CN106163133B - Multifunctional comprehensive circuit debugging system with circuit welding function - Google Patents

Abstract

A multifunctional comprehensive circuit debugging system with circuit welding function, including a control host, a circuit board test fixture, a test signal output observation unit and a circuit board fast welder; the test signal output terminal of the circuit board test fixture and the signal of the test signal output observation unit The input terminal is connected; the power line of the circuit board quick welder is connected with the control host. The invention is simple in structure and easy to operate, integrates the functions of adjustable voltage stabilized power supply, oscilloscope, electronic load meter and other instruments, has various and concentrated functions, is simple and easy to use in the process of use, and has reliable connection, accurate test and debugging circuit The efficiency of the board is greatly improved, and the welding efficiency is high, the safety and reliability are strong, and the welding quality is high and good.

Description

A multifunctional comprehensive circuit debugging system with circuit welding function

technical field

The invention belongs to the technical field of electronic circuits, in particular to a multifunctional integrated circuit debugging system with circuit welding function.

Background technique

The signal changes and functions of electronic circuits have certain abstract characteristics, and it is difficult to know the working status and characteristics of the circuit through direct observation. Therefore, in the application development and design of electronic products and equipment, a large number of instruments and equipment are needed to build a test environment and obtain circuit status.

Circuit debugging refers to the process of verifying whether the expected performance target is achieved at different stages in the circuit development process, finding the reason for the problems that arise, and repeatedly modifying and verifying the process.

There are many kinds of commonly used circuit debugging instruments, including adjustable regulated power supplies, oscilloscopes, electronic load meters, and universal test boards that can repeatedly solder and modify circuits. Due to the variety of these instruments, the functions are not concentrated and not specific. Therefore, a lot of troubles are caused in the use process, which seriously affects the progress and efficiency of circuit debugging.

In addition, at present, when soldering circuit boards, traditional constant-temperature soldering irons are generally used, and electric soldering irons are generally used for hand-held operations. This welding method has the following technical defects: 1. Poor safety, easy to Injury to people or objects; 2. It is cumbersome to operate and the welding efficiency is low; 3. Using an electric soldering iron for welding, because there is no suitable support and adjustment platform, the reliability of welding is poor.

Contents of the invention

In order to solve the deficiencies in the prior art, the present invention provides an easy-to-manipulate, easy-to-adjust, versatile and specific function, good circuit debugging progress, high debugging efficiency, high welding efficiency, strong safety, and good welding effect. A multifunctional comprehensive circuit debugging system with circuit welding function.

In order to solve the above technical problems, the present invention adopts the following technical solutions: a multifunctional integrated circuit debugging system with circuit welding function, including a control host, a circuit board test fixture, a test signal output observation unit and a circuit board fast welder; the circuit board test fixture The test signal output end of the test signal output observation unit is connected to the signal input end;

The control host includes a box in the shape of a rectangular parallelepiped. The box is equipped with a power drive module, a switching power supply control module, a load control module and a welder constant temperature heating module. The rear side of the power drive module is connected to a 220V power supply that extends out of the box. The rear part of the cabinet is provided with a radiator in contact with the power drive module; the load control module is connected to the power drive module, and the load control module is connected to the switching power supply control module and the welder constant temperature heating module respectively;

On the front panel of the cabinet, there are output voltage digital display, output current digital display, load voltage digital display, load current digital display, output voltage adjustment knob, output current adjustment knob, load strength adjustment knob, power supply voltage output Positive pole, negative pole of power supply voltage output, positive pole of load access terminal, negative pole of load access terminal, load strength gear selection button and soldering iron interface, and the interface electrode needle is arranged in the soldering iron interface;

The internal circuit of the switching power supply control module is respectively connected with the positive pole of the power supply voltage output, the negative pole of the power supply voltage output, the output voltage adjustment knob, the output current adjustment knob, the output voltage digital display screen and the output current digital display screen;

The internal circuit of the load control module is respectively connected to the positive pole of the load access terminal, the negative pole of the load access terminal, the load voltage digital display screen, the load current digital display screen and the load intensity gear selection button;

The constant temperature heating module of the welder is connected to the inner end of the interface electrode needle in the soldering iron interface;

The circuit board fast soldering device includes a base, a support guide rod is provided on the rear side of the middle part of the upper surface of the base, a slider is pierced and slid on the support guide rod, and the side of the slider is threaded with a positioning bolt that is press-fitted with the support guide rod , the front side of the slider is provided with a horizontal rod, the front end of the horizontal rod is connected to the connecting rod through the upper ball hinge, the lower end of the connecting rod is connected to the installation platform through the lower ball hinge, the upper surface of the installation platform is vertically provided with a fixed shaft, and the rotation of the fixed shaft is provided with Wire material winding frame, the installation platform is provided with wire material perforation and installation holes, the installation hole is provided with electric soldering iron, and the base is provided with two placement slots for limiting the placement of the lower end of the electric soldering iron; the electric soldering iron includes wearing The handle rod is arranged in the installation hole, the upper end of the handle rod is provided with a limit sleeve located above the installation platform, the outer diameter of the limit sleeve is larger than the inner diameter of the installation hole, and the lower end of the handle rod is coaxially provided with a soldering iron tip through the installation frame;

The upper end of the support guide rod is threaded to connect the limit square nut, the upper wire ring is arranged on the rear side of the limit square nut, the lower wire ring is arranged on the rear side of the base, the power cord passes through the limit sleeve and then passes through the upper wire ring in turn A power connector is connected behind the lower wire ring, and the power connector is plugged into the soldering iron interface and connected to the outer end of the interface electrode pin.

The radiator includes an outer square cylinder and an inner square cylinder whose center line is arranged vertically, the upper and lower ends of the outer square cylinder and the inner square cylinder are blocked, and the rear sides of the outer square cylinder and the inner square cylinder are both sealed. The opening is open, and a diversion channel with a channel steel cross-section is formed between the outer square cylinder and the inner square cylinder. The rear side of the outer square cylinder and the rear side of the inner square cylinder are fixedly connected to the inner wall of the rear panel of the box. Both the inner wall of the outer cylinder and the outer wall of the inner cylinder are provided with airflow guide grooves, and the rear side panel of the box is provided with an air outlet and an air inlet respectively connected with both sides of the air guide channel, and a grille is provided at the air outlet , There is a blower fan located on the rear side of the air inlet and blowing air into the air inlet on the rear side panel of the cabinet.

The circuit board test fixture includes a base set horizontally. The upper surface of the base is provided with a test positioning notch. The base is vertically provided with a back plate and two vertical poles located on the front side of the back plate. The upper end of the pole passes through the positioning plate and the front side of the back plate. Fixed connection, a mobile platform is installed and slid on two vertical poles, a connecting frame is fixed on the upper front side of the back plate, a pressing bar is installed on the upper front side of the connecting frame, a handle cover is provided on the upper part of the pressing bar, and a connecting frame is installed on the lower front side. There is a shaft sleeve, and a push-pull rod is installed and slid inside the shaft sleeve. The lower end of the push-pull rod is vertically fixed on the rear side of the upper surface of the mobile platform. The upper end of the pull rod is hinged with the lower part of the pressure rod;

There are two power terminals and two load terminals on the base, and there are four threading holes corresponding to the bottom of the two power terminals and the two load terminals on the base. The power supply voltage output positive pole and the power supply voltage The output negative pole is respectively connected to a power supply terminal through the first wire passing through the two threading holes, and the positive pole of the load access terminal and the negative pole of the load access end are respectively connected to a load through the second wire passing through the other two threading holes. terminal connection;

The upper surface of the mobile platform is provided with an insulated electrode mounting plate, and the left and right sides of the insulated electrode mounting plate are respectively provided with a set of left lotus-head needle electrodes and right lotus-head needle electrodes, and a left lotus-head needle electrode and a right lotus-head needle electrode. The lower ends of the electrodes protrude from the lower surface of the mobile platform, and the upper ends of the left lotus-head needle electrode and the right lotus-head needle electrode are respectively connected with flexible left electrode lead-out cables and right electrode lead-out cables, and the left electrode lead-out cable and the lower end of the right electrode lead-out cable are connected to the power terminal and the load terminal;

The right side of the base is provided with a signal board electrical connection socket, and the signal board electrical connection socket is respectively connected to the left electrode lead-out cable and the right electrode lead-out cable through signal lead-out lines.

The base has a ventilation hole located under the test positioning notch.

The structure of the left lotus-head needle electrode and the right lotus-head needle electrode is the same. The right lotus-head needle electrode includes a cylindrical electrode body. A cylindrical groove is opened in the axial direction, a movable needle is inserted in the cylindrical groove, a spring is arranged between the upper end of the movable needle and the bottom of the cylindrical groove, and the lower end of the movable needle is a lotus-shaped electric contact surface.

The test signal output observation unit includes a signal board connection cable and a test signal observation board. The left end of the signal board connection cable is provided with a signal board electrical connection plug plugged into the signal board electrical connection socket, and the right end of the signal board connection cable is provided with a Dock-type expansion connection socket, the left end of the test signal observation board is provided with a dock-type expansion connection plug-in, and the dock-type expansion connection plug-in is plugged into the dock-type expansion connection socket.

The dock-type expansion connection plug-in includes a plug-in board, and the left edge of the plug-in board is evenly spaced with several positioning card slots along the front and rear directions. There is a gold-plated contact electrode directly behind each positioning hole;

The dock-type expansion connection socket includes a socket base fixed on the upper surface of the right end of the signal board connection cable. The front and rear ends of the left side of the socket base are respectively provided with a positioning plate, and a cover plate is provided between the two positioning plates. The cover plate The front side and the back side of the front and rear sides are respectively provided with a positioning groove that matches with the positioning plate. The pinch plate is connected to the two positioning plates through the rotation of the hinge shaft. There is a wrench on the right side of the middle part of the pinch plate. The outer contour of the cross-section of the hinge shaft is formed by connecting a circle and a straight line. The lower surface of the buckle plate is provided with elastic ribs for pressing the upper surface of the cover plate. A socket with an open right end is formed between the cover plate and the socket base. The slot is provided with a reed contact electrode corresponding to the gold-plated contact electrode sheet one by one. The right end of the reed contact electrode is raised upwards to form an insertion port between the socket base. The left side of the upper surface of the socket base is provided with a The card slots correspond to the positioning cards for one-to-one positioning. The lower surface of the cover plate is provided with arc-shaped bumps that are snapped and matched with the positioning holes one-to-one. The electrode lead-out needle.

There is a wire guide rod at the bottom of the installation frame. The lower end of the wire feed guide rod is adjacent to the lower end of the soldering iron head. The wound wire material passes through the wire material perforation from top to bottom, bypasses the wheel groove on the wire feeding material roller, passes through the upper wire guide ring and the lower wire guide ring, and then extends to the lower end of the soldering iron tip.

The left side of the base is provided with a cleaning sponge bracket and a flux trough, and the rear part of the right side of the upper surface of the base is provided with two compression springs for pressing and positioning the circuit board through compression spring fixing screws.

By adopting the above technical scheme, the control host is an input and output device integrating three necessary functions. It can output adjustable voltage from 0-30V. The electronic load can simulate a resistive load of 0-10 kohms, and the load strength gear selection button can be adjusted in three gears, namely 0-200, 100-2K, 2K-10K.

The load control module controls the load current and voltage to a given value by the load control module, and then imports it to the power drive module. The power drive module (power tube and load) array generates large power, which naturally generates large heat. Heat is transferred to the outside of the case by a close-fitting radiator. Ensure the stable operation of each part of the circuit. The air supply fan blows air into the diversion channel of the radiator, and the air flow takes the heat dissipated from the outer cylinder out of the air outlet. Both the inner wall of the outer cylinder and the outer wall of the inner cylinder are provided with airflow guide grooves, which not only play a good role in guiding the wind, but also increase the heat dissipation area of the radiator, thereby improving the heat dissipation effect.

The output voltage adjustment knob and the output current adjustment knob are connected to the adjustment circuit of the switching power supply control module to adjust the voltage and current output. The output voltage and current each have three effective figures, and the figures are displayed on the output voltage digital display and output current digital display respectively.

The adjustment of the load intensity is realized by the load intensity gear selection button connected to the input circuit inside the load control module to realize the adjustment of the load intensity. The actual voltage and current strength applied to the internal load circuit are displayed on the load voltage digital display and load current digital display by three digits respectively.

The soldering iron interface is used to connect the heating power connector of the circuit quick solderer.

When testing the circuit board, place the standard board of the test circuit building platform horizontally in the test positioning slot, hold the handle cover and press down the pressure rod, the pressure rod drives the push-pull rod to move down the shaft sleeve through the connecting plate, and the push-pull rod drives the mobile platform Moving down along the two vertical poles, a set of left lotus-head needle electrodes and a set of right lotus-head needle electrodes installed on the mobile platform also move downward, and the left lotus-head needle electrodes and a set of right lotus-head needle electrodes The movable needle at the lower end of the electrode is pressed on the gold-plated electrode sheet on the standard board of the test circuit building platform, so that the relevant signals are connected to the left lotus-head pin electrode and a set of right lotus-head pins on the moving platform on the standard board of the test circuit building platform The type electrodes are introduced into the base through the left electrode lead-out cable and the right electrode lead-out cable respectively, and are connected with the signal board electrical connection socket, the power terminal and the load terminal on the side of the base. The standard board of the test circuit construction platform is a single universal test circuit board, on which the circuit to be debugged can be built, and all input and output signals and observation signals are drawn out through the gold-plated electrode sheets distributed around it.

The springs in the left lotus-head needle electrode and the right lotus-head needle electrode withstand the movable needle, so that the movable needle moves up and down and presses tightly on the gold-plated electrode sheet of the standard board of the test circuit construction platform. The lower end of the movable needle is designed with a lotus-shaped electrical contact surface, which has a larger contact area than the traditional single needle, and this structural connection is more reliable. The ventilation holes provide heat dissipation for the test circuit building platform standard board during the test.

It adopts a hand-pressed multi-rod guide sliding structure, which is easy to operate, safe and reliable. This circuit board test fixture solves the unfavorable situations often encountered in the circuit debugging process, that is, the frequent disassembly of the test circuit construction platform standard board needs to be modified, and the signal is repeatedly connected. And correspondingly, the efficiency is obviously reduced. The standard board of the test circuit building platform is placed horizontally in the test positioning slot, and the standard board of the test circuit building platform can be quickly disassembled. For the frequent use of welding methods during the debugging process to modify the device and circuit connection relationship on the standard board of the test circuit building platform, it is very important. The efficiency is improved, and the unreliability of the test circuit board and the signal connection of the external instrument is reduced, and the signal interference occurring in this case is reduced, which causes adverse effects on the debugging.

The 15 observation signals that are externally connected to the double-reed bayonet electrode of the test signal observation board are drawn out through the dock-type expansion board plug, connected to the dock-type expansion connection socket of the signal board connection cable, and then connected through the signal board electrical connection plug to the signal board electrical connection socket of the circuit board test fixture.

Test circuit construction platform standard board and test signal observation board, these two parts are special circuit boards designed for debugging in the instrument. The standard board of the test circuit building platform is designed to build the test circuit. The power supply and signal are drawn out through the gold-plated electrode sheets arranged in a certain order on the board through contact with the left lotus-head pin electrode and the right lotus-head pin electrode. The function of the test signal observation board is to facilitate the use of external instruments (oscilloscope, voltmeter, etc.) to observe the internal signal status of the test circuit. The instrument probe and measurement needle can be directly connected to a row of double reed bayonet electrodes.

The dock-type expansion connector and the dock-type expansion connection socket are inserted into the slot formed between the cover plate and the socket base through the plug-in board, and the gold-plated contact electrodes on the plug-in board are in contact with the reed contact electrodes, The groove is matched with the positioning card table, and the arc-shaped protrusion is matched with the positioning hole to achieve good positioning contact. In order to make the gold-plated contact electrode piece and the reed contact electrode closely contact, it is also designed to drive the buckle plate to rotate through a wrench, and pass the elastic downward. The convex rib presses the cover plate downwards. Since the pinch plate rotates to drive the hinge shaft to rotate, the outer contour of the cross-section of the hinge shaft is formed by connecting a circle and a straight line segment, which can make the pinch plate rotate slightly downward. When the cover plate is pressed, the straight section of the hinge shaft prevents the hinge shaft from turning over, thereby achieving a good pressing effect. When it is necessary to disengage the dock-type extension connector from the dock-type extension connector, pull the wrench upwards, the pinch plate turns upwards, and the arc-shaped protrusion on the lower surface of the cover plate breaks away from the positioning hole, so that the dock-type extension connector can be pulled out. With this connection structure, not only is the connection tight and reliable, but it can also withstand a certain amount of tension, and avoid interruption of the connection caused by external force or self-weight.

The circuit board rapid soldering device is a part of the multi-functional circuit debugging instrument. Compared with the traditional constant temperature soldering iron, the present invention mainly has the advantages of being more flexible and convenient to use, and can realize rapid soldering. The multi-function circuit debugger is specially used to modify the test circuit frequently and repeatedly, which reduces the circuit debugging time as a whole and speeds up the development speed of the circuit.

The circuit board fast soldering device is connected to the soldering iron interface of the debugger host through the power connector on the power cord to heat and supply power to the soldering device. The upper ball hinge and the lower ball hinge respectively connected by the upper end and the lower end of the connecting rod can not only restrict the movement of the electric soldering iron from the installation platform, but also realize the flexible movement of the electric soldering iron within the upper plane range of the base. After use, insert the tip of the soldering iron into any one of the two placement slots; this structure mainly solves the trouble of frequent placing operations during the soldering process and the problem that it is easy to burn the hands of the operator. There is a wire feeding roller on the installation frame, and the wire is wound in the wheel groove. This structure is responsible for accurately feeding the solder to the lower end of the soldering iron tip. When using the wire feeding roller, the wire (soldering wire) can be moved along Convey the upper guide wire ring and the lower guide wire ring and go down until they touch the side wall of the lower end of the soldering iron tip and melt on the soldering iron tip; this structure saves the need for one hand to take the welding wire to feed the material in the traditional welding process The disadvantage is that the other hand can be freed to do operations such as rotating and positioning the circuit board at the same time, making the operation more time-saving and labor-saving, and more humanized.

When the circuit board fast soldering device is soldering, the slider moves up and down along the support guide rod to a suitable position, and the operating height of the electric soldering iron can be adjusted after tightening the positioning bolts. Then the circuit board can be placed on the base, the circuit board can be pressed tightly by two pressure springs, and the circuit board can be soldered by holding the handle bar.

The invention is simple in structure and easy to operate, and integrates the functions of adjustable voltage stabilized power supply, oscilloscope, electronic load meter and other instruments. The efficiency of the board is greatly improved, and the welding efficiency is high, the safety and reliability are strong, the welding quality is high and good, and it is easy to replace wearing parts such as ceramic heating cores.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the structure of the front panel of the control host in Fig. 1;

Fig. 3 is the top view of Fig. 2;

Fig. 4 is B-B sectional view among Fig. 3;

Fig. 5 is an enlarged view of the circuit board test fixture in Fig. 1;

Fig. 6 is a bottom view of the circuit board test fixture;

Fig. 7 is an axial sectional view of the right lotus head needle electrode in Fig. 5;

Fig. 8 is a top view of the test signal output observation unit;

Fig. 9 is an enlarged view of the plugging structure of the dock-type expansion connection plug-in unit and the dock-type expansion connection socket;

Fig. 10 is an enlarged view of place A in Fig. 1;

Fig. 11 is an enlarged view of the circuit board fast soldering device in Fig. 1 .

Detailed ways

As shown in Figures 1-11, the multifunctional integrated circuit debugging system with circuit welding function of the present invention includes a control host 50, a circuit board test fixture 51, a test signal output observation unit 52 and a circuit board fast welder 129; The test signal output terminal of the board test fixture 51 is connected to the signal input terminal of the test signal output observation unit 52 .

The control host 50 includes a box body 53 in the shape of a cuboid. The box body 53 is provided with a power drive module 54, a switching power supply control module 55, a load control module 56 and a welder constant temperature heating module 57. The rear side of the power drive module 54 is connected to a Stretch out the 220V power line 58 of box body 53 behind, the inner rear part of box body 53 is provided with the radiator 63 that contacts with power drive module 54; Load control module 56 is connected with power drive module 54, and load control module 56 is connected with switch respectively. The power supply control module 55 is connected with the welder constant temperature heating module 57.

The front panel of the cabinet 53 is provided with an output voltage digital display 59, an output current digital display 60, a load voltage digital display 61, a load current digital display 62, an output voltage adjustment knob 64, an output current adjustment knob 65, a load Intensity adjustment knob 66, power supply voltage output positive pole 67, power supply voltage output negative pole 68, load access terminal positive pole 69, load access terminal negative pole 70, load strength gear selection button 71 and soldering iron interface 72, soldering iron interface 72 is equipped with There are interface electrode pins.

The internal circuit of the switching power supply control module 55 is respectively connected with the power supply voltage output positive pole 67, the power supply voltage output negative pole 68, the output voltage adjustment knob 64, the output current adjustment knob 65, the output voltage digital display 59 and the output current digital display 60.

The internal circuit of the load control module 56 is respectively connected to the positive pole 69 of the load access terminal, the negative pole 70 of the load access terminal, the digital display screen 61 of the load voltage, the digital display screen 62 of the load current and the selection button 71 of the load intensity gear.

The welder constant temperature heating module 57 is connected to the inner end of the interface electrode needle in the soldering iron interface 72 .

The circuit board quick welder 129 comprises a base 1, the rear side of the middle part of the upper surface of the base 1 is provided with a support guide rod 2, the support guide rod 2 is pierced and slidably provided with a slider 3, and the side of the slider 3 is threadedly connected with the support guide. The positioning bolt 4 that is pressed against the rod 2, the front side of the slider 3 is provided with a horizontal rod 5, the front end of the horizontal rod 5 is connected to the connecting rod 7 through the upper ball hinge 6, and the lower end of the connecting rod 7 is connected to the installation platform 9 through the lower ball hinge 8 The upper surface of the installation platform 9 is vertically provided with a fixed shaft 10, the fixed shaft 10 is rotated and provided with a wire winding frame 11, the installation platform 9 is provided with a wire perforation 12 and an installation hole 13, and the installation hole 13 is pierced with an electric wire. The base 1 of the soldering iron 14 is provided with two placement slots 15 for limiting the placement of the lower end of the soldering iron 14 .

The electric soldering iron includes a handle bar 16 that is installed in the installation hole 13. The upper end of the handle bar 16 is provided with a spacer 17 positioned above the installation platform 9. The outer diameter of the spacer 17 is greater than the inner diameter of the installation hole 13. The lower end of the handle bar 16 A soldering iron tip 25 is coaxially connected with the installation frame 19 .

The upper end of the support guide rod 2 is provided with a threaded connection limiting square nut 39, and the rear side of the limiting square nut 39 is provided with an upper wire ring 40, and the rear side of the base 1 is provided with a lower wire ring 41, and the power cord 34 is passed through by a limiting sleeve 17. After passing through the upper wire ring 40 and the lower wire ring 41 in sequence, a power connector 42 is connected. The power connector 42 is plugged into the soldering iron interface 72 and connected to the outer end of the interface electrode pin.

The bottom of the mounting frame 19 is provided with a wire feed guide rod 36, the lower end of the wire feed guide rod 36 is adjacent to the lower end of the soldering iron head 25, the upper part of the wire feed guide rod 36 is provided with an upper guide wire ring 37, and the lower end of the wire feed guide rod 36 is provided with a lower guide wire ring 38. The wire material 21 wound on the wire material winding frame 11 passes through the wire material perforation 12 sequentially from top to bottom, bypasses the wheel groove on the wire feeding material roller 20, and passes through the upper wire guide ring 37 and the lower wire guide ring 38 Stretch into the soldering iron head 25 lower ends afterward.

The left side of the base 1 is provided with a cleaning sponge placement rack 44 and a flux trough 43. The cleaning sponge placement rack 44 is used to place a sponge for cleaning the surface of the circuit board 48, and the flux trough 43 is used to hold flux. The upper surface of the base 1 The right rear part is provided with two compression springs 46 for pressing and positioning the circuit board 48 through compression spring fixing screws 45 .

The radiator 63 comprises an outer cylinder 73 and an inner cylinder 74 whose center line is arranged vertically, the upper and lower ends of the outer cylinder 73 and the inner cylinder 74 are blocked, and the outer cylinder 73 and the inner The rear side of cylinder body 74 is all open, and the cross-section is channel steel-type diversion passage formed between outer square cylinder body 73 and inner square cylinder body 74, and the rear side of outer square cylinder body 73 and the rear side of inner square cylinder body 74 are all open. Fixedly connected on the inner wall of the rear side panel of the box body 53, the inner wall of the outer cylinder body 73 and the outer wall of the inner square cylinder body 74 are provided with airflow guide grooves 75, and the rear side panel of the box body 53 is provided with two sides of the air guide channel. The air outlet and the air inlet connected respectively, the air outlet is provided with a grille 76, and the rear side panel of the casing 53 is provided with a blower fan 77 positioned at the rear side of the air inlet and blowing air in the air inlet.

The circuit board test fixture 51 comprises a base 78 arranged horizontally, the upper surface of the base 78 is provided with a test positioning notch, and the base 78 is vertically provided with a backboard 79 and two uprights 80 positioned at the front side of the backboard 79, the uprights The upper end of the 80 is fixedly connected with the front side of the backboard 79 through the positioning plate 126. The two vertical rods 80 are pierced and slidably provided with a mobile platform 81. The upper part of the front side of the backboard 79 is fixedly provided with a connecting frame 82. There is a pressure rod 83, the upper part of the pressure rod 83 is provided with a handle cover 84, the lower part of the front side of the connecting frame 82 is provided with a shaft sleeve 85, and a push-pull rod 86 is installed and slid inside the shaft sleeve 85, and the lower end of the push-pull rod 86 is vertically fixed on the mobile platform 81 upper surface rear side, push-pull rod 86 upper end and depression bar 83 bottoms are connected by connecting plate 87, and connecting plate 87 two ends are respectively hinged with push-pull rod 86 upper ends and depression rod 83 bottoms.

The base 78 is provided with two power terminals 88 and two load terminals 89, and the base 78 is provided with four threading holes 90 corresponding to the bottom of the two power terminals 88 and the two load terminals 89. The positive pole 67 of the power supply voltage output and the negative pole 68 of the power supply voltage output are respectively connected to a power terminal 88 through the first wire passing through the two threading holes 90, and the positive pole 69 of the load access terminal and the negative pole 70 of the load access terminal are respectively passed through The second wires of the other two threading holes 90 are correspondingly connected to a load terminal 89 .

The upper surface of the mobile platform 81 is provided with an insulating electrode mounting plate 91, and the left side and the right side of the insulating electrode mounting plate 91 are respectively provided with a group of left lotus-shaped needle electrodes 92 and right lotus-shaped needle electrodes 93, and the left lotus-shaped needle electrodes 92 and the lower ends of the right lotus-shaped needle electrode 93 protrude from the lower surface of the mobile platform 81, and the upper ends of the left lotus-shaped needle electrode 92 and the right lotus-shaped needle electrode 93 are connected with flexible left electrode lead-out cables 94 and 93 respectively. The lower ends of the right electrode lead-out cable 95 , the left electrode lead-out cable 94 and the right electrode lead-out cable 95 are all connected to the power terminal 88 and the load terminal 89 .

The right side of the base 78 is provided with a signal board electrical connection socket 96, and the signal board electrical connection socket 96 is respectively connected to the left electrode lead-out cable 94 and the right electrode lead-out cable 95 through signal lead-out wires.

The base 78 is provided with a ventilation hole 97 located below the test positioning notch.

The structure of the left lotus head needle electrode 92 and the right lotus head needle electrode 93 is the same, and the right lotus head needle electrode 93 includes a cylindrical electrode body 98, and the upper end of the electrode body 98 is provided with a lead that is connected with the right electrode lead-out cable 95. The electrode 99, the lower end of the electrode body 98 is provided with a cylindrical groove along the axial direction, a movable needle 100 is inserted in the cylindrical groove, a spring 101 is arranged between the upper end of the movable needle 100 and the bottom of the cylindrical groove, and the lower end of the movable needle 100 is a lotus head-shaped electrical contact. Surface 102.

The test signal output observation unit 52 includes a signal board connection cable 103 and a test signal observation board 104. The left end of the signal board connection cable 103 is provided with a signal board electrical connection plug 105 inserted in the signal board electrical connection socket 96. The right end of the connection cable 103 is provided with a dock-type expansion connection socket 106, and the left end of the test signal observation board 104 is provided with a dock-type expansion connection plug-in 107, and the dock-type expansion connection plug-in 107 is plugged into the dock-type expansion connection socket 106, and the test signal observation board A row of double reed bayonet electrodes 108 is arranged on the upper surface of 104 .

The docking extension connector 107 includes a plug-in board 109, the left edge of the plug-in board 109 is evenly spaced along the front and rear directions with several positioning slots 110, and the plug-in board 109 is respectively provided with a front and back side of each positioning slot 110. As for the positioning holes 111 , a gold-plated contact electrode piece 112 is provided directly behind each positioning hole 111 on the plug board 109 .

The docking expansion connection socket 106 includes a socket base 113 fixed on the upper surface of the right end of the signal board connection cable 103, a positioning plate 114 is respectively provided at the front end and the rear end of the left side of the socket base 113, and a positioning plate 114 is arranged between the two positioning plates 114. Cover plate 115 is arranged, and the front side and the rear side of cover plate 115 are respectively provided with a positioning groove that cooperates with locating plate 114, is connected with pinch plate 116 by hinge shaft 118 rotation between two locating plates 114, pinch plate 116 middle part right There is a wrench 117 on the side, and the hinge shaft 118 is fixedly connected with the pinch plate 116. The outer contour of the cross section of the hinge shaft 118 is formed by connecting a circle and a straight line. Elastic ribs 119, between the cover plate 115 and the socket base 113 form a slot 120 with an open right end, and the slot 120 is provided with a reed contact electrode 121 corresponding to the gold-plated contact electrode sheet 112 one by one. The right end of the contact electrode 121 is tilted upwards to form an insertion port 122 between the socket base 113, and the left side of the upper surface of the socket base 113 is provided with a positioning card platform 123 correspondingly positioned with the positioning card groove 110, and the lower surface of the cover plate 115 is provided with There are arc-shaped protrusions 124 snapping and matching with the positioning holes 111 one by one, and the electrode lead-out pins 125 correspondingly linked with each reed contact electrode 121 are provided on the signal board connecting cable 103 .

The control host 50 is an input and output device integrating three necessary functions. It can output adjustable voltage from 0-30V. The electronic load can simulate a resistive load of 0-10 kohm, and the load intensity selection button 71 can be adjusted in three levels, namely 0-200, 100-2K, 2K-10K.

The load control module 56 controls the load current and voltage to a given size by the load control module 56, and then imports them to the power drive module 54. The array of power drive modules 54 (power tubes and loads) generates relatively large power, which naturally produces relatively large power. Large heat is transferred to the outside of the casing 53 by the heat sink 63 that is close to it. Ensure the stable operation of each part of the circuit. The blower fan 77 blows air into the guide channel of the radiator 63, and the air flow takes the heat emitted by the outer cylinder 73 out from the air outlet. Both the inner wall of the outer square cylinder 73 and the outer wall of the inner square cylinder 74 are provided with airflow guide grooves 75, which not only play a good role in guiding the wind, but also increase the heat dissipation area of the radiator 63, thereby improving the heat dissipation effect.

The output voltage adjustment knob 64 and the output current adjustment knob 65 are connected to the adjustment circuit of the switching power supply control module 55 to adjust the output voltage and current. The output voltage and current each have three significant figures, and the numbers are displayed on the output voltage digital display screen 59 and the output current digital display screen 60 respectively.

The adjustment of the load intensity is realized by the load intensity gear selection button 71 connected to the internal input circuit of the load control module 56 to realize the adjustment of the load intensity. The actual voltage and current intensity applied to the internal load circuit are displayed on the load voltage digital display 61 and the load current digital display 62 by three digits respectively.

The soldering iron interface 72 is used to connect the heating power connector of the circuit quick welder.

When performing a circuit board test, place the test circuit building platform standard board 127 horizontally in the test positioning slot, hold the handle cover 84 and press down on the pressure rod 83, and the pressure rod 83 drives the push-pull rod 86 downward along the shaft sleeve 85 through the connecting plate 87 Move, the push-pull rod 86 drives the mobile platform 81 to move down along the two vertical rods 80, and a group of left lotus-shaped needle electrodes 92 and a group of right lotus-shaped needle electrodes 93 installed on the mobile platform 81 also move downward. The movable needle 100 at the lower end of the left lotus-shaped needle electrode 92 and a group of right lotus-shaped needle electrodes 93 is pressed on the gold-plated electrode sheet on the test circuit construction platform standard board 127, so that relevant signals are connected to the test circuit construction platform standard board 127 The left lotus head needle electrode 92 and one group of right lotus head needle electrodes 93 on the upper mobile platform 81 are respectively introduced into the base 78 through the left electrode lead-out cable 94 and the right electrode lead-out cable 95, and are connected to the side of the base 78. The electrical connection socket 96 of the signal board, the power terminal 88 and the load terminal 89 are connected. The test circuit construction platform standard board 127 is a single universal test circuit board on which a circuit to be debugged can be built, and all input and output signals and observation signals are drawn out through the gold-plated electrode sheets 128 distributed around the periphery.

The spring 101 in the left lotus-shaped needle electrode 92 and the right lotus-shaped needle electrode 93 withstands the movable needle 100, so that the movable needle 100 moves up and down and is tightly pressed on the gold-plated electrode sheet 128 of the test circuit construction platform standard board 127. The lower end of the movable needle 100 is designed with a lotus head-shaped electrical contact surface 102 , which has a larger contact area than the traditional single needle, and this structural connection is more reliable. The ventilation hole 97 is for the test circuit building platform standard board 127 in the test process to dissipate heat.

It adopts a hand-pressed multi-rod guide sliding structure, which is easy to operate, safe and reliable. The circuit board test fixture 51 solves the unfavorable situation often encountered in the circuit debugging process, that is, the frequent disassembly of the test circuit construction platform standard board 127 when it needs to be modified. Repeated connections and correspondences significantly reduce efficiency. The test circuit construction platform standard board 127 is horizontally placed in the test positioning slot, and the test circuit construction platform standard board 127 can be quickly disassembled. For the frequently used welding method in the debugging process to modify the device and circuit connection relationship on the test circuit construction platform standard board 127, The efficiency is greatly improved, and the unreliability of the signal connection between the test circuit board and the external instrument is reduced, and the signal interference in this case is reduced, resulting in adverse effects on debugging.

The 15 observation signals that are externally connected to the double-reed bayonet electrode 108 of the test signal observation board 104 are drawn out through the docking expansion board plug, connected to the docking expansion connection socket 106 of the signal board connection cable 103, and then passed through the signal board The electrical connection plug 105 is connected to the signal board electrical connection socket 96 of the circuit board test fixture 51 .

The test circuit construction platform standard board 127 and the test signal observation board 104 are special circuit boards designed for debugging in the instrument. The test circuit building platform standard board 127 is designed for building a test circuit. Power and signals are drawn out through the gold-plated electrode sheets 128 arranged in a certain order on the board by touching the left lotus head needle electrode 92 and the right lotus head needle electrode 93. The function of the test signal observation board 104 is to facilitate the use of external instruments (oscilloscopes, voltmeters, etc.) to observe the internal signal status of the test circuit. The instrument probes and measurement needles can be directly connected to a row of double reed bayonet electrodes 108 conveniently .

The dock-type expansion connection plug-in 107 and the dock-type expansion connection socket 106 are inserted into the slot 120 formed between the cover plate 115 and the socket base 113 through the plug-in board 109, and the gold-plated contact electrode piece 112 and the reed on the plug-in board 109 The contact electrode 121 is in contact, and the positioning card slot 110 is matched with the positioning card table 123, and the arc-shaped protrusion 124 is matched with the positioning hole 111 to achieve good positioning contact. In addition, it is designed to drive the pinch plate 116 to rotate through the wrench 117, and press the cover plate 115 downward through the elastic rib 119. Since the pinch plate 116 rotates, the hinge shaft 118 is driven to rotate, and the outer profile of the cross section of the hinge shaft 118 is given by The circle and the straight section are connected, so that when the pinch plate 116 rotates horizontally and slightly deflects the lower cover plate 115, the straight section of the hinge shaft 118 plays a role in preventing the hinge shaft 118 from turning over, thereby playing a good role. Push down effect. When it is necessary to disengage the dock-type expansion connection plug-in 107 from the dock-type expansion connection socket 106, pull the wrench 117 upwards, the buckle plate 116 is turned upwards, and the arc-shaped protrusion 124 on the lower surface of the cover plate 115 is separated from the positioning hole 111, so that the The docking expansion connection plug-in 107 is drawn out. With this connection structure, not only is the connection tight and reliable, but it can also withstand a certain amount of tension, and avoid interruption of the connection caused by external force or self-weight.

The circuit board fast soldering device 129 is a part of the multi-functional circuit debugging instrument. Compared with the traditional constant temperature soldering iron, the present invention mainly has the advantages of being more flexible and convenient to use and capable of fast soldering. The multi-function circuit debugger is specially used to modify the test circuit frequently and repeatedly, which reduces the circuit debugging time as a whole and speeds up the development speed of the circuit.

The circuit board quick welder 129 is connected to the soldering iron interface of the debugger host through the power connector 42 on the power cord 34 to realize heating and power supply to the welder. The upper ball hinge 6 and the lower ball hinge 8 respectively connected by the upper end and the lower end of the connecting rod 7 can not only limit the movement of the electric soldering iron 14 from the installation platform 9, but also realize the flexible movement of the electric soldering iron 14 within the upper plane range of the base 1 . Insert the soldering iron tip 25 into any one of the two placement slots 15 after use; this structure mainly solves the trouble of frequent placement operations during the welding process and the problem of easily scalding the hands of the operator. A wire feeding material roller 20 is set on the installation frame 19, and the wire material 21 is wound in the wheel groove. Welding wire) can go down along conveying the upper guide wire ring 37 and the lower guide wire ring 38 until it touches the side wall of the lower end of the soldering iron tip 25 and melts on the soldering iron tip 25; this structure saves the traditional soldering process The disadvantage of needing to take up one hand to feed the welding wire, the other hand can be saved to perform operations such as rotating and positioning the circuit board 48 at the same time, making the operation more time-saving and labor-saving, and more humanized.

This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the present invention. All simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention belong to the protection of the technical solution of the present invention. scope.

Claims (9)

1. A multifunctional integrated circuit debugging system with circuit welding function, characterized in that: it includes a control host, a circuit board test fixture, a test signal output observation unit and a circuit board fast welder; the test signal output terminal of the circuit board test fixture is connected to the test The signal output is connected to the signal input terminal of the observation unit; The control host includes a box in the shape of a rectangular parallelepiped. The box is equipped with a power drive module, a switching power supply control module, a load control module and a welder constant temperature heating module. The rear side of the power drive module is connected to a 220V power supply that extends out of the box. The rear part of the cabinet is provided with a radiator in contact with the power drive module; the load control module is connected to the power drive module, and the load control module is connected to the switching power supply control module and the welder constant temperature heating module respectively; On the front panel of the cabinet, there are output voltage digital display, output current digital display, load voltage digital display, load current digital display, output voltage adjustment knob, output current adjustment knob, load strength adjustment knob, power supply voltage output Positive pole, negative pole of power supply voltage output, positive pole of load access terminal, negative pole of load access terminal, load strength gear selection button and soldering iron interface, and the interface electrode needle is arranged in the soldering iron interface; The internal circuit of the switching power supply control module is respectively connected with the positive pole of the power supply voltage output, the negative pole of the power supply voltage output, the output voltage adjustment knob, the output current adjustment knob, the output voltage digital display screen and the output current digital display screen; The internal circuit of the load control module is respectively connected to the positive pole of the load access terminal, the negative pole of the load access terminal, the load voltage digital display screen, the load current digital display screen and the load intensity gear selection button; The constant temperature heating module of the welder is connected to the inner end of the interface electrode needle in the soldering iron interface; The circuit board fast soldering device includes a base, a support guide rod is provided on the rear side of the middle part of the upper surface of the base, a slider is pierced and slid on the support guide rod, and the side of the slider is threaded with a positioning bolt that is press-fitted with the support guide rod , the front side of the slider is provided with a horizontal rod, the front end of the horizontal rod is connected to the connecting rod through the upper ball hinge, the lower end of the connecting rod is connected to the installation platform through the lower ball hinge, the upper surface of the installation platform is vertically provided with a fixed shaft, and the rotation of the fixed shaft is provided with Wire material winding frame, the installation platform is provided with wire material perforation and installation holes, the installation hole is provided with electric soldering iron, and the base is provided with two placement slots for limiting the placement of the lower end of the electric soldering iron; the electric soldering iron includes wearing The handle rod is arranged in the installation hole, the upper end of the handle rod is provided with a limit sleeve located above the installation platform, the outer diameter of the limit sleeve is larger than the inner diameter of the installation hole, and the lower end of the handle rod is coaxially provided with a soldering iron tip through the installation frame; The upper end of the support guide rod is threaded to connect the limit square nut, the upper wire ring is arranged on the rear side of the limit square nut, the lower wire ring is arranged on the rear side of the base, the power cord passes through the limit sleeve and then passes through the upper wire ring in turn A power connector is connected behind the lower wire ring, and the power connector is plugged into the soldering iron interface and connected to the outer end of the interface electrode pin. 2. The multifunctional integrated circuit debugging system with circuit welding function according to claim 1, characterized in that: the radiator includes an outer square cylinder and an inner square cylinder whose center line is arranged vertically, the outer square cylinder and the inner square cylinder. The upper and lower ends of the inner square cylinder are blocked, the rear sides of the outer square cylinder and the inner square cylinder are open, and a channel-shaped channel is formed between the outer square cylinder and the inner square cylinder. Both the rear side of the outer cylinder and the rear side of the inner cylinder are fixedly connected to the inner wall of the rear side panel of the box body, and the inner wall of the outer square cylinder and the outer wall of the inner square cylinder are provided with airflow guide grooves, and the rear side panel of the box body An air outlet and an air inlet respectively communicated with both sides of the diversion channel are provided, a grille is arranged at the air outlet, and an air supply fan located on the rear side of the air inlet and blowing into the air inlet is provided on the rear side panel of the cabinet. 3. The multifunctional integrated circuit debugging system with circuit welding function according to claim 2, characterized in that: the circuit board test fixture comprises a base arranged horizontally, the upper surface of the base is provided with a test positioning notch, and A backplane and two vertical poles located on the front side of the backplane are installed vertically. The upper end of the pole is fixedly connected to the front side of the backplane through a positioning plate. A mobile platform is installed and slides on the two poles, and a connecting frame is fixed on the upper front side of the backplane. , the upper part of the front side of the connecting frame is provided with a pressure rod, the upper part of the pressure rod is provided with a handle cover, the lower part of the front side of the connecting frame is provided with a bushing, and a push-pull rod is inserted and slid inside the bushing, and the lower end of the push-pull rod is vertically fixed on the mobile platform On the rear side of the surface, the upper end of the push-pull rod and the lower part of the pressure rod are connected through a connecting plate, and the two ends of the connecting plate are respectively hinged with the upper end of the push-pull rod and the lower part of the pressure rod; There are two power terminals and two load terminals on the base, and there are four threading holes corresponding to the bottom of the two power terminals and the two load terminals on the base. The power supply voltage output positive pole and the power supply voltage The output negative pole is respectively connected to a power supply terminal through the first wire passing through the two threading holes, and the positive pole of the load access terminal and the negative pole of the load access end are respectively connected to a load through the second wire passing through the other two threading holes. terminal connection; The upper surface of the mobile platform is provided with an insulated electrode mounting plate, and the left and right sides of the insulated electrode mounting plate are respectively provided with a set of left lotus-head needle electrodes and right lotus-head needle electrodes, and a left lotus-head needle electrode and a right lotus-head needle electrode. The lower ends of the electrodes protrude from the lower surface of the mobile platform, and the upper ends of the left lotus-head needle electrode and the right lotus-head needle electrode are respectively connected with flexible left electrode lead-out cables and right electrode lead-out cables, and the left electrode lead-out cable and the lower end of the right electrode lead-out cable are connected to the power terminal and the load terminal; The right side of the base is provided with a signal board electrical connection socket, and the signal board electrical connection socket is respectively connected to the left electrode lead-out cable and the right electrode lead-out cable through signal lead-out lines. 4. The multifunctional integrated circuit debugging system with circuit welding function according to claim 3, characterized in that: the base is provided with a ventilation hole located below the test positioning notch. 5. The multifunctional integrated circuit debugging system with circuit welding function according to claim 3 or 4, characterized in that: the left lotus-head needle electrode and the right lotus-head needle-type electrode have the same structure, and the right lotus-head needle-type electrode Including a cylindrical electrode body, the upper end of the electrode body is provided with a lead-out electrode connected to the right electrode lead-out cable, the lower end of the electrode body is provided with a cylindrical groove along the axial direction, and a movable needle is inserted in the cylindrical groove, and the upper end of the movable needle is connected to the bottom of the cylindrical groove. A spring is arranged between them, and the lower end of the movable needle is a lotus-shaped electric contact surface. 6. The multifunctional integrated circuit debugging system with circuit welding function according to claim 3, characterized in that: the test signal output observation unit includes a signal board connection cable and a test signal observation board, and the left end of the signal board connection cable is provided with There is a signal board electrical connection plug plugged into the signal board electrical connection socket. The right end of the signal board connection cable is provided with a dock-type expansion connection socket. The left end of the test signal observation board is provided with a dock-type expansion connection plug-in. Connected to the docking expansion connection socket, a row of double reed bayonet electrodes are arranged on the upper surface of the test signal observation board. 7. The multi-functional integrated circuit debugging system with circuit welding function according to claim 6, characterized in that: the dock-type expansion connection plug-in includes a plug-in board, and the left end edge of the plug-in board is evenly spaced with several positioning card slots along the front and rear directions , the plugboard is provided with a positioning hole on the front and rear sides of each positioning card slot, and a gold-plated contact electrode is provided on the plugboard directly behind each positioning hole; The dock-type expansion connection socket includes a socket base fixed on the upper surface of the right end of the signal board connection cable. The front and rear ends of the left side of the socket base are respectively provided with a positioning plate, and a cover plate is provided between the two positioning plates. The cover plate The front side and the back side of the front and rear sides are respectively provided with a positioning groove that matches with the positioning plate. The pinch plate is connected to the two positioning plates through the rotation of the hinge shaft. There is a wrench on the right side of the middle part of the pinch plate. The outer contour of the cross-section of the hinge shaft is formed by connecting a circle and a straight line. The lower surface of the buckle plate is provided with elastic ribs for pressing the upper surface of the cover plate. A socket with an open right end is formed between the cover plate and the socket base. The slot is provided with a reed contact electrode corresponding to the gold-plated contact electrode sheet one by one. The right end of the reed contact electrode is raised upwards to form an insertion port between the socket base. The left side of the upper surface of the socket base is provided with a The card slots correspond to the positioning cards for one-to-one positioning. The lower surface of the cover plate is provided with arc-shaped bumps that are snapped and matched with the positioning holes one-to-one. The electrode lead-out needle. 8. The multifunctional integrated circuit debugging system with circuit welding function according to claim 1, characterized in that: the bottom of the mounting frame is provided with a wire feeding guide rod, the lower end of the wire feeding guide rod is adjacent to the lower end of the soldering iron tip, and the upper part of the wire feeding guide rod There is an upper wire guide ring, and a lower wire guide ring is provided at the lower end of the wire feeding guide rod. The wire wound on the wire winding frame passes through the wire holes from top to bottom in turn, bypasses the wheel groove on the wire feeding roller, After passing through the upper wire guide ring and the lower guide wire ring, it extends to the lower end of the soldering iron tip. 9. The multifunctional integrated circuit debugging system with circuit welding function according to claim 8, characterized in that: the left side of the base is provided with a cleaning sponge bracket and a flux trough, and the rear part of the right side of the upper surface of the base passes through a compression spring The fixing screw is provided with two pressure springs for pressing and positioning the circuit board.