CN205959495U - Modularized laboratory box of micro -controller - Google Patents

Abstract

The utility model is suitable for the field of electronic circuit technology teaching equipment, and provides a modular single-chip microcomputer experiment box, including a box body, in which are installed: a functional module, a power supply module and several connecting wires; the box body includes an upper cover and a A bottom case for storing the functional modules and connecting wires, an upper cover is installed on the bottom case, and an operation panel for detachable assembly of the functional modules is installed in the upper cover. By setting the bottom case, the functional modules and connecting wires are stored in the bottom case, and by setting the operation panel, to carry out the experimental teaching of single-chip microcomputer and demonstrate the required functions, you only need to take the selected function module out of the bottom case, and then Assembled on the operation board, and then connected with the connecting wire, the connection is simple and convenient, and the selected functional modules will not be interfered by other unselected functional modules; in addition, when new functions need to be demonstrated, only new functions need to be added Modules are enough, which is convenient for expansion and maintenance of each functional module.

Description

Modular microcontroller experiment box

technical field

The utility model belongs to the field of electronic circuit technology teaching equipment, in particular to a modular single-chip microcomputer experiment box.

Background technique

The principle and application of single-chip microcomputer is the basic course of engineering majors such as computer, electronics, communication and automation. The experimental teaching generally adopts two methods of software simulation (virtual experiment) and physical operation.

There are three main forms of single-chip experimental teaching equipment: experimental bench (frame, cabinet), experimental (development) board and experimental box. The experimental bench (stand, cabinet) is mainly to simulate the actual application environment, suitable for the practical training and teaching of operation skills. The experiment (development) board is mainly used for the principle demonstration, verification and program debugging of the single-chip microcomputer, which is economical and convenient, but the experiment content is simple, and it is separated from the actual working process of the single-chip microcomputer application system development. Experimental boxes generally integrate multi-functional modules in the box to achieve different experimental teaching functions.

Existing single-chip microcomputer experiment boxes are generally integrated with various functional modules to meet the needs of teaching more comprehensively. Existing single-chip microcomputer experiment boxes are usually solidified with multiple function expansion modules isolated from each other on a layer of PCB board or a double-layer PCB board, and solder or insert a single-chip microcomputer on the PCB board, and connect each function expansion module to the single-chip microcomputer respectively. The wires are electrically connected, and the connection is complicated. When teaching, use the corresponding functional modules directly. However, when a certain functional module is selected for this single-chip experiment box, other unselected functional modules will interfere with the experimental operation.

Utility model content

The purpose of the utility model is to provide a modular single-chip experiment box, aiming at solving the problem that the connection of the single-chip experiment box is cumbersome and each functional module will interfere with each other.

The utility model is achieved in this way, a modular single-chip experiment box, including a box body, installed in the box: a function module for carrying out a single-chip experiment, a power supply module for powering the function module and several Connecting wires for electrical connection; the box includes an upper cover and a bottom case for storing the functional modules and the connecting wires, the upper cover is installed on the bottom case, and the upper cover An operation panel for detachable assembly of the functional modules is installed.

Further, the operation panel includes a support plate for supporting the functional module, and a plurality of sockets for inserting and fixing the functional module are opened on the support plate.

Further, the operation panel further includes a reinforcing plate for cooperating with the supporting plate to fix the functional module, and the reinforcing plate is located on a side of the supporting plate close to the top surface of the upper cover.

Further, the functional module includes a core board and a function expansion module for electrically connecting with the core board to realize the function experiment of the single-chip microcomputer.

Further, the function expansion module is one or more of a memory interface module, a function expansion interface module, an interface chip module, a data conversion module, a communication interface module, an input/output module, an extended input/output module and a control object module.

Further, the core board includes a single-chip microcomputer with 40 pins, the P0 group pins of the single-chip microcomputer are drawn by two ten-pin double-row sockets, and the P1 group pins of the single-chip microcomputer are drawn by two ten-pin double-row sockets The P2 group pins of the single-chip microcomputer are drawn out by two ten-pin double-row sockets, the P3 group pins of the single-chip microcomputer are drawn out by two ten-pin double-row sockets, and the ISP interface of the single-chip microcomputer is drawn by a ten-pin socket Draw, the matrix keyboard interface of described single-chip microcomputer is drawn by a ten-pin double-row socket.

Further, the signal pins of the function expansion module are drawn out from a ten-pin double-row socket, and the control pins of the function expansion module are drawn out from a ten-pin double-row socket.

Further, a partition block is fitted in the bottom case, and several storage chambers for storage are opened in the partition block.

Further, the storage chamber includes a first storage chamber for storing the functional modules of one size and a wire storage chamber for storing the connecting wires.

Further, the storage chamber further includes a second storage chamber for storing the functional module of another size.

The utility model stores the functional modules and connecting wires in the bottom case by setting the bottom case, and by setting the operation panel, when it is necessary to carry out the experimental teaching of the single-chip microcomputer and demonstrate the required functions, only the selected functional modules need to be removed from the bottom case Take it out, then assemble it on the operation board, and then use the connecting wire to connect. The connection is simple and convenient, and the selected functional modules will not be interfered by other unselected functional modules; in addition, when it is necessary to demonstrate new functions, only need Just add new functional modules, which is convenient for expansion and maintenance of each functional module.

Description of drawings

Fig. 1 is the schematic diagram of the three-dimensional structure of a kind of modular single-chip computer experiment box that the utility model embodiment provides;

Fig. 2 is the top view structure diagram of the function expansion module in the modular single-chip microcomputer experiment box of Fig. 1;

Fig. 3 is the structural representation that the function expansion module is installed on the operating panel in the modular single-chip microcomputer experiment box of Fig. 1;

Fig. 4 is a schematic diagram of the circuit structure of the core board in the modular single-chip microcomputer experiment box of Fig. 1 .

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Please refer to Fig. 1-Fig. 4, a kind of modular single-chip microcomputer experimental box 100 that the utility model embodiment provides, comprises box body 10, function module, power supply module and several connecting wires; Box body 10 is used for accommodating and installing each function Module, power module and several connecting wires, in order to protect these functional modules and connecting devices, but also easy to carry. The function module is used for single-chip microcomputer experiment, so as to carry out various single-chip microcomputer function experiment teaching and demonstration. The power module is used to supply power to the functional modules. The connecting wire is used for electrical connection. The box body 10 includes a bottom case 12 and an upper cover 11, and the upper cover 11 is installed on the bottom case 12; the bottom case 12 is mainly used for storing functional modules and connecting wires, and an operation panel 20 is installed in the upper cover 11, and the operation panel 20 is used for To assemble the functional modules, so that when the corresponding functions of the single-chip microcomputer experiment teaching are needed, the selected functional modules can be directly taken out from the bottom case 12 and assembled on the operation panel 20, and then the functional modules are electrically connected and assembled using the connecting wires, so as to complete Corresponding experimental teaching; after the teaching, the connecting wire can be disassembled, and then the functional module can be disassembled from the operation panel 20 and then stored in the bottom case 12 .

By setting the bottom case 12, the functional modules and connecting wires are stored in the bottom case 12, and by setting the operation panel 20, to carry out the experimental teaching of the single-chip microcomputer and demonstrate the required functions, only the selected functional modules need to be removed from the bottom case 12. Take it out, assemble it on the operation panel 20, and then use the connecting wire to connect. The connection is simple and convenient, and the selected functional modules will not be interfered by other unselected functional modules; in addition, when it is necessary to demonstrate new functions, only It is only necessary to add new functional modules, which is convenient for expansion and maintenance of each functional module.

Further, the upper cover 11 can be hinged on the bottom case 12 . When the modular single-chip experiment box 100 is not used, the upper cover 11 can be covered on the bottom case 12; and when the modular single-chip experiment box 100 is needed, the corresponding functional modules can be assembled on the operation panel 20 by opening the upper cover 11 .

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , the operation panel 20 includes a support plate 21 , and a plurality of insertion holes 211 are opened on the support plate 21 . A support plate 21 is provided for supporting the functional module when the functional module is assembled. Specifically, the functional modules are inserted into the jacks 211 , so that the functional modules are fixed on the support plate 21 , which facilitates assembly using connecting wires.

Further, several jacks 211 are arranged and distributed on the support plate 21 in a rectangular shape, so as to facilitate the design and layout of the functional modules.

Further, the operation board 20 also includes a reinforcement board 22 for cooperating with the support board 21 to fix the functional modules. The reinforcement board 22 is located on the side of the support board 21 close to the top surface of the upper cover 11 . The reinforcing plate 22 is provided. When the functional module is assembled and fixed on the supporting plate 21, the functional module can be kept stable by the reinforcing plate 22 to better support the functional module. Furthermore, the reinforcing plate 22 is spaced apart from the supporting plate 21 . The reinforcing plate 22 and the supporting plate 21 are spaced apart so as to more stably support the functional modules.

Please refer to Fig. 1, Fig. 2 and Fig. 3 together, function module comprises core board and function expansion module 50; On the operation board 20, the function expansion module 50 is electrically connected with the core board by using a connection line to form a specific function combination to realize a specific single-chip function experiment.

There may be one or more function expansion modules 50, or one or more types. The function expansion module 50 includes a support base plate 51 , and an assembly part 52 is disposed on the base plate 51 . When the function expansion module 50 is fixed on the support plate 21 of the operation panel 20 , the assembly part 52 can be inserted into the socket 211 of the support plate 21 , so as to fix the function expansion module 50 on the support plate 21 . Specifically, the assembly part 52 may be a support column, so as to be inserted into the insertion hole 211 of the support plate 21 conveniently. Furthermore, the reinforcing plate 22 can be a magnetic plate, and the support column can be a magnetic column, so that when the assembly part 52 is inserted into the corresponding socket 211, it can be absorbed by the reinforcing plate 22, so as to facilitate fixing and supporting the function expansion module 50 .

Similarly, the core board also includes the above-mentioned bottom board 51 , and the above-mentioned assembly parts 52 are arranged on the bottom board 51 to facilitate fixing the core board on the operation board 20 .

Specifically, the function expansion module 50 is one or more of a memory interface module, a function expansion interface module, an interface chip module, a data conversion module, a communication interface module, an input/output module, an extended input/output module, and a control object module. Therefore, when different function expansion modules 50 are assembled with the core board, different function combinations can be formed to realize different single-chip function experiments. Further, the core board and various function expansion modules 50, such as a memory interface module, a function expansion interface module, an interface chip module, a data conversion module, a communication interface module, an input-output module, an extended input-output module, and a control object module can be stored In the bottom case 12, when in use, it is only necessary to assemble the optional function expansion module 50 with the corresponding core board.

Please refer to Figure 4. The core board includes a single-chip microcomputer with 40 pins. The P0 group pins of the single-chip microcomputer are drawn out from two ten-pin double-row sockets, and the P1 group pins of the single-chip microcomputer are drawn out from two ten-pin double-row sockets. The P2 group pins are led out by two ten-pin double-row sockets, the P3 group pins of the single-chip microcomputer are led out by two ten-pin double-row sockets, the ISP interface of the single-chip microcomputer is led out by a ten-pin socket, and the matrix keyboard interface of the single-chip microcomputer is led out by a ten-pin double-row socket. Pin double-row socket lead out. Use a single-chip microcomputer with 40 pins, so that the single-chip microcomputer has rich interfaces to complete different functions. Use two ten-pin double-row sockets to lead out the P0 group to P3 group pins of the microcontroller, then when in use, you can group P0 to P3 group pins, and the two ten-pin double-row sockets corresponding to each group of pins One of the ten-pin double-row sockets is electrically connected with a connecting wire, and the other ten-pin double-row socket can detect the potential of the corresponding pins during the test, which is convenient for testing and adjustment. The P0 group pins, P1 group pins, P2 group pins, P3 group pins, ISP interface, and matrix keyboard interface are all led out by ten-pin double-row sockets, and the uniform specification of the cables can be used to facilitate the connection. P0 group of pins refers to the eight pins of P0.0-P0.7 of the single-chip microcomputer; P1 group of pins refers to the eight pins of P1.0-P1.7 of the single-chip microcomputer; P2 group of pins refers to the P2.0 of the single-chip microcomputer -The eight pins of P2.7; the P3 group of pins refers to the eight pins of P3.0-P3.7 of the microcontroller. Specifically, please refer to part a of FIG. 4 , in this embodiment, the single-chip microcomputer with 40 pins may be an AT89S52 chip. In other embodiments, the 40-pin microcontroller may also be other processor chips. The structural schematic diagram of the lead-out wiring of each group of pins from the ten-pin double-row socket can be connected by referring to the wiring structure of the P3 group of pins in Figure 4b; for example, connect the first pin of the ten-pin double-row socket P34 to 5V For power supply, connect the 10th pin of the ten-pin double-row socket P34 to the ground, and connect the other 8 pins to the 8 pins in the P3 group of pins.

Further, the signal pins of the function expansion module 50 are drawn out from a ten-pin double-row socket, and the control pins of the function expansion module 50 are drawn out from a ten-pin double-row socket. Therefore, the connection can be facilitated, such as directly using a ten-pin cable to connect with the function expansion module 50, and then electrically connect with the core board, and the wire connection is convenient.

Further, in the above-mentioned function expansion module 50:

The above memory interface module is one or more of serial EEPROM interface, SRAM62256 and Flash Memory. Specifically, the serial EEPROM interface may use a 24C0x type serial EEPROM. Flash Memory can adopt the Flash Memory of model 29C10.

The function expansion interface module is one or more of 8253 counter expansion interface, 8259 interrupt expansion interface, 8237DMA, LM331 and SD card read-write interface.

The above interface chip module is one or more of communication calendar storage, audio chip and MP3 chip. Furthermore, the audio chip can have a microphone and a recording and playback function to enrich the functions of the modular single-chip experiment box 100 .

The above data conversion module is one or more of parallel A/D conversion interface, parallel D/A conversion interface, serial A/D conversion interface and serial D/A conversion interface. Specifically, the model of the parallel A/D conversion interface may be ADC0809. Of course, in other embodiments, the parallel A/D conversion interface can also use other models. Specifically, the model of the parallel D/A conversion interface may be DAC0832. Of course, in other embodiments, the parallel D/A conversion interface can also use other types. Specifically, the model of the serial A/D conversion interface may be TLC549. Of course, in other embodiments, the serial A/D conversion interface can also use other models. Specifically, the model of the serial D/A conversion interface can be LTC1446. Of course, in other embodiments, the serial D/A conversion interface can also use other types.

Specifically, the above communication interface module is one or more of RS-232/485, USB2.0, CAN bus interface, bluetooth interface and wifi interface.

Specifically, the above input and output modules are 8-bit logic level output (with switch), 12-bit logic level display (LED), double 8-bit logic level display (LED), 8-bit digital tube, 4×6 matrix keyboard , 16×16 two-color LED display, 1602 character liquid crystal display, 128×64 dot matrix liquid crystal display, one or more of three-color light-emitting diodes and buzzers.

Specifically, the above-mentioned expansion input and output modules are 74LS244, 74LS273, 8250 asynchronous communication, 8251 serial communication, 8253 timer/counter, 8255 parallel interface, 8279 expansion interface, DC motor and drive, stepper motor and drive, pressure (called One or more of heavy) sensors, speaker drivers, parallel expansion interfaces, serial expansion interfaces and dual-integral A/D conversion interfaces. More specifically, the parallel expansion interface can use the parallel expansion interface of model 74HC164. Of course, other models can also be used for the parallel expansion interface. More specifically, the serial expansion interface can use the serial expansion interface of model 74HC165. Of course, the serial expansion interface can also use other models. More specifically, the double integral type A/D conversion can use the double integral type A/D conversion model MC14433. Of course, other models can also be used for double integral type A/D conversion.

Specifically, the above-mentioned control object modules are one or more of relay drive, IC card and amplitude-frequency conversion, temperature sensor, infrared signal transceiver, printer interface and TFTLCD true-color liquid crystal touch screen. More specifically, the temperature sensor can be a temperature sensor with a model number of 18B20.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , a partition block 31 is installed in the bottom case 12 , and a plurality of storage chambers 32 for storage are opened in the partition block 31 . A partition block 31 is provided in the bottom case 12 to facilitate opening a storage chamber 32 on the partition block 31 . And arranging storage chamber 32 can conveniently store each functional module and connecting wire, as storing above-mentioned core board and each function expansion module 50, and can directly take out core board and the selected function expansion module 50 from storage chamber 32 when using , and then use the connecting wire to connect; when not in use, store the core board, the corresponding function expansion module 50 and the connecting wire in the storage chamber 32 .

Further, the storage chamber 32 includes a first storage chamber 321 for storing functional modules of one size and a wire storage chamber 323 for storing connecting wires. The first storage chamber 321 and the wire storage chamber 323 are provided to store the functional modules and connecting wires in different chambers for easy access. Multiple first storage chambers 321 can be provided to store different functional modules respectively. Specifically, each first storage chamber 321 can store a core board and a function expansion module 50 respectively.

Further, the storage chamber 32 also includes a second storage chamber 322 for storing functional modules of another size. Since the sizes of functional modules, such as different functional expansion modules 50 , may be designed differently, the second storage cavity 322 can be provided to better and stably store different expansion modules. There may also be multiple second storage chambers 322 .

Furthermore, the storage chamber 32 also includes a third storage chamber 324 for storing accessories and/or tools. A third storage chamber 324 is provided for storing accessories and/or tools for convenient assembly of functional modules.

Furthermore, the storage chamber 32 also includes a spare chamber 325, and the spare chamber 325 is set to facilitate the addition of other function expansion modules 50, other function modules or other components, so as to facilitate the function expansion of the modular single-chip experiment box 100 .

The modular single-chip experiment box 100 of the utility model can assemble the core board and the required function expansion module 50 into a required function combination during use, thereby completely eliminating the interference of the temporarily unused modules for the experiment. The functional modules selected for the experiment operation can be installed on the operation panel 20, can be arranged flexibly, and can also be removed for observation at will, which is conducive to the observation and display of the experimental results, and is also convenient for the teacher to guide and supervise the students.

The modular single-chip experiment box 100 of the utility model can make full use of the space of the experiment box. The core board and function expansion module 50 corresponding to various functional modules, connecting wires, accessories/tools, etc. can be stored in the bottom shell 12 of the box body 10, and the modules selected during the experiment are installed in the operation of opening the upper cover 11 of the experimental box plate 20. The operating area of the operating panel 20 is only slightly smaller than the storage area of the experimental box.

The modular single-chip experiment box 100 of the utility model is convenient for experiment design and equipment maintenance. The form of the control interface and signal interface of the core board and each function expansion module 50 is unified, that is, the form of the control interface and signal interface of each module is unified, and the types of connection lines are reduced, and they can be combined with each other conveniently and quickly, which is conducive to students' deep understanding of single-chip microcomputers. Application system design principles and actual development process. When a functional module fails, it is more convenient to repair and replace.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. a kind of Modularized laboratory box of micro-controller, it is characterised in that including casing, is provided with described casing：For carrying out list The functional module of piece machine experiment, for the power module powered for described functional module and some connections for being electrically connected with Line；Described casing includes covering and for storing the drain pan of described functional module and described connecting line, and described upper lid is installed on institute State on drain pan, be provided with for the detachable operation panel assembling described functional module in described upper lid.

2. Modularized laboratory box of micro-controller as claimed in claim 1 is it is characterised in that described operation panel is included for supporting State the gripper shoe of functional module, described gripper shoe offers some jacks for the fixing described functional module of plug-in mounting.

3. Modularized laboratory box of micro-controller as claimed in claim 2 is it is characterised in that described operation panel is also included for coordinating The securing plate of the fixing described functional module of described gripper shoe, described securing plate is located at described gripper shoe near described upper cover top surface Side.

4. Modularized laboratory box of micro-controller as claimed in claim 2 or claim 3 is it is characterised in that described functional module includes core Plate and for described core board be electrical connected with realize function of the MCU experiment function expanding module.

5. Modularized laboratory box of micro-controller as claimed in claim 4 is it is characterised in that described function expanding module is memorizer Interface module, Function Extension interface module, interface chip module, data conversion module, communication interface modules, input and output mould Block, extension one or more of input/output module and control object module.

6. Modularized laboratory box of micro-controller as claimed in claim 4 is it is characterised in that described core board includes having 40 pins and draws The single-chip microcomputer of foot, the P0 group pin of described single-chip microcomputer is drawn by the double socket of two ten pins, the P1 group pin of described single-chip microcomputer by The double socket of two ten pins is drawn, the P2 group pin of described single-chip microcomputer is by two ten pins double socket extractions, described single-chip microcomputer Being drawn by the double socket of two ten pins of P3 group pin, the ISP interface of described single-chip microcomputer is drawn by ten needle sockets, described list The matrix keyboard interface of piece machine is drawn by the double socket of ten pin.

7. Modularized laboratory box of micro-controller as claimed in claim 6 is it is characterised in that the signal of described function expanding module draws Foot is drawn by the double socket of ten pin, and the controlling switch of described function expanding module is drawn by the double socket of ten pin.

8. the Modularized laboratory box of micro-controller as described in any one of claim 1-3 is it is characterised in that coordinate peace in described drain pan Equipped with spacing block, in described spacing block, offer some storage chambers for storage.

9. Modularized laboratory box of micro-controller as claimed in claim 8 is it is characterised in that described storage chamber is included for storing A kind of first storage chamber of the described functional module of size and the storage line chamber for storing described connecting line.

10. Modularized laboratory box of micro-controller as claimed in claim 9 it is characterised in that described storage chamber also include for Second storage chamber of the described functional module of another kind of size of storage.