CN101785725B - Auto-darkening welding filter capable of automatically setting shade number - Google Patents
Auto-darkening welding filter capable of automatically setting shade number Download PDFInfo
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- CN101785725B CN101785725B CN 201010107522 CN201010107522A CN101785725B CN 101785725 B CN101785725 B CN 101785725B CN 201010107522 CN201010107522 CN 201010107522 CN 201010107522 A CN201010107522 A CN 201010107522A CN 101785725 B CN101785725 B CN 101785725B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/04—Eye-masks ; Devices to be worn on the face, not intended for looking through; Eye-pads for sunbathing
- A61F9/06—Masks, shields or hoods for welders
- A61F9/065—Masks, shields or hoods for welders use of particular optical filters
- A61F9/067—Masks, shields or hoods for welders use of particular optical filters with variable transmission
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
- G02F1/13318—Circuits comprising a photodetector
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Abstract
The invention discloses an auto-darkening welding filter capable of automatically setting a shade number, comprising a liquid crystal lens group, light sensitive tubes, a trigger circuit and a singlechip. Two groups of light sensitive tubes are provided, one group includes infrared light sensitive tubes and the other group includes green light sensitive tubes, wherein, the infrared light sensitive tubes are used for detecting welding arc light and controlling the work of the singlechip through the trigger circuit; the green light sensitive tubes are used for detecting green light signals in the welding arc light and transmitting the detected signal to a matched light intensity processing circuit; the detected signal is processed into a light intensity signal by the light intensity processing circuit and is then transmitted to the singlechip; and the singlechip automatically controls the darkening of the liquid crystal lens group according to the green light intensity value. The filter overcomes the problem of damage to the users by the existing darkening welding filter owning to using complexity and easy misoperation.
Description
Technical field
The present invention relates to a kind of darkening welding filter capable that shade number is set automatically according to welding arc light actual light intensity.
Background technology
Existing darkening welding filter capable before use, need the operator with reference to table 3 in " welding goggles and face shield GB 3609.1-83 " shade number value after filter lens becomes light to be set manually according to the welds types that will carry out and size that prepare to use electric current, whenever the operator reselect welds types or change when using electric current, all need the helmet taken off and arrange again the shade number value after filter lens becomes light, this makes troubles not only for operator's work, increased a large amount of man-hours virtually, the operator who particularly has forgets that remodifying setting just carries out new welding operation, and makes eye damage.
Summary of the invention
At the problem that prior art exists, the object of the present invention is to provide a kind ofly can the automatic darkening welding filter lens that filter lens becomes the shade number behind the light be set automatically according to welding arc light light intensity.
For achieving the above object, the automatic darkening welding filter lens that shade number is set automatically of the present invention, comprise the liquid crystal lens group, photosensitive tube, circuits for triggering and single-chip microcomputer, described photosensitive tube comprises two groups, one group is infrared photosensitive tube, another group is the green glow photosensitive tube, the quick pipe of its mid-infrared light is used for detecting the welding arc light and controls described single-chip microcomputer work by described circuits for triggering, the green glow photosensitive tube is for detection of the green optical signal in the welding arc light, and institute's detection signal is transferred to light intensity treatment circuit with its coupling, be transferred to single-chip microcomputer after becoming light intensity signal by the light intensity processing circuit processes, single-chip microcomputer according to the green glow light intensity value automatically the described liquid crystal lens group of control become light.
Further, the shade number behind the described liquid crystal lens group change light is corresponding with the light intensity value of welding arc light medium green light component.
Further, this automatic darkening welding filter lens also comprises the shade number adjusting device, and this shade number adjusting device is used for shade number is carried out trickle adjustment.
Further, this automatic darkening welding filter lens also is provided with LCD display, is used for showing the running parameter of filter lens.
Further, described running parameter comprises one or more in shade number side-play amount, sensitivity and the time-delay state.
Further, this automatic darkening welding filter lens also is provided with for the battery of its work and the battery electric quantity testing circuit that links to each other with described single-chip microcomputer.
Further, this automatic darkening welding filter lens also is provided with the buzzer that is used for sending alarm signal that links to each other with described single-chip microcomputer.
Further, described infrared photosensitive tube and green glow photosensitive tube comprise two for every group.
Further, described battery is included as the lithium battery of whole darkening welding filter capable power supply and is the silicon cell of lithium cell charging, wherein lithium battery is connected with power supply voltage stabilizing chip, and be the power supply of whole darkening welding filter capable through power supply voltage stabilizing chip, when surround lighting＞10 luxs, the silicon cell output current is given lithium cell charging, and when surround lighting＜10 luxs, power supply voltage stabilizing chip is closed and made whole darkening welding filter capable handle closed condition.
Further, described LCD display also shows detected described battery electric quantity.
Further, described LCD display shows detected described battery electric quantity with the form of image and/or grizzly bar.
Further, described LCD display shows described shade number in digital form.
Further, when described running parameter changed, described buzzer was sounded.
Further, when setting threshold values, described buzzer is sounded at described battery electric quantity.
Compared with prior art, beneficial effect of the present invention is:
The automatic darkening welding filter lens that shade number is set automatically of the present invention has increased green glow photosensitive tube and light intensity treatment circuit, can come by the light intensity value that detects green glow in the welding arc light to extrapolate the shade number that need arrange by the software in the single-chip microcomputer, and by program shade number is set automatically, adjust amplitude of output voltage.This is with the inconvenience of very effective minimizing welding user; really accomplish the full-automatic product of a kind of " fool " type; thereby make the operator before welding, needn't carry out the parameter setting according to the numerical value on the handbook; use time and training time have been reduced; reduced the technical threshold of user; also can protect user more fully, avoid forgetting arranging or arrange the wrong eye injury that causes.
Equally, the present invention has also adopted every performance and the battery electric quantity of LCD display demonstration shade number, sensitivity and time-delay, can understand the situation of automatic darkening welding filter lens more intuitively in real time.Adopt the auditory tone cues effect of buzzer, can remind change and the battery electric quantity deficiency of operator's performance setting more timely, improved the security performance of using.Adopted singlechip application programs to control entire circuit, can make the circuit of long-time triggering also can maintain a stationary value.The present invention can make the liquid crystal lens group become dark attitude by bright attitude in-10 ℃ to+60 ℃ broad temperature range quickly, can protect welder's eyes more practicably, stably, accurately, effectively, avoids being subjected to the infringement of harmful light radiation.And owing to use single-chip microcomputer to be the core of circuit control system, adequate space in the single-chip microcomputer can greatly strengthen extensibility of the present invention for being attached to lens set or using other function on the welding goggles of this lens set to reserve certain procedure space and external interface.
Description of drawings
Fig. 1 is circuit block diagram of the present invention;
Fig. 2 is single-chip microcomputer and each port section electrical connection graph of LCD display of the embodiment of the invention;
Fig. 3 is the single-chip microcomputer of the embodiment of the invention and the electrical connection graph of buzzer;
Fig. 4 is the power supply circuit schematic diagram of the embodiment of the invention;
Fig. 5 is the light intensity treatment circuit schematic diagram of the embodiment of the invention;
Fig. 6 is the circuits for triggering schematic diagram of the embodiment of the invention;
Fig. 7 is the booster circuit schematic diagram of the embodiment of the invention;
Fig. 8 is that each port section of single-chip microcomputer of the embodiment of the invention is electrically connected circuit diagram;
Fig. 9 is the front schematic view of the embodiment of the invention;
Figure 10 is the reverse side sketch map of the embodiment of the invention;
Figure 11 is for looking quick function curve relatively.
Each parts labelling is as follows among Fig. 1-10:
1. single-chip microcomputer; 2.LCD display screen; 3. delay switch is regulated button; 4. the shade number side-play amount is regulated button; 5. sensitivity adjusting button; 6. battery electric quantity shows; 7. green glow photosensitive tube; 8. infrared photosensitive tube; 9. light intensity treatment circuit; 10. circuits for triggering; 11. critesistor; 12. signal output apparatus; 13. temperature-compensation circuit; 14. booster circuit; 15. liquid crystal lens group; 16. silicon cell; 17. lithium battery; 18. power supply voltage stabilizing chip; 19. buzzer.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Shown in the circuit theory diagrams of Fig. 1, single-chip microcomputer 1 and sensitivity adjusting button 5, the shade number side-play amount is regulated button 4, delay switch is regulated button 3, circuits for triggering 10, critesistor 11, signal output apparatus 12, temperature-compensation circuit 13, booster circuit 14 and power supply voltage stabilizing chip 18 are electrically connected; Infrared photosensitive tube 8 and circuits for triggering 10 are electrically connected; Green glow photosensitive tube 7 and light intensity treatment circuit 9 are electrically connected, liquid crystal lens group 15 while and signal output apparatus 12, and temperature-compensation circuit 13 and booster circuit 14 are electrically connected; Lithium battery 17 and power supply voltage stabilizing chip 18 are electrically connected, and silicon cell 16 and lithium battery 17 are electrically connected.
The circuit startup that is triggered after receiving the light intensity signal (generally greater than 10 luxs) that is detected by infrared photosensitive tube 8, single-chip microcomputer 1 system is in holding state.
Circuit is receiving the light intensity signal that green glow photosensitive tube 7 detects, and by being input in single-chip microcomputer 1 system after 9 processing of light intensity treatment circuit, single-chip microcomputer 1 will be calculated according to program and be satisfied this light intensity signal, and the numerical value of the parameter of satisfied " welding goggles and face shield GB 3609.1-83 " middle table 3 manual electric arc welding optical filter, and it is set to the reference value of output signal.7 every groups two of infrared photosensitive tube 8 and green glow photosensitive tubes, the quantity of infrared photosensitive tube 8 and green glow photosensitive tube 7 is not limited only to two every group, can adjust voluntarily as required.Wherein the schematic diagram of circuits for triggering 10 and light intensity treatment circuit 9 such as Fig. 6 and 5 illustrate.
Each port section of single-chip microcomputer as shown in Figure 8 is electrically connected circuit diagram, and single-chip microcomputer 1 is three control signals of output outwards:
First is the driving to signal output apparatus 12, adjust the magnitude of voltage that applies pulse output voltage to liquid crystal lens group 15 by single-chip microcomputer 1 control signal output circuit 12, it is reached and handled by light intensity treatment circuit 9 after the magnitude of voltage of the corresponding shade number that obtains, this magnitude of voltage is the basic voltage value that makes the deepening of liquid crystal lens group.
Second is the driving to temperature-compensation circuit 13, controls temperature-compensation circuit 13 to liquid crystal lens group 15 output temperature bucking voltages by single-chip microcomputer 1.Detected temperature and sent data to single-chip microcomputer 1 by critesistor 11, single-chip microcomputer 1 is according to the corresponding bucking voltage of this temperature in the temperature-compensating list procedure that is transfused in advance, and control temperature-compensation circuit 13 paired pulses output voltages are made corresponding adjustment.
The 3rd is the driving to booster circuit 14, by the high level voltage of single-chip microcomputer 1 control booster circuit 14 to liquid crystal lens group 15 output 24V, in order to system voltage (5V) is added to a quite high level (24V), accelerate the rate of transformation of liquid crystal lens group 15.As shown in Figure 7, booster circuit 14 is made up of diode 6 voltage doubling rectifing circuits.The 5V system voltage is adjusted to the high level (24V) that needs by the control section that divider resistance and metal-oxide-semiconductor circuit constitute by the high level charging pulse of control single chip computer output.
Liquid crystal lens group 15 receive by single-chip microcomputer 1 drive adjust according to temperature after pulse output voltage and the high level voltage of booster circuit 14 after, liquid crystal light valve overturns, liquid crystal lens group 15 is according to the value of different shade numbers, with reference to formula:
N(Ev)＝2.93+2.25log(Ev/lx)
Wherein: Ev represents light intensity, the unit lux; N (Ev) represents that shade number corresponding under this light intensity (is selected from: Europe superscript BS EN 379:2003)
Decide the degree of deepening, begin to bring into play the effect of protection eyes.The time of whole deepening process is about 0.3 millisecond.
As shown in Figures 9 and 10, filter lens of the present invention comprises that shell, liquid crystal lens group 15, delay switch are regulated button 3, the shade number side-play amount is regulated button 4, sensitivity adjusting button 5;
When pressing delay switch adjusting button 3, the sign of expression time-delay state is in state of activation on the LCD display 2, indicate current time-delay state, when wanting to change state, can repeat to push button, mode with circulation on the LCD display 2 demonstrates the time-delay state, as long as switch to the time-delay state of expectation, stops to press button and gets final product.Delay switch is regulated button 3 also can adopt the knob mode.
In addition, sensitivity adjusting button 5, its working method is similar with time-delay adjusting button 3, presses sensitivity adjusting button 5, and sensitivity increases gradually, increases to after the maximum, becomes minima, and then continues to increase, so circulation.It is evident that in contrast, sensitivity also can be set to diminishingly work, and also can play same function.Although sensitivity adjusting button 5 is shown as button, it is evident that this only is exemplary, can realize with other forms, for example utilize knob.
In addition, the shade number side-play amount is regulated button 4 and is used in a positive and negative shade number by manual setting to satisfy the custom deviation of dissimilar user, the numerical value that this side-play amount does not influence table 3 manual electric arc welding optical filter in " welding goggles and face shield GB 3609.1-83 " just can carry out trickle adjusting in allowed limits.
Fig. 3 shows the buzzer circuit sketch map that is connected with single-chip microcomputer in the filter lens of the present invention.
When the running parameter at the automatic darkening welding filter lens with LCD display changed, described buzzer was sounded, and was used for reminding the change of state of operator's running parameter, made the user in time learn the running parameter of filter lens.Preferably, when different running parameter change of state, send different sound.The advantage of Bu Zhiing is like this, utilizes sound to remind the variation of user's welding job parameter, makes the user in time learn the duty of filter lens, so that convenient use better.For example, preferably, when the battery electric quantity of the automatic darkening welding filter lens with LCD display when setting threshold values, buzzer is sounded, and reminds the user, battery is in time changed battery.
In addition, the mode that buzzer is sounded is not limited to certain sound, obviously, can use various acoustical signals.As long as can make the various sound that the user hears, can be used as the sound that buzzer sends.For example, can consider comfortable, the equal angular consideration of emotion for the staff, the sound that some melodious musical sounds send as buzzer is set.
The power supply of entire circuit is provided by lithium battery 17, and silicon cell 16 can prolong the service life of lithium battery 17 effectively.As shown in figure 10, silicon cell 16 is arranged on the back of filter lens, in the process of welding goggles work, when the light intensity of external environment light is big, silicon cell 16 becomes important power supply source by absorbing extraneous light intensity, is lithium cell charging, has prolonged the service time of lithium battery.Show the power supply circuit schematic diagram as Fig. 4, when the light intensity of external environment light during less than 10 luxs, system power supply is closed automatically, has reduced the kwh loss of lithium battery.
Fig. 2 shows the sketch map of the LCD display demonstration of exemplary embodiment, shows sensitivity 201 at LCD display 2, battery electric quantity 202, shade number 203, time-delay state 204.
Particularly, sensitivity 201 is to represent that the form of the grizzly bar array of signal power shows, when highly sensitive the time, show a plurality of grizzly bars, and the height of grizzly bar is more and more higher; On the contrary, when sensitivity is low, then show a spot of grizzly bar, and the height of grizzly bar is shorter.What expect easily is, can also utilize other images, and for example asterisk (*), lines wait the size of display sensitivity.Further, sensitivity can also utilize numeral to show.Therefore, illustrated display mode only is illustrative rather than restrictive.Utilize such layout, the sensitivity that can go out automatic darkening welding filter lens with the form direct observation of displayed map picture on the LCD display, do not need to read sensitivity signal according to silk-screen and knob, therefore improved the sensitivity adjusting efficient of automatic darkening welding filter lens greatly, and avoided misreading and cause and just find wrong trouble after starting working by the time.
In addition, battery electric quantity 202 is shown as battery and shows detected battery electric quantity with the form of image and/or grizzly bar.Battery electric quantity show tags 202 is shown as the pattern of virtual battery, and the grizzly bar of expression battery electric quantity is wherein arranged, utilize grizzly bar fill the virtual battery square frame quantity how much show battery dump energy.Further, be understood that easily that battery electric quantity 202 can also utilize other modes to show, for example the numeral or other can intuitively identify the image of battery electric quantity.Utilize this layout, show electric weight with image, character style, therefore can make the welding engineer can both learn the electric weight of battery at any time, change battery or charging again where necessary, improved work efficiency.
In addition, shade number 203 shows in digital form, is used to indicate the size of shade number.As shown in Figure 2, the current shade value of numeral " 13 " indication is 13.Further, be understood that easily that shade number can also can vision reflect that other images of shade number size or the form of labelling show at LCD display with other.Utilize this layout, can identify the size of current shade number fast, thereby judge whether this numerical value is reasonable, thereby regulate.
In addition, time-delay state 204 shows the time-delay state with the form of character " slow " and " fast ".Be understood that easily, for example " soon " and " slowly ", " S " and " F ", " K " and characters such as " M " show can to utilize other characters, for example also can utilize color-coded the demonstration, demonstrate the time-delay state as " red " (expression is fast) and " green " modes such as (expression are slow).Such layout has improved the efficient of obtaining the time-delay state greatly, has improved work efficiency.
Be understood that easily, Fig. 2 only is one exemplary embodiment of the present invention, only signal has demonstrated parameters such as sensitivity 201, battery electric quantity 202, shade number 203, time-delay state 204, obviously can also show other numerals on the LCD display, for example current time etc.
The automatic darkening welding filter lens that shade number is set automatically of the present invention adopts the highest spectral sensitivity at the green-yellow light photosensitive tube at 555nm place; this is in order to ensure the requirement of satisfying among the BS EN 379:20034.4 Spectral sensitivity of welding filters with automaticscale number setting of European Union (spectral sensitivity of the electric welding optical filter of shade number setting automatically); and be for adequately protecting to human eye; this is because of human eye energy comparison spectrum wavelength and energy size, but the light of various wavelength causes human eye perceives; the sensitivity difference.Under identical radiant power condition, human eye is felt the brightest only green-yellow light.
In order to determine human eye to the sensitivity of the light of different wave length, can under the condition that obtains the same brightness sensation, measure the radiant power Pr (λ) of the light of each wavelength.Obviously, Pr (λ) is more big, and human eye is more insensitive to the light of this wavelength; And Pr (λ) is more little, and human eye is more responsive to it.Therefore, to can be used to weigh on the human eye vision each wavelength be the sensitivity of the light of λ to the inverse of Pr (λ).We just call 1/Pr (λ) and look quick function and (or claim visual acuity, visibility), with K (λ) expression: K (λ)=1/Pr (λ) as mentioned above, under bright light environments, human eye is that the green-yellow light of 555nm is the most responsive to wavelength, and available K (555)=Kmax represents here.So, can look quick function Kmax to the quick function K of looking of any wavelength light (λ) with maximum and compare, this ratio is called looks quick function relatively, and represent with V (λ).That is: V (λ)=K (λ)/Kmax=K (λ)/K (555)=Pr (555)/Pr (λ) is obvious, and except 555nm, the V on each wavelength (λ) is the number less than 1.By the experiment statistics to the normal person of a large amount of visions, can obtain the quick function curve of looking relatively shown in Figure 11.As seen, under the identical condition of radiant power, the green-yellow light of human eye perceives 555nm is the brightest, and wavelength reduces left and to the right gradually from 555nm, and brightness sensation descends gradually.
And the spectrum of electro-welding arc is the full gloss spectrum, has comprised infrared ray, luminous ray, three parts of ultraviolet, and in the evenly distribution of visible light part.The optical filter filtering that infrared ray and ultraviolet are included in the liquid crystal lens group can not damage human eye.Thereby by judging that the most responsive green-yellow light light intensity of human eye perception in the visible light part can be more effectively and weigh out the light intensity intensity of nature optical range reliably, and more effectively provide protection to eyes.
Green-yellow light (555nm) photosensitive tube converts the light intensity signal of the part of the green-yellow light in the electric welding arc light to the signal of telecommunication, and and light intensity is linear, by operational amplification circuit the more weak comparatively speaking signal of telecommunication is amplified, make it can satisfy the amplitude level that the AD acquisition interface is gathered in the single-chip microcomputer, we adopt the single-chip microcomputer with 8 AD acquisition interface effectively to change by gathering the light intensity that reflects visible light really.
Single-chip microcomputer will come obtain corresponding light intensity signal with reference to experimental data according to the size of magnitude of voltage, and with reference to formula:
N(Ev)＝2.93+2.25log(Ev/lx)
Wherein: Ev represents light intensity, the unit lux; N (Ev) represents under this light intensity that (be selected from: dark attitude shade number and the relation of ambient light illumination in the following table of Europe superscript BS EN 379:2003) obtaining obtains the shade number value of needs setting to corresponding shade number, and circuit will be exported the magnitude of voltage that satisfies this value.
The dark attitude shade number of table 1 and ambient light illumination
| Dark attitude |
8 | 9 | 10 | 11 | 12 | 13 | 14 |
| Illumination E v /lx | 180 | 500 | 1400 | 3900 | 10700 | 30000 | 83000 |
Equally, after the green-yellow light photosensitive tube detects the green-yellow light light intensity and changes, single-chip microcomputer will be made the modification of output voltage values to satisfy the shade number of new situation.Or detect less than high light non-output signal, the liquid crystal lens group is brightened.
Advantage: at present; the general darkening welding filter capable that uses need be before welding selects manually to arrange the value that needs shade number with reference to the use of table 3 manual electric arc welding optical filter in " welding goggles and face shield GB3609.1-83 " by the type that oneself will weld and the size of used electric current; but when the workman changes the welding type of usefulness or electric current again; just the helmet need be lifted down shade number is set; this inconvenience very; increased a large amount of man-hours virtually; the Welder who particularly has has forgotten that revising setting in the past just carries out new welding; this will increase the injury to welder's eyes, and the user eyes are not accomplished sufficient protection yet.
It is to be noted and any distortion of making according to the specific embodiment of the present invention all do not break away from the scope that spirit of the present invention and claim are put down in writing.
Claims (9)
1. automatic darkening welding filter lens that shade number is set automatically, it is characterized in that, comprise the liquid crystal lens group, photosensitive tube, circuits for triggering, critesistor, signal output apparatus, temperature-compensation circuit and single-chip microcomputer, described photosensitive tube comprises two groups, one group is infrared photosensitive tube, another group is the green glow photosensitive tube of the highest spectral sensitivity at the 555nm place, wherein said infrared photosensitive pipe is used for detecting the welding arc light and controls described single-chip microcomputer work by described circuits for triggering, described green glow photosensitive tube is for detection of the green optical signal in the welding arc light, and institute's detection signal is transferred to light intensity treatment circuit with its coupling, be transferred to described single-chip microcomputer after becoming light intensity signal by described light intensity processing circuit processes, described single-chip microcomputer according to the green glow light intensity value automatically the described liquid crystal lens group of control become light; The described signal output apparatus of described Single-chip Controlling is adjusted the magnitude of voltage that applies pulse output voltage to the liquid crystal lens group, makes it reach the magnitude of voltage of the corresponding shade number that obtains after the described light intensity processing circuit processes; The described temperature-compensation circuit of described Single-chip Controlling is to described liquid crystal lens group output temperature bucking voltage; Described critesistor detects temperature and sends data to described single-chip microcomputer, and described single-chip microcomputer is according to the corresponding bucking voltage of this temperature in the temperature-compensating list procedure that is transfused in advance, and control temperature-compensation circuit paired pulses output voltage is made corresponding adjustment.
2. automatic darkening welding filter lens as claimed in claim 1 is characterized in that, the shade number that described liquid crystal lens group becomes behind the light is corresponding with the light intensity value of welding arc light medium green light component.
3. automatic darkening welding filter lens as claimed in claim 1 is characterized in that, this automatic darkening welding filter lens also comprises the shade number adjusting device, and this shade number adjusting device is used for shade number is carried out trickle adjustment.
4. automatic darkening welding filter lens as claimed in claim 1 is characterized in that, this automatic darkening welding filter lens also is provided with LCD display, is used for showing the running parameter of filter lens.
5. automatic darkening welding filter lens as claimed in claim 4 is characterized in that, described running parameter comprises one or more in shade number side-play amount, sensitivity and the time-delay state.
6. automatic darkening welding filter lens as claimed in claim 1 is characterized in that, this automatic darkening welding filter lens also is provided with for the battery of its work and the battery electric quantity testing circuit that links to each other with described single-chip microcomputer.
7. automatic darkening welding filter lens as claimed in claim 1 is characterized in that, this automatic darkening welding filter lens also is provided with the buzzer that is used for sending alarm signal that links to each other with described single-chip microcomputer.
8. automatic darkening welding filter lens as claimed in claim 1 is characterized in that, described infrared photosensitive tube and green glow photosensitive tube comprise two for every group.
9. automatic darkening welding filter lens as claimed in claim 6, it is characterized in that, described battery is included as the lithium battery of whole darkening welding filter capable power supply and is the silicon cell of lithium cell charging, wherein lithium battery is connected with power supply voltage stabilizing chip, and be the power supply of whole darkening welding filter capable through power supply voltage stabilizing chip, when surround lighting＞10 luxs, the silicon cell output current is given lithium cell charging, when surround lighting＜10 luxs, power supply voltage stabilizing chip is closed and is made whole darkening welding filter capable be in closed condition.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010107522 CN101785725B (en) | 2010-02-09 | 2010-02-09 | Auto-darkening welding filter capable of automatically setting shade number |
| PCT/CN2010/072236 WO2011097841A1 (en) | 2010-02-09 | 2010-04-27 | Automatic light-changing welding filter lens capable of automatically setting shading number |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010107522 CN101785725B (en) | 2010-02-09 | 2010-02-09 | Auto-darkening welding filter capable of automatically setting shade number |
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| CN101785725A CN101785725A (en) | 2010-07-28 |
| CN101785725B true CN101785725B (en) | 2013-07-03 |
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| WO (1) | WO2011097841A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445325A (en) * | 2010-10-13 | 2012-05-09 | 上海市安全生产科学研究所 | Device and method for measuring shade number of automatic darkening welding filter |
| CN102579189A (en) * | 2011-01-12 | 2012-07-18 | 玛斯克光电科技股份有限公司 | Electric welding filter device and control method thereof |
| CN102499814A (en) * | 2011-10-14 | 2012-06-20 | 无锡市胤成科技有限公司 | System capable of effectively improving response speed of auto darkening welding helmet |
| CN102654594B (en) * | 2012-03-16 | 2015-02-25 | 京东方科技集团股份有限公司 | Half-transmitting and half-reflecting type color filter and manufacturing method thereof |
| CN104116590A (en) * | 2013-04-27 | 2014-10-29 | 李骥超 | Circuit implementation method used for lens group dimming control in welding mask |
| CN204092330U (en) * | 2014-09-09 | 2015-01-14 | 泰克曼(南京)电子有限公司 | Touch operation screen formula Auto-changing Shade Welding Mask Made |
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| WO2011097841A1 (en) | 2011-08-18 |
| CN101785725A (en) | 2010-07-28 |
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