CN2168571Y - Electronic welding mirror - Google Patents
Electronic welding mirror Download PDFInfo
- Publication number
- CN2168571Y CN2168571Y CN 93212815 CN93212815U CN2168571Y CN 2168571 Y CN2168571 Y CN 2168571Y CN 93212815 CN93212815 CN 93212815 CN 93212815 U CN93212815 U CN 93212815U CN 2168571 Y CN2168571 Y CN 2168571Y
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- circuit
- light valve
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- utility
- light
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Abstract
The utility model relates to a pair of electronic welding glasses used for electric welding, comprising a photoactive sample circuit, a light valve, a light valve drive circuit, an amplifying circuit for sampling voltage, a comparison circuit for amplified signal voltage, an anti-background (daylight and lamp light) disturbance circuit and a light valve control circuit. The utility model has the advantages of simple structure, low cost, practicability, convenient operation and strong interference rejection. The utility model which is transparent when arc does not exist changes to blue black instantly when arc appears, which not only protects the eyes of welders effectively, but also has the advantages of high efficiency and good welding quality.
Description
This utility model is used to protect the instrument of eyes when relating to a kind of electric welding, particularly relate to a kind of electronics electric welding mirror.
The most frequently used instrument of protection eyes is the helmet-type protective cover during electric welding at present, and welding lens is a glass lens, and color is a black, and light transmission is poor, when arc light is not arranged, sees through eyeglass and can't see the scene clearly, and is very inconvenient during use.In order to improve this helmet-type protective cover, work out some novel electric welding mirrors in succession, as the quick photoelectricity variable color of patent 89206160.X welding goggles, patent 89209802.0 liquid crystal light valve protective eye lens etc., they respectively have the characteristic of oneself, and are very practical, but also exist the incomplete place of part, for example, or anti-background (daylight, light) disturb poor or electric welding machine had requirement of strictness or the like.
The purpose of this utility model is to provide and overcomes above-mentioned insufficient novel electron electric welding mirror.
This utility model is to realize like this.This utility model contains photosensitive sample circuit, light valve and light valve drive circuit, and it is characterised in that it also contains and is useful on the sampled signal amplifying circuit, to the amplifying signal comparison circuit, and anti-ambient interferences circuit and light valve control circuit.This utility model can be made various pattern, as helmet-type, face mask type or other pattern.
The utlity model has following characteristics:
1. this utility model is clear state when no arc light, is convenient to operate electric welding, and the moment that arc light occurs is changed atrous into, protected electric welder's eyes effectively, and the work efficiency high welding quality is good.
2. have stronger anti-background (as daylight, accent light) and disturb, can not influence environment of observation because of having stronger daylight, light to make this utility model variable color.
3. with electron-like electric welding mirror compare, response speed is fast, window is big (light valve is big), eyeglass
4. the outside of this utility model light valve can be equipped with colored transparent mirror or color changeable transparent mirror, not only can protect eyes effectively, but also the long-life of protection light valve.
Accompanying drawing 1 is a frame principle figure of the present utility model.
Accompanying drawing 2 is electrical schematic diagrams of the present utility model.
The utility model will be further described below in conjunction with accompanying drawing.
In the drawings, light sensitive diode D has constituted photosensitive sample circuit, and (wavelength＜380mm) has sensitivity preferably to arc light, ultraviolet light for it; Operational amplifier IC1, IC2 constitute the sampling voltage amplifying circuit, and they are secondary proportional amplifiers, and its amplification is respectively R3/R1 and R6/R5; Operational amplifier IC3 constitutes the amplifying signal voltage comparator circuit, its standard of comparison voltage is from anti-ambient interferences circuit, anti-ambient interferences circuit is made of resistance R 10 and Zener diode DW, when not having arc light, under strong daylight, light sensitive diode D also has signal of telecommunication output, after two-level operating amplifier amplifies, an output voltage is arranged, the voltage stabilizing of Zener diode DW is selected bigger slightly than this output voltage, make two voltage ratios than the time, the comparison circuit no-output can reach antisum and disturb; Two XOR gate IC4, IC5 constitute light valve drive circuit, and they constitute multivibrator circuit, and its frequency is determined by R11, R12, C, at A point output square wave; XOR gate IC6 constitutes the light valve control circuit, and when the V point was high level, IC6 was a phase inverter, B point output voltage and A point are anti-phase, at this moment have voltage to add to light valve P, light valve presents black, if V is a low level, IC6 is the homophase device, B point output voltage and A point homophase, at this moment, no-voltage adds to light valve P, light valve P is clear state, and light valve P can be a liquid crystal light valve.
Operation principle of the present utility model is such.When no arc light occurs, though light sensitive diode receives some optical signals (as daylight, light), amplify through IC1, IC2 secondary, but because the effect of anti-jamming circuit (R10, DW), the V point presents 0 level (low level), A point and B point homophase (idiostatic), so there is not voltage to add to light valve P, light valve P presents clear state, at this moment, the electric welder can see workpiece clearly, can accurately operate errorless.When the electric welder works; arc light occurs; diode D gets strong signal (than daylight, light); deliver to IC1, the amplification of IC2 secondary; amplifying output signal voltage compares with diode DW voltage of voltage regulation; because amplify output voltage signal greater than voltage of voltage regulation this moment; so comparison circuit IC3 has high voltage output; at this moment, output B point and the A point voltage of IC6 are anti-phase, have made a pressure reduction add to light valve P; light valve P then presents atrous; protect welder's eyes, but still can see workpiece, guaranteed the quality of electric welding.
Light valve is actually liquid crystal, meets light and changes its color, and during general dull thread, the transparency is good, of light color, and light is strong more, owing to be added in change in voltage on it, color is dark more, can vision protection, be commonly called as light valve, and be the electric control light valve.
This utility model used for eyes and the light valve long-life of more effectively protecting the welder, can be added with transparent colored lens or transparent color-changing lens in the light valve front.
Claims (3)
1, a kind of electronics electric welding mirror contains photosensitive sample circuit, light valve and light valve drive circuit, it is characterized in that it also contains amplifying circuit to sampled signal, comparison circuit to amplifying signal voltage, anti-ambient interferences circuit and light valve control circuit, wherein sampling amplification circuit is the ratio amplifying circuit that is made of operational amplifier, the voltage comparator of voltage comparator circuit for constituting by operational amplifier IC3, anti-ambient interferences circuit is made of resistance R 10 and stabilivolt DW, the light valve control circuit is made of XOR gate IC6, photosensitive sample circuit accesses the input of sample amplifying circuit, sampling amplification circuit output connects the comparison circuit inverting input, R10 and the public termination comparison circuit of stabilivolt DW in-phase input end, comparison circuit output connects light valve control circuit and light valve drive circuit input, and the output of light valve control circuit and light valve drive circuit connects light valve.
2, electronics electric welding mirror as claimed in claim 1 is characterized in that sampling amplification circuit is the ratio amplifying circuit that two-level operating amplifier IC1, IC2 constitute.
3, electronics electric welding mirror as claimed in claim 1 is characterized in that being equipped with colored transparent eyeglass or transparent color-changing lens before light valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93212815 CN2168571Y (en) | 1993-05-15 | 1993-05-15 | Electronic welding mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93212815 CN2168571Y (en) | 1993-05-15 | 1993-05-15 | Electronic welding mirror |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2168571Y true CN2168571Y (en) | 1994-06-15 |
Family
ID=33794057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93212815 Expired - Fee Related CN2168571Y (en) | 1993-05-15 | 1993-05-15 | Electronic welding mirror |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2168571Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113244047A (en) * | 2021-06-01 | 2021-08-13 | 常州迅安科技股份有限公司 | Automatic light-changing filter lens with adaptive parameter adjustment and working method thereof |
| US11698298B2 (en) | 2021-06-01 | 2023-07-11 | Changzhou Shine Science & Technology Co., Ltd. | Automatic darkening filter with adaptive parameter adjustment and working method thereof |
-
1993
- 1993-05-15 CN CN 93212815 patent/CN2168571Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113244047A (en) * | 2021-06-01 | 2021-08-13 | 常州迅安科技股份有限公司 | Automatic light-changing filter lens with adaptive parameter adjustment and working method thereof |
| CN113244047B (en) * | 2021-06-01 | 2021-09-24 | 常州迅安科技股份有限公司 | Automatic light-changing filter lens with adaptive parameter adjustment and working method thereof |
| WO2022252273A1 (en) * | 2021-06-01 | 2022-12-08 | 常州迅安科技股份有限公司 | Auto darkening filter with parameter adaptive adjustment and working method thereof |
| US11698298B2 (en) | 2021-06-01 | 2023-07-11 | Changzhou Shine Science & Technology Co., Ltd. | Automatic darkening filter with adaptive parameter adjustment and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |