CN203851280U - Active anti-noise welding helmet - Google Patents
Active anti-noise welding helmet Download PDFInfo
- Publication number
- CN203851280U CN203851280U CN201420183117.3U CN201420183117U CN203851280U CN 203851280 U CN203851280 U CN 203851280U CN 201420183117 U CN201420183117 U CN 201420183117U CN 203851280 U CN203851280 U CN 203851280U
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- noise
- welding
- welding helmet
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- amplifier
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Abstract
The utility model relates to a labor protective device, and specially relates to an active anti-noise welding helmet used for shielding welding noises. The active anti-noise welding helmet comprises an anti-noise unit formed by a microphone capable of receiving noises, a loudspeaker capable of emitting anti-noise-wave signals, an active anti-noise circuit and an amplifier; a signal output terminal of the microphone is connected to the active anti-noise circuit; an anti-noise signal output terminal of the active anti-noise circuit is connected with the loudspeaker through the amplifier; the microphone, the loudspeaker, the active anti-noise circuit and the amplifier are all installed on the welding helmet with a welding face mask; and the loudspeaker is installed on the inner side of the welding helmet. The active anti-noise welding helmet is good in anti-noise effect and convenient to use, and energy consumption is saved.
Description
Technical field
The utility model relates to a kind of labor protection device, specifically a kind of active antinoise welding helmet for welding noise is protected.
Background technology
In welding process; between electric arc and protective gas, electric arc and work package, protective gas and work package, all can produce certain high strength; the random noise that frequency differs; add some special process; as argon arc impulse welding, argon arc exchange weldering, the operating frequency of MIG impulse welding several hertz on KHz; noise characteristics is high strength systematicness, and increases along with the increase of output current intensity.
Another kind of noise is to occur in plasma cutting process process; because working gas and protective gas flow with certain speed; compressed plasma flame flow sprays at a high speed from gun slot with the speed of 10000m/min; between the fluid layer of the different in flow rate of working gas and protective gas, between air-flow and static solid dielectric face; all interacting between air-flow and space etc.; this effect can produce periodic pressure and rises and falls and vibrate and friction, has just produced noise.And noise intensity is higher, mostly more than 100DB, and noise frequency is all more than 1000Hz.
Welding noise, the roughness meeting major injury hearing that the environment while adding welding produces, can cause temporary or permanent hearing loss.After length weld time, noise also should make operating personnel produce tired out sense simultaneously, thereby causes the Quality Down of welding or cutting, causes industrial accident when serious.
Sound insulation and noise reducing is that conventional noise control technique is produced in welding, existing face shield noise-proofing adopts passive mode, weaken exactly the conduction of sound with material, and individual noise protection mainly adopt wear Acoustic baffling ear shield or isolation earplug, but this method is uncomfortable, the interchange of some normal voice information also can have influence in addition welding time.
Active noise reduction adopts the form of noise cancelling headphone conventionally, and existing active noise reduction technology generally has two kinds of modes, and one is feed forward type (Feed-Forward), and one is reaction type (Feedback).Feed forward type (Feed-Forward) noise reduction generally has a microphone towards outside on earphone, for reception environment noise, then environmental noise is swung to 180 degree and is added on loudspeaker, just the environmental noise penetrating into can be eliminated.Another reaction type (Feedback) is mainly used in the earphone of larger wear-type, and microphone is in earphone inside.Microphone is very close to the loudspeaker of earphone inside, therefore sampling to as if the environmental noise that receives of earphone inside, and then by the elimination that superposes of the mode of feedback.
The protection that at present active noise reduction technology is applied to welding noise there is no good embodiment.
Utility model content
Technical problem to be solved in the utility model is, provides that a kind of antinoise is effective, easy to use, the active antinoise welding helmet of energy efficient.
The active antinoise welding helmet of the present utility model includes and can receive the anti-noise unit that the microphone of noise, the loud speaker that can send anti-noise acoustic signals, active noise suicide circuit and amplifier form; The signal output part of described microphone is connected to active noise suicide circuit, and the anti-noise signal output part of active noise suicide circuit is connected with loud speaker through an amplifier; Described microphone, loud speaker, active noise suicide circuit and amplifier are installed on the welding helmet with welding mask, and wherein loud speaker is arranged on welding helmet inner side.
On the described welding helmet, be also provided with can receive welding arc light photo-sensitive cell, the photoreceptor signal output of photo-sensitive cell is connected to anti-noise unit can control the startup of anti-noise unit and stop.
On the described welding helmet, solar panels are also installed, solar panels are connected to the power supply output of anti-noise unit through photoelectric switching circuit.
The essential welding helmet with face shield of wearing for the protection of eyesight of operating personnel's operation reason in the utility model utilization welding cutting process, its inside arranges active electronics denoising device, can produce the sound wave of the identical sound level of spending with noise anti-phase 180, sound wave after synthesizing in theory just becomes 0, thereby can effectively realize anti-noise; Because itself and the welding helmet are combined as a whole, operation, easy to carry; It utilizes photo-sensitive cell to carry out on off control to electronic noise reduction unit, only in welding process, carries out noise reduction, does not affect the normal speech exchange of operator while welding intermittently; It utilizes solar panels to collect the energy of welding arc light, and anti-noise unit provides power supply, and the energy consumption that can effectively reduce device has also been simplified device and formed.
Brief description of the drawings
Fig. 1 is systematic schematic diagram of the present utility model.
Embodiment
As shown in the figure, this active antinoise welding helmet includes and can receive the anti-noise unit that the microphone of noise, the loud speaker that can send anti-noise acoustic signals, active noise suicide circuit and amplifier form; The signal output part of described microphone is connected to active noise suicide circuit, and the anti-noise signal output part of active noise suicide circuit is connected with loud speaker through an amplifier; Described microphone, loud speaker, active noise suicide circuit and amplifier are installed on the welding helmet with welding mask, and wherein loud speaker is arranged on welding helmet inner side.Welding be also provided with on the helmet can receive welding arc light photo-sensitive cell, the photoreceptor signal output of photo-sensitive cell is connected to anti-noise unit and can controls the startup of anti-noise unit and stop.On the welding helmet, solar panels are also installed, solar panels are connected to the power supply output of anti-noise unit through photoelectric switching circuit, can provide power supply for anti-noise unit.
Claims (3)
1. an active antinoise welding helmet, includes and can receive the anti-noise unit that the microphone of noise, the loud speaker that can send anti-noise acoustic signals, active noise suicide circuit and amplifier form; The signal output part of described microphone is connected to active noise suicide circuit, and the anti-noise signal output part of active noise suicide circuit is connected with loud speaker through an amplifier; It is characterized in that: described microphone, loud speaker, active noise suicide circuit and amplifier are installed on the welding helmet with welding mask, wherein loud speaker is arranged on welding helmet inner side.
2. the active antinoise welding helmet according to claim 1, it is characterized in that: on the described welding helmet, be also provided with can receive welding arc light photo-sensitive cell, the photoreceptor signal output of photo-sensitive cell is connected to anti-noise unit can control the startup of anti-noise unit and stop.
3. the active antinoise welding helmet according to claim 1 and 2, is characterized in that: on the described welding helmet, solar panels are also installed, solar panels are connected to the power supply output of anti-noise unit through photoelectric switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420183117.3U CN203851280U (en) | 2014-04-16 | 2014-04-16 | Active anti-noise welding helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420183117.3U CN203851280U (en) | 2014-04-16 | 2014-04-16 | Active anti-noise welding helmet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203851280U true CN203851280U (en) | 2014-09-24 |
Family
ID=51564245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420183117.3U Expired - Fee Related CN203851280U (en) | 2014-04-16 | 2014-04-16 | Active anti-noise welding helmet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203851280U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017221A (en) * | 2016-06-02 | 2016-10-12 | 安瑞装甲材料（芜湖）科技有限公司 | Noise-reduction bulletproof helmet |
| CN107249371A (en) * | 2015-02-13 | 2017-10-13 | 哈曼贝克自动系统股份有限公司 | Active noise controlling for the helmet |
| CN111328451A (en) * | 2017-11-16 | 2020-06-23 | 德尔格制造股份两合公司 | Communication system, breathing mask and helmet |
| CN113260266A (en) * | 2018-11-06 | 2021-08-13 | 达尔噪音控制系统有限公司 | Active noise reduction system for helmet |
| CN113938798A (en) * | 2020-11-13 | 2022-01-14 | 谷歌有限责任公司 | Noise control system |
-
2014
- 2014-04-16 CN CN201420183117.3U patent/CN203851280U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107249371A (en) * | 2015-02-13 | 2017-10-13 | 哈曼贝克自动系统股份有限公司 | Active noise controlling for the helmet |
| US10796681B2 (en) | 2015-02-13 | 2020-10-06 | Harman Becker Automotive Systems Gmbh | Active noise control for a helmet |
| CN106017221A (en) * | 2016-06-02 | 2016-10-12 | 安瑞装甲材料（芜湖）科技有限公司 | Noise-reduction bulletproof helmet |
| CN111328451A (en) * | 2017-11-16 | 2020-06-23 | 德尔格制造股份两合公司 | Communication system, breathing mask and helmet |
| CN111328451B (en) * | 2017-11-16 | 2022-07-12 | 德尔格制造股份两合公司 | Communication system, breathing mask and helmet |
| US11463800B2 (en) | 2017-11-16 | 2022-10-04 | Drägerwerk AG & Co. KGaA | Gas mask and helmet with a communication system |
| CN113260266A (en) * | 2018-11-06 | 2021-08-13 | 达尔噪音控制系统有限公司 | Active noise reduction system for helmet |
| CN113938798A (en) * | 2020-11-13 | 2022-01-14 | 谷歌有限责任公司 | Noise control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20170416 |