CN205125197U - Safety helmet protection against electric shock circuit - Google Patents
Safety helmet protection against electric shock circuit Download PDFInfo
- Publication number
- CN205125197U CN205125197U CN201520833389.8U CN201520833389U CN205125197U CN 205125197 U CN205125197 U CN 205125197U CN 201520833389 U CN201520833389 U CN 201520833389U CN 205125197 U CN205125197 U CN 205125197U
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- triode
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- protection against
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Abstract
The utility model discloses a safety helmet protection against electric shock circuit, including electrode slice A, field effect transistor VT4, triode VT1, buzzer BL, chip U1, storage battery E, switch S summation potential ware RP1, electrode slice A connects field effect transistor VT4's the G utmost point, field effect transistor VT4's S utmost point connecting resistance R1, electric capacity C1 is connected respectively to the resistance R1 other end, electric capacity C2, chip U1 pin 3, chip U1 pin 5, triode VT3 projecting pole, storage battery E negative pole and solar panel, it is anodal that diode D1 is connected to the solar panel other end. The utility model discloses safety helmet protection against electric shock circuit can install on the safety helmet, is close to the forceful electric power and can sends warning sound promptly, and circuit structure is simple, and is with low costs, and the circuit is furnished with solar panel, charges for battery E, and this circuit resistance element is few, and the consumption is extremely low, and join in marriage a solar panel and charge, the battery that does not basically need to be changed, especially adapted staff sending transformer work uses.
Description
Technical field
The utility model relates to a kind of protection against electric shock circuit, specifically a kind of safety cap protection against electric shock circuit.
Background technology
The daily work of electric power overhaul staff is all need to come into contacts with various electric power, and danger is very high, once there is carelessness, just likely serious accident occurs, and present safety measure is mostly on insulating protection, seldom has alarm device.
Utility model content
The purpose of this utility model is to provide a kind of safety cap protection against electric shock circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of safety cap protection against electric shock circuit, comprises electrode slice A, FET VT4, triode VT1, buzzer BL, chip U1, batteries E, switch S and potentiometer RP1, described electrode slice A connects the G pole of FET VT4, the S pole contact resistance R1 of FET VT4, and the resistance R1 other end connects electric capacity C1 respectively, electric capacity C2, chip U1 pin 3, chip U1 pin 5, triode VT3 emitter stage, batteries E negative pole and solar panels, the solar panels other end connects diode D1 positive pole, and diode D1 negative pole connects potentiometer RP1 one end respectively, potentiometer RP1 slide plate, triode VT1 colelctor electrode, buzzer BL and switch S, the switch S other end connects battery E positive pole, the buzzer BL other end is connecting triode VT2 colelctor electrode and triode VT3 colelctor electrode respectively, triode VT2 base stage connects chip U1 pin 2, triode VT2 emitter stage connects triode VT3 base stage, and chip U1 pin 1 connects chip U1 pin 4 respectively, the electric capacity C2 other end, the electric capacity C1 other end and triode VT1 emitter stage, triode VT1 base stage connects the D pole of the potentiometer RP1 other end and FET VT4 respectively, and described chip U1 adopts BA08.
As further program of the utility model: described FET VT4 adopts technotron.
As the utility model further scheme: described batteries E rated voltage is 6V.
Compared with prior art, the beneficial effects of the utility model are: the utility model safety cap protection against electric shock circuit can be installed on safety cap, and namely can send alarming sound near forceful electric power, circuit structure is simple, cost is low, circuit is furnished with solar panels, and can charge by accumulators E, this circuitous resistance element is few, power consumption is extremely low, join a solar panel charging, substantially do not need to change battery, be highly suitable for and send the employee of power transformation work to use.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of safety cap protection against electric shock circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of safety cap protection against electric shock circuit, comprises electrode slice A, FET VT4, triode VT1, buzzer BL, chip U1, batteries E, switch S and potentiometer RP1, electrode slice A connects the G pole of FET VT4, the S pole contact resistance R1 of FET VT4, and the resistance R1 other end connects electric capacity C1 respectively, electric capacity C2, chip U1 pin 3, chip U1 pin 5, triode VT3 emitter stage, batteries E negative pole and solar panels, the solar panels other end connects diode D1 positive pole, and diode D1 negative pole connects potentiometer RP1 one end respectively, potentiometer RP1 slide plate, triode VT1 colelctor electrode, buzzer BL and switch S, the switch S other end connects battery E positive pole, the buzzer BL other end is connecting triode VT2 colelctor electrode and triode VT3 colelctor electrode respectively, triode VT2 base stage connects chip U1 pin 2, triode VT2 emitter stage connects triode VT3 base stage, and chip U1 pin 1 connects chip U1 pin 4 respectively, the electric capacity C2 other end, the electric capacity C1 other end and triode VT1 emitter stage, triode VT1 base stage connects the D pole of the potentiometer RP1 other end and FET VT4 respectively, and described chip U1 adopts BA08.
FET VT4 adopts technotron.
Batteries E rated voltage is 6V.
Operation principle of the present utility model is: refer to Fig. 1, and the utility model is made up of induced voltage signal amplifying circuit, speech synthesizer and audio amplification output circuit.
Induced voltage signal amplifying circuit is made up of induced electricity pole piece A, junction field effect transistor VT4, transistor VT1, potentiometer RP1, resistance R1 and electric capacity C1; Speech synthesizer is made up of chip U1 and electric capacity C2; Audio amplification output circuit is made up of transistor VT2, VT3 and loudspeaker BL.
Switch on power switch S, and safety helmet with alarm enters the state of alert, when induced electricity pole piece A does not sense electric field signal or the electric field signal sensed is more weak, resistance value between VT4 drain electrode and source electrode is very little, VT2 is cut off because base stage is low level, and U1 does not work, and BL is sounding not.
When the electric field signal that induced electricity pole piece A responds to is stronger, between the drain electrode of VT4, source electrode, resistance value increases, VT2 is switched on because base voltage rises, U1 is energized work, export voice telecommunication number, this signal of telecommunication, after VT2, VT3 amplify, drives BL to send prompting sound, remind operating personnel that it has forceful electric power for circuit that is close or maintenance, should prevent from getting an electric shock.In addition, circuit is furnished with solar panels, and can charge by accumulators E, this circuitous resistance element is few, and power consumption is extremely low, joins a solar panel charging, does not substantially need to change battery, is highly suitable for and send the employee of power transformation work to use.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. a safety cap protection against electric shock circuit, comprises electrode slice A, FET VT4, triode VT1, buzzer BL, chip U1, batteries E, switch S and potentiometer RP1, is characterized in that, described electrode slice A connects the G pole of FET VT4, the S pole contact resistance R1 of FET VT4, and the resistance R1 other end connects electric capacity C1 respectively, electric capacity C2, chip U1 pin 3, chip U1 pin 5, triode VT3 emitter stage, batteries E negative pole and solar panels, the solar panels other end connects diode D1 positive pole, and diode D1 negative pole connects potentiometer RP1 one end respectively, potentiometer RP1 slide plate, triode VT1 colelctor electrode, buzzer BL and switch S, the switch S other end connects battery E positive pole, the buzzer BL other end is connecting triode VT2 colelctor electrode and triode VT3 colelctor electrode respectively, triode VT2 base stage connects chip U1 pin 2, triode VT2 emitter stage connects triode VT3 base stage, and chip U1 pin 1 connects chip U1 pin 4 respectively, the electric capacity C2 other end, the electric capacity C1 other end and triode VT1 emitter stage, triode VT1 base stage connects the D pole of the potentiometer RP1 other end and FET VT4 respectively, and described chip U1 adopts BA08.
2. safety cap protection against electric shock circuit according to claim 1, is characterized in that, described FET VT4 adopts technotron.
3. safety cap protection against electric shock circuit according to claim 1, is characterized in that, described batteries E rated voltage is 6V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520833389.8U CN205125197U (en) | 2015-10-26 | 2015-10-26 | Safety helmet protection against electric shock circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520833389.8U CN205125197U (en) | 2015-10-26 | 2015-10-26 | Safety helmet protection against electric shock circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205125197U true CN205125197U (en) | 2016-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520833389.8U Expired - Fee Related CN205125197U (en) | 2015-10-26 | 2015-10-26 | Safety helmet protection against electric shock circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205125197U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105639817A (en) * | 2016-03-29 | 2016-06-08 | 南通市天源安全设备有限公司 | Electric shock preventing early-warning safety helmet |
| CN109907418A (en) * | 2019-03-29 | 2019-06-21 | 广东电网有限责任公司 | Safety cap with alarm function |
-
2015
- 2015-10-26 CN CN201520833389.8U patent/CN205125197U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105639817A (en) * | 2016-03-29 | 2016-06-08 | 南通市天源安全设备有限公司 | Electric shock preventing early-warning safety helmet |
| CN109907418A (en) * | 2019-03-29 | 2019-06-21 | 广东电网有限责任公司 | Safety cap with alarm function |
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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: 20160406 Termination date: 20161026 |