CN203786215U - Safety helmet-used passive near electricity alarm - Google Patents
Safety helmet-used passive near electricity alarm Download PDFInfo
- Publication number
- CN203786215U CN203786215U CN201420190783.XU CN201420190783U CN203786215U CN 203786215 U CN203786215 U CN 203786215U CN 201420190783 U CN201420190783 U CN 201420190783U CN 203786215 U CN203786215 U CN 203786215U
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- Prior art keywords
- safety helmet
- positive
- resistance
- circuit board
- stabilivolt
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- 230000005611 electricity Effects 0.000 title claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000006698 induction Effects 0.000 claims description 27
- 239000003990 capacitor Substances 0.000 abstract description 10
- 239000002390 adhesive tape Substances 0.000 abstract description 4
- 230000005684 electric field Effects 0.000 abstract description 2
- 238000004870 electrical engineering Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000010248 power generation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model relates to a safety helmet-used passive near electricity alarm and belongs to the technical field of electrical engineering safety helmet alarming devices. The safety helmet-used passive near electricity alarm comprises a safety helmet body, a circuit board, a first sensing electrode K1 and a second sensing electrode K2, and is characterized in that the circuit board, the first sensing electrode K1 and the second sensing electrode K2 are arranged on the safety helmet body; the K1 and the K2 are respectively arranged at the inner side and the outer side of the safety helmet body; and the circuit board is provided with a bridge rectifier, a transistor driving circuit, piezoelectric ceramics, a capacitor and the like. Neither a battery nor a button is needed, an alarming state is started automatically through sensing the electrical field as long as a wearer is near a high-voltage electrified area, maintenance is not needed, the service life is long, and alarming is accurate and timely. Pasting is carried out through a double-faced adhesive tape, mounting is convenient, the alarm is waterproof and moistureproof, and the use is safe and reliable; and hand power generation can be carried out after a detection plug of a manual detector and a detection jack are inserted, and whether the working state of the safety helmet-used passive near electricity alarm is good can be conveniently detected.
Description
Technical field
The utility model relates to a kind of passive alarm for nearing electrisity used for safety helmet, belongs to electrical engineering safety helmet warning device technical field.
Background technology
The staff who installs, safeguards, overhauls in places such as transformer station, power transmission and transformation line, electric railway, mine, city trolley bus, subways, must wear the safety helmet being made by insulating material.But these safety helmets can only protect head electric shock and falling object from high altitude shock head, mostly equipped Antistatic alarm.The active safety helmet with alarm using at present, owing to relying on powered battery, there is loose contact, battery self-discharge, voltage fluctuation phenomenon, easily cause false alarm or simply do not report to the police, do not have warning function crucial moment, be difficult to avoid wearer to be strayed into high-voltage region electric shock security incident occurs.
Summary of the invention
The purpose of this utility model is, provides a kind of simple in structure, with low cost, gets final product work without battery, reports to the police reliable in time; Solving existing active safety helmet there is self-discharge of battery, voltage fluctuation, causes false alarm or the used for safety helmet passive alarm for nearing electrisity of the problem of not reporting to the police.
The utility model is to realize by the following technical solutions above-mentioned purpose
This passive alarm for nearing electrisity used for safety helmet is made up of safety helmet body, circuit board, the first induction electrode K1, the second induction electrode K2, it is characterized in that: circuit board, the first induction electrode K1, the second induction electrode K2 are installed on safety helmet body; On circuit board, be provided with and detect jack, sounding chamber, bridge rectifier, transistor drive circuit, the first stabilivolt VD1, the second stabilivolt VD2, capacitor C, piezoelectric ceramics YD;
Connection A point and the first induction electrode K1 of the diode (D1, D2) of bridge rectifier join, connection B point and the second induction electrode K2 of diode (D3, D4) join, and the negative pole of diode (D1, D4) connects the be connected in parallel negative pole, capacitor C, detection jack, the resistance R 1 of transistor drive circuit, the emitter of positive-negative-positive triode BG1 of positive pole, the second stabilivolt VD2 of the first stabilivolt VD1 of C point; Negative pole, the positive pole of the second stabilivolt VD2, capacitor C, detection jack, the resistance R 3 of transistor drive circuit, piezoelectric ceramics YD that the positive pole of diode (D2, D3) connects C point and the first stabilivolt VD1 are connected in parallel;
Transistor drive circuit comprises positive-negative-positive triode BG1, NPN type triode BG2, resistance (R1, R2, R3); The be connected in parallel collector of resistance R 1, NPN type triode BG2 of the base stage of positive-negative-positive triode BG1; The base stage of the collector of positive-negative-positive triode BG1 and resistance R 2, NPN type triode BG2 is connected in parallel; The emitter of NPN type triode BG2 be connected in parallel resistance (R2, R3), piezoelectric ceramics YD; Manually detector comprises test plug, electricity generated manually handle, and manually detector is connected with the detection jack on circuit board by test plug.
The utility model beneficial effect is compared with prior art
This passive alarm for nearing electrisity used for safety helmet adopts the first induction electrode K1, the second induction electrode K2, circuit board etc., without battery, without button, as long as wearer can enter alarm condition by induction field automatically near electrification in high voltage region, non-maintaining, long service life, report to the police accurately and timely.Can be by sticking double faced adhesive tape on safety helmet body, easy for installation, waterproof, protection against the tide, safe and reliable.Detect jack and be connected with the test plug of manual detector, by manual detector hand power, whether the duty that can detect easily this passive alarm for nearing electrisity used for safety helmet is good.Solve the problem that existing active safety helmet exists self-discharge of battery, voltage fluctuation, causes false alarm or do not report to the police.Be adapted at installing and using on existing various types of safety helmet.
Brief description of the drawings
The one-piece construction schematic diagram that accompanying drawing 1 is a kind of passive alarm for nearing electrisity used for safety helmet;
The principle of work schematic diagram of the circuit board that accompanying drawing 2 is a kind of passive alarm for nearing electrisity used for safety helmet;
The principle of work block diagram that accompanying drawing 3 is a kind of passive alarm for nearing electrisity used for safety helmet;
The one-piece construction schematic diagram of the manual detector that accompanying drawing 4 is a kind of passive alarm for nearing electrisity used for safety helmet.
In figure: 1, circuit board, 2, detect jack, 3, sounding chamber, 4, bridge rectifier, 5, transistor drive circuit, 6, test plug, 7, electricity generated manually handle.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described in detail:
This passive alarm for nearing electrisity used for safety helmet is made up of safety helmet body, circuit board 1, the first induction electrode K1, the second induction electrode K2, it is characterized in that: circuit board 1, the first induction electrode K1, the second induction electrode K2 are installed on safety helmet body; On circuit board 1, be provided with and detect jack 2, sounding chamber 3, bridge rectifier 4, transistor drive circuit 5, the first stabilivolt VD1, the second stabilivolt VD2, capacitor C, piezoelectric ceramics YD;
Connection A point and the first induction electrode K1 of the diode (D1, D2) of bridge rectifier 4 join, connection B point and the second induction electrode K2 of diode (D3, D4) join, and the negative pole of diode (D1, D4) connects the be connected in parallel negative pole, capacitor C, detection jack 2, the resistance R 1 of transistor drive circuit 5, the emitter of positive-negative-positive triode BG1 of positive pole, the second stabilivolt VD2 of the first stabilivolt VD1 of C point; Negative pole, the positive pole of the second stabilivolt VD2, capacitor C, detection jack 2, the resistance R 3 of transistor drive circuit 5, piezoelectric ceramics YD that the positive pole of diode (D2, D3) connects C point and the first stabilivolt VD1 are connected in parallel;
Transistor drive circuit 5 comprises positive-negative-positive triode BG1, NPN type triode BG2, resistance (R1, R2, R3); The be connected in parallel collector of resistance R 1, NPN type triode BG2 of the base stage of positive-negative-positive triode BG1; The base stage of the collector of positive-negative-positive triode BG1 and resistance R 2, NPN type triode BG2 is connected in parallel; The emitter of NPN type triode BG2 be connected in parallel resistance (R2, R3), piezoelectric ceramics YD; Manually detector comprises test plug 6, electricity generated manually handle 7, and manually detector is connected with the detection jack 2 on circuit board 1 by test plug 6.(referring to accompanying drawing 1～4)
The principle of work of this passive alarm for nearing electrisity used for safety helmet is: under high-voltage electric field environment, produce induced charge principle by conductor, utilize the electric charge that induction electrode produces to form loop generation induction current, by diode rectifier bridge, exchange current being converted to positive polarity current signal charges to capacitor, drive piezoelectric ceramics vibration through the oscillating circuit of overdriving again, the larger alarm sound of sounding under the sound amplification in sounding chamber, remind staff to note approaching high-voltage charged body, thereby avoid staff to be strayed into high pressure zone point region or touch high-voltage charged body and cause personal safety accident.
The specific works process of this passive alarm for nearing electrisity used for safety helmet is as follows:
First the test plug of manual detector 6 is inserted in the detection jack 2 of circuit board 1 and connected, press electricity generated manually handle 7, now piezoelectric ceramics YD sends the sound by generation cavity 3, shows that this passive alarm for nearing electrisity used for safety helmet is working properly, the test plug 6 that can extract manual detector.On safety helmet body, pass through sticking double faced adhesive tape mounting circuit boards 1, the first induction electrode K1, the second induction electrode K2 are arranged on respectively to the inside and outside two sides of safety helmet body, because the specific inductive capacity of safety helmet material is large, can be equivalent to a large bulk capacitance, therefore can produce more induced charge.When operating personnel is during near electrification in high voltage object, the first induction electrode K1, the second induction electrode 2 can produce the field-generated current of 50Hz, by changing the current signal of positive polarity after bridge rectifier 4 rectifications into, charge to capacitor C.The first stabilivolt VD1 and the second stabilivolt VD2 shield, and prevent that reverse surge voltage from damaging device.The electric energy that transistor drive circuit 5 receives capacitor C produces concussion, drives piezoelectric ceramics YD vibration, under the effect in sounding chamber 3, sends alarm sound.More approaching with charged object, voltage is higher, alarm sound is stronger.
This passive alarm for nearing electrisity used for safety helmet can be arranged on existing various types of safety helmet and use, and has following advantages:
A, get final product work without battery, non-maintaining, the life-span is long, site test is reported to the police accurately and reliably.
B, there is no shift knob, can automatically enter duty as long as enter electrification in high voltage region, automatically quit work when leaving electrification in high voltage region.
C, adopt sticking double faced adhesive tape, easy for installation, and waterproof, protection against the tide.
D, be furnished with manual detector, detect by hand power, whether convenient to detect this passive alarm for nearing electrisity used for safety helmet good.
The above is the embodiment of this utility model, above-mentioned not illustrating is construed as limiting flesh and blood of the present utility model, person of an ordinary skill in the technical field is reading after this instructions and can above-mentioned embodiment made an amendment or is out of shape, and does not deviate from essence of the present utility model and scope.
Claims (1)
1. a passive alarm for nearing electrisity used for safety helmet, it is made up of safety helmet body, circuit board (1), the first induction electrode (K1), the second induction electrode (K2), it is characterized in that: circuit board (1), the first induction electrode (K1), the second induction electrode (K2) are installed on safety helmet body; On circuit board (1), be provided with and detect jack (2), sounding chamber (3), bridge rectifier (4), transistor drive circuit (5), the first stabilivolt (VD1), the second stabilivolt (VD2), electric capacity (C), piezoelectric ceramics (YD);
Connection A point and first induction electrode (K1) of the diode (D1, D2) of described bridge rectifier (4) join, connection B point and second induction electrode (K2) of diode (D3, D4) join, and the negative pole of diode (D1, D4) connects the be connected in parallel negative pole, electric capacity (C), detection jack (2), first resistance (R1) of transistor drive circuit (5), the emitter of positive-negative-positive triode (BG1) of positive pole, the second stabilivolt (VD2) of the first stabilivolt (VD1) of C point; Negative pole, the positive pole of the second stabilivolt (VD2), electric capacity (C), detection jack (2), the 3rd resistance (R3) of transistor drive circuit (5), piezoelectric ceramics (YD) that the positive pole of diode (D2, D3) connects C point and the first stabilivolt (VD1) are connected in parallel;
Described transistor drive circuit (5) comprises positive-negative-positive triode (BG1), NPN type triode (BG2), the first resistance (R1), the second resistance (R2), the 3rd resistance (R3); The be connected in parallel collector of the first resistance (R1), NPN type triode (BG2) of the base stage of positive-negative-positive triode (BG1); The base stage of the collector of positive-negative-positive triode (BG1) and the second resistance (R2), NPN type triode (BG2) is connected in parallel; The emitter of NPN type triode (BG2) be connected in parallel the second resistance (R2), the 3rd resistance (R3), piezoelectric ceramics (YD); Manually detector comprises test plug (6), electricity generated manually handle (7), and manually detector is connected with the detection jack (2) on circuit board (1) by test plug (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420190783.XU CN203786215U (en) | 2014-04-20 | 2014-04-20 | Safety helmet-used passive near electricity alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420190783.XU CN203786215U (en) | 2014-04-20 | 2014-04-20 | Safety helmet-used passive near electricity alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786215U true CN203786215U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420190783.XU Expired - Fee Related CN203786215U (en) | 2014-04-20 | 2014-04-20 | Safety helmet-used passive near electricity alarm |
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| Country | Link |
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| CN (1) | CN203786215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111338514A (en) * | 2020-02-09 | 2020-06-26 | 业成科技（成都）有限公司 | Capacitive indirect contact sensing system |
-
2014
- 2014-04-20 CN CN201420190783.XU patent/CN203786215U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111338514A (en) * | 2020-02-09 | 2020-06-26 | 业成科技（成都）有限公司 | Capacitive indirect contact sensing system |
| CN111338514B (en) * | 2020-02-09 | 2022-07-08 | 业成科技（成都）有限公司 | Capacitive indirect contact sensing system |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20200420 |
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| CF01 | Termination of patent right due to non-payment of annual fee |