CN104391163A - High-voltage automatic detection alarm insulating boot - Google Patents
High-voltage automatic detection alarm insulating boot Download PDFInfo
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- CN104391163A CN104391163A CN201410482762.XA CN201410482762A CN104391163A CN 104391163 A CN104391163 A CN 104391163A CN 201410482762 A CN201410482762 A CN 201410482762A CN 104391163 A CN104391163 A CN 104391163A
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- insulating boot
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- negative pole
- alarm
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Abstract
The invention discloses a high-voltage automatic detection alarm insulating boot, and belongs to an electrician high-voltage insulating boot with a high-voltage automatic alarm function. A detection alarm employs a gate of a field effect transistor as a voltage detection probe. An integrated operation amplifier LS741 controls output of high level, then a power amplifier is composed of composite triodes, and a subsequent alarm circuit is pushed. The detection alarm is arranged in a waterproof canvas bag, and the waterproof canvas bag is fixed to the bootleg of the high-voltage insulating boot via two adhesive tapes. According to the invention, the alarm is exquisite and small, and basically does not affect the beautifulness and functions of the insulating boot. In case of dangerous high-voltage existence in a field, an alarm sound is emitted to give a prompt to operation and maintenance personnel, such that the safety and reliability are improved, and personal casualty accidents are reduced.
Description
Technical field
The present invention relates to the high-voltage insulating boots that electrical safety protective articles, particularly electrician wore, had auto-alarm function.
Background technology
In generating plant, transformer station, conventional electrical operation is patrolled and examined and grid switching operation, overhaul of the equipments etc., all will put on insulating boot.Existing insulating boot punctures over the ground preventing high voltage, and protection worker safety serves very big effect.But not enough, because existing insulating boot is a kind of passive power-off isolation, to whether dangerous electricity exists, cannot measure reaction, namely potential danger still exists.
Summary of the invention
The object of this invention is to provide a kind of high voltage automatic detection alarm insulating boot had dangerous high voltage auto-alarm function.
The object of the present invention is achieved like this: a kind of high voltage automatic detection alarm insulating boot, comprise insulating boot, there is detecting alarm: the grid G of field effect transistor BG1 is drawn as probe, button cell Ec negative pole is connected to after the source S series resistor R2 of field effect transistor BG1, the inverting input of integrated operational amplifier LS741 is connected to after the drain D series resistor R3 of field effect transistor BG1, resistance R4 is serially connected between the in-phase input end of integrated operational amplifier LS741 and button cell Ec negative pole, the drain D of field effect transistor BG1 is also connected to button cell Ec positive pole after series resistor R1 and K switch 1 in turn, diode D1 negative pole is connected to field effect transistor BG1 grid G, diode D1 positive pole is connected to button cell negative pole, between the inverting input that resistance R5 is connected to integrated operational amplifier LS741 and output terminal, 7 pin of integrated operational amplifier are connected to the node of resistance R1 and K switch 1, 4 pin of integrated operational amplifier are connected to button cell Ec negative pole, the output terminal of integrated operational amplifier is connected to potentiometer W1 one end, potentiometer W1 sliding end is connected to the base stage of compound transistor BG2, the other end and the compound triode BG3 emitter of potentiometer W1 are all connected to button cell Ec negative pole, compound transistor BG2, BG3 collector is series resistor R6 in turn, the node of resistance R1 and K switch 1 is connected to after piezoelectric ceramic piece HTD, above-mentioned detecting alarm loads in Tarpauling bag, and the two piece adhesive tapes of Tarpauling bag on it are fixed on the leg of a boot of described insulating boot.
Also have light emitting diode Fg1, light emitting diode Fg1 negative pole is connected to the node of resistance R6 and piezoelectric ceramic piece HTD, and light emitting diode Fg1 positive pole is connected to the node of resistance R1 and K switch 1.
Also have music-integrating block JC2, music-integrating block JC2 and described piezoelectric ceramic piece HTD is in parallel.
Above-mentioned resistance R3 is 10K Ω, and resistance R5 is 680K Ω, and described field effect transistor BG1 model is 3DJ7F.
The invention has the beneficial effects as follows:
As long as 1 on-the-spot dangerous high voltage (referring to electric pressure human body being caused to electric shock, i.e. the alternating voltage of more than 36V) exists, detecting alarm will send chimes of doom, gives on-the-spot tour, operation, maintenance personal with warning function.Improve security performance, reduce the generation of pernicious electric shock accidents.
2, this alarm selects small-sized prototype part and button cell to form, so, not only with low cost, but also exquisite small and exquisite, substantially do not affect insulating boot attractive in appearance with self function.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of detecting alarm.
Fig. 2 is the schematic diagram of Tarpauling bag.
Fig. 3 is the detecting alarm of loading Tarpauling bag is fixed on insulating boot schematic diagram through adhesive tape.
Embodiment
Fig. 1 illustrates that detecting alarm consists of: the grid G of field effect transistor BG1 is drawn as probe, button cell Ec negative pole is connected to after the source S series resistor R2 of field effect transistor BG1, the inverting input of integrated operational amplifier LS741 is connected to after the drain D series resistor R3 of field effect transistor BG1, resistance R4 is serially connected between the in-phase input end of integrated operational amplifier LS741 and button cell Ec negative pole, the drain D of field effect transistor BG1 is also connected to button cell Ec positive pole after series resistor R1 and K switch 1 in turn, diode D1 negative pole is connected to field effect transistor BG1 grid G, diode D1 positive pole is connected to button cell negative pole, between the inverting input that resistance R5 is connected to integrated operational amplifier LS741 and output terminal, 7 pin of integrated operational amplifier are connected to the node of resistance R1 and K switch 1, 4 pin of integrated operational amplifier are connected to button cell Ec negative pole, the output terminal of integrated operational amplifier is connected to potentiometer W1 one end, potentiometer W1 sliding end is connected to the base stage of compound transistor BG2, the other end and the compound triode BG3 emitter of potentiometer W1 are all connected to button cell Ec negative pole, compound transistor BG2, BG3 collector is series resistor R6 in turn, the node of resistance R1 and K switch 1 is connected to after piezoelectric ceramic piece HTD,
Light emitting diode Fg1 negative pole is connected to the node of resistance R6 and piezoelectric ceramic piece HTD, and light emitting diode Fg1 positive pole is connected to the node of resistance R1 and K switch 1.Also have music-integrating block JC2, music-integrating block JC2 and described piezoelectric ceramic piece HTD is in parallel.
Above-mentioned detecting alarm loads in Tarpauling bag 4, and the two piece adhesive tapes of Tarpauling bag 4 on it are fixed on the leg of a boot of described insulating boot.
In FIG, what we selected is that input resistance is large, and field effect transistor (3DJ7F) BG1 of highly sensitive MOS formula structure is as sampling thief, and the drain D of BG1 and source S connect resistance R1 and R2 respectively, to determine working point.Grid G is drawn, and as signal probe, in alternating electric field, can be responded to, namely collect electric signal. and the signal collected makes field effect transistor BG1 conducting, produces drain current, through resistance R1 step-down, obtains low level at resistance R3 branch road.This low level sends the inverting input of integrated transporting discharging IC1 to, and IC1 overturns, and exports high level at 6 pin.The sampling of Here it is this detection instrument, judge principle.
Integrated operational amplifier circuit IC1(LS741 type in the middle part of Fig. 1), except making comparisons and judging, we are also designed to activated amplifier, this is because the electric signal sensed is very weak, cannot promote warning circuit below, so do this process.
For improving input signal amount, therefore resistance R3 being taken as 10K Ω, feedback resistance R5 is taken as 680K Ω, therefore enlargement factor being simultaneously:
A=R5/R3=680÷10=68；
Visible, by integrated transporting discharging and parameter configuration, nearly 70 times by signal boost, therefore the signal of the only millivolt level that fet gate is sensed, also can be amplified to hundreds of millivolt, be enough to promote subsequent conditioning circuit work.
Through the upset of IC1, export high level from 6 pin, regulate dividing potential drop through potentiometer W1, promote compound transistor BG2, BG3 conducting in compound power amplifier.After compound transistor BG2, BG3 conducting, through resistance in series R6 dividing potential drop, when upper end obtains 3V voltage, luminotron diode Fg1 is lit, music integrated block IC 2 conducts electricity, piezoelectric ceramic piece HTD is driven to sound a buzzer sound, represent that there is alternate electrical signal at this place, namely have that Keep Clear-High Voltage and exist, remind field personnel's analyzing and processing thus, adopt an effective measure, especially as high-voltage board goes to the wrong way interval, then must quit work, again make after checking certification, can recover and carry out expectation work, prevent the generation of serious accident thus.
Potentiometer W1 in circuit plays Signal Regulation distributional effects, in adjustment, can by residing be that the safe distance of the different electric pressure of 10 ~ 500kV expands 10 ~ 20% and sends sound and light signal, make it to report to the police in advance; In addition, after integrated transporting discharging, just design this regulator, instead of before being placed on, reason is that preceding signal is extremely weak, does not regulate, two is the amplifications having obtained decades of times above at this place, has had abundant nargin, has both reached the possibility of adjustment, can ensure effective work again.
Because this instrument is the work of insulating boot movable type, therefore should not alternating current be adopted, also should not adopt large battery, so we devise button cell working method, if right side Ec, Ec in Fig. 1 are 4 4.8V button cells altogether, to ensure needed for the operating voltage such as integrated package.Meanwhile, have employed slide fastener and pick and place mode, be convenient to again change.
In figure, diode D1 oppositely connects, and be because BG1 probe wire collects is alternating signal, and the positive half-wave of alternating signal is required for complex pipe work, can not cut down, D1 oppositely connects thus, just in time stops that positive half-wave passes through; At negative half-wave, backward dioded D1 conducting, guides negative half-wave voltage signal into power cathode, and like this, the power supply in collected electric signal and operating circuit is formed publicly just, makes it to reach the effect combined together, therefore can the work of normal table.
After circuit board loads cloth bag, just can be assembled with in the appropriate location of insulating boot, ask for an interview Fig. 3.
Fig. 3 is the general assembly drawing together with monitor is put with insulating boot, and after circuit board loads canvas bag, a kind of method is: first glued by the adhesive tape loaded on bag, insert insulating boot leg of a boot root, waits for that staff wears boots and uses; Second method is: staff's legs and feet first wear personnel's insulating boot, then in position put canvas bag, then the adhesive tape that bondd, and also completes same assembling.Two kinds of methods are all right, comparatively flexibly.
According to Fig. 1 circuit, we can merge part assembling by designing printed circuit board, are then always contained in 4 li, a Tarpauling bag, as shown in Figure 2.
Fig. 2 illustrates, the components and parts 1 such as field effect transistor, potentiometer, gauge tap and button cell are installed on circuit boards, after installing, through simply debugging, get final product work.In the canvas bag that the paulin that the circuit board debugged loads otherwise designed makes.Canvas bag size and circuit board closely cooperate, and size is each limit of 22 × 32 × 12mm(1mm more bigger than circuit board).
In canvas bag, 2 is pull heads, and 3 is slide fasteners, and this slide fastener adopts nylon formula, does not increase any conduction factor, except loading circuit plate, is also convenient to pull open chain mouth, i.e. replaceable battery etc.5 is adhesive tapes.
For display adhesive tape connected mode, we will load cloth bag inwardly in figure 3, the drafting that drawstring outwards does, and because of the flexible effect that drawstring is bonding in practical application, can put 360 ° of optional positions, unrestricted.
Dress detecting device and insulating boot, scene can to have been carried out and patrols and examines and related work.
This patent is at detection circuit and load on the basis of canvas bag design, complete circuit board to install, debug, assemble, and under the loading of canvas bag, coordinate with insulating boot, form overall use, can the power of conscious monitoring electromagnetic field at work, and add potentiometer regulatory function, to adapt to the different electric pressure of 10 ~ 500kV, usable range is significantly widened.After regulating, when induction exceedes permissible value, namely send sound and light alarm signal, mention related personnel and note, even stop doing business inspection, ascertaining the reason, and after fixing a breakdown, then resume work, avoid the generation of life casualty accident thus, increase substantially safety coefficient.
Claims (4)
1. a high voltage automatic detection alarm insulating boot, comprise insulating boot, it is characterized in that, there is detecting alarm: the grid G of field effect transistor BG1 is drawn as probe, button cell Ec negative pole is connected to after the source S series resistor R2 of field effect transistor BG1, the inverting input of integrated operational amplifier LS741 is connected to after the drain D series resistor R3 of field effect transistor BG1, resistance R4 is serially connected between the in-phase input end of integrated operational amplifier LS741 and button cell Ec negative pole, the drain D of field effect transistor BG1 is also connected to button cell Ec positive pole after series resistor R1 and K switch 1 in turn, diode D1 negative pole is connected to field effect transistor BG1 grid G, diode D1 positive pole is connected to button cell negative pole, between the inverting input that resistance R5 is connected to integrated operational amplifier LS741 and output terminal, 7 pin of integrated operational amplifier are connected to the node of resistance R1 and K switch 1, 4 pin of integrated operational amplifier are connected to button cell Ec negative pole, the output terminal of integrated operational amplifier is connected to potentiometer W1 one end, potentiometer W1 sliding end is connected to the base stage of compound transistor BG2, the other end and the compound triode BG3 emitter of potentiometer W1 are all connected to button cell Ec negative pole, compound transistor BG2, BG3 collector is series resistor R6 in turn, the node of resistance R1 and K switch 1 is connected to after piezoelectric ceramic piece HTD,
Above-mentioned detecting alarm loads in Tarpauling bag (4), and the two piece adhesive tapes of Tarpauling bag (4) on it are fixed on the leg of a boot of described insulating boot.
2. high voltage automatic detection alarm insulating boot according to claim 1, it is characterized in that, also have light emitting diode Fg1, light emitting diode Fg1 negative pole is connected to the node of resistance R6 and piezoelectric ceramic piece HTD, and light emitting diode Fg1 positive pole is connected to the node of resistance R1 and K switch 1.
3. high voltage automatic detection alarm insulating boot according to claim 1 and 2, is characterized in that also having music-integrating block JC2, and music-integrating block JC2 and described piezoelectric ceramic piece HTD is in parallel.
4. high voltage automatic detection alarm insulating boot according to claim 3, is characterized in that, described resistance R3 is 10K Ω, and resistance R5 is 680K Ω, and described field effect transistor BG1 model is 3DJ7F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410482762.XA CN104391163A (en) | 2014-09-19 | 2014-09-19 | High-voltage automatic detection alarm insulating boot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410482762.XA CN104391163A (en) | 2014-09-19 | 2014-09-19 | High-voltage automatic detection alarm insulating boot |
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| CN104391163A true CN104391163A (en) | 2015-03-04 |
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| CN201410482762.XA Pending CN104391163A (en) | 2014-09-19 | 2014-09-19 | High-voltage automatic detection alarm insulating boot |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033723A (en) * | 2012-12-03 | 2013-04-10 | 四川省电力公司内江电业局 | Movable cable fault tracing device |
| CN103675594A (en) * | 2013-12-07 | 2014-03-26 | 国家电网公司 | Fault detection instrument of power source circuit |
| CN203676259U (en) * | 2013-11-28 | 2014-07-02 | 国家电网公司 | Electric shock illumination warning insulation boot |
| CN204116440U (en) * | 2014-09-19 | 2015-01-21 | 国家电网公司 | High voltage automatic detection alarm insulating boot |
-
2014
- 2014-09-19 CN CN201410482762.XA patent/CN104391163A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033723A (en) * | 2012-12-03 | 2013-04-10 | 四川省电力公司内江电业局 | Movable cable fault tracing device |
| CN203676259U (en) * | 2013-11-28 | 2014-07-02 | 国家电网公司 | Electric shock illumination warning insulation boot |
| CN103675594A (en) * | 2013-12-07 | 2014-03-26 | 国家电网公司 | Fault detection instrument of power source circuit |
| CN204116440U (en) * | 2014-09-19 | 2015-01-21 | 国家电网公司 | High voltage automatic detection alarm insulating boot |
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Application publication date: 20150304 |