CN2037071U

CN2037071U - Contactless type electric tester with audio and vidio alarm

Info

Publication number: CN2037071U
Application number: CN 88219622
Authority: CN
Inventors: 邓基顺
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-05-20
Filing date: 1988-05-20
Publication date: 1989-05-03

Abstract

The utility model relates to a contactless type electric tester with acoustic-optic alarm, which belongs to the field of an electric tester. The utility model is composed of a sensor, a trigger, an oscillator and an acoustic-optic alarm. Compared with an electroscope, the utility model has the advantages that the electric testing range is large from 220 volts to hundreds of thousands of volts; the electric tester does not contact an electrified body directly, can test current with the distance of 5mm to 350mm from the electrified body, can be used in darkness and can be used easily by taking in hand or being arranged on safety caps of electricians or fire fighters. Human bodies are prevented from contacting electrified bodies efficiently, and the electroshock accident occurring on the occasion of high voltage or electrical leakage can also be avoided. The utility model can be loved by electricians, fire fighters, society and families.

Description

Contactless type electric tester with audio and vidio alarm

A kind of contactless sound and light alarm electricity measurer belongs to the electricity measurer field.

At present, at the electricity measurer that the electricity consumption occasion is used, mainly be test pencil, though test pencil can be measured electric leakage, must contact with electrified body, these personnel that give in high pressure occasion, dim occasion work bring very big inconvenience, easily cause the accident of human electric shock, and survey electric scope and be subjected to certain limitation.

In order to solve the shortcoming that above-mentioned test pencil exists, the utility model provides a kind of contactless sound and light alarm electricity measurer, can in distance electrified body 5-3500mm, measure the orientation and the voltage of electrified body, sound, light are reported to the police simultaneously, avoid the person to be directly adjacent to electrified body, caused accident of human electric shock's generation because of high pressure.

Electricity measurer of the present utility model is to adopt following proposal to realize, by sensor, the trigger that its input end links to each other with the sensor output terminal, the oscillator that its input end links to each other with the trigger output terminal, the light crossing-signal that its input end links to each other with oscillator output end, with and the acoustic alarm device that links to each other with oscillator output end of input end form.

Electricity measurer of the present utility model, its sensor is that electric signal sensor is better, can adopt induction antenna or induction electrode, trigger, oscillator can adopt 555 time base circuits, trigger, the oscillator that also can adopt discrete component to form, but use 555 time base circuits better, the acoustic alarm device can adopt piezoelectric buzzer or loudspeaker.

Principle of work is as follows: induction antenna receives signal, enter trigger, reach when triggering desired signal voltage, the trigger counter-rotating triggers, simultaneously through internal switch pipe and external capacitive C, switching tube BG, when the signal that receives was higher than the trigger point signal, circuit just triggered vibration, formation sound, light are reported to the police, when being lower than the trigger point signal, the circuit failure of oscillation, light, acoustic alarm stop.

Fig. 1 is a most preferred embodiment of the present utility model.Below in conjunction with Fig. 1 electricity measurer of the present utility model is described in detail.

It among the embodiment the of the present utility model contactless sound and light alarm electricity measurer that adopts 555 time base circuits to form, concrete connected mode is as follows among the figure: (8) pin serial connection K switch of 555 time base circuits, + 9-12V voltage is imported from (8) pin, (8) pin and (7) pin span sending and receiving light pipe LED, (7) pin links to each other with (4) pin, (6) pin connects induction antenna, (1) cross-over connection one capacitor C between pin and (2) pin, the base stage of triode BG links to each other with (5) pin, collector links to each other with the anode of capacitor C, and emitter is attempted by on (5) pin by piezoelectric buzzer HTD.

As shown in Figure 1, capacitor C adopts 4.7 μ F/16V, and BG adopts 3DG202 type triode, assembles contactless sound, the light warning electricity measurer of a playscript with stage directions utility model by line connection, and result of use is best.The K that closes a switch, energized, with this electricity measurer hand held in or be installed on the safety helmet, when near electric field 5-3500mm, electricity measurer gets final product sound, light is reported to the police simultaneously, and it is vigilant that the staff has been improved, know and closely go into electric field region, avoided the generation of electric shock accidents.

If the trigger, the oscillator that adopt induction electrode and discrete component to form, acoustic alarm device adopt loudspeaker to produce electricity measurer of the present utility model, result of use is the same, and just complex circuit a bit.

Advantage of the present utility model: compare with test pencil and to have following advantage:

(1) owing to adopt sensor to receive the signal of telecommunication, need not directly to contact with electrical body to survey electricity;

(2) the electric scope of survey is big, 220-hundreds of thousands volt;

(3) with tested electrical body distance 5-3500mm, decide on electric field strong and weak;

(4) also can measure the orientation and the voltage of electrified body in dark occasion;

(5) in can be directly hand held or be installed on electrician or fire fighter's the safety helmet and survey;

(6) volume is little, in light weight, aesthetic in appearance, easy to use, portable, and complete machine has only the matchbox size.

Claims

1, a kind of electricity measurer of being made up of display is characterized in that: the trigger that links to each other with the sensor output terminal by sensor, its input end, the oscillator that its input end links to each other with the trigger output terminal, light crossing-signal that its input end links to each other with oscillator output end with and the contactless sound and light alarm electricity measurer formed of the acoustic alarm that links to each other with oscillator output end of input end.

2, according to the described contactless sound and light alarm electricity measurer of claim 1, it is characterized in that: be to import from (8) pin by VCC end (8) pin tandem tap K:+9-12V voltage of 555 time base circuits, 555 time base circuits, (8) pin and (7) pin span sending and receiving light pipe LED, (7) pin links to each other with (4) pin, (6) pin connects induction antenna, (1) cross-over connection one capacitor C between pin and (2) pin, the base stage of triode BG links to each other with (5) pin, collector links to each other with the anode of capacitor C, and emitter is attempted by on (5) pin by piezoelectric buzzer HTD.

3, it is characterized in that according to claim 1,2 described contactless sound and light alarm electricity measurers sensor can also adopt induction electrode etc., trigger and oscillator that trigger and oscillator can adopt discrete component to form, the acoustic alarm device can adopt loudspeaker.