CN201035093Y

CN201035093Y - Portable high-pressure electric shocking prevention detecting alarming device

Info

Publication number: CN201035093Y
Application number: CNU2007200175444U
Authority: CN
Inventors: 杨啸林
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-18
Filing date: 2007-01-18
Publication date: 2008-03-12
Anticipated expiration: 2017-01-18

Abstract

The utility model relates to an alarm device in particular to a portable high voltage anti electric shock detecting and alarming device, which is applicable to be used in the place of charged working, the alarm device warnings the workers entering the high voltage area via an audible and visual alarm to avoid occurring the danger of electric shock. The utility model comprises two or three mutually orthometric antennas which are made of inductive coils. The utility model emphatically solves the following three problems: 1. An independent portable device without any external hanging parts or connecting parts is provided, which is convenient for the field workers to carry or be embedded into the other equipment. 2. A high enough detection sensitivity is ensured, the detection blind area is avoided, thus enhancing the reliability. 3. The electric circuit is simplified, the power consumption is reduced, and the requirements of portable device are met.

Description

Portable high voltage electric shock-proof detection alarming device

(1) technical field

The utility model relates to a kind of warning device, particularly a kind of portable high voltage electric shock-proof detection alarming device.Be applicable to the place that needs charged work,, to avoid the danger of electric shock by the personnel that the sound and light alarm caution enters high-voltage region.

(2) background technology

The at present existing Detection Techniques that prevent that the person from getting an electric shock mainly contain following two kinds, and the first adopts the metering system that has the human body contact electrode, the intelligent test pencil related as patent CN2556653Y.As portable set, many occasions can't provide the human body contact electrode, thereby have limited the employing of this technology.

Its two, be induction-type high-voltage detection alarm device, the miniature anti-high pressure alarm related as patent CN2256537Y.This technology adopts telescopic antenna as sensor, and simultaneously, this design circuit is comparatively complicated, and higher to power requirement, the mancarried device that need wear with oneself for the working-yard also is not suitable for.

(3) summary of the invention

The utility model provides a kind of portable high voltage electric shock-proof detection alarming device that can be applicable to the charging construction scene in order to overcome the deficiency of above technology, technically the personnel that enter the hot line job scene is provided safeguard, the generation of the casualty accident of avoiding getting an electric shock.

The utility model is realized by following measure:

Portable high voltage electric shock-proof detection alarming device of the present utility model, its special feature is: include the mutually orthogonal antenna of being made by telefault of two or three.

Portable high voltage electric shock-proof detection alarming device of the present utility model, described telefault with after prime amplifier is connected, connect supercircuit respectively successively, amplify, filtering circuit comparer, trigger, circuit.

Portable high voltage electric shock-proof detection alarming device of the present utility model, described circuit is divided into acoustic alarm signal circuit and visual alarm circuit, the acoustic alarm signal circuit is made up of audio frequency oscillator and microphone device, and the visual alarm circuit is made up of LF oscillator and light display device.

The utility model is to adopt specially designed telefault as sensor, promptly need not external antenna, and do not need the human body contact electrode yet, thereby realize inductive measuring.Simultaneously,, should adopt three mutually orthogonal telefaults of its maximum induction direction, thereby guarantee sensitivity and the reliability surveyed for avoiding occurring the measurement dead band on some direction.The voltage signal that arrives by sensor, through amplification, after the shaping, with default alarm threshold value relatively after, form alerting signal, and report to the police by sound, light respectively and remind operating personnel to enter the electrification in high voltage zone.

The utility model has solved following three problems emphatically:

1. provide one independently, need not any external hanging member or the portable unit of coupling part so that the field personnel carries, or be embedded in other equipment.

2. guarantee sufficiently high detection sensitivity, avoid detection blind area, to improve its reliability.

3. the simplification circuit reduces power consumption, adapts to the requirement of mancarried device.

(4) description of drawings

Accompanying drawing 1 is the schematic diagram of the utility model embodiment 1

Accompanying drawing 2 is the schematic diagram of the utility model embodiment 2

Accompanying drawing 3 is a telefault structural representation of the present utility model

Among the figure:

1,2-telefault, 3, the 4-prime amplifier, the 5-supercircuit,

6-amplifies, filtering circuit, the 7-comparer, and the 8-trigger,

The 9-LF oscillator, the 10-audio frequency oscillator, the 11-light display device,

The 12-microphone device, the 13-yellow LED lamp, the 14-iron core,

The 15-coil rack, the 16-coil.

(5) embodiment

Embodiment 1:

Embodiment of the present utility model sees Fig. 1 and shown in Figure 3.

Adopt 2 have directive property constitute the antenna sets of orthogonal configuration by telefault 1 and telefault 2 antennas, thereby can omnibearing induction high-tension line or the electromagnetic field that forms at its surrounding space of high-tension apparatus.The antenna that is adopted is minimum to be that the antenna of two directive property mutually orthogonals constitutes one group, also can be made of the omnidirectional antenna combination three antennas of directive property mutually orthogonal, to guarantee higher sensitivity, to eliminate detection blind area.

The structure of telefault is made up of iron core 14, coil rack 15 and the coil 16 on coil rack of non-closure as shown in Figure 3.

Voltage signal through antenna induction, respectively through after independent prime amplifier 3 that is provided with and prime amplifier 4 amplify separately, process supercircuit 5 is with the two paths of signals addition, signal after the addition is adjusted through amplification, filtering circuit 6 again, remove undesired signal, and be amplified to the needed level of back level processing.

Signal after amplifying, handling, in comparer 7, compare with predefined alarm level, the signal of comparer 7 output forms control signal after trigger 8 shapings, respectively control audio oscillator 10 and LF oscillator 9 output, formation sound, visual alarm.

Audio frequency oscillator 10 is exported the relatively more responsive sound signal of people's ear under the control signal control of trigger output, match with microphone device 12, forms audible alarm jointly.

LF oscillator 9 is exported low frequency signal (such as the square wave of 1Hz) that a human eye can clearly identify, that change under the control signal control of trigger output, and driven for emitting lights device 11, forms the visible light alerting signal.

This embodiment can be used as an independently mancarried device, comes the personnel that supply and demand will work under charged environment to use, and also can be embedded in the relevant equipment and go as function parts independently.

Its principle of work is: respond to the alternating electromagnetic field that the power frequency electrified bodys form by telefault 1 and telefault 2 around it, two-way is responded to the voltage signal that obtains respectively as detectable signal, after prime amplifier 3 and prime amplifier 4 amplifications, enter supercircuit 5 stacks.Theoretically, the coil of three mutually orthogonals can constitute omnidirectional antenna, and through actual measurement, two coils can satisfy request for utilization, so adopted the telefault of two quadratures in the present embodiment.

Detectable signal through behind amplification, filtering circuit 6, comparer 7 and the trigger 8, is divided into two-way successively, and one the tunnel is that LF oscillator 9 and light display device 11, a tunnel are audio frequency oscillator 10 and microphone device 12.Detectable signal is removed undesired signal, and is amplified to the required signal level of back level processing.This level is compared with predefined alarm level in comparer, and the signal of comparer output forms control signal after the trigger shaping, respectively control audio oscillator and LF oscillator output, formation sound, visual alarm.

Embodiment 2

Embodiment of the present utility model sees Fig. 2 and shown in Figure 3.

In this embodiment, the flash of light warning lamp of the indication workmen position that industry working-yards such as high voltage electric shock-proof warning device and present railway is commonly used combines, when there is not High Level AC Voltage in the working-yard, the output of high pressure detection alarm part no signal, only be yellow LED lamp 13 (as 13 among Fig. 2) flicker, play the effect in indication workmen orientation; When there is High Level AC Voltage in the working-yard, high pressure detection alarm circuit output alarm signal, the alternately flicker of red led (as the light display device among Fig. 2 11) that the yellow LED lamp 13 of indicating the workmen position this moment and alarm for high voltage are used, the warning device alerting signal of sounding simultaneously, thereby remind the workmen, the danger of getting an electric shock takes place when avoiding working under the working environment that has high-tension line such as electric locomotive etc.

Other structure is substantially the same manner as Example 1.

Claims

1. portable high voltage electric shock-proof detection alarming device is characterized in that: include the mutually orthogonal antenna of being made by telefault of two or three maximum induction directions.

2. portable high voltage electric shock-proof detection alarming device according to claim 1 is characterized in that: described telefault with after prime amplifier is connected, connects supercircuit respectively successively, amplifies, filtering circuit comparer, trigger, circuit.

3. portable high voltage electric shock-proof detection alarming device according to claim 2, it is characterized in that: described circuit is divided into acoustic alarm signal circuit and visual alarm circuit, the acoustic alarm signal circuit is made up of audio frequency oscillator and microphone device, and the visual alarm circuit is made up of LF oscillator and light display device.