CN2165485Y - Automatic power safety production monitoring and warning plate - Google Patents

Abstract

The utility model relates to an automatic power safety production monitoring and warning plate which is composed of a pyroelectric infrared optical lens sensor and a warning circuit. The sensor can be installed on the receiving window of a face board, and a circuit board, a loudspeaker and a battery can be installed in a bottom casing. The utility model has the advantages of simple structure, few elements, easy fabrication, light body shape, low static electric consumption, high active warning sensitivity, clear voice, good sound, safety, no rejecting action, no error action for optical radiation except the thermal radiation to human body and wide range of application, and can surely prevent the personal accident generation in electric power production work, which benefit safety production.

Description

Automatic power safety production monitoring and warning plate

The utility model belongs to electric industry department prevents human casualty accident in production work nameplate.

Nameplate according to " electrical safe working order " regulation hangs has and " halts! Keep Clear-High Voltage! " " No switching on, the someone works! " etc. style, these only use the nameplate of printed words symbology, can not in time send the warning sound of calling people's attention, and are very passive, very dangerous, unreliable! In the work on the spot, personnel's energy is slightly concentrated, or nervous when flurried, ignores nameplate easily, crosses over mistakenly entering into charged district or false switching, and accident causes casualties.This accident that seriously jeopardizes personal safety becomes electric system leaders at different levels and professional and extremely has a headache insoluble problem.

The purpose of this utility model be to provide a kind of have human body is carried out automatic monitoring, active alarm prompting function, the electric power safety that guard entirely in Jian, alarm, letter symbol are denoted as one is produced automatic monitoring alarm nameplate.

The method that the utility model is finished is to adopt advanced human body remote sensing-Re to release infrared acquisition, human body is carried out automatic monitoring, when human body (wide-angle 120 degree before nameplate, apart from 0-10 rice) when mobile, sound will initiatively give a warning, initiatively wake field staff blindly up, avoid contingent at any time human casualty accident, really play anti-error shock and fool proof effect.These effects are to realize by the warning circuit that is made of infrared probe and language alarm two parts.The sensitive element of circuit is to adopt the heat of being made up of the hot coefficient material adapted of height filter glass window to release through outer sensor, can survey the infrared ray change energy that shoots out from the human body width of cloth with the noncontact form, and change change energy into electric signal.When human body when monitoring space moves, after people's body heat is released infrared permeation Fresnel optical frames, form the bigger infrared ray of change, the electric signal that forms on sensor like this is the low frequency modulated wave, moving up and down appears in the current potential of ordering at S, utilizes R3, C2 differentiating circuit, gets its momentary variation value, adopt T type network amplifier to amplify, can realize low resistance high-amplification-factor signal amplification circuit.Adopt voltage comparator circuit, when no human body is responded to, amplify output potential about 0.7, voltage when comparative voltage is higher than the induction of no human body, being high level output when no human body is responded to, is low level output when human action is arranged, and adjusts the just distance of energy adjustable range of W1.Adopt to drive trigger circuit, it is integrated fast that high level triggers sound equipment, promotes with triode, R9, R8 is set can reduces quiescent current, can trigger tablet reliably again.Sound equipment takes place and power amplification circuit, adopt 52XX series language sheet, the size decision velocity of sound of R10, power amplifier PNP and the compound amplification of NPN triode, with D2, W2 shunting, when guaranteeing that enlargement factor is excessive and sound is undistorted, with the magneto microphone of big impedance, the size of volume can be satisfied, low, the sound clarity of power consumption can be made again.

Advantage of the present utility model: 1, simple in structure, make easily, price is low; 2, the bodily form is light and handy, and suspension is easy to carry; 3, static power consumption is low, and only 0.8 milliampere, adopt 4.5V direct current three joint No.5 cells to get final product, easy to use; 4, circuit design advanced person compares with similar infrared alarm circuit, have element few, simple, reliable, initiatively the warning sensitivity height, the monitoring distance is adjustable, characteristics such as no tripping; 5, initiatively caveat section adopts the electromagnetic type speech loudspeaker in 350 Europe, can satisfy the required volume in working site, and power consumption is low, and lamprophonia, acoustics are good; 6, debugging is simple, and sunshine and other light width of cloth are penetrated no misoperation, and is only fast, highly sensitive to the reflection of human body thermal radiation; 7, be used for industrial and mineral, the high and low distribution of enterprise and service work, widely applicable; Market outlook are good; 8, the personal injury in the electrical production work that prevents that can be effective takes place, and is of value to safety in production, increases work efficiency.

Fig. 1 is an agent structure synoptic diagram of the present utility model, and Fig. 2 is a front view (FV), and Fig. 3 is circuit theory diagrams.

Most preferred embodiment of the present utility model: circuit board (2) is installed in the drain pan (6), being equipped with on the panel (7) is corresponding with circuit board with the supporting Fresnel light microscopic receiver window (1) of sensor, loudspeaker (3) are installed in the drain pan corresponding with the hole that amplifies (10), battery (4) is installed in the battery compartment (9) of drain pan bottom, Hatch Opening is the battery compartment cover plate (5) with the drain pan adapted, lead (11) is communicated with power supply with loudspeaker, circuit board, hang ear (8) and be in the drain pan top.Alarm the circuit of forming by infrared probe and language, be to adopt high hot coefficient material adapted filter glass window to form heat to release infrared sensor, the modulated wave signal of the extremely low frequency of source S 1 output, be input to by A1 and R3, R4, R5, R6, C2, C3, the active power filtering T type network amplifier that C4 constitutes, after carrying out the signal amplification, be input to the inverting input of A2 voltage comparator, when inverting input is higher than the normal phase input end comparative voltage, A2 is output as low level, T1 is ended, the T1 collector is output as high level, be added to the sound integrated package and trigger pin 1, make sound integrated package triggering work, the output of sound integrated package is added to T2, after the hybrid power that T3 constitutes amplifies, drive loudspeaker, R1, C1 constitutes stabilized voltage supply.

Claims (1)

1. A kind of electric power safety is produced automatic monitoring alarm nameplate, comprise loudspeaker, battery, circuit board, it is characterized in that circuit board (2) is installed in the drain pan (6), on the panel (7) to be equipped with the supporting Fresnel optical frames of sensor be that receiver window (1) is corresponding with circuit board, loudspeaker (3) are installed in the drain pan corresponding with the hole that amplifies (10), battery (4) is installed in the battery compartment (9) of drain pan bottom, battery compartment cover plate (5) and drain pan adapted, lead (11) is power supply and loudspeaker, circuit board is communicated with, hang ear (8) and be positioned at the drain pan top, heat is released infrared acquisition optical frames sensor source electrode S, access is by A1 and R3, R4, R5, R6, C2, C3, the active power filtering T type network amplifier circuit that C4 constitutes, the inverting input that is communicated with the A2 voltage comparator circuit, the T1 collector output connects the sound integrated package and triggers pin 1, the sound integrated package passes through by T2, the hybrid power amplifying circuit that T3 constitutes, drive loudspeaker, R1, C1 constitutes stabilized voltage supply.

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