CN2468026Y

CN2468026Y - Automatic monitoring alarmer for noise

Info

Publication number: CN2468026Y
Application number: CN 01212674
Authority: CN
Inventors: 郑禄
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-03
Filing date: 2001-03-03
Publication date: 2001-12-26
Anticipated expiration: 2011-03-03

Abstract

The utility model relates to an automatic monitoring alarming device for noise, which comprises a noise single detecting circuit for and a monolithic computer. The utility model is characterized in that a noise detecting circuit which has the functions of noise detection and acoustoelectric conversion is connected with an interface circuit of the monolithic computer. An alarm sounding circuit is connected with the interface circuit of the monolithic computer. The connecting points of an on-off control circuit which is connected with the monolithic computer are serially connected in a power supply return circuit of equipment which produces the noise. The automatic monitoring alarming device for noise is favorable for a user to implement automatic monitoring to the equipment which produces the noise. The utility model has the advantage of low cost.

Description

Noise automatic monitoring alarm device

The utility model relates to a kind of noise automatic monitoring alarm device.

Number of patent application is a kind of noise autoalarm that the applicant design has been narrated in 01212440.0 patented claim, and this device is applicable to that mainly environmental administration carries out remote monitoring to the place that noise may take place and manages, and the cost of package unit is higher.

The purpose of this utility model is that a kind of noise automatic monitoring alarm device will be provided, and it not only helps the user equipment that produces noise is carried out monitoring automatically, and cost is lower.

The utility model is to constitute like this, and it comprises noise signal testing circuit and single-chip microcomputer.It is characterized in that: (1) has the noise detecting circuit that noise sound detects and acoustic-electric is changed and is connected with an interface circuit of single-chip microcomputer, (2) the warning phonation circuit is connected with the interface circuit of single-chip microcomputer, and the contact of the ON-OFF control circuit that (3) are connected with single-chip microcomputer is serially connected with in the electric power loop that produces noise equipment

The utility model is owing to be provided with the ON-OFF control circuit that produces the work loop of noise equipment in order to control, therefore, when noise surpassed established standards, the alerting signal of being sent here by noise detecting circuit will order about single-chip microcomputer and ON-OFF control circuit is cut off the equipment that produces noise.Therefore, this installs not only simple structure, and cost is low, and monitoring effect is good automatically, and use in places such as be particularly suitable for playing Karaoka dance hall and workshop.

Below in conjunction with drawings and Examples the utility model is specifically described.

Fig. 1 is the block diagram of noise automatic monitoring alarm device.

Fig. 2 is the block diagram of noise detecting circuit.

Fig. 3 is a noise automatic monitoring alarm manipulated or operated apparatus.

With reference to accompanying drawing, noise automatic monitoring alarm device of the present utility model, it comprises noise signal testing circuit and single-chip microcomputer.It is characterized in that: (1) has the noise detecting circuit that noise sound detects and acoustic-electric is changed and is connected with an interface circuit of single-chip microcomputer, (2) the warning phonation circuit is connected with the interface circuit of single-chip microcomputer, and the contact of the ON-OFF control circuit that (3) are connected with single-chip microcomputer is serially connected with in the electric power loop that produces noise equipment.

Above-mentioned warning phonation circuit is made up of early warning phonation circuit, warning police whistle sound generation circuit, power amplification and control circuit.

Above-mentioned single-chip microcomputer can be by EM78 series, and the PIC16C series monolithic constitutes.

The concrete course of work of the utility model embodiment is as follows:

Noise detecting circuit: with Q1 is core, and R3, R4 form the Q1 base bias, and C4, C5 are anti-interference capacitor, and D1 is the polarity protection diode, and R2 is the collector pull-up resistor.When noise probe detects when noise surpasses setting value (both noise exceeded standard), will transmit an alerting signal to the base stage of Q1 from 1,2 pin of terminal.(just often, probe should make between the terminal 1,2 and be in short-circuit condition, is off-state during warning).Q1 will enter state of saturation by cut-off state this moment.The collector of Q1 will transmit a low level signal to 18 pin of EM78P154--IC1, and IC1 then carries out processing such as early warning, warning according to this signal.

The early warning phonation circuit: this circuit is made up of 9 pin of C13, R9 and IC1, when being in alert status, 9 pin of IC1 will outwards send a series of square-wave signal, and this signal transmits to the input end (3 pin of LM386--IC2) of power amplification circuit by C13, R19, makes loudspeaker send early warning sound.

Warning police whistle sound generation circuit: this circuit is made up of 4 sounding module I C3 and R14, C16, and when circuit entered alarm condition, 10 pin of IC1 were sent high level, makes IC3 get electric and sends police whistle sound, and this acoustical signal transmits to 3 pin of IC2 by C16, R14.

Power amplification and control circuit: power amplification is made up of IC2 and peripheral capacitor C 11, C12, C14 and resistance R 10, when the electric signal of sounding enters 3 pin of IC2 after the inner amplifying circuit of IC2, by the output of 5 pin, promote speaker operation, so that send loud sound.The power amplification control circuit mainly is made up of Q3, Q4, and this circuit is a power switch circuit, and when needs send the sound, 8 pin of IC1 will be sent high level, make Q3, Q4 conducting, connects the power supply of IC2, and C10 is the power supply decoupling capacitance of IC2.

The out-put supply control circuit: this circuit is by 17 pin of IC1, and R5, Q2 and J1 form, and when circuit enters alarm condition, 17 pin of IC1 will be sent high level, make the Q2 conducting, and the coil of relay J 1 gets electric, makes the contact adhesive of J1, disconnects out-put supply.

Indicating circuit: it is power supply indication, early warning indication, the indication of reporting to the police that this circuit divides three parts.Power indicating circuit is made up of R15, LED2, and+5V makes LED2 get electric lighting by the R15 current limliting, and the indication power supply is worked; The early warning indicating circuit is made up of 9 pin, R16 and the LED3 of IC1, and when circuit enters early warning, 10 pin of IC1 will outwards be sent a series of square-wave signal and make the LED3 flicker through the R16 current limliting; The warning indicating circuit is made up of R11, LED1, and when circuit entered alarm condition, 10 pin of IC1 were sent a high level signal, through the R11 current limliting LED1 are lighted.

The utility model is not only novel, rational in infrastructure, stable performance, practical, can carry out scene monitoring automatically to man-made noise, domestic noise etc.Have early warning, warning and power supply prompting.Can be widely used in to carry out noise intensity the industrial site and the life area of monitoring alarm.

Claims

1, a kind of noise automatic monitoring alarm device comprises noise signal testing circuit and single-chip microcomputer.It is characterized in that: (1) has the noise detecting circuit that noise sound detects and acoustic-electric is changed and is connected with an interface circuit of single-chip microcomputer, (2) the warning phonation circuit is connected with the interface circuit of single-chip microcomputer, and the contact of the ON-OFF control circuit that (3) are connected with single-chip microcomputer is serially connected with in the electric power loop that produces noise equipment.

2, noise automatic monitoring alarm device according to claim 1 is characterized in that; The warning phonation circuit is made up of early warning phonation circuit, warning police whistle sound generation circuit, power amplification and control circuit.

3, noise automatic monitoring alarm device according to claim 1 and 2, it is characterized in that: the noise signal testing circuit is made up of walkaway probe, acoustic-electric change-over circuit, current rectifying and wave filtering circuit and comparison amplifying circuit.