CN201607797U

CN201607797U - Acoustic control alarm

Info

Publication number: CN201607797U
Application number: CN2009202424879U
Authority: CN
Inventors: 陈清尧
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-12
Filing date: 2009-10-12
Publication date: 2010-10-13
Anticipated expiration: 2019-10-12

Abstract

The utility model discloses an acoustic control alarm which is characterized by comprising an acoustic control trigger circuit, a timing circuit, a Darlington signal amplifying circuit and a control executive circuit. The acoustic control trigger circuit comprises a resistor R1, a capacitance type pickup head MIC, a first capacitor CI and a unidirectional silicon-controlled rectifier SCR; the timing circuit consists of a second capacitor C2 and a potentiometer R2; the Darlington signal amplifying circuit consists of a first triode VT1, a second triode VT2, a relay J and a diode VD; and the control executive circuit consists of a 6V direct current power supply, a switch SA, a relay first contact point J-1, a relay second contact point J-2 and a buzzer HA. The acoustic control alarm achieves the purpose of deterring housebreaking burglary in an acoustic control alarm manner and can be used for guaranteeing the safety of households, stores, offices and other places. The acoustic control alarm has the advantages of simple structure, high sensitivity, low manufacturing cost, convenient use, high durability and the like.

Description

The voice-control alarm device

Technical field

The utility model relates to alarm, is specifically related to the voice-control alarm device.

Background technology

Alarm is of a great variety on the market at present, complex structure, the cost of manufacture height, installation and use are not too convenient, how to ensure ground safety such as household, retail shop, office by a kind of easy voice-control alarm mode, advantages such as reach the purpose that threatens burglary, the utility model voice-control alarm utensil has simple in structure, highly sensitive, and cost of manufacture is low, easy to use and durable in use.

The utility model content

The technical matters that the utility model proposed is to solve like this: construct a kind of voice-control alarm device, it is characterized in that: comprise acoustic control trigger circuit, timing circuit, Darlington signal amplification circuit and control executive circuit; The acoustic control trigger circuit are made up of resistor R 1, condenser cartridge MIC, the first capacitor C1 and unidirectional controllable silicon S CR; Timing circuit is made up of the second capacitor C2 and potentiometer R2; The Darlington signal amplification circuit is made up of the first triode VT1, the second triode VT2, relay J and diode VD; The control executive circuit is made up of 6V direct supply, switch S A, the relay first contact J-1, the relay second contact J-2 and hummer HA.

According to voice-control alarm device provided by the utility model, it is characterized in that: acoustic control trigger circuit resistor R 1 one ends connect the relay first contact J-1, the other end links to each other with the first capacitor C1, pick-up head MIC one end, and the pick-up head MIC other end is connected with power cathode; Unidirectional controllable silicon S CR anode A connects the relay first contact J-1, and control utmost point G connects the first capacitor C1, and negative electrode K is connected with the timing circuit second capacitor C2, timing adjustable potentiometer R2 one end.

According to voice-control alarm device provided by the utility model, it is characterized in that: the collector of the Darlington signal amplification circuit first triode VT1, the second triode VT2 is connected with relay coil one end, the first triode VT1 base stage links to each other with the potentiometer R2 other end, the emitter of the first triode VT1 is connected with the second triode VT2 base stage, and the emitter of the second triode VT2 connects power cathode.

According to voice-control alarm device provided by the utility model, it is characterized in that: control executive circuit hummer HA one end directly connects power cathode, and the other end connects the relay second contact J-2 after switch connects positive source.

The beneficial effects of the utility model are: reach the purpose that threatens burglary by a kind of simple and easy voice-control alarm mode, can be used for ensureing ground safety such as household, retail shop, office, advantages such as this voice-control alarm utensil has simple in structure, highly sensitive, and cost of manufacture is low, easy to use and durable in use.

Description of drawings

Accompanying drawing 1 is a circuit structure diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

As shown in Figure 1, the utility model is made up of acoustic control trigger circuit, timing circuit, Darlington circuit and control executive circuit; The SA switch that closes is because the control utmost point G of SCR one-way SCR is in critical triggering state, not conducting of controllable silicon; Be subjected to the sonic impinging of certain intensity as electret condenser cartridge MIC after, the pulsating current that is produced by resistor R 1 triggers SCR control utmost point G through first capacitor C1 coupling, the controllable silicon SCR conducting, + 6V power supply is by switch S A, the first contact J-1 that relay is normally closed, controllable silicon A, K extremely charges to the second capacitor C2, the first triode VT1, the Darlington transistor base stage that the second triode VT2 forms obtains the forward bias voltage conducting, the relay J coil gets, the second contact J-2 closing of contact of relay normally open, high loudness hummer HA connects and sends chimes of doom; In the moment that the normally closed first contact J-1 disconnects, controllable silicon SCR is ended, the second capacitor C2 begins discharge, regularly 20-30 is after time second, along with reducing gradually of the second capacitor C2 discharge current in the timing circuit, the first triode VT1 base voltage reduces gradually, the darlington amplifying circuit collector current of forming as the first triode VT1 and the second triode VT2 is during less than the operating current of relay J, the relay J coil can't be kept adhesive, the relay second contact J-2 disconnects, hummer HA stops to report to the police, and the first relay contact J-1 recovers normally off.

Component parameter: SCR selects the MCR100-6 one-way SCR for use; MIC selects CRZ12-9 type electret capacitor type pick-up head for use; J selects direct current 6V miniature relay for use; HA selects the high loudness hummer of direct current 6V for use; The first capacitor C1 selects the monolithic capacitor of 0.1uF for use, and the second capacitor C2 selects the aluminium electrolutic capacitor of 22u/10V for use; It is the carbon film resistor of 30K that R1 selects the 1/8W resistance for use, and R2 selects the 15K carbon-film potentiometer for use; The first triode VT1 and the second triode VT2 select the C9014 model for use; Diode VD selects the IN4148 model for use.

Utility model also can be made various alternatives, more than by embodiment by accompanying drawing 1 illustrated embodiment, be that foregoing of the present utility model is described in further detail, but this should be interpreted as that the scope of the theme that the utility model is above-mentioned only limits to described example.Do not breaking away under the above-mentioned technological thought situation of the utility model, various replacements and change according to ordinary skill knowledge and customary means are made all should be included in the scope of the present utility model.

Claims

1. a voice-control alarm device is characterized in that: comprise acoustic control trigger circuit, timing circuit, Darlington signal amplification circuit and control executive circuit; The acoustic control trigger circuit are made up of resistor (R1), condenser cartridge (MIC), first capacitor (C1) and one-way SCR (SCR); Timing circuit is made up of second capacitor (C2) and potentiometer (R2); The Darlington signal amplification circuit is made up of first triode (VT1), second triode (VT2), relay (J) and diode (VD); The control executive circuit is made up of 6V direct supply, switch (SA), relay first contact (J-1), relay second contact (J-2) and hummer (HA).

2. voice-control alarm device according to claim 1, it is characterized in that: acoustic control trigger circuit resistor (R1) end connects relay first contact (J-1), the other end links to each other with first capacitor (C1), pick-up head (MIC) end, and pick-up head (MIC) other end is connected with power cathode; One-way SCR (SCR) anode (A) connects relay first contact (J-1), and the control utmost point (G) connects first capacitor (C1), and negative electrode (K) is connected with timing circuit second capacitor (C2), timing adjustable potentiometer (R2) end.

3. voice-control alarm device according to claim 1 and 2, it is characterized in that: the collector of Darlington signal amplification circuit first triode (VT1), second triode (VT2) is connected with relay coil one end, first triode (VT1) base stage links to each other with potentiometer (R2) other end, the emitter of first triode (VT1) is connected with second triode (VT2) base stage, and the emitter of second triode (VT2) connects power cathode.

4. voice-control alarm device according to claim 1 is characterized in that: control executive circuit hummer (HA) end directly connects power cathode, and the other end connects relay second contact (J-2) after switch connects positive source.