CN202331680U

CN202331680U - Voice control trigger alarm

Info

Publication number: CN202331680U
Application number: CN2011204211395U
Authority: CN
Inventors: 陈清尧
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-31
Filing date: 2011-10-31
Publication date: 2012-07-11
Anticipated expiration: 2021-10-31

Abstract

The utility model discloses a voice control trigger alarm. The alarm is characterized by comprising a voice control trigger circuit, a timing circuit, a Darlington signal amplification circuit and an execution control circuit, wherein the voice control trigger circuit consists of a resistor, a capacitance sound head, a capacitor and a one-way silicon controlled rectifier; the timing circuit consists of a capacitor and a potentiometer; the Darlington signal amplification circuit consists of a triode, a relay and a diode; and the execution control circuit consists of an alternating current (AC) and direct current (DC) dual-purpose power supply, a switch, a relay contact J-1, a relay contact J-2 and a buzzer HA. The voice control trigger alarm fulfills the aim of scaring and stopping burglary in a voice control warning mode and can be used for guaranteeing the safety of homes, shops, offices and the like. The voice control trigger alarm has the advantages of simple structure, high sensitivity, low manufacture cost, convenience for use and high durability, and is also suitable for the practical training of students majored in electronics.

Description

Acoustic control triggers alarm

Technical field

The utility model belongs to the electronic equipments field, is specifically related to acoustic control and triggers alarm.

Background technology

Acoustic control triggering alarm is of a great variety on the market at present; Complex structure, cost of manufacture is high, and installation and use are not too convenient; How to ensure ground safety such as household, retail shop, office through a kind of easy voice-control alarm mode; Reach the purpose that threatens burglary, the utility model acoustic control trigger alarm have simple in structure, highly sensitive, advantage such as cost of manufacture is low, easy to use and durable in use.

Summary of the invention

The technical matters that the utility model proposed is to solve like this, constructs a kind of acoustic control and triggers alarm, 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, capacitor C1 and unidirectional controllable silicon S CR; Timing circuit is made up of capacitor C2 and potentiometer R2; The Darlington signal amplification circuit is made up of triode VT1, triode VT2, relay J and diode VD; The control executive circuit is made up of 6V direct supply and ac buck rectification circuit, switch S A, the relay first contact J-1, the relay second contact J-2 and hummer HA; Acoustic control trigger circuit resistor R 1 one ends connect the relay first contact J-1, and the other end links to each other with 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 capacitor C1, and negative electrode K is connected with timing circuit capacitor C2, potentiometer R2 one end; The collector of Darlington signal amplification circuit triode VT1, triode VT2 is connected with relay coil one end; Triode VT1 base stage links to each other with the potentiometer R2 other end; The emitter of triode VT1 is connected with triode VT2 base stage, and the emitter of triode VT2 connects power cathode; Control executive circuit hummer HA one end directly connects power cathode, and the other end connects the end of power switch SA behind the relay second contact J-2, and the switch S A other end connects the cathode output end of power supply.

The beneficial effect of the utility model is: reach the purpose that threatens burglary through a kind of simple and easy voice-control alarm mode; Can be used for ensureing ground safety such as household, retail shop, office; This acoustic control triggers alarm and has simple in structure, highly sensitive; Advantages such as cost of manufacture is low, easy to use and durable in use, also suitable electrical type student carries out electronics and trains in fact.

Description of drawings

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

Embodiment

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

Shown in accompanying drawing 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; Receive the sonic impinging of certain intensity as electret condenser cartridge MIC after; The pulsating current that is produced through resistor R 1 triggers SCR control utmost point G through capacitor C1 coupling; The controllable silicon SCR conducting; DC-AC two-use+6V power supply extremely charges to the second capacitor C2 through switch S A, the normally closed first contact J-1, controllable silicon A, the K of relay, and the Darlington transistor base stage that triode VT1, triode VT2 form obtains the forward bias voltage conducting, and 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 breaks off, controllable silicon SCR is ended, and capacitor C2 begins discharge; Regularly 20-30 is after time second; Along with reducing gradually of capacitor C2 discharge current in the timing circuit, triode VT1 base voltage reduces gradually, and the darlington amplifying circuit collector current of forming as triode VT1 and 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 breaks off, and hummer HA stops to report to the police, and the first relay contact J-1 recovers normally off.

It is the miniature transformer of 5W, 220V/6V that component parameter: T selects power for use; 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; Capacitor C1 selects the monolithic capacitor of 0.1uF for use, and 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; Triode VT1 and triode VT2 select the C9014 model for use; Diode VD selects the IN4148 model for use, and diode D1-D5 selects the ID4007 model for use.

Utility model also can be made various alternatives; More than through embodiment by accompanying drawing 1 illustrated embodiment; Be that the foregoing of the utility model is done further explain, but should this be interpreted as that the scope of the theme that the utility model is above-mentioned only limits to described instance; 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 utility model.

Claims

1. an acoustic control triggers alarm, 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, capacitor C1 and unidirectional controllable silicon S CR; Timing circuit is made up of capacitor C2 and potentiometer R2; The Darlington signal amplification circuit is made up of triode VT1, triode VT2, relay J and diode VD; The control executive circuit is made up of 6V direct supply and ac buck rectification circuit, switch S A, the relay first contact J-1, the relay second contact J-2 and hummer HA; Acoustic control trigger circuit resistor R 1 one ends connect the relay first contact J-1, and the other end links to each other with 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 capacitor C1, and negative electrode K is connected with timing circuit capacitor C2, potentiometer R2 one end; The collector of Darlington signal amplification circuit triode VT1, triode VT2 is connected with relay coil one end; Triode VT1 base stage links to each other with the potentiometer R2 other end; The emitter of triode VT1 is connected with triode VT2 base stage, and the emitter of triode VT2 connects power cathode; Control executive circuit hummer HA one end directly connects power cathode, and the other end connects the end of power switch SA behind the relay second contact J-2, and the switch S A other end connects the cathode output end of power supply.