CN105049961A

CN105049961A - Induction type wireless conversation apparatus of intelligent household system

Info

Publication number: CN105049961A
Application number: CN201510405229.8A
Authority: CN
Inventors: 严立
Original assignee: CHENGDU HONGYI TIANCHENG TECHNOLOGY Co Ltd
Current assignee: CHENGDU HONGYI TIANCHENG TECHNOLOGY Co Ltd
Priority date: 2015-07-13
Filing date: 2015-07-13
Publication date: 2015-11-11

Abstract

The invention discloses an induction type wireless conversation apparatus of an intelligent household system and aims to provide an induction type wireless conversation apparatus adopting a Doppler effect induction object. The induction apparatus determines whether there is a visitor or not, if so, a telephone is turned on for helping the visitor to talk to a master. The induction type wireless conversation apparatus comprises a capacitor step-down half-wave rectification circuit, a Doppler trigger circuit, a trigger circuit, a self-locking circuit, a drive circuit and a wireless microphone circuit. When the visitor enters an induction area, a wireless microphone starts working, and the visitor can talk to the master; and when the visitor leaves, the wireless microphone stops working, so that noise is prevented from entering a room when there is no visitor.

Description

A kind of induction type Wireless calling apparatus of intelligent domestic system

Technical field

The present invention relates to Smart Home technical field, provide a kind of induction type Wireless calling apparatus of intelligent domestic system.

Background technology

Along with the development of society and the raising of scientific and technical progress and people's material and cultural life, the intelligent concern being more and more subject to society, as Intelligent Building System, intelligent domestic system etc., its main thought goes to realize housed device by the science and technology of existing electronics, the intellectuality of office equipment, reduce the labour intensity of people, with quality of making the life better, for present metropolitan high speed, allegro life, the intellectuality of equipment will provide the quality of the life of people undoubtedly at home, and for this huge system of Smart Home, it is broadly divided into intelligent security guard, intelligent call, intelligent appliance controls, intelligent network etc., and provide a kind of intelligent call equipment to be absolutely necessary, existing verbal system mostly is, oneself manual ON verbal system is needed when visitor walks in front of the door, if run into the visitor of physical disabilities, so this certainly will will be a very awkward thing.

Summary of the invention

The object of the present invention is to provide a kind of induction type Wireless calling apparatus adopting Doppler effect induction targets, judged whether visitor by induction installation, if any visitor, namely connected microphone, talk with to facilitate guest and owner.

The invention provides following technical scheme to achieve these goals:

An induction type Wireless calling apparatus for intelligent domestic system, is characterized in that, comprises capacitance decompression half-wave rectifying circuit, Doppler's circuits for triggering, circuits for triggering, latching circuit, drive circuit, wireless Mac circuit;

Capacitance decompression half-wave rectifying circuit: comprise resistance R1, electric capacity C1-C2, diode D1-D2, voltage-stabiliser tube VS, after described electric capacity C1 is in parallel with resistance R1, one end gets access to grid live wire, the anode of another terminating diode D1 and the negative electrode of diode D2, diode D2 plus earth, the negative electrode of diode D1 connects electric capacity C2 and voltage-stabiliser tube VS negative electrode, the electric capacity C2 other end and the equal ground connection of voltage-stabiliser tube VS anode, civil power delivers to diode D1 after electric capacity C1 step-down, diode D1 completes halfwave rectifier, electric capacity C2 carries out pulsating direct current filtering to the electric energy after rectification, voltage stabilizing didoe VS carries out voltage stabilizing, export direct current,

Doppler's circuits for triggering: the doppler effect sensors comprising RD627 model, electric capacity C3 is provided with between 5 pins of doppler effect sensors and 3 pins, loop aerial is provided with between 1 pin and 2 pins, 4 pins connect the negative electrode of voltage stabilizing didoe VS, 7 pin ground connection, and driftlessness is not in induction range, 6 pins export constant DC voltage, when target appears in induction range, loop aerial receives the microwave signal that testee returns, 6 pin output ripple voltage signals;

Circuits for triggering: comprise triode Q1, the base stage pulsating voltage signal be connected with for being exported by doppler effect sensors 6 pin of triode Q1 is coupled to the electric capacity C4 of the base stage of triode Q1, the inter-collector of electric capacity C4 and triode Q1 is connected with current-limiting resistance R2, resistance R3 is connected with between the electrode of triode collection Q1 and the negative electrode of voltage-stabiliser tube VS, the grounded emitter of triode Q1, the collector electrode of triode Q1 connects one end of electric capacity C5, the electric capacity C5 other end is connected with triode Q2 and diode D3, electric capacity C5 connecting triode Q2 base stage and diode D3 negative electrode, the plus earth of diode D3, the collector electrode of diode Q2 is connected with the negative electrode of voltage-stabiliser tube VS by resistance R4, the grounded emitter of triode Q2, the collector electrode of triode Q2 is drawn and is connected with NE555IC chip,

The collector electrode of 4 pin connecting triode Q2 of NE555IC chip, 8 pins meet voltage-stabiliser tube VS, 1 pin ground connection, and 2 pins and 6 pins pass through resistance R5 ground connection, 3 pin output drive signals;

Latching circuit: comprise triode Q3, the collector electrode of triode Q3 connects 2 pins of NE555IC chip, the grounded emitter of triode Q3, and the base stage of triode Q3 connects NE555IC chip 3 pin by resistance R7;

Drive circuit: comprise triode Q4, the collector electrode of triode Q4 connects the negative electrode of voltage-stabiliser tube VS, and the collector electrode of triode Q4 connects NE555IC chip 3 pin by current-limiting resistance R6;

Wireless Mac circuit: the resistance R7 comprising another termination microphone of termination triode Q4 emitter, microphone is connected termination coupling capacitance C7 one end with resistance R7, microphone other end ground connection, coupling capacitance C7 connecting triode Q5, the base stage of triode Q5 is connected with coupling capacitance C7, coupling capacitance C7 other end connecting triode Q5, biasing resistor R8 is connected with between the base stage of triode Q5 and voltage-stabiliser tube VS negative electrode, the base stage of triode Q5 is connected with feedback capacity C8, electric capacity C8 connects triode Q5 emitter by resistance R9, the collector electrode of triode Q5 is connected with the oscillation circuit be made up of inductance L and electric capacity C9, the collector electrode of triode Q5 draws antenna by electric capacity C10.

Because the present invention adopts technique scheme, so possess following beneficial effect:

When visitor enters in induction region, wireless Mike starts working, and guest can owner Yu converse, and when visitor leaves, wireless Mike quits work, and imports noise into indoor when this avoid nobody.

Accompanying drawing explanation

Fig. 1 is circuit diagram of the present invention.

Embodiment

The invention discloses the induction type Wireless calling apparatus of the intelligent domestic system based on Doppler effect, it comprises capacitance decompression half-wave rectifying circuit, Doppler's circuits for triggering, circuits for triggering, latching circuit, drive circuit, wireless Mac circuit;

If target is not in induction range, 6 pins export constant DC voltage, constant DC voltage signal is coupled to the base stage of triode Q1 through capacitor C4, exports, add to the base stage of triode Q2 through capacitor C5 after triode Q1 amplifies from collector electrode, make triode Q2 conducting, the collector electrode output low level of triode Q2, thus 4 pin of NE555IC chip become low level, 3 pin output low levels, triode Q3 and triode Q4 is all ended, and rear class is wireless, and Mac circuit does not work;

When target appears in induction range, 6 loop aerials receive the microwave signal that testee returns, 6 pin output ripple voltage signals, pulsating voltage signal is coupled to the base stage of triode Q1 through capacitor C4, pulsating voltage signal makes triode Q1 end, thus cause triode Q2 to end, thus 4 pin of NE555IC chip become high level, 3 pins of NE555IC chip also become high level, triode Q4 conducting, wireless Mac circuit enters operating state, simultaneously triode Q3 also conducting make 2 pins of NE555IC chip be low level.

Answer controller inner annular antenna and RD627 model IC chip to form the microwave oscillator of an operating frequency 10.525GHz, loop aerial had both made transmitting antenna also can receive human motion and the echo reflected.After the semiconductor PN mixing of inner microwave triode, beat detects faint frequency shift signal (movable signal of human body both having been detected), the detection frequency shift signal of some strength is only changed into the different constant amplitude pulse of width by the interference signal that first microwave special microprocessor RD627 removes amplitude size, circuit refers to the monomer signal that identification pulse is enough wide, as human body, its discriminator circuit of vehicle are just triggered, or in two seconds 2 ~ 3, width discriminating circuit is also triggered.Human body microwave sensor, microwave sensor is based on microwave Doppler principle, and induction system made by annular type antenna, makes a kind of inductor controlled with microprocessor.RD627 microwave detector is with the transmitting of 10.525GHz microwave frequency, receives, and complete machine key components is import device.

Claims

1. an induction type Wireless calling apparatus for intelligent domestic system, is characterized in that, comprises capacitance decompression half-wave rectifying circuit, Doppler's circuits for triggering, circuits for triggering, latching circuit, drive circuit, wireless Mac circuit;