CN2430740Y - Micvrowave anti-theft alarm - Google Patents

Abstract

The utility model relates to a microwave anti-theft alarm device which comprises a micropower transmitter, a receiver with a telephone dial and an acoustic horn, and a remote controller. The utility model uses a microwave sensor to match wireless transmission and reception and to achieve the purpose of anti-theft alarm through a wire telephone; the utility model especially uses an advanced integrated circuit and an electronic switching circuit to make a whole control circuit have no relay; The utility model has the advantages of compact structure, small size, low cost, high reliability, strong practicability, convenient installation, etc.; the utility model fundamentally overcomes defects of false alarm caused by that an infrared sensor is disturbed by insects, and can be widely used at antitheft and alarm occasions in families, shops, storehouses, etc.

Description

The microwave burglar alarm

The utility model relates to a kind of warning device, especially a kind of microwave burglar alarm.

Present widely used alarm or warning device have the alarm that sends chimes of doom when theft takes place in the range to be monitored, but the no one equals illusory at the scene the time; Alarm by the electric wire networking is arranged, but complexity is installed, workload is big, the expense height; Wireless telecommunications are reported to the police and can be addressed the above problem, but infrared ray sensor is disturbed by insects, causes wrong report easily.

It is a kind of when no matter the thief enters controlled area by any way that the purpose of this utility model is to provide, sensor can start time machine that connects exactly, automatically put through default radio pager, mobile phone or telephone set by telephone network and notify owner, and send the microwave burglar alarm of chimes of doom simultaneously.

The utility model is achieved like this: the microwave burglar alarm that includes micropower transmitter, the dialing of charged words and Music centre loudspeaker by receipts machine and telepilot, be subjected to microwave signal that human body disturbs to amplify, after the shaping, start by the output of lock-in amplifier and to trigger delay circuit and restart oscillator and band modulation transmitter through the ultrahigh frequency oscillatory circuit; The ultrahigh frequency receiving circuit receives the carrier signal of micropower transmitter and telepilot, amplify and enters decoding circuit after the shaping and decode, decoding back signal triggers delay circuit by the controlled switch drives, restart telephone switch circuit and telephone dialer circuit, mobile phone, beeper and telephone number that owner is preset enter telephone network automatically by dial-up circuit, and send chimes of doom by acoustics circuit.

The utility model utilizes human body to disturb microwave energy to change to start the micropower transmitter, reliably the human body of motion and the object of motion are distinguished, especially electronic switching circuit and controlled switch circuit have been adopted, traditional hook switch and relay have been replaced, thereby make and the utlity model has compact conformation, volume is little, cost is low, reliability is high, advantage such as practical, easy to install, can be widely used in burglar alarm occasions such as household, shop, warehouse.

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

Fig. 1 is the utility model theory diagram;

Fig. 2 is the micropower transmitter principle block diagram that contains microwave remote sensor;

Fig. 3 is the receiver principle block diagram;

Fig. 4 is a micropower transmitter circuitry schematic diagram;

Fig. 5 is the receiver circuit schematic diagram;

Fig. 6 triggers the delay circuit schematic diagram;

Fig. 7 is the receiver structure front view.

With reference to Fig. 1, Fig. 2 and Fig. 3, microwave remote sensor is operated in the microwave section, principle of work is based on " how general column effect ", after the amplification of microwave interference signal process ultrahigh frequency oscillatory circuit, the shaping, enter triggering delay circuit the 2nd pin by the output of lock-in amplifier the 7th pin, trigger delay circuit the 6th pin and start oscillator and band modulation transmitter, the emission of micropower transmitter is held time and is depended on the capacity that is connected to the capacitor C that triggers delay circuit the 3rd, 5 pin.

The ultrahigh frequency receiving circuit receives the signal of micropower transmitter and telepilot, after amplifying shaping, enter first decoding circuit and second decoding circuit is decoded, first decoding circuit is with the coded signal decoding of micropower transmitter, trigger pip triggers delay circuit by the controlled switch drives, trigger delay circuit startup telephone switch circuit and make preset phone number enter telephone network automatically, send chimes of doom by acoustics circuit simultaneously by dial-up circuit; Second decoding circuit makes the control of remote controller signal enter the controlled switch circuit through long and short sound passage, comes " opening " machine or " pass " machine of receiver control with this.

With reference to Fig. 4, inductive coil L ₁, Technitron V ₁, capacitor C ₁With a plurality of resistance R ₁～R ₅Formed the ultrahigh frequency oscillatory circuit.When the human body undesired signal, capacitor C ₂, C ₃On current potential the 6th pin promptly export high level, provide by oscillator IC ₇, ultrahigh frequency triode V ₂, inductive coil L ₂, L ₃, resistance R ₁₈, R ₁₉With a plurality of capacitor C ₀, C ₁₁～C ₁₅Power supply Deng the radiating circuit of forming depends on capacitor C the launch time of micropower transmitter ₁₀The electric capacity size.IC ₅Be integrated package of pressure-stabilizing, E is a battery backup, and LED is the pilot lamp that transmits.

With reference to Fig. 5, receiving circuit B ₁Carrier signal reception, the shaping of micropower transmitter and telepilot are sent into IC after amplifying ₈And IC ₉The 3rd pin decode IC ₈And IC ₉The code frequency of separating depend on R ₇With C ₇And R ₈With C ₈Product because IC ₈And IC ₉The analog encoding difference, so can only enter IC from the signal of micropower transmitter ₈Make its output terminal 8 pin present low-resistance, if this moment controlled switch circuit DR ₁Open then switch triode V ₃Conducting triggers power supply through R ₁₆, D ₁Trigger delay circuit IC respectively ₁₀And IC ₁₁, their the 6th pin is exported high level simultaneously, by IC ₁₀The high level of the 6th pin output is through D ₅Make switch triode V ₁₁Telephone set is connected in conducting, and high level is through R simultaneously ₂₈Connect dial-up circuit IC ₁₂, make owner import the telephone set first number M in advance ₁Automatically transfer to IC after 15 seconds ₁₀Delay time arrives, and its 6th pin is low level, V ₁₁Power supply out of hand makes the telephone set take-up; Owing to be provided with R ₂₆, R ₂₇, C ₁₉, V ₈Delay circuit Deng forming makes on-off circuit DR ₂Just conducting after 20 seconds, high level is through D ₁₇Make V ₁₁Conducting again, telephone set off-hook for the second time make IC simultaneously ₁₃Conducting and the second number M that owner is imported in advance ₂Automatically transfer to IC ₁₀, IC ₁₁The 6th pin high level is held time and is determined to be connected to 3,5 pin capacitor C ₁₆Or C ₁₈The electric capacity size.

Acoustics circuit is by D ₃, D ₄, R ₂₅, V ₇Form, work as K ₂When closing, Music centre loudspeaker oscillatory circuit B ₂Must be electric, send alarming horn sound.

Because IC ₈, IC ₉The analog encoding difference, can only enter IC from the signal of telepilot ₉, make IC from the minor signal of telepilot ₉The 8th pin present low-resistance, V ₄Conducting, signal is through R ₉, D ₂Make DR ₁Conducting provides and triggers delay circuit IC ₁₀, IC ₁₁Power supply; Work as IC ₉Reception is during from telepilot long signal, through R ₁₀, C ₁₅, V ₅Make V behind the delay circuit Deng composition ₆Conducting is with DR ₁The control utmost point 2 changing of human hair combing waste are imported IC successively ₁, IC ₂, IC ₃And LC ₄After amplifying shaping, by lock-in amplifier IC ₄The output of the 7th pin enters and triggers delay circuit IC ₆The 2nd pin triggers delay circuit and is triggered after the conducting, and its electric current passes through R ₁₁Shorted to earth after the current limliting and make DR ₁End, at this moment IC ₁₀, IC ₁₁Even the power supply of losing the job is IC ₈Receive the decoded signal of microwave transmitter, IC ₁₀, IC ₁₁Also can not work, to reach " opening " machine and " pass " machine that comes receiver control with telepilot.

DR ₁And DR ₂Can be ghyristor circuit, its control mode as shown in Figure 5, utilizes the minor signal to pass through D with conventional different ₂High level control DR ₁Open-minded, by the long signal to DR ₁The method of control utmost point short circuit makes its shutoff.

Fig. 6 triggers delay circuit (IC ₆, IC ₁₀, IC ₁₁), electrical schematic diagram, the anode A of controllable silicon SCR is pressed input end 1, and control utmost point G is through resistance R ₆Contact makes a start 2, and negative electrode K meets triode V ₁₀, V ₁₃Emitter, complex pipe V ₁₂, V ₁₃Collector connect output terminal 6, trigger the delay circuit output current and hold time and depend on the amount of capacity of the capacitor C that is connected to 3,5 ends.

IC among Fig. 5 ₁₂, IC ₁₃Model is identical, and its input end 1 pin is through R ₂₈Or R ₂₉Meet IC ₁₀Or IC ₁₁Output terminal 6 pin, the 2nd pin ground connection, the 3rd, the 4 pin dial-up circuit of answering the call is realized automatic dialing, has saved common dial relay.

B among Fig. 5 ₃Be voltage stabilizer, B ₄Be the telephone audio dial-up circuit, D ₅, R ₅₀, V ₁₁Form on-off circuit, save traditional hook switch or relay, and adopt the telephone audio dial-up circuit and the method for the different ground connection of receiver to realize automatic off-hook, shutdown function.

With reference to Fig. 7, the 1st, numerical key (0～9); The 2nd, alarming horn; The 3rd, function key, wherein M ₁, M ₂Be respectively the 1st, the 2nd dialing storage key, USC is the Serial Control key, and STR is a memory button, and SW is an on ﹠ off switch, the 4th, and supply hub.

If IC among Fig. 4 ₄7 pin output behind delay circuit, enter IC ₆2 pin, IC ₆Output terminal 6 pin through stabilivolt with connect the Music centre loudspeaker control circuit after resistance is connected in series, just can become the forecast machine and use separately.

Claims (5)

1. microwave burglar alarm includes the receiver and the telepilot of micropower transmitter, the dialing of charged words and Music centre loudspeaker, it is characterized in that:

The microwave interference signal enters and includes inductive coil (L ₁), ultrahigh frequency triode (V ₁), capacitor (C ₁), (C ₂) and a plurality of resistance (R ₁～R ₅) the ultrahigh frequency oscillatory circuit formed, its output is through capacitor (C ₃) input has (IC successively ₁), (IC ₂) and (IC ₃) amplification and rectification circuit, by lock-in amplifier (IC ₄) 7 pin output, enter and trigger delay circuit (IC ₆) the 2nd pin, (IC ₆) the 6th pin output high level, provide to include (IC ₇), (V ₂) oscillator and the band modulation transmitter power supply;

Ultrahigh frequency receiving circuit (B ₁) carrier signal of micropower transmitter and telepilot received, amplifies to make a gift to someone after the shaping include (IC ₈), (V ₃) first decoding circuit and include (IC ₉), (V ₄) second circuit of separating decode the output of first decoding circuit and controlled switch circuit (DR ₁) 3 pin, trigger delay circuit (IC ₁₀), (IC ₁₁) 1 pin connect, again by the high level that triggers the output of delay circuit 6 pin through including (D ₅), (R ₅₀), (V ₁₁) the telephone switch circuit enter voice-frequency dialing circuit (B ₄), simultaneously by including (D ₃), (D ₄), (R ₂₅), (V ₇) sound control circuit make Music centre loudspeaker oscillatory circuit (B ₂) send chimes of doom.

2. microwave burglar alarm according to claim 1 is characterized in that power input (1) pin of described triggering delay circuit connects the anode (A) of controllable silicon (SCR), and its trigger end (2) pin is by (R ₆) connecing the control utmost point (G) of (SCR), negative electrode (SCR) (K) meets triode (V ₁₀), (V ₁₃) emitter, complex pipe (V ₁₂), (V ₁₃) collector connect output terminal (6).

3. microwave burglar alarm according to claim 1 and 2 is characterized in that (IC ₆), (IC ₁₀) or (IC ₁₁) (3), (4) termination electric capacity (C is arranged ₁₀), (C ₁₆) or (C ₁₈).

4. microwave burglar alarm according to claim 1 is characterized in that (IC ₈) and (IC ₉) (5), (6) end be connected to (R respectively ₇), (C ₇) and (R ₈), (C ₈).

5. microwave burglar alarm according to claim 1 is characterized in that controlled switch circuit (DR ₁), (DR ₂) can be the SCR control circuit.

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