CN2867480Y

CN2867480Y - Intelligent door and window magnetic induction projector

Info

Publication number: CN2867480Y
Application number: CN 200520140568
Authority: CN
Inventors: 刘正高
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-31
Filing date: 2005-12-31
Publication date: 2007-02-07
Anticipated expiration: 2015-12-31

Abstract

The utility model relates to an intelligent magnetic induction transmitter for door and window, wherein the magnet is disposed at one side of a normally opened reed switch, the output thereof is connected to a trigger circuit, the output of the trigger circuit is connected to a coder; the output of the coder is connected to a transmitting circuit, the normally opened reed switch transmits high-level signal to the trigger circuit immediately after departure of the magnet from the normally opened reed switch, the trigger circuit transmitter the instantaneously generated high-level signal to the coder; the coder transmitters its code to the transmitting circuit, and then the transmitting circuit transmitter outside via its antennae. The add of the trigger circuit makes the standby current to decrease to 0.1-0.3 muA, and the signal is only transmitted when opening door and window, so that the electricity energy is saved, the battery does not to be frequently replaced, and the switch is omitted.

Description

A kind of intelligent door and window magnetic strength transmitter

Technical field

The utility model relates to a kind of intelligent door and window magnetic strength transmitter.

Background technology

Door and window magnetic strength transmitter is a requisite ingredient in the alarm, it is installed on the door and window, when if the thief opens door or window, it is dealt into the password of self on the main frame, then main frame is reported to the police, magnetic strength transmitter on the door and window is the first road barrier that stops theft as can be seen, so the function of product will be directly connected to your property and life.If any the place that the people often walks about, the bedroom of bad installation infrared probe, it is your unique defender.

Present door and window magnetic strength transmitter, form by magnetic strength device (tongue tube), scrambler, radiating circuit, switch, antenna, if when opening door and window, the high level signal that the magnetic strength device is sensed is sent on scrambler and the radiating circuit, main frame is reported to the police, when closing, need close the doors and windows or close the switch on the magnetic strength transmitter.

When the owner of installation alarm opens door and window, at first to close the switch on the magnetic strength transmitter, if consumption is very big, can make troubles to owner, if forget the switch of closing on the magnetic strength transmitter, transmitter constantly transmits, make running down of battery, and lose warning function.And standby current big (100 μ A～500 μ A).Result from existing domestic and international patent inquiry does not see the intelligent door and window magnetic strength transmitter that has automatic pass to open function.

Summary of the invention

The purpose of this utility model is to provide a kind of intelligent door and window magnetic strength transmitter, has increased trigger circuit, makes standby current be reduced to 0.1～0.3 μ A; opening door and window moment transmits, and does not signal when closing the doors and windows, so can save electric energy; need not often change battery, save switch.

According to design proposal provided by the utility model, magnet is positioned at a side of often opening tongue tube, the output of often opening tongue tube is connected with trigger circuit, the output of trigger circuit is connected with scrambler, leave the moment of often opening tongue tube at magnet, send high level signal by often opening tongue tube, give trigger circuit, the high level signal that is produced moment by trigger circuit is given scrambler, the output of scrambler is connected with radiating circuit, scrambler is given radiating circuit with the coding of self after receiving the high level signal of moment, outwards sent by its antenna by radiating circuit.

Characteristics of the present utility model are: saves energy, and intellectuality is without owner's switch magnetic strength transmitter; Owing to increased trigger circuit, make standby current be reduced to 0.1～0.3 μ A, moment is transmitted coded signal when opening door and window, does not transmit coded signal when closing the doors and windows, and has saved electric energy, saves switch.

Description of drawings

Fig. 1 is a circuit block diagram of the present utility model.

Signal graph when Fig. 2 works for each module.

Fig. 3 is a wiring diagram of the present utility model.

Embodiment

Among Fig. 1, when magnet leaves magnetic strength device (often opening tongue tube), send a high level signal to trigger circuit, transmit the high level signal of a moment by trigger circuit and give scrambler, scrambler is under the effect of high level, send the password of self to radiating circuit, radiating circuit produces the high-frequency signal that has password to be launched by antenna, and pilot lamp is also once bright.Magnet send a low level signal to trigger circuit during near magnetic strength device (often opening tongue tube), the trigger circuit no-output, and the coding circuit no-output, the radiating circuit no-output, pilot lamp does not work.

In conjunction with Fig. 1,3, trigger circuit are formed by connecting by diode Q9, triode Q1～4, capacitor C 3, resistance R 1, R6; Scrambler is formed by connecting by integrated circuit (IC) (model EV1527), resistance R 2～3, light emitting diode Q7, diode Q8, capacitor C 4; The magnetic strength device is promptly often opened tongue tube K1; Radiating circuit is made up of inductance L and the antenna T on triode Q5～6, sound surface resonance device J, capacitor C 1～2, resistance R 4～5, light emitting diode Q7～8, the P.e.c..

During work: 1, when magnet leaves magnetic strength device (often opening tongue tube), K1 disconnects, the electric current of power supply VCC flows to Q1 by R1, the base stage of Q2, Q2 ends, the Q1 conducting, power supply VCC charges to C3 by Q1, because Q9 ends, electric current to the C3 charging flows back to power cathode through the base stage of R6 and Q3, and at this moment the base stage level of the voltage at R6 two ends and Q3 drops to zero from mxm., and the voltage at C3 two ends is from the VCC that is raised to above freezing, the time that the base stage high level of Q3 continues is by C3 and R6 decision, when the base stage of Q3 is high level, Q3 conducting, Q4 conducting, the conducting of Q4 is to EV1527 and Q7, Q8 powers up, Q7 is luminous, and EV1527 is with the password process R4 of self, Q5 is modulated on the high frequency oscillator, by Q6, C2, J, R5, C1, the high-frequency signal that the high frequency oscillator that L forms will have password sends out through antenna.Resistance R 2, R3 are the auxiliary circuits of scrambler EV1527, and C4 is a high-frequency fevering decoupling circuit.

When (often opening tongue tube) when 2, magnet is near the magnetic strength device, the K1 conducting, the Q2 conducting, the last voltage near VCC of C3 bleeds off through Q2, Q9, the R6 of conducting, and in order to charging next time, Q3 ends, and Q4 ends, and EV1527 does not have password output, and no high-frequency current is launched.

During use, with double faced adhesive tape magnet is bonded on the door and window, remainder places in the housing, and sticks on the window frame, opens main frame, and when at this moment opening door and window, magnet is separated from each other with door and window and window frame, will instantaneous trigger intelligent door and window magnetic strength transmitter, and main frame is reported to the police.

Claims

1, a kind of intelligent door and window magnetic strength transmitter, it is characterized in that: magnet is positioned at a side of often opening tongue tube, the output of often opening tongue tube is connected with trigger circuit, the output of trigger circuit is connected with scrambler, leave the moment of often opening tongue tube at magnet, send high storage battery signal by often opening tongue tube, give trigger circuit, the high electricity frequency signal that is produced moment by trigger circuit is given scrambler, the output of scrambler is connected with radiating circuit, scrambler is given radiating circuit with the coding of self after receiving the high electricity frequency signal of moment, outwards sent by its antenna by radiating circuit.