CN2202073Y - Motorcycle alarm against thief - Google Patents

Abstract

The utility model relates to the technique of vehicle fittings for vehicle theft protection. The alarm device of a motorcycle comprises a sensor Ho, a decoding recognition circuit, a voltage comparator attached to the decoding recognition circuit, a strobe gate circuit attached to the voltage comparator, a selective amplifier which is attached to a sensor and is connected with the strobe gate circuit, a drive circuit attached to the strobe gate circuit, and a load attached to the drive circuit. The utility model has the advantages of small volume, simple structure, and low power consumption; the alarm device of a motorcycle has protection function when powered down, and is not easy to damage.

Description

Motorcycle alarm against thief

The utility model belongs to the technical field of the vehicle body fittings that Theft-proof for vehicle uses.

The burglar alarm of using on the present motor bike; it is several to shake control type, keyboard coding type and lock-controlled switch type, but the volume that the burglar alarm of these several models has is big, power consumption is many, price is expensive, the no power-down protection that has, destroys easily; the easy releasing that has is installed complicated.

The purpose of this utility model provides that a kind of volume is little, power consumptive province, survivable releasing, power-down protection is arranged, low-cost burglar alarm.

This motorcycle anti-theft alarm comprises sensor H _D, the decoding identification circuit, the decoding identification circuit has two mouths, and the voltage signal of two mouths output is delivered to the window type voltage comparator, and the mouth of voltage comparator is connected to an input end of gated circuit again; Described sensor H _DMouth be connected to an input end of frequency selecting amplifier, another input end of frequency selecting amplifier is connected on the motor bike electric lock K, the mouth of frequency selecting amplifier is connected with another input end of gated circuit, the mouth of gated circuit is connected to driving circuit, and two mouths of defeated moving circuit are received in the load respectively.

Because this burglar alarm has only sensor, decoding identification circuit, voltage comparator, gated circuit and frequency selecting amplifier and driving circuit and load; so it is simple in structure, volume is little, the power consumptive province, power-down protection is arranged; be not easy to destroy and remove, easy for installation.

Accompanying drawing shows embodiment of the present utility model, wherein:

Figure 1 shows that the block scheme of burglar alarm;

Figure 2 shows that the schematic circuit diagram of burglar alarm.

Motorcycle anti-theft alarm as shown in the figure, comprise decoding identification circuit (1), be connected on the window type voltage comparator (2) of decoding identification circuit (1) mouth, one input end is connected on the warning gated circuit (3) of voltage comparator (2) mouth, be connected on the driving circuit (5) of gated circuit (3) mouth, be connected on the load (6) of driving circuit (5) mouth, also comprise vibrations, rolling dynamic sensor H _D, be connected on sensor H _DOn selective frequency amplifier circuit (4), the mouth of selective frequency amplifier circuit (4) is connected to another input end of warning gated circuit (3).Decoding identification circuit (1) comprises series connected resistance R ₁, R ₁₆, be connected on resistance R ₁₆And the diode D between ground ₃, and resistance R ₁₆With diode D ₃Form cipher key, with resistance R ₁, R ₁₆Series connected resistance R in parallel ₂, R ₃Window type voltage comparator (2) comprises differential operational amplifier IC ₁, normal phase input end and amplifier IC ₁The differential operational amplifier IC of inverting input short circuit ₂, op amp IC ₁, IC ₂Mouth be connected on the diode D of anode short circuit separately ₁, D ₂Negative terminal on.Op amp IC ₁Normal phase input end and op amp IC ₂Inverting input be connected on series connected resistance R ₂, R ₃Between, the other end separately is connected on series connected resistance R ₁, R ₁₆Between.Gated circuit (3) comprises that two input end short circuits are connected on diode D ₁, D ₂Anode with not gate IC ₅, base stage is connected on and not gate IC ₅The aerotron BG of mouth ₁, collecting electrode is connected on aerotron BG ₁Aerotron BG on the emitter ₂Frequency selecting amplifier (4) comprises that inverting input is connected on vibrations, rolling dynamic sensor H _DOn integral operation amplifier IC ₃, normal phase input end is connected on amplifier IC ₃Adder operational amplifier IC on the mouth ₄, amplifier IC ₄Normal phase input end also pass through resistance R ₁₄Receive on the motor bike electric lock K, base stage is connected on amplifier IC ₄The aerotron BG of mouth ₃, be connected on aerotron BG ₃Capacitor C between emitter and ground ₃Aerotron BG ₃Emitter pass through resistance R ₁0 is connected to an input end aerotron BG of gated circuit (3) ₂Base stage on.Driving circuit (5) comprises that two input end short circuits are connected on aerotron BG ₁On the collecting electrode with not gate IC ₈, base stage is connected on and not gate IC ₈The aerotron BG of mouth ₄, an input end is connected on and not gate IC ₈Integrated-circuit multivibrator on the input end, base stage are connected on the aerotron BG of integrated circuit multiterminal oscillator output end ₅Integrated-circuit multivibrator comprises an input end and and not gate IC ₈Two input end bonded assemblys and not gate IC ₆, two input ends are connected on and not gate IC ₆Mouth with not gate IC ₇, be connected on and not gate IC ₆Series connected resistance R on another input end and the mouth ₆, R ₇, be connected on resistance R ₆, R ₇Between and and not gate IC ₇Capacitor C on the mouth ₄And not gate IC ₆Mouth and aerotron BG ₅Base stage connect.Load (6) comprises and is connected in aerotron BG ₄Relay J on the collecting electrode ₁With diode D ₄, and be connected in aerotron BG ₅Relay J on the collecting electrode ₂With diode D ₅, be connected on relay J respectively ₁Contact J _1-1, J _1-2On high-tension coil L and loudspeaker, be connected on relay J respectively ₂Contact J _2-1, J _2-2On alarm lamp L ₁, L ₂Op amp IC ₁, IC ₂, IC ₃, IC ₄Be LM324 type and not gate IC ₅-IC ₈With four or two joint denial gates.

In this annunciator, resistance R ₁₆With diode D ₆Form cipher key, after motor bike is parked, pull up this cipher key, then the A point is high potential, and resistance R ₂, R ₃Between the B point then be resistance R ₃Dividing potential drop gained voltage, A point current potential is higher than B point current potential, then op amp IC ₁Be output as active potential, diode D ₁Conducting and not gate IC ₅Be output as high potential, then aerotron BG ₁Place's conducting state, reporting to the police is provided with, if shake, shake dynamic sensor H _DAlso there is signal to produce, then integral operation amplifier IC ₃The output high potential adds to adder operational amplifier IC ₄Normal phase input end, adder operational amplifier IC ₄The output high potential is delivered to aerotron BG ₃Base stage, aerotron BG ₃Capacitor C is passed through in conducting ₃After the delay, make aerotron BG ₂Conducting, this moment and not gate IC ₃The output high potential, aerotron BG ₄Conducting, and integrated-circuit multivibrator starting of oscillation, output signal, aerotron BG ₅Conducting, relay J ₁, J ₂The motorcycle ignition coil power is cut off in work, connects alarming horn and reports to the police with the door light modulation.If under the condition that is provided with of reporting to the police, open electric lock K, then adder operational amplifier IC ₄Normal phase input end add high potential, then moving, the rolling dynamic sensor of heel-jar produces signal and equally cuts off the motorcycle ignition coil power, reports to the police simultaneously.

Claims (4)

1, a kind of motorcycle anti-theft alarm comprises sensor H _DWith decoding identification circuit (1), it is characterized in that described decoding identification circuit (1) has two mouths, the voltage signal of two mouths output is delivered to window type voltage comparator (2), and the mouth of voltage comparator (2) is connected to an input end of gated circuit (3) again; Described sensor H _DMouth be connected to an input end of frequency selecting amplifier (4), another input end of frequency selecting amplifier (4) is connected on the motor bike electric lock K, the mouth of frequency selecting amplifier (4) is connected with another input end of gated circuit (3), the mouth of gated circuit (3) is connected to driving circuit (5), and two mouths of driving circuit (5) are received respectively in the load (6).

2, motorcycle anti-theft alarm according to claim 1 is characterized in that frequency selecting amplifier (4) comprises integral operation amplifier IC ₃, input end is connected on op amp IC ₃The adder operational amplifier IC of mouth ₄, amplifier IC ₄Normal phase input end also pass through resistance R ₁₄Receive on the motor bike electric lock K, base stage is connected on op amp IC ₄The aerotron BG of mouth ₃, be connected on aerotron BG ₃Capacitor C between emitter and ground ₃

3, motorcycle anti-theft alarm according to claim 1 is characterized in that gated circuit (3) comprises and not gate IC ₅, base stage is connected on and not gate IC ₅The aerotron BG of mouth ₁, collecting electrode is connected on aerotron BG ₁Aerotron BG on the emitter ₂

4, motorcycle anti-theft alarm according to claim 1 is characterized in that driving circuit (5) comprises and not gate IC ₈, base stage is connected on and not gate IC ₈On aerotron BG ₄, an input end and and not gate IC ₈The integrated-circuit multivibrator of short circuit, base stage are connected on the aerotron BG of multi-vibrator mouth ₅