CN2825378Y - Automotive antitheft alarm - Google Patents

Abstract

The utility model relates to an automotive anti-theft alarm which mainly comprises a single chip computer, a receiving transmitter, a transistor, a relay, a speech slice, a diode, an instruction key, a resistor and a stabilized voltage supply. The automotive anti-theft alarm has simple structure, the mutual influence of elements of each part in a circuit is little, therefore the sensitivity of the alarm for transmitting a signal is improved. In addition, the number of control circuits in the alarm can be adjusted at any time according to the number of automotive mounted devices arranged at different positions in an automobile, which can lead each part of the automobile to be fully protected. The usage is convenient and flexible.

Description

Automobile is stolen annunciator

Technical field

The utility model relates to a kind of automobile and is stolen annunciator, particularly relates to a kind of portable remote-control car and is stolen annunciator.

Background technology

The function of car alarm generally is when the car clout behavior takes place, sensor-triggered PA-system in the Car Burglar Alarm, sound with burst frightens the thief away, existing car alarm comprises car-mounted device and remote control equipment (RCE) mostly, and remote control equipment (RCE) generally has structures such as sensor, binary pair, PA-system and controller, this class remote control equipment (RCE) has following shortcoming: the inner structure design is complicated, therefore, mutual disturbing influence between the appliance component is big in use, causes remote control equipment (RCE) poor sensitivity and the insecure shortcoming of performance to occur easily.

The utility model content

The purpose of this utility model is to overcome the defective of prior art, provides a kind of simple in structure, highly sensitive and be convenient to the automobile that the driver carries and stolen annunciator.

The structure that this automobile is stolen annunciator mainly comprises micro controller system, receives projector, aerotron, relay, voice sheet, diode, instruction key, resistance and constant voltage power suspply.

Described constant voltage power suspply adopts traditional structure, general its circuit structure comprises insurance, voltage transformer, diode bridge rectifier, integrated voltage stabilizing element and filter capacitor, export direct current 5V in use, then through diode output VCC, in power circuit, also be provided with chargeable battery, as backup power.

Described micro controller system adopts the AT89C2051 model, and the erasable EPROM space of removing of 2K is arranged in this micro controller system, and the ram space of 128K byte and two timer/counters also have 15 input/output lines, and 1 pin of chip is a reset terminal, and is external by diode D ₅, resistance R ₇And capacitor C ₁The reset circuit that constitutes.2 pin of micro controller system pass through resistance R ₅Connect aerotron Q ₃Base stage, aerotron Q ₃Emitter connect relay J ₁With diode D ₃, and then connect voice sheet HC ₁An end, HC ₁The other end by control key K ₃Connect VCC.Aerotron Q ₃, relay J ₁, diode D ₃, voice sheet HC ₁And resistance R ₅Constitute one group of control circuit, it is corresponding to the car-mounted device that is installed on position, a place on the self-propelled vehicle, and the number of the car-mounted device that diverse location is installed on the self-propelled vehicle is stolen the number of the control circuit of annunciator corresponding to this automobile.

Described instruction button comprises warning key K ₁Conciliate alert key K ₂, warning key K ₁Connect 8 pin of micro controller system input end, separate alert key K ₂9 pin that connect the micro controller system input end, warning key K ₁Also by diode D ₁With aerotron Q ₁Base stage link to each other, separate alert key K ₂Also by diode D ₂With aerotron Q ₁Base stage link to each other, at aerotron Q ₁Base stage and collecting electrode between connect resistance R ₁, aerotron Q ₁Emitter pass through resistance R ₂Connect aerotron Q ₂Base stage to constitute driving circuit, aerotron Q ₂Collecting electrode pass through resistance R ₄Connect VCC, at aerotron Q ₂Base stage and emitter between connect resistance R ₃

Described reception projector has the function of decoding of receiving and launching code, its structure is common in the market structure, 1 pin and 2 pin that receive projector are the mouth of launching code, it connects 14 pin and 15 pin of micro controller system, receive 3 pin of projector and the mouth that 4 pin are deciphered for reception, it connects 16 pin and 17 pin of micro controller system.

Automobile of the present utility model is stolen annunciator and is had the following advantages: because its circuit structure is simple, make that influencing each other of each several part element in the circuit is very little, thereby improved the sensitivity of annunciator transmission signals, in addition, also can adjust the number of this annunciator inner control circuit according to the car-mounted device number that is installed in diverse location in the self-propelled vehicle at any time, so that it is the self-propelled vehicle each several part is subjected to comprehensive defence, very easy to use so flexible.

Description of drawings

With the specific embodiment automobile of the present utility model is stolen annunciator with reference to the accompanying drawings and done explanation in further detail.

Fig. 1 is the schematic circuit diagram that automobile of the present utility model is stolen annunciator;

The specific embodiment

The structure that automobile shown in Figure 1 is stolen annunciator has adopted two groups of control circuits, and with the corresponding car-mounted device that is installed in automobile driving cabin and the boot respectively, as shown in the figure, this annunciator comprises: single chip computer AT 89C2051, this micro controller system is external by diode D ₅, resistance R ₇And capacitor C ₁The reset circuit that constitutes.2 pin of micro controller system pass through resistance R ₅Connect aerotron Q ₃Base stage, aerotron Q ₃Emitter connect relay J ₁With diode D ₃, and then connect voice sheet HC ₁An end, HC ₁The other end by control key K ₃Connect VCC.3 pin of micro controller system pass through resistance R ₆Connect aerotron Q ₄Base stage, aerotron Q ₄Emitter connect relay J ₂With diode D ₄, and then connect voice sheet HC ₂An end, HC ₂The other end by control key K ₄Connect VCC.Aerotron Q ₃, relay J ₁, diode D ₃, voice sheet HC ₁And resistance R ₅Constitute one group of control circuit, aerotron Q ₄, relay J ₂, diode D ₄, voice sheet HC ₂And resistance R ₆Constitute other one group of control circuit.Warning key K ₁Connect 8 pin of micro controller system input end, separate alert key K ₂9 pin that connect the micro controller system input end, warning key K ₁Also by diode D ₁With aerotron Q ₁Base stage link to each other, separate alert key K ₂Also by diode D ₂With aerotron Q ₁Base stage link to each other, at aerotron Q ₁Base stage and collecting electrode between connect resistance R ₁, aerotron Q ₁Emitter pass through resistance R ₂Connect aerotron Q ₂Base stage to constitute driving circuit, aerotron Q ₂Collecting electrode pass through resistance R ₄Connect VCC, at aerotron Q ₂Base stage and emitter between connect resistance R ₃1 pin and 2 pin that receive projector are the mouth of launching code, and it connects 14 pin and 15 pin of micro controller system, and 3 pin and 4 pin that receive projector are the mouth that receives decoding, and it connects 16 pin and 17 pin of micro controller system.

It is as follows that this automobile is stolen the working process of annunciator: when pressing warning key K ₁The time, the two ends of this warning key are ground connection all, and 8 pin that therefore are connected to micro controller system are low level, and micro controller system is through logic determines, and making 2 pin of mouth and 3 pin is high level, at this moment, aerotron Q ₃And Q ₄Conducting, and drive relay J ₁And J ₂Adhesive once, represent that this car received early warning signal, enter alert status, at this moment, if the generator motor-car is forced open the door, igniting etc. stolen feelings, 3 pin and 4 pin that receive projector will be received the decoding alerting signal of sending from car-mounted device, and this signal enters micro controller system by bonded assembly 16 pin, 17 pin, through the logic determines of micro controller system, with drive controlling key K ₃And K ₄Closure, thus make voice sheet HC ₁And HC ₂Send very brief audible alarm, alert after several seconds as if not understanding, 14 pin of micro controller system, 15 pin outupt coded signal simultaneously drive reception projector transmit coded signals to 1 pin that receives projector and 2 pin, the signal of emission will be exported the code signal of this self-propelled vehicle, as long as do not understand alert, this signal will constantly be launched, even this vehicle ceaselessly travels, its wireless alarm signal also can be received by reception site on the way, and be forwarded to command centre's (as 110 alarm centers), signal is received at the center, just can take an immediate action according to the coding of signal.Automobile of the present utility model is stolen the function of each several part element and the working process of annunciator and is gone in the micro controller system by the programming programming, so that come the work of control circuit each several part.

Above-described only is preferred implementation of the present utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.

Claims (5)

1. an automobile is stolen annunciator, it is characterized in that: comprise micro controller system, receive projector, aerotron Q ₁, Q ₂, Q ₃, Q ₄, relay J ₁, J ₂, voice sheet HC ₁, HC ₂, diode D ₁, D ₂, D ₃, D ₄, D ₅, capacitor C ₁, warning key K ₁, separate alert key K ₂, resistance R ₁, R ₂, R ₃, R ₄, R ₅, R ₆, R ₇And constant voltage power suspply.

2. automobile according to claim 1 is stolen annunciator, it is characterized in that: described micro controller system adopts the AT89C2051 model, function and the working process that automobile is stolen annunciator each several part element gone in the inside programming programming, and 1 pin of this micro controller system is a reset terminal, and be external by diode D ₅, resistance R ₇And capacitor C ₁The reset circuit that constitutes, 2 pin of micro controller system pass through resistance R ₅Connect aerotron Q ₃Base stage, aerotron Q ₃Emitter connect relay J ₁With diode D ₃, and then connect voice sheet HC ₁An end, HC ₁The other end by control key K ₃Connect VCC, aerotron Q ₃, relay J ₁, diode D ₃, voice sheet HC ₁And resistance R ₅Constitute one group of control circuit.

3. automobile according to claim 2 is stolen annunciator, it is characterized in that: the number of described control circuit is corresponding to the number of the car-mounted device of diverse location installation on the self-propelled vehicle.

4. automobile according to claim 3 is stolen annunciator, it is characterized in that: described warning key K ₁Connect 8 pin of micro controller system input end, separate alert key K ₂9 pin that connect the micro controller system input end, warning key K ₁Also by diode D ₁With aerotron Q ₁Base stage link to each other, separate alert key K ₂Also by diode D ₂With aerotron Q ₁Base stage link to each other, at aerotron Q ₁Base stage and collecting electrode between connect resistance R ₁, aerotron Q ₁Emitter pass through resistance R ₂Connect aerotron Q ₂Base stage to constitute driving circuit, aerotron Q ₂Collecting electrode pass through resistance R ₄Connect VCC, at aerotron Q ₂Base stage and emitter between connect resistance R ₃

5. automobile according to claim 4 is stolen annunciator, it is characterized in that: described reception projector has 4 pin, wherein 1 pin and 2 pin are the mouth of launching code, it connects 14 pin and 15 pin of micro controller system, receive 3 pin of projector and the mouth that 4 pin are deciphered for reception, it connects 16 pin and 17 pin of micro controller system.

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