CN202389341U - Simple ultrasonic anti-theft alarm - Google Patents

Abstract

The utility model discloses a simple ultrasonic anti-theft alarm, which comprises a micro control unit, an ultrasonic detection module, a vehicle detection module and an alarm output module, wherein the ultrasonic detection module, the vehicle detection module and the alarm output module are electronically connected with the micro control unit, the ultrasonic detection module includes an ultrasonic transmission circuit electrically connected with the micro control unit, a transmitting probe connected with the ultrasonic transmission circuit, an ultrasonic receiving circuit electrically connected with the micro control unit and a receiving probe connected with the ultrasonic receiving circuit, the alarm output module includes an alarming horn drive circuit electrically connected with the micro control unit, a horn connected with the alarming born drive circuit, an oil locking circuit connected with the micro control unit and an oil circuit connected with the oil locking circuit, and the vehicle detection module includes a self-adaptive cruise control detection circuit electrically connected with the micro control unit. The simple ultrasonic anti-theft alarm has the advantage of being capable of effectively monitoring states of a vehicle door or vehicle windows so as to prevent the vehicle from suffering an illegal violation.

Description

Simple and easy Ultrasonic Intruder Alarm

Technical field

The utility model relates to car alarm, relates in particular to a kind of simple and easy Ultrasonic Intruder Alarm.

Background technology

Present antitheft system for vehicle suffers that with car key, car door illegal unlatching is basis for estimation and carries out anti-theft warning.Yet for new crime gimmick, general antitheft system for vehicle can't prevent effectively that criminal from invading vehicle, and for example glass for vehicle window is broken etc.General antitheft system for vehicle often can't be detected this type of invasion, so that can't trigger guard against theft and alarm system in real time and notify the car owner, causes the loss of article on the car.Therefore, need a kind of antitheft system for vehicle, can detect car inside and invaded, and report to the police and the circular car owner, this will help to reduce the stolen risk of vehicle, and improve the fiduciary level of anti-theft system.

The utility model content

The technical matters that the utility model will solve is, to the above-mentioned defective of prior art, a kind of simple and easy Ultrasonic Intruder Alarm is provided.

The utility model solves the technical scheme that its technical matters adopted: a kind of simple and easy Ultrasonic Intruder Alarm; It comprises micro-control unit and the ultrasonic fault detection module, detecting test of vehicle module and the alarm output module that are electrically connected with said micro-control unit; The ultrasonic fault detection module comprise the ultrasonic transmit circuit that is electrically connected with micro-control unit and with this ultrasonic transmit circuit bonded assembly transmitting probe, the super sonic acceptor circuit that is electrically connected with micro-control unit and with this super sonic acceptor circuit bonded assembly receiving transducer; The alarm output module comprises the alarming horn driving circuit that is electrically connected with micro-control unit and with these alarming horn driving circuit bonded assembly loudspeaker, lock oily circuit and lock oily circuit bonded assembly oil circuit with this with the micro-control unit bonded assembly, the alarm output module comprises cowl lamp signal deteching circuit and the adaptive cruise control detection circuit that is electrically connected with micro-control unit.

In the described simple and easy Ultrasonic Intruder Alarm of the utility model, the ultrasonic fault detection module is at least one group, and the ultrasonic fault detection module has transmitting probe and receiving transducer, and the transmitting probe and the receiving transducer of ultrasonic fault detection module relatively are arranged in the car.

In the described simple and easy Ultrasonic Intruder Alarm of the utility model, micro-control unit is the STM32F101C8 chip.

The beneficial effect of the utility model is; By ultrasonic detector, it can detect the situation of automotive interior object of which movement effectively, and judges whether car door is destroyed or open etc.; When car door is destroyed or is illegally opened; It can detect this signal, and gives the alarm, thereby reduces car owner's loss effectively.

Description of drawings

To combine accompanying drawing and embodiment that the simple and easy Ultrasonic Intruder Alarm of the utility model is described further below, in the accompanying drawing:

Fig. 1 is the logical organization block diagram of the simple and easy Ultrasonic Intruder Alarm embodiment of the utility model;

Fig. 2 be have the people into the car, the change of voltage scheme drawing when opening car door or breaking vehicle window;

Fig. 3 is the realization flow figure of system of the simple and easy Ultrasonic Intruder Alarm of the utility model;

Fig. 4 is the alert decision flow chart of the simple and easy Ultrasonic Intruder Alarm of the utility model;

Fig. 5 is that the simple and easy Ultrasonic Intruder Alarm embodiment of the utility model is installed on the scheme drawing in the car.

The specific embodiment

The principle of the simple and easy Ultrasonic Intruder Alarm of the utility model is described in conjunction with Fig. 1 to Fig. 5.In Fig. 1; With micro-control unit (MCU) 101 be the STM32F101C8 chip; The ultrasonic fault detection module is made up of transmitter unit and receiving element; Transmitter unit produces the ultrasonic transmit circuit 102 of ultrasonic emitting signal by being used to of being electrically connected with MCU101 and the transmitting probe 103 that is electrically connected with ultrasonic transmit circuit 102 is formed, and receiving element receives super sonic by being used to of being electrically connected with MCU101 and forms with receiving transducer 105 with the super sonic acceptor circuit 104 of environmental change in the inspection vehicle.The detecting test of vehicle module is made up of cowl lamp signal deteching circuit of the signal detection of setting up defences and withdraw a garrison that is used for the vehicle cowl lamp 107 and the vehicle ACC signal deteching circuit 106 that is used to detect vehicle adaptive cruise control (ACC) signal.The alarm output module comprise the alarming horn driving circuit 108 that is electrically connected with micro-control unit 101 and form the audio alarm unit with alarming horn driving circuit bonded assembly loudspeaker 109 and the lock oil circuit 110 that is electrically connected with micro-control unit 101 and with oily circuit bonded assembly automobile oil circuit 111 compositions of lock.

Forward Fig. 2 to, super sonic alert detecting module is gathered level signal (Vs) by the AD input channel of this port after receiving the alert signal; Set and gather threshold values (Vt) and sampling time; In the sampling time, if threshold values Vs＜Vt, then judging has the super sonic alert to take place.

System's realization flow of the simple and easy Ultrasonic Intruder Alarm of the utility model is described in conjunction with Fig. 3.Behind the alarm work, at first detect the signal of whether setting up defences, if driver and crew are the state of setting up defences with vehicle set; Then this annunciator gets into the super sonic state of alert, and ultrasonic transmitting element and receiving element are started working, and whether the time detecting of each setting has alert to take place; If do not have alert to take place then return again and detect, whether if alert takes place, then detecting the ACC signal is ON; Be low level state,, then return and detect the super sonic alert again if be in this state; Otherwise micro-control unit 101 drives the alarming horn circuit and produces alarm, and blockade automobile oil circuit can not start automobile.Each alert produces continuous 3 times and pipes, and delays time 5 seconds at interval 25 seconds at every turn.Under alarm condition, if disarm, the end of then once reporting to the police, otherwise, return and drive the warning circuit warning, and block the automobile oil circuit, up to all clear.

If being the simple and easy Ultrasonic Intruder Alarm of the utility model, Fig. 4 judges the diagram of circuit that alert takes place.In the drawings, simple and easy Ultrasonic Intruder Alarm has taken place to have no progeny in the triggering of super sonic alert, and whether system detects ADC (A and D converter) sampling threshold values less than the threshold values of setting; If whether the sampling threshold values less than the threshold values of setting, then continues to judge the ADC sampling time and reaches, if the sampling time arrives; Judge that then the super sonic alert takes place, give the alarm and lock the automobile oil circuit, after driver and crew sound all clear; It is super sonic alert down trigger that system will be provided with alarm state subsequently, withdraws from circulation.In this flow process, if the ADC sampled value is not less than setting value, then getting into and setting the super sonic alert is down trigger, withdraws from, if the ADC sampling time is less than, then withdraws from circulation.

Fig. 5 is that the simple and easy Ultrasonic Intruder Alarm of the utility model is installed in an embodiment with automobile of four car doors; Transmitting probe 103 is installed in automobile inner side respectively accordingly with receiving transducer 105, is received probe 105 by transmitting probe 103 ultrasonic waves transmitted and receives.After locking car driver and crew, in the car osed top space, constant basically to the hypracoustic reflection; The super sonic magnitude of voltage that this moment, receiving transducer received is a basic fixed; But when car door or vehicle window are opened, changed the hypracoustic reflective distance, produced an abnormal signal and give MCU.The installation site that need to prove transmitting probe and receiving transducer can change according to actual needs, and transmitting probe and receiving transducer can be positioned at the same side of car, and this figure just provides a kind of example.

Embodiment is installed on simple and easy Ultrasonic Intruder Alarm in the automobile, and after driver and crew left car, system got into the state of alert of deploying troops on garrison duty through detecting the cowl lamp signal of setting up defences, and in the state of alert of deploying troops on garrison duty, opens ultrasonic fault detection.If there is alert to take place, system drives alarm call and blocks the automobile oil circuit through drive circuit of loudspeaker, and automobile can't normally be started.Only detect cowl lamp and withdraw a garrison behind the signal, the contact state of alert just can normally start vehicle after untiing oil circuit.In the state of alert, auxiliary detection ACC state, under the state of deploying troops on garrison duty, if the ACC signal is arranged, the then not processing and detecting alarm signal of arriving.In the control of concrete system, the detection of cowl lamp signal detects with the input capture down trigger, and super sonic receives and adopts external interrupt detection trigger, ACC signal to adopt common IO input to detect.The signal of setting up defences of cowl lamp is an impulse singla that pulsewidth is 500-600ms; Detect the trigger condition that this pulse is deployed troops on garrison duty and guarded against as entering; The signal of withdrawing a garrison of cowl lamp is 2 impulse singlas that pulsewidth is 500-600ms, detects to remove warning behind these two signals and trigger.Design ACC signal is low level state during for ON, and the ACC signal is high level state during for OFF.

When acquired signal was arrived in ultrasonic testing less than the sampling threshold values, then judging had the super sonic alert to take place.System then detects the ACC signal, if the ACC signal is OFF, then starts the alarming horn driving circuit alarming horn is piped, and block oil circuit prevention vehicle launch, and each alert pipes loudspeaker continuously No. 3 times, pipes 5 seconds at interval 25 seconds at every turn.The automobile oil circuit is locked, and sounds all clear up to driver and crew.

Certainly; The present invention also has numerous embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art can make various corresponding changes or variation according to the present invention, any modification of in every case within the present invention's spirit and principle, being done, are equal to replacement, improvement, all should be included within protection scope of the present invention.

Claims (3)

1. simple and easy Ultrasonic Intruder Alarm; It is characterized in that; It comprises micro-control unit (101) and the ultrasonic fault detection module (102,103,104,105), detecting test of vehicle module (106,107) and the alarm output module (108,109,110,111) that are electrically connected with said micro-control unit (101); Said ultrasonic fault detection module (102,103,104,105) comprise the ultrasonic transmit circuit (102) that is electrically connected with micro-control unit (101) and with this ultrasonic transmit circuit (102) bonded assembly transmitting probe (103), the super sonic acceptor circuit (104) that is electrically connected with micro-control unit (101) and with this super sonic acceptor circuit (104) bonded assembly receiving transducer (105); Said alarm output module (108,109,110,111) comprises the alarming horn driving circuit (108) that is electrically connected with said micro-control unit (101) and with these alarming horn driving circuit (108) bonded assembly loudspeaker (109), lock oily circuit (110) and lock oily circuit (110) bonded assembly oil circuit (111) with this with said micro-control unit (101) bonded assembly, said detecting test of vehicle module (106,107) comprises cowl lamp signal deteching circuit (107) and the adaptive cruise control detection circuit (106) that is electrically connected with said micro-control unit.

2. simple and easy Ultrasonic Intruder Alarm according to claim 1 is characterized in that, said ultrasonic fault detection module is at least one group, and transmitting probe of said ultrasonic fault detection module (103) and receiving transducer (105) are arranged in the car.

3. simple and easy Ultrasonic Intruder Alarm according to claim 1 and 2 is characterized in that, said micro-control unit (101) is the STM32F101C8 chip.

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