CN104149737A - Anti-theft device for automobile - Google Patents
Anti-theft device for automobile Download PDFInfo
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- CN104149737A CN104149737A CN201410427633.0A CN201410427633A CN104149737A CN 104149737 A CN104149737 A CN 104149737A CN 201410427633 A CN201410427633 A CN 201410427633A CN 104149737 A CN104149737 A CN 104149737A
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Abstract
The invention discloses an anti-theft device for an automobile. The anti-theft device for the automobile comprises an infrared electronic lock circuit, a main controller circuit, a shaking detection circuit, a sound and light alarm circuit and a GSM short-message alarm circuit, wherein the infrared electronic lock circuit is connected with the main controller circuit, the main controller circuit is connected with the shaking detection circuit, the sound and light alarm circuit and the GSM short-message alarm circuit and comprises a main controller U1, a crystal oscillating circuit and a reset circuit, the shaking detection circuit comprises a shaking sensor and a comparator, the shaking sensor converts a shaking signal into a voltage signal through the comparator and is connected to the main controller, the infrared electronic lock circuit comprises an infrared receiving module, and an I/O interface of the infrared receiving module is connected to the external interrupt PIN 0 of the main controller. According to the anti-theft device for the automobile, whether the automobile shakes is monitored through the shaking sensor, so that whether an anti-theft alarm needs to be given is judged, both the traditional sound and light alarm method and the GSM remote wireless alarm method are adopted, and real-time, remote and wireless alarm is achieved in the true sense.
Description
Technical field
The present invention relates to a kind of alarms and security systems for automobiles.
Background technology
Automobile is stolen becomes one of higher criminal offence already, and the quantity of automobile is soaring year by year, and stolen quantity is also more and more.Automobile is stolen not only causes serious social danger, returns each family and brings heavy economic loss.Therefore, automobile burglar is the focus that each car owner is concerned about, car alarm just arises at the historic moment.But along with the development in epoch, robber driver's section of offender is more and more brilliant, in order to tackle robber driver's section of continuous upgrading, it is more and more higher that the anti-theft capability of car alarm is required.
Traditional burglar alarm has two kinds: one is mechanical, all belongs to mechanical type as steering-wheel lock, clutch lock etc., and it is mainly by locked the associated components of automobile, and in order to add robber's car resistance, this mechanical type is all only antitheftly not report to the police.Another kind is electronic type, is to utilize button or teleswitch to coordinate automobile circuit, and network type electron or power-supply system, realize anti-theft feature, can carry out sound and light warning simultaneously.But alarm distance is confined to the tens of rice of motor vehicle environment.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of alarms and security systems for automobiles.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: alarms and security systems for automobiles, comprises infrared exoelectron lock circuit, main controller circuit, shock detection circuit, sound light alarming circuit, GSM SMS alarm circuit; Infrared exoelectron lock circuit is connected with main controller circuit; Main controller circuit is connected with shock detection circuit, sound light alarming circuit, GSM SMS alarm circuit respectively.
As preferably, main controller circuit comprises master controller U1, crystal oscillating circuit and reset circuit;
Master controller U1 is 8 8-digit microcontrollers;
Crystal oscillating circuit by crystal oscillator X1 with capacitor C 3, C4 is in parallel forms, and is connected to crystal oscillator input XTAL1 and the crystal oscillator input XTAL2 pin of master controller U1, the other end of capacitor C 3, C4 all connects power cathode;
Reset circuit comprises capacitor C 2, resistance R 2, R5 and button RST_KEY; Resistance R 2 is connected with button RST_KEY, in parallel with capacitor C 2 again, the one end after parallel connection is connected to positive source, and the other end is connected to resistance R 5, resistance R 5 other ends are received power cathode, and between resistance R 2 and resistance R 5, pig-tail wire is connected to the RST pin of master controller U1.
As preferably, the model of 8 8-digit microcontroller U1 is STC89C52RC.
As preferably, shock detection circuit comprises shock sensor ZD, comparator U3A, resistance R 4, R10, R11, R14, R15, capacitor C 5, C6, variable rheostat R12, light-emitting diode D4, D5, diode D1, electromagnetic relay K1 and aerotron Q1; Shock sensor ZD is connected between the end of oppisite phase and power cathode of comparator U3A; The in-phase end of comparator U3A is connected to the sliding end of variable rheostat R12, and the end of oppisite phase of comparator U3A is connected to power cathode, and the mouth of comparator U3A is connected to the input and output pin P2.0 of master controller; Capacitor C 5 is connected across between shock detection circuit anode and power cathode; Light-emitting diode D4 is connected across between shock detection circuit anode and power cathode after connecting with resistance R 14; Resistance R 10 is connected across between shock detection circuit anode and the end of oppisite phase of comparator; Variable rheostat R12 is connected across between shock detection circuit anode and power cathode, and its sliding end is connected to the in-phase end of comparator U3A; Resistance R 11 is connected across between shock detection circuit anode and the mouth of comparator; Light-emitting diode D5 is connected across shock detection circuit anode and comparator U3A mouth after connecting with resistance R 15; Capacitor C 6 is connected between comparator U3A end of oppisite phase and power cathode; The base stage of aerotron Q1 is connected to the input and output pin P2.1 of master controller by resistance R 4, the collecting electrode of aerotron Q1 is connected with coil one end of electromagnetic relay K1 and (connects below and mentioned with the anode tap of diode D1, just carry and having repeated again), the emitter of aerotron Q1 is connected to power cathode; The coil other end of electromagnetic relay K1 is connected to positive source, and the normally closed switch of electromagnetic relay K1 is vacant not to be connect, and one end of normal open switch is connected to positive source, and the other end of normal open switch is connected to the positive terminal of shock detection circuit; Diode D1 is connected across the coil two ends of electromagnetic relay, and wherein the anode tap of diode D1 is connected to the collecting electrode of aerotron Q1, and the cathode terminal of diode D1 is connected to positive source.
Further preferably, the model of shock sensor is SW-420; The model of comparator is LM393.
As preferably, GSM SMS alarm circuit comprises gsm module J1, power interface J2 and button GSM_KEY; The GND pin of gsm module is received power cathode, RING pin vacant need not, TXD pin is connected to the RXD pin of master controller U1, RXD pin is connected to the TXD pin of master controller U1, VCC pin, GND pin are connected to power interface, and BOOT pin is connected to button GSM_KEY one end; The button GSM_KEY other end is connected to power cathode.
Further preferably, the model of gsm module J1 is SIM100.
As preferably, infrared exoelectron lock circuit comprises infrared receiving module U4; The I/O mouth of infrared receiving module U4 is connected to outer interruption 0 pin of master controller U1.
Further preferably, the model of infrared receiving module is 1838.
As preferably, sound light alarming circuit comprises loudspeaker or buzzer phone U2 and highlighted red LED lamp D3.
The invention has the beneficial effects as follows:
Monitor automobile by shock sensor and whether shake to carry out anti-theft alarm, type of alarm, except adopting common sound and light alarm, also adopts GSM long distance wireless to report to the police, and really realizes real-time, long-range, radio alarming.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the circuit block diagram of alarms and security systems for automobiles embodiment of the present invention.
Fig. 2 is the schematic circuit diagram of alarms and security systems for automobiles embodiment of the present invention.
Detailed description of the invention
Fig. 1 is the circuit block diagram of alarms and security systems for automobiles.
As shown in Figure 2, integrated circuit is divided into system power supply feed circuit, main controller circuit, sound light alarming circuit, GSM SMS alarm circuit, infrared exoelectron lock circuit, shock detection circuit.Wherein main controller circuit also comprises reset circuit and crystal oscillating circuit, and GSM SMS alarm circuit also comprises signal indicating circuit, and shock detection circuit also comprises the on/off control circuit of shock detection circuit.
In system power supply feed circuit, total access port that POWER is system power supply, is cylinder-shaped joint, and 5V power supply is provided, and KG is system power supply main supply switch, and D2 is system power supply indicator lamp.In Fig. 2, main supply switch KG is pulled to the left side (2 pin are connected with 3 pin), connect system power supply, system power supply indicator lamp D2 can be luminous, shows that system has obtained 5V power supply.Main supply switch KG is pulled to the right (1 pin is connected with 2 pin), cutting system power supply, system power supply indicator lamp D2 extinguishes.
In main controller circuit, adopt STC89C52RC as master controller, be used for receiving extraneous incoming signal and control external circuitry mode of operation.In the time that car owner uses automobile, first launch infrared signal to master controller by Infrared remote controller, master controller receives after correct infrared signal, cut off immediately the power supply of shock detection circuit, remove the mode of operation of shock detection circuit, make car owner normally use automobile, shock detection circuit is inoperative.If this car of trespassory taking, owing to not launching correct infrared signal to the master controller on automobile, master controller can not cut off the power supply of shock detection circuit, once open by force arrangements for automotive doors or vehicle window, automobile is shaken, shock detection electric circuit inspection is after vibration signal, master controller is controlled sound light alarming circuit immediately, make it go out sound and ruddiness warning, send default alarming short message to car owner by GSM SMS alarm circuit simultaneously, inform that car owner's automobile is stolen.
Wherein the pin RST of master controller U1 is connected with reset circuit, the reset switch that button RST_KEY is main controller circuit, and the effect of reset circuit is in order to allow master controller U1 initialization internal register in the time powering on, to reach a definite initial condition.Pin XTAL1, the XTAL2 of master controller U1 are connected with crystal oscillating circuit.Crystal oscillating circuit is that clocking offers master controller U1 use.
In infrared exoelectron lock circuit, use infrared receiving module 1838 to receive remote control infrared signal.This receiver module is a three-terminal element, has feature low in energy consumption, that antijamming capability is strong, input sensitivity is high.1838 input/output port (being I/O mouth) is received P3.2 (interrupting 0 outward) mouthful of master controller STC89C52RC.In the time that the infrared signal of remote controller transmitting is received by 1838, master controller STC89C52RC produces interrupt signal immediately, judges after correct remote-control data, cuts off anti-theft alarm modular power source, and anti-theft alarm functions of modules is removed.
In shock detection circuit, shock sensor SW-420 converts vibration signal to voltage signal by comparator LM393.The output pin D0 of comparator LM393 is connected with the P2.0 pin of master controller STC89C52RC.In the time that shock sensor does not detect vibrations, (vibration switch belongs to a kind of structure of shock sensor inside to the vibration switch of shock sensor SW-420 inside, a kind of electronic switch) be closed conducting state, comparator LM393 mouth D0 output TTL low level, it draws the P2.0 pin of master controller STC89C52RC into low level, shock detection indicator lamp D5 lights, and represents that shock detection circuit is in the normal work of standby; In the time that shock sensor detects vibrations, the vibration switch moment of shock sensor inside disconnects, comparator LM393 mouth D0 output TTL high level, and it draws the P2.0 pin of master controller STC89C52RC into high level, and shock detection indicator lamp D5 extinguishes.In the time that master controller STC89C52RC detects that P2.0 pin is high level, enter immediately alert program, master controller STC89C52RC sends alarm command to GSM SMS alarm circuit and sound light alarming circuit.
In the on/off control circuit of shock detection circuit, utilize electromagnetic relay (calling relay in the following text) to control the on/off of shock detection circuit.The model of relay is the G15LA-14-5VDC of Omron Corp; Relay is the coil of relay inside, and K1 is the on and off switch of relay inside, and diode D1 is that protective relay Inside coil avoids the effect that burnt by large electric current, and model is IN4148.The coil that aerotron Q1 is relay provides larger electric current, and model is 8050.The base stage of aerotron Q1 is connected with the P2.1 pin of master controller STC89C52RC.In the time of automobile normal release, master controller STC89C52RC receives after correct infrared remote-controlled signal, just control P2.1 pin output low level, aerotron Q1 is in off condition, the coil Relay of relay does not have electric current to pass through, and the on and off switch K1 of relay, in off-state, cuts off the 5V power supply of shock detection circuit, vibrations circuit power indicator lamp D4 will extinguish, and now shock detection circuit is without work; In the time of the improper release of automobile, STC89C52RC can not receive correct infrared remote-controlled signal, just control P2.1 pin output high level, aerotron Q1 is in conducting state, and the coil Relay of relay has larger electric current to pass through, and the on and off switch K1 of relay is in closure state, 5V power supply is provided to shock detection circuit, vibrations circuit power indicator lamp D4 will light, and represents the power connection of shock detection circuit, whether stolenly can detect automobile.When the on and off switch of relay is in make and break process; due to electromagnetic induction phenomenon; can on the Inside coil of relay, form larger induced electric motive force, the electric current that diode D1 forms induced electric motive force is drained rapidly, plays the effect of protective relay Inside coil.
GSM SMS alarm circuit comprises gsm module J1, power interface J2 and button GSM_KEY.Wherein the model of gsm module J1 is SIM100, and power interface J2 provides power supply, the start switch that button GSM_KEY is gsm module for gsm module.In the time pushing button GSM_KEY, the BOOT pin of GSM circuit is connected with GND, and gsm module J1 starts working.The 3rd pin (TXD) of gsm module J1 and the 4th pin (RXD) respectively with P3.0 pin and the P3.1 pin mutual data transmission of master controller STC89C52RC, wherein gsm module J1 sends master controller STC89C52RC by the 3rd pin to data, and the 4th pin of gsm module J1 can receive the data that the P3.1 pin of master controller STC89C52RC sends.
GSM SMS alarm circuit also comprises signal indicating circuit, and wherein light-emitting diode D6 is that GSM sends note indicator lamp.
In sound light alarming circuit, audible alarm has adopted buzzer phone U2, also can adopt toy trumpet.Luminous alarm be the LED lamp D3 of high shiny red.
The present embodiment is taking micro controller system STC89C52RC as system control core, shock detection circuit is for detection and the collection of thump signal, sound light alarming circuit is for realizing the Realtime Alerts of vehicle self, and GSM SMS alarm circuit sends alarming short message for realizing to car owner.
The present embodiment also comprises software except above-mentioned hardware.Software aspect is mainly used micro controller system to carry out the operation of global procedures, by calling the warning function of correlation module, realizes warning function.
By the material object after having designed and produced is tested, annunciator can be realized preset function, meets designing requirement.
Working process
Whether the present embodiment adopts micro controller system (being master controller) as core processor, first shake by shock detection electric circuit inspection automobile.In the time of the normal driving of car owner oneself, electronic lock can be removed, shock detection circuit will be cut off power supply cannot work it; When automobile occurs when stolen, under the condition of not removing electronic lock, open by force arrangements for automotive doors or vehicle window, because shock detection circuit does not have automatic cut-off power, in the process of starting automobile, will inevitably cause the vibrations of automobile, shock detection circuit comes to convert to voltage signal by the vibration signal collection detecting, delivers in micro controller system and processes.Secondly, the micro controller system voltage signal that collection is sent here according to shock detection circuit, judges this shock value whether for reasonably shaking scope, if vibration amplitude exceedes preset value, just it is stolen to be judged to be automobile.Last Single-chip Controlling sound light alarming circuit is sounded and red flare is reported to the police, and while Single-chip Controlling GSM SMS alarm circuit sends SMS notification car owner, final local warning and the SMS alarm function realized.In addition, can also increase a switching device for hard closing automobile oil-way, make this device under the control of micro controller system, hard closing automobile oil-way in sending warning.
The test method of the present embodiment is as follows:
The present embodiment does not have shock detection indicator lamp D5 under the normal condition of dangerous situation to light at automobile, vibrations circuit power indicator lamp D4 also lights, and system is in readiness for action.
(1) sound light alarming circuit test
In the time vibrations being detected, alarm lamp D3 flicker, the luminous larger sound of buzzer phone U2, the shock detection indicator lamp D5 of shock detection circuit extinguishes.Can learn that by test result this circuit can realize expectation function, meet designing requirement.
(2) ann test of GSM SMS alarm circuit
When shock detection electric circuit inspection is to whens vibrations, after system is carried out sound and light alarm, the GSM transmission note indicator lamp D6 that micro controller system sends instruction to GSM SMS alarm circuit can glimmer, show that micro controller system is sending instruction to GSM, after accepting instruction, GSM can send two alarm messages to designated mobile phone, its information content can be preset, as " Waring! ".Can learn that by test result this circuit can normally work, reach designing requirement.
By carrying out integrated testability, in the time that vibrations occur system, vibrations be can detect immediately, and sound light alarming circuit and GSM SMS alarm circuit working triggered, designated mobile phone can normally receive alarming short message.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present invention.
Claims (10)
1. alarms and security systems for automobiles, is characterized in that: comprise infrared exoelectron lock circuit, main controller circuit, shock detection circuit, sound light alarming circuit, GSM SMS alarm circuit; Described infrared exoelectron lock circuit is connected with main controller circuit; Described main controller circuit is connected with shock detection circuit, sound light alarming circuit, GSM SMS alarm circuit respectively.
2. alarms and security systems for automobiles according to claim 1, is characterized in that: described main controller circuit comprises master controller U1, crystal oscillating circuit and reset circuit;
Described master controller U1 is 8 8-digit microcontrollers;
Described crystal oscillating circuit by crystal oscillator X1 with capacitor C 3, C4 is in parallel forms, and is connected to crystal oscillator input XTAL1 and the crystal oscillator input XTAL2 pin of master controller U1, the other end of capacitor C 3, C4 all connects power cathode;
Described reset circuit comprises capacitor C 2, resistance R 2, R5 and button RST_KEY; Resistance R 2 is connected with button RST_KEY, in parallel with capacitor C 2 again, the one end after parallel connection is connected to positive source, and the other end is connected to resistance R 5, resistance R 5 other ends are received power cathode, and between resistance R 2 and resistance R 5, pig-tail wire is connected to the RST pin of master controller U1.
3. alarms and security systems for automobiles according to claim 2, is characterized in that: the model of described 8 8-digit microcontroller U1 is STC89C52RC.
4. alarms and security systems for automobiles according to claim 2, is characterized in that: described shock detection circuit comprises shock sensor ZD, comparator U3A, resistance R 4, R10, R11, R14, R15, capacitor C 5, C6, variable rheostat R12, light-emitting diode D4, D5, diode D1, electromagnetic relay K1 and aerotron Q1; Described shock sensor ZD is connected between the end of oppisite phase and power cathode of comparator U3A; The in-phase end of described comparator U3A is connected to the sliding end of variable rheostat R12, and the end of oppisite phase of comparator U3A is connected to power cathode, and the mouth of comparator U3A is connected to the input and output pin P2.0 of master controller; Described capacitor C 5 is connected across between shock detection circuit anode and power cathode; Described light-emitting diode D4 is connected across between shock detection circuit anode and power cathode after connecting with resistance R 14; Described resistance R 10 is connected across between shock detection circuit anode and the end of oppisite phase of comparator; Described variable rheostat R12 is connected across between shock detection circuit anode and power cathode, and its sliding end is connected to the in-phase end of comparator U3A; Described resistance R 11 is connected across between shock detection circuit anode and the mouth of comparator; Described light-emitting diode D5 is connected across shock detection circuit anode and comparator U3A mouth after connecting with resistance R 15; Described capacitor C 6 is connected between comparator U3A end of oppisite phase and power cathode; The base stage of described aerotron Q1 is connected to the input and output pin P2.1 of master controller by resistance R 4, the collecting electrode of aerotron Q1 is connected with coil one end of electromagnetic relay K1, and the emitter of aerotron Q1 is connected to power cathode; The coil other end of described electromagnetic relay K1 is connected to positive source, and the normally closed switch of electromagnetic relay K1 is vacant not to be connect, and one end of normal open switch is connected to positive source, and the other end of normal open switch is connected to the positive terminal of shock detection circuit; Described diode D1 is connected across the coil two ends of electromagnetic relay, and wherein the anode tap of diode D1 is connected to the collecting electrode of aerotron Q1, and the cathode terminal of diode D1 is connected to positive source.
5. alarms and security systems for automobiles according to claim 4, is characterized in that: the model of described shock sensor is SW-420; The model of described comparator is LM393.
6. alarms and security systems for automobiles according to claim 2, is characterized in that: described GSM SMS alarm circuit comprises gsm module J1, power interface J2 and button GSM_KEY; The GND pin of described gsm module is received power cathode, RING pin vacant need not, TXD pin is connected to the RXD pin of master controller U1, RXD pin is connected to the TXD pin of master controller U1, VCC pin, GND pin are connected to power interface, and BOOT pin is connected to button GSM_KEY one end; The described button GSM_KEY other end is connected to power cathode.
7. alarms and security systems for automobiles according to claim 6, is characterized in that: the model of described gsm module J1 is SIM100.
8. alarms and security systems for automobiles according to claim 2, is characterized in that: described infrared exoelectron lock circuit comprises infrared receiving module U4; The I/O mouth of described infrared receiving module U4 is connected to outer interruption 0 pin of master controller U1.
9. alarms and security systems for automobiles according to claim 8, is characterized in that: the model of described infrared receiving module is 1838.
10. alarms and security systems for automobiles according to claim 2, is characterized in that: described sound light alarming circuit comprises loudspeaker or buzzer phone U2 and highlighted red LED lamp D3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410427633.0A CN104149737A (en) | 2014-08-28 | 2014-08-28 | Anti-theft device for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410427633.0A CN104149737A (en) | 2014-08-28 | 2014-08-28 | Anti-theft device for automobile |
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| CN104149737A true CN104149737A (en) | 2014-11-19 |
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| CN201410427633.0A Pending CN104149737A (en) | 2014-08-28 | 2014-08-28 | Anti-theft device for automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627481A (en) * | 2017-01-18 | 2017-05-10 | 无锡猎吧网络科技有限公司 | Vehicle identification system intelligent control part |
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| CN106627481A (en) * | 2017-01-18 | 2017-05-10 | 无锡猎吧网络科技有限公司 | Vehicle identification system intelligent control part |
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Application publication date: 20141119 |