CN102390355A - Auto anti-theft alarm - Google Patents
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- CN102390355A CN102390355A CN2011103232223A CN201110323222A CN102390355A CN 102390355 A CN102390355 A CN 102390355A CN 2011103232223 A CN2011103232223 A CN 2011103232223A CN 201110323222 A CN201110323222 A CN 201110323222A CN 102390355 A CN102390355 A CN 102390355A
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Abstract
The invention provides an auto anti-theft alarm which comprises a single-chip microcomputer, a power supply unit, an acoustic alarm unit, a sensor detection unit, a remote control unit, an ignition system power cut-out unit and a wireless alarm unit, wherein the remote control unit emits infrared signals, and an infrared receiver unit after receiving the infrared signals transmits the infrared signals to the single-chip microcomputer to carry out alarm state switching; the sensor detection module transmits detected signals to the single-chip microcomputer; the control end of the ignition system power cut-out unit is connected with the single-chip microcomputer; and the wireless alarm unit is connected with the single-chip microcomputer. The auto anti-theft alarm provided by the invention has the characteristics of low cost, high precision, miniaturization performance, and the like; and the auto anti-theft alarm has detecting and alarming functions for auto anti-theft alarms, auto tyres lacking of pressure and the temperature of cooling systems, therefore, the auto anti-theft alarm is economic, practical and applicable.
Description
Affiliated technical field
The present invention relates to automobile technical field, a kind of car alarm is provided.
Background technology
Along with science and technology development and progress, steal driver's section and constantly upgrade, be tending towards high-technicalization gradually, and present Car Burglar Alarm mainly contains following several types:
One type is mechanical Car Burglar Alarm.The machinery Car Burglar Alarm mainly is a mechanical anti-theft lock, mainly reaches the antitheft purpose through study lock-up clutch, braking throttle or bearing circle, gear, and its shortcoming is that only antitheft is not reported to the police, and it is not thorough to guard against theft, and the dismounting trouble.
One type is gps satellite position fixing system in the market; The gps satellite position fixing system is present domestic and international state-of-the-art anti-joyride device, multiple functions such as gps system has that vehicle location, Anti-Robbing alarming, network theftproof, remote control are flame-out, monitoring in the car, the rescue of casting anchor, traffic information, manual guidance, vehicle query.Gps satellite location automotive theft proof system belongs to the network type Car Burglar Alarm, and it mainly leans on network type electron or starting to reach the antitheft purpose, and also can pass through the gps satellite position fixing system simultaneously, and alarm message and warning vehicle position voicelessly are sent to alarm center.Though this anti-theft technique has theft-proof effect, use and be not very practical, and price is also expensive, actual work is with little.The hygienic trace anti-theft system mainly is car equipment repaying system, screen via satellite; Showing vehicle location, according to the hygienic trace of installation system person is arranged in the stolen car, is that messaging system is destroyed invariably therefore; Promptly be that power supply is cut off, make satellite can't track the particular location of automobile, promptly lose antitheft effectiveness; And cost an arm and a leg, light is installed once cover does not need cost 6000-7000 unit with the GPS of read-out, and the annual service charge that also needs to pay to gps system service company nearly 1,000 yuan; High purchase expense and usage charges let many car owners hang back deficiency in economic performance.
Utilizing low cost, high precision, micro-miniaturisation performance and the characteristics design of micro controller system is a kind of multifunctional Alarm for Vehicle of core with it; Utilize the real-time control and the data processing function of micro controller system, the completion system reports to the police to the detection alarm and the cooling system temperature detection of car alarm, tyre underpressure.This multifunction alarm device has economical and practical advantage and meets the level of consumption of ordinary populace, can be accepted by most auto consumer, becomes the warning of paying the utmost attention to installation of ordinary populace user vehicle gradually.
Summary of the invention
The object of the present invention is to provide a kind of car alarm
The present invention is for realizing that above-mentioned purpose adopts following technical scheme:
A kind of car alarm; It is characterized in that: its composition comprises micro controller system, power subsystem unit, acoustic alarm device unit, sensor unit, RCU, ignition system power switching unit, radio alarming unit; Said RCU sends infrared signal; The infrared ray receiving element is given the switching that micro controller system carries out alarm condition with signal after receiving, and said sensor module is given micro controller system with detected signal; Said ignition system power switching unit control end is connected with micro controller system; Said radio alarming unit is connected with micro controller system.
Its composition of said sensor unit comprises infrared pickoff, shock sensor, temperature sensor and pressure sensor; Said infrared pickoff is connected with the P1.3 of micro controller system with the back with shock sensor; The temperature sensor mouth meets the P1.0 of micro controller system, and the mouth of pressure sensor meets the P1.7 of micro controller system.
Its composition of said RCU comprises infra-red ray transmitting unit and infrared ray receiving element, and said infrared ray receiving element mouth is connected with P1.1, the P1.2 of micro controller system.
Said micro controller system adopts AT89S51.
Said acoustic alarm device unit input control end meets the P2.0 of micro controller system.
The negative electrode that the negative electrode that the negative electrode of the light-emitting diode D3 of said ignition system power switching unit meets P2.3, the D4 of micro controller system meets P2.2, D5 meets P2.1, and aerotron VT3 base stage meets P2.4.
Said radio alarming unit comprises signal transmitter unit and signal receiving unit, and the input control end of signal transmitter unit is connected with the P2.6 of micro controller system.
The invention has the beneficial effects as follows:
Annunciator of the present invention has characteristics such as low cost, high precision, micro-miniaturisation performance, and it has the detection alarm and the cooling system temperature detection warning function of car alarm, tyre underpressure, economical and practical being suitable for.
Description of drawings
Fig. 1 is a system block diagram of the present invention;
Fig. 2 is schematic circuit diagram of the present invention;
Fig. 3 is an AT89S51 chip periphery circuit diagram of the present invention;
Fig. 4 is a system power supply circuit diagram of the present invention;
Fig. 5 is a point of cutoff ignition system power unit circuit schematic diagram of the present invention;
Fig. 6 is an infra-red ray transmitting unit electric power schematic diagram of the present invention;
Fig. 7 is an infrared ray receiving element electric power schematic diagram of the present invention;
Fig. 8 is an audible alarm element circuit schematic diagram of the present invention;
Fig. 9 is of the present invention unlimited signal receiving unit schematic circuit diagram;
Figure 10 is of the present invention unlimited signal transmitting unit schematic circuit diagram.
The specific embodiment
A kind of car alarm; Its composition comprises micro controller system, power subsystem unit, acoustic alarm device unit, sensor unit, RCU, ignition system power switching unit, radio alarming unit; Said RCU sends infrared signal, and the infrared ray receiving element is given the switching that micro controller system carries out alarm condition with signal after receiving.Said sensor module is given micro controller system with detected signal; Said ignition system power switching unit control end is connected with micro controller system; Said radio alarming unit is connected with micro controller system.
Its composition of said sensor unit comprises infrared pickoff, shock sensor, temperature sensor and pressure sensor; Said infrared pickoff is connected with the P1.3 of micro controller system with the back with shock sensor; The temperature sensor mouth meets the P1.0 of micro controller system, and the mouth of pressure sensor meets the P1.7 of micro controller system.
Its composition of said RCU comprises infra-red ray transmitting unit and infrared ray receiving element, and said infrared ray receiving element mouth is connected with P1.1, the P1.2 of micro controller system.
Said micro controller system adopts AT89S51.
Said acoustic alarm device unit input control end meets the P2.0 of micro controller system.
The negative electrode that the negative electrode that the negative electrode of the light-emitting diode D3 of said ignition system power switching unit meets P2.3, the D4 of micro controller system meets P2.2, D5 meets P2.1, and aerotron VT3 base stage meets P2.4.
Said radio alarming unit comprises signal transmitter unit and signal receiving unit, and the input control end of signal transmitter unit is connected with the P2.6 of micro controller system.
RCU
The handoff functionality of alarm condition is can annunciator be made as the state of withdrawing a garrison as the user onboard the time, in order to avoid maloperation; When the user leaves car, annunciator is made as the state of setting up defences, the warning when realizing nobody.This paper adopts PT2262/PT2272 infrared coding/decoding chip group to realize the distant control function to system.
The sensor unit
Be used to detect the electric signal that shock sensor, infradred sensor, temperature sensor and pressure sensor send.If when someone attempts to open car door and starts automobile into the car; The shock sensor of cab warning and rpyroelectric infrared acquisition sensor two-way sensor collect the alert signal simultaneously; Give the 89S51 micro controller system through NAND gate circuit output alert information, micro controller system is through after the judgment processing, and output signal carries out sound and light alarm; The power supply of while point of cutoff ignition system, and issue the car owner to alarm message through wireless signal transmission circuit and report to the police; When annunciator is in when withdrawing a garrison state, do not respond this alarm message.
The audible alarm unit
Design adopt light-emitting diode and loud speaker to form, this warning driving circuit is that its schematic circuit diagram are as shown in Figure 8 with the multi resonant autoexcitation booster circuit of discrete component composition.
When the P2.0 of 89S51 has signal to change, send into this warning driving circuit, import through the Q1 base stage; If reaching aerotron Q1 conducting, signal voltage amplifies condition; Q1 starts working, and the collecting electrode outgoing level makes Q2 get into mode of operation through the base stage that C9 is coupled to Q2; Q2 collecting electrode output voltage is coupled to the Q1 base stage through C8 simultaneously, accomplishes autoexcitation.The principle of work of Q3 and Q4 is the same with the principle of work of Q1 and Q2; The collecting electrode of Q4 output signal voltage simultaneously is added on the NPN compound transistor of being made up of Q5 and Q6; Signal voltage is carried out high power to be amplified; It is elementary to send into step-up transformer, is coupled to the secondary loud speaker that adds to, and produces high-power alarm sound.
Native system also adopts the hardware watchdog circuit, to solve the problem that makes system's cisco unity malfunction because of program fleet, improves the reliability of system.For this reason, use MAX813L to design the microcomputer monitoring circuit, to guarantee system's reliability service.Its groundwork: MAX813L has a house dog input and reset output terminal, and micro controller system must whenever be sent into a signal (being called feeding-dog signal) to input end (WDI) within 1.6S; Want seeking time if surpass, MAX813L can not receive feeding-dog signal, and its reset output terminal (RESET) will produce a reset signal.When program fleet, program can't normally have been moved promptly can not send feeding-dog signal to MAX813L in the time that requires, and resets thereby house dog produces the reset enable signal micro controller system, and return information normally moves again.The junction circuit of it and micro controller system is as shown in Figure 3.
After system's energising, main program is accomplished initial work earlier, comprises stack pointer, sets the mode of operation and the initial value of timer/counter, and relevant memory cell is put initial value, starts timer/counter, opens interruption or the like.To be in cyclic query constantly then and detect in the signal condition that remote signal and processes sensor send here, detect each input port state, need judge whether warning.If set up defences invalidating signal, then control system does not detect the information that the alert Acquisition Circuit is sent here.When automobile is in running order, be placed in tyre underpressure sensor, temperature sensor of automobile diverse location etc., the collection site signal; With detected air pressure, temperature signal; Through amplification, filtering, analogue to digital conversion, send the 89S51 micro controller system to, micro controller system with data handle, computing, comparison; When Everything is fine, annunciator was not reported to the police; If produced out-of-limitly with the upper limit or lower limit, then produce to interrupt, the micro controller system output signal, driving sound, optical alarm circuit send sound, light is reported to the police.When system detect set up defences signal effectively after, if when single-chip computer control system detects the alert signal, system will launch wireless signal; And connect sound and light alarm simultaneously; Outage, the oil-break signal is also effective immediately, and chaufeur is in time taken measures after receiving wireless signal, prevents that automobile is stolen.
Point of cutoff ignition system power subsystem unit
As shown in Figure 5, light-emitting diode D3-D5 links to each other with the P2.1-P2.3 port of micro controller system respectively, and D3 representes anti-theft alarm; D4 representes the motor tire undervoltage warning; D5 representes the automobile cooling system temperature alarming; Point of cutoff ignition system and control oil channel be by Single-chip Controlling relay K M1, and the switch of the contact through relay K M1 is realized the unify control of control oil channel of automotive ignition system with closed.
Claims (7)
1. car alarm; It is characterized in that: its composition comprises micro controller system, power subsystem unit, acoustic alarm device unit, sensor unit, RCU, ignition system power switching unit, radio alarming unit; Said RCU sends infrared signal; The infrared ray receiving element is given the switching that micro controller system carries out alarm condition with signal after receiving, and said sensor module is given micro controller system with detected signal; Said ignition system power switching unit control end is connected with micro controller system; Said radio alarming unit is connected with micro controller system.
2. car alarm according to claim 1; It is characterized in that: its composition of said sensor unit comprises infrared pickoff, shock sensor, temperature sensor and pressure sensor; Said infrared pickoff is connected with the P1.3 of micro controller system with the back with shock sensor; The temperature sensor mouth meets the P1.0 of micro controller system, and the mouth of pressure sensor meets the P1.7 of micro controller system.
3. car alarm according to claim 1 is characterized in that: its composition of said RCU comprises infra-red ray transmitting unit and infrared ray receiving element, and said infrared ray receiving element mouth is connected with P1.1, the P1.2 of micro controller system.
4. car alarm according to claim 1 is characterized in that: said micro controller system adopts AT89S51.
5. car alarm according to claim 1 is characterized in that: said acoustic alarm device unit input control end meets the P2.0 of micro controller system.
6. car alarm according to claim 1; It is characterized in that: the negative electrode that the negative electrode that the negative electrode of the light-emitting diode D3 of said ignition system power switching unit meets the P2.3 of micro controller system, D4 meets P2.2, D5 meets P2.1, and aerotron VT3 base stage meets P2.4.
7. car alarm according to claim 1 is characterized in that: said radio alarming unit comprises signal transmitter unit and signal receiving unit, and the input control end of signal transmitter unit is connected with the P2.6 of micro controller system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103232223A CN102390355A (en) | 2011-10-22 | 2011-10-22 | Auto anti-theft alarm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103232223A CN102390355A (en) | 2011-10-22 | 2011-10-22 | Auto anti-theft alarm |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103847635A (en) * | 2014-01-20 | 2014-06-11 | 南通苏禾车灯配件有限公司 | Automobile alarming device |
| CN104149737A (en) * | 2014-08-28 | 2014-11-19 | 任玲芝 | Anti-theft device for automobile |
| CN104786756A (en) * | 2015-03-24 | 2015-07-22 | 王方圆 | Tire pressure monitoring and automobile anti-theft integrated system |
| CN104918465A (en) * | 2015-06-24 | 2015-09-16 | 中山菲柯特电子电器有限公司 | A central control system anti-theft device that can automatically cool down |
| CN105398422A (en) * | 2015-11-20 | 2016-03-16 | 芜湖市振华戎科智能科技有限公司 | Automobile positioning and tracking system based on Beidou navigation satellite system |
| CN105438121A (en) * | 2015-11-20 | 2016-03-30 | 芜湖市振华戎科智能科技有限公司 | Vehicle positioning and tracking method based on Beidou navigation |
| CN106166999A (en) * | 2016-08-18 | 2016-11-30 | 成都众易通科技有限公司 | A kind of remote-controlled vehicle-mounted antitheft alarm device |
| CN106950869A (en) * | 2016-01-07 | 2017-07-14 | 天津普正动力科技有限公司 | A kind of on-vehicle information control system with safety protection function |
| CN107364336A (en) * | 2017-07-20 | 2017-11-21 | 金俊如 | A kind of Driving safety assistant system |
| CN107415889A (en) * | 2017-04-11 | 2017-12-01 | 成都缔客行势网络科技有限公司 | Automotive theft proof system based on infrared induction |
| CN107640123A (en) * | 2017-09-18 | 2018-01-30 | 合肥贯硕信息科技有限公司 | A kind of security of vehicle warning system |
| CN108275220A (en) * | 2017-01-06 | 2018-07-13 | 长沙乐昌林电子科技有限公司 | A kind of electric vehicle remote control alarming device design |
| WO2022057240A1 (en) * | 2020-09-18 | 2022-03-24 | 江苏科技大学 | Sound field perception-based low-power acoustic proximity alarm apparatus and alarm method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103847635A (en) * | 2014-01-20 | 2014-06-11 | 南通苏禾车灯配件有限公司 | Automobile alarming device |
| CN104149737A (en) * | 2014-08-28 | 2014-11-19 | 任玲芝 | Anti-theft device for automobile |
| CN104786756A (en) * | 2015-03-24 | 2015-07-22 | 王方圆 | Tire pressure monitoring and automobile anti-theft integrated system |
| CN104918465B (en) * | 2015-06-24 | 2017-10-13 | 广东菲柯特电子科技有限公司 | Central control system burglar alarm capable of automatically cooling |
| CN104918465A (en) * | 2015-06-24 | 2015-09-16 | 中山菲柯特电子电器有限公司 | A central control system anti-theft device that can automatically cool down |
| CN105398422A (en) * | 2015-11-20 | 2016-03-16 | 芜湖市振华戎科智能科技有限公司 | Automobile positioning and tracking system based on Beidou navigation satellite system |
| CN105438121A (en) * | 2015-11-20 | 2016-03-30 | 芜湖市振华戎科智能科技有限公司 | Vehicle positioning and tracking method based on Beidou navigation |
| CN106950869A (en) * | 2016-01-07 | 2017-07-14 | 天津普正动力科技有限公司 | A kind of on-vehicle information control system with safety protection function |
| CN106166999A (en) * | 2016-08-18 | 2016-11-30 | 成都众易通科技有限公司 | A kind of remote-controlled vehicle-mounted antitheft alarm device |
| CN108275220A (en) * | 2017-01-06 | 2018-07-13 | 长沙乐昌林电子科技有限公司 | A kind of electric vehicle remote control alarming device design |
| CN107415889A (en) * | 2017-04-11 | 2017-12-01 | 成都缔客行势网络科技有限公司 | Automotive theft proof system based on infrared induction |
| CN107364336A (en) * | 2017-07-20 | 2017-11-21 | 金俊如 | A kind of Driving safety assistant system |
| CN107640123A (en) * | 2017-09-18 | 2018-01-30 | 合肥贯硕信息科技有限公司 | A kind of security of vehicle warning system |
| WO2022057240A1 (en) * | 2020-09-18 | 2022-03-24 | 江苏科技大学 | Sound field perception-based low-power acoustic proximity alarm apparatus and alarm method |
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Application publication date: 20120328 |