CN1506252A - Anti-theft device for automobile - Google Patents
Anti-theft device for automobile Download PDFInfo
- Publication number
- CN1506252A CN1506252A CNA021511497A CN02151149A CN1506252A CN 1506252 A CN1506252 A CN 1506252A CN A021511497 A CNA021511497 A CN A021511497A CN 02151149 A CN02151149 A CN 02151149A CN 1506252 A CN1506252 A CN 1506252A
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- circuit
- computer
- switch
- cipher
- mouth
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- Burglar Alarm Systems (AREA)
Abstract
The anti-theft device for automobile is one anti-theft alarm. The anti-theft alarm has computer as key element as well as cipher input and display, switch, alarming and interface circuits. The cipher input circuit has one button for storing and reading cipher and the selective ciphers are huge in number and thus very reliable. Some command may be sent to the electronic switch to enable or disable the engine selectively. The present invention is provided with twice error cipher prompt, thrice error cipher alarming and line breaking alarming functions and has very high cipher security and effective and reliable anti-theft alarming.
Description
Technical field
The present invention relates to a kind of burglar alarm, especially a kind of alarms and security systems for automobiles.
Background technology
Existing automobile mainly is to adopt the mode of mechanical switch to control the starting ignition circuit, and antitheft is insecure, if the car stealer steal automotive lock switch key, or lock-switch two ends lead cut off the back short circuit, can steal automobile.
Summary of the invention
Technical matters to be solved by this invention provides a kind of alarms and security systems for automobiles, realizes the monitoring to vehicle.
The technical solution adopted for the present invention to solve the technical problems is: this device is core with the micro computer, carries out logic operation and reasoning, handles input/output signal.Contain the password input, digital display circuit, electronic switching circuit, warning circuit, computer connects with password input display circuit through interface circuit.Utilize a button in order to storage with read password in the password input circuit, alternative different password quantity is extremely huge, make its password have high reliability, electronic switching circuit contains an electronic switch and actuator thereof, electronic switch is gone into end and is connected with positive supply, mouth is connected to the automotive ignition electricity and chews, whether computing machine conforms to the password that reads according to storage, export the instruction of its break-make of control to electronic switch in good time, computing machine is exported a logic level to warning circuit simultaneously in good time, the control warning circuit is connected, and sends warning.
The invention has the beneficial effects as follows: adopt computer coding mode anti-theft alarm, have inferior error code prompting, three times error code is reported to the police and the line broken circuit warning function, and password has high confidentiality, thereby anti-theft alarm is very effectively reliable.
Description of drawings
Fig. 1 technical solution of the present invention circuit structure block diagram.
Fig. 2 is the embodiment circuit structure diagram.
The specific embodiment
Computer 1 of the present invention can be selected the MCS-51 series monolithic for use, interface circuit 2 is the integrated package compatible with it, and password input display circuit 3 contains character demonstration position and selects actuator 32 except that an executive component button 31 is arranged, five character displays 33, section is selected actuator 34.Selecting silicon control 3CT104 for use is electronic switching element 41, and its actuator 42 is 7404 chips.Input end at electronic switch also can seal in automobile mechanical switch 44, more makes automobile have the double anti-theft insurance function, also has the wire sensor 43 of the responsive line broken circuit of an energy in the switch circuit, and it selects the 4N35 device for use.Its input end is connected to positive supply through resistance R 1, and mouth is connected to micro controller system through R2, and 2,4 pin also play ground connection.Warning circuit 5 contains actuator 51,52, relay J, audio signal generator 53, audio signal amplifier 54 and loudspeaker 55, actuator 51 input ends connect with micro controller system, and output causes an end of the coil active potential of relay J.Similar to switch circuit, be furnished with derivative sensor 56 and backup power 57 that sensitivity opens circuit, 4N35 input end 1 pin connects positive supply through R3, and 2,4 pin also play ground connection, and mouth 5 pin are respectively through resistance R 4, and actuator 52 is connected to the relay coil two ends.Below concise and to the point narration anti-theft alarm service condition of the present invention: 1. cipher anti theft is reported to the police, see before and operate and demonstration, have only when reading password and storage password when conforming to, micro controller system is just exported the electronic switch turn-on command and is driven electronic switch, automobile can start, continuous three input error codes, computer is devoted oneself to work warning circuit to warning circuit actuator 51 output high level and is sent warning.2. cause open wires when the normal fault of power circuit or car stealer cut off power lead, wire sensor 43 is to computer output high level.Through the computer calculation process, the output high level is given warning circuit actuator 51, and warning circuit is reported to the police, and simultaneously, computer is not exported the electronic switch turn-on command, and automobile can't start.3. stealer cuts off the warning circuit power supply, and the annunciator backup power is automatic power immediately, and wire sensor 5 outputs one high level drives alarm equipment alarm for actuator 52,52 output low levels.
Claims (3)
1. alarms and security systems for automobiles, it is characterized in that: with computer (1) is core, contain password input display circuit (3), electronic switching circuit (4), warning circuit (5), computer (1) connects with password input display circuit (3) through interface circuit (2), there is one in the password input circuit in order to store and to read the button (31) of password, electronic switching circuit (4) contains electric switch and drives device, the input end of electronic switch connects with positive supply, mouth is connected to the automotive ignition electricity and chews, computer is carried the instruction of leaning on its break-make of system to electronic switch, and computer is also to its logic level of reporting to the police of warning circuit output control in good time.
2. alarms and security systems for automobiles according to claim 1, it is characterized in that: the input end of electronic shape switch is serially connected with automotive lock switch (44), also be furnished with the wire sensor (43) that sensitivity opens circuit in the electronic switching circuit, its input end, mouth are connected to positive supply and computer (1) respectively.
3. alarms and security systems for automobiles according to claim 1 and 2, it is characterized in that: be furnished with wire sensor (56) and backup power (57) in the warning circuit, wire sensor input termination positive supply, mouth is connected to intermediate relay J line mouth volume two ends through resistance (R4), actuator (52) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021511497A CN1506252A (en) | 2002-12-06 | 2002-12-06 | Anti-theft device for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021511497A CN1506252A (en) | 2002-12-06 | 2002-12-06 | Anti-theft device for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1506252A true CN1506252A (en) | 2004-06-23 |
Family
ID=34234283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021511497A Pending CN1506252A (en) | 2002-12-06 | 2002-12-06 | Anti-theft device for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1506252A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100585646C (en) * | 2007-06-01 | 2010-01-27 | 重庆集诚汽车电子有限责任公司 | A kind of electronic anti-theft system for automobile engine locking |
| CN102991460A (en) * | 2012-11-29 | 2013-03-27 | 浙江吉利汽车研究院有限公司杭州分公司 | Anti-theft system of automobile door |
| CN103895607A (en) * | 2012-12-24 | 2014-07-02 | 福特全球技术公司 | Capacitance-based catalytic converter protection systems and configurations |
| CN104709240A (en) * | 2013-12-16 | 2015-06-17 | 联芯科技有限公司 | Anti-theft method, anti-theft system and vehicle-mounted broadband wireless device |
-
2002
- 2002-12-06 CN CNA021511497A patent/CN1506252A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100585646C (en) * | 2007-06-01 | 2010-01-27 | 重庆集诚汽车电子有限责任公司 | A kind of electronic anti-theft system for automobile engine locking |
| CN102991460A (en) * | 2012-11-29 | 2013-03-27 | 浙江吉利汽车研究院有限公司杭州分公司 | Anti-theft system of automobile door |
| CN102991460B (en) * | 2012-11-29 | 2015-09-30 | 浙江吉利汽车研究院有限公司杭州分公司 | A kind of anti-theft system of automobile door |
| CN103895607A (en) * | 2012-12-24 | 2014-07-02 | 福特全球技术公司 | Capacitance-based catalytic converter protection systems and configurations |
| CN103895607B (en) * | 2012-12-24 | 2018-05-01 | 福特全球技术公司 | Catalyst protection system and structure based on capacitance |
| CN104709240A (en) * | 2013-12-16 | 2015-06-17 | 联芯科技有限公司 | Anti-theft method, anti-theft system and vehicle-mounted broadband wireless device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |