CN101811491B - Multiple intelligent anti-theft system and implementation method for automobiles - Google Patents
Multiple intelligent anti-theft system and implementation method for automobiles Download PDFInfo
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- CN101811491B CN101811491B CN2009101055509A CN200910105550A CN101811491B CN 101811491 B CN101811491 B CN 101811491B CN 2009101055509 A CN2009101055509 A CN 2009101055509A CN 200910105550 A CN200910105550 A CN 200910105550A CN 101811491 B CN101811491 B CN 101811491B
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Abstract
The invention provides a multiple intelligent anti-theft system for automobiles, which comprises a non-contact intelligent key (105), first anti-theft equipment (102) and second anti-theft equipment (103), wherein owner identity information is stored in the non-contact intelligent key (105) and is sent on a first radio link; the first anti-theft equipment (102) is connected with a multi-channel intrusion detection device (104), receives the identity information on the first radio link for carrying out verification, sets a defense state/a defense relieving state according to the verification result and transmits the state on a second radio link, and if the state is the defense state, the vehicle monitoring information from the multi-channel intrusion detection device (104) is acquired in real time, and the monitoring information is sent to a service center (101) in a mobile communication mode; and the second anti-theft equipment (103) receives the state transmitted by the first anti-theft equipment (102) and locks/unblocks vehicle oil passages and circuits according to the state. Because the invention is based on the radio frequency technology and a mobile communication network is utilized, the constructed intelligent anti-theft alarm system is safe and reliable, can not be decrypted easily and also has the advantage of simple wiring.
Description
Technical field
The present invention relates to guard against theft and alarm system, relate in particular to automobile multiple intelligent anti-theft system and implementation method.
Background technology
RFID (Radio Frequency Identification; Radio frequency identification), be a kind of contactless automatic identification technology, it is through the automatic recognition objective object of radiofrequency signal and obtain related data; Identification work need not manual intervention, can work in various harsies environment.The RFID technology can be discerned high-speed moving object and can discern a plurality of labels simultaneously, and is swift and convenient to operate.
GPS (abbreviation of the prefix abbreviation NAVSTAR/GPS of Navigation Satellite Timing and Ranging/Global Positioning System) global positioning system; Be that the U.S. developed since the seventies in 20th century; Built up in 1994 comprehensively, have the satellite positioning of new generation and the navigationsystem of stationkeeping ability and comprehensive real-time three-dimensional navigation in sea, land and sky.Gps system not only can be used for measuring, navigation, also can be used for testing the speed, time service.Satellite-signal through GPS receives is accurately located, and can learn the information such as running route, position, speed, height above sea level of vehicle.
Mobile communication technology is to be the technology that communication user provides the real time information transmission with the radiowave, to be implemented in the individual smoothly mobile communication that ensures in coverage zone or the service zone.This technical field mainly comprises the technology of aspects such as wireless transmission technology, router technology, network management and terminal traffic service.
At present, can see various automobile burglar products on the market.The GPS location burglar alarms that for example occur in recent years etc. have been obtained effect within the specific limits.But these technology are stolen car group and are cracked, and make antitheft lose meaning.The producer of many production Car Burglar Alarms, the system that has also developed many kind lock oil or locked motor, its effect is exactly to make joyriding can't start automobile immediately, thereby prolongs the crime time of joyriding, for public security officer's track and localization is got the time.But their general shortcoming are: function ratio is more single, and more isolated mostly, in case the system of breaking down can not in time find.In addition, the mono-anti-theft product is also dangerous, with the development of science and technology easy crack.
Summary of the invention
The technical matters that the present invention will solve is, to automobile burglar function singleness, insecure shortcoming in the prior art, provides a kind of based on wireless radio-frequency, failure-free multiple intelligent guard against theft and alarm system and the implementation method of utilizing mobile communications network to make up.
The technical scheme that the present invention taked provides a kind of automobile multiple intelligent anti-theft system; It comprises: comprise non-contact intelligent key, first burglary-resisting installation, second burglary-resisting installation, multichannel invasion detecting device and servicing center, stored car owner's identity information in the wherein said non-contact intelligent key and on first Radio Link, sent said identity information; First burglary-resisting installation is connected on the said multichannel invasion detecting device; And the said identity information of reception is verified on first Radio Link; According to the checking setting as a result set up defences/withdraw a garrison state and on second Radio Link emission said state, send said monitor message if the state of setting up defences then obtains from the vehicle monitor information of said multichannel invasion detecting device and through mobile communication in real time to said servicing center; Second burglary-resisting installation receives the said state of said first burglary-resisting installation emission, and comes locking/unlock oil circuit and circuit according to said state.
According to embodiments of the invention, all has the tamper detection line on said first burglary-resisting installation and the said burglary-resisting installation.Because in the present invention, said burglary-resisting installation all has the tamper detection line, and therefore when a side was illegally dismantled, the opposing party can learn at once, and take an immediate action.For example, if said first burglary-resisting installation is disassembled, then second burglary-resisting installation is understood locking vehicle oil way and circuit at once; First burglary-resisting installation can be notified the car owner by servicing center then at once through mobile communication notification service center if second burglary-resisting installation is disassembled.
According to embodiments of the invention, said first burglary-resisting installation comprises: first radio-frequency module is used on first Radio Link, receiving said identity information; Authentication module with the coupling of said first radio-frequency module, is used to verify said identity information, and according to said checking setting as a result with send said state; Second radio-frequency module and the coupling of said authentication module are used on second Radio Link to the said state of said second burglary-resisting installation emission from said authentication module; Real-time monitoring module is connected with said multichannel invasion detecting device, is used at said state real-time monitoring vehicle when setting up defences, and transmission illegal invasion information; The GPS module is used to obtain gps signal to be converted into the location information of vehicle; And mobile communication module, be used to receive said state, said invasion signal and said location information, and send to said servicing center through mobile communication.
According to embodiments of the invention; Said first burglary-resisting installation also comprises the wireless tamper processing module with said second radio-frequency module coupling; Be used to receive the tamper warning message of said second burglary-resisting installation and send to said mobile communication module; So that report to the police, and the tamper warning message of also launching self when dismantling signal via said second radio-frequency module is arranged on said tamper detection line.
According to embodiments of the invention, said second burglary-resisting installation comprises: second radio-frequency module, be used for shown in receive the tamper warning message of said state and said first burglary-resisting installation on second Radio Link, through handling also output; Wireless tamper processing module; Be connected with said second radio-frequency module; Be used to receive the tamper warning message of said first burglary-resisting installation, and when on said tamper detection line, detection signal being arranged also via the tamper warning message of said second radio-frequency module emission self; And output driver module; Be connected with said wireless tamper processing module with said second radio-frequency module; Be used for coming locking/unlock oil circuit and circuit, according to the tamper warning message locking vehicle oil way and the circuit of said first burglary-resisting installation that receives according to the said setting up defences/state of withdrawing a garrison that receives.
The present invention provides a kind of automobile multiple intelligent theft preventing method, said method comprising the steps of
S101, first burglary-resisting installation receive the identity information of non-contact intelligent key emission and verify on first Radio Link;
S102, said first burglary-resisting installation be according to the checking setting as a result state of setting up defences/withdraw a garrison, and on second Radio Link, launch;
S103, second burglary-resisting installation receive said state on second Radio Link, if be the state of withdrawing a garrison, and then unlock oil circuit and circuit;
If S104 is the state of setting up defences, then locking vehicle oil way and circuit, said first burglary-resisting installation obtains in real time from the monitor message in the multichannel invasion detecting device and through mobile communication and sends said monitor message to servicing center.
Embodiment according to the method for the invention; When said method also is included in execution in step S104; Said first burglary-resisting installation and said second burglary-resisting installation judge separately whether cooresponding tamper detection line breaks off; If then cooresponding burglary-resisting installation just can be through second Radio Link to another burglary-resisting installation emission tamper warning message.
Embodiment according to the method for the invention, said monitor message comprises illegal invasion information, tamper alarm message and vehicle position information, wherein said tamper alarm message transmits on said second Radio Link.
Embodiment according to the method for the invention, said step S103 is further comprising the steps of: be under the situation of setting up defences at said state, further judged whether car owner's mobile phone notice of withdrawing a garrison; If have, then unlock oil circuit and circuit if do not have, then continue said step S104, monitor in real time.
Embodiment according to the method for the invention; Comprise the low frequency signal of said first burglary-resisting installation emission and first high-frequency signal of said non-contact intelligent key emission on said first Radio Link; Comprise second high-frequency signal on said second Radio Link, wherein first high-frequency signal is identical with second high-frequency signal or different.For preventing the interference between the high-frequency signal on said first Radio Link and said second Radio Link, they can be set launch at different time.
Beneficial effect: because the present invention has utilized mobile communications network and GPS communication system, the intelligent alarm security of system that therefore constructs, effective, the car owner can accurately learn the place that alert takes place the very first time.In addition, because the present invention has made full use of wireless radio-frequency, native system also has the simple advantage of wiring.And each burglary-resisting installation has the tamper warning function, so total system is reliable more and be difficult for being cracked.
Description of drawings
Fig. 1 is the structured flowchart according to automobile multiple intelligent anti-theft system of the present invention;
Fig. 2 is the structured flowchart according to first burglary-resisting installation of automobile multiple intelligent anti-theft system of the present invention;
Fig. 3 is the structured flowchart according to second burglary-resisting installation of automobile multiple intelligent anti-theft system of the present invention;
Fig. 4 is used to realize the diagram of circuit according to a part of anti-theft feature of the present invention in first burglary-resisting installation;
Fig. 5 is used to realize the diagram of circuit according to another part anti-theft feature of the present invention in second burglary-resisting installation.
The specific embodiment
Fig. 1 is the structured flowchart according to automobile multiple intelligent anti-theft system of the present invention.As shown in the figure, this system comprises non-contact intelligent key 105, have the tamper detection line first burglary-resisting installation 102, have second burglary-resisting installation 103 and the servicing center 101 of tamper detection line.
In one embodiment of the invention, non-contact intelligent key 105 utilizes the rolling code cipher mode to store car owner's identity information, and on first Radio Link, sends this information.First burglary-resisting installation 102 receives the said identity information of non-contact intelligent key 105 transmissions and verifies, state (as set up defences/withdraw a garrison) is set and on second Radio Link, sends this state according to the checking result.If set up defences state, then system obtains vehicle monitor information in real time, and sends this monitor message through mobile communication to servicing center 101 by first burglary-resisting installation 102, is reported to the police to the car owner by servicing center 101.
Here; Can transmit two kinds of frequency signals on first Radio Link: a kind of is the low frequency signal (125KHz) that first burglary-resisting installation, 102 conditions trigger emission; When having non-contact intelligent key 105 near the vehicle; This low frequency signal can activate it, makes non-contact intelligent key 105 launch first high-frequency signal that contains car owner's identity information to first burglary-resisting installation 102, and the frequency of this high-frequency signal can be 315MHz or 433MHz (different and different according to the RFID product of being selected for use).Non-contact intelligent key 105 is only just launched high-frequency signal after receiving suitable low frequency signal, can play the effect of power saving like this.
Wherein, second theft protection for devices 103 is communicated by letter on second Radio Link with first burglary-resisting installation 102.What transmit on this Radio Link in the present embodiment, is second high-frequency signal (its frequency can be 315MHz or 433MHz).On the one hand, second burglary-resisting installation 103 according to the state that receives as set up defences/withdraw a garrison locking/unlock oil circuit and circuit.On the other hand, for realizing wireless tamper warning function, first burglary-resisting installation 102 and second burglary-resisting installation 103 also send the tamper warning message that detects on the tamper detection line each other.
In addition, system as shown in Figure 1 also comprises multichannel invasion detecting device 104, and it is connected on first burglary-resisting installation 102.When system is under the state of setting up defences; When detecting the illegal invasion signal by first burglary-resisting installation 102; For example detect that the car internal gas pressure is unusual, automobile vibration is unusual and by the towing state etc., sends to servicing center 101 through mobile communication immediately, the alert of announcement.Start the GPS service, obtain the vehicle geographical location information, and notify the car owner by servicing center 101.
Fig. 2 has shown the structured flowchart according to first burglary-resisting installation of automobile multiple intelligent anti-theft system of the present invention.As shown in Figure 2, first burglary-resisting installation 102 comprises first radio-frequency module 204, authentication module 202, second radio-frequency module 205, real-time monitoring module 208, GPS module and mobile communication module 207.
In one embodiment of the invention, above-mentioned each functional module is work like this:
Car owner's identity information that first radio-frequency module, 204 wireless receiving non-contact intelligent keys are sent is transferred to authentication module 202.Authentication module 202 identity verification information, and state is set according to the checking result, as set up defences or withdraw a garrison.Then this is set up defences/state of withdrawing a garrison sends to second radio-frequency module 205, real-time monitoring module 208 and mobile communication module 207.On the one hand, send to second burglary-resisting installation 103 so that locking/unlock oil circuit and circuit is used to start the real-time monitoring that real-time monitoring module 208 gets into vehicle on the other hand by second radio-frequency module 205.Here, real-time monitoring module 208 is connected with multichannel invasion detecting device 104, at state real-time monitoring vehicle when setting up defences, and to mobile communication module 207 transmission illegal invasion information.Under the state status of setting up defences, the GPS module is obtained gps signal in real time, and the location information that is converted into vehicle sends to mobile communication module 207.To set up defences under the state illegal invasion information and the location information that receive of mobile communication module 207 sends to servicing center 101, by its processing and inform the car owner.
As shown in Figure 2, according to another embodiment of the present invention, first burglary-resisting installation 102 also comprises with the coupling of second radio-frequency module 205 and has been connected the wireless tamper processing module 203 of tamper detection line.This module is used for: receive the tamper warning message of second burglary-resisting installation 103 and send to mobile communication module 207, so that report to the police to servicing center 101; And on the tamper detection line, have dismounting during signal also via the tamper warning message of second radio-frequency module, 205 wireless transmissions self.
Fig. 3 has shown the structured flowchart according to second burglary-resisting installation of automobile multiple intelligent anti-theft system of the present invention.As shown in Figure 3, second burglary-resisting installation 103 comprises second radio-frequency module 305, wireless tamper processing module 303 and output driver module 301.
In one embodiment of the invention, above-mentioned each functional module is work like this:
Second radio-frequency module 305 is given output driver module 301 with the tamper warning message of the second frequency receiving condition (setting up defences/withdraw a garrison) and first burglary-resisting installation 102 through processing and transmitting.Wireless tamper processing module 303 is with 305 couplings of said second radio-frequency module and be connected the tamper detection line, is used for: receive the tamper warning message of said first burglary-resisting installation (102) and send to output driver module 301; And on the tamper detection line, have dismounting during signal also via the tamper warning message of said second radio-frequency module (305) wireless transmission self.The state or receive the tamper warning message if set up defences is then exported driver module 301 and export immediately to drive and be connected the relay on vehicle oil way and the circuit, makes its shutoff vehicle oil way and circuit, i.e. locking vehicle oil way and circuit.
According to the present invention, a kind of method that is used to realize the automobile multiple intelligent anti-theft system also is provided, its main processing step is described below:
S101, first burglary-resisting installation 102 receive the identity information of non-contact intelligent key emission and verify on first Radio Link;
S102, first burglary-resisting installation 102 be according to the checking setting as a result state of setting up defences/withdraw a garrison, and on second Radio Link, launch;
S103, second burglary-resisting installation 103 receive said state on second Radio Link, if be the state of withdrawing a garrison, and then unlock oil circuit and circuit;
If S104 is the state of setting up defences, then locking vehicle oil way and circuit, said first burglary-resisting installation 102 obtains in real time from the monitor message in the multichannel invasion detecting device 104 and through mobile communication and sends said monitor message to servicing center.
Fig. 4 is used to realize the diagram of circuit according to a part of anti-theft feature of the present invention in first burglary-resisting installation.
As shown in Figure 4, according to a method embodiment of the present invention, anti-theft feature is handled and is started from step 500, carries out processing such as system initialization.
In step 501, judge whether to exist non-contact intelligent key 105.If existence and checking are correct with the identity information that first high-frequency signal receives on first Radio Link; Then execution in step 507; On second Radio Link, send the message of withdrawing a garrison to second burglary-resisting installation 103 with second high-frequency signal; And notification service center 101 systems get into the state of withdrawing a garrison, by second burglary-resisting installation, 103 unlock oil circuit and circuit.
If do not exist or the authentication mal; Then execution in step 502; On second Radio Link, send the message of setting up defences to second burglary-resisting installation 103, and notification service center 101 systems get into the state of setting up defences, by second burglary-resisting installation, 103 locking vehicle oil way and circuit with second high-frequency signal.
Step 503 has judged whether car owner's mobile phone message informing of withdrawing a garrison.If any, then forward step 507 to, the processing of withdrawing a garrison.If no, execution in step 504, system is in the state of setting up defences, and monitoring vehicle also sends monitor messages through mobile communications network to servicing center 101 in real time, like GPS vehicle position information, illegal invasion information and anti-theft alarm message etc.
In step 504, further be refined as step 505, in this step; Judged whether the illegal invasion signal; If any, for example detect promptly that the car internal gas pressure is unusual, automobile vibration is unusual and by the towing state etc., then execution in step 509; Report servicing center 101 this illegal invasion information and GPS vehicle position informations through mobile communications network immediately, and notify the car owner by servicing center 101.
If it's not true, then execution in step 506.In this step, judged whether the anti-dismounting of equipment signal, if having, then execution in step 510, send the dismounting warning message to second burglary-resisting installation 103 with second high-frequency signal.
If it's not true, then execution in step 511, judge whether to receive the equipment dismounting warning message that second burglary-resisting installation 103 is sent.If then execution in step 512, report servicing center 101 through mobile communications network immediately, and notify the car owner by servicing center 101.If then execution in step 513 not.
Handle at last with step 513 and finish.
Fig. 5 is used to realize the flow process according to another part anti-theft feature of the present invention in second burglary-resisting installation.As shown in Figure 5, processing starts from step 600.In step 601, judge whether to receive the message of withdrawing a garrison, if, execution in step 605, unlock oil circuit and circuit are got back to step 600 then.
If then execution in step 602, judged whether the message of setting up defences not.If have then execution in step 606, locking vehicle circuit and oil circuit are got back to step 600 then.
If not, then execution in step 603, judge whether to detect equipment dismounting signal.If execution in step 607 is then sent the dismounting warning message to first burglary-resisting installation 102 with second high-frequency signal, get back to step 600 then.
If not, then execution in step 604, judge whether to receive the dismounting warning message of first burglary-resisting installation 102, if then execution in step 608, locking vehicle oil way and circuit are got back to step 600. then
If being left intact proceeds to end step 609 not.
According to embodiments of the invention, the frequency values of first high-frequency signal and second high-frequency signal can be the same or different, and be preferably 315MHz or 433MHz, and the frequency values of low-frequency signals is preferably 125KHz.Disturb for solving to a certain extent, two kinds of high-frequency signals can transmit in different time.This only as an example, and and unrestricted.In other cases, also can select for use other frequencies and other modes to transmit, can not produce interference each other when needing only three kinds of frequency.
Those skilled in the art will appreciate that under the situation that does not deviate from essence of the present invention and scope, also have many kind distortion and modification.Scope of the present invention is limited accompanying claims.
Claims (10)
1. an automobile multiple intelligent anti-theft system is characterized in that, comprises non-contact intelligent key (105), first burglary-resisting installation (102), second burglary-resisting installation (103), multichannel invasion detecting device (104) and servicing center, wherein
Store car owner's identity information in the said non-contact intelligent key (105) and on first Radio Link, sent said identity information; First burglary-resisting installation (102) is connected on the said multichannel invasion detecting device (104); And the said identity information of reception is verified on first Radio Link; According to checking setting as a result set up defences/withdraw a garrison state and on second Radio Link said state of emission, if the state of setting up defences then obtains from the vehicle monitor information of said multichannel invasion detecting device (104) in real time and sends said monitor message through mobile communication to said servicing center (101); Second burglary-resisting installation (103) receives the said state of said first burglary-resisting installation (102) emission, and comes locking/unlock oil circuit and circuit according to said state.
2. automobile multiple intelligent anti-theft system as claimed in claim 1 is characterized in that, all has the tamper detection line on said first burglary-resisting installation (102) and said second burglary-resisting installation (103).
3. automobile multiple intelligent anti-theft system as claimed in claim 2 is characterized in that, said first burglary-resisting installation (102) comprising:
First radio-frequency module (204) is used on first Radio Link, receiving said identity information;
Authentication module (202) with said first radio-frequency module (204) coupling, is used to verify said identity information, and according to said checking setting as a result with send said state;
Second radio-frequency module (205) and said authentication module (202) coupling are used on second Radio Link to the said state of said second burglary-resisting installation (103) emission from said authentication module (202);
Real-time monitoring module (208) is connected with said multichannel invasion detecting device (104), is used at said state real-time monitoring vehicle when setting up defences, and transmission illegal invasion information;
GPS module (206) is used to obtain gps signal to be converted into the location information of vehicle; And
Mobile communication module (207) is used to receive said state, said invasion signal and said location information, and sends to said servicing center (101) through mobile communication.
4. automobile multiple intelligent anti-theft system as claimed in claim 3; It is characterized in that; Said first burglary-resisting installation (102) also comprises the wireless tamper processing module (203) with said second radio-frequency module (205) coupling; Be used to receive the tamper warning message of said second burglary-resisting installation (103) and send to said mobile communication module (207), and on said tamper detection line, have dismounting also to launch the tamper warning message of self during signal via said second radio-frequency module (205).
5. automobile multiple intelligent anti-theft system as claimed in claim 2 is characterized in that, said second burglary-resisting installation (103) comprising:
Second radio-frequency module (305) is used on second Radio Link receiving the tamper warning message of said state and said first burglary-resisting installation (102), through handling also output;
Wireless tamper processing module (303); Be connected with said second radio-frequency module (305); Be used to receive the tamper warning message of said first burglary-resisting installation (102), and when on said tamper detection line, detection signal being arranged also via the tamper warning message of said second radio-frequency module (305) wireless transmission self; And
Output driver module (301); Be connected with said wireless tamper processing module (303) with said second radio-frequency module (305); Be used for according to said state locking/unlock oil circuit and the circuit that receives, according to the anti-theft alarm message locking vehicle oil way and the circuit of said first burglary-resisting installation (102) that receives.
6. an automobile multiple intelligent theft preventing method is characterized in that, said method comprising the steps of:
S101, first burglary-resisting installation receive the identity information of non-contact intelligent key emission and verify on first Radio Link;
S102, said first burglary-resisting installation be according to the checking setting as a result state of setting up defences/withdraw a garrison, and on second Radio Link, launch;
S103, second burglary-resisting installation receive said state on second Radio Link, if be the state of withdrawing a garrison, and then unlock oil circuit and circuit;
If S104 is the state of setting up defences, then locking vehicle oil way and circuit, said first burglary-resisting installation obtains in real time from the monitor message in the multichannel invasion detecting device and through mobile communication and sends said monitor message to servicing center.
7. automobile multiple intelligent theft preventing method as claimed in claim 6; It is characterized in that; When said method also is included in execution in step S104; Said first burglary-resisting installation and said second burglary-resisting installation judge separately whether cooresponding tamper detection line breaks off, if then cooresponding burglary-resisting installation just can be through second Radio Link to another burglary-resisting installation emission tamper warning message.
8. automobile multiple intelligent theft preventing method as claimed in claim 7; It is characterized in that; Obtain said monitor message and comprise and obtain illegal invasion information, tamper warning message and vehicle position information that wherein said tamper alarm message transmits on said second Radio Link.
9. automobile multiple intelligent theft preventing method as claimed in claim 6 is characterized in that said step S103 is further comprising the steps of: be under the situation of setting up defences at said state; Further judged whether car owner's mobile phone notice of withdrawing a garrison; If have, then unlock oil circuit and circuit be not if having; Then continue said step S104, monitor in real time.
10. automobile multiple intelligent theft preventing method as claimed in claim 6; It is characterized in that; Comprise the low frequency signal and first high-frequency signal on said first Radio Link, comprise second high-frequency signal on said second Radio Link, wherein first high-frequency signal is identical with second high-frequency signal or different.
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| CN2009101055509A CN101811491B (en) | 2009-02-24 | 2009-02-24 | Multiple intelligent anti-theft system and implementation method for automobiles |
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| CN2009101055509A CN101811491B (en) | 2009-02-24 | 2009-02-24 | Multiple intelligent anti-theft system and implementation method for automobiles |
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| CN101079158A (en) * | 2007-06-08 | 2007-11-28 | 深圳华强信息产业有限公司 | Automobile monitoring apparatus and monitoring method based on RFID technology |
| CN201163790Y (en) * | 2007-06-08 | 2008-12-10 | 深圳华强信息产业有限公司 | Vehicle anti-theft terminal based on RFID technique |
| CN101072153A (en) * | 2007-06-15 | 2007-11-14 | 启明信息技术股份有限公司 | CAN bus type automobile anti-theft alarm method and its device |
| CN101206790A (en) * | 2007-12-13 | 2008-06-25 | 常州天鹅科技有限公司 | GPS wireless lockless vehicle mounted orientation theft protection device as well as theft protection strategy |
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