CN103150874B - A kind of theft preventing method and system based on Big Dipper short message function - Google Patents
A kind of theft preventing method and system based on Big Dipper short message function Download PDFInfo
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- CN103150874B CN103150874B CN201310038759.4A CN201310038759A CN103150874B CN 103150874 B CN103150874 B CN 103150874B CN 201310038759 A CN201310038759 A CN 201310038759A CN 103150874 B CN103150874 B CN 103150874B
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Abstract
The present invention proposes a kind of theft preventing method based on Big Dipper short message function, comprise step: set in advance warning message receiver address; The attitude data of Real-time Collection target device; According to described acceleration information, judge whether described carrier remains static, no, judge whether acceleration information and displacement exceed preset value, be, judge that target device is stolen, warning message is forwarded to described warning message receiver address by Big Dipper telecommunication satellite or mobile network. The present invention also provides a kind of burglary-resisting system based on Big Dipper short message function, comprises Big Dipper transceiver terminal, attitude transducer and controller; Controller, for storing the warning message receiver address setting in advance, and judges that whether target device is stolen; Described Big Dipper transceiver terminal, forwards warning message by Big Dipper telecommunication satellite; Described attitude transducer is containing Big Dipper navigator fix, for gathering the attitude data of target device. The method and system, can effectively report to the police in time.
Description
Technical field
The present invention relates to technical field of satellite communication, especially relate to a kind of based on Big Dipper short message functionTheft preventing method and system.
Background technology
In actual life, there is the production apparatus of a lot of individuals' valuables, home appliance or factory,Need to be kept properly, in case stolen. For example, automobile is private as a kind of comparatively valuable family or individualThere is property, special alarm is often installed.
A comparatively conventional car alarm, after whole burglary-resisting system is opened, if having non-Method moving automobile, opening car door, oil tank door, hood, luggage-boot lid, while connecing ignition circuit, anti-Steal device and give the alarm at once, light flash immediately, siren your writing cuts off starting circuit, igniting simultaneouslyCircuit, oil spout circuit, oil supply circuit, even automatic transmission circuit, makes automobile in the shape of paralysing completelyState, thus make robber cannot start automobile, but this kind of mode, if car owner's parking spot is apart from carMain residence is far away, or parking lot comparatively seals, and police whistle sound may not can be known by car owner, andAlthough the state that now makes vehicle cannot start in paralysis, does not hinder robber to utilize some handSection is dragged whole automobile away, if still rotary words of the wheel of for example this automobile can be passed through otherVehicle pulls to be dragged away, or robber steals automobile by comparatively large-scale driven equipment, therefore, and this kindAntitheft mode does not have protective effect.
Therefore, in prior art, a lot of vehicles are also provided with GPS burglary-resisting system, and this is at present comparativelyAdvanced security settings, except common antitheft, can also be in the time that automobile be stolen rapid tracking motor position,Thereby recover automobile. But the common burglar alarm of the cost ratio of GPS alarm is expensive, Er QiexuWant the service fee outside amount paid, its greatest weakness is that GPS alarm must cover mobile networkStolen equipment can be followed the tracks of in region, as in mountain area or whens remote districts, cannot follow the tracks of.
In addition, GPS burglary-resisting system, although can play the effect of bus location, often vapourAfter car is stolen, wait until when car owner finds, just can position, generally can give automobile for change, butPossible suffer certain damage. And, can not report to the police in time, may provide for robberSufficient time thief provides the sufficient time, looks for the special maintenance personal GPS navigation system of dismantling,Or interfering signal is set, stops the realization of location, the possibility that automobile is recovered is less.
And in prior art, the anti-theft measure of taking for automobile, than other equipment, for example workThe operated implement equipment that the cost of factory's factory building is higher etc., automotive theft proof system is still comparatively advanced, and veryMuch more expensive equipment, once steal, just cannot locate, thereby cannot give for change, to enterprise or individualPeople causes heavy losses. Meanwhile, when stolen article are not during in mobile network overlay area, cannot follow the tracks ofStolen equipment.
In sum, the anti-theft measure for some expensive equipments of the prior art, existence can not be timelyThe technical problem of reporting to the police by effective means.
Summary of the invention
The present invention proposes a kind of theft preventing method and system based on Big Dipper short message function, can be timelyUnusual circumstance is also reported to the police by effective way.
In order to achieve the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of theft preventing method based on Big Dipper short message function, comprise step:
Steps A, sets in advance warning message receiver address;
Step B, the attitude data of collection target device, at least comprises the acceleration number of degrees in described attitude dataAccording to;
Step C, according to described acceleration information, judges whether described carrier remains static, no,Enter step D, be, return to execution step B;
Step D, gathers Big Dipper locator data, according to described acceleration information and Big Dipper locator data, sentencesDisconnected accekeration whether exceedes the first predetermined threshold value and displacement exceedes the second predetermined threshold value, is, judges orderMarking device is stolen, enters step e, no, returns to step B;
Step e, is forwarded to described warning message by warning message by Big Dipper telecommunication satellite or mobile networkReceiver address.
Wherein, in described step D, gather Big Dipper locator data and comprise step:
According to regular time interval obtain the current geographic position of target device by Big Dipper telecommunication satelliteInformation;
Described step e comprises step:
By described geographical location information, attitude data, temporal information and described warning message receiver address groupBag, encapsulates according to Big Dipper short message agreement, sends to Big Dipper telecommunication satellite as warning message;
Receive the warning message that Big Dipper telecommunication satellite forwards.
Wherein, described steps A also comprises step:
Pre-recorded target device does not have the geographical location information when stolen.
Wherein, described step D comprises:
According to described acceleration information, judge whether accekeration exceedes the first predetermined threshold value, no, returnReturning execution step B, is to judge the geographical position of current geographic position information and the record of target deviceWhether information is consistent, no, judges that target device is stolen, enters step e, is to return to step B.
Wherein, described step is obtained the current geographic position information bag of target device by Big Dipper telecommunication satelliteDraw together:
Send Big Dipper short message, the current geographic position information of request target equipment to Big Dipper telecommunication satellite;
Receive the Big Dipper of the current geographic position information that includes target device of Big Dipper telecommunication satellite feedbackShort message.
Wherein, described step e also comprises step:
Using described geographical location information, attitude data and temporal information as warning message, described in being sent toWarning message receiver address.
The present invention also provides a kind of burglary-resisting system based on Big Dipper short message function, comprises Big Dipper transmitting-receiving eventuallyEnd, attitude transducer and controller; Described controller, receives for storing the warning message setting in advanceAddress, and according to described acceleration information, judge whether described carrier remains static, no, rootAccording to described acceleration information and Big Dipper locator data, judge accekeration whether exceed the first predetermined threshold value andWhether displacement exceedes the second predetermined threshold value, is, judges that target device is stolen; Described Big Dipper transceiver terminal,Be used for gathering Big Dipper locator data, and warning message is forwarded to described alarm signal by Big Dipper telecommunication satelliteBreath receiver address; Described attitude transducer, for the attitude data of Real-time Collection target device.
Wherein, described controller, does not also have the geographical location information when stolen for record object equipment.
Wherein, described Big Dipper transceiver terminal, also for according to regular time interval defend by Big Dipper communicationStar obtains the current geographic position information of target device.
Wherein, described Big Dipper transceiver terminal, for by described geographical location information, attitude data, timeInformation and described warning message receiver address group bag, encapsulate according to Big Dipper short message agreement, as reportAlarming information sends to Big Dipper telecommunication satellite.
Visible, the present invention at least has following beneficial effect:
A kind of theft preventing method and system based on Big Dipper short message function of the present invention, by setting in advance reportAlarming information receiver address, and the attitude data of Real-time Collection target device, according to acceleration information, judgementWhether described carrier remains static, and further judges afterwards whether the lasting time of acceleration exceedes againDefault duration, be, judge that target device is stolen, warning message is forwarded to by Big Dipper telecommunication satelliteDescribed warning message receiver address. For automobile, be at automobile flameout, and after closing of the door, this is anti-Theft system brings into operation, and now, according to normal condition, automobile should be all the time in relative with ground staticState, and if have lawless person to want to steal vehicle, be bound to make automobile within a period of time startingIn thering is the state of acceleration, in the time that acceleration continues one section of duration, can judge that automobile occurs reallyDisplacement, and if be not now by usual channel unlocking vehicle, be obviously that larceny has occurred,Therefore can conclude that automobile is stolen, thereby send warning message to the receiver address pre-setting, realShow and alarm, because the duration that acceleration is lasting is generally shorter, therefore, stolen to report from automobilePolice only needs very short time, has accomplished and alarm; In addition, obviously, this technology also can be used for commonHousehold electrical appliances, the monitoring of plant and equipment, this burglary-resisting system is installed on target device, can realize variousTarget device antitheft; , when warning, report to the police by Big Dipper telecommunication satellite meanwhile, take full advantage ofThe communication positioning function of big-dipper satellite, can prevent the locate failure causing due to GPS technical monopoly;
Further, according to regular time interval obtain the current of target device by Big Dipper telecommunication satelliteGeographical location information, positions target device in real time, and determine stolen after, by described geographyPositional information, attitude data, temporal information and described warning message receiver address group bag, short according to the Big DipperMessage protocol encapsulates, and sends to Big Dipper telecommunication satellite as warning message, realized target stolen afterTrack and localization, and because the precision of Big Dipper telecommunication satellite is 5-10 rice, therefore, can ensure higherSetting accuracy;
Further, pre-recorded target device does not have the geographical location information when stolen, and in conjunction with currentGeographical location information, judge whether really stolenly, strengthened the degree of accuracy of reporting to the police.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below by rightIn embodiment or description of the Prior Art, the accompanying drawing of required use is briefly described, apparentGround, the accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain the attached of other according to these accompanying drawingsFigure.
Fig. 1 is the flow process of the embodiment mono-of the theft preventing method based on Big Dipper short message function of the present inventionFigure;
Fig. 2 is the structural representation of the burglary-resisting system based on Big Dipper short message function of the present invention.
Detailed description of the invention
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with thisAccompanying drawing in inventive embodiments, retouches clearly and completely to the technical scheme in the embodiment of the present inventionState, obviously, described embodiment is the present invention's part embodiment, instead of whole enforcementExample. Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative workThe every other embodiment obtaining under prerequisite, belongs to the scope of protection of the invention.
Embodiment mono-
The embodiment of the present invention one provides a kind of theft preventing method based on Big Dipper short message function, referring to Fig. 1Shown in, comprise step:
Step S110, sets in advance warning message receiver address.
Wherein, the setting of warning message receiver address, can, for setting in advance, be used same all the timeReceiver address. Also can, in the time of each this anti-theft feature of unlatching, reset stolen alarm information and receiveAddress.
Step S111, the attitude data of Real-time Collection target device.
In described attitude data, at least comprise acceleration information. Preferably, described attitude data, comprises threeTie up full attitude data (hypercomplex number, Eulerian angles, spin matrix) and acceleration, three dimensional angular speed, three-dimensionalGeomagnetic field intensity data.
Step S112, according to described acceleration information, judges whether described carrier remains static,No, enter step S113, be to return to execution step S111.
Described inactive state, is relative static conditions, generally, for the relative static shape on groundState.
Step S113, gathers Big Dipper locator data, according to described acceleration information and Big Dipper locator data,Judge whether accekeration exceedes the first predetermined threshold value and displacement exceedes the second predetermined threshold value, is, judgeTarget device is stolen, enters step S114, no, returns to step S111.
Target device is initial what be moved, and its accekeration is often larger, therefore by judging that this addsWhether velocity amplitude exceedes default value, can to a certain degree react the state of target device, and this is first defaultThreshold value, can be determined according to actual conditions by those skilled in the art, for example, can be 3-10m/s2。
Due to relatively static object setting in motion, be subject to acceleration, and if acceleration is instantaneous,, in actual conditions, object can not produce obvious displacement, only receives one section of lasting acceleration,Can there is certain speed, produce displacement, therefore, a default time span also can be set, exceedThis duration, explanation produces displacement, otherwise is not subjected to displacement. Described default duration can be by this area skillArt personnel specifically determine according to actual conditions or empirical value or theoretical value, for example, and Ke Yiwei5-10 second.
The second predetermined threshold value, can be the safe distance of user's appointment, for example, and for a certain household electrical appliance,This four or two predetermined threshold value, issuable distance can normally use for these household electrical appliance time, for example,This second predetermined threshold value can be 5-20 rice.
Step S114, is forwarded to described warning message by warning message by Big Dipper telecommunication satellite and receives groundLocation.
While communicating with big-dipper satellite, need to be the discernible data of big-dipper satellite by Data Format TransformForm, encapsulates according to the consensus standard of Big Dipper short message.
Embodiment bis-
The embodiment of the present invention two provides a kind of theft preventing method based on Big Dipper short message function, comprises stepRapid:
Step S210: set in advance warning message receiver address, pre-recorded target device does not have stolenTime geographical location information.
Step S211: the attitude data of Real-time Collection target device.
Step S212, according to described acceleration information, judges whether described carrier remains static,No, enter step S213, be to return to execution step S211.
Step S213, gathers Big Dipper locator data.
Real-Time Monitoring acceleration information, in the time that acceleration information is greater than setting value, according between regular timeEvery the current geographic position information that obtains target device by Big Dipper telecommunication satellite.
The current geographic position information that obtains target device by Big Dipper telecommunication satellite comprises:
Send Big Dipper short message, the current geographic position information of request target equipment to Big Dipper telecommunication satellite;Receive the short report of the Big Dipper of the current geographic position information that includes target device of Big Dipper telecommunication satellite feedbackLiterary composition.
Step S213, according to described acceleration information, judges whether accekeration exceedes the first default thresholdValue, no, return to execution step S211, be to enter step S214.
Step S214, judges the current geographic position information of target device and the geographical location information of recordWhether consistent, no, judge that target device is stolen, enter step S214, be to return to step S211.
Step S215, is forwarded to described warning message by warning message by Big Dipper telecommunication satellite and receives groundLocation.
After definite carrier is stolen, by the coordinate information in current geographical position and attitude, temporal information groupBag, selects current available communication terminal, sends to the Big Dipper transceiver terminal with Big Dipper short message function.By described geographical location information, attitude data, temporal information and described warning message receiver address group bag,Encapsulate according to Big Dipper short message agreement, send to Big Dipper telecommunication satellite as warning message; AccordinglyMobile terminal device can receive the warning message that Big Dipper telecommunication satellite forwards.
Preferably, this warning message is also by mobile network communication module, and communication terminal receives after information,Immediately information is sent to the receiver address of setting. By described geographical location information, attitude data and timeBetween information as warning message, deliver to described warning message and receive ground by sending out a mobile network communication moduleLocation.
Preferably, when user receives after warning message, can send order and receive to the Big Dipper on target deviceSend out terminal, obtain the current positional information of burglary-resisting installation carrier.
Embodiment tri-
The embodiment of the present invention three provides a kind of burglary-resisting system based on Big Dipper short message function, referring to Fig. 2 instituteShow, comprise Big Dipper transceiver terminal, attitude transducer and controller.
Described controller, for storing the warning message receiver address setting in advance, and according to described accelerationDegrees of data, judges whether described carrier remains static, no, according to described acceleration information and northBucket locator data, judge whether accekeration exceedes the first predetermined threshold value and displacement and whether exceed second and presetThreshold value is to judge that target device is stolen.
Described Big Dipper transceiver terminal, has Big Dipper short message function, for communicating by letter with big-dipper satellite and locating,Particularly, for gathering Big Dipper locator data, and warning message is forwarded to institute by Big Dipper telecommunication satelliteState warning message receiver address.
Described attitude transducer, refers to adopt the biography of accelerometer and other acceleration measurements and speed, positionSensor, for the attitude data of Real-time Collection target device, detects acceleration, speed and the attitude of carrier.
Wherein, described attitude transducer, is MEMS sensor, comprises accelerometer and gyroscope.
Wherein, described controller, does not also have the geographical location information when stolen for record object equipment.
Preferably, described controller, is embedded microprocessor.
In the present embodiment, Big Dipper transceiver terminal, attitude transducer and controller are to be fixed on target deviceOn, can be fixed on the surface of target device, also can be fixed on the inside of target device.
Wherein, this system also comprises supplying cell, is used to equipment that power supply is provided.
Preferably, in the present embodiment, described Big Dipper transceiver terminal, also for according between regular timeEvery the current geographic position information that obtains target device by Big Dipper telecommunication satellite.
Preferably, described Big Dipper transceiver terminal, for by described geographical location information, attitude data, timeBetween information and described warning message receiver address group bag, encapsulate according to Big Dipper short message agreement, asWarning message sends to Big Dipper telecommunication satellite.
Preferably, this system, also comprises mobile network communication module, for realizing and mobile network communicationFunction is realization and the Transmit-Receive Unit of mobile network's communication function.
The method comprises: in the time that anti-theft feature is opened, have the Big Dipper transmitting-receiving of Big Dipper short message function eventuallyEnd was located once every the set time, used MEMS sensor to calculate present speed attitude one simultaneouslyInferior; According to the position of carrier and speed attitude, judge that whether the carrier of current device is stolen; Work as equipmentCarrier be identified when stolen, by Big Dipper short message function and mobile network initiatively or passiveSend the Big Dipper and point out antitheft message to specify fixed network communication terminal to user, realize anti-theft alarm function. ShouldMethod and apparatus can be realized the alarm communication system function while covering mobile network and without mobile network, withTime, then stolen in apparatus carriers, discovery and warning that can be early, realize more early give for change stolenArticle.
Finally it should be noted that: above embodiment is only in order to technical scheme of the present invention to be described, but not rightIts restriction; Although the present invention is had been described in detail with reference to previous embodiment, this area commonTechnical staff is to be understood that: its technical scheme that still can record aforementioned each embodiment is repaiiedChange, or part technical characterictic is wherein equal to replacement; And these amendments or replacement, noMake the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the theft preventing method based on Big Dipper short message function, is characterized in that, comprises stepRapid:
Steps A, sets in advance warning message receiver address;
Step B, the attitude data of collection target device, at least comprises in described attitude dataAcceleration information;
Step C, according to described acceleration information, judges whether carrier remains static,No, enter step D, be to return to execution step B;
Step D, arranges a default time span, judges that described carrier is in nonstaticWhether the time of state is greater than described time span, if so, gathers Big Dipper locator data, rootAccording to described acceleration information and Big Dipper locator data, judge whether accekeration exceedes first pre-If threshold value and displacement exceed the second predetermined threshold value, be, judge that target device is stolen, enterStep e, no, return to step B;
Step e, described in warning message is forwarded to by Big Dipper telecommunication satellite or mobile networkWarning message receiver address.
2. the theft preventing method based on Big Dipper short message function according to claim 1, itsBe characterised in that, in described step D, gather Big Dipper locator data and comprise step:
According to regular time interval obtain the current ground of target device by Big Dipper telecommunication satelliteReason positional information;
Described step e comprises step:
Described geographical location information, attitude data, temporal information and described warning message are connectReceive group of addresses bag, encapsulate according to Big Dipper short message agreement, send to as warning messageBig Dipper telecommunication satellite;
Receive the warning message that Big Dipper telecommunication satellite forwards.
3. the theft preventing method based on Big Dipper short message function according to claim 2, itsBe characterised in that, described steps A also comprises step:
Pre-recorded target device does not have the geographical location information when stolen.
4. the theft preventing method based on Big Dipper short message function according to claim 3, itsBe characterised in that, described step D comprises:
According to described acceleration information, judge whether accekeration exceedes the first predetermined threshold value,No, return to execution step B, be to judge the current geographic position information of target deviceWhether consistent, no with the geographical location information of record, judge that target device is stolen, enterStep e is to return to step B.
5. the theft preventing method based on Big Dipper short message function according to claim 2, itsBe characterised in that, described step is obtained the current geographical position of target device by Big Dipper telecommunication satelliteThe information of putting comprises:
Send Big Dipper short message to Big Dipper telecommunication satellite, the current geographical position of request target equipmentPut information;
Receive the current geographic position information that includes target device of Big Dipper telecommunication satellite feedbackBig Dipper short message.
6. the theft preventing method based on Big Dipper short message function according to claim 1, itsBe characterised in that, in described step D, gather Big Dipper locator data and comprise step:
According to regular time interval obtain the current ground of target device by Big Dipper telecommunication satelliteReason positional information;
Described step e also comprises step:
Using described geographical location information, attitude data and temporal information as warning message, send outDeliver to described warning message receiver address.
7. the burglary-resisting system based on Big Dipper short message function, is characterized in that, comprises northBucket transceiver terminal, attitude transducer and controller;
Described controller, for storing the warning message receiver address setting in advance, and according toAcceleration information, judges whether carrier remains static, no, arranges one when defaultBetween length, judge whether the time of described carrier in nonstatic state is greater than the described time longDegree, if so,, according to described acceleration information and Big Dipper locator data, judges accekerationWhether exceed the first predetermined threshold value and displacement and whether exceed the second predetermined threshold value, be, judgeTarget device is stolen, and wherein, described acceleration information is served as reasons, and described attitude transducer gathersThe acceleration of described carrier;
Described Big Dipper transceiver terminal, for gathering Big Dipper locator data, and warning message is logicalCross Big Dipper telecommunication satellite and be forwarded to described warning message receiver address;
Described attitude transducer, for the attitude data of Real-time Collection target device.
8. the burglary-resisting system based on Big Dipper short message function according to claim 7, itsBe characterised in that described controller does not also have the geographical position when stolen for record object equipmentPut information.
9. the burglary-resisting system based on Big Dipper short message function according to claim 8, itsBe characterised in that, described Big Dipper transceiver terminal, also for according to regular time interval by northBucket telecommunication satellite obtains the current geographic position information of target device.
10. the burglary-resisting system based on Big Dipper short message function according to claim 9,It is characterized in that, described Big Dipper transceiver terminal, for by described geographical location information, attitudeData, temporal information and described warning message receiver address group bag, assist according to Big Dipper short messageView encapsulates, and sends to Big Dipper telecommunication satellite as warning message.
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| CN103886698B (en) * | 2014-01-29 | 2016-11-16 | Quasion股份有限公司 | Portable anti-theft device and related anti-theft system and anti-theft method |
| CN104270407B (en) * | 2014-09-02 | 2018-05-08 | 南京莱斯信息技术股份有限公司 | The method shared position is realized based on Big Dipper short message |
| CN104200349A (en) * | 2014-09-10 | 2014-12-10 | 四川九洲电器集团有限责任公司 | Vehicle remote monitoring and alarming terminal, method and system based on BeiDou satellite I and BeiDou satellite II |
| CN105882804A (en) * | 2015-08-11 | 2016-08-24 | 乐视体育文化产业发展（北京）有限公司 | Theft preventing method and device for bicycle |
| CN106915330A (en) * | 2015-12-25 | 2017-07-04 | 长城汽车股份有限公司 | Anti-theft device for vehicle, system and vehicle |
| CN107024704A (en) * | 2017-05-15 | 2017-08-08 | 昆明理工大学 | A kind of Big Dipper GPS dual-mode localization method with Big Dipper short message function |
| CN108297831B (en) * | 2018-01-15 | 2022-01-04 | 深圳市智行畅联科技有限公司 | Automobile anti-theft system based on biological recognition and implementation method and implementation system thereof |
| CN109188467B (en) * | 2018-08-14 | 2021-03-26 | 杭州腾海科技有限公司 | Anti-theft method and system based on Beidou two-way communication function |
| CN113409530B (en) * | 2021-06-15 | 2022-12-13 | 筑橙科技(深圳)有限公司 | Construction robot anti-theft management method and system based on GPS |
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| CN102050083A (en) * | 2009-10-27 | 2011-05-11 | 沈阳晨讯希姆通科技有限公司 | Vehicle-mounted anti-theft device and using method thereof |
| JP4915884B1 (en) * | 2011-03-13 | 2012-04-11 | 株式会社Ｓａｒｕｓ Ｓｏｆｔ | A stolen vehicle tracking program running on a smartphone |
| CN202389338U (en) * | 2011-11-29 | 2012-08-22 | 潘立 | Air-pressure-sensing type Beidou/GPS (Global Positioning System) dual-mode positioning monitoring and communication anti-theft system |
| CN102868834A (en) * | 2012-09-04 | 2013-01-09 | 罗列 | Traffic rescue support calling device, traffic rescue support calling system and method |
| CN102862548B (en) * | 2012-10-23 | 2015-06-10 | 北京车网互联科技股份有限公司 | Global positioning system (GPS) vehicle anti-theft method and vehicle anti-theft device with acceleration transducer |
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