CN103158672A - Automobile security system based on wireless signal - Google Patents
Automobile security system based on wireless signal Download PDFInfo
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- CN103158672A CN103158672A CN2013101124702A CN201310112470A CN103158672A CN 103158672 A CN103158672 A CN 103158672A CN 2013101124702 A CN2013101124702 A CN 2013101124702A CN 201310112470 A CN201310112470 A CN 201310112470A CN 103158672 A CN103158672 A CN 103158672A
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Abstract
The invention discloses an automobile security system based on a wireless signal. The automobile security system based on the wireless signal comprises a launcher arranged on an automobile and a receiver carried by an automobile owner. The launcher comprises a wireless signal launching unit used for launching the wireless signal. The receiver comprises a wireless signal receiving unit used for monitoring the wireless signal launched by the launcher so that strength of the wireless signal is obtained, a distance measurement unit used for measuring the distance between the receiver and the launcher according to the strength of the wireless signal and an alarm signal output unit used for outputting an alarm signal when the distance is larger than a threshold value of the preset distance. The automobile security system based on the wireless signal is capable of detecting the distance that an automobile moves in real time and generating alarm in time, simple in operation, low in cost and easy to realize.
Description
Technical field
The present invention relates to the automobile burglar technical field, relate in particular to a kind of automotive theft proof system based on wireless signal.
Background technology
Flourish along with China's economic, people's living standard improves day by day, and the application development of automobile is rapid, and the owning amount of all kinds of automobiles improves constantly.The popularization and application of automobile has brought facility for people's life, but the use of automobile has also proposed a great problem to people simultaneously---automobile burglar.Automobile burglar becomes the hot issue of car owners in living, and is also the focus that the automaker is concerned about.Present various automobile anti-theft method and product emerge in an endless stream, but the automobile burglar problem still solves fully, are that a high chi, evil spirit are high one zhang, and the vehicle thefts case still happens occasionally, for people's life and property brings very large loss.
At present, the car alarm of commonly using mainly contains mechanical safety device and gps satellite is located automotive theft proof system.Mechanical safety device is to rely on locking clutch, braking, throttle or steering handwheel, gear to reach antitheft purpose.Gps satellite location automotive theft proof system is to utilize global positioning satellite and electronic digit map to combine, the modernization high-tech automotive theft proof system that is aided with communication and anti-theft alarm and consists of can voicelessly be sent to alarm center with alarm message and vehicle position information.
But existing mechanical safety device is difficult for installing, need to make to open the lock with the key, and complex operation, and also easily destroyed.And gps satellite is located the expensive of automotive theft proof system, and the target market is too little, is mainly used in high-end vehicle.
Summary of the invention
The embodiment of the present invention proposes a kind of automotive theft proof system based on wireless signal, distance that can the Real-Time Monitoring moving vehicle, and in time give the alarm, simple to operate, and cost is low, is easy to realize.
The embodiment of the present invention provides a kind of automotive theft proof system based on wireless signal, comprises the projector that is arranged on automobile, and the receptor that supplies the car owner to carry;
Described projector comprises:
The wireless signal transmission unit is used for sending wireless signal;
Described receptor comprises:
The reception of wireless signals unit is used for monitoring the wireless signal that described projector sends, and obtains the intensity of described wireless signal;
Range cells is used for the intensity according to described wireless signal, the distance between calculating book receptor and described projector; With,
The alarm signal output unit is used in described distance during greater than the distance threshold value set the output alarm signal.
Further, described alarm signal output unit also is used for sending alarm command to described projector;
Described projector also comprises:
The alarm command receiving element is used for receiving the alarm command that described receptor sends, and carries out alarming processing according to described alarm command.
The automotive theft proof system based on wireless signal that the embodiment of the present invention provides, send wireless signal by the projector that is arranged on automobile, the receptor that is carried by the car owner scans the intensity of the wireless signal that projector sends, determine distance between automobile and car owner according to signal strength again, when described distance exceeds the distance threshold value of setting, receptor gives the alarm, and reminds the car owner in time to adopt an effective measure, and is stolen to prevent automobile.And receptor can also send alarm command to projector, controls projector and sends alarm, and the lawless person is served as warning.This automotive theft proof system can the Real-Time Monitoring moving vehicle distance, and in time give the alarm, simple to operate, easy to carry, and cost is low, is easy to realize.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the automotive theft proof system based on wireless signal provided by the invention;
Fig. 2 is the structural representation of another embodiment of the automotive theft proof system based on wireless signal provided by the invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Referring to Fig. 1, it is the structural representation of an embodiment of the automotive theft proof system based on wireless signal provided by the invention.
The embodiment of the present invention provides a kind of automotive theft proof system based on wireless signal, comprises the projector 1 that is arranged on automobile, and the receptor 2 that supplies the car owner to carry, and is specific as follows
Described projector 1 comprises:
Wireless signal transmission unit 11 is used for sending wireless signal.
Described receptor 2 comprises:
Reception of wireless signals unit 21 is used for monitoring the wireless signal that described projector sends, and obtains the intensity of described wireless signal;
Alarm signal output unit 23 is used in described distance during greater than the distance threshold value set the output alarm signal.Wherein, the alarm signal that alarm signal output unit 23 is exported has the effect of reminding the car owner, and the car owner can in time be adopted an effective measure, and is stolen to prevent automobile.
Wherein, the car owner can according to actual needs, arrange distance threshold value flexibly in receptor 2.For example, when automobile was parked in the residential quarter of car owner family, the car owner can estimate the distance between automobile and family, then sets distance threshold value in receptor, when receptor detect automobile with between distance when exceeding the distance threshold value of setting, give the alarm.
Further, described alarm signal output unit 23 also is used for sending alarm command to described projector 1;
Described projector 1 also comprises:
Alarm command receiving element 12 is used for receiving the alarm command that described receptor 2 sends, and carries out alarming processing according to described alarm command.For example, send warning signal, the lawless person is served as warning.
During concrete enforcement, projector 1 and receptor 2 all dispose wireless network card, are operated in ad hoc mode.MAC(Medium Access Control with described projector) address is as the service set SSID(Service Set Identifier of communication).
The wireless signal that projector 1 sends comprises a beacon frame; The source address of described beacon frame is the MAC Address of described projector 1, and the destination address of described beacon frame comprises the MAC Address of described receptor 2.
The automotive theft proof system based on wireless signal that the embodiment of the present invention provides can comprise one or more receptors.In the situation that only have a receptor, the source address of above-mentioned beacon frame is set to the MAC Address of this projector, and the destination address of beacon frame is the MAC Address of receptor.In the situation that a plurality of receptors are arranged, the source address of above-mentioned beacon frame is set to the MAC Address of this projector, and this beacon frame is a multicast frame, and the destination address of multicast is respectively the MAC Address of each receptor.Can ensure that thus the receptor that only has coupling just can receive the beacon frame that this projector sends.
In addition, the power and the aerial gain information that have also comprised the wireless signal that projector launches in above-mentioned beacon frame.
The built-in signal strength test module of the range cells of receptor can dynamically be tested the wireless signal strength that receives.In embodiments of the present invention, described range cells is calculated the distance between receptor and projector according to the intensity of described wireless signal, and the computing formula that adopts is:
Lp（dB）=20*log（f）+20*log（d）-?27.6；
Lp=?Pt?+?Gt?+?Gr-?Pr；
Wherein, f is the transmitting frequency of described wireless signal, d is the distance (being the propagation distance of signal) between described receptor and described projector, Lp is the decrement of described wireless signal, Pt is the emissive power of described projector, Gt is the gain of the emitting antenna of described projector, and Gr is the gain of the receiving wire of described receptor, and Pr is the received power of described receptor.
Therefore, as long as receptor obtains emissive power, emitter antenna gain and the received signal power of projector, just can calculate signal attenuation Lp.Then, according to formula d=10
[Lp+27.6-20*log (f)]/20, can calculate between projector and receptor apart from d.
The receptor that the present embodiment provides can be independently to install, and also can be arranged on panel computer, notebook or mobile terminal.
Below in conjunction with Fig. 2, the principle of work based on the automotive theft proof system of wireless signal that the embodiment of the present invention is provided is described in detail.
Referring to Fig. 2, it is the structural representation of another embodiment of the automotive theft proof system based on wireless signal provided by the invention.
Projector 1 is arranged on automobile, and receptor can be independently to install (receptor 202 as shown in Figure 2), can be also the device that is configured in the final terminals such as panel computer 201, notebook 203 or mobile terminal 204, and this receptor is carried by the car owner.Projector 1 and receptor all comprise wireless network card, are operated in Ad-hoc(point-to-point) pattern, with the MAC Address of the projector SSID as communication, so both guaranteed the corresponding car of a projector, also supported to use a plurality of receptors to receive signals simultaneously.The coverage of the wireless signal that in Fig. 2, circle partly sends for the projector 1 on automobile, in this scope, the receptor that the car owner carries can scan wireless signal strength.
The workflow based on the automotive theft proof system of wireless signal that the embodiment of the present invention provides is as follows:
S1, when the car owner leaves automobile, open projector and receptor.
S2, receptor can scan the wireless signal strength that projector sends, and go out the distance of car owner and automobile according to signal strength measurement.
S3, when the distance of car owner and automobile surpasses the threshold value of setting (comprising that receptor does not receive suddenly the situation of the wireless signal of projector), receptor can give the alarm to the car owner, reminds the car owner to adopt an effective measure in time to prevent that automobile is stolen robs.
S4, after receptor gives the alarm signal, simultaneously also can send alarm message, the warning thief to the projector in automobile.
The automotive theft proof system based on wireless signal that the embodiment of the present invention provides, send wireless signal by the projector that is arranged on automobile, the receptor that is carried by the car owner scans the intensity of the wireless signal that projector sends, determine distance between automobile and car owner according to signal strength, when described distance exceeds the distance threshold value of setting, receptor gives the alarm, and reminds the car owner in time to adopt an effective measure, and is stolen to prevent automobile.And receptor can also send alarm command to projector, controls projector and sends alarm, and the lawless person is served as warning.This automotive theft proof system can the Real-Time Monitoring moving vehicle distance, and in time give the alarm, simple to operate, easy to carry, and cost is low, is easy to realize.
The above is the preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also are considered as protection scope of the present invention.
Claims (5)
1. the automotive theft proof system based on wireless signal, is characterized in that, comprises the projector that is arranged on automobile, and the receptor that supplies the car owner to carry;
Described projector comprises:
The wireless signal transmission unit is used for sending wireless signal;
Described receptor comprises:
The reception of wireless signals unit is used for monitoring the wireless signal that described projector sends, and obtains the intensity of described wireless signal;
Range cells is used for the intensity according to described wireless signal, the distance between calculating book receptor and described projector; With,
The alarm signal output unit is used in described distance during greater than the distance threshold value set the output alarm signal.
2. the automotive theft proof system based on wireless signal as claimed in claim 1, is characterized in that, described alarm signal output unit also is used for sending alarm command to described projector;
Described projector also comprises:
The alarm command receiving element is used for receiving the alarm command that described receptor sends, and carries out alarming processing according to described alarm command.
3. the automotive theft proof system based on wireless signal as claimed in claim 1 or 2, is characterized in that, described projector and described receptor all dispose wireless network card, are operated in ad hoc mode;
The wireless signal that described projector sends comprises a beacon frame; The source address of described beacon frame is the MAC Address of described projector, and the destination address of described beacon frame comprises the MAC Address of described receptor.
4. the automotive theft proof system based on wireless signal as claimed in claim 3, is characterized in that, described range cells is according to the intensity of described wireless signal, the distance between calculating book receptor and described projector, and the computing formula that adopts is:
Lp（dB）=20*log（f）+20*log（d）-?27.6；
Lp=?Pt?+?Gt?+?Gr-?Pr；
Wherein, f is the transmitting frequency of described wireless signal, d is the distance between described receptor and described projector, Lp is the decrement of described wireless signal, Pt is the emissive power of described projector, Gt is the gain of the emitting antenna of described projector, and Gr is the gain of the receiving wire of described receptor, and Pr is the received power of described receptor.
5. the automotive theft proof system based on wireless signal as claimed in claim 1, is characterized in that, described receptor is arranged on panel computer, notebook or mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310112470.2A CN103158672B (en) | 2013-04-02 | 2013-04-02 | A kind of automotive theft proof system based on wireless signal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310112470.2A CN103158672B (en) | 2013-04-02 | 2013-04-02 | A kind of automotive theft proof system based on wireless signal |
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| CN103158672A true CN103158672A (en) | 2013-06-19 |
| CN103158672B CN103158672B (en) | 2015-09-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104287344A (en) * | 2013-07-17 | 2015-01-21 | 广州杰赛科技股份有限公司 | Smart wallet |
| CN105235634A (en) * | 2015-10-21 | 2016-01-13 | 黄海聆 | Monitoring method and device for vehicle |
| CN110386105A (en) * | 2018-04-20 | 2019-10-29 | 比亚迪股份有限公司 | Unlocking method of vehicle, system, mobile terminal and key controller |
| CN110459045A (en) * | 2019-07-24 | 2019-11-15 | 深圳市泰和安科技有限公司 | A kind of alarm method and device of passageway for fire apparatus blocking |
| CN111131509A (en) * | 2019-12-31 | 2020-05-08 | 深圳市乐途宝网络科技有限公司 | Dragging alarm method and system and vehicle thereof |
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| US20020024460A1 (en) * | 2000-02-25 | 2002-02-28 | Sharmila Ghosh | Securing system for motor vehicle |
| CN202080239U (en) * | 2011-04-26 | 2011-12-21 | 天津理工大学 | Automobile antitheft alarm device |
| CN202135182U (en) * | 2011-06-11 | 2012-02-01 | 方梁康 | Anti-lose device for mobile phone |
| CN102958153A (en) * | 2011-08-24 | 2013-03-06 | 无锡天锐科技发展有限公司 | Wireless sensor network based positioning method |
| CN202827860U (en) * | 2012-09-11 | 2013-03-27 | 雅迪科技集团有限公司 | Anti-theft alarm device |
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2013
- 2013-04-02 CN CN201310112470.2A patent/CN103158672B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020024460A1 (en) * | 2000-02-25 | 2002-02-28 | Sharmila Ghosh | Securing system for motor vehicle |
| CN202080239U (en) * | 2011-04-26 | 2011-12-21 | 天津理工大学 | Automobile antitheft alarm device |
| CN202135182U (en) * | 2011-06-11 | 2012-02-01 | 方梁康 | Anti-lose device for mobile phone |
| CN102958153A (en) * | 2011-08-24 | 2013-03-06 | 无锡天锐科技发展有限公司 | Wireless sensor network based positioning method |
| CN202827860U (en) * | 2012-09-11 | 2013-03-27 | 雅迪科技集团有限公司 | Anti-theft alarm device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104287344A (en) * | 2013-07-17 | 2015-01-21 | 广州杰赛科技股份有限公司 | Smart wallet |
| CN105235634A (en) * | 2015-10-21 | 2016-01-13 | 黄海聆 | Monitoring method and device for vehicle |
| CN110386105A (en) * | 2018-04-20 | 2019-10-29 | 比亚迪股份有限公司 | Unlocking method of vehicle, system, mobile terminal and key controller |
| CN110459045A (en) * | 2019-07-24 | 2019-11-15 | 深圳市泰和安科技有限公司 | A kind of alarm method and device of passageway for fire apparatus blocking |
| CN110459045B (en) * | 2019-07-24 | 2022-11-04 | 深圳市泰和安科技有限公司 | Fire fighting channel blockage alarming method and device |
| CN111131509A (en) * | 2019-12-31 | 2020-05-08 | 深圳市乐途宝网络科技有限公司 | Dragging alarm method and system and vehicle thereof |
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| CN103158672B (en) | 2015-09-02 |
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