CN101224735B - Anti-theft method of car acoustics and device thereof - Google Patents
Anti-theft method of car acoustics and device thereof Download PDFInfo
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- CN101224735B CN101224735B CN2008100259171A CN200810025917A CN101224735B CN 101224735 B CN101224735 B CN 101224735B CN 2008100259171 A CN2008100259171 A CN 2008100259171A CN 200810025917 A CN200810025917 A CN 200810025917A CN 101224735 B CN101224735 B CN 101224735B
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Abstract
The invention discloses an anti-theft method and an anti-theft device of a car sounding system and is characterized in that the invention uses an electronic car anti-theft device with a microprocessor for sending a protected signal or a disarming signal to a CPU of the car sounding system, and the CPU controls the car sounding system to switch between non-working status or working status according to the protected signal or the disarming signal that are received. Compared with the prior art, the invention has the advantages that the invention can effectively prevent the car sounding system from being stolen and has convenient use. .
Description
Technical field:
The present invention relates to a kind of method and device that prevents that auto audio equipment is stolen.
Background technology:
At present, Modern Car mostly is equipped with high end audio, and nearly 80% sound system belongs to original-pack antitheft sound equipment.But the anti-theft technique of auto audio equipment rests on the engineering office aspect with panel button input password basically.Most import brand; Like Audi, masses, BMW, the sound equipment of vehicles such as modern times configuration adopts this mode mostly, under certain situation condition, (has been stolen like sound equipment); Sound equipment can be automatically locked and can't start shooting, and has stolen the sound equipment that goes back but to have held not machine and can reduce greatly thief's interest.So just played certain theft-proof effect.But these sound equipments are by after locked, still easily by people's release at present.Make a general survey of present being seen auto audio equipment anti-theft system, the following open defect of ubiquity:
1, the sound equipment password default of same vehicle brand is identical, and these password defaults are that most technical personnel is known already.And can not change this password in most car owner's in-use vehicle processes, the vehicle that has even can not change this password, like this, just cause these sound equipments stolen after, as long as just can open sound equipment with input default password on the sound equipment panel.Like the Alpine sound equipment in the BMW system, its password default is exactly 62463 or 22222, and Kia series vehicle general code is 12345 or 6263, and Volvo vehicle general code is 3111 or 3113, and Honda vehicle general code is 3443 or the like.
The sound equipment password of the vehicle that 2, has is by user's change, and perhaps basic its password default is also grasped in producer's hand and do not run off outside.Technical personnel just can be decoded through logic analyser or special-purpose sound equipment demoder so.
Open sounder earlier and cover on one's body, pull down tape deck, expose the main circuit board of bottom, carefully check, open the fuselage lower cover in case of necessity, seek the IC of following several kinds of models: 93C46,85C82,24C81A, 4558 etc.These IC all are the scratch pad memories of 1kB, and sound equipment has write password in these memory devices when dispatching from the factory, and the content in the memory device can access and write again.Can weld down these memory devices with heat gun, be inserted in them on the private jack, access password (also can change password), and then burn-on memory device, re-enter with key according to the password that is accessed with logic analyser or dedicated decoders.These encryption memory are after receiving correct password, and to instruction of host CPU input, the order host CPU starts preamble, and sound equipment just can normal operation.
If do not have special-purpose logic analyser or sound equipment demoder, also can password IC 93C46 be welded to the Honda Accord vehicle, get final product permanent release, but lost anti-theft feature.
3, also have the battery short of electricity, change battery or the like and can break off under the situation of gross vehicle power supply, sound system is owing to dead electricity, and system tends to think that sound equipment is stolen, and the sound equipment that is automatically locked.The car owner knows that password can also own input password from the button of sound equipment panel, if the car owner does not know password, the point after sale that also need go back to producer carries out release, very is unfavorable for using.
So present auto audio equipment anti-theft feature is single, confidentiality is poor, uses inconvenient.
Summary of the invention:
Goal of the invention of the present invention is to provide a kind of theft preventing method and device thereof that can prevent auto audio equipment auto audio equipment stolen, easy to use.
The theft preventing method of auto audio equipment of the present invention is to realize like this; Vehicle electronics anti-joyride device through having microprocessor sends the electric signal of setting up defences or withdraw a garrison to the central microprocessor of the automobile AV device that has central microprocessor, and central microprocessor is in the state of quitting work or mode of operation according to the electric signal Control of Automobile AV device of setting up defences or withdraw a garrison that is obtained.Because setting up defences or withdrawing a garrison of vehicle electronics anti-joyride device all is to be accomplished by the electronic key device that can send one group of electronic cipher information to the microprocessor of vehicle electronics anti-joyride device (the double-direction radio radio-frequency recognition system that perhaps has IC-card like wireless transmission, receiving device); And the electron key of the transmission electronic encrypted message in the electronic key device is generally carried by automobile driver; Like this; Even the robber has stolen the automobile AV device that has central microprocessor; The robber also can't send the electric signal of withdrawing a garrison to central microprocessor, makes the automobile AV device in running order, even the automobile AV device that the robber robber has been stolen have central microprocessor can not use it; Thereby reduced the interest that the robber steals the automobile AV device, promoted auto audio equipment anti-stolen ability.And, the accident of prior art can not occur, as change automobile AV device behind the automobile batteries is not easy the phenomenon of release after locked appearance.
The anti-joyride device of auto audio equipment of the present invention is to realize like this; Constitute by the vehicle electronics anti-joyride device that has microprocessor, the automobile AV device that has a central microprocessor; The vehicle electronics anti-joyride device is provided with electronic key device; The electric signal output of electronic key device links to each other with the electric signal input of the microprocessor of vehicle electronics anti-joyride device, and the electric signal output of electronic key device or the electric signal output of microprocessor link to each other with the electric signal input of central microprocessor.During work; Electronic key device sends to microprocessor and unblanks or the locking electric signal; Microprocessor is in the perhaps blocking of unblanking according to the electric signal Control of Automobile electric anti-thief device of the electronic key device that is obtained; Simultaneously, send to central microprocessor according to the electric signal of the electronic key device that is obtained and to unblank or the locking electric signal, make central microprocessor Control of Automobile AV device be in work or the state that quits work.Electronic key device also can directly send to central microprocessor and unblank or the locking electric signal, makes central microprocessor Control of Automobile AV device be in work or the state that quits work.
Compared with present technology the present invention has and can effectively prevent auto audio equipment advantage stolen, easy to use.
Description of drawings:
Fig. 1 is a circuit controling drawing of the present invention.
The specific embodiment:
Combine accompanying drawing and embodiment that the present invention is described in further detail at present:
The theft preventing method of auto audio equipment of the present invention is to realize like this; Vehicle electronics anti-joyride device through having microprocessor sends the electric signal of setting up defences or withdraw a garrison to the central microprocessor of the automobile AV device that has central microprocessor, and central microprocessor is in the state of quitting work or mode of operation according to the electric signal Control of Automobile AV device of setting up defences or withdraw a garrison that is obtained.
As shown in the figure; The anti-joyride device of auto audio equipment of the present invention is to realize like this; Constitute by the vehicle electronics anti-joyride device 2 that has microprocessor 1, the automobile AV device 4 that has a central microprocessor 3; Vehicle electronics anti-joyride device 2 is provided with electronic key device 5; The electric signal output of electronic key device 5 links to each other with the electric signal input of the microprocessor 1 of vehicle electronics anti-joyride device 2, and the electric signal output of electronic key device 5 or the electric signal output of microprocessor 1 link to each other with the electric signal input of central microprocessor 3.Automobile AV device 4 is made up of radio reception module 6, multimedia digital playing module 7, audio power amplification module 8, loud speaker output module 9, demonstration output module 10; Electric signal output/the input of radio reception module 6, multimedia digital playing module 7, demonstration output module 10 links to each other with the electric signal I/O of central microprocessor 3; Radio reception module 6, multimedia digital playing module 7 link to each other with audio power amplification module 8, and audio power amplification module 8 links to each other with loud speaker output module 9.On central microprocessor 3, be connected with data memory 11; The longitude and latitude that be used to store the time of time, the outage of illegal open system, the GPS global positioning system during by illegal power-on is obtained or the like data; This will recover automobile or sound system provides force data for the car owner; As when relating to criminal offence, these data also can improve the probability that the police solve a case greatly.On central microprocessor 3, be connected with global position system 12 or (with) wireless data transmission module 13.
Claims (6)
1. the theft preventing method of an auto audio equipment; It is characterized in that vehicle electronics anti-joyride device through having microprocessor sends to the central microprocessor of the automobile AV device that has central microprocessor sets up defences or withdraws a garrison electric signal; Central microprocessor is in the state of quitting work or mode of operation according to the electric signal Control of Automobile AV device of setting up defences or withdraw a garrison that is obtained; The vehicle electronics anti-joyride device is provided with electronic key device; The electric signal output of electronic key device links to each other with the electric signal input of the microprocessor of vehicle electronics anti-joyride device, and the electric signal output of electronic key device or the electric signal output of microprocessor link to each other with the electric signal input of central microprocessor.
2. the anti-joyride device of an auto audio equipment; It is characterized in that constituting by the vehicle electronics anti-joyride device that has microprocessor, the automobile AV device that has a central microprocessor; The vehicle electronics anti-joyride device is provided with electronic key device; The electric signal output of electronic key device links to each other with the electric signal input of the microprocessor of vehicle electronics anti-joyride device, and the electric signal output of electronic key device or the electric signal output of microprocessor link to each other with the electric signal input of central microprocessor.
3. the anti-joyride device of auto audio equipment according to claim 2; It is characterized in that the automobile AV device is made up of radio reception module, multimedia digital playing module, audio power amplification module, loud speaker output module, demonstration output module; Electric signal output/the input of radio reception module, multimedia digital playing module, demonstration output module links to each other with the electric signal I/O of central microprocessor; Radio reception module, multimedia digital playing module link to each other with the audio power amplification module, and the audio power amplification module links to each other with the loud speaker output module.
4. according to the anti-joyride device of claim 2 or 3 described auto audio equipments, it is characterized in that on central microprocessor, being connected with data memory.
5. according to the anti-joyride device of claim 2 or 3 described auto audio equipments, it is characterized in that on central microprocessor, being connected with global position system or wireless data transmission module or global position system and wireless data transmission module.
6. the anti-joyride device of auto audio equipment according to claim 4 is characterized in that on central microprocessor, being connected with global position system or wireless data transmission module or global position system and wireless data transmission module.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100259171A CN101224735B (en) | 2008-01-21 | 2008-01-21 | Anti-theft method of car acoustics and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100259171A CN101224735B (en) | 2008-01-21 | 2008-01-21 | Anti-theft method of car acoustics and device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101224735A CN101224735A (en) | 2008-07-23 |
| CN101224735B true CN101224735B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100259171A Expired - Fee Related CN101224735B (en) | 2008-01-21 | 2008-01-21 | Anti-theft method of car acoustics and device thereof |
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| Country | Link |
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| CN (1) | CN101224735B (en) |
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| CN101224735A (en) | 2008-07-23 |
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