A kind of automobile burglar key apparatus
Technical field
The invention belongs to technical field of automotive electronics, relate to a kind of automobile burglar key apparatus.
Background technology
In present automobile, most of anti-theft key system still adopts is that the flute profile key adds theftproof chip and forms.The flute profile key mainly is to adopt tooth bar to add rim lock cylinder to control; Because length and the diameter of rim lock cylinder and the restriction of mechanical accuracy of identification of tooth bar, in the lockset that causes producing in enormous quantities, the probability of tooth bar generation repetition is higher; According to statistics; Just there is the tooth bar of key of two locks identical or close in per 4000 locks,, is easy to occur the phenomenon that a lock can be opened by many keys so safety is low.In addition because the transreplication property of tooth bar, in very short time with regard to reproducible one identical key, so just further reduced the safety of lockset.If the problems referred to above in automobile key system, occur, then increased the stolen possibility of automobile greatly.
The Along with people's growth in the living standard, family car is popularized, and how to realize that this problem of vehicle anti-theft also becomes especially outstanding, and the orthodox car key no longer is suitable for automobile burglar because it has been cracked.
Along with development of science and technology and the people attention to safety, electronic intelligent lock at home and abroad emerges in succession, like Chinese patent document passive non-key control system (application number: 200820099125.4; Notification number CN201347051Y); This passive non-key control system comprises portable communication apparatus and the control unit for vehicle that is arranged at vehicle interior; It is characterized in that; Also comprise a Motronic control maps chip anti-theft system, said Motronic control maps chip anti-theft system comprises antitheft authentication module and anti-theft controller.Its principle is: adopt no key to get into & and start function; Use Motronic control maps chip anti-theft system to send radio signal portable communication apparatus transmission information is carried out encrypted authentication; Portable communication apparatus feeds back a signal and gives the Motronic control maps anti-theft system; When this feedback signal checking is passed through, can get into vehicle and start the engine.
Above-mentioned patent can solve the problem that the flute profile Key structure is simple and easy to duplicate; Improved the safety of automobile key to a certain extent; But sending enciphered message through radio signal in the such scheme exists easy in the problem of people's intercepting " eavesdropping "; Finally cause being cracked enciphered message by the people, anti-theft effect is not ideal enough, and still there is bigger stolen possibility in automobile.
Summary of the invention
The present invention is directed to existing technology and have the problems referred to above, proposed a kind of automobile burglar key apparatus, the automobile burglar key is cracked and the situation of key generation repetition itself takes place to reduce.
The present invention realizes through following technical proposal: a kind of automobile burglar key apparatus; Comprise vehicle-mounted module and key module; It is characterized in that; Described key module comprises outlet line plate with a plurality of splicing ears and the incoming line plate that has with the identical splicing ear of above-mentioned splicing ear quantity, and the splicing ear of any outlet line plate of any splicing ear incoming line plate of above-mentioned outlet line plate connects, and described vehicle-mounted module comprises identification chip and detects interface; Described detection interface comprises and identification chip bonded assembly input detection terminal and output detection terminal; When the key module joined the detection interface to, the mouth of said identification chip sent signal successively and is identified the corresponding input end of chip through the key module and receives the numbering of identification chip this mouth of record and input end; And with identification chip in predefined numbering compare, all numberings when all meeting identification chip send control signal.
In above-mentioned automobile burglar key apparatus; Described incoming line plate is provided with two and starts splicing ears and two and stop splicing ear; Two start between the splicing ear through the starting switch connection; Described two stop splicing ear through the halt switch connection; Described detection interface is provided with all with two detection starting terminals of identification chip bonded assembly and two and stops detection terminal, joins when detecting interface described identification chip in the key module and can control above-mentioned control signal according to starting switch and halt switch and export.
In above-mentioned automobile burglar key apparatus; Described identification chip be provided with the input pin identical with above-mentioned input splicing ear quantity and with the identical output pin of above-mentioned output splicing ear quantity; Input pin and output pin are set coding respectively; And output pin is connected with the relevant detection terminal through an output lead, and input pin is connected with the relevant detection terminal through an input lead.
In above-mentioned automobile burglar key apparatus, be connected with the low frequencies unit on the described identification chip, described key module also comprises the low frequency receiving element.Identification chip transmits to the key module through the low frequencies unit, in order to confirm car owner's identity.
In above-mentioned automobile burglar key apparatus, be connected with the high frequency receiving element on the described identification chip, described key module also comprises the high-frequency emission unit.The key module transmits to identification chip through the high-frequency emission unit, so that identification chip identification car owner identity.
In above-mentioned automobile burglar key apparatus, described input detection terminal has 48 at least, and the splicing ear on described output detection terminal, the outlet line plate and the quantity of the splicing ear on the incoming line plate are all identical with the input detection terminal.
In above-mentioned automobile burglar key apparatus, described output detection terminal, input detection terminal, detection starting terminal and stop the detection terminal assembled arrangement and become rectangle.
If in above-mentioned automobile burglar device, the splicing ear on the described outlet line plate, and the incoming line plate on splicing ear, start splicing ear and stop splicing ear respectively with output detection terminal, input detection terminal, detection starting terminal with stop the corresponding one by one arrangement of detection terminal.
In above-mentioned automobile burglar key apparatus; Described key module comprises the shell identical with the automobile logo; Above-mentioned outlet line plate and incoming line plate are fixed on the shell bottom surface; The vehicle steering center is provided with the groove that is complementary with above-mentioned shell, and described detection interface is arranged in the groove of bearing circle.Key module and automobile logo are combined, increased the aesthetic property of automobile key, make full use of interior space, and can not destroy the aesthetic property of automotive trim.
In above-mentioned automobile burglar key apparatus, above-mentioned starting switch and halt switch are arranged on around the described shell, also are provided with door contact interrupter and boot switch around the described shell.Can carry out corresponding operating by remote-control car through operating these switches.
In above-mentioned automobile burglar key apparatus, also be connected with actr on the described identification chip, described actr comprises Door Lock and back-up case lock.After identification chip is confirmed car owner's identity, carry out corresponding operation according to the remote signal control actr of key module emission.
Prior art is compared; This automobile burglar key apparatus adopts the encrypted physical mode, and array mode is stored within the chip, can't directly duplicate with equipment; And array mode is various, cracks the perhaps possibility of key generation repetition itself thereby reduced by the lawless person.
Description of drawings
Fig. 1 is the schematic circuit diagram of vehicle-mounted module in the embodiment of the invention.
Fig. 2 is the outlet line plate and the incoming line plate structure scheme drawing of key module in the embodiment of the invention.
Fig. 3 is the structural representation of key module housing in the embodiment of the invention (main bottom view).
Among the figure, 1, shell; 1a, square interface; 1b, starting switch; 1c, halt switch; 1d, door contact interrupter; 1e, boot switch.
The specific embodiment
Below be specific embodiment of the present invention, and combine accompanying drawing that technical scheme of the present invention is done further to describe, but the present invention is not limited to these embodiment.
If this automobile burglar device comprises key module and vehicle-mounted module, key module and vehicle-mounted module can be carried out wireless telecommunications.
Fig. 1 shows the schematic circuit diagram of vehicle-mounted module in the embodiment of the invention; This vehicle-mounted module comprises an identification chip and detects interface; Detect interface and comprise input detection terminal and output detection terminal, the input detection terminal is connected with mouth with the input end of identification chip respectively with the output detection terminal.In addition, detecting interface also is provided with all with identification chip bonded assembly detection starting terminal and stops detection terminal.On identification chip, also be connected with low frequencies unit, high frequency receiving element and actr, the low frequencies unit comprises TC4422 chip and low frequencies antenna; The high frequency receiving element comprises TDA5201 chip and high frequency receiving antenna; Actr comprises Door Lock and back-up case lock; Identification chip is also through signal wire (SW) and entire car controller ECU communication.In the present embodiment; Identification chip adopts the P89LPC936 chip; Identification chip be provided with the input pin identical with above-mentioned input splicing ear quantity and with the identical output pin of above-mentioned output splicing ear quantity; Input pin and output pin are set coding respectively, and output pin is connected with the relevant detection terminal through an output lead, and input pin passes through an input lead and is connected with the relevant detection terminal.In the present embodiment; The input detection terminal is 48 with the output detection terminal; The detection starting terminal with stop detection terminal and be two, input detection terminal, output detection terminal, detection starting terminal and stop detection terminal and constitute 10 * 10 square formation together.When not inserting the key module, all detection terminals are in off state.
Fig. 2 shows the electrical block diagram of key module; This key module comprises outlet line plate with a plurality of splicing ears and the incoming line plate that has with the identical splicing ear of above-mentioned splicing ear quantity, and the splicing ear of any outlet line plate of any splicing ear incoming line plate of outlet line plate connects.On the incoming line plate, be provided with and start splicing ear and stop splicing ear, start splicing ear with stop splicing ear respectively with detect the detection starting terminal on the interface and stop the detection terminal coupling.In addition, the key module also comprises high-frequency emission unit and low frequency receiving element, is respectively applied for the emission high-frequency signal and gives vehicle-mounted module and the low frequency signal that receives vehicle-mounted module emission.In the present embodiment; Splicing ear on splicing ear on the outlet line plate and the incoming line plate is 48; Start splicing ear and stop splicing ear and be two, the splicing ear on the splicing ear on the outlet line plate, the incoming line plate, start splicing ear and stop splicing ear and constitute 10 * 10 square formation together.
Containment structure scheme drawing like the described key module of Fig. 3; The key module comprises the shell 1 identical with the automobile logo; Outlet line plate and incoming line plate are fixed among the square interface 1a of shell 1 bottom surface, around shell 1, are provided with starting switch 1b, halt switch 1c, door contact interrupter 1d and boot switch 1e; Connect through starting switch 1b between two above-mentioned startup splicing ears, above-mentioned two stop splicing ear through halt switch 1c connection, and door contact interrupter 1d is used for the release of telecar door lock and locks, and boot switch 1e is used for the release of remote control boot and locks.Be provided with and the groove of above-mentioned shell 1 in the vehicle steering center, detect interface and be arranged in the groove of bearing circle, and when the key module embeds groove, engage with key shell 1 bottom surface outlet line plate and incoming line plate to coupling.In addition, better engage, can also limiting stopper auxiliary fixing key module be set in the key module bottom in order to make key module and detection interface.Key module and automobile logo are combined, increased the aesthetic property of automobile key, make full use of interior space, and can not destroy the aesthetic property of automotive trim.
Cipher mode of the present invention is following:
Terminal in 10 * 10 square formations on the vehicle-mounted module is numbered, and the 1-2 terminal is the detection starting terminal, and the 3-4 terminal is for stopping detection terminal, and the 5-48 terminal is the output detection terminal, and the 53-100 terminal is the input detection terminal; Terminal in 10 * 10 square formations on the key module is carried out reference numeral; Itself and vehicle-mounted module are mated; And adopt the mode of unordered binding in the key inside modules, promptly No. 5 terminals on the key module can with any binding in totally 48 terminals of No. 53 to No. 100 terminals, any binding in No. 6 terminals and remaining 47 terminals; No. 7 terminals ..., No. 52 terminal is connected with last terminal.Assembled arrangement knowledge by the basis can calculate, and the array mode of preceding 48 terminals (No. 5-No. 52) and back 48 terminals (No. 53-No. 100) has: 48!=48 * 47 * 46 ... 3 * 2 * 1 ≈ 1.24 * 10
61Plant the combined ciphering mode.
When not inserting the key module, all detection terminals are in off state on the vehicle-mounted module, after the key module is put into groove; Be the key module with after vehicle-mounted module is connected; On vehicle-mounted module and the key module corresponding terminal connect respectively (be on the vehicle-mounted module 1-100 terminal respectively with the key module on corresponding connection of 1-100 terminal), identification chip begins to detect Interface status automatically, gives No. 5 output detection terminals an electric signal; Detect cooresponding input detection terminal whether electric signal is arranged; If have, give No. 6 output detection terminals an electric signal, detect cooresponding ... After all detecting 48 input detection terminals correctly successively, chaufeur can be pressed starting switch 1b and start automobile.
Above-mentioned input detection terminal can suitably increase; Such as being increased to 50 or 60; The splicing ear on output detection terminal, the outlet line plate and the quantity of the splicing ear on the incoming line plate also increase accordingly, and the mode of combined ciphering has 50! like this Kind or 60! Kind (! The expression factorial), the possibility that is cracked further reduces.
Set forth the working process of this automobile burglar key apparatus below:
When chaufeur is held the key module and during near automobile to certain limit (for example 10-20 rice); Vehicle-mounted module medium and low frequency transmitter unit is given the key module through low frequencies antenna emission low frequency signal; The key module is fed back a high-frequency signal to vehicle-mounted module through the high-frequency emission module after receiving low frequency signal, to confirm whether mating with vehicle-mounted module of this key module.Chaufeur can be pressed the door contact interrupter 1d button on the key module when key module and vehicle-mounted module coupling, automobile is separated in advance locked door; Or when chaufeur has luggage, can press boot switch 1e Control of Automobile to the boot release.
After driver identity is confirmed and is got into operator's compartment; The key module is put into the groove of bearing circle central authorities; Make the key module join the detection interface to; The mouth of identification chip sends signal successively and is identified the corresponding input end of chip through the key module and receives, the numbering of identification chip this mouth of record and input end, and with identification chip in predefined numbering compare; Identification chip sends control signal and gives entire car controller when all numberings all meet, by the vehicle control unit controls engine starting.Need to prove that identification chip is to control above-mentioned control signal output according to starting switch 1b and halt switch 1c.
The present invention is through detecting the mode of interface contact detection and unordered encryption; Because this device does not adopt wireless signal to send enciphered message and the huge encrypted combination of quantity; Avoided that traditional Key structure duplicates simply easily, the problem of easy crack; There are not by the possibility of intercepting enciphered message the safety that has improved the automobile burglar key greatly, the possibility of minimizing vehicle thefts.Through automobile key and automobile logo are combined, saved the decoration space in the car and increased the aesthetic property of interior trim.Specific embodiment described herein only is that spirit of the present invention is made casehistory.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.