CN102096956B - Data processing method of remote-control no-key system for automobile - Google Patents
Data processing method of remote-control no-key system for automobile Download PDFInfo
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- CN102096956B CN102096956B CN 201010543804 CN201010543804A CN102096956B CN 102096956 B CN102096956 B CN 102096956B CN 201010543804 CN201010543804 CN 201010543804 CN 201010543804 A CN201010543804 A CN 201010543804A CN 102096956 B CN102096956 B CN 102096956B
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Abstract
The invention discloses a remote-control no-key system for automobiles and a data processing method thereof. The system is composed of an induction key system and a vehicle-mounted control system and is characterized in that the induction key system is composed of an LF (lower frequency) receiving coil, a key central processor, a key base station processor, a transponder, a storage and a UHF (ultra high frequency) key antenna module; the vehicle-mounted control system is composed of an LF emission coil, a UHF vehicle-mounted antenna module, a central door inductor, an igniter, a vehicle-mounted central processor, a vehicle-mounted base station processor, a door lock controller, a central lock controller and an engine control system. When data is processed, a communication link for identity authentication is is required to be built between the vehicle-mounted control system and the induction key system to open the door lock and ignite the engine. Even if people break into the vehicle, the vehicle engine can not be ignited without the key, so that the burglar-proof performance of the vehicle is greatly improved, and the automobile also has the function of one-button starting.
Description
Technical field
The invention belongs to technical field of automotive electronics, specifically, is a kind of data processing method of remote-control no-key system for automobile.
Background technology
Along with the development of technology, many keyless car entry system occurred now, but many old-fashioned onboard systems do not possess remote vehicle-mounted induction system function.In order to have the function of keyless access system, many technology manufacturer improves former car, the method that adopts is: the inductive coil of the security of former car lock (base station) part and the connecting line between the control circuit are cut off, take out inductive coil, simultaneously former car key is inserted inductive coil, be placed on vehicle-mounted shelter with transponder.Car owner person is as long as the connecting line between the upper anti-theft controller of connection and the inductive coil just can start automobile by a key like this.
Although but this method of modifying has been realized the startup of automobile one key, because transponder is placed in the automobile, stealer needs only and connects upper connecting line, the automobile that can drive away so equally, so the theftproof performance of automobile has just descended.
Summary of the invention
In order to allow refitted car realize the performance of Wireless remote control, reach simultaneously a key and start automobile and antitheft function, the present invention proposes a kind of data processing method of remote-control no-key system for automobile, the scheme that adopts is as follows:
A kind of remote-control no-key system for automobile, formed by induction key system and vehicle control syetem, its key is: described induction key system is comprised of LF receiving coil, key central processing unit, key base station processor, transponder, storer and UHF key Anneta module, described vehicle control syetem is comprised of LF transmitting coil, UHF car antenna module, central authorities' door inductor, lighter, vehicle-mounted central processor, cell on wheels processor, car door lock controller, central lock controller and engine control system, wherein:
Central authorities' door inductor: be used for the induction door handle and whether touched, when having the people to touch door handle, send enabling signal in the vehicle-mounted central processor;
LF transmitting coil and LF receiving coil: be used for realizing the key arousal function, the induction range that usually adopts coil coupling to realize is 1.5～2.5 meters;
Transponder: for generation of the authentication signal;
Key base station processor: be used for extracting the authentication signal of transponder and this authentication signal is encrypted processing;
UHF key Anneta module and UHF car antenna module: i.e. ultra-high frequency antenna, be used for realizing the remote radio communication between described induction key system and the vehicle control syetem, described remote radio communication distance can reach 15～25 meters farthest;
Cell on wheels processor: be used for the decryption processing of authentication signal and judge whether the authentication signal that receives belongs to correct authentication signal;
Car door lock controller: be used for the switching of control car door lock;
Central authorities' lock controller: be used for control automobile gears state, automobile gears comprises ON shelves, OFF shelves and ACC shelves, the corresponding relay of each gear, the state of each gear is set in central lock controller, come the switching of simulated automotive gear by the information interaction between central lock controller and the induction key control system, after vehicle control syetem was to induction key control system authentication OK, a push button of pressing on vehicle-mounted just can start up the car.
When automobile is in the OFF shelves, other electrical equipments that connect on automobile engine control system and the automobile CAN-bus all are in dormant state, engine can't be lighted, and automobile also can't start, when automobile is in the ACC shelves, other electrical equipments that connect on engine control system and the automobile CAN-bus all power on, this moment, electric apparatus mounted on vehicle can work, and engine can be lighted, but automobile can not start, only have when automobile is in the ON shelves, automobile could normally start;
Engine control system: be used for the startup of control engine igniting and automobile;
Key central processing unit: be used for coordinating and controlling the work of other functional modules of induction key system;
Vehicle-mounted central processor: be used for coordinating and controlling the work of other functional modules of vehicle control syetem.
Also be connected with button module on the described key central processing unit, described button module is used for realizing that the telecar door lock leaves/closes, car is sought in remote control and remote control boot ON/OFF.
The driver can realize remote opening door of remote-control and the function of closing the door by the button module in the induction key system, can also seek car and teleswitch boot by long-distance remote control, when the driver steps into the key induction range, system carries out identification automatically to be judged, if the driver of legal mandate, system then opens car door lock automatically, after the driver gets on the bus, only need to get final product the starting ignition switch by a button ignition switch, engine ignition, automobile starts automatically.
In order to strengthen system's theftproof performance, the invention allows for the data processing method in a kind of remote-control no-key system for automobile, data processing in the system comprises that the data of car door lock induction control system are processed and the data of keyless ignition control system are processed, wherein:
(I) data processing step of car door lock induction control system is:
Whether the first step: touched by described central authorities door inductor induction door handle, described central authorities door inductor sends enabling signal in the vehicle-mounted central processor if door handle is touched;
Second step: after the vehicle-mounted central processor is received described enabling signal, then outwards send the key wake-up signal by described LF transmitting coil, for some vehicles, at car door inductor is installed, ceaselessly launch the LF low frequency signal, as long as the induction key is in induction zone, key will be to LF low frequency signal of vehicle-mounted central processor emission, after low frequency signal is processed through the vehicle-mounted central processor, think the signal (the perhaps consistent identification signal of authentication information) of OK, so just return a signal to key, key will be waken up so.
The 3rd step: if when described induction key system is in the key induction region, described LF receiving coil then receives described key wake-up signal, if the key wake-up signal that the LF receiving coil receives is consistent with self intrinsic identity identification information, described induction key system will be waken up;
The 4th step: described key central processing unit control key base station processor obtains the authentication signal in the transponder, and described key base station processor is encrypted the authentication signal that obtains to process and forms the encrypting and authenticating signal;
The 5th step: described key central processing unit is wirelessly transmitted to UHF car antenna module with the encrypting and authenticating signal of key base station processor output by UHF key Anneta module;
The 6th step: described UHF car antenna module is sent to the encrypting and authenticating signal that receives in the vehicle-mounted central processor, and this vehicle-mounted central processor is sent to the cell on wheels processor with the encrypting and authenticating signal that obtains and is decrypted processing, thereby obtains authentication signal;
The 7th step: if the inner authentication information coupling of preserving of the authentication signal that the deciphering of cell on wheels processor obtains and vehicle-mounted central processor, described vehicle-mounted central processor then sends unlocking signal to described car door lock controller, so that car door lock is opened;
During the unlatching of car door lock, at first need to be coupled to wake up key by the induction between LF transmitting coil and the LF receiving coil, electromagnetic induction signal between the coil is the key wake-up signal, in case key is waken up, the key central processing unit then sends to vehicle control syetem with the authentication signal in the transponder and carries out authentication in the induction key system, the authentication signal is encrypted and decryption processing by described key base station processor and cell on wheels processor respectively in process of transmitting, so that information transmission security is reliable, vehicle control syetem mates the authentication signal that receives with the inner authentication information of preserving, if the verification passes, car door lock will be opened.Only need simply press the start key in the lighter, motor car engine will start automatically, realizes keyless ignition control.
(II) data processing step of described keyless ignition control system is:
The first step: detect the induction key system and whether be in the car, if key not in car, then engine control system is in dormant state;
Second step: if key is in the car, described vehicle-mounted central processor sends to the cell on wheels processor with the signal of " key exists in the car ", and described cell on wheels processor produces a random rolling code (S4) and sends to UHF key Anneta module through UHF car antenna module;
The 3rd step: described key central processing unit receives this random rolling code and sends described key base station processor and transponder to by UHF key Anneta module, this transponder returns an authentication signal that is complementary with described random rolling code immediately, and this authentication signal sends to UHF car antenna module through the encryption of key base station processor and from UHF key Anneta module;
The 4th step: described vehicle-mounted central processor receives the authentication signal that transponder is responded by UHF car antenna module, be decrypted processing through the cell on wheels processor, judge whether the authentication signal of receiving is complementary with the random rolling code that produces, if do not mate, illustrate to have potential safety hazard, automobile engine control system keeps dormant state;
The 5th step: if the authentication signal that receives in the 4th step is complementary with the random rolling code that produces, described vehicle-mounted central processor is then controlled described lighter, central lock controller and engine control system and is worked on power;
The 6th step: send firing command by described lighter to the vehicle-mounted central processor, described vehicle-mounted central processor is then by described engine control system control car engine ignition;
The 7th step: described vehicle-mounted central processor judges by described vehicle-mounted central processor whether automobile gears is in the P shelves and whether braking automobile slams, braking automobile is slammed if automobile gears is in the P shelves while, again press the button ignition switch in the lighter, automobile then actuated.
Also need during parking of automobile first gear to be hung over the P shelves, then press igniter button, realize stopping.
Remarkable result of the present invention is: system has changed the send mode of information, namely the passage of MTP message transfer part has been changed into the long distance wireless transmission, like this, need between vehicle control syetem and induction key system, set up the authentication passage in the time of the opening vehicle door lock, also need between vehicle control syetem and induction key system, set up the authentication passage during engine start, even someone opens the door into the car by force, in the situation that there is not the car key can not be with automobile starting, so that the automobile burglar performance is stronger, also carry out gear by central locking control in the one key start-up course and differentiate the automobile starting of having avoided maloperation to cause.
Description of drawings
Fig. 1 is the schematic block circuit diagram of induction key system among the present invention;
Fig. 2 is the schematic block circuit diagram of vehicle control syetem among the present invention;
Fig. 3 is the control flow chart of car door lock induction control system among the present invention;
Fig. 4 is the control flow chart of keyless ignition control system among the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Such as Fig. 1, shown in Figure 2, a kind of remote-control no-key system for automobile, formed by induction key system and vehicle control syetem, described induction key system is by LF receiving coil 11, key central processing unit 12, key base station processor 13, transponder 14, storer 15 and UHF key Anneta module 16 form, described vehicle control syetem is by LF transmitting coil 21, UHF car antenna module 22, central authorities' door inductor 23, lighter 24, vehicle-mounted central processor 25, cell on wheels processor 26, car door lock controller 27, central authorities' lock controller 28 and engine control system 29 form, wherein:
Central authorities' door inductor 23: be used for the induction door handle and whether touched, when having the people to touch door handle, send enabling signal in vehicle-mounted central processor 25;
Transponder 14: usually adopt the RFID REID, for generation of the authentication signal;
Key base station processor 13: be used for extracting the authentication signal of transponder 14 and this authentication signal is encrypted processing;
UHF key Anneta module 16 and UHF car antenna module 22: mainly adopt the A7105 chip to carry out modulation /demodulation, for the remote radio communication of realizing between described induction key system and the vehicle control syetem, described remote radio communication distance can reach 15～25 meters farthest;
Cell on wheels processor 26: be used for the decryption processing of authentication signal and judge whether the authentication signal that receives belongs to correct authentication signal;
Car door lock controller 27: be used for the switching of control car door lock;
Central authorities' lock controller 28: be used for control automobile gears state, automobile gears comprises ON shelves, OFF shelves and ACC shelves, the corresponding relay of each gear, the state of each gear is set in central lock controller, come the switching of simulated automotive gear by the information interaction between central lock controller and the induction key control system, after vehicle control syetem was to induction key control system authentication OK, a push button of pressing on vehicle-mounted just can start up the car.When automobile is in the OFF shelves, other electrical equipments that connect on automobile engine control system 29 and the automobile CAN-bus all are in dormant state, engine can't be lighted, and automobile also can't start, when automobile is in the ACC shelves, other electrical equipments that connect on engine control system and the automobile CAN-bus all power on, this moment, electric apparatus mounted on vehicle can work, and engine can be lighted, but automobile can not start, only have when automobile is in the ON shelves, automobile could normally start;
Engine control system 29: be used for the startup of control engine igniting and automobile;
Key central processing unit 12 and vehicle-mounted central processor 25 all adopt the STM32F103 microcontroller chip, wherein key central processing unit 12 is used for the work of coordination and other functional modules of control induction key system, and vehicle-mounted central processor 25 is used for coordinating and controlling the work of other functional modules of vehicle control syetem.
Also be connected with button module 17 on the described key central processing unit 12, described button module 17 is used for realizing that the telecar door lock leaves/closes, car is sought in remote control and remote control boot ON/OFF.
The driver can realize remote opening door of remote-control and the function of closing the door by the button module 17 in the induction key system, can also seek car and teleswitch boot by long-distance remote control, when the driver steps into the key induction range, system carries out identification automatically to be judged, if the driver of legal mandate, system then opens car door lock automatically, after the driver gets on the bus, only need to get final product the starting ignition switch by a button ignition switch, engine ignition, automobile starts automatically.
In order to strengthen system's theftproof performance, the invention allows for the data processing method in a kind of remote-control no-key system for automobile, data processing in the system comprises that the data of car door lock induction control system are processed and the data of keyless ignition control system are processed, wherein: as shown in Figure 3, the data processing step of car door lock induction control system is:
Whether the first step: touched by described central authorities door inductor 23 induction door handles, described central authorities door inductor 23 sends enabling signal S1 in vehicle-mounted central processor 25 if door handle is touched;
Second step: after vehicle-mounted central processor 25 is received described enabling signal S1, then outwards send key wake-up signal S2 by described LF transmitting coil 21;
The 3rd step: if when described induction key system is in the key induction region, 11 of described LF receiving coils receive described key wake-up signal S2, if the key wake-up signal S2 that LF receiving coil 11 receives is consistent with self intrinsic identity identification information, described induction key system will be waken up;
The 4th step: the authentication signal S3 that described key central processing unit 12 control key base station processors 13 obtain in the transponder 14, described key base station processor 13 are encrypted the authentication signal S3 that obtains to process and form encrypting and authenticating signal S3 ';
The 5th step: described key central processing unit 12 is wirelessly transmitted to UHF car antenna module 22 with the encrypting and authenticating signal S3 ' of key base station processor 13 outputs by UHF key Anneta module 16;
The 6th step: described UHF car antenna module 22 is sent to the encrypting and authenticating signal S3 ' that receives in the vehicle-mounted central processor 25, this vehicle-mounted central processor 25 is sent to cell on wheels processor 26 with the encrypting and authenticating signal S3 ' that obtains and is decrypted processing, thereby obtain authentication signal S3;
The 7th step: if the authentication signal S3 that 26 deciphering of cell on wheels processor obtain and vehicle-mounted central processor 25 inner authentication information couplings of preserving, 25 of described vehicle-mounted central processors send unlocking signal to described car door lock controller 27, so that car door lock is opened;
When the driver into the car after, only need simply press the start key in the lighter, motor car engine will start automatically, realizes keyless ignition control, the data processing step of described keyless ignition control system as shown in Figure 4:
The first step: detect the induction key system and whether be in the car, if key is not in car, then engine control system 29 is in dormant state, in specific implementation process, main by the low frequencies antenna is installed in car, whether can communicate by letter to judge whether key exists in the car with the induction key system by the car internal antenna;
Second step: if key is in the car, described vehicle-mounted central processor 25 sends to cell on wheels processor 26 with the signal of " key exists in the car ", and described cell on wheels processor 26 produces a random rolling code S4 and sends to UHF key Anneta module 16 through UHF car antenna module 22;
The 3rd step: described key central processing unit 12 receives this random rolling code S4 and sends described key base station processor 13 and transponder 14 to by UHF key Anneta module 16, this transponder 14 returns an authentication signal S5 who is complementary with described random rolling code S4 immediately, and this authentication signal S5 sends to UHF car antenna module 22 through 13 encryptions of key base station processor and from UHF key Anneta module 16;
The 4th step: described vehicle-mounted central processor 25 receives the authentication signal S5 that transponder 14 is responded by UHF car antenna module 22, be decrypted processing through cell on wheels processor 26, judge whether the authentication signal S5 that receives is complementary with the random rolling code S4 that produces, if do not mate, illustrate to have potential safety hazard, automobile engine control system 29 keeps dormant state;
The 5th step: if the authentication signal S5 that receives in the 4th step is complementary with the random rolling code S4 that produces, described vehicle-mounted central the processor 25 described lighters 24 of control, central lock controller 28 and engine control systems 29 work on power;
The 6th step: send firing command by described lighter 24 to vehicle-mounted central processor 25,25 of described vehicle-mounted central processors pass through described engine control system 29 control car engine ignitions;
The 7th step: described vehicle-mounted central processor 25 judges by described vehicle-mounted central processor 25 whether automobile gears is in the P shelves and whether braking automobile slams, braking automobile is slammed if automobile gears is in the P shelves while, again press the button ignition switch in the lighter 24, automobile then is activated.
Also need during parking of automobile first gear to be hung over the P shelves, then press igniter button, realize stopping.
Principle of work of the present invention is: during the unlatching of car door lock, at first need to be coupled to wake up key by the induction between LF transmitting coil 21 and the LF receiving coil 11, electromagnetic induction signal between the coil is the key wake-up signal, in case key is waken up, the key central processing unit then sends to vehicle control syetem with the authentication signal in the transponder and carries out authentication in the induction key system, the authentication signal is encrypted and decryption processing by described key base station processor 13 and cell on wheels processor 26 respectively in process of transmitting, so that information transmission security is reliable, vehicle control syetem mates the authentication signal that receives with the inner authentication information of preserving, if the verification passes, car door lock will be opened.
After the driver enters automobile, whether vehicle control syetem at first needs to detect the induction key and exists in the car, if exist in the car then send authentication information to the induction key, only receive the correct authentication signal that the transponder 14 in the induction key returns, only have after vehicle control syetem is received the correct authentication signal that transponder 14 returns, electronic equipment on the automobile bus just can work on power, even there is like this people to force open the door by force, in the situation that do not have key to start up the car, so that the security performance of automobile improves greatly.
Claims (3)
1. the data processing method of a remote-control no-key system for automobile is characterized in that:
At first set up described remote-control no-key system for automobile: described remote-control no-key system for automobile is comprised of induction key system and vehicle control syetem, described induction key system is by LF receiving coil (11), key central processing unit (12), key base station processor (13), transponder (14), storer (15) and UHF key Anneta module (16) form, described vehicle control syetem is by LF transmitting coil (21), UHF car antenna module (22), central authorities' door inductor (23), lighter (24), vehicle-mounted central processor (25), cell on wheels processor (26), car door lock controller (27), central authorities' lock controller (28) and engine control system (29) form, wherein:
Central authorities' door inductor (23): be used for the induction door handle and whether touched, when having the people to touch door handle, send enabling signal in vehicle-mounted central processor (25);
LF transmitting coil (21) and LF receiving coil (11): be used for realizing the key arousal function;
Transponder (14): for generation of the authentication signal;
Key base station processor (13): be used for extracting the authentication signal of transponder (14) and this authentication signal is encrypted processing;
UHF key Anneta module (16) and UHF car antenna module (22): for the remote radio communication of realizing between described induction key system and the vehicle control syetem;
Cell on wheels processor (26): be used for the decryption processing of authentication signal and judge whether the authentication signal that receives belongs to correct authentication signal;
Car door lock controller (27): be used for the switching of control car door lock;
Central authorities' lock controller (28): be used for control automobile gears position;
Engine control system (29): be used for the startup of control engine igniting and automobile;
Key central processing unit (12): be used for coordinating and controlling the work of other functional modules of induction key system;
Vehicle-mounted central processor (25): be used for coordinating and controlling the work of other functional modules of vehicle control syetem;
The data processing method of remote-control no-key system for automobile comprises the data processing method of car door lock induction control system and the data processing method of keyless ignition control system, wherein:
(I) data processing method of car door lock induction control system is:
Whether the first step: touched by central authorities' door inductors (23) induction door handle, described central authorities' door inductors (23) send enabling signal (S1) in vehicle-mounted central processor (25) if door handle is touched;
Second step: after vehicle-mounted central processor (25) is received described enabling signal (S1), then outwards send key wake-up signal (S2) by described LF transmitting coil (21);
The 3rd step: if when described induction key system is in the key induction region, described LF receiving coil (11) then receives described key wake-up signal (S2), if the key wake-up signal (S2) that LF receiving coil (11) receives is consistent with self intrinsic identity identification information, described induction key system will be waken up;
The 4th step: described key central processing unit (12) control key base station processor (13) obtains the authentication signal (S3) in the transponder (14), and described key base station processor (13) is encrypted the authentication signal (S3) that obtains to process and forms encrypting and authenticating signal (S3 ');
The 5th step: the encrypting and authenticating signal that described key central processing unit (12) is exported key base station processor (13) (S3 ') be wirelessly transmitted to UHF car antenna module (22) by UHF key Anneta module (16);
The 6th step: described UHF car antenna module (22) is sent to the encrypting and authenticating signal that receives (S3 ') in the vehicle-mounted central controller (25), this vehicle-mounted central controller (25) is sent to cell on wheels processor (26) with the encrypting and authenticating signal that obtains (S3 ') and is decrypted processing, thereby obtains authentication signal (S3);
The 7th step: if the authentication signal (S3) that cell on wheels processor (26) deciphering obtains and the inner authentication information coupling of preserving of vehicle-mounted central processor (25), described vehicle-mounted central processor (25) then sends unlocking signal to described car door lock controller (27), so that car door lock is opened;
(II) data processing method of keyless ignition control system is:
The first step: detect the induction key system and whether be in the car, if key not in car, then engine control system (29) is in dormant state;
Second step: if key is in the car, described vehicle-mounted central processor (25) sends to cell on wheels processor (26) with the signal of " key exists in the car ", and described cell on wheels processor (26) produces a random rolling code (S4) and sends to UHF key Anneta module (16) through UHF car antenna module (22);
The 3rd step: described key central processing unit (12) receives this random rolling code (S4) and sends described key base station processor (13) to and transponder (14) by UHF key Anneta module (16), this transponder (14) returns an authentication signal (S5) that is complementary with described random rolling code (S4) immediately, and this authentication signal (S5) sends to UHF car antenna module (22) through key base station processor (13) encryption and from UHF key Anneta module (16);
The 4th step: described vehicle-mounted central controller (25) receives the authentication signal (S5) that transponder (14) is responded by UHF car antenna module (22), be decrypted processing through cell on wheels processor (26), judge whether the authentication signal (S5) of receiving is complementary with the random rolling code (S4) that produces, if do not mate, illustrate to have potential safety hazard, automobile engine control system (29) keeps dormant state;
The 5th step: if the authentication signal (S5) that receives in the 4th step is complementary with the random rolling code (S4) that produces, described vehicle-mounted central controller (25) is then controlled described lighter (24), central lock controller (28) and engine control system (29) and is worked on power;
The 6th step: send firing command by described lighter (24) to vehicle-mounted central processor (25), described vehicle-mounted central processor (25) is then by described engine control system (29) control car engine ignition;
The 7th step: described vehicle-mounted central processor (25) judges by described vehicle-mounted central controller (25) whether automobile gears is in the P shelves and whether braking automobile slams, braking automobile is slammed if automobile gears is in the P shelves while, again press the button ignition switch in the lighter (24), automobile then is activated.
2. the data processing method of described remote-control no-key system for automobile according to claim 1, it is characterized in that: in setting up described remote-control no-key system for automobile: also be connected with button module (17) on the described key central processing unit (12), described button module (17) is used for realizing that the telecar door lock leaves/closes, car is sought in remote control and remote control boot ON/OFF.
3. the data processing method of described remote-control no-key system for automobile according to claim 1, it is characterized in that: the data processing method of described car door lock induction control system is:
Whether the first step: touched by central authorities' door inductors (23) induction door handle, described central authorities' door inductors (23) send enabling signal (S1) in vehicle-mounted central processor (25) if door handle is touched;
Second step: described vehicle-mounted central processor (25) ceaselessly outwards sends key wake-up signal (S2) by described LF transmitting coil (21);
The 3rd step: if when described induction key system is in the key induction region, described LF receiving coil (11) then receives described key wake-up signal (S2), if the key wake-up signal (S2) that LF receiving coil (11) receives is consistent with self intrinsic identity identification information, described induction key system will be waken up;
The 4th step: described key central processing unit (12) control key base station processor (13) obtains the authentication signal (S3) in the transponder (14), and described key base station processor (13) is encrypted the authentication signal (S3) that obtains to process and forms encrypting and authenticating signal (S3 ');
The 5th step: the encrypting and authenticating signal that described key central processing unit (12) is exported key base station processor (13) (S3 ') be wirelessly transmitted to UHF car antenna module (22) by UHF key Anneta module (16);
The 6th step: described UHF car antenna module (22) is sent to the encrypting and authenticating signal that receives (S3 ') in the vehicle-mounted central controller (25), this vehicle-mounted central controller (25) is sent to cell on wheels processor (26) with the encrypting and authenticating signal that obtains (S3 ') and is decrypted processing, thereby obtains authentication signal (S3);
The 7th step: if the authentication signal (S3) that cell on wheels processor (26) deciphering obtains and the inner authentication information coupling of preserving of vehicle-mounted central processor (25), described vehicle-mounted central processor (25) then sends unlocking signal to described car door lock controller (27), so that car door lock is opened.
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| CN102542766B (en) * | 2012-01-04 | 2013-09-18 | 杭州电子科技大学 | Device for directly starting engine and air conditioning system by remote control key |
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