CN101457610A - Non-key system for automobile and communication encrypting method thereof - Google Patents
Non-key system for automobile and communication encrypting method thereof Download PDFInfo
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- CN101457610A CN101457610A CN 200910020805 CN200910020805A CN101457610A CN 101457610 A CN101457610 A CN 101457610A CN 200910020805 CN200910020805 CN 200910020805 CN 200910020805 A CN200910020805 A CN 200910020805A CN 101457610 A CN101457610 A CN 101457610A
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Abstract
The invention discloses an automobile keyless system, comprising an inno tech used for inducing the low frequency induction signals sent by a master control mechanism and transmitting the remote control operation command signals, the master control mechanism used for responding to the signals of the inno tech and carrying out corresponding process and operation and an executing mechanism used for executing an operation command sent by the master control mechanism to drive corresponding electric devices to move, wherein the inno tech is connected with the master control mechanism, the master control mechanism is also connected with the executing mechanism and a primary circuit inside the automobile. Regarding the communication encryption method for the automobile keyless system of the invention, the study process of the inno tech and the master control mechanism is carried out at first, and then the communication process of the inno tech and the master control mechanism is carried out. The automobile keyless system and the communication encryption method thereof solve the problems of redundancy in opening and closing door locks of the present automobiles and potential safety hazard of communication in the system.
Description
Technical field
The invention belongs to technical field of automotive electronics, relate to a kind of vehicle switch vehicle lockset, be specifically related to a kind of non-key system for automobile, the invention still further relates to the communication encrypting method of this system.
Background technology
At present, the vehicle switch door lock generally adopts the high-frequency wireless communication mode of button remote control, has certain not convenient property (need key, button) and insecurity (forget when leaving car button lock a door, telecommand is hunted down or cracks).Cipher mode mainly is by traditional encryption mode and comparatively emerging KEELOQ rolling code AES, for KEELOQ rolling code AES, at first, its safety is based on key and the kind subcode SEED of dispatching from the factory, the key that dispatches from the factory generates (under the safe mode) by dispatch from the factory sequence number and vendor code, kind subcode, and vendor code is fixed, and sequence number, kind subcode send by plaintext in study, have very big potential safety hazard, the key that the dispatches from the factory possibility that will cause being cracked that leaks increases greatly; Secondly because this algorithm realized by hardware, can only be to the encryption of several function buttons, cause expanded function a little less than, can't be used for general data and encrypt.
Summary of the invention
The purpose of this invention is to provide a kind of non-key system for automobile, the security hidden trouble that has solved the loaded down with trivial details property of present vehicle switch car door lock and communicated by letter in the switch door lock system at present.
Another object of the present invention provides the communication encrypting method of said system.
The technical solution adopted in the present invention is that a kind of non-key system for automobile comprises
The induction remote controller is used to respond to low frequency induction signal and the transmission remote manipulation instruction signal that master control mechanism sends;
Master control mechanism is used for the signal of respond to remote controller and does corresponding process operations;
Executing agency is used to carry out the operational order that master control mechanism sends, to drive corresponding electric device action;
Induction remote controller wherein is connected with master control mechanism, and master control mechanism also is connected with former car circuit in executing agency and the car.
Another technical scheme of the present invention is, a kind of communication encrypting method that is applied to said system carries out according to the following steps:
1) induction remote controller and master control mechanism learning process:
Induction remote controller learning process:
Step 1: the induction remote controller produces random number A and random number B, and random number A is as the key element, and random number B is as synchronous code and storage;
Step 2: the random number A that vendor code, sequence number, step 1 are obtained generates key 1 by key schedule, storage key 1, key schedule select for use a gust iteration, displacement or non-linear table in conjunction with in a kind of;
Step 3: generate data expressly according to vendor code, sequence number, synchronous code, the 1 pair of data plain text encryption of key with step 2 obtains produces encrypted packets 1; Random number A and encrypted packets 1 that step 1 is obtained are linked in sequence, and as packet 1, send to master control mechanism;
Step 4: synchronous code is added 1 produce new synchronous code;
Step 5: the new synchronous code that vendor code, sequence number integrating step 4 are obtained constitutes new data expressly, 1 pair of new data plain text encryption of key with step 2 obtains obtains encrypted packets 2, and sequence number and encrypted packets 2 are linked in sequence, as packet 2, send to master control mechanism;
Master control mechanism learning process:
Step 1: receive packet 1, extract the unencrypted data segment, i.e. random number A;
Step 2: receive packet 2, extract the unencrypted data segment, i.e. sequence number;
Step 3: the random number A that vendor code, step 1 are obtained, the sequence number that step 2 obtains generate key 2 by key schedule, storage key 2, key schedule select for use a gust iteration, displacement or non-linear table in conjunction with in a kind of;
Step 4:, obtain the data plaintext of packet 1 and the data plaintext of packet 2 with key 2 difference decrypted data packet 1 and the packets 2 that step 3 obtains;
Step 5: the data of the packet 1 that obtains according to step 4 expressly and the data of packet 2 plaintext, judge whether encryption is successful, if the vendor code of packet 1 data in expressly and the packet 2 data vendor code in expressly is identical, and it is consistent with the vendor code of master control mechanism, then continue, otherwise the study failure; If the sequence number in sequence number in the packet 1 data plaintext and the packet 2 data plaintext is inequality, then study failure, otherwise continue; If the synchronous code of packet 2 data in expressly is bigger by 1 than the synchronous code of packet 1 data in expressly, learning success then, otherwise study failure; Behind the learning success packet 1 data expressly the and key 2 that generates in identical sequence number, the step 3 in expressly of packet 2 data and the synchronous code in the packet 2 data plaintext store;
2) induction remote controller and master control mechanism communication process:
Induction remote controller communication process:
Step 1: definite data message that will send;
Step 2: the data message that will send, synchronous code are formed expressly, encrypt with the key 1 of step 2 generation in the induction remote controller learning process and generate encrypted packets 3, and sequence number and encrypted packets 3 are sent to master control mechanism;
Step 3: the induction remote controller is changed to accepting state, waits for the affirmation signal that master control mechanism beams back or upgrades the synchronous code packet; If setting-up time internal induction remote controller receives the affirmation signal that master control mechanism beams back, storage again after the synchronous code of then responding to the remote controller storage adds 1, a sign off; If setting-up time internal induction remote controller is received the renewal synchronous code packet that master control mechanism beams back, then respond to remote controller and receiving new synchronous code more after the new data packets, new synchronous code is extracted in deciphering, new synchronous code subtracted be stored as current synchronous code after 1, the current synchronous code of the data message of step 1, new storage is formed expressly, the key 1 that generates with step 2 in the induction remote controller learning process is encrypted this and is expressly generated ciphertext, and the ciphertext of sequence number and generation is sent to master control mechanism; If setting-up time internal induction remote controller had both been confiscated the affirmation signal that master control mechanism beams back, also confiscate the packet that upgrades synchronous code, the then operation of repeating step 2;
Master control mechanism communication process:
Step 1: receive step 2 sends in the induction remote controller communication process encrypted packets 3 and sequence number;
Step 2: whether the sequence number that determining step 1 receives was learnt, if do not learn, then abandoned encrypted packets 3; Then continued if learn;
Step 3: decrypt encrypted data bag 3 extracts relevant information, the difference of the synchronous code of step 5 storage in synchronous code that obtains after the judgement deciphering and the master control mechanism learning process, if the synchronous code of 1 storage adds 1 also storage again, send confirmation signal for the induction remote controller, and control executing agency carry out relevant operation; Otherwise continue;
Step 4: specify a random number to give the induction remote controller at random as new synchronous code, the relevant information that 2 pairs of new synchronous codes of key that generate with step 3 in the master control mechanism learning process and last step obtain is encrypted, obtain encrypted packets 4, sequence number and encrypted packets 4 that step 1 is received send to the induction remote controller;
Step 5: the synchronous code of step 5 storage in the master control mechanism learning process is updated to step 4 synchronous code and the storage of appointment at random;
Step 6: main control computer is set up in accepting state, the single sign off.
The inventive method is compared than the KEELOQ algorithm, has following characteristics:
1, KEELOQ can only encrypt several buttons, can not be to the data packet encryption, the key of each study is fixed, the sequence number that produces key is not high by expressly sending safety, as long as vendor code is by broken then information dropout, it is variable that the present invention adds the key of at every turn learning after the random number, has improved safety.
2, the KEELOQ key is that vendor code+sequence number+kind of subcode (under the safe mode) produces, and key of the present invention is to produce with vendor code+sequence number+random number, even vendor code is broken, system is safety still.
3, in the encryption method of the present invention, specified by master control mechanism when synchronous code is made mistakes rather than specified by the induction remote controller, this has just effectively prevented illegally catching data.
4, the inventive method has certain versatility, not only can be used for non-key system for automobile of the present invention, also can be applicable to small-sized LAN, or needs the network system of high safety, is widely used.
Description of drawings
Fig. 1 is the structural representation of non-key system for automobile of the present invention;
Fig. 2 is the learning process figure that responds to remote controller and master control mechanism in the communication encrypting method of the present invention;
Fig. 3 is a communication flow diagram of responding to remote controller and master control mechanism in the communication encrypting method of the present invention.
Wherein, 1. induction remote controller, 2. master control mechanism, 3. executing agency, 4. former car circuit, 5.MCU module.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
The structure of non-key system for automobile of the present invention as shown in Figure 1, comprises the induction remote controller 1 and the master control mechanism 2 that are connected, and MCU module 5 is arranged in the master control mechanism 2, and master control mechanism 2 goes back and executing agency 3, former car circuit 4 interconnect.Wherein respond to being connected by radio communication between remote controller 1 and the master control mechanism 2 and realize that the signal of main transmission is remote signal and induced signal, remote signal comprises that door lock is closed in opening door of remote-control lock, remote control, car, remote control boot are sought in remote control; Induced signal opens the door to lock with induction for induction and closes door lock.Remote signal and induced signal all can be realized switch door lock, and remote control mode helps out.Master control mechanism 2 outputs control signals to executing agency 3 by the I/O port, and the triggering signal of former car circuit 4 inputs to master control mechanism 2 simultaneously, by master control mechanism 2 it is carried out corresponding judgment and handles.
The course of work of non-key system for automobile of the present invention is: the no key induction remote controller 1 that the car owner carries is in the distance range of distance automobile 2-3 rice the time, the low frequencies signal activation that induction remote controller 1 is controlled by the MCU module 5 in the master control mechanism 2, carry out the identification of ID coupling, and respond with high-frequency data, through mutual emission and reception repeatedly, induction remote controller 1 passes through with the ID coupling of master control mechanism 2, then master control mechanism 2 send the lock action command that opens the door accordingly can for executing agency 3, has realized that no key induction opens the door.
When automobile stopped to travel, induction remote controller 1 left outside the scope of 3 to 5 meters in car with the car owner, and the LF communication of the MCU module 5 in the master control mechanism 2 detects induction remote controller 1 not in scope, then carried out and locked a door, and open anti-theft state.The not success (not shutting as door) if lock a door, then master control mechanism 2 can drive corresponding acousto-optic warning, reaches the purpose that the prompting car door does not lock.When automobile be subjected to surpassing the vibrations of normal amplitude, by the illegal door or when illegally being started, master control mechanism 2 will drive the corresponding sound and light alarm of execution of driving, and actions such as deenergizing, oil-break road are to reach antitheft purpose.
The public frequency range of 433MHz is used in system's medium-high frequency communication, what low frequency used is the 125KHz frequency range, for high frequency antenna, high-frequency model adopts lead formula antenna in the car, 1 of induction remote controller adopts the PCB antenna, low-frequency antenna all adopts inductance coil, realizes the transmission of low-frequency data by the mutual inductance of inductance coil.The low frequencies signal is in the timing working pattern in the adjustable time interval simultaneously, and whether detecting real-time responds to remote controller 1 in its scope.
The communication encrypting method of non-key system for automobile of the present invention is at first responded to remote controller 1 and master control mechanism 2 learning processes, responds to remote controller 1 and master control mechanism 2 communication process again.
1) induction remote controller 1 and master control mechanism 2 learning processes are specifically implemented as shown in Figure 2 according to the following steps:
Induction remote controller 1 learning process:
Step 1: induction remote controller 1 produces random number A and random number B, and random number A is as the key element, and random number B is as synchronous code and storage;
Step 2: the random number A that vendor code, sequence number, step 1 are obtained generates key 1 by key schedule, storage key 1, key schedule select for use a gust iteration, displacement or non-linear table in conjunction with in a kind of;
Step 3: generate data expressly according to vendor code, sequence number, synchronous code, the key that obtains with step 2 is to the data plain text encryption, generation encrypted packets 1; Random number A and encrypted packets 1 that step 1 is obtained are linked in sequence, and as packet 1, send to master control mechanism 2;
Step 4: synchronous code is added 1 produce new synchronous code;
Step 5: the new synchronous code that vendor code, sequence number integrating step 4 are obtained constitutes new data expressly, the key that obtains with step 2 obtains encrypted packets 2 to the new data plain text encryption, and sequence number and encrypted packets 2 are linked in sequence, as packet 2, send to master control mechanism 2;
Master control mechanism 2 learning processes:
Step 1: receive packet 1, extract the unencrypted data segment, i.e. random number A;
Step 2: receive packet 2, extract the unencrypted data segment, i.e. sequence number;
Step 3: the random number A that vendor code, step 1 are obtained, the sequence number that step 2 obtains generate key 2 by key schedule, storage key 2, key schedule select for use a gust iteration, displacement or non-linear table in conjunction with in a kind of;
Step 4:, obtain the data plaintext of packet 1 and the data plaintext of packet 2 with key 2 difference decrypted data packet 1 and the packets 2 that step 3 obtains;
Step 5: the data of the packet 1 that obtains according to step 4 expressly and the data of packet 2 plaintext, judge whether encryption is successful, if the vendor code of packet 1 data in expressly and the packet 2 data vendor code in expressly is identical, and it is consistent with the vendor code of master control mechanism 2, then continue, otherwise the study failure; If the sequence number in sequence number in the packet 1 data plaintext and the packet 2 data plaintext is inequality, then study failure, otherwise continue; If the synchronous code of packet 2 data in expressly is bigger by 1 than the synchronous code of packet 1 data in expressly, learning success then, otherwise study failure; Behind the learning success packet 1 data expressly the and key 2 that generates in identical sequence number, the step 3 in expressly of packet 2 data and the synchronous code in the packet 2 data plaintext store;
2) induction remote controller 1 and master control mechanism 2 communication process are specifically implemented as shown in Figure 3 according to the following steps:
Induction remote controller 1 communication process:
Step 1: definite data message that will send;
Step 2: the data message that will send, synchronous code are formed expressly, encrypt with the key 1 of step 2 generation in induction remote controller 1 learning process and generate encrypted packets 3, and sequence number and encrypted packets 3 are sent to master control mechanism 2;
Step 3: induction remote controller 1 is changed to accepting state, waits for the affirmation signal that master control mechanism 2 beams back or upgrades the synchronous code packet; If setting-up time internal induction remote controller 1 receives the affirmation signal that master control mechanism 2 beams back, storage again after the synchronous code of then responding to remote controller 1 storage adds 1, a sign off; If setting-up time internal induction remote controller 1 is received the renewal synchronous code packet that master control mechanism 2 beams back, then respond to remote controller 1 and receiving new synchronous code more after the new data packets, new synchronous code is extracted in deciphering, new synchronous code subtracted be stored as current synchronous code after 1, the current synchronous code of the data message of step 1, new storage is formed expressly, the key 1 that generates with step 2 in induction remote controller 1 learning process is encrypted this and is expressly generated ciphertext, and the ciphertext of sequence number and generation is sent to master control mechanism 2; If setting-up time internal induction remote controller 1 had both been confiscated the affirmation signal that master control mechanism 2 beams back, also confiscate the packet that upgrades synchronous code, the then operation of repeating step 2;
Master control mechanism 2 communication process:
Step 1: receive step 2 sends in induction remote controller 1 communication process encrypted packets 3 and sequence number;
Step 2: whether the sequence number that determining step 1 receives was learnt, if do not learn, then abandoned encrypted packets 3; Then continued if learn;
Step 3: decrypt encrypted data bag 3 extracts relevant information, the difference of the synchronous code of step 5 storage in synchronous code that obtains after the judgement deciphering and master control mechanism 2 learning processes, if the synchronous code of 1 storage adds 1 also storage again, send confirmation signal for induction remote controller 1, and control executing agency 3 carry out relevant operation; Otherwise continue;
Step 4: specify a random number to give induction remote controller 1 at random as new synchronous code, the relevant information that 2 pairs of new synchronous codes of key that generate with step 3 in master control mechanism 2 learning processes and last step obtain is encrypted, obtain encrypted packets 4, sequence number and encrypted packets 4 that step 1 is received send to induction remote controller 1;
Step 5: the synchronous code of step 5 storage in master control mechanism 2 learning processes is updated to step 4 synchronous code and the storage of appointment at random;
Step 6: master control mechanism 2 places accepting state, the single sign off.
Communication encrypting method of the present invention is finished and is once responded to remote controller 1 and master control mechanism 2 learning processes, it is exactly the matching process of relevant informations such as a secondary key, induction remote controller 1 behind the learning success has been set up corresponding relation with master control mechanism 2, and 1 master control mechanism 2 can corresponding a plurality of induction remote controllers 1 simultaneously.When study, master control mechanism 2 (decrypting end) places learning state, and induction remote controller 1 (encrypting end) is carried out the study action.
The present invention has realized that well no key enters and the anti-snatch system of intelligent anti-theft, solved the potential safety hazard of this system's medium-high frequency communication, reached the intellectuality of switch door lock, make car owner's authentication identification safer simultaneously, more accurate, after the data message that has prevented radio communication effectively was hunted down or disturbs, automotive theft proof system was cracked, and then the phenomenon that causes car to be stolen.
Claims (2)
1. a non-key system for automobile is characterized in that, comprises
Induction remote controller (1) is used to respond to low frequency induction signal and the transmission remote manipulation instruction signal that master control mechanism (2) sends;
Master control mechanism (2) is used for the signal of respond to remote controller (1) and does corresponding process operations;
Executing agency (3) is used to carry out the operational order that master control mechanism (2) sends, to drive corresponding electric device action;
Described induction remote controller (1) is connected with master control mechanism (2), and master control mechanism (2) also is connected with executing agency (3) and the interior former car circuit (4) of car.
2. communication encrypting method that is applied to the described non-key system for automobile of claim 1, described non-key system for automobile comprises induction remote controller (1) and the master control mechanism (2) that is connected, master control mechanism (2) also is connected with executing agency (3) and the interior former car circuit (4) of car, it is characterized in that, at first respond to remote controller (1) and master control mechanism (2) learning process, respond to remote controller (1) and master control mechanism (2) communication process again, specifically carry out according to the following steps:
1) induction remote controller (1) and master control mechanism (2) learning process:
Induction remote controller (1) learning process:
Step 1: induction remote controller (1) produces random number A and random number B, and random number A is as the key element, and random number B is as synchronous code and storage;
Step 2: the random number A that vendor code, sequence number, step 1 are obtained generates key 1 by key schedule, storage key 1, key schedule select for use a gust iteration, displacement or non-linear table in conjunction with in a kind of;
Step 3: generate data expressly according to vendor code, sequence number, synchronous code, the 1 pair of data plain text encryption of key with step 2 obtains produces encrypted packets 1; Random number A and encrypted packets 1 that step 1 is obtained are linked in sequence, and as packet 1, send to master control mechanism (2);
Step 4: synchronous code is added 1 produce new synchronous code;
Step 5: the new synchronous code that vendor code, sequence number integrating step 4 are obtained constitutes new data expressly, 1 pair of new data plain text encryption of key with step 2 obtains obtains encrypted packets 2, and sequence number and encrypted packets 2 are linked in sequence, as packet 2, send to master control mechanism (2);
Master control mechanism (2) learning process:
Step 1: receive packet 1, extract the unencrypted data segment, i.e. random number A;
Step 2: receive packet 2, extract the unencrypted data segment, i.e. sequence number;
Step 3: the random number A that vendor code, step 1 are obtained, the sequence number that step 2 obtains generate key 2 by key schedule, storage key 2, key schedule select for use a gust iteration, displacement or non-linear table in conjunction with in a kind of;
Step 4:, obtain the data plaintext of packet 1 and the data plaintext of packet 2 with key 2 difference decrypted data packet 1 and the packets 2 that step 3 obtains;
Step 5: the data of the packet 1 that obtains according to step 4 expressly and the data of packet 2 plaintext, judge whether encryption is successful, if the vendor code of packet 1 data in expressly and the packet 2 data vendor code in expressly is identical, and it is consistent with the vendor code of master control mechanism (2), then continue, otherwise the study failure; If the sequence number in sequence number in the packet 1 data plaintext and the packet 2 data plaintext is inequality, then study failure, otherwise continue; If the synchronous code of packet 2 data in expressly is bigger by 1 than the synchronous code of packet 1 data in expressly, learning success then, otherwise study failure; Behind the learning success packet 1 data expressly the and key 2 that generates in identical sequence number, the step 3 in expressly of packet 2 data and the synchronous code in the packet 2 data plaintext store;
2) induction remote controller (1) and master control mechanism (2) communication process:
Induction remote controller (1) communication process:
Step 1: definite data message that will send;
Step 2: the data message that will send, synchronous code are formed expressly, encrypt with the key 1 of step 2 generation in induction remote controller (1) learning process and generate encrypted packets 3, and sequence number and encrypted packets 3 are sent to master control mechanism (2);
Step 3: induction remote controller (1) is changed to accepting state, waits for the affirmation signal that master control mechanism (2) beams back or upgrades the synchronous code packet; If setting-up time internal induction remote controller (1) receives the affirmation signal that master control mechanism (2) beams back, storage again after the synchronous code of then responding to remote controller (1) storage adds 1, a sign off; If setting-up time internal induction remote controller (1) is received the renewal synchronous code packet that master control mechanism (2) beams back, then respond to remote controller (1) and receiving new synchronous code more after the new data packets, new synchronous code is extracted in deciphering, new synchronous code subtracted be stored as current synchronous code after 1, the current synchronous code of the data message of step 1, new storage is formed expressly, the key 1 that generates with step 2 in induction remote controller (1) learning process is encrypted this and is expressly generated ciphertext, and the ciphertext of sequence number and generation is sent to master control mechanism (2); If setting-up time internal induction remote controller (1) had both been confiscated the affirmation signal that master control mechanism (2) beams back, also confiscate the packet that upgrades synchronous code, the then operation of repeating step 2;
Master control mechanism (2) communication process:
Step 1: receive step 2 sends in induction remote controller (1) communication process encrypted packets 3 and sequence number;
Step 2: whether the sequence number that determining step 1 receives was learnt, if do not learn, then abandoned encrypted packets 3; Then continued if learn;
Step 3: decrypt encrypted data bag 3 extracts relevant information, the difference of the synchronous code of step 5 storage in synchronous code that obtains after the judgement deciphering and master control mechanism (2) learning process, if the synchronous code of 1 storage adds 1 also storage again, send confirmation signal for induction remote controller (1), and control executing agency (3) carry out relevant operation; Otherwise continue;
Step 4: specify a random number to give induction remote controller (1) at random as new synchronous code, the relevant information that 2 pairs of new synchronous codes of key that generate with step 3 in master control mechanism (2) learning process and last step obtain is encrypted, obtain encrypted packets 4, sequence number and encrypted packets 4 that step 1 is received send to induction remote controller (1);
Step 5: the synchronous code of step 5 storage in master control mechanism (2) learning process is updated to step 4 synchronous code and the storage of appointment at random;
Step 6: master control mechanism (2) places accepting state, the single sign off.
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| CN102568062A (en) * | 2011-09-29 | 2012-07-11 | 浙江吉利汽车研究院有限公司 | Encryption and decryption method for remote controller |
| CN101793948B (en) * | 2010-01-29 | 2012-11-07 | 重庆长安汽车股份有限公司 | Low-frequency calibration system and method for passive entry system for vehicles |
| CN101793114B (en) * | 2010-01-14 | 2013-01-23 | 杭州六易科技有限公司 | Signal encryption type safety remote control lock for automobiles |
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| CN103899146A (en) * | 2012-12-26 | 2014-07-02 | 现代摩比斯株式会社 | Method and smartkey system for reducing battery consumption |
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| CN101793948B (en) * | 2010-01-29 | 2012-11-07 | 重庆长安汽车股份有限公司 | Low-frequency calibration system and method for passive entry system for vehicles |
| CN102568062A (en) * | 2011-09-29 | 2012-07-11 | 浙江吉利汽车研究院有限公司 | Encryption and decryption method for remote controller |
| CN103899146A (en) * | 2012-12-26 | 2014-07-02 | 现代摩比斯株式会社 | Method and smartkey system for reducing battery consumption |
| CN103899146B (en) * | 2012-12-26 | 2016-09-28 | 现代摩比斯株式会社 | In order to reduce intelligent key system and the How It Works thereof of battery consumption |
| CN103578165A (en) * | 2013-03-08 | 2014-02-12 | 高潮 | Anti-theft system |
| CN103578165B (en) * | 2013-03-08 | 2016-06-29 | 高潮 | A kind of burglary-resisting system |
| CN104727658A (en) * | 2015-01-26 | 2015-06-24 | 湖南银宝科技发展有限公司 | Intelligent lock, intelligent key and control method and device thereof |
| CN106373367A (en) * | 2016-10-27 | 2017-02-01 | 武汉奥泽电子有限公司 | Low-power-consumption automobile RKE remote controller and method for lowering power consumption |
| CN109286487B (en) * | 2017-07-19 | 2021-10-01 | 杭州海康威视数字技术股份有限公司 | Remote control method and system for electronic equipment |
| CN109286487A (en) * | 2017-07-19 | 2019-01-29 | 杭州海康威视数字技术股份有限公司 | The remote control method and system of a kind of electronic equipment |
| WO2019109979A1 (en) * | 2017-12-06 | 2019-06-13 | 比亚迪股份有限公司 | Wearable device with vehicle-finding function |
| CN112753051A (en) * | 2018-08-30 | 2021-05-04 | 多玛卡巴瑞士股份公司 | Access control device and method |
| CN112753051B (en) * | 2018-08-30 | 2023-11-14 | 多玛卡巴瑞士股份公司 | Apparatus and method for access control |
| CN112009422A (en) * | 2019-05-31 | 2020-12-01 | 长城汽车股份有限公司 | Antenna system of PEPS system, key searching method, PEPS system and vehicle |
| CN112009422B (en) * | 2019-05-31 | 2022-06-28 | 长城汽车股份有限公司 | Antenna system of PEPS system, key searching method, PEPS system and vehicle |
| CN111502428A (en) * | 2020-04-21 | 2020-08-07 | 德施曼机电（中国）有限公司 | Intelligent lock based on pluggable key detection module |
| CN114531291A (en) * | 2022-02-21 | 2022-05-24 | 深圳市铖月控股有限公司 | Remote controller data encryption method, remote controller data decryption method, remote controller and electronic equipment |
| CN115102726A (en) * | 2022-06-07 | 2022-09-23 | 东风柳州汽车有限公司 | Double-authentication matching method, device, system and equipment for remote control key |
| CN115102726B (en) * | 2022-06-07 | 2024-04-05 | 东风柳州汽车有限公司 | Dual authentication matching method, device, system and equipment for remote key |
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