CN202518223U - Vehicle keyless learning system using wireless bidirectional communication - Google Patents
Vehicle keyless learning system using wireless bidirectional communication Download PDFInfo
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- CN202518223U CN202518223U CN2012201269825U CN201220126982U CN202518223U CN 202518223 U CN202518223 U CN 202518223U CN 2012201269825 U CN2012201269825 U CN 2012201269825U CN 201220126982 U CN201220126982 U CN 201220126982U CN 202518223 U CN202518223 U CN 202518223U
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Abstract
The utility model discloses a vehicle keyless learning system using wireless bidirectional communication, which mainly comprises an intelligent key, a vehicle keyless module and a learning instrument, wherein the vehicle keyless module comprises a UHF (ultrahigh frequency) receiver, an LF (low frequency) emitter, a first microcomputer and a CAN transceiver; the intelligent key comprises a UHF emitter, an LF receiver and a second microcomputer; a key random generating module is arranged in the learning instrument and is connected with the CAN transceiver in the vehicle keyless module. According to the utility model, an LF/UHF bidirectional communication mode is adopted between the intelligent key and the vehicle keyless module, a secret key is centrally managed and randomly generated by the learning instrument, and is enabled not to be repeatedly used so as to be prevented from being leaked, and therefore the safety and the reliability of the vehicle keyless learning system are ensured.
Description
Technical field
The utility model relates to the automotive safety technical field, specially refers to a kind of automobile-used no key learning system of using wireless two-way communication.
Background technology
The keyless systems of vehicle adopts the radio frequency discrimination RFID technology; Intelligent key and vehicle-mounted no key module use the mode of radio communication to carry out authentication; After both mutual authentications are passed through; Vehicle-mounted no key module is promptly notified vehicle-mounted other electronic modules to open and close door lock or is started the action of engine, and also promptly the Intelligent key of this car can be opened the car door of this car and start engine.But the Intelligent key of other vehicles since can't through with the authentication of vehicle-mounted no key module, the car door that can't open this car with start engine.
Because the channel of radio communication is the channel of an opening; And radio-frequency recognition system is usually operated at the whole world unified disclosed industry, science and medical frequency range; Any individual can utilize this frequency range to communicate with organizing, safety hazard such as be easy to take place therefore that Content of Communication is eavesdropped, change and communicating pair identity are palmed off.In order to ensure the safe transmission of data, guarantee that vehicle is not stolen, wireless communication system generally all can be encrypted information transmitted.Just because of this, Intelligent key and vehicle-mounted no key module must be carried out information such as interchange key earlier before normal operation, leave in respectively in the nonvolatile memory separately, just can carry out the encrypting and decrypting of wireless data then, and both mutual authentications.The process of the mutual key of Intelligent key and vehicle-mounted no key module can be described as the study coupling of keyless systems.General car load factory requires the study coupling with Intelligent key and vehicle-mounted no key module to be put into vehicle to assemble basically and carry out after accomplishing.
The mode of learning of existing Intelligent key and vehicle-mounted no key module is: the user triggers the switch on the vehicle with certain array mode; Let vehicle-mounted no key module get into mode of learning, Intelligent key sends to vehicle-mounted no key module through UHF with key then.The shortcoming of this mode of learning is, Intelligent key and vehicle-mounted no key module adopt the one way communication mode, and vehicle-mounted no key module can't be confirmed whether learning success of Intelligent key.Key is generated by Intelligent key, can't realize that key is not repeated to use.Anyone can not trigger keyless systems by instrument and learn.
The utility model content
The purpose of the utility model is to provide a kind of automobile-used no key learning system, adopts the mode of LF/UHF two way communication through Intelligent key and vehicle-mounted no key module, thereby realizes the purpose of the utility model.
The technical matters that the utility model solved can adopt following technical scheme to realize:
A kind of automobile-used no key learning system of using wireless two-way communication is characterized in that it comprises:
Learning instrument, built-in key is generation module at random, is connected with CAN transceiver in the vehicle-mounted no key module through the CAN bus;
Vehicle-mounted no key module comprises the UHF receiver that is used to receive the ultra-high frequency signal that intelligent key sends, is used for sending the LF projector of low frequency signal, the encrypting and decrypting that is used for wireless communication data, data analysis is handled and first microcomputer of storage radio communication key, being used for carrying out with learning machine the CAN transceiver of communication to intelligent key; Said first microcomputer is provided with some interfaces, and high frequency receiver, low frequencies device and CAN transceiver are connected with first microcomputer through corresponding interface;
Intelligent key, comprise be used for to vehicle-mounted no key module send the UHF projector of ultra-high frequency signal, the LF receiver, the encrypting and decrypting that is used for wireless communication data, the data analysis that are used to receive the low frequency signal that vehicle-mounted no key module sends handled and second microcomputer of storage radio communication key; Said second microcomputer is provided with some interfaces, and HF transmitter is connected with second microcomputer through corresponding interface with LF receiver and controlled by it.
In an embodiment of the utility model, said first microcomputer and second microcomputer comprise the nonvolatile memory that is used for storage key.
In an embodiment of the utility model, the communication range of said UHF projector and ultra-high frequency receiver is greater than 10 meters, and the communication range of low frequencies device and LF receiver is less than 2.5 meters.
The beneficial effect of the utility model is:
1) Intelligent key and vehicle-mounted no key module adopt the mode of LF/UHF two way communication, and whether both can confirm learning success each other.
2) key is generated by the learning instrument unified management at random, guarantees that key is not repeated to use, and prevents the key leakage.
3) study of keyless systems must use learning instrument to accomplish by the authorized person of producer, guarantees the safe and reliable of system.
Description of drawings
Fig. 1 is the structured flowchart of the described automobile-used no key learning system of the utility model.
Fig. 2 is the structured flowchart of the described vehicle-mounted no key module of the utility model
Fig. 3 is the structured flowchart of the described Intelligent key of the utility model.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with the specific embodiment, further set forth the utility model.
Like Fig. 1, Fig. 2 and shown in Figure 3, the described automobile-used no key learning system of the utility model mainly comprises Intelligent key 300, vehicle-mounted no key module 200 and learning instrument 100.
Intelligent key comprises: three-dimensional low frequency (LF) receiver 310, UHF (UHF) projector 320 and second microcomputer 330 etc.Three-dimensional LF receiver is used to receive the LF signal that vehicle-mounted no key module is sent.Because the directivity of LF signal adopts three-dimensional LF receiver can guarantee that any modes of emplacement of Intelligent key can receive low frequency signal.The UHF projector is used for sending the UHF signal to vehicle-mounted no key module.Microcomputer is used for the encrypting and decrypting of wireless communication data, and data analysis is handled and storage radio communication key.
Vehicle-mounted no key module comprises: LF projector 210, UHF receiver 220, first microcomputer 230 and CAN transceiver 240 etc.The LF projector is used for sending the LF signal to Intelligent key.The UHF receiver is used to receive the UHF signal that Intelligent key sends.Microcomputer is used for the encrypting and decrypting of wireless communication data, and data analysis is handled and storage radio communication key.The CAN bus is used for communicating with learning instrument.
Learning instrument comprises: comprise key generation module and relevant interface etc. immediately, learning instrument is used for user's operation, control learning process and generates key etc.
The signalling methods of the described automobile-used no key learning system of the utility model is following:
Intelligent key and vehicle-mounted no key module realize two way communication through low frequency (125KHz) and UHF (433.92MHz), and wherein, the communication distance of low frequency is less than 2.5 meters, and the communication distance of UHF is greater than 10 meters; Learning instrument and vehicle-mounted no key module adopt the CAN bus communication.
The algorithm of the described automobile-used no key learning system of the utility model is following:
Learning instrument triggers vehicle-mounted no key module through the CAN bus and gets into mode of learning;
The key that learning instrument generates radio communication sends to vehicle-mounted no key module.In order to guarantee the reliable of system, prevent the key leakage, being generated as at random of key produces, and guarantees that the key of all these family cars is not repeated to use.
Vehicle-mounted no key module sends to Intelligent key with key by LF.
Intelligent key writes in the nonvolatile memory of oneself after receiving this key, and read-back verification from memory device sends to vehicle-mounted no key module with this key through the UHF projector then again.
Key that vehicle-mounted no key module is returned Intelligent key and the key that oneself sends to Intelligent key are compared, if identical, just this key are write oneself nonvolatile memory.
So far, vehicle-mounted no key module has all been stored identical key with Intelligent key.Vehicle-mounted no key module notice learning instrument key learning success.
More than show and described groundwork of the utility model and the advantage of principal character and the utility model.The technical personnel of the industry should be understood; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification sheets that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (3)
1. automobile-used no key learning system of using wireless two-way communication is characterized in that it comprises:
Learning instrument, built-in key is generation module at random, is connected with CAN transceiver in the vehicle-mounted no key module through the CAN bus;
Vehicle-mounted no key module comprises the UHF receiver that is used to receive the ultra-high frequency signal that Intelligent key sends, is used for sending the LF projector of low frequency signal, the encrypting and decrypting that is used for wireless communication data, data analysis is handled and first microcomputer of storage radio communication key, being used for carrying out with learning machine the CAN transceiver of communication to Intelligent key; Said first microcomputer is provided with some interfaces, and high frequency receiver, low frequencies device and CAN transceiver are connected with first microcomputer through corresponding interface;
Intelligent key, comprise be used for to vehicle-mounted no key module send the UHF projector of ultra-high frequency signal, the LF receiver, the encrypting and decrypting that is used for wireless communication data, the data analysis that are used to receive the low frequency signal that vehicle-mounted no key module sends handled and second microcomputer of storage radio communication key; Said second microcomputer is provided with some interfaces, and HF transmitter is connected with second microcomputer through corresponding interface with LF receiver and controlled by it.
2. a kind of automobile-used no key learning system of using wireless two-way communication according to claim 1 is characterized in that said first microcomputer and second microcomputer comprise the nonvolatile memory that is used for storage key.
3. a kind of automobile-used no key learning system of using wireless two-way communication according to claim 1; It is characterized in that; The communication range of said UHF projector and ultra-high frequency receiver is greater than 10 meters, and the communication range of low frequencies device and LF receiver is less than 2.5 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201269825U CN202518223U (en) | 2012-03-29 | 2012-03-29 | Vehicle keyless learning system using wireless bidirectional communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201269825U CN202518223U (en) | 2012-03-29 | 2012-03-29 | Vehicle keyless learning system using wireless bidirectional communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202518223U true CN202518223U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201269825U Expired - Fee Related CN202518223U (en) | 2012-03-29 | 2012-03-29 | Vehicle keyless learning system using wireless bidirectional communication |
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| CN (1) | CN202518223U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946795A (en) * | 2016-05-05 | 2016-09-21 | 北京汽车股份有限公司 | Vehicle key learning method and system |
| CN106447832A (en) * | 2015-08-07 | 2017-02-22 | 广州汽车集团股份有限公司 | Vehicle remote control key learning method |
| CN111127712A (en) * | 2019-12-26 | 2020-05-08 | 重庆集诚汽车电子有限责任公司 | Automatic learning method for remote controller of PEPS controller system |
| CN113269912A (en) * | 2021-07-21 | 2021-08-17 | 江苏赫奕科技有限公司 | Vehicle key learning method and system, vehicle-mounted control equipment and storage medium |
-
2012
- 2012-03-29 CN CN2012201269825U patent/CN202518223U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106447832A (en) * | 2015-08-07 | 2017-02-22 | 广州汽车集团股份有限公司 | Vehicle remote control key learning method |
| CN106447832B (en) * | 2015-08-07 | 2018-12-07 | 广州汽车集团股份有限公司 | A kind of automobile remote-control key learning method |
| CN105946795A (en) * | 2016-05-05 | 2016-09-21 | 北京汽车股份有限公司 | Vehicle key learning method and system |
| CN105946795B (en) * | 2016-05-05 | 2019-02-01 | 北京汽车股份有限公司 | Car key learning method and system |
| CN111127712A (en) * | 2019-12-26 | 2020-05-08 | 重庆集诚汽车电子有限责任公司 | Automatic learning method for remote controller of PEPS controller system |
| CN111127712B (en) * | 2019-12-26 | 2022-04-29 | 重庆集诚汽车电子有限责任公司 | Intelligent key automatic learning method based on PEPS controller |
| CN113269912A (en) * | 2021-07-21 | 2021-08-17 | 江苏赫奕科技有限公司 | Vehicle key learning method and system, vehicle-mounted control equipment and storage medium |
| CN113269912B (en) * | 2021-07-21 | 2021-10-01 | 江苏赫奕科技有限公司 | Vehicle key learning method and system, vehicle-mounted control equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20180329 |