CN114162079A - Method and system for backing up unlocking - Google Patents
Method and system for backing up unlocking Download PDFInfo
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- CN114162079A CN114162079A CN202111414010.6A CN202111414010A CN114162079A CN 114162079 A CN114162079 A CN 114162079A CN 202111414010 A CN202111414010 A CN 202111414010A CN 114162079 A CN114162079 A CN 114162079A
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- key
- frequency
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- backup
- signal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
- B60R25/245—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user where the antenna reception area plays a role
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/40—Features of the power supply for the anti-theft system, e.g. anti-theft batteries, back-up power supply or means to save battery power
- B60R25/406—Power supply in the remote key
Abstract
The invention is suitable for the technical improvement field of electronic appliances, and provides a method for backing up unlocking, which comprises the following steps: s1, distributing a channel on the low-frequency chip as a backup unblocking channel; s2, waking up the controller through the external-open handle to output a signal through the low-frequency antenna to search for the remote control key; s3, judging whether a high-frequency signal response of the remote control key is received within a preset time; s4, an alternating magnetic field generated by alternating voltage of the low-frequency antenna enables an LC circuit in the key to generate voltage to supply power to the key Transponder; s5, after obtaining electric energy, the Transponder sends a radio frequency signal to the controller at high frequency; s6, the controller receives the high-frequency signal, demodulates and decodes the signal and performs key authentication; and S7, the controller authenticates that the key unlocks by driving the door lock motor. The backup unlocking and locking mode is changed from complicated to simple, and the user perception experience is improved.
Description
Technical Field
The invention belongs to the technical improvement field of electronic appliances, and particularly relates to a method for backing up unlocking.
Background
Keyless entry is taken as an entry technology, and the operation convenience is greatly improved in the daily vehicle using process. However, when the vehicle with the keyless entry function is configured, when the key is low in power or the key is not powered, the remote control key and the unlocking action of the handle key cannot trigger the key response. If the user needs to enter or leave the vehicle at this time, the mechanical key is used for backup unlocking, as shown in fig. 1.
The existing design considers the attractive and coherent appearance, the lock cylinder can be hidden through the decorative cover, and a user cannot easily find the lock cylinder, as shown in fig. 2. If the key battery fails, the vehicle can be unlocked through a series of steps, so that the difficulty of backup unlocking operation is increased.
The prior art operation steps are as follows, as shown in fig. 3:
1) pulling out a mechanical key blade in the remote control key assembly;
2) prying the lock cylinder decorative cover to expose the position of the lock cylinder;
3) the mechanical key blade is used for rotating and unlocking the car door;
4) pulling out the key sheet and recovering the lock core decorative cover;
5) and restoring the mechanical key blade.
The operation is complicated, the process is complex, and the method is not easy to master.
In the scene that the electric quantity is low due to the aging of a key battery or other accidents, a convenient mode that a customer needs to back up an unlocking vehicle is solved, and the original complicated operation mode is replaced; the problem of the conflict between attractive appearance and convenient function is solved, the backup unlocking and locking required by a client can be realized in one step, and the functions are ensured while the attractiveness is met.
Disclosure of Invention
The present invention provides a method for backing up unlocking, and aims to solve the above technical problems.
The invention is realized in such a way that a backup unlocking method comprises the following steps:
s1, distributing a channel on the low-frequency chip as a backup unblocking channel;
s2, waking up the controller through the external-open handle to output a signal through the low-frequency antenna to search for the remote control key;
s3, judging whether a high-frequency signal response of the remote control key is received within a preset time, if not, keeping the controller to continuously drive the low-frequency antenna to find the key, if so, enabling the remote control key to be close to the outward opening handle, and enabling the distance between the 3D antenna in the remote control key and the low-frequency antenna in the outward opening handle to be smaller than a set distance;
s4, an alternating magnetic field generated by alternating voltage of the low-frequency antenna enables an LC circuit in the key to generate voltage to supply power to the key Transponder;
s5, after obtaining electric energy, the Transponder sends a radio frequency signal to the controller at high frequency;
s6, the controller receives the high-frequency signal, demodulates and decodes the signal and performs key authentication;
and S7, the controller authenticates that the key unlocks by driving the door lock motor.
The further technical scheme of the invention is as follows: the step S6 further includes the following steps:
s61, the controller demodulator demodulates the modulated signal into a level signal;
s61, processing the level signals through the MCU to combine into a 32-byte bus message, and carrying an ID, a secret key and a rolling code count on the appointed bytes of the signals;
and S63, comparing the three parameters with the stored data, if the comparison result is consistent, determining that the key is legal and driving the door lock motor to unlock, and if the comparison result is inconsistent, repeating the comparison for two times and not passing the comparison, and ending the current process.
The further technical scheme of the invention is as follows: the low frequency antenna outputs a low frequency signal of 125KHz frequency in said step S2.
The further technical scheme of the invention is as follows: the high-frequency signal is a high-frequency signal with the frequency of 433.92 MHz.
The further technical scheme of the invention is as follows: the low frequency chip adopted in step S1 is a NJJ29C2 dual IMMO channel low frequency driver chip.
It is another object of the present invention to provide a backup unblocking system, which includes
The channel distribution module is used for distributing one channel on the low-frequency chip as a backup unlocking channel;
the searching module is used for waking up the controller through the externally-opened handle and searching the remote control key through a signal output by the low-frequency antenna;
the response judgment module is used for judging whether a high-frequency signal response of the remote control key is received within a preset time, if not, the controller keeps continuously driving the low-frequency antenna to find the key, if so, the remote control key approaches the outward opening handle, and the distance between the 3D antenna in the remote control key and the low-frequency antenna in the outward opening handle is smaller than a set distance;
the voltage generation module is used for enabling an LC circuit in the key to generate voltage to supply power to the key Transponder by an alternating magnetic field generated by alternating voltage of the low-frequency antenna;
the signal sending module is used for sending a radio frequency signal to the controller at high frequency after the Transponder obtains electric energy;
the decoding authentication module is used for demodulating and decoding the high-frequency signal received by the controller and authenticating a key;
and the unlocking and locking module is used for unlocking and locking the controller authentication key by driving the door lock motor.
The further technical scheme of the invention is as follows: the decoding authentication module also comprises
A demodulation unit for controlling the demodulator to demodulate the modulated signal into a level signal;
the analysis processing unit is used for processing and combining the level signals into a 32-byte bus message through the MCU, and ID, a secret key and rolling code count are carried in designated bytes of the signals;
and the comparison unlocking and locking unit is used for comparing the three parameters with the stored data, if the comparison result is consistent, the key is considered to be legal and the door lock motor is driven to unlock, and if the comparison result is inconsistent, the comparison is repeated for two times and the current process is ended.
The further technical scheme of the invention is as follows: the low-frequency antenna in the searching module outputs a low-frequency signal with the frequency of 125 KHz.
The further technical scheme of the invention is as follows: the high-frequency signal is a high-frequency signal with the frequency of 433.92 MHz.
The further technical scheme of the invention is as follows: the low-frequency chip adopted in the channel distribution module is an NJJ29C2 double IMMO channel low-frequency driving chip.
The invention has the beneficial effects that: the backup unlocking and locking process is changed from fussy to concise, and the operation is simplified; on the premise of ensuring the safety, the operation time is saved; on the premise of keeping the existing hardware structure, better user experience is obtained; the design space of the external-open handle model is provided, and the die opening difficulty of the lock cylinder decorative cover is reduced.
Drawings
Fig. 1 is a schematic view of a non-concealed handle of a conventional lock cylinder.
Fig. 2 is a schematic view of a conventional concealed lock cylinder handle.
Fig. 3 is a conventional deblocking flowchart.
Fig. 4 is a schematic diagram of the optimized deblocking provided by the embodiment of the present invention.
Fig. 5 is an optimized transmission of the deblocking signal provided by an embodiment of the present invention.
Fig. 6 is a flowchart of the optimized deblocking method according to the embodiment of the present invention.
Fig. 7 is a schematic diagram of signal source transmission provided by the embodiment of the invention.
Detailed Description
As shown in fig. 4-7, the backup unblocking method provided by the present invention is detailed as follows:
step S1, distributing a channel on the low-frequency chip as a backup unblocking channel;
step S2, the controller is wakened up through the external-open handle, and a remote control key is searched through a low-frequency antenna output signal;
step S3, judging whether the high-frequency signal response of the remote control key is received within the preset time, if not, keeping the controller to continuously drive the low-frequency antenna to find the key, if so, enabling the remote control key to be close to the outward opening handle, and enabling the distance between the 3D antenna in the remote control key and the low-frequency antenna in the outward opening handle to be smaller than the set distance;
step S4, an alternating magnetic field generated by the alternating voltage of the low-frequency antenna enables an LC circuit in the key to generate voltage to supply power to the key Transponder;
step S5, the Transponder sends radio frequency signals to the controller at high frequency after obtaining electric energy;
step S6, the controller receives the high frequency signal, demodulates and decodes and carries on the key authentication;
and step S7, the controller authenticates that the key is unlocked by the rear driving door lock motor.
Selecting a low-frequency driving chip with Enzhipu NJJ29C2 double IMMO (immobilizer) channels, and allocating one channel for backup unblocking; multiplexing a left front door handle induction antenna, and unlocking without a key and unlocking with an induction backup under normal conditions; under the condition that the electric quantity of the key is low, the key is close to the antenna, and the legality of the key is identified through induction authentication; after the safety certification is passed, the unlocking and locking are realized by pressing down the handle key, and the whole process is not required to be mechanically disassembled and restored, as shown in fig. 4.
When the button of the external-open handle is pressed, the wake-up controller outputs a 125KHz signal through the low-frequency antenna to search for the remote control key, and when the remote control key does not receive 433.92MHz high-frequency signal response in 300 ms. The controller keeps continuously driving the low-frequency antenna to find the key, when the remote control key is close to the outward-opening handle, and the distance between the 3D antenna in the remote control key and the low-frequency antenna in the outward-opening handle is less than 50 mm. An alternating magnetic field generated by alternating voltage of the low-frequency antenna enables an LC circuit in the key to generate voltage so as to supply power to the Transponder, and the Transponder sends a radio-frequency signal at 433.92MHz after obtaining electric energy. And the controller demodulates and decrypts the received high-frequency signal. And after the decryption is successful and the authentication is passed. And driving a door lock motor to unlock. As shown in fig. 5.
After the controller receives the 433.92MHz radio frequency signal, the demodulator of the controller is responsible for demodulating the modulation signal into a level signal. The 32-byte bus message is processed and combined by the MCU, and the signal designated byte carries a key ID, a secret key and a rolling code count. These three parameters are compared to control stored data. And if the comparison results are consistent, the key is considered to be legal, and the lock motor is driven to unlock. If the comparison result is not consistent, retry is performed twice, and if the retry still fails, the current flow is ended. As shown in fig. 6.
And the method provides a more convenient backup unlocking mode through the inductive mode authentication. The backup unlocking and locking mode is changed from complicated to simple, and the user perception experience is improved. The conflict between the shape and the function is solved, the new technology can avoid the limitation of the function to the shape, and the integral shape is ensured to be attractive. The new technology is easy to master and operate, and the use and operation time of a user is saved.
The remote control key is close to the external opening handle, and the distance is less than 50 mm; pressing the external handle knob button to wake up the controller; the controller drives the internal antenna of the external-open handle through the low-frequency driving chip to search the remote control key at 125 KHz; after the remote control key receives the continuous energy, the magnetic field induction obtains the energy, and the key ID is replied through a wireless signal after signal modulation and encryption; if no response exists, the driving retries twice in a period of 100ms, and if no response exists, the flow is ended; positive response, controlling the receiving end to receive the wireless signal; the controller receives the wireless signal of the remote control key, and after the wireless signal is demodulated by the demodulator, the wireless signal is compared with the key ID, the key and the rolling code count which are stored in the controller; if the IDs are consistent, the safety certification is passed, the four doors are driven to unlock, if the IDs are inconsistent, the process is ended, and a new instruction is waited; as shown in fig. 7.
The backup unlocking and locking process is changed from fussy to concise, and the operation is simplified; on the premise of ensuring the safety, the operation time is saved; on the premise of keeping the existing hardware structure, better user experience is obtained; the design space of the external-open handle model is provided, and the die opening difficulty of the lock cylinder decorative cover is reduced.
It is another object of the present invention to provide a backup unblocking system, which includes
The channel distribution module is used for distributing one channel on the low-frequency chip as a backup unlocking channel;
the searching module is used for waking up the controller through the externally-opened handle and searching the remote control key through a signal output by the low-frequency antenna;
the response judgment module is used for judging whether a high-frequency signal response of the remote control key is received within a preset time, if not, the controller keeps continuously driving the low-frequency antenna to find the key, if so, the remote control key approaches the outward opening handle, and the distance between the 3D antenna in the remote control key and the low-frequency antenna in the outward opening handle is smaller than a set distance;
the voltage generation module is used for enabling an LC circuit in the key to generate voltage to supply power to the key Transponder by an alternating magnetic field generated by alternating voltage of the low-frequency antenna;
the signal sending module is used for sending a radio frequency signal to the controller at high frequency after the Transponder obtains electric energy;
the decoding authentication module is used for demodulating and decoding the high-frequency signal received by the controller and authenticating a key;
and the unlocking and locking module is used for unlocking and locking the controller authentication key by driving the door lock motor.
The further technical scheme of the invention is as follows: the decoding authentication module also comprises
A demodulation unit for controlling the demodulator to demodulate the modulated signal into a level signal;
the analysis processing unit is used for processing and combining the level signals into a 32-byte bus message through the MCU, and ID, a secret key and rolling code count are carried in designated bytes of the signals;
and the comparison unlocking and locking unit is used for comparing the three parameters with the stored data, if the comparison result is consistent, the key is considered to be legal and the door lock motor is driven to unlock, and if the comparison result is inconsistent, the comparison is repeated for two times and the current process is ended.
The further technical scheme of the invention is as follows: the low-frequency antenna in the searching module outputs a low-frequency signal with the frequency of 125 KHz.
The further technical scheme of the invention is as follows: the high-frequency signal is a high-frequency signal with the frequency of 433.92 MHz.
The further technical scheme of the invention is as follows: the low-frequency chip adopted in the channel distribution module is an NJJ29C2 double IMMO channel low-frequency driving chip.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A method of backup unblocking, characterized in that the method of backup unblocking comprises the steps of:
s1, distributing a channel on the low-frequency chip as a backup unblocking channel;
s2, waking up the controller through the external-open handle to output a signal through the low-frequency antenna to search for the remote control key;
s3, judging whether a high-frequency signal response of the remote control key is received within a preset time, if not, keeping the controller to continuously drive the low-frequency antenna to find the key, if so, enabling the remote control key to be close to the outward opening handle, and enabling the distance between the 3D antenna in the remote control key and the low-frequency antenna in the outward opening handle to be smaller than a set distance;
s4, an alternating magnetic field generated by alternating voltage of the low-frequency antenna enables an LC circuit in the key to generate voltage to supply power to the key Transponder;
s5, after obtaining electric energy, the Transponder sends a radio frequency signal to the controller at high frequency;
s6, the controller receives the high-frequency signal, demodulates and decodes the signal and performs key authentication;
and S7, the controller authenticates that the key unlocks by driving the door lock motor.
2. The backup unblocking method according to claim 1, wherein the step S6 further includes the steps of:
s61, the controller demodulator demodulates the modulated signal into a level signal;
s61, processing the level signals through the MCU to combine into a 32-byte bus message, and carrying an ID, a secret key and a rolling code count on the appointed bytes of the signals;
and S63, comparing the three parameters with the stored data, if the comparison result is consistent, determining that the key is legal and driving the door lock motor to unlock, and if the comparison result is inconsistent, repeating the comparison for two times and not passing the comparison, and ending the current process.
3. The backup unblocking method according to claim 2, wherein the low frequency antenna outputs the low frequency signal of 125KHz in the step S2.
4. The backup unblocking method according to claim 3, wherein said high frequency signal is a high frequency signal having a frequency of 433.92 MHz.
5. The method for backup unblocking according to claim 4, wherein the low frequency chip adopted in the step S1 is a NJJ29C2 dual IMMO channel low frequency driving chip.
6. A backup unblocking system, wherein the backup unblocking system comprises
The channel distribution module is used for distributing one channel on the low-frequency chip as a backup unlocking channel;
the searching module is used for waking up the controller through the externally-opened handle and searching the remote control key through a signal output by the low-frequency antenna;
the response judgment module is used for judging whether a high-frequency signal response of the remote control key is received within a preset time, if not, the controller keeps continuously driving the low-frequency antenna to find the key, if so, the remote control key approaches the outward opening handle, and the distance between the 3D antenna in the remote control key and the low-frequency antenna in the outward opening handle is smaller than a set distance;
the voltage generation module is used for enabling an LC circuit in the key to generate voltage to supply power to the key Transponder by an alternating magnetic field generated by alternating voltage of the low-frequency antenna;
the signal sending module is used for sending a radio frequency signal to the controller at high frequency after the Transponder obtains electric energy;
the decoding authentication module is used for demodulating and decoding the high-frequency signal received by the controller and authenticating a key;
and the unlocking and locking module is used for unlocking and locking the controller authentication key by driving the door lock motor.
7. The backup unblocking system according to claim 6, further comprising a decoding authentication module
A demodulation unit for controlling the demodulator to demodulate the modulated signal into a level signal;
the analysis processing unit is used for processing and combining the level signals into a 32-byte bus message through the MCU, and ID, a secret key and rolling code count are carried in designated bytes of the signals;
and the comparison unlocking and locking unit is used for comparing the three parameters with the stored data, if the comparison result is consistent, the key is considered to be legal and the door lock motor is driven to unlock, and if the comparison result is inconsistent, the comparison is repeated for two times and the current process is ended.
8. The backup unblocking system according to claim 7, wherein the low frequency antenna in the searching module outputs a low frequency signal with a frequency of 125 KHz.
9. The backup unblocking system according to claim 8, wherein said high frequency signal is a high frequency signal having a frequency of 433.92 MHz.
10. The backup unblocking system according to claim 9, wherein the low frequency chip adopted in the channel allocation module is an NJJ29C2 dual IMMO channel low frequency driver chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111414010.6A CN114162079A (en) | 2021-11-25 | 2021-11-25 | Method and system for backing up unlocking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111414010.6A CN114162079A (en) | 2021-11-25 | 2021-11-25 | Method and system for backing up unlocking |
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| CN114162079A true CN114162079A (en) | 2022-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111414010.6A Pending CN114162079A (en) | 2021-11-25 | 2021-11-25 | Method and system for backing up unlocking |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114842577A (en) * | 2022-04-14 | 2022-08-02 | 重庆长安汽车股份有限公司 | Combined unlocking and locking system, method and storage medium |
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| KR20080008171A (en) * | 2006-07-19 | 2008-01-23 | 양재우 | Passive entry system, and method of wake-up and trigger thereof |
| CN103337103A (en) * | 2013-07-01 | 2013-10-02 | 江苏安智欣电子科技有限公司 | Door handle for intelligent key system |
| CN112396737A (en) * | 2020-11-30 | 2021-02-23 | 埃泰克汽车电子(芜湖)有限公司 | Door lock control system in key power-off state and control method thereof |
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2021
- 2021-11-25 CN CN202111414010.6A patent/CN114162079A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080008171A (en) * | 2006-07-19 | 2008-01-23 | 양재우 | Passive entry system, and method of wake-up and trigger thereof |
| CN103337103A (en) * | 2013-07-01 | 2013-10-02 | 江苏安智欣电子科技有限公司 | Door handle for intelligent key system |
| CN112396737A (en) * | 2020-11-30 | 2021-02-23 | 埃泰克汽车电子(芜湖)有限公司 | Door lock control system in key power-off state and control method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114842577A (en) * | 2022-04-14 | 2022-08-02 | 重庆长安汽车股份有限公司 | Combined unlocking and locking system, method and storage medium |
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