CN112959973A - Rapid keyless unlocking system and unlocking method - Google Patents
Rapid keyless unlocking system and unlocking method Download PDFInfo
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- CN112959973A CN112959973A CN202110306105.XA CN202110306105A CN112959973A CN 112959973 A CN112959973 A CN 112959973A CN 202110306105 A CN202110306105 A CN 202110306105A CN 112959973 A CN112959973 A CN 112959973A
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- key
- body controller
- signal
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- vehicle body
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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
-
- 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
Abstract
The invention relates to a quick keyless unlocking system and an unlocking method, wherein the quick keyless unlocking system consists of a door handle switch, a vehicle body controller, a low-frequency antenna, an intelligent key signal receiver, a door module and a door lock; the quick keyless unlocking method comprises triggering a door handle switch, processing a door handle switch signal, and sending the signal to a vehicle body controller; the vehicle body controller drives the low-frequency antenna to send out a low-frequency signal, and the intelligent key is positioned through the low-frequency antenna; after receiving the legal signal, the intelligent key feeds back information to the intelligent key signal receiver through a high-frequency signal, the intelligent key signal receiver transmits the signal back to the vehicle body controller, and after the vehicle body controller judges that the signal is the legal key, the intelligent key signal receiver sends an unlocking command to the door module controller through the CAN; the door module drives the door lock to unlock. The quick keyless unlocking method can realize quick unlocking, so that the time for positioning the key is compressed to the maximum extent, and further, the quick keyless unlocking function is realized.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a quick keyless unlocking system and an unlocking method.
Background
At present, the keyless unlocking function of an automobile is basically popularized, but the experience effect is not friendly, and the keyless unlocking function is reflected in the response speed, namely, after a user touches or presses a door handle switch under the condition of carrying an intelligent key, the automobile door can be pulled open only after waiting for unlocking the automobile door (hearing the unlocking sound of the automobile door). Such a use experience is not good, and according to the investigation, the user is pursuing an experience that: carry the key, stretch and pull the door or press the door handle switch after, need not to wait for the door unblock deliberately, direct sliding door can be opened the door.
The prior art discloses an automobile keyless entry system, which comprises an induction lock and an induction key, wherein the induction lock comprises a first induction device, a first unlocking controller electrically connected with the first induction device, and a lock electrically connected with the first unlocking controller; the first induction device further comprises a first relay, a power supply end of the first RFID inductor is connected with a VCC power supply, the first RFID inductor is provided with a first electric signal output end electrically connected with one end of a coil J1 of the first relay, the other end of the coil J1 is grounded, the first RFID inductor is further provided with a second electric signal output end connected with one end of a contact KM-6 of the first relay, the other end of the contact KM-6 is connected with one end of a first microswitch, and the other end of the first microswitch is electrically connected with a first unlocking controller.
The prior art also discloses a wireless key system of a car, including: the microswitch is arranged on the automobile body and used for generating a trigger signal according to the trigger of a user; a microswitch background light; a body controller BCM; the wireless key module is used for detecting a trigger signal generated by the microswitch, controlling the microswitch background lamp according to the trigger signal so as to enable the microswitch background lamp to carry out input prompt on a user, generating a password input by the user according to the trigger signal generated by the microswitch and unlocking through the BCM when the password input by the user is consistent with a default password.
However, the above-mentioned wireless key system cannot realize instant quick unlocking, and unlocking of the car door is completed in the process of sliding the door, so as to improve the satisfaction degree of the user in the keyless unlocking function. Meanwhile, the response speed of keyless unlocking is not considered in the conventional unlocking scheme of the vehicle-enterprise, namely only functions are emphasized, but performances are ignored.
Disclosure of Invention
The invention aims to provide a quick keyless unlocking system and a quick keyless unlocking method, so as to solve the problem that the unlocking of a vehicle door is completed in the process of sliding the door, ensure the response speed of keyless unlocking and improve the satisfaction degree of a user.
The purpose of the invention is realized by the following technical scheme:
a quick keyless unlocking system comprises a doorknob switch 1, a vehicle body controller 2, a low-frequency antenna 3, an intelligent key 4, an intelligent key signal receiver 5, a door module 6 and a vehicle door lock 7;
the intelligent key 4 is communicated with the intelligent key signal receiver 5 through a high-frequency wireless signal; the key signal receiver 5 is connected with the vehicle body controller 2 through a wire harness; the vehicle body controller 2 is connected with the low-frequency antenna 3 through a wire harness; the low-frequency antenna 3 is in low-frequency wireless signal communication with the intelligent key 4; the door handle switch 1 is wirelessly connected with the vehicle body controller 2; the vehicle body controller 2 is in control connection with a controller of the door module 6; the controller of the door module 6 is in control connection with the door lock 7.
Further, the vehicle body controller 2 can drive the low-frequency antenna 3 to position the smart key 4, and the time required for the vehicle body controller 2 to drive one antenna to position the smart key 4 once is 100 ms.
Further, the low-frequency antenna 3 is used for positioning the smart key 4, and is arranged on the left front door panel, the horizontal position of the smart key is close to the B column, and the vertical position of the smart key is 5cm away from the glass boundary.
A quick keyless unlocking method comprises the following steps:
A. triggering a door handle switch 1, processing signals of the door handle switch 1, and sending the signals to a vehicle body controller 2, wherein the processing time is 30 ms;
B. the vehicle body controller 2 drives the low-frequency antenna 3 to send out a low-frequency signal, the intelligent key 4 is positioned through the low-frequency antenna 3, and the time is controlled within 370 ms;
C. after receiving the legal signal, the intelligent key 4 feeds back information to the intelligent key signal receiver 5 through a high-frequency signal, the intelligent key signal receiver 5 transmits the signal back to the vehicle body controller 2 for CAN signal processing, the processing time is 30ms, and after the vehicle body controller 2 judges that the signal is the legal key, the vehicle body controller 2 sends an unlocking command to a controller of the door module 6 through a CAN;
D. the door module 6 drives the vehicle and the door lock 7 to unlock, and the unlocking time is 170 ms.
Further, in step B, the low-frequency signal is a 125K signal.
Further, in step C, the information includes an identity ID, a field strength value, a key, and a battery level.
Further, in step C, the high-frequency signal is a 433.92MHz signal.
Further, the number of the smart keys 4 is 2, and the smart keys are divided into a key a and a key B, and the process of the vehicle body controller 2 judging the smart keys as legal keys is as follows: the automobile body controller 2 memorizes whether the key A or the key B is used every time a user leaves the automobile locking, if the key A is used, the automobile body controller 2 drives the low-frequency antenna to preferentially find the key A when the user uses the keyless unlocking function next time, and if the key A cannot be found, the key B is found once.
Further, if the key a is used, the next time the user uses the keyless unlocking function, the vehicle body controller 2 drives the low-frequency antenna 3 to search for the key a, and the search is repeated 2 times at most.
Compared with the prior art, the invention has the beneficial effects that:
the whole unlocking process is divided into 4 steps of door handle switch signal processing, positioning a key through a low-frequency antenna, CAN signal processing and door module driving door lock unlocking; through measurement and calculation, the unlocking of the vehicle door is finished after a user touches or presses the door handle, if the unlocking can be controlled within 600ms, the quick unlocking can be realized, in each link, the time for positioning the intelligent key accounts for more than 50%, and the processing time of other links is relatively fixed, so that the quick keyless unlocking of the vehicle door can be realized as long as the time for positioning the intelligent key is well controlled; the invention can compress the time for positioning the key to the maximum extent, thereby realizing the function of quick keyless unlocking.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a method of the present invention for fast keyless unlocking;
fig. 2 is a schematic structural diagram of the quick keyless unlocking system of the invention.
In the figure, 1, a door handle switch 2, a vehicle body controller 3, a low-frequency antenna 4, a smart key 5, a smart key signal receiver 6, a door module 7 and a vehicle door lock are arranged.
Detailed Description
The invention is further illustrated by the following examples:
the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example 1
As shown in fig. 1, the fast keyless unlocking system of the invention comprises a door handle switch 1, a vehicle body controller 2, a low-frequency antenna 3, an intelligent key 4, an intelligent key signal receiver 5, a door module 6 and a vehicle door lock 7; the intelligent key 4 is communicated with the intelligent key signal receiver 5 through a high-frequency wireless signal; the key signal receiver 5 is connected with the vehicle body controller 2 through a wire harness; the vehicle body controller 2 is connected with the low-frequency antenna 3 through a wire harness; the low-frequency antenna 3 is in low-frequency wireless signal communication with the intelligent key 4; the door handle switch 1 is wirelessly connected with the vehicle body controller 2; the vehicle body controller 2 is in control connection with a controller of the door module 6; the controller of the door module 6 is in control connection with the door lock 7.
The vehicle body controller 2 can drive the low-frequency antenna 3 to position the intelligent key 4, and the time required for positioning the intelligent key 4 once by driving one antenna by the vehicle body controller 2 is about 100 ms.
The low-frequency antenna 3 is used for positioning the intelligent key 4 and is arranged on a left front door panel, the horizontal position of the low-frequency antenna is close to the B column, and the vertical position of the low-frequency antenna is 5cm away from a glass boundary, so that a keyless unlocking area can be covered by the single antenna, namely, only the antenna is driven when the key is positioned, and the time for positioning the intelligent key 4 by all the multiple antennas is saved.
When the door handle switch 1 is triggered, the vehicle body controller 2 drives the low-frequency antenna 3 to send out a low-frequency signal (such as 125K), after the intelligent key 4 receives the legal signal, information (including an identity ID, a field intensity value, a secret key and battery power) is fed back to the intelligent key signal receiver 5 through a high-frequency signal (such as 433.92MHz), the intelligent key signal receiver 5 transmits the signal back to the vehicle body controller 2, after the vehicle body controller 2 judges that the key is legal, an unlocking command is sent to a controller of the door module 6, and the controller of the door module 6 drives the door lock 7 to unlock.
Example 2
A quick keyless unlocking method comprises the following steps:
1. triggering a door handle switch 1, processing signals of the door handle switch 1, and sending the signals to a vehicle body controller 2, wherein the processing time is 30 ms;
2. the vehicle body controller 2 drives the low-frequency antenna 3 to send out a low-frequency signal (such as 125K), the intelligent key 4 is positioned through the low-frequency antenna 3, and the time is controlled within 370 ms;
3. after receiving the legal signal, the intelligent key 4 feeds back information (including identity ID, field intensity value, secret key and battery capacity) to the intelligent key signal receiver 5 through a high-frequency signal (such as 433.92MHz), the intelligent key signal receiver 5 transmits the signal back to the vehicle body controller 2 for CAN signal processing, the processing time is 30ms, and after the vehicle body controller 2 judges that the signal is the legal key, an unlocking command is sent to the controller of the door module 6;
4. the door module 6 drives the door lock 7 to unlock, and the unlocking time is 170 ms.
A vehicle conventionally matches 2 the key fob 4 into consideration, and 2 keys are named key a and key B. Thus, the process of the vehicle body controller 2 determining that the key is valid is as follows: whether the key a or the key B is used is memorized by the vehicle body controller 2 every time the user gets out of the vehicle to lock the vehicle. If the key A is used, the vehicle body controller 2 drives the low-frequency antenna 3 to preferentially find the key A (repeatedly find for 2 times at most) when the user uses the keyless unlocking function next time, and searches the key B once if the key A cannot be found, so that the antenna is driven to find the legal key once with high probability because the situation that the user frequently changes the key is not many. This can reduce the time required for finding the key. (most work conditions can be found by finding the intelligent key 4 once, and few work conditions need to be found three times)
The invention provides the requirement of the arrangement position of the low-frequency antenna for quick keyless unlocking, and the position of the intelligent key 4 can be positioned by only using 1 antenna; a method for positioning a legal intelligent key is provided, and a key used by a user last time is preferentially found, so that the time consumed for positioning the intelligent key 4 can be reduced; according to the method, the antenna arrangement position and the key positioning strategy are determined only in the early stage of design, extra hardware is not needed, the response speed of keyless unlocking can be increased, and therefore the satisfaction degree of a user on the keyless unlocking function is improved. The user carries the intelligent key, and the door handle switch 1 is directly triggered without pressing an unlocking button on the remote control key, so that the vehicle can be unlocked.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. A quick keyless unlocking system is characterized in that: the intelligent door lock is composed of a door handle switch (1), a vehicle body controller (2), a low-frequency antenna (3), an intelligent key (4), an intelligent key signal receiver (5), a door module (6) and a vehicle door lock (7);
the intelligent key (4) is communicated with the intelligent key signal receiver (5) through a high-frequency wireless signal; the key signal receiver (5) is connected with the vehicle body controller (2) through a wire harness; the vehicle body controller (2) is connected with the low-frequency antenna (3) through a wire harness; the low-frequency antenna (3) is in communication with the intelligent key (4) through low-frequency wireless signals; the door handle switch (1) is in wireless connection with the vehicle body controller (2); the automobile body controller (2) is in control connection with a controller of the door module (6); the controller of the door module (6) is in control connection with the door lock (7).
2. A rapid keyless unlocking system according to claim 1 wherein: the vehicle body controller (2) can drive the low-frequency antenna (3) to position the intelligent key (4), and the time required by the vehicle body controller (2) to drive one antenna to position the intelligent key (4) once is 100 ms.
3. A rapid keyless unlocking system according to claim 1 wherein: the low-frequency antenna (3) is used for positioning the intelligent key (4) and is arranged on a left front door panel, the horizontal position of the low-frequency antenna is close to the B column, and the vertical position of the low-frequency antenna is 5cm away from the glass boundary.
4. A quick keyless unlocking method is characterized by comprising the following steps:
A. triggering a door handle switch (1), processing signals of the door handle switch (1), and sending the signals to a vehicle body controller (2), wherein the processing time is 30 ms;
B. the vehicle body controller (2) drives the low-frequency antenna (3) to send out a low-frequency signal, the intelligent key (4) is positioned through the low-frequency antenna (3), and the time is controlled within 370 ms;
C. after receiving the legal signal, the intelligent key (4) feeds information back to the intelligent key signal receiver (5) through a high-frequency signal, the intelligent key signal receiver (5) transmits the signal back to the vehicle body controller (2) for CAN signal processing, the processing time is 30ms, and after the vehicle body controller (2) judges that the signal is the legal key, the vehicle body controller (2) sends an unlocking command to a controller of the door module (6) through the CAN;
D. the door module (6) drives the vehicle and the vehicle door lock (7) to unlock, and the unlocking time is 170 ms.
5. The method for fast keyless unlocking according to claim 4, wherein: and step B, the low-frequency signal is a 125K signal.
6. The method for fast keyless unlocking according to claim 4, wherein: and step C, the information comprises an identity ID, a field intensity value, a secret key and battery electric quantity.
7. The method for fast keyless unlocking according to claim 4, wherein: and step C, the high-frequency signal is a 433.92MHz signal.
8. The method for fast keyless unlocking according to claim 4, wherein: the intelligent keys are 2 and are divided into a key A and a key B, and the process that the automobile body controller (2) judges the intelligent keys to be legal keys is as follows: the automobile body controller memorizes whether the key A or the key B is used by the automobile body controller when a user leaves the automobile locking automobile, if the key A is used, the automobile body controller (2) drives the low-frequency antenna (3) to preferentially find the key A when the user uses the keyless unlocking function next time, and if the key A cannot be found, the key B is found once.
9. A method for fast keyless unlocking according to claim 8 wherein: if the key A is used, the automobile body controller (2) drives the low-frequency antenna (3) to repeatedly search for the key A at most for 2 times when the user uses the keyless unlocking function next time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110306105.XA CN112959973A (en) | 2021-03-23 | 2021-03-23 | Rapid keyless unlocking system and unlocking method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110306105.XA CN112959973A (en) | 2021-03-23 | 2021-03-23 | Rapid keyless unlocking system and unlocking method |
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| CN112959973A true CN112959973A (en) | 2021-06-15 |
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| CN202110306105.XA Pending CN112959973A (en) | 2021-03-23 | 2021-03-23 | Rapid keyless unlocking system and unlocking method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113997886A (en) * | 2021-11-11 | 2022-02-01 | 一汽奔腾轿车有限公司 | Remote diagnosis method for abnormal unlocking of vehicle door based on TBOX |
| CN114084095A (en) * | 2021-10-26 | 2022-02-25 | 一汽奔腾轿车有限公司 | Keyless unlocking method and device for vehicle, terminal and storage medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114084095A (en) * | 2021-10-26 | 2022-02-25 | 一汽奔腾轿车有限公司 | Keyless unlocking method and device for vehicle, terminal and storage medium |
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