Vehicle key position change recognition and feedback method, system, and vehicle

Abstract

The application provides a vehicle key position change identification and feedback method, system and vehicle, wherein the method comprises: presetting a first priority list and a second priority list for dividing the priority of the key area; when receiving a request for searching the key position, driving the corresponding antenna to search the key according to the first priority list in the order from high to low; when receiving the key signal, immediately stopping the search, and the corresponding key area is the key position; when all key areas are searched and no key signal is received, judging that there is no key; when receiving a request for searching the key movement state, driving the corresponding antenna to continuously search whether there is a key and the information of the key according to the second priority list in the order from high to low, comparing the search results each time, judging whether the key moves between the key areas and the moving track, and the key movement state.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of vehicle key positioning, and particularly relates to a vehicle key position change identification and feedback method and system and a vehicle. BACKGROUND

[0002] At present, there are many key position judgment and key position change judgment in existing vehicle functions, which can be divided into key authentication for judging key position movement and authentication for judging key position only according to functions.

[0003] For the authentication for judging key position only, the existing technology only simply proposes vehicle key authentication and return of whether the key is outside the vehicle, but does not propose how to authenticate and how to judge. In the existing technology, all are the results of key authentication of the main driver PE area and return of whether the key is in the main driver PE area, and the results of key authentication in the vehicle and return of whether the key is in the vehicle. In this way, each vehicle function needs to judge the authentication of the key in the corresponding position, so it is necessary to increase the logic and authenticate the key positions one by one, which increases the complexity of software development and does not have software follow-up.

[0004] For the key authentication for judging key position movement, the existing technology only simply describes the key position movement, detects that the key is from the vehicle welcome area to the PE area, and the vehicle can be unlocked, but does not describe in detail how to judge the key position movement. Generally, there are two methods for authentication. The first method is to authenticate the welcome area key first, detect that the key is in the welcome area, authenticate the key in the PE area, and consider that the key is from the welcome area to the PE area when detecting that there is a key in the PE area. The second method is to authenticate the welcome area key, continue to authenticate the welcome area when detecting that there is a key in the welcome area, authenticate the key in the PE area after there is no key in the welcome area, and authenticate the key from the welcome area to the PE area when detecting that there is a key in the PE area. The vehicle is unlocked. However, the above method is only applicable to vehicles with one key and is not applicable to vehicles with multiple keys. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a vehicle key position change identification and feedback method, system and vehicle, which can be applied to multiple keys and various functions based on key position.

[0006] The technical scheme adopted by the present application to solve the above technical problem is:

[0007] On the one hand, the present application provides a vehicle key position change identification and feedback method,

[0008] The first priority list and the second priority list for dividing the priority of the key area are preset; the key area is a plurality of areas divided by a certain area inside and outside the vehicle, and each key area has a corresponding antenna;

[0009] When a request for the key location is received, the corresponding antenna is driven to search for the key according to the first priority list in order of high to low priority; when a key signal is received, the search is immediately stopped, and the corresponding key area is the key location; when all key areas are searched and no key signal is received, it is determined that there is no key;

[0010] When a request for the key movement state is received, the corresponding antenna is continuously driven to search for the key and the information of the key according to the second priority list in order of high to low priority, and the search results are compared each time to determine whether the key moves between the key areas and the moving track, which is the key movement state.

[0011] According to the above method, each key area corresponds to one antenna, the key area located in the vehicle corresponds to one antenna in the vehicle, and the key area located outside the vehicle corresponds to one antenna closest to the vehicle; the first priority list includes the key area located in the vehicle and the key area located outside the vehicle; and the second priority list only includes the key area located outside the vehicle.

[0012] According to the above method, when a request for the key location is received, the antenna in the vehicle is first driven to search for the key, and it is determined whether there is a key located in the vehicle, and the information of the key located in the vehicle is recorded;

[0013] Then, the key area with the highest priority in the first priority list is selected, if the selected current key area is located outside the vehicle, the corresponding antenna is driven to search, when the key is searched and is not the key located in the vehicle, it is determined that the key location is in the key area with the highest priority, the search is stopped, and the key frequently used by the owner is updated in real time as the current key; if the selected current key area is located outside the vehicle and no key is searched, or the searched key is the key located in the vehicle, the next priority key area in the first priority list is selected, and the corresponding antenna is driven to search; if the selected current key area is located in the vehicle and the key located in the vehicle is not 0, the recorded information of the key located in the vehicle is directly fed back; if the selected current key area is located in the vehicle and the information of the key located in the vehicle is empty, the next priority key area in the first priority list is selected, and the corresponding antenna is driven to search;

[0014] If all the key areas with priority in the first priority list are not searched, it is determined that the key is invalid.

[0015] The driving of the corresponding antenna to search is specifically driving the corresponding antenna to emit a low-frequency signal; when a high-frequency signal with a field strength greater than a field strength threshold is received and authentication is passed, it is determined that the key of the vehicle is searched.

[0016] The priority order in the first priority list is automatically updated according to the purpose of the key location request and specific working conditions.

[0017] According to the method, when the purpose of the key location request is to lock the vehicle, the priority order is updated by a door opening signal: the PE area corresponding to the last opened door is taken as the key area with the highest priority.

[0018] According to the method, the second priority list comprises two levels of priorities.

[0019] The search of the key movement state is specifically as follows:

[0020] When the request for the key movement state is received, it is first determined whether there is a key in the vehicle, and the information of the key in the vehicle is recorded.

[0021] Then, the first round of search is performed: the corresponding antenna is driven to continuously search for a key according to the priority order from high to low in the second priority list, and the information of the key is recorded; according to the information of the key searched in the two levels of priorities, the key in the vehicle is excluded, it is determined whether the key has moved from a key area with a higher priority to a key area with a lower priority, if yes, the movement track of the key is returned, and if no, the information of the searched key is returned and the next round of search is performed.

[0022] The next round of search is: the corresponding antenna is driven to continuously search for a key according to the priority order from high to low in the second priority list, and the information of the key is recorded, as well as the information of the searched key returned in the last round of search; according to the information of the key searched in the two levels of priorities, as well as the information of the searched key returned in the last round of search, the key in the vehicle is excluded, it is determined whether the key has moved from a key area with a higher priority to a key area with a lower priority, if yes, the movement track of the key is returned, and if no, the information of the searched key is returned and the next round of search is continued.

[0023] According to the method, the first round of search specifically comprises:

[0024] The key area with a higher priority in the second priority list is selected, and the corresponding antenna is driven to search; when the vehicle key is searched and does not belong to the key in the vehicle, the information of the key located in the key area with a higher priority is recorded, and the current round of search is continued; if the vehicle key is not searched, or all the searched vehicle keys are the key in the vehicle, no key is returned, the current round of search is ended, and the next round of search is continued.

[0025] The continuing the current round of searching is: selecting a key area with lower priority, driving the corresponding antenna to search, when the same key as the key area with higher priority is searched, it is judged that the key moves from the key area with higher priority to the key area with lower priority, the moving track of the key is returned, and the searching is ended; otherwise, the current round of searching is ended, the key information in the key area with higher priority is returned, and the next round of searching is continued.

[0026] According to the above method, the next round of searching is specifically:

[0027] The key area with higher priority in the second priority list is selected, the corresponding antenna is driven to search, when the car key is searched and does not belong to the in-vehicle key, the car key and the searched key information returned in the last round of searching are summarized and used as the key information in the key area with higher priority, and the current round of searching is continued; if the car key is not searched or all the searched car keys are the in-vehicle keys, but there is key information in the key area in the last round of searching, only the searched key information returned in the last round of searching is used as the key information in the key area with higher priority, and the current round of searching is continued; if the car key is not searched or all the searched car keys are the in-vehicle keys, and there is no key information in the key area in the searched key information returned in the last round of searching, no key is returned, the current round of searching is ended, and the next round of searching is continued.

[0028] The continuing the current round of searching is: selecting a key area with lower priority, driving the corresponding antenna to search, when the same key as the key area with higher priority is searched, it is judged that the key moves from the key area with higher priority to the key area with lower priority, the moving track of the key is returned, and the searching is ended; otherwise, the current round of searching is ended, the key information in the key area with higher priority is returned, and the next round of searching is continued.

[0029] According to the above method, the second priority list is divided into a plurality of second sub-tables according to the purpose of searching for the key, and the priority order of each second sub-table is set according to the purpose.

[0030] When the request for the key moving state is received, the corresponding second sub-table is selected according to the purpose of searching for the key moving state contained in the request, and the corresponding antenna is driven to search according to the priority from high to low in the second sub-table.

[0031] According to the above method, the driving the corresponding antenna to search is specifically:

[0032] The corresponding antenna is driven to emit a low-frequency signal, and a certain time length is waited for, which is used to ensure that the signals of all keys are received; the time length and the total number of keys are determined according to the setting when the keys are bound.

[0033] According to the method, the authentication is specifically: if the ESK code of the key end in the identified high-frequency signal is the same as the ESK code in the low-frequency signal, it is determined that the authentication is passed; otherwise, the authentication is not passed.

[0034] The ESK code is learned when the key is bound.

[0035] In a second aspect, the application provides a vehicle key position change identification and feedback system, which is arranged in a body controller and comprises:

[0036] A storage unit is provided with a first priority list and a second priority list for dividing the priority of the key area; the key area is a plurality of areas divided by a certain area in the vehicle and outside the vehicle, and each key area has a corresponding antenna;

[0037] A key searching position module is used to drive the corresponding antenna to search for the key in order of high to low priority according to the first priority list when a request for searching for the key position is received; when the key signal is received, the search is immediately stopped, and the corresponding key area is the key position; when all key areas are searched and no key signal is received, it is determined that there is no key.

[0038] A key movement state module is used to drive the corresponding antenna to continuously search for the key and the number of keys in order of high to low priority according to the second priority list when a request for searching for the key movement state is received, and the search results are compared each time to determine whether the key moves between the key areas and the movement trajectory, which is the key movement state.

[0039] In a third aspect, the application provides a body controller comprising the vehicle key position change identification and feedback system.

[0040] In a fourth aspect, the application provides a vehicle comprising the body controller.

[0041] The application has the following beneficial effects: the key area is divided into priority levels, different priority levels are set according to different functions, and then search strategies are set according to the corresponding priority levels for different functions to respectively complete the key position feedback logic according to the key position priority list and the key position feedback logic for judging the movement of the key position from high priority to low priority. The search strategy takes into account all keys and two types of functions, is suitable for the case of multiple keys, and when a new function request is received, only the priority list corresponding to the function needs to be developed to obtain the desired key position feedback. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1is a schematic diagram of the principle of an embodiment of the invention.

[0043] Figure 2 is a key learning control flowchart.

[0044] Figure 3 is a key learning parameter schematic diagram.

[0045] Figure 4 is a flowchart of key position searching in an embodiment of the invention. DETAILED DESCRIPTION

[0046] In order to make the objects, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0047] In the description of the present application, it should be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0048] Noun explanation:

[0049] Welcome area: the area within a certain close range of the vehicle, used to detect the automatic opening of the outside light of the vehicle window or the horn mode to remind the user.

[0050] PE area: Passive Entry, located in the unlock button area of the door handle.

[0051] CCM: Chassis Control Module, vehicle body controller.

[0052] ESK code: Electronic Secret Key, electronic security key, matching the key code for anti-theft use.

[0053] The present application provides a vehicle key position change recognition and feedback method, system and vehicle, which can be set in the CCM, taking two major function request categories as input, different functions corresponding to different key position priority lists, respectively completing the key position feedback logic according to the key position priority list and the key position feedback logic for judging the movement of the key position from high priority to low priority. The present application can be applied to multiple keys and various functions based on key position.

[0054] The vehicle model suitable for the application needs at least one antenna in the vehicle and three antennas outside the vehicle (main driver antenna, co-driver antenna and tailgate antenna). The vehicle can include three antennas, which correspond to the front, middle and rear three areas in the vehicle.

[0055] In the process of binding the key and the vehicle, the ESK code of the vehicle is first written into the central processing controller through diagnosis, and the specific process is as shown in Figure 2

[0056] S201, when no key is learned, the ESK code corresponding to the vehicle is written, and the initial value of the number of learned keys Num is 0.

[0057] S202, it is judged whether there is a key learning requirement, if yes, S203 is entered, and if no, it is returned.

[0058] S203, the number of learned keys Num is read, and Key_Num is assigned as Num+1. Key_Num represents the number of the learned key.

[0059] S204, the ESK code and Key_Num are sent to the key end through driving a certain specific antenna (determined by the manufacturer, one of the antennas installed on the vehicle). The key end saves and memorizes the ESK code and Key_Num, and sends the key ID.

[0060] S205, the key ID sent by the key end is received, and the key ID is saved and memorized. The IDs of different keys are different, so the stored key ID and Key_Num are in one-to-one correspondence.

[0061] S206, the number of learned keys is set as Key_Num.

[0062] After the Key_Num key learning is completed, it is returned to continue to detect whether there is a key learning requirement.

[0063] Through the above key learning control, the ESK code, the total number of keys and the ID of each key are recorded, as shown in Figure 3 , for subsequent method calling of the application.

[0064] On the one hand, the application provides a vehicle key position change recognition and feedback method, as shown in Figure 1 , including the following steps:

[0065] S101, a first priority list and a second priority list for dividing the priority of the key area are preset; the key area is a plurality of areas divided by a certain area in the vehicle and outside the vehicle, and each key area has a corresponding antenna.

[0066] ​Each of the key areas corresponds to one antenna, the key area in the vehicle corresponds to one antenna in the vehicle, and the key area outside the vehicle corresponds to the nearest antenna outside the vehicle; in the first priority list, the priority of the key area in the vehicle is higher than that of the key area outside the vehicle; and the second priority list only contains the key area outside the vehicle.

[0067] In this embodiment, the key area is divided into an in-vehicle area and an out-of-vehicle area, and the out-of-vehicle area includes a main driver PE area, a co-driver PE area, a tailgate PE area, a main driver welcome area, a co-driver welcome area, and a tailgate welcome area. In the first priority list, the in-vehicle area and the out-of-vehicle area are included. In the second priority list, only the out-of-vehicle area is included. The main driver PE area / main driver welcome area corresponds to the main driver antenna; the co-driver PE area / co-driver welcome area corresponds to the co-driver antenna; and the tailgate PE area / tailgate welcome area corresponds to the tailgate antenna. Further refinement, according to actual needs, the main driver welcome area, the co-driver welcome area, and the tailgate welcome area can be further divided according to the distance from the vehicle. For example, the main driver welcome area is divided into the main driver welcome area 1, the main driver welcome area 2, and the main driver welcome area 3 according to the distance from the main driver PE area from far to near. These are associated with the corresponding functions. This embodiment only gives the idea of vehicle key position change recognition and feedback, and each vehicle can adaptively adjust the division of the key area according to the actual function.

[0068] The first priority list is shown in Table 1, and N priority levels are set according to the functional needs, wherein the priority level 1 has the highest priority, and the priority level N has the lowest priority. The key area corresponding to each priority level is recorded.

[0069] Table 1

[0070] Priority 1 Priority 2 Priority 3 Priority... Priority N Position of Priority 1 (e.g. main driver PE zone) Position of Priority 2 (e.g. co-driver PE zone) Position of Priority 3 (e.g. tailgate PE zone) … Position of Priority N

[0071] S102, when receiving a request for the key position, driving the corresponding antenna to search for the key according to the order of the first priority list from high to low; when receiving the key signal, immediately stopping the search, and the corresponding key area is the key position; when all key areas are searched and no key signal is received, it is judged that there is no key.

[0072] When the antenna is driven to send low frequency signal, the key receives the low frequency signal, and judges whether the key and the vehicle sending the low frequency correspond, and when the key judges that the ESK code in the key and the ESK code in the low frequency are the same (the key is the key learned by the vehicle sending the low frequency), the high frequency is returned. But a vehicle can learn multiple keys, and multiple keys return high frequency at the same time, which can cause signal interference, and can cause high frequency information extraction failure, and further cause key authentication failure. Therefore, in order to prevent interference, the antenna needs to be driven one by one, and the antenna sends low frequency signal, and the key returns high frequency signal. The key needs to return high frequency one by one, and the timeout time of all keys returning high frequency is Tmax, so the interval time of each key returning high frequency is Tmax divided by Key_Num (the total number of learned keys can be obtained according to Key_Num), that is, after receiving the low frequency signal, a key first judges the low frequency, and confirms whether to return high frequency, Tmax / Key_Num time after, another key judges the low frequency, and confirms whether to return high frequency, 2*Tmax / Key_Num time after, another key judges the low frequency, and confirms whether to return high frequency, until all keys are judged. In addition to the keys returning high frequency data one by one, the order of the keys returning high frequency data also needs to be arranged. The closer the key is to the antenna, the stronger the field strength of the key is, so the distance of the key from the antenna can be judged according to the field strength in the high frequency data returned by the key. In the embodiment, when the antenna recognizes the key and the field strength is greater than a certain value, it means that the key is near the antenna.

[0073] The principle of searching for the key position is that the CCM drives the antenna to send low frequency signal, and when the high frequency signal returned by the key is received, the key is authenticated based on the foregoing ESK code, and it is judged whether it is the key of the vehicle, and the position of the key is confirmed based on the field strength information in the high frequency signal and the antenna (the key is near the driven antenna).

[0074] The searching for the key position is specifically as follows:

[0075] S1021, when receiving the request for searching for the key position, the antenna in the vehicle is first driven to search for the key, it is judged whether the key is located in the vehicle, and the information of the key located in the vehicle is recorded. That is, the antenna in the vehicle sends low frequency signal, when the high frequency signal with field strength greater than the field strength threshold value is received, and the authentication is passed, it is confirmed that it is the key of the vehicle, and it is explained that the key of the vehicle is located in the vehicle. The information of the key includes: ESK code, ID of the key (that is, which key), and position of the key (that is, key area). The purpose of this is that the antenna outside the vehicle can search for the key in the vehicle, so if the key area is outside the vehicle, the key in the vehicle needs to be excluded.

[0076] S1022, select the key area with the highest priority in the first priority list, and drive the corresponding antenna to search. The search process is the same as the in-vehicle antenna, which emits low-frequency signals and receives high-frequency signals with a field strength greater than the field strength threshold, and needs to be authenticated as the car key. The following description of the specific search process is omitted, and only the search result is described.

[0077] 1) If the selected current key area is located outside the vehicle, drive the corresponding antenna to search, when the key is found and is not the key located in the vehicle, confirm that the key position is located in the highest priority key area, stop searching, and update the key frequently used by the owner as the current key in real time.

[0078] 2) If the selected current key area is located outside the vehicle, and no key is found, or the found key is the key located in the vehicle, select the next priority key area in the first priority list, and drive the corresponding antenna to search.

[0079] 3) If the selected current key area is located in the vehicle, directly feedback the key located in the vehicle and the information recorded in S1021. For example: if the key located in the vehicle recorded in S1021 is not 0, directly return the key located in the vehicle and the information; if the information of the key located in the vehicle recorded in S1021 is empty, select the next priority key area in the first priority list, and drive the corresponding antenna to search.

[0080] If no key is found in all priority key areas in the first priority list, return that the key is invalid.

[0081] When there are multiple keys, the keys are sorted, and the keys return high frequency in order to avoid signal interference. The initial order is the order of key learning. After each search for the key position, the located key is updated as the key frequently used by the owner, that is, sorted first, and the order of other keys is moved back in turn.

[0082] The priority order in the first priority list is automatically updated and adjusted according to the purpose of the key search request and the specific working conditions. For example: when the purpose of the key search request is to lock the car away, and the priority order is updated through the door closing signal: the PE area corresponding to the last closed door is the highest priority key area. If the last closed door is the driver's door, the highest priority driver's door PE area, similarly, if the last closed door is the co-driver's door / rear door, the highest priority co-driver's door / rear door PE area, therefore the feedback priority of the key position corresponding to different functions and different working conditions is different.

[0083] The first priority list corresponding to different functions / working conditions can be specified, and the key position logic of the patent is combined to reasonably drive the antenna to search for the key, the key position can be directly fed back according to the priority list, and when the key in the position with high priority is searched, the key position is returned immediately, the key position judgment time is reduced, the antenna is no longer driven to judge the key position one by one, the software complexity is reduced, and the application can be used for any key position request function, which brings certain convenience to software development engineers.

[0084] No matter which key position request is triggered, the key in the vehicle is not repeatedly judged, and the key position feedback speed is improved. The application is suitable for all vehicle functions that need to search for the key position in the vehicle, and when the vehicle function is increased subsequently, the strategy of the application can be directly used, secondary development is no longer needed, software follow-up is improved, and the workload of software development engineers is reduced.

[0085] S103, when receiving the request for the key movement state, the corresponding antennas are continuously searched for whether there is a key and the number of keys according to the order from high to low of the priority of the second priority list, and the search results are compared each time to judge whether the key moves between the key areas and the moving track, that is, the key movement state.

[0086] The search of the key movement state is specifically as follows:

[0087] S1031, when receiving the request for the key movement state, it is first judged whether there is a key in the vehicle, and the information of the key in the vehicle is recorded. Generally, when the key movement state is judged, only the area outside the vehicle is considered, but when the antenna outside the vehicle receives high-frequency signals, the key in the vehicle is also searched. Therefore, the key in the vehicle is searched first, and then the key in the vehicle is excluded when the antenna outside the vehicle is searched. The process of judging whether there is a key in the vehicle is specifically as follows: driving the antenna inside the vehicle to send low-frequency signals, when at least one high-frequency signal with a field strength greater than a field strength threshold is received and authentication is passed, it is judged that the key is in the vehicle, the number of keys in the vehicle is judged according to the number of received high-frequency signals, and the information of the key is obtained according to the authentication process.

[0088] S1032, the corresponding antennas are continuously searched for whether there is a key according to the order from high to low of the priority of the second priority list, and the information of the key is recorded; according to the key information searched by the two levels of priority, the key in the vehicle is excluded, it is judged whether the key moves from the key area with high priority to the key area with low priority, if yes, the moving track of the key is returned, and if no, the searched key information is returned and jumps to S1033.

[0089] For example, the first round of searching includes: selecting the key area with higher priority in the second priority list, driving the corresponding antenna to search, when the car key is found and does not belong to the in-vehicle key, recording the key information in the key area with higher priority, and continuing the current round of searching; if the car key is not found or all the found car keys are in-vehicle keys, returning no key, ending the current round of searching, and continuing S1033.

[0090] The continuing the current round of searching includes: selecting the key area with lower priority, driving the corresponding antenna to search, when the same key as the key area with higher priority is found, judging that the key has moved from the key area with higher priority to the key area with lower priority, returning the moving track of the key, and ending the search; otherwise, ending the current search, returning the key information in the key area with higher priority, and continuing S1033.

[0091] S1033, driving the corresponding antenna to continuously search for the key according to the order of the priority of the second priority list from high to low, recording the information of the key and the searched key information returned in the last round of searching; according to the searched key information and the searched key information returned in the last round of searching, excluding the in-vehicle key, judging whether the key has moved from the key area with higher priority to the key area with lower priority, if yes, returning the moving track of the key, if no, returning the searched key information and repeating the step.

[0092] For example, S1033 includes:

[0093] selecting the key area with higher priority in the second priority list, driving the corresponding antenna to search, when the car key is found and does not belong to the in-vehicle key, summarizing the car key and the searched key information returned in the last round of searching, and taking them as the key information in the key area with higher priority, continuing the current round of searching; if the car key is not found or all the found car keys are in-vehicle keys, but there is key information in the key area in the last round of searching, only taking the searched key information returned in the last round of searching as the key information in the key area with higher priority, continuing the current round of searching; if the car key is not found or all the found car keys are in-vehicle keys, and there is no key information in the key area in the searched key information returned in the last round of searching, returning no key, ending the current round of searching, and continuing the next round of searching;

[0094] The continuing the current round of searching is: selecting a lower priority key area, driving the corresponding antenna to search, when the same key as the key in the higher priority key area is found, it is judged that the key has moved from the higher priority key area to the lower priority key area, the moving track of the key is returned, and the searching is ended; otherwise, the current round of searching is ended, the key information in the higher priority key area is returned, and the next round of searching is continued.

[0095] When there are three levels of priorities, the principle is the same as above, which is not repeated here.

[0096] The second priority list is divided into several second sub-tables according to the purpose of searching for the key, and the priority order of each second sub-table is set according to the purpose; when receiving a request for the key movement state, first, the corresponding second sub-table is selected according to the purpose of the key movement state contained in the request, and then the corresponding antenna is driven to search according to the priority from high to low in the second sub-table.

[0097] In the process of searching for the key movement state, the corresponding antenna is driven to emit a low-frequency signal, and then a certain time length is waited to ensure that the signals of all keys are received; the time length and the total number of keys are determined according to the setting when the keys are bound.

[0098] In this embodiment, the in-vehicle key list, the key authentication priority sequence N, and the authentication flag Flg are set. According to the request for the key location, it is determined whether the in-vehicle key list is cleared 0 (the first authentication must be cleared 0, and only the second and subsequent authentications in continuous authentication and the vehicle door state is always in the closed state (the in-vehicle key list of the first authentication in this working condition can be used, so there is no need to repeat the authentication, which avoids the increase of the key position feedback time) ), and the key authentication priority sequence is determined. When the key authentication priority sequence N is -1 / 0, the in-vehicle key is authenticated, and other values are the position authentication of the Nth priority, such as N equal to 3, which is to judge whether the key is in the priority 3 position.

[0099] As shown in Figure 4 When the request for the key location function is received, only the key position needs to be returned once, so the in-vehicle key list is cleared 0, the key authentication priority sequence is equal to -1, the number of antenna authentications M is 0, and the authentication flag Flg is 0. Then, according to different requests for the key location, the key position is fed back according to the corresponding several first sub-tables of the first priority list. The specific searching logic has been recorded in S102, which is not repeated here. By corresponding each function to a sub-table of the priority list, when a new function is added in the future, only a sub-table needs to be added, without the need to reset the authentication process, which has strong expansibility.

[0100] When the received is the function position request of judging the key movement, at this time, continuous authentication is needed, the first time authentication, the key list in the car is cleared 0, and the key authentication priority sequence is equal to -1; in the subsequent authentication, the key list in the car is not cleared 0, and the key authentication priority sequence is equal to 1 (no need to repeatedly authenticate the key in the car).

[0101] In some embodiments, firstly, it is judged whether it is not in the key authentication process and the jump of the key movement function position request is received.

[0102] If yes, it is indicated that it is the first authentication request, the key authentication process is entered, and the key authentication priority sequence N = -1 (authentication of the key in the car); the antenna authentication times M = 0 (the maximum authentication times of each antenna is Mmax); the authentication flag Flg = 0 (no authentication is performed, and the low-frequency antenna needs to be driven for authentication); the key list in the car = 0; the first authentication Flg = 1 (the first authentication). Then, the key position feedback priority order corresponding to the received key position request / key movement function position request is determined. For example, in the process of leaving the car and locking, if the last door closed is the co-driver, the key position priority of the co-driver PE area is the highest, and the key position priority of the main driver / rear door is the second; in the process of welcome unlocking, if the welcome unlocking condition is met when the key is moved from the corresponding welcome area to the PE area, the priority 1 position is the welcome area, and the priority 2 position is the PE area. For example, the key is moved from the main driver welcome area to the main driver PE area.

[0103] If not, it is judged whether it is not in the key authentication process and the state signal of the key movement function position request is received, if yes, the key authentication process is entered, and the key authentication priority sequence N = 1 (no need to repeatedly authenticate the key in the car); the antenna authentication times M = 0; the authentication flag Flg = 0; the first authentication Flg = 0, and then the key position feedback priority order corresponding to the received key position request / key movement function position request is determined.

[0104] Further, in some embodiments, when the request of the key position movement state is received, the key position needs to be continuously judged. For example, the key position priority list of the function position request of judging the key movement in some functions is shown in Table 2. The position of the priority indicates that it is judged whether the key is moved from the priority 1 position to the priority 2 position to the priority 3 position, and the result is directly judged according to the key position return result. If it is judged that the key changes between more positions, the strategy is similar. In this embodiment, the main driver welcome area 1 is far away from the main driver PE area, the main driver welcome area 2 is close to the main driver PE area, and it is judged that the key is close to the main driver PE area from far to near.

[0105] Table 2

[0106]

[0107] In the first round of searching, the in-vehicle key is searched first, and then the first search is started to directly search whether there is a key in the position of priority 1, how many keys there are, if there is, the in-vehicle key is excluded, the position of priority 1 and the key ID are returned, and the second search is carried out; if not, no key is returned;

[0108] In the second search, it is judged whether there is a key in the position of priority 2, and it is identified whether the key ID is the key in the position of priority 1 in the first search, if yes, it indicates that the key is moved from the position of priority 1 to the position of priority 2, the moved key ID is recorded, and the third search is continued; if not, it is returned that the key movement is invalid, and the position and ID of the last key are given;

[0109] In the third search, it is judged whether there is a key in the position of priority 3, and it is identified whether the key is the key moved from the position of priority 1 to the position of priority 2 in the second search, if yes, it indicates that the key is moved from the position of priority 1 to the position of priority 2 and then to the position of priority 3; if not, it is returned that the key movement is invalid, and the position and ID of the last key are given.

[0110] When it is returned that the key movement is invalid, the request of the key search movement state is always on, and the result of the last round of search needs to be used in the next round of search, and then further judgment is made.

[0111] It should be noted that the key search process cannot be parallel, and the search of the next request needs to be carried out after the search of the previous request is completed. A first-in-first-out cache area can be set to record the received requests and complete them in chronological order.

[0112] Based on the above vehicle key position change identification and feedback method, the application also provides a corresponding vehicle key position change identification and feedback system, which is arranged in a body controller and comprises:

[0113] A storage unit is provided with a first priority list and a second priority list for dividing the priority of the key area; the key area is a plurality of areas divided by a certain area in the vehicle and outside the vehicle, and each key area has a corresponding antenna. The first priority list and the second priority list can respectively include a plurality of sub-tables, the priority order in each sub-table is different, and each sub-table corresponds to a key search position / key search movement state function.

[0114] The key searching position module is configured to, when receiving a request for searching for a key position, drive the corresponding antenna to search for a key according to the first priority list in a high-to-low order of priority, and stop searching as soon as a key signal is received, so that the corresponding key area is the key position; when all key areas are searched and no key signal is received, it is determined that there is no key. Since the key searching position is only required to determine whether the corresponding position under the corresponding function has a key, the key is searched only once, and the searching is stopped as soon as the key is found, so that the purpose is achieved without the need for continuous searching. The detailed searching method is described in S102, and will not be repeated here.

[0115] The key moving state module is configured to, when receiving a request for searching for a key moving state, drive the corresponding antenna to continuously search for whether there is a key and the number of keys according to the second priority list in a high-to-low order of priority, and compare the searching results each time to determine whether a key moves between the key areas and the moving track, that is, the key moving state. Under some functions, the key is required to move along a predetermined moving track to trigger the function. Therefore, the position of the key is continuously searched, and whether the key moves is identified according to the searching results before and after. For example, when there are two keys in the priority 1 position, and then one key in the priority 2 position is found by continuous searching, and the key in the priority 2 position is one of the keys in the priority 1 position, it is determined that one key moves from the priority 1 position to the priority 2 position. Similarly, when the moving track is found, the next level of searching is performed until the position corresponding to the last priority, so that the entire track of the key is formed. If the key moved from the previous position is not found during the searching, it is returned that there is no key, which indicates that there is no key track for the function, and the function is not triggered. The detailed searching method is described in S103, and will not be repeated here.

[0116] In a specific application scenario, the vehicle key position change identification and feedback system is arranged in a body controller to implement the above method, and therefore, the body controller including the vehicle key position change identification and feedback system is also within the protection scope of the present application.

[0117] Similarly, a vehicle including the body controller is also within the protection scope of the present application.

[0118] The present application sets the priority list corresponding to different functions, and when the position of the key and / or the moving track of the key needs to be identified based on the above functions, the key is searched according to the order of the corresponding priority list only once or continuously, so that the purpose is quickly achieved. When a function based on the positioning of the key needs to be added in subsequent research and development, the priority list of the corresponding function is only required to be added to follow the method of the present application, without the need for additional searching logic.

[0119] It should be understood that the size of the serial number of each step in the above-mentioned embodiments does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0120] It should be understood that those of ordinary skill in the art can make improvements or changes according to the above description, and all these improvements and changes shall fall within the protection scope of the appended claims of the present application.

Claims

1. A vehicle key position change identification and feedback method, characterized in that: first priority list and second priority list are preset for dividing the priority of key area; the key area is a number of areas divided by a certain area inside and outside the vehicle, each key area has a corresponding antenna; the priority order in the first priority list is automatically updated and adjusted according to the purpose of the key search request and the specific working condition; the second priority list is divided into a number of second sub-tables according to the purpose of searching for the key, and the priority order of each second sub-table is set according to the purpose; when receiving the request for searching for the key position, the corresponding antenna is driven to search for the key in the order of high to low priority according to the first priority list; when the key signal is received, the search is immediately stopped, and the corresponding key area is the key position; when all key areas are searched and no key signal is received, it is judged that there is no key; when receiving the request for searching for the key movement state, first, the corresponding second sub-table is selected according to the purpose of the key search request in the request, and then the corresponding antenna is driven in the order of high to low priority according to the second sub-table to continuously search for whether there is a key and the information of the key, and the search results are compared to judge whether the key moves between the key areas and the moving track, which is the key movement state. Each of the key areas corresponds to only one antenna, the key area inside the vehicle corresponds to one antenna inside the vehicle, and the key area outside the vehicle corresponds to the nearest antenna outside the vehicle; the first priority list includes the key area inside the vehicle and the key area outside the vehicle; the second priority list only includes the key area outside the vehicle.

2. The vehicle key position change recognition and feedback method of claim 1, wherein: The search for the key position is as follows:

3. The vehicle key position change recognition and feedback method of claim 1, wherein: when receiving the request for searching for the key position, first, the antenna inside the vehicle is driven to search for the key to judge whether there is a key inside the vehicle, and the information of the key inside the vehicle is recorded; then, the key area with the highest priority in the first priority list is selected, if the selected current key area is outside the vehicle, the corresponding antenna is driven to search, when the key is searched and is not the key inside the vehicle, it is confirmed that the key position is in the key area with the highest priority, the search is stopped, and the key commonly used by the owner is updated in real time as the current key; if the selected current key area is outside the vehicle and no key is searched, or the searched key is the key inside the vehicle, the next priority key area in the first priority list is selected, and the corresponding antenna is driven to search; if the selected current key area is inside the vehicle and the key inside the vehicle is not 0, the feedback is directly made according to the recorded key inside the vehicle and the information; if the selected current key area is inside the vehicle and the information of the key inside the vehicle is empty, the next priority key area in the first priority list is selected, and the corresponding antenna is driven to search; if all priority key areas in the first priority list are not searched, it is returned that the key is invalid. ​ The driving corresponds to the antenna searches, specifically driving the corresponding antenna to send low-frequency signals; when receiving high-frequency signals with field strength greater than the field strength threshold, and the authentication is passed, it is judged that the key of the vehicle is searched.

4. The vehicle key position change recognition and feedback method of claim 1, wherein: When the purpose of the key search position request is to lock the vehicle, the priority order is updated through the door closing signal: the PE area corresponding to the last closed door each time is taken as the key area with the highest priority.

5. The vehicle key position change recognition and feedback method of claim 2, wherein: The second priority list includes two levels of priority; The search of the key movement state is as follows: When receiving the request for searching the key movement state, it is first judged whether there is a key in the vehicle, and the information of the key in the vehicle is recorded; Then, the first round of search is performed: the corresponding antenna is driven to search continuously whether there is a key according to the priority of the second priority list from high to low, and the information of the key is recorded; According to the key information searched by the two levels of priority, the key in the vehicle is excluded, it is judged whether the key moves from the key area with higher priority to the key area with lower priority, if yes, the movement trajectory of the key is returned, and if no, the searched key information is returned and the next round of search is performed; The next round of search is: the corresponding antenna is driven to search continuously whether there is a key according to the priority of the second priority list from high to low, and the information of the key is recorded, and the searched key information returned by the last round of search; according to the key information searched by the two levels of priority, and the searched key information returned by the last round of search, the key in the vehicle is excluded, it is judged whether the key moves from the key area with higher priority to the key area with lower priority, if yes, the movement trajectory of the key is returned, and if no, the searched key information is returned and the next round of search is continued.

6. The vehicle key position change recognition and feedback method of claim 5, wherein: The first round of search specifically includes: Selecting the key area with higher priority in the second priority list, driving the corresponding antenna to search, when the key of the vehicle is searched and does not belong to the key in the vehicle, recording the key information in the key area with higher priority, and continuing the current round of search; if the key of the vehicle is not searched, or all the searched keys of the vehicle are the keys in the vehicle, returning no key, ending the current round of search, and continuing the next round of search; The continuing of the current round of search is: selecting the key area with lower priority, driving the corresponding antenna to search, when the same key as the key area with higher priority is searched, it is judged that the key moves from the key area with higher priority to the key area with lower priority, the movement trajectory of the key is returned, and the search is ended; otherwise, the current search is ended, the key information in the key area with higher priority is returned, and the next round of search is continued.

7. The vehicle key position change recognition and feedback method of claim 5, wherein: The next round of search is specifically: The key area with higher priority in the second priority list is selected, and the corresponding antenna is driven to search, and when the vehicle key is searched and does not belong to the in-vehicle key, the vehicle key and the searched key information returned in the last round of searching are collected and used as the key information in the key area with higher priority, and the current round of searching is continued; if the vehicle key is not searched or all the searched vehicle keys are the in-vehicle keys, but there is key information in the key area in the last round of searching, only the searched key information returned in the last round of searching is used as the key information in the key area with higher priority, and the current round of searching is continued; if the vehicle key is not searched or all the searched vehicle keys are the in-vehicle keys, and there is no key information in the key area in the searched key information returned in the last round of searching, no key is returned, the current round of searching is ended, and the next round of searching is continued; The current round of searching is continued by selecting a key area with lower priority, driving the corresponding antenna to search, and when the same key as that in the key area with higher priority is searched, it is judged that the key moves from the key area with higher priority to the key area with lower priority, the moving track of the key is returned, and the searching is ended; otherwise, the current round of searching is ended, the key information in the key area with higher priority is returned, and the next round of searching is continued.

8. The vehicle key position change recognition and feedback method of claim 5, wherein: The driving of the corresponding antenna to search is specifically driving the corresponding antenna to emit a low-frequency signal and waiting for a certain time length, which is used to ensure that all key signals are received; the time length and the total number of keys are determined according to the setting when the key is bound.

9. The vehicle key position change recognition and feedback method according to claim 3 or 5, characterized by: The authentication is specifically that if the ESK code of the key end in the identified high-frequency signal is the same as the ESK code in the low-frequency signal, it is judged that the authentication is passed; otherwise, the authentication is not passed. The ESK code is learned when the key is bound.

10. A vehicle key position change recognition and feedback system, characterized by: The system is arranged in a body controller and includes: A storage unit, which is pre-provided with a first priority list and a second priority list for dividing the priority of the key area; the key area is a plurality of areas divided by a certain area in the vehicle and outside the vehicle, and each key area has a corresponding antenna; the priority order in the first priority list is automatically updated and adjusted according to the purpose of the key search position request and the specific working condition; the second priority list is divided into a plurality of second sub-tables according to the purpose of searching for the key, and the priority order of each second sub-table is set according to the purpose; A key search position module, which is used to drive the corresponding antenna to search for the key in the order from high to low priority of the first priority list when receiving the request for the key search position; when the key signal is received, the searching is immediately stopped, and the corresponding key area is the key position; when all the key areas are searched and no key signal is received, it is judged that there is no key. The key searching mobile state module is used to receive the request of the key searching mobile state, first select the corresponding second sub-table according to the purpose of the key searching mobile state contained in the request, then drive the corresponding antenna according to the order of the priority from high to low in the second sub-table, continuously search whether there is a key and the information of the key, and compare the search results each time to judge whether the key moves between the key areas and the moving track, that is, the key searching mobile state.

11. A body controller characterized by: The vehicle key position change identification and feedback system of claim 10.

12. A vehicle characterized by: The vehicle body controller of claim 11.

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