A method and apparatus for determining a vehicle unlock distance

Abstract

The application provides a method and device for determining the unlocking distance of a vehicle. When the vehicle is in a locked state and a first radio signal sent by a vehicle key is received, it is determined whether the vehicle key is a bound key of the vehicle. If the vehicle key is the bound key of the vehicle, the first distance between the vehicle key and the vehicle is calculated. When a second radio signal sent by the vehicle key is received, the second distance between the vehicle key and the vehicle is calculated. The difference between the second distance and the first distance is calculated, and the time difference between the emission time of the second radio signal and the emission time of the first radio signal is calculated. According to the ratio between the difference and the time difference, the moving speed of the vehicle key is obtained. Based on the moving speed and the configuration information of the vehicle, the unlocking distance of the vehicle at this time is determined. The unlocking distance of the vehicle is dynamically adjusted according to the moving speed of the vehicle key, which adapts to different needs of the user to get on the vehicle and improves the user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle control, and in particular to a method and device for determining a vehicle unlocking distance. BACKGROUND

[0002] With the progress and development of science and technology, vehicle keys have been improved from mechanical keys to intelligent induction unlocking. Currently, a vehicle controller locates a vehicle key through a vehicle-mounted low-frequency antenna, calculates the distance between the vehicle key and the vehicle, and actively unlocks the vehicle when the distance is less than a fixed distance.

[0003] However, the current vehicle unlocking method cannot meet the unlocking needs in different vehicle use scenarios. For example, when a user quickly approaches a vehicle with the vehicle key and has an urgent need to get into the vehicle, the vehicle unlocking speed is slow, which cannot meet the user's needs and causes a low user experience. SUMMARY

[0004] Therefore, embodiments of the present application provide a method and device for determining a vehicle unlocking distance to solve the problem that the unlocking needs in different vehicle use scenarios cannot be met and the user experience is low.

[0005] To achieve the above object, embodiments of the present application provide the following technical solutions.

[0006] A first aspect of the present application discloses a method for determining a vehicle unlocking distance, comprising:

[0007] When the vehicle is in a locked state and a first radio signal sent by a vehicle key is received, the first radio signal is analyzed to determine whether the vehicle key is a bound key of the vehicle;

[0008] If the vehicle key is the bound key of the vehicle, a first distance between the vehicle key and the vehicle is calculated;

[0009] When a second radio signal sent by the vehicle key is received, a second distance between the vehicle key and the vehicle at this time is calculated, wherein the emission time of the second radio signal is later than the emission time of the first radio signal;

[0010] The difference between the second distance and the first distance is calculated, and the time difference between the emission time of the second radio signal and the emission time of the first radio signal is calculated;

[0011] The ratio between the difference and the time difference is calculated to obtain the moving speed of the vehicle key;

[0012] Based on the moving speed and the configuration information of the vehicle, the unlocking distance of the vehicle at this time is determined.

[0013] It should be noted that the unlocking distance of the vehicle is determined according to the moving speed of the vehicle key, so that the vehicle is unlocked when the distance between the vehicle key and the vehicle is less than the unlocking distance, and the unlocking distance of the vehicle is flexibly determined according to the moving speed of the vehicle key, which better adapts to different vehicle use scenarios of the user, meets different unlocking needs of the user, and improves the experience of the user.

[0014] Preferably, the method further comprises:

[0015] When the vehicle is in a locked state, and it is detected that the distance between the vehicle key and the vehicle is less than the unlocking distance of the vehicle at this time, the vehicle is unlocked.

[0016] It should be noted that when the vehicle is in a locked state, the distance between the vehicle key and the vehicle is detected in real time, and when the distance is less than the current unlocking distance of the vehicle, the vehicle is unlocked, which improves the convenience of the user using the vehicle and improves the user experience.

[0017] Preferably, the method further comprises:

[0018] When the vehicle is in a locked state, and it is detected that the distance between the vehicle key and the vehicle is within a critical threshold range, the vehicle is unlocked; wherein the critical threshold range is determined according to the unlocking distance of the vehicle at this time;

[0019] If no operation of the user on the vehicle is detected within a preset time period after the vehicle is unlocked, the vehicle is locked;

[0020] It is judged whether the number of times of executing the step of, if no operation of the user on the vehicle is detected within a preset time period after the vehicle is unlocked, locking the vehicle, is not less than a preset value;

[0021] If the number of times is less than the preset value, return to execute the step of, when the vehicle is in a locked state, and it is detected that the distance between the vehicle key and the vehicle is within a critical threshold range, unlocking the vehicle;

[0022] If the number of times is not less than the preset value, adjust the unlocking distance of the vehicle at this time according to a preset adjustment value to obtain a new unlocking distance of the vehicle.

[0023] It should be noted that when the vehicle key is within the critical value of the unlocking distance of the vehicle, the vehicle will be repeatedly unlocked and locked, and after the vehicle is repeatedly unlocked and locked for a preset number of times, the unlocking distance of the vehicle is adjusted so that the vehicle key is outside the unlocking distance range of the vehicle, so as to avoid the situation that the vehicle is repeatedly unlocked and locked, and improve the safety of the vehicle.

[0024] Preferably, the unlocking distance of the vehicle at the moment is determined based on the moving speed and the configuration information of the vehicle, comprising:

[0025] An unlocking distance calculation constant is obtained according to the configuration information of the vehicle;

[0026] A product of the moving speed and the unlocking distance calculation constant is calculated;

[0027] The unlocking distance of the vehicle at the moment is determined according to the product.

[0028] It should be noted that the unlocking distance of the vehicle is determined according to the moving speed of the vehicle key and the configuration information of the vehicle. On the one hand, the unlocking distance of the vehicle is determined in combination with the unlocking demand of the user, and on the other hand, the unlocking distance of the vehicle is determined in combination with the performance configuration of the vehicle. The unlocking demand of the user is met, the user experience is improved, the configuration requirement of the vehicle is met, and the rationality and reliability of the unlocking distance of the vehicle are ensured.

[0029] Preferably, the unlocking distance of the vehicle at the moment is determined according to the product, comprising:

[0030] A preset minimum unlocking distance value is obtained;

[0031] It is judged whether the product is less than the preset minimum unlocking distance value;

[0032] If the product is less than the preset minimum unlocking distance value, the preset minimum unlocking distance value is determined as the unlocking distance of the vehicle at the moment;

[0033] If the product is not less than the preset minimum unlocking distance value, the product is determined as the unlocking distance of the vehicle at the moment.

[0034] It should be noted that since the product calculated according to the moving speed of the vehicle key and the unlocking distance calculation constant has the possibility of being infinitely small, the unlocking distance of the vehicle needs to be determined according to the preset minimum unlocking distance value, so that the vehicle can be normally unlocked.

[0035] The second aspect of the present application discloses a determination device of an unlocking distance of a vehicle, comprising:

[0036] An analysis unit is configured to analyze a first radio signal sent by a vehicle key when the vehicle is in a locked state and the first radio signal is received, and judge whether the vehicle key is a bound key of the vehicle;

[0037] A first calculation unit is configured to calculate a first distance between the vehicle key and the vehicle if the vehicle key is the bound key of the vehicle;

[0038] a second computing unit configured to calculate a second distance between the vehicle key and the vehicle when a second radio signal transmitted by the vehicle key is received, wherein the second radio signal is transmitted later than the first radio signal;

[0039] a third computing unit configured to calculate a difference between the second distance and the first distance, and calculate a time difference between the transmission time of the second radio signal and the transmission time of the first radio signal;

[0040] a fourth computing unit configured to calculate a ratio between the difference and the time difference to obtain a moving speed of the vehicle key;

[0041] a determining unit configured to determine a current unlocking distance of the vehicle based on the moving speed and configuration information of the vehicle.

[0042] Preferably, the apparatus further comprises:

[0043] a first unlocking unit configured to unlock the vehicle when the vehicle is in a locked state and the distance between the vehicle key and the vehicle is less than the current unlocking distance of the vehicle.

[0044] Preferably, the apparatus further comprises:

[0045] a second unlocking unit configured to unlock the vehicle when the vehicle is in a locked state and the distance between the vehicle key and the vehicle is within a critical threshold range, wherein the critical threshold range is determined according to the current unlocking distance of the vehicle.

[0046] a locking unit configured to lock the vehicle if no operation of the vehicle by a user is detected within a preset time period after the vehicle is unlocked;

[0047] a judging unit configured to judge whether the number of times of execution of the locking unit is not less than a preset value;

[0048] a returning unit configured to return to execute the second unlocking unit if the number of times is less than the preset value;

[0049] an adjusting unit configured to adjust the current unlocking distance of the vehicle according to a preset adjustment value to obtain a new unlocking distance of the vehicle if the number of times is not less than the preset value.

[0050] Preferably, the determining unit comprises:

[0051] an obtaining module configured to obtain an unlocking distance calculation constant according to the configuration information of the vehicle;

[0052] a calculating module configured to calculate a product between the moving speed and the unlocking distance calculation constant;

[0053] a determining module configured to determine the unlocking distance of the vehicle at the moment according to the product.

[0054] Preferably, the determining module comprises:

[0055] a first obtaining sub-module configured to obtain a preset minimum unlocking distance value;

[0056] a judging sub-module configured to judge whether the product is less than the preset minimum unlocking distance value;

[0057] a first determining sub-module configured to, if the product is less than the preset minimum unlocking distance value, determine the preset minimum unlocking distance value as the unlocking distance of the vehicle at the moment;

[0058] a second determining sub-module configured to, if the product is not less than the preset minimum unlocking distance value, determine the product as the unlocking distance of the vehicle at the moment.

[0059] According to the vehicle unlocking distance determination method and device provided by the embodiment of the present application, when the vehicle is in a locked state and a first radio signal sent by a vehicle key is received, it is judged whether the vehicle key is a bound key of the vehicle; if the vehicle key is the bound key of the vehicle, a first distance between the vehicle key and the vehicle is calculated; when a second radio signal sent by the vehicle key is received, a second distance between the vehicle key and the vehicle is calculated; a difference between the second distance and the first distance is calculated, and a time difference between a transmission time of the second radio signal and a transmission time of the first radio signal is calculated; a moving speed of the vehicle key is obtained according to a ratio between the difference and the time difference; and the unlocking distance of the vehicle at the moment is determined based on the moving speed and configuration information of the vehicle. The unlocking distance of the vehicle is dynamically adjusted according to the moving speed of the vehicle key, different user needs of getting into the vehicle are adapted, and user experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0060] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only belong to the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on the provided drawings.

[0061] Figure 1 A flowchart of a vehicle unlocking distance determination method provided by the embodiment of the present application;

[0062] Figure 2Another flow chart of a method for determining a vehicle unlocking distance according to an embodiment of the present application is provided.

[0063] Figure 3 A structure block diagram of a device for determining a vehicle unlocking distance according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0064] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0065] In the present application, the terms "comprising", "containing" or any other variants thereof are intended to cover the non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0066] As known from the background, the unlocking distance of the vehicle is a fixed value at present, and the vehicle is actively unlocked when the distance between the vehicle key and the vehicle is less than the fixed value. However, when the user quickly approaches the vehicle with the vehicle key and needs to quickly get on the vehicle, the vehicle needs to be quickly unlocked to meet the user's demand at this time, but the current vehicle unlocking method is slow, which cannot meet the user's demand, resulting in low user experience and other problems.

[0067] Therefore, the embodiments of the present application provide a method and device for determining a vehicle unlocking distance. When the vehicle is in a locked state and a first radio signal sent by a vehicle key is received, it is determined whether the vehicle key is a bound key of the vehicle. If the vehicle key is the bound key of the vehicle, a first distance between the vehicle key and the vehicle is calculated. When a second radio signal sent by the vehicle key is received, a second distance between the vehicle key and the vehicle is calculated. A difference between the second distance and the first distance is calculated, and a time difference between the transmission time of the second radio signal and the transmission time of the first radio signal is calculated. According to the ratio between the difference and the time difference, the moving speed of the vehicle key is obtained. Based on the moving speed and the configuration information of the vehicle, the unlocking distance of the vehicle at this time is determined. The unlocking distance of the vehicle is dynamically adjusted according to the moving speed of the vehicle key, which adapts to different user needs to get on the vehicle and improves the user experience.

[0068] Reference is made toFigure 1 FIG. 14 shows a flowchart of a method for determining a vehicle unlocking distance, according to an embodiment of the present application. The method is applied to a vehicle supporting a low-frequency antenna for positioning a distance between a vehicle key and the vehicle.

[0069] The method comprises the following steps:

[0070] Step S101: When the vehicle is in a locked state and a first radio signal sent by the vehicle key is received, the first radio signal is analyzed to determine whether the vehicle key is a bound key of the vehicle. If the vehicle key is the bound key of the vehicle, step S102 is performed. If the vehicle key is not the bound key of the vehicle, the flow ends.

[0071] In the implementation of step S101, when the vehicle is in the locked state, if the low-frequency antenna of the vehicle receives the first radio signal sent by the internal antenna of the vehicle key, the vehicle controller analyzes the first radio signal to determine whether the vehicle key is the bound key of the vehicle.

[0072] It can be understood that if the vehicle key is the bound key of the vehicle, step S102 is performed. If the vehicle key is not the bound key of the vehicle, the low-frequency antenna of the vehicle continues to receive the radio signal until the first radio signal sent by the bound key of the vehicle is received.

[0073] It should be noted that the low-frequency antenna of the vehicle periodically receives a wave band sent by an external device, for example, with a period of 0.5 s.

[0074] It can be understood that the specific way of analyzing the first radio signal to determine whether the vehicle key is the bound key of the vehicle usually depends on a security protocol or an encryption mechanism. These protocols and mechanisms ensure that only authorized keys can communicate with the vehicle, thereby preventing unauthorized personnel or devices from illegally accessing or starting the vehicle. Common security protocols or encryption mechanisms include, but are not limited to, fixed code encryption, rolling code encryption, and public key encryption.

[0075] Step S102: If the vehicle key is the bound key of the vehicle, a first distance between the vehicle key and the vehicle is calculated.

[0076] In the implementation of step S102, when the vehicle key is the bound key of the vehicle, the first distance L1 between the vehicle key and the vehicle is calculated by measuring the signal strength of the first radio signal.

[0077] It can be understood that the antenna in the vehicle key usually emits a radio frequency signal at a certain frequency, and the vehicle antenna receives this signal. Secondly, the vehicle controller uses a predetermined model or algorithm to estimate the distance between the vehicle and the key. A common model is based on a signal propagation model and a path loss model.

[0078] That is, the vehicle controller measures the strength of the received signal. In general, the strength of the signal is inversely proportional to the distance between the vehicle and the vehicle key: the closer the distance, the stronger the signal; the farther the distance, the weaker the signal.

[0079] Step S103: When receiving the second radio signal sent by the vehicle key, calculate the second distance between the vehicle key and the vehicle at this time.

[0080] Wherein, the transmission time of the second radio signal is later than the transmission time of the first radio signal.

[0081] In the process of implementing step S103, when receiving the second radio signal sent by the vehicle key, the second distance L2 between the vehicle key and the vehicle at this time is calculated according to the second radio signal. Wherein, the vehicle controller also uses a predetermined model or algorithm to estimate the second distance between the vehicle key and the vehicle at this time.

[0082] Step S104: Calculate the difference between the second distance and the first distance, and calculate the time difference between the transmission time of the second radio signal and the transmission time of the first radio signal.

[0083] In the process of implementing step S104, the difference value is obtained by subtracting the second distance L2 from the first distance L1; and the time difference t is obtained by subtracting the transmission time of the first radio signal from the transmission time of the second radio signal.

[0084] Step S105: Calculate the ratio between the difference value and the time difference to obtain the moving speed of the vehicle key.

[0085] In the process of implementing step S105, the ratio between the difference value and the time difference t is calculated, as shown in formula (1), to obtain the moving speed v of the vehicle key.

[0086] (L1-L2) / t=v(1)

[0087] Wherein, L1 is the first distance (m) between the vehicle key and the vehicle; L2 is the second distance (m) between the vehicle key and the vehicle; t is the time difference (S) between the transmission time of the second radio signal and the transmission time of the first radio signal; v is the moving speed (m / s) of the vehicle key.

[0088] Step S106: determining the unlocking distance of the vehicle at this time based on the moving speed and the configuration information of the vehicle.

[0089] In the process of implementing step S106, the unlocking distance calculation constant is obtained according to the configuration information of the vehicle; the product between the moving speed and the unlocking distance calculation constant is calculated, as shown in formula (2); and the unlocking distance of the vehicle at this time is determined according to the product.

[0090] v x c = L (2)

[0091] Wherein, v is the moving speed of the vehicle key (m / s); c is the unlocking distance calculation constant; L is the product between the moving speed and the unlocking distance calculation constant.

[0092] Specifically, the unlocking distance calculation constant c is pre-configured into the configuration information of the vehicle controller according to table 1, wherein table 1 is the unlocking distance calculation constant c value range table, and the unlocking distance calculation constant c is related to the form of the door handle of the vehicle and the type and size of the vehicle.

[0093] Table 1

[0094]

[0095] In specific application, the specific implementation process of determining the unlocking distance of the vehicle at this time according to the product L is as follows: obtaining a preset minimum unlocking distance value; and judging whether the product is less than the preset minimum unlocking distance value.

[0096] It should be noted that if the product is less than the preset minimum unlocking distance value, the preset minimum unlocking distance value is determined as the unlocking distance of the vehicle at this time; and if the product is not less than the preset minimum unlocking distance value, the product is determined as the unlocking distance of the vehicle at this time.

[0097] It should be particularly noted that the unlocking distance of the vehicle refers to the maximum distance that the vehicle key (such as a remote key, or also a smart phone or other equipment) can successfully unlock the vehicle door lock. The minimum unlocking distance value of the vehicle is because the product L calculated according to the moving speed of the vehicle key and the unlocking distance calculation constant has the possibility of being infinitely small, that is, it may be infinitely close to 0; when the product is infinitely small, the unlocking distance of the vehicle is directly determined according to the product, which may result in an infinitely small unlocking distance of the vehicle, therefore, the unlocking distance of the vehicle needs to be determined according to the preset minimum unlocking distance value to ensure that the vehicle can be normally unlocked.

[0098] For example, if the preset minimum unlocking distance value is 1.5 m, and the product L is less than the preset minimum unlocking distance value 1.5 m, then 1.5 m is determined as the unlocking distance of the vehicle at this time; and if the product L is not less than the preset minimum unlocking distance value 1.5 m, then the product L is determined as the unlocking distance of the vehicle at this time.

[0099] It can be understood that when the user quickly approaches the vehicle with the vehicle key, the unlocking distance of the vehicle at this time is larger than that when the user slowly approaches the vehicle with the vehicle key, that is, when the user quickly approaches the vehicle and wants to get in the vehicle in a hurry, the method provided in the embodiment of the application increases the unlocking distance to unlock the vehicle in advance, thereby meeting the user's demand for quickly getting in the vehicle.

[0100] When the user slowly approaches the vehicle, the method provided in the embodiment of the application reduces the unlocking distance, thereby meeting the user's demand for unlocking the vehicle in time and protecting the safety of the vehicle.

[0101] In some specific embodiments, when the vehicle is in a locked state and the distance between the vehicle key and the vehicle is detected to be less than the unlocking distance of the vehicle at this time, the vehicle is unlocked.

[0102] It should be particularly noted that when the low-frequency antenna detects that the position of the vehicle key is at a critical point between the unlocking of the vehicle and the locking of the vehicle, the vehicle may be repeatedly unlocked and locked, thereby causing a low user experience. At this time, the unlocking distance of the vehicle needs to be adjusted to avoid the repeated unlocking and locking.

[0103] Based on this, referring to the content shown in FIG. 8, the specific adjustment process is as follows: Figure 2

[0104] Step S201: When the vehicle is in a locked state and the distance between the vehicle key and the vehicle is detected to be within a critical threshold range, the vehicle is unlocked.

[0105] The critical threshold range is determined according to the unlocking distance of the vehicle at this time, for example, the unlocking distance of the vehicle at this time is 1.5 m, and the critical threshold range is [1.48 m-1.52 m].

[0106] In the process of specifically implementing step S201, when the vehicle is in a locked state, if the low-frequency antenna of the vehicle receives a radio signal sent by the vehicle key, the vehicle controller determines that the vehicle key is a bound key of the vehicle through the radio signal, and the distance between the vehicle key and the vehicle is within the critical threshold range, the vehicle controller unlocks the vehicle.

[0107] Step S202: If no operation of the user on the vehicle is detected within a preset time period after the vehicle is unlocked, the vehicle is locked.

[0108] In the process of specifically implementing step S202, after the vehicle controller unlocks the vehicle, no operation of the user on the vehicle (for example, opening the door of the vehicle) is detected within a preset time period (for example, 1 minute), and the vehicle controller locks the vehicle to ensure the safety of the vehicle. ​

[0109] Step S203: judging whether the number of times of executing step S202 is not less than a preset value; if the number of times is less than the preset value, returning to execute step S201; if the number of times is not less than the preset value, executing step S204.

[0110] In the process of implementing step S203, it is judged whether the number of times of executing the step of re-locking due to the user's long-time non-operation (i.e. step S202) is not less than a preset value (for example, 3 times); if the number of times is less than the preset value, returning to execute step S201; if the number of times is not less than the preset value (for example, 3 times), indicating that the vehicle controller has performed a plurality of unlocking and locking operations, in order to ensure the safety of the vehicle and improve the user's experience, the unlocking distance of the vehicle needs to be adjusted at this time, and step S204 is executed.

[0111] Step S204: adjusting the unlocking distance of the vehicle at this time according to a preset adjustment value, to obtain a new unlocking distance of the vehicle.

[0112] In the process of implementing step S204, the unlocking distance of the vehicle at this time is adjusted according to a preset adjustment value (for example, 1 m), to obtain a new unlocking distance of the vehicle.

[0113] It needs to be particularly pointed out that when the vehicle appears repeated unlocking and locking, the unlocking distance of the vehicle is not limited to the above-mentioned preset minimum unlocking distance value, and the unlocking distance of the vehicle can be further adjusted according to the actual situation.

[0114] For example, the unlocking distance of the vehicle at this time is 1.5 m, and according to the preset adjustment value 1 m, the unlocking distance of the vehicle is adjusted to 0.5 m, and therefore, the new unlocking distance of the vehicle is 0.5 m.

[0115] It can be understood that after the unlocking distance of the vehicle is adjusted to 0.5 m, the vehicle key is outside the unlocking range of the vehicle, and therefore, the situation of repeated unlocking and locking of the vehicle will not occur again.

[0116] In the embodiment of the application, the unlocking distance of the vehicle is dynamically adjusted according to the moving speed of the vehicle key and in combination with the unlocking distance calculation constant, and different user's needs of getting on the vehicle are flexibly met. Further, when the vehicle key is at the critical point of the unlocking of the vehicle, after the vehicle is repeatedly unlocked and locked for a preset number of times, it is determined that the user has no need to get on the vehicle for a short time, and therefore, the unlocking distance of the vehicle at this time is shortened, so as to improve the safety of the vehicle and the user's experience.

[0117] Corresponding to the above-mentioned method for determining the unlocking distance of the vehicle provided by the embodiment of the application, referring to Figure 3, a structure block diagram of a vehicle unlocking distance determination device is shown, the determination device comprises: an analysis unit 301, a first calculation unit 302, a second calculation unit 303, a third calculation unit 304, a fourth calculation unit 305 and a determination unit 306. The implementation principle of each unit is as follows:

[0118] The analysis unit 301 is used for analyzing the first radio signal when the vehicle is in the closed state and the first radio signal sent by the vehicle key is received, and judging whether the vehicle key is the bound key of the vehicle.

[0119] The first calculation unit 302 is used for calculating the first distance between the vehicle key and the vehicle if the vehicle key is the bound key of the vehicle.

[0120] The second calculation unit 303 is used for calculating the second distance between the vehicle key and the vehicle when the second radio signal sent by the vehicle key is received; wherein the emission time of the second radio signal is later than the emission time of the first radio signal.

[0121] The third calculation unit 304 is used for calculating the difference between the second distance and the first distance, and calculating the time difference between the emission time of the second radio signal and the emission time of the first radio signal.

[0122] The fourth calculation unit 305 is used for calculating the ratio between the difference and the time difference to obtain the moving speed of the vehicle key.

[0123] The determination unit 306 is used for determining the unlocking distance of the vehicle at this time based on the moving speed and the configuration information of the vehicle.

[0124] In the embodiment of the application, the unlocking distance of the vehicle is dynamically adjusted according to the moving speed of the vehicle key and the unlocking distance calculation constant, and different needs of the user for getting on the vehicle are flexibly met. Further, when the vehicle key is at the critical point of unlocking the vehicle, after the vehicle is repeatedly locked and unlocked for a preset number of times, it is determined that the user has no need to get on the vehicle for a short time, and then the unlocking distance of the vehicle at this time is shortened, so as to improve the safety of the vehicle and the experience of the user.

[0125] In combination with Figure 3 The determination device further comprises a first unlocking unit for unlocking the vehicle when the vehicle is in the closed state and the distance between the vehicle key and the vehicle is less than the unlocking distance of the vehicle at this time.

[0126] In combination with Figure 3 The determination device further comprises a second unlocking unit, a locking unit, a judging unit, a returning unit and an adjusting unit.

[0127] The second unlocking unit is used to unlock the vehicle when the vehicle is in a locked state and detects that the distance between the vehicle key and the vehicle is within a critical threshold range; wherein the critical threshold range is determined based on the unlocking distance of the vehicle at this time.

[0128] The locking unit is used to lock the vehicle if no user operation on the vehicle is detected within a preset time after the vehicle is unlocked.

[0129] The judging unit is used to judge whether the number of times the locking unit is executed is not less than a preset value.

[0130] The returning unit is used to return to execute the second unlocking unit if the number of times is less than a preset value.

[0131] The adjusting unit is used to adjust the unlocking distance of the vehicle at this time according to the preset adjustment value if the number of times is not less than the preset value, so as to obtain a new unlocking distance of the vehicle.

[0132] Combine Figure 3 The content shown, the determination unit 306 includes: an acquisition module, a calculation module and a determination module, and the implementation principle of each module is as follows:

[0133] The acquisition module is used to obtain the unlocking distance calculation constant based on the vehicle configuration information.

[0134] The calculation module is used to calculate the product between the moving speed and the unlocking distance calculation constant.

[0135] The determination module is used to determine the unlocking distance of the vehicle at this time according to the product.

[0136] Combine Figure 3 As shown in the content, the determination module includes: an acquisition submodule, a judgment submodule, a first determination submodule and a second determination submodule.

[0137] The acquisition submodule is used to obtain the preset minimum unlocking distance value.

[0138] The determination submodule is configured to determine whether the product is less than a preset minimum unlocking distance value. If the product is less than the preset minimum unlocking distance value, the first determination submodule is executed; if the product is not less than the preset minimum unlocking distance value, the second determination submodule is executed.

[0139] The first determining submodule is configured to determine the preset minimum unlocking distance value as the unlocking distance of the vehicle at this time if the product is less than the preset minimum unlocking distance value.

[0140] The second determining submodule is configured to determine the product as the unlocking distance of the vehicle at this time if the product is not less than a preset minimum unlocking distance value.

[0141] In summary, the application provides a vehicle unlocking distance determination method and device, which determines the unlocking distance of the vehicle based on the moving speed and configuration information of the vehicle. The unlocking distance of the vehicle is dynamically adjusted according to the moving speed of the vehicle key, which adapts to different user needs of getting into the vehicle and improves the user experience.

[0142] Each embodiment described in the specification is described in progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments. Especially, for the system or system embodiments, since it is basically similar to the method embodiments, it is described more simply, and the related parts can be referred to the part of the method embodiments. The above described system and system embodiments are only illustrative, and the units described as separate components can be or can not be physically separated, and the components displayed as units can be or can not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. According to the actual needs, part or all of the modules can be selected to achieve the purpose of the embodiment. Those skilled in the art can understand and implement without creative labor.

[0143] The skilled person can further realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized in electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of the examples have been described in general terms in the above description. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0144] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for determining a vehicle unlocking distance, characterized in that: The method comprises: When the vehicle is in a locked state and a first radio signal sent by a vehicle key is received, the first radio signal is analyzed to determine whether the vehicle key is a bound key for the vehicle; If the vehicle key is a bound key of the vehicle, calculating a first distance between the vehicle key and the vehicle; When receiving a second radio signal sent by the vehicle key, calculating a second distance between the vehicle key and the vehicle at this time; wherein the transmission time of the second radio signal is later than the transmission time of the first radio signal; calculating a difference between the second distance and the first distance, and calculating a time difference between a transmission time of the second radio signal and a transmission time of the first radio signal; calculating a ratio between the difference and the time difference to obtain a moving speed of the vehicle key; determining an unlocking distance of the vehicle at this time based on the moving speed and the configuration information of the vehicle; The determining of the unlocking distance of the vehicle at this time based on the moving speed and the configuration information of the vehicle includes: Obtaining an unlocking distance calculation constant based on the configuration information of the vehicle; wherein the unlocking distance calculation constant is related to the door handle form, the type and size of the vehicle; Calculating the product of the moving speed and the unlocking distance calculation constant; determining an unlocking distance of the vehicle at this time according to the product; Wherein, determining the unlocking distance of the vehicle at this time according to the product includes: Get the preset minimum unlocking distance value; Determining whether the product is less than the preset minimum unlocking distance value; If the product is less than the preset minimum unlocking distance value, determining the preset minimum unlocking distance value as the unlocking distance of the vehicle at this time; If the product is not less than the preset minimum unlocking distance value, the product is determined as the unlocking distance of the vehicle at this time.

2. The method according to claim 1, characterized in that The method further comprises: When the vehicle is in a locked state and it is detected that the distance between the vehicle key and the vehicle is less than the unlocking distance of the vehicle at this time, the vehicle is unlocked.

3. The method according to claim 1, characterized in that The method further comprises: When the vehicle is in a locked state and a distance between the vehicle key and the vehicle is detected to be within a critical threshold range, unlocking the vehicle; wherein the critical threshold range is determined based on the unlocking distance of the vehicle at that time; If no user operation on the vehicle is detected within a preset time after the vehicle is unlocked, the vehicle is locked; determining whether the number of times the step of locking the vehicle if no user operation on the vehicle is detected within a preset time period after the vehicle is unlocked is not less than a preset value; If the number of times is less than the preset value, returning to the step of unlocking the vehicle when the vehicle is in a locked state and the distance between the vehicle key and the vehicle is detected to be within a critical threshold range; If the number of times is not less than the preset value, the unlocking distance of the vehicle at this time is adjusted according to the preset adjustment value to obtain a new unlocking distance of the vehicle.

4. A device for determining a vehicle unlocking distance, characterized in that: The device comprises: a parsing unit, configured to, when the vehicle is in a locked state and receives a first radio signal sent by a vehicle key, parse the first radio signal to determine whether the vehicle key is a bound key for the vehicle; a first calculating unit, configured to calculate a first distance between the vehicle key and the vehicle if the vehicle key is a bound key of the vehicle; a second calculating unit, configured to calculate a second distance between the vehicle key and the vehicle at this time when receiving a second radio signal sent by the vehicle key; wherein a transmission time of the second radio signal is later than a transmission time of the first radio signal; a third calculating unit, configured to calculate a difference between the second distance and the first distance, and to calculate a time difference between a transmission time of the second radio signal and a transmission time of the first radio signal; a fourth calculating unit, configured to calculate a ratio between the difference and the time difference to obtain a moving speed of the vehicle key; a determining unit, configured to determine an unlocking distance of the vehicle at this moment based on the moving speed and the configuration information of the vehicle; Wherein, the determining unit includes: an acquisition module, configured to acquire an unlocking distance calculation constant based on the configuration information of the vehicle; wherein the unlocking distance calculation constant is related to the door handle form, the type and size of the vehicle; a calculation module, configured to calculate the product of the moving speed and the unlocking distance calculation constant; a determination module, configured to determine an unlocking distance of the vehicle at this moment according to the product; Wherein, the determining module includes: The acquisition submodule is used to obtain the preset minimum unlocking distance value; A judging submodule, configured to judge whether the product is less than the preset minimum unlocking distance value; a first determining submodule, configured to determine the preset minimum unlocking distance value as the unlocking distance of the vehicle at this time if the product is less than the preset minimum unlocking distance value; The second determining submodule is configured to determine the product as the unlocking distance of the vehicle at this time if the product is not less than the preset minimum unlocking distance value.

5. The device according to claim 4, characterized in that The device further comprises: The first unlocking unit is configured to unlock the vehicle when the vehicle is in a locked state and detects that the distance between the vehicle key and the vehicle is less than an unlocking distance of the vehicle at that time.

6. The device according to claim 4, characterized in that The device further comprises: a second unlocking unit, configured to unlock the vehicle when the vehicle is in a locked state and detects that the distance between the vehicle key and the vehicle is within a critical threshold range; wherein the critical threshold range is determined based on the unlocking distance of the vehicle at that time; a locking unit, configured to lock the vehicle if no user operation on the vehicle is detected within a preset time period after the vehicle is unlocked; A judging unit, configured to judge whether the number of times the locking unit is executed is not less than a preset value; a returning unit, configured to return to executing the second unlocking unit if the number of times is less than a preset value; The adjusting unit is configured to adjust the unlocking distance of the vehicle at this time according to the preset adjustment value if the number of times is not less than a preset value, so as to obtain a new unlocking distance of the vehicle.

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