Calibration parameter adjustment method for bluetooth non-inductive unlocking, vehicle unlocking method and device

Abstract

The application relates to the technical field of vehicle unlocking, in particular to a Bluetooth non-inductive unlocking calibration parameter adjustment method, a vehicle unlocking method and device. The adjustment method comprises the following steps: obtaining historical unlocking data at multiple historical moments, wherein the historical unlocking data comprises corresponding historical unlocking time length and historical unlocking distance, the historical unlocking time length is the time length used by a user from non-inductive unlocking of a vehicle to opening a vehicle door, and the historical unlocking distance is the distance from a mobile terminal to the vehicle when the vehicle is non-inductively unlocked; calculating the probability distribution of the multiple historical unlocking data in multiple preset unlocking data intervals, each unlocking data interval comprises corresponding unlocking time length and unlocking distance intervals; and adjusting the local unlocking distance calibration value and the RSSI calibration value according to the probability distribution, so as to unlock or lock the vehicle according to the adjusted unlocking distance calibration value and the RSSI calibration value. The method can adapt to different unlocking scenes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle unlocking, in particular to a calibration parameter adjustment method for Bluetooth non-inductive unlocking, and a vehicle unlocking method and device. BACKGROUND

[0002] Bluetooth non-inductive unlocking has become the current mainstream vehicle unlocking configuration method. The unlocking method is that the vehicle end establishes a communication connection with the mobile terminal through Bluetooth, listens to the Received Signal Strength Indication (RSSI) value of the mobile terminal received through the Bluetooth antenna, calculates the distance from the mobile terminal to the vehicle according to the RSSI value, and then judges whether the unlocking condition is met according to the distance from the mobile terminal to the vehicle.

[0003] The RSSI value is affected by the location or environment of the mobile terminal. For example, in the case of the same location, the RSSI values corresponding to the user normally holding the mobile terminal and the mobile terminal placed in the bag are different. For another example, in the case of the same distance from the mobile terminal to the vehicle end, the RSSI values corresponding to the environment of the garage, the open air, and the presence of a wall and other obstructions are also different.

[0004] However, the existing Bluetooth non-inductive unlocking adopts a fixed set of calibration parameters as the vehicle unlocking condition, without considering the RSSI value differentiation brought by different scenarios, which is difficult to adapt to different vehicle unlocking scenarios, resulting in poor user experience. SUMMARY

[0005] Therefore, a calibration parameter adjustment method for Bluetooth non-inductive unlocking, and a vehicle unlocking method and device are provided to adapt to different unlocking scenarios and improve user experience.

[0006] In a first aspect, a calibration parameter adjustment method for Bluetooth non-inductive unlocking is provided, which is applied to a vehicle end that establishes a communication connection with a mobile terminal through Bluetooth. The method comprises:

[0007] obtaining historical unlocking data at multiple historical moments, the historical unlocking data comprising mutually corresponding historical unlocking time and historical unlocking distance, the historical unlocking time being the time taken from non-inductive unlocking of the vehicle to opening of the vehicle door by the user, and the historical unlocking distance being the distance from the mobile terminal to the vehicle at the time of non-inductive unlocking of the vehicle;

[0008] taking the historical unlocking data at each of the historical moments as a unit, calculating the probability distribution of the historical unlocking data at the multiple historical moments in a plurality of preset unlocking data intervals, each of the unlocking data intervals comprising mutually corresponding unlocking time interval and unlocking distance interval;

[0009] adjust the local unlocking distance calibration value and the RSSI calibration value according to the probability distribution, and unlock or lock the vehicle according to the adjusted unlocking distance calibration value and the RSSI calibration value.

[0010] With reference to the first aspect, in a first implementation form of the first aspect, adjusting the local unlocking distance calibration value and the RSSI calibration value according to the probability distribution comprises:

[0011] obtaining a preset unlocking data reference value, the unlocking data reference value comprising a corresponding unlocking duration reference value and an unlocking distance reference value, the unlocking distance reference value being a reference distance from the mobile terminal to the vehicle when the vehicle is unlocked without sensing, and the unlocking duration reference value being a reference duration for a user to open a door of the vehicle from a position at the unlocking distance reference value to the vehicle;

[0012] adjusting the unlocking distance calibration value and the RSSI calibration value according to the probability of the historical unlocking data being below the unlocking data reference value and the probability of the historical unlocking data being above the unlocking data reference value.

[0013] With reference to the first implementation form of the first aspect, in a second implementation form of the first aspect, adjusting the unlocking distance calibration value and the RSSI calibration value according to the probability of the historical unlocking data being below the unlocking data reference value and the probability of the historical unlocking data being above the unlocking data reference value comprises:

[0014] determining an unlocking data reference interval in the plurality of unlocking data intervals, the unlocking data reference interval comprising an unlocking distance interval in which the unlocking distance reference value is located and an unlocking duration interval in which the unlocking duration reference value is located;

[0015] if the probability distribution is that the probability of the historical unlocking data being below the unlocking data reference interval is higher than the probability of the historical unlocking data being above the unlocking data reference interval, the unlocking distance calibration value is increased and the RSSI calibration value is decreased;

[0016] if the probability distribution is that the probability of the historical unlocking data being above the unlocking data reference interval is higher than the probability of the historical unlocking data being below the unlocking data reference interval, the unlocking distance calibration value is decreased and the RSSI calibration value is increased.

[0017] In a third implementation form of the first aspect, in the second implementation form of the first aspect, if the probability distribution condition is that the probability of the historical unlocking data being distributed below the unlocking data reference interval is greater than the probability of the historical unlocking data being distributed above the unlocking data reference interval, the unlocking distance calibration value is adjusted upward and the RSSI calibration value is adjusted downward, including:

[0018] If the probability distribution condition is that the probability of the historical unlocking data being distributed below the unlocking data reference interval is the greatest and exceeds a preset probability, the unlocking distance calibration value is adjusted upward by a first preset distance, and the RSSI calibration value is adjusted downward by a first preset RSSI value.

[0019] If the probability distribution condition is that the probability of the historical unlocking data being distributed below the unlocking data reference interval is the greatest and does not exceed the preset probability, and the probability of the historical unlocking data being distributed in the unlocking data reference interval is greater than the probability of the historical unlocking data being distributed above the unlocking data reference interval, the unlocking distance calibration value is adjusted upward by a second preset distance, and the RSSI calibration value is adjusted downward by a second preset RSSI value.

[0020] If the probability distribution condition is that the probability of the historical unlocking data being distributed in the unlocking data reference interval is the greatest and does not exceed the preset probability, and the probability of the historical unlocking data being distributed below the unlocking data reference interval is greater than the probability of the historical unlocking data being distributed above the unlocking data reference interval, the unlocking distance calibration value is adjusted upward by a third preset distance, and the RSSI calibration value is adjusted downward by a third preset RSSI value.

[0021] The first preset distance, the second preset distance and the third preset distance decrease in turn, and the first preset RSSI value, the second preset RSSI value and the third preset RSSI value decrease in turn.

[0022] In a fourth implementation form of the first aspect, in the third implementation form of the first aspect, if the probability distribution condition is that the probability of the historical unlocking data being distributed above the unlocking data reference interval is greater than the probability of the historical unlocking data being distributed below the unlocking data reference interval, the unlocking distance calibration value is adjusted downward and the RSSI calibration value is adjusted upward, including:

[0023] if the probability distribution condition is that the probability of the historical unlocking data being distributed above the unlocking data reference interval is the largest and exceeds the preset probability, and the probability of the historical unlocking data being distributed in the unlocking data reference interval exceeds the probability of the historical unlocking data being distributed below the unlocking data reference interval, then the unlocking distance calibration value is adjusted downward by the first preset distance, and the RSSI calibration value is adjusted upward by the first preset RSSI value.

[0024] if the probability distribution condition is that the probability of the historical unlocking data being distributed above the unlocking data reference interval is the largest and exceeds the preset probability, and the probability of the historical unlocking data being distributed in the unlocking data reference interval exceeds the probability of the historical unlocking data being distributed below the unlocking data reference interval, then the unlocking distance calibration value is adjusted downward by the first preset distance, and the RSSI calibration value is adjusted upward by the first preset RSSI value.

[0025] if the probability distribution condition is that the probability of the historical unlocking data being distributed above the unlocking data reference interval is the largest and exceeds the preset probability, and the probability of the historical unlocking data being distributed in the unlocking data reference interval exceeds the probability of the historical unlocking data being distributed below the unlocking data reference interval, then the unlocking distance calibration value is adjusted downward by the first preset distance, and the RSSI calibration value is adjusted upward by the first preset RSSI value.

[0026] In combination with the first aspect, in a fifth implementation manner of the first aspect, the historical unlocking distance at each of the historical time points is obtained by:

[0027] a preset adult walking speed and a preset door opening duration are obtained.

[0028] the historical unlocking distance at each of the historical time points is obtained by subtracting the door opening duration from the historical unlocking duration at each of the historical time points and multiplying the result by the adult walking speed.

[0029] In combination with the fifth implementation manner of the first aspect, in a sixth implementation manner of the first aspect, after the historical unlocking data at the historical time points is obtained, the method further includes:

[0030] a preset maximum unlocking duration is obtained.

[0031] whether the historical unlocking duration at each of the historical time points is greater than the maximum unlocking duration is determined.

[0032] in the historical unlocking data at the historical time points, the historical unlocking duration greater than the maximum unlocking duration and the corresponding historical unlocking distance are filtered out.

[0033] In a second aspect, a vehicle unlocking method is provided, which is applied to a vehicle end and establishes a communication connection with a mobile terminal through Bluetooth, and includes:

[0034] monitor a current RSSI value of the mobile terminal;

[0035] obtain an adjusted unlocking distance calibration value and an RSSI calibration value, which are obtained by the calibration parameter adjustment method of the Bluetooth non-inductive unlocking according to any one of the first aspect or the first to sixth implementable manners of the first aspect;

[0036] If the current RSSI value gradually increases, when the current RSSI value is greater than or equal to the adjusted RSSI value, calculate the current distance from the mobile terminal to the vehicle according to the current RSSI value; when the current distance is less than or equal to the adjusted unlocking distance calibration value, unlock the vehicle;

[0037] If the current RSSI value gradually decreases, when the current RSSI value is less than or equal to the adjusted RSSI value, calculate the current distance from the mobile terminal to the vehicle according to the current RSSI value; when the current distance is greater than or equal to the adjusted unlocking distance calibration value, lock the vehicle.

[0038] In a third aspect, a calibration parameter adjustment device for Bluetooth non-inductive unlocking is provided, which is applied to a vehicle end, the vehicle end establishes a communication connection with a mobile terminal through Bluetooth, and the device comprises:

[0039] a historical data acquisition module, configured to acquire historical unlocking data at multiple historical moments, the historical unlocking data comprising corresponding historical unlocking time length and historical unlocking distance, the historical unlocking time length being the time length from non-inductive unlocking of a vehicle to opening of a door by a user, and the historical unlocking distance being the distance between the mobile terminal and the vehicle when the vehicle is non-inductively unlocked;

[0040] a historical data statistical module, configured to calculate, as a unit of the historical unlocking data at each of the historical moments, the probability distribution of the historical unlocking data at the multiple historical moments in a plurality of preset unlocking data intervals, each of the unlocking data intervals comprising corresponding unlocking time length interval and unlocking distance interval;

[0041] a calibration parameter adjustment module, configured to adjust a local unlocking distance calibration value and an RSSI calibration value according to the probability distribution, so as to unlock or lock the vehicle according to the adjusted unlocking distance calibration value and the RSSI calibration value.

[0042] In a fourth aspect, a vehicle unlocking device is provided, which is applied to a vehicle end, the vehicle end establishes a communication connection with a mobile terminal through Bluetooth, and the device comprises:

[0043] an RSSI monitoring module, configured to monitor a current RSSI value of the mobile terminal;

[0044] obtained by the calibration parameter adjustment method of the Bluetooth non-inductive unlocking according to the first aspect or any one of the first to sixth implementable manners of the first aspect; and

[0045] the non-inductive unlocking module is further configured to, if the current RSSI value gradually decreases, calculate the current distance from the mobile terminal to the vehicle according to the current RSSI value when the current RSSI value is less than or equal to the adjusted RSSI value; and lock the vehicle when the current distance is greater than or equal to the adjusted unlocking distance calibration value.

[0046] the non-inductive unlocking module is further configured to, if the current RSSI value gradually decreases, calculate the current distance from the mobile terminal to the vehicle according to the current RSSI value when the current RSSI value is less than or equal to the adjusted RSSI value; and lock the vehicle when the current distance is greater than or equal to the adjusted unlocking distance calibration value.

[0047] The calibration parameter adjustment method of the Bluetooth non-inductive unlocking, the vehicle unlocking method and the device, the calibration parameter adjustment method is applied to the vehicle end, the vehicle end and the mobile terminal establish a communication connection through Bluetooth, and the method comprises the following steps: obtaining historical unlocking data at multiple historical moments, each historical unlocking data comprising corresponding historical unlocking time and historical unlocking distance, the historical unlocking time being the time length from non-inductive unlocking of the vehicle to opening of the vehicle door by the user, and the historical unlocking distance being the distance from the mobile terminal to the vehicle when the vehicle is non-inductively unlocked; taking the historical unlocking data at each historical moment as a unit, calculating the probability distribution of the historical unlocking data at the multiple historical moments in a plurality of preset unlocking data intervals, each unlocking data interval comprising corresponding unlocking distance and unlocking time length intervals; and adjusting the unlocking distance calibration value and the RSSI calibration value according to the probability distribution. It can be seen that the calibration parameter adjustment method of the present application can adjust the local calibration parameters according to the historical unlocking data of the vehicle non-inductive unlocking in the past period of time, and compared with the prior art, the calibration parameter adjustment method considers the RSSI value differentiation caused by different scenarios, uses the adjusted calibration parameters to unlock and lock the vehicle, and can better adapt to different unlocking and locking scenarios and improve the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 It is an application environment diagram of the calibration parameter adjustment method of the Bluetooth non-inductive unlocking in one embodiment;

[0049] Figure 2 It is a flowchart of the calibration parameter adjustment method of the Bluetooth non-inductive unlocking in one embodiment;

[0050] Figure 3 Flowchart of a vehicle unlocking method in an embodiment;

[0051] Figure 4 Structure block diagram of calibration parameter adjustment of Bluetooth non-inductive unlocking in an embodiment;

[0052] Figure 5 Structure block diagram of a vehicle unlocking device in an embodiment. DETAILED DESCRIPTION

[0053] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0054] It should be noted that the diagrams provided in the embodiments only schematically illustrate the basic concepts of the present application, and only the components related to the present application are shown in the diagrams, not the number, shape and size of the components when actually implemented. The shapes, number and proportions of the components when actually implemented can be arbitrarily changed, and the layout pattern of the components can also be more complex.

[0055] The structures, proportions, sizes, etc. shown in the diagrams attached to the present specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the conditions that can be implemented by the present application. Therefore, any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects that can be produced by the present application and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present application.

[0056] The orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right", "intermediate", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc. in the present specification are based on the orientations or positional relationships shown in the drawings, and are only used to simplify the description, and cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation. Therefore, it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used for description purposes, and cannot be understood as indicating or implying relative importance.

[0057] Since the current Bluetooth non-inductive unlocking only has a fixed set of calibration parameters for vehicle unlocking and closing, but the RSSI value of the mobile terminal monitored by the vehicle end is affected by the location, environment and use state of the mobile terminal, and differences are generated. For example, the corresponding RSSI values are different when the user normally holds the mobile terminal and the mobile terminal is placed in the bag at the same location; for example, when the distance between the mobile terminal and the vehicle end is the same, the corresponding RSSI values are different when the environment is a garage, open air and there are obstacles such as walls; for example, the corresponding RSSI values may also be different when the user makes and receives calls and sends messages with the mobile terminal at the same location. Therefore, the calibration parameters of the existing Bluetooth non-inductive unlocking do not consider the RSSI value differentiation brought by different scenarios, and it is difficult to adapt to different vehicle unlocking scenarios, resulting in poor user experience.

[0058] To this end, the present application provides a Bluetooth non-inductive unlocking calibration parameter adjustment method, which can be applied to the vehicle end 106 in the application environment as shown in Figure 1 . Among them, the cloud end 102 communicates with the mobile terminal 104 through the network, the mobile terminal 104 and the vehicle end 106 are paired through Bluetooth and establish a communication connection after successful pairing, and the mobile terminal 104 can be but not limited to various smart phones, personal computers, notebook computers, tablet computers and portable wearable devices. After the manufacturer completes the parameter calibration of the Bluetooth non-inductive unlocking of a certain vehicle model, the calibration parameters are uploaded to the cloud end 102 for storage; when the user opens the non-inductive Bluetooth key of the vehicle model through the mobile terminal 104, the cloud end 102 downloads the calibration parameters to the user's mobile terminal 104; when the user successfully pairs the mobile terminal 104 and the vehicle end 106 through Bluetooth for the first time, the mobile terminal 104 transmits the calibration parameters to the vehicle end 106. After the vehicle is used for a period of time, the vehicle end 106 obtains the historical unlocking data of the vehicle non-inductive unlocking in the past period of time and counts its probability distribution, and adjusts the local calibration parameters according to the probability distribution. Compared with the prior art, the present application considers the RSSI value differentiation brought by different scenarios, uses the adjusted calibration parameters for vehicle unlocking and closing, can better adapt to different unlocking and closing scenarios, and improves the user experience.

[0059] Next, the Bluetooth non-inductive unlocking calibration parameter adjustment method of the present application will be described in detail through the following embodiments.

[0060] In one embodiment, as shown in Figure 2 , a Bluetooth non-inductive unlocking calibration parameter adjustment method is provided, which is applied to the vehicle end 106 in Figure 1 . The vehicle end and the mobile terminal establish a communication connection through Bluetooth, and the method comprises the following steps:

[0061] At step 202, historical unlocking data at multiple historical time points is acquired, the historical unlocking data including corresponding historical unlocking time length and historical unlocking distance, the historical unlocking time length being a time length from vehicle passive unlocking to a time when a user opens a vehicle door, and the historical unlocking distance being a distance from the mobile terminal to the vehicle at the time of vehicle passive unlocking.

[0062] It should be noted that before the steps of the calibration parameter adjustment method of the present application are performed, the manufacturer uploads the calibration parameters to the cloud for storage after completing the parameter calibration of the Bluetooth passive unlocking of a certain vehicle model, the calibration parameters including an unlocking distance calibration value and an RSSI calibration value; the user can download and install the application software specified by the manufacturer on the mobile terminal, create an account and log in to the account to set and bind the vehicle information; when the user opens the passive Bluetooth key of the vehicle model through the mobile terminal, the cloud sends the calibration parameters to the mobile terminal of the user through the network; when the user successfully pairs the mobile terminal with the vehicle end through Bluetooth for the first time, the mobile terminal transmits the calibration parameters to the vehicle end.

[0063] Thereafter, the user can use the passive Bluetooth key to realize the passive unlocking and passive locking of the vehicle, when the user continuously approaches the vehicle with the mobile terminal, the vehicle will automatically sense and start the unlocking process until the vehicle is automatically unlocked when the unlocking condition is met, when the user continuously moves away from the vehicle with the mobile terminal, the vehicle will automatically sense and start the locking process until the vehicle is automatically locked when the unlocking condition is not met. The Bluetooth passive unlocking realizes unlocking and locking of the vehicle without a physical key, without the user actively initiating an unlocking instruction and a locking instruction, reducing the user's operation and greatly improving the convenience.

[0064] In addition, before the steps of the calibration parameter adjustment method of the present application are performed, the vehicle end records the time of vehicle passive unlocking, i.e. the time when the vehicle end judges that the RSSI value of the mobile terminal and the distance from the mobile terminal to the vehicle meet the calibrated RSSI calibration value and unlocking distance calibration value, when the user opens the vehicle door; the vehicle end also records the time when the vehicle door is opened; the vehicle end calculates the time length from the time of vehicle passive unlocking to the time when the vehicle door is opened to obtain the unlocking time length; the vehicle end further acquires a preset adult walking speed and a vehicle door opening time length, and obtains the unlocking distance by multiplying the unlocking time length minus the preset vehicle door opening time length by the preset adult walking speed.

[0065] In each vehicle passive unlocking, the historical unlocking data at each historical time point, i.e. the corresponding historical unlocking time length and historical unlocking distance, can be recorded according to the above steps; the historical unlocking data at each historical time point is stored in the memory, and to prevent data loss, the historical unlocking data at each historical time point can also be uploaded to the mobile terminal and the cloud for synchronous storage.

[0066] In some embodiments, optionally, in order to reduce the memory space occupied by the historical unlocking data, and in order for the subsequent steps to obtain the historical unlocking data of multiple historical time points closest to the current time point, the number of stored historical unlocking data is set, and when the number of historical unlocking data in the memory exceeds the set number, the corresponding historical unlocking data is deleted in chronological order from the historical time point latest to the current time point until the number of historical unlocking data after deletion is reduced to the set number.

[0067] When the calibration parameter adjustment method of the present application is applied, the vehicle end obtains historical unlocking data at multiple historical time points from the memory. The number of historical unlocking data to be obtained can be set in advance, for example, set to 30. In some embodiments, optionally, if the number of historical unlocking data stored in the memory exceeds the number of historical unlocking data to be obtained, the corresponding historical unlocking data is obtained in chronological order from the historical time point closest to the current time point until the number of obtained historical unlocking data reaches the set number.

[0068] In the process of approaching the vehicle unlocking, the user may cause the recorded historical unlocking time to be too long due to the user's subjective factors, such as staying on the way or the user staying near the vehicle for a short time. This type of data is not caused by the mobile terminal being affected by the location, environment or use state, so this type of data is considered as illegal data.

[0069] In order not to affect the adjustment of the calibration parameter by the illegal data, after obtaining the historical unlocking data at the multiple historical time points, the following steps are used to filter out this type of data: obtaining a preset maximum unlocking time; judging whether the historical unlocking time at each of the historical time points is greater than the maximum unlocking time; and filtering out the historical unlocking time greater than the maximum unlocking time and the corresponding historical unlocking distance among the historical unlocking data at the multiple historical time points. For example, the maximum unlocking time is set to 8 seconds.

[0070] After the illegal data is filtered out, the number of historical unlocking data is reduced and is less than the preset number, so, optionally, after the illegal data is filtered out, the vehicle end obtains historical unlocking data that is not illegal and closest to the current time point in chronological order from the memory, and the number of historical unlocking data obtained again is subject to the preset number.

[0071] In some embodiments, in order to reduce the occupation of illegal data on the memory space, and in order to improve the convenience of using the historical unlocking data at each historical moment, the vehicle end obtains a preset maximum unlocking duration after recording the historical unlocking data at each historical moment, judges whether the historical unlocking duration at each historical moment is greater than the maximum unlocking duration, and filters out the historical unlocking duration greater than the maximum unlocking duration and the corresponding historical unlocking distance.

[0072] Step 204, as a unit of the historical unlocking data at each historical moment, the probability distribution of the historical unlocking data at the plurality of historical moments in the plurality of preset unlocking data intervals is calculated, and each unlocking data interval includes a corresponding unlocking duration interval and an unlocking distance interval.

[0073] Since the historical unlocking duration at each historical moment is closely related to the historical unlocking distance, generally speaking, if the historical unlocking duration is short, the corresponding historical unlocking distance is also short, and conversely, if the historical unlocking duration is long, the corresponding historical unlocking distance is also long. To some extent, after filtering out the illegal data, the historical unlocking duration at each historical moment and the corresponding historical unlocking distance form a certain linear ratio.

[0074] Therefore, as a unit of the historical unlocking data at each historical moment, the probability distribution of the historical unlocking data at the plurality of historical moments is counted. Specifically, counting the probability distribution can include the following steps: obtaining a plurality of preset unlocking data intervals, each unlocking data interval including a corresponding unlocking distance interval and an unlocking duration interval; arranging the plurality of unlocking distance intervals and the plurality of unlocking duration intervals in order from small to large; dividing the historical unlocking data at the plurality of historical moments into corresponding unlocking data intervals, and calculating the proportion of the historical unlocking data in each unlocking data interval in all historical unlocking data, i.e. the probability distribution of the plurality of historical unlocking data in the plurality of unlocking data intervals. Generally, the number of preset unlocking data intervals is at least three, and for example, there are four preset unlocking data intervals.

[0075] Step 206, according to the probability distribution, adjusting the local unlocking distance calibration value and the RSSI calibration value, and according to the adjusted unlocking distance calibration value and the RSSI calibration value, unlocking or locking the vehicle.

[0076] Among them, the unlocking distance calibration value and the RSSI calibration value of the vehicle end are the initial calibration parameters obtained by the mobile terminal after the first successful pairing of the mobile terminal and the vehicle end through Bluetooth.

[0077] Since the unlocking distance calibration value and the RSSI calibration value are calibrated by the manufacturer considering the general unlocking scenarios, etc., through real vehicle calibration, a time length that a normal adult takes to open the door from a place at the unlocking distance calibration value from the vehicle at a normal walking speed can be obtained, which is referred to as an unlocking time length threshold.

[0078] Therefore, the application presets a set of unlocking data reference values at a relatively moderate level, and the vehicle end evaluates the probability distribution of the historical unlocking data at each historical moment through the unlocking data reference values, and then adjusts the unlocking distance calibration value and the RSSI calibration value according to the probability distribution.

[0079] Specifically, the vehicle end adjusts the local unlocking distance calibration value and the RSSI calibration value according to the probability distribution, including the following steps: obtaining a preset unlocking data reference value, the unlocking data reference value including a corresponding unlocking time length reference value and an unlocking distance reference value, the unlocking distance reference value being a reference distance from the mobile terminal to the vehicle when the vehicle is unlocked without sensing, and the unlocking time length reference value being a reference time length that a user takes to open the door from a place at the unlocking distance reference value from the vehicle; adjusting the unlocking distance calibration value and the RSSI calibration value according to the probability that the historical unlocking data is below the unlocking data reference value and the probability that the historical unlocking data is above the unlocking data reference value.

[0080] Further, if the probability that the historical unlocking data is below the unlocking data reference value exceeds the probability that the historical unlocking data is above the unlocking data reference value, it indicates that the mobile terminal needs to be very close to the vehicle to successfully unlock the vehicle in the past period of time, and therefore the unlocking distance calibration value needs to be adjusted upward and the RSSI calibration value needs to be adjusted downward; if the probability that the historical unlocking data is above the unlocking data reference value exceeds the probability that the historical unlocking data is below the unlocking data reference value, it indicates that the mobile terminal does not need to be very close to the vehicle to successfully unlock in the past period of time, and therefore the unlocking distance calibration value needs to be adjusted downward and the RSSI calibration value needs to be adjusted upward in order to improve the safety of unlocking the vehicle.

[0081] Further, the vehicle end adjusts the unlocking distance calibration value and the RSSI calibration value according to probabilities that the historical unlocking data is below the unlocking data reference value and that the historical unlocking data is above the unlocking data reference value, and the adjusting includes the following steps: determining an unlocking data reference interval in the plurality of unlocking data intervals, the unlocking data reference interval including the unlocking distance reference value and the unlocking duration reference value; if the probability distribution is that the probability that the historical unlocking data is below the unlocking data reference interval is greater than the probability that the historical unlocking data is above the unlocking data reference interval, then the unlocking distance calibration value is increased and the RSSI calibration value is decreased; and if the probability distribution is that the probability that the historical unlocking data is above the unlocking data reference interval is greater than the probability that the historical unlocking data is below the unlocking data reference interval, then the unlocking distance calibration value is decreased and the RSSI calibration value is increased.

[0082] In one case, if the probability distribution is that the probability that the historical unlocking data is in the unlocking data reference interval is the greatest and exceeds the preset probability, it indicates that the historical unlocking data when the vehicle is unlocked without sensing in the past period of time is not much different from the unlocking data reference value, and thus the unlocking distance calibration value and the RSSI calibration value do not need to be adjusted.

[0083] Specifically, if the probability distribution is that the probability that the historical unlocking data is below the unlocking data reference interval is greater than the probability that the historical unlocking data is above the unlocking data reference interval, then the unlocking distance calibration value is increased and the RSSI calibration value is decreased, which can include the following cases:

[0084] First, if the probability distribution is that the probability that the historical unlocking data is below the unlocking data reference interval is the greatest and exceeds the preset probability, it indicates that in the past period of time, the distance from the mobile terminal to the vehicle when the vehicle is unlocked without sensing is below the unlocking distance reference value in most cases, and thus the mobile terminal needs to be very close to the vehicle to successfully unlock the vehicle, which can be due to the fact that the Bluetooth connection signal between the mobile terminal and the vehicle is affected by a wall, metal, or other shielding objects, or can be due to the fact that other Bluetooth devices or wireless signals exist around the vehicle and interfere with the Bluetooth connection signal, such as Wi-Fi signals or electromagnetic interference generated by electronic devices such as microwave ovens, and thus the unlocking distance calibration value is increased by a first preset distance and the RSSI calibration value is decreased by a first preset RSSI value to reduce the unlocking requirement when the vehicle is unlocked without sensing.

[0085] The second kind: if the probability distribution condition is that the probability of the historical unlocking data being distributed below the unlocking data reference interval is the maximum and does not exceed the preset probability, and the probability of the historical unlocking data being distributed in the unlocking data reference interval exceeds the probability of the historical unlocking data being distributed above the unlocking data reference interval, it is indicated that in the past period of time, in most cases, the distance between the mobile terminal and the vehicle when the vehicle is unlocked without sensing is below the unlocking distance reference value, at this time, the mobile terminal needs to be very close to the vehicle to successfully unlock the vehicle, in a few cases, the distance between the mobile terminal and the vehicle when the vehicle is unlocked without sensing fluctuates around the unlocking distance reference value, at this time, the mobile terminal is close to the vehicle but does not need to be very close to successfully unlock the vehicle, the unlocking distance calibration value is adjusted by a second preset distance, the RSSI calibration value is adjusted by a second preset RSSI value, the first preset distance is greater than the second preset distance, and the first preset RSSI value is greater than the second preset RSSI value, so as to reduce the unlocking requirement of the vehicle unlocked without sensing, but the reduction degree is lower than that of the first kind of condition.

[0086] The third kind: if the probability distribution condition is that the probability of the historical unlocking data being distributed in the unlocking data reference interval is the maximum and does not exceed the preset probability, and the probability of the historical unlocking data being distributed below the unlocking data reference interval exceeds the probability of the historical unlocking data being distributed above the unlocking data reference interval, it is indicated that in the past period of time, in most cases, the distance between the mobile terminal and the vehicle when the vehicle is unlocked without sensing fluctuates around the unlocking distance reference value, at this time, the mobile terminal is close to the vehicle but does not need to be very close to successfully unlock the vehicle, in a few cases, the distance between the mobile terminal and the vehicle when the vehicle is unlocked without sensing is below the unlocking distance reference value, at this time, the mobile terminal needs to be very close to the vehicle to unlock the vehicle, in order to take into account the few cases, the unlocking distance calibration value is adjusted by a third preset distance, the RSSI calibration value is adjusted by a third preset RSSI value, the third preset distance is less than the second preset distance, and the third preset RSSI value is less than the second preset RSSI value, so as to reduce the unlocking requirement of the vehicle unlocked without sensing, but the reduction degree is lower than that of the second kind of condition.

[0087] It can be seen that the first preset distance, the second preset distance and the third preset distance are sequentially reduced, and the first preset RSSI value, the second preset RSSI value and the third preset RSSI value are sequentially reduced, the case of needing to reduce the unlocking requirement according to the probability distribution condition is subdivided into three different degrees, for different degrees, different values are used to adjust the calibration parameters to different degrees, and the degree of adjustment matches the degree of the unlocking requirement that needs to be reduced.

[0088] In another aspect, if the probability distribution condition is that the probability of the historical unlocking data being distributed above the unlocking data reference interval is greater than the probability of the historical unlocking data being distributed below the unlocking data reference interval, then the unlocking distance calibration value is adjusted downward and the RSSI calibration value is adjusted upward, which can include the following conditions:

[0089] First, if the probability distribution condition is that the probability of the historical unlocking data being distributed in the unlocking data reference interval is the greatest and does not exceed the preset probability, and the probability of the historical unlocking data being distributed above the unlocking data reference interval is greater than the probability of the historical unlocking data being distributed below the unlocking data reference interval, it indicates that, in the past period of time, the distance from the mobile terminal to the vehicle when the vehicle is unlocked without sensing is mostly fluctuated around the unlocking distance reference value, and the distance from the mobile terminal to the vehicle when the vehicle is unlocked without sensing is rarely higher than the unlocking distance reference value. In order to improve the vehicle unlocking safety and take into account the two conditions, the calibration parameters are fine-tuned, that is, the unlocking distance calibration value is adjusted downward by the third preset distance, and the RSSI calibration value is adjusted upward by the third preset RSSI value, so as to increase the unlocking requirement of the vehicle unlocked without sensing, and the increase degree is similar to the decrease degree of the third condition.

[0090] Second, if the probability distribution condition is that the probability of the historical unlocking data being distributed above the unlocking data reference interval is the greatest and exceeds the preset probability, and the probability of the historical unlocking data being distributed in the unlocking data reference interval is greater than the probability of the historical unlocking data being distributed below the unlocking data reference interval, it indicates that, in the past period of time, the distance from the mobile terminal to the vehicle when the vehicle is unlocked without sensing is mostly higher than the unlocking distance reference value, and the distance from the mobile terminal to the vehicle when the vehicle is unlocked without sensing is rarely fluctuated around the unlocking distance reference value. In order to improve the vehicle unlocking safety and take into account the two conditions, the unlocking distance calibration value is adjusted downward by the second preset distance, and the RSSI calibration value is adjusted upward by the second preset RSSI value, so as to increase the unlocking requirement of the vehicle unlocked without sensing, and the increase degree is higher than the increase degree of the first condition.

[0091] Third, if the probability distribution condition is that the probability of the historical unlocking data being distributed above the unlocking data reference interval is the greatest and exceeds the preset probability, it indicates that, in the past period of time, the distance from the mobile terminal to the vehicle when the vehicle is unlocked without sensing is mostly higher than the unlocking distance reference value. In order to improve the vehicle unlocking safety, the unlocking distance calibration value is adjusted downward by the first preset distance, and the RSSI calibration value is adjusted upward by the first preset RSSI value, so as to increase the unlocking requirement of the vehicle unlocked without sensing, and the increase degree is higher than the increase degree of the second condition.

[0092] Similarly to the above-mentioned manner of reducing the unlocking requirement, three different degrees of cases are also subdivided for the case of needing to raise the unlocking requirement, and different numerical values are used to calibrate the parameters to different degrees of adjustment, and the degree of adjustment matches the degree of the need to raise the unlocking requirement.

[0093] The preset probability can be set to a higher value, for example, 70% or 60%, etc. The specific values of the first preset distance, the second preset distance, and the third preset distance, and the first preset RSSI value, the second preset RSSI value, and the third preset RSSI value can be determined according to real vehicle calibration. For example, the first preset distance is any one of 1.5m-2m, the second preset distance is any one of 0.5m-1.5m, and the third preset distance is any one of 0-0.5m. The first preset RSSI value is 3dB, the second preset RSSI value is 2dB, and the third preset RSSI value is 1dB.

[0094] For example, the preset unlocking data interval is arranged in ascending order, which is (0, 1.5]s and [0, 1.2]m, (1.5, 3]s and (1.2, 3]m, (3, 5]s and (2.4, 5.4]m, and (5, 8]s and (5.4, 7.9]m. As shown in Table 1, the probability distribution of the plurality of historical unlocking data obtained 7 times in each unlocking data interval and the corresponding adjustment mode:

[0095] Table 1

[0096]

[0097]

[0098] In some embodiments, in order to avoid frequent adjustment of calibration parameters in a short period of time leading to a large difference in user experience, a minimum parameter adjustment period can also be set for the calibration parameters, for example, 5 days. Optionally, the local calibration parameters can also be set to have a high priority, and when the user considers that the adjusted calibration parameters are not suitable, the adjusted calibration parameters can be restored to the default calibration parameters. Optionally, for the same vehicle model, the user establishes an account and logs in to the account, binds the account with the calibration parameters of the vehicle end, and if the user replaces the mobile terminal, when the user logs in to the same account through the new mobile terminal, the new mobile terminal and the vehicle end are successfully matched through Bluetooth, and the vehicle end will automatically synchronize the current calibration parameters used for unlocking judgment to the new mobile terminal, without the need to start adjusting from the default calibration parameters.

[0099] In some embodiments, after obtaining the adjusted unlocking distance calibration value and the adjusted RSSI calibration value, the adjusted unlocking distance calibration value and the adjusted RSSI calibration value are sent to the mobile terminal and the cloud for data synchronization. The cloud stores the adjusted calibration parameters uploaded by each vehicle under each username, and the calibration parameters are divided according to vehicle models. When the adjusted calibration parameters under the same vehicle model reach a certain capacity, for example, reach 500 or 1000 terabytes, the cloud can also count the probability distribution of the calibration parameters according to the steps of the calibration parameter adjustment method of the above-mentioned Bluetooth non-inductive unlocking, and then update the default calibration parameters of the vehicle model according to the probability distribution. The default calibration parameters are the calibration parameters obtained by the manufacturer. Optionally, the number of updates for updating the default calibration parameters of the cloud can also be set, and when the number of updates reaches a preset number, the default calibration parameters are no longer updated subsequently.

[0100] In the calibration parameter adjustment method of the above-mentioned Bluetooth non-inductive unlocking, the vehicle end obtains historical unlocking data at multiple historical moments, counts the probability distribution of the multiple historical unlocking data, and adjusts the local calibration parameters according to the probability distribution to obtain the adjusted calibration parameters. Compared with the prior art, the present application considers the differentiation of RSSI values in different scenarios, rather than using fixed calibration parameters as unlocking conditions. Moreover, the vehicle unlocking and locking are realized by the adjusted calibration parameters, which can better adapt to different unlocking and locking scenarios and improve the user experience.

[0101] In one embodiment, as shown in Figure 3 , a vehicle unlocking method is provided. The vehicle end 106 in Figure 1 is taken as an example to illustrate the method. The vehicle end and the mobile terminal establish a communication connection through Bluetooth. The method comprises the following steps:

[0102] Step 302, monitoring the current RSSI value of the mobile terminal;

[0103] Step 304, obtaining an adjusted unlocking distance calibration value and an adjusted RSSI calibration value;

[0104] It should be noted that the adjusted unlocking distance calibration value and the adjusted RSSI calibration value are obtained by the calibration parameter adjustment method of the above-mentioned Bluetooth non-inductive unlocking. For related content, please refer to the foregoing description, which will not be repeated here;

[0105] Step 306, if the current RSSI value gradually increases, when the current RSSI value is greater than or equal to the adjusted RSSI value, the current distance between the mobile terminal and the vehicle is calculated according to the current RSSI value; when the current distance is less than or equal to the adjusted unlocking distance calibration value, the vehicle is unlocked;

[0106] In step 308, if the current RSSI value gradually decreases, when the current RSSI value is less than or equal to the adjusted RSSI value, the current distance from the mobile terminal to the vehicle is calculated according to the current RSSI value; and when the current distance is greater than or equal to the adjusted unlocking distance calibration value, the vehicle is locked.

[0107] In some embodiments, after adjusting the local calibration parameters, in order to prevent over-adjustment, such as from too far unlocking distance to unlocking delay, etc., several buffer times are set after adjustment, for example, 5 times, when the unlocking distance of the 5 times is unreasonable, the probability distribution of the 5 times of unlocking data is also calculated, and the probability distribution of the 5 times of unlocking data and the probability distribution of the plurality of historical unlocking data obtained before are weighted, and the calibration parameters are re-optimized according to the weight.

[0108] In the above vehicle unlocking method, the local calibration parameters are adjusted by the historical unlocking data in the past period of time, and the vehicle is unlocked and locked without feeling according to the adjusted calibration parameters. The RSSI value differentiation existing in different scenes is considered, which can better adapt to different unlocking and locking scenes and improve the user experience.

[0109] It should be understood that, although Figures 2-3 Each step in the flowchart is displayed in sequence according to the arrow, but these steps are not necessarily executed in sequence according to the arrow. Unless otherwise stated herein, the execution of these steps has no strict order limitation, and these steps can be executed in other order. Moreover, Figures 2-3 At least part of the steps in the flowchart can include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily sequential, but can be executed in rotation or alternation with other steps or at least part of the sub-steps or stages of other steps.

[0110] In one embodiment, as shown in Figure 4 A calibration parameter adjustment device for Bluetooth unlocking is provided, which is applied to a vehicle end, the vehicle end and a mobile terminal establish a communication connection through Bluetooth, and the device includes a historical data acquisition module, a historical data statistical module and a calibration parameter adjustment module, wherein:

[0111] The historical data acquisition module is used to acquire historical unlocking data at a plurality of historical moments, the historical unlocking data includes corresponding historical unlocking time and historical unlocking distance, the historical unlocking time is the time from vehicle unlocking to the user opening the door, and the historical unlocking distance is the distance between the mobile terminal and the vehicle when the vehicle is unlocked without feeling.

[0112] a historical data statistics module, configured to calculate, as a unit of historical unlocking data at each historical moment, a probability distribution condition of the historical unlocking data at the plurality of historical moments in a plurality of preset unlocking data intervals, each of the unlocking data intervals comprising a corresponding unlocking time interval and unlocking distance interval;

[0113] a calibration parameter adjustment module, configured to adjust a local unlocking distance calibration value and an RSSI calibration value according to the probability distribution condition, so as to unlock or lock the vehicle according to the adjusted unlocking distance calibration value and RSSI calibration value.

[0114] In one embodiment, as shown in Figure 5 a vehicle unlocking device is provided, which is applied to a vehicle end, and the vehicle end establishes a communication connection with a mobile terminal through Bluetooth, and the device comprises an RSSI monitoring module, a calibration parameter acquisition module, and a non-inductive unlocking module, wherein:

[0115] the RSSI monitoring module is configured to monitor a current RSSI value of the mobile terminal;

[0116] the calibration parameter acquisition module is configured to acquire an adjusted unlocking distance calibration value and an RSSI calibration value, which are obtained by the calibration parameter adjustment method for Bluetooth non-inductive unlocking in any one of claims 1-7;

[0117] the non-inductive unlocking module is configured to, if the current RSSI value gradually increases, when the current RSSI value is greater than or equal to the adjusted RSSI value, calculate a current distance from the mobile terminal to the vehicle according to the current RSSI value, and when the current distance is less than or equal to the adjusted unlocking distance calibration value, unlock the vehicle;

[0118] the non-inductive unlocking module is further configured to, if the current RSSI value gradually decreases, when the current RSSI value is less than or equal to the adjusted RSSI value, calculate a current distance from the mobile terminal to the vehicle according to the current RSSI value, and when the current distance is greater than or equal to the adjusted unlocking distance calibration value, lock the vehicle.

[0119] The specific limitations of the calibration parameter adjustment device for the Bluetooth non-inductive unlocking can refer to the limitations of the calibration parameter adjustment method for the Bluetooth non-inductive unlocking, and the specific limitations of the vehicle unlocking device can refer to the limitations of the vehicle unlocking method, which will not be described here. Each module in the calibration parameter adjustment device for the Bluetooth non-inductive unlocking and the vehicle unlocking device can be realized by software, hardware, and combinations thereof, in whole or in part. The above-mentioned modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to each module.

[0120] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments of each method. In each embodiment provided by the present application, any reference to memory, storage, database, or other medium can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0121] Each technical feature of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of each technical feature in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the present application.

[0122] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A method for calibrating parameter adjustment of Bluetooth non-inductive unlocking, characterized in that, The method is applied to a vehicle end, the vehicle end establishes a communication connection with a mobile terminal through Bluetooth, and the method comprises: acquiring historical unlocking data at multiple historical moments, the historical unlocking data comprising corresponding historical unlocking time length and historical unlocking distance, the historical unlocking time length being the time length from vehicle non-inductive unlocking to the user opening the vehicle door, and the historical unlocking distance being the distance from the mobile terminal to the vehicle when the vehicle is non-inductively unlocked; taking the historical unlocking data at each historical moment as a unit, calculating the probability distribution of the historical unlocking data at the multiple historical moments in a plurality of preset unlocking data intervals, each unlocking data interval comprising corresponding unlocking time length interval and unlocking distance interval; adjusting the local unlocking distance calibration value and RSSI calibration value according to the probability distribution, and unlocking or locking the vehicle according to the adjusted unlocking distance calibration value and RSSI calibration value; wherein adjusting the local unlocking distance calibration value and RSSI calibration value according to the probability distribution comprises: acquiring a preset unlocking data reference value, the unlocking data reference value comprising corresponding unlocking time length reference value and unlocking distance reference value, the unlocking distance reference value being the reference distance from the mobile terminal to the vehicle when the vehicle is non-inductively unlocked, and the unlocking time length reference value being the reference time length for the user to open the vehicle door from a position at the unlocking distance reference value from the vehicle; adjusting the unlocking distance calibration value and the RSSI calibration value according to the probability of the historical unlocking data being below the unlocking data reference value and the probability of the historical unlocking data being above the unlocking data reference value.

2. The method of claim 1, wherein, Adjusting the unlocking distance calibration value and the RSSI calibration value according to the probability of the historical unlocking data being below the unlocking data reference value and the probability of the historical unlocking data being above the unlocking data reference value comprises: determining an unlocking data reference interval in the plurality of unlocking data intervals, the unlocking data reference interval comprising the unlocking distance interval in which the unlocking distance reference value is located and the unlocking time length interval in which the unlocking time length reference value is located; if the probability distribution is that the probability of the historical unlocking data being below the unlocking data reference interval exceeds the probability of the historical unlocking data being above the unlocking data reference interval, then the unlocking distance calibration value is increased and the RSSI calibration value is decreased; if the probability distribution is that the probability of the historical unlocking data being above the unlocking data reference interval exceeds the probability of the historical unlocking data being below the unlocking data reference interval, then the unlocking distance calibration value is decreased and the RSSI calibration value is increased.

3. The method of claim 2, wherein, if the probability distribution is that the probability of the historical unlocking data being below the unlocking data reference interval exceeds the probability of the historical unlocking data being above the unlocking data reference interval, then the unlocking distance calibration value is increased and the RSSI calibration value is decreased, comprising: If the probability distribution condition is that the probability of the historical unlocking data being distributed below the unlocking data reference interval is the largest and exceeds the preset probability, the unlocking distance calibration value is increased by a first preset distance, and the RSSI calibration value is decreased by a first preset RSSI value; If the probability distribution condition is that the probability of the historical unlocking data being distributed below the unlocking data reference interval is the largest and does not exceed the preset probability, and the probability of the historical unlocking data being distributed in the unlocking data reference interval exceeds the probability of the historical unlocking data being distributed above the unlocking data reference interval, the unlocking distance calibration value is increased by a second preset distance, and the RSSI calibration value is decreased by a second preset RSSI value; If the probability distribution condition is that the probability of the historical unlocking data being distributed in the unlocking data reference interval is the largest and does not exceed the preset probability, and the probability of the historical unlocking data being distributed below the unlocking data reference interval exceeds the probability of the historical unlocking data being distributed above the unlocking data reference interval, the unlocking distance calibration value is increased by a third preset distance, and the RSSI calibration value is decreased by a third preset RSSI value; The numerical values of the first preset distance, the second preset distance and the third preset distance decrease in turn, and the numerical values of the first preset RSSI value, the second preset RSSI value and the third preset RSSI value decrease in turn.

4. The method of claim 3, wherein, If the probability distribution condition is that the probability of the historical unlocking data being distributed above the unlocking data reference interval exceeds the probability of the historical unlocking data being distributed below the unlocking data reference interval, the unlocking distance calibration value is decreased and the RSSI calibration value is increased, including: If the probability distribution condition is that the probability of the historical unlocking data being distributed in the unlocking data reference interval is the largest, and the probability of the historical unlocking data being distributed above the unlocking data reference interval exceeds the probability of the historical unlocking data being distributed below the unlocking data reference interval, the unlocking distance calibration value is decreased by the third preset distance, and the RSSI calibration value is increased by the third preset RSSI value; If the probability distribution condition is that the probability of the historical unlocking data being distributed above the unlocking data reference interval is the largest and exceeds the preset probability, and the probability of the historical unlocking data being distributed in the unlocking data reference interval exceeds the probability of the historical unlocking data being distributed below the unlocking data reference interval, the unlocking distance calibration value is decreased by the second preset distance, and the RSSI calibration value is increased by the second preset RSSI value; If the probability distribution condition is that the probability of the historical unlocking data being distributed above the unlocking data reference interval is the largest and exceeds the preset probability, the unlocking distance calibration value is decreased by the first preset distance, and the RSSI calibration value is increased by the first preset RSSI value.

5. The method of claim 1, wherein, The historical unlocking distances at the plurality of historical time instants are acquired, including: A preset adult walking speed and a vehicle door opening duration are acquired; The historical unlocking distance at each of the historical time points is obtained by multiplying the historical unlocking time length at each of the historical time points minus the door opening time length by the adult walking speed.

6. The method of claim 5, wherein, After obtaining the historical unlocking data at the plurality of historical time points, the method further comprises: obtaining a preset maximum unlocking time length; determining whether the historical unlocking time length at each of the historical time points is greater than the maximum unlocking time length; filtering out the historical unlocking time length greater than the maximum unlocking time length and the corresponding historical unlocking distance in the historical unlocking data at the plurality of historical time points.

7. A vehicle unlocking method characterized by, The method is applied to a vehicle end, the vehicle end establishes a communication connection with a mobile terminal through Bluetooth, and the method comprises: monitoring a current RSSI value of the mobile terminal; obtaining an adjusted unlocking distance calibration value and an RSSI calibration value, the adjusted unlocking distance calibration value and the RSSI calibration value being obtained by the calibration parameter adjustment method for Bluetooth non-inductive unlocking in any one of claims 1-6; if the current RSSI value gradually increases, when the current RSSI value is greater than or equal to the adjusted RSSI value, calculating a current distance from the mobile terminal to the vehicle according to the current RSSI value; and when the current distance is less than or equal to the adjusted unlocking distance calibration value, unlocking the vehicle; if the current RSSI value gradually decreases, when the current RSSI value is less than or equal to the adjusted RSSI value, calculating a current distance from the mobile terminal to the vehicle according to the current RSSI value; and when the current distance is greater than or equal to the adjusted unlocking distance calibration value, locking the vehicle.

8. A calibration parameter adjustment device for Bluetooth non-inductive unlocking, characterized in that, The device is applied to a vehicle end, the vehicle end establishes a communication connection with a mobile terminal through Bluetooth, and the device comprises: a historical data acquisition module, configured to obtain historical unlocking data at a plurality of historical time points, the historical unlocking data comprising mutually corresponding historical unlocking time length and historical unlocking distance, the historical unlocking time length being a time length from non-inductive unlocking of a vehicle to opening of a door by a user, and the historical unlocking distance being a distance between the mobile terminal and the vehicle when the vehicle is non-inductively unlocked; a historical data statistical module, configured to take the historical unlocking data at each of the historical time points as a unit, and calculate a probability distribution condition of the historical unlocking data at the plurality of historical time points in a plurality of preset unlocking data intervals, each of the unlocking data intervals comprising a mutually corresponding unlocking time length interval and unlocking distance interval; a calibration parameter adjustment module, configured to adjust a local unlocking distance calibration value and an RSSI calibration value according to the probability distribution condition, so as to unlock or lock the vehicle according to the adjusted unlocking distance calibration value and the RSSI calibration value; wherein adjusting the local unlocking distance calibration value and the RSSI calibration value according to the probability distribution condition comprises: obtaining a preset unlocking data reference value, the unlocking data reference value including a mutual corresponding unlocking time reference value and an unlocking distance reference value, the unlocking distance reference value being a reference distance from the mobile terminal to the vehicle when the vehicle is unlocked without sensing, and the unlocking time reference value being a reference time length for a user to open a door from a place at the unlocking distance reference value to the vehicle; adjusting the unlocking distance reference value and the RSSI reference value according to a probability of the historical unlocking data being below the unlocking data reference value and a probability of the historical unlocking data being above the unlocking data reference value.

9. A vehicle unlocking device characterized by comprising: The device is applied to a vehicle end, the vehicle end establishes a communication connection with a mobile terminal through Bluetooth, and the device includes: an RSSI monitoring module, configured to monitor a current RSSI value of the mobile terminal; a calibration parameter obtaining module, configured to obtain an adjusted unlocking distance reference value and an adjusted RSSI reference value, the adjusted unlocking distance reference value and the adjusted RSSI reference value being obtained through the calibration parameter adjusting method for Bluetooth unlocking without sensing according to any one of claims 1 to 6; an unlocking without sensing module, configured to, if the current RSSI value gradually increases, when the current RSSI value is greater than or equal to the adjusted RSSI reference value, calculate a current distance from the mobile terminal to the vehicle according to the current RSSI value, and when the current distance is less than or equal to the adjusted unlocking distance reference value, unlock the vehicle; the unlocking without sensing module is further configured to, if the current RSSI value gradually decreases, when the current RSSI value is less than or equal to the adjusted RSSI reference value, calculate a current distance from the mobile terminal to the vehicle according to the current RSSI value, and when the current distance is greater than or equal to the adjusted unlocking distance reference value, lock the vehicle.

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