Calibration parameter adjusting method for Bluetooth non-inductive unlocking, and vehicle unlocking method and device

Abstract

The invention relates to the technical field of vehicle unlocking, in particular to a calibration parameter adjusting method for Bluetooth non-inductive unlocking and a vehicle unlocking method and device. The adjusting method comprises the steps that historical unlocking data at a plurality of historical moments are obtained, the historical unlocking data comprise historical unlocking duration and historical unlocking distance which correspond to each other, the historical unlocking duration is the duration from vehicle non-inductive unlocking to vehicle door opening of a user, and the historical unlocking distance is the distance from a mobile terminal to a vehicle when the vehicle is non-inductive unlocking; calculating a probability distribution condition of the plurality of historical unlocking data in a plurality of preset unlocking data intervals, wherein each unlocking data interval comprises an unlocking duration interval and an unlocking distance interval which correspond to each other; and adjusting 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. The method can adapt to different unlocking scenes.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle unlocking, and in particular to a calibration parameter adjustment method for Bluetooth sensorless unlocking, a vehicle unlocking method and a device. Background Art

[0002] Bluetooth contactless unlocking has become the current mainstream vehicle unlocking configuration method. The unlocking method is: the vehicle establishes a communication connection with the mobile terminal via Bluetooth, monitors the received signal strength indication (RSSI) value of the mobile terminal through the Bluetooth antenna, calculates the distance from the mobile terminal to the vehicle based on the RSSI value, and then determines whether the unlocking conditions are met based on the distance from the mobile terminal to the vehicle.

[0003] The RSSI value will be affected by the location or environment of the mobile terminal. For example, when the location is the same, the RSSI values ​​corresponding to the user holding the mobile terminal normally and placing the mobile terminal in a bag are different. For example, when the distance from the mobile terminal to the vehicle is the same, the RSSI values ​​corresponding to the environment of a garage, open air, or with obstructions such as walls are also different.

[0004] However, the existing Bluetooth sensorless unlocking uses a fixed set of calibration parameters as vehicle unlocking conditions, without considering the differences in RSSI values ​​brought about by different scenarios. It is difficult to adapt to different vehicle unlocking scenarios, resulting in a poor user experience. Summary of the invention

[0005] Based on this, a calibration parameter adjustment method for Bluetooth senseless unlocking, a vehicle unlocking method and a device are provided to adapt to different unlocking scenarios and improve the user experience.

[0006] In a first aspect, a calibration parameter adjustment method for Bluetooth senseless unlocking is provided, the method is applied to a vehicle end, the vehicle end establishes a communication connection with a mobile terminal via Bluetooth, the method comprising:

[0007] Acquire historical unlocking data at multiple historical moments, the historical unlocking data including corresponding historical unlocking durations and historical unlocking distances, the historical unlocking duration being the time taken from the vehicle being unlocked without a sense of touch to the user opening the door, and the historical unlocking distance being the distance from the mobile terminal to the vehicle when the vehicle is unlocked without a sense of touch;

[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 multiple preset unlocking data intervals, each of the unlocking data intervals including mutually corresponding unlocking time intervals and unlocking distance intervals;

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

[0010] In combination with the first aspect, in a first possible implementation of the first aspect, adjusting the local unlocking distance calibration value and the RSSI calibration value according to the probability distribution includes:

[0011] Obtaining a preset unlocking data reference value, wherein the unlocking data reference value includes a corresponding unlocking time reference value and an unlocking distance reference value, wherein the unlocking distance reference value is a reference distance from the mobile terminal to the vehicle when the vehicle is unlocked without any sense, and the unlocking time reference value is a reference time taken by a user to open the door from a position at the unlocking distance reference value of the vehicle;

[0012] The unlocking distance calibration value and the RSSI calibration value are adjusted according to a probability that the historical unlocking data is distributed below the unlocking data reference value and a probability that the historical unlocking data is distributed above the unlocking data reference value.

[0013] In combination with the first implementable embodiment of the first aspect, in a second implementable embodiment of the first aspect, adjusting the unlocking distance calibration value and the RSSI calibration value according to a probability that the historical unlocking data is distributed below the unlocking data reference value and a probability that the historical unlocking data is distributed above the unlocking data reference value includes:

[0014] Determining an unlocking data reference interval from the plurality of unlocking data intervals, the unlocking data reference interval comprising an unlocking distance interval where the unlocking distance reference value is located and an unlocking duration interval where the unlocking duration reference value is located;

[0015] If the probability distribution is that the probability that the historical unlocking data is distributed below the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed above the unlocking data reference interval, then the unlocking distance calibration value is increased and the RSSI calibration value is decreased;

[0016] If the probability distribution is that the probability that the historical unlocking data is distributed above the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed below the unlocking data reference interval, the unlocking distance calibration value is lowered and the RSSI calibration value is increased.

[0017] In combination with the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, if the probability distribution situation is that the probability that the historical unlocking data is distributed below the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed above the unlocking data reference interval, then the unlocking distance calibration value is increased and the RSSI calibration value is decreased, including:

[0018] If the probability distribution is that the probability that the historical unlocking data is 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;

[0019] If the probability distribution is that the probability that the historical unlocking data is distributed below the unlocking data reference interval is the largest and does not exceed the preset probability, and the probability that the historical unlocking data is distributed within the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed above the unlocking data reference interval, then 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;

[0020] If the probability distribution is that the probability that the historical unlocking data is distributed in the unlocking data reference interval is the largest and does not exceed the preset probability, and the probability that the historical unlocking data is distributed below the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed above the unlocking data reference interval, then 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;

[0021] The values ​​of the first preset distance, the second preset distance and the third preset distance decrease in sequence, and the values ​​of the first preset RSSI value, the second preset RSSI value and the third preset RSSI value decrease in sequence.

[0022] In combination with the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, if the probability distribution situation is that the probability that the historical unlocking data is distributed above the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed below the unlocking data reference interval, then lowering the unlocking distance calibration value and raising the RSSI calibration value, including:

[0023] If the probability distribution 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, then the unlocking distance calibration value is adjusted down by the third preset distance, and the RSSI calibration value is adjusted up by the third preset RSSI value;

[0024] If the probability distribution is that the probability that the historical unlocking data is distributed above the unlocking data reference interval is the largest and exceeds the preset probability, and the probability that the historical unlocking data is distributed within the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed below the unlocking data reference interval, then the unlocking distance calibration value is adjusted down by the second preset distance, and the RSSI calibration value is adjusted up by the second preset RSSI value;

[0025] If the probability distribution is that the probability that the historical unlocking data is distributed above the unlocking data reference interval is the largest and exceeds the preset probability, the unlocking distance calibration value is adjusted down by the first preset distance, and the RSSI calibration value is adjusted up by the first preset RSSI value.

[0026] In combination with the first aspect, in a fifth possible implementation of the first aspect, obtaining the historical unlocking distances at the multiple historical moments includes:

[0027] Get the preset adult walking speed and door opening time;

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

[0029] In combination with the fifth possible implementation of the first aspect, in a sixth possible implementation of the first aspect, after acquiring the historical unlocking data at the multiple historical moments, the method further includes:

[0030] Get the preset maximum unlocking time;

[0031] Determine whether the historical unlocking duration at each of the historical moments is greater than the maximum unlocking duration;

[0032] In the historical unlocking data at the multiple historical moments, the historical unlocking durations and the corresponding historical unlocking distances that are greater than the maximum unlocking duration are filtered out.

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

[0034] Monitoring the current RSSI value of the mobile terminal;

[0035] Obtaining an adjusted unlocking distance calibration value and an RSSI calibration value, wherein the adjusted unlocking distance calibration value and the RSSI calibration value are obtained by the calibration parameter adjustment method for Bluetooth sensorless unlocking according to any one of the first aspect or the first to sixth embodiments 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, the current distance from the mobile terminal to 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;

[0037] 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 based on the current RSSI value; when the current distance is greater than or equal to the adjusted unlocking distance calibration value, the vehicle is locked.

[0038] In a third aspect, a calibration parameter adjustment device for Bluetooth senseless unlocking is provided, the device is applied to a vehicle end, the vehicle end establishes a communication connection with a mobile terminal via Bluetooth, and the device includes:

[0039] A historical data acquisition module, used to acquire historical unlocking data at multiple historical moments, wherein the historical unlocking data includes corresponding historical unlocking durations and historical unlocking distances, wherein the historical unlocking duration is the time taken from the vehicle being unlocked without a sense of touch 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 a sense of touch;

[0040] A historical data statistics module, used to calculate the probability distribution of the historical unlocking data at each of the historical moments in a plurality of preset unlocking data intervals, with the historical unlocking data at each of the historical moments as a unit, each of the unlocking data intervals including mutually corresponding unlocking time intervals and unlocking distance intervals;

[0041] The calibration parameter adjustment module is used to adjust the local unlocking distance calibration value and 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 RSSI calibration value.

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

[0043] An RSSI monitoring module is used to monitor the current RSSI value of the mobile terminal;

[0044] A calibration parameter acquisition module, used to obtain an adjusted unlocking distance calibration value and an RSSI calibration value, wherein the adjusted unlocking distance calibration value and the RSSI calibration value are obtained by the calibration parameter adjustment method for Bluetooth sensorless unlocking according to any one of the first aspect or the first to sixth embodiments of the first aspect;

[0045] A sensorless unlocking module, configured to calculate the current distance from the mobile terminal to the vehicle according to the current RSSI value if the current RSSI value gradually increases and when the current RSSI value is greater than or equal to the adjusted RSSI value; and unlock the vehicle when the current distance is less than or equal to the adjusted unlocking distance calibration value;

[0046] The contactless unlocking module is also used to calculate the current distance from the mobile terminal to the vehicle according to the current RSSI value if the current RSSI value gradually decreases, 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, vehicle unlocking method and device of the above-mentioned Bluetooth senseless unlocking, the calibration parameter adjustment method is applied to the vehicle side, the vehicle side and the mobile terminal establish a communication connection through Bluetooth, the method comprises: obtaining historical unlocking data at multiple historical moments, each historical unlocking data comprises a corresponding historical unlocking time and historical unlocking distance, the historical unlocking time is the time taken from the vehicle senseless unlocking to the user opening the door, and the historical unlocking distance is the distance from the mobile terminal to the vehicle when the vehicle senseless unlocking; taking the historical unlocking data at each historical moment as a unit, calculating the probability distribution of the historical unlocking data at multiple historical moments in multiple preset unlocking data intervals, each unlocking data interval comprises a corresponding unlocking distance interval and unlocking time interval; adjusting the unlocking distance calibration value and 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 senseless unlocking in the past period of time. Compared with the prior art, the RSSI value differentiation brought by different scenarios is considered. Using the adjusted calibration parameters to unlock the vehicle can better adapt to different unlocking scenarios and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is an application environment diagram of a calibration parameter adjustment method for Bluetooth sensorless unlocking in one embodiment;

[0049] Figure 2 It is a flowchart of a calibration parameter adjustment method for Bluetooth sensorless unlocking in one embodiment;

[0050] Figure 3 A schematic flow chart of a vehicle unlocking method in one embodiment;

[0051] Figure 4 It is a structural block diagram of calibration parameter adjustment for Bluetooth sensorless unlocking in one embodiment;

[0052] Figure 5 FIG. 4 is a structural block diagram of a vehicle unlocking device in one embodiment. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0054] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present application in a schematic manner, and therefore the drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0055] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0056] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0057] Since the current Bluetooth senseless unlocking only has a fixed set of calibration parameters to unlock the vehicle, the RSSI value of the mobile terminal monitored by the vehicle side will be affected by the location, environment and usage status of the mobile terminal. For example, in the same location, the corresponding RSSI values ​​are different when the user holds the mobile terminal normally and places the mobile terminal in a bag; for another example, when the distance between the mobile terminal and the vehicle side is the same, the corresponding RSSI values ​​are also different when the environment is a garage, open air, and there are obstacles such as walls; for another example, in the same location, the user uses the mobile terminal to make calls and send messages, and the corresponding RSSI values ​​may also be different. Therefore, the existing calibration parameters of Bluetooth senseless unlocking do not take into account the differences in RSSI values ​​brought about by different scenarios, and it is difficult to adapt to different vehicle unlocking scenarios, resulting in a poor user experience.

[0058] To this end, the present application provides a calibration parameter adjustment method for Bluetooth sensorless unlocking, which can be applied to Figure 1 The vehicle end 106 in the application environment shown. Among them, the cloud 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 the pairing is successful. The mobile terminal 104 can be, but is not limited to, various smart phones, personal computers, laptops, tablet computers and portable wearable devices. After the manufacturer completes the parameter calibration of the Bluetooth senseless unlocking of a certain model, the calibration parameters are uploaded to the cloud 102 for storage; when the user activates the senseless Bluetooth key of the model through the mobile terminal 104, the cloud 102 sends the calibration parameters to the user's mobile terminal 104; when the user successfully pairs the mobile terminal 104 with 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 has been used for a period of time, the vehicle end 106 obtains the historical unlocking data of the vehicle senseless 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 takes into account the differences in RSSI values ​​brought about by different scenarios, and uses adjusted calibration parameters to unlock the vehicle, which can better adapt to different unlocking scenarios and improve the user experience.

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

[0060] In one embodiment, Figure 2 As shown, a calibration parameter adjustment method for Bluetooth sensorless unlocking is provided, and the method is applied to Figure 1 Taking the vehicle end 106 in the example as an example, the vehicle end establishes a communication connection with the mobile terminal via Bluetooth, and the method includes the following steps:

[0061] Step 202, obtaining historical unlocking data at multiple historical moments, wherein the historical unlocking data includes corresponding historical unlocking durations and historical unlocking distances, wherein the historical unlocking duration is the time taken from the vehicle being unlocked without any sense to the user opening the door, and the historical unlocking distance is the distance from the mobile terminal to the vehicle when the vehicle is unlocked without any sense.

[0062] It should be noted that before executing the steps of the calibration parameter adjustment method of the present application, after the manufacturer completes the parameter calibration of the Bluetooth senseless unlocking of a certain model of vehicle, the calibration parameters will be uploaded to the cloud for storage, and the calibration parameters include the unlocking distance calibration value and the RSSI calibration value; the user can download and install the application software specified by the manufacturer on the mobile terminal, create a new account and log in to the account to set and bind the vehicle information; when the user activates the senseless Bluetooth key of the model through the mobile terminal, the cloud will send the calibration parameters to the user's mobile terminal through the network; when the user successfully pairs the mobile terminal with the vehicle for the first time through Bluetooth, the mobile terminal will transmit the calibration parameters to the vehicle.

[0063] After that, users can use the non-contact Bluetooth key to realize non-contact unlocking and non-contact locking of the vehicle. When the user carries the mobile terminal and keeps approaching the vehicle, the vehicle will automatically sense and start the unlocking process until the unlocking conditions are met. When the user carries the mobile terminal and keeps moving away from the vehicle, the vehicle will automatically sense and start the locking process until the unlocking conditions are no longer met. The vehicle will automatically lock. Bluetooth non-contact unlocking can unlock and lock the vehicle without a physical key, and there is no need for the user to actively initiate unlocking and locking commands, which reduces user operations and greatly improves convenience.

[0064] In addition, before executing the steps of the calibration parameter adjustment method of the present application, each time the user brings the mobile terminal close to the vehicle to achieve contactless unlocking, the vehicle end will record the moment of contactless unlocking of the vehicle, that is, the moment when the vehicle end determines that the RSSI value of the mobile terminal and the distance from the mobile terminal to the vehicle respectively meet the calibrated RSSI calibration value and unlocking distance calibration value; when the user opens the car door, the vehicle end will also record the moment when the car door opens; the vehicle end calculates the time from the moment the vehicle is contactlessly unlocked to the moment the car door opens, and obtains the unlocking time; the vehicle end then obtains the preset adult walking speed and door opening time, subtracts the preset door opening time from the unlocking time, and multiplies it by the preset adult walking speed to obtain the unlocking distance.

[0065] By following the above steps every time the vehicle is unlocked without contact, the historical unlocking data at each historical moment can be recorded, that is, the corresponding historical unlocking time and historical unlocking distance; the historical unlocking data at each historical moment is stored in the memory. In order to prevent data loss, the historical unlocking data at each historical moment 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 historical unlocking data and to enable subsequent steps to obtain historical unlocking data of multiple historical moments closest to the current moment, the number of historical unlocking data to be stored is set. When the number of historical unlocking data in the memory exceeds the set number, the corresponding historical unlocking data is deleted in chronological order, starting from the historical moment latest than the current moment, until the number of deleted historical unlocking data 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 moments from the memory, and the number of historical unlocking data to be obtained can be preset, illustratively, 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 starting from the historical moment closest to the current moment in chronological order until the number of historical unlocking data obtained reaches the set number,

[0068] When approaching the vehicle to unlock the phone, the user may be delayed on the way or stay for a short time near the vehicle, causing the recorded historical unlocking time to be too long. This type of data is caused by the user's subjective factors, and is not caused by the mobile terminal being affected by the location, environment or usage status. Therefore, this type of data is regarded as illegal data.

[0069] In order not to affect the adjustment of calibration parameters by illegal data, after obtaining the historical unlocking data at the multiple historical moments, such data is filtered out through the following steps: obtaining the preset maximum unlocking duration; determining whether the historical unlocking duration at each of the historical moments is greater than the maximum unlocking duration; and filtering out the historical unlocking duration and corresponding historical unlocking distance greater than the maximum unlocking duration in the historical unlocking data at the multiple historical moments. Exemplarily, the maximum unlocking duration is set to 8 seconds.

[0070] After the illegal data is filtered out, the number of historical unlocking data decreases and is less than the preset number. Therefore, optionally, after filtering out the illegal data, the vehicle end obtains the historical unlocking data that is not illegal data and is closest to the current moment from the memory in chronological order. The number of historical unlocking data obtained again is based on the preset number.

[0071] In some embodiments, in order to reduce the memory space occupied by illegal data and to improve the convenience of using historical unlocking data at each historical moment, the vehicle side obtains the preset maximum unlocking duration after recording the historical unlocking data at each historical moment, and determines 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, taking the historical unlocking data at each of the historical moments as a unit, calculate the probability distribution of the historical unlocking data at the multiple historical moments in multiple preset unlocking data intervals, each of the unlocking data intervals including mutually corresponding unlocking time intervals and unlocking distance intervals.

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

[0074] Therefore, the probability distribution of the historical unlocking data at multiple historical moments is calculated by taking the historical unlocking data at each historical moment as a unit. Specifically, the statistical probability distribution may include the following steps: obtaining multiple preset unlocking data intervals, each unlocking data interval including mutually corresponding unlocking distance intervals and unlocking duration intervals; arranging multiple unlocking distance intervals and multiple unlocking duration intervals in order from small to large values; dividing the historical unlocking data at multiple historical moments into corresponding unlocking data intervals, and calculating the proportion of the historical unlocking data in each unlocking data interval in all the historical unlocking data, so as to obtain the probability distribution of multiple historical unlocking data in multiple unlocking data intervals. Generally speaking, the number of preset unlocking data intervals is at least three, and illustratively, there are four preset unlocking data intervals.

[0075] Step 206 : adjusting the local unlocking distance calibration value and 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 RSSI calibration value.

[0076] Among them, the local unlocking distance calibration value and RSSI calibration value of the vehicle side are the initial calibration parameters obtained after the mobile terminal and the vehicle side are successfully paired for the first time via Bluetooth and sent by the mobile terminal after the factory calibration.

[0077] Since the unlocking distance calibration value and RSSI calibration value are calibrated by the manufacturer based on factors such as common unlocking scenarios, the time it takes for a normal adult to open the door at a normal walking speed from the unlocking distance calibration value of the vehicle can be obtained through actual vehicle calibration. This time is referred to as the unlocking time threshold.

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

[0079] Specifically, the vehicle side adjusts the local unlocking distance calibration value and RSSI calibration value according to the probability distribution, including the following steps: obtaining a preset unlocking data benchmark value, the unlocking data benchmark value including a corresponding unlocking time benchmark value and an unlocking distance benchmark value, the unlocking distance benchmark value being the benchmark distance from the mobile terminal to the vehicle when the vehicle is unlocked without feeling, and the unlocking time benchmark value being the benchmark time taken by the user to open the door from the unlocking distance benchmark value of the vehicle; adjusting the unlocking distance calibration value and the RSSI calibration value according to the probability that the historical unlocking data is distributed below the unlocking data benchmark value and the probability that the historical unlocking data is distributed above the unlocking data benchmark value.

[0080] Furthermore, if the probability that the historical unlocking data is distributed below the unlocking data baseline value exceeds the probability that the historical unlocking data is distributed above the unlocking data baseline value, it means that the mobile terminal needs to be very close to the vehicle to successfully unlock the vehicle in the past period of time. In this case, it is necessary to increase the unlocking distance calibration value and decrease the RSSI calibration value; if the probability that the historical unlocking data is distributed above the unlocking data baseline value exceeds the probability that the historical unlocking data is distributed above the unlocking data baseline value, it means that the mobile terminal does not need to be very close to the vehicle to successfully unlock the vehicle in the past period of time. At this time, in order to improve the safety of vehicle unlocking, the unlocking distance calibration value can be appropriately lowered and the RSSI calibration value can be increased.

[0081] Furthermore, the vehicle side adjusts the unlocking distance calibration value and the RSSI calibration value according to the probability that the historical unlocking data is distributed below the unlocking data benchmark value and the probability that the historical unlocking data is distributed above the unlocking data benchmark value, including the following steps: determining an unlocking data benchmark interval among the multiple unlocking data intervals, the unlocking data benchmark interval including an unlocking distance interval where the unlocking distance benchmark value is located and an unlocking duration interval where the unlocking duration benchmark value is located; if the probability distribution is that the probability that the historical unlocking data is distributed below the unlocking data benchmark interval exceeds the probability that the historical unlocking data is distributed above the unlocking data benchmark interval, then adjusting the unlocking distance calibration value upward and adjusting the RSSI calibration value downward; if the probability distribution is that the probability that the historical unlocking data is distributed above the unlocking data benchmark interval exceeds the probability that the historical unlocking data is distributed below the unlocking data benchmark interval, then adjusting the unlocking distance calibration value downward and adjusting the RSSI calibration value upward.

[0082] In one case, if the probability distribution is that the probability of the historical unlocking data being distributed in the unlocking data benchmark interval is the largest and exceeds the preset probability, it means that the historical unlocking data of the user when the vehicle is unlocked without feeling in the past period of time is not much different from the unlocking data benchmark value, then there is no need to adjust the unlocking distance calibration value and the RSSI calibration value.

[0083] Specifically, if the probability distribution is that the probability that the historical unlocking data is distributed below the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed above the unlocking data reference interval, then the unlocking distance calibration value is increased and the RSSI calibration value is decreased, which may generally include the following situations:

[0084] The first type: if the probability distribution is that the probability that the historical unlocking data is distributed below the unlocking data benchmark interval is the largest and exceeds the preset probability, it means 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 sense is lower than the unlocking distance benchmark value. At this time, the mobile terminal needs to be very close to the vehicle to successfully unlock the vehicle. This may be because the Bluetooth connection signal between the mobile terminal and the vehicle is affected by obstructions such as walls and metals, or there may be other Bluetooth devices or wireless signals around that interfere with the Bluetooth connection signal, such as electromagnetic interference generated by Wi-Fi signals or electronic devices such as microwave ovens. In this case, the unlocking distance calibration value is increased by the first preset distance, and the RSSI calibration value is decreased by the first preset RSSI value to reduce the unlocking requirements for vehicle unlocking without sense;

[0085] The second type: if the probability distribution is that the probability that the historical unlocking data is distributed below the unlocking data benchmark interval is the largest and does not exceed the preset probability, and the probability that the historical unlocking data is distributed in the unlocking data benchmark interval exceeds the probability that the historical unlocking data is distributed above the unlocking data benchmark interval, it means that in the past period of time, in most cases, the distance between the mobile terminal and the vehicle is lower than the unlocking distance benchmark value when the vehicle is unlocked without any sense, and 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 fluctuates around the unlocking distance benchmark value when the vehicle is unlocked without any sense, and the mobile terminal can successfully unlock the vehicle without being very close to the vehicle. In this case, 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, and 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 unlocking without any sense, but the degree of reduction is lower than that of the first case above;

[0086] The third type: if the probability distribution is that the probability that the historical unlocking data is distributed in the unlocking data benchmark interval is the largest and does not exceed the preset probability, and the probability that the historical unlocking data is distributed below the unlocking data benchmark interval exceeds the probability that the historical unlocking data is distributed above the unlocking data benchmark interval, it means that in the past period of time, in most cases, the distance between the mobile terminal and the vehicle when the vehicle is senselessly unlocked fluctuates around the unlocking distance benchmark value. At this time, the mobile terminal is close to the vehicle but does not need to be very close to the vehicle to successfully unlock the vehicle. In a few cases, when the vehicle is senselessly unlocked, the distance between the mobile terminal and the vehicle is lower than the unlocking distance benchmark 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 minority of cases, the unlocking distance calibration value is increased by the third preset distance, and the RSSI calibration value is decreased by the third preset RSSI value, and 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 senseless unlocking, but the degree of reduction is lower than the degree of reduction in the above second case.

[0087] It can be seen that the present application sets 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, whose values ​​decrease in sequence, to subdivide the situation in which the unlocking requirements need to be lowered into three situations of different degrees according to the probability distribution situation. For situations of different degrees, different numerical values ​​are used to adjust the calibration parameters to different degrees, and the degree of adjustment matches the degree to which the unlocking requirements need to be lowered.

[0088] On the other hand, if the probability distribution is that the probability that the historical unlocking data is distributed above the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed below the unlocking data reference interval, then the unlocking distance calibration value is lowered and the RSSI calibration value is increased, which may generally include the following situations:

[0089] First, if the probability distribution is that the probability of the historical unlocking data being distributed in the unlocking data benchmark interval is the largest and does not exceed the preset probability, and the probability of the historical unlocking data being distributed above the unlocking data benchmark interval exceeds the probability of the historical unlocking data being distributed below the unlocking data benchmark interval, it means that in the past period of time, in most cases, the distance from the mobile terminal to the vehicle fluctuates around the unlocking distance benchmark value when the vehicle is unlocked without sense, and in a few cases, the distance from the mobile terminal to the vehicle is higher than the unlocking distance benchmark value when the vehicle is unlocked without sense. In order to improve the security of vehicle unlocking and take both situations into account, the calibration parameters are fine-tuned, that is, the unlocking distance calibration value is adjusted down by the third preset distance, and the RSSI calibration value is adjusted up by the third preset RSSI value, so as to increase the unlocking requirement of the vehicle without sense, and the degree of increase is similar to the degree of decrease in the third situation mentioned above;

[0090] Second, if the probability distribution is that the probability that the historical unlocking data is distributed above the unlocking data benchmark interval is the largest and exceeds the preset probability, and the probability that the historical unlocking data is distributed in the unlocking data benchmark interval exceeds the probability that the historical unlocking data is distributed below the unlocking data benchmark interval, it means that in the past period of time, in most cases, the distance from the mobile terminal to the vehicle when the vehicle is unlocked without sense is higher than the unlocking distance benchmark value, and in a few cases, the distance from the mobile terminal to the vehicle when the vehicle is unlocked without sense fluctuates around the unlocking distance benchmark value. In order to improve the security of vehicle unlocking and take both situations into consideration, the unlocking distance calibration value is adjusted down to the second preset distance, and the RSSI calibration value is adjusted up to the second preset RSSI value, so as to increase the unlocking requirement of vehicle unlocking without sense, and the degree of increase is higher than the degree of increase in the first case above.

[0091] Third, if the probability distribution is that the probability that the historical unlocking data is distributed above the unlocking data benchmark interval is the largest and exceeds the preset probability, it means 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 feeling is higher than the unlocking distance benchmark value. In order to improve the security of vehicle unlocking, the unlocking distance calibration value is lowered by the first preset distance, and the RSSI calibration value is increased by the first preset RSSI value to increase the unlocking requirement for vehicle unlocking without feeling, and the degree of increase is higher than the degree of increase in the above second case.

[0092] Similar to the above-mentioned method of lowering the unlocking requirements, three different levels of situations are also subdivided for the situations where the unlocking requirements need to be increased. For different levels of situations, different numerical values ​​are used to adjust the calibrated parameters to different degrees, and the degree of adjustment matches the degree of increase in the unlocking requirements.

[0093] Among them, 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 the actual vehicle calibration. For example, the first preset distance is any one of 1.5m to 2m, the second preset distance is any one of 0.5m to 1.5m, and the third preset distance is any one of 0 to 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 intervals are arranged in ascending order, namely: (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. Table 1 shows the probability distribution of multiple historical unlocking data obtained 7 times in each unlocking data interval and the corresponding adjustment method:

[0095] Table 1

[0096]

[0097]

[0098] In some embodiments, in order to avoid frequent adjustment of calibration parameters in a short period of time resulting in large differences in user experience, a shortest parameter adjustment period can be set for the calibration parameters, for example, 5 days; optionally, a high priority can be set for local calibration parameters, and when the user believes that the adjusted calibration parameters are inappropriate, the adjusted calibration parameters can be restored to the default calibration parameters; optionally, for the same model, the user creates an account and logs in to the account, and binds the account to the calibration parameters of the vehicle. If the user changes the mobile terminal, when the user logs in to the same account through the new mobile terminal, after the new mobile terminal and the vehicle are successfully matched through Bluetooth, the vehicle will automatically synchronize the calibration parameters currently used for unlocking judgment to the new mobile terminal, without the need to adjust from the default calibration parameters.

[0099] In some embodiments, after obtaining the adjusted unlocking distance calibration value and RSSI calibration value, they are sent to the mobile terminal and the cloud for data synchronization; the cloud stores the adjusted calibration parameters uploaded by the vehicle under each user name, and these calibration parameters are divided according to the vehicle model; when the adjusted calibration parameters under the same vehicle model reaches a certain capacity, for example, after reaching 500 or 1000 terabytes, the cloud can also follow the steps of the calibration parameter adjustment method for Bluetooth sensorless unlocking above, count the probability distribution of these calibration parameters, and then update the default calibration parameters of the vehicle model according to the probability distribution, and the default calibration parameters are the calibration parameters obtained by the manufacturer's mark; optionally, the update number can also be set for the cloud to update the default calibration parameters. When the update number reaches the preset number, the default calibration parameters will no longer be updated subsequently.

[0100] In the calibration parameter adjustment method for Bluetooth sensorless unlocking, the vehicle obtains historical unlocking data at multiple historical moments, and statistics 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, this application takes into account the RSSI value differences in different scenarios, rather than using fixed calibration parameters as unlocking conditions; moreover, the unlocking and locking of the vehicle is achieved through the adjusted calibration parameters, which can better adapt to different unlocking and locking scenarios and improve the user experience.

[0101] In one embodiment, Figure 3 As shown, a vehicle unlocking method is provided, which is applied to Figure 1 Taking the vehicle end 106 in the example as an example, the vehicle end establishes a communication connection with the mobile terminal via Bluetooth, and the method includes the following steps:

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

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

[0104] It should be noted that the adjusted unlocking distance calibration value and RSSI calibration value are obtained by the calibration parameter adjustment method of Bluetooth sensorless unlocking mentioned above. Please refer to the previous text for related content, 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, 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;

[0106] Step 308, 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.

[0107] In some embodiments, after adjusting the local calibration parameters, in order to prevent excessive adjustment and the situation where the unlocking distance is too far and then becomes unlocking delay, several buffer times are set after the adjustment, for example, 5 times. When the 5 unlocking distances are all unreasonable, the probability distribution of the 5 unlocking data is also calculated, and weights are assigned to the probability distribution of the 5 unlocking data and the probability distribution of the multiple historical unlocking data obtained before, and the calibration parameters are re-optimized according to the weights.

[0108] In the above vehicle unlocking method, the local calibration parameters are adjusted through 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 differences in different scenarios are taken into consideration, which can better adapt to different unlocking and locking scenarios and improve the user experience.

[0109] It should be understood that although Figure 2-3 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 2-3 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0110] In one embodiment, Figure 4 As shown, a calibration parameter adjustment device for Bluetooth senseless unlocking is provided, the device is applied to a vehicle end, the vehicle end and a mobile terminal establish a communication connection via Bluetooth, the device comprises: a historical data acquisition module, a historical data statistics module and a calibration parameter adjustment module, wherein:

[0111] A historical data acquisition module, used to acquire historical unlocking data at multiple historical moments, wherein the historical unlocking data includes corresponding historical unlocking durations and historical unlocking distances, wherein the historical unlocking duration is the time taken from the vehicle being unlocked without a sense of touch 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 a sense of touch;

[0112] A historical data statistics module, used to calculate the probability distribution of the historical unlocking data at each of the historical moments in a plurality of preset unlocking data intervals, with the historical unlocking data at each of the historical moments as a unit, each of the unlocking data intervals including mutually corresponding unlocking time intervals and unlocking distance intervals;

[0113] The calibration parameter adjustment module is used to adjust the local unlocking distance calibration value and 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 RSSI calibration value.

[0114] In one embodiment, Figure 5 As shown, 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 via Bluetooth. The device includes an RSSI monitoring module, a calibration parameter acquisition module and a non-sensing unlocking module, wherein:

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

[0116] A calibration parameter acquisition module, used to obtain an adjusted unlocking distance calibration value and an RSSI calibration value, wherein the adjusted unlocking distance calibration value and the RSSI calibration value are obtained by the calibration parameter adjustment method for Bluetooth sensorless unlocking according to any one of claims 1 to 7;

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

[0118] The contactless unlocking module is also used to calculate the current distance from the mobile terminal to the vehicle according to the current RSSI value if the current RSSI value gradually decreases, 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.

[0119] For the specific limitations of the calibration parameter adjustment device for Bluetooth senseless unlocking, please refer to the limitations of the calibration parameter adjustment method for Bluetooth senseless unlocking mentioned above. For the specific limitations of the vehicle unlocking device, please refer to the limitations of the vehicle unlocking method mentioned above, which will not be repeated here. The various modules in the above-mentioned calibration parameter adjustment device for Bluetooth senseless unlocking and the vehicle unlocking device can be fully or partially implemented by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0120] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and 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 embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application 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 and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), 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).

[0121] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0122] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A calibration parameter adjustment method for Bluetooth sensorless unlocking, characterized in that: The method is applied to a vehicle end, and the vehicle end establishes a communication connection with a mobile terminal via Bluetooth. The method includes: Acquire historical unlocking data at multiple historical moments, the historical unlocking data including corresponding historical unlocking durations and historical unlocking distances, the historical unlocking duration being the time taken from the vehicle being unlocked without a sense of touch to the user opening the door, and the historical unlocking distance being the distance from the mobile terminal to the vehicle when the vehicle is unlocked without a sense of touch; 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 multiple preset unlocking data intervals, each of the unlocking data intervals including mutually corresponding unlocking time intervals and unlocking distance intervals; The local unlocking distance calibration value and RSSI calibration value are adjusted according to the probability distribution, so as to unlock or lock the vehicle according to the adjusted unlocking distance calibration value and RSSI calibration value.

2. The calibration parameter adjustment method for Bluetooth senseless unlocking according to claim 1, characterized in that: Adjusting the local unlocking distance calibration value and RSSI calibration value according to the probability distribution includes: Obtaining a preset unlocking data reference value, wherein the unlocking data reference value includes a corresponding unlocking time reference value and an unlocking distance reference value, wherein the unlocking distance reference value is a reference distance from the mobile terminal to the vehicle when the vehicle is unlocked without any sense, and the unlocking time reference value is a reference time taken by a user to open the door from a position at the unlocking distance reference value of the vehicle; The unlocking distance calibration value and the RSSI calibration value are adjusted according to a probability that the historical unlocking data is distributed below the unlocking data reference value and a probability that the historical unlocking data is distributed above the unlocking data reference value.

3. The calibration parameter adjustment method for Bluetooth senseless unlocking according to claim 2, characterized in that: According to the probability that the historical unlocking data is distributed below the unlocking data reference value and the probability that the historical unlocking data is distributed above the unlocking data reference value, adjusting the unlocking distance calibration value and the RSSI calibration value, including: Determining an unlocking data reference interval from the plurality of unlocking data intervals, the unlocking data reference interval comprising an unlocking distance interval where the unlocking distance reference value is located and an unlocking duration interval where the unlocking duration reference value is located; If the probability distribution is that the probability that the historical unlocking data is distributed below the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed 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 that the historical unlocking data is distributed above the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed below the unlocking data reference interval, the unlocking distance calibration value is lowered and the RSSI calibration value is increased.

4. The calibration parameter adjustment method for Bluetooth sensorless unlocking according to claim 3 is characterized in that: If the probability distribution is that the probability that the historical unlocking data is distributed below the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed above the unlocking data reference interval, then the unlocking distance calibration value is increased and the RSSI calibration value is decreased, including: If the probability distribution is that the probability that the historical unlocking data is 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 is that the probability that the historical unlocking data is distributed below the unlocking data reference interval is the largest and does not exceed the preset probability, and the probability that the historical unlocking data is distributed within the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed above the unlocking data reference interval, then 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 is that the probability that the historical unlocking data is distributed in the unlocking data reference interval is the largest and does not exceed the preset probability, and the probability that the historical unlocking data is distributed below the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed above the unlocking data reference interval, then 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 values ​​of the first preset distance, the second preset distance and the third preset distance decrease in sequence, and the values ​​of the first preset RSSI value, the second preset RSSI value and the third preset RSSI value decrease in sequence.

5. The calibration parameter adjustment method for Bluetooth senseless unlocking according to claim 4, characterized in that: If the probability distribution is that the probability that the historical unlocking data is distributed above the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed below the unlocking data reference interval, then lowering the unlocking distance calibration value and raising the RSSI calibration value, including: If the probability distribution 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, then the unlocking distance calibration value is adjusted down by the third preset distance, and the RSSI calibration value is adjusted up by the third preset RSSI value; If the probability distribution is that the probability that the historical unlocking data is distributed above the unlocking data reference interval is the largest and exceeds the preset probability, and the probability that the historical unlocking data is distributed within the unlocking data reference interval exceeds the probability that the historical unlocking data is distributed below the unlocking data reference interval, then the unlocking distance calibration value is adjusted down by the second preset distance, and the RSSI calibration value is adjusted up by the second preset RSSI value; If the probability distribution is that the probability that the historical unlocking data is distributed above the unlocking data reference interval is the largest and exceeds the preset probability, the unlocking distance calibration value is adjusted down by the first preset distance, and the RSSI calibration value is adjusted up by the first preset RSSI value.

6. The calibration parameter adjustment method for Bluetooth sensorless unlocking according to claim 1, characterized in that: Obtain the historical unlocking distances at the multiple historical moments, including: Get the preset adult walking speed and door opening time; The historical unlocking distance at each historical moment is obtained by subtracting the door opening time from the historical unlocking time at each historical moment and multiplying the result by the adult walking speed.

7. The calibration parameter adjustment method for Bluetooth sensorless unlocking according to claim 6, characterized in that: After acquiring the historical unlocking data at the plurality of historical moments, the method further includes: Get the preset maximum unlocking time; Determine whether the historical unlocking duration at each of the historical moments is greater than the maximum unlocking duration; In the historical unlocking data at the multiple historical moments, the historical unlocking durations and the corresponding historical unlocking distances that are greater than the maximum unlocking duration are filtered out.

8. A vehicle unlocking method, characterized in that: The method is applied to a vehicle end, and the vehicle end establishes a communication connection with a mobile terminal via Bluetooth. The method includes: Monitoring the current RSSI value of the mobile terminal; Obtaining an adjusted unlocking distance calibration value and an RSSI calibration value, wherein the adjusted unlocking distance calibration value and the RSSI calibration value are obtained by the calibration parameter adjustment method for Bluetooth sensorless unlocking according to any one of claims 1 to 7; 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 from the mobile terminal to 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; 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 based on the current RSSI value; when the current distance is greater than or equal to the adjusted unlocking distance calibration value, the vehicle is locked.

9. A calibration parameter adjustment device for Bluetooth sensorless unlocking, characterized in that: The device is applied to a vehicle end, and the vehicle end establishes a communication connection with a mobile terminal via Bluetooth. The device includes: A historical data acquisition module, used to acquire historical unlocking data at multiple historical moments, wherein the historical unlocking data includes corresponding historical unlocking durations and historical unlocking distances, wherein the historical unlocking duration is the time taken from the vehicle being unlocked without a sense of touch 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 a sense of touch; A historical data statistics module, used to calculate the probability distribution of the historical unlocking data at each of the historical moments in a plurality of preset unlocking data intervals, with the historical unlocking data at each of the historical moments as a unit, each of the unlocking data intervals including mutually corresponding unlocking time intervals and unlocking distance intervals; The calibration parameter adjustment module is used to adjust the local unlocking distance calibration value and 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 RSSI calibration value.

10. A vehicle unlocking device, characterized in that: The device is applied to a vehicle end, and the vehicle end establishes a communication connection with a mobile terminal via Bluetooth. The device includes: An RSSI monitoring module is used to monitor the current RSSI value of the mobile terminal; A calibration parameter acquisition module, used to obtain an adjusted unlocking distance calibration value and an RSSI calibration value, wherein the adjusted unlocking distance calibration value and the RSSI calibration value are obtained by the calibration parameter adjustment method for Bluetooth sensorless unlocking according to any one of claims 1 to 7; A sensorless unlocking module, configured to calculate the current distance from the mobile terminal to the vehicle according to the current RSSI value if the current RSSI value gradually increases and when the current RSSI value is greater than or equal to the adjusted RSSI value; and unlock the vehicle when the current distance is less than or equal to the adjusted unlocking distance calibration value; The contactless unlocking module is also used to calculate the current distance from the mobile terminal to the vehicle according to the current RSSI value if the current RSSI value gradually decreases, 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.

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