Digital key device self-calibration method and digital key device

Abstract

The present invention provides a digital key device self-calibration method and a digital key device, wherein the calibration parameters are divided into multiple gears according to the data intensity variation interval at the digital key device end; and the gear of the calibration parameters sent to the vehicle end is adjusted according to the set calibration strategy, until the digital key device end normally performs the corresponding operation function on the vehicle end, and the data of the calibration parameters of the corresponding gear is written into the vehicle end. That is, the present invention designs a link that allows users to perform parameter calibration by themselves, so that the calibration parameters of the new mobile phone are written to the vehicle end after obtaining the appropriate value range, so as to automatically achieve the purpose of normalizing the calibration parameters of the new mobile phone to the standard sample mobile phone.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a digital key device self-calibration method and a digital key device. Background Art

[0002] The existing smart key system PEPS (Passive Entry & Passive Start), also known as the keyless start system, is mainly composed of an on-board communication and control system and a digital key carried by the user for legal identity identification. When the user enters the detection range of the vehicle with the smart key, the user only needs to directly pull the outer opening handle on the door or press the unlock button on the door handle, and the vehicle will actively identify and authenticate the legitimacy of the smart key. If the authentication is successful, the vehicle will release the anti-theft and unlock the door; when the user enters the vehicle, he only needs to press the start button, and the vehicle will actively identify and authenticate the smart key inside the vehicle. If the authentication is successful, the vehicle will release the engine anti-theft and other anti-theft devices, such as the electronic steering shaft lock, and the user can directly start or power on the vehicle. The benefit of equipping the vehicle with a smart key system is that it eliminates the tedious operation of finding and operating the key when the user uses the vehicle, thereby improving the convenience of vehicle use. However, before using the smart key to operate the vehicle, the smart key needs to be calibrated.

[0003] like Figure 1 As shown, the existing common digital key mobile phone calibration scheme generally includes the following steps:

[0004] (1) First calibrate the standard sample mobile phone, and then calibrate the difference data between other mobile phones and the standard sample mobile phone;

[0005] (2) After the calibration results come out, the different mobile phone parameters are uploaded to the cloud through certain means;

[0006] (3) The user uploads the mobile phone number to the cloud when using the mobile phone;

[0007] (4) When the user's mobile phone is in use, the cloud sends the corresponding difference mobile phone parameters to the user's mobile phone according to the uploaded mobile phone model, so that the user's mobile phone is normalized to the standard sample mobile phone;

[0008] (5) The user’s mobile phone sends relevant parameters to the vehicle.

[0009] However, in actual applications, it is found that there are a large number of uncalibrated mobile phone models on the market, and new mobile phone models will be continuously released. The calibration data of these mobile phones are updated in the above manner, which will bring a lot of workload and a lot of subsequent maintenance costs. Summary of the invention

[0010] The purpose of the present invention is to provide a digital key device self-calibration method and a digital key device to solve the problem that new models of mobile phones continue to appear, and they all need to be compared with standard sample mobile phones to update calibration data, which will bring a lot of workload and a lot of subsequent maintenance costs.

[0011] In order to solve the above technical problems, the present invention provides a digital key device self-calibration method, comprising:

[0012] On the digital key device side, the calibration parameters are divided into multiple levels according to the data strength change range; and,

[0013] The gear position of the calibration parameter sent to the vehicle end is adjusted according to the set calibration strategy until the digital key device end normally executes the corresponding operation function of the vehicle end, and the data of the calibration parameter of the corresponding gear position is written into the vehicle end.

[0014] Optionally, in the digital key device self-calibration method, the calibration strategy is formulated separately according to different operating functions of the digital key device end for the vehicle end.

[0015] Optionally, in the self-calibration method of the digital key device, for the button unlocking function, the calibration strategy is to adjust the gear position of the calibration parameters sent to the vehicle at a set distance from the outside of the main driver's door.

[0016] Optionally, in the self-calibration method of the digital key device, for the automatic approach unlocking and automatic distance unlocking functions, the calibration strategy is that a handheld device approaches the main driver's door along a set path, detects the unlocking distance of the calibration parameters at each gear, and when unlocking at the main driver's door, saves the data of the current gear of the calibration parameters.

[0017] Optionally, in the digital key device self-calibration method, the calibration parameters include Bluetooth broadcast signal strength.

[0018] Optionally, in the digital key device self-calibration method, before adjusting the gear position of the calibration parameters sent to the vehicle end according to the set calibration strategy, the digital key device self-calibration method also includes: starting a calibration window at the digital key device end, and triggering the vehicle end to turn off the normal positioning function of the keyless start system by starting the calibration window.

[0019] The present invention also provides a digital key device, the digital key device comprising:

[0020] A setting module, the setting module is used to input a plurality of gears of the calibration parameters divided according to the data intensity variation interval;

[0021] A selection module, the selection module is used to select the gear position of the calibration parameter sent to the vehicle end; and

[0022] A writing module, which is used to write the calibration parameter data of the corresponding gear into the vehicle end after the selection module sends the calibration parameter to the vehicle end, if the corresponding operation function of the vehicle end is performed normally. In the digital key device, the calibration parameter includes the Bluetooth broadcast signal strength.

[0023] Optionally, in the digital key device, the selection module has a start calibration window, and the start calibration window is used to trigger the vehicle end to shut down the normal positioning function of the keyless start system.

[0024] Optionally, in the digital key device, the digital key device is one of a smart phone, a smart watch and a smart bracelet.

[0025] In summary, the present invention provides a digital key device self-calibration method and a digital key device, the digital key device comprising: a setting module, a selection module and a writing module, the setting module is used to input a plurality of gears of calibration parameters divided according to a data strength variation interval; the selection module is used to select the gear of the calibration parameters sent to the vehicle end; the writing module is used to write the data of the calibration parameters of the corresponding gear into the vehicle end after the selection module sends the calibration parameters to the vehicle end, if the corresponding operation function of the vehicle end is normally executed. Thus, the calibration parameters can be divided into multiple gears according to the data strength variation interval at the digital key device end; and the gear of the calibration parameters sent to the vehicle end is adjusted according to the set calibration strategy until the corresponding operation function of the vehicle end is normally executed by the digital key device end. That is, the present invention designs a link that allows users to perform parameter calibration by themselves, so that the calibration parameters of the new mobile phone are written to the vehicle end after obtaining a suitable numerical range, so as to automatically achieve the purpose of normalizing the calibration parameters to the standard sample mobile phone. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the process of updating the calibration data of an existing digital key phone;

[0027] Figure 2 A flowchart of a self-calibration method for a digital key device provided by an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of setting the calibration parameter gear position in an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of planning for setting a motion path in an embodiment of the present invention;

[0030] Figure 5 Schematic diagram of interaction between a digital key device and a vehicle in an embodiment of the present invention;

[0031] Figure 6 4 is a block diagram of the composition of a digital key device in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, advantages and features of the present invention clearer, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In addition, the structure shown in the drawings is often a part of the actual structure. In particular, the emphasis of each drawing is different, and sometimes different scales are used.

[0033] like Figure 2 Please combine Figure 5 , an embodiment of the present invention provides a digital key device self-calibration method, comprising the following steps:

[0034] S11, dividing the calibration parameters into multiple levels according to the data strength change range at the digital key device end;

[0035] S12, adjusting the gear position of the calibration parameters sent to the vehicle according to the set calibration strategy, until the digital key device end normally executes the corresponding operation function on the vehicle end, and writing the data of the calibration parameters of the corresponding gear position into the vehicle end.

[0036] That is, the digital key device self-calibration method provided in the embodiment of the present invention is designed to allow users to perform parameter calibration by themselves, so that the calibration parameters of the new mobile phone can be written to the vehicle end after obtaining the appropriate numerical range, so as to automatically achieve the purpose of normalizing the calibration parameters of the new mobile phone to the standard sample mobile phone.

[0037] It should be noted that in the present application, the digital key device is not limited to a smart phone, for example, it can also be a smart device such as a smart watch, a smart bracelet, etc. that can communicate wirelessly with the vehicle.

[0038] The calibration parameters are divided into multiple levels according to the data intensity variation range, and each level corresponds to a different data intensity. Figure 4As shown, the calibration parameters are divided into 10 gears according to the data intensity change interval, and the default selection is gear 0, which can be the gear with the highest data intensity or the lowest data intensity, or the gear with medium data intensity. If gear 0 is the gear with the highest data intensity, when adjusting the gear, you can start with gear 0 and reduce the gears in sequence; if gear 0 is the gear with the lowest data intensity, when adjusting the gear, you can start with gear 0 and increase the gears in sequence; if gear 0 is the gear with the medium data intensity, when adjusting the gear, you can first increase the gears in sequence and then reduce the gears in sequence, or you can first reduce the gears in sequence and then increase the gears in sequence. Therefore, it can be understood that the specific setting of the gears of the calibration parameters and the specific selection rules do not constitute a limitation to the present application, and can be set and selected according to the actual application situation.

[0039] In this embodiment, the calibration strategy can be formulated according to the different operation functions of the digital key device end for the vehicle end. For the keyless start system, the common functions of the digital key for the vehicle include: key unlocking function, automatic approach unlocking and automatic distance locking.

[0040] For the button unlocking function, the calibration strategy is to adjust the gear position of the calibration parameter sent to the vehicle at a set distance from the outside of the main driver's door. For example, the value can be set up or down at a distance of about 1m outside the main driver's door to determine whether it can be unlocked. If it can be unlocked, the corresponding gear position value is saved.

[0041] For the automatic approach unlocking and automatic distance unlocking functions, the calibration strategy is that the handheld device approaches the main driver's door along a set path, detects the unlocking distance when the calibration parameters are in each gear, and when unlocking at the main driver's door, saves the data of the current gear of the calibration parameters. That is, for complex automatic approach unlocking and automatic distance unlocking, the user's self-calibration process can be further refined and defined, for example, along the Figure 4 The set path shown in the figure starts from 10m and approaches the main driver's door. Starting from the first gear, the vehicle unlocking distance is observed for each gear. When the main driver's door is unlocked, the data of the calibration parameter in the current gear is saved and written to the vehicle end.

[0042] In order to prevent the normal positioning function of the vehicle from interfering with the calibration process, in this embodiment, preferably, before adjusting the gear position of the calibration parameters sent to the vehicle end according to the set calibration strategy, the digital key device self-calibration method further includes: starting a calibration window at the digital key device end, and triggering the vehicle end to turn off the normal positioning function of the keyless start system through the starting calibration window. Figure 5As shown, click the start calibration window on the mobile phone to start self-calibration, triggering the vehicle to close normal positioning functions such as the unlocking and door opening strategy. After the calibration is completed, the vehicle restarts the unlocking and door opening strategy and other normal positioning functions.

[0043] From the above description, it can be seen that the digital key device self-calibration method provided in this embodiment has the following specific implementation measures:

[0044] (1) In the software code of the digital key system at the vehicle end, a data channel for writing calibration parameter data at the digital key device end is preset;

[0045] (2) Quantify the range of calibration data;

[0046] (3) The data adjustment method is specified in the specification, and a window is reserved on the mobile phone for adjustment;

[0047] (4) Standardize the gear adjustment strategy based on the different operating functions of the digital key on the vehicle side.

[0048] In view of this, an embodiment of the present invention further provides a digital key device, which is one of a smart phone, a smart watch and a smart bracelet.

[0049] like Figure 6 As shown, the digital key device includes:

[0050] A setting module, the setting module is used to input a plurality of gears of the calibration parameters divided according to the data intensity variation interval;

[0051] A selection module, the selection module is used to select the gear position of the calibration parameter sent to the vehicle end; and

[0052] A writing module is used to write the calibration parameter data of the corresponding gear into the vehicle end after the selection module sends the calibration parameter to the vehicle end, if the corresponding operation function of the vehicle end is performed normally.

[0053] The setting module may be an external port or a human-computer interaction interface. After the setting module is used to set a plurality of gears, the set plurality of gears may be displayed in the form of a window so that the user can adjust the gears.

[0054] In addition, the selection module may have a start calibration window, and the start calibration window is used to trigger the vehicle end to shut down the normal positioning function of the keyless start system. For the specific description of the start calibration window, please refer to the previous text and will not be repeated here.

[0055] In addition, the writing module may have a trigger window. After debugging multiple gears of the calibration parameters respectively and saving the gear data that meets the strategy, the corresponding data can be written to the vehicle end by clicking the trigger window to complete the calibration of the new mobile phone.

[0056] In the embodiment of the present invention, the calibration parameter may include, for example, the strength of the Bluetooth broadcast signal (RSSI). For a keyless start system, the digital key may be located by measuring the RSSI strength. Generally, the following method may be used to measure the RSSI strength:

[0057] (1) The RSSI of the connection channel between the smart device (such as a smart phone, smart bracelet, smart watch, etc.) and the vehicle-side Bluetooth primary node is measured, and the RSSI of the connection channel between the smart device and the vehicle-side Bluetooth secondary node is measured. The RSSI measurement values ​​of the primary and secondary nodes are combined to locate the smart device.

[0058] (2) The RSSI measurement of the connection channel between the smart device and the vehicle-side Bluetooth primary node, as well as the RSSI measurement of the broadcast sent by the vehicle-side Bluetooth secondary node to the smart device, are combined to form the RSSI measurement values ​​of the primary and secondary nodes for locating the smart device.

[0059] Therefore, when the calibration parameter is the RSSI value, the data corresponding to each level includes the wireless signal strength values ​​of the primary node and the secondary node, and the wireless signal strength values ​​of the primary node and the secondary node are different.

[0060] In some other embodiments, the calibration parameters may also be signal values ​​such as radio frequency signals and ZigBee signals that can be used for wireless communication between the smart device and the vehicle.

[0061] In summary, the digital key device self-calibration method and digital key device provided by the present invention, the digital key device includes: a setting module, a selection module and a writing module, the setting module is used to input a plurality of gears of calibration parameters divided according to the data strength variation interval; the selection module is used to select the gear of the calibration parameters sent to the vehicle end; the writing module is used to write the data of the calibration parameters of the corresponding gear to the vehicle end after the selection module sends the calibration parameters to the vehicle end, if the corresponding operation function of the vehicle end is normally executed. Thus, the calibration parameters can be divided into multiple gears according to the data strength variation interval at the digital key device end; and the gear of the calibration parameters sent to the vehicle end is adjusted according to the set calibration strategy until the corresponding operation function of the vehicle end is normally executed by the digital key device end. That is, the present invention designs a link that allows users to perform parameter calibration by themselves, so that the calibration parameters of the new mobile phone are written to the vehicle end after obtaining a suitable numerical range, so as to automatically achieve the purpose of normalizing the calibration parameters to the standard sample mobile phone.

[0062] In addition, it should be recognized that although the present invention has been disclosed as a preferred embodiment, the above embodiment is not intended to limit the present invention. For any technician familiar with the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or modified into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still belongs to the scope of protection of the technical solution of the present invention.

Claims

1. A digital key device self-calibration method, characterized in that: include: In the software code of the digital key system on the vehicle side, a data channel for writing calibration parameter data on the digital key device side is preset; A calibration parameter adjustment window is set on the digital key device end, so that the user can divide the calibration parameters into multiple levels according to the data strength change interval through the calibration parameter adjustment window; and, After the user adjusts the gear position of the calibration parameters sent to the vehicle end according to the set calibration strategy, if the digital key device end performs the corresponding operation function on the vehicle end normally, the data of the calibration parameters of the corresponding gear position will be written into the vehicle end through the preset data channel, wherein the calibration strategy is formulated by the user according to the different operation functions of the digital key device end on the vehicle end.

2. The digital key device self-calibration method according to claim 1, characterized in that: For the button unlocking function, the calibration strategy is to adjust the gear position of the calibration parameter sent to the vehicle at a set distance from the outside of the main driver's door.

3. The digital key device self-calibration method according to claim 1, characterized in that: For the automatic approach unlocking function, the calibration strategy is that the handheld device approaches the main driver's door along a set path, detects the unlocking distance of the calibration parameters at each gear, and when unlocking at the main driver's door, saves the data of the current gear of the calibration parameters.

4. The digital key device self-calibration method according to claim 1, characterized in that: The calibration parameters include Bluetooth broadcast signal strength.

5. The digital key device self-calibration method according to claim 1, characterized in that: Before adjusting the gear position of the calibration parameters sent to the vehicle end according to the set calibration strategy, the digital key device self-calibration method also includes: starting a calibration window on the digital key device end, and triggering the vehicle end to close the normal positioning function of the keyless start system by starting the calibration window.

6. A digital key device, characterized in that: The digital key device comprises: A setting module, the setting module is used for allowing a user to input a plurality of gears of calibration parameters divided according to a data intensity variation interval; A selection module, the selection module is used for allowing the user to adjust the gear of the calibration parameter sent to the vehicle end according to a set calibration strategy, the calibration strategy is formulated by the user according to different operation functions of the digital key device end for the vehicle end; and A writing module is used to write the calibration parameter data of the corresponding gear into a data channel preset on the vehicle end after the selection module sends the calibration parameter to the vehicle end, if the corresponding operation function on the vehicle end is executed normally.

7. The digital key device according to claim 6, characterized in that: The calibration parameters include Bluetooth broadcast signal strength.

8. The digital key device according to claim 6, characterized in that: The selection module has a start calibration window, and the start calibration window is used to trigger the vehicle end to close the normal positioning function of the keyless start system.

9. The digital key device according to claim 6, characterized in that: The digital key device is one of a smart phone, a smart watch and a smart bracelet.

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