Vehicle tire pressure sensor matching method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention provides a tire pressure sensor matching method and device of a vehicle, electronic equipment and a storage medium. In the matching process of a to-be-matched tire pressure sensor and a target tire, the tire state of the target tire is detected; under the condition that the tire state is a full gas state, acquiring a gas leakage signal generated by the to-be-matched tire pressure sensor in the deflation process of the target tire; and generating a position test signal of the to-be-matched tire pressure sensor based on the air leakage signal, and determining position information of the to-be-matched tire pressure sensor by using the position test signal, so as to establish a matching relationship between the to-be-matched tire pressure sensor and the target tire based on the position information. According to the application, the matching relationship between the to-be-matched tire pressure sensor and the target tire can be established on the basis of not needing tire pressure sensor matching equipment. And the matching simplicity and convenience of the tire pressure sensor are improved, the matching cost investment of the tire pressure sensor is effectively reduced, and popularization and landing application to common maintenance shops are facilitated.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of sensor matching technology, and in particular, to a vehicle tire pressure sensor matching method, device, electronic device, and storage medium. Background Art

[0002] In the related technology, when the vehicle's control module identifies and monitors the tire pressure sensor information of each tire, it is necessary to match the tire pressure sensor with the tire. The matching method is mostly the direct ID injection method, which must be completed through a handheld tire pressure matching device: first, use the handheld tire pressure matching device to complete the safety check of the body control module; then obtain the ID numbers of the four tire pressure sensors; finally, enter the four ID numbers in the handheld matching device, and then write these four ID numbers and their corresponding relationships with each tire into the body control module to complete the matching process.

[0003] However, in the related art, this tire pressure sensor matching method needs to rely on tire pressure matching equipment, which is less convenient and has high equipment cost. It is also not conducive to promotion and application in ordinary repair shops, and needs to be solved urgently. Summary of the invention

[0004] The embodiments of the present application provide a vehicle tire pressure sensor matching method, device, electronic device and storage medium, aiming to improve the problem in related technologies that the tire pressure sensor matching process needs to rely on tire pressure matching equipment to complete, which is less simple and has high equipment cost investment, and is not conducive to promotion and application to ordinary repair shops.

[0005] The first aspect of the present application provides a vehicle tire pressure sensor matching method, comprising the following steps: during the matching process between the tire pressure sensor to be matched and the target tire, detecting the tire state of the target tire; when the tire state is a fully inflated state, obtaining a leakage signal generated by the tire pressure sensor to be matched during the deflation process of the target tire; generating a position test signal of the tire pressure sensor to be matched based on the leakage signal, and determining the position information of the tire pressure sensor to be matched using the position test signal, so as to establish a matching relationship between the tire pressure sensor to be matched and the target tire based on the position information.

[0006] Through the above technical means, the embodiment of the present application can generate a position test signal corresponding to the leakage signal generated by the tire pressure sensor during the deflation process of the target tire, and determine the position information of the tire pressure sensor to be matched according to the position test signal. As a result, the tire pressure sensor matching equipment is omitted, which greatly improves the simplicity of tire pressure sensor matching and can effectively reduce the investment in tire pressure sensor matching costs, which is helpful for promotion and implementation in ordinary repair shops.

[0007] Optionally, in an embodiment of the present application, the determining the position information of the to-be-matched tire pressure sensor by using the position test signal includes: sending the position test signal to a test device at a test position within a preset range of the target tire; receiving a position signal fed back by the test device, and determining the position information according to the position signal.

[0008] By the above technical means, the embodiment of the present application can generate a position test signal based on the rapid air leakage signal sent by the matching tire pressure sensor, and at the same time send the position test signal to a test device arranged beside the target tire. Thus, it can be determined which target tire the to-be-matched tire pressure sensor is installed on according to the rapid air leakage signal and the position signal fed back by the test device, which can simplify the matching device and operation while improving the accuracy of the matching relationship between the to-be-matched tire pressure sensor and the target tire.

[0009] Optionally, in an embodiment of the present application, the determining the position information according to the position signal includes: obtaining the intensity information and azimuth information of the position signal; obtaining the position information according to the intensity information and the azimuth information.

[0010] By the above technical means, the embodiment of the present application can calculate the position where the test device is located based on data such as the signal intensity and azimuth information of the position test signal included in the position signal fed back by the test device, and improve the accuracy of calculating the position information of the to-be-matched tire pressure sensor through the accuracy inherent in signal calculation.

[0011] Optionally, in an embodiment of the present application, the establishing the matching relationship between the to-be-matched tire pressure sensor and the target tire based on the position information includes: determining the identification information of the to-be-matched tire pressure sensor corresponding to the position information; establishing the matching relationship between the to-be-matched tire pressure sensor and the target tire based on the identification information of the to-be-matched tire pressure sensor and the identification information of the target tire.

[0012] By the above technical means, the embodiment of the present application can establish the matching relationship between the to-be-matched tire pressure sensor and the target tire with the unique identification information of each tire pressure sensor and the identification information of the target tire, ensuring that the tire pressure information of each target tire can be accurately displayed and alarmed to ensure driving safety.

[0013] Optionally, in an embodiment of the present application, it further includes: calculating the number of frames of the air leakage signal sent within a target time; determining that the matching is successful when the number of frames reaches a preset number of frames, and writing the matching relationship into the control module of the vehicle, otherwise generating a matching failure flag to give a failure prompt to the user.

[0014] Through the above technical means, the embodiments of the present application can limit the number of frames of the air leakage signal sent by the tire pressure sensor and the sending time according to the target time and the preset number of frames, so as to ensure that the received tire pressure information is accurate, and further ensure the accuracy of establishing the matching relationship between the to-be-matched tire pressure sensor and the target tire, so that the vehicle can accurately obtain the tire pressure information during actual application.

[0015] The embodiments of the second aspect of the present application provide a tire pressure sensor matching device for a vehicle, including: a detection module, configured to detect the tire state of the target tire during the matching process between the to-be-matched tire pressure sensor and the target tire; an acquisition module, configured to acquire the air leakage signal generated by the to-be-matched tire pressure sensor during the deflation process of the target tire when the tire state is a full-air state; a matching module, configured to generate a position test signal based on the air leakage signal, and use the position test signal to determine the position information of the to-be-matched tire pressure sensor, so as to establish a matching relationship between the to-be-matched tire pressure sensor and the target tire based on the position information.

[0016] Through the above technical means, the embodiments of the present application can generate a position test signal corresponding to the air leakage signal generated by the tire pressure sensor during the deflation process of the target tire, and determine the position information of the to-be-matched tire pressure sensor according to the position test signal. Thus, the tire pressure sensor matching device is omitted, which greatly improves the simplicity of tire pressure sensor matching, and at the same time can effectively reduce the investment in the cost of tire pressure sensor matching, which helps to promote and implement the application in ordinary repair shops.

[0017] Optionally, in an embodiment of the present application, the matching module includes: a sending unit, configured to send the position test signal to a test device at a test position within a preset range of the target tire; a receiving unit, configured to receive the position signal fed back by the test device, and determine the position information according to the position signal.

[0018] Through the above technical means, the embodiments of the present application can generate a position test signal based on the rapid air leakage signal sent by the matching tire pressure sensor, and at the same time send the position test signal to the test device arranged beside the target tire. Thus, it can be determined which target tire the to-be-matched tire pressure sensor is installed on according to the rapid air leakage signal and the position signal fed back by the test device, which can simplify the matching device and operation, and improve the accuracy of the matching relationship between the to-be-matched tire pressure sensor and the target tire.

[0019] Optionally, in an embodiment of the present application, the receiving unit includes: an acquisition subunit, configured to acquire the intensity information and azimuth information of the position signal; a calculation subunit, configured to acquire the position information according to the intensity information and the azimuth information.

[0020] Through the above technical means, the embodiments of the present application can calculate the position where the test device is located based on data such as the signal strength and azimuth information of the position test signal included in the position signal fed back by the test device, and improve the accuracy of calculating the position information of the tire pressure sensor to be matched through the accuracy inherent in signal calculation.

[0021] Optionally, in an embodiment of the present application, the matching module includes: a determining unit, configured to determine the identification information of the tire pressure sensor to be matched corresponding to the position information; a matching unit, configured to establish a matching relationship between the tire pressure sensor to be matched and the target tire based on the identification information of the tire pressure sensor to be matched and the identification information of the target tire.

[0022] Through the above technical means, the embodiments of the present application can establish a matching relationship between the tire pressure sensor to be matched and the target tire with the identification information of each tire pressure sensor and the identification information of the target tire, ensuring that the tire pressure information of each target tire can be accurately displayed and alarmed to ensure driving safety.

[0023] Optionally, in an embodiment of the present application, it further includes: a calculating module, configured to calculate the number of frames of the air leakage signal sent within the target time; a writing module, configured to determine that the matching is successful when the number of frames reaches a preset number of frames, and write the matching relationship into the control module of the vehicle, otherwise generate a matching failure flag to give a failure prompt to the user.

[0024] Through the above technical means, the embodiments of the present application can impose certain restrictions on the number of frames and the sending time of the air leakage signal sent by the tire pressure sensor through the target time and the preset number of frames, so as to ensure that the received tire pressure information is accurate, and further ensure the accuracy of establishing the matching relationship between the tire pressure sensor to be matched and the target tire, and write the matching relationship into the control module of the vehicle, so that the vehicle can accurately obtain the tire pressure information during actual application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easier to understand from the following description of the embodiments in conjunction with the drawings, where:

[0026] Figure 1 It is a schematic diagram of the communication network and main node structure of an embodiment of the present application;

[0027] Figure 2 It is a flowchart of a method for matching a tire pressure sensor of a vehicle provided according to an embodiment of the present application;

[0028] Figure 3 It is a flowchart of a simple method for matching a tire pressure sensor of a vehicle provided by an embodiment of the present application;

[0029] Figure 4 It is a structural diagram of a device for matching tire pressure sensors of a vehicle provided by an embodiment of the present application;

[0030] Figure 5 It is a structural diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0031] In order to make the technical problems, technical solutions and beneficial effects solved by the present application clearer and more understandable, the present application will be further described in detail below in conjunction with 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.

[0032] Before explaining the method for matching tire pressure sensors of a vehicle in the embodiments of the present application, the communication network forms and main nodes involved in the embodiments of the present application will be explained first.

[0033] Currently, most automobiles are equipped with a tire pressure detection function. During the driving process of the vehicle, the driver can real-time understand the pressure and temperature of each tire. When the pressure or temperature exceeds the abnormal range, the system will automatically alarm to prompt the driver. In addition, when the tire pressure sensor fails or one or more sensors of the vehicle are lost (such as abnormal tire replacement), the system can also give an alarm message to prompt the driver to re-match and learn the tire pressure sensor.

[0034] Figure 1 It is a schematic diagram of the communication network and main node structure of an embodiment of the present application. As Figure 1 shown, in the present application, the communication network involved includes but is not limited to nodes such as HU (Head Unit, multimedia host), BCM (Body Control Module, body control module), RFR (Radio Frequency Receiver, high-frequency receiver), PKE FOB (Passive Keyless Entry FOB, keyless entry system smart key), and TPMS Sensor (Tire Pressure Monitoring System Sensor, tire pressure monitoring system sensor).

[0035] In the present application, HU represents the multimedia host, which supports the setting and display of various functions on the central control screen of the vehicle, such as a page integrating functions such as tire pressure setting and display. When a button for functions such as tire pressure matching on the page is triggered, relevant commands are sent to the BCM through the CAN (Controller Area Network) bus, and the relevant execution status is displayed in real time;

[0036] BCM represents the Body Control Module, which supports the functions of keyless entry and push-button start system and tire pressure control function, connects to a multi-channel low-frequency antenna (an antenna operating in the low-frequency band (30 - 300KHz)), supports the trigger drive of LF signals (low-frequency signals, such as position test signals), and is used to find the PKE FOB with low-frequency signals;

[0037] RFR represents the High-Frequency Receiver, which is used in the embodiment of the present application to receive RF signals (radio frequency signals, such as position signals) sent by the PKE FOB and tire pressure sensors, and forward the information to the BCM through the CAN bus;

[0038] PKE FOB represents the intelligent key of the vehicle keyless entry system, which supports the reception of LF signals and the transmission of RF signals. After receiving the LF signal, the PKE FOB feeds back information such as the azimuth intensity of the received LF signal in a radio frequency manner, and is used for the BCM to locate the position of the PKE FOB;

[0039] TPMS Sensor represents the Tire Pressure Monitoring System Sensor, abbreviated as the tire pressure sensor, which can send information such as the pressure and temperature of each tire to the RFR, and then forward it to the BCM and HU, and is used for related functions such as tire pressure alarm.

[0040] Among them, the tire pressure sensor and RFR should support the transmission of the following signals or messages:

[0041] Normal radio frequency information frame, which is mainly used for RF data sent regularly during normal operation;

[0042] The frame format can but is not limited to be expressed as follows:

[0043] 0xFF + 0xFE + TYPE + SID0 + SID1 + SID2 + SID3 + PRESS + TEMPERATURE + STATUS + CRC8; Table 1 is the frame format description table of an embodiment of the present application, which can but is not limited to be expressed as follows:

[0044] Table 1

[0045]

[0046]

[0047] A method for matching a tire pressure sensor of a vehicle provided by an embodiment of the present application includes: during the matching process of the tire pressure sensor to be matched and the target tire, detecting the tire state of the target tire; in the case where the tire state is a full-air state, obtaining a leakage signal generated by the tire pressure sensor to be matched during the deflation process of the target tire; generating a position test signal for the tire pressure sensor to be matched based on the leakage signal, and using the position test signal to determine the position information of the tire pressure sensor to be matched, so as to establish a matching relationship between the tire pressure sensor to be matched and the target tire based on the position information.

[0048] In the embodiment of the present application, the position information of the sensor to be matched can be determined by generating a position test signal only through the leakage signal sent by the tire pressure sensor, and then a matching relationship between the tire pressure sensor to be matched and the target tire is established. There is no need for a tire pressure sensor matching device, which greatly improves the simplicity of tire pressure sensor matching and can effectively reduce the input of tire pressure sensor matching costs, contributing to the promotion and implementation in ordinary repair shops.

[0049] Embodiment 1

[0050] An embodiment of the present application provides a method for matching a tire pressure sensor of a vehicle. Please refer to Figure 2 , including the following steps:

[0051] S210: During the matching process of the tire pressure sensor to be matched and the target tire, detecting the tire state of the target tire;

[0052] S220: In the case where the tire state is a full-air state, obtaining a leakage signal generated by the tire pressure sensor to be matched during the deflation process of the target tire;

[0053] S230: Generating a position test signal for the tire pressure sensor to be matched based on the leakage signal, and using the position test signal to determine the position information of the tire pressure sensor to be matched, so as to establish a matching relationship between the tire pressure sensor to be matched and the target tire based on the position information.

[0054] It can be understood that a vehicle can monitor the states of different tires through different tire pressure sensors, and can understand the pressure, temperature and other states of each tire in real time. When the pressure or temperature exceeds the abnormal range, the vehicle can automatically alarm to prompt the driver. During monitoring, the tire pressure sensors corresponding to each tire are different. When a tire pressure sensor fails or one or more sensors of the vehicle are lost (such as the tires are abnormally swapped), the relevant system of the vehicle will give an alarm message to prompt the driver to re-match and learn the tire pressure sensor. The tire pressure sensor to be matched can be understood here as a tire pressure sensor that has been installed on the target tire but has not yet established a corresponding matching relationship with the target tire on the vehicle control system. The target tire can be understood here as the tire corresponding to the installation of the tire pressure sensor to be matched.

[0055] In some embodiments, during the matching process between the to-be-matched tire pressure sensor and the target tire, the present application can generate a position test signal based on the air leakage signal generated during the process of the tire deflating from a fully inflated state, and then determine the position information of the to-be-matched tire pressure sensor according to the position test signal, that is, on which target tire the to-be-matched tire pressure sensor is located, so as to establish a matching relationship between the to-be-matched tire pressure sensor and the target tire.

[0056] Among them, the matching process between the to-be-matched tire pressure sensor and the target tire can be understood as a process of re-corresponding and writing the to-be-matched tire pressure sensor and the target tire into the vehicle control module in the factory setting or in the case of tire pressure sensor failure, loss of one or more vehicle sensors, etc.; establishing a matching relationship between the to-be-matched tire pressure sensor and the target tire here not only refers to corresponding and matching the to-be-matched tire pressure sensor and the target tire, but also includes establishing a matching relationship between the to-be-matched tire pressure sensor and the target tire in the vehicle controller. Thus, the vehicle can monitor the state of the corresponding target tire through the tire pressure sensor.

[0057] It should be noted that the fully inflated state in the embodiments of the present application does not mean that the air pressure in the target tire must be 100%, but refers to a certain air pressure state that can cause the tire pressure sensor to emit a rapid air leakage signal when the target tire deflates from this fully inflated state, for example, 80% - 100%, etc., which is convenient for matching the tire pressure sensor. The fully inflated state in the actual application process can be set or adjusted by those skilled in the art according to the actual situation. For example, the air pressure in the tire reaches 90% and that's okay.

[0058] Before obtaining the air leakage signal generated by the to-be-matched tire pressure sensor during the deflation of the target tire, the embodiments of the present application can install the to-be-matched tire pressure sensor on the target tire, and then install the target tire on the corresponding wheel hub, which helps to ensure that the to-be-matched tire pressure sensor can match the correct tire position and the position of the tire on the vehicle, and avoid misidentifying the target tire corresponding to the to-be-matched tire pressure sensor or the position of the target tire on the vehicle when monitoring the tire state.

[0059] Next, the embodiments of the present application can deflate the fully inflated tire, which can activate the rapid air leakage alarm function. At the same time, the user, maintenance personnel, etc. can activate the simple matching function of the tire pressure sensor on the vehicle's central control screen. Thus, when the to-be-matched tire pressure sensor detects that the tire is leaking air, it will immediately start generating a rapid air leakage alarm signal, that is, the air leakage signal in the embodiments of the present application, so as to generate a position test signal based on the rapid air leakage alarm signal.

[0060] For example, the tire pressure sensor to be matched can send a rapid air leakage signal to the BCM. After the BCM obtains the air leakage signal generated by the tire pressure sensor to be matched during the deflation process of the target tire, it will trigger the LF antenna and then send out a position test signal to determine the position information of the tire pressure sensor to be matched by using the position test signal, thereby determining which tire pressure sensor installed on the target tire is the tire pressure sensor to be matched, and thus establishing a matching relationship between the tire pressure sensor to be matched and the target tire.

[0061] In the embodiment of the present application, a position test signal can be generated corresponding to the air leakage signal generated by the tire pressure sensor to be matched during the deflation process of the target tire, so as to determine the position information of the tire pressure sensor to be matched according to the position test signal. Thus, the tire pressure sensor matching device is omitted, greatly improving the simplicity of tire pressure sensor matching while effectively reducing the input cost of tire pressure sensor matching, which helps to promote and implement the application in ordinary repair shops.

[0062] Step S230 includes sending a position test signal to a test device at a test position within a preset range of the target tire; receiving the position signal fed back by the test device, and determining the position information according to the position signal.

[0063] In the actual execution process, when the present application generates a position test signal based on the air leakage signal to determine the position information of the tire pressure sensor to be matched, it may, but is not limited to, sending the position test signal to a test device at a test position within a preset range of the target tire, and then determining the position information of the tire pressure sensor to be matched according to the position signal fed back by the test device in response to the position test signal.

[0064] Herein, the preset range can be understood as a pre-set boundary (area) for limiting the test position of the test device. For example, the test position of the test device needs to be within a circular range with a radius of 30 cm centered on the contact position between the target tire and the vehicle. Specifically, it can be set or adjusted by those skilled in the art according to the actual situation. Only exemplary descriptions are given in the embodiment of the present application, without specific limitations.

[0065] In some application scenarios, the tire sensor can send a rapid air leakage alarm signal to the BCM of the vehicle, but there is only the signal without specific position information. In order to ensure the accuracy of the position information of the tire pressure sensor to be matched and then match the tire pressure sensor and the target tire, the embodiment of the present application can further improve the accuracy of the position information of the tire pressure sensor to be matched through the test device.

[0066] Exemplarily, to simplify the matching process of the tire pressure sensor to be matched to the greatest extent and reduce the investment in additional costs, the present application may, but is not limited to, use the PKE FOB (Passive Keyless Entry System Smart Key) of the vehicle where the target tire is located as a test device, and determine the position information of the tire pressure sensor to be matched through the information interaction between the PKE FOB, the tire pressure sensor to be matched, and the BCM.

[0067] Specifically, after the user or maintenance personnel start the vehicle using the PKE FOB of the vehicle where the target tire is located, the present application embodiment may place the PKE FOB beside the target tire corresponding to the tire pressure sensor to be matched. Thereby, the safety and legality of vehicle startup can be ensured through the PKE FOB, and unauthorized personnel are prevented from illegally matching the tire pressure sensor. Further, placing the PKE FOB beside the target tire corresponding to the tire pressure sensor to be matched can further ensure that the tire pressure sensor to be matched can be matched to the correct target tire.

[0068] After the tire pressure sensor to be matched sends a rapid air leakage signal to the BCM, the BCM can trigger the LF antenna to generate an LF signal (position test signal) and send the LF signal to the PKE FOB of the vehicle where the target tire is located. After receiving the LF signal, the PKE FOB generates a corresponding RF signal and feeds it back to the BCM. Herein, the RF signal can be understood as the position signal fed back by the test device in the embodiments of the present application.

[0069] Thus, after receiving the rapid air leakage signal and the RF signal (position signal) fed back by the PKE FOB, the BCM can determine the position of the PKE FOB through the RF signal. Combining the feature that the PKE FOB is placed beside the target tire corresponding to the tire pressure sensor to be matched, the position information of the target tire (the position information here is relative to the entire vehicle) can be obtained. Since the tire pressure sensor to be matched is installed on the target tire, the position information of the tire pressure sensor to be matched (the position information here is relative to all tires) can be further determined, that is, on which target tire the tire pressure sensor to be matched is installed, and then the matching relationship between the tire pressure sensor to be matched and the target tire is established.

[0070] The present application embodiment may, while generating a position test signal based on the air leakage signal sent by the matching tire pressure sensor, send the position test signal to the test device arranged beside the target tire. Thereby, it can be determined on which target tire the tire pressure sensor to be matched is installed according to the air leakage signal and the position signal fed back by the test device, and the accuracy of the matching relationship between the tire pressure sensor to be matched and the target tire can be improved while omitting the matching device and simplifying the operation.

[0071] Optionally, in an embodiment of the present application, determining the position information according to the position signal includes: obtaining the intensity information and azimuth information of the position signal; and obtaining the position information according to the intensity information and azimuth information.

[0072] In some embodiments, when determining the position information of the tire pressure sensor to be matched according to the position signal fed back by the test device, the position information of the tire pressure sensor to be matched can be determined by, but not limited to, the intensity information and azimuth information of the position signal.

[0073] For example, after the PKE FOB receives the LF signal (position test signal), it generates an RF signal (position signal) and sends it to the BCM. Among them, the RF signal contains information such as the intensity information and azimuth information of the LF signal received by the test device. After receiving the RF signal, the BCM calculates the position where the PKE FOB is located according to data such as the signal intensity and azimuth information of the LF signal in the RF signal, so as to determine the position information of the tire pressure sensor to be matched.

[0074] For example, when calculating the position where the PKE FOB is located according to the LF signal intensity in the RF signal, based on the characteristic that the signal intensity decays as the distance increases, it can be, but not limited to, representing the use of some known signal propagation models to establish the relationship between the signal intensity and the distance. Then, by measuring the LF signal intensities at multiple different position receiving points, the trilateration method or the multilateration method is used to determine the position of the device: First, input or directly query the theoretical intensity values of the LF signal at different distances in the BCM (which can be determined through experiments or theoretical models such as the free space propagation model, the log-distance path loss model, etc.); then, according to the LF signal intensity information in the received RF signal, compare with the theoretical model to estimate the distances from the device to each receiving point (which can be LF antennas at different positions on the vehicle); finally, use the trilateration method, that is, by solving the intersection points of three or more circles with the receiving points as the centers and the estimated distances as the radii, to determine the position of the PKE FOB.

[0075] Another example is that when calculating the position where the PKE FOB is located according to the azimuth information of the LF signal in the RF signal, the azimuth of the device relative to the receiving antenna in the BCM can be determined by, but not limited to, calculating the incident angle of the measured signal: First, according to the azimuth information in the received RF signal, use the BCM to determine the angle of the device relative to the receiving antenna in the BCM; then, combine information such as the vehicle coordinate system and the installation position and direction of the antenna in the BCM, and calculate the position of the PKE FOB through the triangulation principle. For example, given the position coordinates of two antennas and the angles of the device relative to these two antennas, the position coordinates of the PKE FOB can be obtained by solving the triangle.

[0076] Furthermore, the embodiment of the present application can also calculate the position where the PKE FOB is located by fusing the LF signal strength and azimuth information in the RF signal. For example, the signal strength and azimuth information are fused, different weights are assigned according to their reliability, and then the position of the device is solved by minimizing the error: First, a set of possible position coordinates of the PKE FOB are calculated according to the signal strength information, and another set of position coordinates are calculated according to the azimuth information. Then, weights are set for the signal strength and azimuth information respectively. The magnitude of the weight depends on the stability and accuracy of the signal. If the signal strength measurement is relatively accurate, a higher weight is assigned; if the azimuth information is more reliable, its weight is increased accordingly. Finally, the two sets of position coordinates are fused by weighted least squares to obtain the optimal PKE FOB position estimate.

[0077] The embodiment of the present application can calculate the position where the test device is located based on data such as the signal strength and azimuth information of the position test signal included in the position signal fed back by the test device, and improve the accuracy of calculating the position information of the tire pressure sensor to be matched through the precision inherent in signal calculation.

[0078] A method for matching a tire pressure sensor of a vehicle provided by an embodiment of the present application further includes: calculating the number of frames of the air leakage signal sent within a target time; in the case where the number of frames reaches a preset number of frames, determining that the matching is successful, and writing the matching relationship into the control module of the vehicle; otherwise, generating a matching failure flag to give a failure prompt to the user.

[0079] As a possible implementation manner, in order to ensure the effectiveness and accuracy of the matching relationship established between the tire pressure sensor to be matched and the target tire, the embodiment of the present application can also calculate the number of frames of the air leakage signal sent by the tire pressure sensor to be matched within a target time, that is, the number of frames sent. Only when the number of frames of the air leakage signal sent within the target time meets the preset number of frames, can the matching relationship between the tire pressure sensor to be matched and the target tire be successfully established and written into the control module of the vehicle; otherwise, the matching fails and the matching relationship between the tire pressure sensor to be matched and the target tire cannot be established.

[0080] Herein, the target time can be understood as a specific time range or time point. During this time, the number of frames of the air leakage signal sent needs to meet the preset number of frames to determine that the matching relationship between the to-be-matched tire pressure sensor and the target tire can be successfully established. For example, when the tire pressure is stable, the tire pressure sensor generally sends tire pressure signals periodically only when the vehicle speed is greater than 30 km / h, and the period is generally 60 seconds; when a rapid air leakage of the tire is detected, regardless of the current vehicle speed, air leakage signals will be continuously sent until 8 seconds after the air leakage stops, with a frame interval of 1 second; after the air leakage stops, it resumes to send tire pressure information periodically every 60 seconds. Then, the target time can be set as a certain time range or a certain time point within (1, 60) seconds. For example, the time range from the 10th second to the 30th second after the to-be-matched tire pressure sensor sends the first air leakage signal can be used to calculate the number of frames of the air leakage signal sent by the to-be-matched tire pressure sensor from the 10th second to the 30th second after the first air leakage signal is sent; another example is to directly use the time of the first air leakage signal as the reference and set the 30th second as the time point to calculate the number of frames of the air leakage signal sent by the to-be-matched tire pressure sensor from the first air leakage signal to the 30th second, etc.

[0081] The preset number of frames can be understood herein as a certain number of frames of the air leakage signal that the to-be-matched tire pressure sensor needs to send within the target time when the matching relationship between the to-be-matched tire pressure sensor and the target tire is successfully established. That is, only when the number of frames of the air leakage signal sent by the to-be-matched tire pressure sensor within the target time meets this number of frames can the matching relationship between the to-be-matched tire pressure sensor and the target tire be successfully established.

[0082] It should be noted that the specific target time and preset number of frames can both be set or adjusted by those skilled in the art according to the actual situation or experiments, etc. The embodiments of the present application are only for illustrative purposes and are not specifically limited.

[0083] For example, only when more than three frames of air leakage signals from the same to-be-matched tire pressure sensor are received within 30 seconds can the matching relationship between the to-be-matched tire pressure sensor and the target tire be successfully established, and then this matching relationship can be written into the vehicle's control module; if more than three frames of air leakage signals from the same to-be-matched tire pressure sensor are received after more than 30 seconds, that is, less than three frames of air leakage signals are received within 30 seconds, the matching relationship between the to-be-matched tire pressure sensor and the target tire cannot be established, nor can this matching relationship be written into the vehicle's control module.

[0084] To facilitate the user or maintenance personnel to timely understand the matching status of the to-be-matched tire pressure sensor, in an embodiment of the present application, when the to-be-matched tire pressure sensor fails to be successfully matched, a matching failure flag may be sent to the HU. After receiving the matching success flag sent by the BCM, the HU prompts a prompt message such as "The tire pressure sensor has not been successfully matched" on the central control screen; if the to-be-matched tire pressure sensor is successfully matched, a matching success flag may be sent to the HU. After receiving the matching success flag sent by the BCM, the HU prompts a prompt message such as "The tire pressure sensor has been successfully matched" on the central control screen, facilitating the user or maintenance personnel to perform the next operation.

[0085] In an embodiment of the present application, the number of leakage signal frames and the transmission time sent by the tire pressure sensor can be restricted by the target time and the preset number of frames, so as to ensure that the received tire pressure information is accurate, and further ensure the accuracy of the matching relationship established between the to-be-matched tire pressure sensor and the target tire. The matching relationship is written into the vehicle control module, so that the vehicle can accurately obtain the tire pressure information during actual application.

[0086] Step S230 includes establishing a matching relationship between the to-be-matched tire pressure sensor and the target tire based on the position information, including: determining the identification information of the to-be-matched tire pressure sensor corresponding to the position information; establishing a matching relationship between the to-be-matched tire pressure sensor and the target tire based on the identification information of the to-be-matched tire pressure sensor and the identification information of the target tire.

[0087] It can be understood that different to-be-matched tire pressure sensors have different ID codes. Therefore, when establishing a matching relationship between the to-be-matched tire pressure sensor and the target tire, in an embodiment of the present application, the identification information of the to-be-matched tire pressure sensor on the target tire beside the test device can be determined, and the to-be-matched tire pressure sensor and the corresponding target tire are matched according to the identification information, thereby establishing a matching relationship between the to-be-matched tire pressure sensor and the target tire. The identification information of the target tire can be understood here as the identification information established for the target tire when facilitating the establishment of the matching relationship between the to-be-matched tire pressure sensor and the target tire. For example, the left front tire, the left rear tire, etc. It should be noted that when the matching relationship between the to-be-matched tire pressure sensor and the target tire can be established according to the identification information of the to-be-matched tire pressure sensor, whether the identification information of the target tire needs to be set, adjusted or removed can be determined by those skilled in the art of the present technology. Only exemplary descriptions are made in this embodiment of the present application, without specific limitations.

[0088] For example, each tire pressure sensor to be matched has a unique ID code. In the tire pressure monitoring system settings interface of a vehicle, there is usually a function to manually enter the ID code. By manually associating the ID code of the sensor with the corresponding tire position in the vehicle system, the matching can be completed. For example, after installing the sensor on the left front tire, in the tire pressure monitoring settings of the in-vehicle central control screen, find the option for the left front tire and enter the ID code of the sensor to achieve the matching of the two.

[0089] In the embodiment of the present application, the matching relationship between the tire pressure sensor to be matched and the target tire can be established based on the unique identification information of each tire pressure sensor, ensuring that the tire pressure information of each target tire can be accurately displayed and alarmed to ensure driving safety.

[0090] Embodiment Two

[0091] Figure 3 is a flowchart of a simple matching method for a tire pressure sensor of a vehicle according to an embodiment of the present application. As Figure 3 shown, the specific process can but is not limited to being expressed as follows:

[0092] S1: Install the tire pressure sensor on any tire and inflate the tire to ensure sufficient tire pressure, so that the tire pressure sensor to be matched can emit a rapid air leakage flag during the subsequent air deflation process, and thus successfully match;

[0093] S2: Install the tire on the corresponding wheel hub to ensure that the tire pressure sensor to be matched can be matched to the correct tire;

[0094] S3: Start the vehicle using the vehicle's PKE FOB, thereby ensuring the legitimacy of the operator. Only personnel holding a legal PKE FOB can start the vehicle and have the operation legitimacy to match the tire pressure sensor of the vehicle, realizing the safety verification of the matching process;

[0095] S4: Place the PKE FOB near the tire to be matched as a test device to ensure that the tire pressure sensor to be matched can be matched to the correct tire;

[0096] S5: Deflate the tire of the tire pressure sensor to be matched to activate the rapid air leakage alarm function;

[0097] S6: The operator activates the simple matching function of the tire pressure sensor on the vehicle's central control screen;

[0098] S7: After the tire pressure sensor to be matched detects that the tire is leaking air, it will immediately start emitting a rapid air leakage alarm signal and send it to the BCM, sending it once every 1 second;

[0099] S8: The BCM triggers the LF antenna, generates an LF signal and sends it to the vehicle's PKE FOB;

[0100] S9: After the PKE FOB receives the LF signal, it generates a feedback RF signal and sends it to the BCM. The RF signal contains information such as the strength and orientation of the LF signal received by the PKE FOB.

[0101] S10: After the BCM receives the RF signal from the PKE FOB, it calculates the position of the PKE FOB based on the data such as the strength and orientation of the LF signal contained in the RF signal, and then determines which tire sensor is the tire pressure sensor to be matched.

[0102] S11: The BCM receives the rapid air leakage flag of the tire pressure sensor.

[0103] S12: The BCM determines whether it has received more than three frames of rapid air leakage alarm signals sent by the same tire pressure sensor to be matched within 30 seconds. If it has received more than three frames of rapid air leakage alarm signals sent by the same tire pressure sensor to be matched within 30 seconds, it executes step S13. If it has not received more than three frames of rapid air leakage alarm signals sent by the same tire pressure sensor to be matched within 30 seconds, it executes step S14.

[0104] S13: The BCM successfully matches the tire pressure sensor to be matched, saves the ID code of the tire pressure sensor to be matched to the corresponding tire position, and sends out a matching success flag.

[0105] S14: The BCM fails to match the tire pressure sensor and sends out a matching failure flag.

[0106] S15: The HU receives the matching success flag sent by the BCM and prompts "The tire pressure sensor has been successfully matched", and exits the matching process.

[0107] S16: The HU receives the matching failure flag sent by the BCM and prompts "The tire pressure sensor has not been successfully matched", and exits the matching process.

[0108] S17: Inflate the tire to ensure the driving safety of the vehicle after the driver leaves the repair shop.

[0109] The embodiment of the present application also provides a tire pressure sensor matching device 40 for a vehicle. Please refer to Figure 4, including: a detection module 410, configured to detect the tire state of a target tire during the matching process between a tire pressure sensor to be matched and the target tire; an acquisition module 420, configured to, when the tire state is a full-air state, acquire a leakage signal collected by the tire pressure sensor to be matched during the deflation process of the target tire; a matching module 430, configured to generate a position test signal for the tire pressure sensor to be matched based on the leakage signal, and use the position test signal to determine the position information of the tire pressure sensor to be matched, so as to establish a matching relationship between the tire pressure sensor to be matched and the target tire based on the position information.

[0110] The matching module 430 includes: a sending unit, configured to send the position test signal to a test device at a test position within a preset range of the target tire; a receiving unit, configured to receive a position signal fed back by the test device, and determine the position information according to the position signal.

[0111] The receiving unit includes: an acquisition subunit, configured to acquire the intensity information and azimuth information of the position signal; a calculation subunit, configured to acquire the position information according to the intensity information and azimuth information.

[0112] The matching module 430 includes: a determination unit, configured to determine the identification information of the tire pressure sensor to be matched corresponding to the position information; a matching unit, configured to establish a matching relationship between the tire pressure sensor to be matched and the target tire based on the identification information of the tire pressure sensor to be matched and the identification information of the target tire.

[0113] The tire pressure sensor matching device 40 for a vehicle provided in an embodiment of the present application further includes: a calculation module, configured to calculate the number of frames sent by the leakage signal within a target time; a writing module, configured to determine that the matching is successful when the number of frames sent reaches a preset number of frames, so as to write the matching relationship into the control module of the vehicle, otherwise generate a matching failure flag to give a failure prompt to the user.

[0114] An embodiment of the present application further provides an electronic device 50, please refer to Figure 5 , including a processor 510 and a memory 520, wherein, the memory 510 is configured to store a computer program; the processor 520 is configured to execute the program stored on the memory 510 to implement the tire pressure sensor matching method for a vehicle introduced in any embodiment of the present application.

[0115] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program is executed by a processor, the tire pressure sensor matching method for a vehicle introduced in any embodiment of the present application is implemented.

[0116] In the present application, "a plurality of" means two or more.

[0117] In this application, unless otherwise clearly defined, the terms "installation", "connection", and "linkage" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0118] The terms "first", "second", "third", "fourth", etc. (if any) in this application are used to distinguish similar objects and do not necessarily describe a specific order or sequence.

[0119] The term "and / or" in this application is merely a description of the associated relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the front and rear associated objects.

[0120] If there is no special indication, all steps of this application can be carried out in sequence or randomly. For example, the method includes steps A and B, indicating that the method can include steps A and B carried out in sequence, or steps B and A carried out in sequence. For example, it is mentioned that the method may further include step C, indicating that step C can be added to the method in any order. For example, the method can include steps A, B, and C, or steps A, C, and B, or steps C, A, and B, etc.

[0121] The above are only the preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

Claims

1. A method for matching tire pressure sensors of a vehicle, characterized in that, It includes the following steps: During the matching process of the tire pressure sensor to be matched and the target tire, detect the tire state of the target tire; When the tire state is a fully inflated state, obtain the air leakage signal generated by the tire pressure sensor to be matched during the deflation process of the target tire; Generate a position test signal for the tire pressure sensor to be matched based on the air leakage signal, and use the position test signal to determine the position information of the tire pressure sensor to be matched, so as to establish a matching relationship between the tire pressure sensor to be matched and the target tire based on the position information.

2. The method according to claim 1, wherein The using the position test signal to determine the position information of the tire pressure sensor to be matched includes: Send the position test signal to a test device at a test position within a preset range of the target tire; Receive the position signal fed back by the test device, and determine the position information according to the position signal.

3. The method according to claim 2, characterized in that, The determining the position information according to the position signal includes: Obtain the intensity information and azimuth information of the position signal; Obtain the position information according to the intensity information and the azimuth information.

4. The method according to claim 1, wherein The establishing the matching relationship between the tire pressure sensor to be matched and the target tire based on the position information includes: Determine the identification information of the tire pressure sensor to be matched corresponding to the position information; Based on the identification information of the tire pressure sensor to be matched and the identification information of the target tire, establish a matching relationship between the tire pressure sensor to be matched and the target tire.

5. The method according to claim 1, wherein It also includes: Calculate the number of transmission frames of the air leakage signal within a target time; When the number of transmission frames reaches a preset number of frames, determine that the matching is successful, and write the matching relationship into the control module of the vehicle, otherwise generate a matching failure flag to give a failure prompt to the user.

6. A tire pressure sensor matching device for a vehicle, characterized in that, It includes: A detection module, configured to detect the tire state of the target tire during the matching process of the tire pressure sensor to be matched and the target tire; An acquisition module, configured to obtain the air leakage signal generated by the tire pressure sensor to be matched during the deflation process of the target tire when the tire state is a fully inflated state; A matching module, configured to generate a position test signal for the tire pressure sensor to be matched based on the air leakage signal, and use the position test signal to determine the position information of the tire pressure sensor to be matched, so as to establish a matching relationship between the tire pressure sensor to be matched and the target tire based on the position information.

7. The device according to claim 6, characterized in that, The matching module includes: A sending unit, configured to send the position test signal to a test device at a test position within a preset range of the target tire; A receiving unit, configured to receive the position signal fed back by the test device, and determine the position information according to the position signal.

8. The device according to claim 7, wherein The receiving unit includes: An acquisition subunit, configured to obtain the intensity information and azimuth information of the position signal; A calculation subunit, configured to obtain the position information according to the intensity information and the azimuth information.

9. An electronic device, characterized in that, It includes a processor and a memory, wherein The memory is used to store a computer program; The processor is configured to execute the program stored on the memory to implement the method according to any one of claims 1-5.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1-5 is implemented.

Images