Tire pressure data acquisition method and device, equipment and storage medium

Abstract

The invention relates to a tire pressure data acquisition method, device and equipment and a storage medium, and the method comprises the following steps: receiving a tire pressure signal sent by each tire pressure sensor; the tire pressure signals at least comprise signal sending moments of the tire pressure signals and tire pressure data collected by corresponding tire pressure sensors; determining signal flight time corresponding to each tire pressure signal according to the signal receiving moment and the signal sending moment corresponding to each tire pressure signal; determining a target tire pressure signal corresponding to the target wheel from all the received tire pressure signals according to the signal flight time corresponding to each tire pressure signal; and in the target tire pressure signal, determining target tire pressure data corresponding to the target wheel. According to the method, the tedious operation of resetting the corresponding relation between the tire pressure sensor ID and the wheel when the tire and hub assembly is replaced can be avoided, the working difficulty of maintenance personnel is effectively reduced, and meanwhile, the time cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of computer, in particular to a tire pressure data acquisition method and device, equipment and storage medium. BACKGROUND

[0002] During the driving of the automobile, the state of the tire plays a decisive role in driving safety and performance. Therefore, the tire pressure data collected by the tire pressure sensor is an important means to ensure driving safety and optimize vehicle performance.

[0003] In practice, when the tire pressure sensor receives the wake-up signal sent by the area controller, the tire pressure sensor generates a tire pressure signal according to the collected tire pressure data and the tire pressure sensor ID, and sends it to the area controller. After receiving the signal, the area controller determines the tire pressure data corresponding to each wheel according to the tire pressure sensor ID in the signal and the pre-set correspondence between the tire pressure sensor ID and the wheel. Finally, the area controller transmits the wheel information and the corresponding tire pressure data to the large screen or the APP for display, so that the driver can know the real-time state of the tire at any time.

[0004] However, if the tire and hub assembly need to be replaced, the tire pressure sensor ID of the newly replaced tire and hub assembly does not match the original correspondence, so it is necessary to use a special device to re-set the correspondence between the tire pressure sensor ID and the wheel. This operation process is tedious, which greatly increases the work difficulty and time cost of the maintenance personnel. SUMMARY

[0005] The present application provides a tire pressure data acquisition method, device, equipment and storage medium, which determines the tire pressure data in a way that mainly depends on the signal receiving time and the signal sending time of the tire pressure signal. These two time information will not change due to the replacement of the tire and hub assembly. In this way, the tedious operation of re-setting the correspondence between the tire pressure sensor ID and the wheel when replacing the tire and hub assembly is avoided, effectively reducing the work difficulty of the maintenance personnel, and saving the time cost.

[0006] In a first aspect, the present application provides a tire pressure data acquisition method, which comprises: receiving the tire pressure signal sent by each tire pressure sensor and the signal receiving time corresponding to the tire pressure signal at the time of receiving the tire pressure signal, the tire pressure signal at least including the signal sending time of the tire pressure signal and the tire pressure data collected by the corresponding tire pressure sensor; determining the signal flight time corresponding to each tire pressure signal according to the signal receiving time and the signal sending time corresponding to each tire pressure signal; determine, from all the received tire pressure signals, a target tire pressure signal corresponding to the target wheel according to a signal flight time corresponding to each tire pressure signal; determine, in the target tire pressure signal, target tire pressure data corresponding to the target wheel.

[0007] Optionally, the determining, from all the received tire pressure signals, a target tire pressure signal corresponding to the target wheel according to a signal flight time corresponding to each tire pressure signal comprises: obtaining a target flight distance corresponding to the target wheel; determining a signal flight distance corresponding to each tire pressure signal according to a signal flight time corresponding to each tire pressure signal; determining, in the signal flight distance corresponding to each tire pressure signal, a reference flight distance with a difference from the target flight distance less than a preset distance; determining, as the target tire pressure signal corresponding to the target wheel, a tire pressure signal corresponding to the reference flight distance.

[0008] Optionally, the determining, from all the received tire pressure signals, a target tire pressure signal corresponding to the target wheel according to a signal flight time corresponding to each tire pressure signal comprises: obtaining a target flight time corresponding to the target wheel; determining, in the signal flight time corresponding to each tire pressure signal, a reference flight time with a difference from the target flight time less than a preset time length; determining, as the target tire pressure signal corresponding to the target wheel, a tire pressure signal corresponding to the reference flight time.

[0009] Optionally, the determining, from all the received tire pressure signals, a target tire pressure signal corresponding to the target wheel according to a signal flight time corresponding to each tire pressure signal comprises: sorting all the tire pressure signals according to the signal flight time corresponding to each tire pressure signal to obtain a tire pressure signal sequence; determining, according to a position of each tire pressure signal in the tire pressure signal sequence, the target tire pressure signal corresponding to the target wheel.

[0010] Optionally, the determining, in the target tire pressure signal, target tire pressure data corresponding to the target wheel comprises: generating a first detector signal according to tire pressure data in the target tire pressure signal, and sending the first detector signal to a regional controller, so that the regional controller obtains a signal receiving time corresponding to a time when the first detector signal is received, and determines target tire pressure data of the target wheel according to the signal receiving time of the first detector signal among tire pressure data in a plurality of first detector signals; Alternatively, based on the tire pressure data in the target tire pressure signal and the signal transmission time of the detector, a second detector signal is generated and sent to the area controller, so that the area controller can obtain the signal transmission time of the detector in the second detector signal, and determine the target tire pressure data of the target wheel from the tire pressure data in multiple detector signals based on the signal transmission time of the detector.

[0011] Optionally, determining the target tire pressure data corresponding to the target wheel from the target tire pressure signal includes: A third detector signal is generated based on the tire pressure data in the target tire pressure signal and the target wheel identifier corresponding to the target wheel; The third detector signal is sent to the area controller, so that the area controller determines the tire pressure data in the detector signal as the target tire pressure data of the target wheel based on the target wheel identifier in the third detector signal.

[0012] Optionally, the method further includes: Based on the signal flight time corresponding to each tire pressure signal, the target wheel identifier corresponding to the target wheel is determined from a preset set of wheel identifiers; Alternatively, a preset wheel identifier can be determined as the target wheel identifier corresponding to the target wheel.

[0013] Secondly, this application provides a tire pressure data acquisition device, the device comprising: The acquisition unit is used to receive the tire pressure signal sent by each tire pressure sensor and the signal reception time corresponding to the receipt of the tire pressure signal. The tire pressure signal includes at least the signal transmission time of the tire pressure signal and the tire pressure data collected by the corresponding tire pressure sensor. The first determining unit is used to determine the signal flight time corresponding to each tire pressure signal based on the signal reception time and signal transmission time corresponding to each tire pressure signal; The second determining unit is used to determine the target tire pressure signal corresponding to the target wheel from all received tire pressure signals based on the signal flight time corresponding to each tire pressure signal. The third determining unit is used to determine the target tire pressure data corresponding to the target wheel from the target tire pressure signal.

[0014] Optionally, the second determining unit is used for: Obtain the target flight distance corresponding to the target wheel; The signal flight distance corresponding to each tire pressure signal is determined based on the signal flight time corresponding to each tire pressure signal. In the signal flight distance corresponding to each tire pressure signal, a reference flight distance whose difference from the target flight distance is less than a preset distance is determined; The tire pressure signal corresponding to the reference flight distance is determined as the target tire pressure signal corresponding to the target wheel.

[0015] Optionally, the second determining unit is used for: Obtain the target flight time corresponding to the target wheel; Within the signal flight time corresponding to each tire pressure signal, a reference flight time whose difference from the target flight time is less than a preset duration is determined; The tire pressure signal corresponding to the reference flight time is determined as the target tire pressure signal corresponding to the target wheel.

[0016] Optionally, the second determining unit is used for: Based on the signal flight time corresponding to each tire pressure signal, all tire pressure signals are sorted to obtain a tire pressure signal sequence; The target tire pressure signal corresponding to the target wheel is determined based on the position of each tire pressure signal in the tire pressure signal sequence.

[0017] Optionally, the third determining unit is used for: Based on the tire pressure data in the target tire pressure signal, a first detector signal is generated and sent to the area controller so that the area controller can obtain the signal reception time corresponding to the receipt of the first detector signal. Based on the signal reception time of the first detector signal, the target tire pressure data of the target wheel is determined from the tire pressure data in multiple first detector signals. Alternatively, based on the tire pressure data in the target tire pressure signal and the signal transmission time of the detector, a second detector signal is generated and sent to the area controller, so that the area controller can obtain the signal transmission time of the detector in the second detector signal, and determine the target tire pressure data of the target wheel from the tire pressure data in multiple detector signals based on the signal transmission time of the detector.

[0018] Optionally, the third determining unit is used for: A third detector signal is generated based on the tire pressure data in the target tire pressure signal and the target wheel identifier corresponding to the target wheel; The third detector signal is sent to the area controller, so that the area controller determines the tire pressure data in the detector signal as the target tire pressure data of the target wheel based on the target wheel identifier in the third detector signal.

[0019] Optionally, the apparatus further includes a fourth determining unit, the fourth determining unit being configured to: Based on the signal flight time corresponding to each tire pressure signal, the target wheel identifier corresponding to the target wheel is determined from a preset set of wheel identifiers; Alternatively, a preset wheel identifier can be determined as the target wheel identifier corresponding to the target wheel.

[0020] Thirdly, this application provides a tire pressure data acquisition device, comprising: at least one communication interface; at least one bus connected to the at least one communication interface; at least one processor connected to the at least one bus; and at least one memory connected to the at least one bus, wherein the processor is configured to: Receives tire pressure signals sent by each tire pressure sensor and the signal reception time corresponding to the receipt of the tire pressure signal, wherein the tire pressure signal includes at least the signal transmission time of the tire pressure signal and the tire pressure data collected by the corresponding tire pressure sensor; The flight time of each tire pressure signal is determined based on the signal reception time and signal transmission time corresponding to each tire pressure signal. Based on the signal flight time corresponding to each tire pressure signal, the target tire pressure signal corresponding to the target wheel is determined from all received tire pressure signals; From the target tire pressure signal, the target tire pressure data corresponding to the target wheel is determined.

[0021] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described tire pressure data acquisition method.

[0022] Compared with the prior art, the technical solution provided in this application has the following advantages: First, it receives the tire pressure signal sent by each tire pressure sensor and the corresponding signal reception time. The tire pressure signal includes at least the signal transmission time and the tire pressure data collected by the tire pressure sensor. Then, based on the signal reception time and signal transmission time of each tire pressure signal, its corresponding flight time is calculated. Next, based on these signal flight times, the target tire pressure signal corresponding to the target wheel is determined from all received tire pressure signals. Finally, the tire pressure data corresponding to the target wheel is extracted from the target tire pressure signal. Therefore, the method of determining tire pressure data in this application mainly relies on the signal reception time and signal transmission time of the tire pressure signal, and these two time information will not change due to the replacement of the tire and wheel assembly. This avoids the tedious operation of resetting the tire pressure sensor ID and wheel correspondence when replacing the tire and wheel assembly, effectively reducing the workload of maintenance personnel and saving time costs. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0026] Figure 1 A flowchart illustrating a tire pressure data acquisition method provided in an embodiment of this application; Figure 2 A schematic diagram illustrating a tire pressure data acquisition method provided in an embodiment of this application; Figure 3 A schematic diagram illustrating another method for acquiring tire pressure data provided in an embodiment of this application; Figure 4 A flowchart illustrating a method for determining a target tire pressure signal provided in an embodiment of this application; Figure 5 A flowchart illustrating another method for determining a target tire pressure signal provided in an embodiment of this application; Figure 6 This is a schematic flowchart of a tire pressure data acquisition device provided in an embodiment of this application; Figure 7 This is a schematic diagram of a tire pressure data acquisition device provided in an embodiment of this application. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0029] During vehicle operation, tire condition plays a decisive role in driving safety and performance. Therefore, understanding tire condition through tire pressure data collected by tire pressure sensors is a crucial means of ensuring driving safety and optimizing vehicle performance. In practice, when a tire pressure sensor receives a wake-up signal from a regional controller, it generates a tire pressure signal based on the collected tire pressure data and its own tire pressure sensor ID, and sends this signal to the regional controller. Upon receiving the signal, the regional controller determines the tire pressure data for each wheel based on the tire pressure sensor ID in the signal and a pre-set correspondence between tire pressure sensor IDs and wheels. Finally, the regional controller transmits the wheel information and corresponding tire pressure data to a large screen or app for display, allowing the driver to easily monitor the real-time tire status. However, if tires and wheel assemblies need to be replaced, the tire pressure sensor IDs of the newly replaced tires and wheel assemblies do not match the original correspondence. Therefore, specific equipment is required to reset the tire pressure sensor IDs and wheel correspondence. This process is cumbersome, significantly increasing the workload and time cost for maintenance personnel.

[0030] In summary, this application provides a method for acquiring tire pressure data. This method determines tire pressure data primarily by relying on the signal reception and transmission times of the tire pressure signal. These two time parameters do not change due to tire or wheel assembly replacement. This avoids the tedious operation of resetting the tire pressure sensor ID and wheel correspondence when replacing tires and wheel assemblies, effectively reducing the workload for maintenance personnel and saving time. Figure 1 As shown, the specific steps include: Step 101: Receive the tire pressure signal sent by each tire pressure sensor and the signal reception time corresponding to the receipt of the tire pressure signal.

[0031] The tire pressure signal includes at least the time when the tire pressure signal is transmitted and the tire pressure data collected by the corresponding tire pressure sensor.

[0032] In this step, when the area controller receives a tire pressure acquisition command, it sends a wake-up signal to the tire pressure sensor, waking it from its low-power sleep state. Once awakened, the tire pressure sensor begins acquiring tire pressure data, collecting real-time tire pressure data. Then, based on this data and a preset signal transmission time, it generates a tire pressure signal and sends it to the detector at the designated transmission time. Whenever the detector receives a tire pressure signal from a tire pressure sensor, it records the time; this time is the signal reception time for that tire pressure signal. In this way, the detector acquires the tire pressure signal sent by each tire pressure sensor and its corresponding signal reception time.

[0033] The detector is a high-precision wireless signal detector, which is responsible for receiving signals from various tire pressure sensors and processing and analyzing these signals.

[0034] It should be noted that in this application, the tire pressure signal generated by the tire pressure sensor still includes the tire pressure sensor ID. However, unlike the prior art, this application no longer relies on the tire pressure sensor ID to determine which wheel the corresponding tire pressure data originates from.

[0035] Step 102: Determine the signal flight time corresponding to each tire pressure signal based on the signal reception time and signal transmission time corresponding to each tire pressure signal.

[0036] In this step, for each tire pressure signal, the detector analyzes the tire pressure signal, extracts the signal transmission time carried by the tire pressure signal, and then calculates the difference between the signal transmission time and the signal reception time corresponding to the tire pressure signal to obtain the signal flight time corresponding to the tire pressure signal.

[0037] The formula for determining flight time is based on a preset formula, where the preset formula is: ; Where Tof is the time of flight; T_TX is the time when the signal leaves the transmitter, i.e., the time when the signal is transmitted; and T_RX is the time when the signal arrives at the receiver, i.e., the time when the signal is received.

[0038] Step 103: Based on the signal flight time corresponding to each tire pressure signal, determine the target tire pressure signal corresponding to the target wheel from all received tire pressure signals.

[0039] The target wheel refers to the wheel that the current detector is trying to identify, which refers to one or more specific wheels of the vehicle. Specifically, the target wheel can be a single wheel of the vehicle, such as the wheel on the right front of the vehicle; or it can be multiple wheels of the vehicle, such as the two front wheels of the vehicle, the two rear wheels of the vehicle, or all the wheels of the vehicle. If the target wheel is not all the wheels of the vehicle, then multiple detectors need to be installed on the vehicle.

[0040] In this step, after the detector is installed on the vehicle, the actual distance between each wheel and the detector is measured to obtain the actual distance between each wheel and the detector (hereinafter referred to as the actual distance corresponding to each wheel). From these actual distances, the actual distance corresponding to the target wheel is identified and stored in the detector. After the detector calculates the signal flight time corresponding to each tire pressure signal, it multiplies each signal flight time by the signal flight speed to obtain the signal flight distance corresponding to each tire pressure signal. Next, the difference between the signal flight distance corresponding to each tire pressure signal and the actual distance corresponding to the target wheel is calculated to obtain the difference value corresponding to each tire pressure signal. Finally, among the tire pressure signals corresponding to these differences, the tire pressure signals with differences less than a preset value are identified and determined as the target tire pressure signals corresponding to the target wheel.

[0041] Alternatively, based on the actual distance to the target wheel, determine the signal flight time corresponding to the target wheel. For each tire pressure signal, calculate the difference between the signal flight time corresponding to that tire pressure signal and the signal flight time corresponding to the target wheel to obtain the difference value corresponding to that tire pressure signal. Among all the differences corresponding to tire pressure signals, find the tire pressure signal whose corresponding value is less than a preset value and determine it as the target tire pressure signal corresponding to the target wheel.

[0042] In addition, when the target wheel is only one wheel on the vehicle, the tire pressure signal with the minimum value can be found and determined as the target tire pressure signal.

[0043] It should be noted that the accuracy of determining the target tire pressure signal corresponding to the target wheel using the above method depends on the placement of the detector. This placement must have a limited difference in distance from each wheel, which significantly impacts the determination of the target tire pressure signal. In a preferred embodiment, the detector is placed near the target wheel but not attached to the tire and wheel assembly. For example, as shown in Figure 2, detectors are installed at the wheel arch of each wheel, namely the left front detector, right front detector, left rear detector, and right rear detector. With this setup, since each detector has a nearest tire pressure sensor, and the distance to it is significantly different from the distance to other tire pressure sensors, each detector can accurately identify the tire pressure signal matching the corresponding wheel from all tire pressure signals. Based on the above, there are also various other ways to determine the target tire pressure signal. For example, the tire pressure signal with the shortest corresponding signal flight time can be directly determined as the target tire pressure signal, or the tire pressure signal with the signal flight time closest to a preset flight time can also be determined as the target tire pressure signal. The preset flight time is the time it takes for the signal to travel from the tire pressure sensor to the corresponding detector (in the example above, the detector closest to the tire pressure sensor).

[0044] Of course, it can also be like Figure 3 As shown, the detector is only installed on the wheel arch of the left front wheel. This detector can find the tire pressure signal corresponding to each wheel among all tire pressure signals. In this case, since the distance between the detector and the tire pressure sensors near each wheel shows significant differences (for example, the detector is closest to the tire pressure sensor near the left front wheel, then next closest to the tire pressure sensor near the right front wheel, farther from the tire pressure sensor near the left rear wheel, and farthest from the tire pressure sensor near the right rear wheel), the tire pressure signals can be sorted from smallest to largest according to the flight time corresponding to each tire pressure signal, resulting in a tire pressure signal sequence. The first tire pressure signal in this sequence is identified as the tire pressure signal corresponding to the left front wheel, the second as the tire pressure signal corresponding to the right front wheel, the third as the tire pressure signal corresponding to the left rear wheel, and the fourth as the tire pressure signal corresponding to the right rear wheel. Of course, the above data comparison method can still be used to determine the tire pressure signal corresponding to each wheel.

[0045] Step 104: Determine the target tire pressure data corresponding to the target wheel from the target tire pressure signal.

[0046] In this step, after determining the target tire pressure signal of the target wheel, the detector acquires the tire pressure data from the target tire pressure signal and the target wheel identifier set for the target wheel. Based on the target tire pressure data and the target wheel identifier, it generates a detector signal and sends it to the area controller. Upon receiving the detector signal, the area controller reads the identifier and tire pressure data from the detector signal. Based on the identifier and the preset correspondence between identifiers and wheels, it determines which wheel the identifier corresponds to, and thus identifies the tire pressure data as the tire pressure data of that wheel.

[0047] When the zone controller is set to a specific location, the distance between that location and the right front wheel, right rear wheel, left front wheel, and left rear wheel differs significantly. Therefore, the zone controller needs to identify all wheels on the vehicle. In practice, the zone controller receives tire pressure signals from all tire pressure sensors, records the signal reception time of each tire pressure signal, and reads the signal transmission time from the tire pressure signal. Then, after obtaining the signal transmission and reception times corresponding to each tire pressure signal, the zone controller determines the tire pressure data corresponding to each wheel based on the method described in this application, and performs subsequent processing based on the tire pressure data corresponding to each wheel.

[0048] In this embodiment, the tire pressure signal sent by each tire pressure sensor and the signal reception time recorded when the tire pressure signal is received are first acquired. The tire pressure signal includes at least the signal transmission time and the tire pressure data collected by the tire pressure sensor. Then, based on the signal reception and transmission times of each tire pressure signal, the corresponding flight time is calculated. Next, based on these signal flight times, the target tire pressure signal corresponding to the target wheel is determined from all received tire pressure signals. Finally, the tire pressure data corresponding to the target wheel is extracted from the target tire pressure signal. Therefore, the method of determining tire pressure data in this application mainly relies on the signal reception and transmission times of the tire pressure signal, and these two time information will not change due to tire and wheel assembly replacement. This avoids the tedious operation of resetting the tire pressure sensor ID and wheel correspondence when replacing tires and wheel assemblies, effectively reducing the workload of maintenance personnel and saving time costs.

[0049] In this embodiment, the detector pre-stores the target flight time corresponding to the target wheel. By filtering out reference flight times whose difference from the target flight time is less than a preset duration, the tire pressure signal corresponding to the reference flight time is determined as the target tire pressure signal corresponding to the target wheel. Therefore, this embodiment provides a method for determining a target tire pressure signal, specifically including: acquiring the target flight time corresponding to the target wheel; determining, within the signal flight time corresponding to each tire pressure signal, a reference flight time whose difference from the target flight time is less than a preset duration; and determining the tire pressure signal corresponding to the reference flight time as the target tire pressure signal corresponding to the target wheel.

[0050] The preset duration is determined by technicians based on the delays that occur during signal propagation.

[0051] In this step, the detector pre-stores the target flight time corresponding to the target wheel. This allows for the calculation of the difference between the signal flight time corresponding to each tire pressure signal and the target flight time, thus obtaining the difference for each tire pressure signal. Among these differences, the signal flight time with a difference less than a preset duration is identified and designated as the reference flight time. Finally, the tire pressure signal corresponding to this reference flight time is determined as the target tire pressure signal for the target wheel.

[0052] It should be noted that when there are multiple target wheels, it means that the current detector needs to identify the tire pressure information of multiple wheels. Therefore, the target flight time corresponding to each target wheel is obtained. For each target wheel, when the difference between a certain signal flight time and its corresponding target flight time is less than a preset duration, the tire pressure signal corresponding to that signal flight time is determined as the target tire pressure signal corresponding to that target wheel.

[0053] In this embodiment, the detector pre-stores the target flight distance corresponding to the target wheel. It then filters out reference flight distances whose difference from the target flight distance is less than a preset distance, and determines the tire pressure signal corresponding to the reference flight distance as the target tire pressure signal for the target wheel. Therefore, this embodiment provides a method for determining a target tire pressure signal, specifically as follows: Figure 4 As shown, it includes: Step 401: Obtain the target flight distance corresponding to the target wheel.

[0054] The target flight distance corresponding to the target wheel is the distance from the tire pressure sensor of the target wheel to the corresponding detector. For example, such as Figure 2 As shown, the left front detector is used to identify the tire pressure sensor corresponding to the left front wheel. Therefore, the target flight distance corresponding to the left front wheel is the distance from the tire pressure sensor corresponding to the left front wheel to the left front detector.

[0055] In this step, the detector stores the target flight distance of the target wheel. When this step needs to be performed, the target flight distance of the target wheel is obtained.

[0056] Step 402: Determine the signal flight distance corresponding to each tire pressure signal based on the signal flight time corresponding to each tire pressure signal.

[0057] In this step, for each tire pressure signal, the signal flight time corresponding to the tire pressure signal is multiplied by the preset signal flight speed to obtain the signal flight distance corresponding to the tire pressure information.

[0058] In practice, the transmission speed of radio waves is approximately equal to the speed of light. Therefore, the flight distance d can be calculated using a preset formula, which is: ; Where d is the distance between the transmitter and receiver, i.e. the signal flight distance mentioned above, c is the speed of signal propagation in a specific medium, i.e. the signal flight speed mentioned above, and Tof is the signal flight time.

[0059] Step 403: In the signal flight distance corresponding to each tire pressure signal, determine the reference flight distance where the difference from the target flight distance is less than the preset distance.

[0060] The preset distance is determined by technicians based on the delay distance generated during signal propagation.

[0061] In this step, for each tire pressure signal, the difference between the signal flight distance and the target flight distance corresponding to the tire pressure signal is calculated, and it is detected whether the difference is less than a preset distance. When the difference is less than the preset distance, it is determined as the reference flight distance.

[0062] Step 404: Determine the tire pressure signal corresponding to the reference flight distance as the target tire pressure signal corresponding to the target wheel.

[0063] In this step, the tire pressure signal corresponding to the reference flight distance is determined, and this tire pressure signal is identified as the target tire pressure signal.

[0064] It should be noted that when there are multiple target wheels, it means that the current detector needs to identify the tire pressure information of multiple wheels. Therefore, the target flight distance corresponding to each target wheel is obtained. For each target wheel, when the difference between a certain signal flight distance and its corresponding target flight distance is less than a preset distance, the tire pressure signal corresponding to that signal flight distance is determined as the target tire pressure signal corresponding to that target wheel.

[0065] In this embodiment, to ensure that the area controller can accurately identify that the received tire pressure data belongs to the target wheel, the detector generates a specific detector signal based on the target tire pressure data and the target wheel identifier corresponding to the target wheel. Thus, when the area controller receives the detector signal, it determines which wheel the tire pressure data specifically corresponds to based on the wheel identifier contained in the signal. Therefore, this embodiment provides a method for determining target tire pressure data, specifically comprising the following steps: generating a third detector signal based on the tire pressure data in the target tire pressure signal and the target wheel identifier corresponding to the target wheel; sending the third detector signal to the area controller, so that the area controller determines the tire pressure data in the detector signal as the target tire pressure data of the target wheel based on the target wheel identifier in the third detector signal.

[0066] In this step, the detector integrates the tire pressure data from the target tire pressure signal with the target wheel identifier, generates a third detector signal according to a specific signal format and protocol, and sends it to the area controller. When the area controller receives the third detector signal, it determines the corresponding target wheel based on the target wheel identifier carried in the third detector signal. Subsequently, the area controller determines the tire pressure data in the third detector signal as the target tire pressure data for that target wheel. In this way, the area controller successfully obtains the real-time tire pressure information of the target wheel, providing a solid data foundation for subsequent operations such as tire pressure monitoring, anomaly warning, and vehicle driving status adjustment, thereby effectively ensuring the safety and stability of the vehicle during driving.

[0067] In this embodiment, when the detector sends tire pressure data for a single wheel to the area controller, it means that the detector has identified only one target wheel. In this case, the detector ID can be used as the wheel identifier for the target wheel. If the detector needs to send tire pressure data for multiple wheels to the area controller, that is, the detector needs to identify multiple target wheels, then multiple wheel identifiers need to be pre-set in the detector. In this case, in order to determine the identifier corresponding to each target wheel, it is necessary to filter from these pre-set wheel identifiers based on the signal flight time corresponding to each tire pressure signal to obtain the target wheel identifier corresponding to each target wheel. Therefore, this embodiment provides a method for determining the target wheel identifier, specifically: determining the target wheel identifier corresponding to the target wheel from a preset wheel identifier set based on the signal flight time corresponding to each tire pressure signal; or determining the preset wheel identifier as the target wheel identifier corresponding to the target wheel.

[0068] The wheel identifier uniquely indicates a specific wheel at a particular location on a vehicle. Using this identifier, the detector can distinguish wheels in different positions on the vehicle; for example, the left front wheel is identified by identifier 1, and the right front wheel by identifier 2. The target wheel identifier corresponding to the target wheel is essentially the wheel identifier to be used.

[0069] In this step, each wheel identifier corresponds to a signal flight time. In this way, the target wheel identifier corresponding to the target wheel can be determined from the preset wheel identifier set based on the signal flight time corresponding to each tire pressure signal.

[0070] In this embodiment, all tire pressure signals are sorted according to the signal flight time corresponding to each tire pressure signal to obtain a tire pressure signal sequence. Based on the position of each tire pressure signal in the sequence, the target tire pressure signal corresponding to the target wheel is determined. Therefore, this embodiment provides a method for determining a target tire pressure signal, specifically as follows: Figure 5 As shown, it includes: Step 501: Sort all tire pressure signals according to the signal flight time corresponding to each tire pressure signal to obtain a tire pressure signal sequence.

[0071] In this step, based on the signal flight time corresponding to each tire pressure signal, all tire pressure signals are sorted in ascending or descending order to obtain a tire pressure signal sequence.

[0072] Step 502: Determine the target tire pressure signal corresponding to the target wheel based on the position of each tire pressure signal in the tire pressure signal sequence.

[0073] In this step, when the target wheel is the wheel closest to the detector, the smallest tire pressure signal in the tire pressure signal sequence is determined as the target tire pressure signal. When the target wheel is both the wheel closest to the detector and the wheel farthest from the detector, the smallest and largest tire pressure signals in the tire pressure signal sequence are determined as the target tire pressure signals. When the target wheel includes all wheels, all tire pressure signals in the tire pressure signal sequence are determined as the target tire pressure signals.

[0074] Based on the above, when the target wheels are all wheels, the detector can directly generate a target tire pressure data sequence based on the tire pressure signal sequence and send the target tire pressure data sequence to the area controller, so that the area controller can identify which wheel each target tire pressure data corresponds to based on the position in the target tire pressure data sequence.

[0075] In this scenario, since the data relies entirely on the tire pressure data sequence, and interference in the actual environment may lead to inaccurate data, two detectors can be set up at different locations (each tire pressure sensor is at a different distance from the detector). These two detectors determine the tire pressure data sequence in the same way. Then, when the area controller receives the tire pressure data sequences sent by these two detectors, it compares the two tire pressure data sequences. If they match, it means that the tire pressure data sequence is correct; otherwise, it means that the tire pressure data is incorrect.

[0076] When the target wheel is a subset of wheels, the detector can determine the target tire pressure signal corresponding to the target wheel based on the position of each tire pressure signal in the tire pressure signal sequence, and then determine the corresponding tire pressure data within these target tire pressure signals. Next, these tire pressure data are sorted according to the position of the corresponding target tire pressure signal in the tire pressure signal sequence to obtain a tire pressure data sequence. A detector signal is then generated based on this sequence and the detector ID, and sent to the area controller. Upon receiving the detector signal, the area controller reads the detector ID and the tire pressure data sequence from the detector signal. Based on the detector ID, it determines which wheels the corresponding detector should acquire tire pressure data from, and based on the position of each tire pressure data point in the tire pressure data sequence, it specifically determines which wheel the tire pressure data corresponds to.

[0077] For example, the detector signal includes detector 1 (detector ID) and a tire pressure data sequence. Detector 1 is used to acquire tire pressure data for the right front wheel and the left rear wheel. The first tire pressure data in the sequence corresponds to the right front wheel, and the second tire pressure data corresponds to the left rear wheel. Thus, the area controller receives the detector signal, acquires detector 1 and the tire pressure data sequence, determines the corresponding detector for acquiring the tire pressure data for the right front wheel and the left rear wheel based on detector 1, and confirms that the first tire pressure data corresponds to the right front wheel and the second tire pressure data corresponds to the left rear wheel.

[0078] Of course, the area controller can also determine which detector the signal comes from based on the time slot in which the detector receives or sends the signal and the detector corresponding to each time slot. Then, it can determine which wheels the detector will acquire tire pressure data from. Based on the position of each tire pressure data in the tire pressure data sequence, it can specifically determine which wheel the tire pressure data corresponds to.

[0079] In this embodiment, if the detector signal emitted by the detector only includes tire pressure data of a certain wheel, that is, the detector corresponds one-to-one with the target wheel. In this case, four detectors are installed on the vehicle, and the area controller allocates a dedicated time slot for each detector to send or receive signals sent by the corresponding detector within the time slot. The area controller determines which detector the signal originates from by detecting which time slot the signal reception time or signal transmission time of the detector signal falls within. Based on this judgment, the area controller can determine which wheel the tire pressure data carried by the detector signal belongs to, thereby achieving accurate identification of the tire pressure data of a single target vehicle. Therefore, this embodiment provides a method for determining target tire pressure data, the specific steps of which include: generating a first detector signal based on the tire pressure data in the target tire pressure signal, sending the first detector signal to the area controller so that the area controller obtains the signal reception time corresponding to the receipt of the first detector signal, and determining the target tire pressure data of the target wheel from the tire pressure data in multiple first detector signals based on the signal reception time of the first detector signal; Alternatively, based on the tire pressure data in the target tire pressure signal and the signal transmission time of the detector, a second detector signal is generated and sent to the area controller, so that the area controller can obtain the signal transmission time of the detector in the second detector signal, and determine the target tire pressure data of the target wheel from the tire pressure data in multiple detector signals based on the signal transmission time of the detector.

[0080] In the above scenario, the area controller will adjust the tire pressure sensor to continuously send tire pressure signals for a preset duration. The preset duration is equal to the sum of the durations of all time slots.

[0081] In this step, the detector generates a first detector signal based on the tire pressure data in the target tire pressure signal and sends the first detector signal to the area controller. When the area controller receives the first detector signal, it records the corresponding signal reception time and then determines the time slot in which that signal reception time falls. If the time slot corresponds to the target wheel, the tire pressure data in the first detector signal is determined as the target tire pressure data for that target wheel.

[0082] Alternatively, the detector can generate a second detector signal based on the tire pressure data in the target tire pressure signal and send this signal to the area controller. Upon receiving the second detector signal, the area controller analyzes it to obtain the signal transmission time. Then, it determines the time slot containing that transmission time. If the time slot corresponds to the target wheel, the tire pressure data in the first detector signal is identified as the target tire pressure data for that wheel.

[0083] like Figure 6 As shown, this application embodiment provides a tire pressure data acquisition device, which corresponds to the method embodiment, and specifically includes: The acquisition unit 601 is used to receive the tire pressure signal sent by each tire pressure sensor and the signal reception time corresponding to the receipt of the tire pressure signal. The tire pressure signal includes at least the signal transmission time of the tire pressure signal and the tire pressure data collected by the corresponding tire pressure sensor. The first determining unit 602 is used to determine the signal flight time corresponding to each tire pressure signal based on the signal reception time and signal transmission time corresponding to each tire pressure signal; The second determining unit 603 is used to determine the target tire pressure signal corresponding to the target wheel from all received tire pressure signals based on the signal flight time corresponding to each tire pressure signal. The third determining unit 604 is used to determine the target tire pressure data corresponding to the target wheel from the target tire pressure signal.

[0084] Optionally, the second determining unit 603 is used for: Obtain the target flight distance corresponding to the target wheel; The signal flight distance corresponding to each tire pressure signal is determined based on the signal flight time corresponding to each tire pressure signal. In the signal flight distance corresponding to each tire pressure signal, a reference flight distance whose difference from the target flight distance is less than a preset distance is determined; The tire pressure signal corresponding to the reference flight distance is determined as the target tire pressure signal corresponding to the target wheel.

[0085] Optionally, the second determining unit 603 is used for: Obtain the target flight time corresponding to the target wheel; Within the signal flight time corresponding to each tire pressure signal, a reference flight time whose difference from the target flight time is less than a preset duration is determined; The tire pressure signal corresponding to the reference flight time is determined as the target tire pressure signal corresponding to the target wheel.

[0086] Optionally, the second determining unit 603 is used for: Based on the signal flight time corresponding to each tire pressure signal, all tire pressure signals are sorted to obtain a tire pressure signal sequence; The target tire pressure signal corresponding to the target wheel is determined based on the position of each tire pressure signal in the tire pressure signal sequence.

[0087] Optionally, the third determining unit 604 is used for: Based on the tire pressure data in the target tire pressure signal, a first detector signal is generated and sent to the area controller so that the area controller can obtain the signal reception time corresponding to the receipt of the first detector signal. Based on the signal reception time of the first detector signal, the target tire pressure data of the target wheel is determined from the tire pressure data in multiple first detector signals. Alternatively, based on the tire pressure data in the target tire pressure signal and the signal transmission time of the detector, a second detector signal is generated and sent to the area controller, so that the area controller can obtain the signal transmission time of the detector in the second detector signal, and determine the target tire pressure data of the target wheel from the tire pressure data in multiple detector signals based on the signal transmission time of the detector.

[0088] Optionally, the third determining unit 604 is used for: A third detector signal is generated based on the tire pressure data in the target tire pressure signal and the target wheel identifier corresponding to the target wheel; The third detector signal is sent to the area controller, so that the area controller determines the tire pressure data in the detector signal as the target tire pressure data of the target wheel based on the target wheel identifier in the third detector signal.

[0089] Optionally, the device further includes a fourth determining unit 605, the fourth determining unit 605 being configured to: Based on the signal flight time corresponding to each tire pressure signal, the target wheel identifier corresponding to the target wheel is determined from a preset set of wheel identifiers; Alternatively, a preset wheel identifier can be determined as the target wheel identifier corresponding to the target wheel.

[0090] like Figure 7 As shown in the figure, this application provides a tire pressure data acquisition device, including a processor 701, a communication interface 702, a memory 703, and a communication bus 704. The processor 701, communication interface 702, and memory 703 communicate with each other via the communication bus 704. Memory 703 is used to store computer programs; In one embodiment of this application, when the processor 701 executes the program stored in the memory 703, it implements the tire pressure data acquisition method provided in any of the foregoing method embodiments, including: Receives tire pressure signals sent by each tire pressure sensor and the signal reception time corresponding to the receipt of the tire pressure signal, wherein the tire pressure signal includes at least the signal transmission time of the tire pressure signal and the tire pressure data collected by the corresponding tire pressure sensor; The flight time of each tire pressure signal is determined based on the signal reception time and signal transmission time corresponding to each tire pressure signal. Based on the signal flight time corresponding to each tire pressure signal, the target tire pressure signal corresponding to the target wheel is determined from all received tire pressure signals; From the target tire pressure signal, the target tire pressure data corresponding to the target wheel is determined.

[0091] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, performs the steps of the tire pressure data acquisition method provided in any of the foregoing method embodiments.

[0092] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0093] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0094] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0095] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for acquiring tire pressure data, characterized in that, The method includes: Receives tire pressure signals sent by each tire pressure sensor and the signal reception time corresponding to the receipt of the tire pressure signal, wherein the tire pressure signal includes at least the signal transmission time of the tire pressure signal and the tire pressure data collected by the corresponding tire pressure sensor; The flight time of each tire pressure signal is determined based on the signal reception time and signal transmission time corresponding to each tire pressure signal. Based on the signal flight time corresponding to each tire pressure signal, the target tire pressure signal corresponding to the target wheel is determined from all received tire pressure signals; From the target tire pressure signal, the target tire pressure data corresponding to the target wheel is determined.

2. The method according to claim 1, characterized in that, The step of determining the target tire pressure signal corresponding to the target wheel from all received tire pressure signals based on the signal flight time corresponding to each tire pressure signal includes: Obtain the target flight distance corresponding to the target wheel; The signal flight distance corresponding to each tire pressure signal is determined based on the signal flight time corresponding to each tire pressure signal. Among the signal flight distances corresponding to each tire pressure signal, a reference flight distance is determined where the difference between the target flight distance and the reference flight distance is less than a preset distance. The tire pressure signal corresponding to the reference flight distance is determined as the target tire pressure signal corresponding to the target wheel.

3. The method according to claim 1, characterized in that, The step of determining the target tire pressure signal corresponding to the target wheel from all received tire pressure signals based on the signal flight time corresponding to each tire pressure signal includes: Obtain the target flight time corresponding to the target wheel; Within the signal flight time corresponding to each tire pressure signal, a reference flight time whose difference from the target flight time is less than a preset duration is determined; The tire pressure signal corresponding to the reference flight time is determined as the target tire pressure signal corresponding to the target wheel.

4. The method according to claim 1, characterized in that, The step of determining the target tire pressure signal corresponding to the target wheel from all received tire pressure signals based on the signal flight time corresponding to each tire pressure signal includes: Based on the signal flight time corresponding to each tire pressure signal, all tire pressure signals are sorted to obtain a tire pressure signal sequence; The target tire pressure signal corresponding to the target wheel is determined based on the position of each tire pressure signal in the tire pressure signal sequence.

5. The method according to claim 1, characterized in that, Determining the target tire pressure data corresponding to the target wheel from the target tire pressure signal includes: Based on the tire pressure data in the target tire pressure signal, a first detector signal is generated and sent to the area controller so that the area controller can obtain the signal reception time corresponding to the receipt of the first detector signal. Based on the signal reception time of the first detector signal, the target tire pressure data of the target wheel is determined from the tire pressure data in multiple first detector signals. Alternatively, based on the tire pressure data in the target tire pressure signal and the signal transmission time of the detector, a second detector signal is generated and sent to the area controller, so that the area controller can obtain the signal transmission time of the detector in the second detector signal, and determine the target tire pressure data of the target wheel from the tire pressure data in multiple detector signals based on the signal transmission time of the detector.

6. The method according to claim 1, characterized in that, Determining the target tire pressure data corresponding to the target wheel from the target tire pressure signal includes: A third detector signal is generated based on the tire pressure data in the target tire pressure signal and the target wheel identifier corresponding to the target wheel; The third detector signal is sent to the area controller, so that the area controller determines the tire pressure data in the detector signal as the target tire pressure data of the target wheel based on the target wheel identifier in the third detector signal.

7. The method according to claim 6, characterized in that, The method further includes: Based on the signal flight time corresponding to each tire pressure signal, the target wheel identifier corresponding to the target wheel is determined from a preset set of wheel identifiers; Alternatively, a preset wheel identifier can be determined as the target wheel identifier corresponding to the target wheel.

8. A tire pressure data acquisition device, characterized in that, The device includes: The acquisition unit is used to receive the tire pressure signal sent by each tire pressure sensor and the signal reception time corresponding to the receipt of the tire pressure signal. The tire pressure signal includes at least the signal transmission time of the tire pressure signal and the tire pressure data collected by the corresponding tire pressure sensor. The first determining unit is used to determine the signal flight time corresponding to each tire pressure signal based on the signal reception time and signal transmission time corresponding to each tire pressure signal; The second determining unit is used to determine the target tire pressure signal corresponding to the target wheel from all received tire pressure signals based on the signal flight time corresponding to each tire pressure signal. The third determining unit is used to determine the target tire pressure data corresponding to the target wheel from the target tire pressure signal.

9. A tire pressure data acquisition device, characterized in that, include: At least one communication interface; At least one bus connected to the at least one communication interface; at least one processor connected to the at least one bus; At least one memory connected to the at least one bus, wherein the processor is configured to: Receives tire pressure signals sent by each tire pressure sensor and the signal reception time corresponding to the receipt of the tire pressure signal, wherein the tire pressure signal includes at least the signal transmission time of the tire pressure signal and the tire pressure data collected by the corresponding tire pressure sensor; The flight time of each tire pressure signal is determined based on the signal reception time and signal transmission time corresponding to each tire pressure signal. Based on the signal flight time corresponding to each tire pressure signal, the target tire pressure signal corresponding to the target wheel is determined from all received tire pressure signals; From the target tire pressure signal, the target tire pressure data corresponding to the target wheel is determined.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the tire pressure data acquisition method according to any one of claims 1 to 7.

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