EOL-based tire pressure sensor position calibration system

Abstract

The utility model relates to an EOL-based tire pressure sensor position calibration system, and relates to the technical field of finished automobile offline detection. The position calibration system at least comprises an EOL subsystem, tire pressure sensors, tire pressure sensor bar code pieces and a tire pressure monitoring device, the tire pressure sensors are arranged in tires of a vehicle, and each tire pressure sensor corresponds to at least one tire pressure sensor bar code piece; the tire pressure sensor bar code piece is arranged at a preset position corresponding to a tire where the tire pressure sensor is located, and ID information of the tire pressure sensor is recorded in the tire pressure sensor bar code piece; and the EOL subsystem is in communication connection with the tire pressure monitoring device, and is used for obtaining ID information and tire information of the tire pressure sensor from the tire pressure sensor bar code piece and sending the ID information and the tire information to the tire pressure monitoring device. By adopting the method and the device, efficient and accurate position calibration of the tire pressure sensor on the vehicle can be realized.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle end-of-line detection, and in particular to a position calibration system for tire pressure sensors based on EOL. Background Art

[0002] With advancements in automotive technology, tire pressure monitoring systems (TPMS) have become a crucial component in improving driving safety and vehicle performance. Accurately monitoring tire pressure not only extends tire life but also improves fuel efficiency and driving safety. Existing tire pressure sensors primarily work with the vehicle's wheels to monitor and provide real-time feedback on tire pressure.

[0003] Many existing methods use the rotation angle and position of the wheels to identify the location of tire pressure sensors. These methods often rely on the dynamic motion of the vehicle to accurately locate the sensors. However, this method, which relies on vehicle motion, is difficult to achieve effective calibration and positioning when the vehicle is stationary. Meanwhile, some methods attempt to locate the sensors through activation devices, but their applicability is limited. For example, in multi-tire wheel hub applications, existing activation methods can result in misidentification and fail to effectively meet positioning requirements in complex environments.

[0004] Current technical solutions generally have some shortcomings, which affect the recognition accuracy and stability of sensors in practical applications, thereby reducing the overall performance of the tire pressure monitoring system. Therefore, a new method is urgently needed to improve the accuracy and reliability of tire pressure sensor positioning. Utility Model Content

[0005] Based on this, it is necessary to provide a position calibration system for tire pressure sensors based on EOL to address the above technical issues.

[0006] In a first aspect, the present application provides a position calibration system for a tire pressure sensor based on an EOL, the position calibration system comprising at least an EOL subsystem, a tire pressure sensor, a tire pressure sensor barcode component, and a tire pressure monitoring device, wherein:

[0007] The tire pressure sensor is arranged in a tire of the vehicle, and each tire pressure sensor corresponds to at least one tire pressure sensor barcode component;

[0008] The tire pressure sensor barcode piece is arranged at a preset position corresponding to the tire where the tire pressure sensor is located, and the tire pressure sensor barcode piece records the ID information of the tire pressure sensor;

[0009] The EOL subsystem is in communication with the tire pressure monitoring device, and is configured to obtain the ID information and tire information of the tire pressure sensor from the tire pressure sensor barcode component, and send the ID information and tire information to the tire pressure monitoring device.

[0010] In one embodiment, the closest distance between the tire pressure sensor barcode element and the tire where the tire pressure sensor is located is less than a preset threshold.

[0011] In one embodiment, the tire pressure sensor barcode component is arranged on the tire where the tire pressure sensor is located and / or on the rim of the tire where the tire pressure sensor is located.

[0012] In one embodiment, the EOL subsystem includes a barcode scanning device, which is used to scan the tire pressure sensor barcode piece at the preset position to obtain the ID information and tire information of the tire pressure sensor.

[0013] In one embodiment, the EOL subsystem further includes a data storage subsystem, which is communicatively connected to the code scanning device and is configured to receive and store the ID information of the tire pressure sensor and the tire information uploaded by the code scanning device.

[0014] In one embodiment, the data storage subsystem includes at least a plurality of data storage areas, each of which is used to store ID information and tire information of tire pressure sensors at different locations of the vehicle.

[0015] In one embodiment, the EOL subsystem further includes an EOL server and an EOL terminal. The EOL server is used to obtain and integrate the ID information and tire information of the tire pressure sensor. The EOL terminal is used to obtain the integrated ID information and tire information of the tire pressure sensor from the EOL server, and enter the ID information and tire information into the tire pressure monitoring device.

[0016] In one embodiment, the EOL terminal is connected to the tire pressure monitoring device via a wireless network or a physical communication interface.

[0017] In one embodiment, the tire pressure monitoring device is arranged on the vehicle chassis frame and is used to store the ID information and tire information.

[0018] In one embodiment, the tire pressure monitoring device is further configured to receive tire status data sent by a tire pressure sensor, and broadcast the tire status data of each tire via a CAN bus based on the ID information and tire information.

[0019] By adopting the tire pressure sensor position calibration system disclosed in the present application, the position of the tire pressure sensor can be calibrated through the EOL subsystem, and the ID information recorded on the tire pressure sensor barcode piece can be used to effectively associate the tire pressure sensor with its corresponding tire. Specifically, before the vehicle leaves the factory, the EOL subsystem can quickly read the information on the tire pressure sensor barcode piece and transmit this information to the tire pressure monitoring device, thereby enabling real-time monitoring and management of the tire pressure sensor. In this way, firstly, through the precise association of ID information, the accurate identification of each tire pressure sensor in actual use is ensured, thereby improving the reliability of monitoring. Secondly, the EOL-based testing method can effectively reduce the risk of confusion in subsequent maintenance and simplify the positioning process. Finally, the binding and calibration of the tire pressure sensor can be completed in the production stage, which can significantly improve the stability and response speed of the tire pressure monitoring device during use, thereby effectively ensuring driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a tire pressure sensor position calibration system according to one embodiment;

[0021] Figure 2 is a structural schematic diagram of a tire pressure sensor position calibration system in yet another embodiment;

[0022] Figure 3 is a schematic structural diagram of a tire pressure sensor position calibration system in another embodiment;

[0023] Figure 4 A schematic diagram of the numbering of tire pressure sensors on both sides of a vehicle in one embodiment;

[0024] Figure 5 is a structural diagram of a tire pressure sensor position calibration system in yet another embodiment;

[0025] 1. Position calibration system; 10. EOL subsystem; 20. Tire pressure sensor; 21. Tire pressure sensor barcode component; 30. Tire pressure monitoring device; 11. Barcode scanning device; 12. Data storage subsystem; 13. EOL server; 14. EOL terminal. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0027] In view of the problems in the prior art, the embodiment of the present application provides a tire pressure sensor position calibration system based on EOL (End of Line), referring to Figure 1As shown, the position calibration system 1 is mainly composed of an EOL subsystem 10 , a tire pressure sensor 20 , a tire pressure sensor barcode component 21 and a tire pressure monitoring device 30 , and is intended to improve the accuracy and reliability of the position calibration of the tire pressure sensor 20 . The EOL subsystem 10 may be a system for testing and calibrating products at the final stage of a production line to ensure that their functionality and performance meet standards before shipment. A tire pressure sensor 20 may be installed inside a tire to detect tire pressure and temperature and output the pressure and temperature information via wireless high-frequency signals. Each tire may be equipped with a tire pressure sensor 20, each having a unique tire pressure sensor ID to distinguish between different tire pressure sensors 20. The tire pressure sensor ID may be encoded using an 8-digit hexadecimal number, and the first digit of the tire pressure sensor ID may be an Arabic numeral 2 or 4 to distinguish the vehicle's chassis number. The tire pressure sensor barcode element 21 may be a barcode label located at a predetermined position on the tire corresponding to the tire where the tire pressure sensor 20 is located, recording the unique ID information of the tire pressure sensor 20 and related tire information. The tire pressure monitoring device 30 may be a data management device within the vehicle to receive and process data from the tire pressure sensor 20, enabling the driver to understand the tire status in real time.

[0028] In this position calibration system 1, tire pressure sensors 20 correspond one-to-one with tire pressure sensor barcode elements 21. Each tire pressure sensor 20 corresponds to at least one tire pressure sensor barcode element 21 that records its ID information. The EOL subsystem 10 is communicatively connected to the tire pressure monitoring device 30. The EOL subsystem 10 can obtain the tire pressure sensor 20's ID information and tire information from the tire pressure sensor barcode element 21. The tire information can be used to identify a specific tire, such as whether the tire pressure sensor ID0 is installed on the left or right tire of the first axle. The EOL subsystem 10 can also transmit the obtained tire pressure sensor 20 ID information and tire information to the tire pressure monitoring device 30.

[0029] The tire pressure monitoring device 30 can be mounted on the vehicle's chassis frame to ensure a secure installation and effective connection and coordination with other vehicle components. The tire pressure monitoring device 30 can interact with the EOL subsystem 10 and other related devices via a data connection, storing ID information and tire information obtained from each tire pressure sensor 20.

[0030] Furthermore, in the position calibration system 1, the tire pressure monitoring device 30 can be connected to the tire pressure sensors 20 via wireless or wired connections to receive real-time tire status data from each tire pressure sensor 20. The tire pressure monitoring device 30 can then determine the specific tire corresponding to the tire status data based on the stored ID information and tire information. The tire status data for each tire can then be broadcast via the CAN bus to other electronic systems in the vehicle, enabling information sharing and coordination.

[0031] Using the tire pressure sensor 20 position calibration system 1 disclosed in this application, the tire pressure sensor 20 can be calibrated via the end-of-life (EOL) subsystem 10. The ID information recorded on the tire pressure sensor barcode 21 can be used to effectively associate the tire pressure sensor 20 with its corresponding tire. Specifically, before a vehicle leaves the factory, the EOL subsystem 10 can quickly read the information on the tire pressure sensor barcode 21 and transmit this information to the tire pressure monitoring device 30, thereby enabling real-time monitoring and management of the tire pressure sensor 20. This ensures accurate identification of each tire pressure sensor 20 during actual use, improving monitoring reliability. Furthermore, the EOL-based testing method effectively reduces the risk of confusion during subsequent maintenance and simplifies the positioning process. Finally, the binding and calibration of the tire pressure sensor 20 can be completed during the production phase, significantly improving the stability and response speed of the tire pressure monitoring device 30 during use, thereby effectively ensuring driving safety.

[0032] In one embodiment, the relative positional relationship between the tire pressure sensor barcode element 21 and the tire pressure sensor 20 is crucial in the position calibration system 1. The distance between the tire pressure sensor barcode element 21 and the tire where the tire pressure sensor 20 is located can be set to be less than a preset threshold. This preset threshold can be a maximum allowable distance. Exceeding this maximum allowable distance may affect the accuracy and stability of information reading. This ensures that the tire pressure sensor barcode element 21 and the tire pressure sensor 20 always remain within a valid identification range. It will be understood that the tire pressure sensor barcode element 21 can record the ID information of the tire pressure sensor 20, and the deployment location of the tire pressure sensor barcode element 21 can be used to reflect the tire information corresponding to the tire pressure sensor 20. When the distance between the tire pressure sensor barcode element 21 and the tire where the tire pressure sensor 20 is located is less than the preset threshold, the EOL subsystem 10 can directly obtain the tire information of the tire pressure sensor 20 based on the deployment location of the tire pressure sensor barcode element 21.

[0033] In one embodiment, in the position calibration system 1, the tire pressure sensor barcode element 21 can be positioned on the tire surface where the tire pressure sensor 20 is located, or on the tire rim. This design provides more configuration options for effectively reading the tire pressure sensor barcode element 21, ensuring that the tire pressure sensor barcode element 21 is always in an easily identifiable position under different tire designs and layouts. Firstly, the placement of the tire pressure sensor barcode element 21 is diversified to accommodate different vehicle models and tire types, enhancing the system's versatility and flexibility. Secondly, the optimized position makes the tire pressure sensor barcode element 21 less susceptible to external interference during operation, ensuring the stability and accuracy of information acquisition.

[0034] In one embodiment, reference Figure 2 As shown, the EOL subsystem 10 may include a barcode scanning device 11, which is used to scan the tire pressure sensor barcode element 21 at a preset position to obtain the ID information and tire information of the tire pressure sensor 20. The barcode scanning device 11 can be a device for reading barcodes or QR codes, such as a laser scanner, image recognition device, etc. In the position calibration system 1, the EOL subsystem 10 can establish a one-way data transmission relationship with the tire pressure sensor barcode element 21 through the barcode scanning device 11. The barcode scanning device 11 can be deployed on the production line and automatically scan the tire pressure sensor barcode element 21 at the preset position when the tire pressure sensor barcode element 21 is installed on the tire, reading the information stored in the tire pressure sensor barcode element 21. The barcode scanning device 11 can then transmit the read tire pressure sensor 20 ID information and related tire information to the EOL subsystem 10, providing basic data for subsequent tire pressure monitoring. In this way, by introducing the code scanning device 11, based on laser or image recognition technology, the information on the tire pressure sensor barcode part 21 can be identified in a very short time and converted into electronic data, greatly improving the efficiency of information acquisition; secondly, by automating information acquisition at a preset position, the complexity of manual operation can be reduced and the accuracy and consistency of the data can be ensured.

[0035] Furthermore, the production site can be equipped with a scanning device 11 on each side of the vehicle to efficiently read the information on the tire pressure sensor barcode piece 21. Specifically, the left scanning device 11 can be used to obtain information on the tire pressure sensor barcode piece 21 on the left side of the vehicle, and the right scanning device 11 can be used to obtain information on the tire pressure sensor barcode piece 21 on the right side of the vehicle. The scanning order of the scanning device 11 for the tire pressure sensor barcode piece 21 on the vehicle is designed to be from the front to the rear of the vehicle to ensure the systematic and consistent process of information acquisition. For example, the left scanning device 11 can be used first to scan from the front of the vehicle backward in sequence to ensure that each tire pressure sensor barcode piece 21 is accurately read. During the scanning process, after the left scanning device 11 completes the scanning of the left tire pressure sensor barcode piece 21, it switches to the right scanning device 11 to scan the right tire pressure sensor barcode piece 21 in the same front-to-back order. For wheels equipped with dual tires, the barcode scanning device 11 can prioritize scanning the inner tire's tire pressure sensor barcode element 21, followed by the outer tire's tire pressure sensor barcode element 21. This standardized scanning sequence—front-to-back, left-to-right, and inside-to-outside—reduces the risk of missing or duplicate readings, improving the reliability of the entire calibration process. This structured scanning approach also reduces operator workload, improves overall production line efficiency, and ensures that tire pressure monitoring systems are successfully calibrated before each vehicle leaves the factory.

[0036] In one embodiment, reference Figure 3 As shown, the EOL subsystem 10 also includes a data storage subsystem 12, which is communicatively connected to the barcode scanning device 11 and is configured to receive and store the ID information and tire information of the tire pressure sensor 20 uploaded by the barcode scanning device 11. The data storage subsystem 12 can be an MES-PDM system, a combination of a manufacturing execution system (MES) and a product data management (PDM) system, used to manage data and information during the production process. In the position calibration system 1, a communication connection can be established between the data storage subsystem 12 and the barcode scanning device 11. After reading the information from the tire pressure sensor barcode 21, the barcode scanning device 11 can upload the acquired ID information and tire information to the data storage subsystem 12. This allows the data storage subsystem 12 to receive and store the ID information and tire information of the tire pressure sensor 20 uploaded by the barcode scanning device 11.

[0037] Furthermore, in the position calibration system 1, the data storage subsystem 12 may include multiple data storage areas to facilitate storage of the ID information and tire information of the tire pressure sensors 20 at different locations. Specifically, the ID information of the left and right tire pressure sensors 20 of the vehicle may be stored in the left tire pressure sensor ID storage area and the right tire pressure sensor ID storage area, respectively, to ensure orderly management of the information and facilitate subsequent access. For example, referring to Figure 4As shown, Ln corresponds to the tire pressure sensor 20 on the left side of the vehicle, and Rn corresponds to the tire pressure sensor 20 on the right side of the vehicle. The data in the left storage area is numbered from L1 to L8, and the data in the right storage area is numbered from R1 to R8. Each ID information is stored in ascending order, and each ID occupies 4 bytes of storage space. In this way, the design of multiple data storage areas can achieve efficient classification of information from tire pressure sensors 20 in different locations on the vehicle, facilitating rapid retrieval and management, and improving system responsiveness. The numbering method ensures that the ID information is stored in order, reducing the complexity of data search and improving information processing speed.

[0038] In one embodiment, reference Figure 5 As shown, the EOL subsystem 10 also includes an EOL server 13 and an EOL terminal 14. The EOL server 13 is used to obtain and integrate the ID information and tire information of the tire pressure sensor 20. The EOL terminal 14 is used to obtain the integrated ID information and tire information of the tire pressure sensor 20 from the EOL server 13 and enter the ID information and tire information into the tire pressure monitoring device 30.

[0039] In the position calibration system 1, a communication connection can be established between the EOL server 13 and the EOL terminal 14. The EOL server 13 can obtain the ID information and tire information of the tire pressure sensor 20 from the data storage subsystem 12, integrate and process the information, and then transmit the integrated information to the EOL terminal 14. The EOL terminal 14 then enters this information into the tire pressure monitoring device 30, forming a complete data flow chain. In this way, the data integration capabilities of the EOL server 13 enable centralized management of tire pressure sensor 20 information. After obtaining information from the barcode scanning device 11 and / or the data storage subsystem 12, the EOL server 13 can organize, filter, and optimize this information to form clear, easy-to-use integrated data.

[0040] Specifically, the integration principle can be based on the vehicle model and the number x of tire pressure sensors 20, and integration can be performed in the order of Table 1, where "Ln, n=1, 2, 3..." represents the ID information of the nth tire pressure sensor 20 on the left side of the vehicle, and "Rn, n=1, 2, 3..." represents the ID information of the nth tire pressure sensor 20 on the right side of the vehicle. The integrated data can be stored in a 64-byte data area, where the default value of each ID field is 0xFFFFFFFF.

[0041] Table 1:

[0042]

[0043] Furthermore, in the position calibration system 1, the EOL terminal 14 can establish a wireless network connection with the tire pressure monitoring device 30. This connection allows the EOL terminal 14 to send the integrated tire pressure sensor ID information and tire information to the tire pressure monitoring device 30 via wireless signals, ensuring fast and reliable data transmission.

[0044] In another embodiment, the EOL terminal 14 can communicate with the tire pressure monitoring device 30 through a physical communication interface (such as the vehicle's OBD port), obtain relevant data of the tire pressure sensor ID integrated in the EOL server 13 through wireless WIFI, and complete the matching calibration of the ID information of the tire pressure sensor 20 and the position of the vehicle tire in the tire pressure monitoring device 30 according to the UDS protocol, thereby achieving a one-to-one correspondence between the tire pressure sensor ID and the layout position of the tire pressure sensor 20.

[0045] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A tire pressure sensor position calibration system based on EOL, characterized in that: The position calibration system includes at least an EOL subsystem, a tire pressure sensor, a tire pressure sensor barcode component, and a tire pressure monitoring device, wherein: The tire pressure sensor is arranged in a tire of the vehicle, and each tire pressure sensor corresponds to at least one tire pressure sensor barcode component; The tire pressure sensor barcode piece is arranged at a preset position corresponding to the tire where the tire pressure sensor is located, and the tire pressure sensor barcode piece records the ID information of the tire pressure sensor; The EOL subsystem is in communication with the tire pressure monitoring device, and is configured to obtain the ID information and tire information of the tire pressure sensor from the tire pressure sensor barcode component, and send the ID information and tire information to the tire pressure monitoring device.

2. The position calibration system according to claim 1, characterized in that: The closest distance between the tire pressure sensor barcode component and the tire where the tire pressure sensor is located is less than a preset threshold.

3. The position calibration system according to claim 2, characterized in that: The tire pressure sensor barcode component is arranged on the tire where the tire pressure sensor is located and / or on the rim of the tire where the tire pressure sensor is located.

4. The position calibration system according to claim 1, characterized in that: The EOL subsystem includes a barcode scanning device, which is used to scan the tire pressure sensor barcode piece at the preset position to obtain ID information and tire information of the tire pressure sensor.

5. The position calibration system according to claim 4, characterized in that: The EOL subsystem further includes a data storage subsystem, which is communicatively connected to the code scanning device and is configured to receive and store the ID information of the tire pressure sensor and the tire information uploaded by the code scanning device.

6. The position calibration system according to claim 5, characterized in that: The data storage subsystem includes at least a plurality of data storage areas, each of which is used to store ID information and tire information of tire pressure sensors at different locations of the vehicle.

7. The position calibration system according to claim 1, characterized in that: The EOL subsystem also includes an EOL server and an EOL terminal. The EOL server is used to obtain and integrate the ID information and tire information of the tire pressure sensor. The EOL terminal is used to obtain the integrated ID information and tire information of the tire pressure sensor from the EOL server and enter the ID information and tire information into the tire pressure monitoring device.

8. The position calibration system according to claim 7, characterized in that: The EOL terminal is connected to the tire pressure monitoring device via a wireless network or a physical communication interface.

9. The position calibration system according to claim 1, characterized in that: The tire pressure monitoring device is arranged on the vehicle chassis frame and is used to store the ID information and tire information.

10. The position calibration system according to claim 1, characterized in that: The tire pressure monitoring device is further configured to receive tire status data sent by the tire pressure sensor, and broadcast the tire status data of each tire via the CAN bus according to the ID information and tire information.

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