CN-122008742-A - Tire pressure monitoring system with wireless information transmission

CN122008742ACN 122008742 ACN122008742 ACN 122008742ACN-122008742-A

Abstract

The invention discloses a tire pressure monitoring system with wireless information transmission, which comprises a programmable tire pressure sensor, a hardware-level safety isolation module, a programming tool, a block chain hash traceability module and a multidimensional aging intelligent early warning module. The hardware-level security isolation module realizes physical isolation of the DOT information area and other functional areas in the sensor through the independent storage controller and the hardware firewall. The block chain hash traceability module is composed of a hash generation unit, a alliance chain storage network and a verification unit, wherein the hash generation unit, the alliance chain storage network and the verification unit are arranged in the programming tool, and the block chain hash traceability module is used for carrying out hash uplink and reading verification on DOT information and outputting a verification result. And the multidimensional aging intelligent early warning module acquires corresponding DOT original information according to the verification result, and performs fusion analysis by combining dynamic vehicle condition data acquired by the sensor to generate tire state early warning information. The invention effectively improves the safety, the credibility and the intelligent level of the tire pressure monitoring system.

Inventors

SHEN YONGBO
YANG LIANG
WANG DONG

Assignees

宁波思明汽车附件有限公司

Dates

Publication Date: 20260512
Application Date: 20260205

Claims (10)

1. A tire pressure monitoring system for wireless information transmission, comprising: a programmable tire pressure sensor, the internal memory area of which comprises a DOT information area; The hardware-level safety isolation module is integrated in the programmable tire pressure sensor and comprises an independent storage controller connected with the DOT information area and a hardware firewall, wherein the hardware firewall is configured to check and isolate the instruction accessing the DOT information area so as to realize the physical isolation of the DOT information area and other functional areas of the sensor; The programming tool is in wireless communication connection with the programmable tire pressure sensor and is used for sending an instruction to the programmable tire pressure sensor so as to write or read DOT original information in the DOT information area; the block chain hash traceability module is connected with the programmable tire pressure sensor and the programming tool in a wireless communication mode and comprises: The hash generation unit is used for generating a first hash value according to the DOT original information and the unique hardware identifier of the programmable tire pressure sensor when the programming tool writes the DOT original information; The alliance chain storage network is in communication connection with the hash generation unit and is used for storing the first hash value; the verification unit is arranged in a terminal device, is in communication connection with the alliance chain storage network, and is used for generating a second hash value according to the read information when the DOT original information is read, and outputting a verification result by comparing and verifying the second hash value with a corresponding first hash value acquired from the alliance chain storage network; The multidimensional aging intelligent early warning module is arranged in the terminal equipment, is connected with the blockchain hash traceability module and the programmable tire pressure sensor in a communication manner, and is used for acquiring corresponding DOT original information according to a verification result of the verification unit, acquiring dynamic vehicle condition data acquired by the programmable tire pressure sensor, and analyzing static parameters in the DOT original information by fusing the dynamic vehicle condition data to generate tire state early warning information.
2. The wireless information transmission tire pressure monitoring system of claim 1, wherein the independent memory controller comprises a first memory controller and a second memory controller that are logically isolated; The hardware firewall is respectively connected with the first storage controller and the second storage controller; The first storage controller is connected with a BOOT program area and an APP program area in the programmable tire pressure sensor and is used for controlling data reading and writing of the BOOT program area and the APP program area; the second storage controller is connected with the DOT information area and used for controlling data reading and writing of the DOT information area; The hardware firewall is configured to receive an access instruction from the programming tool, perform identity verification and operation authority judgment on the access instruction, and route the access instruction to the second storage controller to access the DOT information area only when the access instruction passes judgment, and simultaneously block a direct access request to the DOT information area initiated by the APP program area.
3. The wireless information transmission tire pressure monitoring system of claim 1, wherein the DOT information area comprises a one-time programmable memory area and a rewritable memory area; The one-time programmable memory area is used for writing and permanently storing core parameters in the DOT original information; The rewritable storage area is used for storing expansion parameters in the DOT original information.
4. The tire pressure monitoring system of wireless information transmission according to claim 1, wherein the hash generation unit, when writing the DOT raw information, is configured to perform the following steps to generate the first hash value: Acquiring DOT original information, a unique hardware identifier of the programmable tire pressure sensor, a time stamp of a writing operation and operator identity information; Carrying out data fusion on the DOT original information, the unique hardware identifier, the time stamp and the operator identity information; and inputting the fused data into a preset encryption hash algorithm to generate the first hash value.
5. The wireless information transmission tire pressure monitoring system of claim 1, wherein the alliance chain storage network is an alliance chain jointly constructed by a vehicle enterprise node, a tire factory node and a maintenance agency node as authorization nodes; each of the authorizing nodes is configured to perform the same preset consensus algorithm on the received first hash value to agree on a state, and to store the agreed first hash value and associated trace-source operation record each.
6. The wireless information transmission tire pressure monitoring system according to claim 1, wherein the verification unit is configured to perform a verification operation when reading the DOT original information, the verification operation including: acquiring the DOT original information read currently and the unique hardware identifier from the programmable tire pressure sensor; inquiring and acquiring the corresponding first hash value based on the unique hardware identifier from the alliance chain storage network; Generating the second hash value based on at least the currently read DOT original information and the unique hardware identifier; comparing the second hash value with the acquired first hash value; if the comparison results are consistent, judging that the DOT original information is complete and reliable, and outputting a verification result representing that verification is passed; if the comparison results are inconsistent, triggering a preset exception handling flow, and outputting a verification result representing that the verification is not passed.
7. The wireless information transmission tire pressure monitoring system according to claim 1, wherein the dynamic vehicle condition data includes tire pressure data and tire temperature data collected by the programmable tire pressure sensor, a tire accumulated driving distance converted based on a vehicle speed signal, and road condition jolt level data collected and quantized by a vibration sensor built in the sensor.
8. The wireless information transmission tire pressure monitoring system of claim 7, wherein the multi-dimensional aging intelligent pre-warning module generates the tire condition pre-warning information by performing the steps of: Calculating a first basic aging coefficient of the used time length of the tire based on the production date in the DOT original information passing the verification; Calculating a dynamic loss coefficient based on the accumulated driving mileage and the road condition jolt grade data and combining abnormal frequencies determined by analysis of the tire pressure data and the tire temperature data, and correcting the first basic aging coefficient according to the dynamic loss coefficient to obtain a corrected aging coefficient; And comparing the corrected aging coefficient with a safe use threshold value determined based on static parameters in the DOT original information, and generating early warning information containing a recommended replacement time window or an adjustment prompt according to a comparison result.
9. The wireless information transmission tire pressure monitoring system of claim 8, wherein the multi-dimensional aging intelligent pre-warning module is further connected to and invokes a preset tire aging database comprising aging attenuation models and wear thresholds for different tire specifications and brands; The early warning analysis comprises the step of matching a corresponding aging attenuation model and an abrasion threshold value from the tire aging database according to the tire specification and brand information in the DOT original information so as to be used for the early warning analysis.
10. The wireless information transmission tire pressure monitoring system of claim 1, wherein the programming tool is configured to integrate an operation interface, the integrated operation interface further provides a call entry for a hash verification operation of the blockchain hash traceability module and a presentation area for the tire state early warning information output by the multi-dimensional aging intelligent early warning module on the basis of providing options for writing and reading of the DOT original information.

Description

Tire pressure monitoring system with wireless information transmission Technical Field The invention relates to the technical field of Tire Pressure Monitoring Systems (TPMS) and vehicle information safety, in particular to a tire pressure monitoring system with wireless information transmission. Background Tire Pressure Monitoring Systems (TPMS) are an important component of active safety systems for vehicles, and generally collect operating parameters such as pressure and temperature of a tire through a sensing unit arranged inside the tire and transmit the operating parameters to a vehicle-mounted or external terminal in a wireless manner so as to assist a user or a vehicle control system in grasping the state of the tire. In some application scenarios, the sensing unit is further configured to store data related to the identity and production information of the tire, so as to support functions such as tire identification, maintenance management, and life cycle tracking. With the continuous improvement of the safety management and the intelligent level of vehicles, the reliable storage, the reliable transmission and the effective utilization of the tire related information are gradually key attention points in the system design. However, existing tire pressure monitoring systems still face various technical challenges in terms of information security, data reliability, and information depth utilization. Firstly, at the information storage level, a plurality of types of functional modules and storage areas are generally integrated in a sensing unit, and different types of data coexist in the same hardware environment. If an effective hardware-level isolation mechanism is lacking, a logic or physical coupling risk is easy to generate between the key identity information and other functional data, once the system is subjected to abnormal access, misoperation or malicious interference, the integrity and reliability of the key data can be difficult to guarantee, and the subsequent identification and management functions are affected. Second, in terms of information reliability, tire related information may undergo multiple writing, reading, and transmission processes over its period of use. If the system only focuses on the transmission or storage of information and lacks a unified and continuous verification and tracing mechanism, the authenticity, consistency and historical state of the information are difficult to effectively verify, and related data may have imperceptible change risks in the use process, so that the credibility of the related data serving as a management basis is weakened. Again, at the information application level, the existing system often relies on simple comparison of single running parameters or static information acquired in real time for judging the tire state, and the information utilization mode is relatively limited. Because the evolution of the tire state is generally influenced by the comprehensive effects of various running conditions and inherent parameters, if the collaborative analysis capability of static identity information and dynamic running data is lacking, the system is difficult to make prospective judgment on the aging, performance degradation or potential risk of the tire, and the ever-increasing demands on safety pre-warning and fine management cannot be met. Therefore, how to realize safe isolation storage, whole-process credibility verification and intelligent analysis and early warning based on multi-source data fusion of tire key information on the premise of considering system realizability and existing architecture suitability has become one of the technical problems to be solved in the field of tire pressure monitoring systems. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a tire pressure monitoring system with wireless information transmission, which is used for synchronously realizing tamper-proof storage of key information of a tire, trusted verification of a full life cycle and prospective early warning of an aging state based on multi-source data fusion through a three-in-one collaborative technical architecture of hardware-level safety isolation, block chain hash traceability and multi-dimensional intelligent early warning. In order to achieve the above purpose, the invention provides a tire pressure monitoring system with wireless information transmission, which comprises: a programmable tire pressure sensor, the internal memory area of which comprises a DOT information area; The hardware-level safety isolation module is integrated in the programmable tire pressure sensor and comprises an independent storage controller connected with the DOT information area and a hardware firewall, wherein the hardware firewall is configured to check and isolate the instruction accessing the DOT information area so as to realize the physical isolation of the DOT information area and other functional areas of the sen