Tire pressure monitoring method and system based on wireless sensor

A tire pressure monitoring system and wireless sensor technology, applied in tire measurement, tire parts, vehicle parts, etc., can solve the problems of traffic accidents, safety hazards, attacking TPMS, etc., and achieve the effect of resisting fake attacks and improving reliability
CN102700368AInactive Publication Date: 2012-10-03JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
JIANGSU UNIV
Publication Date
2012-10-03
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a tire pressure monitoring method and system based on a wireless sensor, wherein the tire pressure monitoring method comprises the following steps of: generating a code by a central control unit of the TPMS (Tire Pressure Monitoring System), and sending the code into the wireless sensor in a wireless way; receiving a rolling step by the wireless sensor, and sending a data frame to the central control unit of the TPMS by adopting a fixed data frame length; sending the data frame to the central control unit of the TPMS by the wireless sensor; decoding the data frame received by the central control unit of the TPMS to obtain the wireless sensor ID in the data frame, and judging an impersonation attack. The static ID in the data frame sent by the sensor of the TPMS is changed to be changeable in a dynamic rolling code way under the condition that the hardware cost is not increased, and the rolling step is a random number generated by taking the former tire pressure data as a seed, so that the impersonation attack of external malicious equipment to the TPMS is effectively resisted, and the reliability in the operation of the TPMS is improved.
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Description

technical field

[0001] The invention relates to the technical field of automotive electronic products, in particular to a tire pressure monitoring method and system based on a wireless sensor. Background technique

[0002] When a car is running, tire failure is an important cause of sudden serious traffic accidents. The tire pressure monitoring system TPMS (Tire Pressure Monitoring System) is composed of a sensor installed in each tire of the vehicle (integrated wireless transmission), a wireless signal receiving antenna and a control module installed on the vehicle body (integrated wireless reception). The sensor can collect information such as tire pressure, temperature, and motion status in real time during driving, and then send the collected data to the TPMS control module through wireless communication. When an abnormal situation occurs, the control module will give an alarm in time to effectively prevent tire blowouts .

[0003] The development of science and techno...

Claims

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