TPMS (Tire Pressure Monitor System) performance testing device and testing method

Abstract

The invention discloses a TPMS (Tire Pressure Monitor System) performance testing device and a testing method, which are used for testing the working performance of a sensor arranged in a tire and a receiver arranged outside the tire in a TPMS. The testing device comprises a tire internal work environment simulation device provided with the sensor in a to-be-tested TPMS, a wireless receiver for receiving signals of a wireless transmitter arranged inside the tire internal work environment simulation device, a processor for processing received data, and related software. The testing method utilizes the device to test the TPMS. The device has simple structure and testing method, is simple and convenient for connection and testing use, and can conduct intelligent test and intuitively obtain specific performance parameters.

Description

technical field [0001] The invention relates to a product performance testing device, in particular to a testing device for testing TPMS arranged in automobile tires. Background technique [0002] Tire Pressure Monitoring System (TPMS), English Tire Pressure Monitor System. Its function is to automatically monitor the tire pressure in real time while the car is running, and to alarm the tire leakage and low air pressure to ensure driving safety. [0003] Currently, tire pressure monitoring systems are mainly divided into two types: [0004] One is the indirect type (Wheel-Speed ​​Based TPMS, referred to as WSB). This system uses the wheel speed sensor of the automobile ABS system to compare the speed difference between the tires to achieve the purpose of monitoring tire pressure. ABS uses the wheel speed sensor to determine whether the wheels are locked, so as to decide whether to activate the anti-lock braking system. When tire pressure drops, the weight of the vehicle r...

AI Technical Summary

Problems solved by technology

For the direct TPMS, since a sensor is installed in each tire, the sensor transmits the detected pressure value to the outside of the tire through the radio transmission system, and the outside of the tire receives the pressure data through the radio receiving device, and uses the CAN of the car to transmit the data of each tire. Concentrate on the processor for processing. For this system, CAN communication and data processing by the processor have very mature technologies, and there are many detection methods. However, the sensors and wireless transmission systems installed in the tire are in a closed environment and are It works in a high temperature and high pressure environment, so its ability to adapt to the environment is the key to this system. At present, there is no detection system for detecting the performance of the sensor in the car.

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