Method for improving stability of tire pressure monitor and tire pressure monitor applying method

Abstract

The invention provides a method for improving the stability of a tire pressure monitor, and relates to the field of automobile parts. The situation that the crystal oscillator frequency changes and consequently tire pressure data transmission is not smooth due to the fact that the tire temperature is too high is corrected in time based on the principle that the crystal oscillator frequency can change along with the temperature change and the characteristic that the change curve of the crystal oscillator frequency changes in a similar linear mode. The data transmitting frequency can be adjusted, the power supply energy of the tire pressure sensor is saved, the signal error rate is reduced, the reliability and the stability of the tire pressure sensor are improved and vehicle accidents caused by faults of automobile tires are reduced in combination with actual road conditions.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to a method for improving the stability of a tire pressure monitor. Background technique [0002] The tire pressure monitor is an indispensable auto accessory for the automobile industry to ensure the safe operation of automobiles. In the prior art, the tire pressure monitor adopts non-destructive testing and wireless data transmission methods for tire pressure monitoring. Under normal circumstances and in the laboratory environment, the stability of ordinary tire pressure monitors is very good, there are few bit errors, and the cost and reliability are also high. However, for most ordinary or low-grade tire pressure monitors, when the car is running for a period of time, as the temperature of the tires rises, the bit error rate of the wireless transmission of the tire pressure monitor also increases, mainly because its wireless transmission part The crystal oscillator is caused by freque...

AI Technical Summary

Problems solved by technology

However, for most ordinary or low-grade tire pressure monitors, when the car is running for a period of time, as the temperature of the tires rises, the bit error rate of the wireless transmission of the tire pressure monitor also increases, mainly because its wireless transmission part The crystal oscillator is affected by the frequency drift caused by the temperature

[0003] Due to the existence of the above problems, and the working environment of the tire pressure monitor itself is in a high-speed rotation and high temperature state, most of them are relatively harsh, which can easily lead to frequency drift of the tire pressure monitor, and the tire pressure display device and alarm device in the car cannot accurately receive The tire pressure information sent by the sensor in the tire makes it impossible to detect abnormalities in time, which in turn leads to more serious consequences such as car accidents

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