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Tire pressure detection method and device

A tire pressure detection and tire technology, which is used in measurement devices, tire measurement, transportation and packaging, etc., can solve the problems of high cost, complicated replacement and maintenance, and achieve the effect of reducing the testing cost and making tire pressure testing simple.

Active Publication Date: 2019-10-18
ALLWINNER TECH CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a tire pressure detection method and device for the traditional tire pressure detection system, which is relatively complicated to install, replace and maintain, and has relatively high costs.

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  • Tire pressure detection method and device

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Embodiment Construction

[0039] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0040] For example, a method for detecting tire pressure includes: transmitting a first ultrasonic wave to the tire according to the thickness of the tire wall; receiving a second ultrasonic wave reflected by the tire wall; acquiring the sound of the first ultrasonic wave pressure and the sound pressure of the second ultrasonic wave; calculate and obtain the reflection coefficient of the tire wall according to the sound pressure of the first ultrasonic w...

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Abstract

The invention relates to a tire pressure detection method and device. The method comprises the steps as follows: transmitting a first ultrasonic wave to a tire according to the thickness of the tire wall of the tire; receiving a second ultrasonic wave reflected by the tire wall of the tire; acquiring the sound pressure of the first ultrasonic wave and the sound pressure of the second ultrasonic wave; calculating the reflection coefficient of the tire wall according to the sound pressure of the first ultrasonic wave and the sound pressure of the second ultrasonic wave; calculating the density of air in the tire according to the reflection coefficient of the tire wall; calculating the pressure of the air in the tire according to the ratio of the density of ambient air to the density of the air in the tire as well as the pressure of the ambient air. Components are not required to be mounted on the tire through transmission and receiving of ultrasonic waves, the tire is used for reflectingthe ultrasonic waves, and non-contact tire pressure detection is realized through calculation of the sound pressure of the ultrasonic waves, so that tire pressure detection is more convenient and quicker, and the detection cost is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of tire pressure detection, in particular to a tire pressure detection method and device. Background technique [0002] The tire pressure monitoring system (Tire Pressure Monitoring System, TPMS) is a wireless transmission technology that uses a high-sensitivity miniature wireless sensor device fixed in the car tire to collect data such as car tire pressure while driving or stationary, and The data is transmitted to the host computer in the cab, and relevant data such as tire pressure and temperature are displayed in digital form in real time, and when the tire is abnormal (preventing tire blowout), it will remind the driver to give an early warning in the form of buzzer or voice. The active safety system has a great effect on safe driving and energy saving and emission reduction. High-end models are equipped with tire pressure detection equipment. [0003] With the advancement of technology, tire pressure ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C23/02G01L11/06G01L17/00
Inventor 黄占喜
Owner ALLWINNER TECH CO LTD
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