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Pressure-sensitive type magnetic-coupling tire pressure detection device

A technology of air pressure detection and magnetic coupling, applied in tire measurement, measurement device, tire parts and other directions, can solve the problems of battery replacement, complex circuit structure, etc., and achieve the effect of simple circuit

Inactive Publication Date: 2016-06-22
HUBEI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that the circuit structure is complicated, and the battery needs to be replaced frequently.

Method used

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  • Pressure-sensitive type magnetic-coupling tire pressure detection device

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Embodiment Construction

[0009] figure 1 As shown: the expansion film 1 is connected and fixed with the inner wall of the gas circuit 10, the expansion film 1 is connected and fixed with the silicon steel sheet 9, the secondary coil 2 is connected and fixed with the closed end of the gas circuit 10, and the primary coil 3 is connected to the maximum current through the AC current circuit 4 The sampling and holding circuit 8 is connected, and the current maximum sampling and holding circuit 8 is connected with the system control circuit 6 through the comparator circuit 5 , and the system control circuit 6 is also connected with the alarm circuit 7 .

[0010] The working principle of the present invention is as follows: the secondary coil 2 is a closed coil. When the tire pressure is at the standard pressure, the expansion of the expansion film 1 makes the silicon steel sheet 9 just in the middle of the secondary coil 2, the secondary coil 2 and the primary coil 3 are magnetically coupled, and the curre...

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Abstract

The invention provides a pressure-sensitive type magnetic-coupling tire pressure detection device. An expansion membrane is fixedly connected with the inner wall of a gas path, the expansion membrane is fixedly connected with a silicon steel sheet, a secondary coil is fixedly connected to the closed end of the gas path, a primary coil is connected with a maximum current sample hold circuit by virtue of an alternating current circuit, the maximum current sample hold circuit is connected with a system control circuit by virtue of a comparator circuit, and the system control circuit is connected with an alarm circuit. Through the arrangement, the online real-time detection of tire pressure is realized, a power supply does not need to be installed in a tire, the circuit is simple, and the installation is convenient.

Description

technical field [0001] The invention relates to a vehicle safety guarantee technology, in particular to a pressure-sensitive magnetic coupling tire air pressure detection device. Background technique [0002] During the running of the vehicle, too low or too high tire pressure will affect the safety of the vehicle, so it is very necessary to develop an online real-time detection system for tire pressure. The existing tire pressure detection system adopts wireless transceiver or electromagnetic. Its disadvantage is that the circuit structure is complicated, and the battery needs to be replaced frequently. Contents of the invention [0003] The purpose of the present invention is to provide a pressure-sensitive magnetic coupling tire air pressure detection device, which uses a silicon steel sheet, a secondary coil, a primary coil, an expansion film and a current maximum sampling and holding circuit for detection of a tire air pressure detection device. The tire air pressur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C23/04G01L17/00
CPCB60C23/0425G01L17/00
Inventor 蔡兵
Owner HUBEI UNIV OF ARTS & SCI