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A passive wireless miniature tire pressure sensor

A tire pressure sensor, passive wireless technology, used in tire measurement, tire parts, transportation and packaging, etc., can solve the problems of new technology standards and requirements that cannot meet energy saving and environmental protection, high use and maintenance costs, and large volume and weight. and other problems to achieve the effect of reducing system complexity and energy requirements, removing battery power, and improving measurement accuracy

Inactive Publication Date: 2016-03-30
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The active tire pressure sensor needs a built-in battery to provide energy, and its volume and weight are relatively large. It is inconvenient to install, has a limited life, and has a single function. Replacing the battery will lead to high maintenance costs and environmental pollution problems. It is no longer possible. Meet new technology standards and requirements for energy saving and environmental protection

Method used

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  • A passive wireless miniature tire pressure sensor
  • A passive wireless miniature tire pressure sensor
  • A passive wireless miniature tire pressure sensor

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0028] see Figure 1 ~ Figure 3 , a passive wireless miniature tire pressure sensor, including an upper plate and a lower base plate, the upper plate is provided with a multi-layer composite elastic film sensitive to external pressure, a surface acoustic wave device is provided in the multi-layer composite elastic film, and there is a surface acoustic wave The device includes a transducer and interdigital electrodes, and a micro-antenna coupled with a surface acoustic wave device is arranged on the lower substrate.

[0029] Further, the multi-layer composite film includes an upper electrode layer and a lower electrode layer, a first insulating layer is arranged between the upper electrode layer and the lower electrode layer, and a second insulating layer is arranged below the lower electrode ...

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Abstract

The invention discloses a passive wireless miniature tire pressure sensor which comprises an upper-layer plate and a lower-layer bottom plate. Multilayer composite elastic films which are sensitive to external pressure are arranged on the upper-layer plate. A surface acoustic wave device is arranged in the multilayer composite elastic films. The surface acoustic wave device comprises an energy converter and interdigital electrodes. A miniature antenna coupled with the surface acoustic wave device is arranged on the lower-layer bottom plate. The passive wireless miniature tire pressure sensor can be implanted in the inside of a tire to work, can independently complete tasks of energy capture and pressure monitoring, achieves pressure measurement and result transmission for the tire in a passive wireless mode, and has the advantages of small size, light weight, no pollution, energy conservation, environment protection and the like.

Description

technical field [0001] The invention belongs to the technical field of tire pressure sensors and relates to a passive wireless miniature tire pressure sensor. Background technique [0002] The tire pressure monitoring system monitors changes in tire pressure and prevents tire blowout accidents through early warning, so as to protect the stability of the vehicle and the safety of the drivers and passengers. The tire pressure monitoring sensor is the core component of the whole system, and its working performance directly determines the accuracy and reliability of the monitoring system. According to the configuration, the tire pressure sensor can be divided into two types: active type and passive type. Active sensors need to be powered by batteries to meet the energy needs of the sensor; passive sensors rely on external energy coupling to work. [0003] At present, the tire pressure sensors commercially available in the market are all active types, that is, the pressure sens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C23/04
Inventor 王小章张群明王朝晖郑腾飞
Owner XI AN JIAOTONG UNIV
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