Multi-physical-parameter sensor based on multi-channel surface acoustic wave

A surface acoustic wave, multi-physical quantity technology, applied in the direction of instruments, measuring devices, etc., can solve the problems of not meeting the requirements, the sensor sensing a single physical quantity, etc., to achieve the effect of light weight, reducing the number of sensors, and realizing the effect of sensor networking

Pending Publication Date: 2016-08-24
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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Problems solved by technology

[0005] The physical quantities of power equipment that need to be sensed include temperature, partial discharge, sound, humidity, pressure, vibration, gas, electric field and magnetic field, etc. Existing sensors generally perceive a single physical quantity, which is far from meeting the requirements

Method used

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  • Multi-physical-parameter sensor based on multi-channel surface acoustic wave

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Embodiment Construction

[0022] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] The present invention is oriented to the online monitoring of power equipment. Based on the principle of surface acoustic wave sensing, three sensing channels are fabricated on the piezoelectric substrate. The three sensing channels share the same signal terminal and ground terminal, and the three channels complete the temperature monitoring in parallel. Fusion sensing of various physical quantities such as humidity, gas, etc.

[0024] The system mainly includes reader, transmitting antenna, sensor receiving antenna and sensor chip structure. Among them, the reader has the ability to transmit radio frequency signals and high-precision demodulation of sensor echo signals. The information communication between the reader and the sensor is realized through two narrow-band antennas. The reader must have the ability to transmit sig...

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Abstract

The invention provides a multi-physical-parameter sensor based on multi-channel surface acoustic wave. The sensor comprises an antenna, a signal end, a grounding end and a sensor chip, wherein the antenna is separately connected with the signal end and the grounding end on the sensor chip; the sensor chip comprises a piezoelectric substrate, a signal transmission channel, a surface acoustic wave temperature sensing unit, a surface acoustic wave gas sensing unit and a surface acoustic wave vapor sensing unit; and the signal transmission channel connects the surface acoustic wave temperature sensing unit, the surface acoustic wave gas sensing unit and the surface acoustic wave vapor sensing unit which are arranged in parallel on the piezoelectric substrate. The sensor transmits multiple sensing physical parameters in a wireless mode, thereby realizing sensor networking and further promoting networking of power equipment monitoring.

Description

technical field [0001] The invention relates to an on-line monitoring system of electric power equipment, in particular to a multi-physical quantity sensor based on multi-channel surface acoustic waves. Background technique [0002] With the development of the global energy Internet, the scale of the power grid is getting larger and larger, which requires real-time monitoring and intelligent perception of the status of power equipment, accurate and timely transmission of equipment status information, judgment of equipment operation status, and a strong guarantee for maintaining the security of the power grid. [0003] There are many types and layout points of sensors involved in the condition monitoring of primary equipment such as transformers, circuit breakers, and GIS, and the reliability is uneven. The development of multi-physical quantity fusion sensors is relatively lagging behind. High reliability and miniaturized sensors are imperative. [0004] Using multi-physical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 郑天祥李璐陈硕刘占元侯继彪牛晓晨孙海江叶志齐李春城尉志勇
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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