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Ultra-thin passive wireless acoustic surface wave sensor

A surface acoustic wave, passive wireless technology, applied in the direction of antenna support/mounting device, radiation element structure, etc., can solve the problems of large sensor size and inconvenient use, and achieve easy maintenance, simple structure, and various installation methods the effect of

Inactive Publication Date: 2013-11-27
CHANGZHOU SMARTSAW SENSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, the surface acoustic wave sensor has generally used external helical antennas, etc., making the size of the sensor generally too large, which limits its application in some environments with small installation spaces; and this split surface acoustic wave sensor, inconvenient to use

Method used

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  • Ultra-thin passive wireless acoustic surface wave sensor
  • Ultra-thin passive wireless acoustic surface wave sensor
  • Ultra-thin passive wireless acoustic surface wave sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, an ultra-thin passive wireless surface acoustic wave sensor is characterized in that: it includes a PCB substrate 1, a microstrip antenna 2 and a surface acoustic wave sensor chip 3, and the microstrip antenna 2 and the surface acoustic wave sensor chip 3 They are all arranged on the PCB substrate 1 , and the microstrip antenna 2 is connected with the surface acoustic wave sensor chip 3 .

[0023] The microstrip antenna 2 of the present invention has a sheet structure, and is in the shape of a square, or a circle, or a ring. Of course, it is not limited thereto, and the microstrip antenna 2 can also be designed into other various irregular shapes and printed on the PCB substrate 1 under the premise of ensuring that it works in the required frequency band. The microstrip antenna 2 can work in different frequency bands such as 433MHz, 1.8GHz or 2.4GHz.

[0024] The surface acoustic wave sensor chip 3 of the present invention is a surface acous...

Embodiment 2

[0031] Such as figure 2 As shown, the difference from Embodiment 1 is that it also includes a housing 5 and a housing cover 4 that are hermetically connected to each other, and the PCB substrate 1, the microstrip antenna 2 and the surface acoustic wave sensor chip 3 are all arranged in the housing 5 Inside. Other structures of embodiment 2 are the same as embodiment 1.

[0032] The casing 5 and the casing cover 4 of the present invention are respectively a metal casing and a ceramic casing, or are respectively a metal casing and a plastic casing.

[0033] The invention not only has a simple and compact structure, but also integrates the microstrip antenna and the surface acoustic wave sensor chip on the PCB substrate, so that the occupied space is also small, so that it can be applied to applications with narrow installation space.

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Abstract

The invention relates to an ultra-thin passive wireless acoustic surface wave sensor. The ultra-thin passive wireless acoustic surface wave sensor is characterized by comprising a PCB, a micro-strip antenna and an acoustic surface wave sensor chip. Both the micro-strip antenna and the acoustic surface wave sensor chip are arranged on the PCB, and the micro-strip antenna is connected with the acoustic surface wave sensor chip. The ultra-thin passive wireless acoustic surface wave sensor is simple and compact in structure, and small in occupied space even though the antenna is provided.

Description

technical field [0001] The invention specifically relates to an ultra-thin passive wireless surface acoustic wave sensor. Background technique [0002] The existing passive wireless surface acoustic wave sensor has the characteristics of passive wireless, which makes it applicable to special environments such as high temperature and high pressure, strong magnetism and electricity, flammable and explosive, and high-speed rotation. For a long time, the surface acoustic wave sensor has generally used external helical antennas, etc., making the size of the sensor generally too large, which limits its application in some environments with small installation spaces; and this split surface acoustic wave sensor, It is also inconvenient to use. Contents of the invention [0003] The object of the present invention is to provide an ultra-thin passive wireless surface acoustic wave sensor that is not only simple and compact in structure, but also takes up little space with There ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/22H01Q1/38
Inventor 卢小荣高翔陈卓辉刘文
Owner CHANGZHOU SMARTSAW SENSING TECH
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