Wireless passive surface acoustic wave strain sensor with sensibilization structure
A strain sensor, surface acoustic wave technology, applied in the direction of using ultrasonic/sonic/infrasonic waves, instruments, measuring devices, etc., can solve the problems of difficult installation and low sensitivity of surface acoustic wave strain sensors, achieve high measurement accuracy, and improve sensitivity. Low, good reliability
Inactive Publication Date: 2018-02-13
INST OF ACOUSTICS CHINESE ACAD OF SCI
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] In order to solve the problem of low sensitivity and difficult installation of the surface acoustic wave strain sensor, the present invention designs and uses a wireless passive surface acoustic wave strain sensor with an enhanced structure
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.
[0029] Such as figure 1 As shown, a wireless passive surface acoustic wave strain sensor fixed module with a sensitivity-enhancing structure provided by the implementation of the present invention is a schematic diagram of a triangular pyramid structure.
[0030] Such as figure 2 As shown, a wireless passive surface acoustic wave strain sensor fixed module with a sensitivity-enhancing structure provided by the implementation of the present invention is a schematic diagram of a rectangular parallelepiped structure.
[0031] Combine figure 1 , figure 2 It is explained that the sensor includes: a first fixed module 1a, a second fixed module 1b, a surface acoustic wave sensor device 2, a matching circuit 3, and an antenna 4; the first fixed module 1a and the second fixed module 1b are of an enhanced sensitivity structure. Wherein, the ma...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a wireless passive surface acoustic wave strain sensor with a sensibilization structure. The wireless passive surface acoustic wave strain sensor comprises a surface acousticwave sensor part, a matching circuit and an antenna, wherein the matching circuit is connected with the surface acoustic wave sensor part; the antenna is arranged on the matching circuit; the surfaceacoustic wave sensor part is provided with a first fixed module and a second fixed module which are respectively of a sensibilization structure. The wireless passive surface acoustic wave strain sensor has the advantages that the sensibilization structure is provided; by changing the distance between the first fixed distance and the second fixed module, or changing the fixing position of the firstfixed module and the second fixed module to the surface acoustic wave sensor part, the sensibilization effect is adjusted, higher measuring accuracy is realized, and the problem of lower sensitivityof the traditional surface acoustic wave strain sensor is relieved; by adopting the design provided by the invention, the structure installation is convenient, the reliability is good, and the structure can be repeatedly use.
Description
Technical field [0001] The invention relates to a surface acoustic wave sensor in acoustic technology, in particular to a wireless passive surface acoustic wave strain sensor with a sensitivity-enhancing structure. Background technique [0002] As a key component of industrial process control, strain sensors are widely used in aerospace, petroleum and petrochemical, electric power, motor vehicles and railways. For example, a real-time monitoring application for the health of helicopter wings. [0003] Traditional strain sensors are generally based on the resistance strain effect. The principle is that when a metal conductor or semiconductor is subjected to an external force, the corresponding strain will cause its resistance to change accordingly. This type of strain sensor is widely used, but there are some problems that need to be solved urgently: the resistance sensitivity of the resistance strain sensor is low, so a bridge must be used to amplify the signal, which leads to co...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01B17/04
CPCG01B17/04
Inventor 王文王毅坚薛蓄峰梁勇
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI