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Wireless passive rope tension sensor based on surface acoustic waves

A surface acoustic wave, wireless passive technology, applied in the field of sensors, can solve the problems of the active surface acoustic wave sensor having no particular advantages, external influences cannot be measured, and no obvious advantages, etc., and achieves good linearity and installation. Convenient and simple, high-sensitivity effect

Inactive Publication Date: 2014-10-29
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0009] The surface acoustic wave sensor can realize active and passive sensing. Compared with other traditional sensors, the active surface acoustic wave sensor has no obvious advantages; in addition, various external influences cannot be effectively separated from the measured, so there are The advantages of using SAW sensors are not obvious yet

Method used

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  • Wireless passive rope tension sensor based on surface acoustic waves
  • Wireless passive rope tension sensor based on surface acoustic waves
  • Wireless passive rope tension sensor based on surface acoustic waves

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0044] The invention discloses a wireless passive rope tension sensor based on surface acoustic waves, which comprises a T-shaped force bearing, three surface acoustic wave resonators, a housing and an antenna;

[0045] The shell is elliptical, and both ends are provided with through holes for threading ropes;

[0046] The antenna is arranged on the outer surface of the casing,

[0047] The T-shaped force-bearing seat is fixedly arranged in the housing, and is composed of two force arms and a base. The ends of the two force arms far from the base are each provided with an inverted triangle, and the bottom of the seat is trapezoidal. The body and the upper end are provided with grooves for fixing ropes;

[0048] The lower part of the inverted triangle is provided with a through hole for fixing the rope;

[0049] Two of the three surface acoustic wa...

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Abstract

The invention discloses a wireless passive rope tension sensor based on surface acoustic waves. The wireless passive rope tension sensor comprises a T-shaped stress seat, three surface acoustic wave resonators, a shell and an antenna, wherein the shell is oval in shape, and two ends of the shell are provided with through holes through which a rope can penetrate; the antenna is arranged on the outer surface of the shell; the T-shaped stress seat is fixedly arranged in the shell and composed of two arms and a pedestal; one end, away from the pedestal, of each arm is provided with an inverted triangular body; the pedestal is a trapezoid body of which the upper end is provided with a groove for fixing the rope; the lower part of the inverted triangular body is provided with a through hole for fixing the rope; two of the three surface acoustic wave resonators are symmetrically arranged on the two arms, and the other one is arranged on the pedestal. The sensor makes change of the tension to be sensitive through the surface acoustic waves, working capacity of the sensor is from a receiving and transmitting antenna, sensitive force is represented by change of resonant frequency of the surface acoustic waves and transmitted in a wireless manner, and thereby wireless passive tension detection is achieved.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a wireless passive rope tension sensor based on surface acoustic waves. Background technique [0002] Surface acoustic wave is a kind of elastic wave that propagates along the surface existing on the surface of solid half space, and its energy is concentrated near the surface. Surface acoustic wave technology was first discovered by British physicist Rayleigh (Rayleigh) in the process of studying seismic waves in the 1880s, a kind of sound wave whose energy is concentrated on the ground surface. This technology is a new field of science and technology developed in the late 1960s, and it is a fringe subject combining acoustics and electronics. The development of SAW technology in my country began in 1970, only 3 years later than in the West. Since the practical application of surface acoustic wave devices in the late 1970s, they have now spread across military and civilian field...

Claims

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Application Information

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IPC IPC(8): G01L5/04G08C17/02
Inventor 程远璐张若昀赵敏姚敏邬琳琳
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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