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Coaxial cable sensor and production method and use method thereof

A coaxial cable and sensor technology, applied in the field of stress sensors, can solve the problems of poor ability of catastrophic accidents, small dynamic range, and unsatisfactory monitoring, etc., and achieve the effects of good applicability, strong anti-interference ability, and good shielding performance

Active Publication Date: 2014-01-08
WATTS GALLOP SUZHOU SAFETY MONITORING INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many types of strain sensors used to test deformation, but they are basically local sensors, such as resistance strain gauges, vibrating wire sensing elements, optical fiber sensors, etc. These local sensors are limited by their dynamic range before the structure of the measured object fails. Too small or the ability to resist disasters and catastrophic accidents is too poor to meet the whole process monitoring of structural damage under extreme loads and disasters. Therefore, engineering large strain sensors are urgently needed for monitoring the safety of major engineering structures

Method used

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  • Coaxial cable sensor and production method and use method thereof
  • Coaxial cable sensor and production method and use method thereof

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Embodiment 1

[0036] see figure 1 , the embodiment of the present invention includes:

[0037] A coaxial cable sensor includes a sensing unit and a modem 1 . The sensing unit includes a coaxial cable 2 , a metal needle and a packaging sleeve 26 . The coaxial cable 2 includes an inner conductor 21 , an outer conductor shielding layer 23 and an insulating plastic protective sleeve 24 . The outer conductor shielding layer 23 is located between the inner conductor 21 and the insulating plastic protective sleeve 24, the middle section of the insulating plastic protective sleeve 24 is provided with two openings, and the packaging sleeve 26 is sleeved on On the middle section of the insulating plastic protection sleeve 24, the metal needle is connected to the inner conductor 21 and the outer conductor shielding layer 23, and a part extends out of the opening to the packaging sleeve 26, so The opening and the metal needle together constitute the reflection point 25 of the coaxial cable 2, and th...

Embodiment 2

[0061] see figure 2 , the coaxial cable sensor described in Embodiment 2 of the present invention is different from the coaxial cable sensor described in Embodiment 1 in that: (1) the coaxial cable sensor does not include a characteristic matching load 3, and the coaxial cable sensor Both ends of the cable 2 are connected to the modem 1, and the coaxial cable 2 forms a loop, (2) different from the reflection mode in the embodiment 1, the work of the coaxial cable sensor in the embodiment 2 The mode used is transmission mode.

[0062] Another example figure 2 As shown, both ends of the coaxial cable 2 are connected to the modem 1, the coaxial cable 2 forms a loop, and the middle section of the coaxial cable 2 includes two reflection points 25. Similarly, the coaxial cable The axial cable 2, the reflection point 25 and the packaging sleeve 26 together constitute the sensing unit of the coaxial cable sensor.

[0063] The manufacturing method of the coaxial cable sensor descr...

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Abstract

The invention discloses a coaxial cable sensor, which comprises a sensor unit and a modulation and demodulation instrument, wherein the sensor unit comprises a coaxial cable, a metal needle and a packaging bushing. The coaxial cable comprises an inner conductor, an outer conductor shield layer and a plastic insulation protective bushing, wherein the outer conductor shield layer is positioned between the inner conductor and the plastic insulation protective bushing. The middle section of the plastic insulation protective bushing is provided with at least two openings, and the packaging bushing is sleeved on the middle section of the plastic insulation protective bushing; and the metal needle is connected with the inner conductor and the outer conductor shield layer. At least one end of the coaxial cable is connected with the modulation and demodulation instrument. Through the mode, the coaxial cable sensor provided by the invention has the advantages of strong antijamming ability, good shielding performance, stable data transmission, high sensitivity, strong resolution, good applicability and good stability, and fills a gap of realizing a Fabry-Perot cavity sensor by using the coaxial cable.

Description

technical field [0001] The invention relates to the field of stress sensors for testing deformation, in particular to a coaxial cable sensor and its manufacturing method and usage method. Background technique [0002] At present, there are many types of strain sensors used to test deformation, but they are basically local sensors, such as resistance strain gauges, vibrating wire sensing elements, optical fiber sensors, etc. These local sensors are limited by their dynamic range before the structure of the measured object fails. Too small or the ability to resist disasters and catastrophic accidents is too poor to meet the whole-process monitoring of structural damage under extreme loads and disasters. Therefore, engineering large-strain sensors are urgently needed to monitor the safety of major engineering structures. Contents of the invention [0003] The technical problem mainly solved by the present invention is to provide a coaxial cable sensor with strong anti-interfe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/16
Inventor 皮晓雨俞望兴
Owner WATTS GALLOP SUZHOU SAFETY MONITORING INSTR
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