Demodulator and demodulation method of reflection type coaxial cable Fabry-Perot sensor
A coaxial cable and sensor technology, applied in the field of strain monitoring, can solve the problems of low measurement accuracy, inability to use, and complex demodulation methods, and achieve the effects of high accuracy, small error, and strong environmental adaptability
Active Publication Date: 2020-02-21
WATTS GALLOP SUZHOU SAFETY MONITORING INSTR
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However, the vector network analyzer is a general-purpose electromagnetic wave energy test equipment, which cannot be used in actual engineering, and has strong limitations on the use environment, and the demodulation method is relatively complicated, and the measurement accuracy is low, which is difficult to meet the modern high-precision requirements. Require
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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] Such as figure 1 As shown, embodiments of the present invention include:
[0022] A demodulator of reflective coaxial cable Faber sensor, comprising VCO circuit, power splitter, first coupler, second coupler, wave detector, first port, second port and sensor, described VCO The circuit is connected with the power divider, and the power divider is respectively connected with the first coupler and the second coupler, and the first coupler and the second coupler are connected with the first port and the second po...
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The invention discloses a demodulator of a reflection type coaxial cable Fabry-Perot sensor. The demodulator comprises a VCO circuit, a power divider, a first coupler, a second coupler, a detector, afirst port, a second port and a sensor. The VCO circuit is connected with the power divider, the power divider is connected with the first coupler and the second coupler, the first coupler and the second coupler are connected with the sensor through a first port and a second port, and the first coupler and the second coupler are connected with the detector. By means of the mode, the demodulator and the demodulation method of the reflection type coaxial cable Fabry-Perot sensor dynamically monitor the state of the sensor in real time, obtain dynamic frequency deviation through cyclic scanning,calculate deformation quantity according to the frequency deviation, and are high in precision, small in error and high in environment adaptability.
Description
technical field [0001] The invention relates to the technical field of strain monitoring, in particular to a demodulator and demodulation method for a reflective coaxial cable Faber sensor. Background technique [0002] The coaxial cable strain sensor is a sensor that can be used in strain monitoring scenarios, such as pipeline deformation monitoring, bridge deformation monitoring, rail deformation monitoring and other large-scale deformation monitoring. The demodulator is used to demodulate the coaxial cable strain sensor, so it can be applied in multiple strain monitoring fields. [0003] At present, there is no regulator and other equipment specially used for demodulating the coaxial cable strain sensor in the market. In the prior art, a vector network analyzer is required to demodulate the coaxial cable strain sensor. A vector network analyzer is an indispensable measurement ruler for product function and performance testing, especially in production testing. However, ...
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IPC IPC(8): G01B15/06
CPCG01B15/06
Inventor 王念勇魏明辉白铁瑛
Owner WATTS GALLOP SUZHOU SAFETY MONITORING INSTR