Torque measuring device and method based on optical fiber FP sensing
A technology of torque measurement and optical fiber sensor, applied in measurement devices, torque measurement, power measurement and other directions, can solve the problems of torque measurement interference, low torque measurement accuracy, etc., to suppress strong electromagnetic interference, simple structure and good versatility Effect
Active Publication Date: 2021-09-03
WUHAN UNIV OF TECH
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[0004] The present invention provides a torque measurement device and method based on optical fiber FP sensing, which aims to solve the problem of torque measurement caused by environmental electromagnetic interference in the prior art Interference, resulting in technical problems of low torque measurement accuracy
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[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0039] The following description is given to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for purposes of explanation. It should be understood that one of ordinary skill in the art would recognize that the present invention may be practiced without the use of these specific details. In other instances, well-known structures and procedures are not described in detail to avoid obscuring the descript...
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The invention discloses a torque measuring device and method based on optical fiber FP sensing. The torque measuring device based on optical fiber FP sensing comprises an optical fiber sensor, a demodulator and a calculation module. The optical fiber sensor comprises an optical fiber sensing probe, a reflecting mirror, a first supporting arm and a second supporting arm; the first supporting arm and the second supporting arm are fixedly connected to a transmission shaft; a through hole is formed in the first supporting arm, and the optical fiber sensing probe penetrates through the first supporting arm via the through hole; the reflecting mirror is attached to the second supporting arm, the reflecting mirror is right opposite to the optical fiber sensing probe, and the optical fiber sensing probe and the reflecting mirror form an F-P cavity; the demodulator is used for acquiring the cavity length of the F-P cavity in real time; and the calculation module is used for calculating the torque of the transmission shaft according to the cavity length of the F-P cavity. According to the invention, the accuracy of torque measurement can be guaranteed, and the applicability and sensitivity of the torque measuring device based on optical fiber FP sensing are improved.
Description
technical field [0001] The invention relates to the technical field of torque measurement, in particular to a torque measurement device and method based on optical fiber FP sensing. Background technique [0002] Most modern ships are propelled by propellers, and the main propulsion device transmits torque to the propellers through the shafting. Shafting torque is not only an important index for the evaluation of propulsion system power, economy and energy efficiency, but also an important parameter for monitoring the operating status of the main power plant. If the torque value of the transmission shaft to be tested can be accurately and conveniently measured, it will be of great significance for real-time monitoring of the operating state of the system and analysis of the performance of the system. [0003] In the prior art, the method of measuring the torque of the shafting is mainly the strain bridge measurement technology. By providing the working power to the strain br...
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IPC IPC(8): G01L3/00
CPCG01L3/00
Inventor 周次明余鑫宇范典王晶陈希
Owner WUHAN UNIV OF TECH