Vibrating string type displacement sensor and working method thereof
A displacement sensor, vibrating wire technology, applied in the field of displacement sensors, can solve the problems of incompatibility, easy distortion and attenuation of voltage or current signals, low resolution, etc., to achieve simple structure, good long-term stability and high resolution. Effect
Inactive Publication Date: 2013-04-03
泰安科大洛赛尔传感技术有限公司
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Problems solved by technology
Voltage or current signals are easily distorted and attenuated during signal transmission, so they are not suitable for long-distance transmission, and the resolution is low, so they are not suitable for harsh environments such as dams, bridges, tunnels, and mines
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Embodiment Construction
[0018] The construction of the embodiment of the present invention will be further described below with reference to the accompanying drawings.
[0019] The structure of a vibrating wire displacement sensor is: it includes a cylindrical housing 8, steel strings 10 are arranged in the cylindrical housing 8, and the steel strings 10 are tightened at both ends of the inner cavity of the cylindrical housing 8; A clamping device is also provided in the housing 8, and the clamping device is clamped on the steel string 10; the clamping device is to set a hollow sliding block 3 in the cylindrical housing 8, and the sliding block 3 A through hole perpendicular to the steel string 10 is provided, and two upper and lower clamping blocks 5 are installed in the through hole. Clamp block 5 clamps. The sliding block 8 is provided with a push-pull frame 2,
[0020] A displacement rod 1 is arranged outside one end of the cylindrical housing 8, and the displacement rod 1 is connected with the...
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The invention discloses a vibrating string type displacement sensor and a working method thereof. The vibrating string type displacement sensor is characterized in that a steel string and a clamping device are arranged in a cylindrical case, and the steel string is tensioned at the two ends of the case; the clamping device is clamped on the steel string; a displacement rod connected with the clamping device is arranged outside the cylindrical case; and the cylindrical case is internally provided with two magnetic head coils, and conducting wires of the two magnetic head coils are led out fromthe cylindrical case and then are connected with signal cables. In the invention, by using a mature vibrating string force cell principle, the displacement sensor is designed, has a simple structure,high sensitivity and high resolution and is convenient to manufacture, and the working effective frequency difference can reach up to 1000-1200Hz. The vibrating string type displacement sensor is of a purely mechanical structure and has good long-term stability; and a signal is a frequency signal, thus the signal can be transmitted remotely without attenuation.
Description
technical field [0001] The invention relates to a displacement sensor, in particular to a vibrating wire displacement sensor. Background technique: [0002] In the observation and long-term monitoring of geotechnical engineering and other engineering, displacement sensors are inseparable. Most of the existing displacement sensors contain electronic components, which output voltage or current signals. Voltage or current signals are easily distorted and attenuated during signal transmission, so they are not suitable for long-distance transmission, and the resolution is low, so they are not suitable for harsh environments such as dams, bridges, tunnels, and mines. Contents of the invention [0003] The present invention proposes a displacement sensor that uses frequency signal transmission. This displacement sensor achieves the purpose of long-distance transmission without distortion, no attenuation, long-term stability, and high resolution by changing the frequency of the v...
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IPC IPC(8): G01B7/02
Inventor 胡建明栾兆群王彩云戚长青王红霞
Owner 泰安科大洛赛尔传感技术有限公司