Abstract
With good stability and high reliability, vibration wire strain sensors were extensive applied in many momentous projects. In the paper, the basic principle and working characteristics of vibration wire strain sensors were introduced. Also, those error reasons from the aspect of working principle, the aspect of structural bending deformation and the aspect of temperature field were analyzed. In the end, amendment technology was given out, providing valuable reference of improving structural strain accuracy.
Highlights
Vibration wire strain sensor is a kind of non-electric quantity measuring sensor, which is extensively applied in the world
Vibration wire strain sensor is mainly composed of diaphragm, vibration wire, clamp holder, vibrator and vibration pickup
Because the theory of vibration wire strain sensor is based on string theory, it is accurate when only under axial tension or stress
Summary
Vibration wire strain sensor is a kind of non-electric quantity measuring sensor, which is extensively applied in the world. It has advantages of structured, good durability, strong anti-interference ability, reliable and stable measured values, high accuracy and easy operation. Its usage may realize automatic tests with high accuracy. Vibration wire strain sensors are widely used in the environment of poor working conditions and high monitoring technical requirements such as civil engineering, harbor engineering, mechanical ship, reservoir, dam, etc. The working principle of vibration wire strain sensor is analyzed. Error analysis and amendment formulas through aspects of working principle structural bending deformation and temperature fields are discussed. Experiments were carried out to prove the correction of theoretical analysis
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