A Compensated Vibrating Wire Sensor

Abstract

The invention discloses a compensation type vibrating wire sensor. The compensation type vibrating wire sensor comprises a bracket, a shell, a vibrating wire, magnetic bodies and a circuit board, wherein two ends of the vibrating wire are connected with the bracket through a clamping device; the magnetic bodies are correspondingly arranged on two sides of the vibrating wire; the bracket comprises a bracket body with a cavity, a first pressure body and a second pressure body; the first pressure body and the second pressure body are arranged on the outer side of bracket body, and a first tension arm and a second tension arm are arranged in the cavity of the bracket body; two ends of the vibrating wire are respectively connected with the circuit board through a first elastic component and a second elastic component; the clamping device comprises two wire clamping components and two clamping grooves; the wire clamping components are arranged in the clamping grooves, and the vibrating wire is clamped between the two wire clamping components. According to the compensation type vibrating wire sensor, the bracket is of an integrated hollow structure, the clamping device is arranged in the bracket and is used for fixing the vibration wire; elastic components are arranged at two ends of the vibration wire, so that the vibration at the bottom can be eliminated, the downward transfer of the vibration is avoided, and two paths of vibration signals are generated. The compensation type vibrating wire sensor is small in zero drift and temperature drift and stable and reliable in performance.

Description

technical field [0001] The invention relates to the technical field of vibrating wire sensors, in particular to a compensation type vibrating wire sensor. Background technique [0002] The vibrating wire sensor is a non-electrical measurement sensor that is widely valued and widely used at home and abroad. The patent application number is: CN2010205608218 patent provides a weighing sensor, the sensor base is integrally formed with the upper and lower pressure blocks, and then two arc-shaped strain grooves are opened along the length direction of the sensor base, and the upper and lower pressure blocks are located on the two sides. Only between the strain grooves, the overall structure is compact and gathered. The tension arms are protruding on both sides of the sensor, and the vibrating string is directly fixed on the tension arm. Weaken vibration energy, cause detection error, and affect detection accuracy. Although it is connected to the input terminal of the amplifier a...

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Problems solved by technology

[0003] In addition, during the working process of the vibrating string sensor, the vibrating string vibrates, and the vibrating string and the feedback circuit are connected by a wire, and the vibration energy of the vibrating string will be transmitted to the wire, causing energy attenuation and also affecting the detection pressure. reduce the accuracy of the measurement

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