Hall type angle displacement measurement device

Abstract

The invention discloses a Hall type angle displacement measurement device. The Hall type angle displacement measurement device comprises a Hall type angle stroke sensor, a main circuit and an accessory circuit, wherein the Hall type angle stroke sensor is connected with a valve rod or other moving objects and is used for converting angle displacement amount into an electric signal and transmitting the electric signal to the main circuit, signal sampling and processing of related data are completed in the main circuit, and a collected angle displacement signal is fed back and output to an upper computer through a feedback and output circuit in the accessory circuit. The Hall type angle displacement measurement device overcomes the shortcomings that a rotary type sensor in a traditional angle displacement measurement device is large in mechanical abrasion, lagging, prone to being affected by external vibration, short in service life and the like, and also overcomes the shortcomings that an existing Hall type angle displacement sensor is large in power dissipation, complex in computing and low in accuracy due to the non-linear measurement principle, and the like. The Hall type angle displacement measurement device can achieve high-accuracy and stable feedback and output of displacement data.

Description

technical field [0001] The invention relates to the fields of electronic technology, sensor technology, detection and control technology, and more specifically, to a Hall-type angular displacement measuring device. Background technique [0002] The measurement of the rotation angle of an object, that is, the angular stroke, is one of the important contents in the field of detection and control technology. Angular travel measuring devices are widely used in industrial production, especially in the field of process control engineering. The working principle of the angular stroke measuring device is mainly: when the object rotates at a certain angle, the sensitive element in the angular displacement sensor will generate a corresponding electrical signal output, and the real-time sampling and data processing of the signal can obtain the current rotation speed of the object. Angle; the processed angular stroke data can be transmitted to the host computer through the feedback cir...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a Hall-type angular displacement linear measuring device, which can not only overcome the large mechanical wear, serious mechanical hysteresis, easy to be affected by external vibration, low measurement accuracy, and low structural life of the existing contact displacement sensors. Shortcomings, and can overcome the shortcomings of the current Hall angular displacement sensor, such as excessive power consumption in angular displacement measurement, discontinuous measurement, or due to the use of nonlinear measurement principles, resulting in complex calculation methods, long calculation time, and low calculation accuracy; at the same time , it can also carry out straight stroke measurement through stroke transformation, and solve the problem of insufficient sensor stroke in the measurement process of the straight stroke Hall sensor

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