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Setting method of Hall linear stroke indicator

A technology of indicators and strokes, applied in the field of magnetic sensors, can solve the problems of lack of linearity in measuring displacement output, and achieve the effects of light weight, convenient installation, and low power consumption

Active Publication Date: 2016-06-08
NANJING ZHONGXU ELECTRONICS SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this type of sensor is isolated measurement, but it can only measure the relative positional relationship, and does not have the function of measuring displacement output linearity

Method used

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  • Setting method of Hall linear stroke indicator
  • Setting method of Hall linear stroke indicator
  • Setting method of Hall linear stroke indicator

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Experimental program
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Embodiment Construction

[0016] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0017] figure 1 It is a functional block diagram of a Hall linear travel indicator according to an embodiment of the present invention. The Hall linear travel indicator includes a Hall element and a conditioning circuit connected thereto. Such as figure 1 As shown, the conditioning circuit includes a temperature compensation constant current source circuit, a Hall element, a magnetic field, a signal adjustment amplifier circuit, and an output adjustment protection circuit. The Hall element converts the magnetic signal into an electrical signal, which is adjusted and amplified by the operational amplifier and then output.

[0018] Such as figure 2 In the circuit diagram shown, the operating voltage of the Hall linear travel indicator is +5V, and the compensated constant current source circuit i...

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Abstract

The invention provides a setting method of a Hall linear stroke indicator. The Hall linear stroke indicator comprises a Hall element and a conditioning circuit connected with the Hall element; the conditioning circuit comprises a temperature compensation constant current source circuit which is input into a magnetoelectricity conversion circuit, namely the Hall element, the Hall element output is output via a signal adjustment and amplification circuit; the Hall element converts a magnetic signal into an electric signal, and the electric signal is output after being adjusted and amplified by virtue of an operational amplifier; and magnetic steel is arranged and enters a working region of the Hall linear stroke indicator, and the Hall element senses a magnetic field and outputs a voltage signal. When the magnetic steel displaces along the axis of the Hall linear stroke indicator, voltage output by the Hall element is in linear variation along with a gradually strengthened magnetic field strength sensed by the Hall element, and the stroke of the magnetic steel can be judged through conversion.

Description

technical field [0001] The invention relates to the field of magnetic sensitive sensors, in particular to a design method capable of isolated measurement, wide temperature range and good linearity for high-precision measurement. Especially the design method of the Hall linear indicator that judges the stroke by the linear change of the output voltage Background technique [0002] Hall linear travel indicator is a kind of magnetic sensitive sensor, based on the principle of Hall effect, it can detect the magnetic field and its changes, and can be used in various occasions related to the magnetic field. [0003] Hall linear travel indicator has many advantages, it has firm structure, small size, light weight, wide operating temperature range, good linearity, long life, easy installation, low power consumption, vibration resistance, and is not afraid of dust, oil, etc. or corrosion. Through the Hall linear travel indicator, non-electric and non-magnetic physical quantities su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/02
CPCG01B7/02
Inventor 刘泽金黄森徐守祥夏晓明张斌斌王谦杨超
Owner NANJING ZHONGXU ELECTRONICS SCI & TECH
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