A magnetic induction level gauge

Abstract

The embodiment of the present invention discloses a magnetic induction material level gauge, which is installed on the side wall of the material bin. The magnetic induction material level gauge includes: a magnetic displacement assembly, which is used to move the material to the side wall of the material bin according to the height of the material in the material bin. Generate mechanical displacement; magnetic sensing component, magnetic sensing component includes a protective shell, a magnetoresistive chip and a processing module inside the protective shell, the protective shell is fixed on the side wall of the material bin, and the magnetoresistive chip is located on the side of the processing module On the side facing the magnetic displacement component, the magnetic sensing component is used to sense the magnetic field signal of the magnetic displacement component and determine the height of the material in the material bin according to the magnetic field signal. In the embodiment of the present invention, the magnetic displacement component generates mechanical displacement according to the height of the material, and the magnetoresistive structure senses the change of the magnetic field of the magnetic displacement component to determine the height of the material. Compared with the prior art, the magnetic induction level gauge has the advantages of low power consumption, high sensitivity, simple structure and low cost, and is suitable for detecting solid and liquid materials.

Description

technical field [0001] The embodiment of the present invention relates to storage detection technology, in particular to a magnetic induction level gauge for detecting the height of materials in a material bin. Background technique [0002] The level gauge is used to detect the material level. Existing material level gauges include rotary resistance type, diaphragm type, tuning fork type, vibrating rod type and radio frequency admittance type. The anti-rotation level gauge uses the motor to drive the blade. When the blade touches the material, the motor stops rotating and outputs the signal; the diaphragm type level gauge transmits its own deformation signal to the micro switch through the lever mechanism to trigger the action; the tuning fork type level gauge Based on the change of the vibration frequency when the tuning fork is immersed, and then output the signal; the vibrating rod level gauge uses the material coverage to increase the vibration damping to trigger the si...

AI Technical Summary

Problems solved by technology

[0003] However, the resistance-rotary level gauge has low cost, the diaphragm type level gauge has low sensitivity, the tuning fork type level gauge has high power consumption, the vibrating rod type level gauge has high power consumption, low sensitivity and high cost, and the radio frequency admittance type level gauge has high power consumption. Bit meter power consumption is high

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