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Magnetic sensor, magnetic sensor integrated circuit, motor assembly and application equipment

A magnetic sensor, magnetic sensing technology, applied in the direction of electric components, electrical components, instruments, etc., can solve the problems affecting the accuracy of the output signal of the Hall plate, to eliminate the stored charge, increase the accuracy, and quickly discharge. Effect

Active Publication Date: 2017-10-24
JOHNSON ELECTRIC SHENZHEN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a magnetic sensor to overcome the problem in the prior art that the accuracy of the output signal of the Hall plate is affected by the charge stored by the parasitic capacitance of the Hall plate during operation

Method used

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  • Magnetic sensor, magnetic sensor integrated circuit, motor assembly and application equipment
  • Magnetic sensor, magnetic sensor integrated circuit, motor assembly and application equipment
  • Magnetic sensor, magnetic sensor integrated circuit, motor assembly and application equipment

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] figure 1 For the structural schematic diagram of the magnetic sensor disclosed in the embodiment of the present invention, see figure 1 As shown, the magnetic sensor may include:

[0038] The magnetic sensing element 10, namely figure 1 In the circuit structure surrounded by a dotted line box, the magnetic sensing element 10 includes four contact terminals, wherein the first terminal A and the third terminal C are oppositely arranged; the second termi...

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Abstract

The present invention discloses a magnetic sensor. A discharge circuit is arranged between two pairs of respectively opposite terminals of the magnetic sensing elements of the magnetic sensor. The discharge circuit is provided with two switches respectively controlled by two overlapping control signals. The two switches of the discharge circuit can be switched on at the same time when the above two overlapping control signals are both high in electrical level during the overlapping process of the two overlapping control signals. Therefore, the circuit between the two opposite terminals of the magnetic sensing elements is short-circuited, and the quick discharge purpose is realized. The charge stored by the parasitic capacitance is eliminated, and the output signal accuracy of the magnetic sensing elements is improved. The invention also discloses a magnetic sensor integrated circuit comprising the above magnetic sensor, a motor assembly and application equipment.

Description

technical field [0001] The present invention relates to the technical field of circuit control, and more specifically, relates to a magnetic sensor, a magnetic sensor integrated circuit, a motor component and application equipment using the magnetic sensor integrated circuit. Background technique [0002] The working principle of the magnetic sensor is the Hall effect. The Hall effect refers to the current I passing through a substance and applying a magnetic field B in a direction at a positive angle to the current. The phenomenon of potential difference V. In practical applications, magnetic sensors are often used to detect the polarity of the magnetic field in the environment. [0003] The Hall plate in the prior art includes four connection terminals. When the first and third terminals opposite to each other are used as power input terminals, and the other two opposite second and fourth terminals are signal output terminals, due to the There is a voltage difference bet...

Claims

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Application Information

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IPC IPC(8): H02K11/215G01R33/07
CPCG01R33/07
Inventor 蔡光杰王俊辉
Owner JOHNSON ELECTRIC SHENZHEN
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