Positioning method for induction interval critical point of Hall element
A Hall element and positioning method technology, which is applied to instruments, measuring devices, measuring electricity and other directions, can solve the problems of difficulty in accurately finding the absolute fixed point position of the Hall element trigger switch response, large positioning error, etc., and achieves easy implementation, The effect of small error and improved operation accuracy
Active Publication Date: 2021-03-09
GUANGZHOU YAJIANG PHOTOELECTRIC EQUIP CO LTD
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However, the positioning error of the existing technology is relatively large, and it is difficult to accurately find the absolute fixed point position of the trigger switch response of the Hall element, so it cannot meet higher requirements for use.
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[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0022] It should be understood that the terms "first" and "second" are only used for descriptive purposes to distinguish technical features of the same type, and cannot be interpreted as indicating or implying the relative importance, order and quantity of these technical features, that is, , the "first" technical feature may be referred to as the "second" technical feature, and the "second" technical feature may also be referred to as the "first" ...
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The invention relates to the technical field of Hall induction and discloses a Hall element induction interval critical point positioning method. The method comprises steps of repeatedly moving a Hallelement to enter and leave a magnetic field area of a magnetic element, and meanwhile, according to the change of a trigger state of the Hall element, positioning the Hall element. The method can approach the induction interval critical point of the Hall element step by step and finally perform accurate positioning, and has advantages of small error, high precision and easy implementation. As theHall element can trigger the switch response at the position of the critical point of the induction interval of the Hall element each time, the position of the critical point of the induction interval of the Hall element is used as the initial position of the Hall element, the operation precision of the equipment can be effectively improved, namely, the positioning method provided by the invention can meet higher use requirements.
Description
technical field [0001] The invention relates to the technical field of Hall sensing, in particular to a method for locating a critical point of a sensing interval of a Hall element. Background technique [0002] Since the N pole and S pole of the magnetic element are distributed in space, and the induction range of the Hall element is affected by the distribution area and strength of the magnetic field, and the Hall element is also affected by the temperature and its own magnetic induction sensitivity, so the Hall element When the component is close to the magnetic field area, the position that triggers the switch response is an area, not a definite point. However, in practical applications, it is often required that the Hall element can trigger the switch response at an absolute fixed point position every time. Taking this fixed point position as the initial position of the Hall element can improve the operation accuracy of the equipment. However, the positioning error of ...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 黄荣丰陈志曼陈运筹
Owner GUANGZHOU YAJIANG PHOTOELECTRIC EQUIP CO LTD