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Rectangular Hall sensor array structure designing method for big direct current measurement

A technology of Hall sensor and design method, which is applied in the direction of instrumentation, calculation, electrical digital data processing, etc. It can solve the problems of discontinuous tangential component, large change of tangential component, and adding Hall sensors, so as to improve accuracy Level, improve anti-interference ability, reduce the effect of manufacturing cost

Active Publication Date: 2017-12-19
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

However, the problem faced by using a rectangular arrangement is that the tangential components of the magnetic field to be measured along the four sides of the closed integration loop vary greatly, and at the four corners of the rectangle, the tangential components are not continuous. The algorithm of summing the output signals of all Hall sensors is accumulated, so if the required accuracy level is to be achieved, the number of Hall sensors must be increased

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  • Rectangular Hall sensor array structure designing method for big direct current measurement
  • Rectangular Hall sensor array structure designing method for big direct current measurement
  • Rectangular Hall sensor array structure designing method for big direct current measurement

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Embodiment Construction

[0031] Such as Figure 5 As shown, the design method of rectangular Hall sensor array structure for DC large current measurement includes the following steps:

[0032] (1) According to the voltage level of the busbar to be tested, the necessary insulation interval is obtained, referring to the installation space required by the structural skeleton, the smallest initial rectangular arrangement size is selected, and multiple Hall sensors are arranged according to the initial rectangular arrangement size as A rectangular integral loop, thereby generating a closed ampere loop integral path around the busbar to be tested;

[0033] (2), the Hall sensor output signals on the four sides of the rectangular integral loop are processed respectively to obtain the integral value of the magnetic field to be measured along the four sides of the rectangular loop, and finally accumulate to obtain the integral value of the magnetic field to be measured along the closed integral loop, Then dete...

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Abstract

The invention discloses a rectangular Hall sensor array structure designing method for big direct current measurement. A round array structure is abandoned, and a Hall sensor array arranged in a rectangular mode is used; a high-order Simpson integration algorithm is adopted, the number of required Hall chips is decreased while the required measurement accuracy is reached, and the sensor manufacturing cost is reduced. By adopting the method, the accuracy and antijamming capability of Hall sensors are improved while the advantages of simple structure, low cost and the like of the Hall sensors are kept.

Description

technical field [0001] The invention relates to the field of design methods of Hall sensor arrays, in particular to a method for designing a rectangular Hall sensor array structure for DC large current measurement. Background technique [0002] The Hall sensor array belongs to a new type of open-loop non-contact direct measurement linear current sensor. The measurement principle is to use the Ampere loop law to place the Hall chip on the closed integral path surrounding the current busbar to be measured, and to measure the tangential component of the magnetic field along the integral curve at each discrete point, and use different algorithms to obtain the current The integral value of the generated magnetic field along the integral curve is obtained to obtain the current value to be measured. [0003] So far, the Hall sensor array has shown its superiority in the field of measuring DC large current. Compared with traditional current transformers, the Hall sensor array does...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/398
Inventor 傅鹏国旗王林森蒋力武旭李亚左英
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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