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Clamp type current measurement device based on Hall element

A current measuring device, Hall element technology, applied in the improvement of basic electrical components, measuring devices, measuring electrical variables and other directions, can solve the problems of non-compliance with safety standards, unsafe, time-consuming and labor-intensive, etc. The effect of easy correction and fixed air gap size

Pending Publication Date: 2018-07-10
QINGYUAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In engineering field applications, if the current measurement device needs to be cut off before the current measurement device can be connected for measurement, it is time-consuming, laborious and unsafe, especially when measuring the current of a power device in normal operation, it does not meet the relevant safety standards

Method used

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  • Clamp type current measurement device based on Hall element
  • Clamp type current measurement device based on Hall element
  • Clamp type current measurement device based on Hall element

Examples

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Embodiment Construction

[0155] The accompanying drawings are for illustrative purposes only and cannot be construed as limiting the patent;

[0156] In order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product;

[0157] For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.

[0158] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0159] like figure 1 As shown, a clamp-type current measurer based on a Hall element, including a Hall clamp head, a sampling resistor and a control module, wherein,

[0160] The Hall clamp measures the current through the Hall element HW302B to obtain the sampling current;

[0161] The sampling resistor converts the sampling current into a sampling voltage;

[0162] The control module perf...

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PUM

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Abstract

The invention discloses a clamp type current measurement device based on a Hall element. The clamp type current measurement device comprises a Hall clamp head, a sampling resistor and a control module, wherein the Hall clamp head is used for measuring current through the Hall element to obtain sampling current; the sampling resistor is used for converting the sampling current into sampling voltage; the control module is used for carrying out signal processing on the sampling voltage to obtain a numerical value of measured current, wherein a connection relation is as follows: a detected lead wire penetrates through the Hall clamp head; an output end of the Hall clamp head is electrically connected with one end of the sampling resistor; the other end of the sampling resistor is electricallyconnected with an input end of the control module. The clamp type current measurement device disclosed by the invention has the beneficial effects that 1, an improved tooth-shaped engaged jaw shape isadopted and the problem that a gap size of an opening of a jaw is unstable so that the magnetic resistance of a whole magnetic path is not stable and the precision correction is influenced can be avoided; 2, a Hall chip is arranged between two quadrant magnetic cores, the gap size is fixed and precision errors are stable and are easy to revise.

Description

technical field [0001] The invention relates to the field of current measurement, in particular to a clamp-type current measurer based on a Hall element. Background technique [0002] There are many methods of measuring current, such as shunts, transformers, Hall effect sensors, magnetically amplified current comparators, and magnetically modulated current comparators. When performing current measurement in the field of electrotechnical technology, it is often necessary to realize current measurement accurately, quickly and conveniently. In engineering field application, if the circuit needs to be cut off before the current measurement device can be connected for measurement, it is time-consuming, laborious and unsafe, especially when measuring the current of a power device in normal operation, it does not meet the relevant safety standards. At this time, it is much more convenient to use a clamp-type current measuring device, which can measure the current without cutting o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/22G01R15/20G01R15/18G01R19/25
CPCG01R1/22G01R15/00G01R15/18G01R15/202G01R19/00G01R19/25G01R19/2509
Inventor 赖俊驹胡金磊
Owner QINGYUAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD