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Current measurement device and method, and manufacture method of current measurement device

The technology of a current measuring device and manufacturing method, which is applied in the field of electronic information, achieves the effect of broad application prospect and low cost

Inactive Publication Date: 2016-06-15
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing current clamp products that can measure current without power off are based on the principle of electromagnetic induction and are limited to the measurement of power frequency AC current

Method used

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  • Current measurement device and method, and manufacture method of current measurement device
  • Current measurement device and method, and manufacture method of current measurement device
  • Current measurement device and method, and manufacture method of current measurement device

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Embodiment Construction

[0043] The specific embodiments of the present invention will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

[0044] The value of the current I to be measured in the embodiment of the present invention is calculated according to the Ampere’s Loop Theorem. The Ampere’s Loop Theorem is specifically: the value of the integral of the magnetic induction B in space along any closed path (ie the circulating current value of B) is equal to The permeability μ multiplied by the algebraic sum of the currents enclosed by the closed path, namely If the current flow is in a right-handed spiral relationship with the integral loop, the current takes a positive value, otherwise it takes a negative value.

[0045] Because the integrated magnetoelectric sensor is getting smaller and smaller, so that people can measure the spatial distribut...

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Abstract

The present invention provides a current measurement device and method, and a manufacture method of a current measurement device. The device comprises: an elastic clamp, wherein the elastic clamp includes an elastic clamp body with a prefabricated circular binding clip and a clamp-type closed circular ring being inlaid on the circular binding clip of the elastic clamp body and being composed of a plurality of Hall elements; a signal processing additive circuit configured to obtain the Hall voltage of each Hall element when the elastic clamp is clamped the wires flowing through the current to be measured, obtain the current value to be measured based on the Ampere circuital theorem according to the Hall voltage of the Hall element and output the current to be measured to a display interface circuit; and the display interface circuit configured to obtain the current value to be measured outputted by the signal processing additive circuit and output the current value to be measured to the display device. The current measurement device is able to perform safe, simple, low-cost and efficient measurement of sorts of currents everywhere, and has wide application prospects.

Description

Technical field [0001] The present invention relates to the field of electronic information technology, in particular to a current measuring device, a current measuring method, and a manufacturing method of the current measuring device. Background technique [0002] At present, the method of measuring current with various ammeters generally involves disconnecting the circuit and connecting the ammeter in series to the circuit for measurement. This causes measurement inconvenience and potential safety hazards for operators and equipment. [0003] Therefore, voltage measurement is often used in actual work to detect the working state of the equipment circuit. But in some cases, real-time measurement of current is necessary. [0004] Existing current clamp products that can measure current without power off are manufactured based on the principle of electromagnetic induction and are limited to the measurement of power frequency AC current. [0005] Therefore, the monitoring, maintenanc...

Claims

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Application Information

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IPC IPC(8): G01R19/00
Inventor 盛毅周梅周韵何晴张舵
Owner CHINA AGRI UNIV
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