A wireless networked current non-contact measuring device and method for magnetic sensing units

Abstract

The invention discloses a wireless networked current non-contact measuring device and method for a magnetic sensing unit, comprising a flexible fixed support, a magnetic sensing unit, and a collection and receiving unit, and the magnetic sensing unit is arranged on the flexible fixed support , the magnetic sensing unit is connected to form a closed loop through the converging receiving unit, and the magnetic sensing unit is communicatively connected with the converging receiving unit. When in use, the flexible fixing bracket equipped with the magnetic sensing unit is wrapped around the conductor under test, and connected by the collecting and receiving unit to form a closed loop for detection. According to the Ampere loop theorem, there is a magnetic field around the conductor under test. The current in the conductor to be measured can be calculated by performing numerical integral calculation on the measured values ​​of each of the magnetic sensing units in the closed loop. This design does not contain an iron core, the magnetic induction equipment has strong anti-interference ability, and the detection range is large, and it is not affected by the shape of the measured conductor.

Description

technical field [0001] The invention relates to the technical field of current measurement sensors, in particular to a wireless networked current non-contact measurement device and method for magnetic sensing units. Background technique [0002] With the intensification of industrial electrification, the demand for current measurement technology is no longer limited to the power industry. In addition to accurate measurement, it is also necessary to meet the different needs of various industries in terms of working environment, application convenience, and even volume and weight. On the other hand, with the gradual maturity of technologies such as MENS sensor chip integration, edge computing, and low-power wireless communication, the integration of the Internet of Things and big data with various industrial productions is becoming more and more closely, which will improve the efficiency of industrial production and ensure the reliability of key equipment. In the process of se...

AI Technical Summary

Problems solved by technology

[0003] In terms of current measurement, current transformers are currently the most widely used devices, but current transformers with different principles face application problems. For example, electromagnetic current transformers have an iron core structure, and their volume and weight are suitable for portable equipment and other applications. Difficult to accept, and there are problems such as ferromagnetic resonance and iron core magnetization; the Rogowski coil measurement principle cannot measure DC signals, and is easily affected by external interference; the stability of the optical measurement principle is poor, and the technology has not yet matured

In addition, current transformers need to use different designs of current transformers for different measuring conductors and measuring currents, and their versatility is poor

Finally, the measurement signal of the current transformer often requires an additional digital-to-analog conversion device to realize digitization, which makes it difficult for it to play a role in the Internet of Things technology

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