Vector light field traveling wave enhanced current sensor

Abstract

The invention relates to a vector light field traveling wave enhanced current sensor. The enhanced current sensor comprises a laser light source, a polarization spatial light modulator and an isosceles triangle cavity, the polarization spatial light modulator and the isosceles triangle cavity are sequentially arranged on an emission path of the laser light source, the isosceles triangle cavity is provided with two emergent light fields, and the two emergent light fields are provided with a first light field vector analysis component and a second light field vector analysis component respectively. The isosceles triangle cavity is arranged in the space of the magnetic field generated by the detected current, the corresponding relation between the magnetic field information and the current magnetic effect of the space where the alkali metal atom gas chamber is located is obtained through analysis, and the detected current information is obtained. The current magnetic effect and the all-optical method weak magnetic detection technology are combined, the vector light field traveling wave characteristic and the light field cavity enhancement principle are exerted, the current sensing performance is improved, the current magnetic effect is detected through an optical method, then current information is obtained, the light field does not have the electromagnetic interference behavior, and the good anti-electromagnetic interference characteristic is achieved.

Description

technical field [0001] The invention belongs to the technical field of current detection equipment, in particular to a current sensor with vector light field traveling wave enhancement. Background technique [0002] Current intensity is the amount of electricity passing through any cross-section of a conductor per unit time, referred to as current, the current symbol is I, and the unit is ampere, which is represented by the letter A. The current sensor is a detection device that can feel the information of the measured current, and can transform the information sensed by the detection into an electrical signal that meets certain standards or other required forms of information output according to certain rules. It widely exists in the fields of power transmission, digitization, automation, Internet of Things, power supply system, transformer station, lightning protection, electrical engineering, electronic technology, etc., and plays an important role. [0003] In the prior...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low anti-interference and poor sensing sensitivity of existing current sensors

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