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Non-contact optical current sensor based on magnetorheological effect

A technology of current sensor and magneto-rheological effect, which is applied in the direction of measuring current/voltage, instruments, measuring electric variables, etc., can solve the problems of low sensitivity and poor flexibility of current sensor, and achieve the effect of improving detection sensitivity

Pending Publication Date: 2022-02-08
上海电铠智能科技有限公司
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Problems solved by technology

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

Method used

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  • Non-contact optical current sensor based on magnetorheological effect

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Embodiment 1

[0024] Refer to attached figure 1 , a non-contact optical current sensor based on the magneto-rheological effect of this embodiment, including a laser light source 1, a vector spatial light modulator 2, and a magneto-rheological fluid component 3 that are sequentially arranged on the outgoing beam path of the laser light source 1 , the magnetorheological fluid component 3 is arranged in the magnetic field area generated by the current 7 to be detected, and the transmission optical field path of the magnetorheological fluid component 3 is provided with a defocused optical imaging system 4, and the defocused optical imaging system The image space of the system 4 is provided with a photoelectric sensing component 5 , and the photoelectric sensing component 5 is connected with a data processing unit 6 in communication. The output beam of the laser light source 1 is transformed into a vector beam after passing through the vector spatial light modulator 2, and then irradiated on the...

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Abstract

The invention discloses a non-contact optical current sensor based on a magnetorheological effect. The sensor comprises a laser light source, a vector spatial light modulator and a magnetorheological fluid component which are sequentially arranged on an emergent light beam path of the laser light source, the magnetorheological fluid component is arranged in a magnetic field area generated by current to be detected, and a defocus optical imaging system is arranged on a transmission light field path of the magnetorheological fluid component. A photoelectric sensing part is arranged in an image space of the defocus optical imaging system and is in communication connection with a data processing unit. The current change generates a magnetic field to influence the micro-nano structure and the macroscopic optical behavior of the magnetorheological fluid part so as to adjust the optical characteristics of the vector light field interacting with each other, and the data processing unit obtains the related numerical information of the current to be detected by analyzing the optical characteristics of the information transmission light field. The detection sensitivity is remarkably improved through the vector characteristic and the optical parameter precision detection technology of the optical field.

Description

technical field [0001] The invention belongs to the technical field of current sensors, in particular to a non-contact optical current sensor based on the magneto-rheological effect. Background technique [0002] Current refers to the amount of electricity that passes through any cross-section of a conductor per unit time. The free charges in the conductor move in a regular direction under the action of an electric field to form a current. The current sensor is a detection device that can sense the information of the measured current and output the information sensed by the detection. Current sensing widely exists in electronic systems, power transmission, transformer stations, lightning protection, electrical engineering, automation , Internet of Things, power supply systems, life sciences and other fields, and play an important role, the demand for anti-interference, high sensitivity, and non-contact current sensing is becoming more and more prominent. [0003] In the pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
CPCG01R19/0061
Inventor 高秀敏赵建民郭修立赵建涛王喜贵
Owner 上海电铠智能科技有限公司