Fault diagnosis system and diagnosis method thereof for optical fiber current sensor

Abstract

The invention discloses a fault diagnosis system for an optical fiber current sensor. The fault diagnosis system comprises a photoelectric detector, a signal conditioning module, an adder circuit module, an AD sampling module and a data processing module. The invention further discloses a fault diagnosis method for the optical fiber current sensor. The system can be used for detecting whether thewhole optical path system of the optical fiber current sensor fails or not; the fault detection system is established on the basis of an optical fiber current sensor measurement system without extra circuit components and systems and extra optical path loss, so that the measurement precision and the like of the optical fiber current sensor are not affected, and effective detection of optical fibercurrent sensor faults can be completed under the conditions of low cost and easy implementation.

Description

technical field [0001] The disclosure belongs to the field of optical fiber current sensors, and in particular relates to a fault diagnosis system and a diagnosis method for an optical fiber current sensor. Background technique [0002] The rapid development of modern industry has put forward higher requirements for the transmission and detection of the power grid, and the traditional high-voltage and high-current measurement methods will face severe tests. With the development of optical fiber technology and material science, the optical fiber current sensing system has a series of advantages due to its good insulation and anti-interference ability, high measurement accuracy, easy miniaturization, and no potential explosion hazard. Sexuality is widely valued by people. In order to ensure the long-term normal and stable operation of the fiber optic current sensor, it is necessary to study the fault detection system of the fiber optic current sensor. In the actual applicati...

AI Technical Summary

Problems solved by technology

In the actual application of fiber optic current sensors, the strength of the optical signal affects the accuracy of the sensor's measured current value. The optical signal transmitted in the optical fiber will inevitably attenuate due to optical path loss, or change due to temperature changes, and even cause the fiber to break. When the optical signal cannot be transmitted, some of the errors in the current measurement value caused by these factors are within the normal range, such as the loss of the optical path;

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