Laser power supply loop performance detection device and method and terminal equipment

Abstract

The embodiment of the invention relates to a laser power supply loop performance detection device and method and terminal equipment, which are applied to a high-voltage direct-current measurement system. The high-voltage direct-current measurement system comprises a resistance box, a far-end module and a merging unit connected with the far-end module through an optical fiber. The laser power supply loop performance detection device comprises a laser attenuation modulator and a digital wave recording and analyzing module connected with the laser attenuation modulator. The working characteristics of the merging unit, an optical fiber loop and the far-end module in the high-voltage direct-current measurement system are tested in a segmented manner to acquire sampling data for segmented testing; the sampling data are analyzed in the digital wave recording and analyzing module, so that the performance of the laser power supply loop of the high-voltage direct-current measurement system can be detected, faulty units or modules can be detected, and accurate fault positioning can be realized; the technical problem that an existing high-voltage direct-current measurement system only judges whether a fault occurs or not by adopting the driving current of the merging unit, and the fault position cannot be accurately diagnosed is solved.

Description

technical field [0001] The present invention relates to the technical field of power measurement, and in particular, to a device, method and terminal equipment for detecting the performance of a laser power supply circuit. Background technique [0002] At present, the high-voltage DC measurement system is mainly composed of a resistance box, a remote module, an optical fiber loop and a merging unit. The merging unit mainly performs closed-loop adjustment and control of the laser drive current and optical power in the merging unit according to the self-check information fed back by the remote module. The merging unit sends out an alarm message or blocks the laser according to the set driving current step value. The high-voltage DC measurement system monitors the overall laser power supply performance of the driving circuit of the merging unit and the laser, the optical fiber circuit and the laser power supply circuit of the remote module. However, the cause of the high drivin...

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Problems solved by technology

[0003] The embodiment of the present invention provides a laser power supply circuit performance detection device, method and terminal equipment, which are used for the technical problem that the existing high-voltage direct current measurement system only uses the driving current of the merging unit to judge whether a fault occurs, but cannot accurately diagnose the fault location

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