Differential signal and waveform data co-acquisition control system

Abstract

The invention relates to a differential signal and waveform data co-acquisition control system. The system comprises a signal conversion unit matched with an input cable, the signal conversion unit issequentially connected with a differential signal processing unit and a single-ended signal processing unit, the differential signal processing unit is provided with an analog signal sampling end ina matched mode, and the single-ended signal processing unit is provided with a digital signal sampling end in a matched mode. According to the invention, the fusion problem of differential signal sampling and single-ended signal sampling is effectively solved; under the condition that the differential sampling is not influenced, a hardware circuit required by single-ended sampling is realized; inelectric power system current and voltage acquisition monitoring, a special metering chip is allowed to complete metering data acquisition, waveform data high-speed acquisition is also allowed to be realized through an MCU independent AD single-ended sampling port, the working efficiency is high, subsequent direct processing and output by adopting a control part are facilitated, the result is visual, and analysis and processing are facilitated.

Description

technical field [0001] The invention relates to the technical field of measuring electric variables and measuring magnetic variables, in particular to a control system for co-acquisition of differential signals and waveform data. Background technique [0002] The co-acquisition of differential signals and waveform data refers to the simultaneous collection of power metering parameters and waveform data during the electricity consumption monitoring process. [0003] In the prior art, in the electrical monitoring and power monitoring equipment, most of the measurement parameters such as power quantity and voltage are collected and analyzed by current-specific metering chips, while the power waveform data is collected and analyzed by an independent AD. The former generally uses differential signals for analog data acquisition, while the latter uses single-ended AD acquisition for sampling. The structures of the two acquisition hardware are different. [0004] The acquisition s...

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problem that in the prior art, the power monitoring equipment on the market generally uses a single AD sampling or a single metering chip for processing, the measurement is complicated, and the measurement results cannot be obtained at one time, which leads to subsequent co

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