A multi-channel data acquisition synchronization system and method

Abstract

The invention provides a multi-channel data acquisition synchronization system. The multi-channel data acquisition synchronization system comprises a GPS timing module, an ARM base board, an information sampling board and a computer, wherein the GPS timing module sends the serial port data of the GPS absolute time and second pulse signals to the ARM base board; the ARM base board receives the serial port data and the second pulse signals, implements multi-channel splitting, and then sends the data and signals to the information sampling board; the information sampling board resolves, records and acquires the data and sends the data to the computer; and the computer receives, stores and reads the data sent by the information sampling board, draws a waveform curve graph, and analyzes the circuit data according to the waveform curve graph. The circuit data is acquired by adopting the multi-channel data acquisition synchronization system provided by the invention, no signal interference exists between each acquisition channel, each channel has a uniform time reference, and thus the data with higher accuracy can be acquired.

Description

Technical field [0001] The invention relates to the field of ultra-high voltage power grid measurement devices, in particular to a multi-channel data acquisition synchronization system and method. Background technique [0002] At present, in the multi-channel high-speed data acquisition of UHV power grids or other power grids, in order to simultaneously record multi-channel data at a location and analyze fault point information, it is necessary to collect online monitoring data of multiple devices, which requires data collection equipment at different locations. With a unified time base, if the synchronization accuracy of multiple devices is not high, the collected circuit data does not have reference analysis value. [0003] At the same time, the fault waveform in the UHV power grid or other power grids has the characteristics of large current and short duration. This high-frequency and high-current data will cause serious mutual interference between the channels of the collected ...

AI Technical Summary

Problems solved by technology

[0002] At present, in the multi-channel high-speed data acquisition of UHV power grid or other power grids, in order to record multi-channel data at one location at the same time and analyze fault point information, it is necessary to collect online monitoring data of multiple devices, which requires data acquisition equipment at different locations With a unified time reference, if the synchronization accuracy of multiple devices is not high, the collected circuit data does not have reference analysis value

[0003] At the same time, the fault waveform in the UHV power grid or other power grids has the characteristics of large current and short duration. This kind of high-frequency and high-current data will cause serious mutual interference between the channels of the collected data, such as in the 3-channel In data acquisition, one of the channels has an input, even if the other two channels have no signal input, there will be a large series of disturbance current and voltage, and the crosstalk between the channels will greatly affect the stability of the instrument and the accuracy of the measurement sex

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