CONFIGURABLE DEVICE FOR MONITORING VIBRATION AND SWING STATES OF HYDRAULIC TURBINE SET, AND DATA ACQUISITION METHOD

摘要

Disclosed are a configurable device for monitoring vibration and swing states of a hydraulic turbine set, and a data acquisition method. In the monitoring device, a power supply module, a central processing unit module and a plurality of high-speed analogue signal acquisition modules (1, 2,,, n) are successively arranged on a module bottom board in a pluggable manner. The high-speed analogue signal acquisition modules can be freely configured according to the difference of unit types or numbers of measuring points. The data acquisition method comprises: when a sampling clock arrives, an FPGA sending out a sampling signal SAMCLK to start sampling, ADs of all the channels simultaneously carrying out data acquisition, and the ADs returning, after sampling is completed, ADBUSY signals ; when receiving the ADBUSY signals of the ADs of the first channel, the FPGA beginning to successively read, from the first channel, sampling values of the ADs of all the channels so as to upload same to an embedded processor module; and when the next sampling clock arrives, repeating the above processes and continuously carrying out sampling. Sampled data of all the channels are all sampled at the same moment, thereby ensuring the accuracy and effectiveness of subsequent data analysis.