THE DEVELOPMENT OF HIGH-SPEED SYNCHRONIZED AND INTELLIGENT AC-SIGNAL SAMPLING BOARD WITH AT BUS
Zhang Yi (Shangdong Electric Science & Research Institute. 250021. Ji'nan, China)
A high-speed synchronized and intelligent AC signal samp1ing board with AT bus is developed. which employs lntel 8Ol86 CPU as its core. It implements l6-channel synchronous and equal-time cycle sampling with speed up to l600 samples per second (the highest speed of single channel reaches loO kilo samples per second) and O. 1 % accuracy. The functions of automatic gain adjustment on sampling values as well as fault waveform recording are also accomplished. It meets the requirements of data acquisition of integrated substation automation.