ANALOG DATA COLLECTOR

PURPOSE:To provide an analog data collector which is capable of storing average analog data at the instant of a monitor device, collecting data before and after a control value is fallen and efficiently utilizing a storage part. CONSTITUTION:A sampling is performed for the analog data from a monitoring device, plural generations of the data are stored in a first storage part (H. S memory) 5, the latest data is taken out from the storage data at a fixed interval, plural generations of the data are stored in a second storage part (M. S memory) 6, the average data of the storage data of the second storage part 6 of the period every fixed period is determined, plural generations of the data are stored in a third storage part (MIN memory) 8, further, the latest average data is taken out at a fixed interval from the storage data, and the plural generations of the data are stored in a fourth storage part (HALF memory) 9. By comparing each sampling data with a control value, the fall of the control value is detected, the processings of the third and fourth storage parts 8, 9 are made to stop at the time of the detection, the processings of the first and second storage parts 5, 6 are made to stop at a point of time when data corresponding to each fixed generation is stored.