| 摘要 |
PURPOSE:To improve reliability of gate control by calculating opening of a gate from water level data by a terminal processor and making gate operation possible when the result of calculation is the same with that of a central processor or when only the terminal processor is normal. CONSTITUTION:Water level data detected by a water level gauge 1 are inputted to a terminal processor 4. The terminal processor 4 calculates gate opening by operation, and at the same time, sends the water level data to a central processor 2 through a transmitting device 3. The central processor 2 calculates the water level data and transfers the result to the terminal processor 4. The terminal processor 4 compares the result of its own calculation of gate opening with received result of calculation of the central processor 2 and when they coincide, or when the result of calculation of the terminal processor 4 is normal, outputs a signal that makes gate driving possible to a gate driving device 6 through an interface 5. When they do not coincide, the processor gives an alarm and stops driving current.
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