| 摘要 |
PURPOSE:To prevent a runaway of actuation and to inform a reset state of the runaway by always detecting a runaway state and resetting forcibly a processing circuit. CONSTITUTION:The actuation of an electronic range 8 is controlled by processing circuits 2 and 6 consisting of microcomputers. These circuits 2 and 6 deliver pulse signals of fixed cycles through terminals 2-1 and 6-1 by a program stored previously as long as both circuits 2 and 6 are working in a normal state respectively. When the circuits 2 and 6 have runaways, said pulse signals disappear. These pulse signals are supplied to terminals 2-2 and 6-2 of circuits 2 and 6. At the same time, the forcible reset signals are delivered to terminals 2-3 and 6-3 to monitor both circuits 2 and 6 with each other. As a result, the runaways of both circuits 2 and 6 caused by static electricity, etc. are detected by the disappearance of said pulse signals. Then forcible reset signals are transferred to set the circuits 2 and 6 in their initial states. And at the same time, a runaway informing signal is delivered to a speaker 1. |
