| 摘要 |
PURPOSE:To prevent a heating device from wrong operation and improve the safety of the heating device by a method wherein a transmission microcomputer is provided to detect a malfunction generated in a processing microcomputer and a transmission line, then the power supplying for the heating device is cut-off and the operation of the heating device is stopped. CONSTITUTION:A microcomputer 15 for processing control and a microcomputer 10 for signal transmission are arranged, the microcomputer 15 controls the heating of a heating device 14, the microcomputer 10 connected with the microcomputer 15 via transmission lines 16-23 transmits and receives the transmission signals having a certain format. The microcomputer 10 detects the regularity of said transmission signals, when detects at least one malfunction in either the microcomputer 15 or the transmission lines, cuts-off the power supply for the heating device 14 by a relay circuit 27. Therefore, the wrong operation such as an abnormal heating and the like in the heating device can be prevented, accordingly, the safety of the heating device can be improved. |
