| 摘要 |
PROBLEM TO BE SOLVED: To continue operation while avoiding lowering of operation accuracy by maintaining operation of a microcomputer even when disconnection, short-circuit, etc., of analog equipment are caused. SOLUTION: A control unit 13 loaded onto a combine harvester 1 is equipped with the microcomputer 14 connected to analog input equipment A, a power source circuit 15 for supplying the power source to the microcomputer 14 and the analog input equipment A. The power source circuit 15 is dividedly composed of a first power source circuit 15D (a microcomputer power source system) for carrying out power source supply to a power source input terminal Vcc of the microcomputer 14 and a second power source circuit 15A (an analog power source system) for performing the power source supply to the analog input equipment A (including the analog power source input terminal AVcc of the microcomputer 14). The operation of the microcomputer 14 is maintained even when the disconnection, short-circuit etc., of the analog input equipment A are caused. COPYRIGHT: (C)2004,JPO
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