| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem wherein it is difficult to appropriately respond to trouble of a pressure sensor 36. SOLUTION: This pressure sensor 36 is provided with a reference voltage generation part 36a generating a reference voltage, and a sensing part 36b sensing pressure becoming a sensing object, and outputting a signal in response to it. The output of the reference voltage generation part 36a and that of the sensing part 36 are output to tristate buffers 36c and 36d, respectively. A command line LC is connected to changeover terminals of the tristate buffers 36c and 36d, and the output of either the reference voltage generation part 36a or the sensing part 36b is applied to the output line LC by applying an instruction signal C to the command line LC. COPYRIGHT: (C)2008,JPO&INPIT
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