| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a temperature detection device capable of taking temperature information at a plurality of spots through one port of a microprocessor. <P>SOLUTION: A plurality of temperature sensors 4u, 4w thermally combined respectively on a plurality of heating spots of a detection object are connected in parallel to constitute a temperature detection part 4, and a temperature detection signal Vt acquired by converting a parallel resistance combined value of the temperature sensors 4u, 4w into a voltage signal is inputted into one A/D port of the microprocessor 5. A determination value used as a criterion when determining whether the temperature at the heating spot exceeds a tolerance or not is differentiated between the steady state wherein the temperatures at all the heating spots of the detection object show an equal value and the unsteady state wherein the temperature at one heating spot shows a higher value than the temperature at another heating spot, to thereby determine whether overheat is generated or not in the detection object. <P>COPYRIGHT: (C)2004,JPO |
