发明名称 ABNORMALITY DETECTING METHOD OF TEMPERATURE CONTROLLER
摘要 PURPOSE:To judge the abnormality of a temperature controller accurately even when a detecting element having high specific-value temperature dependency is used by judging the abnormality after heating or cooling a body to be detected. CONSTITUTION:A control signal ENPOWER for heating the device 1 to be detected is inputted firstly to heat the device 1 to be detected, and the output of the detecting element 2 enters a linear region. When the device is heated up to a specific temperature, a comparator 5 outputs 0, and a gate 7 outputs 0 and a switch circuit turns off to cut off power supply to the device to be detected. Although the element has high specific-value temperature dependency, the judgement of real abnormality is made as far as an output of high-temperature abnormality or heat breaking down is outputted from comparators 3 and 4 when a signal ENERROR is inputted to a gate 9, thereby outputting a signal ERROR. The judgement is made after the temperature of the device 1 to be detected is raised above the specific value, but may be made after the device is cooled.
申请公布号 JPS59202478(A) 申请公布日期 1984.11.16
申请号 JP19830077612 申请日期 1983.05.04
申请人 RICOH KK 发明人 FURUKAWA NOBORU
分类号 G03G15/20 主分类号 G03G15/20
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