| 摘要 |
PURPOSE:To decrease or prevent abnormality by indicating the notice after performing the prospective view about the abnormality of a detecting material by obtaining a variation rate of detecting signal on the previous stage of abnormality and using the variation rate and a detecting signal. CONSTITUTION:The temperature of cooling water for engine is detected at 1 and when the water temperature is less than the set value, microcomputer 3 calculates the rising rate. On the basis of this rising rate and the water temperature, a alarm display 6 is given by performing an expectation of the abnormality of overheating of engine. By this reason, overheating notice can be informed to the operator and early troubleshooting can be performed. Also, when the engine is set is overheating condition, voice alarm ''Overheat'' is given through a voice generating circuit 8 to advise to the operator strongly. To stop the voice alarm, a manual switch 7 should be turned on to stop the operation of the voice generating circuit 8. In case when circulation of cooling water is stopped, a sensor 2 detects the flow and makes to generate a voice alarm of ''faulty circulation while cooling''. |
