APPARATUS FOR ACCUMULATING ABNORMALITY INFORMATION OF SENSOR

摘要

PURPOSE:To investigate an abnormality cause by accumulating abnormality information or the number of times of abnormality at every rank in a non- volatile memory by a control means, by comparing the output voltage of a sensor supplied to an engine with an abnormality judge level to judge the abnormality of the sensor. CONSTITUTION:The output voltage of a sensor 1 subjected to the control of an engine under the control of the control means 5 of a sensor abnormality information accumulating apparatus is compared with an abnormality judge level to perform the judgment of abnormality and the judged result is accumulated in a non-volatile memory 4. A microcomputer muC15 having a non-volatile memory 16 is used as the control means 5. The microcomputer muC15 carries out A/D converting routine processing when the conversion timing of the A/D converter 14 of various sensors 10-12 arrives and judges whether the output voltages of various sensors 10-12 are at a abnormality judge level or more. According to the judged result, abnormality information or the number of times of abnormality at every rank is accumulated in the memory 16 to be outputted to an output apparatus 13.