| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a particulate substance detection sensor capable accurately controlling a temperature of a heating element for heating the particulate substance detection sensor which detects an amount of a particulate substance included in a measured gas by detecting an electric resistance formed by the particulate substance accumulated between a pair of electrodes facing each other leaving a prescribed interval between each other. <P>SOLUTION: The particulate substance detection sensor 1 has a leak current detection means 40 for detecting a leak current signal (ΔV) which leaks to the detection electrodes 110 and 120 from the heat element 150 due to a decrease of an insulation resistance R<SB POS="POST">AL</SB>of heat-resistant insulating substrates 100 and 130 accompanying heating, as a temperature detection means for detecting a heating temperature of the heating element 150. <P>COPYRIGHT: (C)2012,JPO&INPIT |
