| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sensor controller capable of detecting a response variation while restraining influence of a noise. <P>SOLUTION: The sensor controller 1 is constituted to determine the propriety of noise generation timing in S120 and S130 in element impedance measuring processing, and to start up detection processing for a voltage variation in a sensor characteristic detecting circuit 3, in S160, in the timing determined to be not the noise generation timing (NO in determination of the S120 and S130). That is, a central arithmetic processing unit 2 of the sensor controller 1 sets start-up timing of measuring processing for the voltage variation in the sensor characteristic detecting circuit 3 (control part 59 in detail) to timing different from the noise generation timing (heater electrification switching timing, ignition timing). The sensor controller 1 can thereby detect the voltage variation, under the condition where the influence of the noise is restrained from being extended up to an electrifying circuit 40 or an electrifying route 42. <P>COPYRIGHT: (C)2008,JPO&INPIT |
