| 摘要 |
PROBLEM TO BE SOLVED: To detect more accurate sensor information, by preventing a current from flowing to a sensor cell R other than the sensor cell R which is to be detected. SOLUTION: This sensor output detection circuit 2 comprises: multiplexers 3 and 4 for respectively switching a row wiring 1a and a column wiring 1b of a sensor mat 1; and a buffer circuit 5 for preventing current from entering another sensor cell R at sensing. When the sensor cell R11 is sensed for example, by making a current flow to the sensor cell R11 via the multiplexers 3 and 4, information of the sensor cell R11 is outputted to an ECU as a partial voltage with a pull-up resistance Rp. An output voltage (detected voltage of R11) of the buffer circuit 5 is applied to the row wiring 1a in which the sensing is not carried out, and the current entering another sensor cell R can be prevented. |
