| 摘要 |
PROBLEM TO BE SOLVED: To provide a sensor operation detection device, a sensor operation detection system, and a sensor operation detection method that avoid an increase in size of the device due to an increase in mounting area of a sensor-side circuit, and accurately determine abnormality of a sensor even when a controller has a high-pass filter.SOLUTION: By employing a pulse signal as a test signal input to an acceleration sensor module 5, the acceleration sensor module 5 can generate a short-pulse sensor output signal as a response signal to the pulse signal. The high-pass filter 72 can generate a signal with relatively large time variation corresponding to the sensor output signal in a short time, so it is easier to determine a threshold of a signal voltage as compared with a case in which, for example, the sensor output signal has small time variation and takes a long time for the variation. Namely, a sensor operation detection system 100 does not increase a mounting area of a sensor-side circuit, can avoid an increase in size of the device, and can accurately determine a defect of the acceleration sensor module 5. |
