Patent ID: 9573619
Date: 2017-02-21
CPC Classifications: B62D,G01L,G08C,H04Q

Claim:
1. A physical quantity detecting device comprising: a physical quantity detector configured to detect a physical quantity and to output a physical quantity detection signal; and a controller configured to receive the physical quantity detection signal outputted from the physical quantity detector via a transmission line and to perform a control operation on the basis of the physical quantity, wherein the physical quantity detector outputs the physical quantity detection signal and a diagnostic signal for detecting abnormality of a transmission system between the controller and the physical quantity detector to the controller via a noise filter, the controller includes an abnormality determining unit configured to determine the abnormality of the transmission system on the basis of the diagnostic signal when receiving the diagnostic signal, and the abnormality determining unit determines whether or not the noise filter is abnormal by detecting a change of at least one of a rise and a fall of the received diagnostic signal.