Signal acquisition system based on vehicle power domain

The invention belongs to the technical field of vehicle area controllers, and particularly relates to a signal acquisition system based on a vehicle power domain, which comprises an area controller and a sampling module configured on the area controller and used for detecting the action states of a vehicle pedal and a gear; the power management module is used for providing working voltage for the sampling module; the main control module is configured with at least one safety port group, and comprises a verification signal input port used for obtaining a reference voltage for verifying the safety port group; the first signal input port and/or the second signal input port are/is used for acquiring a feedback signal output by the sampling module and an electric signal corresponding to the working voltage respectively; the redundancy check port group comprises a high-precision signal input port and is used for acquiring a feedback signal output by the sampling module; wherein the main control module is also used