Transmission path abnormality detection system and transmission path abnormality detecting device

摘要

Problem to be solved: to detect an abnormality such as disconnection or the like of a signal transmission path constituted by a wire harness or the like provided in the moving body without using a dedicated or additional sensor.SolutionA transmission path abnormality detection system for detecting an abnormality of a signal transmission path provided in a mobile bodyConnected to a wireless receiver that receives a wireless signal transmitted from the outside of the mobile deviceAntenna mounted on the moving bodyA radio receiver receiving radio waves via the antennaAbout the radio signal contained in the received radio waveThe SN calculating unit for repeating the signal to noise ratio in the radio wave at a predetermined time interval andAn abnormality determination section for judging whether or not the above described signal transmission path is abnormal is determined based on the calculated signal to noise ratio..Diagram