1. A method to detect misalignment of sensors used in train inspection systems, said method comprising: receiving inputs from a train inspection sensor that is coupled to a railroad track; determining a position of the train inspection sensor using a motion detector; determining a baseline position of the train inspection sensor; monitoring the train inspection sensor to determine whether the train inspection sensor has shifted from the baseline position by a predetermined amount; and identifying the inputs received from the train inspection sensor as at least one of acceptable or not acceptable based on the determined position of the train inspection sensor.