A pedestrian passage detection method by using spinning magnets on corridors

The passage event on the specific spot is one of the useful information for position estimate. If we can detect the passage of the specific spot, we could contribute to the field of the position estimate because it is available for movement course identification, and the correction of the position estimate error. We suggest pedestrian passage detection methods by using magnets. We make the characteristic magnetic field as a marker. We detect the pedestrian passage by reading a marker by a smartphone device. We generate a magnetic field marker by rotating magnets. We can acquire a passage direction by rotating two magnets at different frequencies. We can detect a passage with an accuracy rate of 100 percent and a passage direction with an accuracy rate of 94 percent when the distance between magnets and a smartphone is less than 75cm.