Provided are an apparatus and method for asset tracking based on a ubiquitous sensor network using a motion sensing. Thus, the passenger conveyor is excellent in design because of a simple appearance of a platform and a vicinity thereof. The joint association score may incorporate parameters such as weighting parameters for signal-to-class modeling of the acoustic signal, language model parameters and scores, and acoustic model parameters and scores. The safety system 38 is operated in response to the final control signal. Portions of a bandpass filter are implemented using electrode patterns on different ceramic tape layers of which selected portions are mutually superimposed, thereby providing self-compensation for changes in mutual coupling caused by small errors in alignment of the ceramic tape layers occurring during manufacturing. A shackle is put between the cover and the head.