| 摘要 |
PROBLEM TO BE SOLVED: To provide an entry/exit detection system which is excellent in cost-effectiveness and does not require complicated equipment.SOLUTION: A detection system for detecting a subject's arrival at and passing direction through a doorway is provided. The system comprises magnets attached to a doorway, a communication device, which is a smartphone in one embodiment, and a server. The magnets are positioned to create a magnetic field across the doorway. When the subject having the smartphone passes through the doorway, a magnetometer in the smartphone senses perturbations caused by the magnetic field and generates signals corresponding thereto, and a processor of the smartphone processes the signals to detect the subject's arrival at and passing direction through the doorway. The data generated by the processor and a unique identification associated with the smartphone is transmitted to the remotely located server. |
