| 摘要 |
PROBLEM TO BE SOLVED: To provide a wireless report device, capable of surely detecting a human body even if the environment such as temperature or weather is changed. SOLUTION: The wireless report device comprises a signal change determination means which determines, when a signal intensity detected by a signal intensity detection means is higher or lower than a steady state, that a conductive object such as human body or metal located in the vicinity of an antenna is moved; and a wireless report means for radio-transmitting a report when movement of the conductive object is determined by the signal change determination means. A receiving synchronization means includes a switch for selectively switching a receiving synchronization operation for detecting the conductive object such as human body or metal located in the vicinity of the antenna with a first frequency being set as a synchronous frequency and a radio transmission of report in determination of movement of the conductive object by the signal change determination means with a second frequency being set as the synchronous frequency. COPYRIGHT: (C)2009,JPO&INPIT
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