| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of nonexistence so far of a wandering prevention system, as a system to prevent wandering beforehand, in which the system is not activated by passage or presence of other than the target wanderer, alarming is also informed only to a guardian possessing a receiver when detected without affecting around, the system is not also noticed by the wanderer by oneself, and is inexpensive and suitable for a private residence. SOLUTION: The system comprises: a transmitter with which the wanderer is equipped; a biological perception sensor immovably installed adjacent to an entrance of a building; a repeater to be in an ON state by converging an input signal of the biological perception sensor and a transmitted signal from the transmitter; and a receiver, held by the guardian, for receiving the transmitted signal from the repeater. COPYRIGHT: (C)2009,JPO&INPIT
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