DETECTING SYSTEM FOR PRESENCE OR ABSENCE OF PERSON ON BED AND MONITORING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a system capable of detecting the presence or absence of a person on a bed with high reliability at low cost and a monitoring system using the same. ;SOLUTION: This system includes a load detection means 2 for detecting the value of the load applied to a bed 1, a determining means 3 for determining whether a person is present or absent on the bed according to a signal from the load detection means 2, a transmission means 4 for transmitting the result of the determination, an alarm means 5 for issuing an alarm according to the result of the determination, and an external switch having a releasing function whereby the alarm means 5 can be shut off, the determining means 3 detecting that the load value detected by the load detection means 2 has exceeded a preset threshold and continued for a predetermined time. Thereafter, if the load value detected by the load detection means 2 is below the preset threshold and continued for a predetermined time, the system determines that the person has left the bed.;COPYRIGHT: (C)1999,JPO