| 摘要 |
A bed monitoring system (1) includes a substantially rectangular bed (2) for supporting a user (not shown). Bed (2) is longitudinally extending between a bed head and a bed foot and has a periphery that is crossed by the user to move from the 5 bed. Three spaced apart sensors, in the form of respective photo-electric receivers (6, 7 and 8), are mounted to bed (2) and are collectively responsive to the user crossing the periphery for generating a movement signal. Three generators, in the form of spaced apart photoelectric emitters (9, 10 and 11), are mounted to bed (2) for establishing a field in the form of respective beams (12, 13 and 14). These beams are 10 detected by receivers (6, 7 and 8 respectively), and are changed by the user crossing the periphery along which the respective beam extends. Emitters (9, 10 and 11) are contained within a common housing with receivers (6, 7 and 8) respectively. 26--------------------526 70 27 9 2 18 20 30 9-7 23 12 _J 5 6- 1 |
