| 摘要 |
PURPOSE:To monitor a variety of body movements of a number of persons concentrically in lump at a low cost at a same time by connecting a plurality of beds having the bed equipped with a filter circuit, amplifying circuit, counting circuit, and a piezoelectric element with a display means and displaying the output signal of each counting circuit. CONSTITUTION:When the piezoelectric element 11 arranged on each of a plurality of beds 12 is deformed by the body movement such as the heart beat, aspiration, and turning-over in bed of a user on a bed, a voltage due to the piezoelectric effect is generated from the piezoelectric element 11. Only the prescribed frequency component among the generated voltage output passes through a filter circuit 12, and amplified by an amplifying circuit 13, and the number of heart beats, aspiration frequency, and the body movement such as turning- over in bed are counted by a counting circuit 14. The counting data of each user is transmitted to a display means 18 through a communication cable 16, and displayed on a display 17 in lump. Accordingly, the body movements such as the number of heart beats, aspiration frequency and the turning-over in bed of a number of persons can be monitored concentrically in lump at a low cost for the actual use. |
