Title:
【発明の名称】在床モニタ装置
Document Type and Number:
Japanese Patent JP2995801
Kind Code:
B2
Abstract:
PURPOSE:To monitor the on-bed states of a number of persons concentrically in lump at a same time by connecting a plurality of beds having the beds equipped with a filter circuit, amplifying circuit, rectifying circuit, integration circuit, comparison circuit, and a piezoelectric element with a display means and displaying the output signal of the comparison circuit. CONSTITUTION:When a piezoelectric element 1 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 human body on a bed, a voltage due to the piezoelectric effect is generated from the piezoelectric element 1. Only the prescribed frequency component among the generated voltage output passage through a filter circuit 2, and amplified by an amplifying circuit 3, and after rectified by a rectifying circuit 4, the component is integration-calculated by an integration circuit 5. If a comparison circuit 6 judges that the output signal supplied from the integration circuit 5 is within a previously determined set range, output is performed, and the output signal of the comparison circuit 6 on each bed 12 is displayed in lump on the display 10 of a display means 9 through a communication means 8. Accordingly, the on-bed states of a number of persons can surely be monitored concentrically in lump free from the erroneous operation.
Inventors:
Hiroyuki Ogino
Application Number:
JP13589190A
Publication Date:
December 27, 1999
Filing Date:
May 25, 1990
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
A61B5/00; A61B5/11; (IPC1-7): A61B5/00
Domestic Patent References:
| JP5485584A | ||||
| JP55160539A | ||||
| JP1174917A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)