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Title:
METHOD OF DETECTING PRESENCE OF SUBJECT ON BED
Document Type and Number:
WIPO Patent Application WO/2007/148638
Kind Code:
A1
Abstract:
A method of detecting the presence of a subject on a bed has a load detection step, a determination step, and a first information providing step. The load detection step detects loads acting on portions of a lying surface (61) of the bed by first to fourth load detection means (21a, 21b, 21c, 21d), where the portions of the lying surface (61) are a portion on the right side of the head, a portion on the left side of the head, a portion on the right side of the feet, and a portion on the left side of the feet. The determination step determines whether a predetermined determination formula is satisfied or not on the basis of load values (W1, W2, W3, W4) output from the first to fourth load detection means. The first information providing step provides information on the presence of the subject (H) on the bed when it is determined that the formula is satisfied by the result of the determination in the determination step.

Inventors:
HIROSE, Kazuo (SHOWA DENKO K.K. 480,Inuzuka 1-chome, Oyama-sh, Tochigi 78, 3238678, JP)
Application Number:
JP2007/062202
Publication Date:
December 27, 2007
Filing Date:
June 18, 2007
Export Citation:
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Assignee:
SHOWA DENKO K.K. (13-9, Shiba Daimon 1-chome Minato-k, Tokyo 18, 1058518, JP)
昭和電工株式会社 (〒18 東京都港区芝大門一丁目13番9号 Tokyo, 1058518, JP)
International Classes:
A61G7/05; G01G19/52
Foreign References:
JP2006030120A2006-02-02
JPH0880286A1996-03-26
JPS5945085B21984-11-02
JP3322632B22002-09-09
JP3322632B22002-09-09
JP3093745B22000-10-03
JP2006168484A2006-06-29
Other References:
See also references of EP 2030601A4
Attorney, Agent or Firm:
SHIMIZU, Hisayoshi et al. (Idemitsu Nagahori Building, 4-26 Minamisemba 3-chome,Chuo-ku, Osaka-sh, Osaka 81, 5420081, JP)
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