JP2011141238A - 水分検知装置 - Google Patents
水分検知装置 Download PDFInfo
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- JP2011141238A JP2011141238A JP2010003134A JP2010003134A JP2011141238A JP 2011141238 A JP2011141238 A JP 2011141238A JP 2010003134 A JP2010003134 A JP 2010003134A JP 2010003134 A JP2010003134 A JP 2010003134A JP 2011141238 A JP2011141238 A JP 2011141238A
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Abstract
【解決手段】コイルとコンデンサからなる共振回路部14と、該共振回路部に接続された、水分が付着すると抵抗値が変化するセンサ部13と、発振回路部21からの送信電波により、前記共振回路部は反射電波を発生させ、該反射電波を受信する受信回路部24と、該受信回路部に、受信した前記反射電波の解析回路26を備え、その減衰振動の波形解析結果に基づいて、前記センサ部に付着した水分を検知する。反射電波の減衰振動波形の解析は、発振OFF直後の電圧と、その後一定期間経過後の電圧を比較することにより行う。
【選択図】図4
Description
α=−ln(i/i0)/t となる。例えば、発振OFF(t0)から、0.01ms後の値をi0、0.04ms後の値をi、0.04−0.01=0.03msをtとして計算すると、この場合の減衰定数αは約14000〔s−1〕となる。
Claims (6)
- コイルとコンデンサからなる共振回路部と、
該共振回路部に接続され、水分によって電気的導通および/または抵抗値変化を生じるように構成されたセンサ部と、
発振回路部からの送信電波により、前記共振回路部は反射電波を発生させ、該反射電波を受信する受信回路部と、
該受信回路部が受信した前記反射電波を解析する解析回路を備え、
該解析回路による解析結果に基づいて、前記センサ部における水分を検知する、水分検知装置。 - 前記反射電波の減衰振動波形の解析から、減衰定数を検知し、該減衰定数から前記センサ部における水分を検知する、請求項1に記載の水分検知装置。
- 反射電波の減衰振動波形の解析は、反射電波における減衰振動波形の少なくとも2つのタイミングの電圧を比較することによる、請求項1に記載の水分検知装置。
- 反射電波の減衰振動波形の解析は、発振OFF直後の電圧と、その後一定期間経過後の電圧を比較することによる、請求項1に記載の水分検知装置。
- 前記共振回路部には水分が付着しないように構成されている、請求項1に記載の水分検知装置。
- 前記センサ部は少なくとも2本の導電性糸を長手方向に配置した異方性導電織布からなる、請求項1に記載の水分検知装置。
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JP2010003134A JP5515111B2 (ja) | 2010-01-08 | 2010-01-08 | 水分検知装置 |
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JP2010003134A JP5515111B2 (ja) | 2010-01-08 | 2010-01-08 | 水分検知装置 |
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JP2011141238A true JP2011141238A (ja) | 2011-07-21 |
JP5515111B2 JP5515111B2 (ja) | 2014-06-11 |
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JP2010003134A Expired - Fee Related JP5515111B2 (ja) | 2010-01-08 | 2010-01-08 | 水分検知装置 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106226363A (zh) * | 2016-07-12 | 2016-12-14 | 无锡市华东电力设备有限公司 | 一种保证电力设备安全运行的监测系统 |
CN106645215A (zh) * | 2017-01-22 | 2017-05-10 | 中国农业大学 | 基于高频电磁波的玉米果穗含水率测量装置 |
WO2017094794A1 (ja) * | 2015-12-02 | 2017-06-08 | 株式会社村田製作所 | 水分検出用rfidタグ付き衛生用品 |
JP2017150889A (ja) * | 2016-02-23 | 2017-08-31 | 国立大学法人山形大学 | おむつ用液体検知センサおよび液体検知装置 |
EP3184030A4 (en) * | 2014-08-22 | 2017-12-06 | Fujitsu Limited | State estimating method, state estimating system, clothing, and monitoring system |
CN109716112A (zh) * | 2016-08-02 | 2019-05-03 | 特夫斯电子有限责任两合公司 | 用于测量起吸收作用的卫生用品的方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6146779B2 (ja) * | 1980-10-27 | 1986-10-16 | Kett Electric Lab | |
JP2002224151A (ja) * | 2001-01-30 | 2002-08-13 | Matsushita Electric Works Ltd | おむつ交換頃合センサ及びおむつ交換頃合検知装置 |
US6832507B1 (en) * | 1998-09-11 | 2004-12-21 | Telesensing Holding B.V. | System for detecting the presence of moisture |
JP2007240470A (ja) * | 2006-03-13 | 2007-09-20 | Kuraray Co Ltd | 尿漏れセンサー及び尿漏れ検知オムツ |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6146779B2 (ja) * | 1980-10-27 | 1986-10-16 | Kett Electric Lab | |
US6832507B1 (en) * | 1998-09-11 | 2004-12-21 | Telesensing Holding B.V. | System for detecting the presence of moisture |
JP2002224151A (ja) * | 2001-01-30 | 2002-08-13 | Matsushita Electric Works Ltd | おむつ交換頃合センサ及びおむつ交換頃合検知装置 |
JP2007240470A (ja) * | 2006-03-13 | 2007-09-20 | Kuraray Co Ltd | 尿漏れセンサー及び尿漏れ検知オムツ |
Non-Patent Citations (1)
Title |
---|
大森 学,小林 丈士: "「スパイラル共振形水分センサを用いた布の非接触水分測定」", 電気学会論文誌E, vol. 118, no. 9, JPN6014009259, 1 September 1998 (1998-09-01), pages 431 - 432, ISSN: 0002760585 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3184030A4 (en) * | 2014-08-22 | 2017-12-06 | Fujitsu Limited | State estimating method, state estimating system, clothing, and monitoring system |
WO2017094794A1 (ja) * | 2015-12-02 | 2017-06-08 | 株式会社村田製作所 | 水分検出用rfidタグ付き衛生用品 |
JPWO2017094794A1 (ja) * | 2015-12-02 | 2018-10-04 | 株式会社村田製作所 | 水分検出用rfidタグ付き衛生用品 |
US11357668B2 (en) | 2015-12-02 | 2022-06-14 | Murata Manufacturing Co., Ltd. | Sanitary article equipped with moisture-detecting RFID tag |
JP2017150889A (ja) * | 2016-02-23 | 2017-08-31 | 国立大学法人山形大学 | おむつ用液体検知センサおよび液体検知装置 |
CN106226363A (zh) * | 2016-07-12 | 2016-12-14 | 无锡市华东电力设备有限公司 | 一种保证电力设备安全运行的监测系统 |
CN109716112A (zh) * | 2016-08-02 | 2019-05-03 | 特夫斯电子有限责任两合公司 | 用于测量起吸收作用的卫生用品的方法 |
CN109716112B (zh) * | 2016-08-02 | 2021-11-19 | 特夫斯电子有限责任两合公司 | 用于测量起吸收作用的卫生用品的方法 |
CN106645215A (zh) * | 2017-01-22 | 2017-05-10 | 中国农业大学 | 基于高频电磁波的玉米果穗含水率测量装置 |
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