发明名称 |
DEVICE AND METHOD FOR MONITORING VARIATION OF ANIMAL RESPIRATION AND/OR HEARTBEAT |
摘要 |
A method of monitoring variation in either or both respiration and heartbeat of an animal comprising the steps of vibrating a piezoelectric vibrator by continuously or intermittently applying an AC voltage of a frequency corresponding to a natural resonance frequency of the vibrator to the piezoelectric vibrator under such condition that the vibrator is placed directly or indirectly in contact with the surface of the animal's body; collecting a current generated by the vibrator under vibration; and calculating an impedance of the vibrator from a value of the current and a value of the AC voltage applied to the vibrator so as to continuously or intermittently detect variation of the impedance by lapse of time is effective to monitor variation of respiration and/or heartbeat of animals including humans who are in sleep or under exercise and take a variety of positions with high sensitivity. |
申请公布号 |
US2015011899(A1) |
申请公布日期 |
2015.01.08 |
申请号 |
US201314373770 |
申请日期 |
2013.01.23 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA ;UEDA JAPAN RADIO CO., LTD. |
发明人 |
Shigeto Kazuhide;Kikuchi Hirokazu;Ohya Shigemasa |
分类号 |
A61B5/0205;A61B5/00 |
主分类号 |
A61B5/0205 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
Toyota-shi, Aichi JP |