发明名称 |
Pulse rate monitor |
摘要 |
A pulse rate monitor having an enhanced accuracy, reduced power consumption and reduced calculation time comprises a pulse wave extraction circuitry for extracting pulse wave frequency components from a power spectrum output of a pulse wave sensor and a movement sensor, and a pulse rate calculation circuit for calculating a pulse rate in accordance with the extracted pulse wave frequency components. A display device may be included to display the calculated pulse rate. In order to reduce power consumption, unnecessary circuitry may be deactivated and unnecessary operations may be avoided by use of a changing circuit which changes the method of calculation when movement of the user is not detected. Accordingly, when no movement has been detected for a predetermined period of time, the pulse rate may be calculated based upon a direct output of the pulse rate sensor, while the frequency analysis circuitry and calculation circuitry may remain deactivated. |
申请公布号 |
US5697374(A) |
申请公布日期 |
1997.12.16 |
申请号 |
US19940355503 |
申请日期 |
1994.12.14 |
申请人 |
SEIKO INSTRUMENTS INC. |
发明人 |
ODAGIRI, HIROSHI;TSUBATA, KEISUKE;NAKAMURA, CHIAKI;SAKUMOTO, KAZUMI;NOSAKA, NAOKATSU;HAYAKAWA, MOTOMU |
分类号 |
A61B5/0245;A61B5/024;A61B5/11;(IPC1-7):A61B5/00 |
主分类号 |
A61B5/0245 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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