Pulse wave detection device, device control device, and pulse wave detection method
US8425427B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2008 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Jan 8, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2560/0252
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pulse wave detection device detects pulse wave data from a pulse wave obtained from a user. The pulse wave detection device includes: a pulse wave detection unit detecting the pulse wave data from the pulse wave; a pulse wave derivative unit calculating velocity plethysmogram data by temporally deriving the pulse wave data; a component extraction unit extracting maximum and minimum values in a current first time range of the velocity plethysmogram data, while shifting the current first time range in a time axis direction, the extraction being repeated in a next current first time range; a component ratio calculation unit calculating a component ratio the maximum and minimum values extracted for each current first time range; and a noise segment determination unit determining, as a noise segment, a segment in which component ratios calculated by the component ratio calculation unit are temporally inconstant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.