Title:
DROWSINESS CALCULATION DEVICE
Document Type and Number:
Japanese Patent JP2019093175
Kind Code:
A
Abstract:
To provide a drowsiness calculation device capable of highly accurately calculating a degree of drowsiness by taking account of peripheral environment.SOLUTION: A smartphone 1 causes: an I/F 18 to acquire a heart rate of a subject and a measurement time measured by a heartbeat sensor 19; a state discrimination part 11 to discriminate an activity state of the subject; and a GPS receiver 12 to acquire current location information of the smartphone 1, where the acquired information is transmitted to a server 2. The server 2 causes: an external communication part 23 to acquire meteorological information of the current location of the subject; and a correction part 24 to read a drowsiness criterion heart rate of the subject from a drowsiness criterion heart rate table 21 according to the activity state and current time, and correct it on the basis of the meteorological information. The corrected drowsiness criterion heart rate is transmitted to the smartphone 1. A drowsiness-degree calculation part 16 of the smartphone 1 calculates a degree of drowsiness of the subject on the basis of the corrected drowsiness criterion heart rate and the heart rate acquired by the I/F 18.SELECTED DRAWING: Figure 1
Inventors:
ARAI NORITAKA
MURATA TOSHIYUKI
YASUSHI MITSUO
MURATA TOSHIYUKI
YASUSHI MITSUO
Application Number:
JP2019018654A
Publication Date:
June 20, 2019
Filing Date:
February 05, 2019
Export Citation:
Assignee:
PIONEER ELECTRONIC CORP
International Classes:
A61B5/16; A61B5/18; G01C21/26; G08G1/16
Domestic Patent References:
| JP2005312653A | 2005-11-10 | |||
| JP2008188108A | 2008-08-21 | |||
| JPH06197890A | 1994-07-19 | |||
| JPH01250221A | 1989-10-05 | |||
| JP2011248746A | 2011-12-08 | |||
| JP2003061939A | 2003-03-04 | |||
| JP2004024704A | 2004-01-29 | |||
| JP2004344269A | 2004-12-09 |
Foreign References:
| US20080027337A1 | 2008-01-31 | |||
| WO2007111223A1 | 2007-10-04 |
Other References:
柳平雅俊 他: "眠気予測技術 Method for Predicting Drowsiness", JOURNAL OF SIGNAL PROCESSING, vol. 第11巻, JPN6019047062, September 2007 (2007-09-01), JP, pages 11 - 5, ISSN: 0004165246
Attorney, Agent or Firm:
Fumio Takino
Toshiaki Tsuda
Yasuhiro Fukuda
Toshiaki Tsuda
Yasuhiro Fukuda