US 10,376,207 B2
Calculating a current circadian rhythm of a person
Xavier Louis Marie Antoine Aubert, Brussels (BE); Henning Maass, Waalre (NL); and Guido Josef Muesch, Erkelenz (DE)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 15/36,160
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Dec. 1, 2014, PCT No. PCT/EP2014/076061
§ 371(c)(1), (2) Date May 12, 2016,
PCT Pub. No. WO2015/082382, PCT Pub. Date Jun. 11, 2015.
Claims priority of application No. 13195320 (EP), filed on Dec. 2, 2013.
Prior Publication US 2017/0007178 A1, Jan. 12, 2017
Int. Cl. G06F 19/00 (2018.01); A61B 5/00 (2006.01); A61B 5/0205 (2006.01); A61B 5/11 (2006.01); G16H 50/50 (2018.01); A61B 5/021 (2006.01); A61B 5/024 (2006.01)
CPC A61B 5/4857 (2013.01) [A61B 5/02055 (2013.01); A61B 5/1118 (2013.01); A61B 5/4809 (2013.01); A61B 5/681 (2013.01); A61B 5/7225 (2013.01); A61B 5/7264 (2013.01); G06F 19/00 (2013.01); G16H 50/50 (2018.01); A61B 5/021 (2013.01); A61B 5/024 (2013.01); A61B 2560/0242 (2013.01); A61B 2562/0219 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An apparatus for generating a model output at a first time describing a circadian rhythm of a person, said apparatus comprising:
(a) an input module configured to:
receive an activity signal and/or a lighting level signal, the activity signal being (i) indicative of a current level of activity of the person at the first time and (ii) based on activity level measurements, the lighting level signal being indicative of a lighting level at the first time at a location of the person;
(b) a classification module configured to:
(1) receive a threshold of the person;
compare the threshold of the person to a weighted sum of recent activity signals and/or recent lighting level signals, the recent activity signals corresponding to activity signals taken prior in time to the first time, and the recent lighting level signals corresponding to lighting level signals taken prior in time to the first time; and
(2) generate a wakefulness signal at the first time based on the comparison, the wakefulness signal being indicative of the person being awake or asleep at the first time;
(c) a first calculation module configured to determine a non-photic driving term at the first time based on the wakefulness signal, the non-photic driving term representing a non-photic influence on the circadian rhythm; and
(d) a simulation module configured to calculate in real time the current model output at the first time based on the non-photic driving term.