Device and method for detecting a vital parameter
| Title: | Device and method for detecting a vital parameter |
|---|---|
| Patent Number: | 9,681,830 |
| Publication Date: | June 20, 2017 |
| Appl. No: | 13/081186 |
| Application Filed: | April 06, 2011 |
| Abstract: | A device for detecting a vital parameter is described, comprising: an optoelectronic sensor arrangement for detecting the vital parameter by means of light remission at a finger, wherein the optoelectronic sensor arrangement has a first light source for generating light in a visible wavelength range, a second light source for generating light in a non-visible wavelength range and a light-sensitive element; and a controller which is implemented to switch on the second light source in temporal intervals, execute an evaluation of the light received from the light-sensitive element in the invisible wavelength range of the second light source with respect to whether a finger is applied to the optoelectronic sensor arrangement and to switch on the first light source as soon as the evaluation indicates that a finger is applied to the optoelectronic sensor arrangement. |
| Inventors: | Couronne, Robert (Erlangen, DE); Ciancitto, Fabio (Erlangen, DE); Ershov, Sergey (Erlangen, DE); Weigand, Christian (Cadolzburg, DE); Gassmann, Hans-Josef (Meerbeck, DE); Haevescher, Rainer (Stemwede, DE) |
| Assignees: | Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. (Munich, DE), ZF Friedrichshafen AG (Friedrichshafen, DE) |
| Claim: | 1. A device for detecting a vital parameter, comprising: an optoelectronic sensor arrangement for detecting the vital parameter by means of light remission at a finger, wherein the optoelectronic sensor arrangement comprises a first light source for generating light in a visible wavelength range, a second light source for generating light in a non-visible wavelength range and a light sensitive element; and a controller which is implemented to switch on the second light source in temporal intervals, execute an evaluation of the light received from the light-sensitive element in the invisible wavelength range of the second light source with respect to whether a finger is applied to the optoelectronic sensor arrangement and to switch on the first light source as soon as the evaluation indicates that a finger is applied to the optoelectronic sensor arrangement; wherein the controller is implemented to execute an evaluation over a temporal course of the light received from the light sensitive element in the invisible wavelength range of the second light source to detect a pulse parameter when a finger is applied to the optoelectronic sensor arrangement and to switch on the first light source when a pulse wave is detected. |
| Claim: | 2. The device according to claim 1 , wherein the controller is implemented to switch off the first light source as soon as the evaluation indicates that no finger is applied to the optoelectronic sensor arrangement. |
| Claim: | 3. The device according to claim 1 , wherein the second light source and the light sensitive element are arranged so that the light received from the light-sensitive element is a portion of the light generated by the second light source remitted by the applied finger. |
| Claim: | 4. The device according to claim 1 , wherein the pulse parameter is a pulse wave, a pulse frequency or a pulse amplitude. |
| Claim: | 5. The device according to claim 1 , wherein the vital parameter is an oxygen saturation of the blood. |
| Claim: | 6. A method for detecting a vital parameter by means of an optoelectronic sensor arrangement for detecting the vital parameter by means of light remission, wherein the optoelectronic sensor arrangement comprises a first light source for generating light in the visible wavelength range, a second light source for generating light in a non-visible wavelength range and a light sensitive element, and wherein the method further comprises: switching on the second light source in temporal intervals; evaluating the light received from the light-sensitive element in the invisible wavelength range of the second light source with respect to whether a finger is applied to the optoelectronic sensor arrangement; and switching on the first light source as soon as the evaluation indicates that a finger is applied to the optoelectronic sensor arrangement; wherein an evaluation over a temporal course of the light received is executed from the light sensitive element in the invisible wavelength range of the second light source to detect a pulse parameter when a finger is applied to the optoelectronic sensor arrangement and to switch on the first light source when a pulse wave is detected. |
| Claim: | 7. The method according to claim 6 , comprising: switching off the first light source as soon as the evaluation indicates that no finger is applied to the optoelectronic sensor arrangement. |
| Patent References Cited: | 3911899 October 1975 Hattes 4122427 October 1978 Karsh 4773422 September 1988 Isaacson et al. 4967751 November 1990 Sterzer 5746697 May 1998 Swedlow et al. 5792052 August 1998 Isaacson et al. 5825293 October 1998 Ahmed et al. 6439333 August 2002 Domens et al. 6513164 February 2003 Hearns et al. 6697658 February 2004 Al-Ali 6832987 December 2004 David et al. 7499740 March 2009 Nordstrom et al. 7673354 March 2010 Fader 2003/0036685 February 2003 Goodman 2003/0208109 November 2003 David et al. 2004/0077937 April 2004 Yarden 2004/0133082 July 2004 Abraham-Fuchs et al. 2004/0245344 December 2004 Fischer et al. 2005/0084075 April 2005 Kotzin 2005/0239075 October 2005 Yanagidaira et al. 2006/0009685 January 2006 Finarov 2006/0058595 March 2006 Herrmann 2006/0250275 November 2006 Rodemer et al. 2008/0103702 May 2008 Ando et al. 2008/0243018 October 2008 Zuhars et al. 2009/0082989 March 2009 Zuhars et al. 2010/0240972 September 2010 Neal 2011/0218409 September 2011 Kugler et al. 2517184 August 2005 3723880 January 1989 29901849 May 1999 10249415 March 2004 10 2004 007253 June 2005 102004010554 September 2005 102005059687 June 2007 102006005664 August 2007 202006012071 October 2007 102008016286 October 2008 1632371 March 2006 1661511 May 2006 2390460 January 2004 2001-260698 September 2001 2001245871 September 2001 WO-9613208 May 1996 9835118 August 1998 WO-2005/009237 February 2005 |
| Other References: | Int'l Search Report, mailed Feb. 3, 2010, in related PCT application No. PCT/EP2009/006875, 12 pages. cited by applicant Hug, Rene; “Le pouls au volat . . . ”; Apr. 14, 2005; 2 pages (including translation). cited by applicant Mead, et al., “Pulmonary Ventilation Measured from Body Surface Movements”, Science, vol. 156, 1967, pp. 1383-1384. cited by applicant Jeong, in Cheol et al., “Development of Bio Signal Measurement System for Vehicles”, 2007 International Conference on Convergence Information Technology, IEEE, Piscataway, NJ, USA, Nov. 21, 2007 (Nov. 21, 2007), p. 1091-1096. cited by applicant |
| Primary Examiner: | Winakur, Eric |
| Attorney, Agent or Firm: | Perkins Coie LLP Glenn, Michael A. |
| Accession Number: | edspgr.09681830 |
| Database: | USPTO Patent Grants |
| Language: | English |
|---|