公开(公告)号：US20240164652A1

公开(公告)日：2024-05-23

申请号：US18284034

申请日：2022-03-14

Applicant: VALEO COMFORT AND DRIVING ASSISTANCE

Inventor： Nicolas Ringelstein ,  Frederic Autran

IPC: A61B5/024 ,  A61B5/00

CPC classification number: A61B5/02416 ,  A61B5/6893

Abstract: The monitoring system (1) comprises:



a light source (3),
an image acquisition device (5) comprising a shutter (11) which allows light to pass during a period (P1) when the source is active and during a period (P2) when the source is inactive, the light received by a sensor (9) comprising a component (Ca) due to ambient illumination and a component (Ci) due to the light source;
a processing unit (7) configured for determining a physiological parameter of the occupant by photoplethysmography.




The shutter (11) allows light to pass during a third period (P3), said light comprising the component (Ca) due to ambient illumination and the processing unit (7) being configured for subtracting this component (Ca) from the light received (9) during the other two periods for the purpose of isolating the component (Ci) due to the source in acquired images.

公开(公告)号：US20240040280A1

公开(公告)日：2024-02-01

申请号：US18268468

申请日：2021-12-16

Applicant: VALEO COMFORT AND DRIVING ASSISTANCE

Inventor： Frederic Autran

IPC: H04N25/77 ,  F21V8/00 ,  H04N25/78 ,  H04N25/11

CPC classification number: H04N25/77 ,  G02B6/0005 ,  H04N25/78 ,  H04N25/11

Abstract: 12. A lighting device comprising a lighting module including an optical output configured to emit a light beam having an angular spread is disclosed. The module has a light source configured to generate the light beam and an optical diffuser arranged to receive and diffuse the beam towards the optical output, such that the downstream value (θ2) is greater than the upstream value (θ1) of the angular spread. A control module emits a control signal having an alarm value when the value of the angular spread of the light beam emitted by the optical output passes below a first threshold, the control module comprising a photoreceptor optically coupled to the optical output and configured to measure a light intensity. The control module outputs the control signal having the alarm value when the value of the light intensity falls below a second threshold. A control circuit deactivates the light source upon reception of the control signal having the alarm value.