Rear occupant alert device and method therefor
AssigneeLG Innotek Co., Ltd.
InventorJae Yeon Choi
Life of this patent
Estimating the term…
Abstract
A rear occupant alert device according to an embodiment comprises a first object detection unit; a second object detection unit; and a control unit configured to control operations of the first and second object detection units, wherein the first object detection unit includes a passive infrared sensor (PIR) sensor, wherein the second object detection unit includes a radar module, and the control unit is configured to control a movement of an object inside a vehicle through the first object detection unit, and to control a movement of an object through the second object detection unit when the movement of the object is not detected through the first object detection unit.
Claims17
A rear occupant alert device comprising:
- a first object detection unit;
- a second object detection unit;
- and
- a control unit configured to control operations of the first and second object detection units,
- wherein the first object detection unit includes a passive infrared sensor (PIR) sensor,
- wherein the second object detection unit includes a radar module,
- wherein the control unit is configured to drive the first object detection unit when a signal notifying that a vehicle is turned off and a driver exits is received through an ECU of the vehicle, detect a movement of an object inside the vehicle according to the driving of the first object detection unit, drive the second object detection unit in response to non-detected movement of the object inside the vehicle through the first object detection unit, and re-detect a movement of the object inside the vehicle through the second object detection unit, and
- wherein the second object detection unit remains in an off state until the movement of the object inside the vehicle is not detected through the first object detection unit.
A method for alerting a rear occupant comprising:
- detecting that a vehicle is turned off and a driver exits;
- driving a passive infrared sensor (PIR) sensor based on a detection signal of the vehicle being turned off and the driver exiting;
- detecting a movement of an object inside the vehicle according to the driving of the PIR sensor;
- driving a radar module in response to non-detected movement of the object inside the vehicle through the PIR sensor;
- and
- re-detecting a movement of the object inside the vehicle through the driven radar module,
- wherein the radar module remains in an off state until the movement of the object inside the vehicle is not detected through the PIR sensor.
Dependencies are inferred from the claim text.