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US 12,496,997 B2Granted
System and method for adjusting pressing feeling by seat belt
AssigneesHyundai Motor Company, Kia Corporation
InventorsBaek Hee Lee, Kang Yen Lee, Soong Un Choi, Sang Ji Moon, Won Seok Lee
Life of this patent
Estimating the term…
Abstract
In a system and a method for adjusting seat belt pressure, in which while a passenger in a vehicle is wearing a seat belt, a webbing shape and pressure applied to a passenger's body by webbing can be detected, and webbing pressure adjustment drive devices can be operated based on the detected data so that local pressure applied to the passenger's body by webbing can be reduced, thereby relieving seat belt pressure. The system can include body pressure sensors, a camera, a controller, and various webbing pressure adjustment drive devices.
Claims20
A system for adjusting seat belt pressure, the system comprising:
- multiple markers attached at regular intervals on an outer surface of each of an upper webbing and a lower webbing;
- a body pressure sensor attached on an inner surface of each of the upper webbing and the lower webbing, the body pressure sensor configured to detect a body pressure applied to a passenger's body by each of the upper webbing and the lower webbing;
- a camera configured to photograph positions of at least some of the multiple markers, an upper webbing pull-out guiding D-ring, a buckle, and a lower webbing fixing body;
- a controller configured to determine whether the body pressure at a maximum protrusion point of each of the upper webbing and the lower webbing is greater than or equal to a reference pressure based on a captured signal of the camera and a detection signal of the body pressure sensor;
- and
- webbing pressure adjustment drive devices configured to be driven to relieve the body pressure to be less than the reference pressure based on a control signal of the controller in response to the body pressure at the maximum protrusion point being greater than or equal to the reference pressure, wherein the webbing pressure adjustment drive devices comprise:
- a buckle length and angle adjustment device configured to perform one of or both of moving up and down the buckle, and rotating the buckle in a width direction of a vehicle body;
- an upper webbing guide device configured to raise the upper webbing pulled out from the upper webbing pull-out guiding D-ring;
- a lower webbing position adjustment device configured to move the lower webbing fixing body up and down;
- and
- a retractor driving device configured to further pull out webbing wound inside a retractor by a selected length.
8 more elements
A method for adjusting seat belt pressure, the method comprising:
- photographing positions of multiple markers attached on each of an upper webbing and a lower webbing, an upper webbing pull-out guiding D-ring, a buckle, and a lower webbing fixing body by using a camera;
- detecting a body pressure applied to a passenger's body by each of the upper webbing and the lower webbing by a body pressure sensor attached on an inner surface of each of the upper webbing and the lower webbing;
- determining whether the body pressure at a maximum protrusion point of each of the upper webbing and the lower webbing is greater than or equal to a reference pressure based on a captured signal of the camera and a detection signal of the body pressure sensor;
- driving at least one of webbing pressure adjustment drive devices so that the body pressure at the maximum protrusion point is relieved to be less than the reference pressure in response to the body pressure at the maximum protrusion point being greater than or equal to the reference pressure;
- recognizing a webbing shape for determining longitudinal trajectory and shape of each of the upper webbing and the lower webbing based on the captured signal of the camera;
- determining a webbing maximum protrusion point for determining the maximum protrusion point of each of the upper webbing and the lower webbing based on the longitudinal trajectory and shape of each of the upper webbing and the lower webbing determined in the recognizing of the webbing shape;
- determining a maximum body pressure for determining a maximum pressure point of each of the upper webbing and the lower webbing applied to a passenger based on the detection signal of the body pressure sensor;
- comparing body pressure for determining whether the maximum protrusion point of each of the upper webbing and the lower webbing and the maximum pressure point of each of the upper webbing and the lower webbing correspond to each other;
- and
- commanding a drive control signal for relieving webbing pressure to at least one of the webbing pressure adjustment drive devices in response to the maximum protrusion point of each of the upper webbing and the lower webbing and the maximum pressure point of each of the upper webbing and the lower webbing corresponding to each other.
7 more elements
A method for adjusting seat belt pressure, the method comprising:
- selecting one of a no-pressure mode, a loose mode, and a tight mode as a seat belt wearing mode;
- and
- driving at least one of webbing pressure adjustment drive devices for relieving webbing pressure according to the selected seat belt wearing mode, wherein the webbing pressure adjustment drive devices comprise:
- a buckle length and angle adjustment device configured to perform one of or both of moving up and down a buckle, and rotating the buckle in a width direction of a vehicle body;
- an upper webbing guide device configured to raise the upper webbing pulled out from an upper webbing pull-out guiding D-ring;
- a lower webbing position adjustment device configured to move a lower webbing fixing body up and down;
- and
- a retractor driving device configured to further pull out webbing wound inside a retractor by a selected length.
5 more elements
Dependencies are inferred from the claim text.