Vehicle Seat Pressure Evaluation via Body Grid Segmentation
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Solution Overview
Problem
Drivers find it difficult to directly identify and evaluate body pressure distributions and posture states on vehicle seats due to adaptive changes in seat structures based on temporary pressure distributions.
Innovation Solution
An apparatus and method that analyze body pressure distribution by generating body grids, dividing them into areas, and evaluating pressure and hugging feeling based on measured data, using a body grid generator, pressure analyzer, and pressure evaluator to provide evaluation results on a display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If seat structures are adaptively changed according to regional pressure distributions, then driver comfort is improved, but drivers cannot directly identify the state of body pressure distributions and evaluation results
Solution Approach 1:
The patent introduces a camera as an intermediary device that captures images of the driver's body on the seat. The camera system acts as a mediator between the pressure distribution state and the driver's perception, translating physical pressure data into visual image data that can be directly observed and evaluated by the driver.
Solution Approach 2:
The patent employs color-coded visualization where different regions of the driver's body are represented by different colors corresponding to pressure levels. This color change mechanism allows drivers to intuitively understand pressure distribution states without requiring technical knowledge of pressure measurements, thus resolving the information visibility problem while maintaining comfort benefits.
2Stress or pressure
If seat structures are changed based on temporary pressure distributions, then regional pressure support is improved, but it becomes difficult to evaluate overall seat performance and driver posture
Solution Approach 1:
The patent divides the driver's body into multiple segmented regions (head, torso, limbs) and evaluates pressure distribution in each region separately. This segmentation allows for precise measurement of regional pressure support while also enabling comprehensive evaluation of overall seat performance by aggregating data from all segments.
Solution Approach 2:
The patent transitions from one-dimensional pressure sensor data to two-dimensional image data representation. By mapping pressure distribution onto visual images of the driver's body, the system adds a spatial dimension that enables both regional pressure evaluation and overall performance assessment simultaneously.
3Measurement precision
If body pressure data is collected and analyzed, then seat evaluation accuracy is improved, but system complexity increases
Solution Approach 1:
The patent creates a visual copy (image) of the driver's body on the seat that represents pressure distribution data. Instead of requiring drivers to interpret complex numerical pressure data, the system generates an accessible visual copy that maintains evaluation accuracy while significantly reducing system complexity and ease of use.
Data Source
AI summary
The present disclosure relates to an apparatus and a method for evaluating a seat by using body pressure distribution. The apparatus includes: a body grid generator to generate body grids corresponding to body pressure data, which is measured while a driver is seated on a seat of a vehicle, based on the body pressure data and body information of the driver; a pressure analyzer to divide the body grids to a plurality of body grid areas based on body areas of the body pressure data and analyze the body pressure data included in the body grid areas; and a pressure evaluator to evaluate a body pressure for the seat based on the analyzed body pressure data of the body grid areas, and evaluate a hugging feeling of the driver for the seat based on the evaluated body pressure.