Vehicle Seat Movement Detection for Slope-Aware Pinch Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing seat state detection systems for vehicles struggle to accurately detect the state of the seat, particularly when the vehicle is on a slope, leading to difficulties in identifying when a foreign object is pinched during seat movement.
Innovation Solution
A seat state detection apparatus that includes a detecting unit to measure the moving status value of the seat's moving mechanism and a determining unit to differentiate between two states based on threshold values, allowing for accurate detection of seat movement and potential pinching of foreign objects even on slopes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the variation of the driving force is measured to detect foreign object pinching, then the detection method is simple, but the detection accuracy deteriorates when the vehicle is on a slope due to rearward load
Solution Approach 1:
The patent changes the detection parameter from driving force variation to moving status value (such as moving speed or position) of the seat. This parameter change allows accurate detection of foreign object pinching regardless of rearward load conditions, as the moving status directly reflects the seat's actual movement state rather than being influenced by gravitational forces on slopes.
2Device complexity
If a single threshold value is used for detection, then the detection logic is simple, but the reliability deteriorates when different operating conditions (flat vs. slope) are encountered
Solution Approach 1:
The patent introduces dynamic threshold values that adapt based on the detected moving status. Instead of using a fixed threshold, the system dynamically adjusts the threshold according to the seat's movement characteristics, enabling reliable detection across different operating conditions including slopes and flat surfaces.
Solution Approach 2:
The patent segments the detection range into multiple regions with different threshold values. By dividing the detection space and applying different thresholds to different segments (e.g., different moving status ranges), the system achieves both simplicity and reliability across varying operating conditions.
Data Source
AI summary
A seat state detection apparatus according to the present invention includes: a detecting unit configured to, in accordance with a moving operation in a front-rear direction by an operator on a seat of a vehicle, detect a moving status value representing a status of a moving mechanism that moves the seat in the front-rear direction; and a determining unit configured to determine that the moving mechanism is in a first state when the detected moving status value is more than a first threshold value, and determine that the moving mechanism is in a second state when the detected moving status value is less than a second threshold value set to a value lower than the first threshold value.