Seatbelt State Display Using Color Coded Vehicle Image
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Solution Overview
Problem
Conventional seatbelt fastening state display devices fail to clearly indicate whether a seat is occupied and if the seatbelt is fastened, making it difficult for drivers to determine if an occupant is present and wearing a seatbelt without visual verification.
Innovation Solution
A seatbelt fastening state display device that includes a seating detecting unit, a fastening detecting unit, and a display unit controlled by a microcomputer to display seatbelt states in different modes: unoccupied seats in gray, occupied but unfastened seats in red, and occupied and fastened seats in black within a vehicle image, allowing for visual identification of seatbelt states without changing posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a conventional warning display is used that only shows warnings when seatbelt is not fastened, then the display device is simple, but the driver cannot determine whether no occupant is in the seat or an occupant is in the seat with fastened seatbelt
Solution Approach 1:
The patent uses different colors to represent different seatbelt states: gray for unfastened seatbelts and black for fastened seatbelts. This color change principle allows the driver to distinguish between occupied and unoccupied seats, as well as between fastened and unfastened seatbelts, without adding complex display mechanisms. The color coding provides clear visual information while maintaining device simplicity.
Solution Approach 2:
The patent adds a visual dimension to the display by showing seatbelt state images at specific positions corresponding to each seat in the vehicle. This spatial arrangement allows the driver to understand both seat occupancy and seatbelt status simultaneously by observing where and how the images are displayed, providing comprehensive information without requiring additional complex components.
2Reliability
If the driver needs to watch the seat to verify occupant presence, then accurate information is obtained, but the driver's attention is diverted from driving
Solution Approach 1:
The patent introduces a display device as an intermediary between the seatbelt system and the driver. Instead of directly observing seats and seatbelts, the driver views processed visual information on the display unit. This intermediary provides accurate safety confirmation while allowing the driver to maintain focus on the road, as the display presents all necessary information in a consolidated, easy-to-interpret format.
Solution Approach 2:
The patent replaces the mechanical action of physically checking seats with an electronic display system. The display unit presents visual information about seat occupancy and seatbelt status, eliminating the need for the driver to physically turn around or visually inspect each seat. This substitution maintains reliable safety confirmation while significantly improving driver convenience and reducing distraction.
Data Source
AI summary
A microcomputer performs communication in conformity with the CAN standards to capture seating signals detected by seating sensors and seatbelt fastening signals by buckle switches. If determining from the captured seating signals that there is an unoccupied seat, the microcomputer displays a seatbelt state image at the unoccupied seat position in a vehicle image in gray presentation. If determining that there is an occupied and non-fastened seat, the microcomputer displays the seatbelt state image at the non-fastened seat position in the vehicle image in red presentation and displays the seatbelt state image at an occupied and fastened seat position in black presentation.