Automated Bed Side Rail Control via Motion Detection
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Solution Overview
Problem
Users may forget to raise the side rail on a bed, leading to a risk of falling off, and existing lock mechanisms can be difficult to unlock, posing challenges in preventing accidental falls.
Innovation Solution
A bed system equipped with a bed main body, side rails, a driving unit, a first detector (such as an AI camera) to detect user motion, and a controller that automatically operates the side rails between positions to prevent falls, either by raising them when the user is present or lowering them when the user departs, using a lock mechanism to manage the side rail's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lock mechanism is used to fix the side rail, then the side rail can be securely positioned, but it becomes difficult to unlock the lock mechanism from the bed
Solution Approach 1:
The patent introduces a controller as an intermediary device that receives detection signals from the detection unit and automatically controls the driving unit to adjust the side rail position. This intermediary system eliminates the need for manual lock mechanism operation from the bed, resolving the accessibility issue while maintaining secure positioning through automated control.
Solution Approach 2:
The patent replaces the manual mechanical lock mechanism with an automated electro-mechanical system consisting of a driving unit, controller, and detection unit. This substitution eliminates the need for physical access to unlock mechanisms, as the system automatically adjusts side rail positions based on detected user presence or absence.
2Ease of operation
If the side rail is manually adjusted by the user, then the user can control the side rail position, but the user may forget to raise the side rail when using the bed
Solution Approach 1:
The patent implements a self-service system where the detection unit automatically detects user presence or absence and the controller autonomously controls the driving unit to adjust the side rail position. This eliminates reliance on user memory or manual operation, ensuring the side rail is automatically in the correct position without user intervention.
Solution Approach 2:
The patent introduces a feedback loop where the detection unit continuously monitors user presence and provides signals to the controller, which then adjusts the side rail position accordingly. This closed-loop feedback system ensures the side rail is reliably positioned based on real-time detection of user conditions.
3Reliability
If the side rail is automatically adjusted based on user motion detection, then the side rail position is maintained reliably, but the system complexity increases
Solution Approach 1:
The patent designs the controller to perform multiple functions: receiving detection signals, processing user presence information, controlling the driving unit, and managing the lock mechanism. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in system complexity while achieving reliable automated side rail positioning.
Data Source
AI summary
A bed system includes: a bed main body; a side rail provided on the bed main body; a driving unit configured to drive the side rail; a first detector configured to detect a motion of a user on the bed main body; and a controller configured to control the driving unit based on the motion of the user detected by the first detector.