Night-light and alert system
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Solution Overview
Problem
Elderly or infirm individuals face hazards when rising from bed in dim conditions due to the difficulty in accessing and operating remote light sources, and existing solutions are complex, expensive, or prone to accidental activation.
Innovation Solution
A wireless night light system comprising a mat with a weight sensor and microcomputer that automatically turns on a remote light unit when stepped on, using Bluetooth and GSM signals to control lighting and notify caregivers of the individual's status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light is placed away from the bed, then the light can be positioned out of the way and cast light into the room, but the individual must make his or her way to the light and operate the switch, which presents hazards for elderly or infirm individuals
Solution Approach 1:
The patent replaces the mechanical system of physically reaching and operating a light switch with an automatic sensor-based system. Weight sensors detect when the individual has left the bed and automatically activate the light, eliminating the need for manual operation. This resolves the contradiction by maintaining good lighting coverage while removing the operational difficulty and safety hazards associated with reaching for switches in the dark.
Solution Approach 2:
The lighting system serves itself by automatically detecting the user's presence and activating without manual intervention. The weight sensors on the bed mattress detect when the individual rises, and the system automatically turns on the appropriate lights, eliminating the need for the user to manually operate switches. This self-service approach resolves the contradiction between lighting coverage and ease of operation.
2Ease of operation
If the light is placed close to the bed, then the individual can access it more easily, but the individual must turn his or her body or reach uncomfortably, and there is risk of knocking over the lamp
Solution Approach 1:
The patent eliminates the need for physical interaction with the light fixture by using automatic weight sensors and wireless communication. The system detects when the user needs light and activates the fixture remotely, removing the risk of knocking over lamps while maintaining easy access. This resolves the contradiction by providing ease of operation through automation rather than proximity.
Solution Approach 2:
The patent introduces wireless signals and sensors as intermediaries between the user and the light fixture. Instead of direct physical contact, the system uses weight detection and wireless communication to activate lights, eliminating the risk of knocking over lamps while maintaining convenient control. This intermediary approach resolves the contradiction between accessibility and safety.
3Extent of automation
If a mat operating as a switch is used, then the light is automatically lit when stepped on, but there are problems with sure operation, accidental activation, and requiring to step on the mat again to turn off the light
Solution Approach 1:
The patent uses weight sensors that provide feedback about the user's presence and actions. The system monitors weight changes continuously and uses this feedback to determine when to activate or deactivate lights, preventing accidental activation and ensuring reliable operation. The feedback mechanism distinguishes between intentional actions (user getting out of bed) and unintentional ones, resolving the reliability issues with simple mat switches.
Solution Approach 2:
The patent uses multiple parameters (weight threshold, duration of weight presence, rate of change) to determine when to activate lights, rather than relying on a single simple trigger. This multi-parameter approach filters out false activations from minor weight changes while reliably detecting intentional actions, and automatically turns off lights when the user returns to bed, resolving both activation reliability and automatic turn-off requirements.
4Ease of operation
If specially-equipped beds with lights wired into the bed are used, then the individual can access lights from the bed, but such technology can be quite complex and expensive
Solution Approach 1:
The patent extracts the lighting control function from the bed itself and places it in separate, simpler components. Weight sensors are placed on the mattress surface rather than wired into the bed structure, and light control is handled by separate control units that communicate wirelessly. This extraction reduces bed complexity while maintaining ease of operation, resolving the contradiction between accessibility and system complexity.
Solution Approach 2:
The patent creates a universal lighting control system that can work with any bed type without requiring specialized bed construction. The weight sensors and control units are standalone components that can be applied to existing beds, providing multiple functions (detection, control, communication) through modular components rather than complex integrated bed systems, resolving the complexity issue while maintaining ease of operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides safe and convenient lighting assistance while minimizing the risk of accidents and ensuring accurate activation, with features like automatic turn-off and notification of the individual's status to caregivers.
Implementation Method 1
The partition can have an uncompressed thickness which corresponds to an uncompressed oscillation frequency value. A microcomputer is electronically connected to and adapted to monitor the oscillation frequency of the LC circuit
Implementation Method 2
a mat having a pair of metallized polyester layers separated by a compressible partition and connected to an inductance to form an LC circuit having an oscillation frequency dependent on the distance between the metallized polyester layers
Data Source
AI summary
Among other things, a system for lighting a light for an individual rising from a bed is provided. In particular embodiments, the system can include a mat and a light unit wirelessly connected, so that when an individual steps on the mat as he or she rises from the bed a signal is sent to the light unit, activating the light. A weight sensor in the mat can measure the weight placed on the mat, so that unintentional lighting can be avoided and so that weight information can be recorded. Embodiments can also include a signal transmitter to send weight and activation information to a remote receiver.