Low-Voltage Controller Dimming for Hospital Patient Control
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Solution Overview
Problem
Current low-voltage controllers (LVCs) in hospitals do not allow patients to adjust light levels, only providing on/off functionality for high-voltage loads like lamps, which limits patient control and comfort.
Innovation Solution
A low-voltage controller (LVC) configured to receive a low-voltage step signal from a momentary switch, enabling it to control high-voltage loads by setting intensity levels, including dimming capabilities, through a dimmer and microcontroller, allowing for multiple intensity levels and integration with existing hospital systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current LVCs provide only on/off functionality for lamps, then device complexity is reduced and ease of operation is improved, but patient control and comfort are limited
Solution Approach 1:
The controller transitions from static on/off control to dynamic multi-level dimming control, allowing the light output to be continuously adjusted through multiple intensity levels (e.g., 100%, 75%, 50%, 25%, 10% brightness) based on patient preferences and environmental conditions
Solution Approach 2:
The controller integrates multiple functions including on/off control, multi-level dimming, and integration with existing hospital systems (nurse call stations, pillow speakers), making it a universal control device that serves various patient needs within the hospital environment
2Adaptability or versatility
If LVCs integrate with existing hospital systems like nurse call stations, then adaptability is improved, but device complexity increases
Solution Approach 1:
The controller is designed to interface with multiple existing hospital systems including nurse call stations and pillow speakers, serving as a universal control hub that consolidates various control functions into a single device while maintaining compatibility with legacy hospital infrastructure
Solution Approach 2:
The controller merges control functions from different sources (nurse call station, pillow speaker, wall switches) into a unified control architecture, combining multiple control inputs and output functions into a single integrated unit that manages all lighting control needs
Data Source
AI summary
A low-voltage controller (LVC) is configured to utilize a low-voltage signal to operate a high-voltage load, such as, for example, a lamp. The LVC is configured to receive a low-voltage step signal at a switch input. The LVC has a line input for connection to a source of power at a line voltage and a load output for connection to a first load, and a dimmer for setting an intensity of the first load. Subsequent step signals may alter the intensity of the load. A method for low-voltage control of a load is provided. A method includes the steps of receiving a first switch signal at a switch input of an LVC; setting a lamp to a first intensity; receiving a second switch signal at the switch input; and setting the lamp to a second intensity.