Power and control system for bed
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Solution Overview
Problem
Existing power-assisted bed systems face challenges in efficient power and signal distribution, particularly in safely managing high voltages and providing flexible control mechanisms for adjustable bed features like height and angular positions of head and foot springs.
Innovation Solution
A power and signal distribution assembly that converts high voltage AC input to low voltage DC output, using a pendant controller and buses to distribute power and control signals to motors and actuators, with overload protection and flexible, insulated wire assemblies for safe and configurable connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high voltage AC power is directly supplied to the bed frame, then sufficient power is available for motors and actuators, but safety hazards increase due to exposure to high voltages
Solution Approach 1:
A power conversion device is introduced as an intermediary between the AC power source and the bed frame. This device converts high voltage AC power to low voltage DC power, providing sufficient power for motors and actuators while isolating the bed frame from high voltage hazards. The converted low voltage power is then distributed through the bed frame to various components.
2Stability of the object's composition
If rigid wiring is used for power distribution, then structural stability is maintained, but flexibility and ease of configuration are reduced
Solution Approach 1:
The patent employs flexible insulated wire assemblies for power and signal distribution throughout the bed frame. These flexible wires maintain structural integrity while allowing easy routing and configuration to reach various motors, actuators, and control components. The flexibility enables adaptive positioning and simplifies installation and reconfiguration.
3Adaptability or versatility
If multiple separate control systems are used for different bed features, then functional versatility is achieved, but system complexity increases
Solution Approach 1:
The patent integrates multiple control functions into a unified control system. A central control device receives signals from a pendant controller and distributes appropriate control signals to various motors and actuators through the same flexible wire assembly that carries power. This merged approach provides versatile control of head elevation, foot elevation, and other bed features while simplifying the overall system architecture.
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
Enables safe and efficient control of bed features by isolating high voltages from the bed frame, providing flexible and lightweight power distribution, and ensuring reliable operation with overload protection, enhancing user safety and operational flexibility.
Implementation Method 1
A power and signal distribution assembly that converts high voltage AC input to low voltage DC output
Data Source
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AI summary
Embodiments of a power and signal distribution assembly for a bed having at least one power input port, at least one controller port, and at least one output port are described. The power input port receives a first DC voltage from a power supply and the power supply receiving an AC voltage and converting it to the first DC voltage. The controller port receives the first DC voltage and outputs at least one power control signal having the first DC voltage. The output port receives signals having the first DC voltage. The power and signal distribution assembly has a first location and the power supply has a second location different from the first location. In other embodiments, the power and signal distribution assembly is located on a frame of a bed and the power supply remote therefrom. Still further, one or more additional controller ports may also be provided.