DC Power Bus Layout for Motorized Window Treatment Charging

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Solution Overview

Problem

Existing window treatment systems require extensive labor and wiring costs for installation, and there is a risk of miswiring, which can lead to inefficiencies and safety issues.

Innovation Solution

A control system utilizing a direct-current (DC) power bus for charging internal energy storage elements in motorized window treatments, which reduces installation labor and wiring costs by using a daisy-chain configuration and minimizing the chance of miswiring.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional wiring methods are used for motorized window treatments, then reliable power distribution is achieved, but installation labor and wiring costs increase significantly

Engineering Contradiction:
Improvepower distribution reliabilityVSAvoidinstallation efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system divides the power distribution into segments by providing each motorized window treatment device with its own internal energy storage element (battery), allowing each device to be independently powered and installed without requiring continuous wiring throughout the building

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A DC power bus acts as an intermediary trickle charging system that slowly charges the internal energy storage elements of each device over time, providing supplemental power without requiring high-current wiring to each individual device

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If extensive wiring is used to connect all motorized window treatments, then power supply is ensured, but installation complexity and miswiring risk increase

Engineering Contradiction:
Improvepower supply reliabilityVSAvoidwiring complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Each motorized window treatment device is segmented as an independent unit with its own internal energy storage element, eliminating the need for complex continuous wiring networks while maintaining power supply reliability through the simplified DC power bus connection

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The DC power bus serves multiple functions simultaneously: it provides a common charging pathway for all devices, establishes a simple daisy-chain communication backbone, and reduces wiring requirements while maintaining system-wide power distribution

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

The DC power bus system significantly reduces installation costs and minimizes the risk of wiring errors, ensuring efficient and reliable operation of motorized window treatments.

Implementation Method 1

A control system may include a direct-current (DC) power bus for charging (e.g., trickle charging) internal energy storage elements in control devices of the control system

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS12237672B2Direct-current power distribution in a control system
Publication Date: 2025.02.25 LUTRON TECHNOLOGY COMPANY LLC
  • US12237672B2 patent drawing
  • US12237672B2 patent drawing
  • US12237672B2 patent drawing

AI summary

A control system may include a direct-current (DC) power bus for charging (e.g., trickle charging) internal energy storage elements in control devices of the control system. For example, the control devices may be motorized window treatments configured to adjust a position of a covering material to control the amount of daylight entering a space. The system may include a DC power supply that may generate a DC voltage on the DC power bus. For example, the DC power bus may extend from the DC power supply around the perimeter of a floor of the building and may be connected to all of the motorized window treatments on the floor (e.g., in a daisy-chain configuration). Wiring the DC power bus in such a manner may dramatically reduce the installation labor and wiring costs of an installation, as well as decreasing the chance of a miswire.