Lighting Control Tracking via Beacon Trilateration
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Solution Overview
Problem
Existing load control systems lack the capability to control lighting intensity, temperature, and natural light based on user location and mobile device, leading to suboptimal user experience.
Innovation Solution
A load control system that tracks the location of devices using beacon messages and determines their position through trilateration, enabling precise control of lighting, temperature, and natural light levels via a system controller and network device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a load control system uses traditional control devices without location tracking, then the system structure remains simple, but the system cannot control lighting and environmental conditions based on user location
Solution Approach 1:
Lighting control devices are made multi-functional by enabling them to both control lighting loads and track device locations through beacon message reception. This allows a single device type to serve dual purposes, reducing the need for separate location tracking infrastructure and minimizing system complexity while adding location-based control capability.
Solution Approach 2:
The system enables self-service location tracking by having lighting control devices autonomously receive and process beacon messages from tracked devices. Each lighting control device independently measures communication quality metrics and determines device locations without requiring centralized coordination, reducing system complexity while achieving location-based control.
2Measurement precision
If the system tracks device location using beacon messages from multiple lighting control devices, then location accuracy improves, but the quantity of communication data and processing requirements increase
Solution Approach 1:
The system uses communication quality metrics from multiple lighting control devices to track device location, employing partial information (communication quality metrics) from multiple sources rather than complete position data from each device. This approach achieves accurate location tracking while minimizing the quantity of communication data required.
3Ease of operation
If lighting control devices continuously receive and process beacon messages to track device location in real-time, then user experience improves, but energy consumption increases
Solution Approach 1:
The system implements periodic beacon message transmission and processing rather than continuous operation. Lighting control devices receive and process beacon messages at intervals, maintaining real-time location tracking capability while reducing energy consumption compared to continuous monitoring. This periodic action allows the system to balance responsiveness with energy efficiency.
Data Source
AI summary
A load control system for controlling a plurality of lighting loads located in a space may be configured to track the location of one or more tracked devices. The load control system may comprise a system controller, lighting control devices, e.g., for controlling a plurality of lighting loads, and tracked devices. The tracked devices may each transmit beacon messages. The lighting control devices may receive the beacon message. The lighting control devices may measure a communication quality metric of each of the beacon messages, and process the measured communication quality metrics received over a period of time to determine a processed communication quality metric for the tracked device. The lighting control devices may transmit tracking data to the system controller. The system controller may determine a location of the tracked device. For example, the system controller may determine the location of the tracked device via trilateration.