Wireless HVAC Occupancy Control Using WLAN Device Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing HVAC systems lack the ability to remotely control and adjust operational parameters based on occupancy, leading to inefficient energy usage and comfort levels within buildings.
Innovation Solution
An HVAC controller equipped with a wireless transceiver and memory that connects to a wireless local area network, detects mobile devices, and adjusts settings (like temperature) based on occupancy through queries and responses, enabling remote control and energy-efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If HVAC systems use traditional occupancy detection methods, then they can maintain basic comfort levels, but they cannot provide remote control capability and real-time occupancy-based adjustments
Solution Approach 1:
The HVAC controller is designed to perform multiple functions: traditional temperature control, occupancy detection via wireless network, and remote communication. By integrating these diverse functions into a single controller unit, the system achieves remote control capability without proportionally increasing overall system complexity
Solution Approach 2:
A wireless communication module serves as an intermediary between the HVAC controller and external devices (smartphones, tablets, computers). This intermediary enables remote control capability by transmitting commands and occupancy data through wireless networks, allowing users to control HVAC systems from distant locations without direct physical interaction
2Ease of operation
If HVAC systems continuously operate to maintain comfort, then comfort levels are maintained, but energy consumption increases
Solution Approach 1:
The system continuously monitors occupancy status through wireless network detection and uses this feedback to dynamically adjust HVAC operation. When occupancy is detected, the system activates to maintain comfort; when unoccupied, it reduces or stops operation. This feedback loop ensures comfort is maintained only when necessary, significantly reducing energy consumption
Solution Approach 2:
The HVAC system transitions from static continuous operation to dynamic operation based on real-time occupancy conditions. The controller automatically adjusts system state (on/off, heating/cooling intensity) according to detected occupancy, allowing the system to adapt its behavior to current conditions rather than operating continuously at fixed parameters
3Extent of automation
If HVAC systems detect occupancy using wireless network methods, then they can achieve automatic occupancy-based control, but they require integration with existing wireless infrastructure
Solution Approach 1:
The HVAC controller is designed to perform multiple functions: traditional temperature control, occupancy detection via wireless network, and remote communication. By integrating these diverse functions into a single controller unit, the system achieves remote control capability without proportionally increasing overall system complexity
Solution Approach 2:
The HVAC controller autonomously performs occupancy detection by monitoring the wireless network environment and automatically processes detected occupancy information to adjust system operation. This self-service capability enables automatic occupancy-based control without requiring manual intervention or complex external processing systems
Data Source
AI summary
An HVAC controller that can detect if a user's mobile wireless device is currently connected to and recognized by a building's wireless local area network is disclosed. Depending on whether or not the user's mobile wireless device is currently connected to and recognized by the building's wireless local area network, the HVAC controller basis its control on unoccupied or occupied settings.