Building Occupancy Sensor Network with Dual-Mode Hub
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Solution Overview
Problem
Current communication networks in buildings become overwhelmed with multiple devices accessing the Internet, leading to inefficiencies and increased costs due to energy consumption, and lack the ability to identify occupants for intelligent building control.
Innovation Solution
A communication network with a hub device capable of operating in both short-range and long-range modes, using IEEE 802.15.4 or Bluetooth Low Energy for energy efficiency and occupancy tracking, combined with sensors for identity detection, enabling intelligent building management and secure installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple devices access the Internet through a single local network, then network coverage is extended, but network performance deteriorates due to increased traffic load and resource division
Solution Approach 1:
The patent segments the network into multiple hierarchical levels: a backbone network for long-range communication and multiple personal area networks (PANs) for short-range device connections. Each PAN acts as an independent segment that can manage its own traffic, reducing the burden on the main network and improving overall performance while maintaining extensive coverage.
2Ease of operation
If wireless networks are used to connect devices, then ease of connection is improved, but energy consumption increases significantly
Solution Approach 1:
The patent implements dynamic network mode selection where devices can switch between different communication modes (PAN mode for low-power short-range communication and full WiFi mode for high-bandwidth needs). The system dynamically adjusts the operational mode based on the specific requirements of each device and network condition, optimizing the balance between ease of connection and energy consumption.
3Extent of automation
If occupancy sensors are deployed to detect building occupants, then building control capability is improved, but the ability to identify specific occupants is lost
Solution Approach 1:
The patent makes the hub device multi-functional by integrating both occupancy detection and occupant identification capabilities. The hub can operate in different modes: detecting general occupancy for automated building control and identifying specific occupants through device recognition or RFID technology. This multi-functionality allows the system to provide both automated control and precise identification without requiring separate dedicated systems.
Data Source
AI summary
A system for detecting and identifying occupants of rooms in a building works with an application allowing configurable control and actuation of various controller and actuators around the building and easy configuration of short range communication devices.