Controller with Dual Interfaces for Wireless Collision Detection
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Solution Overview
Problem
Home control systems with multiple loads using different communication protocols face interference issues and incompatibility, requiring separate controllers for each protocol, and often experience interference between wireless systems and mobile devices using adjacent frequency bands.
Innovation Solution
A controller with dual communication interfaces, one for mobile devices and another for loads, capable of detecting collisions and re-routing messages to prevent interference, and adjusting mobile device operation to minimize collisions, supports multiple protocols like Z-Wave, ZigBee, and KNX.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple wireless communication protocols are used to control different loads, then the system can support diverse loads with different protocols, but interference problems occur between the wireless systems and mobile devices using adjacent frequency bands
Solution Approach 1:
The patent introduces a gateway device as an intermediary between mobile devices and loads. The gateway translates communication protocols and manages frequency band usage, preventing direct interference between mobile devices and loads while maintaining protocol compatibility. The gateway acts as a mediator that converts messages between different protocols and manages collision detection.
Solution Approach 2:
The system segments communication into separate pathways: mobile devices communicate with the gateway using one protocol (e.g., Wi-Fi), and the gateway communicates with loads using another protocol (e.g., Z-Wave, Zigbee). This segmentation isolates interference sources and allows independent optimization of each communication channel.
2Reliability
If separate controllers are installed for each communication protocol, then each protocol can be managed independently without interference, but the device complexity and installation complexity increase
Solution Approach 1:
The patent merges multiple protocol handling capabilities into a single gateway device. The gateway integrates multiple communication interfaces and protocol stacks, consolidating what would otherwise require multiple separate controllers into one unified device. This reduces system complexity while maintaining protocol independence through virtual separation of communication channels.
Solution Approach 2:
The gateway is designed as a universal controller that can handle multiple communication protocols simultaneously. It provides multi-functionality by supporting diverse loads with different protocols through a single device, eliminating the need for protocol-specific controllers and simplifying the overall system architecture.
3Reliability
If collision detection is implemented to reduce interference, then the communication reliability improves, but the communication overhead and processing time increase
Solution Approach 1:
The gateway performs preliminary collision detection by monitoring the communication channel before transmitting messages. It checks for ongoing transmissions or interference conditions in advance, allowing it to defer or adjust transmissions proactively rather than reacting to collisions after they occur, thereby reducing retransmission overhead.
Solution Approach 2:
The system implements feedback mechanisms where the gateway monitors communication quality and adjusts its transmission strategy based on detected collision patterns. By continuously feedback on communication reliability metrics, the gateway can optimize transmission timing and protocols to minimize collision detection overhead while maintaining high reliability.
Data Source
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AI summary
Disclosed is a controller for controlling at least one load, and a method for operating the controller. The controller comprises: a wireless first communication interface, and at least one second communication interface, wherein the controller is configured to communicate with a mobile device through the first interface, and to communicate with at least one load through the at least one second interface, and wherein the controller is configured to detect a collision in the communication between the at least one load.