HVAC Gateway Mailbox Storage for Latency Reduction
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Solution Overview
Problem
Existing HVAC communication systems face latency issues and synchronization challenges when accessing and managing data across multiple systems, which affects user experience and efficiency in remote access and control.
Innovation Solution
Implementing a mailbox data storage mechanism within a gateway device that acts as a citizen of the HVAC environment, allowing for regular data collection and local storage, reducing latency by responding to external access requests immediately and automatically updating changes, while also enabling remote configuration and asynchronous reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gateway device forwards commands and responses between HVAC systems and external systems in real-time, then communication reliability is maintained, but access latency increases and user experience deteriorates
Solution Approach 1:
The gateway device proactively collects HVAC system information at regular intervals and stores it in a local mailbox before external access requests arrive. This preliminary data preparation eliminates waiting time when external systems need information, as the data is already available locally rather than requiring real-time retrieval from HVAC devices.
Solution Approach 2:
The gateway introduces a local mailbox as an intermediary data storage layer between HVAC systems and external systems. This mailbox caches HVAC information locally, allowing the gateway to respond to external access requests immediately from its local copy without directly querying HVAC devices in real-time, thus reducing latency while maintaining data availability.
2Measurement precision
If a gateway device maintains real-time synchronization with multiple HVAC systems, then data accuracy is improved, but system complexity and communication traffic increase
Solution Approach 1:
The gateway performs selective data synchronization by collecting only specific HVAC information parameters that are relevant to external access needs, rather than synchronizing all possible data. This partial synchronization approach maintains data accuracy for critical parameters while reducing overall system complexity and communication overhead.
Solution Approach 2:
The gateway collects HVAC information at regular periodic intervals rather than continuously monitoring all systems. This periodic collection strategy maintains data freshness and accuracy for the most recent readings while significantly reducing communication traffic and processing complexity compared to continuous real-time synchronization.
3Speed
If a gateway device collects and stores HVAC information regularly locally, then access speed is improved, but device memory requirements and data management complexity increase
Solution Approach 1:
The gateway extracts and stores only the essential HVAC information parameters that are most frequently accessed by external systems, rather than caching all possible data. This selective extraction approach improves access speed for critical data while minimizing memory consumption and simplifying data management by focusing on high-priority information only.
Solution Approach 2:
The gateway creates local copies of HVAC information in its mailbox for rapid access, but maintains these as simplified replicas rather than full duplicates of the original HVAC data structures. This copying approach enables fast local retrieval while keeping the mailbox data structure simple and manageable, avoiding the complexity of maintaining complete data fidelity.
Data Source
AI summary
A mailbox data storage mechanism for a remote device in a heating, ventilation and air conditioning environment. The mechanism, as a part of a gateway device and acting as a citizen of the heating, ventilation and air conditioning environment, may collect system information regularly and maintain a copy of the latest data locally which can be a response to external access requests in time at any moment. The mechanism may limit the latency for external access and improve user experience. The mechanism may help satisfy multiple interfaces.