Dual Bus Hazard Management System for Alarm and Data Transmission
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Solution Overview
Problem
Hazard management systems face challenges in providing both reliability and high bandwidth for data transmission, especially in industrial environments where firmware updates and video/audio streaming are required without compromising system responsiveness or increasing power consumption.
Innovation Solution
A combination of a field bus and a broadband bus is implemented, where the field bus ensures reliable alarm signaling and unit connectivity, while the broadband bus handles video streaming, firmware updates, and audio, with the ability to switch between activated and idle modes, activated by alarm signals or periodic triggers, and optimized for power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single communications bus is used for both alarm signaling and data transmission, then device complexity is reduced, but reliability of alarm signaling deteriorates due to bandwidth contention
Solution Approach 1:
The communications bus is segmented into two separate buses: a field bus dedicated to alarm signaling and safety-critical data, and a broadband bus for high-bandwidth data transmission such as video streaming and firmware updates. This segmentation eliminates bandwidth contention and ensures that alarm signaling reliability is not compromised by data transmission demands.
2Productivity
If the communications bus operates continuously at high bandwidth, then data transmission capability is improved, but power consumption increases
Solution Approach 1:
The broadband bus operates dynamically, switching between active and idle states based on data transmission requirements. The system activates the broadband bus only when high-bandwidth communication is needed (such as during video streaming or firmware updates) and deactivates it during normal operation, thereby reducing power consumption while maintaining data transmission capability when required.
Solution Approach 2:
The broadband bus is activated periodically or on-demand rather than continuously, allowing the system to balance between data transmission needs and power consumption. This periodic activation ensures that high bandwidth is available when necessary while minimizing energy usage during normal operational periods.
3Adaptability or versatility
If firmware updates are transmitted through the alarm signaling bus, then device versatility is improved, but reliability of hazard management deteriorates due to bus overload
Solution Approach 1:
Firmware update functionality is segregated to the broadband bus, while the field bus remains dedicated to alarm signaling and safety-critical communications. This segmentation allows firmware updates to be transmitted without overloading the alarm signaling bus, ensuring that hazard management responsiveness and reliability are not compromised by update operations.
Data Source
AI summary
A hazard management system is provided with a field bus and a broadband bus. The field bus is configured to connect at least two units of the hazard management system for sending alarm signals among the units of a hazard management system. The broadband bus, which is separate from the field bus, is configured to connect at least two units of a hazard management system, so that these units may exchange data through the broadband bus. The broadband bus is configured to stream audio and/or video data from one unit to other units or to deploy software updates among the units of the hazard management system.