Optocoupler Data Translation for Bandwidth-Limited Isolated Links
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Solution Overview
Problem
Optocouplers have a relatively slow switching speed, resulting in limited signaling bandwidth and lack signal transmission control or regulation, making them inadequate for applications requiring efficient data transmission, especially in hazardous environments.
Innovation Solution
A data translation system and method that performs non-linear data translation on digitized AC signals using a predetermined transfer function to compress or amplify digital values, preserving phase information and reducing signal bandwidth, while an optocoupler transmission system with a controller manages signal transmission through an optocoupler medium to prevent collisions and ensure reliable communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an optocoupler is used for electrical isolation, then safety and isolation are improved, but signaling bandwidth and switching speed deteriorate
Solution Approach 1:
The controller performs preliminary actions by detecting transmit attempts and managing transmission timing before actual data transmission occurs. This prevents collisions and ensures that the optocoupler is ready for transmission, optimizing its utilization without requiring faster switching speeds.
Solution Approach 2:
The system dynamically manages transmission by allowing multiple devices to share the optocoupler medium through controlled access. The controller adjusts transmission timing based on detected conditions, making the system adaptable to varying loads and maintaining reliable isolation while achieving effective data transmission.
2Reliability
If an optocoupler is used for electrical isolation, then safety is improved, but signal transmission control and regulation deteriorate
Solution Approach 1:
The controller implements feedback mechanisms by detecting transmit attempts from devices and using this information to regulate subsequent transmissions. This feedback loop enables the controller to manage the optocoupler medium effectively, providing signal transmission control despite the passive nature of the optocoupler itself.
Solution Approach 2:
The controller acts as an intermediary between the passive optocoupler and the active devices requiring communication. It manages the transmission medium, regulates signal flow, and coordinates multiple devices, thereby providing the control and regulation functions that the optocoupler alone cannot provide.
3Productivity
If multiple devices transmit simultaneously through an optocoupler, then communication capability is improved, but signal collisions and data integrity deteriorate
Solution Approach 1:
The controller performs preliminary detection of transmit attempts before allowing transmission. By identifying which devices wish to transmit and coordinating their access in advance, the system prevents simultaneous transmissions that would cause collisions, thereby maintaining data integrity while supporting multiple devices.
Solution Approach 2:
The system enables self-service communication where devices can indicate their transmission needs, and the controller autonomously manages the coordination. This self-organizing approach allows multiple devices to communicate effectively through the shared optocoupler medium without external intervention, maintaining both productivity and reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances data transmission efficiency by reducing signal bandwidth and maintaining phase information, while the optocoupler transmission system ensures reliable communication by preventing simultaneous transmissions and ensuring data integrity in hazardous environments.
Implementation Method 1
An optocoupler is a device that communicates signals from a first device to a second device using light
Data Source
AI summary
A data translation system (100) for performing a non-linear data translation on a digitized AC signal is provided. The non-linear data translation system (100) includes an input for receiving the digitized AC signal, an output for outputting a non-linearly translated signal, and a processing system (104) coupled to the input and to the output. The processing system (104) is configured to receive the digitized AC signal, non-linearly translate the digitized AC signal using a predetermined transfer function to create the non-linearly translated signal, and transfer the non-linearly translated signal to the output.