Multi-Protocol Wireless Sensor Network with PLC Protocol Mediation
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Solution Overview
Problem
Industrial process control and automation systems face challenges in integrating multiple wireless communication protocols, leading to complexity and inefficiency in wireless connectivity between field devices and controllers.
Innovation Solution
A system and method for integrating an IEC 61131-3 environment with multi-protocol wireless sensor networks, utilizing a PLC platform that supports native protocols like ISA100/WirelessHART, with features such as TDMA segregation, auto-discovery, and integrated wireless management to enable seamless communication across different protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple wireless connection methods are used to support different field devices, then compatibility with various protocols is improved, but system complexity increases
Solution Approach 1:
The patent introduces a protocol translation layer or gateway that acts as an intermediary between field devices using different wireless protocols and the control system. This mediator translates messages between protocols, enabling compatibility without requiring the control system to support multiple protocols natively, thus maintaining system simplicity while achieving protocol versatility.
Solution Approach 2:
The control system is designed with a universal communication interface that can handle multiple wireless protocols through a unified architecture. The system incorporates multi-functional communication modules that can adapt to different protocols (WirelessHART, ISA100.11a, LoRaWAN, NB-IoT) within a single device, reducing the need for separate specialized hardware for each protocol.
2Adaptability or versatility
If protocol translation or gateway devices are added to enable multi-protocol communication, then protocol compatibility is improved, but device complexity increases
Solution Approach 1:
The patent merges the protocol translation functionality directly into the control system's communication module rather than using separate external gateways. By combining multiple protocol handling capabilities and translation functions within a single integrated device, the system achieves protocol compatibility without adding separate gateway devices, thus reducing overall system complexity.
3Ease of operation
If wireless communication is implemented in industrial control systems, then ease of installation and flexibility are improved, but reliability may be compromised compared to wired connections
Solution Approach 1:
The patent implements redundancy mechanisms in the wireless communication system, including backup communication paths and error correction protocols, to compensate for potential wireless connection failures before they occur. This cushioning approach ensures that if one wireless connection fails, the system can switch to alternative paths, maintaining reliability while preserving the installation ease of wireless technology.
Data Source
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AI summary
A multi-protocol wireless sensor network (300) is provided. The multi-protocol wireless sensor network includes a first field device (335), a second field device (325), an access point (315), and a programmable logic controller (PLC) (305). The first field device is configured to operate using a first protocol. The second field device is configured to operate using a second protocol. The access point is configured to communicate with the first field device using the first protocol and the second field device using the second protocol. The PLC is configured to control the first field device and the second field device through the access point.