WirelessHART Gateway Addressing for Process Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The process control industry faces challenges in adopting wireless communication technology due to the need for reliable and secure networks, interference, and compatibility with existing wired systems, particularly in environments where signal loss can lead to catastrophic consequences.
Innovation Solution
A wireless network architecture that uses a shared addressing scheme with wired protocols, including a wireless gateway that supports the HART protocol, enabling seamless integration and operation of wireless devices with existing infrastructure, and employs a WirelessHART protocol for reliable and efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is adopted in process control, then ease of installation and flexibility are improved, but reliability and signal stability deteriorate due to potential interference and signal loss
Solution Approach 1:
The patent introduces a gateway as an intermediary device that bridges wireless HART devices with wired process control networks. The gateway receives wireless communications from field devices and translates them into wired protocol signals, ensuring reliable integration without direct wireless connections to the process control network, thereby maintaining signal stability while enabling wireless installation flexibility.
Solution Approach 2:
The patent replaces the mechanical wired connection system with a wireless communication system for field device connections, while maintaining wired infrastructure for the core process control network. This substitution allows flexible installation without physical wiring at field devices while preserving the reliability of the overall system through wired backbone infrastructure.
2Ease of operation
If wireless HART protocol is implemented, then ease of device connection is improved, but device complexity increases due to protocol integration requirements
Solution Approach 1:
The gateway is designed with multi-functionality to handle both wireless HART protocol communications and wired process control protocols simultaneously. This universal device can connect to various types of field devices wirelessly while integrating with existing wired infrastructure, simplifying the overall system architecture despite the complexity of protocol translation requirements.
Solution Approach 2:
The gateway serves as a protocol translation intermediary that handles the complexity of converting between wireless HART and wired protocols. By centralizing this translation function in the gateway, individual field devices maintain simplicity while still benefiting from easy wireless connection capabilities.
3Reliability
If dedicated wired HART lines are used, then signal reliability is maintained, but wiring requirements and installation complexity increase
Solution Approach 1:
The patent replaces the mechanical wiring system with wireless communication for field device connections, eliminating the need for dedicated wired HART lines at each field device. The gateway maintains wired connections to the process control network, preserving signal reliability while dramatically reducing wiring complexity at field locations.
Solution Approach 2:
The patent extracts the wireless communication function from the traditional wired HART architecture, allowing field devices to connect wirelessly while the gateway handles the wired infrastructure. This extraction eliminates unnecessary wiring at field devices while maintaining system reliability through the gateway's bridging capability.
4Adaptability or versatility
If wireless communication is used for critical process control, then flexibility and ease of deployment are improved, but security and interference vulnerability worsen
Solution Approach 1:
The gateway acts as a secure intermediary that isolates wireless field devices from the wired process control network. By translating and routing communications through the gateway, the system maintains flexibility of wireless deployment while protecting against interference and security vulnerabilities through the gateway's protocol translation and filtering capabilities.
Solution Approach 2:
The patent substitutes wireless communication for wired connections at field devices, providing flexibility in deployment locations and configurations. The gateway maintains wired connections to critical process control systems, creating a hybrid architecture that leverages wireless flexibility while preserving wired reliability and security for critical functions.
Data Source
AI summary
A method of providing a wireless extension to a wired protocol for transferring data to and from a field device operating in a process control environment via a wired connection, wherein the wired protocol and the wireless extension to the wired protocol have at least one protocol layer in common includes associating a unique address consistent with an addressing scheme of the wired protocol with each of a plurality of wireless devices operating in the process control environment and forming a wireless network, such that a data packet is routed between two of the plurality of wireless devices based on the unique address; associating a network identifier with the plurality of wireless devices; forming, for each of the plurality of wireless devices, a global address including the respective unique address and the network identifier in accordance with a second addressing scheme; and providing access to an external host operating outside the wireless network to each of the plurality of wireless devices based on the global address associated with the wireless device specified at the external host.