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PI-based Transmission Power Control for WirelessHART Field Devices

机译：基于PI的无线传输功率控制现场设备

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Wireless networks are gaining space in industrial environments due to the low installation costs and low maintenance. Robustness is also one of the main requirements for these systems to be adopted, and, in this context, WirelessHART (WH), ISA SP100.11a, and WIA-PA protocols met these characteristics. In order to provide low maintenance, these protocols must provide reliable radio links while keeping low power consumption to allow battery powered devices. Unfortunately, the standards of these protocols do not impose any RF power modulation technique, which is a form to increase even more the battery endurance of a wireless field device. Instead, RF power levels are fixed and selected by commissioning, and must allow the longest link per device. In this case, devices in closer ranges waste energy during transmissions, as they could save energy by modulating the RF power. This paper presents a RF power modulation technique that employs a proportional-integral controller and allows reduction of energy consumption while keeping the robustness of RF links. A proof of concept of the power modulation technique is implemented and verified showing good results and proving that the proposed controller is feasible. The proposal has the advantage to be fully compatible with the standard.
机译：由于安装成本低，维护低，无线网络在工业环境中获得空间。鲁棒性也是这些系统所采用的主要要求之一，并且在此上下文中，WirelessHart（WH），ISA SP100.11a和WIA-PA协议符合这些特征。为了提供低维护，这些协议必须同时保持低功耗，以允许电池供电的设备提供可靠的无线电链路。遗憾的是，这些协议的标准不施加任何RF功率调制技术，这是一种增加甚至更多的无线现场设备的电池耐久性的形式。相反，RF功率电平由调试固定并选择，并且必须允许每个设备的最长链接。在这种情况下，更近的装置在传输期间的浪费能量范围，因为它们可以通过调制RF功率来节省能量。本文介绍了一种采用比例整体控制器的RF功率调制技术，并允许降低能耗，同时保持RF链路的稳健性。实施和验证了电力调制技术的概念证明，显示了良好的结果，并证明所提出的控制器是可行的。该提案具有与标准完全兼容的优势。

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