A step forward in the in-line river monitoring of nitrate by means of a wireless sensor network
A step forward in the in-line river monitoring of nitrate by means of a wireless sensor network
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DOI：
10.1016/j.snb.2014.01.039
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发表时间：
2014-05-01
影响因子：
8.4
通讯作者：
Peris, Miguel
中科院分区：
文献类型：
--
作者：
Capella, Juan V.;Bonastre, Alberto;Peris, Miguel
本文基于我们之前的工作，包括开发和部署无线传感器网络，用于连续在线监测西班牙东部河流中的硝酸盐含量。我们提出了新的贡献，显着增强了其适用性，改进了其功能，并提高了其可靠性和使用寿命。为此，开发了专家系统，以便以智能、灵活、用户友好的方式改进整个系统操作的功能。该专家系统提供了多种策略来优化执行（和发送）测量的时间，根据系统发展、用户偏好和应用程序功能改变采样频率。实施的政策如下： (a) 定期传输； (b) 梯度传输； (c) 用户请求和(d) 同行请求。此外，为了提高系统的可靠性，每个传感器中都采用了三重模块化冗余传感器，提高了系统的可靠性，同时对成本和消耗的影响非常小。在现场试验之前，已经进行了一些实验室实验以进行参数调整和检查。与之前的工作一样，所提出的系统已沿河流的某个河段部署，其运行正在接受研究和验证。 (C) 2014 年爱思唯尔作者。版权所有。
This paper is based on our previous work consisting of the development and deployment of a wireless sensor network for the continuous in-line monitoring of the content of nitrates in a river in Eastern Spain. We present new contributions that significantly enhance its applicability, improve its features, and increase its reliability and useful life.For this purpose, an expert system has been developed in order to improve the features of the whole system operation in an intelligent, flexible, user friendly way. This expert system offers several policies to optimize the times at which measurements are to be carried out (and sent), sampling frequency being altered according to the system evolution, the user preferences and the application features. The implemented policies are as follows: (a) periodic transmission; (b) gradient transmission; (c) user request and (d) peer request.Additionally, in order to increase the reliability of the system, a triple modular redundant transducer in each sensor has been implemented, increasing dependability of the system with a very small affection of cost and consumption. Prior to the field trials, some laboratory experiments have been performed for parameter adjustment and checking purposes. As in the previous work, the proposed system has been deployed along a certain stretch of the river, its operation being studied and validated. (C) 2014 Elsevier By. All rights reserved.