Institute of Computer Science, University of Silesia, Będzińska 39, 41-200 Sosnowiec, Poland.
Sensors (Basel). 2021 Oct 31;21(21):7256. doi: 10.3390/s21217256.
Wireless sensor networks have found many applications in detecting events such as security threats, natural hazards, or technical malfunctions. An essential requirement for event detection systems is the long lifetime of battery-powered sensor nodes. This paper introduces a new method for prolonging the wireless sensor network's lifetime by reducing data transmissions between neighboring sensor nodes that cooperate in event detection. The proposed method allows sensor nodes to decide whether they need to exchange sensor readings for correctly detecting events. The sensor node takes into account the detection algorithm and verifies whether its current sensor readings can impact the event detection performed by another node. The data are transmitted only when they are found to be necessary for event detection. The proposed method was implemented in a wireless sensor network to detect the instability of cargo boxes during transportation. Experimental evaluation confirmed that the proposed method significantly extends the network lifetime and ensures the accurate detection of events. It was also shown that the introduced method is more effective in reducing data transmissions than the state-of-the-art event-triggered transmission and dual prediction algorithms.
无线传感器网络在检测安全威胁、自然灾害或技术故障等事件方面有广泛的应用。事件检测系统的一个基本要求是延长电池供电的传感器节点的使用寿命。本文提出了一种新的方法，通过减少在协作进行事件检测的相邻传感器节点之间的数据传输，来延长无线传感器网络的寿命。所提出的方法允许传感器节点决定是否需要交换传感器读数以正确检测事件。传感器节点考虑检测算法，并验证其当前的传感器读数是否会影响另一个节点执行的事件检测。只有在发现数据对于事件检测是必要时才会传输数据。所提出的方法已在无线传感器网络中实现，以检测运输过程中货箱的不稳定性。实验评估证实，所提出的方法显著延长了网络的寿命，并确保了事件的准确检测。还表明，所引入的方法在减少数据传输方面比最先进的事件触发传输和双预测算法更有效。
