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In/Out Status Monitoring in Mobile Asset Tracking with Wireless Sensor Networks

机译:无线传感器网络跟踪移动资产中的输入/输出状态

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摘要

A mobile asset with a sensor node in a mobile asset tracking system moves around a monitoring area, leaves it, and then returns to the region repeatedly. The system monitors the in/out status of the mobile asset. Due to the continuous movement of the mobile asset, the system may generate an error for the in/out status of the mobile asset. When the mobile asset is inside the region, the system might determine that it is outside, or vice versa. In this paper, we propose a method to detect and correct the incorrect in/out status of the mobile asset. To solve this problem, our approach uses data about the connection state transition and the battery lifetime of the mobile node attached to the mobile asset. The connection state transition is used to classify the mobile node as normal or abnormal. The battery lifetime is used to predict a valid working period for the mobile node. We evaluate our method using real data generated by a medical asset tracking system. The experimental results show that our method, by using the estimated battery life time or by using the invalid connection state, can detect and correct most cases of incorrect in/out statuses generated by the conventional approach.
机译:移动资产跟踪系统中带有传感器节点的移动资产在监视区域中移动,离开监视区域,然后反复返回该区域。系统监视移动资产的输入/输出状态。由于移动资产的连续移动,系统可能会为移动资产的输入/输出状态生成错误。当移动资产在区域内时,系统可能会确定它在区域外,反之亦然。在本文中,我们提出了一种检测和纠正移动资产输入/输出状态不正确的方法。为了解决此问题,我们的方法使用有关连接状态转换和连接到移动资产的移动节点的电池寿命的数据。连接状态转换用于将移动节点分类为正常还是异常。电池寿命用于预测移动节点的有效工作时间。我们使用医疗资产跟踪系统生成的真实数据评估我们的方法。实验结果表明,我们的方法通过使用估计的电池寿命或使用无效的连接状态,可以检测和纠正大多数情况下通过常规方法生成的错误输入/输出状态。

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