Wireless Sensor Network for Monitoring Maturity Stage of Fruit
Wireless Sensor Network for Monitoring Maturity Stage of Fruit
复制标题
用于监测水果成熟度的无线传感器网络
DOI：
10.4236/wsn.2011.39034
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
A. Kanjanavapastit
中科院分区：
文献类型：
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作者：
M. Krairiksh;J. Varith;A. Kanjanavapastit
在这封信中，我们提出了一种用于监测水果成熟阶段的无线传感器网络。双偏振耦合贴片传感器能够耐受环境变化，设计工作频率为 2.45 GHz。它被附着在榴莲果实上几天，以测量主要与其果肉的淀粉浓度相对应的相互耦合的程度。信号从传感器节点通过树节点传输到主节点，显示该时段内发生的变化。最大互耦合发生在成熟度阶段 60%，最小互耦合发生在成熟度阶段 70%。这些结果表明，这种无线传感器网络可以使果农在适当的时间收获榴莲，为出口提供可靠的质量控制。
In this letter, we present a wireless sensor network for monitoring the maturity stage of fruit. A dual-polari- zation coupled patch sensor, which is robust to environmental changes, was designed to operate at 2.45 GHz. It was attached to a Durian fruit for a period of days to measure the magnitude of mutual coupling corresponding mainly to the starch concentration of its pulp. Signal was transmitted from a sensor node, via tree nodes, to a master node that displays the variations occurring in the period. The maximum mutual coupling occurred at the maturity stage of 60% whereas the minimum occurred at 70%. These results demonstrate that this wireless sensor network can enable fruit growers to harvest their Durians at an appropriate time, providing a reliable quality control for export.