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基于SPC的農產品冷鏈物流感知數(shù)據(jù)壓縮方法
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國家自然科學基金資助項目（71072153）,、中央高?；究蒲袠I(yè)務費專項資金資助項目(2010JS101)、上海市教委重點學科食品經濟管理資助項目（J50703）和中國農業(yè)大學研究生科研創(chuàng)新專項資助項目（KYCX2011067）


Sensing Data Compression Method Based on SPC for Agri-food Cold-chain Logistics
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    摘要:

    針對無線傳感器網(wǎng)絡實時監(jiān)控的農產品冷鏈物流環(huán)境中,，傳感器節(jié)點的感知數(shù)據(jù)傳輸頻率高,、能耗高和監(jiān)測時間短的問題,，提出基于統(tǒng)計過程控制（SPC）的感知數(shù)據(jù)壓縮方法，設計了適用于傳感器節(jié)點數(shù)據(jù)處理的動態(tài)-單值-滑動極差（D-X-RS）算法,。通過冷鏈物流環(huán)境試驗仿真,，對比了D-X-RS算法、閾值算法和K-滑動均值算法的數(shù)據(jù)壓縮性能,。結果表明,，D-X-RS算法數(shù)據(jù)的每數(shù)據(jù)點壓縮開銷（CCP）在溫度穩(wěn)定和波動狀態(tài)均與最優(yōu)方法所得結果接近，具有良好的平衡性和適應性,。

    Abstract:

    In order to reduce the sensing data transfer frequency and node energy consumption in real-time cold-chain logistics monitoring system for agri-food based on wireless sensor networks, a sensing data compression method based on statistics process control was presented. The D-X-RS algorithm that fits for the sensor nodes’ data processing capability was designed. The data compression performance of D-X-RS algorithm, threshold algorithm and K-means algorithm by cold-chain logistics environmental simulation in laboratory was compared. The result showed that the compression cost per point (CCP) of D-X-RS algorithm was close to the best algorithm both in temperature fluctuation and steady states. The algorithm had good balance and flexibility. 

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齊林,田東,張健,張小栓,傅澤田.基于SPC的農產品冷鏈物流感知數(shù)據(jù)壓縮方法[J].農業(yè)機械學報,2011,42(10):129-134. Qi Lin,Tian Dong, Zhang Jian, Zhang Xiaoshuan,Fu Zetian. Sensing Data Compression Method Based on SPC for Agri-food Cold-chain Logistics[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(10):129-134.

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