ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

基于GPRS的遠程檢測無線電子鼻系統(tǒng)
CSTR:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家自然科學基金資助項目(31370555)和“十二五”國家科技支撐計劃資助項目(2012BAD29B02)


Wireless Electronic Nose Based on GPRS and Its Application on Mangos
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問統(tǒng)計
  • |
  • 參考文獻
  • |
  • 相似文獻
  • |
  • 引證文獻
  • |
  • 資源附件
  • |
  • 文章評論
    摘要:

    針對移動環(huán)境的檢測需要,設計了一套基于GPRS的遠程檢測無線電子鼻系統(tǒng),,主要包括氣敏傳感陣列,、信號調(diào)理模塊、微處理器模塊,、GPRS模塊和遠程測控系統(tǒng)5部分,。對系統(tǒng)的遠程通信性能進行測試,發(fā)現(xiàn)電子鼻數(shù)據(jù)發(fā)送周期在400ms以上時,,系統(tǒng)的通信時延,、傳輸速率和累計丟包率都能滿足無線電子鼻檢測的要求;利用本系統(tǒng)對采摘后的芒果實施檢測研究,,得到的香氣響應特性曲線清晰,、穩(wěn)定;構(gòu)建芒果貯藏天數(shù)的預測模型,,結(jié)果發(fā)現(xiàn),,對照組逐步回歸模型雖然整體預測效果不理想,但對第4和6天的芒果仍有一定的預測效果,,而試驗組逐步回歸模型,、對照組基于線性判別的支持向量機(LDA—SVM)模型和試驗組LDA—SVM模型對芒果貯藏天數(shù)都具有較好的預測效果。

    Abstract:

    In order to meet the needs of quality detection of agricultural products during logistics, a wireless electronic nose (WEN) based on GPRS for applications in the “on-the-go” environment was designed. It consisted of 5 modules which were the sensor-array with 8 MOS sensors, signal processing module, master controlling module, GPRS module and remote monitoring system. The GPRS communication performance of the WEN was tested, it was found that when data transmission cycle exceeded 400ms, three communication performance indexes of GPRS network which were the time-lag between sending and receiving, packet loss during the transit and transmission rate would meet the demands of detection simultaneously. An application aimed at fresh mangos was taken by using the present WEN, and the obtained profiles of mango aroma were clear and stable. Mango storage prediction models were built with stepwise regression method (SR) and LDA—SVM, respectively, and it was indicated that the SR model of the control group mango had a certain predictive effect only for the mangos stored for 4 and 6 days, the SR model of the experimental group and the LDA—SVM model either of the control group or the experimental group achieved satisfactory predictive effect as a whole.

    參考文獻
    相似文獻
    引證文獻
引用本文

陳新偉,王俊,沈睿謙.基于GPRS的遠程檢測無線電子鼻系統(tǒng)[J].農(nóng)業(yè)機械學報,2015,46(4):238-245. Chen Xinwei, Wang Jun, Shen Ruiqian. Wireless Electronic Nose Based on GPRS and Its Application on Mangos[J]. Transactions of the Chinese Society for Agricultural Machinery,2015,46(4):238-245.

復制
分享
文章指標
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2014-06-19
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2015-04-10
  • 出版日期: 2015-04-10
文章二維碼