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研究生:黃勇彰
研究生(外文):Yung-Chang Huang
論文名稱:網路平台影像化暴露監測應用於環境輻射監測
論文名稱(外文):Internet-based Video Exposure Technique for Ambient Radiation Monitoring
指導教授:賴永昌賴永昌引用關係
指導教授(外文):Yung-Chang Lai
學位類別:碩士
校院名稱:高雄醫學大學
系所名稱:職業安全衛生研究所碩士班
學門:醫藥衛生學門
學類:公共衛生學類
論文種類:學術論文
論文出版年:2005
畢業學年度:93
語文別:中文
論文頁數:90
中文關鍵詞:遠端監測Video Exposure Monitoring環境危害因子核子醫學
外文關鍵詞:nuclear medicinehazardous environmentVideo Exposure Monitoring (VEM)remote monitoring
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傳統上監測工作場所中所存在的危害因子時研究人員必須親臨現場,而且通常無法完整紀錄整個作業流程的實況畫面,Video Exposure Monitoring(VEM)方法具有整合現場畫面與監測資料之功能,本研究利用近年來新的軟硬體技術,改進VEM方法,並整合加入網路平台,達到工作場所監測作業能夠同步化、即時化、遠端化及回溯化之目標。

研究中利用CCD攝影機與視訊擷取卡記錄監測場所畫面,透過MPEG-4視訊格式壓縮後,使得視訊品質佳、視訊檔案更小。亦使用碘化鈉偵檢器量測輻射強度變化,透過單頻道分析儀等核子儀器模組轉換訊號,再配合研究中自行開發的訊號擷取傳輸裝置以及具備遠端監測功能的資料處理程式收集輻射計數值,並於核子醫學科候診區實地量測空間輻射與人員之變化狀況。

研究中監測程式的影像品質已能達到清晰可辨的水準,輻射計數資料透過監測程式整合後,在存取以及利用不同時間區隔計算輻射計數值皆相當便利,而且監測程式與單頻道分析儀所量得輻射計數值比較之後皆非常接近。伺服主機於接受遠端連線時,整體運作效率良好,初步已能完成遠端監測之目的。

監測系統即時視訊畫面的品質仍取決於攝影機優劣,雖然輻射偵檢器僅量測輻射計數值,但已足夠判斷空間中輻射的強弱變化,而遠端監測效率與網路頻寬息息相關,若遠端監測程式需要更流暢畫面與監測資料則必須提供足夠網路頻寬供其傳輸。
Traditionally, most investigators have to stay closely at a workplace to monitor environment data and only short-term exposure data could be recorded. For continuous monitoring environmental data with its real-time images, we have adopted a video exposure monitoring (VEM) technique in this ambient radiation research project. In this study, specific hardware and software are configured to incorporate into a PC-based platform to improve our VEM system’s remote sensing and networking capabilities through an internet-linkage. Recorded images and data are synchronized with ambient radiation levels of a Nuclear Medicine Department (NMD) and can be retrieved at a later time for analysis and archive.

A CCD camera and a video capture card are used to obtain the images in the workplace through MPEG-4 compression to make into a digital video file. Ambient radiation levels are monitored using a collimated NaI(Tl) detector to collect the average radiation count rates and are fused into a composite image display. The NaI(Tl) detector is converted and modified from a thyroid up-take probe into a NIM-based system including a Single Channel Analyzer(SCA) and a scaler/timer modules for local display.

As results from this study, time profiles of the recorded data have been plotted for the radiation levels of the NMD patients waiting area during normal business hours. We have also demonstrated the quality of images in our VEM system to be distinct and easy for observation. Through our written monitoring software program the radiation counting values can be calculated for any time-based intervals. Data acquisition system has been validated to close match to local SCA display in our applications.

In this study, the NaI(Tl) detector measures the radiation counting values that can truly reflect and show ambient radiation variances. A client-server connection is done easily and demonstrated that has met our goal of the remote monitoring purpose. Good grade of a camera and a broader bandwidth networking are recommended for further improvement of this VEM system to better remote sensing efficiency and image quality.
目錄 --------------------------------------------------------------------------------------- Ⅰ

圖表目錄 ---------------------------------------------------------------------------------- Ⅲ

中文摘要 --------------------------------------------------------------------------------- Ⅴ
英文摘要 --------------------------------------------------------------------------------- Ⅵ




壹、緒論 ----------------------------------------------------------------------------------
1.1 前言 ---------------------------------------------------------------------------
1.2 文獻探討 ---------------------------------------------------------------------
1.3 研究動機與目的 ------------------------------------------------------------

貳、材料與方法 -------------------------------------------------------------------------
2.1 研究材料 ---------------------------------------------------------------------
2.1.1 影像資料 -------------------------------------------------------------------
2.1.1.1 攝影機 --------------------------------------------------------------------
2.1.1.2 影像擷取與處理 --------------------------------------------------------
2.1.1.3 視訊畫面處理技術 -----------------------------------------------------
2.1.1.4 遠端視訊畫面處理 -----------------------------------------------------
2.1.2 環境輻射量測 -------------------------------------------------------------
2.1.2.1 輻射偵檢儀器 -----------------------------------------------------------
2.1.2.2 計數訊號處理 -----------------------------------------------------------
2.1.3 伺服器運作環境 ----------------------------------------------------------
2.1.3.1 電腦平台 -----------------------------------------------------------------
2.1.3.2 網路平台 -----------------------------------------------------------------
2.1.4 輻射計數資料處理與應用 ----------------------------------------------
2.1.4.1 輻射計數資料記錄與儲存 --------------------------------------------
2.1.4.2 輻射計數資料即時趨勢圖 --------------------------------------------
2.1.4.3 輻射計數資料遠端讀取 -----------------------------------------------
2.1.5 實驗評估場所 -------------------------------------------------------------
2.2 研究方法 ---------------------------------------------------------------------
2.2.1 計數讀取傳輸裝置計數擷取漏失率測試 ----------------------------
2.2.2 單頻道分析儀擷取轉換範圍設定 -------------------------------------


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參、結果 ----------------------------------------------------------------------------------
3.1 影像資料系統 ---------------------------------------------------------------
3.1.1 伺服器端 -------------------------------------------------------------------
3.1.2 遠方監看端 ----------------------------------------------------------------
3.2 輻射計數資料系統 ---------------------------------------------------------
3.2.1 伺服器端 -------------------------------------------------------------------
3.2.2 遠方監看端 ----------------------------------------------------------------
3.3 監測結果 ---------------------------------------------------------------------
3.3.1 現場監測畫面 -------------------------------------------------------------
3.3.2 監測現場之人員動向 ----------------------------------------------------
3.3.3 監測現場人員停留候診區時間 ----------------------------------------
3.3.4 監測現場輻射計數值 ----------------------------------------------------
3.4 監測場所人員輻射計量推估 ---------------------------------------------

肆、討論 ----------------------------------------------------------------------------------
4.1 視訊處理程式 ---------------------------------------------------------------
4.2 輻射計數程式 ---------------------------------------------------------------
4.3 網路遠端監控 ---------------------------------------------------------------
4.4 監測現場人員輻射暴露 ---------------------------------------------------

伍、結論 ----------------------------------------------------------------------------------
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參考文獻 ---------------------------------------------------------------------------------- 35

附錄 監測程式 ------------------------------------------------------------------------- 83
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17. Chang, E.C. Internet based remote camera control system. 1996 Intelligent Vehicles Symposium. Proceedings of the 1996 IEEE. 126-129, 1996

18. Chin-Hwa Kuo, Tay-Shen Wang. Design of networked visual monitoring systems. 2000 Proceedings ISCAS. Geneva. The 2000 IEEE International Symposium. Vol.4, 297-300, 2000

19. Lee, M.M., Chil-Woo Lee. Remote recordable security Web-based cameraserver system using index search algorithm. 2001 High Speed Intelligent Internet Symposium. Joint 4th IEEE International Conference. 250-252, 2001

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21. 范逸之. Visual Basic與數位輸出入介面卡控制. 文魁資訊股份有限公司. 2002年8月

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27. YC Huang, YC Lai, YW Chen, YH Huang. Non-occupational radiation exposure assessment at a nuclear medicine patient waiting area. Symposium on Industrial Hygiene. Taipei, April, 2002

28. Dual counter timer model 2071A user’s manual. Canberra

29. Hubert Novak. PIMEX-visualising risks at workplaces by video and monitoring. Closing Event of the European Week for Safety and Health at Work. Bilbao, Spain, November 2003

30. YC Lai, YC Huang, YW Chen, Video-assisted short-term radiation exposure assessment. The 48th Annual Meeting of the Health Physics Society. San Diego, California, July, 2003

31. Lionel S. Zuckier, Bryan Boardman. Internet base display of remotely acquired ambient radiation data. Journal of Health Physics. 82(6):898-901, 2002
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