建構蝴蝶蘭栽培環境與介質含水率無線監控系統

Development of WLAN based microclimate monitoring and control system focusing on the moisture content of growth media for the culturing of Phalaenopsis

雷華德(Hua-De Lei)

指導教授 ： 方煒

國立臺灣大學/生物資源暨農學院/生物產業機電工程學研究所/碩士(2006年)

https://doi.org/10.6342/NTU.2006.02292

摘要

本研究使用兩型偵測介電常數的含水率感測器(EC-5, -10, Decagon Device , Inc., USA)建立蝴蝶蘭栽培介質的含水率訊號轉換公式，探討的介質包括三種不同顆粒大小的樹皮(Orchiata, Besgrow,New Zealand)與三種不同來源（紐西蘭、智利與中國大陸）的水苔。
含水率感測器與其他環境因子感測器連接於內建網路晶片的可程式化介面控制卡(PICNIC, Programmable Interface Controller with Network Interface Card)的數位輸入埠，結合無線基地台(AP, Access Point)，允許將感測訊號做無線傳輸。感測器、PICNIC與AP的組合以田間伺服器(Field server, FS)稱之，多台FS可構成無線感測格網(Wireless Sensor Grid)，其中只需一台與網際網路連接便可全部上網。
使用Visual Basic (Microsoft, USA)建立套裝軟體具備十大功能，包括：1. 內建多種溫、濕度與適用於不同感測器與不同介質的含水率訊號轉換公式，2. 允許與遠端具固定IP的PICNIC的溝通（包括設定、監測與控制），3. 允許對遠端具固定IP的PICNIC內部的各數位或類比通訊埠透過軟體做修改，類比可轉做數位通信，數位輸入與輸出更可彈性更改，4. 允許對遠端數位攝影機(IP Camera)的遙控（上、下、左、右擺動與縮放）與串流影音接收，5. 允許對近端Web Camera 影像的接收與錄影，6. 監測訊號藉由GSM簡訊資料庫定時傳達語音訊息及寄送監測數據訊息至指定的手機，7. 遠端以浮動IP監測的數據檔案允許以FTP方式定期傳輸至系統管理者，8. 以關聯性資料庫紀錄監測數據、資料庫允許存取、搜尋與繪圖，9. 資料庫內容允許轉檔成Excel 或ASCII 文字檔案格式，10. 提供即時精靈，做線上解說等。

關鍵字

蝴蝶蘭 ； 含水率 ； 樹皮 ； 水苔 ； 無線網路 ； 監控

並列摘要

Two models of moisture content sensor (EC-5, 10, Decagon Devices, Inc., USA), based on permittivity measurement, were used to monitor 3 types of barks (Orchiata, Besgrow, New Zealand) and 3 sources of sphagnum moss. Both types of growth media are commonly used in the Phalaenopsis production industry worldwide. Conversion equations from sensor output signal to moisture rate were established for different model and different growth media.
Sensor outputs of moisture content and temperature (T) and relative humidity (RH) were transferred through a programmable interface controller with network interface card (PICNIC), in conjunction with a wireless access point (AP). The combination of sensors, PICNIC and AP is termed Field Server (FS) which make the collection of field data through Internet possible. All FS can be wirelessly connected and a web based wireless sensor grid can be formed with the requirement of only one FS connected to the Internet physically.
The software developed, using Visual basic (Microsoft, USA), in this study consists of 10 major features: 1. conversion equations of several types of sensors were built into the software including T, RH, MR of different types of sensors to be used in different growth media. 2. PICNIC with fixed IP can be setup up, monitoring and controlled by any computer on the Internet. 3. I/O ports of PICNIC with fixed IP can be adjusted by any computer on the Internet. Analog input ports can be changed to digital out ports and all channels of digital I/O ports can be changed to either input or output ports. 4. Access to remote IP camera and capable of receiving streaming video, 270-degree range of pan, +90/-45 degree of tilt-up/down and 4x digital zoom in and out as well as 10x optical zoom in and out through Internet. Image capture and stored are also available. 5. Access to local web camera and capable of image capture and stored. 6. Monitoring sensor outputs can be transferred as a text and voice message to a selected mobile phone through GSM in a timely fashion or as a warning message when any defined unwanted situation occurred. 7. Sensor outputs of PICNIC with floating IP can be uploaded to the server site of the system manager at preset time interval through the FTP protocol. 8. Measuring data were stored in an ACCESS (Microsoft, USA) database and allow users to access/search/make figures. 9. Databases (monthly data per file) can be converted to Excel (Microsoft, USA) or ASCII data format. 10. Realtime genie with online help is provided when using the software.

並列關鍵字

Phalaenopsis ； Moisture content ； Bark ； Sphagnum moss ； WLAN ； Monitoring and control

參考文獻

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