養殖漁場之無線連續酸鹼檢測系統設計

The Design of Wireless Continuous Acid-Base Detection System for Farmed Fisheries

本文提出一個養殖漁場之無線連續酸鹼檢測系統設計，以做為漁場水質之酸鹼值檢測，透過紅外線遙控船與藍芽無線傳輸，可測得漁場中間位置之酸鹼值，並可達成長時間連續檢測之功能。 在系統實現方面，我們選用Silicon Labs EFM32 微處理器晶片做為整個系統的控制核心，並採用超極生技公司之酸鹼值檢測試片，將該試片檢測結果所回饋之電壓信號，經由EFM32之類比數位轉換器量測後，透過微處理器將結果傳送給無線藍芽模組，同時將此結果傳送到在漁場岸邊的電腦上。在感測器量測過程中，電腦端採用LabView開發之使用者介面，將酸鹼值之量測結果作圖，即時顯示pH值之結果。此外，為了能檢測漁場中間位置的水質，本論文還設計了一個可用紅外線遙控並浮於水面之載體，將整個檢測系統架構置於此載體上，來進行可在漁場中移動的酸鹼值連續檢測。 在驗證方面，我們使用商用酸鹼檢測儀、酸鹼值檢測試片、及我們所開發之檢測系統，來對不同酸鹼濃度之液體進行量測與驗證。實驗結果顯示本論文所設計之系統能與商用酸鹼檢測儀有相同之趨勢。 本文所提出之無線連續酸鹼檢測系統，可利用紅外線遙控器，將感測器移動至希望量測之位置，可不用進行檢體的取樣，直接測得待測物之酸鹼度。

 

In this paper, a wireless continuous acid-base detection system for aquaculture is proposed to detect the pH value of aquaculture’s water in the center position, by means of infrared remote-control vessel and Bluetooth wireless transmission. In the proposed system, we adopt the Silicon Labs EFM32 microprocessor to act as system control unit. This microprocessor will detect the voltage generated by the UltraE pH strip and transmit it to the Bluetooth module. Then, the Bluetooth module will transmit the measured pH value to the computer on the shore. Taking advantage of the LabView user interface for making a real-time pH plot, the computer will show the pH results. Moreover, we design an infrared remote-control vessel to place the proposed system for the pH value of aquaculture’s water in the center position detection, while the vessel is moving. In system verification, we adopt the commercial acid-base detector, the UltraE pH strip, and the proposed system to detect the pH value of different concentration solution for verification. Experimental results show that the proposed system has the same trend as the commercial acid-base detector. In conclusion, the proposed system can directly detect the pH value of aquaculture’s water in the expected position, by moving an infrared remote-control vessel to the desired place, without the need of actual sampling.