| Summary: | 碩士 === 國立臺灣大學 === 生物產業機電工程學研究所 === 95 === This study integrates a power spreader with the GPRS/GPS technology and establishes a remote monitoring system. The system can receive the operator’s moving tracks and the power spreader’s flow rate and also transmit these data to a remote monitoring station through GPRS immediately.
The entire experiment was divided into three stages: In the first stage, GPRS/GPS wireless positioning system was tested. Then the connection between an anemometer and a power spreader was done in the second stage. Finally, the wireless positioning system and the anemometer was integrated for a power spreader in the third stage.
The experimental results showed that no matter what methods of test (by foot or with bicycle) are used under different moving speeds or distances are, the GPS can receive signals quickly under a good weather condition .The maximum deviation is within 5 meters.
In addition, the fuel throttle on a power spreader has an important influence on the flow rate. The average velocity is 20.8 m/s and the minimum flow rate is approximately 0.053 m^3/s when the throttle level is 1, while the wind velocity is 77.35 m/s and the maximum flow rate is approximately 0.197 m^3/s when the throttle level is 5. This study has also set up a transmission for wireless positioning system. A remote monitoring system can receive signals from the coordinates of a power spreader and its corresponding flow rate in the spreader’s deliver pipeline output immediately. If a position of a spreader or the flow rate was not correct, the monitoring site can send a warning signal to the operator and caution the operator to correct his moving path or adjust the flow rate in time.
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