저비용 고효율의 IoT 기반의 부력식 레벨센서 설계
Design of IoT-based Buoyancy-based Level Sensors for Low-cost and High-efficiency
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
This study developed a buoyancy-based level sensor composed of a buoyant object, a sensing unit, and a signal generation unit tomeet the demand of low-cost, high-efficiency inundation-detection sensors. The volume of the submerged buoyant object remainednearly constant even in the presence of water-level fluctuations, allowing stable water-level data acquisition. The measurement resolutionand measurement repeatability were confirmed to be within 0.4 mm and 0.3%, respectively. LoRa-based communication was used toimplement the IoT-based inundation-detection sensor. The measurement deviation between the sensors is approximately 0.15%. Theunresponsive level at which measurement was not possible was confirmed to be approximately 2 mm. Excluding this unresponsiverange, the water level measurements exhibited very high linearity, allowing precise measurements. Furthermore, a test bed was established in an inundation-vulnerable area using buoyancy-based level sensors.
Abstract
This study developed a buoyancy-based level sensor composed of a buoyant object, a sensing unit, and a signal generation unit tomeet the demand of low-cost, high-efficiency inundation-detection sensors. The volume of the submerged buoyant object remainednearly constant even in the presence of water-level fluctuations, allowing stable water-level data acquisition. The measurement resolutionand measurement repeatability were confirmed to be within 0.4 mm and 0.3%, respectively. LoRa-based communication was used toimplement the IoT-based inundation-detection sensor. The measurement deviation between the sensors is approximately 0.15%. Theunresponsive level at which measurement was not possible was confirmed to be approximately 2 mm. Excluding this unresponsiverange, the water level measurements exhibited very high linearity, allowing precise measurements. Furthermore, a test bed was established in an inundation-vulnerable area using buoyancy-based level sensors.
참고문헌 (8)
- B. K. Park, "Development of Ultrasonic Sediment-level Sensor for Sewage Pipe Application", J. Sens. Sci. Technol., 30(1), pp.25~29 (2021)
- H. Golnabi, "Design and performance of a cylindrical capacitive sensor to monitor the electrical properties", J. Appl. Sci., 8(9), pp.1699~1705 (2008)
- H. Golnabi, "Design and operation of a fiber optic sensor for liquid level detection", Opt. Laser. Eng., 41, pp.801~812 (2004)
- E. Vargas, "Ultrasonic sensor for liquid-level inspection in bottles", Sens. Actuators A Phys., 61(1-3), pp.256~259 (1997)
- A. Kulkarni, "Liquid Level Sensor", Rev. Sci. Instrum., 76(10), pp.105108~105113 (2005)
- M. E. Loverude, "Helping Students Develop an Understanding of Archimedes’ Principle. I. Research on Student Understanding", Am. J. Phys., 71(11), pp.1178~1187 (2003)
- P. R. L. Heron, "Helping Students Develop an Understanding of Archimedes’ Principle. II. Development of Research- Based Instructional Materials", Am. J. Phys., 71, pp.1188~1195 (2003)
- M. Cattani, "An Experimental Evaluation of the Reliability of LoRa Long-Range Low-Power Wireless Communication", J. Sens. Acuatator Netw., 6(2), pp.1~19 (2017)