Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Implementation of Water Depth Indicator using Contactless Smart Sensors

비접촉식 스마트센서 기반 수위측정 방법 구현

  • Kim, Minhwan (Department of ICT Convergence Engineering, Pusan National University) ;
  • Lee, Jinhee (School of Computer Science and Engineering, Pusan National University) ;
  • Song, Giltae (School of Computer Science and Engineering, Pusan National University)
  • Received : 2019.03.20
  • Accepted : 2019.04.08
  • Published : 2019.06.30
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Abstract

Water level measurement is highly demanding in IoT monitoring areas such as smart factory, smart farm, and smart fish farm. However, existing water level indicators are limited to be used in industrial fields as commercial products due to the high cost of sensors and the complexity of algorithms used. In order to solve these problems, our paper proposed methods using an infrared distance sensor as well as a hall sensor for the water level measurement, both of which are contactless smart sensors. Data errors caused by the inaccuracy of existing sensors were decreased by applying new simple structures so that versatility is enhanced. The performance of our method was validated using experiments based on simulations. We expect that our new water depth indicator can be extended to a general-purpose water level monitoring system based on IoT technology.

수위측정은 스마트 공장(Smart Factory), 스마트 농장(Smart Farm), 스마트 양식장(Smart Fish Farm) 등 IoT 모니터링 분야에서 활용도가 높다. 그러나 기존의 수위측정 방식은 복잡한 알고리즘과 고가의 센서 위주로 상품성과 산업현장 적용성이 떨어진다. 본 논문에서는 이러한 문제를 해결하고자 비접촉식 스마트센서인 적외선 거리 센서와 홀센서 기반 수위측정 방법을 각각 제안하였다. 센서의 고감도로 인해 발생하는 데이터 오류는 간단한 구조도입을 통해 해결함으로써 범용성을 높였다. 구현된 수위측정 방법은 성능평가 실험을 통해 그 유효성이 검증되었다. 본 연구를 통해 개발된 센서는 IoT 기술 기반 범용성 수위측정 모니터링 시스템으로 확장될 수 있을 것으로 기대한다.

Keywords

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Fig. 1 Structure of floating object

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Fig. 2 Measurement of Hall sensor output voltage change with distance

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Fig. 3 Multiple Hall sensor experiment

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Fig. 4 Multiple Hall sensor experiment result graph

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Fig. 5 Sensor data by water level

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Fig. 6 Reflector and guardrail concept map

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Fig. 7 Two type of guardrail and reflector(Black, White)

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Fig. 8 Measurement of sensor data

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Fig. 9 Experimental results according to the color of the reflector

Table. 1 IR infrared distance sensor specification

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References

  1. H. D. Jang, "Study on the Design Method of the Energy Harvesting Smart Sensor for Implementing IoT Service," Journal of Korea institute of information, electronics, and communication technology, vol. 11, no. 1, pp. 89-94, Feb. 2018. https://doi.org/10.17661/JKIIECT.2018.11.1.89
  2. E. J. Kim, S. J. Cho, and S. H. Sim, "A Recent Research Summary on Smart Sensors for Structural Health Monitoring," Journal of the Korea Institute for Structural Maintenance and Inspection, vol. 19, no. 3, pp. 10-21, May. 2015. https://doi.org/10.11112/JKSMI.2015.19.3.010
  3. M. Yoo, "Development of experimental water level measuring device using Arduino and an ultrasonic sensor," Journal of the institute of internet, broadcasting and communication, vol. 18, no. 4, pp. 143-147, Aug. 2018. https://doi.org/10.7236/JIIBC.2018.18.4.143
  4. O. H. Lee, "Experimental study on evaluating the performance of ultrasonic level measurement devices," M.S. dissertation, Kyugpook National University, 2015.
  5. B. C. Choi, and T. W. Kim, "Simultaneous Measurement of Liquid-level, Concentration and Temperature of a Urea Tank using Ultrasonic and Electrical Conductivity Sensors," Journal of the Korean Society for Power System Engineering, vol. 21, no. 5, pp. 71-78, Oct. 2017.
  6. S. W. Jang, and D. H. Jung, "Design and Implementation of a Distance Measurement System using Radar Sensor," Journal of the Korea Institute of Information and Communication Engineering, vol. 22, no. 7, pp. 1009-1014, July. 2018. https://doi.org/10.6109/JKIICE.2018.22.7.1009
  7. D. H. Jung, and S. W. Jang, "Distance measurement using radar sensor and standard deviation," Proceeding of the Korean Institute of Information and Communication Sciences Conference, vol. 22, no. 1, pp. 220-223, Jun. 2018.
  8. S. W. Jang, and D. H. Jung, "Design of a Distance Measuring System using a Radar Sensor and an Average Filter," International Conference on Future Information & Communication Engineering, vol. 10, no. 1, pp. 105-108, Jun. 2018.
  9. B. H. Han, H. J. Shin, and C. H. Oh, "Algorithm for Detection Direction of Single IF Scheme CW Radar Sensor," Journal of the Korea Institute of Information and Communication Engineering, vol. 19, no. 12, pp. 2905-2910, Dec. 2015. https://doi.org/10.6109/jkiice.2015.19.12.2905