DOI QR코드

DOI QR Code

Design and implementation of IoT based controllers and communication module interfaces for stand-alone solar system

  • 투고 : 2018.10.22
  • 심사 : 2018.12.07
  • 발행 : 2019.01.31

초록

This paper is part of research and development for stand-alone solar system without commercial power supply. It implements firmware of controller for operation of stand-alone solar system by applying IoT technology and also develops communication modules that allow multiple solar lamps to send and receive data through wireless network. The controller of the developed stand-alone solar system can effectively charge the power generated by the solar module, taking into account the battery's charge and discharge characteristics. It also has the advantage of attaching wireless communication modules to solar lamp posts to establish wireless communication networks without incurring communication costs. In addition, by establishing IoT gateway middleware platform for each installation site, it forms a foundation to operate multiple solar lamp posts into multiple clusters. And, it is expected that the data collected in each cluster will be used to enable configuration and control of operational information, thereby inducing convenience and efficiency of remote operation and management.

키워드

CPTSCQ_2019_v24n1_129_f0001.png 이미지

Fig. 1. IoT based monitoring and control system

CPTSCQ_2019_v24n1_129_f0002.png 이미지

Fig. 2. Controller and communication modules

CPTSCQ_2019_v24n1_129_f0003.png 이미지

Fig. 3. Flowchart of stand-alone solar lamp controller

CPTSCQ_2019_v24n1_129_f0004.png 이미지

Fig. 4. Operation flow diagram of IoT gateway

CPTSCQ_2019_v24n1_129_f0005.png 이미지

Fig. 5. Graph on the relationship between solar module voltage and battery charging voltage

CPTSCQ_2019_v24n1_129_f0006.png 이미지

Fig. 6. Graph on the relationship between solar module current and battery charging current

CPTSCQ_2019_v24n1_129_f0007.png 이미지

Fig. 7. Middleware class diagram for IoT gateway operation

CPTSCQ_2019_v24n1_129_f0008.png 이미지

Fig. 8. Screen of controller data received

CPTSCQ_2019_v24n1_129_f0009.png 이미지

Fig. 9. Screen of stored files(in case of TCP/IP communication connection failure)

Table 1. Development environment for IoT gateway middleware platform

CPTSCQ_2019_v24n1_129_t0001.png 이미지

참고문헌

  1. A. Jain, C. Nagarajan, "Efficient Control Algorithm for a Smart Solar Street Light," 2015 9th International Conference on Next Generation Mobile Applications, Services and Technologies, pp.376-381, 2015.
  2. M. F. Pinto, et. al., "Street Lighting System for Power Quality Monitoring and Energy-Efficient Illumination Control," 2016 IEEE 25th International Conference on Industrial Electronics, pp.34-39, 2016.
  3. C. J. Kim, et al., "Real-time Remote Monitoring System for Distributed Photovoltaic Systems," Journal of KIICE, 19(10), pp.2450-2456, 2015.
  4. M. Kim, et al., "Universal Interface for IoT Platform," Journal of KIPS, 7(1), pp.19-24, 2018.
  5. A. Al-Mutairi, "Designing and Implementation of Solar Street Lighting Management System Using Wide Area Network Technique," Journal of Babylon University/ Engineering Sciences, 24(1), pp.203-215, 2016.
  6. M. SU, et. al., "Design of the Wireless Monitoring System of Solar Lamps Based on ZigBee and GPRS," Power Engineering and Automation Conference, pp.1-4, 2012.
  7. B. W. Park, et al., "Development of Integrated Photovoltaic Monitoring System Using ZigBee Communication," Journal of KIIEE, 31(7), pp.56-62, 2017.
  8. S. Siregar, et. al., "Solar Panel and Battery Street Light Monitoring System Using GSM Wireless Communication System," 2014 2nd International Conference on Information and Communication Technology, pp.272-275, 2014.
  9. Xiaopu Wu, et. al., "Solar Street Lamp System Using GPRS and ZigBee Technology," 2016 IEEE 11th Conference on Industrial Electronics and Applications, pp.2561-2564, 2016.
  10. C. Lee, et. al., "Design and Implementation of a Universal Smart Energy Management Gateway based on the Internet of Things Platform," 2016 IEEE International Conference on Consumer Electronics, pp.67-68, 2016.
  11. J. J. Lee, et al., "IoT-based mobile smart solar power monitoring system," Journal of IEEK, 54(8), pp.55-64, 2017.
  12. M. H. Park, et al., "A Study on the Development of Energy IoT Platform," Journal of KIPS, 5(10), pp.311-318, 2016.