DOI QR코드

DOI QR Code

건물 열 환경 쾌적 제어를 위한 이미지 인식 기반 착의량 산출 모델개발

Development an Image Recognition-based Clothing Estimation Model for Comfortable Building Thermal Controls

  • 투고 : 2021.12.08
  • 심사 : 2022.01.13
  • 발행 : 2022.01.30

초록

The purpose of this study is to develop an intelligent model that can estimate the clothing insulation (CLO) of occupants using real-time images. Also, performance and applicability of the model to the actual environment were analyzed through the experiment. A total of 16 individual garments and 9 clothing ensembles were set for the model development. The model was developed using the YOLOv5 network and trained on the collected clothing data. The classification performance of the developed model was denoted as 86.7% on average. The applicability of the model was evaluated using the real-time images of the subjects in the test-bed. As a result, the insulation value of the clothing ensembles can be accurately estimated with the MAE of 0.01 clo. This study confirmed the outstanding performance of the CLO estimation model and its high applicability to the actual indoor environment. Therefore, employing the CLO estimation model can contribute to improvement of occupant's thermal comfort, and it is expected to be applied to various systems capable of PMV-based control.

키워드

과제정보

이 논문은 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. 2019R1A2C1084145).

참고문헌

  1. ASHRAE, ANSI/ASHRAE Standard 55-2020, (2020). Thermal Environmental Conditions For Human Occupancy. Atlanta, GA.
  2. Choi, J. H., & Loftness, V. (2012). Investigation of human body skin temperatures as a bio-signal to indicate overall thermal sensations. Building and Environment, 58, 258-269. https://doi.org/10.1016/j.buildenv.2012.07.003
  3. Choi, E. J., Park, B. R., Choi, Y. J., & Moon, J. W. (2018). Development of a Human Pose Classifying Model to Estimate the Metabolic Rate of Occupant. Korea institute ecological architecture and environment, 18(5), 93-98.
  4. Choi, E. J., Yoo, Y., Park, B. R., Choi, Y. J., & Moon, J. W. (2020). Development of occupant pose classification model using deep neural network for personalized thermal conditioning. Energies, 13(1), 45. https://doi.org/10.3390/en13010045
  5. Choi, E. J., Cho, H. U., Cho, J. H., & Moon, J. W. (2020). Analysis of Indoor Thermal Comfort reflecting Dynamic Clothing Insulation in diverse Climate Zone. Korea institute ecological architecture and environment, 20(5), 171-177.
  6. de Carvalho, P. M., da Silva, M. G., & Ramos, J. E. (2013). Influence of weather and indoor climate on clothing of occupants in naturally ventilated school buildings. Building and environment, 59, 38-46. https://doi.org/10.1016/j.buildenv.2012.08.005
  7. Dziedzic, J., Yan, D., & Novakovic, V. (2018). Measurement of dynamic clothing factor (D-CLO). NTNU, Trondheim.
  8. Fanger, P. O. (1972). Thermal Comfort. McGraw-Hill. NY.
  9. Haldi, F., & Robinson, D. (2011). Modelling occupants' personal characteristics for thermal comfort prediction. International journal of biometeorology, 55(5), 681-694. https://doi.org/10.1007/s00484-010-0383-4
  10. ISO, ISO 9920:2007, (2007). Ergonomics of the thermal environment - Estimation of thermal insulation and water vapour resistance of a clothing ensemble.
  11. Jocher, G., Nishimura, K., Mineeva, T., Vilarino, R.: YOLOv5 (2020). https://github.com/ultralytics/yolov5.
  12. Kim, J., Zhou, Y., Schiavon, S., Raftery, P., & Brager, G. (2018). Personal comfort models: Predicting individuals' thermal preference using occupant heating and cooling behavior and machine learning. Building and Environment, 129, 96-106. https://doi.org/10.1016/j.buildenv.2017.12.011
  13. Lee, K. H., & Schiavon, S. (2014). Influence of three dynamic predictive clothing insulation models on building energy use, HVAC sizing and thermal comfort. Energies, 7(4), 1917-1934. https://doi.org/10.3390/en7041917
  14. Lee, J. H., Kim, Y. K., Kim, K. S., & Kim, S. (2016). Estimating clothing thermal insulation using an infrared camera. Sensors, 16(3), 341. https://doi.org/10.3390/s16030341
  15. Lee, J. H. (2016). Study on thermal comfort evaluation inside a passenger vehicle compartment using 3dimension image reconstruction. PhD thesis, Kaist.
  16. Lee, J. H., Kim, Y. K., Kim, K. S., & Kim, S. (2016). Estimating clothing thermal insulation using an infrared camera. Sensors, 16(3), 341. https://doi.org/10.3390/s16030341
  17. Lee, K. S., & Kim, T. Y. (2017). Evaluation of Clothing Insulation based on Tanabe Thermoregulation Model by Measuring Skin and Clothing Temperature. Architectural institute of korea, Conference papers, 37(2), 545-546.
  18. Lee, K., Choi, H., Kim, H., Kim, D. D., & Kim, T. (2020). Assessment of a real-time prediction method for high clothing thermal insulation using a thermoregulation model and an infrared camera. Atmosphere, 11(1), 106. https://doi.org/10.3390/atmos11010106
  19. LOTENS, W.A., & HAVENITH, G. (1995). Effects of moisture absorption in clothing on the human heat balance, Ergonomics, vol. 38, 1092-1113. https://doi.org/10.1080/00140139508925176
  20. MCCULLOUGH, E.A., JONES, B.W., & TAMURA, T. (1989). A database for determining the evaporative resistance of clothing, ASHRAE Transact. 95(2).
  21. Matsumoto, H., Iwai, Y., & Ishiguro, H. (2011). Estimation of Thermal Comfort by Measuring Clo Value without Contact. In MVA, 491-494.
  22. Ngarambe, J., Yun, G. Y., & Kim, G. (2019). Prediction of indoor clothing insulation levels: A deep learning approach. Energy and Buildings, 202, 109402. https://doi.org/10.1016/j.enbuild.2019.109402
  23. Schiavon, S., & Lee, K. H. (2012, December). Predictive clothing insulation model based on outdoor air and indoor operative temperatures. In Proceedings of 7th Windsor Conference: The changing context of comfort in an unpredictable world, 1(1), 1-14.
  24. Tham, K. W., & Willem, H. C. (2010). Room air temperature affects occupants' physiology, perceptions and mental alertness. Building and Environment, 45(1), 40-44. https://doi.org/10.1016/j.buildenv.2009.04.002
  25. Wyon, D. P. (2004). The effects of indoor air quality on performance and productivity. Indoor air, 14, 92-101. https://doi.org/10.1111/j.1600-0668.2004.00278.x
  26. Wang, Z., de Dear, R., Luo, M., Lin, B., He, Y., Ghahramani, A., & Zhu, Y. (2018). Individual difference in thermal comfort: A literature review. Building and Environment, 138, 181-193. https://doi.org/10.1016/j.buildenv.2018.04.040
  27. Wu, T., Cao, B., & Zhu, Y. (2018). A field study on thermal comfort and air-conditioning energy use in an office building in Guangzhou. Energy and Buildings, 168, 428-437. https://doi.org/10.1016/j.enbuild.2018.03.030
  28. Xie, J., Li, H., Li, C., Zhang, J., & Luo, M. (2020). Review on occupant-centric thermal comfort sensing, predicting, and controlling. Energy and Buildings, 110392. https://doi.org/10.1016/j.enbuild.2020.110392
  29. Zhang, F., De Dear, R., & Candido, C. (2016). Thermal comfort during temperature cycles induced by direct load control strategies of peak electricity demand management. Building and Environment, 103, 9-20. https://doi.org/10.1016/j.buildenv.2016.03.020