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2021-01-11
Development of Humidity Monitoring System in Greenhouse with Electromagnetic X Band and Artificial Neural Networks
By
Progress In Electromagnetics Research M, Vol. 100, 93-103, 2021
Abstract
This paper presents a humidity monitoring system with X band electromagnetic transmission. The verification is performed by comparing the gain and phase difference of intermediate frequency between 10.2 GHz and 10.4 GHz. Measurement data are analyzed to classify relative humidity levels and make decisions with ANNs. The system is simulated with electromagnetic field simulation software to analyze the ability of humidity monitoring. The structure from the simulation is developed to be a prototype system, including transmitter and receiver modules. Each module consists of an antenna, a frequency synthesizer, and a frequency mixer. The different operation frequencies of the two modules are -200 MHz and +200 MHz. The obtained intermediate frequency by mixing signals from each module is introduced into the circuit to find the gain and phase difference to compare with a relative humidity level. Humidity monitoring experiment is set in a closed plastic box to control the environment. The relative humidity level is from 55% to 95%. The decrease in gain is associated with increased relative humidity. Results found that the phase difference decreases clearly at the relative humidity from 75% to 95%. Both gain and phase difference data are used to train ANNs to optimize ANNs structure. Data are divided into 50% for training and 50% for testing. The proposed ANNs structure with a learning rate of 0.05 provides 98.8% accuracy. The optimized ANNs structure is composed of two input nodes, eight hidden nodes, and four output nodes. The four output node represents the relative humidity in 11 levels. The simulated and experimental results show that the system is able to monitor humidity effectively for applying in the greenhouse.
Citation
Prapan Leekul, Pitchanun Wongsiritorn, and Pornpimon Chaisaeng, "Development of Humidity Monitoring System in Greenhouse with Electromagnetic X Band and Artificial Neural Networks," Progress In Electromagnetics Research M, Vol. 100, 93-103, 2021.
doi:10.2528/PIERM20112202
References

1. Harel, D., H. Fadida, A. Slepoy, S. Gantz, and K. Shilo, "The effect of mean daily temperature and relative humidity on pollen, fruit set and yield of tomato grown in commercial protected cultivation," Agronomy, Vol. 4, 167-177, 2014.
doi:10.3390/agronomy4010167

2. Vanhassel, P., P. Bleyaert, J. Van Lommel, I. Vandevelde, S. Crappé, N. Van Hese, J. Hanssens, K. Steppe, and M. C. Van Labeke, "Rise of nightly air humidity as a measure for tipburn prevention in 6 hydroponic cultivation of butterhead lettuce," International Symposium on Innovation and New Technologies in Protected Cropping, Brisbane, QLD, Australia, 2015.

3. Noiva, R. M., A. C. Menezes, and M. C. Peleteiro, "Influence of temperature and humidity manipulation on chicken embryonic development," BMC Veterinary Research, Vol. 10, No. 234, 2014.

4. Looi, Q. H. and A. R. Omar, "Swiftlets and edible bird's nest industry in Asia. Pertanika," Journal of Scholarly Research Reviews, Vol. 2, No. 1, 32-48, 2016.

5. Hassan, N., S. I. Abdullah, A. S. Noor, and M. Alam, "An automatic monitoring and control system inside greenhouse," 2015 3rd International Conference on Green Energy and Technology ICGET, 2015.

6. Heidari, M. and H. Khodadadi, "Climate control of an agricultural greenhouse by using fuzzy logic self-tuning PID approach," The 23rd International Conference on Automation & Computing, Huddersfield, UK, September 7-8, 2017.

7. Boonchieng, E., O. Chieochan, and A. Saokaew, "Smart farm: Applying the use of nodeMCU, IoT, NETPIE and LINE API for a Lingzhi mushroom farm in Thailand," IEICE Transactions on Communications, E101-B1, January 16-23, 2018.

8. Liang, M. H., Y. F. He, L. J. Chen, and S. F. Du, "Greenhouse environment dynamic monitoring system based on WIFI," International Federation of Automatic Control, 736-740, 2018.

9. Wang, L. and B. Wang, "Greenhouse microclimate environment adaptive control based on a wireless sensor network," International Journal of Agricultural and Biological Engineering, Vol. 13, No. 3, 64-69, 2020.
doi:10.25165/j.ijabe.20201303.5027

10. Leekul, P. and P. Chaisaeng, "The monopole antenna for automatic humidity control system applications in mushroom growing houses," Naresuan University Journal: Science and Technology, Vol. 26, No. 1, 118-127, 2018.

11. Pozar, D. M., Microwave Engineering, John Wiley & Sons, 2012.

12. Hasar, U. C., "Microwave method for thickness independent permittivity extraction of lowloss dielectric materials from transmission measurements," Progress In Electromagnetics Research, Vol. 110, 453-467, 2010.
doi:10.2528/PIER10101208

13. Komarov, V., S. Wang, and J. Tang, "Permittivity and measurements," Encyclopedia of RF and Microwave Engineering, John Wiley & Sons, 2005.

14. Lee, Y. C., C. M. Lin, S. H. Hung, C.-C. Su, and Y. H. Wang, "A broadband doubly balanced monolithic ring mixer with a compact intermediate frequency (IF) extraction," Progress In Electromagnetics Research Letters, Vol. 20, 175-184, 2011.
doi:10.2528/PIERL10120904

15. Emami, S., C. H. Doan, A. M. Niknejad, and R. W. Brodersen, "A 60 GHz down-converting CMOS single-gate mixer," IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, Long Beach, CA, USA, June 12-14, 2005.

16. Krcmar, M. and G. Boeck, "A broadband folded Gilbert cell CMOS mixer," Analog Integrated Circuits and Signal Processing, Vol. 64, No. 3, 39-44, 2010.
doi:10.1007/s10470-009-9358-y

17. Simrock, S. N., M. Hoffmann, F. Ludwig, M. K. Grecki, and T. Jezynski, "Considerations for the choice of the intermediate frequency and sampling rate for digital RF control," EPAC 2006, 1462-1464, Edinburgh, Scotland, 2006.

18. CST Studio Suite products for Academics, https://www.3ds.com/products-services/simulia/academia/?utm_source=cst.com&utm_medium=301&utm_campaign=academia.

19. Tanwar, A., K. K. Gupta, P. J. Singh, and Y. K. Vijay, "Dielectric parameters and ac. conductivity of pure and doped poly (methyl methacrylate) films at microwave frequencies," Bulletin of Materials Science, Vol. 29, No. 4, 397-401, 2006.
doi:10.1007/BF02704142

20. Gülmez, Y., T. Özkan, G. Gülmez, and E. Turhan, "A microwave system for humidity measurements," 2012 Conference on Precision Electromagnetic Measurements, 2012.

21. HB 100, https://www.limpkin.fr/public/HB100/HB100_Microwave_Sensor_Module_Datasheet.pdf.

22. SMA Male to SMA Male Cable Using RG316 Coax, https://www.pasternack.com/im-ages/ProductPDF/PE3573.pdf.