Browse > Article
http://dx.doi.org/10.12652/Ksce.2018.38.2.0227

Measurement of Rainfall using Sensor Signal Generated from Vehicle Rain Sensor  

Kim, Young Gon (Kangwon National University)
Lee, Suk Ho (Kangwon National University)
Kim, Byung Sik (Kangwon National University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.38, no.2, 2018 , pp. 227-235 More about this Journal
Abstract
In this study, we developed a relational formula for observing high - resolution rainfall using vehicle rain sensor. The vehicle rain sensor consists of eight channels. Each channel generates a sensor signal by detecting the amount of rainfall on the windshield of the vehicle when rainfall occurs. The higher the rainfall, the lower the sensor signal is. Using these characteristics of the sensor signal generated by the rain sensor, we developed a relational expression. In order to generate specific rainfall, an artificial rainfall generator was constructed and the change of the sensor signal according to the variation of the rainfall amount in the artificial rainfall generator was analyzed. Among them, the optimal sensor channel which reflects various rainfall amounts through the sensitivity analysis was selected. The sensor signal was generated in 5 minutes using the selected channel and the representative values of the generated 5 - minute sensor signals were set as the average, 25th, 50th, and 75th quartiles. The calculated rainfall values were applied to the actual rainfall data using the constructed relational equation and the calculated rainfall amount was compared with the rainfall values observed at the rainfall station. Although the reliability of the relational expression was somewhat lower than that of the data of the verification result data, it was judged that the experimental data of the residual range was insufficient. The rainfall value was calculated by applying the developed relation to the actual rainfall, and compared with the rainfall value generated by the ground rainfall observation instrument observed at the same time to verify the reliability. As a result, the rain sensor showed a fine rainfall of less than 0.5 mm And the average observation error was 0.36mm.
Keywords
Rainfall rate; Rain sensor; Artificial rainfall generator; Sensor signal;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Haberlandt, U. and Sester, M. (2010). "Areal rainfall estimation using moving cars as rain gauges a modelling study." Hydrol. Earth Syst, Vol. 14, pp. 1139-2010.   DOI
2 Kim, B. S., Kim, H. S. and Yang, D. M. (2010). "Comparison of spatial distributions of rainfall derived from rain gages and a radar." Korean Wetlands Society, Vol. 12, No. 3, pp. 63-73 (in Korean).
3 Kim, B. S., Kim, Y. G. and Lee, S. H. (2017). "Development of rainfall information manufacturing technology by using signal of a vehicle rainfall sensor." Advanced Science and Technology Letters, Vol. 141, pp. 133-138.
4 Lee, S. H., Kim, Y. G. and Kim, B. S. (2017). "Develoment of rainfall information production technolohy using the optical signal of wundshield rain sensors." An International Interdisciplinary Journal, Vol. 20, No. 6(B), pp. 4521-4533.
5 Lee, S. H., Kim, Y. G. and Kim, B. S. (2017). "Development of relationship equation for vehicle sensor signal and observed rainfall." Journal Korean Water Resour Assoc, Vol. 49, No. 1, pp. 29-35 (in Korean).