| Title |
An Analysis of Load Measurement Accuracy of EnBWIM System according to Vehicle Operation Characteristics |
| Authors |
방건혁(Bang, GeonHyeok );이재훈(Lee, JaeHoon);이유재(Lee, YuJae);서상구(Seo, SangGu);허광희(Heo, GwangHee) |
| DOI |
https://doi.org/10.12652/Ksce.2025.45.1.0043 |
| Keywords |
에너지 기반 BWIM; 차량 운행특성; 하중 측정 정확도; 실내 실험 |
| Abstract |
This study aims to analyze the load measurement accuracy of the EnBWIM(Energy Based Bridge Weigh In Motion) system based on the operational characteristics of vehicles. The operational characteristics of vehicles include load, speed, number of axles, and wheel material, but this study is limited to only vehicle load, speed and wheel material. For the analysis of the load measurement accuracy of the EnBWIM system, indoor experiments were conducted using a model bridge and model vehicles with loads of 2 kgf, 5 kgf, and 9 kgf. The results of the indoor experiments conducted under various vehicle operating conditions showed that the maximum error rate in load measurement by the EnBWIM system was 0.7 %, indicating high accuracy. The indoor experiments for speed variations increased the speed of the model vehicles from 0.2 m/s to 0.7 m/s in increments of 0.1 m/s, and the error in load measurement by the EnBWIM system decreased to as low as 0.03 % with increasing speed. Furthermore, the performance verification experiments of the EnBWIM system according to wheel material showed that the system had higher accuracy in measuring heavier vehicles as the wheel material was harder. Through the experiments verifying the load measurement performance of the EnBWIM system according to vehicle operating characteristics, it is determined that the EnBWIM system can accurately measure the load of moving vehicles with an error rate of less than 1 %. |