Abstract：To study the tracing technology of field test mobile reference vehicle speed meters based on optical sensor and GPS receiver respectively, simulated and field test of speed measurement experiments for both non-contact vehicle speed meter and GPS vehicle speed meter were performed and the results were compared. The calibration of non-contact automotive speed meter was performed with synchronous belt simulator. The calibration was performed on several speed values in the range of 10～180km/h. A GPS signal simulator system was used in simulated speed measurement error test for GPS automotive speed meter. The same speed values as that in the calibration of non-contact speed meters were tested. The field test performance of both reference speed meters was compared. The relative deviations in uniform motion fell in the range of ±0.3%. The relative deviations in acceleration and deceleration were much larger. The largest relative deviation fell in the range of ±8%, which was caused by the lagging effect of non-contact automotive speed meter. It is inferred that the performance of GPS automotive speed meter is better than that of non-contact automotive speed meter, when at least 6 satellites can be found by GPS automotive speed meter.
白银,孙桥,杜磊,于梅,白杰,曹进. 移动式机动车现场标准测速仪溯源技术的研究[J]. 计量学报, 2015, 36(1): 72-76.
BAI Yin,SUN Qiao,DU Lei,YU Mei,BAI Jie,CAO Jin. Study on Tracing Technique for Field Test Mobile Reference Vehicle Speed Meter. Acta Metrologica Sinica, 2015, 36(1): 72-76.
2015, Vol. 36 
