关键词: 交通运输工程, 数据采集器, 布设, 光学成像, 全程监控, 公路线形

Abstract: The intelligent monitoring data collector of highway is always laid out according to the experience，which is easy to cause the omission，deviation of monitoring area or the waste of the quantity cost of the collector.In view of the present situation，based on the principle of camera imaging and the pixel requirements of the monitoring identification，the whole course monitoring model under the horizontal curve section，the longitudinal curve section as well as the horizontal and longitudinal combination curve section of the highway was established respectively，with the combination of the linear characteristic parameters of the road.And the calculation formulas of the spacing，horizontal angle and dip angle of the data collector under 3 different alignments were deduced.The optimal layout of data collector was made on an actual highway.Comprised with the layout based on experience，the results show that the proposed layout optimization method of data collector can not only ensure the effectiveness of the whole course monitoring of highway，but also save the quantity cost of the collector.

Key words: traffic and transportation engineering, data collector, layout, optical imaging, whole course monitoring, highway alignment