基于电涡流现象的车流量检测板的设计.pdf

! 2006 2 217 基于电涡流现象的车流量检测板的设计 郑国恒, 张晓朋, 肖 杰 ( 450052) : 为了给智能交通系统提供一个可靠的车流量传感器, 研 了基于电涡流现象的车流量检测板, 给出了以 AT 89S52 单片机为核心的车流量检测板的硬件电路和软件框图, 指出了所遇问题的解决办法本检测板在郑州等地进行了 现场试验, 结果表明该检测板能够稳定可靠运行, 检测精度高, 取得了满意的效果 : 电涡流; 受控振荡; 脉宽测量; 车流识别 : TP2 126 : B : 1004 373X ( 2006) 02 081 04 Design of the Board of Measuring Vehicle Flux Based on Electricity Turbulent Flow Phenomenon ZH ENG Guohen , ZH ANG X iaopen , XIA O Jie ( School of Physics En ineerin , Zhen zhou University, Zhen zhou,450052, China) Abstract: In order to provide a reliable traffic flow ma nitude sensor to the intelli ence transportation system, t his art icle studies the board of measurin vehicle flux based on the electricity t urbulent flow phenomenon, produces the hardware elect ric circuit and the software dia ram of the board of measurin vehicle flux w hich takes the AT 89S52 as the core, points out the questions solution The board of measurin vehicle flux in places such as Zhen zhou has carried on the field test, finally indicated that the board of measurin vehicle flux is able to stably and reliably work and the examinat ion precision is hi h It has obtained the satisfactory effect Keyw ords: electricity t urbulent flow ; controlled vibration; pulse w idth measurement; vehicle flux reco nition , , , , , , [ 1] 20 kH z f 180 kH z , [ 2] , , , , , , f