【摘要】 本文介绍一种简单、实用的公路收费站行驶车辆检测器的软硬件设计方法。基于感应式环形线圈 ,采用计频方式检测车辆的速度、长度、流量、到达与离开 ,并将有关资料通过RS2 32串口送至收费站监控室的监控主机。通过模拟信号滤波、变压器隔离、多频率设置、软件容错、自适应频率、超时自动复位来保证系统适应应用现场的各种不同环境 ,实现系统的最佳运行状态。更多还原

【Abstract】 The software & hardware designed measures of a simple & applied runnin g-vehicle detector that used in highway tollgate were described in this article . Base on inductive circle loop, use to counting frequency mode detect vehicle’s velocity, length, runoff, arrival and departure, and transmit the corresponding figures to the upper computer in tollgate control center through RS-232 serial p ort of the toll computer, or provide control signal for other toll advice. With analog signals filter wave, inductive transform departure, multi-mode & multi-se tup of hardware and so on, make the system remain the best playing status.更多还原