【摘要】 针对当前公交车站候车人数、电梯候梯人数自动检测困难,已有系统检测误差大、设备复杂的现状,设计了一种基于超声波传感器阵列的人数自动检测系统。系统以STC89C52作为核心控制器,运用超声波的测距原理。超声波传感器按照蜂窝状排列在人群上方,利用微处理器控制多组超声波传感器分别测距,最后综合计算超声波传感器阵列测量的距离数据,得到区域内的人数。系统可为公交车调度、电梯调度系统提供人群数量,为实现自动调度或统计提供支持。更多还原

【Abstract】 At present,it is difficult to automatically detect the number of persons waiting for public transportation or elevators,and the existing detection systems are featuring poor accuracy and device complexity,thus the automatic detection system based on ultrasonic sensor array is designed for quantity of crowd. The system is equipped with STC89C52 as the kernel controller,and using ultrasonic ranging principle. The ultrasonic sensors are arranged above the crowd in accordance with cellular form,multiple groups of ultrasonic sensors are controlled by microprocessor to measure the distance; the distance data measured by ultrasonic sensor array are calculated comprehensively,to obtain the number of persons in the region. The system can provide the number of crowd for public transportation scheduling and elevators dispatching systems,to support implementation of automatic scheduling or statistics.更多还原