本设计的指导思想是利用红外发光管发射红外线，红外接收管接收此红外线，并将其放大、整流形成高电平信号.当有人或物挡住红外光时，接收管没有接收到红外信号，放大器将输出低电平，同时将这个电平信号送入单片机进行控制计数，并经译码驱动电路使数码管显示数值。这样就得到要统计的人或物的数量。-The design of the guiding idea is to use infrared emission infrared LED and infrared receiver to receive the i

DS18B20温度采集然后红外发射出去,接收板接收红外并LED显示接收的数据信息,有完整的发射，接收和仿真程序-DS18B20 temperature acquisition and infrared emission out to receive infrared receiver board and the LED display data received information, a complete transmit, receive and simulation program