通过2路红外发射，顺序接收，检测收发功能是否正常用手遮挡对应的发射管，用共阳数码管的a、d端模拟左右2端每60ms分别检测2路发射，通过每组发射10个脉冲，如果接收到的脉冲个数大于6，表明有遮挡存在-Order to receive through the 2-way infrared emission detection transceiver functions are normal hand blocked the launch tube, common anode digital tub

通过2路红外发射，顺序接收，检测收发功能是否正常,用手遮挡对应的发射管，用共阳数码管的a、d端模拟左右2端,每60ms分别检测2路发射，通过每组发射10个脉冲，如果接收到的脉冲个数大于6，表明有遮挡存在-Order to receive 2-way infrared emission detection transceiver function is normal, hand block the corresponding launch tube, pipe a common anode dig