graded signal meaning in English

分级信号

At - grade signal controlled junction
交通灯控制地面路口
When the egg - reached signal is sent to pc , through i / o card , the pc drives the video card to capture one frame picture to ram . after a series of mathematical analysis , the pc send the yolk color ' s or egg size ' s grading signals to outer signal delayed controller by i / o card again . last , the controller sends the delayed signals to outer execute equipment to finish classifying
蛋已到达光室的控制信号由数字量i o卡输入到计算机；计算机通过对端口的查询获知这一信号后立刻驱动图像采集卡将当前光室中的一帧图像采集到主机内存中，进行相应的计算分析后将光室中鸭蛋蛋芯颜色或大小分级信号再经由数字量输入输出卡，送至外部信号延时控制器；控制器将此信号延时后送至外部执行机构，完成分级动作。