论文部分内容阅读
美国北卡罗莱纳州的“选择电子公司”发展了一种非接触式测量及控制系统,用以控制连铸过程中钢液液位,控制十分精确,从而有助于消除连铸坯的表面缺陷,减少金属浪费。该系统的基本单元是一只 Optocator,它由一光源(通常为激光)、一只高分辨固体光学电子摄象机及一只主处理器组成。该装置安装在水冷套内,放置在高于测定钢液600毫米的框架上,这样激光束可以垂直打在钢液表面。激光束的图象能指示出钢液液位,并用摄象机进行观察,然后由处理器来分析结果。Optocator 装置在测定范围超过512毫米时,其分辨率可达0.25毫米。在整个工作过程中,摄象机的镜头及光源均用一只鼓风机来鼓风,使它们始终保持洁净。据说,该装置不受相对环境反射光或温度变化之影响。来自处理器的输出可用模拟方式或以晶体管—晶体管逻辑(TTL)方式显示出来。因
Select Electronics, North Carolina, USA, has developed a non-contact measurement and control system to control the level of molten steel in the continuous casting process with very precise control to help eliminate the surface of the slab Defects, reduce metal waste. The system’s basic unit is an Optocator, which consists of a light source (usually a laser), a high-resolution solid-state optical electronic camera and a main processor. The unit is installed in a water-cooled jacket and placed on a frame 600 mm above the test liquid, so that the laser beam can strike perpendicularly to the surface of the molten steel. The image of the laser beam indicates the level of the molten steel and is viewed by the camera and the result analyzed by the processor. The Optocator unit has a resolution of up to 0.25 mm over a measurement range of over 512 mm. Throughout the work process, the camera’s lens and the light source are used to blow a blower to keep them clean. The device is said to be immune to changes in relative ambient reflectance or temperature. The output from the processor can be displayed in analog mode or in Transistor-to-Transistor Logic (TTL) mode. because