基于光栅传感技术的测控系统设计

现在光栅作为精密测量的一种工具,在精密仪器、坐标测量、精确定位、高精度精密加工等领域得到了广泛应用,尤其被广泛应用在机器人生产线等设备中。文章介绍了由光栅位移传感器构成的全自动金属带锯床测控系统。全自动金属带锯床在单片机系统的控制下,完成被锯毛坯材料的输送、夹具的夹紧/放松、锯切长度的测量、定位和切断等工作。操作人员只要按要求输入所需材料的尺寸和根数,锯床就能自动完成预定的工作。由于使用了光栅式位移传感器,锯床的测量和定位总误差小于0.1mm。该系统以AT89C51单片机为核心,扩展了8279等其他逻辑芯片。为了增加系统的抗干扰能力,使其能在操作现场恶劣的电气环境下工作,该系统采用了光耦合器、电源净化等必要措施。

Measurement and Control System Based on Grating Sensing Technology

Grating as a tool in precision measurement,has been widely used in precision instruments,coordinate measuring,precision positioning,high precision the areas of precision machining,particularly been widely used in electromechanical integration equipment.This design introduces the measurement and control system of automatic metal band sawing machine that is made of grating displacement sensor.Under the control of micro controller unit,automatic band sawing machine can complete such as transmitting the raw materials,clamping and loosening the jig,measuring the cut length,orientating,cutting and so on.The sawing machine can auto complete the scheduled work when the operator only input the required materials’size and amount.As the use of grating displacement sensor,the total error of sawing machine measurement and orientation is less than 0.1 mm.This system takes the single chip microcomputer AT89 C51 as control core,expands 8279 and other logic chips.In order to increase the ability of anti-jamming,and enable it to work at execrable environments,this system uses the optocoupler,power purification and other required measure.