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母线槽参数检测机构运动控制电路设计.doc


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摘要本文根据自动检测母线槽导电片电阻及导电片之间的绝缘强度等技术参数的要求,设计了母线槽参数检测机控制系统(下位机) 。本设计采用 8031 作为 CPU ,外扩程序存储器和数据存储器;I/O 口用 8255 扩展, 用来控制位置检测、压力继电器等信号的输入和异步电机起停、测量头切换等信号的输出; 键盘及选择开关用 8155 扩展,步进电机脉冲信号经过锁存器输出; 6位 LED 静态显示: 其中一位 16 段的“米”字形的 LED 用于显示字母,其余五位七段 LED 用于显示数字。母线槽主要技术参数自动检测时,下位机接受上位机发送的启动信号开始工作,控制检测台的传送装置和气压传动定位机构传送和定位母线槽。接着下位机通过运动机构控制检测系统导电片的电阻与导电片之间的绝缘强度,并显示控制轴的位移量。该控制系统硬件电路经进一步完善,结合控制软件,能够自动控制检测头的移动及检测,而整个控制系统还能自动控制母线槽的传送、定位、贴标、升降以及包装。整个控制系统的自动化程度高, 避免了手动检测效率低、安全性差等缺点, 在母线槽技术参数自动检测方面有一定的参考应用价值。关键词: 母线槽;检测机构;控制系统;硬件电路南京工程学院自动化学院本科毕业设计(论文) 2 ABSTRACT According to the requirements of automatic ally detect ing the resistance of conduct ing plates and the insulation strength between them , this paper advances a design scheme for the control system of bus duct parameter detection machine ( subordinate machine), and introduce s the design process for the hardware circuit of control system in detail. T his hardware circuit select s the single chip 8031 of MCS-51 series as the CPU . It expands the p rogram memory of 32K and d ata memory of 4K to storage the monitor program and correlational data , and designs a6 bit LED static display circuit. Some I/O ports are expanded to control the input of position detection signal, pressure relay signal , etc; and they also control the output of start-up singal and stop signal for the asynchronous mo tor , switch signal for the detector, etc. At one time, the interface chip 8155 is selected to pilation k eyboard and the kind option switch of bus duct . Otherwise, the flip-latch 74LS273 is selected to control the output pulse signal of pros and cons to turn for the 4 step motors . If this hardware circuit of control system is consummated, and bined with control software, it can automatic ally control the move ment and detection of detector. Moreover, the whole control system can automatic ally control the transmission, orientation, past ing mark , and package of the bus duct. So, the automation degree of the whole control system is high , and the disa

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