毕业设计（论文）-PJ-54织布机89C2051单片机控制系统设计.doc

本科毕业设计(论文)
题目: PJ-54织布机89C2051单片机
控制系统设计

摘要
本文作者根据PJ-54织布机的设计要求,分析了PJ-54织布机的工作原理和过程,选用89C2051芯片作为CPU。论文主要介绍了PJ-54织布机控制系统主控电路、故障检测电路、整流电路、以及刹车电路等的设计。在主控电路中设计了电机的正反转、风机的启动、停止等控制电路;在故障检测电路中,设计了断纬、张力、计长、左右捻边、电机过热的控制电路;在刹车电路中设计了高压刹车、低压锁定的控制电路;在整流电路的设计中设计了四个整流电路,分别将交流电压9V、15V、10V、91V整流为直流电压5V、12V、12V、110V。控制电路与强电电路接口选用中间继电器。
同时设计了控制系统控制程序,包括主程序和中断子程序。主程序主要用于一些实时性不高的信号的输入/输出和工作状态管理;中断程序用于处理一些实时性较高的信号的处理。
本文还介绍了用protel 99se绘制控制系统原理图和PCB图的方法和步骤,完成了PJ-54织布机89C2051单片机控制系统原理图和PCB图的设计。
本控制系统选择89C2051作CPU与市场上一些用PLC控制的系统相比,具有稳定性高,控制能力强,价格低廉的特点。刹车电路的功率器件段选用VMOS管,大大提高了控制电路的可靠性。
关键词:织布机;控制系统;硬件设计;软件设计

ABSTRACT
According to the requirement of loom PJ-54, the author analysis the principle and process of loom PJ-54. 89C2051 is chosen as the CPU of the loom controller, the thesis mainly introduced the design of main control circuit, diagnose circuit, commutate electric circuit, and brake circuit for loom PJ-54. The design of the main control circuit, include the motor’s rotation and fan’s rotation, the design of diagnose function, include the tension test, the break down detection of latitude thread, length measurement, and the overheated protection for the motor is plished; in mutate electric circuit, 4 module were developed to change the 9V, 15V, 10V, 91V voltage to 5V, 12V, 12V, 110V direct current voltage. The high voltage connect is achieved with the intermediate relay.
This paper also introduced the usage of protel 99se and the design procedure of 89C2051 system for PJ-54 loom.
The control programs of the control system were classified as main programs and interrupt programs. Main programs are mainly used for low real-time input/output of the signal and the management of the work state. Interrupts are used to deal with some real-time dispose of the signal.
Compare with control systems using PLC, the control circuit choose 89C2051 as CPU, its stability is high, the control of ability is strong, and the price is low. using VMOS device as ponents, the reliability o