基于CPLD和ARM完成短波发射机自动调谐控制的设计与实现

发布时间：2018-01-07 04:36

本文关键词：基于CPLD和ARM完成短波发射机自动调谐控制的设计与实现　出处：《黑龙江大学》2014年硕士论文　论文类型：学位论文

更多相关文章： 短波发射机 ARM CPLD 自动调谐

【摘要】：21世纪电子技术飞速发展,广播行业技术水平也得到快速的提升。“有人留守,无人值班”的运行管理模式的提出,对短波发射机自动化运行是必然的,但是自动调谐控制的实现是其前提。DF500A 500kW短波发射机的自动化的实现,将会很大程度的减轻值班员的劳动强度,可以有效地提高了安全播出质量和实验效果。论文设计了一种基于ARM+CPLD的自动调谐控制器。分析了发射机的射频放大系统。介绍了自动调谐原理。描述了自动调谐的需求、设计思想。根据需求提出设计总方案。通过使用ARM7处理器LPC2368来实现自动调谐,确保运动控制的精度更高、调谐速度更快、运动更加平稳。CPLD所用的是Altera公司EPM7512芯片。CPLD完成系统的逻辑控制。硬件设计围绕着核心芯片,进行了ARM与上位机之间的通讯电路板、ARM调谐电路板及CPLD控制电路板外围电路设计。讲述了PCB设计以及调试过程中需注意的问题。确保电路板能在强电磁场环境下稳定可靠的运行。通过系统测试结果分析。最终实现了预期的目标。自动调谐控制器完成的调谐效果可以达到一个经验丰富的工程师的水平。发送出去的广播效果完全符合我们国家的标准自动调谐控制系统投入到实际应用中,可以将值班员从繁重的工作中解脱出来。维护人员可以有更多的精力进行设备维护和技术提高,从而更利于做好传输发射工作,并将加速全国安全传输发射自动控制平台的建设。
[Abstract]:In 21th century, with the rapid development of electronic technology, the technical level of broadcasting industry has been rapidly improved. The operation management mode of "some people stay behind, no one is on duty" is inevitable for the automatic operation of shortwave transmitters. But the realization of automatic tuning control is the premise of the automatic realization of 500kW short wave transmitter, which will greatly reduce the labor intensity of duty workers. It can effectively improve the quality of safe broadcast and the effect of experiment. This paper designs a new method based on ARM. The automatic tuning controller of CPLD. The RF amplifier system of transmitter is analyzed. The principle of automatic tuning is introduced. The requirement of automatic tuning is described. Design idea. According to the requirement, the general design scheme is put forward. By using ARM7 processor LPC2368 to realize automatic tuning, the precision of motion control is higher and the tuning speed is faster. The motion is more stable. CPLD uses Altera EPM7512 chip. CPLD to complete the logic control of the system. Hardware design around the core chip. The communication circuit board between ARM and PC is carried out. The peripheral circuit design of ARM tuning circuit board and CPLD control circuit board. The problems needing attention in the process of PCB design and debugging are described. The circuit board can operate stably and reliably under strong electromagnetic field. After the system test results analysis. Finally achieved the expected goal. The automatic tuning controller can achieve the tuning effect of an experienced engineer level. The broadcast effect sent out is fully in line with our country. The standard automatic tuning control system is put into practical application. The maintenance personnel can have more energy to carry on the equipment maintenance and the technical enhancement, thus is more advantageous to do the transmission and launch work. And will accelerate the construction of the national safe transmission launch automatic control platform.
【学位授予单位】：黑龙江大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN838

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