基于STM32的调幅信号接收实验系统设计
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摘要
针对无线通信技术教学中存在的理论与实践脱节问题,设计了基于STM32的调幅信号接收机实验系统,该实验系统由硬件及软件两个部分组成,硬件部分包括低噪声放大、本振、混频、中频放大及解调等,软件部分包括本振频率设置及自动增益控制。通过搭建该实验电路,引导学生理解电路理论对实践的指导作用,培养学生分析问题与解决问题的能力,提高学生的工程应用能力。实践结果表明,该实验可大大激发学生的学习兴趣,提高无线通信技术课程的教学效果。
To solve the disconnection between theory and practice in the teaching of wireless communication technology,an experimental system of amplitude modulation signal receiver based on STM32 is designed. The experimental system is composed of two parts: hardware and software. The hardware part includes low noise amplification,local oscillator,mixing,intermediate frequency amplification and demodulation. And the software includes local oscillator frequency setting and automatic gain control. By setting up the experimental circuit,the students can be guided to understand the guiding role of circuit theory and to use it in practice. Ability of analyzing and solving problem can be cultivated; the engineering application ability is improved. The practice results show that this experiment can greatly stimulate the students' interest in learning and improve the teaching effect of wireless communication technology course.
To solve the disconnection between theory and practice in the teaching of wireless communication technology,an experimental system of amplitude modulation signal receiver based on STM32 is designed. The experimental system is composed of two parts: hardware and software. The hardware part includes low noise amplification,local oscillator,mixing,intermediate frequency amplification and demodulation. And the software includes local oscillator frequency setting and automatic gain control. By setting up the experimental circuit,the students can be guided to understand the guiding role of circuit theory and to use it in practice. Ability of analyzing and solving problem can be cultivated; the engineering application ability is improved. The practice results show that this experiment can greatly stimulate the students' interest in learning and improve the teaching effect of wireless communication technology course.
引文
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[2]李安,周南润,王玉皞.通信工程国家级特色专业虚拟实验室建设与实践[J].实验室研究与探索,2013,32(1):150-154.
[3]张艳红,赵恒.通信原理课程教学改革探索[J].河南教育学院学报(自然科学版),2013,22(3):62-63.
[4]朱旭芳,马知远,潘丽.基于零中频解调的高精度频率特性测试仪设计[J].实验室研究与探索,2016,35(6):62-65.
[5]黄鑫,陈智军,陈涛,等.声表面波标签的仿真与实验研究[J].中国机械工程,2014,25(5):651-656.
[6]王轶群.基于STM 32的电机数据无线采集系统[J].仪表技术与传感器,2018,(3):64-66.
[7]王晗,程诚,施嘉儒.基于ADF4351和FPGA的合成频率源的设计[J].电子技术应用,2017,43(10):34-38.
[8]李训栓,周爽,金武,等.一种基于MMIC的甚高频程控增益放大器[J].实验室研究与探索,2017,36(6):73-78.
[9]黄大明,于虹. EMC测试中的峰值、准峰值、平均值、均方根值[J].杭州电子科技大学学报,2013,33(3):9-12.
[10]王俊,徐春峰,杨卫明.软件算法实现局部放电信号包络检波的研究[J].华东电力,2013,41(10):2205-2207.
[11]施昱阳.复合调制广播接收机的实时解调[D].南京:东南大学信息科学与工程学院,2016.
[12]张鸣.通信原理仿真实验系统设计与实现[J].实验技术与管理,2013,30(6):54-57,61.
[13]单秦,闻映红,李滟.高速铁路专用通信信道电波传播特性[J].中国铁道科学,2013,34(2):125-132.
[14]包永强.“通信原理”课程实践教学探讨[J].电气电子教学学报,2013,35(4):114-116.
[15]李安,周南润,王玉皞.通信工程国家级特色专业虚拟实验室建设与实践[J].实验室研究与探索,2013,32(1):150-154.