无线片上系统(System on Chip,SoC)已成为物联网产业发展的基础,在现代信息社会中占有越来越重要的地位。但由于通信算法的复杂化、通信协议的多样化,对无线通信设备的要求也在提高。针对此问题,使用Arm®Cortex™-M0处理器设计无线S...无线片上系统(System on Chip,SoC)已成为物联网产业发展的基础,在现代信息社会中占有越来越重要的地位。但由于通信算法的复杂化、通信协议的多样化,对无线通信设备的要求也在提高。针对此问题,使用Arm®Cortex™-M0处理器设计无线SoC,使用先进高性能总线(Advanced High-performance Bus,AHB)与先进外围总线(Advanced Peripheral Bus,APB)连接外设,Msi001芯片采集FM信号后通过解调算法得出解调信号,利用接收信号的强度指示(Received Signal Strength Indicator,RSSI)模块实现FM电台收发和自动搜台,结合液晶显示器(Liquid Crystal Display,LCD)屏、矩阵键盘、数码管等模块实现人机交互,相比传统无线通信设备有更好的音质和更快的响应速度。展开更多
The controller plays an important rol e in microwave landing system(MLS) navigation equipment.The embedded advanced reduced-instruction-set-computing(RISC) machine(ARM) is introduced to de velop a new MLS controller b...The controller plays an important rol e in microwave landing system(MLS) navigation equipment.The embedded advanced reduced-instruction-set-computing(RISC) machine(ARM) is introduced to de velop a new MLS controller based on the functional requirements.A design includ ing hardware and software of an ARM system is given.The hardware design involve s a ARM smallest system and its interface.μC/OS-II,a good real-time operating system(RTOS),is i ntroduced in the software design.The task partitioning and management are also i nvolved.The experimental results demonstrate that the embedded ARM technique is an effective way in the complex multi-task system,and it meets the high inte gration and real-time processing requirements of the navigation equipment.展开更多
针对目前国内气象数据采集器几乎是利用国外产品的现状,给出了一种基于ARM(Advanced ReducedInstruction Set ComputerM ach ines)嵌入式处理器的多通道气象数据采集系统的设计方法。通过软、硬件技术的结合,实现了8通道模拟信号的采集...针对目前国内气象数据采集器几乎是利用国外产品的现状,给出了一种基于ARM(Advanced ReducedInstruction Set ComputerM ach ines)嵌入式处理器的多通道气象数据采集系统的设计方法。通过软、硬件技术的结合,实现了8通道模拟信号的采集,发挥了嵌入式系统在气象数据采集系统中的运用优势。同时采用CF(Compact F lash)卡存储技术和USB2.0(Un iversal Serial Bus 2.0)技术、以太网通信方式,弥补过去气象数据采集器通信方式单一、存储方式固定、软件设计复杂等缺点。实验结果表明,该数据采集系统采样精度达到14 b it,采样率为140 kHz/s,并实现了CF卡存储和3种不同通信方式。展开更多
摘要The controller plays an important rol e in microwave landing system(MLS) navigation equipment.The embedded advanced reduced-instruction-set-computing(RISC) machine(ARM) is introduced to de velop a new MLS controller based on the functional requirements.A design includ ing hardware and software of an ARM system is given.The hardware design involve s a ARM smallest system and its interface.μC/OS-II,a good real-time operating system(RTOS),is i ntroduced in the software design.The task partitioning and management are also i nvolved.The experimental results demonstrate that the embedded ARM technique is an effective way in the complex multi-task system,and it meets the high inte gration and real-time processing requirements of the navigation equipment.
摘要针对现有广播现场录音设备存在的问题,开展基于高级精简指令集机器(Advanced RISC Machine,ARM)平台的便携式录音采集设备研发。设备以ARM Cortex-A53处理器为核心,集成24位高精度音频采集模块、1 dB步进可编程增益放大器及嵌入式多媒体卡(embedded Multi Media Card,eMMC)固态存储,配备低功耗管理与快速启动机制。经过高噪声环境实测,该设备在信噪比、响应速度、续航能力及增益精度方面均显著优于传统设备,能够满足广播级现场录音需求。
摘要针对目前国内气象数据采集器几乎是利用国外产品的现状,给出了一种基于ARM(Advanced ReducedInstruction Set ComputerM ach ines)嵌入式处理器的多通道气象数据采集系统的设计方法。通过软、硬件技术的结合,实现了8通道模拟信号的采集,发挥了嵌入式系统在气象数据采集系统中的运用优势。同时采用CF(Compact F lash)卡存储技术和USB2.0(Un iversal Serial Bus 2.0)技术、以太网通信方式,弥补过去气象数据采集器通信方式单一、存储方式固定、软件设计复杂等缺点。实验结果表明,该数据采集系统采样精度达到14 b it,采样率为140 kHz/s,并实现了CF卡存储和3种不同通信方式。