嵌入式无线音频采集系统设计

Design of embedded wireless audio acquisition system

为优化侦察设备的音频采集与无线传输功能,选用一款基于ARM Cortex-M7架构的高性能微控制器STM32F7系列芯片作为核心,提出一种嵌入式无线音频采集系统。系统采用ATWINC1500无线模块构建WiFi传输方案,支持多种具有WiFi功能的终端接入,可直接移植应用于其他领域。通过具体的软硬件设计,将该系统应用在一款球型侦察设备上,验证了方案的可行性。其测试结果表明,系统性能稳定,其最大无线传输距离提升到100m,改善了音频信号质量等多种指标,具有一定实用性。

In order to optimize the audio acquisition and wireless transmission function of the reconnaissance equipment,an embedded wireless audio acquisition system which selects a high-performance microcontroller based on ARM CortexM7 architecture-STM32 F7 as the core is proposed.The system adopts ATWINC1500 wireless module to build WiFi transmission scheme and supports multiple terminal access with WiFi function.Therefore,it can be directly transplanted and applied to other fields.Through the specific design of hardware and software,the system is applied to a spherical reconnaissance equipment,and the feasibility of the scheme is verified.The test results show that the system performance is stable,the wireless transmission distance has been increased to 100 m,many indicators such as the quality of audio signal have been improved.Therefore,the system has good practicability.