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USB广播播放控制系统采用“一线通”设计方案,整个外部设备与主控计算机只有一根USB线相联,简化了结构,提高了可靠性。详细介绍了系统的硬件电路的设计和软件模块的编程,包括接口与主控电路、数模模数转换电路、调频电路的设计以及USB固件程序、USB驱动程序、播放控制窗口程序的编制。该系统功能强大,性价比较高,在各类学校及企事业单位等小型广播站具有广阔的市场前景。
USB broadcast control system uses “one-line through ” design, the entire external device and the host computer has only one USB cable connected to simplify the structure and improve reliability. The design of the hardware circuit and the programming of the software module are introduced in detail, including the design of the interface and the main control circuit, the digital-to-analog conversion circuit, the design of the FM circuit and the programming of USB firmware, USB driver and playback control window. The system is powerful, cost-effective, small schools in various schools and enterprises and other small radio stations have broad market prospects.