摘要
针对某型现代军用飞机的研制要求,设计了基于ARM微处理器的机载语音告警系统。该系统硬件设计采用立体数字语音转换器,并对语音采用差分方式输出以提高抗干扰能力,设计了50 ms掉电保护。软件采用U-Boot的移植及告警命令优先级的调度处理技术,并将大语音库从NAND Flash直接加载到SDRAM中,减小发音间隔。其应用结果表明,该机载语音告警系统能根据战场形势变化解析告警命令后对飞行员发出告警语音,并且接收到告警命令到发出告警语音间隔小于40 ms,适应现代复杂多变的战场环境,告警语音音质清晰、无间断音。
This paper designed the airplane voice-warning system based on ARM microprocessor according the requirements of the specific aircraft. The system used stereo digital-to-speech voice chips and the differential-output to improve anti-jamming capability and introduced 50ms power-down protection in the hardware design. And it introduced U-Boot porting and alarm order priority processing and loaded a large speech database from NAND Flash into SDRAM directly to reduce sound interval in the software design. The voice-warning system has been applied in the specific aircraft. The result shows that this system can warn the pilots according to situction of the battlefied, and its interval is less than 40ms from receiving command to warning. The warning voice is clear and with uninterrupted sound.
出处
《电子设计工程》
2010年第9期167-170,共4页
Electronic Design Engineering
