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针对DCS系统外接蜂鸣器声音小、报警级别和部位不易区分,可靠性差等问题,提出了一种基于Nios II的语音报警系统。报警音频将包含报警的详细信息,并预先存放于SD卡中。当警报出现时,系统将根据报警信号触发SD卡中相应的语音警示工作人员采取措施。本设计基于SOPC技术,主要包括软硬件设计2个主要部分。硬件部分构建了控制核心,实现系统与外设的接口;软件部分主要通过SPI,I2C协议,实现了外设的配置以及对音频文件管理、读取和传输,最终实现音频解码与播放。
Aiming at the problems such as the small buzzer of DCS external buzzer, the difficulty of distinguishing the alarm level and location, and poor reliability, a voice alarm system based on Nios II is proposed. The alarm audio will contain the alarm details and pre-stored on the SD card. When the alarm appears, the system will trigger the corresponding voice alarm in the SD card according to the alarm signal to take measures. The design is based on SOPC technology, including two major parts of hardware and software design. The hardware part constructs the control core and realizes the interface between the system and the peripheral hardware. The software part mainly realizes the peripheral configuration and the management, reading and transmission of the audio file through SPI and I2C protocols, and finally realizes the audio decoding and playing.