Finally, the overall framework is determined. Based on that, the paper designs every hardware module, that is ARM, signal processing module of digital audio, collection module of digital video, network communication module, LCD display module of TFT driver and alarm interface. 其次对系统方案进行了论证，确定系统总体设计框架，在此基础上设计系统各硬件功能模块：ARM、数字音频信号处理模块、数字视频采集模块、网络通信模块、TFT液晶显示模块和报警接口。
As the data communication path between MPU and TFT-LCD display driver IC of mobile phone, the interface circuit of TFT-LCD display driver IC should supports three kinds of interface : 68-syetem, 80-system and SPI, which have different operation timings and signal lines. TFT彩色液晶显示驱动芯片的接口电路是手机主机与其显示驱动芯片之间数据通讯的桥梁。常用的接口类型主要有68、80和SPI三种，它们的动作时序与所用信号线各不相同。
The functions of human-computer interaction, image display and data storage are completed by the second part, including controller circuit, memory expansion circuit, extended keyboard interface circuit, display driver circuit, real-time clock circuit, extended communication interface circuit and power circuit. 控制与显示模块完成人机交互、图像显示和数据存储等功能，包括控制器电路、存储器扩展电路、键盘接口扩展电路、显示器驱动电路、实时时钟电路、通信扩展接口电路和电源电路。
Hardware system is made of CPU, A / D, D / A, display driver and clock. Software design includes many aspects, such as design of interface, interrupt and clock control, monitoring, etc. 硬件系统由CPU、A/D、D/A、显示驱动、实时钟五个模块组成，软件设计包括谱峰数据的高速采集和存取、人机界面的设计、中断和实时钟控制、监测控制等方面的工作。
In the design of system, all of the interface circuits, including A / D converter, display driver, data memory and output driver, adopt the integration circuits with serial peripheral interface. 系统设计中采用串行接口集成电路来实现数据采集、显示驱动、数据存贮及输出驱动，使系统结构简单，可靠性高；
