嵌入式便携中医脉象信息采集电路的研制

Development of a portably embedded pulse signal acquisition circuit

脉诊是中医四诊的重要组成部分。为了研制嵌入式便携的三通道中医脉象采集电路,本文:①采用USB总线电源,无需单独的供电系统,减小体积,增加系统通用性;②采用脉象传感器、仪表放大器、A/D转换器、ARM嵌入式微处理器等体积小、功耗低的高性能电路元器件;③从嵌入式的内涵出发,软硬件紧密耦合,对系统的功能、体积、功耗等方面精心设计,结果:高性能的元器件、合理的设计、良好的通讯方式,使真实、原始脉象信息的实时采集得到保证。经测试,本电路的性能达到要求,可用于便携式脉象信息的采集与研究。

Pulse diagnosis is an important component of the diagnosis methods in traditional Chinese medicine. In order to develop a portably embedded pulse signal acquisition circuit, this paper took the following methods： ① Power： Used USB bus power supply. Without an extra power supply to reduce the size of the circuit and increase the field of application. ② Component： Used low power dissipation and small electronic component. ③ Design：Used elaborated design on software, hardware, function, size, and power dissipation, good components, excellent circuit design, and fine communication guaranteed accurately real-time signal acquisition. In conclusion, this circuit design is practical and can work well.