基于STM32F405VG的开放式双道医用信号仪的研制及应用

Development and application of medical double-channel signal instrument based on STM32F407 with opening style

为了满足研究各种细胞、组织等的电生物效应所需的高精度特殊刺激信号以及实验教学和医学仪器调试和维修等的需求,利用高性价比的32位微处理器STM32F405VG、高性能单频信号发生芯片AD9834研制了一种开放式双道医用信号仪。该仪器既能够同时输出两道高频和高位相差精度的常用信号(如三角波、方波和正弦信号)或生理信号(如心电、肌电和脉搏信号)以及特殊波形的信号,也可二者各输出一道信号,且其信号波形可以自定义。该仪器具有体积小、性能稳定、操作简便、显示直观等优点,输出信号开放且双道可广泛用于医学中电生物效应及医学其它科研、医学仪器的调试和维修等。

To meet requirements of the high precision special stimulating signals for researching electricity biological effects of cells, tissues and so on, and other medicinal study, experiment teaching and medical instnanent maintenance, a opening- style and double- channel medieal signal generator, which takes the monolithic microcomputer STM32F405VG and the high performance monofrequent signal chip AD9834 as the core, is realized. This instnanent can simultaneously output two physiological and special waveform signals, such as electrecardiosignal, electromyo signal, pulse wave signal, or produce the high - frequency precision and phase difference precision commonly signals, which include triangular wave , square - wave and sine ones, or together the physiology or special wavefonn signal and the commonly signal. The results show that it has many merits, such as the small volume, the stable property, the simple operation, visual display and so on. In addition, its signal waveform can be customized. On the whole, this generator can be widely used in electricity biological effects and other medical research, adjustment and maintaining of medical instrument and so on.