Wheeldon J A, Pintar F A, Yoganandan N
Dept. of Electrical Engineering and Computer Science, Milwaukee School of Engineering, WI 53202-3109, USA.
Biomed Sci Instrum. 1997;33:269-74.
The Biomechanics Laboratory of the Neuroscience Department of the Medical College of Wisconsin is currently engaged in research involving trauma biomechanics. For some experiments, 24 channels of analog data must be sampled at 10,000 Hertz. The Modular Data Acquisition System (MDAS) is able to acquire up to 60 channels of analog data at sampling intervals as low as 6 microseconds. This excellent hardware system has only menu-driven utility software that is no longer supported and required updating to a Graphical User Interface (GUI). Using National Instruments LabWindows/CVI software a GUI was developed. The GUI consists of 9 Graphical User Interface panels controlled by a 3000 line C program "MDAS3SAM". "MDAS3SAM" controls a driver program "MDAS_SAM" which communicates with the MDAS unit via a National Instruments GPIB interface. The 9 GUI panels allow the user to configure the MDAS system (selecting channels, sampling interval, triggering levels etc.), start sampling the data, writing the data to hard disk, graphing the data and printing the graphs. The new system allows the user to quickly reconfigure the MDAS unit and obtain accurate results.
威斯康星医学院神经科学系生物力学实验室目前正在进行涉及创伤生物力学的研究。对于一些实验，必须以10000赫兹的频率对24通道模拟数据进行采样。模块化数据采集系统（MDAS）能够以低至6微秒的采样间隔采集多达60通道的模拟数据。这个出色的硬件系统只有菜单驱动的实用软件，该软件不再受支持，需要更新为图形用户界面（GUI）。使用美国国家仪器公司的LabWindows/CVI软件开发了一个GUI。该GUI由9个图形用户界面面板组成，由一个3000行的C程序“MDAS3SAM”控制。“MDAS3SAM”控制一个驱动程序“MDAS_SAM”，该驱动程序通过美国国家仪器公司的GPIB接口与MDAS单元通信。这9个GUI面板允许用户配置MDAS系统（选择通道、采样间隔、触发电平等等），开始对数据进行采样，将数据写入硬盘，绘制数据图表并打印图表。新系统允许用户快速重新配置MDAS单元并获得准确的结果。
