基于DOS的连续实时数据采集技术

DOS-BASED CONTINUAL REAL TIME DATA ACQUISITION TECHNOLOGIES

连续实时数据采集对状态监测具有重要意义,它能提供充分详细的状态信息和故障信息。文中基于成本低、性能稳定的磁盘操作系统(disk operation system,DOS)环境,介绍实现连续实时数据采集的两项关键技术,一种是直接存储器存取(direct memory access,DMA)技术,一种是双缓冲技术。巧妙应用这两项技术,可使CPU(center processing unit)与DMA控制器(direct memory access controller,DMAC)协调工作,从而实现DOS环境下连续实时数据采集的目的。

Continual real time data acquisition, which provides suficient and detailed condition and fault information, is vital for condition monitoring. Based on the low-cost and steady-capability DOS （disk operation system） circumstance, two key technologies about the realization of continual real time data acquisition are introduced. One is DMA （direct memory access） and the other is two-buffer technology. Skillfully using these two technologies will enhance the coordination of CPU （center processing unit） and DMAC （DMA controller）, which enables the accessibility of continual real time data acquisition in the DOS circumstance.