【摘要】 介绍一种以压频转换来实现捷联惯性制导系统惯性器件信号采集的方法。在本系统中以TI公司的TMS320C6711 DSP器件为核心,采用VFC型ADC转换器件AD652,利用可编程的定时器/计数器芯片8253对AD652的输出脉冲串进行计数。对系统硬件平台的方案设计和软件设计进行了分析。分析结果表明,本系统充分利用了压频转换芯片抗干扰能力强、应用灵活的优点,满足了导弹捷联惯性制导数据采集系统可靠性高的要求。更多还原

【Abstract】 A design of data acquisition system based on DSP is introduced in this paper,and the system is applied to a certain strapdown inertial navigation system(SINS).TMS320C6711 DSP is the core of the data acquicition system,which is produced by TI Corporation.Compared with A/D,VFC AD652 is selected.As a programmable Timer/Counter,8253 takes count of the output pulse of AD652.The hardware and software plan of the system is analyzed.The better anti-interference of VFC as well as its flexible application is taken full advantage of,which is indicated by test results. Moreover,its higher precision and reliability for the request of SINS are notable.更多还原