基于科学CCD的低纬子午环的数据采集系统

本文主要介绍基于科学CCD的低纬子午环数据采集系统的硬件构成及软件设计。为了能绝对而又精确地确定天体的位置 ,低纬子午环需要配备多种精密的测量装置 ,如 :GPS与时钟、 9路Reticon线阵、视频CCD、科学CCD、圆感应同步器、光栅线性位移传感器等。为了能有序地控制并采集这些装置的数据 ,我们设计了一个包含 3个PC机的数据采集与控制系统。文中将描述测量装置的功能 ,然后介绍数据采集方法及软件设计

Data Acquisition System in the LLMC

The hardware structure and the software designed for the data acquisition system based on the scientific CCD in the LLMC are described in this paper.To determine the position of a celestial body absolutely and precisely,the LLMC is equipped with several precision measurement devices such as one precision clock,nine Reticon linear photodiode arrays,one video CCD,one scientific CCD,one rotary inductive synchronizer,and one grating linear displacement transducer.To control these devices properly and collect data from these devices orderly during observations,a data acquisition and control system is developed,which is composed of three subsystems.The functions of the measurement devices in the system are illustrated,the methods of data acquisition are discussed,and our thoughts about software programming are presented in the paper.