摘要
传统天文测量的授时靠收讯机收录无线电时号来完成,但这种授时具有设备笨重、易受无线电干扰的缺点。为避免传统授时方式的缺点,研究将单片机计时用于天文测量的授时。应用单片机内部的定时器以及串口功能,设计了一种基于单片机的授时系统,详细介绍了实现过程及软件工作流程。该系统在整秒计时结束后向外界发送脉冲信号,并输出时间数据。经过长时间的实验,该系统工作稳定、可靠,可用于对一般天文测量的授时。
The time service in traditional astronomic surveying is realized by receiving short-wave time-signal.Its equipment is heavy and the signal receiving is easy to be disturbed.To solve this weakness,the application of single-ship in time service is studied.A timing system is designed based on the timer and serial-port in signal-ship.The design and implementation of this system is presented in detail.The pulse per second and time data are transmitted from the system after every second.The long time experiment proves that the system is steady and dependable,and can be used in the time service of low precision astronomic surveying.
出处
《国外电子测量技术》
2010年第12期81-84,共4页
Foreign Electronic Measurement Technology
关键词
授时
串口
单片机
秒脉冲
天文测量
Time service
Serial port
Single-ship
Pulsed per second
Astronomic surveying
