GPS模块在打铃控制器中的应用

设计了基于GPS集成模块和单片机最小系统的自动校时打铃控制器。单片机通过对GPS集成模块E531的串行口进行数据采集,得到实时格林威治时间,然后经过时区调整转换为标准北京时间。将其作为打铃控制器的时间基准对系统本地时钟DS1302进行校准。在GPS有效捕获卫星信号时可以及时得到标准时间,当GPS模块捕获卫星信号失效时可以通过本地时钟继续工作,这样既保持了时间的准确性又保证了控制器工作的连续性。

Application of GPS in ringing controller

Auto-timing ringing controller is designed based on GPS OEM module and SCM minimal system.MCU got the Greenwich time from E531 module.Then converted the time to Beijing time by adjusting the time zone.And the Beijing time calibrated the local chip DS1302.The controller based on the time of satellite when the GPS satellite signals received or the time of local chip when the GPS module can not receive satellite signals.In this way,it maintaines the accuracy of the controller’s time and ensures the continuity of it’s work.