塔钟的分布式控制

Distributed control for tower clock

简要介绍了分布式塔钟控制系统的结构，对系统的通信协议做了全面的说明，并阐述了上位机和下位机的工作原理，最后介绍了本系统所采取的一些有效的抗干扰措施。

The author introduces the construction of the distributed tower-clock control system, gives a complete description of the communication protocol, and explains the principle of operation of above-computer and lower-computer, at last the author introduces some effective anti-disturbance measures that the system takes.