Abstract: Traditional SCADA is based on the copper wire construction,commonly used in small-scale data collection．With the advancement of the industry informatization,the new SCADA system is gradually evolving into one kind of IP-based and facing massive data acquisition．In this change,SCADA is facing with two problems.One of them is self-adaptive problem of IP data acquisition agreement,and the other is distributed processing problem of mass data acquisition．According to above problems,this paper,based on the soft bus technology for distributed data pipeline and secondary distributed scheduling mechanism,designed and implemented a distributed SCADA,which can be effectively applied to IP-based mass SCADA system.

Key words: SCADA,Distributed,Large-scale data acquisition,Self-adaptive