earticle

영어

SCADA is a concept that is used to refer to the management and procurement of data that can be used in developing process management criteria. The use of the term SCADA varies, depending on location. Conventionally, SCADA is connected only in a limited private network. Later on, SCADA was connected through the internet. There are studies and emerging technology on controlling SCADA via mobile phone. The wireless communication between the mobile phone and the SCADA server can be performed by means of a base station via general packet radio service (GPRS) and wireless application protocol (WAP). The internet SCADA facility and the extension of the HMI to mobile phones has brought a lot of advantages in terms of control, data generation and viewing. As a drawback, come the security issues. In this paper, we discuss web SCADA and its connectivity, the extended HMI to the mobile phones and the issues regarding security. We also suggested a security solution using asymmetric-key encryption.