The proposed Remote SCADA System (RSS) is a smarter, faster and more reliable way
to control high power machines and monitor their sensors, data, and failures. The
proposed system focuses mainly on building our own complete SCADA software and
not using open-source SCADA software. The proposed RSS can use unlimited number of
added Remote Terminal Units (RTU) nodes and each of them can handling unlimited
number of input/output and can be used under different operating systems like Windows
and Android. Using RSS all machines can be monitored and controlled by a single click
from anywhere at any time. By doing this a real-time response from RSS system can be
achieved. It’s mainly based on standard communication techniques between remote
nodes and single server-side application that talk to each node with its own ID and
modify its instant database. So that every time accessing this web application, a real-time
access to these nodes data and a virtual control room controls each General Purpose
Input/Output (GPIO) in the selected node can be gotten. When a new event is happened
in server-side program, it will be broadcasted to all related. On RSS there are two main
points to deal with, the request latency and security of the system. This paper studied how
the system latency and security are improved to obtain the needed values. The proposed
RSS is a very secure program which have 4 security levels; authentication, authorization,
RSA and CBC encryption system. Also, the encryption algorithms used in RSS are RSA
and CBC block cipher encryption system. It is mixed way to prevent any attacker from
breaking the cipher. First of all, RSA generates the public and private keys, and then CBC
generates its Initialization vector and a random encryption key. Then a special function
sends all of these keys encrypted with a pre-stored token in the data base and node
memory which varied from node to another. Finally, node generates its private key from
loaded public key. With this combination the speed of symmetric encryption system and
the security of asymmetric encryption system can be achieved. On the other hand, the
level of security firewalls needed to be Brocken by the attacker to brock the cipher is
increased. The proposed system achieved low cost comparing with reported work; it is
lower than Arduino + WIFI method by five times and 13 times lower than Raspberry-PI
method. The proposed system is applied in educational systems, where it is used for
teaching unlimited number of students Online. |
