Isolated gateway

Abstract

The invention provides an isolated gateway, which is mainly applied to information systems of industrial enterprises. The isolated gateway comprises a control end linking module, a client linking module and an isolation module, wherein the control end linking module and the client linking module are electrically connected with the isolation module respectively; the control end linking module is electrically connected with a control end, and the client linking module is connected with a client; a control module controls the control end linking module and the client linking module; when the control end is connected with the isolation module through the control end linking module, the client is disconnected with the isolation module; and when the client is connected with the isolation module through the client linking module, the control end is disconnected with the isolation module. The isolated gateway can effectively block network direct connections to ensure that the control end and the client cannot be connected to the isolation module at the same time.

Description

technical field [0001] The invention relates to an isolated gateway. Background technique [0002] In the information system of modern industrial enterprises, various DCS (Distributed Control System, distributed control system), PLC (Programmable logic Controller, programmable logic controller), measurement and control equipment, SCADA (Supervisory Control And Data Acquisition, data acquisition and monitoring control system) constitutes the process control system. In the prior art, the process control system is located in the bottom workshop and is responsible for basic production control. [0003] With the development of enterprise information construction, it is urgent to realize the interconnection between the process control system and the upper management information system. In this way, the two-way information flow interaction between the management management and the workshop execution layer can be completed in real time, so that the enterprise can ensure real-time ...

AI Technical Summary

Problems solved by technology

However, because gatekeeper products do not have the ability of industrial data collection and protocol analysis, they only realize simple network isolation, so there are strict restrictions on the direction of data communication (generally one-way isolation) and the length of data bytes, resulting in When applying, the existing SCADA system must redevelop the communication interface to adapt to the network gateway, which greatly increases the development cost and implementation difficulty

In addition, due to the limited communication function, it is difficult or even impossible for applications with complex communication processes, especially those that require data control.

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