Distributed flexible control method suitable for city long tunnel

Abstract

The utility model relates to a distributing type flexible control method which is applicable to the long tunnel in the city. The utility model is composed of a upper network and a lower network and characterized in that the upper network is in the central control room of the system to control the operation of the lower control flow, the data handling, the storage, the display, the alarming, the report generation as well as the data from some data management stations and the analytic system operating stations; the lower network introduces the can concentric line so as to integrate a plurality of PLC into the can bus network. PLC realizes the analog collection and the logic control. The collected data is delivered the upper network via the can concentric line; the upper network sends out the control command to PLC which carries out the relevant operation as per the order received. The optical fiber is used as the transmission medium between the upper network and the lower network. For the utility model, each test point is controlled by one PLC and then re-concentrated to the central control room. Thus, the method is almost isolated from the civil work construction, so as to facilitate the construction management for the long tunnel monitored control system in the city.

Description

technical field [0001] The invention belongs to the field of control engineering, in particular to a distributed flexible control method suitable for urban long tunnels. Background technique [0002] Since the automation control system began to be applied in the world in the 1960s, it has developed rapidly. In the 1980s, the emergence of a wide variety of distributed control systems and programmable controllers has improved the reliability, real-time performance, operability and maintainability of automation. It has been greatly improved and has become the mainstream product of the control system. However, since both DCS and PLC use manufacturer-specific integrated circuits, there is no communication between similar systems or between this system and other systems. In the 1990s, there was a revolutionary progress in the field of personal computers, and then began to enter the industrial field, and took automation as its main goal, so the PC-based industrial process control s...

AI Technical Summary

Problems solved by technology

If you continue to use the usual centralized rigid control structure, such as segmented centralized control, it will lead to construction (the construction of this system is intertwined with the progress of civil engineering), construction management is difficult to control, maintenance is difficult, the cost is high, and the fault analysis method is weak, which will affect the robustness of the system and the system. safe operation of

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