Tunnel Valik together with bridge across the Uhlava river belongs to the last section of the by-pass highway of the city of Plzen and D5 highway leading from Prague to Rozvadov. Control system of tunnel Valik was powered by two Czech companies, GEOVAP and Teco. Tecomat PLC devices from Teco company provides control of tunnel. Reliance SCADA provides visualization of the tunnel and saves data from running.
Tunnel Valik with its 380 meters of length ranks among shorter constructions. But with its traffic density, which is more than 20,000 vehicles per a day, it ranks among the constructions with the highest requirements for the equipment from the safety point of view.
Control room of the Police and Road Destricts located in Svojkovice
The main control room, located 25 kilometers away from the tunnel, is equipped by two computer stations. Traffic in the tunnel is displayed on the screen (controller) mounted on the wall in the Police and Road Destricts control room. Reliance provides control of the traffic in the tunnel including control of two information drive-in gates. Entire tunnel technology is controlled by seventeen TECOMAT PLC devices.
Implementation of the control system included an installation of the data server. This data server, with Reliance Control Server software, is directly connected with control computers in the main control room. The data server provides historical data that can be displayed on the sreen in the control room, communication with other systems connected to the network and data logging from the operation.
The large screen in the control room
The drive-in gate can display inportant information for the drivers
Picture of the Valik tunnel
Each PC workstation of the control room is equipped by two network cards for direct connection with the main and backup control systems of the tunnel. The TECOMAT system maintains at a time the independent logic connection with each superior computer through a common physical network connection.
Reliance system continuously provides communication with data sources and controls their validity. It visually informs on the condition of communication and data validity of each object by means of yellow or red frames. It also monitors, which PLC in the tunnel is the primary or the backup one and in case of their possible substitution, it automatically switches to the primary PLC. The system controller is informed about this substitution.
The system controller (screen mounted on the wall) has several view screens at his disposal. The traffic scheme is the basic scheme being used.
The top part of the screen includes:
The main screen includes:
The bottom bar is used for monitoring and confirmation of all system messages.
The bottom part includes a number of buttons for switching to the following view screens.
Visualization of the tunnel traffic
Taking over of the command
Visualization of the fire detection in the tunnel
Visualization of the tunnel lighting
Visualization of the drive-in gate
Control system topology


Country
Czech Republic
Name
Visualization and control of the Valik tunnel
Implemented by
Teco, a. s.
Date
2006
Control System
17x Tecomat TC 700
Software
6x Reliance Runtime Control over 10,000 data points
1x Reliance Runtime Server with 10,000 data points
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