Tunnel monitoring

Safe driving in tunnels

The portfolio of tunnel sensors from SICK is designed for urban tunnels, overland tunnels, and tunnels in rail and subway systems. Whether it be routine operation or emergency situations, SICK is your one-stop-shop for virtually all tunnel monitoring applications.

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Tunnel portal

Safety before even entering the tunnel

The traffic sensors from SICK ensure safety before even entering the tunnel portal. They make it possible for overheight or overheated vehicles to stop and prevent accidents in the tunnel portal and fires in the tunnel.

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Condition monitoring

For tunnel sensors

The Monitoring Box from SICK provides an effective solution for monitoring and maintaining devices and sensors in tunnels. Device and sensor states can be monitored in real time, and undesired operational states predicted ahead of time.

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Tunnel monitoring
Tunnel portal
Condition monitoring

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Result 1 - 8 out of 11

  • Visibility (K value) measured according to the scattered light measurement principle
  • Highly available – no moving parts
  • Quick and reliable smoke detection
  • Software developed in accordance with EN 61508 (SIL1)
  • Low faulty alarm rate
  • IP 6K9K enclosure rating thanks to a rugged stainless-steel housing
  • Fog evaporation through integrated heating element (optional)
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  • Visibility (K value) measured according to the scattered light measurement principle
  • CO and NO concentration measured using electrochemical sensors in accordance with EN 50545
  • Software developed in accordance with EN 61508 (SIL1)
  • Highly reliable – no moving parts
  • Combines visibility measurement with two different gas measurements
  • IP 6K9K enclosure rating thanks to a rugged stainless-steel housing
  • Fog compensation through integrated heating (option)
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  • Aluminum enclosure with anti-corrosion coating and high enclosure rating
  • Built-in lens heaters to prevent condensation or icing
  • Weather protection against snow, rain and dust clouds
  • Accessories (weather hood and mounting bracket) made of stainless steel
  • Sensitivity adjustment
  • Insensitive to ambient light
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The tunnel flow velocity measuring device for long-term operation
  • Very large measuring distances possible
  • Non-contact measurement
  • Extremely rugged components made of titanium, stainless steel, or die cast
  • Versions for very corrosive tunnel atmospheres
  • Determination of flow direction
  • No mechanical moving parts
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  • Large measuring range for visual range
  • Precipitation detector as an option
  • Contamination check
  • Minimum space requirements and low weight
  • Self-sufficient design possible with solar panel and battery
  • Rugged housing, also for salty air
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  • Automatic adjustment function (AutoAdjust)
  • Contamination check
  • Menu-driven operation via evaluation unit
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  • Very low detection limits for NO and NO2
  • Automatic function monitoring and self-adjustment
  • Very rugged design in stainless steel
  • Automatic beam alignment between sender/receiver unit and reflector
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Fully-automatic detection of overheated vehicle parts
  • Fully-automatic detection of overheated vehicles
  • Adjustable alarm thresholds for various vehicle zones
  • 3D visualization of the vehicles
  • Can be extended, for example, to include the detection of license plates, hazardous goods plates or overheight
  • Data transmission via TCP/IP interface
  • All-weather LiDAR and infrared technology
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Result 1 - 8 out of 11

At a glance

Let the innovation leader help you ensure tunnel safety

Added safety – fewer backups: These are the key requirements of traffic service providers. As the density of the traffic on our roads increases, the future is all about finding ways to increase the availability of tunnels while at the same time improving safety for road and tunnel users. For 60 years, SICK has been helping road and tunnel operators to take on this challenge, offering innovative products not only for measuring visibility and air quality in routine operation, but also for air flow measurement and smoke detection in emergency situations. Intelligent traffic sensors are absolutely fundamental to ensuring state-of-the-art traffic guidance technology.

Tunnel monitoring

Safe driving in tunnels – from start to finish

The portfolio of tunnel sensors from SICK is designed for urban tunnels, overland tunnels, and tunnels in rail and subway systems. Whether it be routine operation or emergency situations, SICK is your one-stop-shop for virtually all tunnel monitoring applications.

Measurements inside the tunnel

Air quality

Measurement of CO, NO, NO2 and visibility for ventilation control. By capturing exact measured values, monitoring the atmosphere inside the tunnel provides the basis for effective ventilation control.

Product recommendation: VISIC100SF, VICOTEC410, VICOTEC320

Early fire detection

Smoke detection for early fire detection. In the event of a fire inside a tunnel, every second counts: As fires manifest themselves in the form of smoke much earlier than heat, smoke detectors are able to detect fires in the very early stages of their development.

Product recommendation: VISIC50SF

Air flow

Monitoring of the air speed and direction for ventilation. The speed and direction of the air flow inside the tunnel have to be measured to control ventilation. In the event of an emergency, this is the most important measurement to enable the fans to be controlled.

Product recommendation: FLOWSIC200, VM400

Measurements before entering the tunnel

Overheight check

Detection of overheight vehicles. To protect the infrastructure, vehicles that are too high must be reliably detected and removed from the flow of traffic even before they enter the tunnel.

Product recommendation: HISIC450

Fog monitoring

Monitoring visual range to avoid accidents. To avoid accidents in fog, a maximum speed limit is set based on the measured visual range and indicated on variable-message signs.

Product recommendation: VISIC620

Overheating check

Avoiding fires. The VHD system detects overheated vehicles. This enables them to be stopped before they enter the tunnel.

Product recommendation: VHD

Condition monitoring

For tunnel sensors

The Monitoring Box from SICK provides an effective solution for monitoring and maintaining devices and sensors in tunnels. Device and sensor states can be monitored in real time, and undesired operational states predicted ahead of time. If required, every significant change to the device states is visualized concisely and clearly in a browser-based dashboard, thereby enabling the operating staff to intervene in a timely manner. This ensures the availability of critical device components.

Your benefits

Optimized maintenance through data analysis

By continuously monitoring the device state, it is possible to plan the maintenance deployments much more efficiently, e.g. grouping maintenance tasks. State-dependent maintenance also eliminates unnecessary servicing. The fault causes are known before an on-site service deployment needs to be carried out.

Predictive maintenance

Changes in the tunnel devices during a particular time period can be monitored and informative prognoses made. By processing and analyzing historical data, it is possible to predict the device state and the required maintenance tasks.

Evidence of compliance with standards and requirements

The states of the devices before and after interventions are documented, thereby making it easier to prove or document compliance with standards or requirements.

Efficient use of resources

Different maintenance tasks can be grouped depending on the status. You know which servicing tasks are required for which devices before you get to the device in the tunnel.

High availability

With the Monitoring Box from SICK, you can take timely action before a device failure occurs. This significantly increases the availability of the devices in the tunnel.

Increase in performance

You always operate your devices in the optimal performance range.

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