Perimeter Security For Critical Infrastructure Locations

Perimeter security solutions at locations with critical infrastructures are essential to identify and deter potential intruders as well as to better assess the scenario and improve responsiveness. They are also useful for securing remote and unmanned locations and avoiding operator fatigue by minimizing false positives.

Perimeter security at the property boundary

At most locations, a digestive tract, well-maintained security fence, forms the first line of defense. However, determined intruders can cut, step over, lift, or otherwise bypass the fence in seconds. An additional Boundary Breach Discovery System (PIDS) increases the effectiveness of the existing fence by offering valuable detection functions. By connecting to the site’s alarm system, the PIDS system can notify security personnel outside the site of the intrusion and activate automatic deterrent mechanisms, such as activating lights on the fence line, controlling PTZ cameras to the appropriate location on the boundary or use of public address systems for acoustic warnings.

Sensors mounted on the fence reliably detect

The most common approach to protecting fences is to use fence-mounted sensors to transform the existing fence into a smart fence. They consist of a fiber optic cable, a coaxial cable or a number of accelerometers that are attached directly to the fence and capture the unique vibrations that occur when attempted break-ins occur. Modern systems use a variety of sensor technologies (for example reflectometry in the time domain or accelerometers) and offer extremely useful functions such as environmental compensation, precision distance measurement, redundancy when cutting the sensor path and power supply directly via the sensor cable. In addition, you can combine the possibilities of detecting events with the uniform illumination of the perimeter in one system, which also improves the image quality in any camera systems that may be available. To achieve maximum performance of the sensors mounted on the fence, they must be installed and calibrated according to the manufacturer’s instructions, and the fence itself must be properly maintained.

Sensor fusion combines the best of two worlds

Both fence-mounted sensors and video analytics are highly developed and mature technologies, but solutions that can further improve public safety (and have the potential to improve operational and Lower maintenance costs) deserve attention. The concept of sensor fusion technology is not new – the basic premise of combining several sensors with one another, benefiting from their strengths and at the same time eliminating their weaknesses has been discussed for many years. In the past, passes away meant a Boolean logic integration between two systems (usually a fence sensor and video analysis for tracking people or a fence sensor and an underground sensing unit, which were installed identically). This approach can certainly help reduce unwanted alarms caused by well-defined, predicted events. However, this approach can also lead to complex problems that need to be solved:

Photo: Senstar Also part of the perimeter security at Kritis: Person recognition by means of video analysis with a thermal camera.

Introduction of intelligence into the sensor fusion system

A better approach is to introduce intelligence into the sensor fusion system. Through the synthesis of low-level data from the individual systems, information that is much better usable can be generated. Real sensor fusion is more than a simple Boolean logic integration and analyzes real-time data along with historical, location, environmental and classification data before an alarm system is triggered. When signal reaction data is synthesized between the sensors of fence and video analysis systems, annoying alarms, e.g. triggered by wind or small parts flying around, as well as non-threatening human activities, can be practically eliminated. Pass away high probability of recognition of the solution is retained.

Pass away operators of critical infrastructures have real sensor fusion advantages

Avoid unwanted alarms and Realize highest detection probability

Even if advances in the detection of intruders and in video analysis continue to offer interesting new possibilities, false positives will unfortunately remain a problem. Pass away sensor fusion offers the opportunity to avoid unwanted alarms and at the same time to maintain the highest detection probability. To be able to use the advantages of sensor fusion, providers of security systems must work closely with manufacturers in the security sector, have the internal ability to smartly synthesize multi-sensor data at a low level, to achieve usable results. Pass away from it resulti The higher system reliability enables security personnel to concentrate on what is most important, namely a quick and efficient response to real security threats.