INOVA PeriNet liniear sensor | fence detection

The cable for electronic fence detection. The VibraTek linear sensor is a structure-borne sound sensor specially developed for the electronic protection of outdoor perimeters (e.g. fence or gate constructions). In combination with the PeriNet analyser module, it forms a reliable and economical solution for the detection and localization of intrusion and outbreak attempts.

New reference in the electronic outdoor perimeter security

The VibraTek sensor is a highly sensitive microphone cable that converts noise in the monitored construction into electrical signals. The sensor cable can also be easily and effortlessly added to existing gate and fence constructions. For new installations, we recommend the PeriNet triple wire mesh, which has been specially developed to accommodate VibraTek sensor cables. This protects the sensor cable from sabotage and vandalism and guarantees maximum detection security.

  • Highlights

    • Superior signal quality (high signal-to-noise ratio) for excellent detection performance
    • minimum false alarm rate, even in poor weather conditions
    • Easy integration of undetected areas (e.g. building fronts) into the detection length
    • Easy installation, especially in conjunction with the PeriNet triple wire mesh
    • Short offline times in case of vandalism or sabotage due to simple and quick repairs

  • Operation purpose

    The VibraTek sensor cable is used for the electronic anti-climbing barrier and break-in protection of fence constructions, e.g.

    • welded mesh
    • wire mesh fence (galvanized or plastic coated)
    • front grid fence
    • palisade fence
    • expanded metal fence
    • wooden fence

    including wall crown/anti-climbing barrieres made of barbed wire or barrier wire rolls and gate constructions, e.g.

    • pedestrian gates
    • swing gates


The VibraTek operating principle

VibraTek sensor cable
VibraTek sensor cable

The PeriNet linear sensor works according to the induction -principle. Flexible ceramic magnetic profiles generate a static magnetic field in the core of the sensor cable. Two precision conductors (blue) can oscillate freely within the generated magnetic field, inducing a voltage in the conductors. Thus the functionality corresponds to that of an active, linear induction generator.

When breaking through (cutting, burning, sawing) or climbing over a perimeter protection construction, sound waves are generated which propagate within the construction to be monitored (structure-borne sound). These are detected by the sensor cable and converted into electrical signals.

The induced signals represent an unaltered image of their causal mechanical oscillation. The electrical signals are analysed by the detection algorithm of the PeriNet analyser modules, natural environmental influences (e.g. wind, rain, hail) are filtered and intrusion attempts are reliably reported.

Integration of object accesses and undetected areas

Weak points in the security concept often occur in the perimeter access area. With the VibraTek linear sensor, object accesses, such as swing gates, can be easily integrated into the detection length. Even in the case of sliding gates, attempts to climb over can be reliably detected with a photoelectric barrier combination.

Some open-air areas do not require a perimeter protection structure to be continuously detected. Depending on the requirements, e.g. a building facade can already offer sufficient protection or a road or trench divides the external protection. The PeriNet linear sensor therefore offers the possibility of bridging such areas not to be detected with passive cable in order to resume the detection length afterwards.

Elektronisch überwachter Zaun-Drehflügeltor INOVA von Berlemann Torbau GmbH
Bildergalerie: Integration of single/double leaf swing gates and non-sensitive sections
Integration of single leaf swing gates
Elektronisch überwachter Zaun-Drehflügeltor INOVA von Berlemann Torbau GmbH

Swing gates can be easily and safely integrated into the monitoring section with a GateKit. For this purpose, a sensor cable loop is mounted on the gate wing, which is connected to the monitoring section via a spiral cable. The area under the swing gate is bridged with passive cable in order to continue the monitoring afterwards.

Bild 1 von 3
Integration of single/double leaf swing gates and non-sensitive sections
Elektronisch überwachter Zaun-Drehflügeltor INOVA von Berlemann Torbau GmbH

Double leaf swing gates require two GateKits. A separate VibraTek sensor cable loop is mounted on each gate leaf.

Bild 2 von 3
Integration of single/double leaf swing gates and non-sensitive sections
Elektronisch überwachter Zaun-Drehflügeltor INOVA von Berlemann Torbau GmbH

Frequently, selected intermediate sections (e.g. building facades, underpasses, ditches, etc.) are to be excluded from the detection length. With the PeriNet linear sensor, such areas can be bridged flexibly with passive cable in order to continue the detection length afterwards.

Bild 3 von 3

Your Contact Person

Christian Wald
Tel.: +49 163 4948-114
Fax: +49 5973 ­9481-50
EMail: