An enclosure system including barrier segments and at least one electrical cable coupled to each barrier segment. Each electrical cable having electrical connectors disposed at each of a first terminus and a second terminus of the electrical cable. Each electrical connector is releasably coupled to another electrical connector of an adjacent electrical cable to form at least one continuity loop through the barrier segments. Each continuity loop includes two electrical terminal ends disposed at free ends of the continuity loop. A comparator system is coupled to a respective continuity loop and is configured to generate a closed loop signal when electrical current flows to the comparator system from one of the two electrical terminal ends of the respective continuity loop, and an open loop signal when electrical current ceases to flow to the comparator system from the one of the two electrical terminal ends of the respective continuity loop.

Method of detecting break-ins in an intrusion-detection barrier which comprises an array of sensors in signal communication with one another and connected to a control unit; said method comprising the steps of: calibrating at least one sensor of the array, detecting an external forcing having oscillation forcing frequencies applied to the intrusion-detection barrier, generating an alarm signal when the external forcing is detected; the method being characterized in that the step of calibrating comprises the sub-steps of: applying mechanical stress to said intrusion-detection barrier to cause said intrusion-detection barrier to resonate at its characteristic frequencies; creating a digital filter for the sensor configured to identify the characteristic frequencies; the step of detecting comprising the sub-steps of: applying the filter to identify the forcing frequencies applied to the intrusion-detection barrier, selecting at least one energy threshold value, calculating an energy value for each of the forcing frequencies, comparing each energy value with the energy threshold value, the step of generating the alarm signal comprising the sub-step of generating the alarm signal when at least one energy value is greater than the energy threshold value.

Cabling device for a fence with posts (6), wherein the cabling device comprises several duct elements (1, 2) which are provided to form a first duct which connects to one side of the fence and into which cables (14) extend, wherein these duct elements (1, 2) comprise linear duct elements (1), which are provided to extend between two posts (6) and adapting duct elements (2) which are provided to connect adjacent linear duct elements (1) which are separated by a said post (6), by extending around the said post (6).

A suicide preventing fence including: a plurality of pole parts provided standing upright from the ground surface at predetermined intervals, and a plurality of linking parts which are formed in the shape of pipes and horizontally link the spaces between the pole parts. The fence further includes rotating bodies which are formed with an internally hollow abacus bead shape and are provided on the outer circumferential surfaces of the linking parts, and bearings which are provided on the outer circumferential surfaces of the linking parts, positioned in the centers on the insides of the rotating bodies. The fence further includes rotating bolts which are provided on the outer circumferential surfaces of the linking parts and are inserted in through passing regions on both side surfaces of the rotating bodies so as to rotate together with the rotating bodies.

Exemplary approaches herein provide a barbed tape and security sensor assembly. In one approach, a barbed tape and security sensor assembly includes a vibration detection system including a sensor wire and a sensor housing, the sensor wire configured to be secured to a barrier for detecting vibration in the barrier. The barbed tape and security sensor assembly further includes a barbed tape directly coupled to the sensor housing or the sensor wire by a bracket.

A sensor for an electric fence barrier system comprising at least one electric fence wire is provided, the sensor comprising a mechanical sensing component to measure deflection of the electric fence wire to which the sensor has been fitted, and to produce a corresponding electrical deflection signal, an electrical activity monitoring component to measure the electrical activity on the electric fence wire to which the sensor has been fitted, and to produce an electrical activity signal, and a controller to receive and process the electrical deflection signal and the electrical activity signal, and to generate an alarm if either or both of the measured deflection or the electric activity exceeds predetermined values, and/or to communicate the electrical deflection and electrical activity signals to a remote location.

A security sensor is provided which has a container body and a signal acquisition and processing module housed in the container body. The signal acquisition and processing module has a piezoelectric transducer configured to convert a mechanical stress to which the piezoelectric transducer is subjected into a first electrical signal, an accelerometric transducer configured to convert an acceleration to which the accelerometric transducer is subjected into a second electrical signal, and processing unit operatively connected to the piezoelectric transducer and to the accelerometric transducer for receiving the first and second electrical signals. The accelerometric transducer is a MEMS accelerometric transducer.

One or more techniques and/or systems are disclosed for warning workers in a work zone of a potential intrusion by a vehicle. The example system can comprise a master device, coupled with one or more boundary markers using a tripwire. When the trip wire, and/or one of the boundary markers, is impacted with sufficient force, the tripwire is disengaged from the master device. Once disengaged, the master device can transmit a wireless alert signal to one or more portable alerter, such as worn by workers. The portable alerters can receive the signal and activate a personnel alert, such as an audible, visual, or other sensory alert. In this way, an alert is provided to personnel working in an established work zone that a potentially threatening vehicle has penetrated the work zone perimeter. This type of alert may provide the personnel the vital seconds needed to move to safety.

A cable pull switch includes a polychotomous sensor configured to provide a reading of at least one of a plurality of values, the reading corresponding to a tension on a pull cable or a linear displacement of an end of a pull cable. A processor coupled to the polychotomous cable pull sensor configured to determine a rate of change of the value of the reading from the sensor and determine an occurrence of a cable pull event, the determination based on the determined rate of change of the value, and determine whether the rate of change of the value of an electrical resistance through the polychotomous cable pull sensor is below a threshold rate of change value, and adjust an upper pull threshold value to a new upper pull threshold value that is based on a present reading of the value of the electrical resistance through the strain gauge.

A biosensitive perimeter includes a support, an excitation wire, an induction wire, a lead wire, a pulse signal generator, a triode, a step-up transformer, a processor, and an alarm; wherein, said excitation wire and said induction wire pass through a plurality of supports in parallel, and said excitation wire is used to form an induced electric field, and said induction wire is located in said induced electric field to sense the change information of said induced electric field caused by the biological magnetic field of a human body, and to transmit the sensed information of the induced electric field to the processor that is used to receive the information of the induced electric field sensed by the induction wire, and to determine whether the alarm is required to be activated; and said excitation wire and said induction wire are arranged in parallel.