Abstract: 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.

Abstract: 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.

Abstract: A method and a system for controlling the operation of an energizer which delivers energy to a fence in the form of a succession of pulses, the energy or waveshape of each pulse is varied in a manner which is dependent on the amount of energy which is lost by the fence for at least one pulse which is applied to the fence.

Abstract: An electric fence energizer which includes a pulse generator which produces a bi-polar pulse train and a control circuit which applies a mono-polar pulse, or a bi-polar pulse, derived from the pulse train to the fence in response to a load condition on the fence.

Abstract: A method and a system for controlling the operation of an energiser which delivers energy to a fence in the form of a succession of pulses, the energy or waveshape of each pulse is varied in a manner which is dependent on the amount of energy which is lost by the fence for at least one pulse which is applied to the fence.

Abstract: An electric fence energiser which includes a pulse generator which produces a bi-polar pulse train and a control circuit which applies a mono-polar pulse, or a bi-polar pulse, derived from the pulse train to the fence in response to a load condition on the fence.