| 摘要 |
The invention refers to a device for an electric fence. The device includes an electric unit (1) which is connectable to an electrically conducting fence (2) and which includes a voltage generator (4) arranged to apply a relatively high electric voltage to said fence (2). Furthermore, the device includes a proximity detector (5), which is arranged to sense a state at which an animal is at least in contact with or in the proximity of said fence (2), and a control unit (6), which is connected to the voltage generator (4) and the proximity detector (5) and arranged to activate the voltage generator (4) to apply said relatively high electric voltage to said fence (2) in response to said state. The proximity detector (5) is arranged to detect said state by sensing an electric parameter, which substantially depends on the capacitance between said fence (2) and ground.
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