Electronic fence transmitter for self-adjusting the receiving distance
First Claim
1. An electronic fence transmitter for self-adjusting the receiving distance comprising:
- a fence wire buried in a yard along the boundary of a confined area within which a pet may move around freely;
a digital-analog (D/A) converter for gradually increasing the voltage applied to the fence wire;
a wire voltage amplifier for amplifying voltage outputted from the D/A converter and for applying to the fence wire;
a data amplifier for amplifying data signal that is applied to the fence wire from a controller;
a power amplifier for power-amplifying a data signal that is outputted from the data amplifier;
a voltage detector that is connected in series to the fence wire;
a comparator for comparing the detected voltage of the voltage detector with a reference voltage; and
a controller by which the D/A converter is controlled according to a signal inputted from the comparator and a voltage applied to the fence wire increasing gradually until a value of the detected voltage is larger than the value of the reference voltage.
1 Assignment
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Accused Products
Abstract
An electronic fence transmitter for self-adjusting the receiving distance is comprised of a fence wire buried in a yard, a voltage detector that is connected in series to the fence wire and a comparator for comparing the detected voltage of the voltage detector with a reference voltage. A voltage applied to the fence wire is automatically adjusted according to a signal inputted from the comparator and increasing gradually until a value of the detected voltage is larger than the value of the reference voltage. Accordingly, a distance for receiving the signal from the fence wire is set as constant without regard to an installation length or area of fence wire.
27 Citations
6 Claims
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1. An electronic fence transmitter for self-adjusting the receiving distance comprising:
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a fence wire buried in a yard along the boundary of a confined area within which a pet may move around freely; a digital-analog (D/A) converter for gradually increasing the voltage applied to the fence wire; a wire voltage amplifier for amplifying voltage outputted from the D/A converter and for applying to the fence wire; a data amplifier for amplifying data signal that is applied to the fence wire from a controller; a power amplifier for power-amplifying a data signal that is outputted from the data amplifier; a voltage detector that is connected in series to the fence wire; a comparator for comparing the detected voltage of the voltage detector with a reference voltage; and a controller by which the D/A converter is controlled according to a signal inputted from the comparator and a voltage applied to the fence wire increasing gradually until a value of the detected voltage is larger than the value of the reference voltage. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification