| CPC A01K 15/023 (2013.01) | 19 Claims |
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1. An electronic fence device, comprising:
a transmitter, arranged to preset a fence range or a restricted range, wherein each of the fence range and the restricted range is set by taking the transmitter as a range center;
at least one receiver, configured to be worn on a pet;
wherein, the transmitter comprises a locating module; each of the at least one receiver comprises a tag module; the locating module and the tag module are configured to exchange measurement signals therebetween to monitor a location of the pet in real time;
the transmitter is configured to compare the location of the pet with the fence range or the restricted range; in response to the pet being located out of the fence range or entering the restricted range, the transmitter is configured to provide a feedback to the receiver to give a warning to the pet;
wherein, the measurement signals are UWB signals; the UWB signals comprise at least a first UWB signal and a second UWB signal;
the locating module is configured to transmit the first UWB signal to the tag module and to receive the second UWB signal transmitted from the tag module;
the tag module is configured to receive the first UWB signal and to transmit the second UWB signal;
the locating module comprises a processor unit, the processor unit is configured to collect and calculate a time of flight of the first UWB signal, a time of flight of the second UWB signal, and an arrival phase difference, so as to determine the location of the pet.
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