System and a method for real time detection of the position and behavior of a plurality of animals
First Claim
1. A system for real time detection of the position of a plurality of animals held in a limited area, the system comprising:
- a fixed reference radio transmitter tag disposed in the limited area;
a plurality of radio receiver/transmitter animal tags capable of being carried by animals moving in the limited area;
a sensor, in wireless communication with the fixed reference radio transmitter tags and the radio receiver/transmitter animal tags, based on a time or a phase delay of received signals at the sensors from the radio receiver/transmitter animal tags;
a position detector comprising;
a computer that calculates an optimal placement of the sensor for communicating with the radio receiver/transmitter animal tags and the fixed reference radio transmitter tag in the limited area; and
for calculating an optimal placement of the fixed reference radio transmitter tag, and then receives a signal from the fixed reference radio transmitter tag to calibrate the system and then measure a position of at least one of the radio receiver/transmitter animal tags.
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Accused Products
Abstract
The present invention relates to a system and a method for real time detection of the position and behavior of a plurality of animals which system comprises radio transmitter tags carried by the animals, where sensors receives signal from the tags, which system based of time delay of received signals at the sensors from the tags, perform calculation the position of the animals. It is the first object of the invention to achieve real time position of animal in a limited area. The object can be fulfilled by letting the system comprise a computer bases real time position calculation of the position of the animals, which system comprises a plurality of fixed reference radio transmitter tags, which system continuously based of received signal from the reference tags performs a calibration of the measured position of the animals. By using fixed reference radio transmitters together with tags that are performing equal radio transmission functions, it is possible by fixed placed sensors to receive first signals from the animal tags, but also signals from the fixed reference radio transmitter tags to perform an automatic calibration of all received signals from animals.
22 Citations
13 Claims
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1. A system for real time detection of the position of a plurality of animals held in a limited area, the system comprising:
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a fixed reference radio transmitter tag disposed in the limited area; a plurality of radio receiver/transmitter animal tags capable of being carried by animals moving in the limited area; a sensor, in wireless communication with the fixed reference radio transmitter tags and the radio receiver/transmitter animal tags, based on a time or a phase delay of received signals at the sensors from the radio receiver/transmitter animal tags; a position detector comprising; a computer that calculates an optimal placement of the sensor for communicating with the radio receiver/transmitter animal tags and the fixed reference radio transmitter tag in the limited area; and
for calculating an optimal placement of the fixed reference radio transmitter tag, and then receives a signal from the fixed reference radio transmitter tag to calibrate the system and then measure a position of at least one of the radio receiver/transmitter animal tags. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for configuration and operation of an animal position detector system for detecting positions of a plurality of animals, with each animal carrying at least one radio receiver/transmitter tag, the method comprising the following steps:
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a;
defining at least one limited area for the animals to be detected in the animal position detection system,b;
dividing the limited area into a number of sub areas,c;
calculating a number of sensors for monitoring the limited area;d;
calculating an optimal position for each sensor;e;
defining a number of fixed reference radio receiver/transmitter tags;f;
calculating an optimal position for each fixed reference radio receiver/transmitter tag;g;
installing each sensor and each fixed reference radio receiver/transmitter tag at its calculated optimal position within the area and sub area;h;
performing a calibration test of the system by sensing signals from the fixed reference radio receiver/transmitter tag;i;
calculating an actual position of at least one animal carrying a radio receiver/transmitter tag; andj;
calculating activity of at least one animal. - View Dependent Claims (11, 12, 13)
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Specification