US 5,857,434 A · Identity and cow estrus indicator

Abstract

A device for transmitting data from a movable unit such from a domestic animal contains a conventional passive transponder unit (1) which is coupled to an antenna (3). The transponder (1) comprises means (23) for storing electrical energy comprised in electrical voltage pulses received on the antenna (3) and can by means of the stored energy transmit on the antenna (3) pulse sequences carrying information such as identification data for the device. Further, in the device a permanent electrical current source such as a lithium battery (9) is provided, which powers a processor (7). The processor (7) receives signals from a motion sensor (15) and is coupled to a transmitter (11) having an antenna (13) and can activate the transmitter (11) for transmitting radio signals having a good range, when the motion detector (15) signals an increased activity, such as for a non-milking cow during the estrus period.

Claims5

Dependent claims

A method for monitoring a movable unit, which can take different states, at least a first normal state and a second special state, in particular for monitoring a domestic animal and the movement intensity thereof, including the steps of:

providing the unit with a sensor for the different states;
transmitting wirelessly, when the unit is located in the neighborhood of a fixedly arranged station, from the unit information in regard of the identity of the unit;
always transmitting wirelessly, when the sensor detects the second special state, information both in regard of the identity of the unit and of the fact that the unit now takes the second state.

Dependencies are inferred from the claim text.

Identity and cow estrus indicator

Life of this patent

Identity and cow estrus indicator

Life of this patent

Abstract

Claims5