TY - JOUR
AU1 - Simpson, D J
AB - PHYS. MED. BIOL., 1968, VOL. 13, YO. 3, 459-460 Instrumental Note D. J. SIRIPSON Department of Medical Physics, University of Aberdeen Received 29 January 1968 A requirement arose, in connection with experimental studies in cattle feeding, for a device which would establish a one-to-one correspondence bet'ween the available feeding t'roughs and the available animals in an enclosure such t'hat a given animal could feed only from a given trough. In t'his may the food consumed bv each animal could be controlled. Each trough was provided with a ga,te which had to be opened before food was available for the animal. Various methods were considered for achieving this end, and t'he final solution adopted was to have a separate transmit,ter associated wit'h ea'ch gate. Khen the transmitter was '' on " a relay mecha'nism kept the trough gat'e closed. n'hen the transmitter was " off " the gate was open. The particular animal select'ed Do feed from a given trough carried a small passive circuit, fixed at some convenient' place on it's head by a' light harness, tuned to the transmitter frequency. When the animal approached t'he correct' trough? t'he int'eraction between t'he tuned circuit and the transmit'ter loaded the 
TI - An Automatic Gate Selector Device for Cattle Feeding
JF - Physics in Medicine and Biology
DO - 10.1088/0031-9155/13/3/414
DA - 1968-07-01
UR - https://www.deepdyve.com/lp/iop-publishing/an-automatic-gate-selector-device-for-cattle-feeding-v0bsW7EaES
SP - 459
VL - 13
IS - 3
DP - DeepDyve
ER -