Animal deterrent apparatus

作者: Barry A. Burman

DOI:

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摘要: An apparatus for deterring animals from intruding into gardens, fields, yards, etc. has at least one sprinkler which produces an initial sudden jet of water to frighten or startle animal. The a sprinkler, preferably on is impulse type that series pulse sprays. connection line supply low voltage electrically operated shut-off valve provided in the with battery other power source. infrared proximity sensor senses presence such as powered by and opens turn sprinkler.

参考文章(1)
Chevreliere Charles Ayme De La, Radiation sensitive irrigation device ,(1964)