Animal containment system

摘要

An animal confinement system comprising an emitter for transmitting coded near infrared energy, a receiver carried by an animal to be contained for receiving the transmitted coded near infrared energy, including an infrared receiving diode and, a comparator for conditioning the output of the infrared receiving diode. A predetermined threshold is established for the comparator which will cause the output of the comparator to go low when the output of the infrared receiving diode is received.