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US 5,307,763 AGranted
Restricted area alarm system
OwnerDavid L. Arthur, David S. Pohlmaninventors
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OwnerDavid L. Arthur, David S. Pohlmaninventors
Estimating the term…
A restricted area alarm confinement system includes a loop antenna for placement about the border of an area within which a child or other person is desired to be confined, or excluded from, a control panel for recording a voice command in the parent's voice, and means for generating an RF signal encoded with said prerecorded voice command for transmission over said antenna. A transceiver is mounted to a harness or other support for attachment to the child such that as the child approaches the antenna the parent's voice command is received from the antenna and announced to the child to encourage him to withdraw from the border. A threshold level detector detects when the child approaches even closer to the antenna and the transceiver includes a transmitter section for transmitting a warning signal to a beeper/receiver held by the parent. The control panel further includes monitoring circuits for monitoring the integrity of the loop antenna and the AC power supply. If a break is detected in the loop antenna, or if the control panel switches to its included battery backup, a display provides a visual message and an announcement is made over a speaker in the control panel to alert the operator that a system failure has occurred.
A restricted area alarm system, said restricted area having a boundary associated therewith, the system including:
A restricted area alarm system, the system including:
In a restricted area alarm system including a loop antenna oriented about a boundary, said antenna having means for broadcasting a first signal which is received by a receiver attached to a subject, the improvement comprising a control panel for generating and supplying a second signal to said antenna and means for monitoring said antenna for a failure to conduct said second signal, and means for indicating said failure to an operator.
In a restricted area alarm system including a loop antenna oriented about a boundary, said antenna having means for broadcasting a signal which is received by a receiver attached to a subject, the improvement comprising a control panel, said control panel having means for generating a prerecorded voice encoded command for broadcasting over said loop antenna so that said subject hears said prerecorded voice encoded command as it moves near the loop antenna.
In a restricted area alarm system, said system including an antenna for defining an area within which a subject is desired to be confined, a transmitter for generating a signal for broadcast over said antenna, and a receiver adapted for attachment to said subject, the improvement comprising means for announcing a pre-recorded spoken command as said subject moves within a predetermined distance of said antenna so that said signal activates said receiver.
Dependencies are inferred from the claim text.