초록 ▼

A security system for monitoring movement of persons in a secured area including set openings which includes area and opening monitors, tag units and an alarm system. The tag unit has special end clamp members which securely clamp an attachment strap to a housing for attaching the unit to a person.

A security system for monitoring movement of persons in a secured area including set openings which includes area and opening monitors, tag units and an alarm system. The tag unit has special end clamp members which securely clamp an attachment strap to a housing for attaching the unit to a person. Tampering with the connection creates an alarm state. The tag unit includes a dual transmitter continuously transmitting very low frequency (VLF) signal and transmitting a very high frequency (VHF or UHF) signal only if the tag unit is tampered with. The opening monitor includes VLF receivers responsive to a VLF signal and transmitting an alarm signal to an opening alarm system to prevent unauthorized exit. Authorized personnel have a deactivation unit for timed receiver disabling for moving the person through the opening. The UHF transmitter is activated upon unauthorized tampering with the attached tag. A bank response alarm includes a plurality of distributed VHF or UHF receivers which responds to the VHF or UHF signal of any tag unit. A deactivation control is provided to authorized personnel to permit attachment and removal of the tag unit. Other interlocks may be provided including visual and/or audible alarms, tag identification and, data recording.

대표청구항 ▼

[ We claim:] [1.] A personal monitor for attachment to the limb of a person and having a size appropriately related thereto, comprising a molded outer small housing for abutting attachment to the person, a transmitting unit within said housing including a programmable memory establishing a transmiss

[ We claim:] [1.] A personal monitor for attachment to the limb of a person and having a size appropriately related thereto, comprising a molded outer small housing for abutting attachment to the person, a transmitting unit within said housing including a programmable memory establishing a transmission circuitry and an antenna adapted to transmit radio frequency signals, said transmitting unit having circuit contacts exposed on diametrically opposite side walls of said housing, an elongated strap member having opposite free ends, said housing having a first and second tubular opening including said opposite side walls for receiving of said free ends of said strap member, said tubular openings including clip members movable between a release position for insertion of said free ends and an engaged position securing said strap in abutting engagement with said housing side walls and said contacts, said strap member having at least one conductor embedded therein and spaced in accordance with said contacts and interconnecting with said contacts and thereby completing said transmission circuitry, a locking unit within said tubular openings and said clip members to secure said free ends of said strap member in engagement with said contacts, and said transmitting unit including a unique transmitter operable in response to release of said locking means to transmit a unique alarm signal.