Proximity monitoring and locating system
First Claim
1. A proximity monitoring and locating system comprising:
- a wearable unit including;
a transmitter configured to send a signal,a receiver, anda transponder outputting a transponder signal when activated;
a proximity detector including;
a receiver for receiving the wearable unit transmitter signal,a processing subsystem configured to signal an alert if the wearable unit transmitter signal strength is below a pre-established minimum, anda tracking subsystem configured to assist in locating the wearable unit based on the signal strength of the wearable unit transmitter signal;
a control subsystem responsive to an indication that the alert has been signaled, the control subsystem including;
an RF transmitter configured to transmit a transponder activation signal,an RF antenna network for relaying the transponder activation signal to the receiver of the wearable unit to activate the transponder thereof; and
a tracking unit including a receiver configured to receive the transponder signal of the wearable unit to locate the wearable unit.
20 Assignments
0 Petitions
Accused Products
Abstract
A combined proximity monitoring and locating system including a wearable unit, a proximity detector, and a control subsystem. The proximity detector includes a receiver for receiving the wearable unit transmitter signal, a processing subsystem configured to signal an alert if the wearable unit transmitter signal strength is below a pre-established minimum, and a tracking subsystem configured to assist in locating the wearable unit based on the signal strength of the wearable unit transmitter signal. A control subsystem is responsive to an indication that the alert has been signaled. The control subsystem includes an RF transmitter configured to transmit a transponder activation signal, and an RF antenna network for relaying the transponder activation signal to a receiver of the portable unit to activate the transponder thereof. A tracking unit includes a receiver configured to receive the transponder signal of the wearable unit to locate the wearable unit.
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Citations
33 Claims
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1. A proximity monitoring and locating system comprising:
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a wearable unit including; a transmitter configured to send a signal, a receiver, and a transponder outputting a transponder signal when activated; a proximity detector including; a receiver for receiving the wearable unit transmitter signal, a processing subsystem configured to signal an alert if the wearable unit transmitter signal strength is below a pre-established minimum, and a tracking subsystem configured to assist in locating the wearable unit based on the signal strength of the wearable unit transmitter signal; a control subsystem responsive to an indication that the alert has been signaled, the control subsystem including; an RF transmitter configured to transmit a transponder activation signal, an RF antenna network for relaying the transponder activation signal to the receiver of the wearable unit to activate the transponder thereof; and a tracking unit including a receiver configured to receive the transponder signal of the wearable unit to locate the wearable unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A proximity monitoring and locating system comprising:
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a wearable unit including; a transmitter configured to send a signal, a receiver, and a transponder outputting a transponder signal when activated; a proximity monitor including; a handheld tracking receiver for receiving the wearable unit transmitter signal, a base unit configured to cradle the handheld tracking receiver, and a processing subsystem configured to monitor the wearable unit transmitter signal strength; a control subsystem including; an RF transmitter configured to transmit a transponder activation signal, an RF antenna network for relaying the transponder activation signal to the receiver of the wearable unit to activate the transponder thereof; a tracking unit including a receiver configured to receive the transponder signal of the wearable unit to locate the wearable unit; and a communication link between the proximity monitor and the control subsystem for issuing an alert if the signal strength of the wearable unit transmitter is below a pre-established minimum so that the handheld tracking receiver can be used in an attempt to locate the wearable unit before the transponder thereof is activated and the tracking unit is used to locate the wearable unit.
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17. A proximity monitoring and locating system comprising:
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a wearable unit including; a transmitter configured to send a signal, a receiver, and a transponder outputting a transponder signal when activated; a proximity detection subsystem configured to determine if the wearable unit is present in a predetermined area; a control subsystem responsive to an indication that the proximity detection subsystem had determined that the wearable unit is not within the predefined area, the control subsystem including; an RF transmitter configured to transmit a transponder activation signal, and an RF antenna network for relaying the transponder activation signal to the receiver of the wearable unit to activate the transponder thereof. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification