Movement monitor

Claim 2

A proximity monitoring system for detecting and individually identifying proximity of an object or person, and comprising; a central information processor, and processor signal receiver means connected thereto; a plurality of remote detector modules adapted to be placed in various locations at a distance from the information storage unit, each having first module transmitter means for communicating with such storage unit, and having a second module transmitter means, and module receiver means, and, a plurality of individual personalized portable identifier units, each identifier unit comprising a continuously activated identifier receiver, a coded signal identifier transmitter which is normally de-activated, a battery pack, and switch means operated by the identifier receiver in response to a signal from a second module transmitter means, to switch the battery on to activate the identifier transmitter, for emitting a personalized coded identification signal to such module receiver means.

Claim 3

A proximity monitoring system as claimed in claim 1 wherein the personalized portable identifier unit is contained in a wrist band which is attachable to the person.

Claim 4

A proximity monitoring system as claimed in claim 1 in which the detector modules are programmed whereby such first module transmitter means emits coded condition signals at pre-determined time intervals in sequence, to the prccessor receiver means in such central unit, whereby to monitor the condition and operability of each detector module at pre-determined time intervals.

Claim 5

A proximity monitoring system as claimed in claim 1 whereir the first module transmitter means of each detector module emits a coded identification signal identifying its own location, and in addition, retransmits the coded information received from the personalized portable unit to the processor signal receiver means, whereby the central information unit receives a composite signal identifying the detector module, and also individually identifying the object of person located by the detector module.

Claim 6

A proximity monitoring system as claimed in claim 1 wherein such personalized portable identifier unit comprises a receiver, and a decoder, such receiver being connected to such decoder which is in turn connected to such switch means, and further including battery means connected continuously to such receiver and such decoder and to such switch means, and further including a digital encoder, connected in turn to a pulse code modulator, which is in turn connected to such transmitter means, wherein such switch means is connected to such encoder and such modulator and such transmitter means, whereby the same will be activated by said battery power as soon as such switch means is switched on by said receiver and decoder.

Claim 7

A proximity monitoring system as claimed in claim 5 wherein such a remote detector module comprises a first module transmitter means having a timer, which is in turn connected to a standard test encoder, which is in turn connected to an intermittent test transmitter, which is operable to deliver a test signal to such central information processor, and further includes a battery switch encoder which is in turn connected to a detector transmitter, which is in turn connected to antenna means, for continuously emitting a "switch on" signal to the receiver of any portable identifier unit within the proximity of such detector module, and such detector module further including a receiver, which is in turn connected to an identifier unit signal demodulator, which is in turn connected to signal transmission means, and having a module I/D encoder which is in turn connected to such signal transmission means and further having interrupt encoder means which is also connected to such signal transmission means, and such receiver means in such detector module being further connected to such intermittent test transmitter within such detector module, whereby such module receiver means may receive either a signal from a portable identifier unit, or a test signal from its own intermittent test signal encoder, and will then be responsive thereto to deliver either a signal containing the module I/D, and the identity of the portable identifier unit in its proximity, or the module I/D and its intermittent test signal, through such signal transmission means to such central information processor.