Patent ID: 9640059
Date: 2017-05-02
CPC Classifications: G08B

Claim:
1. A hygiene monitoring system for monitoring hygiene standards compliance in a facility, the hygiene monitoring system utilizing only radio frequency (RF) signals and comprising a surveillance network including a monitoring unit, a plurality of fixed network units, and a plurality of mobile network units; each of said plurality of mobile network units including a transmitter for transmitting a first identification signal and a second identification signal, the first identification signal transmitted periodically and the first identification signal particular to a position of an individual associated with one of said plurality of mobile network units, the second identification signal transmitted sporadically and the second identification signal resultant from an action performed by the individual associated with the one of said plurality of mobile network units; said surveillance network further comprising the plurality of fixed network units dispersed throughout the facility, each of said plurality of fixed network units including a transceiver to receive the first identification signal and the second identification signal from one or more of said plurality of mobile network units and transmit the first identification signal and the second identification signal to said monitoring unit; said each of said plurality of mobile network units and said each of said plurality of fixed network units together forming a wireless personal area network (WPAN); said monitoring unit further comprising a receiver for receiving the first identification signal and the second identification signal, an accessible memory for storing the first identification signal and the second identification signal, and a processor to analyse the first identification signal and the second identification signal in accessible memory and generate a hygiene standards compliance profile for the particular individual associated with said each of said plurality of mobile network units; said each of said plurality of fixed network units further comprises a sensor to determine radio frequency signal strength data of each first identification signal received from said each of said plurality of mobile network units, for onward transmission of radio frequency signal strength data to said monitoring unit along with the corresponding first identification signal; said processor includes means to determine the position of said each of said plurality of mobile network units from the radio frequency signal strength data of each mobile unit received from two or more said plurality of fixed network units; and said monitoring unit includes means to access a floor plan layout of the facility and illustrate on the floor plan layout a point representing the first identification signal over time of each of said plurality of mobile network units to obtain a plot of a plurality of points representing a movement pattern of each mobile network unit, the movement pattern of each mobile network unit included in the hygiene standards compliance profile.