Personnel monitoring tag
First Claim
1. A method for monitoring individual persons of a plurality of persons, comprising the steps of:
- transmitting information signals at random times from individual ones of a plurality of tags to at least one master transceiver, the individual ones of the plurality of tags each to be worn by a respective person, the information signals transmitted from the individual tags corresponding to whether the tag is in use, and wherein a probability that an individual one of the plurality of tags will transmit an information signal during a period of time that none of the other ones of the plurality of tags are transmitting information signals is represented by Ptx, where;
##EQU5## and where ton represents a duration of an information signal transmission;
toff represents an average time interval between chronological information signal transmissions of interest;
n represents the number of the other ones of the plurality of tags, and m represents a number of transmissions attempted during the time period;
in response to the at least one master transceiver receiving an information signal to an associated confirmation device; and
within the confirmation device, in response to receiving an information signal from the master transceiver, confirming that the person corresponding to the tag generating the information signal is accounted for.
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Accused Products
Abstract
A method for accounting for individual persons of a plurality of persons based upon random times that occur as a function of a first specified time interval, and a random interval monitoring system that operates in accordance with the method to report information regarding the presence of both desired and undesired conditions affecting a person. The method includes a first step of transmitting information signals based upon random times from individual ones of a plurality of tags each to be worn by respective persons to at least one of at least one master transceiver and at least one transceiver. The information signals transmitted from each tag correspond to whether a tag is being worn and to certain activities or a lack thereof of sensors in electrical communication with the tag including pressure and motion sensing equivocated to actually wearing the tag.
273 Citations
27 Claims
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1. A method for monitoring individual persons of a plurality of persons, comprising the steps of:
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transmitting information signals at random times from individual ones of a plurality of tags to at least one master transceiver, the individual ones of the plurality of tags each to be worn by a respective person, the information signals transmitted from the individual tags corresponding to whether the tag is in use, and wherein a probability that an individual one of the plurality of tags will transmit an information signal during a period of time that none of the other ones of the plurality of tags are transmitting information signals is represented by Ptx, where;
##EQU5## and where ton represents a duration of an information signal transmission;
toff represents an average time interval between chronological information signal transmissions of interest;
n represents the number of the other ones of the plurality of tags, and m represents a number of transmissions attempted during the time period;in response to the at least one master transceiver receiving an information signal to an associated confirmation device; and within the confirmation device, in response to receiving an information signal from the master transceiver, confirming that the person corresponding to the tag generating the information signal is accounted for. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A monitoring system having a self monitor to verify usage, the system comprising:
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a housing wearable by a person; a transmitter disposed within the housing; a pressure sensor in electrical communication with the transmitter and disposed within the housing to extend therefrom and be in contact with the person when the housing is worn to thereby impose pressure on the sensor and create an electrical signal, said pressure sensor communicating to the transmitter a first electrical signal comprising the presence or absence of said pressure; a motion sensor in electrical communication with the transmitter and disposed within the housing to detect motion thereof, said motion sensor detect motion thereof, said motion sensor communicating to the transmitter a second electrical signal comprising the presence or absence of said motion; a ground connection sensor in electrical communication with the transmitter and disposed within the housing, said ground connection sensor having a ground connector leading therefrom and attachable to a ground site, said ground site having a ground connection confirmation signal transferable through the ground connector to the ground connection sensor to detect ground connection of the device and communicate to the transmitter a third electrical signal comprising the presence or absence of said ground connection; and at least one receiver capable of receiving transmissions of pressure, motion, and ground connection information transmitted by the transmitter. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A personal monitor having a self monitor to verify usage, the monitor comprising:
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a housing wearable by a person; a transmitter disposed within the housing; a pressure sensor in electrical communication with the transmitter and disposed within the housing to extend therefrom and be in contact with the person when the housing is worn to thereby impose pressure on the sensor and create an electrical signal, said pressure sensor communicating to the transmitter a first electrical signal comprising the presence or absence of said pressure; a motion sensor in electrical communication with the transmitter and disposed within the housing to detect motion thereof, said motion sensor communicating to the transmitter a second electrical signal comprising the presence or absence of said motion; and a ground connection sensor in electrical communication with the transmitter and disposed within the housing, said ground connection sensor having a ground connector leading therefrom and attachable to a ground site, said ground site having a ground connection confirmation signal transferable through the ground connector to the ground connection sensor to detect ground connection of the device and communicate to the transmitter a third electrical signal comprising the presence or absence of said ground connection.
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Specification