PEDOBAROGRAPHIC BIOMETRIC SYSTEM

• US 20120086550A1
• Filed: 02/18/2010
• Published: 04/12/2012
• Est. Priority Date: 02/24/2009
• Status: Abandoned Application

• Current Assignee: Donald Joseph Leblanc, Julia Petruescu, Paul A. Bennett
• Original Assignee: Donald Joseph Leblanc, Julia Petruescu, Paul A. Bennett
• Inventors: LeBlanc, Donald Joseph, Petruescu, Julia, Bennett, Paul A.
• Application Number:
  US13/202,967
• Publication Number:
  US 20120086550A1
• Time in Patent Office: Days
• US Class Current: 340/5.82
• CPC Class Codes: A61B 5/1038 Measuring plantar pressure during gait
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/112 Gait analysis
• CPC Class Codes: A61B 5/117 Identification of persons methods or arrangements for recognising patterns, e.g. fingerprints, G06F18/00, G06V40/00; identification of persons by analysing their voice or speech G10L17/00
• CPC Class Codes: A61B 5/6804 Garments; Clothes
• CPC Class Codes: A61B 5/6805 Vests
• CPC Class Codes: A61B 5/6807 Footwear
• CPC Class Codes: G06F 2218/00 Aspects of pattern recognition specially adapted for signal processing
• CPC Class Codes: G06V 40/25 Recognition of walking or running movements, e.g. gait recognition
• CPC Class Codes: G07C 9/37 using biometric data, e.g. fingerprints, iris scans or voice recognition
• CPC Class Codes: G08B 21/0261 System arrangements wherein the object is to detect trespassing over a fixed physical boundary, e.g. the end of a garden
• CPC Class Codes: G08B 21/0275 Electronic Article Surveillance [EAS] tag technology used for parent or child unit, e.g. same transmission technology, magnetic tag, RF tag, RFID
• CPC Class Codes: G08B 21/22 responsive to presence or absence of persons

Abstract

A method and system to characterize the wearer of at least one item of footwear having a sensor means which, while the item is being worn, collects from the wearer current pedobarometric data that is characteristic of the wearer, and the current pedobarometric data is compared with corresponding reference data for a specified wearer, preferably previously collected via the same or a similar item of footwear while worn by the specified wearer under controlled conditions, the results of the comparison being used to characterize the present wearer according to prescribed criteria.

Claims

1-71. -71. (canceled)

72. A method of characterizing a wearer of at least one item of apparel having sensor means for sensing biometric data about the wearer, comprising the steps of:

while the wearer is wearing the item of apparel, acquiring from said sensor means biometric data that is characteristic of the wearer;

comparing the biometric data with reference biometric data including corresponding biometric data previously obtained under controlled conditions while the same or a similar item of apparel was being worn by a specified person; and

in dependence upon the result of the comparison, providing an output signal indicating whether or not the wearer is the specified person.

73. A method according to claim 72, wherein the item of apparel comprises footwear, the sensor means comprises pressure-sensitive sensor means of said footwear and the biometric data comprises pedobarographic data, preferably kinetic pedobarographic data, obtained from said pressure-sensitive sensor means.

74. A method according to claim 72, wherein the step of acquiring biometric data from the sensor means is repeated at predetermined intervals while the item of apparel is being worn, said comparison step correlates newly-acquired biometric data with said corresponding biometric data, if the correlation is less than a predetermined degree, determines that the wearer is not the specified person and provides said output signal to that effect, and, optionally, if the correlation is at least equal to the predetermined degree, uses the newly-acquired biometric data to update the reference biometric data, subsequent comparisons then comparing subsequently-acquired biometric data with the updated reference biometric data.

75. A method according to claim 72, wherein the corresponding biometric data is stored locally in or in association with or proximal to the item of apparel.

76. A method according to claim 72, further comprising the step of detecting activation of the sensor means following a period of deactivation and performing at least a first step of acquiring biometric data from the wearer.

77. A method according to claim 72, wherein the comparison step determines the identity of the wearer.

78. A method according to claim 72, further comprising the step of registering a unique identifier to the specific person and storing said corresponding biometric data in association with said unique identifier.

79. A method according to claim 72, wherein the step of acquiring biometric data from the wearer comprises the steps of:

monitoring the sensor means to obtain pedobarographic biometric data of the wearer at predetermined intervals;

generating a pedobarographic template from said pedobarographic data;

comparing a current pedobarographic template with a plurality of stored reference pedobarographic templates for one or more persons, respectively, each template having a unique identifier;

determining a degree of correlation between the current pedobarographic template and each stored template by determining whether there is a match within a threshold range, if there is a match, returning the unique identifier associated with the reference template, and if there is no match, indicating that there is no match.

81. A method according to claim 72, wherein:

the pedobarographic biometric data are acquired from the person at predetermined intervals;

a pedobarographic template is generated periodically from said pedobarographic data,

a newly-generated pedobarographic template is correlated with the stored reference pedobarographic template to determine a degree of correlation,

wherein the determination of a degree of correlation comprises determining whether there is a match within a predetermined threshold range, with an unauthenticated status, and

generating an output signal dependent upon whether or not there is a match,

the pedobarographic biometric data preferably being acquired by acquiring a set of data from each of a plurality (n) of sensors of the sensor means at a plurality (m) of time intervals;

the step of correlating the newly-generated pedobarographic template then optionally comprising the step of processing each acquired set of data to generate a corresponding set of relative differences in pressure data between different pairs of the sensors, adjusting said data to compensate for pressure differences attributable to a change in the weight of the wearer, including articles being carried by the wearer, as compared with the weight of the wearer when the reference pedobarographic template was created and computing a correlation vector therefrom, for example by calculating a standard deviation.

82. A method according to claim 72, wherein the pedobarographic data are acquired for both feet of the wearer and the step of processing the data periodically to create a template processes the pedobarometric data for either, each or both feet.

83. A method according to claim 72, wherein at least a second item of apparel having a second sensor means is used for acquiring biometric data, the step of acquiring biometric data acquires biometric data from both the first and second sensor means and the comparing step correlates each of the first and second sets of biometric data with a corresponding one of first and second previously-stored reference biometric templates for both items of apparel and characterizes the wearer on the basis of both comparisons.

84. A method according to claim 72, wherein at least a second item of apparel having a second sensor means is used for acquiring biometric data, the step of acquiring biometric data acquires biometric data from both the first and second biometric sensor means and the comparing step correlates each of the first and second sets of biometric data with a corresponding one of first and second previously-stored reference biometric templates for both items of apparel and characterizes the wearer on the basis of both comparisons.

85. A method according to claim 84, further comprising the step of recording in each item of apparel an identifier identifying the item as a member of a set comprising both items, subsequently monitoring the identifiers while the items of apparel are being worn, determining whether or not the items as worn are members of the same set and providing an output signal according to whether or not the items are determined to be members of the same set.

93. A method according to claim 72, wherein said item of apparel comprises one of a pair of right and left items of footwear having right foot sensors and left foot sensors, respectively, and the local processing means captures data from both right foot sensors and left foot sensors, derives a right foot template and a left foot template, correlates the right foot template and left foot template with locally_stored right foot and left foot reference templates, respectively, and determines said match in dependence upon the degree of correlation of the data from both the right foot and the left foot, the determination of the match optionally taking into account each degree of correlation in relation to predetermined threshold values of correlation, defining, for example, lower, middle and upper ranges of degrees of correlation.

111. Biometric security apparatus using the method according to claim 72, wherein said pedobarographic sensor means is tagged with a unique identifier associated with a registered owner thereof, and said unique identifier tag of each of said at least one other item of apparel is associated with the registered owner thereof.

80. A method of using pedobarographic data to characterize a person, comprising the steps of:

using pedobarographic sensor means to acquire pedobarographic data from said person,

generating locally from the acquired pedobarographic data a pedobarographic template characterizing the person and correlating said pedobarographic signature template with at least one locally stored reference pedobarographic template associated with either or both of a specified person and an item of apparel; and

characterizing the person according to the degree of correlation between the generated pedobarographic template and the at least one locally stored reference pedobarographic template.

86. A method of authenticating or identifying a person currently wearing an item of apparel, for example an item of footwear having a pressure-sensitive sensor means for collecting pedobarographic biometric data, wherein the item of apparel, while being worn by the person, collects current biometric data that is uniquely characteristic of the wearer, the biometric data is compared with corresponding biometric data previously collected via the same item of apparel while worn under controlled conditions, and stored, and the result of the comparison is used to determine whether or not the current wearer is the same person who wore the apparel under said controlled conditions.

90. A method according to claim 86, further comprising an enrollment step of locally creating a profile for the person, the profile comprising a unique identifier registered to the person, locally stored identity information about the person, and at least one pedobarographic reference template generated for said person and stored in association with said unique identifier.

91. A method according to claim 90, wherein generating a pedobarographic template comprises:

acquiring a set of data from each of a plurality of (n) sensors of the pedobarographic sensor means at a plurality of (m) time intervals, and optionally processing acquired biometric data to generate a corresponding set of relative differences in pressure data between sensors, normalizing the data to compensate for weight changes of the individual, preferably computing a correlation vector therefrom, for example by calculating a standard deviation matrix, and, where the item of apparel is an item of footwear, optionally collecting and processing pedobarographic data using pressure-sensitive sensor means in items of footwear for both feet.

92. A method according to claim 86, wherein, in use, the set of apparel generates a signal indicative of integrity of the set of apparel, the method further comprising monitoring for said integrity signal and, dependent on the signal indicative of integrity of the set of apparel, providing said output signal to indicate authentication status accordingly.

87. A method for biometric identification of a person comprising:

monitoring pedobarographic sensor means at predetermined intervals to obtain pedobarographic biometric data of that person;

generating a pedobarographic template from said pedobarographic data;

determining a degree of correlation between a current pedobarographic template and a stored reference pedobarographic template, by steps comprising comparing a current pedobarographic template with a plurality of locally stored reference pedobarographic templates for each of a respective plurality of persons having a unique identifier;

wherein the step of determining a degree of correlation comprises determining whether there is a match within a threshold range, and when there is a match, returning the unique identifier associated with the reference template, and otherwise indicating there is no match.

88. A method for providing at least one of identification and authentication of a person using biometric data comprising:

using pedobarographic sensor means for generating biometric data comprising pedobarographic data, locally generating therefrom a pedobarographic signature and correlating said pedobarographic signature with at least one locally stored reference pedobarographic signature, each associated with a unique identifier of a respective person.

89. A method for real time biometric authentication of a person comprising:

monitoring pedobarographic sensor means to obtain pedobarographic biometric data from the person at predetermined intervals, said pedobarographic sensor means being associated with a unique identifier;

periodically generating a pedobarographic template from said pedobarographic data;

determining a degree of correlation between the stored template and newly generated template by steps comprising comparing a newly generated pedobarographic template with a stored (reference) pedobarographic template, wherein determining a degree of correlation comprises determining whether there is a match within a threshold range, a match being associated with an authenticated status and no match being associated with an unauthenticated status; and

generating an output signal dependent on the degree of correlation to provide an indication of authentication status.

94. A method for identification of an alarming event comprising:

monitoring pedobarographic sensor means to obtain pedobarographic biometric data of at least one person;

generating a current pedobarographic template for each person from said pedobarographic data;

determining a degree of correlation between a current pedobarographic template and a plurality of stored reference pedobarographic templates that were generated under alarming conditions, by comparing the current pedobarographic template with the plurality of stored reference pedobarographic templates that represent alarming conditions for each person;

wherein the step of determining a degree of correlation comprises determining whether there is a match within a threshold range, and when there is a match, indicating that an alarming event has occurred.

95. A system for characterizing a wearer of an item of apparel, the system comprising:

sensor means in or associated with the item for sensing at least one biometric characteristic of a wearer of the item,

storage means in or associated with said item for storing biometric data, and

processor means in or associated with said item of apparel for controlling the sensor means to acquire biometric data from the wearer, compare the acquired biometric data with corresponding biometric data for a specified wearer, preferably previously collected via the same or a similar item of apparel while worn by the specified wearer under controlled conditions, characterizing the wearer in dependence upon the results of the comparison according to prescribed criteria, and for outputting a signal indicative of the result of the characterization,

the processing means optionally generating from said biometric data a pedobarographic template, and

correlating said pedobarographic template with at least one stored reference pedobarographic template associated with a unique identifier of a respective person.

96. A system for providing at least one of identification and authentication of a person using pedobarographic data comprising:

pedobarographic sensor means for generating biometric data,

local processing means for generating a pedobarographic template and preferably storing the pedobarographic template on the person, for example in said item of apparel, and

local means for correlating said pedobarographic template with at least one locally stored reference pedobarographic template associated with a unique identifier of a specified person.

97. A system comprising sensor means in or for association with an item of apparel for capturing data about at least one biometric characteristic of a person wearing the item of apparel, for example pedobarographic data, gait-based biometric data, including gait information and/or walking cadence, or other kinetic data, the item of apparel comprising storage means for securely storing said data, and processing means for correlating data captured in a first time interval during wearing of the item of apparel by a registered authorized user, and data captured during a subsequent time interval, and determining whether or not there is a match of said data, a mismatch being indicative of wearing of the apparel by an unauthorized user,

the system optionally further comprising means for annunciating whether or not the current wearer is an unauthorized wearer,

the processing means preferably providing for real time processing of data captured and stored periodically during use.

98. A system according to claim 97, wherein said apparel comprises right and left footwear having right foot sensors and left foot sensors, respectively, and the processing means captures data from both right foot sensors and left foot sensors, derives a right foot template and a left foot template, correlates the right foot template and left foot template with stored right foot and left foot reference templates, respectively, and determines said match in dependence upon the degree of correlation of the data from both the right foot and the left foot,

each degree of correlation optionally being determined in relation to predetermined threshold values of correlation, defining, for example, lower, middle and upper ranges of degrees of correlation.

99. Biometric security apparatus for providing for at least one of monitoring, identification and authentication of a person, comprising:

pedobarographic sensor means for acquiring pedobarographic data of said person and having associated identity information comprising at least a unique identifier tag;

control means comprising;

input means for receiving data from said pedobarographic sensor means, and

local_storage means for storing data comprising at least one pedobarographic template (signature) generated from said pedobarographic data, and associated identity information;

local processing means operable to;

monitor/sample pedobarographic data from the pedobarographic sensor means at predetermined intervals and periodically generate a current pedobarographic template (signature) therefrom; and

compare a current pedobarographic template (current template) with a stored reference pedobarographic template (stored template), and determine a degree of correlation between the current template and the stored reference template; and

output means for generating an output/control signal dependent on the degree of correlation between the stored reference template and the current template,

said correlation means optionally providing an output control signal indicative of an authentication status, for example when a degree of correlation between a current template and the stored template is within a threshold range;

otherwise said output signal being indicative of an unauthenticated status,

or said correlation means optionally providing an output control signal indicative of an alarm status, for example when a degree of correlation between a current status template and an alarm template is within a threshold range.

100. Biometric security apparatus according to claim 99, wherein the processing means comprises means for encrypting data whether being input, output or stored.

101. Biometric security apparatus according to claim 99, further comprising annunciation means for annunciating an authentication status dependent on said output control signal, for example, wherein the annunciator means comprises one or more of visual display means, audible signal generation means, inaudible signal generating means and RF transponder means.

102. Biometric security apparatus according to claim 99, wherein the pedobarographic sensor means comprises a plurality of sensors of a pedobarographic insole for footwear, and said control means is connected thereto.

103. Biometric security apparatus according to claim 99, associated with a pair of footwear, wherein the pedobarographic sensor means comprises a plurality of sensors embedded in at least a sole portion of each of the footwear, and wherein the control means is carried by at least one of the pair of footwear.

104. Biometric security apparatus according to claim 99, associated with a pair of footwear, wherein the pedobarographic sensor means comprises a set of a plurality of sensors in a sole portion of each of the pair the footwear, and control means are carried by each of the pair of footwear, one of the pair carrying a first storage and processing means and the other one of the pair providing second storage and processing means, and further comprising interface means for connecting said first and second control means, for example, wherein the first control means functions as a master and the second control means functions as a slave.

105. Biometric security apparatus according to claim 101, wherein an annunciating means is provided on at least one of the pair of footwear for indicating authentication status dependent on control signal received from at least one of said pair of footwear.

106. Biometric security apparatus according to claim 104, wherein said footwear comprises part of a set of apparel, for example a uniform, comprising said pair of footwear and at least one other item of apparel, each item carrying a unique identifier tag, at least one interface means for connection with footwear or other apparel of the set, and a communications gateway for sending/receiving data from said at least one connection.

107. Biometric security apparatus according to claim 99, associated with a pair of footwear, wherein the pedobarographic sensor means comprises a set of a plurality of sensors in a sole portion of each of the pair the footwear, and first and second control means are carried by respective ones of the pair of footwear, one of the pair carrying a first storage and processing means and the other one of the pair providing second storage and processing means, and further comprising interface means for connecting said control means, for example, wherein the first control means functions as a master and the second control means functions as a slave, wherein said footwear may comprise part of a set of apparel, for example a uniform, comprising said pair of footwear and at least one other item of apparel, each item carrying a unique identifier tag, at least one interface means for connection with footwear or other apparel of the set, and a communications gateway for sending/receiving data from said at least one connection.

wherein said connection means preferably comprises a connector interface on each one of the pair of footwear for connection to other items of apparel

and optionally control means of a right one and a left one of the pair of footwear is connected by the connecting means via at least one other item of apparel,

the means for connecting comprising, for example, wired connections carried by the footwear and other items of apparel, including fiber optic connections, or wireless connections therebetween.

108. Biometric security apparatus according to claim 106, wherein said communications gateway comprises part of the control means.

109. Biometric security apparatus according to claim 108, further comprising annunciation means carried by at least one of said set of apparel for indicating an authentication status dependent on a control signal received from the control means.

110. Biometric security apparatus according to claim 108, wherein the control means monitors integrity of connections between said set of apparel, and generates an output control signal indicative of integrity status.

112. Biometric security apparatus according to claim 99, wherein the control means provides for enrollment of a registered user of the apparatus, comprising receiving and storing identity information of the registered user, and generating and storing at least one initial reference pedobarographic template of the registered user.

113. Biometric security apparatus according to claim 99, further comprising:

means for querying a database comprising a plurality of stored (reference) pedobarographic templates for each of a respective plurality of persons associated with a respective unique identifier, and determining whether there is a match with the current template within a threshold range, and when there is a match, returning the unique identifier associated with the matched reference template, and otherwise indicating there is no match.

114. Biometric security apparatus according to claim 99, wherein the processing means further comprises means for encryption of data and communications comprising pedobarographic templates and identity information.

115. A set of apparel comprising a plurality of items normally worn together, each item having means for registering the item as a member of the set, and means for detecting whether or not one or more of said items are being worn at the same time as another item that is not a member of the set, and signaling if said another item is not a member of the set.