# US 12,222,223 B2 · Active footwear sensor calibration > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,222,223 B2 - Document ID: US12222223B2 - Status: Granted - Kind: B2 - Application number: 17/746,620 - Filed: 2022-05-17 - Published: 2022-09-08 - Granted: 2025-02-11 - Earliest claimed: 2016-03-15 - Assignees: NIKE, Inc. - Applicants: NIKE, Inc. - Inventors: Steven H. Walker; Phillip Meneau - Web page: https://patentgrep.com/patent/US12222223B2 ## CPC - G01D 18/00: Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00 - A43B 1/0054: {provided with magnets, magnetic parts or magnetic substances} - A43B 3/0031: {provided with a pocket, e.g. for keys or a card} - A43B 3/34: with electrical or electronic arrangements - A43B 3/36: with light sources - A43B 13/14: characterised by the constructive form - A43B 17/00: Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined - A43C 1/00: Shoe lacing fastenings (garment fastening devices A41F) - A43C 7/00: Holding-devices for laces - A43C 11/165: {characterised by a spool, reel or pulley for winding up cables, laces or straps by rotation} - G01D 5/12: using electric or magnetic means (G01D5/06 takes precedence) - G01D 5/24: by varying capacitance - G01L 1/12: by measuring variations in the magnetic properties of materials resulting from the application of stress - G01L 1/144: {with associated circuitry (G01L1/146 and G01L1/148 take precedence)} - G05B 15/02: electric - G05B 19/048: Monitoring; Safety - G01D 5/145: {influenced by the relative movement between the Hall device and magnetic fields (see G01R33/06)} - G01D 5/2405: {by varying dielectric} - G01D 5/34: the beams of light being detected by photocells - G05B 2219/24015: Monitoring - G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR - A43B: CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR - A43C: FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL - G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G) - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) ## Abstract A foot presence sensor system for an active article of footwear can include a sensor housing configured to be disposed at or in an insole of the article, and a controller circuit, disposed within the sensor housing, configured to trigger one or more automated functions of the footwear based on a foot presence indication. In an example, the sensor system includes a capacitive sensor, and the sensor is configured to sense changes in a foot proximity to the sensor in footwear. A baseline or reference condition for the capacitive sensor can be updated to accommodate different use conditions. ## Claims ### Claim 1 An article of footwear comprising: a device configured to tighten or loosen the article of footwear; a housing provided in a footbed of the article of footwear, wherein the device is disposed inside the housing; a touch sensor comprising two or more electrodes that are spaced apart along an outside surface of the housing and configured to receive a user touch input at a side surface of the article of footwear, wherein the user touch input bridges at least two of the electrodes, and wherein the sensor is configured to receive the user touch input at multiple locations along a length of the sensor; a measurement circuit configured to measure a capacitance-indicating signal from the two or more electrodes, wherein the capacitance-indicating signal includes information about a location of the user touch input on the sensor; and a processor circuit configured to receive information about the capacitance-indicating signal and, in response, provide a corresponding control signal to the device to tighten or loosen the article of footwear; wherein the processor circuit is configured to determine a rate of change in the capacitance-indicating signal, wherein the rate of change indicates a gesture or movement of the user touch input along the touch sensor, and the processor circuit is configured to control the device based on the rate of change; and wherein the housing is configured to be received in a cavity of the footbed, and the cavity includes a lateral side opening configured to allow user access to the touch sensor. ### Claim 2 (depends on 1) The article of footwear of claim 1, wherein the two or more electrodes of the touch sensor comprise substantially planar electrodes that are spaced apart. ### Claim 3 (depends on 2) The article of footwear of claim 2, wherein the substantially planar electrodes are similarly sized and have a right triangular shape, and the electrodes are adjacent to each other along all or a portion of their respective hypotenuses. ### Claim 4 (depends on 1) The article of footwear of claim 1, wherein the change in the capacitance-indicating signal indicates a swipe gesture along the length of the sensor. ### Claim 5 (depends on 1) The article of footwear of claim 1, wherein the rate of change indicates a magnitude of a desired footwear tightness change. ### Claim 6 (depends on 1) The article of footwear of claim 1, wherein the location of the user touch input on the sensor corresponds to a magnitude of a desired increment or decrement of a tightness characteristic of the footwear. ### Claim 7 (depends on 1) The article of footwear of claim 1, wherein the at least two electrodes are fixedly spaced apart and wherein the user touch input electrically couples the at least two electrodes via a portion of the user's body. ### Claim 8 A footwear system comprising: a lacing engine configured to tighten or loosen an article of footwear in response to a control signal; a processor circuit configured to generate the control signal; a housing disposed in a footbed of the article of footwear and configured to enclose at least a portion of the lacing engine and the processor circuit; and a touch sensor including two or more electrodes disposed on a side surface of the housing, the sensor communicatively coupled with the processor circuit and configured to receive a user input at a lateral side surface of the footbed of the article of footwear, wherein the user input electrically couples the two or more electrodes via a user body; wherein the processor circuit is configured to generate the control signal based on a rate of change of the user input, wherein the rate of change indicates a gesture or movement of the user input along a surface of the touch sensor. ### Claim 9 (depends on 8) The footwear system of claim 8, wherein the two or more electrodes are elongate substantially planar structures provided at least partially adjacent to each other and spaced apart from each other. ### Claim 10 (depends on 9) The footwear system of claim 9, wherein the processor circuit is configured to generate the control signal based on a location of the user input to the touch sensor. ### Claim 11 (depends on 8) The footwear system of claim 8, wherein the two or more electrodes include substantially planar electrodes that are similarly sized and triangularly shaped. ### Claim 12 (depends on 8) The footwear system of claim 8, wherein the touch sensor is disposed at one or more of a tongue, outsole, toe region, or heel region of the article of footwear, and wherein the touch sensor is electrically coupled to the processor circuit. ### Claim 13 (depends on 8) The footwear system of claim 8, wherein the touch sensor comprises a capacitive sensor configured to measure a capacitance between the two or more electrodes, wherein a magnitude of the capacitance changes according to the user input. ### Claim 14 (depends on 8) The footwear system of claim 8, wherein the touch sensor is configured to receive a user input that includes a swipe gesture that electrically couples the two or more electrodes, using the user body, over a segment of the sensor. ### Claim 15 (depends on 8) The footwear system of claim 8, wherein the housing is configured to be received in a cavity of the footbed, and the cavity includes a lateral side opening configured to allow user access to the touch sensor. ### Claim 16 A footwear system comprising: a processor circuit; a device configured to tighten or loosen an article of footwear about a body; a housing, wherein the device is disposed inside the housing; and a touch sensor comprising first and second elongate electrodes that are substantially adjacent and spaced apart along a first length of the sensor, wherein: the first and second electrodes are coupled to a side surface of the housing and the electrodes are configured to receive a user body input, through a lateral side opening of a footbed of the article of footwear, and the user body input electrically shunts the electrodes via contact between the user body and the electrodes, and the sensor is configured to receive the user body input at different locations along the first length of the sensor at different times, and in response, provide respective corresponding sensor signal values indicative of a position of the user body input; wherein the processor circuit is configured to determine a gesture or movement of the user body input using information about a rate of change of the sensor signal values. ### Claim 17 (depends on 16) The footwear system of claim 16, wherein the first and second elongate electrodes are substantially right triangular, planar electrodes that are positioned adjacent to each other along their hypotenuses. ### Claim 18 (depends on 16) The footwear system of claim 16, wherein the first and second elongate electrodes have different electrical conductivity characteristics. ### Claim 19 (depends on 16) The footwear system of claim 16, wherein at a first position of the user body input on the sensor, the user body input contacts a greater surface area of the first electrode than the second electrode and, at a second position of the user body input on the sensor, the user body input contacts a lesser surface area of the first electrode than the second electrode.