# US 2021/0241562 A1 · Method for door open / close detection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0241562 A1 - Document ID: US20210241562A1 - Status: Published application - Kind: A1 - Application number: 17/049,898 - Filed: 2019-04-23 - Published: 2021-08-05 - Earliest claimed: 2018-04-25 - Assignees: Carrier Corporation - Applicants: Carrier Corporation - Inventors: Ankit Tiwari; Yuri Novozhenets; Pedro Fernandez-Orellana; Kunal Srivastava; Adam Kuenzi - Web page: https://patentgrep.com/patent/US20210241562A1 ## CPC - G07C 9/00896: {specially adapted for particular uses} - G07C 9/28: the pass enabling tracking or indicating presence - G07C 9/00: Individual registration on entry or exit - G07C 9/00309: {operated with bidirectional data transmission between data carrier and locks} - G07C 9/29: the pass containing active electronic elements, e.g. smartcards - H04R 1/222: {for microphones (H04R1/24, H04R1/26 take precedence)} - H04W 4/025: {using location based information parameters} - H04W 4/33: for indoor environments, e.g. buildings - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - G07C 2009/00769: {with data transmission performed by wireless means} - G07C 2209/62: Comprising means for indicating the status of the lock - G07C 2209/63: Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle - H04R 2201/40: Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups - G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method of detecting passage by an individual carrying a mobile device past an impediment operably connected to an access control is provided. The method including: detecting positional data of a mobile device; transmitting an access request from the mobile device to an access control operably connected to an impediment; detecting at least one of a sound from the impediment and a motion of the impediment; and determining that an individual carrying the mobile device has moved past the impediment in response to at least one of the sound from the impediment, the motion of the impediment, and the positional data of the mobile device. ## Claims ### Claim 1 A method of detecting passage by an individual carrying a mobile device past an impediment operably connected to an access control, the method comprising: detecting positional data of a mobile device; transmitting an access request from the mobile device to an access control operably connected to an impediment; detecting at least one of a sound from the impediment and a motion of the impediment; and determining that an individual carrying the mobile device has moved past the impediment in response to at least one of the sound from the impediment, the motion of the impediment, and the positional data of the mobile device. ### Claim 2 (depends on 1) The method of claim 1, wherein detecting positional data of the mobile device further comprises; detecting a location of the mobile device relative to the impediment prior to detecting at least one of the sound from the impediment and the motion of the impediment; and detecting a location of the mobile device relative to the impediment after detecting at least one of the sound from the impediment and the motion of the impediment. ### Claim 3 (depends on 1) The method of claim 1, wherein the impediment is a door and the access control is a door lock. ### Claim 4 (depends on 1) The method of claim 1, wherein the sound from the impediment is detected by one or more microphones. ### Claim 5 (depends on 4) The method of claim 4, wherein the one or more microphones are located in at least one of the mobile device and access control. ### Claim 6 (depends on 1) The method of claim 1, wherein the motion of the impediment is detected by a sensor operably connected to the impediment. ### Claim 7 (depends on 1) The method of claim 1, wherein the motion of the impediment is detected by a sensor located on the impediment. ### Claim 8 (depends on 7) The method of claim 7, wherein the sensor is located within the access control on the impediment. ### Claim 9 (depends on 1) The method of claim 1, wherein the detecting positional data of a mobile device further comprises: determining a distance between the mobile device and the access control in response to a signal strength of a wireless signal emitted by at least one of the mobile device and the access control. ### Claim 10 (depends on 9) The method of claim 9, wherein the wireless signal is Bluetooth. ### Claim 11 (depends on 1) The method of claim 1, further comprising: generating an access granted and entry made event in response to the determination that an individual carrying the mobile device has moved past the impediment in response to at least one of the sound from the impediment, the motion of the impediment, and the positional data of the mobile device. ### Claim 12 A method of detecting lack of passage by an individual carrying a mobile device past an impediment operably connected to an access control, the method comprising: detecting positional data of a mobile device; transmitting an access request from the mobile device to an access control operably connected to an impediment; detecting at least one of a sound from the impediment and a motion of the impediment; and determining that an individual carrying the mobile device has not moved past the impediment in response to the positional data of the mobile device. ### Claim 13 (depends on 12) The method of claim 12, wherein the determination that an individual carrying the mobile device has not moved past the impediment in response to the positional data of the mobile device is made a selected period of time after at least one of a sound from the impediment and a motion of the impediment is detected. ### Claim 14 (depends on 13) The method of claim 13, further comprising: generating an access granted but no entry made event in response to the determination that an individual carrying the mobile device has not moved past the impediment in response to the positional data of the mobile device. ### Claim 15 A method of detecting passage by an individual carrying a mobile device past an impediment operably connected to an access control, the method comprising: detecting positional data of a mobile device; transmitting an access request from the mobile device to an access control operably connected to an impediment; detecting neither a sound from the impediment nor a motion of the impediment; and determining that an individual carrying the mobile device has moved past the impediment in response to the positional data of the mobile device. ### Claim 16 (depends on 15) The method of claim 15, further comprising: generating a door held open event in response to the determination that an individual carrying the mobile device has moved past the impediment in response to the positional data of the mobile device.