# US 12,007,469 B1 · Trajectory determination system using positional sensing to determine the movement of people or objects > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,007,469 B1 - Document ID: US12007469B1 - Status: Granted - Kind: B1 - Application number: 18/503,060 - Filed: 2023-11-06 - Granted: 2024-06-11 - Earliest claimed: 2023-08-04 - Assignees: Block, Inc. - Applicants: Density, Inc. - Inventors: Andrew Farah; Zach Brand; Emre Sonmez; John Shanley - Web page: https://patentgrep.com/patent/US12007469B1 ## CPC - G01S 7/415: {Identification of targets based on measurements of movement associated with the target} - G01S 13/581: {using transmission of interrupted pulse modulated waves and based upon the Doppler effect resulting from movement of targets} - G01S 7/20: Stereoscopic displays; Three-dimensional [3D] displays; Pseudo-3D displays - G01S 7/22: Producing cursor lines and indicia by electronic means - G01S 7/417: {involving the use of neural networks} - G01S 13/72: for two-dimensional [2D] tracking, e.g. combination of angle and range tracking, track-while-scan radar - G01S 13/87: Combinations of radar systems, e.g. primary radar and secondary radar - G06Q 10/047: Optimisation of routes or paths, e.g. travelling salesman problem - G06Q 10/06312: {Adjustment or analysis of established resource schedule, e.g. resource or task levelling, or dynamic rescheduling} - G01S 2013/0245: {Radar with phased array antenna} - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR ## Abstract A positional sensing system includes a plurality of positional sensing devices which are situated at regular intervals within an environment and collect data for tracking objects moving within the environment. The positional sensing system is used to determine the occupancy and trajectories of people within the environment. The system can determine whether certain areas of the environment need to be cleaned based on occupancy. When a threshold level of use is detected for one or more areas of the environment, the positional sensing system dynamically determines that one or more areas require cleaning, and can generate a cleaning plan for the one or more areas. The positional sensing system can determine an optimal cleaning route through the environment based on the location of one or more areas. Once the cleaning plan is generated, the system can provide the cleaning plan to a user of the positional sensing system for utilization. ## Claims ### Claim 1 A system comprising: one or more positional sensing devices configured to monitor an environment, the environment comprising one or more areas; a server operatively coupled to the plurality of positional sensing devices via a network the server being configured to: receive (i) a usage threshold and (ii) time window selection from a user; receive positional data for one or more detected individuals within the environment from the one or more positional sensing devices; determine usage levels for each of the one or more areas based on the positional data and generate a dynamic cleaning plan based on (i) the usage threshold, (ii) the time window selection, and (iii) the usage levels. ### Claim 2 (depends on 1) The system of claim 1, wherein the positional data further comprises timestamp data. ### Claim 3 (depends on 2) The system of claim 2, wherein determining usage levels for each of the one or more areas based on the positional data further comprises: determining a length of time each of the one or more detected individuals remains within each of the one or more areas based on the positional data and the timestamp data; and aggregating the length of time each of the one or more detected individuals remains within each of the one or more areas. ### Claim 4 (depends on 3) The system of claim 3, wherein determining a length of time each of the one or more detected individuals remains within each of the one or more areas further comprises determining a trajectory for each of the one or more detected individuals through each of the one or more areas based on the (i) positional data and (ii) timestamp data. ### Claim 5 (depends on 1) The system of claim 1, wherein the usage threshold comprises a first threshold associated with a first level of cleaning and a second threshold associated with a second level of cleaning. ### Claim 6 (depends on 1) The system of claim 1, wherein each of the one or more positional sensing devices comprises: a pulse generator for generating pulses; a sensor for measuring data regarding a phase shift or amplitude change in modulated pulses from the pulse generator to one or more detected objects; and a first module for converting the data regarding the phase shift or amplitude change into (i) positional data and (ii) timestamp data for the one or more detected objects. ### Claim 7 (depends on 1) The system of claim 1, wherein the time window selection comprises a time less than or equal to twenty four hours. ### Claim 8 (depends on 1) The system of claim 1, wherein the server is further configured to transmit the dynamic cleaning plan to the user. ### Claim 9 (depends on 8) The system of claim 8, wherein transmitting the dynamic cleaning plan further comprises sending a push request to the user, receiving a pull request from the user, sending an email to the user, sending an SMS to the user, or combinations thereof. ### Claim 10 (depends on 1) The system of claim 1, wherein the usage threshold comprises a usage threshold for each of the one or more areas. ### Claim 11 A method comprising: receiving, at a server, (i) a usage threshold and (ii) time window selection from a user; receiving positional data for one or more detected individuals within an environment from one or more positional sensing devices operatively coupled to the server via a network, wherein the environment comprises one or more areas; determining, by the server, usage levels for each of the one or more areas based on the positional data; and generating a dynamic cleaning plan based on (i) the usage threshold, (ii) the time window selection, and (iii) the usage levels. ### Claim 12 (depends on 11) The method of claim 11, wherein the positional data further comprises timestamp data. ### Claim 13 (depends on 12) The method of claim 12, wherein determining usage levels for each of the one or more areas based on the positional data further comprises: determining a length of time each of the one or more detected individuals remains within each of the one or more areas based on the positional data and the timestamp data; and aggregating the length of time each of the one or more detected individuals remains within each of the one or more areas. ### Claim 14 (depends on 13) The method of claim 13, wherein determining a length of time each of the one or more detected individuals remains within each of the one or more areas further comprises determining, by the server, a trajectory for each of the one or more detected individuals through each of the one or more areas based on the (i) positional data and (ii) timestamp data received from the one or more positional sensing devices. ### Claim 15 (depends on 11) The method of claim 11, wherein the usage threshold comprises a first threshold associated with a first level of cleaning and a second threshold associated with a second level of cleaning. ### Claim 16 (depends on 11) The method of claim 11, wherein each of the one or more positional sensing devices comprises: a pulse generator for generating pulses; a sensor for measuring data regarding a phase shift or amplitude change in modulated pulses from the pulse generator to one or more detected objects; and a first module for converting the data regarding the phase shift or amplitude change into (i) positional data and (ii) timestamp data for the one or more detected objects. ### Claim 17 (depends on 11) The method of claim 11, wherein the time window selection comprises a time less than or equal to twenty four hours. ### Claim 18 (depends on 11) The method of claim 11, further comprising transmitting, by the server, the dynamic cleaning plan to the user. ### Claim 19 (depends on 18) The method of claim 18, wherein transmitting the dynamic cleaning plan further comprises sending a push request to the user, receiving a pull request from the user, sending an email to the user, sending an SMS to the user, or combinations thereof. ### Claim 20 (depends on 11) The method of claim 11, wherein the usage threshold comprises a usage threshold for each of the one or more areas.