# US 2025/0164992 A1 · Dynamic Worksite Management System > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0164992 A1 - Document ID: US20250164992A1 - Status: Published application - Kind: A1 - Application number: 18/510,785 - Filed: 2023-11-16 - Published: 2025-05-22 - Earliest claimed: 2023-11-16 - Assignees: Caterpillar Inc. - Applicants: Caterpillar Inc. - Inventors: Anthony Dean McNealy; Russell Aaron Schloss; Carsten Thees; Robert Jason McGee - Web page: https://patentgrep.com/patent/US20250164992A1 ## CPC - G05D 1/0282: {generated in a local control room} - G05D 1/0289: {with means for avoiding collisions between vehicles (vehicle fittings for automatically controlling speed including means for detecting potential obstacles B60K31/0008; avoiding obstacles by action on the steering system B62D; radar, sonar, lidar systems designed for anti-collision purposes G01S13/93, G01S15/93, G01S17/93)} - G05D 1/0297: {by controlling means in a control room} - G05D 1/225: operated by off-board computers - G05D 1/226: Communication links with the remote-control arrangements - G05D 1/693: for avoiding collisions between vehicles - G05D 1/6987: {by centralised control off-board any of the vehicles} - G05D 2105/28: of freight - G05D 2107/73: {Mining} - G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES ## Abstract A node monitoring system, including a plurality of nodes, each of the plurality of nodes registered and connected with a controller to simultaneously receive and return a short poll signal and a long poll signal; and a controller configured to: register an area as an operation zone having a boundary; simultaneously send and receive a short poll signal and a long poll signal to and from each of the plurality of nodes; command at least one of the plurality of nodes to power off in response to a failure to receive the short poll signal from the at least one of the plurality of nodes; alert others of the plurality of nodes that the at least one of the plurality of nodes is operating outside of a spatial boundary. ## Claims ### Claim 1 A work machine, comprising: a frame; a power source supported by the frame; and a control module configured to control operation of the work machine and interact with a node monitoring system having a controller configured to: register the work machine as a short poll node with the controller, the controller configured to send a short poll signal to a plurality of short poll nodes, register the work machine as a long poll node with the controller, the controller configured to send the short poll signal to a plurality of long poll nodes, send the short poll signal to the control module of the work machine and shut down the power source if the short poll signal is not returned, and simultaneously send a long poll signal to the control module of the work machine and alert nearby ones of the plurality of long poll nodes if the long poll signal is not returned. ### Claim 2 (depends on 1) The work machine of claim 1, wherein the work machine is operator controlled and includes a cabin for an operator and housing the control module. ### Claim 3 (depends on 2) The work machine of claim 2, further comprising an emergency stop in the cabin proximate to the operator, the emergency stop configured to shut down the power source. ### Claim 4 (depends on 1) The work machine of claim 1, wherein the work machine includes an emergency stop on an exterior portion of the work machine that an operator proximate to a ground level may interact with, the emergency stop configured to shut down the power source. ### Claim 5 (depends on 4) The work machine of claim 4, wherein the work machine is remote controlled and includes a remote control module operated by a remote operator and controlling the work machine through interaction with the control module. ### Claim 6 (depends on 5) The work machine of claim 5, wherein the remote control module includes a secondary emergency stop, the secondary emergency stop configured to shut down the power source. ### Claim 7 (depends on 1) The work machine of claim 1, wherein the work machine is an autonomous machine, and the controller includes a secondary emergency stop configured to be triggered by a remote operator and shut down the power source. ### Claim 8 A node monitoring system, comprising: a plurality of nodes, each of the plurality of nodes registered and connected with a controller to simultaneously receive and return a short poll signal and a long poll signal; and the controller configured to: register an area as an operation zone having a boundary; simultaneously send and receive the short poll signal and the long poll signal to and from each of the plurality of nodes; command at least one of the plurality of nodes to power off in response to a failure to receive the short poll signal from the at least one of the plurality of nodes; alert others of the plurality of nodes that the at least one of the plurality of nodes is operating outside of a spatial boundary. ### Claim 9 (depends on 8) The node monitoring system of claim 8, wherein the operation zone having the boundary includes multiple operation zones each having a zone boundary. ### Claim 10 (depends on 8) The node monitoring system of claim 8, wherein the plurality of nodes includes a portable transmitter and receiver configured to be worn by a person. ### Claim 11 (depends on 8) The node monitoring system of claim 8, wherein the plurality of nodes includes a vehicle having a control module with a transmitter and a receiver. ### Claim 12 (depends on 11) The node monitoring system of claim 11, wherein the vehicle is operator controlled. ### Claim 13 (depends on 11) The node monitoring system of claim 11, wherein the vehicle is remote controlled. ### Claim 14 (depends on 11) The node monitoring system of claim 11, wherein the vehicle is an autonomous vehicle. ### Claim 15 A method for monitoring a work site, the work site having a plurality of work machines, a plurality of equipment, and a plurality of workers forming a plurality of nodes, comprising: determining a boundary for an area in which each of the plurality of nodes may travel; determining an allowable proximity between each of the plurality of nodes; determining a position of each of the plurality of nodes, and reporting the position of each of the plurality of nodes to a controller, including: registering each of the plurality of nodes with a short poll signal, the short poll signal being sent out to each of the plurality of nodes to determine an instantaneous position; registering each of the plurality of nodes with a long poll signal, the long poll signal being sent out to each of the plurality of nodes to determine if any of the plurality of nodes are operating outside of the boundary; shutting down at least one of the plurality of nodes, after determining that one of the plurality of nodes has not returned the short poll signal; and determining that one of the plurality of nodes is operating outside of the boundary, and alerting nearby nodes. ### Claim 16 (depends on 15) The method of claim 15, further comprising shutting down at least one of the plurality of nodes if any two of the plurality of nodes come within the allowable proximity. ### Claim 17 (depends on 15) The method of claim 15, wherein determining the boundary for the area includes determining an operation zone on the work site. ### Claim 18 (depends on 17) The method of claim 17, wherein the method includes registering one of the plurality of work machines as one of the plurality of nodes. ### Claim 19 (depends on 18) The method of claim 18 wherein the method includes providing the one of the plurality of work machines with a control module having a signal transmitter and receiver. ### Claim 20 (depends on 17) The method of claim 17, wherein the method includes registering one of the plurality of workers as one of the plurality of nodes and providing the one of the plurality of workers with a portable signal transmitter and receiver.