# US 11,442,171 B2 · Threat detection and notification system for public safety vehicles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,442,171 B2 - Document ID: US11442171B2 - Status: Granted - Kind: B2 - Application number: 16/523,690 - Filed: 2019-07-26 - Published: 2021-01-28 - Granted: 2022-09-13 - Earliest claimed: 2019-07-26 - Assignees: 6 Watch, Inc. - Applicants: Eric Gahagan; Eric Lizotte; Theodore Schnackertz - Inventors: Eric Gahagan; Eric Lizotte; Theodore Schnackertz - Web page: https://patentgrep.com/patent/US11442171B2 ## CPC - G01S 17/89: for mapping or imaging - G01S 17/931: of land vehicles - G01S 7/003: {Transmission of data between radar, sonar or lidar systems and remote stations} - G01S 7/4808: {Evaluating distance, position or velocity data} - G01S 7/51: Display arrangements - G01S 17/10: using transmission of interrupted, pulse-modulated waves (determination of distance by phase measurements G01S17/32) - G01S 17/58: Velocity or trajectory determination systems; Sense-of-movement determination systems - G01S 17/86: Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders - G01S 17/88: Lidar systems specially adapted for specific applications - G06V 20/20: in augmented reality scenes - G06V 20/52: Surveillance or monitoring of activities, e.g. for recognising suspicious objects (recognising microscopic objects G06V20/69) - G06V 20/58: Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads - G08B 13/1672: {using sonic detecting means, e.g. a microphone operating in the audio frequency range} - G08B 13/19647: {Systems specially adapted for intrusion detection in or around a vehicle} - G08B 21/0476: {Cameras to detect unsafe condition, e.g. video cameras} - G08B 29/185: {Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system} - B60Q 9/00: Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00 {, e.g. haptic signalling} - G01S 17/87: Combinations of systems using electromagnetic waves other than radio waves - G06V 40/172: {Classification, e.g. identification} - 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 - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL ## Abstract The present invention is directed to a threat detection and notification system which preferably comprises a LIDAR unit capable of detecting an object in its field of view during a first and subsequent refresh scans, and outputting point cloud data representative of the object detected in a refresh frame corresponding to every refresh scan. A server is operatively connected to the LIDAR unit and is capable of receiving the point cloud data and determining, for the object detected within each refresh frame, a predetermined set of object-specific attributes. A user control interface is operatively connected to the server and is capable of creating a watch zone defining an area of interest less than the LIDAR unit's field of view, and is further capable of defining a plurality of watch mode parameters associated with the watch zone. A LIDAR alert engine is operatively connected to the server and is capable of determining whether the object detected in each refresh frame is located within the watch zone, calculating at least one indicant of motion of the object, and comparing at least one object-specific attribute and the at least one indicant of motion of the object to the defined watch mode parameters. The LIDAR alert engine is capable of alerting a predetermined user to the presence of the object in the event the object is within the watch zone and the aforementioned comparison indicates an alert condition. ## Claims ### Claim 1 A threat detection and notification system comprising: a LIDAR unit operatively connected to a platform, said LIDAR unit capable of detecting a first object in its field of view during a first and subsequent refresh scans, and outputting point cloud data representative of the first object detected in a refresh frame corresponding to every refresh scan; a server operatively connected to said LIDAR unit, said server capable of receiving the point cloud data and determining, for the first object detected within each refresh frame, a predetermined set of object-specific attributes, including the first object's object type; a user control interface operatively connected to said server, said user control interface capable of creating a watch zone defining an area of interest less than said LIDAR unit's field of view, said user control interface further capable of defining a plurality of watch mode parameters associated with said watch zone, wherein at least one watch mode parameter includes object type; and a LIDAR alert engine operatively connected to said server, said LIDAR alert engine capable of determining whether the first object detected in each refresh frame is located within the watch zone, and, if the first object is within the watch zone, calculating at least one indicant of motion of the first object, and comparing the object type and the at least one indicant of motion of the first object to the defined watch mode parameters, wherein said LIDAR alert engine is further capable of alerting a predetermined user that the first object is within the watch zone in the event the aforementioned comparison indicates an alert condition. ### Claim 2 (depends on 1) The threat detection and notification system of claim 1, wherein the watch zone capable of being created by said user control interface is a rectangular watch zone. ### Claim 3 (depends on 1) The threat detection and notification system of claim 1, wherein the watch zone capable of being created by said user control interface is a polar watch zone. ### Claim 4 (depends on 1) The threat detection and notification system of claim 1, wherein the object type includes “person”, “vehicle”, “other” and/or “officer”. ### Claim 5 (depends on 1) The threat detection and notification system of claim 1, wherein the watch mode parameters further include velocity. ### Claim 6 (depends on 1) The threat detection and notification system of claim 1, wherein the watch mode parameters further include angle of approach relative to a predetermined reference point. ### Claim 7 (depends on 1) The threat detection and notification system of claim 1, wherein the at least one indicant of motion of the first object includes the first object's velocity. ### Claim 8 (depends on 1) The threat detection and notification system of claim 1, wherein the at least one indicant of motion of the first object includes the first object's angle of approach relative to a predetermined reference point. ### Claim 9 (depends on 1) The threat detection and notification system of claim 1, wherein said platform is a mobile platform having a light bar, and wherein said LIDAR unit is operatively connected to said light bar. ### Claim 10 (depends on 1) The threat detection and notification system of claim 1, wherein said platform is a stationary platform having a mounting plate, and wherein said LIDAR unit is operatively connected to said mounting plate. ### Claim 11 (depends on 1) The threat detection and notification system of claim 1, said system further comprising: a camera unit operatively connected to said platform, said camera unit capable of capturing streaming video data having a plurality of individual video frames; a video interface operatively connected to said camera unit, said video interface capable of receiving the captured streaming video data; and said server operatively connected to said video interface, said server further capable of receiving the captured streaming video data and making at least a portion of same available to the predetermined user. ### Claim 12 (depends on 11) The threat detection and notification system of claim 11, wherein said server is further capable of determining whether a second object captured in a video frame matches an object from a list of predetermined objects, and, if so, overlaying a graphics box around the second object such that the graphics box is capable of being viewed simultaneously with the video frame that includes the second object. ### Claim 13 (depends on 11) The threat detection and notification system of claim 11 further comprising a video alert engine operatively connected to said server, said video alert engine capable of determining whether a second object captured in a video frame matches an object from a list of predetermined objects, and, if so, alerting the predetermined user to the presence of the second object. ### Claim 14 (depends on 1) The threat detection and notification system of claim 1, said system further comprising: a microphone unit capable of capturing streaming audio signal; an audio interface operatively connected to said microphone unit, said audio interface capable of receiving the captured streaming audio signal; and said server operatively connected to said audio interface, wherein said server is capable of receiving the captured streaming audio signal, and wherein said server is further capable of making at least a portion of the captured streaming audio signal available to the predetermined user. ### Claim 15 (depends on 14) The threat detection and notification system of claim 14 further comprising an audio alert engine operatively connected to said server, said audio alert engine capable of determining whether a portion of the captured streaming audio signal matches a predetermined sound type and, if so, alerting the predetermined user to the presence of the predetermined sound type. ### Claim 16 (depends on 14) The threat detection and notification system of claim 14, wherein said microphone unit is operatively connected to said platform. ### Claim 17 (depends on 14) The threat detection and notification system of claim 14, wherein said microphone unit is capable of being positioned on the predetermined user. ### Claim 18 A threat detection and notification system comprising: a LIDAR unit operatively connected to a platform, said LIDAR unit capable of detecting a first object in its field of view during a first and subsequent refresh scans, and outputting point cloud data representative of the first object detected in a refresh frame corresponding to every refresh scan; a camera unit operatively connected to said platform, said camera unit capable of capturing streaming video data having a plurality of individual video frames; a video interface operatively connected to said camera unit, said video interface capable of receiving the captured streaming video data; a server operatively connected to said LIDAR unit and said video interface, said server capable of receiving the point cloud data and determining, for the first object detected within each refresh frame, a predetermined set of object-specific attributes, including the first object's object type, said server further capable of receiving the captured streaming video data; a user control interface operatively connected to said server, said user control interface capable of creating a watch zone defining an area of interest less than said LIDAR unit's field of view, said user control interface further capable of defining a plurality of watch mode parameters associated with said watch zone, wherein at least one watch mode parameter includes object type; a LIDAR alert engine operatively connected to said server, said LIDAR alert engine capable of determining whether the first object detected in each refresh frame is located within the watch zone, and, if the first object is within the watch zone, calculating at least one indicant of motion of the first object, and comparing the object type and the at least one indicant of motion of the first object to the defined watch mode parameters, wherein said LIDAR alert engine is further capable of alerting a predetermined user that the first object is within the watch zone and in the event the aforementioned comparison indicates an alert condition; and a video alert engine operatively connected to said server, said video alert engine capable of determining whether a second object captured in a video frame matches an object from a list of predetermined objects, and, if so, alerting the predetermined user to the presence of the second object. ### Claim 19 (depends on 18) The threat detection and notification system of claim 18, wherein the object type includes “person”, “vehicle”, “other” and/or “officer”. ### Claim 20 A threat detection and notification system comprising: a LIDAR unit operatively connected to a platform, said LIDAR unit capable of detecting a first object in its field of view during a first and subsequent refresh scans, and outputting point cloud data representative of the first object detected in a refresh frame corresponding to every refresh scan; a camera unit operatively connected to said platform, said camera unit capable of capturing streaming video data having a plurality of individual video frames; a microphone unit capable of capturing streaming audio signal; an audio/video interface operatively connected to said camera unit and said microphone unit, said audio/video interface capable of receiving the captured streaming video data and the captured streaming audio signal; a server operatively connected to said LIDAR unit and said audio/video interface, said server capable of receiving the point cloud data and determining, for the first object detected within each refresh frame, a predetermined set of object-specific attributes, including the first object's object type, said server further capable of receiving the captured streaming video data and the captured streaming audio signals; a user control interface operatively connected to said server, said user control interface capable of creating a watch zone defining an area of interest less than said LIDAR unit's field of view, said user control interface further capable of defining a plurality of watch mode parameters associated with said watch zone, wherein at least one watch mode parameter includes object type; a LIDAR alert engine operatively connected to said server, said LIDAR alert engine capable of determining whether the first object detected in each refresh frame is located within the watch zone, and, if the first object is within the watch zone, calculating at least one indicant of motion of the first object, and comparing the object type and the at least one indicant of motion of the first object to the defined watch mode parameters, wherein said LIDAR alert engine is further capable of alerting a predetermined user that the first object is within the watch zone and in the event the aforementioned comparison indicates an alert condition; a video alert engine operatively connected to said server, said video alert engine capable of determining whether a second object captured in a video frame matches an object from a list of predetermined objects, and, if so, alerting the predetermined user to the presence of the second object; and an audio alert engine operatively connected to said server, said audio alert engine capable of determining whether a portion of the captured streaming audio signal matches a predetermined sound type and, if so, alerting the predetermined user to the presence of the predetermined sound type.