# US 10,863,926 B2 · Fall detection device and method for controlling thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,863,926 B2 - Document ID: US10863926B2 - Status: Granted - Kind: B2 - Application number: 15/763,160 - Filed: 2016-09-12 - Published: 2018-09-20 - Granted: 2020-12-15 - Earliest claimed: 2015-09-25 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Han-sung Lee; Jae-geol Cho; Moo-rim Kim; Chang-hyun Kim - Web page: https://patentgrep.com/patent/US10863926B2 ## CPC - A61B 5/1117: {Fall detection} - A61B 5/0022: {Monitoring a patient using a global network, e.g. telephone networks, internet} - A61B 5/11: Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb {(A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721)} - A61B 5/318: Heart-related electrical modalities, e.g. electrocardiography [ECG] - A61B 5/6803: {Head-worn items, e.g. helmets, masks, headphones or goggles} - A61B 5/688: {using adhesives} - A61B 5/746: {Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms} - G01P 15/0802: {Details} - G08B 21/043: {detecting an emergency event, e.g. a fall} - G08B 21/0446: {worn on the body to detect changes of posture, e.g. a fall, inclination, acceleration, gait} - G16H 40/67: for remote operation - A61B 5/0245: by using sensing means generating electric signals, {i.e. ECG signals} - A61B 2562/0219: Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches - G01P 15/18: in two or more dimensions - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G}) - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - G16H: HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA ## Abstract The present invention relates to a fall detection device, which includes a sensor attached to a user and sensing a motion of the fall detection device in a plurality of coordinate axial directions; an output section capable of outputting fall information of a user; and a controller determining that the user falls down when acceleration in a first axial direction among the plurality of coordinate axial directions is changed from a positive value to a negative value based on the motion sensed by the sensor, and controlling the fall information to be output. ## Claims ### Claim 1 A fall detection device comprising: at least one sensor which is attached to a user and senses a motion of the fall detection device in a plurality of coordinate axial directions comprising a first axial direction and a second axial direction perpendicular to the first axial direction; an output section which outputs fall information of the user; and a processor which: determines that the user falls down based on obtaining that acceleration in the first axial direction is changed from a positive value to a negative value, and acceleration in the second axial direction is lower than a first lower limit before impact occurs to the user while the acceleration in the first axial direction is changed from the positive value to the negative value based on the sensed motion of the fall detection device, and controls the output section to output the fall information that the user falls down. ### Claim 2 (depends on 1) The fall detection device according to claim 1, wherein the first axial direction is perpendicular to a ground. ### Claim 3 (depends on 1) The fall detection device according to claim 1, wherein the processor determines that the impact occurs to the user before acceleration of motion components on first axis-second axis-third axis among a plurality of coordinate axes equals to a first upper limit based on the acceleration of motion components on the first axis-second axis-third axis being higher than the first upper limit. ### Claim 4 (depends on 3) The fall detection device according to claim 3, wherein the processor determines that the user falls down based on obtaining that acceleration of a motion component on a second axis-third axis plane is lower than or equal to a second lower limit after the impact occurs, in the case where the acceleration in the first axial direction is changed from the positive value to the negative value. ### Claim 5 (depends on 4) The fall detection device according to claim 4, wherein it is determined that the user falls down based on obtaining that time elapsed until the acceleration of the motion component on the second axis-third axis plane reaches the second lower limit after the impact occurs is within a first threshold. ### Claim 6 (depends on 1) The fall detection device according to claim 1, wherein the output section comprises a communicator for transmitting the fall information to an external device. ### Claim 7 A method for a fall detection device, comprising: sensing, by at least one sensor, a motion of the fall detection device in a plurality of coordinate axial directions comprising a first axial direction and a second axial direction perpendicular to the first axial direction while the fall detection device is attached to a user; determining, by a processor, that the user falls down based on obtaining that acceleration in the first axial direction is changed from a positive value to a negative value, and acceleration in the second axial direction is lower than a first lower limit before impact occurs to the user while the acceleration in the first axial direction is changed from the positive value to the negative value based on the sensed motion of the fall detection device; and outputting, by an output section, fall information that the user falls down. ### Claim 8 (depends on 7) The method according to claim 7, wherein the first axial direction is perpendicular to a ground. ### Claim 9 (depends on 7) The method according to claim 7, wherein the determining that the user falls down comprises determining that the impact occurs to the user before acceleration of motion components on first axis-second axis-third axis among a plurality of coordinate axes equals to a first upper limit based on the acceleration of motion components on the first axis-second axis-third axis being higher than the first upper limit. ### Claim 10 (depends on 9) The method according to claim 9, wherein the determining that the user falls down comprises determining that the user falls down based on obtaining that acceleration of a motion component on a second axis-third axis plane is lower than or equal to a second lower limit after the impact occurs, in the case where the acceleration in the first axial direction is changed from the positive value to the negative value. ### Claim 11 (depends on 10) The method according to claim 10, wherein the determining that the user falls down comprises determining that the user falls down based on obtaining that time elapsed until the acceleration of the motion component on the second axis-third axis plane reaches the second lower limit after the impact occurs is within a first threshold. ### Claim 12 (depends on 7) The method according to claim 7, further comprising transmitting the fall information to an external device.