# US 12,006,185 B2 · Continuous quality monitoring of a conveyance system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,006,185 B2 - Document ID: US12006185B2 - Status: Granted - Kind: B2 - Application number: 16/165,856 - Filed: 2018-10-19 - Published: 2020-04-23 - Granted: 2024-06-11 - Earliest claimed: 2018-10-19 - Assignees: Otis Elevator Company - Applicants: Otis Elevator Company - Inventors: Soumalya Sarkar; Teems E. Lovett; Paul R. Braunwart; Sudarshan N. Koushik; Nikola Trcka; George Scott Copeland; George S. Ekladious; Peter Liaskas; Sandeep Sudi - Web page: https://patentgrep.com/patent/US12006185B2 ## CPC - B66B 5/0006: {Monitoring devices or performance analysers (B66B5/02 takes precedence)} - B66B 5/0025: {for maintenance or repair} - B66B 1/28: electrical (detecting excessive speed B66B5/04 {; control of electrical motor H02P}) - B66B 1/3461: {between the elevator control system and remote or mobile stations} - B66B 5/0037: {Performance analysers} - B66B: ELEVATORS; ESCALATORS OR MOVING WALKWAYS ({apparatus for raising or lowering persons on theatrical stages or the like A63J5/12} ; funicular railbound systems with rigid ground-supported tracks and cable traction, e.g. cliff railways, B61B9/00; arrangements of ammunition handlers in vessels B63G3/00; hoists, lifts, or conveyors for loading or unloading in general B65G; braking or detent devices controlling normal movements of winding drums or barrels B66D; ship-lifting devices E02C; garages for many vehicles with mechanical means for lifting vehicles E04H6/12; hoists for feeding ammunition or projectiles to launching apparatus or to loading mechanisms F41A9/00) ## Abstract A monitoring system includes one or more detection devices, a communication device, and an analytics system. The one or more detection devices generate, at a conveyance system, one or more data streams describing the ride of the conveyance system, where the data streams include at least one of vibration data and audio data. The communication device transmits sensor data based on the one or more data streams. The analytics system receives the sensor data from the communication device and, based on the sensor data, determines a ride quality of the conveyance system. ## Claims ### Claim 1 A monitoring system comprising: one or more detection devices configured to generate, at an elevator system, one or more data streams describing a ride of the elevator system and comprising vibration data and audio data, wherein the one or more detection devices comprise a vibration sensor configured to generate the vibration data and a microphone configured to capture the audio data; a communication device configured to transmit sensor data based on the one or more data streams; and an analytics system remote from the elevator system, wherein the analytics system is configured to receive the sensor data from the communication device and to determine a ride quality of the elevator system, based on the sensor data; wherein: the vibration sensor is configured to be placed in a sleep mode and the active mode, such that the vibration sensor measures vibrations during the active mode but not during the sleep mode, wherein the active mode of the vibration sensor is triggered in response to a first trigger event; and the microphone is configured to be placed in a sleep mode and the active mode, such that the microphone captures audio during the active mode but not during the sleep mode; wherein the active mode of the microphone is triggered in response to a second trigger event different than the first trigger event, the second trigger event being the detection of no passengers present in an elevator car. ### Claim 2 (depends on 1) The monitoring system of claim 1, further comprising: a sensor of trigger events; and wherein the vibration sensor is further configured to: be activated upon detection of the first trigger event by the sensor of trigger events; and generate the vibration data in the one or more data streams responsive to the first trigger event, wherein the vibration data describes vibrations of the elevator system. ### Claim 3 (depends on 1) The monitoring system of claim 1, further comprising: a sensor of trigger events; and wherein the microphone is further configured to: be activated upon detection of the second trigger event by the sensor of trigger events; and capture the audio data in the one or more data streams responsive to the second trigger event, wherein the audio data describes audio during a run of the elevator system. ### Claim 4 (depends on 1) The monitoring system of claim 1, wherein the audio data describes audio during a run of the elevator system and audio of a run of a second elevator system within a range of the microphone. ### Claim 5 (depends on 1) The monitoring system of claim 1, further comprising a processing unit configured to perform local preprocessing, at the elevator system, on the one or more data streams to generate the sensor data. ### Claim 6 (depends on 5) The monitoring system of claim 5, wherein the processing unit is further configured to locally perform calibration at the elevator system, and wherein the calibration comprises determining one or more transformations between the sensor data and a plurality of measurements taken by a measurement device. ### Claim 7 (depends on 1) The monitoring system of claim 1, wherein the analytics system is further configured to learn, by machine learning based on historical sensor data, to recognize the ride quality of the elevator system. ### Claim 8 (depends on 1) The monitoring system of claim 1, wherein the analytics system is further configured to automatically perform a remedial action responsive to the ride quality of the elevator system. ### Claim 9 A monitoring method comprising: generating, at an elevator system, one or more data streams describing a ride of the elevator system and comprising vibration data generated by a vibration sensor and audio data captured by a microphone; detecting a trigger event; triggering an active mode in response to the trigger event, wherein the vibration sensor measures vibrations during the active mode and the microphone captures audio during the active mode; transmitting, to an analytics system remote from the elevator system, sensor data based on the one or more data streams; and determining a ride quality of the elevator system, based on the sensor data; wherein the vibration sensor is configured to be placed in a sleep mode and the active mode, such that the vibration sensor measures vibrations during the active mode but not during the sleep mode, wherein the active mode of the vibration sensor is triggered in response to a first trigger event; wherein the microphone is configured to be placed in a sleep mode and the active mode, such that the microphone captures audio during the active mode but not during the sleep mode, wherein the active mode of the microphone is triggered in response to a second trigger event different than the first trigger event, the second trigger event being the detection of no passengers present in an elevator car. ### Claim 10 (depends on 9) The monitoring method of claim 9, wherein the monitoring method further comprises: detecting, by a sensor of trigger events, the first trigger event; and generating the vibration data in the one or more data streams responsive to the first trigger event, wherein the vibration data describes vibrations of the elevator system. ### Claim 11 (depends on 9) The monitoring method of claim 9, wherein the monitoring method further comprises: detecting, by a sensor of trigger events, the second trigger event; and capturing the audio data in the one or more data streams responsive to the second trigger event, wherein the audio data describes audio during a run of the elevator system. ### Claim 12 (depends on 9) The monitoring method of claim 9, further comprising performing local preprocessing, at the elevator system, on the one or more data streams to generate the sensor data. ### Claim 13 A computer-program product for monitoring a elevator system, the computer-program product comprising a non-transitory computer-readable storage medium having program instructions embodied therewith, the program instructions executable by a processing unit to cause the processing unit to perform a method comprising: generating, at the elevator system, one or more data streams describing a ride of the elevator system and comprising of vibration data generated by a vibration sensor and audio data captured by a microphone; detecting a trigger event; triggering an active mode in response to the trigger event, wherein the vibration sensor measures vibrations during the active mode and the microphone captures audio during the active mode; transmitting, to an analytics system remote from the elevator system, sensor data based on the one or more data streams; and determining a ride quality of the elevator system, based on the sensor data; wherein the vibration sensor is configured to be placed in a sleep mode and the active mode, such that the vibration sensor measures vibrations during the active mode but not during the sleep mode, wherein the active mode of the vibration sensor is triggered in response to a first trigger event; wherein the microphone is configured to be placed in a sleep mode and the active mode, such that the microphone captures audio during the active mode but not during the sleep mode, wherein the active mode of the microphone is triggered in response to a second trigger event different than the first trigger event, the second trigger event being the detection of no passengers present in an elevator car. ### Claim 14 (depends on 13) The computer-program product of claim 13, wherein the method further comprises: detecting, by a sensor of trigger events, the first trigger event; and generating the vibration data in the one or more data streams responsive to the first trigger event, wherein the vibration data describes vibrations of the elevator system. ### Claim 15 (depends on 13) The computer-program product of claim 13, wherein the method further comprises: detecting, by a sensor of trigger events, the second trigger event; and capturing the audio data in the one or more data streams responsive to the second trigger event, wherein the audio data describes audio during a run of the elevator system. ### Claim 16 (depends on 13) The computer-program product of claim 13, the method further comprising performing local preprocessing, at the elevator system, on the one or more data streams to generate the sensor data.