Patents by Inventor Zhizhong Yan
Zhizhong Yan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240017731Abstract: System, methods, and computer-readable media for a calibration check process of sensors on an autonomous vehicle (AV) via a drive-through environment mapped with a series of targets. The targets are used to check the calibration of the sensors on the AV as a quality check before the AV is determined fit to drive autonomously. Supervising a calibration process that collects data from the sensors on the AV based on exposure to a series of targets or augmented camera targets. The collected data may be used for extrinsic calibration aimed to determine that extrinsic parameters that define the rigid relationship between sensors are in set checker bounds.Type: ApplicationFiled: July 12, 2022Publication date: January 18, 2024Inventors: Juan Fasola, Ankit Rohatgi, Alexandri Zavodny, Zhizhong Yan, Pragya Agrawal, Mayur Shah, Syed Aziz Enam, Morgan Wessel, Joseph Thibeault
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Publication number: 20240010233Abstract: The present technology pertains to determining whether traffic signal cameras of an AV are miscalibrated. One technique for determining if a given traffic signal camera is miscalibrated includes obtaining an image from a traffic signal camera, marking the location of a traffic signal in the image with a bounding box, and determining if the light sources of the traffic signal are within the bounding box. If not, an alternate reason check is performed to determine whether an alternate reason exists for why the light source of the traffic signal is not within the bounding box. If no such reason exists, then the traffic signal camera may be miscalibrated. An additional calibration check may be performed using images from two traffic signal cameras of the AV each having four common light sources, and performing a homographic computation using the location of the light sources in the images.Type: ApplicationFiled: July 7, 2022Publication date: January 11, 2024Inventors: Himil Narayan Sheth, Zhizhong Yan
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Publication number: 20230194659Abstract: The subject disclosure relates to techniques for sensor calibration based on determining a curvature of a surface of a target. A process of the disclosed technology can include steps of receiving sensor data captured by the two or more sensors, wherein the sensor data includes multiple views of one or more targets in a scene, identifying the one or more targets based on the sensor data, and determining a curvature of a surface of each of the one or more targets based on the sensor data. The process can further include performing a calibration of the two or more sensors based on the curvature of the surface of each of the one or more targets in the sensor data. Systems and machine-readable media are also provided.Type: ApplicationFiled: December 22, 2021Publication date: June 22, 2023Inventor: Zhizhong Yan
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Publication number: 20230194315Abstract: The subject disclosure relates to techniques for determining a positioning error of a rotary encoder. A process of the disclosed technology can include steps of receiving measurement data including an angle and timestamp measured at each of a plurality of positions during a rotation of a rotary encoder, determining an angular velocity, at each of the plurality of positions, based on the corresponding measurement data, and determining a positioning error of the rotary encoder based on the angular velocity at each of the plurality of positions. Systems and machine-readable media are also provided.Type: ApplicationFiled: December 22, 2021Publication date: June 22, 2023Inventor: Zhizhong Yan
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Patent number: 11345277Abstract: Various technologies described herein pertain to controlling an autonomous vehicle to provide indicators that signal a driving intent of the autonomous vehicle. The autonomous vehicle includes a plurality of sensor systems that generate a plurality of sensor signals, a notification system, and a computing system. The computing system determines that the autonomous vehicle is to execute a maneuver that will cause the autonomous vehicle to traverse a portion of a driving environment of the autonomous vehicle. The computing system predicts that a person in the driving environment is to traverse the portion of the driving environment based upon the plurality of sensor signals. The computing system then controls the notification system to output a first indicator indicating that the autonomous vehicle plans to yield to the person or a second indicator indicating that the autonomous vehicle plans to execute the maneuver prior to the person traversing the portion of the driving environment.Type: GrantFiled: October 16, 2018Date of Patent: May 31, 2022Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Eric Lujan, Shiva Ghose, Elliot Branson, Peter Ming Gao, Zhichang Yan, Zhizhong Yan
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Patent number: 11261058Abstract: The arrangement comprises at least one travelling cable, a guide rail extending from a pit floor at least to a middle of an elevator shaft, an intermediate fixing point positioned in connection with the guide rail, the at least one travelling cable being fixedly attached in said intermediate fixing point, a travelling cable keeper being movably supported on the guide rail so that the travelling cable keeper is movable upwards and downwards along the guide rail, the at least one travelling cable being movably supported in support points on the travelling cable keeper, a path of the at least one travelling cable through the support points in the travelling cable keeper being curved, the at least one travelling cable being movable through the support points.Type: GrantFiled: June 20, 2019Date of Patent: March 1, 2022Assignee: Kone CorporationInventors: Zhizhong Yan, Antti I. Maki, Jaakko Kalliomaki, Takeshi Ogata
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Patent number: 11146783Abstract: Systems and methods provide for adaptive real-time streaming of Autonomous Vehicle (AV) data. In some embodiments, the AV can receive a request from the remote computing system for real-time streaming of a first type of AV data and adaptively streaming a second type of AV data when one or more streaming conditions are satisfied. The first type of AV data and the second type of AV data can be captured as raw data by sensors, actuators, transducers, and other components of the AV. The AV can stream the first type of AV data to the remote computing system in real-time for a first time period. When the AV determines the streaming conditions are satisfied, the AV can automatically determine the second type of AV data to stream to the remote computing system in real-time for a second time period.Type: GrantFiled: August 16, 2019Date of Patent: October 12, 2021Assignee: GM Cruise Holdings, LLCInventors: Zhizhong Yan, Adam Cadien
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Publication number: 20210051317Abstract: Systems and methods provide for adaptive real-time streaming of Autonomous Vehicle (AV) data. In some embodiments, the AV can receive a request from the remote computing system for real-time streaming of a first type of AV data and adaptively streaming a second type of AV data when one or more streaming conditions are satisfied. The first type of AV data and the second type of AV data can be captured as raw data by sensors, actuators, transducers, and other components of the AV. The AV can stream the first type of AV data to the remote computing system in real-time for a first time period. When the AV determines the streaming conditions are satisfied, the AV can automatically determine the second type of AV data to stream to the remote computing system in real-time for a second time period.Type: ApplicationFiled: August 16, 2019Publication date: February 18, 2021Applicant: GM Cruise Holdings LLCInventors: Zhizhong YAN, Adam CADIEN
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Patent number: 10717629Abstract: The present invention relates to a machinery brake for an elevator. The machinery brake comprises a frame part comprising an electromagnet and an armature part, wherein the machinery brake further comprising an inductive proximity sensor mounted to one of the following: the frame part, the armature part and a target mounted to the other of the following: the frame part, armature part. The inductive proximity sensor and the target are mounted with respect to each other so that in a normal state of the machinery brake the target resides within an operational area of the inductive proximity sensor and in an abnormal state of the machinery brake the target resides at least partly outside the operational area of the inductive proximity sensor. The invention also relates to a method therein.Type: GrantFiled: April 12, 2017Date of Patent: July 21, 2020Assignee: KONE CORPORATIONInventors: Henri Vakkamäki, Janne Rossi, Timo Korhonen, Zhizhong Yan
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Publication number: 20200114813Abstract: Various technologies described herein pertain to controlling an autonomous vehicle to provide indicators that signal a driving intent of the autonomous vehicle. The autonomous vehicle includes a plurality of sensor systems that generate a plurality of sensor signals, a notification system, and a computing system. The computing system determines that the autonomous vehicle is to execute a maneuver that will cause the autonomous vehicle to traverse a portion of a driving environment of the autonomous vehicle. The computing system predicts that a person in the driving environment is to traverse the portion of the driving environment based upon the plurality of sensor signals. The computing system then controls the notification system to output a first indicator indicating that the autonomous vehicle plans to yield to the person or a second indicator indicating that the autonomous vehicle plans to execute the maneuver prior to the person traversing the portion of the driving environment.Type: ApplicationFiled: October 16, 2018Publication date: April 16, 2020Inventors: Eric Lujan, Shiva Ghose, Elliot Branson, Peter Ming Gao, Zhichang Yan, Zhizhong Yan
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Publication number: 20200079622Abstract: The arrangement comprises at least one travelling cable, a guide rail extending from a pit floor at least to a middle of an elevator shaft, an intermediate fixing point positioned in connection with the guide rail, the at least one travelling cable being fixedly attached in said intermediate fixing point, a travelling cable keeper being movably supported on the guide rail so that the travelling cable keeper is movable upwards and downwards along the guide rail, the at least one travelling cable being movably supported in support points on the travelling cable keeper, a path of the at least one travelling cable through the support points in the travelling cable keeper being curved, the at least one travelling cable being movable through the support points.Type: ApplicationFiled: June 20, 2019Publication date: March 12, 2020Inventors: Zhizhong YAN, Antti I. MAKI, Jaakko KALLIOMAKI, Takeshi OGATA
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Patent number: 10479646Abstract: A machinery brake of an elevator includes a frame part including an electromagnet, an armature part, an inductive proximity sensor indirectly mounted to one of the following: the frame part, the armature part, and a target mounted to another of the following: the frame part, armature part. The machinery brake further includes, for establishing the indirect mounting: a temperature change compensation device mounted between the inductive proximity sensor and one of the following: the frame part, the armature part. Some aspects relate to a method for compensating a change in switching point of an inductive proximity sensor.Type: GrantFiled: April 19, 2017Date of Patent: November 19, 2019Assignee: KONE CORPORATIONInventors: Henri Vakkamäki, Janne Rossi, Timo Korhonen, Zhizhong Yan
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Publication number: 20170313549Abstract: A machinery brake of an elevator includes a frame part including an electromagnet, an armature part, an inductive proximity sensor indirectly mounted to one of the following: the frame part, the armature part, and a target mounted to another of the following: the frame part, armature part. The machinery brake further includes, for establishing the indirect mounting: a temperature change compensation device mounted between the inductive proximity sensor and one of the following: the frame part, the armature part. Some aspects relate to a method for compensating a change in switching point of an inductive proximity sensor.Type: ApplicationFiled: April 19, 2017Publication date: November 2, 2017Applicant: KONE CorporationInventors: Henri Vakkamäki, Janne Rossi, Timo Korhonen, Zhizhong Yan
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Publication number: 20170313550Abstract: The present invention relates to a machinery brake for an elevator. The machinery brake comprises a frame part comprising an electromagnet and an armature part, wherein the machinery brake further comprising an inductive proximity sensor mounted to one of the following: the frame part, the armature part and a target mounted to the other of the following: the frame part, armature part. The inductive proximity sensor and the target are mounted with respect to each other so that in a normal state of the machinery brake the target resides within an operational area of the inductive proximity sensor and in an abnormal state of the machinery brake the target resides at least partly outside the operational area of the inductive proximity sensor. The invention also relates to a method therein.Type: ApplicationFiled: April 12, 2017Publication date: November 2, 2017Applicant: KONE CorporationInventors: Henri VAKKAMÄKI, Janne ROSSI, Timo KORHONEN, Zhizhong YAN
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Patent number: 9193567Abstract: Method in the manufacture of an elevator, in which method the parts of a platform, more particularly its support structure, are used for forming the structure that supports the machinery of the final machine room of the elevator, which platform has earlier been in its position in a position disposed lower in the elevator hoistway, and which platform was used in the aforementioned lower disposed position for supporting the machinery.Type: GrantFiled: April 23, 2012Date of Patent: November 24, 2015Assignee: KONE CORPORATIONInventors: Mark Peacock, Zhizhong Yan, Matti Eskelinen, Johannes De Jong
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Patent number: 8881872Abstract: In a method in the use of a construction-time elevator, at least two lifts are performed. In each of the lifts, the supporting platform is lifted higher in the elevator hoistway with the hoisting device supported by the support structure so as to extend the operating range of the elevator car to reach higher in the elevator hoistway. A second support structure and a second hoisting device, which are above the support structure, are used between the lifts of the supporting platform, for moving the working platform in the elevator hoistway under construction between the second support structure and the support structure, and for lifting the support structure upwards in the elevator hoistway.Type: GrantFiled: December 15, 2010Date of Patent: November 11, 2014Assignee: Kone CorporationInventors: Mark Peacock, Jussi Perälä, Matti Eskelinen, Zhizhong Yan
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Patent number: 8636115Abstract: An elevator arrangement includes an elevator hoistway, an elevator car, and a movable supporting platform for supporting the elevator components in the elevator hoistway. The supporting platform includes a supporting frame. The supporting frame includes a plurality of beams that are rigidly fixed to each other. The plurality of beams are arranged such that towards each of all four lateral directions of the supporting platform points at least one beam end of the supporting frame, at which beam end is a movable support element belonging to a plurality of movable support elements movable between a position extended from the platform towards the side and a position retracted towards the platform.Type: GrantFiled: April 11, 2012Date of Patent: January 28, 2014Assignee: Kone CorporationInventors: Mark Peacock, Zhizhong Yan
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Patent number: 8616340Abstract: Method in the use of a construction-time elevator, in which method the supporting platform that supports the elevator car of the elevator is lifted higher in the elevator hoistway with a hoisting device supported on a support structure. In the method the supporting platform is suspended from the support structure via at least one hoisting device and rope comprised in the hoisting device and the supporting platform is lifted upwards in the elevator hoistway with a lifting ratio of 1:x, where x is greater than 1.Type: GrantFiled: September 6, 2011Date of Patent: December 31, 2013Assignee: Kone CorporationInventors: Mark Peacock, Matti Eskelinen, Zhizhong Yan
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Publication number: 20120272612Abstract: Method in the manufacture of an elevator, in which method the parts of a platform, more particularly its support structure, are used for forming the structure that supports the machinery of the final machine room of the elevator, which platform has earlier been in its position in a position disposed lower in the elevator hoistway, and which platform was used in the aforementioned lower disposed position for supporting the machinery.Type: ApplicationFiled: April 23, 2012Publication date: November 1, 2012Applicant: KONE CORPORATIONInventors: Mark Peacock, Zhizhong Yan, Matti Eskelinen, Johannes De Jong
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Publication number: 20120217101Abstract: An elevator arrangement includes an elevator hoistway, an elevator car, and a movable supporting platform for supporting the elevator components in the elevator hoistway. The supporting platform includes a supporting frame. The supporting frame includes a plurality of beams that are rigidly fixed to each other. The plurality of beams are arranged such that towards each of all four lateral directions of the supporting platform points at least one beam end of the supporting frame, at which beam end is a movable support element belonging to a plurality of movable support elements movable between a position extended from the platform towards the side and a position retracted towards the platform.Type: ApplicationFiled: April 11, 2012Publication date: August 30, 2012Applicant: KONE CORPORATIONInventors: Mark Peacock, Zhizhong Yan