Patents by Inventor Jun Pei

Jun Pei 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).

  • Publication number: 20190162858
    Abstract: A lidar system includes a laser source, an emission lens configured to collimate and direct a laser beam emitted by the laser source, a receiving lens configured to receive and focus a return laser beam reflected off of one or more objects to a return beam spot at a focal plane of the receiving lens, and a detector including a plurality of photo sensors arranged as an array at the focal plane of the receiving lens. Each photo sensor has a respective sensing area and is configured to receive and detect a respective portion of the return laser beam. The lidar system further includes a processor configured to determine a respective time of flight for each respective portion of the return laser beam, and construct a three-dimensional image of the one or more objects based on the respective time of flight for each respective portion of the return laser beam.
    Type: Application
    Filed: November 28, 2018
    Publication date: May 30, 2019
    Applicant: Cepton Technologies, Inc.
    Inventors: Mark A. McCord, Jun Pei, Dongyi Liao
  • Publication number: 20190120940
    Abstract: A scanning lidar system includes a fixed frame, a first platform, and a first electro-optic assembly. The first electro-optic assembly includes a first laser source and a first photodetector mounted on the first platform. The scanning lidar system further includes a first flexure assembly flexibly coupling the first platform to the fixed frame, and a drive mechanism configured to scan the first platform with respect to the fixed frame in two dimensions in a plane substantially perpendicular to an optical axis of the lidar system. The scanning lidar system further includes a controller coupled to the drive mechanism. The controller is configured to cause the drive mechanism to scan the first platform in a first direction with a first frequency and in a second direction with a second frequency. The second frequency is similar but not identical to the first frequency.
    Type: Application
    Filed: May 4, 2018
    Publication date: April 25, 2019
    Applicant: Cepton Technologies, Inc.
    Inventors: Jun Pei, Mark A. McCord, Roger David Cullumber, Yupeng Cui, Dongyi Liao
  • Publication number: 20190095876
    Abstract: The present invention discloses a method and system for determining a maintenance policy of a complex forming device. The method and system include: establishing a performance judgement standard; obtaining actual operation data; and determining a performance stage of the complex forming device, and determining the maintenance policy of the complex forming device. The establishing a performance judgement standard includes allocating data located at different performance stages to corresponding working condition units; setting data located at a normal performance stage to normal reference data, and calculating, by using a shortest path algorithm, distances between operation data of different working condition units in different functional modules and the normal reference data, to obtain performance statuses of the different functional modules.
    Type: Application
    Filed: September 21, 2018
    Publication date: March 28, 2019
    Inventors: Qiang ZHANG, Wanying WANG, Zhanglin PENG, Xiaonong LU, Jun PEI, Yu FAN, Jianwen YAN
  • Patent number: 10231910
    Abstract: An oral care composition comprising 20% to 75% of water by weight of the composition; 25% to 60% of a calcium-containing abrasive by weight of the composition; 0.001% to 5% of a flavorant by weight of the composition; and a rheology profile characterized by at least one of the following parameters: 10*K (Pa·s) value from 100 to 3,000; (?10000*)n (rate index) value from ?5000 to ?1300; 10*Yield Stress value from 100 to 3,500; Average G? value from 100 to 2000; or Average G? value 100 to 1000.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: March 19, 2019
    Assignee: The Procter & Gamble Company
    Inventors: Zhong Lei, Jun Pei, Ross Strand, Hongmei Yang, Yan Zhang
  • Publication number: 20190080270
    Abstract: The present invention disclose a parallel machine batch scheduling method and system based on an improved artificial bee colony algorithm in a deterioration situation. With this method, a near-optimal solution for the parallel machine batch scheduling problem with deteriorating jobs and maintenance consideration can be obtained. The model of the present invention is derived from an actual production process with considerations of machine maintenance and batching as well as additional processing and maintenance time for jobs and machines over time in actual production. According to the present invention, the settlement of this problem is conducive to providing reliable decision support for the production and maintenance of an enterprise in complex real production conditions, thus reducing enterprise operation costs, increasing enterprise productivity, and promoting building of a modern smart factory of the enterprise.
    Type: Application
    Filed: September 10, 2018
    Publication date: March 14, 2019
    Inventors: Xinbao Liu, Jun Pei, Shaojun Lu, Min Kong, Xiaofei Qian, Zhiping Zhou
  • Publication number: 20190079975
    Abstract: The present invention discloses a scheduling method and system based on a hybrid variable neighborhood search and gravitational search algorithm. The method includes: 1 setting parameters of the algorithm; 2 initializing an initial solution of the algorithm; 3 performing local search based on a gravitational search algorithm (GSA); 4 updating the initial solution; 5 determining whether an algorithm termination condition is satisfied; if yes, outputting the global optimal solution searched for by the algorithm, otherwise, returning to the step 3. According to the present invention, a near-optimal solution for the continuous batch processing problem based on position learning effect and linear starting time can be obtained, so that an enterprise can make full use of production resources thereof to the utmost extent, and thus reduce production costs and improve the enterprise service level and the customer satisfaction level.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Inventors: Jun PEI, Wenjuan FAN, Xinbao LIU, Qiang ZHANG, Min KONG, Shaojun LU
  • Publication number: 20190080271
    Abstract: The present invention discloses a coordinated production and transportation scheduling method and system based on an improved tabu search algorithm, and a storage medium. The method includes batching jobs, initializing algorithm parameters, generating an initial solution, generating a neighborhood solution set, performing mutation, crossover and selection on individuals, determining a candidate solution set; calculating a fitness value of an individual, updating the candidate solution set; updating a tabu list, and determining whether an algorithm termination condition is satisfied; if yes, outputting the global optimal solution; otherwise, returning to the step 4. The present invention is mainly aimed at the coordinated production and transportation batch scheduling problem with multiple manufacturers.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Inventors: Jun PEI, Qingru SONG, Xinbao LIU, Shaojun LU, Qiang ZHANG, Wenjuan FAN, Min KONG
  • Publication number: 20190080244
    Abstract: The present invention relates to a production batch scheduling method and system based on improved variable neighborhood search and differential evolution algorithms as well as a storage medium. The method is executed by a computer, and includes: setting algorithm parameters; building a neighborhood structure; initializing a population; determining an initial solution; calculating a fitness value; locally searching; selecting a male parent; performing individual recessive variation; regenerating the population; updating the initial solution; updating a neighborhood structure of algorithmic search; and judging whether a terminal condition of algorithm execution is met, outputting a global optimal solution of the algorithmic search if so, otherwise, returning to Step 6. The present invention can obtain an approximate optimal solution in regard to a coordinated batch scheduling problem of production and transportation in the case of a manufacturer single machine based on a differential workpiece.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Inventors: Jun PEI, Qingru SONG, Xinbao LIU, Shaojun LU, Qiang ZHANG, Wenjuan FAN
  • Publication number: 20190041839
    Abstract: Disclosed is an apparatus for troubleshooting fault component in equipment and a method thereof. The device includes portions for building a fault-component-sensor Bayesian belief network model by acquiring component state-abnormal and data of fault maintenance of the equipment, and for calculating probabilities of actual component abnormality when a sensor connected with an component detects component abnormality based on the model; and arranging the probabilities in a descending order to obtain the arranged probabilities of actual component abnormality, and the top-arranged component being the one to be troubleshot first. Namely, a relational expression among the fault, the component and the sensor may be systematically built by adopting the method or the apparatus provided by the present disclosure, and the most-likely-failing component in an equipment may be quickly detected according to the expression, thereby improving troubleshooting efficiency.
    Type: Application
    Filed: August 3, 2018
    Publication date: February 7, 2019
    Inventors: Qiang ZHANG, Shanlin YANG, Wanying WANG, Zhanglin PENG, Xiaonong LU, Jun PEI
  • Publication number: 20190041809
    Abstract: The present invention discloses an automatic loading system and method for service functions of a hydraulic machine. The loading system includes an acquiring portion for acquiring i service function component chains of a hydraulic machine, a determining portion for determining a demand sequence of the service function component chains used by a user within each preset time period in a measuring cycle based on the acquired service function component chains and a deciding portion for automatically loading a service function of the hydraulic machine in a next moment according to the demand sequence based on a current input operation command of the user. By adopting the automatic loading system or method provided by the present invention, response speed of intelligent services of the hydraulic machine can be improved.
    Type: Application
    Filed: August 6, 2018
    Publication date: February 7, 2019
    Inventors: Qiang ZHANG, Shanlin YANG, Zhanglin PENG, Jun PEI, Xiaonong LU
  • Publication number: 20180356802
    Abstract: A method and a system for scheduling parallel machines based on hybrid shuffled frog leaping algorithm and variable neighborhood search algorithm are provided to solve collaborative production and processing of jobs on a plurality of unrelated batch processing machines. The jobs are distributed to machines based on the normal processing time and deterioration situation of the jobs on different machines and are arranged. An effective multi-machine heuristic rule is designed according to the structural properties of an optimal solution for the single-machine problem, and the improved rule is applied to the improved shuffled frog leaping algorithm to solve this problem. The improvement strategy for the traditional shuffled frog leaping algorithm is to improve the local search procedure of the traditional frog leaping algorithm by introducing the variable neighborhood search algorithm. The convergence rate and optimization capacity of the original algorithm are thus improved.
    Type: Application
    Filed: April 20, 2018
    Publication date: December 13, 2018
    Inventors: Xinbao Liu, Jun Pei, Min Kong, Shaojun Lu, Xiaofei Qian, Zhiping Zhou
  • Publication number: 20180356803
    Abstract: A method and system for batch scheduling uniform parallel machines with different capacities based on an improved genetic algorithm are provided. The method is to solve the batch scheduling problem of uniform parallel machines with different capacities. Jobs are distributed to machines by an improved genetic algorithm, and a corresponding batching strategy and a batch scheduling strategy are proposed according to the natural of the problem to obtain a fitness value of a corresponding individual; then, the quality of the solution is improved by a local search strategy; and, a crossover operation is performed on a population based on the fitness of the solution, and the population is continuously updated by repetitive iteration to eventually obtain an optimal solution.
    Type: Application
    Filed: June 12, 2018
    Publication date: December 13, 2018
    Inventors: Xinbao LIU, Jun PEI, Lu JIANG, Shaojun LU, Min KONG, Xiaofei QIAN, Zhiping ZHOU, Mei XUE
  • Publication number: 20180357584
    Abstract: The present invention discloses a method and system for collaborative scheduling of production and transportation in supply chains based on improved particle swarm optimization. The method includes the following steps: 1. setting algorithm parameters; 2. randomly generating an initial population; 3. correcting codes; 4. calculating fitness values and updating the speed and the position of particles; 5. performing tournament selection; 6. performing crossover mutation; 7. updating the population; and 8. determining whether a termination condition is satisfied; if so, outputting a globally optimal solution; if not, returning to the step 3. In the present invention, an approximately optimal solution can be obtained in view of the collaborative scheduling problem of production and transportation considering distributed storage, so that the cost is reduced for supply chains and the service level of supply chains is enhanced.
    Type: Application
    Filed: June 12, 2018
    Publication date: December 13, 2018
    Inventors: Xinbao LIU, Jun PEI, Mei XUE, Shaojun LU, Hao CHENG, Min KONG, Zhiping ZHOU, Lu JIANG
  • Publication number: 20180357610
    Abstract: A method and system for collaborative scheduling of production and transportation based on shuffled frog leaping and path relinking algorithms. The method includes the following steps: 1. setting algorithm parameters; 2. generating an initial population; 3. calculating fitness values; 4. grouping the population; 5. performing local search on all groups and updating individuals in groups; 6. performing global search on all groups and updating individuals in groups; 7. gathering all groups to obtain a new population; 8. performing a greedy path relinking algorithm on elegant solutions in the population to obtain an updated population; and, 9. determining termination conditions of algorithms; if so, ending; or otherwise, returning to the step 3.
    Type: Application
    Filed: June 12, 2018
    Publication date: December 13, 2018
    Inventors: Xinbao LIU, Jun PEI, Min KONG, Zhanhui WEI, Shaojun LU, Qingru SONG, Xiaofei QIAN
  • Publication number: 20180180722
    Abstract: A scanning lidar system includes a first lens having a first lens center and characterized by a first optical axis and a first surface of best focus, a second lens having a second lens center and characterized by a second optical axis, a platform separated from the first lens and the second lens along the first optical axis, and an array of laser sources mounted on the platform. Each laser source of the array of laser sources has an emission surface lying substantially at the first surface of best focus of the first lens and positioned at a respective laser position. The scanning lidar system further includes an array of photodetectors mounted on the platform. Each photodetector of the array of photodetectors is positioned at a respective photodetector position that is optically conjugate with a respective laser position of a corresponding laser source.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 28, 2018
    Applicant: Cepton Tecnhologies, Inc.
    Inventors: Jun PEI, Mark MCCORD, Daryoosh Rejaly
  • Publication number: 20180180720
    Abstract: A scanning lidar system includes a fixed frame, a first platform flexibly attached to the fixed frame, a lens assembly including a first lens and a second lens mounted on the first platform, a second platform flexible attached to the fixed frame, an electro-optic assembly including a first laser source and a first photodetector mounted on the second platform, a drive mechanism mechanically coupled to the first platform and the second platform and configured to translate the first platform and the second platform with respect to the fixed frame, and a controller coupled to the drive mechanism and configured to translate the first platform to a plurality of first positions through the drive mechanism and translate the second platform to a plurality of second positions through the drive mechanism such that a motion of the second platform is substantially opposite to a motion of the first platform.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 28, 2018
    Applicant: Cepton Tecnhologies, Inc.
    Inventors: Jun PEI, Mark MCCORD, Jun YE, Yupeng CUI, Liqun HAN
  • Publication number: 20180180721
    Abstract: A scanning lidar system includes an external frame, an internal frame attached to the external frame by vibration-isolation mounts, and an electro-optic assembly movably attached to the internal frame and configured to be translated with respect to the internal frame during scanning operation of the scanning lidar system.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 28, 2018
    Applicant: Cepton Tecnhologies, Inc.
    Inventors: Jun PEI, Mark MCCORD, Jun YE, Yupeng CUI, Liqun HAN
  • Patent number: 9846088
    Abstract: Disclosed is a method and apparatus for measuring semiconductor substrate temperature using a differential acoustic time of flight measurement technique. The measurement is based on measuring the time of flight of acoustic (ultrasonic) waves across the substrate, and calculating a substrate temperature from the measured time of flight and the known temperature dependence of the speed of sound for the substrate material. The differential acoustic time of flight method eliminates most sources of interference and error, for example due to varying coupling between an ultrasonic transducer and the substrate. To further increase the accuracy of the differential acoustic time of flight measurement, a correlation waveform processing algorithm is utilized to obtain a differential acoustic time of flight measurement from two measured ultrasonic waveforms. To facilitate signal recognition and processing, a symmetric Lamb mode may be used as mode of excitation of the substrate.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: December 19, 2017
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Jun Pei, Junwei Bao, Holger Tuitje, Ching-Ling Meng, Mihail D. Mihaylov
  • Publication number: 20170307758
    Abstract: A lidar system includes a laser source, a photodetector, an emission lens, a receiving lens, and a processor. The laser source is configured to be translated through a plurality of emission locations, and to emit a plurality of laser pulses therefrom. The emission lens is configured to collimate and direct the plurality of laser pulses towards an object. The receiving lens is configured to focus the portion of each of the plurality of laser pulses reflected off of the object to a plurality of detection locations. The photodetector is configured to be translated through the plurality of detection locations, and to detect the portion of each of the plurality of laser pulses. The processor is configured to determine a time of flight for each of the plurality of laser pulses from emission to detection, and construct a three-dimensional image of the object based on the determined time of flight.
    Type: Application
    Filed: September 16, 2016
    Publication date: October 26, 2017
    Applicant: Cepton Technologies, Inc.
    Inventors: Jun Pei, Mark McCord, Jun Ye
  • Publication number: 20170307759
    Abstract: A three-dimensional imaging system includes a lidar sensor having a first optical axis oriented at a first angle toward a scene and configured to determine a three-dimensional image of one or more first objects in the scene, and an optical three-dimensional sensor having a second optical axis oriented at a second angle toward the scene and configured to construct a three-dimensional image of one or more second objects in the scene. The first three-dimensional sensor is characterized by a first angular field of view. The second three-dimensional sensor is characterized by a second angular field of view different from the first angular field of view.
    Type: Application
    Filed: October 7, 2016
    Publication date: October 26, 2017
    Applicant: Cepton Technologies, Inc.
    Inventors: Jun Pei, Mark McCord, June Ye