Patents by Inventor Rui Tu

Rui Tu 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: 20210348093
    Abstract: A system for simultaneously preparing alcohol-free wine and high-alcohol liquor, comprising a primary membrane separation system and a secondary membrane separation system. An inlet of the primary membrane separation system is connected to raw materials, and a permeation side of the primary membrane separation system is connected to an inlet of the secondary membrane separation system; both the primary membrane separation system and the secondary membrane separation system comprise an organic matter preferentially-permeable pervaporation membrane. The method for simultaneously preparing the alcohol-free wine and the high-alcohol liquor comprise the following steps: feeding the wine produced by fermentation into the primary membrane separation system, ethanol and aromatic substances therein permeating the membrane in a vapor form to form a primary permeating fluid with alcohol content of 28-32°, and a primary residual permeating fluid being the alcohol-free wine with alcohol content of less than 0.5°.
    Type: Application
    Filed: April 17, 2019
    Publication date: November 11, 2021
    Applicant: JIANGSU JIUMO HIGH-TECH CO., LTD.
    Inventors: Xiaobin DING, Xiangqiang ZHAO, Xuefei SUN, Pingping DAI, Rui TU
  • Patent number: 10605605
    Abstract: The present invention discloses a GNSS-INS vehicle attitude determination method based on a single antenna, including the steps as below: mounting a GNSS antenna at a centroid and in the center of the vehicle, and mounting the IMU measuring unit of the MEMS sensor on the steering shaft of the vehicle; obtaining the position and velocity information of the vehicle by means of the GNSS antenna, obtaining the heading angular speed information of the vehicle by means of the IMU measuring unit; calculating the attitude angle of the vehicle by means of the combination with accelerometer and gyroscope; calculating the heading angle of the vehicle based on the position, velocity, and heading angular speed of the vehicle. The method combines the advantages of the short-term high precision of the IMU gyroscope and the long-term high stability of the GNSS single antenna, so as to avoid the divergence phenomenon.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: March 31, 2020
    Assignee: SHANGHAI HUACE NAVIGATION TECHNOLOGY LTD.
    Inventors: Xuefeng Shen, Xianghui Che, Qiang Ren, Guangjie Cao, Guangyang Dong, Rui Tu
  • Patent number: 10605619
    Abstract: A precision calibration method of attitude measuring systems is provided. The precision calibration method of attitude measuring systems includes the following steps: calibrating a zero-deviation, a scale coefficient, and a non-orthogonal angle between axes of an accelerometer to the attitude measuring system via an ellipsoid fitting model (S1); compensating original data of the accelerometer using a calculated ellipsoid parameter (S2); calibrating an electronic compass via the ellipsoid fitting model according to compensated accelerometer data (S3); compensating original electronic compass data by the calculated ellipsoid parameter (S4); calculating an attitude according to the compensated data of the accelerometer and compensated data of the electronic compass (S5). The above steps of the method have a reliable calibration result and a high precision with a less time consumption of calibration.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: March 31, 2020
    Assignee: SHANGHAI HUACE NAVIGATION TECHNOLOGY LTD
    Inventors: Rui Tu, Xuefeng Shen, Wenlong Zhao, Wending Dai, Qiang Yue
  • Publication number: 20180017390
    Abstract: The present invention discloses a GNSS-INS vehicle attitude determination method based on a single antenna, including the steps as below: mounting a GNSS antenna at a centroid and in the center of the vehicle, and mounting the IMU measuring unit of the MEMS sensor on the steering shaft of the vehicle; obtaining the position and velocity information of the vehicle by means of the GNSS antenna, obtaining the heading angular speed information of the vehicle by means of the IMU measuring unit; calculating the attitude angle of the vehicle by means of the combination with accelerometer and gyroscope; calculating the heading angle of the vehicle based on the position, velocity, and heading angular speed of the vehicle. The method combines the advantages of the short-term high precision of the IMU gyroscope and the long-term high stability of the GNSS single antenna, so as to avoid the divergence phenomenon.
    Type: Application
    Filed: July 4, 2016
    Publication date: January 18, 2018
    Applicant: SHANGHAI HUACE NAVIGATION TECHNOLOGY LTD
    Inventors: Xuefeng SHEN, Xianghui CHE, Qiang REN, Guangjie CAO, Guangyang DONG, Rui TU
  • Publication number: 20180010923
    Abstract: A precision calibration method of attitude measuring systems is provided. The precision calibration method of attitude measuring systems includes the following steps: calibrating a zero-deviation, a scale coefficient, and a non-orthogonal angle between axes of an accelerometer to the attitude measuring system via an ellipsoid fitting model (S1); compensating original data of the accelerometer using a calculated ellipsoid parameter (S2); calibrating an electronic compass via the ellipsoid fitting model according to compensated accelerometer data (S3); compensating original electronic compass data by the calculated ellipsoid parameter (S4); calculating an attitude according to the compensated data of the accelerometer and compensated data of the electronic compass (S5). The above steps of the method have a reliable calibration result and a high precision with a less time consumption of calibration.
    Type: Application
    Filed: July 4, 2016
    Publication date: January 11, 2018
    Applicant: SHANGHAI HUACE NAVIGATION TECHNOLOGY LTD
    Inventors: Rui TU, Xuefeng SHEN, Wenlong ZHAO, Wending DAI, Qiang YUE
  • Publication number: 20170350721
    Abstract: A method of updating an all-attitude angle of an agricultural machine based on a nine-axis MEMS sensor includes the following steps: establishing an error model of a gyroscope, an electronic compass calibration ellipse model and a seven-dimensional EKF filtering model, and setting a parameter vector corresponding to a vehicle motional attitude (S1); acquiring data including an acceleration and an angular velocity of a motion of vehicle, and an geomagnetic field intensity in real time (S2); calculating an angle, a velocity, position information, and a course angle of the vehicle by established error model of the gyroscope and the electronic compass calibration ellipse model(S3); data-fusion processing the angle, the velocity, the position information and the course angle of the vehicle by the seven-dimensional EKF filtering model, and updating a motional attitude angle of the vehicle in real time. The steps of the method have a small error, high precision, and reliability.
    Type: Application
    Filed: July 4, 2016
    Publication date: December 7, 2017
    Applicant: SHANGHAI HUACE NAVIGATION TECHNOLOGY LTD
    Inventors: Qiang REN, Jiejun WANG, Wending DAI, Guangjie CAO, Guangyang DONG, Rui TU
  • Patent number: 9660633
    Abstract: A circuit and method for power gating is provided. The circuit includes a switch circuit and a modulation oscillator. The switch circuit is connected between a circuit module and a power network having a target level. The switch circuit receives a control signal at its control signal input terminal to gate a connection between the circuit module and the power network under the control of the control signal. The switch circuit is connected to the circuit module at a first node. A modulation oscillator enabling signal input terminal is connected to a gating signal for enabling the modulation oscillator, a modulation oscillator control signal input terminal is connected to the first node, and an modulation oscillator output terminal is connected to the control signal input terminal of the switch circuit. The oscillation signal outputted from the modulation oscillator is modulated by the level of the first node.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: May 23, 2017
    Assignee: International Business Machines Corporation
    Inventors: Hai Cao, Si Shi, Rui Tu, Bo Qu
  • Publication number: 20160036429
    Abstract: A circuit and method for power gating is provided. The circuit includes a switch circuit and a modulation oscillator. The switch circuit is connected between a circuit module and a power network having a target level. The switch circuit receives a control signal at its control signal input terminal to gate a connection between the circuit module and the power network under the control of the control signal. The switch circuit is connected to the circuit module at a first node. A modulation oscillator enabling signal input terminal is connected to a gating signal for enabling the modulation oscillator, a modulation oscillator control signal input terminal is connected to the first node, and an modulation oscillator output terminal is connected to the control signal input terminal of the switch circuit. The oscillation signal outputted from the modulation oscillator is modulated by the level of the first node.
    Type: Application
    Filed: July 8, 2015
    Publication date: February 4, 2016
    Inventors: Hai Cao, Si Shi, Rui Tu, Bo Qu
  • Patent number: 8797789
    Abstract: Embodiments of the invention provide a sense amplifier, a SRAM chip comprising the sense amplifier and a method for conducting read operation on a SRAM cell. The sense amplifier according to an embodiment of the invention comprises a cross coupling circuit, a tail current transistor and an output stage, wherein source of the tail current transistor is connected to a negative level. With the scheme according to embodiments of the invention, speed of the sense amplifier can be enhanced, thereby increasing read speed of the SRAM chip.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: August 5, 2014
    Assignee: International Business Machines Corporation
    Inventors: Cui Li Chen, Xiao Li Hu, Qing Q L Li, Rui Tu
  • Publication number: 20130028007
    Abstract: Embodiments of the invention provide a sense amplifier, a SRAM chip comprising the sense amplifier and a method for conducting read operation on a SRAM cell. The sense amplifier according to an embodiment of the invention comprises a cross coupling circuit, a tail current transistor and an output stage, wherein source of the tail current transistor is connected to a negative level. With the scheme according to embodiments of the invention, speed of the sense amplifier can be enhanced, thereby increasing read speed of the SRAM chip.
    Type: Application
    Filed: July 18, 2012
    Publication date: January 31, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Cui Li Chen, Xiao Li Hu, Qing QL LI, Rui Tu