Patents by Inventor Zhihui Duan

Zhihui Duan 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).

  • Patent number: 11850944
    Abstract: A hybrid power system comprises an engine, a hybrid power module, and a dual input shaft speed change mechanism. The hybrid power module comprises a motor, a planetary gear system, and a first clutch. The planetary gear system is provided with at least three rotating shafts, which respectively are: a rotating shaft X1, a rotating shaft X2, and a rotating shaft X3. The first clutch is arranged between any two of the three rotating shafts. A power output shaft of the engine is connected to the rotating shaft X3 or the rotating shaft X1 and to a second input shaft of the dual input shaft speed change mechanism. A rotor of the motor is connected to the rotating shaft X1 or to the rotating shaft X3. The rotating shaft X2 is connected to a first input shaft of the dual input shaft speed change mechanism.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: December 26, 2023
    Assignees: Beijing National New Energy Vehicle Technology Innovation Center Co., Ltd.
    Inventor: Zhihui Duan
  • Patent number: 11760337
    Abstract: Provided is a power drive system for a hybrid power vehicle, including an engine, a hybrid power module, and a dual input shaft speed change mechanism, wherein the hybrid power module consists of a motor, a composite planetary gear mechanism, a clutch, and a brake; the composite planetary gear mechanism is provided with at least four rotating shafts which are respectively connected to a rotor of the motor, a power output shaft of the engine, and a first input shaft and a second input shaft of the dual input shaft speed change mechanism; the brake is disposed on the power output shaft of the engine; and the clutch is disposed between any two of the four rotating shafts of the composite planetary gear mechanism.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: September 19, 2023
    Assignees: Beijing National New Energy Vehicle Technology Innovation Center Co., Ltd.
    Inventor: Zhihui Duan
  • Publication number: 20230194675
    Abstract: A scanning assembly configured to reciprocally scan a predetermined scanning range in a first direction with a laser beam by projecting the laser beam reflected by a reflective member periodically driven by an actuator to rotate reciprocally, a retrospective optics configured to guide a light incident on the reflective member to the light detector, and a reflective area configured to specularly reflect the laser beam are provided. Driving frequency of the actuator is adjusted such that a time interval between a first reference timing determined based on detection timing of a light reflected from the reflective area and a second reference timing determined based on a timing when the scan reaches a predetermined end of the scanning range substantially become equal in a forward scan path and a backward scan path of the reciprocating scan passing through the reflective area.
    Type: Application
    Filed: December 15, 2022
    Publication date: June 22, 2023
    Inventor: Zhihui DUAN
  • Publication number: 20220340121
    Abstract: Provided is a power drive system for a hybrid power vehicle, including an engine, a hybrid power module, and a dual input shaft speed change mechanism, wherein the hybrid power module consists of a motor, a composite planetary gear mechanism, a clutch, and a brake; the composite planetary gear mechanism is provided with at least four rotating shafts which are respectively connected to a rotor of the motor, a power output shaft of the engine, and a first input shaft and a second input shaft of the dual input shaft speed change mechanism; the brake is disposed on the power output shaft of the engine; and the clutch is disposed between any two of the four rotating shafts of the composite planetary gear mechanism.
    Type: Application
    Filed: September 16, 2020
    Publication date: October 27, 2022
    Inventor: Zhihui Duan
  • Publication number: 20220332183
    Abstract: A hybrid power system comprises an engine, a hybrid power module, and a dual input shaft speed change mechanism. The hybrid power module comprises a motor, a planetary gear system, and a first clutch. The planetary gear system is provided with at least three rotating shafts, which respectively are: a rotating shaft X1, a rotating shaft X2, and a rotating shaft X3. The first clutch is arranged between any two of the three rotating shafts. A power output shaft of the engine is connected to the rotating shaft X3 or the rotating shaft X1 and to a second input shaft of the dual input shaft speed change mechanism. A rotor of the motor is connected to the rotating shaft X1 or to the rotating shaft X3. The rotating shaft X2 is connected to a first input shaft of the dual input shaft speed change mechanism.
    Type: Application
    Filed: September 10, 2020
    Publication date: October 20, 2022
    Inventor: Zhihui Duan
  • Patent number: 11275157
    Abstract: An object detecting apparatus is provided with: a collimating assembly that converts laser light emitted by plural light-emitting points to a laser beam having a divergence angle in an arrangement direction of plural light-emitting points; and an optical assembly that projects the laser beam outward along an optical axis and guides an incident light toward a light-receiving element along the optical axis. The optical assembly is provided with a collective optics that forms an image of the incident light on a focal plane and an aperture located on the focal plane. The aperture satisfies ???, where ? is the divergence angle along the arrangement direction of plural light-emitting points, D is a size of a light passing region of the aperture in a direction corresponding to the divergence angle, d is an effective focal distance of the collective optics, and ?=arctan(D/d).
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: March 15, 2022
    Assignee: DOLPHIN CO., LTD.
    Inventor: Zhihui Duan
  • Publication number: 20210011281
    Abstract: The light scanning apparatus forms a plurality of primary scanning lines at different positions in a secondary scanning direction by a light beam, adjusts scanning range of the primary scanning lines so that first primary scanning lines scan a larger range in a primary scanning direction than the remaining primary scanning lines, by making the beam forming the first primary scanning lines pass through an optical member with refractive power. The optical member preferably includes a first optical element to refract a beam passing through a first primary scanning range more strongly to a direction of a first end of the primary scanning lines at closer positions to the first end, and a second optical element to refract a beam passing through a second primary scanning range more strongly to a direction of a second end of the primary scanning lines at closer positions to the second end.
    Type: Application
    Filed: December 23, 2019
    Publication date: January 14, 2021
    Inventor: Zhihui DUAN
  • Patent number: 10878984
    Abstract: An actuator includes a column shaped magnet having an S-pole and an N-pole thereof positioned opposite to each other across a central axis of the magnet. A driving coil is disposed near the magnet, the driving coil comprising a first portion and a second portion positioned opposite to each other across the magnet, the first portion and the second portion are generally parallel to the central axis, current flowing in opposite directions in the first portion and the second portion when powered on. A ferromagnetic material is disposed outside the driving coil along the central axis, distance from the central axis to the ferromagnetic material varying with the direction from the central axis. A driving circuitry is configured to apply a drive signal, the drive signal having a periodically varying voltage or current. The magnet performs reciprocating rotation in accordance with the drive signal applied by the driving circuitry.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: December 29, 2020
    Assignee: DOLPHIN CO., LTD.
    Inventor: Zhihui Duan
  • Publication number: 20200379109
    Abstract: An actuator comprises: a torsion spring fixed to a top yoke as a support member; a permanent magnet coupled to the torsion spring where the permanent magnet is placed with an N-pole and an S-pole thereof across a rotational axis of the torsion spring; a drive circuitry configured to apply a drive signal with periodically varying voltage or current; and a mirror unit comprising a first mirror and second minors, the first mirror being near a center of the torsion spring, and the second mirrors being around the first minor and parallel to the first mirror. A plane including a reflecting surface of the second minors is closer to the rotation axis of the torsion spring than a plane including a reflecting surface of the first mirror, and the minor unit reciprocates in accordance with application of the drive signal.
    Type: Application
    Filed: December 23, 2019
    Publication date: December 3, 2020
    Inventor: Zhihui DUAN
  • Publication number: 20200381156
    Abstract: An actuator includes a column shaped magnet having an S-pole and an N-pole thereof positioned opposite to each other across a central axis of the magnet. A driving coil is disposed near the magnet, the driving coil comprising a first portion and a second portion positioned opposite to each other across the magnet, the first portion and the second portion are generally parallel to the central axis, current flowing in opposite directions in the first portion and the second potion when powered on. A ferromagnetic material is disposed outside the driving coil along the central axis, distance from the central axis to the ferromagnetic material varying with the direction from the central axis. A driving circuitry is configured to apply a drive signal, the drive signal having a periodically varying voltage or current. The magnet performs reciprocating rotation in accordance with the drive signal applied by the driving circuitry.
    Type: Application
    Filed: December 23, 2019
    Publication date: December 3, 2020
    Inventor: Zhihui DUAN
  • Patent number: 10852431
    Abstract: An actuator comprises: a torsion spring fixed to a top yoke as a support member; a permanent magnet coupled to the torsion spring where the permanent magnet is placed with an N-pole and an S-pole thereof across a rotational axis of the torsion spring; a drive circuitry configured to apply a drive signal with periodically varying voltage or current; and a mirror unit comprising a first mirror and second mirrors, the first mirror being near a center of the torsion spring, and the second mirrors being around the first mirror and parallel to the first mirror. A plane including a reflecting surface of the second mirrors is closer to the rotation axis of the torsion spring than a plane including a reflecting surface of the first mirror, and the mirror unit reciprocates in accordance with application of the drive signal.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: December 1, 2020
    Assignee: DOLPHIN CO., LTD.
    Inventor: Zhihui Duan
  • Publication number: 20200200902
    Abstract: An object detecting apparatus is provided with: a collimating assembly that converts laser light emitted by plural light-emitting points to a laser beam having a divergence angle in an arrangement direction of plural light-emitting points; and an optical assembly that projects the laser beam outward along an optical axis and guides an incident light toward a light-receiving element along the optical axis. The optical assembly is provided with a collective optics that forms an image of the incident light on a focal plane and an aperture located on the focal plane. The aperture satisfies ???, where ? is the divergence angle along the arrangement direction of plural light-emitting points, D is a size of a light passing region of the aperture in a direction corresponding to the divergence angle, d is an effective focal distance of the collective optics, and ?=arctan(D/d).
    Type: Application
    Filed: March 3, 2020
    Publication date: June 25, 2020
    Inventor: Zhihui DUAN
  • Patent number: 10620314
    Abstract: An object detecting apparatus is provided with: a laser diode that projects a laser beam; a torsion spring coupled with a support member; a mirror coupled to a first side of the torsion spring and reflecting the laser beam; a permanent magnet coupled to a second side of the torsion spring across a rotational axis of the torsion spring; a driving coil; and a magnetic substance assembly surrounding the driving coil. The mirror reciprocates corresponding to a driving signal applied to the driving coil. The object detecting apparatus is further provided with a speed detecting circuitry configured to detect a moving speed of the mirror; and a pulse controller configured to control a pulse interval of the laser beam projected by the laser diode based on the moving speed detected by the speed detecting circuitry.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: April 14, 2020
    Assignee: DOLPHIN CO., LTD.
    Inventor: Zhihui Duan
  • Patent number: 10569635
    Abstract: A hybrid electric drive train for a motor vehicle comprises an engine with a drive shaft, an electric motor operable of motoring and generating, a differential transmission, and a multi-stage transmission with two input shafts and at least one output shaft. The differential transmission includes a planetary gear set, a clutch and a brake. The planetary gearset has a first element connected to the motor and the second input shaft of the transmission, a second element connected to the engine shaft, and a third element connected to the first input shaft of the transmission. The clutch is located between any two elements of the planetary gear set, and the brake is connected to the engine shaft. The transmission has a plurality of gearsets, and the driving gears of odd-numbered gearsets are mounted on the first input shaft while the driving gears of even-numbered gearsets are mounted on the second input shaft. The engine shaft can achieve every gear ratio of the gearsets.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: February 25, 2020
    Inventor: Zhihui Duan
  • Publication number: 20200011974
    Abstract: An object detecting apparatus is provided with: a laser diode that projects a laser beam; a torsion spring coupled with a support member; a mirror coupled to a first side of the torsion spring and reflecting the laser beam; a permanent magnet coupled to a second side of the torsion spring across a rotational axis of the torsion spring; a driving coil; and a magnetic substance assembly surrounding the driving coil. The mirror reciprocates corresponding to a driving signal applied to the driving coil. The object detecting apparatus is further provided with a speed detecting circuitry configured to detect a moving speed of the mirror; and a pulse controller configured to control a pulse interval of the laser beam projected by the laser diode based on the moving speed detected by the speed detecting circuitry.
    Type: Application
    Filed: December 14, 2018
    Publication date: January 9, 2020
    Inventor: Zhihui DUAN
  • Publication number: 20190225069
    Abstract: A hybrid electric drive train for a motor vehicle comprises an engine with a drive shaft, an electric motor operable of motoring and generating, a differential transmission, and a multi-stage transmission with two input shafts and at least one output shaft. The differential transmission includes a planetary gear set, a clutch and a brake. The planetary gearset has a first element connected to the motor and the second input shaft of the transmission, a second element connected to the engine shaft, and a third element connected to the first input shaft of the transmission. The clutch is located between any two elements of the planetary gear set, and the brake is connected to the engine shaft. The transmission has a plurality of gearsets, and the driving gears of odd-numbered gearsets are mounted on the first input shaft while the driving gears of even-numbered gearsets are mounted on the second input shaft. The engine shaft can achieve every gear ratio of the gearsets.
    Type: Application
    Filed: January 25, 2018
    Publication date: July 25, 2019
    Inventor: Zhihui Duan
  • Patent number: 10324184
    Abstract: An object detecting apparatus is provided with: a lens assembly that converts laser light emitted by plural light-emitting points to a laser beam having a divergence angle in an arrangement direction of plural light-emitting points; and an optical assembly that projects the laser beam outward along an optical axis and guides an incident light toward a light-receiving element along the optical axis. The optical assembly is provided with a collective lens that forms an image of the incident light on a focal plane and an aperture located on the focal plane. The aperture satisfies ???, where ? is the divergence angle along the arrangement direction of plural light-emitting points, D is a size of a light passing region of the aperture in a direction corresponding to the divergence angle, d is a distance between the collective lens and the aperture, and ?=arctan(D/d).
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: June 18, 2019
    Assignee: DOLPHIN CO., LTD.
    Inventor: Zhihui Duan
  • Patent number: 9378402
    Abstract: A barcode reader, as an optical information reader which reads information indicated with a symbol having a light reflectance different from an ambient light reflectance, is provided with a linear sensor as a light receiving sensor, an image pickup lens to image-form light on the linear sensor, an LED as a light emitting device, a projection lens to project light emitted from the LED, a parting portion to regulate a light projection range of the light emitted from the LED, having a first opening and a second opening to shield light out of a predetermined range, a central position of the predetermined range being shifted from position of an optical axis of the projection lens to a side of an optical axis of the image pickup lens.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: June 28, 2016
    Assignee: Optoelectronics Co., Ltd.
    Inventors: Zhihui Duan, Wataru Kubo
  • Patent number: 9213876
    Abstract: In a barcode reader, a sensor controller sets time of one frame of a line image sensor based on output time necessary for data output of one frame from the line image sensor and lighting time of an LED. A light source controller performs first lighting control to turn on the LED only for the lighting time after termination of the data output within the time of one frame, and second lighting control to turn on the LED only for the lighting time so as to include the entire period of the data output within the time of one frame.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: December 15, 2015
    Assignee: Optoelectronics CO., Ltd.
    Inventors: Masaki Kurokawa, Depei Ji, Zhihui Duan
  • Patent number: 9158955
    Abstract: A code symbol reading apparatus, that reads a code symbol on an object to be read by scanning the object, repeats trial to read the code symbol until the apparatus succeeds in reading, while changing a transmission frequency of a filter that processes a signal representing a light intensity variation obtained through the scan and in which transmittance depends on a frequency of the signal.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: October 13, 2015
    Assignee: Optoelectronics Co., Ltd.
    Inventors: Kazuto Kimura, Zhihui Duan