Patents by Inventor Weixing CAO
Weixing CAO 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: 20240135570Abstract: A method for improving estimation of leaf area index in an early growth stage of wheat based on red-edge bands of Sentinel-2 satellite images includes the following steps: acquiring field background spectrum and wheat canopy spectrum information by means of Sentinel-2; respectively acquiring a “straw-soil” spectrum and a “wheat-straw-soil” spectrum, and calculating slopes of red-edge areas of the “straw-soil” spectrum and the “wheat-straw-soil” spectrum; calculating a tangent function SATF corrected by a background adjustment coefficient ?; constructing a wheat LAI estimation model based on a spectral variable SATFNIR-RE2; performing preliminary screening on the LAI estimation model using cross validation; and then testing the screened model with independent data.Type: ApplicationFiled: February 6, 2022Publication date: April 25, 2024Applicant: NANJING AGRICULTURAL UNIVERSITYInventors: Xia YAO, Wei LI, Tao CHENG, Yan ZHU, Yongchao TIAN, Weixing CAO, Dong LI, Hengbiao ZHENG, Yu ZHANG, Jifeng MA, Xue WANG, Caili GUO
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Patent number: 11933850Abstract: A device for detecting a slot wedge, an air gap and a broken rotor bar is provided, where a sequential circuit generates double concurrent pulses; the sequential circuit is connected to driving power modules; the driving power modules are connected to front-end interface circuits; the front-end interface circuits convert the double concurrent pulses into corresponding magnetic-field pulses; the magnetic-field pulses are transmitted to power supply terminals on adjacent phases of stator windings through impedance matching pins and coupled at a corresponding coil, air gap and squirrel cage rotor to generate single groups of cyclic rotating magnetic potentials; single rotating magnetic potentials are sequentially generated in adjacent slots on each of the phases of the stator windings; rotating electric potentials in magnetic circuits with two symmetrical phases are magnetically coupled to form distributed coupling magnetic field reflected full-cycle waves for reflecting a difference of a corresponding slot wedgType: GrantFiled: August 2, 2021Date of Patent: March 19, 2024Assignee: HANGZHOU HENUOVA TECHNOLOGY CO., LTD.Inventors: Yuewu Zhang, Weixing Yang, Boyan Zhao, Jie Luo, Gang Du, Chao Wang, Han Gao, Liwei Qiu, Ming Xu, Jiamin Li, Yanxing Bao, Qianyi Zhang, Zuting Cao, Junliang Liu
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Patent number: 11711992Abstract: A self-propelled platform for monitoring field crop phenotype is provided. The monitoring platform includes a traveling and steering mechanism, wheel track and ground clearance adjustment devices, damping devices, and a case. The traveling and steering mechanism includes wheel side motors, wheels, and torque motors. The wheels are connected to respective upright posts of the platform through respective rigid independent suspensions. Each upright post is of sleeve structure and includes an upper sleeve and a lower sleeve. A corresponding damping device is connected between the upper sleeve and the lower sleeve. The wheel track and ground clearance adjustment devices are configured for adjusting the height of the case and the tracks between the wheels. The lower ends of the wheel track and ground clearance adjustment devices are rotatably connected to respective upright posts, and the upper ends are rotatably connected to the case.Type: GrantFiled: February 10, 2022Date of Patent: August 1, 2023Assignees: Nanjing Agricultural University, Shennong Smart Agriculture Research Institute Nanjing Co., Ltd.Inventors: Jun Ni, Huali Yuan, Weixing Cao, Yan Zhu, Xiaoping Jiang, Lili Yao, Fangrong Pang, Donghang Li
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Patent number: 11709092Abstract: The disclosure discloses an apparatus for online volumetrically detecting grain yield based on weight calibration comprising left volumetric granary, right volumetric granary and push board. The left volumetric granary is provided on its bottom with first weighing sensor, and in its side with unload grain port opening and first closing door, the right volumetric granary is provided on its bottom with second weighing sensor, and in its side with unload grain port opening and second closing door, the left volumetric granary and the right volumetric granary are provided on their tops with the push board, the push board is a hollow box structure with a top side and a bottom side both opened, and is slidably mounted to a top of the left volumetric granary and the right volumetric granary through a slide driving mechanism.Type: GrantFiled: August 20, 2020Date of Patent: July 25, 2023Assignee: NANJING AGRICULTURAL UNIVERSITYInventors: Jun Ni, Jinbo Yang, Yan Zhu, Weixing Cao, Xiaoping Jiang, Yongchao Tian
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Publication number: 20220256761Abstract: A self-propelled platform for monitoring field crop phenotype is provided. The monitoring platform includes a traveling and steering mechanism, wheel track and ground clearance adjustment devices, damping devices, and a case. The traveling and steering mechanism includes wheel side motors, wheels, and torque motors. The wheels are connected to respective upright posts of the platform through respective rigid independent suspensions. Each upright post is of sleeve structure and includes an upper sleeve and a lower sleeve. A corresponding damping device is connected between the upper sleeve and the lower sleeve. The wheel track and ground clearance adjustment devices are configured for adjusting the height of the case and the tracks between the wheels. The lower ends of the wheel track and ground clearance adjustment devices are rotatably connected to respective upright posts, and the upper ends are rotatably connected to the case.Type: ApplicationFiled: February 10, 2022Publication date: August 18, 2022Inventors: Jun NI, Huali YUAN, Weixing CAO, Yan ZHU, Xiaoping JIANG, Lili YAO, Fangrong PANG, Donghang LI
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Patent number: 11029251Abstract: A method for estimating the aboveground biomass of rice based on multi-spectral images of an unmanned aerial vehicle (UAV), including: normatively collecting UAV multi-spectral image data of rice canopy and ground measured biomass data; after collection, preprocessing images, extracting reflectivity and texture feature parameters, calculating a vegetation index, and constructing a new texture index; and by stepwise multiple regression analysis, integrating the vegetation index and the texture index to estimate rice biomass, and establishing a multivariate linear model for estimating biomass. A new estimation model is verified for accuracy by a cross-validation method. The method has high estimation accuracy and less requirements on input data, and is suitable for the whole growth period of rice. Estimating rice biomass by integrating UAV spectrum and texture information is proposed for the first time, and can be widely used for monitoring crop growth by UAV remote sensing.Type: GrantFiled: November 6, 2019Date of Patent: June 8, 2021Assignee: NANJING AGRICULTURAL UNIVERSITYInventors: Yan Zhu, Hengbiao Zheng, Tao Cheng, Xia Yao, Yongchao Tian, Weixing Cao
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Publication number: 20210063235Abstract: The disclosure discloses an apparatus for online volumetrically detecting grain yield based on weight calibration comprising left volumetric granary, right volumetric granary and push board. The left volumetric granary is provided on its bottom with first weighing sensor, and in its side with unload grain port opening and first closing door, the right volumetric granary is provided on its bottom with second weighing sensor, and in its side with unload grain port opening and second closing door, the left volumetric granary and the right volumetric granary are provided on their tops with the push board, the push board is a hollow box structure with a top side and a bottom side both opened, and is slidably mounted to a top of the left volumetric granary and the right volumetric granary through a slide driving mechanism.Type: ApplicationFiled: August 20, 2020Publication date: March 4, 2021Inventors: Jun NI, Jinbo YANG, Yan ZHU, Weixing CAO, Xiaoping JIANG, Yongchao TIAN
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Patent number: 10845301Abstract: A crop growth monitoring device based on multi-rotor unmanned aerial vehicle platform includes a multi-rotor unmanned aerial vehicle, a payload and a ground receiver; the payload part includes a multispectral crop growth sensor module, a signal amplification module, a controller module, a wireless data transmission module, and a power module for power supply and a power supply control module, which are connected in sequence; further comprising a gimbal. The crop growth monitoring device based on the multi-rotor unmanned aerial vehicle platform overcomes the influence on measurement caused by the down-wash flow field of the unmanned aerial vehicle, and can transmit the measured data to the ground receiver in real time for online analysis and processing, realizing continuous, real-time, convenient and large-scope acquisition of crop growth information.Type: GrantFiled: December 27, 2016Date of Patent: November 24, 2020Assignee: NANJING AGRICULTURAL UNIVERSITYInventors: Jun Ni, Lili Yao, Yan Zhu, Weixing Cao, Xia Yao, Yongchao Tian, Fang Liu, Fangrong Pang
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Publication number: 20200141877Abstract: A method for estimating the aboveground biomass of rice based on multi-spectral images of an unmanned aerial vehicle (UAV), including: normatively collecting UAV multi-spectral image data of rice canopy and ground measured biomass data; after collection, preprocessing images, extracting reflectivity and texture feature parameters, calculating a vegetation index, and constructing a new texture index; and by stepwise multiple regression analysis, integrating the vegetation index and the texture index to estimate rice biomass, and establishing a multivariate linear model for estimating biomass. A new estimation model is verified for accuracy by a cross-validation method. The method has high estimation accuracy and less requirements on input data, and is suitable for the whole growth period of rice. Estimating rice biomass by integrating UAV spectrum and texture information is proposed for the first time, and can be widely used for monitoring crop growth by UAV remote sensing.Type: ApplicationFiled: November 6, 2019Publication date: May 7, 2020Applicant: NANJING AGRICULTURAL UNIVERSITYInventors: Yan ZHU, Hengbiao ZHENG, Tao CHENG, Xia YAO, Yongchao TIAN, Weixing CAO
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Patent number: 10539437Abstract: A crop growth sensing apparatus and method supporting agricultural machinery variable-quantity fertilization, includes a shock-absorbing support, a shock-absorbing frame, and a cantilever beam. The shock-absorbing support is connected to an agricultural machinery vehicle frame. The cantilever beam is pivotally connected above a shock-absorbing spring of the shock-absorbing support. The cantilever beam, by means shock-absorbing springs mounted thereabove and thereunder, is pivotally connected to the shock-absorbing frame. The shock-absorbing frame is fixedly connected to a crop growth sensor. The crop growth sensing method employs an engine vibration model of the agricultural machinery and a vibration model for vehicle wheels and farmland road surface as excitations in analyzing vibrations of a crop growth multispectral sensor shock-absorbing apparatus to determine the number and mount positions of sensitive elements of the crop growth multispectral sensor.Type: GrantFiled: December 28, 2016Date of Patent: January 21, 2020Assignee: NANJING AGRICULTURAL UNIVERSITYInventors: Jun Ni, Weixing Cao, Yan Zhu, Shanshan Yu, Yongchao Tian, Xia Yao, Fangrong Pang, Lili Yao, Fang Liu
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Publication number: 20190017853Abstract: A crop growth sensing apparatus and method supporting agricultural machinery variable-quantity fertilization, includes a shock-absorbing support, a shock-absorbing frame, and a cantilever beam. The shock-absorbing support is connected to an agricultural machinery vehicle frame. The cantilever beam is pivotally connected above a shock-absorbing spring of the shock-absorbing support. The cantilever beam, by means shock-absorbing springs mounted thereabove and thereunder, is pivotally connected to the shock-absorbing frame. The shock-absorbing frame is fixedly connected to a crop growth sensor. The crop growth sensing method employs an engine vibration model of the agricultural machinery and a vibration model for vehicle wheels and farmland road surface as excitations in analyzing vibrations of a crop growth multispectral sensor shock-absorbing apparatus to determine the number and mount positions of sensitive elements of the crop growth multispectral sensor.Type: ApplicationFiled: December 28, 2016Publication date: January 17, 2019Applicant: NANJING AGRICULTURAL UNIVERSITYInventors: Jun NI, Weixing CAO, Yan ZHU, Shanshan YU, Yongchao TIAN, Xia YAO, Fangrong PANG, Lili YAO, Fang LIU
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Publication number: 20190011355Abstract: A crop growth monitoring device based on a multi-rotor unmanned aerial vehicle platform includes a multi-rotor unmanned aerial vehicle, a payload and a ground receiver; the payload part includes a multispectral crop growth sensor module, a signal amplification module, a controller module, a wireless data transmission module, and a power module for power supply and a power supply control module, which are connected in sequence; further comprising a gimbal. The crop growth monitoring device based on the multi-rotor unmanned aerial vehicle platform overcomes the influence on measurement caused by the down-wash flow field of the unmanned aerial vehicle, and can transmit the measured data to the ground receiver in real time for online analysis and processing, realizing continuous, real-time, convenient and large-scope acquisition of crop growth information.Type: ApplicationFiled: December 27, 2016Publication date: January 10, 2019Applicant: NANJING AGRICULTURAL UNIVERSITYInventors: Jun NI, Lili YAO, Yan ZHU, Weixing CAO, Xia YAO, Yongchao TIAN, Fang LIU, Fangrong PANG