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公开(公告)号：US20220280964A1
公开(公告)日：2022-09-08
申请号：US17604445
申请日：2021-04-13
Applicant: Jiangsu University
Inventor： Jinyang LI , Yunfei CHEN
Abstract: The present invention provides a low-cost intelligent integrated spraying pressure and flow detection device and method. The low-cost intelligent integrated spraying pressure and flow detection device includes an intelligent integrated pressure and flow detection device, a control unit and a calibration system. The intelligent integrated pressure and flow detection device is a device which integrates a pressure detection unit and a flow detection unit and is configured to detect pressure and flow. The control unit is connected to the intelligent integrated pressure and flow detection device and the calibration system. The calibration system is configured to simulate a working condition of the intelligent integrated pressure and flow detection device during field work.
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公开(公告)号：US20210354159A1
公开(公告)日：2021-11-18
申请号：US16475521
申请日：2018-07-13
Applicant: Jiangsu University
Inventor： Jinyang LI , Jing XU , Xinhua WEI , Hongwei SUN
Abstract: A kind of real-time measurement system and method for height from spray boom to crop canopy was provided in present invention patent, which includes the following steps. Step 1: Calibration for ultrasonic ranging sensor; Step 2: Determination of included angle for two ultrasonic ranging sensors; Step 3: Collection of relative height between spray boom and crop canopy; Step 4: Anti-interference processing for height data; Step 5: Calculation of relative height from spray boom to crop canopy. Its characteristic lies in: two ultrasonic ranging sensors with a certain angle are installed at each end of the spray boom, the height of crop canopy was acquired under the control of control unit, and the relative height from spray boom to crop canopy was obtained by the anti-interference analysis and data conversion, the accurate monitoring for relative height from spray boom to crop canopy was realized while the spray boom is tilted. It breaks through the technical bottleneck that the relative height of the spray boom and the crop canopy cannot be accurately obtained when the spray boom tilts due to turbulence in the field operation of the spray boom sprayer, and lays a technical foundation for the dynamic adjustment of the balance and height of the spray boom.
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3.发明公开公开(公告)号：US20230158531A1
公开(公告)日：2023-05-25
申请号：US17630511
申请日：2021-04-13
Applicant: Jiangsu University
Inventor： Jinyang LI , Yunfei CHEN
CPC classification number: B05B12/124 , G01S15/08 , B05B15/68 , A01M7/0057 , A01M7/0089
Abstract: The present invention provides a system and method for real-time monitoring of an above-ground height of a boom based on multi-source information fusion. The system includes a boom, an information acquisition unit, and a control unit. The method includes: step 1: establishing a relationship between an above-ground height s of the boom and an output current y of a pull-wire cylinder displacement sensor; step 2: calibrating ultrasonic ranging sensors; step 3: acquiring above-ground heights of the boom; step 4: performing anti-interference processing on the acquired height data; step 5: calculating an above-ground height H0 of the boom by multi-source data fusion; step 6: calculating a distance Hcanno between the boom and a crop canopy; step 7: acquiring an inclination angle θb of the boom; and step 8: calculating heights Hend of two ends of the boom relative to ground.
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