A system and method for accurately measuring and calculating the slip rate of a wheeled tractor
A wheeled tractor and slip rate technology, applied in the field of wheeled tractor slip rate accurate measurement system, can solve problems such as strong interference, achieve strong fault tolerance, improve measurement accuracy and stability, and strong applicability and practicability Effect
Active Publication Date: 2022-05-17
CHINA AGRI UNIV
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Problems solved by technology
[0005] In view of the above-mentioned technical problems, the object of the present invention is to provide a system and method for accurately measuring and calculating the slip rate of a wheeled tractor, and to construct a multi-moving body with high precision and accuracy through satellite positioning, drones, and low-speed radar speedometers between the UAV and the unit. The calculation method solves the problem of strong interference in the complex field environment and the loss of single sensor signal, improves the accuracy and stability of real-time vehicle speed measurement, and then accurately calculates the slip rate of wheeled tractors
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[0080] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0081] Such as figure 1 As shown, a system for accurately measuring and calculating the slip rate of a wheeled tractor includes a satellite positioning system 3, an unmanned aerial vehicle 2, a wheel speed detection unit, a low-speed radar speedometer 5, a data collector and a computer.
[0082]Said satellite positioning system 3 provides the satellite estimated vehicle speed and time information of the tractor 1 to be tested to the computer in real time. Said satellite positioning system 3 can select Global Navigation Satellite System (GNSS), American Global Positioning System (GPS), Beidou Satellite Navigation System (BDS) according to actual conditions. The tractor 1 to be tested is a two-wheel drive or four-wheel drive tractor.
[0083] The unmanned aerial vehicle 2 is provided with a real-time dynamic positioning (RTK, Real-time kinematic) refere...
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The invention relates to a system and method for accurately measuring and calculating the slip rate of a wheeled tractor. The system includes a satellite positioning system, a drone, a wheel speed detection unit, a low-speed radar speedometer, a data collector and a computer; the satellite positioning system provides the computer with the satellite-calculated vehicle speed and time information of the tractor to be tested in real time; the drone has a real-time Dynamic positioning reference station; the tractor to be tested is equipped with a real-time dynamic positioning mobile station, which is used to obtain the vehicle speed of the tractor to be measured by the UAV; the computer collects the vehicle speed according to the satellite positioning system, UAV, low-speed radar speedometer and wheel speed detection unit The tractor speed data can be used to obtain accurate tractor speed, and then obtain the slip rate of each wheel of the tractor. The invention solves the problems of strong interference in the complex field environment and signal loss of a single sensor, improves the accuracy and stability of real-time vehicle speed measurement, and further accurately measures and calculates the slip rate of the wheeled tractor.
Description
technical field [0001] The invention belongs to the technical field of tractor slip rate measurement, and relates to a system and method for accurately measuring and calculating the slip rate of a wheeled tractor. Background technique [0002] Tractor wheel slip has a great impact on tractor performance, and the impact of slip rate on tractor performance is mainly manifested in traction force and traction efficiency. In order to achieve efficient traction of the tractor, the slip rate is an important parameter that the tractor control system needs to refer to in real time. The traditional tractor slip rate measurement uses the five-wheel speed measurement method, but the harsh working environment of the tractor affects its measurement accuracy. Therefore, how to accurately measure the tractor slip rate without affecting the operating conditions is a problem that domestic and foreign agricultural machinery testing experts are dedicated to studying. [0003] The wheel slip r...
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IPC IPC(8): G01P3/36G01S13/58G01S19/52
CPCG01P3/36G01S13/58G01S19/52
Inventor 宋正河李金凤武秀恒张学敏赵晋海
Owner CHINA AGRI UNIV