Multiple-path precision seed-metering device seed-metering performance detection system
A detection system and seed metering technology, which is applied to the testing of machines/structural components, instruments, and measuring devices, can solve the problems of high maintenance costs, large systems, and large floor space, and achieve real-time detection of seeding performance Effect
Active Publication Date: 2013-12-04
HUAZHONG AGRICULTURAL UNIVERSITY
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[0003] The visual detection method is fast, with flexible algorithms, comprehensive functions, and no strict requirements on the shape of seeds. However, at present, it can only detect the performance of single-channel seed metering devices, and the cost of a vision-based precision seed metering device performance detection system is ten More than tens of thousands of yuan, including the conveyor belt, hydraulic system, control system, visual inspection system and software system, the system is huge, covers a large area, and the maintenance cost is high
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[0039] Refer below Figure 1-3 , specifically explain the design and application of a multi-channel precision seed metering performance detection system of the present invention.
[0040] The optical fiber sensor 210 in the present invention (commercially purchased FS-V11 optical fiber sensor, purchased from Keyence Corporation of Japan) is installed and fixed on the seed metering device 100 (the seed metering device 100 adopts the patent "a positive sensor" authorized by Huazhong Agricultural University. Negative air pressure combined rapeseed precision metering device", patent number: ZL200620172781.3; patent publication number: CN201001269) at the seeding port, used to detect the time interval of seeding, the photoelectric sensor is installed and fixed on the drive shaft end of the seeding device , used to detect the rotation speed of the seed meter, and the pulse sequence signal obtained by induction is conditioned and connected to the interrupt interface of the single-chi...
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The invention belongs to the technical field of agricultural equipment testing, in particular to a multiple-path precision seed-metering device seed-metering performance detection system. Optical fiber sensors and photoelectric sensors in the system condition signals about seeds at seed-metering openings of a precision seed-metering device as well as seed metering and rotation speed pulse sequences which are obtained through the sensing of a transmission shaft of the seed-metering device; and the conditioned signals are accessed to an interrupt interface of a single chip microcomputer system; seed time intervals and seed-metering disc rotation speed are recorded in a real-time manner through a time capture interrupt program and a frequency metering program; under the control of software commands, the single chip microcomputer system transmits a plurality of paths of time interval data and seed-metering disc rotation speed information to a computer system through a serial port handshake transmission protocol; the computer system performs calculation according to preset seed-metering performance indexes of the precision seed-metering device so as to obtain seed-metering performance indexes of each path such as a qualified index, a re-seeding index and a missed seeding index; and detection results are displayed by histograms and fonts with different colors. The multiple-path precision seed-metering device seed-metering performance detection system has the advantages of compact structure, strong real-time performance and high precision, and can assisting in realizing synchronous detection of six path s of seed-metering devices.
Description
technical field [0001] The invention belongs to the technical field of agricultural equipment detection, and in particular relates to a seeding performance detection system of a multi-channel precision seed metering device. Background technique [0002] After years of development, the level of agricultural mechanization in my country has been significantly improved, and the intelligentization of agricultural machinery is gradually becoming the trend of agricultural development today. At present, the detection method based on computer vision is mainly used for the performance detection of precision seed metering devices, especially small particle size precision seed metering devices. Through the image processing algorithm, the performance indicators of the precision seed metering device are statistically calculated, including the qualified index, missed seeding index and reseeding index. [0003] The visual detection method is fast, with flexible algorithms, comprehensive fu...
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Inventor 丁幼春廖庆喜黄海东赵鹏辉
Owner HUAZHONG AGRICULTURAL UNIVERSITY