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Seeding quantity online measurement method and device of precision planter

A measurement method and seeder technology, applied to mass flow measurement devices, devices for measuring the time required to move a certain distance, and sowing, can solve problems such as high cost and easy to be bumped by field roads

Active Publication Date: 2012-06-20
CHINESE ACAD OF AGRI MECHANIZATION SCI
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Problems solved by technology

This method has the disadvantages of high cost, susceptible to field road bumps, etc.

Method used

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  • Seeding quantity online measurement method and device of precision planter
  • Seeding quantity online measurement method and device of precision planter
  • Seeding quantity online measurement method and device of precision planter

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Embodiment Construction

[0090] The technical solutions of the present invention will be further described in more detail in conjunction with the accompanying drawings and specific embodiments.

[0091] Such as figure 1 As shown, it is a structural diagram of an on-line measurement device for seeding rate of a precision seeder according to the present invention. The online measurement device 100 includes: an upstream capacitance sensor 11 , a downstream capacitance sensor 12 , a capacitance-frequency conversion circuit 21 , a capacitance-frequency conversion circuit 22 , a host computer 30 and a travel speed sensor 40 .

[0092] The upstream capacitive sensor 11 and the downstream capacitive sensor 12 are respectively installed on the outer wall of the seed introduction tube 50, constantly converting the motion information of the wheat grains into corresponding capacitive signals, and passing through the respective capacitive-frequency conversion circuits 21 and capacitive-frequency conversion circuit...

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Abstract

The invention discloses a seeding quantity online measurement method and device of a precision planter. The method comprises the steps of: firstly, transmitting the movement information of kernels to capacitance signals by an upstream or a downstream capacitance sensor; secondly, carrying out frequency transmission on the capacitance signals, and carrying out mutual correlation treatment on the capacitance signals subjected to frequency transmission to obtain transition time; thirdly, obtaining movement average velocity according to the transition time, and the centre distance of the upstreamcapacitance sensor and the downstream capacitance sensor, and demarcating the capacitance signals subjected to frequency transmission to obtain the duty ratio of the kernels; and fourthly, obtaining instant mass flow according to the movement average velocity and the duty ratio of the kernels, and obtaining the seeding quantity of an unit area according to the instant mass flow, the moving velocity, the breadth and the number of lines of the planter. The invention realizes the online measurement of the seeding quantity of the precision planter.

Description

technical field [0001] The invention belongs to the technical field of on-line detection of precision agricultural machinery and equipment, and relates to an intelligent detection device for a precision seeder, in particular to an on-line measurement device for the seeding amount of a precision seeder. Background technique [0002] In recent years, with the development of precision seeding technology, the precision seeder, one of the important equipment of precision agriculture, has become the main feature of modern agricultural seeding. The seeding rate detection of the seeder is the premise of implementing precise seeding control, but there is still no effective detection method for the seeding rate of the seeder. [0003] At present, most researches on the detection of seeding rate of precision seeders focus on photoelectric method and image method. [0004] The photoelectric method is to install the photoelectric sensor on the seed guide tube. When the wheat grains pass...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P3/80G01F1/86A01C7/00
Inventor 张小超胡小安周利明
Owner CHINESE ACAD OF AGRI MECHANIZATION SCI
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