Method and device for monitoring motion state of seeds in vibration seed tray of seed metering apparatus

A technology of monitoring device and seed metering device, which is applied in the directions of planter parts, etc., can solve the problems of affecting the accuracy of seed suction and discharge, uneven seed distribution, and increased leakage and suction rate, so as to improve the quality and efficiency of work, improve the measurement accuracy and Stability, the effect of reducing vibration interference

Inactive Publication Date: 2013-11-20
JIANGSU UNIV
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Problems solved by technology

At present, the use of reciprocating vibrating seed discs to excite thin-layer seeds, so that the seeds are separated from each other to reduce the resistance of seed suction, is the main technical means to improve the sowing accuracy. Quantity, vibration state and distribution law are all dynamic parameters. As the number of sowing increases, the number of seeds in the seed tray will gradually decrease. Factors such as machine vibration and road surface roughness can easily lead to uneven distribution of seeds in the vibrating seed tray. , the seed layer in some areas is too thick to be effectively dispersed, and the seed layer in some areas is too thin to even have no seeds. T

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  • Method and device for monitoring motion state of seeds in vibration seed tray of seed metering apparatus
  • Method and device for monitoring motion state of seeds in vibration seed tray of seed metering apparatus
  • Method and device for monitoring motion state of seeds in vibration seed tray of seed metering apparatus

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Embodiment Construction

[0023] combine figure 1 , 2 , the four corners of the seed disc 1 are connected to the seeder frame 6 through four supporting springs 5, the seed disc 1 generates reciprocating vibration under the action of the vibration excitation part 4, and a plurality of monitoring sensitive elements 2 are installed at different positions on the inner surface of the seed disc 1 , the compensation sensitive element 3 is installed on the back of the seed disc 1 .

[0024] The monitoring sensitive element 2 can use piezoelectric materials such as PVDF piezoelectric film and piezoelectric ceramics. The number of monitoring sensitive elements 2 installed in the seed tray 1 can be 4-9 pieces, and the length and width of each piece are between 20- 50mm, thickness 30-100 μm, the installation position of the monitoring sensitive element 2 is evenly distributed on the inner surface of the seed plate 1, the monitoring sensitive element 2 and the seed plate 1 are pasted by flexible silicone, and can als

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Abstract

The invention provides a method and device for monitoring the motion state of seeds in a vibration seed tray of a seed metering device, which is mainly used for monitoring the motion state of seeds in the vibration seed tray during precision seeding and seedling raising of paddy rice and other granular grains with irregular shapes and small and medium sizes. The invention is characterized in that sensitive elements are arranged on the inner surface of the vibration seed tray of the seed metering apparatus in a multi-point manner and used for monitoring the impact signals of seeds in different areas of the seed tray; characteristic signals including seam thickness, dispersion degree and the like of seeds in a measuring area are obtained through a signal modulation circuit; and a secondary instrument collects parameters of the characteristic signals real-timely, performs multi-information fusion and calculates according to an established seed quantity monitoring model and an established seed dispersion state monitoring model so as to obtain the quantity, the distribution uniformity and the dispersion degree of seeds in the vibration seed tray. The method and device implements real-time monitoring of the motion state of seeds in the vibration seed tray of the seed metering apparatus and can provide a seed adding signal and a control signal of the vibration parameter of the seed tray.

Description

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Claims

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Application Information

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Owner JIANGSU UNIV
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