Intelligent anti-blockage non-miss-seeding pneumatic type plug seedling precision seed-metering device

Abstract

The invention discloses an intelligent anti-blockage non-miss-seeding pneumatic type plug seedling precision seed-metering device. Each seed sucking hole in the seed-metering device is provided with a seed sucking detection switch for detecting whether a seed is sucked in each seed sucking hole so as to realize intelligent detection; if the seed is sucked in the corresponding seed sucking hole, a closed space is formed between the hole and the seed, and under the effect of a pneumatic force, a movable contact of the detection switch moves upwards, so that the closed space is closed; during seed discharging, the seed falls down under the effect of the pneumatic force, and the switch is used for releasing the contact to be disconnected. Information of the detection switch is sent to a computer control system, and the computer control system sends a corresponding motion control signal after intelligent judgment according to the signal; after seeds are sucked on all seed sucking holes, a seed sucking component is moved to seed discharging positions for discharging seeds; if seed discharging is not completed since the seed sucking holes are blocked, an electromagnetic seed cleaning assembly of the seed sucking holes is started to realize seed cleaning, and the seed sucking component returns for sucking seeds only when the seeds are cleaned out of all seed sucking holes.

Description

technical field [0001] The invention belongs to the technical field of pneumatic precision seeding for industrialized plug seedling cultivation of agricultural machinery, in particular to an intelligent anti-blocking and non-missing sowing pneumatic precision seed metering device for plug seedling cultivation. Background technique [0002] The pneumatic precision seed metering device belongs to the technical category of precision seeding equipment for industrialized seedling cultivation. The precision seeding device is the core equipment technology of precision seeding equipment, which directly affects the effect of sowing. Its popularization will effectively promote the development of industrialized seedling raising precision seeders and indoor modern agriculture, save a lot of manpower and expensive seeds, improve the working environment and labor intensity of cultivation technicians, and achieve better economic and social benefits. [0003] At present, the pneumatic preci...

AI Technical Summary

Problems solved by technology

It is manifested in that due to the leakage of seeds, some or more holes are not sown with seeds, which wastes the points and greatly reduces the economic benefits. There are two situations for the leakage of precision seeding. One is that the seeder itself does not discharge to Seeds, the other kind cannot be planted due to the blockage of the hole, that is, the following two problems must be solved: it is necessary to ensure that the hole that leaks the seed can be detected and at the same time control the suction movement of the seed suction system on the seeder; To block the hole and at the same time control the operation of the anti-blocking mechanism or equipment

The above-mentioned various seeders and the seed meters they are equipped with do not have relatively complete related seeding leak detection devices, and there is no seeding device that can directly repair leaks. Many methods such as electronic monitoring and single-chip microcomputer control are used for monitoring at home and abroad. For missed seeding, replanting is carried out according to monitoring. For example, Ma Xu, Li Wei and others use computer image technology to detect the seeding status or sowing status of the metering device; China Agricultural University Jin Hengmo has carried out automatic monitoring and automatic compensation for precision seeders , and use the air blockage removal system to remove the blockage; Yang Wanzhang and Guo Hui of Xinjiang Agricultural University have developed an elastic needle anti-blocking device for the vertical disc precision metering device, which is easy to damage the seeds; most of the above are based on computer image technology after sowing, Infrared detection technology is used to detect the image of seeds after sowing or whether there are seeds falling, and then replant, which is a passive method of replanting after the event, and has the disadvantages of low efficiency, high cost and high technical requirements.

Wang Zhiming and Zhang Shiping researched "a pneumatic precision metering device without seed leakage". The seed suction and release process of the device has high reliability, which is a better method, but it cannot intelligently control the movement or parameter adjustment of the seed suction system according to the sowing situation of the leaked suction seed. Seeds can't be planted all the time, and the efficiency drops

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