CN104396388A - Membrane-side millet drill seeder being free of thinning - Google Patents
Membrane-side millet drill seeder being free of thinning Download PDFInfo
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- CN104396388A CN104396388A CN201410545206.2A CN201410545206A CN104396388A CN 104396388 A CN104396388 A CN 104396388A CN 201410545206 A CN201410545206 A CN 201410545206A CN 104396388 A CN104396388 A CN 104396388A
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Abstract
A membrane-side millet drill seeder being free of thinning belongs to agricultural machinery and is composed of a tractor, a plough, a travelling wheel, a membrane hanging roller, a soil hooking disk, a membrane unfolding roller, a membrane pressing roller, a millet seeding disk, a millet transporting pipe, a soil covering disk, a repressing roller, a water tank, a millet hopper and a fertilizer hopper. The plough, the travelling wheel, the membrane hanging roller, the soil hooking disk, the membrane unfolding roller, the membrane pressing roller, the millet seeding disk, the millet transporting pipe, the soil covering disk, the repressing roller, the water tank, the millet hopper and the fertilizer hopper are all fixedly installed on a rack. The rack is connected to the tractor. A vibrating device is installed on the millet hopper. A material discharging plate and a millet granule counting controller are installed at a millet discharging position of the millet hopper. The material discharging plate is connected to the millet granule counting controller. The membrane-side millet drill seeder can achieve integration of millet membrane-covering planting and membrane-side quantitative drill seeding and especially can achieving quantitative seeding, can save seed usage amount and can reduce a seeding cost.
Description
Technical field
The invention belongs to agricultural machinery, is small-sized millet sower, particularly relates to one and exempts from thinning film side millet drilling machine.
Background technology
Millet is one of the northern area of China staple food crop.Cultivated area accounts for about 5% of national cereal crops sowing area, accounts for 10 ~ 15% of northern cereal crops sowing area, larger at some Hills areas, accounts for 30 ~ 40% of grainfield area.
Because millet is drought-enduring, barren-resistant, strong stress resistance, wide adaptability, therefore plant more on high mountain abrupt slope or the barren arid plot of soil, show the characteristic of drought resisting stable yields after emerging, harvest is better.Both can as drought-resistant crops, crop genetics of can preparing against natural disasters again.But because most of Drylands are sternly rainless for spring, sowing problem of keeping a full stand of seedings still has a strong impact on millet and normally produces.Date of seeding soil moisture conservation difficulty and the under-supply bottleneck remaining the production of restriction millet and output lifting of moisture in vegetative period.
Millet film-covering planting has very large soil moisture conservation, is incubated, keeps a full stand of seedings, effect of increasing production, can make full use of soil moisture in sowing, ensures to sow on schedule.Therefore, in the dry type district that soil is barren, adopt Plastic-film corn plantation millet respond well.
Millet wheat grown along film sides can ensure soil moisture content to a great extent, improves ground temperature, ensure emergence rate, therefore Dryland millet peasant household advanced pedestrian's work covering with plastic film, then the drilling of caudacoria side trench digging.But, artificial overlay film and film side trench digging drilling operation link loaded down with trivial details and time-consuming, need to take several labour, labour intensity amount is large.
, there is function millet film-side drilling machine simply in the advantage of keeping a full stand of seedings for millet Membranous growth and the time-consuming feature of artificial film-side drilling.The mulch film of one general configuration wide cut 40cm, film both sides field planting 2 row millet, all adopts trench digging bar broadcast mode.
Existing millet film-side drilling machine is generally manpower or people and animals in conjunction with working method, if select manpower production method, at least need 2 between twenty and fifty manpowers to pull machinery, and 1 labour grasps and balancing machine, adds up to and takies artificial 3 ~ 4.If the production method selecting people and animals to combine, then need 1 livestock (farm cattle etc.) to pull machinery, catch up with workday per draught animal for 1,1 labour grasps and balancing machine, adds up to and takies animal power 1, artificial 2.Two kinds of mode of operation intensity are very large, all take at least 2 manpowers.Existing millet film-side drilling machinery is general adopts mechanical type gear hobbing type seeding unit, and belong to continuous dispenser, therefore the amount of sowing is large, and spacing in the rows is uneven, and seedling stage must artificial thinning.
Summary of the invention
In order to reduce the amount of sowing, the invention provides a kind of portable and exempting from thinning film side millet drilling machine.It can realize covering with plastic film and carry out film-side drilling, and exempts from the drilling machine of thinning seedling stage, realizes the soil moisture conservation of Dryland cereal millet sowing link, seedling protecting effect, also for thinning link is saved in seedling management.
Technical scheme of the present invention: one exempts from thinning film side millet drilling machine, by tractor, plough, road wheel, biofilm roller, hook soil dish, film-spreading roller, pressing wheel, broadcasts paddy dish, paddy feeding pipe, earthing dish, pack roller, and water tank, paddy hopper, fertiliser bucket form;
Plough, road wheel, biofilm roller, hook soil dish, film-spreading roller, pressing wheel, broadcasts paddy dish, paddy feeding pipe, earthing dish, pack roller, and water tank, paddy hopper and fertiliser bucket are all fixedly installed togather with frame, and frame is connected with tractor; Paddy hopper is provided with vibrator, and the rice outlet place of paddy hopper is provided with blanking plate and grain counter controller, and blanking plate connects grain counter controller;
Paddy hopper connects paddy feeding pipe, and paddy feeding pipe inserts and broadcasts paddy dish; Broadcast paddy dish to be made up of fixed disk and rotating disc, fixed disk is coaxial with rotating disc, and fixed disk is welded on axle sleeve, and rotating disc is connected with rotating shaft by bearing;
Fixed disk is provided with circular socket holes, and paddy feeding pipe inserts this circle jack, and paddy feeding pipe mouth aims at the baffle plate of rotating disc;
The periphery of rotating disc is equidistant arranges some lower paddy mouths, and rotating disc is provided with grain guiding trough, and grain can import in lower paddy mouth by grain guiding trough; The top of lower paddy mouth is sharp end;
Described grain counter controller comprises light source, sensor, amplifying circuit, comparison circuit, single-chip microcomputer and A/D converter, D/A converter, sensor obtains grain shielding signals, sensor input signal is amplified to suitable amplitude through amplifying circuit, the passage threshold voltage exported with D/A converter compares, produce digit pulse and carry out accumulated counts by counter, data are read again by single-chip microcomputer, by being closed the blanking plate of shut-in hopper after A/D converter conversion by I/O controller gauge tap, paddy hopper is made to export the seed having metering.
The present invention can realize the quantitative drilling integration of millet film-covering planting and film side, particularly quantitatively can sow, save seed consumption, reduce sowing cost, eliminate thinning operation in seedling stage, reduce labour intensity; Solve soil moisture conservation in Dryland cereal sowing time, an insulation difficult problem simultaneously, overcome millet open country in sowing time flat planting because of the topsoil evaporation of water in soil and cannot sow or postpone rapidly the problem of date of seeding.Plastic film mulch ridge is formed arc, effectively make use of rainfall.
The present invention, by carrying out millet wheat grown along film sides, overcomes because of sending out of causing of the few moisture in the soil of the topsoil evaporation of water in soil in seedling stage that seedling is slow, seedling gesture is weak and soil moisture such as cannot to take root less at the defect.
Accompanying drawing explanation
Fig. 1 is front view of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the schematic enlarged-scale view of seed tray in the present invention.
Fig. 4 is the schematic enlarged-scale view of seeder in the present invention.
Fig. 5 is cooperation position figure between rotating disc 23 and paddy feeding pipe 8 in the present invention.
Fig. 6 is the block diagram of grain counter controller in the present invention.
Fig. 7 is the amplification circuit diagram of grain counter controller in the present invention.
Fig. 8 is the comparison circuit figure of grain counter controller in the present invention.
Fig. 9 is the analog-to-digital converter circuit figure of grain counter controller in the present invention.
In figure, 1, plough, 2, road wheel, 3, biofilm roller, 4, hook soil dish, 5, film-spreading roller, 6, pressing wheel, 7, broadcast paddy dish, 8, paddy feeding pipe, 9, earthing dish, 10, pack roller, 11, water tank, 12, paddy hopper, 13, rice outlet, 14, vibrator, 15, blanking plate, 16, grain counter controller, 17, fertiliser bucket, 18, frame, 19, Xia Guzui, 20, grain guiding trough, 21, rotating shaft, 22, fixed disk, 23, rotating disc, 24, jack, 25, baffle plate.
Embodiment
Shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, portable exempts from thinning film side millet drilling machine, comprise actuating unit (tractor), plough 1, road wheel 2, biofilm roller 3, hook soil dish 4, film-spreading roller 5, pressing wheel 6, broadcasts paddy dish 7, paddy feeding pipe 8, earthing dish 9, pack roller 10, water tank 11, paddy hopper 12, fertiliser bucket 17 form.
Plough 1, road wheel 2, biofilm roller 3, hook soil dish 4, film-spreading roller 5, pressing wheel 6, broadcasts paddy dish 7, paddy feeding pipe 8, earthing dish 9, pack roller 10, and water tank 11, paddy hopper 12 and fertiliser bucket 17 are all fixedly installed togather with frame 18.Frame 18 is connected with tractor.
Frame adopts metal tube to be welded into frame structure.
By biofilm roller 3, hook soil dish 4, film-spreading roller 5, pressing wheel 6 forms film-covering mechanism.
By paddy hopper 12, paddy feeding pipe 8, broadcast paddy dish 7, earthing dish 9, vibrator 14, blanking plate 15, grain counter controller 16, fixed disk 22, rotating disc 23 form sowing mechanism.
Fixed disk 22 is coaxial with rotating disc 23, and fixed disk 22 is welded on axle sleeve, and rotating disc 23 is connected with rotating shaft 21 by bearing.
Broadcast paddy dish 7 to be made up of fixed disk 22 and rotating disc 23.Fixed disk 22 is provided with circular socket holes 24, and paddy feeding pipe 8 inserts this circle jack 24, and paddy feeding pipe mouth aims at the baffle plate 25 of rotating disc 23.
The periphery of rotating disc 23 is equidistant arranges some lower paddy mouths 19, and rotating disc 23 is provided with grain guiding trough 20, and grain can import in lower paddy mouth 19 by grain guiding trough 20.The top of lower paddy mouth 19 is most advanced and sophisticated, and the effect of lower paddy mouth 19 also has the function penetrating film.
The rice outlet 13 of paddy hopper 12 is finedraw, and paddy hopper 12 is provided with vibrator 14, and vibrator 14 is vibrating motor.
Rice outlet 13 place is provided with blanking plate 15, and blanking plate 15 controls folding by grain counter controller 16.
Shown in Fig. 6, grain counter controller comprises light source, sensor, amplifying circuit, comparison circuit, single-chip microcomputer and A/D converter, D/A converter, sensor obtains grain shielding signals, sensor input signal is amplified to suitable amplitude through amplifying circuit, the passage threshold voltage exported with D/A converter compares, produce digit pulse and carry out accumulated counts by counter, data are read again by single-chip microcomputer, by being closed the blanking plate of shut-in hopper after A/D converter conversion by I/O controller gauge tap, paddy hopper is made to export the seed having metering.
Described sensor adopts photoresistance formula sensor.
Shown in Fig. 7, described amplifying circuit comprises one-level amplifying circuit and second amplifying circuit, and one-level amplifying circuit comprises resistance Rl, resistance R2, resistance R3, resistance R4, resistance R5 and resistance R6, electric capacity Cl, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10 and electric capacity C11 and operational amplifier Ul and operational amplifier U2,3 pin of operational amplifier Ul meet input V2 through resistance Rl, the two ends of resistance Rl are respectively through electric capacity Cl and electric capacity C2 ground connection, electric capacity C3 is connected between 8 pin of operational amplifier Ul and 5 pin, electric capacity C4 is connected between 1 pin and 5 pin, 7 pin connect+5V power supply, 4 pin connect-5V power supply, the resistance R2 indirectly in parallel of 2 pin and 6 pin and electric capacity C10,3 pin of operational amplifier U2 meet input Vl through resistance R4, resistance R4 two ends are respectively through electric capacity C6 and electric capacity C7 ground connection, electric capacity C8 is connected between 8 pin of operational amplifier U2 and 5 pin, electric capacity C9 is connected between 1 pin and 5 pin, 7 pin connect+5V power supply, 4 pin connect-5V power supply, the resistance R5 indirectly in parallel of 2 pin and 6 pin and electric capacity C11, contact resistance R3 between 2 pin of operational amplifier Ul and 2 pin of operational amplifier U2,6 pin of operational amplifier U2 are through resistance R6 and electric capacity C5 ground connection.
Second amplifying circuit operational amplifier U3, resistance R7 to resistance R9 and electric capacity C12 is to electric capacity C15, the 2 pin contact resistance R7 of operational amplifier U3, resistance R8 and electric capacity C12, 6 pin of the other end concatenation operation amplifier Ul of resistance R7 and electric capacity C13, output pin 6 pin of other end concatenation operation amplifier U3 of resistance R8 and the other end of electric capacity C13, another termination capacitor C5 of electric capacity C12 ground connection, 3 pin of operational amplifier U3 are through resistance R9 ground connection, electric capacity C14 is connected between 8 pin and 5 pin, electric capacity C15 is connected between 1 pin and 5 pin, 7 pin connect+5V power supply, 4 pin connect-5V power supply.
Shown in Fig. 8, the switch 101 of described comparison circuit is connected between the positive terminal voltage Vip of analog input signal and capacitor 1011, switch 102 is connected between the negative terminal voltage Vin of analog input signal and capacitor 1012, switch 3 is connected between the negative terminal voltage Vrn of reference voltage and capacitor 1013, and switch 104 is connected between the positive terminal voltage Vrp of reference voltage and capacitor 1014.Jointly link together respectively at the terminal with the capacitor 1011 on these switches relative edge and capacitor 1013 and capacitor 12 and capacitor 14.
Switch 105 is connected between the input and output terminal of reverser 1021, switch 106 is connected between the input and output terminal of reverser 1022, switch 107 is connected between the input of reverser 1021 and the output of reverser 1022, and switch 108 is connected between the output of reverser 1021 and the input of reverser 1022.Further, switch 109 is connected between the tie point of switch 101 and capacitor 1011 and the tie point of switch 102 and capacitor 1012, and switch 1010 is connected between the tie point of switch 103 and capacitor 1013 and the tie point of switch 104 and capacitor 1014.
First, under input sample mode situation, switch 101,102,103,104,105,106,107 and 108 is connected and switch 109 and 1010 disconnects.
Therefore, difference between the positive terminal voltage Vip of analog input signal and reverser 1021 logical threshold voltage VLT1 is stored in capacitor 1011, and the difference between the negative terminal voltage Vrn of reference voltage and reverser 1021 logical threshold voltage VLT1 is stored in capacitor 1013.Also have, difference between the negative terminal voltage Vin of analog input signal and reverser 1022 logical threshold voltage VLP2 is stored in capacitor 1012, and the difference between the positive terminal voltage Vrp of reference voltage and the logical threshold voltage VLP2 of reverser 22 is stored in capacitor 1014.
When entering amplification mode, switch 109 and 1010 is connected, and switch 101,102,103,104,105,10 6,107 and 108 disconnect.
Therefore, capacitor 1011 and capacitor 1012 are connected in series, and the circuit of this series connection and the same capacitor 1013 be connected in series are together with 1014 parallel joins.Thus the electric charge that capacitor 1011,1012,1013 and 1014 stores is reallocated, and the difference removed between the analog input signal of common-mode voltage and the reference voltage of removing common-mode voltage is formed between the constrained input end of reverser 1021 and 1022.In this case, reverser 1021 amplifies the potential change from logical threshold voltage input, and reverser 1022 amplifies the potential change from logical threshold voltage input, and it is following to produce output voltage Vol and Vo2 respectively, when entering locking mode, switch 107,108,109 and 1010 connect, and switch 101,102,103,104,105 and 106 disconnect.Therefore, because reverser 1021 and 1022 has been applied in positive feedback, so reverser 1021 and 1022 is operated in flip-flop states.In this case, increase reverser 1021 and and output amplitude asymmetric, it is the differential voltage of positive terminal voltage Vip by analog input signal and negative terminal voltage Vin, and the difference between the positive terminal voltage Vrp of reference voltage and the differential voltage of negative terminal voltage Vrn produces.
The common-mode voltage Vic of analog input signal and the common-mode voltage Vrc of reference voltage can eliminate, and is only that difference between analog input signal and reference voltage is formed between reverser 1021 and the input of 1022.Even if when there is difference between the common-mode voltage and the common-mode signal of reference voltage of analog input signal, what amplify when amplification mode is only difference between analog input signal and reference voltage, large and small between analog input signal Vi and reference voltage Vr can be determined, and not by the impact of the common-mode voltage of analog input signal and the common-mode voltage of reference voltage in locking mode.
Described single-chip microcomputer adopts EM78P156ELP-G;
Shown in Fig. 9, analog signal is converted to the binary signal of 2 by described A/D converter.Converter has the input 204 for receiving analog signal Vin and the reference voltage input 206 for receiving reference voltage V ref, and input 206 is connected to the resistor 208 of 4 arranged in series.Be provided with three comparators 2010 (being denoted as Sl, S2 and S3), comparator is powered by power supply V+, and their non-inverting input is connected to analog signal Vin.The inverting input of each comparator 2010 is connected to the point between each pair of resistor 208.Therefore, 208 are used as the divider of each comparator 2010, make the inverting input of comparator receive the voltage of Vref, 2Vref and 3Vref respectively.The output (being denoted as Dl, D2 and D3) of comparator 2010 is arranged at and the comparator received is exported the digital conversion block 2012 being converted to 2 binary signals (B0, Bl).
The product DAC7552 that described D/A converter adopts Panasonic Electric Equipment Industrial Co., Ltd to produce.Data-converting block 2012 adopts DAC0832.
The present invention has carried out film side millet drilling machine process (hereinafter referred to as the machine sowing of film side) and traditional single-row sowing-plough open country drilling (CK) planting type Piglet s colibacillosis at Shouyang dry farming class area, experimental field be positioned at dry farming and water-saving irrigation experiment and demonstration base, Zong Ai town, Shouyang County, Shanxi Province (113 ° of 06 ' E, 37 ° of 58 ' N), be located in warm temperate zone Semihumid area liable to drought, average annual temperature 7.4 DEG C, >=10 DEG C of accumulated temperature 3400 DEG C, annual rainfall 501.1mm, year evaporation discharge 1600 ~ 1800 mm, frost-free season about 130 d, year sunshine duration 2858.3 h.Be experimental field cinnamon soil soil, soil parent material is Malan loess, bury of groundwater more than 50 meters, profile in dry highland of Loess Plateau ground.The anhydrous sharp facility in test area.Preceding crop is soybean.Experimental cultivar is Shanxi paddy No. 29.Test is two process check experiments, if 3 times are repeated, plot area is 10 × 10m
2, the sowing time is on May 4th, 2012, and two process field management links are consistent.Harvest time compares the biological yield proterties of millet under two kinds of planting types and economic benefit situation.
The COMPARISON OF CHARACTERS table of different planting
。
By carrying out COMPARISON OF CHARACTERS discovery, film side machine sowing millet not only individual plants is comparatively large, and individual economy output is higher, improves one-tenth graininess, the Cheng Suixing of millet.Machine sowing yield per plant in film side is than contrast raising 2.6 g, and single-strain grain weight improves 2.5g.The individual effectively dry matter ability of film side machine sowing millet is comparatively strong, for the raising of population yield is laid a good foundation.
The Yield compari@of millet different planting
。
Adopt the present invention's cultivation very remarkable to millet quantitative effect, P>0.01, the per mu yield of machine sowing reaches 392.9kg, and than contrast volume increase 46.6kg, rate of growth is 13.4%, obvious effect of increasing production.
The benefit comparison of millet different planting
From economic benefit, the present invention broadcasts planting type per mu yield value and reaches 942 yuan, increases income 111 yuan than contrast, more traditional nearly 80 yuan of open country drilling mu net added value after deduction mulch film drops into.
Experimental cultivation example 1:2011 adopted the present invention to sow April 18, millet variety Shanxi paddy No. 29; In region, Zong Ai village, Shouyang County, Shanxi Province, sowing area 1 mu, plot is smooth bonding lift; Base fertilizer sowing amount nitric acid phosphorus 40kg, sowing quantity 263g; Wide-and narrow-row is sowed, wide line-spacing 40cm, and narrow row is apart from 20cm; The accumulative sowing time be 1 hour 46 points; After emerging, in plot, get five regions according to quincunx, in each area test 5 meters row is long, millet emerges number, and the number of on average emerging in the present embodiment 5 meters row is long is 119 strains, and real receipts output is 354.4kg/ mu.
Experimental cultivation example 2:2011 adopted the present invention to sow April 18, millet variety Shanxi paddy No. 29; In region, Zong Ai village, Shouyang County, Shanxi Province, sowing area 1 mu, plot is smooth bonding lift; Base fertilizer sowing amount nitric acid phosphorus 40kg, sowing quantity 258g; Wide-and narrow-row is sowed, film both sides millet line space 40cm, millet line space 20cm between film border; The accumulative sowing time be 1 hour 58 points; After emerging, in plot, get five regions according to quincunx, in each area test 5 meters row is long, millet emerges number, and the number of on average emerging in the present embodiment 5 meters row is long is 132 strains, and real receipts output is 392.9kg/ mu.
Claims (4)
1. exempt from a thinning film side millet drilling machine, it is characterized in that by tractor, plough, road wheel, biofilm roller, hook soil dish, film-spreading roller, pressing wheel, broadcasts paddy dish, paddy feeding pipe, earthing dish, pack roller, and water tank, paddy hopper, fertiliser bucket form;
Plough, road wheel, biofilm roller, hook soil dish, film-spreading roller, pressing wheel, broadcasts paddy dish, paddy feeding pipe, earthing dish, pack roller, and water tank, paddy hopper and fertiliser bucket are all fixedly installed togather with frame, and frame is connected with tractor; Paddy hopper is provided with vibrator, and the rice outlet place of paddy hopper is provided with blanking plate and grain counter controller, and blanking plate connects grain counter controller;
Paddy hopper connects paddy feeding pipe, and paddy feeding pipe inserts and broadcasts paddy dish; Broadcast paddy dish to be made up of fixed disk and rotating disc, fixed disk is coaxial with rotating disc, and fixed disk is welded on axle sleeve, and rotating disc is connected with rotating shaft by bearing;
Fixed disk is provided with circular socket holes, and paddy feeding pipe inserts this circle jack, and paddy feeding pipe mouth aims at the baffle plate of rotating disc;
The periphery of rotating disc is equidistant arranges some lower paddy mouths, and rotating disc is provided with grain guiding trough, and grain can import in lower paddy mouth by grain guiding trough; The top of lower paddy mouth is sharp end.
2. one exempts from thinning film side millet drilling machine according to claim 1, it is characterized in that described grain counter controller comprises light source, sensor, amplifying circuit, comparison circuit, single-chip microcomputer and A/D converter, D/A converter, sensor obtains grain shielding signals, sensor input signal is amplified to suitable amplitude through amplifying circuit, the passage threshold voltage exported with D/A converter compares, produce digit pulse and carry out accumulated counts by counter, data are read again by single-chip microcomputer, by being closed the blanking plate of shut-in hopper after A/D converter conversion by I/O controller gauge tap, paddy hopper is made to export the seed having metering.
3. one exempts from thinning film side millet drilling machine according to claim 1, and it is characterized in that described amplifying circuit comprises one-level amplifying circuit and second amplifying circuit, one-level amplifying circuit comprises resistance Rl, resistance R2, resistance R3, resistance R4, resistance R5 and resistance R6, electric capacity Cl, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10 and electric capacity C11 and operational amplifier Ul and operational amplifier U2,3 pin of operational amplifier Ul meet input V2 through resistance Rl, the two ends of resistance Rl are respectively through electric capacity Cl and electric capacity C2 ground connection, electric capacity C3 is connected between 8 pin of operational amplifier Ul and 5 pin, electric capacity C4 is connected between 1 pin and 5 pin, 7 pin connect+5V power supply, 4 pin connect-5V power supply, the resistance R2 indirectly in parallel of 2 pin and 6 pin and electric capacity C10,3 pin of operational amplifier U2 meet input Vl through resistance R4, resistance R4 two ends are respectively through electric capacity C6 and electric capacity C7 ground connection, electric capacity C8 is connected between 8 pin of operational amplifier U2 and 5 pin, electric capacity C9 is connected between 1 pin and 5 pin, 7 pin connect+5V power supply, 4 pin connect-5V power supply, the resistance R5 indirectly in parallel of 2 pin and 6 pin and electric capacity C11, contact resistance R3 between 2 pin of operational amplifier Ul and 2 pin of operational amplifier U2,6 pin of operational amplifier U2 are through resistance R6 and electric capacity C5 ground connection,
Second amplifying circuit operational amplifier U3, resistance R7 to resistance R9 and electric capacity C12 is to electric capacity C15, the 2 pin contact resistance R7 of operational amplifier U3, resistance R8 and electric capacity C12, 6 pin of the other end concatenation operation amplifier Ul of resistance R7 and electric capacity C13, output pin 6 pin of other end concatenation operation amplifier U3 of resistance R8 and the other end of electric capacity C13, another termination capacitor C5 of electric capacity C12 ground connection, 3 pin of operational amplifier U3 are through resistance R9 ground connection, electric capacity C14 is connected between 8 pin and 5 pin, electric capacity C15 is connected between 1 pin and 5 pin, 7 pin connect+5V power supply, 4 pin connect-5V power supply.
4. one exempts from thinning film side millet drilling machine according to claim 1, it is characterized in that the switch (101) of described comparison circuit is connected between the positive terminal voltage Vip of analog input signal and capacitor (1011), switch (102) is connected between the negative terminal voltage Vin of analog input signal and capacitor (1012), switch (103) is connected between the negative terminal voltage Vrn of reference voltage and capacitor (1013), and switch (104) is connected between the positive terminal voltage Vrp of reference voltage and capacitor (1014);
Jointly link together respectively at the terminal with the capacitor (1011) on these switches relative edge and capacitor (1013) and capacitor (1012) and capacitor (1014).
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| CN201410545206.2A CN104396388B (en) | 2014-10-16 | 2014-10-16 | One exempts from thinning film side millet drill for sowing in lines |
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| CN201410545206.2A CN104396388B (en) | 2014-10-16 | 2014-10-16 | One exempts from thinning film side millet drill for sowing in lines |
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| CN105706590A (en) * | 2016-02-25 | 2016-06-29 | 朱景建 | Screening and separate storing system for electrically-controlled rice precision hole direct sowing machine |
| CN108093767A (en) * | 2017-03-28 | 2018-06-01 | 武汉优视科技有限公司 | A kind of ejection type feed mechanism for seed and field machinery |
| CN110663319A (en) * | 2019-11-21 | 2020-01-10 | 西南大学 | Seed manure mixes seeder |
| CN110809960A (en) * | 2019-11-25 | 2020-02-21 | 山西省农业科学院棉花研究所 | Dibbler |
| CN110809960B (en) * | 2019-11-25 | 2024-05-10 | 山西省农业科学院棉花研究所 | Dibble seeder |
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| CN103766050A (en) * | 2014-01-03 | 2014-05-07 | 山西省农业科学院玉米研究所 | Corn mulching film ridge paving and lateral seeding sowing machine |
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| CN108093767A (en) * | 2017-03-28 | 2018-06-01 | 武汉优视科技有限公司 | A kind of ejection type feed mechanism for seed and field machinery |
| CN110663319A (en) * | 2019-11-21 | 2020-01-10 | 西南大学 | Seed manure mixes seeder |
| CN110663319B (en) * | 2019-11-21 | 2021-07-27 | 西南大学 | Seed manure mixes seeder |
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