CN202232096U - Intelligent monitoring air-aspiration type precise metering seed sowing device - Google Patents
Intelligent monitoring air-aspiration type precise metering seed sowing device Download PDFInfo
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- CN202232096U CN202232096U CN2011203960531U CN201120396053U CN202232096U CN 202232096 U CN202232096 U CN 202232096U CN 2011203960531 U CN2011203960531 U CN 2011203960531U CN 201120396053 U CN201120396053 U CN 201120396053U CN 202232096 U CN202232096 U CN 202232096U
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Abstract
The utility model relates to a farm machine, which is an intelligent monitoring air-aspiration type precise metering seed sowing device. The utility model comprises a seed box (1), a vacuum chamber (4) and a sucking disc (2). The vacuum chamber (4) is communicated with the induced pipe (5) of a fan. The periphery of the sucking disc (2) is opened with a plurality of sucking holes (3). The utility model is characterized in that the seed sowing device is provided with a signal collector, a signal processor and a display, when miss-seeding occurs, the signal collector transmits the collected signal to the signal processor for processing, a warning signal can be sent out through the display. The utility model has the beneficial effects that the warning signal can be sent out immediately after miss-seeding occurs, operators can keep abreast of the actual condition of seed sowing at all times, so that measures can be taken to avoid the phenomenon of uneven seedling. Meanwhile the utility model has the characteristics of simple structure, easy installation, low cost, stable and reliable performance etc. And the device causes revolutionary changes to the technical content and the operating performance of the air-aspiration type precise metering seed sowing device.
Description
Technical field
The utility model relates to a kind of farm machinery, promptly a kind of intelligent monitoring driven sucking precise seeder.
Background technology
Driven sucking precise seeder is present more advanced agricultural seeder, mainly is applicable to the seeding operation of seeding corn and other crops.Its critical piece is the sucker that has a plurality of suctions hole and setting around a slice, and sucker can rotate under the drive of rotating shaft, and sucker one side is adjacent with box-like vacuum chamber, and opposite side communicates with the kind case.Except that a small amount of area in bottom, the big portion of sucker is all covered by vacuum chamber.Start air pump during work, form negative pressure in the vacuum chamber, the suction hole on the sucker is drawn onto the seed of other side on the hole and rotates, and after inhaling hole disengaging vacuum chamber, seed loses suction and falls.Compare with seeding units such as other indent types, grooved pulley types, the air-suction seeding unit precision is high, and the position is accurate, economizes kind of a saving of labor, can realize the precision point sowing of single cave individual plant., because farm work condition more complicated, shape of the seed is also variant, and fluctuation also can appear in suction system, and air-suction seeding unit also broadcast leakage can occur.Because sowing quantity is few, broadcast leakage occurs and will cause the disconnected bar of being short of seedling, so the leakage sowing rate of air-suction seeding unit is the operational indicator of a strict restriction., in seeding operation, also be difficult to find even broadcast leakage occurred.Therefore, people can only improve the uniformity of seed through improving the facility quality, improve the operating condition in farmland, and measures such as reduction speed of drilling reduce leakage sowing rate, but can't understand the seeding truth at any time, also have certain blindness and risk.
Summary of the invention
The purpose of the utility model provides a kind ofly can understand the seeding situation at any time, particularly grasps and control the intelligent monitoring air inhaling type fine sowing device of broadcast leakage situation.
Above-mentioned purpose is realized by following technical scheme: develop a kind of intelligent monitoring driven sucking precise seeder, comprise seed-box, vacuum chamber and sucker, vacuum chamber communicates with the induced duct of blower fan, has a plurality of suctions hole around the sucker.Be characterized in: on said seeding unit, be provided with signal picker, signal processor and display.When broadcast leakage occurring, signal picker is sent to signal processor processes after display sends alarm signal with the signal of gathering.
Said signal picker is provided in a side of the photodiode of sucker both sides.
Said signal processor is the two BCD plus coujnt chips of LM339 integrated circuit and CD4518.
Said display is an acousto-optic warning circuit.
Said photodiode has two groups; A group photodiode is located at the below of vacuum chamber, is made up of a transmitting tube and a receiving tube, is contained in the both sides of sucker respectively; B group photodiode is contained in the both sides in seeds fall path, sucker below, and five transmitting tubes and five receiving tubes are arranged respectively.
The two BCD plus coujnt chips of said photodiode and signal processor LM339 integrated circuit and CD4518 interrelate.
Two BCD plus coujnt chips of said signal processor LM339 integrated circuit and CD4518 and acousto-optic warning circuit interrelate.
Said acousto-optic warning circuit is to be made up of light emitting diode and buzzer.
The beneficial effect of the utility model is: when broadcast leakage occurring, give the alarm immediately, the operator can grasp the actual conditions of seeding at any time, so that take measures, avoids causing the phenomenon of disconnected bar of being short of seedling.Also have characteristics such as simple in structure, easy for installation, with low cost, reliable and stable simultaneously, make the technology content of driven sucking precise seeder and transaction capabilities that revolutionary variation take place.
Description of drawings
Fig. 1 is the front view of a kind of embodiment;
Fig. 2 is the left view of this embodiment;
Fig. 3 is the circuit diagram of the parts signal picker of this embodiment;
Fig. 4 is the LM339 integrated circuit diagram of the signal processor of this embodiment;
Fig. 5 is the integrated circuit diagram of counter of the signal processor of this embodiment.
Visible among the figure: seed-box 1, sucker 2 is inhaled hole 3, vacuum chamber 4, induced duct 5, rotating shaft 6, A organizes photodiode 7, and B organizes photodiode 8, seed 9.
Embodiment
Embodiment: Fig. 1,2 a kind of driven sucking precise seeder of having given an example; Visible by figure; The periphery of sucker (2) is provided with a plurality of suctions hole (3), and sucker (2) both sides are respectively equipped with seed-box (1) and vacuum chamber (4), and vacuum chamber (4) has induced duct (5) to link to each other with the air pump of facility; Sucker (2) is connected with rotating shaft (6) mutually, can under the drive of rotating shaft (6), rotate.Seed-box wherein (1), vacuum chamber (4) and rotating shaft (6) all rely on frame mutually.Certainly, rotating shaft (6) also can link to each other with sucker in seed-box (1) one side.During work, open air-introduced machine, form negative pressure in the vacuum chamber (4), rotate sucker (2), can seed be adsorbed onto on the hole (3), when suction hole (3) forwarded the outer below of vacuum chamber (4) to, suction disappeared, and seed is that reliable gravity is sowed.Because of belonging to conventional facility, its structure and operation principle all belong to prior art, and parts such as frame, air pump do not draw.Different with prior art is: this driven sucking precise seeder is provided with broadcast leakage electronic surveillance device, and this device mainly is made up of signal acquisition circuit, signal processing circuit and display circuit three parts.
Visible in conjunction with Fig. 3, signal acquisition circuit adopts two groups of photodiodes, and A group photodiode is to be made up of a transmitting tube and a receiving tube, is installed in the both sides of seed plate respectively.B group photodiode is positioned on seed plate fall area both sides.Consider the uncertainty of seeds fall position, widened the control range of second group of photodiode.Promptly respectively be increased to five to transmitting tube and receiving tube,, can not be close to each other because photoelectric tube is circular individuality, so we they be processed into square.Such five pipes just can very compact being fixed together.When the suction aperture on the seed plate is crossed A group photodiode, produce a pulse signal, in the seeds fall process, pass B group photodiode, can produce a pulse signal again.
The photodiode here is the equipment commonly used that optical signal changes the signal of telecommunication into, is the semiconductor devices that optical signal is become the signal of telecommunication.The core of photodiode is a PN junction, compares with general-purpose diode, and structurally different is: the PN junction area is bigger, is convenient to receive incident illumination.In addition, photodiode is worked under the backward voltage effect, and when not having illumination, reversing the current is very little, is generally less than 0.1MA, is called dark current.When illumination, after the photon that carries energy gets into PN junction, pass to energy on the covalent bond; With bound electron, make portions of electronics shake off covalent bond, the hole is right one by one thereby produce electronics; Be called photo-generated carrier, it still participates in drift motion under the backward voltage effect, makes reversing the current obviously become big.Illumination increases, and reversing the current also increases, and this rerum natura is called " photoconduction ".Photodiode is under the irradiate light of general brightness, and the electric current that is produced is photoelectric current, if on external circuit, connect load, load obtains the signal of telecommunication, and this signal of telecommunication changes with the variation of light each other.Photodiode has following characteristics:
1) forward conduction voltage drop is relevant with semi-conducting material, and generally between 1.5～2.3, wherein red LED is lower than the green LED, and common LED is lower than the high-brightness LED.
2) low in energy consumption: 200～2000mW.
3) drive circuit is simple, is easy to be used with integrated circuit.
4) response speed is fast: about 2 microseconds.
5) compare with white flag indicator lamp, work in little electric current and can obtain higher brightness, generally luminous in several milliamperes of beginnings at zero point, operating current is several milliamperes usually.
6) structural design is flexible, can be spliced into the large tracts of land display screen, and light emitting diode can directly convert electric energy to luminous energy apace, and it belongs to the active illuminating device, at electronic instrument, is used as demonstration in the instrument, status information indication etc.
Signal processing circuit comprises voltage comparator circuit shown in Figure 3 and counter shown in Figure 4.Wherein, voltage comparator can compare the relative size that is added between two analog signal voltages on its input, and comparative result with high level or the low level of output as criterion.The key technical indexes of comparator is minimum discriminating voltage MDV (claim again relatively sensitivity) and response time (difference voltage that refers to added two input signals is in close proximity to zero level and begins to reach required time of threshold level of regulation to output).What adopted here is the LM339 integrated package, and four independently voltage comparators are equipped with in inside, and the characteristics of this voltage comparator are:
1) offset voltage is little, and representative value is 2mV;
2) supply voltage wide ranges, single supply are 2-36V, and dual-supply voltage is ± 1V-± 18V;
3) to comparing the internal resistance restriction broad of signal source;
4) common mode range is very big, is 0～(Ucc-1.5V) Vo;
5) differential input voltage range is bigger, and is big to equaling supply voltage;
6) the output current potential can be selected for use flexibly and easily.
The LM339 integrated package adopts the encapsulation of C-14 type, and Fig. 4 is external form and pin Pareto diagram.Because LM339 uses flexibly, be widely used, can exchange with four comparators such as IR2339, ANI339, SF339 and use.Among the figure: 1,2,13,14 expression outputs, 4,5,6,7,8,9,10,11 expression inputs, 3 expressions connect positive pole, and 12 expressions connect negative pole.
LM339 is similar to the nonadjustable operational amplifier of gain.Each comparator has two inputs and an output.Two one of inputs are called in-phase input end, and with "+" expression, another is called inverting input, with "-" expression.When making comparisons two voltages, any input adds a fixed voltage and does reference voltage (be also referred to as threshold level, it can select any point of LM339 input common-mode range), and the other end adds a signal voltage to be compared.When "+" terminal voltage was higher than "-" end, efferent duct ended, and was equivalent to the output open circuit.When "-" terminal voltage was higher than "+" end, efferent duct was saturated, is equivalent to export the termination electronegative potential.Two input terminal voltage difference just can guarantee that greater than 10mV output can be transformed into another kind of state reliably from a kind of state, and therefore, it is more satisfactory being used in LM339 occasion such as Testing of Feeble Signals.The output of LM339 is equivalent to a transistor that does not connect collector resistance, and output generally must connect a resistance (be called pull-up resistor, select 3-15K) to positive supply in use.Select the pull-up resistor of different resistances can influence the value of output high potential.Because when output transistor ended, its collector voltage depended on the value of pull-up resistor and load basically.In addition, the output of each comparator use that allows to link together.
LM339 is a kind of high-gain broadband device, when printed circuit board layout, should note input signal cable and output line beyond this point, causes the comparator self-excitation in order to avoid the output signal is coupled to input through distribution capacity.And should note integrated package earth terminal should with the earth point of complete machine as much as possible near, to reduce impedance ground.
The drive current of LM339 depends on its biasing circuit, and irrelevant with operating current.
Fig. 5 has introduced the two BCD up counters of a kind of CD4518.Be made up of two identical synchronous 4 grades of counters, counter stage is a d type flip flop, has inner commutative CP and EN line; Be used for adding counting at rising edge clock or trailing edge, in the individual unit computing, the EN input keeps high level; And in CP rising edge carry, the CR line is the zero clearing of high level hour counter.
But counter can be realized cascade in the pulsation mode cascade through the EN input that Q3 is connected to next counter, and the latter's CP input simultaneously keeps low level.Among the figure:
Be defeated by then rolling counters forward of counter chip CD4518 when the signal system that first place obtains as clock pulses, four in counter is output as 0001.The signal that second place obtains is defeated by counter as reset signal, and then counter O reset of signal is arranged, and four are output as 0000.If there is not signal, broadcast leakage had both appearred, and when second clock pulses arrived, counter bit was output as 0010, after we amplify " 1 " signal process wherein; Export to display circuit.
The main devices of display circuit is IGCT, loudspeaker, capacitor etc.Its effect is to send out information processed through loudspeaker or light source.The loudspeaker is here seen the employing buzzer, light source can adopt light emitting diode with, send sounding and lighting alarm and show.Owing to belong to routine techniques, so do not give unnecessary details.
The course of work of said apparatus is: utilize photodiode to obtain signal at seeding unit two places, the signal that first place obtains is defeated by counter chip CD4518 as clock pulses, if then rolling counters forward of signal is arranged, four in counter is output as 0001.The signal that second place obtains is defeated by counter as reset signal, and then counter O reset of signal is arranged, and four are output as 0000. if there is not signal; Broadcast leakage had both appearred; When second clock pulses arrived, counter bit was output as 0010, after we amplify " 1 " signal process wherein; Export to light emitting diode and buzzer, send sounding and lighting alarm and show.
In the sowing process, it is very little to the work quality influence to broadcast one or two kind period of the day from 11 p.m. to 1 a.m sometimes less, but can not broadcast leakage too many, therefore requires three kind period of the day from 11 p.m. to 1 a.m of discontinuous broadcast leakage.Fundamental diagram is seen last page.Operation principle is: utilize photodiode to obtain signal in the seeding unit both sides; When place's number of winning the confidence for the first time, counter CD4518 is given in the kind pulse when being imported by the LM339 signal, and this hour counter is output as 0001; Second place obtains signal, and do not have the pulse count signal device this moment also is 0000.When second of broadcast leakage, clock pulse signal arrives, and there is pulse at first place, counter output 0010, and at this moment, second place does not also obtain signal, and counter also is 0010.When the 3rd broadcast leakage, first place obtains the clock signal, and rolling counters forward is 0011, and at this moment, second place does not also get access to pulse signal, and counter also is 0011.When obtaining signal the 4th time, the pulse signal that counter obtains, this moment, counting was 0100, sent warning immediately, manual work takes appropriate measures.
Claims (8)
1. intelligent monitoring driven sucking precise seeder; Comprise seed-box (1), vacuum chamber (4) and sucker (2); Vacuum chamber (4) communicates with the induced duct (5) of blower fan, and sucker (2) has a plurality of suctions hole (3) on every side, it is characterized in that: on said seeding unit, be provided with signal picker, signal processor and display; When broadcast leakage occurring, signal picker is sent to signal processor processes after display sends alarm signal with the signal of gathering.
2. intelligent monitoring driven sucking precise seeder according to claim 1 is characterized in that: said signal picker is provided in a side of the photodiode of sucker (2) both sides.
3. intelligent monitoring driven sucking precise seeder according to claim 1 is characterized in that: said signal processor is the two BCD plus coujnt chips of LM339 integrated circuit and CD4518.
4. intelligent monitoring driven sucking precise seeder according to claim 1 is characterized in that: said display is an acousto-optic warning circuit.
5. intelligent monitoring driven sucking precise seeder according to claim 2; It is characterized in that: said photodiode has two groups; A group photodiode (7) is located at the below of vacuum chamber (4), is made up of a transmitting tube and a receiving tube, is contained in the both sides of sucker (2) respectively; B group photodiode (8) is contained in the both sides of sucker (2) below seed (9) descent path, and five transmitting tubes and five receiving tubes are arranged respectively.
6. intelligent monitoring driven sucking precise seeder according to claim 2 is characterized in that: the two BCD plus coujnt chips of said photodiode and signal processor LM339 integrated circuit and CD4518 interrelate.
7. intelligent monitoring driven sucking precise seeder according to claim 3 is characterized in that: two BCD plus coujnt chips of said signal processor LM339 integrated circuit and CD4518 and acousto-optic warning circuit interrelate.
8. intelligent monitoring driven sucking precise seeder according to claim 4 is characterized in that: said acousto-optic warning circuit is to be made up of light emitting diode and buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203960531U CN202232096U (en) | 2011-10-14 | 2011-10-14 | Intelligent monitoring air-aspiration type precise metering seed sowing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203960531U CN202232096U (en) | 2011-10-14 | 2011-10-14 | Intelligent monitoring air-aspiration type precise metering seed sowing device |
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| CN202232096U true CN202232096U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203960531U Expired - Fee Related CN202232096U (en) | 2011-10-14 | 2011-10-14 | Intelligent monitoring air-aspiration type precise metering seed sowing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105740943A (en) * | 2016-04-28 | 2016-07-06 | 中国农业科学院兰州畜牧与兽药研究所 | Device and method for performing vacuum absorbing and counting on plant seeds |
| CN106886055A (en) * | 2017-02-27 | 2017-06-23 | 吉林大学 | A kind of air-suction seeding unit inhales kind of condition monitoring system and a broadcast leakage monitoring method |
-
2011
- 2011-10-14 CN CN2011203960531U patent/CN202232096U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105740943A (en) * | 2016-04-28 | 2016-07-06 | 中国农业科学院兰州畜牧与兽药研究所 | Device and method for performing vacuum absorbing and counting on plant seeds |
| CN106886055A (en) * | 2017-02-27 | 2017-06-23 | 吉林大学 | A kind of air-suction seeding unit inhales kind of condition monitoring system and a broadcast leakage monitoring method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20121014 |