CN105325102A - Film laying seeder and duckbill-type seed sowing device miss-seeding inspection method and apparatus - Google Patents
Film laying seeder and duckbill-type seed sowing device miss-seeding inspection method and apparatus Download PDFInfo
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- CN105325102A CN105325102A CN201410345065.XA CN201410345065A CN105325102A CN 105325102 A CN105325102 A CN 105325102A CN 201410345065 A CN201410345065 A CN 201410345065A CN 105325102 A CN105325102 A CN 105325102A
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Abstract
The invention provides a film laying seeder and duckbill-type seed sowing device miss-seeding inspection method and apparatus. The film laying seeder comprises a frame, and a seed sowing device component and a duckbill-type seed sowing device miss-seeding inspection apparatus, which are mounted on the frame. The duckbill-type seed sowing device miss-seeding inspection apparatus conducts real-time monitoring and alarm on duckbill-type seed sowing device miss-seeding, and includes a speed sensor for detecting and acquiring walking speed of the film laying seeder, a pressure sensor for detecting seed falling impact signal in the duckbill-type seed sowing device, a data acquisition module connected with the pressure sensor and used for collecting and converting seed falling impact signal to a pulse square signal, a wireless transmitting module connected with the data acquisition module, a data processing module respectively connected with the wireless transmitting module and the speed sensor, and used for receiving walking speed and pulse square signal and calculating the miss-seeding quantity, and a display module connected with the data processing module. The invention also discloses a duckbill-type seed sowing device miss-seeding inspection method and a film laying seeder using the method.
Description
Technical field
The present invention relates to a kind of mulch film spreading and seeding machine and on-line monitoring technique thereof, particularly a kind of mulch film spreading and seeding machine and duck-beak type seeding unit broadcast leakage inspection method thereof and device.
Background technology
The critical piece of current sower---seeding unit is totally enclosed, can't see seeding process, therefore only its operation quality cannot directly be monitored with the audiovisual of people, if there is grain tube blocking and broadcast leakage when seeding operation, a line or number row can be caused normally to sow, cause " disconnected bar " broadcast leakage phenomenon, especially large molded breadth row precision seeder, its operating speed is high, sown scope is wide, then can cause large-area broadcast leakage as there is above-mentioned phenomenon, causes the significantly underproduction of agricultural.Therefore adopt electronic intelligence monitoring system to monitor the seeding unit situation of sowing, and send sounding and lighting alarm, driver location of fault is also got rid of in time, greatly can improve the quality of precise sowing.
Prior art is monitored for precision planter blocking and broadcast leakage and is focused mostly in photoelectric method, image method and capacitance method etc.Photoelectric method is installed on grain conductor by photoelectric sensor, when wheat seed passes through the seed channel of photoelectric sensor, and blocking light beam, make photoelectric tube send pulse signal, if can't accept photosignal, just think blocking, if photosignal grow, then think broadcast leakage.Because photoelectric tube is very easily subject to the pollution of field dust, therefore can the reliability measured be had an impact.Image method to be taken seed flow by CCD (charge-coupleddevice charge-coupled image sensor) video camera and Signal transmissions to calculator, calculator processes sample, progressively complete the processes such as image procossing, Characteristic Extraction, pattern-recognition, thus seeding quantity is monitored.This method have cost high, be subject to the impacts such as field road jolts, simultaneously camera lens is also easily covered by dust, affects certainty of measurement.Capacitance method is that capacitor plate is wrapped in discharging tube outer end, indirectly responds to the flow of seed by capacitive dielectric constant change in testing pipes, and then realizes broadcast leakage blocking warning.But mulch film spreading and seeding machine duck-beak type seeding unit scratches mulch film by duckbilled, insert in soil and realize sowing, the space of capacitance type sensor pole plate is not installed.
How effectively to carry out Real-Time Monitoring and warning to the duck-beak type seeding unit broadcast leakage of mulch film spreading and seeding machine, be problem demanding prompt solution in mulch film spreading and seeding machine monitoring.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of mulch film spreading and seeding machine and duck-beak type seeding unit broadcast leakage inspection method thereof and device, to realize Real-Time Monitoring and the warning of mulch film spreading and seeding machine broadcast leakage, thus provides favourable support for the optimization sowing of mulch film spreading and seeding machine.
To achieve these goals, the invention provides a kind of duck-beak type seeding unit broadcast leakage testing fixture of mulch film spreading and seeding machine, be arranged on mulch film spreading and seeding machine, for carrying out Real-Time Monitoring and warning to the duck-beak type seeding unit broadcast leakage of described mulch film spreading and seeding machine, wherein, described duck-beak type seeding unit broadcast leakage testing fixture comprises:
Vehicle speed sensor, is arranged on described mulch film spreading and seeding machine, for detecting and gathering the speed of travel of described mulch film spreading and seeding machine;
Pressure sensor, is arranged on described duck-beak type seeding unit, for detecting the seeds fall impact signal in described duck-beak type seeding unit;
Data acquisition module, is arranged on described duck-beak type seeding unit, and is connected with described pressure sensor, for gathering the seeds fall impact signal that described pressure sensor detects, and described seeds fall impact signal is converted to pulse square wave signal;
Wireless transmitter module, is arranged on described duck-beak type seeding unit, and is connected with described data acquisition module, for sending described pulse square wave signal;
Data processing module, is arranged on described mulch film spreading and seeding machine, and is connected with described wireless transmitter module and described vehicle speed sensor respectively, for receiving the described speed of travel and described pulse square wave signal and calculating seed broadcast leakage amount;
Display module, is arranged on described mulch film spreading and seeding machine, and is connected with described data processing module, shows described seed broadcast leakage amount in real time according to the result of calculation of described data processing module.
Above-mentioned duck-beak type seeding unit broadcast leakage testing fixture, wherein, described data acquisition module comprises:
Charge voltage converting unit, for being converted to pulse voltage signal by described seeds fall impact signal;
Voltage comparison unit, for being converted to pulse square wave signal by described pulse voltage signal;
Frequency senser, for measuring the real-time fall time interval of the time interval as adjacent two seeds of adjacent two described pulse square wave signal rising edges, and by described wireless transmitter module, described real-time fall time interval is sent to described data processing module.
Above-mentioned duck-beak type seeding unit broadcast leakage testing fixture, wherein, described duck-beak type seeding unit comprises seeder unit shell, seeds sucker and prevents blocking up, the described anti-seeding passage side being arranged on described duck-beak type seeding unit of blocking up also is arranged corresponding to the suction hole of described seeds sucker, described seeding passage is blocked in the course of the work for preventing kind of grain, described anti-block up on be provided with anti-blocking velar plate, described anti-blocking velar plate is fixed on described seeder unit shell, and described pressure sensor is arranged on the side relative to described suction hole on described anti-blocking velar plate.
Above-mentioned duck-beak type seeding unit broadcast leakage testing fixture, wherein, the two ends of described pressure sensor are provided with and conveniently coordinate step surface with described anti-blocking lid location and installation.
Above-mentioned duck-beak type seeding unit broadcast leakage testing fixture, wherein, described pressure sensor is PVDF piezoelectric transducer.
Above-mentioned duck-beak type seeding unit broadcast leakage testing fixture, wherein, described PVDF piezoelectric transducer comprises aluminum alloy substrate and laminating rubber damping layer, a PET protective layer, PVDF piezoelectric sensing layer and the 2nd PET protective layer in described aluminum alloy substrate successively.
Above-mentioned duck-beak type seeding unit broadcast leakage testing fixture, wherein, also comprises:
Alarm module, is connected with described data processing module or display module, for carrying out broadcast leakage warning according to described seed broadcast leakage amount.
In order to realize above-mentioned purpose better, present invention also offers a kind of mulch film spreading and seeding machine, comprise frame and be arranged on overlay film parts, kind case, seeding unit parts and the suppression parts in described frame from front to back successively, wherein, also comprise duck-beak type seeding unit broadcast leakage testing fixture, described duck-beak type seeding unit broadcast leakage testing fixture is above-mentioned duck-beak type seeding unit broadcast leakage testing fixture.
In order to realize above-mentioned purpose better, present invention also offers a kind of duck-beak type seeding unit broadcast leakage inspection method of mulch film spreading and seeding machine, for carrying out Real-Time Monitoring and warning to the duck-beak type seeding unit broadcast leakage of described mulch film spreading and seeding machine, wherein, comprising the steps:
S100, speed data collection, use vehicle speed sensor detect and gather the speed of travel of described mulch film spreading and seeding machine;
S200, seeds fall impact signal gather, and use pressure sensor detects the seeds fall impact signal in described duck-beak type seeding unit;
S300, data acquisition and transmission, gather the seeds fall impact signal that described pressure sensor detects, and after described seeds fall impact signal is converted to pulse square wave signal, send described pulse square wave signal, to obtain the real-time seeds fall time interval;
S400, data processing, calculate seed broadcast leakage amount according to the described speed of travel received and described pulse square wave signal;
S500, display, show described seed broadcast leakage amount in real time according to the result of calculation of described data processing.
Above-mentioned duck-beak type seeding unit broadcast leakage inspection method, wherein, described data processing step S400 comprises further:
S401, the speed of travel according to described mulch film spreading and seeding machine, obtain the seed plate rotational angular velocity of described duck-beak type seeding unit:
wherein, V is the facility speed of travel, and R is seed plate radius, and k is proportionality coefficient;
S402, according to the structure of described seed plate and movement velocity, the theory obtaining adjacent two seeds falls interval time:
wherein Δ t is the theory whereabouts interval time of adjacent two seeds, and n is the nibs number of seed plate, and ω is the angular speed of seed plate motion;
S403, by the described seed plate rotational angular velocity in step S401, the theory substituted in step S402 falls to obtaining interval time:
S404, more described real-time fall time interval and described theory fall interval time, when meeting broadcast leakage decision condition, are then judged as broadcast leakage.
Above-mentioned duck-beak type seeding unit broadcast leakage inspection method, wherein, described data acquisition and forwarding step S300 comprise further:
S301, described seeds fall impact signal is converted to pulse voltage signal;
S302, described pulse voltage signal is converted to pulse square wave signal;
S303, measure the real-time fall time interval of the time interval as adjacent two seeds of adjacent two described pulse square wave signal rising edges;
S304, send described real-time fall time interval.
In order to realize above-mentioned purpose better, present invention also offers a kind of mulch film spreading and seeding machine using above-mentioned duck-beak type seeding unit broadcast leakage inspection method.
Technique effect of the present invention is:
The duck-beak type seeding unit broadcast leakage that the present invention is directed to mulch film spreading and seeding machine is measured, a kind of broadcast leakage On-line Measuring Method based on piezoelectric transducer is proposed, its seed measuring transducer is PVDF (polyvinylidene fluoride) piezoelectric transducer, being installed on duck-beak type seeding unit seed discharges in cavity floor, when seed falls to sensor surface, impulsive force is produced to sensor, by Signal reception and process, obtain the frequency of seeds fall, in conjunction with the sower speed of travel, realize the real-time testing and alarm of broadcast leakage.Can effectively detect seed broadcast leakage, for the optimization sowing of mulch film spreading and seeding machine provides favourable support.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of the mulch film spreading and seeding machine of one embodiment of the invention;
Fig. 2 is the duck-beak type seeding unit broadcast leakage testing fixture structured flowchart of one embodiment of the invention;
Fig. 3 is the duck-beak type seeding unit broadcast leakage testing fixture scheme of installation of one embodiment of the invention;
Fig. 4 is the anti-blocking velar plate structural representation of the duck-beak type seeding unit of one embodiment of the invention;
Fig. 5 is the piezoelectric transducer shape assumption diagram of one embodiment of the invention;
Fig. 6 is the piezoelectric transducer of one embodiment of the invention and the installation diagram of anti-blocking lid;
Fig. 7 is the piezoelectric sensor structure figure of one embodiment of the invention;
Fig. 8 is the duck-beak type seeding unit broadcast leakage inspection method flow chart of one embodiment of the invention.
Wherein, Reference numeral
1 frame
2 overlay film parts
21 overlay film frames
22 put film roller
23 overlay film rollers
3 kinds of casees
4 seeding unit parts
41 seeding unit supports
42 duck-beak type seeding units
421 seeder unit shells
422 seeds suckers
423 duckbilleds
424 suction holes
425 anti-blocking velar plates
4251 positioning boss
4252 coordinate shoulder
4253 installing holes
4254 routing holes
426 lead kind of a block
43 discharging tubes
5 suppression parts
51 pack roller supports
52 pack rollers
6 duck-beak type seeding unit broadcast leakage testing fixtures
61 vehicle speed sensor
62 pressure sensors
621 coordinate step surface
622 aluminum alloy substrate
623 rubber damping layers
624 the one PET protective layers
625PVDF piezoelectric sensing layer
626 the 2nd PET protective layers
63 data acquisition modules
64 wireless transmitter modules
65 data processing modules
66 display modules
7 seeds
S100-S500 step
Embodiment
Below in conjunction with accompanying drawing, structural principle of the present invention and operation principle are described in detail:
It is the structural representation of the mulch film spreading and seeding machine of one embodiment of the invention see Fig. 1, Fig. 1.Mulch film spreading and seeding machine of the present invention, comprises frame 1 and is arranged on overlay film parts 2, kind case 3, seeding unit parts 4 and the suppression parts 5 in described frame 1 from front to back successively, also comprise duck-beak type seeding unit broadcast leakage testing fixture 6.Its mid frame 1 is furnished with trifilar suspension structure, for connecting tractor; Overlay film parts 2 mainly comprise overlay film frame 21, put film roller 22 and overlay film roller 23, put in U-shaped draw-in groove that film roller 22 is arranged in frame 1, can tie by quick-replaceable film easily, overlay film roller 23 is arranged in frame 1 by overlay film frame 21, overlay film frame 21 drives overlay film roller 23 freely to rotate, can profiling overlay film everywhere; Planting case 3 is fixed in frame 1, plants grain and enters duck-beak type seeding unit 42 by each discharging tube 43; The seeding monomer of seeding unit parts 4 is connected with frame 1 all independently, each seeding monomer forms by duck-beak type seeding unit 42 and seeding unit support 41, seeding unit support 41 drives duck-beak type seeding unit 42 freely to rotate, and each seeding monomer all can be sowed independently in profiling everywhere; Suppression parts 5 mainly comprise pack roller support 51 and pack roller 52, and pack roller 52 is arranged in frame 1 by pack roller support 51, and pack roller support 51 drives pack roller 52 freely to rotate, and effectively can prevent the thin film damage in suppression process.Tractor is connected by three point linkage and drags mulch film spreading and seeding machine walks in field, and first overlay film parts 2 complete plastic film mulch operation; Duck-beak type seeding unit 42 penetrates the mulch film completed, and sows under film; Follow-up through suppression parts 5 suppress operation.Because the structure of these other parts of mulch film spreading and seeding machine, function, mutual alignment and annexation etc. are more ripe prior art, and therefore not to repeat here, is only described in detail duck-beak type seeding unit broadcast leakage testing fixture 6 of the present invention below.
See the duck-beak type seeding unit broadcast leakage testing fixture structured flowchart that Fig. 2, Fig. 2 are one embodiment of the invention.The duck-beak type seeding unit broadcast leakage testing fixture 6 of mulch film spreading and seeding machine of the present invention, is arranged on mulch film spreading and seeding machine, and for carrying out Real-Time Monitoring and warning to the duck-beak type seeding unit broadcast leakage of described mulch film spreading and seeding machine, described duck-beak type seeding unit broadcast leakage testing fixture 6 comprises:
Vehicle speed sensor 61, is arranged on described mulch film spreading and seeding machine, for detecting and gathering the speed of travel of described mulch film spreading and seeding machine; Pressure sensor 62, is arranged on described duck-beak type seeding unit 42, for detecting the seed 7 falling impacts signal in described duck-beak type seeding unit; Data acquisition module 63, be arranged on described duck-beak type seeding unit 42, and be connected with described pressure sensor 62, for gathering the seeds fall impact signal that described pressure sensor 62 detects, and described seed 7 falling impacts signal is converted to pulse square wave signal; Wireless transmitter module 64, is arranged on described duck-beak type seeding unit 42, and is connected with described data acquisition module 63, for sending described pulse square wave signal; Data processing module 65, is arranged on described mulch film spreading and seeding machine, and is connected with described wireless transmitter module 64 and described vehicle speed sensor 61 respectively, for receiving the described speed of travel and described pulse square wave signal and calculating seed broadcast leakage amount; Display module 66, is arranged on described mulch film spreading and seeding machine, and is connected with described data processing module 65, shows described seed broadcast leakage amount in real time according to the result of calculation of described data processing module 65.
In addition, the present invention also can comprise:
Alarm module, is connected with described data processing module 65 or display module 66, for carrying out broadcast leakage warning according to described seed broadcast leakage amount.
In the present embodiment, described data acquisition module 63 comprises:
Charge voltage converting unit, for being converted to pulse voltage signal by described seed 7 falling impacts signal; Voltage comparison unit, for being converted to pulse square wave signal by described pulse voltage signal; Frequency senser, for measuring the real-time fall time interval of the time interval as adjacent two seeds 7 of adjacent two described pulse square wave signal rising edges, and by described wireless transmitter module 64, described real-time fall time interval is sent to described data processing module 65.
During work, after seed 7 falls, impact PVDF piezoelectric sensor surface, sensor generation deformation, and produce electric charge induction signal; Utilize the charge conversion amplifying circuit of charge voltage converting unit, seed 7 impact signal is converted to pulse voltage signal, by voltage comparison unit, pulse voltage signal is converted to pulse square wave signal, frequency senser is utilized to measure the time interval of adjacent two pulse square wave signal rising edges, this time interval can characterize fall time difference and the real-time fall time interval of seed of adjacent two seed 7 seeds, and this real-time fall time interval is sent to data processing module 65 by wireless transmitter module 64 by data acquisition module 63.
See duck-beak type seeding unit broadcast leakage testing fixture 6 scheme of installation that Fig. 3, Fig. 3 are one embodiment of the invention.Described duck-beak type seeding unit comprises seeder unit shell 421, seeds sucker 422, lead kind of block 426, duckbilled is blocked up with anti-, the described anti-seeding passage side being arranged on described duck-beak type seeding unit of blocking up also is arranged corresponding to the suction hole 424 of described seeds sucker 422, described seeding passage is blocked in the course of the work for preventing kind of grain, described anti-block up on be provided with anti-blocking velar plate 425 (see Fig. 4), described anti-blocking velar plate 425 is fixed on described seeder unit shell 421, locate on seeder unit shell 421 by positioning boss 4251 and cooperation shoulder 4252, screw is used to be fixed on seeder unit shell 421 in installing hole 4253 position, the signal that routing hole 4254 is used for drawing pressure sensor 62 transmits wire.Described pressure sensor 62 is arranged on the side relative to described suction hole 424 on described anti-blocking velar plate 425.
See the piezoelectric transducer shape assumption diagram that Fig. 5 and Fig. 6, Fig. 5 are one embodiment of the invention, Fig. 6 is the piezoelectric transducer of one embodiment of the invention and the installation diagram of anti-blocking lid.The two ends of described pressure sensor 62 are provided with and conveniently coordinate step surface 621 with described anti-blocking velar plate 425 location and installation, can be fixed on easily and reliably between anti-blocking velar plate 425 and seeder unit shell 421.In the present embodiment, described pressure sensor 62 is preferably PVDF piezoelectric transducer.See the piezoelectric sensor structure figure that Fig. 7, Fig. 7 are one embodiment of the invention.Described PVDF piezoelectric transducer comprises aluminum alloy substrate 622 and laminating rubber damping layer 623, a PET protective layer 624, PVDF piezoelectric sensing layer 625 and the 2nd PET protective layer 626 in described aluminum alloy substrate 622 successively.
During farm work, in mulch film spreading and seeding machine walking process, the duckbilled 423 of duck-beak type chimes device 42 penetrates the mulch film completed, and sows under film.The rotation direction of duck-beak type seeding unit 42 is by being indicated in Fig. 3, and seeds sucker 422 is under negative-pressure sucking effect, and each suction hole 424 all adsorbs a seed 7; When seeds sucker 422 turns to A position, under the effect of associated mechanisms, the suction-operated that the kind grain fallen from pneumatic type seeds sucker 422 loses seeds sucker 422 departs from seeds sucker 422, and drop on the shell fragment of pressure sensor 62 under the guide effect leading kind of block 426, surge signal is converted to the signal of telecommunication by pressure sensor 62, and send a signal to data acquisition module 63, plant grain and finally fall in the internal cavities of duckbilled 423; Suction hole 424 forwards to the process of B position from A position, again adsorbs a seed 7; The film that duckbilled 423 penetrated surface moving to bottom covers, under associated mechanisms effect, the oral area of duckbilled 423 opens, and sows under the seed 7 be in the cavity of duckbilled 423 has fallen film.The signal of telecommunication that pressure sensor 62 in the cavity of each duckbilled 423 produces is pooled to data acquisition module 63 through signal circuit, the signal of telecommunication is sent through wireless transmitter module 64 afterwards, the data processing module 65 matched with it receives the signal of telecommunication and to go forward side by side row relax, shows seed 7 broadcast leakage information in terminal demonstration module 66.
See the duck-beak type seeding unit broadcast leakage inspection method flow chart that Fig. 8, Fig. 8 are one embodiment of the invention.The duck-beak type seeding unit broadcast leakage inspection method of mulch film spreading and seeding machine of the present invention, for carrying out Real-Time Monitoring and warning to the duck-beak type seeding unit broadcast leakage of described mulch film spreading and seeding machine, comprises the steps:
Step S100, speed data collection, use vehicle speed sensor 61 detect and gather the speed of travel of described mulch film spreading and seeding machine;
Step S200, seeds fall impact signal gather, and use pressure sensor 62 detects the seeds fall impact signal in described duck-beak type seeding unit;
Step S300, data acquisition and transmission, gather the seeds fall impact signal that described pressure sensor 62 detects, and after described seeds fall impact signal is converted to pulse square wave signal, send described pulse square wave signal, to obtain the real-time seeds fall time interval;
Described data acquisition and forwarding step S300 comprise further:
Step S301, described seeds fall impact signal is converted to pulse voltage signal;
Step S302, described pulse voltage signal is converted to pulse square wave signal;
Step S303, measure the real-time fall time interval of the time interval as adjacent two seeds of adjacent two described pulse square wave signal rising edges;
Step S304, send described real-time fall time interval.
Step S400, data processing, calculate seed broadcast leakage amount according to the described speed of travel received and described pulse square wave signal;
Described data processing step S400 comprises further:
Step S401, the speed of travel according to described mulch film spreading and seeding machine, obtain the seed plate rotational angular velocity of described duck-beak type seeding unit:
wherein, V is the facility speed of travel, and R is seed plate radius, and k is proportionality coefficient;
Step S402, according to the structure of described seed plate and movement velocity, the theory obtaining adjacent two seeds 7 falls interval time:
wherein Δ t is the theory whereabouts interval time of adjacent two seeds 7, and n is the nibs number of seed plate, and ω is the angular speed of seed plate motion;
Step S403, by the described seed plate rotational angular velocity in step S401, the theory substituted in step S402 falls to obtaining interval time:
Step S404, more described real-time fall time interval and described theory fall interval time, when meeting broadcast leakage decision condition, are then judged as broadcast leakage.In the present embodiment, impact PVDF piezoelectric sensor surface after seed 7 falls and produce electric charge induction signal, utilize the charge conversion amplifying circuit of charge voltage converting unit, seed impact signal is converted to pulse voltage signal, by voltage comparison unit, this pulse voltage signal is converted to pulse square wave signal, frequency senser is utilized to measure the time interval of adjacent two pulse square wave signal rising edges, this time interval can characterize fall time difference and the real-time fall time interval of seed of adjacent two seed kernels, this real-time fall time interval is sent to data processing module 65 by wireless transmitter module 64 by data acquisition module 63, for and the theoretical fall time interval that calculates of data processing module 65 compare, when adjacent seed real-time fall time interval and theoretical fall time interval meet following broadcast leakage decision condition, namely broadcast leakage is considered as: t
measure>1.5* Δ t, data processing module 65, according to this broadcast leakage decision condition, is added up broadcast leakage amount, and is shown in terminal demonstration module 66, also can determine whether reported to the police according to statistical conditions.
Step S500, display, show described seed broadcast leakage amount in real time according to the result of calculation of described data processing.
Certainly, the present invention can also arrange alarming step as required, for carrying out broadcast leakage warning according to described seed broadcast leakage amount.
The present invention also provides a kind of mulch film spreading and seeding machine adopting above-mentioned duck-beak type seeding unit broadcast leakage inspection method.Such as PVDF piezoelectric transducer can be installed on duck-beak type seeding unit seeding outlet cavity bottom surface by this mulch film spreading and seeding machine; PVDF piezoelectric transducer can change seed impulsive force into voltage pulse signal, is extracted and processes seed impact the voltage signal produced by signal acquisition circuit; Meanwhile, the speed of travel of mulch film spreading and seeding machine is obtained by vehicle speed sensor 61; Data processing and display terminal receive the speed of a motor vehicle and seeds fall frequency by serial line interface, calculate seed broadcast leakage situation, and display in real time and warning.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the present invention.
Claims (12)
1. the duck-beak type seeding unit broadcast leakage testing fixture of a mulch film spreading and seeding machine, be arranged on mulch film spreading and seeding machine, for carrying out Real-Time Monitoring and warning to the duck-beak type seeding unit broadcast leakage of described mulch film spreading and seeding machine, it is characterized in that, described duck-beak type seeding unit broadcast leakage testing fixture comprises:
Vehicle speed sensor, is arranged on described mulch film spreading and seeding machine, for detecting and gathering the speed of travel of described mulch film spreading and seeding machine;
Pressure sensor, is arranged on described duck-beak type seeding unit, for detecting the seeds fall impact signal in described duck-beak type seeding unit;
Data acquisition module, is arranged on described duck-beak type seeding unit, and is connected with described pressure sensor, for gathering the seeds fall impact signal that described pressure sensor detects, and described seeds fall impact signal is converted to pulse square wave signal;
Wireless transmitter module, is arranged on described duck-beak type seeding unit, and is connected with described data acquisition module, for sending described pulse square wave signal;
Data processing module, is arranged on described mulch film spreading and seeding machine, and is connected with described wireless transmitter module and described vehicle speed sensor respectively, for receiving the described speed of travel and described pulse square wave signal and calculating seed broadcast leakage amount;
Display module, is arranged on described mulch film spreading and seeding machine, and is connected with described data processing module, shows described seed broadcast leakage amount in real time according to the result of calculation of described data processing module.
2. duck-beak type seeding unit broadcast leakage testing fixture as claimed in claim 1, it is characterized in that, described data acquisition module comprises:
Charge voltage converting unit, for being converted to pulse voltage signal by described seeds fall impact signal;
Voltage comparison unit, for being converted to pulse square wave signal by described pulse voltage signal;
Frequency senser, for measuring the real-time fall time interval of the time interval as adjacent two seeds of adjacent two described pulse square wave signal rising edges, and by described wireless transmitter module, described real-time fall time interval is sent to described data processing module.
3. duck-beak type seeding unit broadcast leakage testing fixture as claimed in claim 1 or 2, it is characterized in that, described duck-beak type seeding unit comprises seeder unit shell, seeds sucker is blocked up with anti-, the described anti-seeding passage side being arranged on described duck-beak type seeding unit of blocking up also is arranged corresponding to the suction hole of described seeds sucker, described seeding passage is blocked in the course of the work for preventing kind of grain, described anti-block up on be provided with anti-blocking velar plate, described anti-blocking velar plate is fixed on described seeder unit shell, described pressure sensor is arranged on the side relative to described suction hole on described anti-blocking velar plate.
4. duck-beak type seeding unit broadcast leakage testing fixture as claimed in claim 3, is characterized in that, the two ends of described pressure sensor are provided with and conveniently coordinate step surface with described anti-blocking lid location and installation.
5. duck-beak type seeding unit broadcast leakage testing fixture as claimed in claim 3, it is characterized in that, described pressure sensor is PVDF piezoelectric transducer.
6. duck-beak type seeding unit broadcast leakage testing fixture as claimed in claim 5; it is characterized in that, described PVDF piezoelectric transducer comprises aluminum alloy substrate and laminating rubber damping layer, a PET protective layer, PVDF piezoelectric sensing layer and the 2nd PET protective layer in described aluminum alloy substrate successively.
7. the duck-beak type seeding unit broadcast leakage testing fixture as described in claim 1,2,4,5 or 6, is characterized in that, also comprise:
Alarm module, is connected with described data processing module or display module, for carrying out broadcast leakage warning according to described seed broadcast leakage amount.
8. a mulch film spreading and seeding machine, comprise frame and be arranged on overlay film parts, kind case, seeding unit parts and the suppression parts in described frame from front to back successively, it is characterized in that, also comprise duck-beak type seeding unit broadcast leakage testing fixture, described duck-beak type seeding unit broadcast leakage testing fixture is the duck-beak type seeding unit broadcast leakage testing fixture in the claims 1-7 described in any one.
9. a duck-beak type seeding unit broadcast leakage inspection method for mulch film spreading and seeding machine, for carrying out Real-Time Monitoring and warning to the duck-beak type seeding unit broadcast leakage of described mulch film spreading and seeding machine, is characterized in that, comprise the steps:
S100, speed data collection, use vehicle speed sensor detect and gather the speed of travel of described mulch film spreading and seeding machine;
S200, seeds fall impact signal gather, and use pressure sensor detects the seeds fall impact signal in described duck-beak type seeding unit;
S300, data acquisition and transmission, gather the seeds fall impact signal that described pressure sensor detects, and after described seeds fall impact signal is converted to pulse square wave signal, send described pulse square wave signal, to obtain the real-time seeds fall time interval;
S400, data processing, calculate seed broadcast leakage amount according to the described speed of travel received and described pulse square wave signal;
S500, display, show described seed broadcast leakage amount in real time according to the result of calculation of described data processing.
10. duck-beak type seeding unit broadcast leakage inspection method as claimed in claim 9, it is characterized in that, described data processing step S400 comprises further:
S401, the speed of travel according to described mulch film spreading and seeding machine, obtain the seed plate rotational angular velocity of described duck-beak type seeding unit:
wherein, V is the facility speed of travel, and R is seed plate radius, and k is proportionality coefficient;
S402, according to the structure of described seed plate and movement velocity, the theory obtaining adjacent two seeds falls interval time:
wherein Δ t is the theory whereabouts interval time of adjacent two seeds, and n is the nibs number of seed plate, and ω is the angular speed of seed plate motion;
S403, by the described seed plate rotational angular velocity in step S401, the theory substituted in step S402 falls to obtaining interval time:
S404, more described real-time fall time interval and described theory fall interval time, when meeting broadcast leakage decision condition, are then judged as broadcast leakage.
11. duck-beak type seeding unit broadcast leakage inspection methods as claimed in claim 10, it is characterized in that, described data acquisition and forwarding step S300 comprise further:
S301, described seeds fall impact signal is converted to pulse voltage signal;
S302, described pulse voltage signal is converted to pulse square wave signal;
S303, measure the real-time fall time interval of the time interval as adjacent two seeds of adjacent two described pulse square wave signal rising edges;
S304, send described real-time fall time interval.
12. 1 kinds of mulch film spreading and seeding machines using any one duck-beak type seeding unit broadcast leakage inspection method in the claims 9-11.
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| CN106124239A (en) * | 2016-08-31 | 2016-11-16 | 中国农业大学 | Semen Maydis finger-clipping type seed metering device planting quality monitor station and planting quality detection method |
| CN107836165A (en) * | 2017-12-12 | 2018-03-27 | 河南科技大学 | A kind of broadcast leakage detection seeder and its detection method based on fluorescence principle |
| CN110132625A (en) * | 2019-05-15 | 2019-08-16 | 中国农业机械化科学研究院 | A kind of seeding quality detection method and device of duckbilled drum-type seeder |
| CN110196087A (en) * | 2019-05-28 | 2019-09-03 | 中国农业机械化科学研究院 | A kind of Pneumatic conveying type wheat seeder flow detection warning device and method |
| CN114812670A (en) * | 2022-03-29 | 2022-07-29 | 中国农业机械化科学研究院集团有限公司 | Film-laying seeder and time-space operation parameter omnibearing detection method and system thereof |
| CN115979473A (en) * | 2023-03-17 | 2023-04-18 | 吉林大学 | Seeding detecting system based on bionic mechanical sensor |
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| CN106124239A (en) * | 2016-08-31 | 2016-11-16 | 中国农业大学 | Semen Maydis finger-clipping type seed metering device planting quality monitor station and planting quality detection method |
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| CN110196087A (en) * | 2019-05-28 | 2019-09-03 | 中国农业机械化科学研究院 | A kind of Pneumatic conveying type wheat seeder flow detection warning device and method |
| CN114812670A (en) * | 2022-03-29 | 2022-07-29 | 中国农业机械化科学研究院集团有限公司 | Film-laying seeder and time-space operation parameter omnibearing detection method and system thereof |
| CN115979473A (en) * | 2023-03-17 | 2023-04-18 | 吉林大学 | Seeding detecting system based on bionic mechanical sensor |
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