CN206177379U - Two board difference formula cereal output metering device - Google Patents
Two board difference formula cereal output metering device Download PDFInfo
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- CN206177379U CN206177379U CN201621115320.2U CN201621115320U CN206177379U CN 206177379 U CN206177379 U CN 206177379U CN 201621115320 U CN201621115320 U CN 201621115320U CN 206177379 U CN206177379 U CN 206177379U
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Abstract
The utility model relates to a two board difference formula cereal output metering device, the device include the two board pressure sensor of cantilever beam type, data acquisition module and display terminal, and the two board pressure sensor of cantilever beam type include first atress board, second atress board and pressure sensor, data acquisition module for the vibration signal that obtains impact force that pressure sensor arrived and gather second atress board is with impact force and vibration signal transmission to display terminal, display terminal includes treater and display screen, and the treater is used for utilizing the vibration signal to vibrate the processing of making an uproar to the impact force to impact force after going to make an uproar according to the vibration calculates the cereal instant productivity, and shows the cereal instant productivity on the display screen. The utility model provides a metering device because the vibration signal that utilizes second atress board is to the impact force that detects processings of going to make an uproar, then utilizes the impact force that goes to make an uproar after handling to calculate the cereal instant productivity, has consequently improved the accuracy that cereal measured for prior art.
Description
Technical field
This utility model is related to agricultural technology field, more particularly, to a kind of pair of plate differential type grain yield metering device.
Background technology
Grain yield is measured in the research and practice of current precision agriculture, is a requisite important step, accurate
The grain yield information for really obtaining operating area is to evaluate the important indicator of grain yield and operation effectiveness, the space of production information
Variability is the scientific basis of the coming year accurate variable operation.
Current grain yield metering device can be caused due to the vibration of the harvester in operation process to the metering of yield
Interference, causes metric results precision low.
Utility model content
For disadvantages described above, this utility model provides a kind of pair of plate differential type grain yield metering device, can improve paddy
The degree of accuracy of thing metering.
Double plate differential type grain yield metering devices that this utility model is provided include：The double plate pressure sensings of beam type
Device, data acquisition module and display terminal, wherein：
The double plate pressure transducers of the beam type include the first stressed plate, the second stressed plate and pressure transducer, described
The double plate pressure transducers of beam type are adapted to mount between the tanker of corn mowing machine and elevator, and first stressed plate
Installation site be suitable to the corn in the elevator and collide with first stressed plate into before tanker, the pressure
Force transducer is used to detect the impulsive force that first stressed plate is received；The installation site of second stressed plate is suitable to described
Corn in elevator does not collide into before tanker with second stressed plate；
The data acquisition module, is connected with the double plate pressure transducers of the beam type, passes for obtaining the pressure
Impulsive force and the vibration signal of collection second stressed plate that sensor is detected；And by the impulsive force and the vibration signal
Send to display terminal；
The display terminal includes processor and display screen, and the processor is used for using the vibration signal to the punching
Hitting power carries out vibration denoising, and the corn instant productivity according to the impact force's calculation after vibration denoising, and by the paddy
Thing instant productivity is displayed on the display screen.
Optionally, described device also includes vehicle positioning module, for detecting harvester position and harvester gait of march；
Corresponding, the data acquisition module is additionally operable to obtain the harvester position that the vehicle positioning module detects and described
Harvester gait of march, and the harvester position and the harvester gait of march are sent to the display terminal, it is described
Processor in display terminal is additionally operable to include the harvester position and the harvester gait of march in the display screen
On.
Optionally, the data acquisition module includes：Signal acquisition circuit, analog to digital conversion circuit, clock-reset circuit and
Telecommunication circuit, wherein：
The signal acquisition circuit is used to gather the impulsive force and the vibration signal；
The clock-reset circuit, is connected with the signal acquisition circuit, for controlling the letter of the signal acquisition circuit
Number frequency acquisition；
Analog-digital conversion circuit as described, is connected with the signal acquisition circuit, for the impulsive force and vibration letter
Number it is digitized process；
The telecommunication circuit, is connected with analog-digital conversion circuit as described, for the impulsive force after by digitized processing and
The vibration signal is sent to the display terminal.
Optionally, described device also includes being connected to the double plate pressure transducers of the beam type and the data acquisition module
Signal conditioner between block, the signal conditioner is used to carry out signal condition to the impulsive force and the vibration signal.
Optionally, described device also includes moisture transducer, for gathering corn contained humidity；It is corresponding, the data
Acquisition module is used to gather the corn contained humidity, and the corn contained humidity is sent to the display terminal, described
The processor of display terminal is used to include the corn contained humidity in the display screen.
Optionally, described device also includes ceding of Taiwan height sensor, for detecting ceding of Taiwan height；It is corresponding, the data
Acquisition module is used to gather the ceding of Taiwan height, and the ceding of Taiwan is highly sent to the display terminal, the display terminal
Processor be used for the ceding of Taiwan is highly included in the display screen.
Optionally, described device also includes elevator velocity sensor, for detecting elevator rotating speed；It is corresponding, it is described
Data acquisition module is used to gather the elevator rotating speed, and the elevator rotating speed is sent to the display terminal, described
The processor of display terminal is used to include the elevator rotating speed in the display screen.
Double plate differential type grain yield metering devices that this utility model is provided, due to shaking first with the second stressed plate
Dynamic signal carries out denoising to the impulsive force for detecting, and then recycles the impact force's calculation corn after denoising instantaneously to produce
Amount, therefore improve the degree of accuracy of corn metering relative to prior art.The metering device that this utility model is provided can be notable
Eliminate the vibration effect of harvester, it is adaptable to different field conditions, it is ensured that the accuracy of detection of grain yield.This utility model is carried
For metering device be not only simple in structure, and it is stable, survey produce high precision, disclosure satisfy that agricultural survey produce needs, in agriculture
On industry harvesting machinery positive role will be played to the development of precision agriculture.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present disclosure or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Disclosed some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these figures.
Fig. 1 shows the structural representation of double plate differential type grain yield metering devices in the embodiment of this utility model one；
Fig. 2 shows the structural representation of the double plate pressure transducers of beam type in the embodiment of this utility model one；
Fig. 3 shows the frequency domain differential demodulation processing procedure schematic diagram of processor in the embodiment of this utility model one；
Fig. 4 shows the unlatching schematic flow sheet of display terminal in the embodiment of this utility model one；
The stressed plates of 1- first, the stressed plates of 2- second.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present disclosure, the technical scheme in the embodiment of the present disclosure is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than the embodiment of whole.
Based on the embodiment in the disclosure, it is all that those of ordinary skill in the art are obtained under the premise of creative work is not made
Other embodiment, belongs to the scope of disclosure protection.
This utility model provides a kind of pair of plate differential type grain yield metering device, and as illustrated in fig. 1 and 2, the device includes：
The double plate pressure transducers of beam type, data acquisition module and display terminal, wherein：
The double plate pressure transducers of the beam type include the first stressed plate 1, the second stressed plate 2 and pressure transducer, institute
State the double plate pressure transducers of beam type to be adapted to mount between the tanker of corn mowing machine and elevator, and first stress
The installation site of plate 1 is suitable to the corn in the elevator and collides with first stressed plate 1 into before tanker, institute
Pressure transducer is stated for detecting the impulsive force that first stressed plate 1 is received；The installation site of second stressed plate 2 is suitable to
Corn in the elevator does not collide into before tanker with second stressed plate 2；
The data acquisition module, is connected with the double plate pressure transducers of the beam type, passes for obtaining the pressure
Impulsive force and the vibration signal of collection second stressed plate 2 that sensor is detected；And believe the impulsive force and the vibration
Number send to display terminal；
The display terminal includes processor and display screen, and the processor is used for using the vibration signal to the punching
Hitting power carries out vibration denoising, and the corn instant productivity according to the impact force's calculation after vibration denoising, and by the paddy
Thing instant productivity is displayed on the display screen.
The metering device that this utility model is provided, because vibration signal first with the second stressed plate 2 is to detecting
Impulsive force carries out denoising, then recycles the impact force's calculation corn instant productivity after denoising, therefore relative to existing
There is technology to improve the degree of accuracy of corn metering.The metering device that this utility model is provided can substantially eliminate the vibration of harvester
Affect, it is adaptable to different field conditions, it is ensured that the accuracy of detection of grain yield.The metering device that this utility model is provided is not only
Simple structure, and high precision is produced in stable, survey, disclosure satisfy that agricultural surveys the needs for producing, will be right on agricultural harvesting machine
Positive role is played in the development of precision agriculture.
It will be appreciated that the double plate pressure transducers of the beam type are adapted to mount to the tanker and elevator of corn mowing machine
Between device, and the installation site of first stressed plate 1 be suitable to the corn in the elevator into before tanker with it is described
First stressed plate 1 collides, and refers to the corn on elevator before tanker is introduced into, and can touch with the first stressed plate 1
Hit, to the impact force of the first stressed plate 1 be impulsive force when corn collides the first stressed plate, and the impulsive force is actually in harvesting
Impulsive force under the influence of machine vibration.
It will be appreciated that the corn that the installation site of second stressed plate 2 is suitable in the elevator enters tanker
Do not collide with second stressed plate 2 before, i.e., do not contact with elevator in the second stressed plate 2, such second stressed plate 2
The impact force of corn will not be subject to, and only detects the vibration signal of harvester.
In the specific implementation, the double plate pressure transducers of beam type can be selected voluntarily, and science and technology of weighing is strangled in such as Hangzhou west
The range of company limited is the beam type pressure transducer XL-1B of 0~6kg.In the double plate pressure transducer of beam type the
One stressed plate 1 and the second stressed plate 2 are fixed together by fixing device, because the first stressed plate 1 can clash into corn,
And the second stressed plate 2 will not clash into corn, therefore the first stressed plate 1 is commonly referred to as " header board ", and the second stressed plate 2 can
To be referred to as " back plate ".General stressed plate is made using big, the wear-resisting material of rigidity, such as No. 45 steel, it is possible to increase force-sensitive link
Natural frequency, reduce due to vibration overshoot damage sensor probability, the abrasion being prevented from during life-time service
Excessively.
It will be appreciated that the metering device that this utility model is provided is using fixed actually ballistic measurement mode, can be with
Realize that the quick nondestructive to grain yield is monitored, less is transformed to harvester, frame for movement is simple.
In the specific implementation, the device that this utility model is provided can also include vehicle positioning module, for detecting harvesting
Put and harvester gait of march seat in the plane；Corresponding, the data acquisition module is additionally operable to obtain the vehicle positioning module detection
The harvester position arrived and the harvester gait of march, and by the harvester position and the harvester gait of march
Send to the display terminal, the processor in the display terminal is additionally operable to the harvester position and the harvester row
Enter speed to be displayed on the display screen.Here, position and the gait of march of harvester are gathered by vehicle positioning module, then
Position and gait of march are shown on a display screen, in order to operating personnel job position and operating speed are understood in real time.
For example with sub-meter grade GPS module, the acquisition to harvester position and gait of march is realized, such that it is able to realize working area
Calculate, be easy to follow-up grain yield distribution map generalization.
In the specific implementation, data acquisition module can adopt the AT90CAN128 that Atmel companies produce for main control core
Piece is designed, and the signal of telecommunication of sensor transmission is gathered in real time using its abundant ADC interface, by CAN and display terminal
Carry out real-time Data Transmission.
In the specific implementation, the internal circuit configuration of data acquisition module can take various forms, and one of which is with AVR
Single-chip microcomputer is that the design of core is：The data acquisition module includes：Signal acquisition circuit, analog to digital conversion circuit, clock
Reset circuit and telecommunication circuit, wherein：
The signal acquisition circuit is used to gather the impulsive force and the vibration signal；
The clock-reset circuit, is connected with the signal acquisition circuit, for controlling the letter of the signal acquisition circuit
Number frequency acquisition；
Analog-digital conversion circuit as described, is connected with the signal acquisition circuit, for the impulsive force and vibration letter
Number it is digitized process；
The telecommunication circuit, is connected with analog-digital conversion circuit as described, for the impulsive force after by digitized processing and
The vibration signal is sent to the display terminal.
It is, of course, also possible to using the data acquisition module of other structures form, such as increase an electricity on the basis of the above
Power-switching circuit, facilitates the use various power supplys for its power supply.Wherein, telecommunication circuit, such as CAN communication circuit, RS232 communications
Circuit, RS248 telecommunication circuits.Water proof and dust proof design can also be carried out to whole data acquisition module, increase the reliability of its work
Property.
In the specific implementation, can be with double between plate pressure transducer and the data acquisition module in the beam type
Signal conditioner is set, for carrying out signal condition to the impulsive force and the vibration signal.For example, a signal condition is set
Circuit, is volt level signal by millivolt level signal condition, is easy to data acquisition module directly to gather.
In the specific implementation, display terminal can arrange the communication interface coordinated with data acquisition module, and such as RS232 leads to
Letter interface, CAN communication interface.
In the specific implementation, processor has two kinds to the mode that the output signal of front and rear panel is processed, and one is that time domain is poor
Point, two is frequency domain differential demodulation, and wherein the process of time-domain difference is substantially：
Header board receives the dual function of corn impact and interference signal, and its output signal si contains corn impact signal pi
With noise signal wi, i.e.,
Si=pi+wi
The cosine vibration that multi-frequency is combined into can be decomposed in view of mechanical vibration, so wi therein can be represented
For：
Wherein A represents amplitude, and f represents frequency, t express times,Represent phase place.
Back plate is blocked after header board, the effect of the impact without corn, only interference signal.Its output signal s ' i is only
Comprising noise signal w ' i, i.e.,
S ' i=w ' i
With header board in the same manner, wherein w ' i can be expressed as
Wherein A ' expression amplitudes, f ' expression frequencies, t express times,Represent phase place.
Then the time-domain difference signal of the double plate pressure transducers of beam type can be expressed as：
Si*=si-s ' i=pi+wi-w ' i=pi+ (wi-w ' i)
Because two sensors are fixed on same base, and while receive signal, so their frequency and phase place
It is identical in synchronization.When amplitude A is equal with A ', wi is just equal with w ' i, and si* is also just equal with pi.
It is impossible to make A and A ' essentially equal in experiment.But can be to make them as far as possible equal, such wi and w ' i are just
Closely, si* will be than si closer to real corn impact signal so that the result of double plate difference is better than veneer not difference
Result.
As shown in figure 3, the process of frequency domain differential demodulation is substantially：
Discrete Fourier transform is carried out respectively to header board output signal and back plate output signal, to carrying out Fourier transformation after
Two output signals carry out frequency domain differential demodulation, then inverse discrete fourier transform is carried out to differentiated frequency-region signal, reduced
The impact force signal of vibration interference.That is the denoising process of processor can include：
Discrete Fourier transform is carried out respectively to the impulsive force and the vibration signal；
The impulsive force and vibration signal obtained to conversion carries out frequency domain differential demodulation；
Frequency-region signal to obtaining after difference carries out inverse discrete fourier transform, obtains removing the impact after vibration noise
Power.
By contrast, the degree of accuracy for calculating yield according to frequency domain differential demodulation mode is higher than time-domain difference mode.
In the specific implementation, in frequency domain differential demodulation mode, signal can also be carried out using Mean square value limit filtration algorithm
Process, for example, as shown in figure 3, a slip mean filter was being carried out before discrete Fourier transform is carried out, then discrete
Carry out a mean filter after Fourier inversion again, further improve degree of accuracy.
Noise being removed for the double plate differential pairs of checking, there is effect, and regulation parameter makes front and rear panel export consistent noise letter
Number, do laboratory dynamic experiment.Make harvester dally, test under conditions of harvesting machine vibration, header board, the change of rear partitioned signal
Change situation, 2 curve tendencies are basically identical.If amplification is adjusted to after suitable numerical value, it is possible to which reduction is made an uproar
Sound interference, improves the signal to noise ratio of system.
In the specific implementation, as shown in figure 1, a moisture transducer can also be arranged, for gathering corn contained humidity；It is right
Answer, the data acquisition module is used to gather the corn contained humidity, and the corn contained humidity is sent to described
Display terminal, the processor of the display terminal is used to include the corn contained humidity in the display screen.
In the specific implementation, as shown in figure 1, a ceding of Taiwan height sensor can also be arranged, for detecting ceding of Taiwan height；It is right
Answer, the data acquisition module is used to gather the ceding of Taiwan height, and the ceding of Taiwan is highly sent to the display terminal,
The processor of the display terminal is used to highly include the ceding of Taiwan in the display screen.
In the specific implementation, as shown in figure 1, an elevator velocity sensor can also be arranged, for detecting that elevator turns
Speed；Corresponding, the data acquisition module is used to gather the elevator rotating speed, and the elevator rotating speed is sent to described
Display terminal, the processor of the display terminal is used to include the elevator rotating speed in the display screen.
In the specific implementation, as shown in figure 1, a land wheel velocity sensor can also be arranged, to detect ground wheel speed.
In the specific implementation, the unlatching flow process of display terminal by the flow process as shown in figure 4, can realize modules
Open.
It should be noted that although some modules are related to flow chart of data processing in this utility model, this practicality is new
The improvements of type simultaneously do not lie in this, but are realized using the existing hardware module with corresponding function, such as processor, its
Frequency domain differential demodulation process is fairly simple, can be realized using existing hardware module completely, therefore improvements of the present utility model
It is not related to the improvement of computer program.
In description of the present utility model, a large amount of details are illustrated.It is to be appreciated, however, that reality of the present utility model
Applying example can put into practice in the case of without these details.In some instances, known method, knot is not been shown in detail
Structure and technology, so as not to obscure the understanding of this description.
Above example only to illustrate the technical solution of the utility model, rather than a limitation；Although with reference to aforementioned reality
Apply example to be described in detail this utility model, it will be understood by those within the art that；It still can be to front
State the technical scheme described in each embodiment to modify, or equivalent is carried out to which part technical characteristic；And these
Modification is replaced, and does not make the spirit and model of each embodiment technical scheme of essence disengaging this utility model of appropriate technical solution
Enclose.
Claims (7)
1. a kind of pair of plate differential type grain yield metering device, it is characterised in that including the double plate pressure transducers of beam type, number
According to acquisition module and display terminal, wherein：
The double plate pressure transducers of the beam type include the first stressed plate, the second stressed plate and pressure transducer, the cantilever
The double plate pressure transducers of beam type are adapted to mount between the tanker of corn mowing machine and elevator, and the peace of first stressed plate
Holding position is suitable to the corn in the elevator and collides with first stressed plate into before tanker, and the pressure is passed
Sensor is used to detect the impulsive force that first stressed plate is received；The installation site of second stressed plate is suitable in the elevator
Corn in device does not collide into before tanker with second stressed plate；
The data acquisition module, is connected, for obtaining the pressure transducer with the double plate pressure transducers of the beam type
The impulsive force for detecting and the vibration signal of collection second stressed plate；And send the impulsive force and the vibration signal
To display terminal；
The display terminal includes processor and display screen, and the processor is used for using the vibration signal to the impulsive force
Carry out vibration denoising, and the corn instant productivity according to the impact force's calculation after vibration denoising, and by the corn wink
When yield be displayed on the display screen.
2. device according to claim 1, it is characterised in that also including vehicle positioning module, for detection harvesting seat in the plane
Put and harvester gait of march；Corresponding, the data acquisition module is additionally operable to obtain what the vehicle positioning module was detected
The harvester position and the harvester gait of march, and the harvester position and the harvester gait of march are sent
To the display terminal, the processor in the display terminal is additionally operable to the harvester position and harvester traveling speed
Degree is displayed on the display screen.
3. device according to claim 1, it is characterised in that the data acquisition module includes：Signal acquisition circuit, mould
Number change-over circuit, clock-reset circuit and telecommunication circuit, wherein：
The signal acquisition circuit is used to gather the impulsive force and the vibration signal；
The clock-reset circuit, is connected with the signal acquisition circuit, and the signal for controlling the signal acquisition circuit is adopted
Collection frequency；
Analog-digital conversion circuit as described, is connected with the signal acquisition circuit, for entering to the impulsive force and the vibration signal
Digitized process；
The telecommunication circuit, is connected with analog-digital conversion circuit as described, for the impulsive force after by digitized processing and described
Vibration signal is sent to the display terminal.
4. device according to claim 1, it is characterised in that also including being connected to the double plate pressure sensings of the beam type
Signal conditioner between device and the data acquisition module, the signal conditioner is used for the impulsive force and the vibration
Signal carries out signal condition.
5. device according to claim 1, it is characterised in that also including moisture transducer, it is aqueous for gathering corn institute
Point；Corresponding, the data acquisition module is used to gather the corn contained humidity, and by the corn contained humidity send to
The display terminal, the processor of the display terminal is used to include the corn contained humidity in the display screen.
6. device according to claim 1, it is characterised in that also including ceding of Taiwan height sensor, for detecting that the ceding of Taiwan is high
Degree；Corresponding, the data acquisition module is used to gather the ceding of Taiwan height, and the ceding of Taiwan is highly sent to the display
Terminal, the processor of the display terminal is used to highly include the ceding of Taiwan in the display screen.
7. device according to claim 1, it is characterised in that also including elevator velocity sensor, for detecting elevator
Device rotating speed；Corresponding, the data acquisition module is used to gather the elevator rotating speed, and by the elevator rotating speed send to
The display terminal, the processor of the display terminal is used to include the elevator rotating speed in the display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621115320.2U CN206177379U (en) | 2016-10-11 | 2016-10-11 | Two board difference formula cereal output metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621115320.2U CN206177379U (en) | 2016-10-11 | 2016-10-11 | Two board difference formula cereal output metering device |
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| Publication Number | Publication Date |
|---|---|
| CN206177379U true CN206177379U (en) | 2017-05-17 |
Family
ID=58677581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201621115320.2U Active CN206177379U (en) | 2016-10-11 | 2016-10-11 | Two board difference formula cereal output metering device |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109104983A (en) * | 2017-06-26 | 2019-01-01 | 株式会社久保田 | harvester and combine harvester |
| CN115031793A (en) * | 2022-08-11 | 2022-09-09 | 成都国光电子仪表有限责任公司 | Bus digital flow metering system |
-
2016
- 2016-10-11 CN CN201621115320.2U patent/CN206177379U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109104983A (en) * | 2017-06-26 | 2019-01-01 | 株式会社久保田 | harvester and combine harvester |
| CN115031793A (en) * | 2022-08-11 | 2022-09-09 | 成都国光电子仪表有限责任公司 | Bus digital flow metering system |
| CN115031793B (en) * | 2022-08-11 | 2022-12-09 | 成都国光电子仪表有限责任公司 | Bus digital flow metering system |
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