CN103914730B - Sugarcane propagation bud counting system based on resistance-type strain gages - Google Patents
Sugarcane propagation bud counting system based on resistance-type strain gages Download PDFInfo
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- CN103914730B CN103914730B CN201310692008.4A CN201310692008A CN103914730B CN 103914730 B CN103914730 B CN 103914730B CN 201310692008 A CN201310692008 A CN 201310692008A CN 103914730 B CN103914730 B CN 103914730B
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Abstract
The invention relates to a sugarcane propagation bud counting system based on resistance-type strain gages. The sugarcane propagation bud counting system comprises a sugarcane propagation bud sensing mechanism, a propagation bud signal amplifying circuit and a propagation bud counting and displaying system, wherein the sugarcane propagation bud sensing mechanism is used for producing propagation bud signals, the propagation bud signal amplifying circuit is used for amplifying the propagation bud signals, and the propagation bud counting and displaying system is used for counting and displaying the amplified propagation bud signals. The propagation bud sensing mechanism comprises a rubber sleeve, rubber sheets and the resistance-type strain gages, wherein the rubber sleeve is in a horn shape; the rubber sheets are fixed on the sleeve wall, away from the horn-shaped end, of the rubber sleeve; each resistance-type strain gage is attached to the corresponding rubber sheet. The propagation bud signals are produced by the resistance-type strain gages and transmitted to the propagation bud signal amplifying circuit, the amplified signals output by the propagation bud signal amplifying circuit enter the propagation bud counting and displaying system, sugarcane propagation buds can be detected and counted, and guarantee is provided for bud damage prevention during propagated sugarcane cutting.
Description
Technical field
The present invention relates to a kind of Caulis Sacchari sinensis seed bud number system, particularly to a kind of Caulis Sacchari sinensis seed bud based on resistance strain plate
Number system.
Background technology
At present, sugarcane mechanization planting technology, the partly new cane planting of domestic research and development have progressively been promoted both at home and abroad
Machine function aligns entirely, but is not yet equipped with the sugarcane kind cutting bud injury preventing device of specialty, can't fully achieve automatization, especially
Cannot solve the problems, such as automatization cut kind of bud injury rate high it is difficult to ensure the germination percentage of planting Caulis Sacchari sinensis, this will produce to the Caulis Sacchari sinensis in the coming year
Amount produces considerable influence.
Sugarcane planting machine, when cutting Caulis Sacchari sinensis kind, will accurately and effectively be accomplished not cut bud, not hinder bud, be necessary for accurately judging
With identification particular location on sugar cane stem for the Caulis Sacchari sinensis seed bud, and it is grown in the feature on its stipes according to Caulis Sacchari sinensis seed bud, you can
Judge the particular location of Caulis Sacchari sinensis seed bud.
A kind of Chinese invention patent (the patent No.: 201210123151.7) disclose cutting of the Caulis Sacchari sinensis based on computer vision
Bud injury preventing system, mainly includes sickle, ccd photographic head and the gripping conveyor structure being driven by electric machine controller.Its structure letter
Single, can recognize that the position of stipes, substantially enable to cut Caulis Sacchari sinensis kind bud injury preventing function, but still suffer from problems with: be 1. every
Section Caulis Sacchari sinensis (i.e. the spacing of two neighboring stipes) is different in size, and is to be difficult to ensure that every section according to cutting sugarcane kind with fixing length
Caulis Sacchari sinensis kind is all containing three stipes seed buds it is impossible to fully meet every section of sugarcane kind all agriculture requirements containing three stipes；2. it is based on
The first-class equipment that images needed for the image procossing of computer vision is easily affected by working environments such as field vibration and weather and is done
Disturb；3. the cutting of its Caulis Sacchari sinensis is complicated with the motor control of conveying mechanism, and accuracy requirement is higher.
Therefore, it is badly in need of redesigning a set of simple, effective and reliable Caulis Sacchari sinensis kind cutting bud injury preventing system, protect sugarcane bud
Integrity, increase in unit cultivated area effectively sugarcane kind quantity, the germination percentage for improving sugarcane kind provides powerful guarantee.
Content of the invention
In order to overcome the shortcomings of in background technology, invent a kind of Caulis Sacchari sinensis seed bud based on resistance strain plate and counted system
System, this system can be detected to Caulis Sacchari sinensis seed bud and be counted, after testing after, the Caulis Sacchari sinensis kind of cutting gained both can meet agronomy will
Ask, the injury rate of Caulis Sacchari sinensis seed bud can be reduced again, the germination percentage for improving sugarcane kind ensures.
For solving above-mentioned technical problem, the technical scheme is that
A kind of Caulis Sacchari sinensis seed bud number system based on resistance strain plate, comprising:
Produce the Caulis Sacchari sinensis seed bud induction mechanism of seed bud signal；
The seed bud signal amplification circuit that seed bud signal is amplified；
Seed bud seed bud signal after amplifying being counted and being shown counts and display system；
Described seed bud induction mechanism includes:
Rubber sleeve, flare；
Sheet rubber, its some sheet rubber is fixed on the jacket wall away from the tubaeform end of rubber sleeve；And
One resistance strain plate is posted on each sheet rubber；
Wherein, seed bud signal transmission is produced to seed bud signal amplification circuit by resistance strain plate.
Preferably, resistance strain plate three fixed resistances of joint are connected into Wheatstone bridge form.
Preferably, described seed bud signal amplification circuit includes:
The two-stage see-saw circuit that seed bud signal is amplified；
Carry out the reverse protection circuit of reverse protection；And
Circuit is carried out with the mu balanced circuit of voltage stabilizing；And
Circuit power voltage is played with the power supply instruction circuit for lamp of the effect of expressing.
Preferably, described seed bud counts and display system includes:
The voltage comparator that seed bud signal after amplifying is compared；
Seed bud signal after comparing is carried out with the single-chip microcomputer of statistical counting；And
Seed bud signal after statistical analysiss is entered the latch of row cache；And
The display that signal in latch is shown.
Described display is led charactron.
The principle that the present invention carries out Caulis Sacchari sinensis seed bud counting is: sugar cane stem is sent into cane stalk by sugarcane planting machine conveying mechanism
Section seed bud induction mechanism enters rubber sleeve, and conveys forward, when cane stalk seed bud is through sheet rubber, cane stalk seed bud phase
Bossing for sugar cane stem produces a pressure to sheet rubber, and then forces the resistance strain plate being attached on sheet rubber
Be deformed, and deflection be converted to the signal of telecommunication, the signal of telecommunication through seed bud signal amplification circuit be amplified into seed bud count with
Display system, the reference voltage being set with voltage comparator is compared, and exports high level or low level according to comparative result,
High and low level enters single-chip microcomputer and carries out statistical analysiss, subsequently counts and is shown by display device, finally realizes Caulis Sacchari sinensis seed bud meter
Number.
Be compared with the prior art, the invention has the benefit that by induction mechanism and seed bud signal amplification circuit and
Seed bud counts and display system, can realize automatization to the detection of Caulis Sacchari sinensis seed bud, provide guarantee for cutting Caulis Sacchari sinensis kind bud injury preventing, accurate
Effect is truly had to accomplish not cut bud, do not hinder bud；Further advantage is that this system structure is simple, scope of application width, stipes seed bud sensed
Journey is simple, reliable, accurate, judge, response is rapid and its led charactron directly displays Caulis Sacchari sinensis seed bud number, simple and clear.
Brief description
Fig. 1 is the Caulis Sacchari sinensis seed bud number system structural representation based on resistance strain plate for the present invention；
Fig. 2 is Caulis Sacchari sinensis seed bud induction mechanism left view of the present invention and main structure diagram；
Fig. 3 is the big circuit theory diagrams of seed bud discharge signal of the present invention；
Fig. 4 is Wheatstone bridge circuit schematic diagram of the present invention；
Fig. 5 is voltage comparator circuit schematic diagram of the present invention；
Wherein: 1, resistance strain plate；2nd, sheet rubber；3rd, rubber sleeve；4th, Caulis Sacchari sinensis seed bud；5th, sugar cane stem；6th, seed bud letter
Number amplifying circuit；7th, voltage comparator；8th, single-chip microcomputer；9th, latch；10th, display；11st, output voltage u2Zero potentiometer；
12nd, two-stage see-saw circuit；13rd, power supply instruction circuit for lamp；14th, mu balanced circuit；15th, reverse protection circuit；16th, amplification
Actuator.
Specific embodiment
To further describe the present invention referring to the drawings and with reference to specific embodiment, to make those skilled in the art join
Book word can be implemented according to this as directed, and the scope of the present invention is not limited to the specific embodiment of the present invention.
As Figure 1-5, a kind of Caulis Sacchari sinensis seed bud number system based on resistance strain plate, comprising: produce seed bud signal
Caulis Sacchari sinensis seed bud induction mechanism；The seed bud signal amplification circuit 6 that seed bud signal is amplified；Seed bud signal after amplifying is counted
The seed bud of number and display counts and display system.
Described seed bud induction mechanism includes: rubber sleeve 3, sheet rubber 2, resistance strain plate 1；Described rubber sleeve 3 is in loudspeaker
Shape, described sheet rubber 2 is rectangular, and the rubber away from tubaeform end is fixed in the uniform arrangement of some sheet rubbers 2 mode circumferentially
On gum cover 3 circumference jacket wall, and a resistance strain plate 1 is posted on each sheet rubber 2；Can be subtracted using tubaeform rubber sleeve 3
Few Caulis Sacchari sinensis seed bud 4 has just enter into impact during cane stalk seed bud induction mechanism, accomplishes effective transition, prevents the damage of Caulis Sacchari sinensis seed bud 4
Wound, the average diameter of tubaeform rubber sleeve 3 is tubaeform root diameter (RD) is slightly less than sugar cane stem 5, when running into diameter than rubber sleeve 3 loudspeaker
During the big sugar cane stem 5 of shape root diameter (RD), rubber sleeve 3 deforms in the presence of sugar cane stem 5 extruding force, and diameter increases, from
And the sugar cane stem 5 of different-diameter can be detected, expand the scope of application of induction mechanism.On tubaeform rubber sleeve 3 uniformly
The sheet rubber 2 of arrangement, preferably has minim gap between each sheet rubber, the effect of sheet rubber 2 experiences raised in cane stalk 5
Caulis Sacchari sinensis seed bud 4, when Caulis Sacchari sinensis seed bud 4 is through tubaeform rubber sleeve 3 and when touching sheet rubber 2, sheet rubber 2 amount of being deformed, profit
With resistance strain effect, deformation information is transformed into electric signal output by the resistance strain plate 1 being attached to its surface.
Described seed bud signal amplification circuit 6(is as shown in Figure 3) include: the anti-phase amplification of two-stage that seed bud signal is amplified
Circuit 12；Carry out the reverse protection circuit 15 of reverse protection；And circuit is carried out with the mu balanced circuit 14 of voltage stabilizing；And to circuit
Supply voltage acts the power supply instruction circuit for lamp 13 of the effect of expressing.Because from resistance strain plate 1, electrical quantity out is very faint, defeated
Go out that energy is less, be vulnerable to the impact of noise, imbalance and gain error it is therefore desirable to two-stage see-saw circuit 12 is putting simultaneously
Greatly, by the seed bud signal input producing on resistance strain plate 1 to two-stage see-saw circuit 12 input, seed bud signal is made to turn
It is changed to discernible voltage signal, seed bud signal amplification circuit 6 is provided with reverse protection circuit 15, prevent power positive cathode from connecing
Instead, mu balanced circuit 14 adjusts the magnitude of voltage required for regulated power supply makes up to.Additionally, in the input of amplifying circuit, in order to
Eliminate the temperature error of resistance strain plate 1 and the sensitivity improving foil gauge, preferably resistance strain plate 1 is connected into Hui Si
Step on bridge circuit, and the initial imbalance of the electric bridge of dummy gauge uneven (having zero-pressure to export) or strain gauge bridge circuit
And the input imbalance pressure of amplifier, two-stage see-saw circuit is provided with output voltage u2Zero potentiometer 11, so that in resistance
When formula foil gauge 1 no deforms, can fast and accurately realize the output zeroing of two-stage see-saw circuit, in order to avoid making to output result
Become larger error, impact Caulis Sacchari sinensis seed bud counts the judgement with display system.
Described seed bud is counted and is included with display system: the voltage comparator 7(that the seed bud signal after amplifying is compared is such as
Shown in Fig. 5)；Seed bud signal after comparing is carried out with the single-chip microcomputer 8 of statistical counting；And the seed bud signal after statistical analysiss is entered
The latch 9 of row cache；And the display 10(display that the signal in latch shown to be preferably led digital
Pipe).The analog voltage signal u that two-stage see-saw circuit 12 is exported by its concrete principle for voltage comparator 72With reference voltage
urIt is compared, and exports high level or low level, level signal is sent into single-chip microcomputer 8 simultaneously and count, and by 9 letters of latch
Number temporary to maintain certain level state, play caching effect, then situation counted by led numeral method.
The principle of whole system is: senses the produced kind of Caulis Sacchari sinensis kind tooth 4 touching sheet rubber 2 using resistance strain plate 1
Bud signal, and seed bud signal input is amplified to seed bud signal amplification circuit 6, the voltage signal input after then amplifying
To voltage comparator 7, it is compared with reference voltage, high and low level is exported according to comparative result；Level signal is inputted monolithic
Machine 8, you can realize seed bud and count, finally the count information being stored in latch 9 is counted situation by led numeral method.
Circuit theory of the present invention and operation principle are further described:
As in Figure 3-5, the electrode of induction mechanism resistance strain plate is drawn with two core shielding lines, by the two of foil gauge
Core shielding line respectively with three fixed resistance r2、r3、r4It is connected into Wheatstone bridge (as shown in Figure 4) and access the amplification of seed bud signal
Circuit.If wiring is correct after the vcc that switches on power, the LED lamp of power supply instruction circuit for lamp 13 is lit, and instruction power supply has been turned on,
Then Wheatstone bridge obtains a vff voltage, exports uo, outfan uoFor accessing the input of two-stage see-saw circuit 12
End, for increasing voltage stability, one mu balanced circuit 14(is as shown in Figure 3 for addition).
After Wheatstone bridge switches on power, under foil gauge no deformation, r1/r2=r3/r4,uo=0, bridge balance, two
The output voltage values u of level see-saw circuit2Should be zero or closely zero.
In order to more accurate, it is provided with output voltage u in circuit2Zero potentiometer (in Fig. 3 shown in 11 marks) and amplification
Multiple actuator slide rheostat r8(in Fig. 3 shown in 16 marks), when foil gauge no deforms, if two-stage see-saw circuit is defeated
Go out to be not zero, then adjustable output voltage u2Zero potentiometer r10, make two-stage inverting amplifier output voltage u2For 0.
After zeroing terminates, slight bending foil gauge, export termination circuit tester voltage gear in two-stage see-saw circuit 12, can
To see the change in voltage of output.Furthermore, it is possible to by adjusting slide rheostat r8To adjust the output multiple of amplifying circuit.
By continuous debugging circuit, the suitable amplification of final choice, that is, determine suitable r8Resistance.Electricity will be amplified
Road outfan accesses voltage comparator 7, and voltage comparator 7 connects single-chip microcomputer 8, and single-chip microcomputer 8 connects latch 9, and latch 9 is last
Connect led charactron, thus connecting all circuits or the equipment of whole system.Conveying effect in sugarcane planting machine conveying mechanism
Under, sugar cane stem 5 enters tubaeform rubber sleeve 3, and when Caulis Sacchari sinensis seed bud 4 boss touching sheet rubber 2, sheet rubber 2 becomes
Shape, the resistance value of the resistance strain plate 1 being bonded on sheet rubber 2 will change therewith, thus causing uoAnd amplifying circuit
Output u2Change.
The voltage signal u of two-stage see-saw circuit 12 output2Enter voltage comparator 7 and reference voltage urIt is compared,
High level or low level are exported according to comparative result, and level signal is inputted single-chip microcomputer 8, counted by single-chip microcomputer 8, led
Charactron display digit successively, that is, detect after meeting proportion of crop planting stipes seed bud, counts and resets, subsequently enters the next one and follow
Ring, continues to count and shows.
Claims (3)
1. a kind of Caulis Sacchari sinensis seed bud number system based on resistance strain plate, comprising:
The Caulis Sacchari sinensis seed bud induction mechanism of-generation seed bud signal；
- to seed bud signal amplify seed bud signal amplification circuit；
- the seed bud signal after amplifying counted and the seed bud that shown counts and display system；
It is characterized in that:
Described seed bud induction mechanism includes:
Rubber sleeve, flare；
Some sheet rubbers are fixed on the jacket wall away from the tubaeform end of rubber sleeve；And post on each sheet rubber a resistance-type should
Become piece；
Described seed bud counts and display system includes: the voltage comparator that the seed bud signal after amplifying is compared；To comparing
Seed bud signal afterwards carries out the single-chip microcomputer of statistical counting；Seed bud signal after statistical analysiss is entered the latch of row cache；And
The display that signal in latch is shown；
Wherein, seed bud signal transmission is produced to seed bud signal amplification circuit by resistance strain plate；By resistance strain plate joint
Three fixed resistances are connected into Wheatstone bridge form.
2. according to claim 1 the Caulis Sacchari sinensis seed bud number system based on resistance strain plate it is characterised in that: described seed bud
Signal amplification circuit includes:
The two-stage see-saw circuit that seed bud signal is amplified；
Carry out the reverse protection circuit of reverse protection；
Circuit is carried out with the mu balanced circuit of voltage stabilizing；And
Circuit power voltage is played with the power supply instruction circuit for lamp of the effect of expressing.
3. according to claim 1 the Caulis Sacchari sinensis seed bud number system based on resistance strain plate it is characterised in that: described display
Device is led charactron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310692008.4A CN103914730B (en) | 2013-12-13 | 2013-12-13 | Sugarcane propagation bud counting system based on resistance-type strain gages |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310692008.4A CN103914730B (en) | 2013-12-13 | 2013-12-13 | Sugarcane propagation bud counting system based on resistance-type strain gages |
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| CN103914730A CN103914730A (en) | 2014-07-09 |
| CN103914730B true CN103914730B (en) | 2017-02-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104904374B (en) * | 2015-06-30 | 2017-03-01 | 广西大学 | A kind of Caulis Sacchari sinensis kind cuts bud injury preventing system |
| CN110924932A (en) * | 2019-12-09 | 2020-03-27 | 中铁第五勘察设计院集团有限公司 | Penetration test equipment and penetration test recorder thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6272819B1 (en) * | 1998-11-17 | 2001-08-14 | Case Corporation | Sugar cane yield monitor |
| CN102630429A (en) * | 2012-04-24 | 2012-08-15 | 广西大学 | Bud injury preventing system for sugarcane cutting |
| CN102663434A (en) * | 2012-04-24 | 2012-09-12 | 广西大学 | Cane stalk recognition method |
| CN203706251U (en) * | 2013-12-13 | 2014-07-09 | 广西大学 | A sugarcane seed bud counting system based on resistor type foil gauges |
-
2013
- 2013-12-13 CN CN201310692008.4A patent/CN103914730B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6272819B1 (en) * | 1998-11-17 | 2001-08-14 | Case Corporation | Sugar cane yield monitor |
| CN102630429A (en) * | 2012-04-24 | 2012-08-15 | 广西大学 | Bud injury preventing system for sugarcane cutting |
| CN102663434A (en) * | 2012-04-24 | 2012-09-12 | 广西大学 | Cane stalk recognition method |
| CN203706251U (en) * | 2013-12-13 | 2014-07-09 | 广西大学 | A sugarcane seed bud counting system based on resistor type foil gauges |
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