CN208399976U - A kind of combine harvester information integrated system - Google Patents
A kind of combine harvester information integrated system Download PDFInfo
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- CN208399976U CN208399976U CN201821181741.4U CN201821181741U CN208399976U CN 208399976 U CN208399976 U CN 208399976U CN 201821181741 U CN201821181741 U CN 201821181741U CN 208399976 U CN208399976 U CN 208399976U
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Abstract
The utility model relates to a kind of combine harvester information integrated systems, including data acquisition module, control module and display module, data acquisition module is connected with Analog input mModule, control module is connected with display module, and conditioning circuit is equipped between Analog input mModule, conditioning circuit includes sequentially connected charge converter amplifier circuit, second order active high-pass filtering circuit, full-wave rectification amplifying circuit and voltage comparator circuit；Pass through the existing combining machine information of multiple, multiple sensors data collecting module collecteds, it is acquired through Analog input mModule, programmable PLC controller is transmitted to as control module, and display and interactive controlling communication are carried out under the conduct of human-computer interaction touch screen, to reduce driving difficulty and experience needs, intelligent fine monitoring combine harvester, further expands and such as remotely controls, surveys production function, pushes combine harvester to automation, generalization, up to changes development.
Description
Technical field
The utility model relates to a kind of combine harvester information integrated systems, belong to monitoring system technical field.
Background technique
Along with development being continuously increased with population of society, people are also growing day by day, use for the demand of grain
Combine harvester carries out harvesting to crops and is conducive to expand planting scale, is a kind of a kind of machine of propulsion agricultural modernization development
Device, but the degree of combine harvester intellectually and automatically in the prior art is lower, and old-fashioned harvester is pre- in terms of failure
The anti-experience for being heavily dependent on driver can pass through the sound or perhaps oneself regular check machine of machine
Device, but existing driver's cabin Design on thermal insulation reduces the percent of pass of sound, greatly increases the amount of labour of people, for crops
Loss amount and artificial monitoring difficulty, cause the experience and technical requirements to driver high, therefore combine harvester needs gradually
To automation, generalization and tall and bigization develop.
It is also disclosed the monitoring system of some pairs of harvesters in the prior art, the one kind proposed such as patent CN202035291U
Integrated monitoring system for combine harvester etc., since harvester is still based on mechanization, instrument is also simulation instrument, by from
Collected analog signal carries out processing and converts to be shown on simulation instrument board on sensor, analog signal processing
Device does not have good jamproof ability, it is difficult to carry out Function Extension, it would be highly desirable to improve.
Utility model content
The purpose of this utility model is in view of the drawbacks of the prior art, to provide a kind of combine harvester information integrated system.
The utility model is achieved by the following technical solutions:
A kind of combine harvester information integrated system, including data acquisition module, control module and display module, the number
It include several sensors according to acquisition module, the sensor is for measuring combining machine information and being converted to positive and negative variation charge
Signal output, several sensors include obliquity sensor, velocity sensor, feeding quantity sensor, Magnetic Sensor, grain loss biography
The one or more of sensor, cereal humidity sensor and drum rotation speed sensor, wherein the data acquisition module is connected with mould
Analog quantity input module, the Analog input mModule lead to for being acquired to the positive and negative variation charge signal that sensor generates
It crosses CAN bus and is transmitted to control module, the control module is connected with display module, and is equipped between Analog input mModule
Conditioning circuit；
The conditioning circuit includes sequentially connected charge converter amplifier circuit, second order active high-pass filtering circuit, all-wave
Amplifying circuit and voltage comparator circuit are rectified, the charge converter amplifier circuit is for receiving Analog input mModule acquisition just
Negative variation charge signal is converted to positive and negative variation voltage signal and amplifies output, and the second order active high-pass filtering circuit is for connecing
Receiving the positive and negative variation voltage signal of charge converter amplifier circuit output and filtering forbids low wave to pass through, the full-wave rectification amplification electricity
Road is used to receive the positive and negative variation voltage signal of second order active high-pass filtering circuit output, and it is defeated to be converted into unipolar analog signal
Out, the analog signal that the voltage comparator circuit is used to receive the output of full-wave rectification amplifying circuit is converted into be identified by control module
Digital signal；
The control module is PLC controller, and CAN bus is equipped between the Analog input mModule and PLC controller
Converter, the display module are human-computer interaction touch screen, are equipped with and exchange between the human-computer interaction touch screen and PLC controller
Machine.
The utility model has the following beneficial effects:
(1) defeated through analog quantity by the existing combining machine information of multiple, multiple sensors data collecting module collecteds
Enter module acquisition, be transmitted to programmable PLC controller, and carries out display and interactive controlling under human-computer interaction touch screen and lead to
Letter, to reduce driving difficulty and experience needs, intelligent fine monitoring combine harvester；(2) it is passed using conditioning circuit processing
The signal that sensor generates spreads out of small-signal with charge converter amplifier circuit amplification sensor, keeps voltage meeting millivolt level other, with
Just second order active high-pass filtering circuit receives noise reduction, and alleviating machine vibration influences signal acquisition, with full-wave rectification amplifying circuit
Signal is further amplified, final voltage comparator circuit is converted into digital signal to identify, it is integrally anti-dry to improve integrated system
Disturb ability, conducive to further expand such as remotely control, survey produce function, push combine harvester to automation, generalization, up to
Change development.
Detailed description of the invention
Fig. 1 is the utility model structure principle chart.
Fig. 2 is the utility model charge converter amplifier circuit figure.
Fig. 3 is the utility model second order active high-pass filtering circuit figure.
Fig. 4 is the utility model full-wave rectification amplification circuit diagram.
Fig. 5 is the utility model voltage comparator circuit figure.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.
Referring to Fig. 1, a kind of combine harvester information integrated system, including data acquisition module, control module and display mould
Block, the data acquisition module include several sensors, and the sensor is positive for measuring combining machine information and converting
Negative variation charge signal output, wherein the data acquisition module is connected with Analog input mModule, the analog input mould
Block is transmitted to control module, the control by CAN bus for being acquired to the positive and negative variation charge signal that sensor generates
Molding block is connected with display module, and conditioning circuit is equipped between Analog input mModule；
The conditioning circuit includes sequentially connected charge converter amplifier circuit, second order active high-pass filtering circuit, all-wave
Amplifying circuit and voltage comparator circuit are rectified, the charge converter amplifier circuit is for receiving Analog input mModule acquisition just
Negative variation charge signal is converted to positive and negative variation voltage signal and amplifies output, and the second order active high-pass filtering circuit is for connecing
Receiving the positive and negative variation voltage signal of charge converter amplifier circuit output and filtering forbids low wave to pass through, the full-wave rectification amplification electricity
Road is used to receive the positive and negative variation voltage signal of second order active high-pass filtering circuit output, and it is defeated to be converted into unipolar analog signal
Out, the analog signal that the voltage comparator circuit is used to receive the output of full-wave rectification amplifying circuit is converted into be identified by control module
Digital signal.
Several sensors include obliquity sensor, velocity sensor, feeding quantity sensor, Magnetic Sensor, grain loss biography
The one or more of sensor, cereal humidity sensor and drum rotation speed sensor；
The velocity sensor is Hall sensor, photoelectric sensor, fibre optical sensor or electrodynamic type velocity sensor；Institute
Stating feeding quantity sensor is infrared sensor, laser sensor or ultrasonic sensor；The cereal humidity sensor is chlorination
Lithium humidity sensor, semiconductive ceramic humidity sensor, oxidation alumina humidity sensor or microwave humidity sensor；The roller turns
Fast sensor is magnetoelastic sensor or raster pattern torque sensor；
The obliquity sensor is used for combine harvester fuselage angle of bank measurement, and then realizes long to remaining stalk is gathered in
The safety and play the role of protecting blade that the more preferable control of degree and guarantee operate avoid the too long influence cultivation of stalk, stalk
It is too short, in stone can damage blade, SCA103T can be selected in obliquity sensor model；
The speed when velocity sensor is to realize to crop harvesting machine operation is measured and is converted to exportable
Signal controls, it may also be used for measure per mu yield indirectly, UB1211 can be selected in velocity sensor model for intelligent measuring；
The feeding quantity sensor is used to measure the height of combine harvester cutting stubble, guarantees certain feed quantity,
Prevent that feed quantity is excessive and causes to block, feeding quantity sensor can be selected such as the patents such as patent CN101502209 disclosed in hello
Enter amount test device；
The Magnetic Sensor selects model such as MSA111C-SSI-K-H- for judging mixed metal impurities in cereal
S；Loss amount when grain loss sensor is used to test the separation of combination harvester and cleans, mostly piezoelectric ceramic type, to push away
Grass Valley ratio and threshing, separation and cleaning load are exported, control separation and cleaning plant work are in optimum state, grain loss sensing
Device selects PVDF type, and a piece of piezo-electric crystal diaphragm is mounted on the center of one piece of rectangle iron plate, and premature rice grain is hit instantly
It hits sensor iron plate and generates mechanical oscillation, be changed into corresponding electric impulse signal through piezo-electric crystal diaphragm；
AT89C51 type can be selected for measuring grain moisture in the cereal humidity sensor；The drum rotation speed sensor
It is combined harvester drum rotation speed for measuring, LPS60-12C, cereal humidity sensor, the cooperation of drum rotation speed sensor can be selected
It can control the clean level of threshing.
The control module is PLC controller.The PLC controller data that acquisition module acquires for receiving data,
It is electrically connected with combine harvester, four-way 57BYG250C composite stepper motor and gloomy wound SH-20403 stepper motor driver etc.
Control harvester movement is connect, can be selected Siemens s7-1200: maximum CPU can at most connect eight signaling modules, to prop up
Hold other digital quantities and analog quantity I/O；Or SIMATIC S7-1200: the integrated load memory and 2 KB of up to 2 MB are provided
Integrated memory internal storage, for store other files or update the integrated PROFINET interface of controller system firmware be used for into
Row programming and HMI and PLC-to-PLC communication, with automatic error correction function RJ45 connector, support up to 16 with
Net very much connection and following agreement: TCP/IP native, ISO on TCP and S7 communication.
CAN bus converter is equipped between the Analog input mModule and PLC controller；The Analog input mModule
The input of Siemens AI4/AQ2 multi-analog, including 9 road DI/PI, 8 road AI, 5 road DO, 3 road serial ports can be selected, with work
The guide tracked installation of industry connecting terminal facilitates client unified flat to host computer management using standard MODBUS RTU communication protocol
Platform is cascaded by 485 interfaces and is used, and system expansion is facilitated；GCAN-202 can be selected in the CAN bus converter, and being used for will
CAN is converted to ethernet communication, and collected information is transmitted to PLC controller.
The display module is human-computer interaction touch screen, is equipped with and hands between the human-computer interaction touch screen and PLC controller
It changes planes；The human-computer interaction touch screen is the touch screen with haptic feedback system, accesses PLC control by human-computer interaction touch screen
Device processed reads data, and real-time display data acquisition module is transmitted to the combining machine information in PLC controller, including revolving speed,
Oil mass and temperature display, and allow PLC controller to realize and what screw feeder, roller and cereal were cleaned and was detached from is controlled to harvester
Working condition produces lively visual effect with liquid crystal display picture to replace mechanical push button panel；
Human-computer interaction touch screen includes human-computer interaction interface, and human-computer interaction interface includes input/output region configuration, refers to
Show that lamp group state, function key configuration, control key configuration and text show configuration；
It is complete in a communications system using interchanger since PLC controller has the network interface communication more than two parts
At information exchange functions, optional Hi-F1620GBL model.
Referring to fig. 2, the charge converter amplifier circuit includes fixed resistance R1 and slide rheostat R2；
The fixed resistance R1 is in order to which the positive and negative variation charge signal that sensor is generated is converted to positive and negative variation voltage
Signal, the slide rheostat R2 carry out converted next positive and negative variation voltage signal by adjusting the resistance of itself
Amplification.By this charge amplifying circuit, it is converted come voltage to will become millivolt level other, can preferably be transmitted to below
Filter circuit.
Referring to Fig. 3, since to fall to the frequency for shaking it on sensor very high for cereal, but due to the quality of cereal
It is very light, so the vibration signal generated also can be very low, harvester also due to the vibration of engine and generate noise, in other words can
The signal that a part of cereal vibration generates is covered, so there must be filter circuit to forbid passing through for low wave, although machine vibration
The noise of generation is very big, but due to the sufficiently bulky of machine so its vibration frequency can be very low, second order active high-pass filtering
Circuit can alleviate the influence that machine vibration shakes cereal well；
In order to obtain optimal noise reduction ratio, done several groups of experiments: cutoff frequency takes 1KHZ, capacitor C1 to take 0.01uF, capacitor
C2 takes 0.01uF, resistance R3 to take 22 kilo-ohms, and resistance R4 takes 12 kilo-ohms, acquisition the result is that frequency road error 6%.Do not change
The value of two capacitors, taking cutoff frequency respectively is 2 kHz, 5 kHz, 8 kHz.And corresponding resistance R3 takes respectively
Value is 11,4.7,3 kilo-ohms, and then value is 5.6 2.4 1.5 to R4, three values, and the frequency error that this three groups of data obtain is
1.39% and 5.22% and 6.22%.In summary it can be seen can obtain best noise reduction when cutoff frequency is set as 2KHZ
Than.
Referring to fig. 4, due to be input to charge converter amplifier circuit from sensor be sign change positive and negative variation charge
Signal, so what is exported after through second order active high-pass filtering circuit should be then the positive and negative variation voltage letter of positive and negative variation
Number, but the impact signal of cereal is extracted in order to which subsequent circuit is convenient, so having to the letter positive and negative variation
Number it is converted into unipolar positive and negative variation voltage signal, and due to by the signal after charge amplifying circuit, it is still excessively small,
So in order to more convenient back circuit for the extraction of signal therefore it is necessary to further to be amplified to signal, this is just
The effect of full-wave rectification amplifying circuit is embodied；
U3 reversed inputs, negative polarity export half-wave rectifying circuit: U4 is reversed summing circuit.When input is greater than zero
When, halfwave rectifier output is less than zero, D1 cut-off, and opposite D2 is connected, since Uo1 is less than zero, so Uo2 is just
It can be less than zero.And R9=R7/2, so the electric current for flowing to summing junction generated from Uo2 is bigger by one than what is generated from input point
Times, and direction is opposite.It can be seen that output > 0 of U.When U input<0, Uo1>0, D1 conducting, D2 cut-off,
Uo2=0, electric current flow to summing junction, U output > 0, to realize the rectification of all-wave through R7.Amplification factor is found by calculating
A1=R11/R7, therefore when R7 is fixed, it is thus only necessary to change the value of R11, so that it may change the multiple of amplification.
LM393 is selected referring to Fig. 5, U5, is then twin voltage comparator integrated circuit as LM393.R13 is as current potential
Device can change voltage by adjusting its point.The voltage come is transmitted through compared with the voltage set in comparator, for output
Useful signal can then be transformed into square-wave signal for PLC controller identify.
By the existing combining machine information of multiple, multiple sensors data collecting module collecteds, through analog input
Module acquisition, is transmitted to programmable PLC controller, and the signal generated using conditioning circuit processing sensor is converted with charge
Amplifying circuit amplifies sensor and spreads out of small-signal, keeps voltage meeting millivolt level other, so that second order active high-pass filtering circuit connects
It incorporates and makes an uproar, alleviating machine vibration influences signal acquisition, signal is further amplified with full-wave rectification amplifying circuit, final voltage
Comparison circuit is converted into digital signal to identify, improves integrated system entirety anti-interference ability, and in human-computer interaction touch screen
Under carry out display and interactive controlling communication, to reduce driving difficulty and experience needs, intelligent fine monitoring combine harvester,
Conducive to further expand such as remotely control, survey produce function, push combine harvester to automation, generalization, up to change development.
In the description of the present invention, it should be understood that in the description of the present invention, unless otherwise indicated,
" several " are meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected, positive and negative variation charge signal includes electric current, voltage and pulse signal；It can
To be to be connected directly, the connection inside two elements can also be can be indirectly connected through an intermediary.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood by concrete condition.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should all cover within the protection scope of the present utility model.Therefore, the protection scope of the utility model should be with
Subject to the protection scope of claims.
Claims (7)
1. a kind of combine harvester information integrated system, including data acquisition module, control module and display module, the data
Acquisition module includes several sensors, it is characterized in that, the data acquisition module is connected with Analog input mModule, the simulation
Amount input module is transmitted to control mould by CAN bus for being acquired to the positive and negative variation charge signal that sensor generates
Block, the control module are connected with display module, and conditioning circuit is equipped between Analog input mModule；
The conditioning circuit includes sequentially connected charge converter amplifier circuit, second order active high-pass filtering circuit, full-wave rectification
Amplifying circuit and voltage comparator circuit, the charge converter amplifier circuit are used to receive the positive and negative change of Analog input mModule acquisition
Change charge signal to be converted to positive and negative variation voltage signal and amplify output, the second order active high-pass filtering circuit is for receiving electricity
The positive and negative variation voltage signal and filtering that lotus converter amplifier circuit exports forbid low wave to pass through, and the full-wave rectification amplifying circuit is used
In the positive and negative variation voltage signal for receiving the output of second order active high-pass filtering circuit, it is converted into unipolar analog signal output,
The analog signal that the voltage comparator circuit is used to receive the output of full-wave rectification amplifying circuit is converted by control module identification
Digital signal.
2. a kind of combine harvester information integrated system as described in claim 1, it is characterized in that, several sensors include inclination angle
Sensor, velocity sensor, feeding quantity sensor, Magnetic Sensor, grain loss sensor, cereal humidity sensor and roller turn
The one or more of fast sensor.
3. a kind of combine harvester information integrated system as claimed in claim 2, it is characterized in that, the velocity sensor is suddenly
That sensor, photoelectric sensor, fibre optical sensor or electrodynamic type velocity sensor；The feeding quantity sensor is infrared sensing
Device, laser sensor or ultrasonic sensor；The cereal humidity sensor is lithium chloride humidity sensor, semiconductive ceramic is wet
Spend sensor, oxidation alumina humidity sensor or microwave humidity sensor；The drum rotation speed sensor be magnetoelastic sensor or
Raster pattern torque sensor.
4. a kind of combine harvester information integrated system as described in claim 1, it is characterized in that, the control module is PLC
Controller.
5. a kind of combine harvester information integrated system as claimed in claim 4, it is characterized in that, the Analog input mModule
CAN bus converter is equipped between PLC controller.
6. a kind of combine harvester information integrated system as claimed in claim 4, it is characterized in that, the display module is man-machine
Interaction touch screen, is equipped with interchanger between the human-computer interaction touch screen and PLC controller.
7. a kind of combine harvester information integrated system as described in claim 1 ~ 6 any one, it is characterized in that, the charge
Converter amplifier circuit includes fixed resistance and slide rheostat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821181741.4U CN208399976U (en) | 2018-07-25 | 2018-07-25 | A kind of combine harvester information integrated system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821181741.4U CN208399976U (en) | 2018-07-25 | 2018-07-25 | A kind of combine harvester information integrated system |
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| CN208399976U true CN208399976U (en) | 2019-01-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345559A (en) * | 2019-08-06 | 2021-02-09 | 中国农业机械化科学研究院 | Online grain moisture detection device and detection method of combine harvester |
| CN113702065A (en) * | 2021-08-27 | 2021-11-26 | 河南科技大学 | Combine seat stress test system based on PLC control |
-
2018
- 2018-07-25 CN CN201821181741.4U patent/CN208399976U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345559A (en) * | 2019-08-06 | 2021-02-09 | 中国农业机械化科学研究院 | Online grain moisture detection device and detection method of combine harvester |
| CN113702065A (en) * | 2021-08-27 | 2021-11-26 | 河南科技大学 | Combine seat stress test system based on PLC control |
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