CN105300089B - A kind of crop dryer blanking amount detecting device based on ARM - Google Patents
A kind of crop dryer blanking amount detecting device based on ARM Download PDFInfo
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- CN105300089B CN105300089B CN201510854185.7A CN201510854185A CN105300089B CN 105300089 B CN105300089 B CN 105300089B CN 201510854185 A CN201510854185 A CN 201510854185A CN 105300089 B CN105300089 B CN 105300089B
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- blanking
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Abstract
The present invention relates to a kind of crop dryer blanking amount detecting device based on ARM；Including blanking system, blanking detection unit, phototube coupling unit, arm processor unit, 485 communication modules, configuration software touch-screen and power module；Blanking detection unit detects the magnet steel on belt wheel by Hall sensor for countering, arm processor unit detects pwm signal trailing edge number of times, calculate the hopper being attached on belt wheel and topple over number, then hopper number will be toppled over and will be transferred to configuration touch-screen software, and display drying machine blanking doses directly perceived on the touchscreen.The present invention can in real time obtain the load of crop dryer, and be intuitively shown on configuration software touch-screen, and auxiliary calculates crop dryer and dries moisture, have the advantages that high precision, good stability and easy to operate.
Description
Technical field
The present invention relates to a kind of crop dryer blanking amount detecting device based on ARM, belong to cereal blanking detection field.
Background technology
With the continuous improvement of high speed development and the living standards of the people of national economy, grain is used to eating, it is feeding still
Industrialization deep processing, is consequently increased for grain quality requirement.Country automates for mechanization of agriculture and requires and rural area
The circulation of soil mode, agricultural the sequence of operations mode such as site preparation, farming, sowing, plant protection, results entire mechanization it is general
And in, it is used as main grain by weather and wants the drying mode to eliminate certainly.Into after the World Trade Organization, external high-quality grain
Food also impacts to China's grain market.How the Grain Loss for receiving hand is bottomed out, produce high-quality commodity
Grain, the mechanization of grain-drying is more even more important than the mechanization of farm work, and it is cereal high yield, the important leverage bar of good harvest
Part.
The detection of drying machine drying course grain moisture content, be always judge drying machine running status and grain quality must
Evaluation criterion is wanted, according to the characteristics of circulating grain drying, drying process starts entrance and discharge without grain afterwards, carries out
Dry grain is circulated in drying machine main body and between entering elevator of putting out cereal always.And among the drying process of grain,
Dry is invariant, and only moisture is in change.This just illustrates that, in circulating Grain Drying Process, the reduction of gross weight is water
The evaporation capacity for dividing.Because crop dryer inlet amount is certain, therefore the detection of the doses that discharged to crop dryer is to dry moisture
The key of detection.Furthermore, in Grain Drying Process, it is also required to using drying machine load as mark to drying collecting for expense
It is accurate.
The content of the invention
In order to solve the above problems, the invention discloses a kind of crop dryer blanking amount detecting device based on ARM；Mesh
Be that a kind of detection means for crop dryer load is provided, the device can in real time obtain crop dryer
Load, and load is intuitively shown on configuration software touch-screen and can aided in calculating crop dryer with real-time control
Dry moisture, there is high precision, good stability and easy to operate.
To achieve the above object, the technical solution adopted by the present invention is as follows：
Blanking system carries out blanking by tumbling for hopper, manual calibration is carried out first and calculates single hopper material containing amount, will
Data input is input into configuration software and is preserved by touch-screen, and blanking detection unit detects synchronous by Hall sensor for countering
Magnetic induction intensity on belt wheel, is the pwm signal of 3.3V by phototube coupling unit output amplitude, and arm processor unit passes through
The external interrupt Air conduct measurement pwm signal trailing edge number of times of I/O pins, calculates discharge bucket and topples over number, then by 485 communications
Module will topple over hopper number and be transferred to configuration touch-screen software according to " MODBUS " communications protocol, with the single material calibrated before
Bucket material containing amount mutually can obtain drying machine blanking doses at convenience, on the touchscreen display directly perceived and can be with real-time control.
A kind of crop dryer blanking amount detecting device based on ARM, including blanking system, blanking detection unit, photoelectricity
Isolated location, arm processor unit, 485 communication modules and touch-screen；
The blanking system is made up of servomotor, synchronous pulley, conveyer belt and hopper, between described hopper opening upwards etc.
Away from fixation on the conveyor belt；Conveyer belt ring set is on synchronous pulley and the installation perpendicular to the ground of its zone face；The rotating shaft of servomotor
Connection synchronous pulley；Synchronous pulley is driven to rotate by servomotor, hopper turns to blanking of being tumbled when peak is downwardly turned over；
The blanking detection unit is made up of Hall sensor for countering and magnet steel；The Hall sensor for countering is used for magnetic
Field signal is converted into electric signal, and its output signal type is that NPN is normally opened, and the normally opened signals of NPN refer to be sensed when Hall is counted
Output line is hanging when device does not sense magnetic field, is now output as 24V high level；When Hall sensor for countering senses that magnetic field is believed
Number when, output line and ground conductive now export low level.The Hall sensor for countering is fixed on synchronization by bracket-suspending
The place that magnet steel can pass through when belt wheel is rotated, and magnet steel is less than 1cm with the distance of Hall sensor for countering；The magnet steel according to
With hopper 1:3 quantitative proportion is uniformly fixed on synchronous pulley, for producing magnetic field.The Hall sensor for countering output
End is connected with the photoelectrical coupler input of phototube coupling unit by Du Pont's line；
The phototube coupling unit is made up of photoelectrical coupler and its interlock circuit；Photoelectrical coupler is used to detect blanking
The amplitude of unit output is synchronously converted into the electric signal that amplitude is 3.3V, the phototube coupling unit output for the electric signal of 24V
Electric signal be connected with the external interrupt passage of arm processor unit I/O pins；
The arm processor unit, its selection STM32 chip is exported as main control MCU for gathering phototube coupling unit
Electric signal rising edge number of times to calculate hopper number of tumbling, follow " MODBUS " communications protocol and group by 485 communication modules
State software is communicated；
485 communication module is made up of RS485 communication chips and peripheral circuit, for same point that produces main control MCU
Signal is converted into differential signal and is transmitted；
The phototube coupling unit, arm processor unit and 485 communication modules are welded in one piece of PCB.
The touch-screen is MCGS touch-screens, and input is examined by the crop dryer doses that configuration software is worked out in touch-screen
Survey application software, the display directly perceived for blanking doses and the real-time control to detection means.Crop dryer doses is detected
Software can include the display of blanking amount according to prior art program, content, and the calculating for drying moisture shows, dries the meter of expense
Calculate display, and some data derivation, also control blanking detection unit start and stop.
The detection means is powered by power module.
Advantages of the present invention：
Coordinated using magnet steel fixed on Hall sensor for countering and synchronous pulley, realization is inclined to synchronous pulley elevating hopper
Turn over the measurement of number, simple structure, good stability, it is ensured that certainty of measurement；
Realize that slave computer arm processor is soft with host computer configuration according to " MODBUS " communications protocol using 485 communication interfaces
The communication of part touch-screen, transmission range is long, strong interference immunity.
The present invention realizes crop dryer load intuitively display and real-time control, easy to operate, is greatly enhanced
Flexibility and scalability, simple structure, cost of manufacture are cheap, with small volume, the features such as reliability is high.
Brief description of the drawings
Fig. 1 is a kind of crop dryer doses structure of the detecting device block diagram based on ARM；
Fig. 2 is blanking system of the present invention and blanking detection unit schematic diagram；
1st, conveyer belt, 2, hopper, 3, magnet steel, 4, synchronous pulley, 5, Hall sensor for countering, 6, servomotor；
Specific embodiment
Embodiment 1：Reference picture 1.A kind of crop dryer doses detection means based on ARM, including supplied by power module
The blanking system of electricity, blanking detection unit, phototube coupling unit, arm processor unit, 485 communication modules and touch-screen；
The blanking system is made up of servomotor, synchronous pulley, conveyer belt and hopper, between described hopper opening upwards etc.
Away from fixation on the conveyor belt；Conveyer belt ring set is on synchronous pulley and the installation perpendicular to the ground of its zone face；Servomotor turn
Axle connects synchronous pulley；Synchronous pulley is driven to rotate by servomotor, hopper turns to when peak is downwardly turned over and tumbles
Material；
The blanking detection unit is made up of Hall sensor for countering CFJ12-20K and magnet steel.The Hall counts sensing
Device is the Hall voltage generator by voltage adjuster, difference amplifier, the output stage group of Schmidt trigger and open collector
Into magneto-dependent sensor, the Hall sensor for countering be used for magnetic field signal is converted into electric signal, its output signal type is
NPN is normally opened, and the normally opened signals of NPN refer to that, when Hall sensor for countering does not sense magnetic field, output line is hanging, now defeated
It is 24V high level to go out；When Hall sensor for countering senses magnetic field signal, output line and ground conductive now export low electricity
It is flat.The magnet steel be used for produce magnetic field, its with hopper number into 1:3 ratio uniform is fixed on synchronous pulley.It is described fall
Material detection unit output end is connected with phototube coupling unit input by Du Pont's line；
The phototube coupling unit is made up of photoelectrical coupler PC817 and interlock circuit, for blanking detection unit is defeated
The amplitude for going out synchronously is converted into the electric signal that amplitude is 3.3V, the telecommunications of the phototube coupling unit output for the electric signal of 24V
Number it is connected with the external interrupt passage of arm processor unit I/O pins；
The arm processor unit, it selects STM32F103RCT6 chips as main control MCU, for gathering pwm signal
Rising edge number of times simultaneously calculates hopper number of tumbling, and follow " MODBUS " communications protocol by 485 communication modules is carried out with touch-screen
Communication；
485 communication module is made up of RS485 communication chips SP3485EN and peripheral circuit, for main control MCU to be produced
Raw same sub-signal is converted into differential signal and is transmitted；
The phototube coupling unit, arm processor unit and 485 communication modules are welded in one piece of PCB.
The touch-screen selects MCGS touch-screens, and model is TPC7062KX, is input into touch-screen and is worked out by configuration software
Crop dryer doses detection application software, the display directly perceived for blanking doses and the real-time control to detection means.
Crop dryer doses inspection software can include the display of blanking amount, dry the meter of moisture according to prior art program, content
Calculate display, the calculating for drying expense show, and some data derivation, the also start and stop of control blanking detection unit.
Embodiment 2：Reference picture 2.The blanking system is made up of servomotor, synchronous pulley, conveyer belt and hopper, described
Hopper opening upwards are fixed on the conveyor belt at equal intervals；Conveyer belt ring set is on synchronous pulley and its zone face peace perpendicular to the ground
Dress；The rotating shaft connection synchronous pulley of servomotor；By servomotor drive synchronous pulley rotate, hopper turn to peak to
Tumbled during lower upset blanking；
The blanking detection unit is made up of Hall sensor for countering CFJ12-20K and magnet steel.The Hall counts sensing
Device is the Hall voltage generator by voltage adjuster, difference amplifier, the output stage of Schmidt trigger and open collector
The magneto-dependent sensor of composition, the Hall sensor for countering is used to for magnetic field signal to be converted into electric signal, its output signal type
For NPN is normally opened, the normally opened signals of NPN refer to that, when Hall sensor for countering does not sense magnetic field, output line is hanging, now
It is output as 24V high level；When Hall sensor for countering senses magnetic field signal, output line and ground conductive are now exported low
Level；The place that magnet steel always passes through when the Hall sensor for countering is vacantly rotated installed in synchronous pulley, and magnet steel with
The minimum distance of Hall sensor for countering cannot be greater than 1cm；The magnet steel be used for produce magnetic field, its with hopper number into 1:3
Ratio uniform be fixed on synchronous pulley.
Claims (1)
1. a kind of crop dryer blanking amount detecting device based on ARM, it is characterised in that single including blanking system, blanking detection
Unit, phototube coupling unit, arm processor unit, 485 communication modules and touch-screen；
The blanking system includes servomotor, synchronous pulley, conveyer belt and hopper, and the hopper opening upwards are solid at equal intervals
Determine on the conveyor belt；Conveyer belt ring set is on synchronous pulley and the installation perpendicular to the ground of its zone face；The rotating shaft connection of servomotor
Synchronous pulley；Synchronous pulley is driven to rotate by servomotor, hopper turns to blanking of being tumbled when peak is downwardly turned over；
The blanking detection unit includes Hall sensor for countering and magnet steel；The Hall sensor for countering is used for magnetic field signal
Electric signal is converted into, its output signal type is that NPN is normally opened, and the normally opened signals of NPN refer to when Hall sensor for countering does not have
Output line is hanging when sensing magnetic field, is now output as 24V high level；When Hall sensor for countering senses magnetic field signal,
Output line and ground conductive, now export low level；The Hall sensor for countering is fixed on synchronous pulley by bracket-suspending
The place that each magnet steel can pass through during rotation, and magnet steel is less than 1cm with the distance of Hall sensor for countering；The magnet steel according to
With hopper 1:3 quantitative proportion is uniformly fixed on synchronous pulley, for producing magnetic field；The Hall sensor for countering output end
It is connected by Du Pont's line with the photoelectrical coupler input of phototube coupling unit；
The phototube coupling unit includes photoelectrical coupler and its interlock circuit；Photoelectrical coupler is used for blanking detection unit is defeated
The amplitude for going out synchronously is converted into the electric signal that amplitude is 3.3V, the telecommunications of the phototube coupling unit output for the electric signal of 24V
Number it is connected with the external interrupt passage of arm processor unit I/O pins；
The arm processor unit, its selection STM32 chip is used as main control MCU, the electricity for gathering phototube coupling unit output
It is soft with configuration that signal rising edge number of times follows " MODBUS " communications protocol to calculate hopper number of tumbling, by 485 communication modules
Part is communicated；
485 communication module is made up of RS485 communication chips and peripheral circuit, for the same sub-signal for producing main control MCU
Differential signal is converted into be transmitted；
The phototube coupling unit, arm processor unit and 485 communication modules are welded in one piece of PCB；
The touch-screen is MCGS touch-screens, and input is detected by the crop dryer doses that configuration software is worked out and answered in touch-screen
With software, the display directly perceived for blanking doses and the real-time control to detection means；Crop dryer doses inspection software
Content includes the display of blanking amount, dries the calculating display of moisture, dries the calculating display and the derivation of data of expense, and controls
The start and stop of blanking detection unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510854185.7A CN105300089B (en) | 2015-11-27 | 2015-11-27 | A kind of crop dryer blanking amount detecting device based on ARM |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510854185.7A CN105300089B (en) | 2015-11-27 | 2015-11-27 | A kind of crop dryer blanking amount detecting device based on ARM |
Publications (2)
| Publication Number | Publication Date |
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| CN105300089A CN105300089A (en) | 2016-02-03 |
| CN105300089B true CN105300089B (en) | 2017-06-30 |
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| CN201510854185.7A Active CN105300089B (en) | 2015-11-27 | 2015-11-27 | A kind of crop dryer blanking amount detecting device based on ARM |
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| CN112503913B (en) * | 2020-11-05 | 2021-11-23 | 合肥三伍机械有限公司 | Grain drying structure |
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| ES2092926B1 (en) * | 1992-10-15 | 1998-02-16 | Bocharan Merino Fernando | INSTALLATION OF CEREAL DRYING AND DRYING OF PLASTERS / PLASTERS. |
| DE102005061288A1 (en) * | 2005-12-20 | 2007-06-21 | Bühler AG | Drying rice comprises heating the precleaned rice in a fluidized bed, drying the rice in several temperature stages, and cooling the rice in a container by blowing with air or spraying with water |
| CN103211008A (en) * | 2013-04-23 | 2013-07-24 | 安徽世龙电子技术有限公司 | On-line resistance-type grain moisture tester and control method thereof |
| CN104729276B (en) * | 2015-04-08 | 2016-09-14 | 张立志 | Grain drying tower intelligent energy-saving control system |
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