CN101216337A - Cereal stream flow real time experiment measuring equipment and method - Google Patents
Cereal stream flow real time experiment measuring equipment and method Download PDFInfo
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- CN101216337A CN101216337A CNA2007101923979A CN200710192397A CN101216337A CN 101216337 A CN101216337 A CN 101216337A CN A2007101923979 A CNA2007101923979 A CN A2007101923979A CN 200710192397 A CN200710192397 A CN 200710192397A CN 101216337 A CN101216337 A CN 101216337A
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Abstract
The invention discloses a real-time test measurement device for grain flow rate and a method thereof. A fixed bracket is disposed above the end of a conveyer belt, and a laser sensor with front side toward a material to be measured is installed on the fixed bracket; the output end of the laser sensor is connected with a monitoring and controlling system, a speed sensor is installed on the main shaft of the conveyer belt, the output end of the speed sensor is connected with the input end of the monitoring and controlling system, the measured distance from the laser sensor to the conveyer belt is a constant value L1, the distance from the material to be measured to the laser head by the laser sensor is L2, then the thickness of the measured material is L1-L2, the distance between the baffles at two sides of the conveyer belt is H, the diameter of the transmission shaft of the conveyer belt is D, the rotation speed is Omega, the thickness of the conveyer belt is l, the unit volumetric weight of the measured material is Rho, then the instantaneous flow rate of the material to be measured passing through the conveyer belt is Q=(Pi/360)H is multiplied by Omega is multiplied by Rho(L1-L2)(D+l)*10<-9>. The inventive device has the advantages of simple structure, high measurement accuracy, high anti-jamming capability, convenient installation and service, stable performance, no radiation, no harm to operators and environment, and easy debugging and maintenance with simple and accurate measuring method.
Description
Technical field
The present invention relates to a kind of employing laser optical method to cereal stream flow real time experiment measuring equipment and method; can be used for various united reapers, grain processing and grain storage carrier, can carry out online in real time to the flow in the continuous conveying process of material seeds such as paddy rice, wheat, rape, soybean, corn or other bulk solids and accurately measure.
Background technology
" precision agriculture " is to utilize infotech to manage a kind of management philosophy and the measure in farmland.Grain yield is to need one of most important information of obtaining in the precision agriculture, and it can directly reflect the influence of the information (as soil property, fertilizer efficiency utilization, moisture, insect pest etc.) in farmland to grain yield.Peasant household can determine the input of chemical fertilizer, agricultural chemicals etc. according to the crop actual needs thus, thereby reaches the purpose of saving cost, raising output, reducing environmental pollution.Obtain crops cell production information, setting up the cell production spatial distribution map is the starting point of implementing meticulous farming, also is to realize that the science regulation and control drop into and formulate the key of management decision measure in the crop production process.The accurate measurement of cereal cell production is the key factor of output monitoring, and the cell production data are the main foundations that generate output figure, so cereal flow transducer is the core in the accurate agricultural system for measuring yield.According to operating environment and job task requirement, cereal flow transducer both should have higher sensitivity and precision, should have very strong antijamming capability again.
At present domestic and international existing cereal flow online in real time detects principle and mainly contains three kinds of volume streaming, gamma-rays and quality streamings.Volume streaming cereal flow transducer is directly measured the volumetric flow rate of cereal, and its measurement result is subjected to the influence of grain measure density, water percentage, machine tip degree, probe pollution etc., needs often to clean and demarcate, and measuring accuracy is not high, performance is unstable.Gamma-rays cereal flow transducer measuring accuracy is higher, but radiation has certain harm, use cost higher to operating personnel and environment, has hindered large scale application to a certain extent.That the impulse type corn mass flow sensor has is easy for installation, do not have advantages such as potentially contaminated, but influenced by the multiple of factors such as variation of stated accuracy, united reaper pace, grain cutting width change, cereal flows stability, cereal moisture percentage and density, measuring accuracy is not high.
Find by prior art documents, cantilevered flow sensor (the patent No.: 97233380.0) adopted the semi-girder mode to realize the flow measurement of convection cell, this sensor is fit to measure the high temperature fluid of high viscosity, low flow velocity, mainly by formed by the arm of force and housing and the foil gauge that is attached to inner walls.This utility model is mainly measured fluid flow by the housing distortion that caused by the arm of force, is subjected to the interference of extraneous vibration easily and causes measuring accuracy to reduce, and therefore, the sensor described in this patent can't be applied to the flow that united reaper is measured cereal.
Corn mass flow sensor (number of patent application: 200510027054.8) adopt measurement finger, " door " font fixed mount, flexible member, signal transmitting mould etc. to realize the detection of corn mass flow, though dynamic weakening module, but measurement essence based on impulse type, still responsive to vibration, and influenced by the multiple of factors such as variation of stability, cereal moisture percentage and density that stated accuracy, cereal flow, measuring accuracy is not high, can not get widespread use on united reaper.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of existing cereal flow measuring device, a kind of cereal stream flow real time experiment measuring equipment is provided, adopt laser range sensor to carry out the cereal flow online in real time and measure, this device is little to jolting, shake, arrange the grain interruption and impacting the error effect that brings of machine.
Another object of the present invention is to provide a kind of cereal stream flow real time experiment measuring method, but the on-line determination cereal flow.
The technical scheme that apparatus of the present invention adopt is: comprise motor, conveying device and flow detector, one feeding screw feeder is arranged at the bottom that conveying device is included in loading head, the discharging opening end of feeding screw feeder links to each other with vertical elevator, vertical elevator outlet is provided with the level screw feeder of putting out cereal, and horizontal conveying belt is positioned at the screw feeder below and have overlapping of putting out cereal; Above put out cereal screw feeder end, conveying belt, strickle is housed, the laser sensor facing to the determinand material just is housed on the terminal upper fixed support of conveying belt; The output terminal of laser sensor links to each other with control system with monitoring, frequency control motor is fixed on the frame, the control line of frequency control motor links to each other with the input end of control system with monitoring, on the main shaft of conveying belt speed probe is housed, and output terminal links to each other with the control system input end with monitoring.
The technical scheme that the inventive method adopts is: can record laser sensor by monitoring and control system is definite value to the distance of conveying belt, is designated as L
1, unit is a millimeter; Laser sensor is measured the distance L that determinand is expected laser head
2, unit is a millimeter; Then the bed thickness of material to be measured is L
1-L
2, the distance between two side shields of conveying belt is H, and unit is a millimeter, and the diameter of the transmission shaft of conveying belt is D, the unit millimeter, monitoring records with control system carries the tape spool rotating speed to be
Unit is rev/min, and conveying belt thickness is l, and unit is a millimeter, and the unit weight of material to be measured is ρ in the unit volume, and unit is a kilogram/cubic meter, and then the instantaneous delivery of the material to be measured by conveying belt is:
Unit is a Kilograms Per Second, and data are recorded in monitoring and the control system, also can calculate the total amount of cereal in certain period by integration.
Apparatus of the present invention are simple in structure, and measuring accuracy height, antijamming capability are strong, easy to install, and stable performance is radiationless, can not produce harm to operating personnel and environment, and debugging and maintenance are easily.Assay method is simply accurate.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is apparatus of the present invention structural representations
Fig. 2 is the partial enlarged view of flow detector among Fig. 1,
Fig. 3 is the right view of Fig. 2.
Among the figure: 1. support, 2. laser sensor, 3. speed probe, 4. strickle, 401. scraper plates, 402. torsion springs, 403. backing pin, 5. put out cereal screw feeder, 7. elevator of conveying belt 6., 8. monitor and control system, 9. transmission case, 10. loading head, 11. the feeding screw feeder, 12. frequency control motors, 13. frames, 14. the conveying belt baffle plate, 15. materials to be measured, 16. speed probes.
Embodiment
Fig. 1 is the cereal stream flow real time experiment measuring equipment structural representation, one feeding screw feeder 11 is arranged at loading head 10 bottoms, transmission case 9 is installed in feeding screw feeder 11 1 ends, the discharging opening end of feeding screw feeder 11 links to each other with vertical elevator 7, vertical elevator 7 outlets are provided with level screw feeder 6 places that put out cereal, horizontal conveying belt 5 is positioned at screw feeder 6 belows of putting out cereal, and has overlappingly, and strickle 4 is equipped with in screw feeder 6 ends of putting out cereal, conveying belt 5 tops.Speed probe 3 is installed on the driving shaft of conveying belt 5, and conveying belt 5 is high friction force rubber synchronous belt, in the both sides of conveying belt 5 conveying belt baffle plate 14 is installed, and baffle plate 14 is the less polyfluortetraethylene plate of friction.On conveying belt 5 terminal upper fixed supports 1, laser sensor 2 is housed, and being right against material 15 to be measured, output terminal and monitoring links to each other with control system 8, frequency control motor 12 is fixed on the frame 13, its control line links to each other with control system 8 input ends with monitoring, on conveying belt 5 main shafts, high precision speed probe 16 is housed, and its output terminal links to each other with control system 8 input ends with monitoring.
The flow detector structure comprises conveying belt 5, strickle 4, laser sensor 2, speed probe 16 etc., and as shown in Figure 2, an even distribution 2-4 laser sensor 2 is got its mean value during calculating on the transmission shaft direction of conveying belt 5.Conveying belt 5 is high friction force rubber synchronous belt, reduces skidding of conveying belt and belt wheel, increases the friction force between band and the material, and conveying belt baffle plate 14 is the less polyfluortetraethylene plate that rubs, can reduce and material between friction force.As shown in Figure 3, a torsion spring 402 is housed on the installation shaft of strickle 4, scraper plate 401 lower ends press on material 15 to be measured, and the upper end connects the installation shaft of strickle 4.When the flow of material 15 to be measured changed, the acting force of torsion spring 402 can be regulated automatically, guaranteed functional reliability, can adjust the pretightning force of torsion spring 402 by backing pin 403, can change the pressure of scraper plate 401, guaranteed the adaptability to different material.
If laser sensor is a definite value to the distance of cereal conveying belt, be designated as L
1, unit is a millimeter; Laser sensor is measured the distance L of cereal to laser head
2, unit is a millimeter; Then the bed thickness of cereal is L
1-L
2, the distance between conveying belt two side shields is H, and unit is a millimeter, and the diameter of conveying belt transmission shaft is D, the unit millimeter, rotating speed is
Unit is rev/min, and conveying belt thickness is l, and unit is a millimeter, and the unit weight of cereal is ρ in the unit volume, and unit be a kilogram/cubic meter, then passes through the instantaneous delivery of conveying belt cereal,
Unit is a Kilograms Per Second.
Claims (4)
1. cereal stream flow real time experiment measuring equipment, comprise motor, conveying device and flow detector, it is characterized in that: a feeding screw feeder (11) is arranged at the bottom that conveying device is included in loading head (10), the discharging opening end of feeding screw feeder (11) links to each other with vertical elevator (7), vertical elevator (7) outlet is provided with the level screw feeder (6) of putting out cereal, and horizontal conveying belt (5) is positioned at the screw feeder of putting out cereal (6) below and has overlapping; Strickle (4) is equipped with in, conveying belt (5) top terminal at the screw feeder of putting out cereal (6), and the laser sensor (2) facing to determinand material (15) just is housed on the terminal upper fixed support of conveying belt (5) (1); The output terminal of laser sensor (2) links to each other with control system (8) with monitoring, frequency control motor (12) is fixed on the frame (13), the control line of frequency control motor (12) links to each other with the input end of monitoring with control system (8), speed probe (16) is housed on the main shaft of conveying belt (5), and output terminal links to each other with control system (8) input end with monitoring.
2. according to claims 1 described cereal stream flow real time experiment measuring equipment, it is characterized in that: a torsion spring (402) is housed on the installation shaft of strickle (4), scraper plate (401) lower end presses on material to be measured (15), and the upper end connects the installation shaft of strickle (4).
3. according to claims 1 described cereal stream flow real time experiment measuring equipment, it is characterized in that: an even distribution 2-4 laser sensor (2) on the transmission shaft direction of conveying belt (5).
4. cereal stream flow real time experiment measuring method is characterized in that: can record laser sensor (2) by monitoring and control system (8) is definite value to the distance of conveying belt (5), is designated as L
1, unit is a millimeter; Laser sensor (2) is measured the distance L of material to be measured (15) to laser head
2, unit is a millimeter; The bed thickness of material then to be measured (15) is L
1-L
2, the distance between two side shields (14) of conveying belt (5) is H, and unit is a millimeter, and the diameter of the transmission shaft of conveying belt (5) is D, the unit millimeter, monitoring records the rotating speed of carrying tape spool with control system (8)
Unit is rev/min, and conveying belt (5) thickness is l, and unit is a millimeter, and the unit weight of material to be measured (15) is ρ in the unit volume, and unit is a kilogram/cubic meter, and then the instantaneous delivery of the material to be measured (15) by conveying belt (5) is:
Unit is a Kilograms Per Second, and data are recorded in monitoring and the control system (8), also can calculate the total amount of cereal in certain period by integration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101923979A CN101216337A (en) | 2007-12-26 | 2007-12-26 | Cereal stream flow real time experiment measuring equipment and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101923979A CN101216337A (en) | 2007-12-26 | 2007-12-26 | Cereal stream flow real time experiment measuring equipment and method |
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| CN101216337A true CN101216337A (en) | 2008-07-09 |
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| CNA2007101923979A Pending CN101216337A (en) | 2007-12-26 | 2007-12-26 | Cereal stream flow real time experiment measuring equipment and method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322922A (en) * | 2011-05-30 | 2012-01-18 | 江苏大学 | A kind of cereal flow transducer testing table |
| CN103335680A (en) * | 2013-05-28 | 2013-10-02 | 中冶南方工程技术有限公司 | Flow measurement method and system of solid material conveying |
| CN104019857A (en) * | 2014-06-21 | 2014-09-03 | 辽宁工程技术大学 | System and method for measuring discharge volume of shield tunneling machine |
| CN104132699A (en) * | 2014-07-24 | 2014-11-05 | 武汉中原电子集团有限公司 | Laser scanning type bulk material flow detection and distribution error elimination method |
| CN104931107A (en) * | 2015-06-19 | 2015-09-23 | 安徽省农业科学院农业工程研究所 | Capacitance type wheat harvest yield real-time measuring method and device |
| CN106441236A (en) * | 2016-09-28 | 2017-02-22 | 泰富重工制造有限公司 | Material throwing trajectory testing system and material throwing trajectory testing method |
| CN106679717A (en) * | 2016-08-28 | 2017-05-17 | 山东北斗华宸导航技术有限公司 | Beidou single antenna-based crop yield and humidity distribution measurement device and yield and humidity measuring measurement thereof |
| CN106813755A (en) * | 2015-11-30 | 2017-06-09 | 中国科学院沈阳自动化研究所 | A kind of cereal flow test experience platform |
| CN114600606A (en) * | 2022-03-04 | 2022-06-10 | 江苏大学 | Light and simple intelligent fertilizer applicator and control system and method thereof |
-
2007
- 2007-12-26 CN CNA2007101923979A patent/CN101216337A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322922A (en) * | 2011-05-30 | 2012-01-18 | 江苏大学 | A kind of cereal flow transducer testing table |
| CN102322922B (en) * | 2011-05-30 | 2013-05-08 | 江苏大学 | Grain flow sensor test bench |
| CN103335680A (en) * | 2013-05-28 | 2013-10-02 | 中冶南方工程技术有限公司 | Flow measurement method and system of solid material conveying |
| CN104019857A (en) * | 2014-06-21 | 2014-09-03 | 辽宁工程技术大学 | System and method for measuring discharge volume of shield tunneling machine |
| CN104132699B (en) * | 2014-07-24 | 2017-08-25 | 武汉中原电子集团有限公司 | A kind of laser scan type bulk material flow detection and distribution error removing method |
| CN104132699A (en) * | 2014-07-24 | 2014-11-05 | 武汉中原电子集团有限公司 | Laser scanning type bulk material flow detection and distribution error elimination method |
| CN104931107A (en) * | 2015-06-19 | 2015-09-23 | 安徽省农业科学院农业工程研究所 | Capacitance type wheat harvest yield real-time measuring method and device |
| CN106813755A (en) * | 2015-11-30 | 2017-06-09 | 中国科学院沈阳自动化研究所 | A kind of cereal flow test experience platform |
| CN106813755B (en) * | 2015-11-30 | 2023-11-28 | 中国科学院沈阳自动化研究所 | Cereal flow detection experiment platform |
| CN106679717A (en) * | 2016-08-28 | 2017-05-17 | 山东北斗华宸导航技术有限公司 | Beidou single antenna-based crop yield and humidity distribution measurement device and yield and humidity measuring measurement thereof |
| CN106441236A (en) * | 2016-09-28 | 2017-02-22 | 泰富重工制造有限公司 | Material throwing trajectory testing system and material throwing trajectory testing method |
| CN106441236B (en) * | 2016-09-28 | 2019-12-13 | 泰富重工制造有限公司 | Material throwing track testing system and method |
| CN114600606A (en) * | 2022-03-04 | 2022-06-10 | 江苏大学 | Light and simple intelligent fertilizer applicator and control system and method thereof |
| CN114600606B (en) * | 2022-03-04 | 2023-01-17 | 江苏大学 | Light and simple intelligent fertilizer applicator and control system and method thereof |
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