CN1702438A - Corn mass flow sensor - Google Patents
Corn mass flow sensor Download PDFInfo
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- CN1702438A CN1702438A CN 200510027054 CN200510027054A CN1702438A CN 1702438 A CN1702438 A CN 1702438A CN 200510027054 CN200510027054 CN 200510027054 CN 200510027054 A CN200510027054 A CN 200510027054A CN 1702438 A CN1702438 A CN 1702438A
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Abstract
A corn mass flow sensor belongs to technical sphere of sensor, which comprises measuring fingers, mounting plate, door shape supporting structure, elastic element, dynamic damping module, signal transmission module, crust, flange plate, cover board, connector socket, strain foil and rubber shim, wherein, said measuring fingers are connected with one side of elastic element fixed to the crust on another side through subpanel and fixed mount; said crust top is located with cover board and connector socket fixed on it and the bottom is flange plate with the rubber shim under it; said strain gage bridge sticks to the elastic element around which dynamic damping module is fixed.
Description
Technical field
The present invention relates to a kind of sensor, particularly a kind of corn mass flow sensor that can be installed in real-time measurement grain yield on the united reaper.Belong to sensor technical field.
Background technology
Accurate agricultural is the most attractive present frontier nature research of agricultural science field.In the accurate agricultural technical system, accurately obtaining crop yield distributed intelligence survey product is an important link, and one of indispensable instrument of realizing this link is exactly a corn mass flow sensor.This sensor is installed on the united reaper, can when gathering in operation, gather by harvester cereals crop (as wheat, paddy rice etc.) mass rate information in real time, and cooperate with GPS receiver module, harvesting speed pickup etc. and to depict field-crop output distributed intelligence figure, finish the data acquisition task in the accurate results link, provide the prerequisite basis for implementing Precision Farming.This sensor operating environment is abominable, and the vibration of foundation that harvester produces is disturbed big, and working environment humidity, range of temperature are big, and have serious pollution source such as dust.Therefore, require as seen according to operating environment and job task, corn mass flow sensor both should have higher sensitivity and precision, should have very strong antijamming capability again.
At present both at home and abroad the corn mass flow online in real time detect principle mainly exist weigh, positive displacement, gamma-rays and impulse type etc., but the front three exists basically and influenced greatly by cereal density, need make drawbacks such as more change to existing united reaper structure during installation.Particularly the gamma-rays formula also requires to be equipped with protective device, and potential radiocontamination.
Find by prior art documents, China Patent No. is 97233380.0, utility model title: " cantilevered flow sensor ", this patent has 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 mass rate that united reaper is measured cereal.
Summary of the invention
The objective of the invention is to have designed a kind of corn mass flow sensor at above-mentioned deficiency of the prior art.Make it be installed on the united reaper easily, compact conformation, precision is higher, can in the operation process of harvester, measure the crop yield data in each regional area of big Tanaka in real time, thereby satisfy the requirement that accurate agricultural is accurately gathered land for growing field crops crop yield distributed intelligence, so that provide the follow-up decision foundation for accurate agricultural.
The present invention is achieved by the following technical solutions, the present invention includes: measure finger, installing plate, " door " font fixed mount, flexible member, power weakening module, signal transmitting module, shell, flanged plate, cover plate, connector socket, foil gauge and rubber sheet gasket.Its annexation is: measure finger and link together by the end of installing plate with " door " font fixed mount and flexible member, an other end of flexible member is fixed on the shell.The top of shell is cover plate and fixing connector socket on the cover board, and the bottom is a flanged plate, and rubber sheet gasket is below flanged plate.Strain gauge bridge is attached on the flexible member, and power weakening module is fixed on around the flexible member.In the output signal entering signal transmitting module of strain gauge bridge.
When cereal-granules under the effect of harvester scraper lifting machine, can approximate periodically impinge upon and measure finger, impulsive force causes resistance strain gage generation deformation by measuring to point to be passed to successively on the Flexible element, thereby perception impulsive force signal, through signal transmitting module conversion process, export from connector socket with the form of normalized current signal at last again.The top of shell is cover plate and fixing on the cover board connector socket, and the bottom of shell is to be used for sensor is fixed to flanged plate on the united reaper frame, also posts rubber sheet gasket below the flanged plate.Power weakening module is surrounded and is fixed on around the flexible member, to resist the interference to sensor of united reaper frame vibration and ground, farmland inequality.
Dynamometry elastic element structure compactness of the present invention, the sensor one-piece construction is simple, is installed in the exit of cereal lifter on united reaper, and is very convenient, almost to it goes without doing any modification of existing united reaper structure.Dynamometry flexible member perception cereal acts on the impulsive force of measuring on the finger, and is not subjected to the influence of the concrete percussive action point change in location of cereal.Transmitting module can be realized the automatic compensation of temperature variation, and has taked safeguard measures such as waterproof and dustproof, has improved the sensor global reliability.Power weakening module has been installed on the dynamometry flexible member, has improved the elastic sensing element damping ratio, reduced the basic strong vibration of united reaper frame effectively and disturbed.When the present invention is installed on the united reaper, can in crops harvesting process, measure the space distribution information of crop yield in the farmland real-time and accurately, can satisfy in the accurate agricultural output space distribution information Testing requirement.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is vertical section structure figure of the present invention
Fig. 3 is a measuring principle synoptic diagram of the present invention
Among the figure: 1. measure finger; 2. installing plate; 3. " door " font fixed mount; 4. flexible member; 5. power weakening module; 6. signal transmitting module; 7. shell; 8. flanged plate; 9. cover plate; 10. connector socket; 11. foil gauge; 12. rubber sheet gasket.
Embodiment
As shown in Figure 1 and Figure 2, the present invention includes: measure finger 1, installing plate 2, " door " font fixed mount 3, dynamometry flexible member 4, power weakening module 5, front end signal transmitting module 6, shell 7, flanged plate 8, cover plate 9, connector socket 10, strain gauge bridge 11 and rubber blanket 12.Wherein, measure finger 1 and link together by installing plate 2 and the end of " door " font fixed mount 3 with dynamometry flexible member 4, an other end of dynamometry flexible member 4 is fixed on the shell 7.The top of shell 7 is cover plate 9 and the connector socket 10 that is fixed on the cover plate 9, and the bottom is a flanged plate 8, and rubber blanket 12 is between flanged plate 8 and the united reaper frame.Also be equipped with front end signal transmitting module 6 in the shell 7.Strain gauge bridge 11 sticks on the dynamometry flexible member 4, power weakening module 5 surround be fixed on dynamometry flexible member 4 around.
Flexible member 4 adopts diplopore parallel girder structure.Power weakening module 5 is surrounded and is fixed on around the flexible member 4.Signal transmitting module 6 is accepted the electric bridge output signal, exports from connector socket 10 with the form of 4～20mA normalized current signal.
As shown in Figure 3, when the present invention uses, be fixed on the grain hoister exit at harvester granary top by shell 7, flanged plate 8 and rubber sheet gasket 12.The cereals crops are through after the united reaper threshing, link such as cleaning, under the effect of cereal kernel hoister, impact and measured finger at 1 o'clock, impulsive force is passed on the flexible member 4 successively, and record the impulsive force signal of cereal, and be not subjected to the influence of the concrete percussive action point change in location of cereal by the strain gauge bridge of pasting thereon 11.The running speed substantially constant of lifter, and can be measured easily.Cereal-granules along continuous straight runs basically acts on the measurement finger 1, and the horizontal direction speed vanishing of collision back cereal-granules freely falls in the silo of united reaper then.Therefore can know according to theorem of impulse Ft=mv that there are proportionate relationship in the size of impulsive force F and moment impact between the cereal-granules quality of measuring on the finger 1, also be q=kF, q is the cereal instantaneous mass flow, and k can determine by the transducer calibration process.
In the practical application, the mean mass flux in the short time period just can satisfy the demand of accurate agricultural, so, corn mass flow
The distortion of foil gauge 11 enters 6 processing of signal transmitting module after being converted into electric signal output, outputs to the subsequent acquisition instrument with 4 ~ 20mA normalized current signal at last.
Like this, parameters (being used for obtaining the harvesting area in the subrange) such as the latitude and longitude coordinates of cooperation GPS receiver module output and harvesting speed, grain cutting width just can calculate the output space distribution information of crops in the farmland immediately.
Claims (4)
1. grain yield sensor, comprise: measure finger (1), installing plate (2), " door " font fixed mount (3), shell (7), flanged plate (8), cover plate (9), connector socket (10), foil gauge (11) and rubber sheet gasket (12), it is characterized in that, also comprise: flexible member (4), power weakening module (5), signal transmitting module (6), measurement finger (1) links together by an end of installing plate (2) and " door " font fixed mount (3) and flexible member (4), an other end of flexible member (4) is fixed on the shell (7), the top of shell (7) is cover plate (9) and is fixed on connector socket (10) on the cover plate (9), the bottom is flanged plate (8), rubber sheet gasket (12) is attached on the flanged plate (8), also has signal transmitting module (6) in the shell (7), foil gauge (11) is attached on the flexible member (4), and power weakening module (5) is fixed on the flexible member (4).
2. grain yield sensor according to claim 1 is characterized in that, flexible member (4) adopts diplopore parallel girder structure.
3. grain yield sensor according to claim 1 is characterized in that, power weakening module (5) is surrounded and is fixed on flexible member (4) on every side.
4. grain yield sensor according to claim 1 is characterized in that, signal transmitting module (6) is accepted the electric bridge output signal, exports from connector socket (10) with the form of 4～20mA normalized current signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100270548A CN1332184C (en) | 2005-06-23 | 2005-06-23 | Corn mass flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100270548A CN1332184C (en) | 2005-06-23 | 2005-06-23 | Corn mass flow sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1702438A true CN1702438A (en) | 2005-11-30 |
| CN1332184C CN1332184C (en) | 2007-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100270548A Expired - Fee Related CN1332184C (en) | 2005-06-23 | 2005-06-23 | Corn mass flow sensor |
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| Country | Link |
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| CN (1) | CN1332184C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288239A (en) * | 2011-05-11 | 2011-12-21 | 江苏大学 | Grain quality and flow rate measuring device |
| CN107091663A (en) * | 2017-07-03 | 2017-08-25 | 南京农业大学 | A kind of the real-time of combined seed and fertilizer drill broadcasts amount detecting device and detection method |
| CN108732208A (en) * | 2018-05-22 | 2018-11-02 | 上海交通大学 | A kind of Crop moisture sensor and the method for measuring grain moisture |
| CN109277181A (en) * | 2017-12-19 | 2019-01-29 | 上海云统创申智能科技有限公司 | A kind of intelligent hammer mill with remote monitoring function |
| CN109277180A (en) * | 2017-12-19 | 2019-01-29 | 上海云统创申智能科技有限公司 | A kind of intelligent vertical-spindle hammer crusher with remote monitoring function |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441101A (en) * | 1980-02-22 | 1984-04-03 | Sed Systems Inc. | Grain sensor |
| CA1155879A (en) * | 1980-06-17 | 1983-10-25 | David I. M. Elder | Weighing device for fluent material |
| US5343761A (en) * | 1991-06-17 | 1994-09-06 | Allen Myers | Method and apparatus for measuring grain mass flow rate in harvesters |
| DE4133976A1 (en) * | 1991-10-14 | 1993-04-15 | Claas Ohg | CORE CURRENT MEASURING DEVICE, ESPECIALLY FOR HARVESTING MACHINES |
-
2005
- 2005-06-23 CN CNB2005100270548A patent/CN1332184C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288239A (en) * | 2011-05-11 | 2011-12-21 | 江苏大学 | Grain quality and flow rate measuring device |
| CN102288239B (en) * | 2011-05-11 | 2013-04-17 | 江苏大学 | Grain quality and flow rate measuring device |
| CN107091663A (en) * | 2017-07-03 | 2017-08-25 | 南京农业大学 | A kind of the real-time of combined seed and fertilizer drill broadcasts amount detecting device and detection method |
| CN109277181A (en) * | 2017-12-19 | 2019-01-29 | 上海云统创申智能科技有限公司 | A kind of intelligent hammer mill with remote monitoring function |
| CN109277180A (en) * | 2017-12-19 | 2019-01-29 | 上海云统创申智能科技有限公司 | A kind of intelligent vertical-spindle hammer crusher with remote monitoring function |
| CN108732208A (en) * | 2018-05-22 | 2018-11-02 | 上海交通大学 | A kind of Crop moisture sensor and the method for measuring grain moisture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1332184C (en) | 2007-08-15 |
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Granted publication date: 20070815 Termination date: 20100623 |