CN1332184C - Corn mass flow sensor - Google Patents
Corn mass flow sensor Download PDFInfo
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- CN1332184C CN1332184C CNB2005100270548A CN200510027054A CN1332184C CN 1332184 C CN1332184 C CN 1332184C CN B2005100270548 A CNB2005100270548 A CN B2005100270548A CN 200510027054 A CN200510027054 A CN 200510027054A CN 1332184 C CN1332184 C CN 1332184C
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Abstract
The present invention relates to a corn mass flow sensor which belongs to the technical field of the sensor. The present invention comprises a measurement finger, an installation plate, an N-shaped fixed frame, an elastic element, a power vibration damping module, a signal transmission module, an outer shell, a flange, a cover plate, a connector socket, a strain sheet and a rubber shim, wherein the measurement finger is connected with one end of the elastic element together through the installation plate and the N-shaped fixed frame. The other end of the elastic element is fixed to the outer shell, and the top of the outer shell is provided with the cover plate and the connector socket fixed to the cover plate. The bottom is provided with the flange, and the rubber shim is cushioned at the lower side of the flange. A strain sheet electric bridge is pasted on the elastic element, and the power vibration damping module is fixed to the circumference of the elastic element. The present invention has the advantages of compact structure, high precision, strong anti-interference capability and convenient installation and use, can be arranged on a combine harvester and accurately measures the information on the mass flow of farm crops in a field in on-line and real-time modes.
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.
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 (3)
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), power weakening module (5) is fixed on the flexible member (4), and flexible member (4) adopts diplopore parallel girder structure.
2. 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.
3. 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 CN1702438A (en) | 2005-11-30 |
| CN1332184C true 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN1332184C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288239B (en) * | 2011-05-11 | 2013-04-17 | 江苏大学 | Grain quality and flow rate measuring device |
| CN107091663B (en) * | 2017-07-03 | 2023-05-30 | 南京农业大学 | Real-time seeding amount detection device and method of fertilizing and seeding machine |
| 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 |
| 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 |
| CN108732208B (en) * | 2018-05-22 | 2020-11-06 | 上海交通大学 | Grain moisture sensor and method for measuring grain moisture |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4407380A (en) * | 1980-06-17 | 1983-10-04 | Elder David I M | Weighing device for fluent material |
| US4441101A (en) * | 1980-02-22 | 1984-04-03 | Sed Systems Inc. | Grain sensor |
| US5312299A (en) * | 1991-10-14 | 1994-05-17 | Claas Ohg Beschrankt Haftende Offene Handelsgesellschaft | Grain flow measuring device, in particular for harvesters |
| US5561250A (en) * | 1991-06-17 | 1996-10-01 | Myers; Allen | Method and apparatus for measuring grain mass flow rate in harvesters |
-
2005
- 2005-06-23 CN CNB2005100270548A patent/CN1332184C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441101A (en) * | 1980-02-22 | 1984-04-03 | Sed Systems Inc. | Grain sensor |
| US4407380A (en) * | 1980-06-17 | 1983-10-04 | Elder David I M | Weighing device for fluent material |
| US5561250A (en) * | 1991-06-17 | 1996-10-01 | Myers; Allen | Method and apparatus for measuring grain mass flow rate in harvesters |
| US5312299A (en) * | 1991-10-14 | 1994-05-17 | Claas Ohg Beschrankt Haftende Offene Handelsgesellschaft | Grain flow measuring device, in particular for harvesters |
Non-Patent Citations (6)
| Title |
|---|
| 冲量式谷物流量传感器性能实验研究 陈树人、张文革、李相平、李民赞、黄季平，农业机械学报，第36卷第2期 2005 * |
| 冲量法谷物流量测量系统的试验研究 孙宇瑞、汪懋华、马道坤、黄季平，农业机械学报，第32卷第4期 2001 * |
| 冲量法谷物流量测量系统的试验研究 孙宇瑞、汪懋华、马道坤、黄季平，农业机械学报，第32卷第4期 2001;冲量式谷物流量传感器性能实验研究 陈树人、张文革、李相平、李民赞、黄季平，农业机械学报，第36卷第2期 2005;精准农业智能测产系统关键技术及仪器的研究 孙志强，上海交通大学硕士论文 2003;联合收割机产量传感器的信号处理 张凤川、张启峻、周晓云、刘成良，中国农机化，第04期 2004;双孔平行梁弹性元件力学分析 姜招喜、王德庆、杨森平，传感器技术，第5期 1993 * |
| 双孔平行梁弹性元件力学分析 姜招喜、王德庆、杨森平，传感器技术，第5期 1993 * |
| 精准农业智能测产系统关键技术及仪器的研究 孙志强，上海交通大学硕士论文 2003 * |
| 联合收割机产量传感器的信号处理 张凤川、张启峻、周晓云、刘成良，中国农机化，第04期 2004 * |
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| CN1702438A (en) | 2005-11-30 |
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Granted publication date: 20070815 Termination date: 20100623 |