Impulse type cereal flux detection device

A technology for measuring grain flow and yield, which is applied in the direction of volume/mass flow generated by mechanical effects, and fluid flow detected by measuring pressure difference. It can solve the problems of measurement accuracy, poor dynamic response, and complex overall structure, and reduce equipment Cost, improvement of measurement accuracy, effect of ensuring measurement accuracy

Inactive Publication Date: 2009-01-14
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The output signal is small, the linear range is narrow, and the dynamic response is poor
[0006] 2. Since the work of the strain gauge group requires power supply from an external circuit, the overall structure is more complicated
[0007] 3. Differences in device vibration and terrain greatly affect the accuracy of measurement
[0008] 4. The cantilever beam will have a large rebound after the impact of the grain, which will have a great impact on the measurement accuracy

Method used

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  • Impulse type cereal flux detection device
  • Impulse type cereal flux detection device
  • Impulse type cereal flux detection device

Examples

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Embodiment Construction

[0022] Such as figure 1 , 2 Shown, the whole device profile of the present invention is a square box shape, has a grain inlet on the top of the casing 2, and the cone-shaped grain diverter 8 is fixed on the casing 2 inner wall. The upper opening of the guide body 8 is fixed on the casing 2 inner wall, and the lower opening is a grain opening, which helps the grain to concentrate and fall. Fix the shaft 14 directly above the grain deflector 8, such as image 3 As shown, the two ends of the shaft 14 are firmly installed on the wall of the casing 2 through the bearing 16 and the corresponding bearing seat 12, the bearing cover 13 and the fixing screw 15. Four mutually perpendicular blades 4, 5, 6, 7 are fixed on the shaft 14. Wherein the blade 4 is arranged horizontally and its movable end is positioned at the below of the grain inlet. One end of the spring 3 is fixed on the inner wall of the box body 2, and the other end supports the movable end of the blade 4 in the horizon...

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Abstract

The invention relates to an impulse-typed flow yield measuring device of grain, a corn inlet is arranged on the top of a case, a subulate corn flow deflector is fixed on an inner wall of the case, and four mutually vertical vanes are fixed right above the corn flow deflector through a shaft; one end of a spring is fixed on the inner wall of the case, and the other end of the spring supports a movable end of the vane that is arranged at a horizontal position; a cymbal-shaped piezosensor is arranged right under the corn flow deflector, and a piezoelectric ceramic wafer is fixed on the fringe in the bottom of the piezosensor. A compensating piezoelectric ceramic wafer is fixed at a central position in the bottom of a cavity of the piezosensor. The impulse-typed flow yield measuring device of grain has small resilience and high measuring precision, does not need a front-end amplifying circuit, and can conveniently eliminate the influence to the electric charge output of the piezoelectric ceramic wafer that is generated by machine vibration and environmental change.

Description

technical field [0001] The invention relates to an impulse type grain flow yield measuring device, which belongs to the field of agricultural machinery. Background technique [0002] Crop yield is important information that needs to be obtained in precision agriculture. It reflects the impact of farmland soil characteristics, fertilizer use, topographic structure, meteorological factors, irrigation conditions, and Cordyceps infestation on yield. Yield information obtained in real time and the resulting yield map are indispensable information in prescription farming. Grain mass flow sensor is a key core component of crop yield test, and its performance directly affects the accuracy of yield map. [0003] With the help of real-time measurement technology of grain flow, the real-time measurement of grain yield in the field harvesting process of combine harvester can be realized. At present, the positioning accuracy of the agricultural Global Positioning System (GPS) has reach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/34
Inventor 高建民方舒远任宁
Owner JIANGSU UNIV
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