Digitized wheat lodging-resistant experiment wind tunnel

Abstract

The invention provides a digitized wheat lodging-resistant experiment wind tunnel. The wind tunnel comprises four units of a wind tunnel body unit, a wind speed control unit, a wind speed determination unit, and an image automatic acquisition unit. The structural characteristics are that the wind tunnel body is integrally installed on a steel frame welded by rectangular steel tubes, an upper wall and side walls are formed by bending color plates which are filled with foam materials inside, two ends of the tunnel body and a front part and a rear part of a contraction section are provided with n-shaped steel frames, a lower layer of a baseplate is a wood board, and an upper layer is a galvanized iron sheet. Axial flow fans are installed on a frame which is welded by angle iron through screws, the fans being divided into three layers and each layer being provided with four fans. Width ratio of the tunnel bodies between an expansion section and the contraction section is 1 to 0.54. A rectification section is installed with barriers made of wood boards. An experiment section is 2.0 m by height, 1.3 m by width, and 7.0 m by length, and the top is installed with fluorescent lamps, and toughened glass observation windows are disposed on central positions of the side walls. Wind speed of the wind tunnel is 0-16 m / s, and is continuously adjustable, and the wind tunnel simulates wind gust velocity through adjusting time of acceleration and deceleration of the fans, so the wind tunnel can satisfy study of wheat wind dynamics and lodging-resistant wind speed research.

Description

Technical field [0001] The invention relates to a low-speed special wind tunnel capable of simulating the micro-scale natural wind speed change near the ground in a wheat field, and studying the wind dynamics characteristics of wheat plants and groups and the lodging resistance wind speed. Background technique [0002] Lodging is a phenomenon caused by internal and external factors such as wind, rain, and plant stalk characteristics that make the plant stalk shift from a natural upright state to a permanent dislocation. It is one of the most important limiting factors for high, stable and super-high yields of wheat. Lodging can occur in wheat at various stages from flowering to maturity. Lodging not only greatly reduces grain yield, but also seriously reduces grain quality due to the production of toxins due to the breeding of pathogens. At the same time, it also brings many difficulties to mechanical harvesting. According to relevant statistics, the grain loss caused by lod...

AI Technical Summary

Problems solved by technology

Existing large-scale wind tunnels are generally very expensive and consume a lot of power, while the general miniature or portable wind tunnels are too small, with a cross-sectional area of ​​only 0.16 or 0.20 square meters. It is a wind tunnel product or patent that is durable and can simulate the micro-scale wind speed changes near the ground in the wheat field, and can be used for the research of wheat plant and group wind dynamics characteristics and lodging resistance wind speed

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