A performance calibration device for combine harvester grain loss sensor

Abstract

The invention discloses a combine harvester grain loss sensor performance calibration device, which includes a support frame, a lifting mechanism, a mobile platform, a seed shattering assembly, a sensor support table, a camera assembly and a control system. The support frame is arranged vertically. The sensor support table and the lifting mechanism are both fixed on the support frame. The lifting mechanism is connected with the mobile platform located above the sensor support table. The mobile platform is equipped with the seed shattering assembly thereon. The camera assembly is mounted on the sensor support table. The control system is connected with the lifting mechanism, the mobile platform, the seed shattering assembly, the sensor support table and the camera assembly separately to control the motion of the mechanisms or assemblies. The device of the invention can be used for a repeatability experiment to calibrate the sensitivity, signal uniformity and other performance of a grain loss sensor of a combine harvester, the design of the sensor is further optimized, and the detection efficiency and work stability of the grain loss sensor of the combine harvester are improved.

Description

technical field [0001] The invention belongs to the design field of a performance calibration device for a grain loss sensor of a combine harvester, and in particular relates to a performance calibration device for a grain loss sensor of a combine harvester. Background technique [0002] At present, combine harvesters mainly use an air sieve type cleaning device composed of a fan and a vibrating screen to separate and clean the harvested grains, straw and other sundries. When the combine harvester is working in the field, it will inevitably cause the harvested grain to be mixed with straw and other sundries, blown out from the side by the airflow generated by the fan at the end of the vibrating screen, and directly thrown to the field to cause losses. At present, some scholars at home and abroad have carried out relevant research on grain loss sensors, but the research on the performance calibration device of grain loss sensors is not mature. Impact signal flaws. Patents C...

AI Technical Summary

Problems solved by technology

When the combine harvester is working in the field, it is inevitable that the harvested grains will be mixed with straw and other sundries, blown out from the side by the airflow generated by the fan at the end of the vibrating screen, and directly thrown to the field to cause losses

At present, some scholars at home and abroad have carried out relevant research on grain loss sensors, but the research on the performance calibration device of grain loss sensors is not mature. Impact Signal Defects

Patents CN103404299A and CN103141214A are typical representatives. It is impossible to judge whether there are double grains hitting the sensor at the same time. The detection efficiency of grain loss is relatively low. A performance calibration device for combine harvester grain loss sensors is essential for improving the efficiency of grain loss detection

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