On-line detection device for working performance of precision seed meter based on electrostatic sensor

Abstract

The invention discloses a precision seed sowing device work performance on-line detection device based on an electrostatic sensor and the precision seed sowing device work performance on-line detection device belongs to the technical field of agriculture automated machine detection. According to the on-line detection device, N annular metal electrodes which make up a sensor probe are inserted into the inner wall of a seed sowing tube of a precision seed sowing device and are arranged in such a way that the annular metal electrodes are parallel to the vertical direction in which seeds move, and therefore an annular metal electrode array is formed; the annular metal electrode array is connected with a signal conditioning module via a shielding wire cable, and the signal conditioning module is connected with a display module via a signal analyzing module. The signal analyzing module receives output signals of the signal conditioning module, measuring signals are subjected to wave filtering and amplifying operation, the signals are analyzed, and analysis results are display in real time via the display module. The detection device can realize non-contact type on-line detection, seed falling processes can be prevented from interference, an annular sensor is free from blind areas for detection, the detection device is convenient to install and low in price, and the detection device is applicable to precision seed sowing device work performance on-line detection in the technical field of agriculture automated machine detection.

Description

technical field [0001] The invention belongs to the technical scope of agricultural automation machinery detection, and in particular relates to an on-line detection device for the working performance of a precision seed meter based on an electrostatic sensor. Background technique [0002] The development of agricultural automation technology is an important measure to improve crop yield and farmers' income. The emergence of precision seeding technology has improved seeding efficiency and saved labor costs, which is an important aspect of the development of agricultural industrialization. The performance parameters of the precision seeder metering device directly affect the qualified rate of sowing, so it is particularly important to detect it in real time. [0003] The main indicators to measure the performance of precision seed meters are qualified index, reseeding index, missing seeding index and seeding amount per unit length. The methods used by existing detection dev...

AI Technical Summary

Problems solved by technology

The traditional sampling method needs to sample the population distribution of the whereabouts. Although it is relatively accurate and intuitive, sampling is inconvenient and inefficient, and offline detection has no timeliness

The image method uses an optical camera to obtain the image of the seed whereabouts, and through the detailed analysis of the image of the seed whereabouts, the information of the seed size and the distance between the seeds is extracted. The result of this method is also relatively intuitive, but the cost is high, and the optical components are easily polluted by the on-site environment

The photoelectric method extracts the performance parameters of the seed meter by detecting the pulse signal caused by the falling of the seeds. Although its structure is simple and the price is low, there is a detection blind area in the area that the photosensitive element cannot cover, and the light-transmitting window is polluted by long-term use. Can seriously affect measurement performance

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