Device and method for detecting seed metering performance of air suction seed metering device

Abstract

The invention provides a device and method for detecting the seed metering performance of an air suction seed metering device, and relates to the field of seed metering device detection. The device comprises a driving mechanism for driving a to-be-detected seed metering device to operate, a first bracket for mounting the seed metering device, and a second bracket for mounting a seed guide pipe; a power output shaft of the driving mechanism is connected with a connector used for being in butt joint with a seed-metering shaft of a seed-metering device, a negative pressure source of the driving mechanism is connected with an air pipe used for being in butt joint with the seed-metering device, a first sensor and a second sensor are arranged on the second support at intervals, the first sensor is used for obtaining the seed-metering interval and number of an outlet of the seed-metering device, and the second sensor is used for acquiring the seeding interval and quantity after being guided by the seed guide pipe. The seed-metering device and the seed guide pipe are jointly monitored, the seed falling distribution condition of the outlet of the seed-metering device and the seed falling distribution condition of the outlet of the seed guide pipe are respectively obtained through the sensors, operation of collecting data in field test sowing is avoided, denoising is performed on performance detection of the seed-metering device according to the seed falling condition of the outlet of the seed guide pipe, and the detection precision is improved.

Description

technical field [0001] The present disclosure relates to the field of detection of seed metering devices, in particular to a device and method for detecting seeding performance of an air suction seed metering device. Background technique [0002] High-speed precision seeding technology and equipment are the basis for improving the quality of crop sowing and agricultural production efficiency. The seed meter, as the heart component of the seeder, is the carrier of the key technology for high-speed precision sowing. During the high-speed operation of the seeder, the working performance of the seed metering device is easily affected by factors such as the speed of the seed metering disc and the pressure of the negative pressure chamber, which may easily cause frequent occurrences of leakage, reseeding, etc., and reduce the operating performance. [0003] The inventors found that when the planter is inspected or overhauled at the factory, it is necessary to perform a performance...

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Problems solved by technology

During the high-speed operation of the seeder, the working performance of the seed meter is easily affected by factors such as the speed of the seed metering disc and the pressure of the negative pressure chamber, which may cause frequent occurrences of leakage, reseeding, etc., and reduce the operating performance

[0003] The inventors found that when the planter is inspected or overhauled at the factory, it is necessary to perform a performance test on the core seed meter structure. The current performance test of the seed meter is mostly realized by field tests on the seeder, and it is difficult to directly test the seed meter structure. The main body performs performance testing. The seeds output by the seeder during the single-grain precision sowing work need to pass through the seed guide pipe to reach the sowing position after being output by the seed metering device. The influence of the seed tube is introduced into the seed metering performance test of the seed meter, resulting in a large error; some seed meters are equipped with sensors at the exit position to monitor and obtain seed metering information. However, it is still necessary to denoise the seed metering situation of the seed metering device in combination with the ground seeding situation, which is difficult to meet the performance detection of the seed metering device in non-field test scenarios

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