Error reduction type seed weighing method and weighing machine

Abstract

The invention discloses an error reduction type seed weighing method and a weighing machine, and the method comprises the steps: carrying out the pre-adjustment of parameters of the seed weighing machine, enabling a weighing normal distribution curve of a main weighing mechanism to deviate leftwards by two times of the standard deviation, enabling the weighing range of an auxiliary weighing mechanism to be equal to the deviation of the main weighing mechanism, carrying out the feeding, and enabling the weighing range of the auxiliary weighing mechanism to be equal to the deviation of the main weighing mechanism; enabling seeds to fall into a main weighing hopper of the main weighing mechanism and an auxiliary weighing hopper of the auxiliary weighing mechanism for comprehensive weighing, after combined weighing judgment and selection, enabling the seeds in the main weighing hopper to fall independently or fall into a chute disc together with the seeds in the auxiliary weighing hopper, and therefore, accurate weighing precision is obtained. According to the weighing machine, the main weighing head and the auxiliary weighing head are combined, the auxiliary weighing head is used for weight compensation, error correction is carried out on the main weighing head, most production requirements can be met, the measuring speed and precision of some small-particle seeds are high, and the weighing machine is small in size, low in manufacturing cost and beneficial to popularization and promotion.

Description

technical field [0001] The invention relates to the technical field of seed weighing, in particular to a method for weighing seeds with errors and a weighing machine. Background technique [0002] With the rapid development of modern agricultural technology, the market has higher and higher requirements for the precision weighing technology of seeds. The existing seed precision weighing machines are mainly divided into three types: (1) volumetric method, Quantitative container stacking height; (2) counting grain counting method, through mechanical counting grains, photoelectric counting grains and other methods, calculate the weight of 100 or 1000 grains of seeds; (3) combined weighing method, increase the number of weighing heads to improve the weight of seeds Quantitative precision. [0003] First, the volume measurement method, due to the accumulation phenomenon and the gap between seeds, often leads to large errors; second, the counting method has high precision, but it...

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Problems solved by technology

However, it cannot meet most production requirements, and its measurement speed and accuracy are relatively low for some sma

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