Collision-characteristic-based crack-glume seed detection method of hybrid rice

Abstract

According to the invention, vibration signals are collected by controlling falling heights of hybrid rice seeds and the length and thickness of a cantilever steel plate and time-domain characteristicsof the vibration signals are analyzed to realize identification and sorting of normal seeds and crack-glume seeds of hybrid rice. To be specific, the method comprises: vibrating a feeding device to enable single hybrid rice seeds to fall vertically with the heads down and collide with a steel plate; collecting steel plate vibration signals caused by the collision of the seeds with the steel plateby an acceleration sensor; collecting the vibration signals by a data collection card and transmitting the vibration signals to a computer; displaying and storing the vibration signals by the computer; on the basis of a signal processing method, carrying out preprocessing and time-domain analysis on the vibration signal data and extracting time domain characteristic parameters including a voltagepeak, a range, a root mean square, energy, and a kurtosis; and setting a time domain characteristic parameter threshold and identifying and sorting normal seeds and crack-glume seeds of hybrid rice.

Description

technical field [0001] The invention relates to a method for detecting split glume seeds of hybrid rice based on collision characteristics. Background technique [0002] Seeds of hybrid rice have severe glume splitting, which is a genetic characteristic of male sterile lines. During the seed production of hybrid rice, the sterile line increases the chance of capturing pollen by prolonging the flowering time. During the long flowering process, the inner and outer glumes will age or even shrink due to sun exposure, water loss, etc., resulting in pollination. The ability to close glumes of florets was obviously reduced, and the inner and outer glumes of some florets could not be completely closed to form split grains, or the inner and outer glumes could be barely closed but could not be closely connected to form split glumes. Both of these situations are called hybrid rice seed splitting. [0003] During the maturation process of rice seeds, rice husk cracking will inevitably...

AI Technical Summary

Problems solved by technology

Therefore, under the same state, there are obvious differences in the pulse force generated when normal seeds and split glume seeds hit the detection system, so there are differences in the vibration signals generated by the steel plate

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