Detection method for hybrid rice glume-split seeds based on acoustic characteristics

Abstract

The invention relates to a detection method for hybrid rice glume-split seeds based on acoustic characteristics. The detection method is characterized by acquiring a sound signal by controlling the falling height of the hybrid rice seeds and a distance between a sound sensor and an inclined collision glass plate and realizing the recognition and separation for normal seeds and glume-split seeds of hybrid rice by analyzing the time-domain characteristics and frequency domain characteristics of the sound signal. The detection method comprises the following specific steps: shaking a feeding device to make the hybrid rice seeds fall one by one and impact the collision plate; acquiring the sound signal generated by the collision between the seeds and the collision plate by the sound sensor; transmitting the sound signal to a computer by a data line; displaying and storing the sound sensor by the computer; utilizing digital signal processing software to process sound signal data, thereby acquiring the time-domain characteristic curve of the sound signal and extracting the time-domain characteristic values, including voltage amplitude, short-time energy and average amplitude, of the sound signal; performing Fourier transform on the signal, thereby acquiring a frequency-domain characteristic curve, and extracting the frequency-domain characteristic values, including area of power spectral density, maximum value of power spectral density and minimum value of power spectral density, of the sound signal.

Description

technical field [0001] The invention relates to a method for detecting split glume seeds based on the acoustic characteristics of hybrid rice seeds. 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 i...

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Problems solved by technology

The water selection method can only be used for the rice seeds that are about to be sown, and the image proc

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