Seed vitality measuring system based on laser absorption spectrum technique and method

A technology of laser absorption spectroscopy and measurement system, applied in the field of seed vitality measurement system based on laser absorption spectroscopy technology, can solve the problem of lack of dynamic, fast, real-time measurement, inability to guarantee the accuracy of seed vitality measurement, damage to the seed respiration microenvironment, etc. To ensure authenticity and validity, ensure accuracy, and improve detection sensitivity

Inactive Publication Date: 2018-10-02
HUZHOU TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. It is necessary to pretreat the seeds, or put the seeds in a solution environment for testing, which destroys the microenvironment of the seeds' respiration; 2. The accuracy of the measured data is usually only 10 -3 order of magnitude, cannot achieve O 2 and CO 2 The micro-measurement of concentration; 3, do not have the characteristics of dynamic, fast, real-time measurement; 4, by seed breathing related gas (O 2 and CO 2 ) when measuring seed vigor,

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  • Seed vitality measuring system based on laser absorption spectrum technique and method
  • Seed vitality measuring system based on laser absorption spectrum technique and method
  • Seed vitality measuring system based on laser absorption spectrum technique and method

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Embodiment 1

[0067] The present embodiment provides a kind of seed vigor measurement system based on laser absorption spectroscopy technology, wherein: see figure 1 As shown, the seed vitality measurement system includes: an optical absorption cell 1 , a tunable semiconductor laser system 2 , a signal acquisition and processing module 3 and a first control module 4 . Its core idea is to place the seeds to be measured in a sealed optical absorption cell 1, and measure the O of the sealed optical absorption cell 1. 2 and / or CO 2 Gas concentration changes, in the present embodiment, preferably measure the CO produced by seed respiration 2 , to obtain the seed vigor of the seeds to be measured. Due to the limited number of seeds to be measured placed in the sealed optical absorption cell 1, the concentration change of the gas to be measured in the sealed optical absorption cell 1 caused by seed respiration is very insignificant, which requires high sensitivity and high precision measurement ...

Embodiment 2

[0097] The present embodiment corresponds to embodiment 1, mainly based on the seed vigor measurement system based on laser absorption spectroscopy technology provided in embodiment 1, providing a kind of seed vigor measurement method based on laser absorption spectroscopy technology, wherein, the method includes:

[0098] Obtain the seeds to be measured, and place the seeds to be measured in an optical absorption cell; wherein, the optical absorption cell is sealed;

[0099] A tunable semiconductor laser system is used to provide the optical absorption cell with a tunable wavelength laser for detecting the measured gas; wherein the measured gas is CO 2 ;

[0100] Obtain the laser absorption spectrum signals of the measured gas in the optical absorption cell at n times respectively; wherein, n is a positive integer, and n≥2; any two adjacent time intervals Δt; in this embodiment, n is 5 , Δt is taken as 30min;

[0101] Sequentially process the laser absorption spectrum signa...

Embodiment 3

[0115] The only substantial difference between this embodiment and embodiment 1 is: by measuring the O of the sealed optical absorption cell 1 2 The change of gas concentration over time is used to measure the vigor of seeds, and the O 2 The gas concentration uses laser absorption spectroscopy technology with tunable wavelength, and the measurement principle is the same as measuring CO with tunable wavelength laser absorption spectroscopy technology. 2 Concentration is the same, so I won’t do too much description here. It should be noted that, at this time, it is necessary to select the laser module 21 to be able to output for O 2 A laser that absorbs laser light at a wavelength of 764.2nm.

[0116] This embodiment provides a seed vigor measurement system based on laser absorption spectroscopy technology, which includes: an optical absorption cell 1, a tunable semiconductor laser system 2, a signal acquisition and processing module 3 and a first control module 4 . Its core ...

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Abstract

The invention belongs to the field of seed vitality measurement and discloses a seed vitality measuring system based on a laser absorption spectrum technique and a method. The seed vitality measuringsystem comprises a tunable semiconductor laser system and an optical absorption tank, wherein the tunable semiconductor laser system is used for providing tunable wavelength laser; the optical absorption tank is sealed and internally provided with quantum to be measured; an incidence light hole and an outgoing light hole are formed in the optical absorption tank; an incidence optical fiber is hermetically mounted on the incidence light hole; a detector is hermetically mounted on the outgoing light hole; tunable wavelength laser is fed into the optical absorption tank through the incidence optical fiber, is reflected and oscillated in the optical absorption tank, in addition is capable of absorbing an O2 gas and/or a CO2 gas for reflecting vitality of a seed to be measured, and later is received by the detector, and then an O2 gas absorption spectrum optical signal and/or a CO2 gas absorption spectrum optical signal. By adopting the system, seeds do not need to be pretreated, a microenvironment of seed respiration is not damaged, in addition, the system has the advantages of rapidness, convenience, high sensitivity and high precision.

Description

technical field [0001] The invention belongs to the field of seed vigor detection, and in particular relates to a system and method for measuring seed vigor based on laser absorption spectrum technology. Background technique [0002] Seed vigor is the sum of seed germination rate, seedling growth potential, plant stress resistance and production potential. It can directly reflect the pros and cons of plant traits, is an important indicator for evaluating seed quality, and is of great significance to the development of agriculture and other related industries. In 1950, the International Seed Conference clearly distinguished seed vigor and germination ability, and determined that seed vigor was an important indicator of seed quality; in the 1970s, research on seed vigor increased, and it has now become a very important part of seed physiology research. [0003] Oxygen, chemical formula O 2 , is a well-known indispensable important substance for biological respiration; the fl...

Claims

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Application Information

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IPC IPC(8): G01N21/39
CPCG01N21/39
Inventor 贾良权祁亨年许琴
Owner HUZHOU TEACHERS COLLEGE
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