System and method suitable for measurement, control and calibration of carbon dioxide in greenhouse environment

Abstract

The invention relates to the technical field of measurement, control and calibration of facility production carbon dioxide and discloses a system and a method suitable for measurement, control and calibration of carbon dioxide in a greenhouse environment. The system comprises a wireless carbon dioxide measuring device (16) and a wireless control device (18). The wireless carbon dioxide measuring device (16) is used for collecting fertilization concentration of carbon dioxide in a greenhouse, photosynthetically active radiation values, air temperature and humidity data and storing air fertilizer standard values of different crops at different growth periods so as to serve as a decision basis for carbon dioxide concentration fertilizing time and fertilizing amount. The wireless control device (18) is used for obtaining the data and the standard values from the wireless carbon dioxide measuring device (16) and controlling instructions to perform carbon dioxide fertilization control. The wireless carbon dioxide measuring device (16) adopts calibration methods including gas concentration change rate tracking, outdoor gas concentration, temperature and humidity compensation and the like to perform carbon dioxide calibration. The system and the method can achieve measurement, control and calibration of carbon dioxide in the greenhouse environment.

Description

technical field [0001] The invention relates to the technical field of measurement, control and proofreading of carbon dioxide produced by facilities, in particular to a carbon dioxide measurement, control and proofreading system and method suitable for greenhouse environments. Background technique [0002] Reasonable CO 2 Increasing the application of gas fertilizer can improve the photosynthesis rate and stress resistance of crops, promote the growth and development of crops, and improve the quality. It has become one of the important technologies for increasing production and income in greenhouses. After more than 20 years of promotion in China, this technology generally uses methods such as natural fermentation, solid carbon dioxide particles, appropriate ventilation, and chemical reactions to obtain CO 2 For gas fertilizers, the amount of gas generated is mostly obtained through manual calculation, and CO is rarely used in the process of additional application. 2 dete...

AI Technical Summary

Problems solved by technology

greenhouse crops for CO 2 The exact consumption of CO is changing over time, and the CO 2 Consumption is also affected by factors such as ambient temperature, solar radiation, and different growth periods of crops. Currently, CO 2 Fertilization is a lot based on CO 2 The values ​​of measuring instruments and personal experience do not take into account the influence of other environmental factors

[0008] At present, many carbon dioxide calibrations use standard gas for calibration, which requires bulky and expensive gas generators or purchase of standard gas calibration, and the operation is complicated

At the same time, in the process of proofreading and measuring, people, animals and plants have a great influence

Especially in the greenhouse production environment, it is often necessary to return the sensor to the original factory for calibration, which takes a long time, so it will have a greater adverse impact on production

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