Agricultural greenhouse harmful gas distributed measurement and control method based on agricultural automation

Abstract

The present invention discloses an agricultural greenhouse harmful gas distributed measurement and control method based on agricultural automation. The method concretely comprises the following stepsof: establishing a system, and establishing monitoring nodes and a ventilation control subsystem; and communicating the monitoring nodes and the ventilation control subsystem, wherein the monitoring nodes employ distributed structures and are installed at different typical positions to perform multi-point distributed measurement of harmful gas concentration through a sensor array and send data andidentification codes of each node to a ventilator control system through a RFID network at the same time, and a main controller of the ventilator control system performs statistics analysis of data of each node. The method provided by the invention can achieve distributed high-precision multi-point detection of harmful gas concentration in the greenhouse, can effectively execute circuit automaticregulation of a ventilator to timely exhaust the harmful gas and has a good utility effect.

Description

technical field [0001] The invention relates to an application of agricultural information technology, in particular to a method for distributed measurement and control of harmful gases in agricultural greenhouses based on agricultural automation, and belongs to the technical field of agricultural information technology. Background technique [0002] With the continuous growth of China's population and the gradual reduction of arable land, it is imperative to develop facility agriculture and realize the sustainable development of agriculture. Facility agriculture has certain facilities, which can improve environmental and meteorological factors in a local area and provide for plant growth and development. An industry that provides good environmental conditions for effective production; the purpose of facility agriculture is to achieve resource conservation and environmental protection on the basis of improving agricultural production efficiency and output; vigorously developi...

AI Technical Summary

Problems solved by technology

[0002] With the continuous growth of China's population and the gradual reduction of arable land, it is imperative to develop facility agriculture and realize the sustainable development of agriculture. Facility agriculture has certain facilities that can improve environmental and meteorological factors in a local area and provide for plant growth and development. An industry that provides good environmental conditions for effective production; the purpose of facility agriculture is to achieve resource conservation and environmental protection on the basis of improving agricultural production efficiency and output; vigorously developing facility agriculture is an effective way for Chinese agriculture to modernize , is of great significance for optimizing the industrial structure, promoting agricultural modernization, improving economic benefits, increasing farmers' income, and improving the agricultural ecological environment; in recent years, with the continuous improvement of agricultural technology, greenhouse planting technology has been rapidly popularized and applied , and become an efficient means of crop cultivation, vegetable and fruit supply, and flower cultivation; because the environment in the greenhouse is relatively closed and the air circulation is poor, automatic real-time monitoring of the environmental parameters in the greenhouse is particularly important; the current automation facilities are mostly concentrated in the greenhouse. Monitoring of internal temperature, humidity, light and CO2 concentration; however, ammonia, nitrogen dioxide, sulfur dioxide and other toxic gases produced by topdressing chemical fertilizers, immature manure and cake fertilizers, etc., as well as ethylene from plastic films or pipes , if it cannot be discharged in time, it will endanger the growth and development of crops, and in severe cases, it will cause plant death and crop failure; therefore, the real-time monitoring and discharge of the above-mentioned harmful gases is of great significance; however, the current monitoring mainly relies on artificial or semi- Manually, it seriously affects the performance of the greenhouse and the growth safety of the crops