Livestock and poultry house breeding environment temperature prediction control system and regulation and control method thereof

Abstract

The invention discloses a livestock and poultry house breeding environment temperature prediction control system and a regulation and control method thereof. The control system comprises a temperature and humidity sensor, a breeding environment temperature dynamic demand module, an environment controller and an environment regulation and control execution mechanism, wherein the environment controller is respectively connected with the breeding environment temperature dynamic demand module and the temperature and humidity sensor, and the environment regulation and control execution mechanism is connected with the environment controller and executes corresponding environment regulation and control according to a command of the environment controller. The regulation and control method controls the breeding environment temperature according to a dynamic setting model of the livestock and poultry breeding environment temperature, a livestock and poultry house breeding environment temperature prediction system based on a GM (1, 1) model and a gray prediction fuzzy system based on the GM (1, 1) model. The problems that the temperature in the livestock and poultry house is difficult to regulate and control in time, the regulation and control adaptability is poor and preventive measures cannot be taken are solved, and the limitation of feedback regulation and control of the livestock and poultry house based on a detection result is overcome.

Description

technical field [0001] The invention relates to the technical field of agricultural environment control, in particular to a system for predicting and controlling the environment temperature of livestock and poultry houses and a control method thereof. Background technique [0002] In a high-density, large-scale house feeding environment, a suitable breeding environment is a key factor affecting the health and production performance of livestock and poultry, and is also the basis for ensuring their genetic potential and production efficiency. The complex and changeable climatic conditions, construction facilities of livestock and poultry houses, ventilation and air flow organization and feeding mode all directly affect the environment inside the house, resulting in the complexity and diversity of the environment inside the house. Stress and other factors affect the health, production performance, disease resistance and feed conversion rate of livestock and poultry. The large-...

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Problems solved by technology

[0006] (1) The control temperature is a limited value, which is difficult to control in real time and accurately, and cannot meet the needs of different growth stages for the ambient temperature: the set value of the ambient temperature in the livestock house is generally several or more specific temperature critical values, which cannot be set according to Scientifically set the temperature value according to the needs of different stages of livestock and poultry growth;

[0007] (2) It is difficult to adjust the environment in the house in time, there is hysteresis, and the control efficiency is poor

The environmental parameters in the house at that moment monitored by the sensor are used as indicators, and the environmental conditions in the house at the next moment are fed back and regulated. The research shows that the thermal environment system changes in livestock and poultry houses are dynamic, time-varying and uncertain. According to The temperature information of the controlled quantity can be measured to determine the controlled quantity. For the complex object of the environmental lag process of the livestock and poultry house, the change of the controlled quantity cannot respond to the change of the controlled quantity in time. Compared with the environmental conditions in the house, the environmental control strategy has obvious differences. Hysteresis, it is impossible to adjust the control strategy according to the prediction of the temperature change trend of the controlled quantity, and the control efficiency is poor

The local environment in the house is no longer within the range suitable for the growth of livestock and poultry, but the signal received by the environmental control system is still within the range of suitable environment. Cold and heat stress environment can easily lead to the occurrence of respiratory diseases;

[0008] (3) Low control precision

The response time of PID control is short but the overshoot is large, and the environmental temperature control system of livestoc

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