RESEARCH ON ENVIRONMENTAL MONITORING AND COMPREHENSIVE EVALUATION SYSTEM OF PIG HOUSE BASED ON INTERNET OF THINGS TECHNOLOGY

To address the issues of low precision and high cost in pig house environmental monitoring, an Internet of Things (IoT)-based pig house environmental monitoring system is proposed in this study. The system utilizes ESP32 as the main control chip of each sensor node, which is constructed in a star topology structure, realizing data transmission by using wireless communication technology. By incorporating the median filtering function and the Kalman filtering algorithm to perform data fusion of the same type of environmental parameters, the accuracy of the data is ensured. Based on the environmental suitability requirements of pigs, an evaluation index system for pig house environmental suitability is established, and comprehensive weight calculations are carried out by combining the entropy weight method and the improved analytic hierarchy process. Simulation experimental results demonstrate that the error of the temperature data after Kalman filtering fusion is merely 0.12%, fulfilling the monitoring accuracy requirements. The system can precisely evaluate the environmental suitability of pig houses, and it is applicable for monitoring pig house environments.