Design of detection and control circuit for greenhouse based on sensor technology

By monitoring environmental conditions through a comprehensive multi-sensor data acquisition and transmission circuit system, it is possible to regulate crop growth and development, and improve crop quality and yield．Based on STM32F103 microcontroller, detection of environmental parameters such as internal temperature and humidity, carbon dioxide concentration, light intensity, and soil moisture was implemented．Combined with various environmental parameters required for crop growth, automatic adjustment of environmental parameters was achieved through modules such as water pumps, fans, and LED lights．In addition, compared to traditional greenhouse monitoring systems, integration of 4G module enables system's operational process to be synchronously displayed in real-time on mobile upper computer client, making it easier for users to remotely adjust and control abnormal conditions in planting area remotely．