【摘要】 文中研究开发了一套基于ESP32的多节点分布式温室环境控制系统。该系统利用FreeRTOS实时操作系统及多线程技术，有效监控和调节温湿度、光照强度及CO₂浓度等关键环境参数。借助RS 485总线和MQTT协议，确保了数据在复杂温室环境下的高稳定性传输，实验数据显示成功率高达99.96%。相较于传统控制方法，文中系统不仅提升了控制精度，还显著降低了能耗，证实了其在现代农业生产中的高效性和广泛适用性。更多还原

【Abstract】 A multi-node distributed greenhouse environmental control system based on ESP32 is developed in this study. By employing the FreeRTOS real-time operating system and multi-threading technology, the system monitors and adjusts key environmental parameters such us temperature and humidity, illumination intensity, and CO₂ concentration effectively. By utilizing the bus RS 485 and the MQTT protocol, the system ensures high-stability data transmission in complex greenhouse environments, and the experimental data shows that the success rate is as high as 99.96%. In comparison with the traditional control methods, the proposed system not only improves control accuracy, but also reduces energy consumption significantly, which demonstrates its high efficiency and wide applicability in modern agricultural production.更多还原