应用无线传感器的湿度准确检测与控制系统设计

Design of Accurate Humidity Detection and Control System Based on Wireless Sensor

本设计以室内湿度准确检测与控制为研究对象,为了准确检测湿度,采用了多个无线湿度传感器节点将采集到的信号发送到收发模块,经收发模块对信号进行处理后送入单片机。系统可对湿度进行设定,单片机根据当前室内湿度和设定湿度的比较结果,进行PID运算,控制输出宽度可调的PWM方波,并由此控制固态继电器的导通和关断来控制加湿、去湿设备,从而使室内湿度接近设定值。根据测试结果,通过无线湿度传感器节点的合理分布可有效的改善湿度检测与控制的准确性。

This design takes indoor humidity accurate detection and control as the research object. In order to detect humidity accurately, several wireless humidity sensor nodes are adopted to transmit the collected signals to the transceiver module. The signal is processed by the transceiver module and sent into the single-chip microcomputer. The system can set humidity. According to the comparison results of indoor humidity and setting humidity, the single chip computer carries out PID operation, controls the output PWM square wave with adjustable width, and controls the conduction and turn-off of solid state relay to control humidification. Dehumidifier, so that the indoor humidity close to the set value.According to the test results, the reasonable distribution of wireless humidity sensor nodes can be effective. Improve the accuracy of humidity detection and control.