Building indoor temperature and humidity detection system and method based on zigbee technology

Abstract

The invention discloses a hygrothermograph node monitoring system and a hygrothermograph node monitoring method based on the zigbee technology, and belongs to the technical field of indoor environment wireless detection. The system comprises a voltage sensing modulation circuit, a capacitive sensing modulation circuit, a digital sensing circuit, a wireless processor, a liquid crystal display module, a USB (universal serial bus) to serial port circuit and a keyboard, wherein the outputs of the voltage sensing modulation circuit, the capacitive sensing modulation circuit and the digital sensing circuit are respectively connected with the wireless processor, and the humidity detection results are obtained through data merging processing and are sent to the liquid crystal display module and the USB to serial port circuit to be output. A plurality of sensors are adopted for measuring the humidity, the precision and the reliability of the humidity detection are improved. The CC2530 wireless processor supporting the ZigBee technology is adopted to be used as a main control chip to form a temperature and humidity sensor node, a wireless sensor network is used for networking, and the system and the method have the characteristics that the communication line connection is not needed, the networking is convenient, the precision is high, and the like.

Description

technical field [0001] The invention relates to indoor temperature and humidity monitoring of a building involving zigbee technology, and belongs to the technical field of wireless detection in the building room. Background technique [0002] Zigbee technology has begun to enter the application stage. At present, wired data collection is still used in the building room. Generally, the temperature and humidity signals are collected and processed by the data collector. There are also digital sensors (transmitters) output by RS232 and other interfaces and sent to the data collector. . These systems are all wired, and there are problems such as complicated connection, difficult maintenance and repair, and often poor contact. Temperature and humidity are common physical quantities. Currently, voltage output, capacitance output, and digital output temperature and humidity sensors are commonly used. However, due to the particularity of temperature and humidity parameter measureme...

AI Technical Summary

Problems solved by technology

However, due to the particularity of temperature and humidity parameter measurement, its accuracy and stability are relatively low, and it is difficult to obtain high-precision detection

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