Design of Wireless Temperature and Humidity Sensor Based on NRF24L01

Abstract:

According to the development of the Internet of things, a wireless cognitive transducer based on humidity-sensitive capacitor was designed. The ambient temperature and humidity are measured by temperature &humidity transducer which transfers the capacity into frequency signal with the help of RC oscillation, followed by the frequency with MSP430 SCM and the humidity accordingly. Thermal sensitive resister of the negative temperature system is used to measure the temperature. When measuring, the humidity can be compensated by temperature data, thus ensuring higher precision and stability of humidity measuring. The measured data are sent out by NRF24L01 through communication protocol to accomplish distant data collection of temperature and humidity, which foretells a bright prospect.

• Periodical: Advanced Materials Research (Volumes 403-408)
• Pages: 1277-1280
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.403-408.1277
• Online since: November 2011
• Authors: Wen Gang Chen, Xue Zhang, Bao Hu Liu
• Keywords: Humidity Measurement, Temperature Measurement, Wireless Transceiver

References

[1] Mo chizuki K, Watanabe K. A high-resolution, linear resistance to frequency converter [J]. IEEE Trans Instrum Meas, 1996; 45(6): 761.

DOI: 10.1109/19.494596

[2] Liu Xiao hong. Wireless Data Communication System Based on nRF2401[J]. Journal Of The University Of Petroleum, China, (2008).

[3] Lanlan Zhen and Yuming Shen, Metering Principle of Quantity of Heat and Calculation of Heat Meter , Process Automation Instrumentation, vol. 24 no. 10, Oct. (2003).

[4] Bhatnagar H. Adv anced ASIC chip synthesis [ M ]. Kluwer Academic Publishers.