A simple calibration methods of relative humidity sensor DHT22 for tropical climates based on Arduino data acquisition system
Open Access
- 25 January 2019
- conference paper
- conference paper
- Published by AIP Publishing in AIP Conference Proceedings
- Vol. 2062 (1), 020009
- https://doi.org/10.1063/1.5086556
Abstract
Nowadays, there are many sensors that can be directly connected to the microcontroller to measure and calculate the value of relative humidity immediately. However, the existing sensors are made designed and tested to measure the conditions of the location where the sensor is made, which will cause deviation of the results at other locations. Therefore, it should be known more accurately the characteristics of DHT22 sensor in the tropical region. This calibration is done by comparing the relative humidity value on the sensor with the relative humidity value obtained from the manual measurement by the ASTM E337-84 method that taken at the same time. The advantages of DHT22 sensor are relatively cheap and easily obtained through online purchases. The Data collected would be engineered to the output of the sensor so that the detected value on DAQ will generate humidity value that is close to the humidity value with the ASTM E337-84 method. In conclusion, DHT22 sensor has different characteristics than the existing specifications in the data sheet, and this calibration method can improve the performance of this DHT22 sensor that this sensor after calibration, DHT22 will be used fregmently for testing the performance of portable incubator made by Universitas Indonesia.Keywords
This publication has 10 references indexed in Scilit:
- Portable cyber-physical system for indoor and outdoor gas sensingSensors and Actuators B: Chemical, 2017
- Thermal management in closed incubators: New software for assessing the impact of humidity on the optimal incubator air temperatureMedical Engineering & Physics, 2017
- Open-source digital technologies for low-cost monitoring of historical constructionsJournal of Cultural Heritage, 2017
- Additional double-wall roof in single-wall, closed, convective incubators: Impact on body heat loss from premature infants and optimal adjustment of the incubator air temperatureMedical Engineering & Physics, 2016
- Open source hardware to monitor environmental parameters in precision agricultureBiosystems Engineering, 2015
- Asphalt Pavement Temperature Profile for Tropical Climate in IndonesiaApplied Mechanics and Materials, 2015
- Wet-Bulb Temperature from Relative Humidity and Air TemperatureJournal of Applied Meteorology and Climatology, 2011
- Fundamentals of Instrumentation and MeasurementPublished by Wiley ,2007
- Neonatal hypothermiaJournal of Neonatal Nursing, 2005
- Basic ProbabilityPublished by Elsevier BV ,2003