DEVELOPING AN INTERNET OF THINGS DEVICE TO TRACK THE TEMPERATURE AND HUMIDITY OF MEDICAL STORAGE
DOI:
https://doi.org/10.69598/tbps.17.2.101-118Keywords:
Internet of Things (IoT), Temperature and Humidity, LogTag®, CalibrationAbstract
A standardized drug storage system is one factor that ensures patients receive quality medicine from a hospital. Temperature and humidity are two of the most important factors affecting the stability of medications. Therefore, a temperature and humidity monitoring system is critical to the pharmaceutical storage process. An effective system must be capable of displaying information in real-time. It should be able to notify the person in charge if temperature or humidity is outside the specified range, thus reducing human errors. This study focused on developing IoT devices to measure temperature and humidity and to evaluate their performance. The IoT devices were composed of the NodeMCU V2 LUA based ESP8266-12E and the DHT22 temperature and humidity sensor. The Arduino IDE program was used to write instructions in C/C++. The NETPIE2020 cloud server was used for online data access. A notification system via Line notification was also established. The IoT devices can collect and report data online and notify via Line when the temperature or humidity needs to be adjusted. Temperature and humidity data from the IoT devices were compared to that of a standardized LogTag®. Temperature and humidity data were collected every 30 minutes for 24 hours, and every 30 seconds for 1 hour. The means of the temperature and humidity from devices were compared using One Way ANOVA. Results showed that the IoT devices measured the temperature and humidity reliably. However, the means of the temperature and relative humidity from the IoT devices differed from the LogTag® significantly at p-value of 0.05. Therefore, it is important to calibrate the developed IoT devices with standard equipment such as LogTag® prior to being implemented.
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