Microcontroller-based Data Logger Research Articles

Using Internet of Things application for Monitoring Photo-Voltaic Panel Based on Ask Sensors Cloud

Internet of Things (IOT) devices and monitoring systems are essential for the accurate, reliable, and proper functioning of photovoltaic (PV) solar energy systems. The data acquisition and monitoring system ensure adequate operation and ascertain system malfunctions before they become significant problems. The IOT integrates ordinary items using modern technology in the physical scope. It is all feasible to utility voltage, current, temperature, and humidity sensors. The current research focuses on developing a cost-effective, accessible, and steadfast data monitoring system. A microcontroller-based data logger is stored in a cloud. The data can be downloaded directly from the website using the IoT technique because photovoltaic (PV) panels are built-in faraway locations and humans cannot reach them. The suggested system demonstrates the online utilization of solar PV power.

Development of microcontroller-based data logger for real-time monitoring of drying and storage of food grains

Food grains are harvested at higher moisture content to avoid losses during harvesting. Temperature and relative humidity are the key control factors of drying and storage operations for maintaining and enhancing the quality of food. Real-time monitoring and management of these parameters improve the level of post-harvest processing and reduce losses. An effort has been made to develop a data logger for real-time monitoring of the drying and storage environment. It consists of different modules such as precision integrated temperature and relative humidity sensor DHT22, LCD, SD Card, motor control driver, and RTC 3231 for real-time monitoring and data recording of temperature and humidity. An open-source-based software program was developed to integrate all modules in one platform to operate sequentially. Developed data logger tested in a 0.5-tonne grain storage structure and 100 kg capacity solar-powered air-inflated dryer. The temperature of drying air ranged between 29.8 and 38.2°C compared to ambient air temperature ranging from 25.7 and 34°C. Moisture reduction from 22% to 14% (w.b.) was completed in 7.5-9 hours in the developed dryer compared to 11-12.8 hours in sun drying. Variation of temperature and humidity inside double-wall insulated silo is less as compared to the single wall and triple-layer plastic storage structure. The salient features of this developed system are costefficient, portable, robust, and fast use and perform satisfactorily under different conditions.

A data logger for teaching data capturing and analysis to engineering students

AbstractData logging is the process of collecting and storing data from an experiment. Traditionally, data from science experiments was collected manually by hand and graphs were produced using pen and paper. By the introduction of cheap and powerful microcontrollers, all data logging operations are currently carried out using microcontroller‐based data logging devices. This article describes the design of an educational microcontroller‐based data logger device, which can be used to collect and save data for both offline and online analysis. © 2009 Wiley Periodicals, Inc. Comput Appl Eng Educ 18: 397–405, 2010; Published online in Wiley InterScience (www.interscience.wiley.com); DOI 10.1002/cae.20281

Design and realization of a portable data logger for physiological sensing

A microcontroller-based data logger has been designed, prototyped, and field-tested for recording galvanic skin response data and relaying them to a computer for physiological analysis. Focusing on system design issues concerning battery-driven ambulatory applications, this paper presents a special data compression algorithm based on relative encoding to optimize memory utilization and reduce data transfer time. Data flow coordination and timing control are enabled by a PIC microcontroller. A handheld prototype measuring 180/spl times/90/spl times/30 mm was built and tested for ease of use, safety, and reliability.