Data Logger for Greenhouse Using Cloud Computing

This paper presents the detection of real time temperature, relative humidity and object distance using raspberry pi. Knowledge of temperature and relative humidity course during a certain time is needed in scientific, medical and industrial applications. For recovery of this information from various devices such as manual readings, chart recorders or data loggers can be used. A data logger is an electronic device that combines analog and digital measurements with programming methodology to sense temperature, relative humidity and other parameters such as voltage and pulse. The data loggers take input from the thermocouple temperature, humidity and ultrasonic and various sensors. This data is then passed to the things board(cloud) and analysis software for storing and analyzing the monitored data. The various technical milestones achieved by the researchers in this field has been reviewed and presented in this survey paper.