Monitoring a greenhouse using a microcontroller-based meteorological data-acquisition system

A meteorological data-acquisition system is implemented based on an 80C32 microcontroller, which scans 10 sensors together at intervals programmable from one minute to one hour. The data are stored in a removable, non-volatile random access memory (NOVRAM) cartridge each day for one month and then transferred into a more powerful computer. This system is versatile and easily transportable. It has been used to supervise the growth of bananas in a greenhouse situated in a remote site near Tizi Ouzou. The production of bananas is found to be optimum for high values of relative humidity and temperature varying around 25°C within the greenhouse.