ABSTRACT
Due to insufficient power supply from the public power utilities board, individuals, companies and government departments are resorting to the use of the renewable energy option. The solar PV energy system which consist of the solar panel, inverter and the deep cycle battery, is known to be quite a reliable and popular option. To ensure safe and efficient operation, avert system power outage at critical times, avoid unnecessary loses and damages, it becomes imperative to know the status of the battery voltage. Therefore the aim work is design and construct a wireless battery voltage monitoring system for deep cycle battery.
The design was achieved with the use of a programmed Atmega 328P microcontroller to measure the voltage of a 24 volts deep cycle battery and a Wi fi module ESP01 was connected to the microcontroller to transmit the voltage to a user at a remote location. Connected to the microcontroller is an L.C.D display which shows the voltage readings, measured by the microcontroller.
The constructed device was tested by using it to measure the voltage of a 24V deep cycle battery and recording the transmitted voltage values received at the remote location. When compared with the readings obtained with a digital voltmeter, it was found to perform satisfactorily, with an accuracy of plus or minus 0.01%. Since the results obtained from the wireless voltage measuring devices tallies with measurements obtained from both the microcontroller, displayed on the LCD and those measured by a digital voltmeter, it implies that the device performed according to the design.
