The Android Base Automatic Phase Selector and Overload Protector using GSM are designed to automatically supply continuous power to a load through one of the three sources of supply that are: solar, mains, and generator or to combine the sources to supply the load all together at the same time.
The three socket outlets represent the three sources. The socket outlets are connected to three steps down transformers which reduce the input 230V or 240V to 12V AC. This 12V AC is rectified and regulated to 5V DC which acts as an input to the microcontroller.
Once the microcontroller recognizes the presence of a given source, a relay module is a switch to an ON position. In case all three sources are available, an android app is used to select the source of choice.
When the amount of load demand increases beyond what can be handle by one source, a mobile app is used to bring onboard another of the remaining two sources so as to meet the load demand. Filament bulbs were used as a load for demonstration purposes which draws power from solar.
When solar fails to supply power, automatically the source will shift to the main grid and if the main grid fails, the load will automatically be supplied by the generator. But if solar come back when any one of the two sources is ON, the system will automatically shift to solar.
The output of any source is connected to the voltage stabilizing circuit which stabilizes the voltage to 220V AC by a mean of an auto-transformer that has many taps.
When there is any fluctuation in the input voltage, the voltage sensor will activate the relays to switch between the taps of an auto-transformer so as to either reduce or increase the incoming voltage so that the load voltage requirement is met.
From the stabilizing circuit, the load is connected through an overload protector circuit which monitors the amount of current drawn by the load. Once the current goes beyond the normal value, the last load connected is automatically isolated from the source while leaving the original part of the circuit connected.
At the same time, a message is sent to the operator by GSM notifying that the circuit is overloaded. The operator can decide to operate the loads by means of GSM or by sending a text message “normal” to restore the system operation to use an android app.
Design and Implementation of Android Base Automatic Phase Selector and Overload Protector using GSM (Machine Learning)
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