IoT Based Automatic Transfer Switch with Monitoring andControl System

Abstract

A blackout may cause severe difficulties in a house or company. Loss of data, productivity, security, and money are all risks. Manual transfer switches, such as those used for transferring load supply between the main AC power source and a generator, are often employed. Somehow, these transitions are conventional, hassle, and dissatisfying to customers. The researchers have developed an IoT-based automatic transfer switch between two power sources integrated with a monitoring and control system to aid these circumstances. The established system includes a microcontroller block, power supply block, voltage and current sensor, modules (for wireless connection), display, and load. The primary power supply voltage sensor was connected to the microcontroller for input (VECO). Thus, the microcontroller has produced the output signal and sent it to the relay module. Thus, the relay driver enabled the proper relay, as instructed by the microcontroller. Moreover, the backup power source is being utilized (Solar Inverter). The load supply's power source was visible in the Blynk application. As technology improves, consumers can have both manual control access and wireless experience via mobile phones. The 7W LED bulb was used for the system's switching delay. The tests conducted were automatic switching delay and monitoring tests through SMS notification and the Blynk application. It was found out that such delays existed while switching power sources. Switching delays were examined and compared in two cases, resulting in a difference of 6.72 seconds in their shortest time delay. In conclusion, the designed system in this study still met the objectives that provide automation, manual control, and monitoring regardless of the delays mentioned above. This study can be further improved by using a microcontroller unit with a higher clock speed and memory to accommodate all the codes and functions for each component implemented.