Development of smart loard board to check the functionality of relay

Mohd Azhar, Mohammad Arrasyid Zakwan (2021) Development of smart loard board to check the functionality of relay. Project Report. Melaka, Malaysia, Universiti Teknikal Malaysia Melaka. (Submitted)

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Abstract

Relays are electronic or electromechanical switches that are used to open and close circuits. Relays are used to control electrical circuits. It is work by activating contacts in one circuit and closing them in another. Nowadays, most of the industrial sectors are increasingly dependent on relays. Relays are now more widely used on machines used in the sector, and their functionality must also be taken into account so that no damage occurs. Therefore, this project is made to take into account and study the function of the relay, whether in good condition or otherwise. The relay functionality depends on the value of the current through it, which is in the range of 0.0416 A to 0.1 A if more or less it is not suitable for use and should be replaced. The human ability for relay damage detection is quite limited, as the damage cannot be seen with the naked eye. Due to that, the Ard uino Microcontroller is used to connect the input along with the output to provide the test value of the relay. The LCD is used to display the required information, such as the state of the relay and the calculated current value. This smart load board uses a current sensor also known as acs712 to obtain the value of the current that can flow on the relay based on the value of the voltage used and the ohm value found on the relay. This test is used to inspect the automotive relay since it is relatively simple to inspect.

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