Published Paper Details:

The system is a down-counter configuration utilizing an 8051 microcontroller, designed to test the lifespan of electrical products. In industries with products like lights, bulbs, motors, etc., it is essential to assess the product's lifecycle. This lifecycle is determined by how many times the product can be switched ON and OFF while still functioning properly. Our project operates a relay switch that turns the load ON and OFF for a specified number of cycles. The system uses a microcontroller from the 8051 family, with a keypad interface for user input. It also includes a 7-segment display to show the count. When the system is activated, the user can input the desired number of cycles (0-999) for the product to be tested. The system then begins cycling the load ON and OFF, counting down from the entered value. The counter continues to decrement until it reaches zero, at which point the switching cycle is halted. The system could be further enhanced by adding a load output measuring system, which would inform the user when the load fails, thereby providing a direct indication of the load's lifespan The electrical equipment manufacturing industry provides specific specifications such as 230V AC, 1Amp, 25,000 life cycles (ON/OFF), 12V DC, 1Amp, 50,000 life cycles (ON/OFF), and so on. Therefore, it is essential to test the equipment after production. However, testing the life cycle specified by the manufacturer can be challenging. This project simplifies the process of testing the life cycle of electrical equipment. It is designed for industrial use to test the life cycles of lamps, relays, switches, motors, and other equipment. The life cycle is measured by counting the number of ON/OFF cycles the equipment can undergo while still functioning properly.