LIFE CYCLE TESTING OF ELECTRICAL LOADS BY DOWN COUNTER

   LIFE CYCLE TESTING OF ELECTRICAL LOADS BY DOWN                                                 COUNTER

THIS PROJECT IS DONE BY KSRM COLLEGE, KADAPA

1 S.MOHAMAD FAYAZ                149Y1A0272

2 F.ASHWAQ                               159Y5AO208 

3 N.SIDDIK BASHA                   159Y5A0218

4 P.KRISHNAVANI                      159Y5A0221

project guide:

M.Lakshmi Narayana,M.tech

Assistant professor,

ABSTRACT:

The desired number is entered through a keypad interfaced to a micro-controller of 8051 families. Upon activation, the system counts down one in each second till the set number reaches zero. A relay switches the load ON & OFF for every count thus testing the life cycle of the product.

The working life of many products such as lamps depends on the number of ON/OFF cycles it encounters. This project is designed to be used in industries for testing the life cycle of such electrical loads (lamps, motors etc) using a down counter.

         This proposed system uses micro-controller of 8051 families with a keypad interfaced to it to enter a required number. 7-segment displays are used for displaying the number /count. Once the circuit is powered, the counter is set using the keypad to count down anywhere from 999 to 0. The counter starts decremented from the set number to 0 per each count and simultaneously making the load (i.e. bulb in this circuit) turn ON and OFF by a relay. Reaching the zero count it finally remains OFF.

            The project can be further enhanced by using a mono stable triggering device to stop the counter in the event of failure of the load before reaching the zero. Thus the exact life cycle of the load can be estimated.

BLOCK DIAGRAM:

       

             

HARDWARE REQUIREMENTS:

·         8051 series Microcontroller,

·         Keypad,

·         7 Segment Displays,

·         Lamp,

·         Transformer,

·         Voltage Regulator

·, Diodes, Relay, Transistor,

·         Crystal, Resistors,

·         Capacitors,

·         LED,

·         Switch etc.

SOFTWARE REQUIREMENTS:

·         Keil compiler

·         Embedded C or Assembly.

ADVANTAGES:

·         Highly sensitive

·         Visual identification with LED

·         Low cost and reliable circuit

·         Sensitivity can be adjusted

·         low power consumption

·         It is operated by 5v dc supply

APPLICATIONS:

·         Industries,

·         Offices, 

·         Hotels,

·         Bank

how to download Keil software for 8051 see video