International Journal of Advancements in Electronics and Electrical Engineering
Author(s) : DILSHAD ARA HOSSAIN, S M SALIM REZA, WAHIDUL HASAN
Present Era is completely a technological age. There are so many instruments or devices are invented day by day which are used in our everyday life. Security has now become an important fact. To secure our residences, industries and bank (where higher security is required) - an “object detection and wireless signal transmission” circuit is designed. Using this circuit we will be able to protect our valuable things and make our life secured and safe. The circuits consist of NE555 timer, capacitor, diode, inductor, transistor, sound chip, speaker, led, resistor, IR led, TSOP 1738, 32 KHz crystal, trimmer, 4069UB. In this project, there are four sections: IR transmitter circuit IR receiver circuit Frequency transmitter circuit RF receiver circuit The proposed design has various desirable features such as low cost, simpler control and maintenance, and good efficiency.