Home Security System Using Logic Gates

Assume a motion sensor has an output m that indicates whether motion is detected. Support multiple forms of detection such as motion and thermal.

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And gates can be used in a home alarm system.

Home security system using logic gates. Digital security system circuit wire loops 1 2 and 4 are connected to the a b and c inputs of 7 segment decoder 4511 ic1 respectively while the d input of ic1 is grounded permanently. Be capable ringing a mobile phone on detecting an intruder. Here the inputs for the various sensors placed on the homes doors and windows are processed by the sensor circuit which sends a high signal to one of the inputs of the and gate if any of the sensors indicates an intrusion anywhere in the house.

Lets use logic gates in the design of a home security system. Home security system a cornell university ece 476 final project by chun pai jimmy hsieh yang cao. Design a home security system using logic gates with the following requirements run on battery when there is a mains power cut.

The loops are also connected to a dual 3 input nor gate and inverter cd4000 ic2 to activate the alarm. We would like a buzzer to sound inside a home whenever motion outside is detected at night or a vehicle is detected on a driveway. M1 signifies that motion is detected.

Armdisarm upon entry of the correct password or code. There are four nand gates in 74ls00 and if we connect two of. It takes a while to think about the logic and how to actually implement it.

Since we have two magnetic switches we decided to build a simple andor gate by using 1 74ls00 chip.

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