Human Presence Detection Based Room Light Controller Using PIR SENSOR

Guided by SUBMITTED BYRAVI PRAKASH VERMA Nikhil Singhia(ASSISTANT PROFESSOR) Ravindra Pathak Rishabh Bajpai

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CONTENTSObjectivesWorkingMain FeaturesHardware UsedSoftware Used MicrocontrollerPIR SensorRelayBlock DiagramCircuit DiagramApplication

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OBJECTIVE This project will deal with a system which will provide a

Automatic room appliances controlling system If any person will enter in the room then this system will

detect his entry and automatically turn on the lights and fans One more feature is that, this system will not turn on the light

in day time it will on the light only in night time or when there will be not enough light in the room

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WORKING PIR sensor will be first installed on the roof of the room PIR sensor will detect the reflected rays from surrounding

material If there will be any change in transmitted rays then PIR sensor

will detect this change and give signal to microcontroller Microcontroller will activate the relay and relay will turn ON

the room appliance

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MAIN FEATURES PIR based sensing Temperature based sensing Auto Light controlling Auto Fan controlling Microcontroller ATmega16

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HARDWARE USED Microcontroller ATmega16 PIR Sensor 12V Relay Appliances

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SOFTWARE USED All the software developed for this project will be loaded into

the memory of the ATmega16 microcontroller The language must be supported by the ATmega16 compiler The ATmega16 compiler supports C and Assembly Reasons for Selection C Programming Language Vast amount of online resources Ease of development Team members have experience of coding in C

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MICROCONTROLLER The ATmega16 is a low-power CMOS 8-bit

microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle

The ATmega16 achieves throughput approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed

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Pin Diagram of ATmega 16

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PIR SENSOROperating principle:• All objects with a temperature above absolute

zero emit heat energy in the form of radiation. • Usually this radiation is invisible to the human eye because it

radiates at infrared wavelengths, but it can be detected by electronic devices designed for such a purpose.

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• The term passive in this instance refers to the fact that PIR devices do not generate or radiate any energy for detection purposes.

• They work entirely by detecting the energy given off by other objects. PIR sensors don't detect or measure "heat"; instead they detect the infrared radiation emitted or reflected from an object.

PIR SENSOR

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RELAY A relay is an electrically operated switch Many relays use an electromagnet to mechanically operate a switch,

but other operating principles are also used, such as solid-state relay Relays with calibrated operating characteristics and sometimes

multiple operating coils are used to protect electrical circuits from overload or faults; in modern electric power systems these functions are performed by digital instruments still called "protective relays"

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Distribution Of Work into 6 Module:

• Module1: Selection and Purchasing of components• Module2: Prototype PCB designing• Module3: Mounting of components on PCB• Module4: Hardware Testing and Final PCB designing• Module5: Firmware coding• Module6: Testing of Complete System

Circuit Diagram

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APPLICATION To “Turn ON” or “OFF” all outdoor Lights For Basement or Covered Parking Area Shopping Lift Lobby Multi Apartment Complexes Common staircases Malls For garden lights In security systems

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Q&A

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THANK YOU

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