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Building light automation (1)

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Building light automation (1)

  1. 1. BUILDING LIGHTING AUTOMATIONTHROUGH INTEGRATION OF DALI WITHWIRELESS SENSOR NETWORK
  2. 2. INTRODUCTIONEnergy demand is the rising problem in today’s world.So it is necessary to solve the energy crisis problem.It is essential to monitor the energy consumption in Buildings.
  3. 3. This project focuses on the integration of Digital Addressable Lighting Interface (DALI) devices in wireless sensor networks – e.g. heating ventilation and air conditioning, lighting control, alarms, etc.Final building automation system has different subsystems which are finally taken to an integrated building management system.The main purpose of this project is to provide a wireless sensor network which acquires the data from the sensing
  4. 4. Where the automation control technique automatically detect the human interference neglecting the object or material things, it turns on/off the electronic appliances.And also we apply automation lighting technique where depending upon the intensity of light the sensor controls the objects.
  5. 5. BLOCK DIAGRAM Tx: M LDR I C R HT12E O C O Reset N T R O RF TX L X tal L E R
  6. 6. BLOCK DIAGRAM Rx: M LCD LOAD1 RELAY1 I C R O C O LOAD2 RELAY2 N HD12D T R O L L E RF Rx LOAD3 RELAY3 R
  7. 7. SensorSensor is used to sense the physical quantity and convert in to electrical signal. Here LDR and IR sensor are used.LDR is light dependent resistor, it is used to sense the light intensity.when the light intensity is more the lamps are turned off and when it is less the lamps are turned on.
  8. 8. X-tal Crystal OscillatorA crystal oscillator is an electronic oscillator circuit.The Oscillator uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a very precise frequency.
  9. 9. MicrocontrollerWe can use many type of controller like PLC, PID microcontroller But here we are going to use embedded controller.From the sensor you are getting analog signals so we have to convert the analog signal in to digital signal by using opt coupler.
  10. 10. Encoder/decoderAn encoder is a device, circuit, transducer, software program, algorithm or person that converts information from one format or code to another.A decoder is a device which does the reverse operation of an encoder, undoing the encoding so that the
  11. 11. RF Transmitter/ReceiverTransmitter transmits the data when the signal Tx ready is in high.When the signal Txmt is high the receiver is ready to receive and the signal Rx ready goes to high and it receives the data.An Rf receiver receives the signal from the atmosphere, from its own
  12. 12. LCDIt displays the output from thee microcontroller.To Verify the Entire Process of working Carried out.
  13. 13. RelayRelay is a electromechanical switch. After giving supply nc gets changed in to no and no gets changed into nc.We can use many no of relays depending upon the application used
  14. 14. ConclusionThe major advantage of this project is to reduce the man power, power consumption cost.It is very useful in urban houses, offices, hospitals, Old and Physically challenged people.

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