It is a new technology.

1. Under the Supervision of
Asst. Prof. Pratyay Konar
DEPARTMENT OF ELECTRICAL ENGINEERING (4th Year Student)
By
SOUMYA DATTA
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2. PRESENTATION OUTLINE
1. Introduction to Solar Integrated SMART Street Lighting System
2. Solar power & it’s conversion to electricity
3. General Design of SMART Street Lights
4. Electrical components required for implementation
5. Implementation of the circuit
I. Charge Controlling Circuit
II. LDR based Circuit
III. Alternative Power Supply
IV. Controlling Circuit
V. Adjustable Voltage Regulator
VI. Complete Circuit
6. Conclusion & Future Scope of the project
7. Appendix
8. Bibliography & References
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3. Introduction to Solar Integrated
SMART Street Lighting System
 SMART Street Lighting System (solar integrated) utilizes street light
controllers which are smarter versions of the mechanical or electronic timers
previously used for street light ON-OFF switching operation using the solar
energy for it’s power.
 They come with energy conservation options like twilight saving, staggering or
dimming as they are designed primarily for energy efficiency.
 A comprehensive system usually consists of: -
 LED
 Control unit
 Sensors installed in each lamp pole or group of lamp poles
 Communication units
 Management center
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4. Benefits of SMART
Street Lighting System
The benefits of this type of technology can be:
 Energy savings
 Reduction of maintenance cost
 Reduction in CO₂ emissions
 Reduction of light pollution
 Maintenance of safety
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5. Solar power & it’s
conversion to electricity
 Solar power is the conversion of sunlight into electricity, directly using
photovoltaic (PV). Solar Cells converts light into an electric current using the
photovoltaic effect.
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6. General Design of
SMART Street Lights
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7. Primary Electrical Components
required for the setup
Solar Panel
(12V,10Watt)
 Solar panel refers to a
panel designed to absorb
the sun's rays as a source
of energy for generating
electricity or heating.
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8. Primary Electrical Components
required for the setup
Light Dependent Resistor
(LDR)
 A light dependent resistor works on
the principle of Photo conductivity.
 Photo conductivity is an optical
phenomenon in which the materials
conductivity reduces when light is
absorbed by the material.
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9. Primary Electrical Components
required for the setup
Battery (12V)
o An electric battery is a device
consisting of one or more
electrochemical cells with
external connections provided to
power electrical devices.
Transformer(230/12 V, 1Amp)
o Electrical power transformer is a
static device which transforms
electrical energy from one circuit
to another without any direct
electric connection and with the
help of mutual induction
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10. Other Electrical Components required
for the setup
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Voltage Regulator
Capacitor
Relay (12V)
N-P-N Transistor

11. 11
DIODE Double Pole Switch LED
Resistor Connector
Other Electrical Components required
for the setup

12. Implementation of the Circuit
Charge Controlling Circuit
Line diagram
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13. Implementation of the Circuit
Charge Controlling Circuit
Fabrication
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14. Implementation of the Circuit
LDR based Circuit
Line diagram
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15. Implementation of the Circuit
LDR based Circuit
Fabrication
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16. Implementation of the Circuit
Alternative power supply
Line diagram
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17. Implementation of the Circuit
Alternative power supply
Fabrication
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18. Implementation of the Circuit
Controlling circuit
Line diagram
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19. Implementation of the Circuit
Controlling circuit
Fabrication
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20. Implementation of the Circuit
Adjustable Voltage regulating circuit
Line Diagram
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21. Implementation of the Circuit
Adjustable Voltage regulating circuit
Fabrication
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22. Implementation of the circuit
Complete Circuit
Perspective-1
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23. Implementation of the circuit
Complete Circuit
Perspective-2
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24. Implementation of the System
Complete System
Final Perspective
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25. Conclusion
The following conclusions can be drawn after completion of the project:
 Solar integrated SMART street lighting system is one of the leading
innovations in the 21st century as it is not only eco-friendly but also more
energy efficient.
 Automatic controlling by LDR and its circuit leads to more energy
conservation/lesser energy losses.
 As the system is controlled by a controlling circuit including charge
controller, 2-pole switch and 3-pole switch, the system is very protective,
low maintenance cost and very useful.
 As they are automatically controlled using LDR, dimming and brightening
are the key points of the SMART street lights.
 The governments of different countries should initiate this type of solar
integrated projects to further promote a healthy environment for humans as
it is pollution free.
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26. Future Scope
 The initial investment in solar LED street light system remains a major
problem. However, the efficiency of the solar cells is increasing, while the
price is decreasing. At same time, the efficiency of the LED light is in a rapid
increase, but the prices are lower. So following development of the outdoor
lighting technique, the solar LED street light system has shown us that it will
have promising applications and infinite vitality in future.
 We can use AC lamps or lights instead of DC LED’s by using a inverter which
is used for converting DC to AC voltage.
 We can use dual axis solar tracker for efficient charging of battery from solar
energy. It also helps to generate more power from solar means. If we want to
increase the load this will be one of the most efficient methods.
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27. Appendix
Equipments Quantity Specifications
POT 2 10KΩ
NPN Transistor 2 BC547
Relay 2 12V
Resistor 4 1KΩ, 1KΩ, 500 Ω, 500 Ω
Connector 2 -
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Charge Controlling Circuit
Equipments Quantity Specifications
Light Dependent Resistor 3 -
Resistor 5 50KΩ, 150KΩ, 20 KΩ ,1KΩ, 1KΩ
Relay 3 12V
NPN Transistor 3 BC547
LED 3 -
Connector 3 -
LDR Based Circuit

28. Appendix-2
Equipments Quantity Specifications
Transformer 1 1 Amp,
Capacitor 2 1000μF, 470μF
Diode 4 IN4007
Voltage Regulator 1 IC7812
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Alternative Power Supply
Controlling Circuit
Equipments Quantity Specifications
NPN Transistor 2 BC547
Relay 1 12V
Double Pole 2-Way Switch 2 1Amp, 1Amp
Triple Pole 2-Way Switch 1 1Amp
Resistor 3 10KΩ, 10KΩ, 10KΩ
LED 3 -

29. Essentiality of Proteus in the Project
Proteus has helped us in the completion of the project technically in
recreating the design of the circuit and simultaneously checking for errors in
any kind of wirings and other important factors like voltage drops and led
tests. Without Proteus it would’ve been impossible to design the overall
circuit as any kind of errors can be pre-checked to be sure for the final
design.
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Proteus 8

30. Bibliography and References
 www.telematics-wireless.com
 www.solarpowernotes.com
 “Art of Electronics, 3rd Edition, errata”. Horowitz, Paul. April 7,
2015
 The American heritage science dictionary. Houghton Mifflin
Company. 2005
 http://www.electrical4u.com/
 Robert S. Mroczkowski, Electrical Connector Handbook Theory
and Applications, McGraw Hill
 Re-considering the economics of photovoltaic power. UN-
Energy (Report) (United Nations).
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