Followings are the main components of automatic control of street lights: Light sensor is used to sense amount of light.
So in villages, towns etc very useful and energy efficient technique. Relay is used as the we can design intelligent systems for the usage of automatic switch in this system. It releases the manual work street lights. The street lamp glows automatically at most up to per cent.
As soon as the sunlight goes under the visible region of our eyes this system automatically when it is dark if an only if there is some motion in switches ON lights if an only if there is some traffic in the the road for a short interval of time. This system is designed by integrating light sensor and automatically switches OFF during day time even pressure sensor.
As soon as the sunlight comes, visible to our though there is some motion in the road. A timer eyes it automatically switches OFF lights even though there is some motion in the road.
Such type of system is also useful for circuit is used in this project for getting a time delay reducing energy consumption. Automation is intended to reduce infrastructure where the main function is to illuminate man power with the help of intelligent systems.
Power saving is the main consideration forever as the Previously, the number of streets in the town and city source of the power Thermal, Hydro ,Solar etc. Therefore, the street lamps are getting diminished due to various reasons.
The main relatively simple but with the development of aim of the project is Automatic street power saving urbanization, the number of streets increases rapidly system Auto matic street light LDR and Auto matic street light sensor; this is to save as a result of which the number of street light has also the power.
We want to save power automatically increased in number. This saved power can Hence more electric energy is required to illuminate these lights. Earlier the street light systems were operated manually and the street lamps glows night falls ,no light falls on the LDR hence we will through-out the night time even though there is no get a HIGH output as result of this if the pressure traffic in the street which is nothing but wastage of sensor now senses any pressure on it ; it will trigger energy.
So we need smart light technology, a system the timer operated in the mono-stable mode as a which can automatically sense the visible light and result of which the Lamp will be glowing for some motion in the road. Smart Light Technology reduces time depending upon the time constant of the manual work at most up to per cent and it also timer.
Smart Light Technology is an eco friendly system as it helps in reducing light pollution. So voltage drop across the resistor ,resistors ,LDR.
The LDR acts as the light sensor that R7 will be high. This keeps the transistor Q1 ON. The senses visible light ; the switching circuit sends a collector of Q1 is coupled to base of transistor Q2.
LDR will not glow even if there is any motion in the road. The second block When night falls the resistance of the LDR increases comprises of sensor which is basically a pressure to make the voltage across the R7 decrease below sensor ; when pressure is sensed by this sensor it 0.
This makes the transistor Q1 OFF which in triggers the timer circuit i.
The relay will be energized and comprises of the timer which is operated in the armature of the relay will come to its normally mono-stable mode. Since the timer is operated in open position hence the timer circuit operated in mono-stable mode we will get a single pulse as the mono-stable mode will get the supply voltage.
When output in the output terminal of the timer. The there is some motion in the road then some force will last block comprises of Lamp which is connected to be exerted on the pressure sensor which is represented the output terminal of the timer.
In brief when as a micro switch SW1 in the circuit diagramas a result of which the timer will be triggered and the  A.
PressureSensor As shown in the figure above there will be two metallic plates A and B connected with two insulated springs. Plate A is connected to the trigger pin of the timer and plate B is grounded.
And when some force will be exerted on plate A, it will come in contact with the plate B and hence it will trigger the timer and we will get a output at the pin 3 of the timer. When the force is withdrawn from the plate B it restores back to its own position i.I would suspect the lights in modern street lights are in the thousands of watts and the final output circuits are some form of relay with a driver transistor switching it.
This in turn controlled by some Integrated Circuit connected to either a timer or light-level sensor. A street light is a raised source of light on the edge of a road or path. Modern lamps may also light-sensitive that activate automatically when the light is or is not needed.
Many street light systems are being connected underground instead of wiring from one utility post to another. automatic street light controller circuit using relays and ldr the circuit diagram of an automatic street light controller circuit is explained in this post automatic street light controller circuit using relay and ldr here in this project we are going to make a simple automatic street light controller using relay and ldr this circuit is simple.
Street lighting is a particularly critical concern for public authorities in developing countries because of its strategic importance for economic and social stability. Automatic Street Light Needs no manual operation for switching ON and OFF.
When there is need of light it automatically switches ON. When darkness rises to a certain value then sensor circuit gets activated and switches ON and when there is other source of light i.e. day time, the street light gets OFF. Automatic Street Light Control System is a simple and powerful concept, which uses transistor as a switch to switch ON and OFF the street light automatically.
By using this system manual works are .