FOOT STEP POWER GENERATION SYSTEM
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Introduction:
Man has needed the used enery at an increasing rate for his sustenance and welll being ever since he came on the earth a few millliion years ago. Primitive man required energy primarily in the form of food. He derived this by eating plants or animals, Which he hunted. Subsequently he discovered fore and his energy needs increased as he started to make use of wood and other bio mass to supply the energy needs for cooking as well as for akeeping himself warm. With the passage of time, man started to cultivate land for agriculture. He added a new dimension to the use of energyby domesticating and training animals to work for him.
WORKING PRINCIPLE
The complete diagram of the foot step power generation is given below. Only one step is inclined in certain small angle which is used to generate the power. The pushing power is converted into electrical energy by proper driving arrangement. The rack & pinion, spring arrangement is fixed at the inclined step. The spring is used to return the inclined step in same position by releasing the load. The pinion shaft is connected to the supporter by end bearings as shown in fig. The larger .sprocket also coupled with the pinion shaft, so that it is running the same speed of pinion. The larger sprocket is coupled to the small cycle sprocket with the help of chain (cycle). This larger sprocket is used to transfer the rotation force to the smaller sprocket. The smaller sprocket is running same direction for the forward and reverse direction of rotational movement of the larger sprocket. This action locks like a cycle pedaling action.
The fly wheel and gear wheel is also coupled to the smaller sprocket shaft. The flywheel is used to increase the rpm of the smaller sprocket shaft. The gear wheel is coupled to the generator shaft with the help of another gear wheel. The generator is used here, is permanent magnet D.C Stepper Motor. The generated voltage is 12Volt D.C. This voltage is further amplified using IC MC34063 DC-DC convertor and is stored to the Lead-acid 12 Volt battery.
The battery is connected to the inverter. This inverter is used to convert the 12 Volt D.C to the 230 Volt A.C. This working principle is already explained the above chapter. This 230 Volt A.C voltage is used to activate the light, fan and etc. By increasing the capacity of battery and inverter circuit, the power rating is increased. This arrangement is fitted in shopping complex, college and wherever the large people walking on the foot steps simultaneously.
PROBLEM DEFINITION:
Some developing countries and newly-industrialized countries have several hours of daily power-cuts in almost all cities and villages because the increase in demand for electricity exceeds the increase in electric power generation. People in these countries may use a power-inverter (rechargeable batteries) or a diesel/petrol-run electric generator at their homes during the power-cut. The use of standby generators is common in industrial and IT hubs. This ultimately increases the shortage of power.
EXISTING SYSTEM:
Other people have developed Rack-pinion and pulley (mechanical-to-electrical) surfaces in the past, but the Crowd Farm has the potential to redefine urban space by adding a sense of fluidity and encouraging people to activate spaces with their movement. The Crowd Farm floor is composed of standard parts that are easily replicated but it is expensive to produce at this stage. This technology would facilitate the future creation of new urban landscapes athletic fields with a spectator area, music halls, theatres, nightclubs and a large gathering space for rallies, demonstrations and celebrations, railway stations, bus stands, subways, airports etc. like capable of Harnessing human location for electricity generation.
PROPOSED SYSTEM:
NEED FOR THE SYSTEM:
Proposal for the utilization of waste energy of foot power with human locomotion is very much relevant and important for highly populated countries like India and China where the roads, railway stations, bus stands, temples, etc. are all over crowded and millions of people move around the clock. This whole human/bio energy being wasted if can be made possible for utilization it will be great invention and crowd energy farms will be very useful energy sources in crowded countries. Walking across a "Crowd Farm," floor, then, will be a fun for idle people who can improve their health by exercising in such farms with earning. The electrical energy generated at such farms will be useful for nearby applications.
AVERAGE WEIGHT OF LOCOMOTIVE AREA:
This parameter is used to determining the primary spring tension of the setup. For example, if the project is installed in a higher secondary school, the spring tension must be able to withstand the loads of different students almost in same age group, staffs etc. This gives the average weight of 65 to 70 kg. So the spring tension must withstand 5 kg less and more to average weight. The whole weight will not be acting on the spring tension alone but on the hinges of the flooring system also. This parameter also has an influence over the hinge arrangement of flooring system.
But this varies in case of a railway platform where people of different age group moves. The average weight may vary up to 75kg to 85 kg. This would give required compression to weight group of 70kg to 90kg and considerable compression to weight group below 70kg and would able to withstand the weight group of above 90kg. This average weight varies from place to place.
POWER GENERATOR:
We have used two 6V AC dynamo as the power generator for this project. The main advantage this provided was the small rated speed required to produce power of 6 watts and a current of 1A in each of the dynamo.
The total current accounted for the two dynamo was 2A and this was rectified and stored in a 6W dry battery. This battery will get charged fully within 3 hours when charged using power producing platform. This time will be considerably reduced when we use number of dynamos to charge a single 6W dry battery.