Auto Gear Shifting For Bicycle

 Auto Gear Shifting For Bicycle: Mechanical Engineering Project

Good Project for bicycle lovers. At the time of Global Warming this is fruitful too.




The Browning Automatic Bicycle Transmission

News Article about Bicycles with automatic gearshift

Automatic Transmission project

Related PDF
Automatic Bicycle Gear Selector

Cavitation Jet Erosion Test

Cavitation Jet Erosion Test: Mechanical Engineering Project

Standard Test Method for Erosion of Solid Materials by a Cavitation Liquid Jet.This test method covers a test that can be used to compare the cavitation erosion resistance of solid materials.




What wiki says about
Cavitation
More about Jet Cavitation Test
Material erosion testing 

Mechanical Engineering Projects Part 2

3D Solar Cells  : Very Effective Design of solar cell. Used to enhance the efficiency of Solar Cell Significantly.

Hydraulic Car Lift : This project deals with fluid and how we can use it to lift the car.

Power Generation using Footsteps : Piezoelectric techniques used to convert energy of our footsteps in electricity.

Stair climbing Hand Cart : Handcart which would help you carry heavy materials upstairs.

Car Monitoring System

Highway Wind Turbines : Use wind turbines at the divider of the road to generate electricity.

Power generation using Railway Tracks : See how we can use Variable capacitor for generating electricity.

Stirling Engine Mini RC Car

Nitro Cars  : Cars powered by methane and nitro methane.

Fruit Picking Robot : Do you think robot should work in the garden? If yes , then this project is for you!

Soccer Playing Mini robot : Do you like robots and soccer both then you would like this idea too.

Solar Powered Steam Engine

Solar Turbine Generator : How we can use solar powered steam engine to generate electricity.

Wind Powered Drip irrigation System

Solar Powered Water Pumps

Solar Powered Bicycle : Power your electrical cycle using solar energy

Solar Powered Bag

Solar Powered Water Purification System

Pedal Powered Water Filter: Filter water throughout the year ,day or noon using the simple concept of evaporation and condensation.

Wind Mill Pump

Light Weight Floating Wind Turbine

Bio gas Powered Water Heater 

Bicycle Powered Cell Phone Charger : Have you thought about charging your cell phone using your cycle. This idea would discuss about all that.

Steam engine powered Bicycle : Whenever we thought about steam engines, the first thought comes to our mind is train engine,but have you ever thought of steam engine powered by cycle?

Mechanical Sprayer : Spray pesticides using mechanical energy instead of fossil fuel or electricity.

Mechanical Creeper for Disable Person

Water Powered Generator

Line follower Robot

Some of the earliest Automated Guided Vehicles (AGVs) were line following mobile robots. They might follow a visual line painted or embedded in the floor or ceiling or an electrical wire in the floor. Most of these robots operated a simple "keep the line in the center sensor" algorithm.

This simple robot is designed to be able to follow a black line on the ground without getting off the line too much. The robot has two sensors installed underneath the front part of the body, and two DC motors drive wheels moving forward. A circuit inside takes an input signal from two sensors and controls the speed of wheels’ rotation. The control is done in such a way that when a sensor senses a black line, the motor slows down or even stops. Then the difference of rotation speed makes it possible to make turns. For instance, in the figure on the right, if the sensor somehow senses a black line, the wheel on that side slows down and the robot will make a right turn.


Useful Material :

A Line follower Robot (PDF)
Line follower robot  (pdf)
LFR at Colorado (PPT)

Hydraulic Car Lift

We all have heard about Hydraulic lifts sometime in our life, but some of you may think that how it works or how to build one for ourselves.

Today we are going to discuss about lifting cars using Hydraulics, which is based on Pascal concept.

Why understanding Hydraulics important?

Hydraulics is a topic in applied science and engineering dealing with the mechanical properties of liquids. Fluid mechanics provides the theoretical foundation for hydraulics, which focuses on the engineering uses of fluid properties.


Concept:

Pascal's law states that the pressure applied at one point of the liquid is transmitted equally in all direction. This principal is applied in hydraulic lift, for lifting heavy objects.

We know 


Force = Pressure x Area

Therefore Pressure = Force / Area

P1 = P2 (if pressures are equal throughout).

Formula becomes F1/A1 = F2/A2

Using above formula we can lift heavy materials using little force. For e.g. here we are lifting 10 pound using 1 pound.

Flying Cars

A flying car or roadable aircraft is an aircraft that can also travel along roads. All the working examples have required some manual or automated process of conversion between the two modes of operation.

Some of you thinking that why I have discussed this project now. The main reason behind it, is recently revealed car at Holland. A flying car, which can fly for up to 315 miles at speeds of 110mph, has been produced in Holland.

Concept :

To build flying car you should read about Parajet Skycar now in production, developed by British paramotor manufacturer Parajet.

Wireless Gesture Controlled Toy

The objective of this project is to build a toy car that can be controlled by gesture wirelessly. User is able to control motions of the car by wearing the controller glove and performing predefined gestures.

This project provides a basic platform for many potential applications such as wireless controlled toys racing games, gesture human-machine interfacing, and etc.

How it works?

More info at Cornell University Page


How to build one ?

Complete details about Gesture Controlled Tank Toy

Useful Link :

Wireless USB Gesture Input System

Related Video :




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Computer Controlled wireless Robot

Computer controlled cars are mini robots which can be controlled with or without wires using our computer's input devices.

Now, question arises

Why do we need computer controlled cars?

We need computer because tasks which computer can perform can't be done by robot itself. To perform these tasks, we transfer data from robot to computer and perform processing on computer and accordingly transfer instructions back to the robot. Using this mechanism we can analyze images and data or even do video recording.

How it's possible?

Suppose , our car has camera installed and if it can relay that camera recording to our computer , computer can store that video data into our computer hard disk or by using complex algorithms can find out whether there is any in front obstacle or not. Not only that, with the help of relaying data our computer can take decisions for our robot and control it remotely.
How to build one?

Computer controlled RC Car with camera
Ashish Blog to get complete details of how to build your own 




Related PDF :

Wireless Computer Controlled Robotics Using Microcontroller
Computer controlled Robots
Nasa Final Report

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GSM Operated Robot

Mobiles are very common today and there are very few places left where mobile signals can't reach.Imagine, when you can control robots from anywhere in the world and  this is now possible with GSM operated robot.

GSM (SMS) Controlled Wireless Robot” is automatic robots which are capable of receiving signal using your mobile, for e.g. in the video given below that robot is controlled by keys dialed using mobile. When mobile user dial 6 robot starts moving forward and when user dials 3 it stops.

Other Uses :

This technology can be used to lock and open door of your house, controlling electronic appliances at your home and starting or turning off your car.

Related PDF :
GSM Based Electrical Control System



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Analysis of EGR emission reduction technique

In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide (NOx) emissions reduction technique used in petrol/gasoline and diesel engines. EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders.

 In a gasoline engine, this inert exhaust displaces the amount of combustible matter in the cylinder. In a diesel engine, the exhaust gas replaces some of the excess oxygen in the pre-combustion mixture. The principal function of EGR to reduce the amount of NOX that is produced during the combustion process Nox is created by high combustion temperature that allowed the Nitrogen and Oxygen to combined and form Nitrogen Oxide. A combustion temperature of at least 2500 degree is required to form Nitrogen oxide. We use exhaust gases to curb that temperature inside  the chamber.




Project Idea :

This idea is to understand details of the thermal and mechanical properties of the deposit layer, and how they are affected by operating conditions, The student will work with our group to improve test hardware, conduct experiments, and interpret results. It will provide hands on experience in a modern engine test cell with an advanced heat transfer study.

 

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Power Transmission without Wires

Wireless energy transfer or wireless power is the transmission of electrical energy from a power source to an electrical load without artificial interconnecting conductors. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous, or impossible.

Tesla discovered that electrical energy can be transmitted through the earth and the atmosphere. In the course of his research he successfully lit lamps at moderate distances and was able to detect the transmitted energy at much greater distances.

Uses : 
Phones are now an integral component in the daily lives of people. Smartphones give access to movies, internet, and even books. This versatility and increased use can also lead to a shorter battery life. A phone with video viewing capabilities will be a heavy load on the unit’s battery. With phones utilizing 3G and 4G technology, even heavier demands are placed on the battery. As technology improves even further to provide for a larger entertainment experience on the phone, this could also lead to further battery degradation if the current battery situation isn’t addressed. To have a fully operational phone throughout the day, a wireless energy transfer car charger can be utilized.

Related PDF :
Recharge laptops and cellphones.
Power transmission to moving vehicles.

Related Video :

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Pelton wheel Project

The Pelton wheel is an impulse turbine which is among the most efficient types of water turbines.The Pelton wheel extracts energy from the impulse (momentum) of moving water, as opposed to its weight like traditional overshot water wheel.Older turbines used water power inefficiently.The shape of Pelton turbine made it more efficient.


Useful links :

Calculations for my Pelton wheel turbine
Pelton Turbine Manual (1.6 MB)




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Talking Robots with Lego Mindstorms

From the days of "Small Wonder" TV show , I always wanted to have one robot which can talk and response just like human.To build one as Robotic Project is really interesting. This project is going to be very interesting and challenging because our robot requires not only speak capability but should have artificial intelligence to learn from its surroundings.

Architecture for talking robots consists of four main modules:

• Dialogue system
• Speech client with speech recognition and synthesis capabilities
• Module for infrared communication between the PC and the RCX and
• the program that runs on the RCX itself.

Useful PDF:

Talking Robots With LEGO MindStorms

Related Video :

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Mechanical Stair Climbing Robot

Stair Climbing Robots : Modern day robot needs to do extraordinary things in extraordinary circumstances. In a fire fighting time, there is time when it needs to climb stairs on its own , not only climb but find out when to climb and when to move forward.

To achieve that ,we need to design our robot in such a way that it can move forward as well as climb stairs easily. To achieve that , engineers use various techniques similar to innovative wheel design as shown in video.

Related PDF :
 
Stair Climber
Autonomous Stair Climbing

Related Video :
 

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PLC automatic Bottle Filling Machine

Importance of Bottle filling is realized by us when we see how many bottle we use in our daily life. Bottles are everywhere from cold drink to beer ,toilet cleaner to medicine etc etc.These bottle is filled with the help of filling machine without which it would have very difficult task. This project is about these machines.

This project is for both mechanical and electronics student because it has properties of both.
Related PDF and Docs :

Design of a Bottling Line Mechanism ( 4 MB )

Micro controller used in bottle filling plant(4.2 MB) 

Useful things to know : 
 
PLC : 
A programmable logic controller (PLC) or programmable controller is a digital computer used for automation of electromechanical processes, such as control of machinery on factory assembly lines, amusement rides, or light fixtures. PLCs are used in many industries and machines.

Related Video : 

 
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Mindstorm autonomous navigation robot

Auburn University students build a Robot capable of Autonomous navigation.In any robotics project, correct navigation plays very vital role and this project helps you out to solve this particular problem.

Useful things to know:

Lab View :  

LabVIEW is a tool for engineering students to speed up there production. It helps you to control applications with its build in libraries and drivers.

Ultrasonic Ranging Sensor :

 Transceivers work on a principle similar to radar or sonar which evaluate attributes of a target by interpreting the echoes from radio or sound waves respectively. Ultrasonic sensors generate high frequency sound waves and evaluate the echo which is received back by the sensor. Sensors calculate the time interval between sending the signal and receiving the echo to determine the distance to an object.


Light Sensor :

A photoelectric sensor, or photo eye, is a device used to detect the distance, absence, or presence of an object by using a light transmitter, often infrared, and a photoelectric receiver. They are used extensively in industrial manufacturing.

Beacon Light :  

A beacon is an intentionally conspicuous device designed to attract attention to a specific location.And in this project it is used to attract attention of light sensor connected with small motor on robot's head.

Related Video :
   

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Can Crusher Experiment

Can crushing is very important to reuse aluminum in these cans. Moreover this contribute to significantly lower the waste management problem. These can crusher can be made to work mechanically so that no electricity is needed to crush them.

Why can crushing project is important?

Process of can crushing is very complex now. Every one throw there waste including cans to the dustbin, from there it is collected to throw in a city garbage area. Waste management people collect each can from there manually. And then these cans go for recycling in a big crusher. This whole process takes large amount of time and energy. We can reduce this problem if we crush them manually or with little electricity and then use them or sell them to aluminum buyers.


Useful Links :

Plasma Dynamic Can Crusher :  A 100 micro-Farad capacitor is charged up to 10 kV which discharges through a 3 turn copper coil upon triggering the spark gap switch. The magnetic field thus produced in the coil is so strong that any soda can, within the coil, will be crushed.

Related Video :
Mechanical Can Crusher
 


Homemade Can Crusher :

 
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pneumatic vacuum cleaner

Pneumatic or pneumatic vacuum cleaners are a specialized form of models that hook up to compressed air. They commonly can accommodate both wet and dry soilage, a useful feature in industrial plants and manufacturing facilities.

Important things to know :

Compressed air is air which is kept under a certain pressure, usually greater than that of the atmosphere.This air pressure is controlled using pressure regulator which is a valve that automatically cuts off the flow of a liquid or gas at a certain pressure. Regulators are used to allow high-pressure fluid supply lines or tanks to be reduced to safe and/or usable pressures for various applications.

Useful PDF :

Pneumatic Systems 


Related Video : 



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Pipe Inspection Robot

Pipes are everywhere in various sizes. It is very difficult to do there maintenance manually and there is need of efficient engineering solutions so that cleaning of pipes can be done automatically with there maintenance.

In this project you develop robots which can be used for the purpose of inspection and maintenance of pipes.

Related PDF :

Development of mobile mini robots for in pipe inspection (650 KB)

Design of a fully autonomous mobile pipeline exploration robot

Related Video :

Main purpose of Mechanical project given below is to locate defects due to corrosion and obstacle at the inner side of the pipe line.



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Pedal operated power generating system

 
Pedal powered system can be used to recharge your cell phones, laptops or to power your camping outside. This is just a start but in future if it gets implemented in local exercise parlor and in every bicycle in a optimized way , it can produce electricity on large scale. Moreover , this method used successfully in recent wall street demonstration.



Things to know : 

Alternator : An alternator is an electromechanical device that converts mechanical energy to electrical energy in the form of alternating current.

Alternators generate electricity using the same principle as DC generators, namely, when the magnetic field around a conductor changes, a current is induced in the conductor. Typically, a rotating magnet, called the rotor turns within a stationary set of conductors wound in coils on an iron core, called the stator. The field cuts across the conductors, generating an induced EMF (electromotive force), as the mechanical input causes the rotor to turn.

Inverter : An inverter is an electrical device that converts direct current (DC) to alternating current.

 
Related Video :

With the help of an alternator, mountain bike and an inverter, we can run a human-powered 220 Watt food processor as shown below :

 

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