FULLY AUTOMATED SOLAR GRASS CUTTER

Design and Development of Floor Cleaner Robot (Automatic and Manual)

This floor cleaner robot works in two modes “Automatic and manual”. All hardware and software are controlled by AT89S52 microcontroller. This robot can perform sweeping and mopping task. RF module have been used when robot and remote having more than 50 meters. This robot cannot perform with IR sensor for obstacle detection and automatic water sprayer pump. Four motors are used, two for cleaning, one for water pump and one for wheels. Two channel relay circuit used to drive the motors one for water pump and another for cleaner. In the automatic mode robot control all the operations itself and change the path in case of moves detection and moves backward. In the manual mode, the keypad is used to operate robot. In manual mode, RF module has been used to transmit and receive the information between remote and robot. The whole circuitry is connected with 12V battery.

Solar Powered Vision Based Robotic Lawn Mower

This solar powered vision based robotic lawn mower is an automatic lawn mower that allows the user to the cut their grass land with minimal effort. Unlike other robotic lawn mowers on the market, this design of Lawn Mower requires no perimeter wires to maintain the robot within the lawn and also with less human labour in manual mode. There are some pre define patterns installed in the robot, in automatic mode operation no human labour needed for the machine and the automatic mode helps to cut different patterns in the lawn with less time and easily. This machine always avoids and detects objects and humans. And also it detect the land boundaries and start moves in predefine pattern with the help of installed camera and MATLAB programming.

Cars that would park automatically or that would be able to manage a stop-and-go mode in traffic jam are potential industrial application of non-holonomic motion planning. A previously planned trajectory may have to be deformed during execution to avoid collisions. There are several reasons for that:

The non-holonomic path deformation method is a generic approach of the online trajectory deformation issue. There are several non-holonomic systems. But the main principal behind them is same. First we need to compute a potential function along the path to the obstacles decreases. Then a direction of deformation is computed in order to make this potential decrease that is for the path to get away from obstacles. The seminal idea of the method is then to establish a relationship between the direction of deformation and the inputs of the system represented by the mobile robot. Then we compute input perturbations that will make the path go in direction of deformation. If we want indeed the deformed path to be feasible by the system, not any path deformation that would make the potential decrease is admissible. The steps of this method is,

Bandara W.M.N.N
2950
Member of ENIGMA

Uses of ultrasonic sensors

Ultrasonic sensors present one of the most cost-effective digital distance measurement systems available for mobile applications.

In industrial applications, ultrasonic sensors are characterized by their reliability  and outstanding versatility. Ultrasonic sensors can be used to solve even the most complex tasks involving object detection or level measurement with millimeter precision, because their measuring method works reliably under almost all conditions.

Triangulation and filtering techniques were used to provide distance and bearing information. A modeling technique based on image processing was used to optimize the arrangement of the sensors. Experimental testing verified the accuracy of the modeling results.

*A  system with high speed of operation for an advanced agriculture process which includes cultivation based on robotic platform.

*The robotic system is an electro-mechanical and artificial agent which is steered by DC motor which has four wheels.

*The farm is cultivated by the machine, depending on the crop considering particular rows & specific columns.

*The infrared sensor detects the obstacles in the path and it also senses turning position of vehicle at end of land.

*The seed block can be detected and solved using water pressure.

*The machine can be controlled remotely and solar panel is used to charge DC battery.

*Assembly language is used in programming the micro-controllers. The micro-controller is used to control and monitor the process of system motion of vehicle with the help of DC motor.

Algorithm Implementation

W.M.D.L.Wahundeniya

ICT/2012/2013/063

3094

Taking electricity from solar power is a very common topic since from the past. But it is a very common topic nowadays because of the rising electricity bill. That is why people tend to use solar power mostly. Many households and also huge companies use solar power in their daily processes.

Now our government has launched a new project called “Surya bala sangramaya”. From that project you can make money. If you use solar panels at your house, your electricity bill can be reduced. And when your production become higher than usage, your bill will become zero and government will pay you for the extra electricity produced from your solar panels. That electricity will be contributed to the national electricity supply. This project is carried under the Sri Lanka Sustainable Energy Authority.

The method that people are paid for their electricity contribution to the national supply is called as Net Accounting. According to net accounting, people are paid Rs.22 per one unit up to 7 years. From the 8^th year, they are paid Rs.15.50 up to 20 years.

There is another method called as Net Plus. From that, people are paid for each and every unit of electricity they produce by their solar panels. That electricity is taken by government. Then the households have to use the electricity produced by the government as in usual way.

Everyone can contribute to energy saving.  You can either select either net plus or net accounting. Hurry up and save the energy!!!

                                                                                  Bandara W.M.N.N

                                                                                  2950

                                                                                 Member of ENIGMA

Solar energy is a renewable resource. A renewable resource is a resource that is able to be replaced or replenished, either by the earth's natural processes or by human action. Solar

energy is available at varying proportions almost everywhere on earth. It cannot be depleted

unlike the fossil fuel based energy resources.

Solar energy is a clean energy resource. It does not involve the emission of Green House Gases (GHGs) that are believed to be responsible for the worsening global warming of our planet, Earth.

Solar energy refers primarily to the use of solar radiation for practical ends. However, all renewable energies, other than geothermal and tidal, derive their energy from the sun. Solar technologies are broadly characterized as either passive or active depending on the way they capture, convert and distribute sunlight. Active solar techniques use photo voltaic panels, pumps, and fans to convert sunlight into useful outputs. Passive solar techniques include selecting materials with favorable thermal properties, designing spaces that naturally circulate air, and referencing the position of a building to the Sun. Active solar technologies increase the supply of energy.

 M.R.F. Rifna

ICT/12/13/078