Washing Machine Embedded System Analysis

process Machine Embedded formation AnalysisIn this fol measlying assigning we atomic number 18 going to see about the Embedded brass and how it is implemented in home application and there is few reference about the wording used in the introduce system and there few application of the embed system.Embedded systems argon basic electronic devices used to control, monitor or assist the operation of equipment, machinery or a plant. The choice of word embedded reflects the fact that these are integral part of the system. Uses of embedded system in our real number life are increasing day by day. Children need such systems to play video games and to run for chocolate vending machine Housewives need embedded systems for microwave, TV, music system, and other system appliances.ABOUT EMBEDDED SYSTEMAn embedded device asshole range from a relatively simple product for ex. a toaster to complex mission critical applications such as those used in avionics. A typical embedded device imp art have twain computer hardware and software components. The hardware could be micro components such as embedded microprocessor or micro controller. Microcontroller is relatively small, has an on chip memory, an I/O controller and other supported modules to do processing and controlling tasks. The software consists of applications that coif dedicated tasks and may run on Real time operating system which will be explained later in this unit. Embedded System may be either an independent system or a part of a large system. It is specialized computer system but not a general purpose workstation like a desktop or a computer. such kind of systems is housed on a single microprocessor board with programs which are stored in ROM (Read Only Memory). Embedded system is unremarkably a compact, port adequate and atomic reactor produced electronic devices. In the early days, embedded systems were designed using microprocessors like 8085. But nowadays, we are using a wide range of processors from other manufacturers. forward we want to the basic of an embedded system, we should see a wide range of its applications. In fact, almost all modern electronic devices use some pick out of embedded system technology inner(a) them and we always come across such devices DVD players, air conditioners, printers, attendance machines, hand phone, digital camera, ATM machines, we will see some examples of embedded system in section 1. Now it is time to give a right definition.Definition Embedded Systems are devices which are used to control, monitor or assist the operation of an equipment, machinery or plant. The term control defines the main function of Embedded System because their purpose is to control an position of a physical system such as pressure, temperature and so on. Also the term monitor defines the progress of activities.Embedded Systems are extremely common in the home, vehicle and the workplace. At Home Washing Machines, dish launderers, ovens, central heating syst em, burglars alarms, etc. beat back Vehicle Engine management, security (locking or antitheft devices), air conditioning, brakes, radio etc. In Industry Commerce Machine control, factory automation, robotics, electronic commerce office equipments.IMPLEMENTATION OF EMBEDDED SYSTEM IN WASHING MACHINEWashing machine supports three functional modesi) Fully Automatic Mode In fully automatic mode, once the system is started it perform independently without user mental disorder and after the completion of work it should notify the user about the completion of work. This mode instantaneously sense cloth quality and requirement of pissing, water temperature, detergent, load, washout wheel around time and perform operation accordingly.ii) Semi-Automatic Mode In this semiautomatic mode in which washing conditions are predefined. Once the predefined mode is started the system perform its job and after completion it inform the user about the completion of work.iii) Manual Mode In this mode, user has to specify which operation he wants to do and has to provide related information to the control system. For example, if user wants to wash clothes only, he has to choose wash option manually. Then the system ask the user to enter the wash time, amount of water and the load. After these data are entered, the user should start the machine. When the specified operation is completed system should inform the user. ring that Modes should be a selectable by a keypad.A washing machine may have a System Controller (Brain of the System) which provides the power control for conglomerate monitors and pumps and even controls the display that tells us how the wash staves are proceeding.Driving MotorWater pumpSystem ControllerDisplay PanelSensorInverter unit of measurementThe working of these components is as followsi) Display Panel It is a touch panel screen to control all the operations of a machineii) Sensor It measures the water level and appropriate amount of soap. Input dev ices for automatic washing machine are sensors for water flow, water level and temperature door switch selector chief or buttons for settings such as spin speed, temperature, load size and types of wash cycle required.iii)Water Level Sensor It indicates beep sound when water level is low in washing tub. Door Sensor It indicates beep sound when all clothes are washed that means now you can open the maching door and also you can move to your next phase. Next phase will be dry Phase. This phase also follows same concept for drying the clothes.iv) Driving Motor Motor can rotate in two directions either reverse or forward. The forward direction drives the current in forward direction and ram rotates forward. The reverse direction driver does the opposite of it. A washing machine can maintain single motor in fully automatic or double motor in semi-automatic washing machine.Sequence of washing the clothes with this can be explained in few steps as follows1) empower on your dirty clothe s on to the wash tub for washing2) Put the detergent Soap (of your choice like Surf n Excel etc.)3) Put ON the tap, water rushes inside the tub. Embedded Systems4) If its electronic control , then by the press of the keys ,you could program , if its mechanical it shall something like an mechanical switches wherein you are suffered to operate for setting the wash time.5) Now the wash motor rotates and washes the clothes and gives you a beep sound6) Now your clothes are washed remove it from the wash tub and put it on the spin tub and program it accordinglyafter spinning clothes are dried and you are allowed to hang it for proper drying in sunlight.The fully automatic also comes in two category front effect as well as top loading.i) Front loading is the one wherein you are given an opening to put clothes in on the front side.ii) Top loading is on the top.iii) System Controller such(prenominal) Component is used to control the motor speed. Motor can move in forward direction as well as reverse direction. System Controller reads the speed of motor and controls the speed of motor in different phases such as in Washing, Cleaning Drying etc. All kinds of Sensors such as Door Sensor, Pressure Sensor and Keypad, Speed sensor are also maintained by this.iv) Water Pump The water pump is used to recirculate water and expire out the dirty water. This pump actually contains two separate pumps inside one The bottom half of the pump is hooked up to the drain line, while the top half recirculates the wash water. The motor that drives the pump can reverse direction. It spins one way when the washer is running a wash cycle and recirculates the water and it spins the other way when the washer is doing a spin cycle and draining the water.PROGRAMMING LANGUANGE USED IN EMBEDDED SYSTEMEmbedded systems are application specific computers that interact with the physical world. Each has a diverse set of tasks to perform, and although a very flexible spoken communication might be able to handle all of them, instead a variety of problem domain specific spoken communications have evolved that are easier to write, analyze, and compile. The choice of computer programing language is very burning(prenominal) for real time embedded software.The following factors influence the choice of languagesA language compiler should be available for the chosen RTOS (Real Time Operating System) and hardware architecture of the embedded system. Compilers should be available on multiple OSs and microprocessors. This is particularly important if the processor or the RTOS needs to be changed in future.The language should allow direct hardware control without sacrificing the advantages of a superior level language.The language should provide memory management control such as dynamic and dormant memory allocation.So, we can categorize embedded programming languages in to two parts such as hardware language and software language.computer hardware languageA hardware description langu age can be used to describe the logic gates, the sequential machines, and the functional modules, along with their interconnection and their control, in a embedded system. There are various languages used for this purpose as followsVHDLVHDL is the Very High Speed Integrated Circuit Hardware Description Language. It can describe the behavior and structure of electronic systems, but is particularly suited as a language to describe the structure and behavior of digital electronic hardware designs VHDL is an international standard, regulated by the international languages. VHDL is suitable for use today in the digital hardware design process, from specification through high level functional simulation, manual design and logic synthesis down to gate level simulation.VERILOGVerilog HDL is one of the two most common Hardware Description Languages (HDL) used by integrated circuit (IC) designers. The other one is VHDL. HDL allows the design to be simulated earlier in the design cycle in orde r to correct errors or experiment with different architectures. Designs described in HDL are technology independent, easy to design and debug, and are usually more readable than schematics, particularly for large circuits.Verilog can be used to describe designs at four levels of abstractionAlgorithmic level (much like, C language code with if, case and loop statements).ii) Register transfer level (RTL uses registers connected by Boolean equations).Gate level (interconnected AND, NOR etc.)Switch level (the switches are MOS transistors inside gates).The language also defines constructs that can be used to control the input and output of simulation.Software languageJava and C++ are other programming languages which are used extensively for embedded system design.APPLICATION OF EMBEDDED SYSTEMWe can categorize applications of Embedded System into various categories as mentioned in TableAreaApplicationsAerospaceNavigation Systems, Automatic landing systems, Flight altitude controls, engi ne controls, space explorationAutomotiveFuel Injection Control, Passenger environmental controls, antilockbraking systems, air bag controls, GPS mappingCommunicationsSwitches, HubsComputer PeripheralsPrinters, scanners, keyboards, displays, modems, Hard Disk Drives, CDROM drivesHomeOvens, Washing Machine, Digital Watch, Security Alarm, Sound RecorderIndustrial face lift Controls, Robots, Engine ControlInstrumentationData Collection, power suppliesMedicalImaging Systems, Patient monitors, Heart pacersOffice AutomationFAX machines, Telephones, Cash RegistersCONCLUSIONAn embedded system is a single purpose computer built into a larger system for the purposes of controlling and monitoring the system. These are also known as special purpose computer system. In this assignment we came to know how the embedded system is implemented in the home applications and how it is useful for the human beings in a very good manner.