coin based water controlling system 1

of 23
8 views
PDF
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Document Description
Vjit hyd coin based water controlling system |2011-2012 CHAPTER-1 INTRODUCTION: 1.1 SOLENOID TAP: 1.1.1 Definition: A Solenoid is an electromechanical device which allows for an electrical device to control the flow of a gas or liquid. The electrical device causes a current to flow through a coil located on the solenoid valve. This current flow in turn results in a magnetic field which causes the displacement of a metal actuator. Solenoid valves come in various configurations and sizes. Solen
Document Share
Document Tags
Document Transcript
  Vjit hyd coin based water controlling system |2011-2012 Department of Electrical & Electronics Engineering   1 | Page   CHAPTER-1INTRODUCTION:1.1 SOLENOID TAP:1.1.1   Definition : A Solenoid is an electromechanical device which allows for anelectrical device to control the flow of a gas or liquid. The electrical devicecauses a current to flow through a coil located on the solenoidvalve.Thiscurrent flow in turn results in amagnetic fieldwhich causes thedisplacement of a metalactuator.   Solenoid valves come in various configurations and sizes. Solenoid valves can benormally open, normally closed, or a two way valve. A normallyopen solenoid valve allows a liquid or gas to flow through unless a current isapplied to the solenoid valve. A normally closed valve works in the oppositemanner. A two way solenoid valve has three ports; one port is common, one isnormally open and the third is normally closed. 1.1.2 Working of solenoid: The main working theory of solenoid valve is that there is a fully closed cabinetinside thesolenoid valvewith holes in different position. Each hole is connectedwith different hose, the valve is centered with two electric magnets aside, when thepower is on, the valve will be pulled to that side though the movement of the valve,the hole which is connected to the hose will be closed / open, the oil inlet is alwaysopen, the hydraulic oil flows to different hoses and push the cylinder piston by itspressure, the piston drives the piston stem and then the equipment into movement.  Vjit hyd coin based water controlling system |2011-2012 Department of Electrical & Electronics Engineering   2 | Page   By this means, the mechanical movement can be controlled by controlling theelectricity of solenoid valve. 1.1.3 Types of solenoid taps :Many variations are possible on the basic, one way, one solenoid valve describedabove:    one or two solenoid valves;    direct currentoralternating currentpowered; different number of ways and positions; 1.1.4 Applications of solenoid taps:    Solenoid valves are used in fluid power pneumatic and hydraulic systems, tocontrol cylinders, fluid power motors or larger industrial valves.    Automaticirrigation sprinklersystems also use solenoid valves with anautomaticcontroller.     Domestic washing machines and dishwashers use solenoid valves to controlwater entry to the machine.    In the paintball industry, solenoid valves are usually referred to simply as solenoids. They are commonly used to control a larger valve used tocontrol the propellant (usually compressed air or CO 2 ).    Solenoid valves are used in dental chairs to control air flow.Besides controlling the flow of air and fluids solenoids are used in pharmacologyexperiments, especially for patch-clamp, which can control the application of agonist or antagonist.  Vjit hyd coin based water controlling system |2011-2012 Department of Electrical & Electronics Engineering   3 | Page   1.2 555 TIMER1.2.1 INTRODUCTION:   The 555 timer is an integrated circuit (chip) implementing a variety of timer andmultivibrator applications. It was produced by Signetics Corporation in early 1970.The srcinal name was the SE555/NE555 and was called The IC Time Machine .The 555 gets its name from the three 5- K Ω resistors used in typical early implementations. It is widely used because of its ease to use, low price andreliability. It is one of the most popular and versatile integrated circuits which canbe used to build lots of different circuits. It includes 23 transistors, 2 diodes and 16resistors on a silicon chip installed in an 8-pin mini dual-in-line package (DIP-8)(Refer to Figure 1). The 555 Timer is a monolithic timing circuit that canproduce accurate and highly stable time delays or oscillations. The timer basicallyoperates in one of the two modes monostable (one-shot) multivibrator or as anastable (free-running) multivibrator. In the monostable mode, it can produceaccurate time delays from microseconds to hours. In the astable mode, it canproduce rectangular waves with a variable duty cycle. Frequently, the 555 is usedin astable mode to generate a continuous series of pulses, but you can also use the555 to make a one-shot or monostable circuit. The 555 can source or sink 200mAof output current, and is capable of driving wide range of output devices. Theoutput can drive TTL (Transistor-Transistor Logic) and has a temperature stabilityof 50 parts per million (ppm) per degree Celsius change in temperature, orequivalently 0.005 %/°C. Applications of 555 timer in monostable m ode includetimers, missing pulse detection, bounce free switches, touch switches, frequencydivider, capacitance measurement, pulse width modulation (PWM) etc.  Vjit hyd coin based water controlling system |2011-2012 Department of Electrical & Electronics Engineering   4 | Page   1.2.2 Pin diagram of 555IC PIN 1: GroundPIN 2: TriggerPIN 3: OutputPIN 4: ResetPIN 5: Control voltagePIN 6: ThresholdPIN 7: DischargePIN 8: +VCC
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks
SAVE OUR EARTH

We need your sign to support Project to invent "SMART AND CONTROLLABLE REFLECTIVE BALLOONS" to cover the Sun and Save Our Earth.

More details...

Sign Now!

We are very appreciated for your Prompt Action!

x