28-05-2012, 01:08 PM
What are the applications of electronic eye?
28-05-2012, 01:08 PM
What are the applications of electronic eye?
29-05-2012, 11:17 AM
to get information about the topic "electronic eye applications" full report ppt and related topic refer the link bellow https://seminarproject.net/Thread-electronic-eye https://seminarproject.net/Thread-electronic-eye?page=2
01-04-2013, 03:21 PM
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01-04-2013, 04:16 PM
To get full information or details of electronic eye applications please have a look on the pages
https://seminarproject.net/Thread-electronic-eye?page=2 https://seminarproject.net/Thread-electr...th-dial-up if you again feel trouble on electronic eye applications please reply in that page and ask specific fields in electronic eye applications
16-05-2013, 04:19 PM
Electronic Eye
Electronic Eye.docx (Size: 95.52 KB / Downloads: 34) THEORY AND CIRCUIT DIAGRAM Electronic eye has much use in this electronic age. Also Known as magic eye. It can be used as an automatic guest indicator at the door, If fitted on the bottom of the door entrance. Once it is installed at the door there is no need to install a call bell. It can also be used at homes or in banks as a burglar alarm. Fix the LDR to the wooden door or a locker to be protected in such a manner that when anybody tries to open it, a shadow falls on the LDR and the circuit gets activated and produce a pleasant sound through the buzzer. This electronic eye circuit uses NOT gate from CMOS I.C CD 4049. CD 4049 contains 6 independent NOT gate in one package; we have used here (a) one only. NOT gate output goes high(1) when the input pin 3 is at lower then 1/3rd level of the supply voltage. Conversely the output goes low (0) when it is above 1/3rd level. So small change in c the voltage of pin-2 is enough to change the level of output (pin-3) from 1 to 0 and 0 to 1. The output has only two states high and low and can not remain in any intermediate stage. It is powered by a 9V battery for portable use. The circuit is economic in power consumption. Pin 1 is connected to the positive supply and pin 8 is grounded. To detect the present of an object we have used LDR and a source of light. LDR is a special type of resistance whose value depends on the brightness of the light which is falling on it. It has resistance of about 1 mega ohm when in total darkness, but a resistance of only about 5k ohms when brightness illuminated. It responds to a large part of light spectrum. We have made a potential divider circuit with LDR and 220 KΩ resistance connected in series. We know that voltage is directly proportional to conductance so more voltage we will get from this divider when LDR is getting light and low voltage in darkness. This divided voltage is given to input of NOT gate. As soon as LDR gets dark the voltage of input not gate drops 1/3rd of the supply voltage and pin 2 gets high and LED or buzzer which is connected to the output gets activated. Advantage of using Logic gate is that data can be easily send to other digital interface device ie one can easily fed data to computer using parallel port or for further processing . Electronic Circuits Projects If you are interested in electronics, you are probably wondering how electronic circuits work. It is basically a component of every electronic device that you can think of. Without circuits, electrical currents have no means of traveling through the individual electronic parts of different devices. An electronic circuit commonly consists of different electronic parts such as resistors, transistors, and capacitors. The connection between these individual pieces is created through the use of wires or traces, which allows electricity to flow through. The operation of a circuit can be basic or complex depending on the combination of the different elements. Today, circuits are conventionally seen in printed boards where the various pieces of the outline are interconnected by soldering the parts to the board in creating a final product. Circuits can be categorized into three forms: the analog circuit, the digital circuit, and the mixed signal circuit. 1. Analog circuits. This is a type of circuitry that uses energy in its original form. It is best embodied by electronic circuit diagrams where the connections between the parts are represented by symbols (where wires appear as lines and different electronic pieces correspond to a specific emblem.) For analog circuits, there are two basic constructions: the parallel circuit and the series circuit. a. In a parallel connection, every single electronic part is attached to the same source of energy. The current that passes through the individual components of the circuit is divided between the pieces according to their particular resistance. b. In a series circuit, individual components are connected to each other in such that the current that will be used by a single part will be used by all the others. In this connection, a failure in one of the pieces will result to a malfunction of the whole. 2. Digital circuits. In this type of connection, energy is processed as a sample. This means that signals are taken in by the device as a representation of logical and numerical correspondents. The information, in this case, is processed and takes the form of a binary code. Digital circuits are far easier to design than analog ones. 3. Mixed signal circuits. This is a form of circuitry that uses both the analog and the digital circuits in its function. It uses a mixture of both signals in order to achieve its various utility. In most devices, analog circuitry is used to intensify the signals which prepare it for conversion into digital codes. Circuit diagrams, on the other hand, provide you with a map of the electric flow. It is a means by which you can have an idea as to how the current follows a succession in an electronic device making it possible for you visualize how it functions. The main reason for creating this representation is to provide an outline for the electric components as well as the wires and the paths that connect them. A schematic diagram allows for the convenient repair of an electronic unit. It also gives you ample time to troubleshoot an instrument at a convincingly faster pace if you know what you are doing. Electronic circuitry is part of your daily life. You may not realize it at all times but there are a number of instruments that require the use of these connections before you can utilize them. In a way, you experience a lot of convenience in living because of the reliable circuits present in the different devices that you use everyday. |
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