Electronic Identification and Personal Information card using 8951 Microcontroller
Wednesday, March 17th, 2010WORKING
Card: - We can divide the cord in three major parts one receiving section, two processing section, three transmitting section. The receiving section receives the data & send to processing unit decides about the output for received data, now the output data sent to the transmitting section.
Receiving section: - In this section we are use IR sensor 1738 which detects the infra red light of switching rate 38Khz, as it detects this light its output gets low or we can say that its O/P is active low. The output of 1738 switches between TTL leaves (5V or 0V) according to the condition of the light incidenting on the sensor.
Although the O/P voltage level of 1738 follows the TTL logic but it cannot sink or source much current so we need an amplifier with higher input impedance to reduce the current drawn from 1738. Hence we use first BC548B connected with 1738’s O/P in common collector configuration which amplifies the sourcing current now to produce high sinking current we cascade this stage with another BC548B working in CE (common emitter) configuration which produce an output signal of high sourcing & sinking capacity but because of its characteristics it inverts the I/P signal. Hence to convert the signal in to its original form we again use the same ckt. cascaded with previous one, produces O/P same as it comes from sensors (1738).
Now this serial data is applied at the pin no. 10 of the microcontroller from this pin microcontroller reads the data, test for the condition using software & send the output (serial output) at pin no.11, flow chart shows the structure of the software we developed.
Here we see that some other components are connected with microcontroller there function are explained below.
12MHZ X-tal, microcontroller requires this produce the 12 MHz clock for the functioning of micro controller the two 33 pF capacitors supports the OSC. ckt.
Pin 40 of the micro controller is positive supply pin hence connected with +5V,
Pin 20 is grounded.
Pin 9 of micro controller is use to reset the micro controller the capacitor (10?F) & resistor (10K) network connected at this pin provide the switch on reset to micro controller to avoid mail functioning of unit when switched on or on battery replacement. One push to on switch is also provided to manually reset the micro controller.
Transmitting Section: – as we know that sensors only detects 38 KHz IR signal so we modulate the 38KHz signal by microcontroller’s O/P bit stream the combination of these two produces the bursts of 38Khz.
To perform this we use IC555 in astable mode & components are selected such that it produces a 38KHz pulse train of duty cycle 25%.
The ckt. works as the charging of capacitor (which decide the on time) is done by the 1K resistor & 6.8K resistor although another resistor of 22K is connected but due to the diode connected in series with this resistor, it does not affects in charging because during charging diode gets reverse biased so behave as open circuit. During the discharging of capacitor the 6.8K resistors gets disconnected from the ckt. due to the reverse biasing of diode connected with this resistor.
Now to modulate these pulses we apply the modulating signal at the pin 4 of IC this pin is used to reset the IC hence when ever we apply a low pulse at this pin the IC’s O/P immediately switch to low state & remain at that state until the pulse does not changes its state.
As we know that sensor O/p is active low hence we send the bursts for ‘0’ logic but the insertion of zero logic at pin 4 of IC will reset it hence we apply the signal at pin 4 after inverting the signal through transistor BC548B.
PC Unit: – The transmitting & receiving unit of this section work in same way as in card but here we use the PC to show the details.
In our project we are using the serial port to communicate with PC & as we know that on serial communication mode it uses the RS232 standard for which logic 1 is assigned to a voltage less than –3V & logic 0 to greater than +3V because Rx.,Tx. Sections & microcontroller provides the O/P at TTL level, we use here MAX232 as level converter which have two TTL to RS232 converter & two RS232 to TTL converter hence the O/P of serial port available at pin3 is applied to one of the two RS232 to TTL converter & I/P to serial port is fed through TTL to RS232 converter.
Applications
- This card can be used for ATM, Credit Card, Driving License etc.
- Automatic Doors.
- Attendance Counting.
- Security System.
- Infra Red Data Exchanging.
- Reservation systems with railways & airways.
- For sending important data through Card.
Limitation
- It requires a battery source.
- A separate Infra Red Card reader required.
Future Enhancement
- We can replace the devices with SMD, which will reduce the size of card.
- We can use photocells to dispense with battery source.
- We can store images for identification of card holders.
References
- Micro Processor Architecture by Ramesh S. Gaonkar .
- Op Amp by Gaikwad.
- Micro controller by K. J. Ayala.
- Integrated Electronics by Millman & Hawlkiwas.
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can u pls send the source code for this project
good day can u send me the complete details of this project at my email chitobuknoy18@yahoo.com
Pls send me the code and full details for this project..
can u plz send me the code for this project.i m working on it..its urgent
sir, can u please mail me the details of this project along with its source code.. I am really interested in this project,and i have to submit project progress in college in last week of july…
sir, can u please mail me the details of this project along with its source code.. I am really interested in this project,and i have to submit project progress in college in mid week of aug…
arunstorm90@gmail.com
sir, can u please mail me the details of this project along with its source code.. I am really interested in this project,and i have to submit project progress in college in mid week of aug…
can u plz send me ckt dig…i like this project i want to do this project
can u plz mail me d details of dis project. i really like tis project
sir, can u please mail me the details of this project along with its source code.. I am really interested in this project,and i have to submit project progress in college this week
Hello Sir,
I m interested in doing this project. Can u plz send me the details of this project as early as possible.
Thank you
sir,i am really interested in this your project.sir,plz send me this project sours and code.
sir, can u please mail me the details of this project along with its source code.. I am really interested in this project,and i have to submit project progress in college
sir, can u please mail me the details of this project along with its source code.. I am really interested in this project,and i have to submit project progress in college it’s very urgent…
sir, can u please mail me the details of this project along with its source code.. I am really interested in this project… and I have to submit project in due time…
can u please mail me the details of this project along with its source code.. I am really interested in this project… and I have to submit project in due time for my senior project
plz send me the source code……………….I am really interested in this project… and I have to submit project in due time…
I’m a final year student of ECE Branch……and i want 2 do this project in final yr will u plz send me source code & details of project…plzzzz
sir, can you please give me the source code. please mail me the details and source code.
Please send me the souce code or full detail of ” Electronic Identification and Personal Information card using 8951 Microcontroller ” …
Please send me the souce code or full detail of ” Electronic Identification and Personal Information card using 8951 Microcontroller pls, its important for me
Hi, in the first thanks for help and support.. finally plz plz send for me the sourse code and detail for”electronic identification and personal information card using 8951 microcotroller” as soon as posible.
Hi.. please send to me the sourse code and details for “electronic identification and personal information card using 8951 microcontroller” as soon as posible.
hey
i want to do this project as my final year project,so please send me the details of
this project.
Hi… i want to make this project as my final year major project , so please send me the details and software program asap to my email id……
thanx in advance………..
Hi, i need the source code and details for my project pls……
this is my email chernhweel4@gmail.com
wow:D tis is rely amazing.. i want to do this project in ma final year.., can u pls send me thid project to ma mail ID??
lukin forward to ur mail:)
hello sir,
can u please mail me the details of this project along with its source code.. I am really interested in this project… and I have to submit project in due time…
plz send me the details of project as soon as possible…
nice
sir, could you send the source code for this project…….. i am looking forward for your mail. thank you sir…
Dear sir,
I want the source code and schematic
sir
pls send me the details such as source code and the related details required to go forwrd wid thid idea.
Is it possible to Do this Project using VLSI(xilinx) technology ??
Pls Reply ,
hi,
i m really interested in this project
i can have a go @ it if u can help me out by giving source codes for the microcontroller in my email id -sreplbhopal@gmail.com
eagerly wating
Thank you
please send the over all information about the project
please send me the overall block diagram for card
plz send me the code and card block diagram.
hi i liked ur project…would u pls snd me the souce code and otr details regarding this project…my id is nisargh_dx@yahoo.com.. hope ull snd it soon
i’m interested in this project. i tinking to do it for my final year project, but how i can present he model before my pannel?
hi,
i m really interested in this project
i can have a go @ it if u can help me out by giving source codes for the microcontroller in my email id nelluriharish@gmail.com
eagerly wating
Thank you
Amazing idea …i lyked it veery much…i want to do this project on fest will you please send me source code and project details
please send me detial and coding of this project as early as possible i have choose this project but i haven’t coding please
sir ur idea is gr8 n i wld like to do this as my project so kindly send me details
sir i want to details of “Electronic Identification and Personal Information card using 8951 Microcontroller”
my project is similar to this “PC BASED SECURITY ALARM TRANS MISSION”
DETAILS:-The project involves authorized access to a building through automated gate. The project required a sensing device(RFID) which is used to check the authenticity of vehicle and if this is authorized then gate will open automatically and if it is unauthorized and try to access the building from the boundary then the system will automatic generate the alarm.
The all process controlled by pc
if someone has not specific tag then he may allow by enering provide password.
plz replay me
my ph no-9450182801
I like the idea of the project and I would love to implement it as my senior year project. So if you could please email me the details with the source code, I would very much appreciate it.
Hi, i need the source code and details for my project pls……
please send me the overall block diagram for card
asamr_ha@hotmail.com
sir,
I m interested in this project . please send me the source code ,detail and programming of controller AT manoj0342@gmail.com
waiting 4 ur reply
thank you