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RFID Interface with AVR atmega32


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Codee

Wed Aug 27 2008, 02:04AM

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Joined: Fri Aug 15 2008, 02:24AM

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I have RFID receiver with passive tags. It has very low range of about 5cm. I have to increase the range of RFID to about 3meters. plz help me.

Wanna play?

pdi33

Wed Aug 27 2008, 07:50AM

Registered Member #1329

Joined: Mon Jun 04 2007, 09:28AM

Posts: 770
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hi codee,
well, as u must be already knowing, passive tags derive their circuit power from the RF power sensed by it from the transmitter. So the only option u have is to increase the transmitter power (though i doubt it would sense as long as 3m).
Else the only other alternative is using active RFID tags.

* inspired to develop,developing to inspire *

Codee

Tue Sep 09 2008, 11:01PM

Registered Member #9843

Joined: Fri Aug 15 2008, 02:24AM

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Hello every one.

Is it possible to increase the range of RFID reader with passive tags to about 1 meter.

plz help me I am in deep trouble.

Wanna play?

pdi33

Wed Sep 10 2008, 12:32PM

Registered Member #1329

Joined: Mon Jun 04 2007, 09:28AM

Posts: 770
Thanked 185 times in 180 posts

can u post the specifications of the transmitter as well as the passive tag u plan to use? only then we can try to determine the maximum length the passive tag can be detected.

* inspired to develop,developing to inspire *

Codee

Thu Sep 11 2008, 08:54PM

Registered Member #9843

Joined: Fri Aug 15 2008, 02:24AM

Posts: 5
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I have bought a Reader card of GIGATEK model no. MF10.
and I am using the passive tags of HF 13.56 Mhz with ISO standard 14443.

The total system distance is 6cm. and working well.

If it is not possible then plz help me developing my own reader card with same tags with about 1 meter range. Kindly provide me some material about reception of tag signals. Like I have seen in one project at internet "Proximity Security System".

Wanna play?

pdi33

Fri Sep 12 2008, 09:03AM

Registered Member #1329

Joined: Mon Jun 04 2007, 09:28AM

Posts: 770
Thanked 185 times in 180 posts

hi codee,
could not find the specs of both the models u mentioned..... it would be better if u attach the specs, because while searching for the above models i came across an article which mentioned a passive tag having a range of about 20ft.so i think there could be some hope.

* inspired to develop,developing to inspire *

1nafar

Sat Sep 13 2008, 11:51AM

Registered Member #10613

Joined: Sat Sep 13 2008, 07:33AM

Posts: 20
Thanked 4 times in 4 posts

and a project:
http://www.projects-lab.com/?p=357
other links:
http://www.spychips.com/
www.rfid.org

i am amateur in english language
I beg your pardon

This post has been thanked 1 time

pdi33


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shazy | 09 Jan : 00:00

sir Ajay,can u help me regarding this problem, plzzzz

i need the trraffic light controller code along with comments, so that i can proceed what does it do, after two days i will present my project. plz send me as soon as possible, i'll b very thankful 2 u. i m waiting 4 ur reply.

shazy | 08 Jan : 23:57

hi abhinav, r u a student ?

shazy | 08 Jan : 23:46

for Mr. binu, sir i need the trraffic light controller code along with comments, so that i can proceed what does it do, after two days i will present my project. plz send me as soon as possible, i'll b very thankful 2 u. i m waiting 4 ur reply.

Ajay | 08 Jan : 21:19

thats ok.. i replied to your post. do check it

AbhinavChaurey | 08 Jan : 21:19

i will remember it next time sorry for this time.

Ajay | 08 Jan : 21:10

well there is no limit, but its better to stick to single thread till your problem is different. Like now you have posted in a new thread whereas it could be done in the previous thread only.

AbhinavChaurey | 08 Jan : 21:08

Good night to u all see u tomoro:bye

AbhinavChaurey | 08 Jan : 21:03

is there some limits for posting threads .i mean number of threads.

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