Re: RFID interfacing with IR sensors

[apoorva ashok]

Hi everyone,

I attended STIP E at Thinklabs and am now working on a project for which i plan to use IR sensors interfaced with rfid tags to implement a wireless network. Is it possible to achieve such an interfacing???? If so, can u pls guide me on the rudimentary details???

Apoorva

[aditya_84]

What is the interface ? I mean UART, SPI, etc.

[apoorva ashok]

Hi,
its an spi interface..

[aditya_84]

Let me get this straight, do you want to make an RFID using a
microcontroller or , do you want to interface sensors to an existing
RFID ?
If you are building an RFID tag using uC then that is possible.

[apoorva ashok]

i want to interface sensors to an existing RFID.Its for a wireless parking management system. 

--
Be open: http://code.google.com/p/uniboard

[Prathmesh Murkute]

Are you willing to interface the sensors (IR --probably TSOP based i suppose) DIRECTLY to the RFID tags??
You probably would need an intelligent device in between, at least to route the information, the sensor and RFID.

--
Prathamesh P. Murkute

[apoorva ashok]

could you guide me a bit more on that??? what sort of an intelligent device would suffice? is there any book i could refer to which would give me the details???

[aditya...@yahoo.com]

Well in that case, you can interface RFIDand sensors to a microcontroller. Usually sensors can not be directly interfaced to RFID, unless the RFID you are using has provision for interfacing sensors.
What kind of sensors are you using ? How will they be interfaced ?

---------
Aditya Gawand

[apoorva ashok]

Hi all...

The project i will be doing is a parking management system. I plan to use a pair of IR sensors in each parking slot to detect whether it is vacant or occupied and then transmit the same using RFID tags to an RFID reader which will be interfaced to a microcontroller.

So far, i have only been able to obtain info about rfid tags for vehicle tracking and none similar to what i plan to implement. Is my idea implementable??? If not, what are the changes to be made???

[Bhaumik Bhatt]

I'm not sure if RFID tags for vehicle tracking and ur idea to use a pair of IR sensors to detect availability of a parking slot are linked to each other.. There seems to be a missing link between the two.. Find one and u r sorted!

Also, look for a simple application of this sort.. Do the basics first.. RFID later!
On the lines of what Prathmesh Sir said.. :P

--

Be open: http://code.google.com/p/uniboard

[apoorva ashok]

My plan was to use to use the RFID tags and reader to implement a wireless communication network between all the parking slots and the entrance to the lot.

The sensors I wished to use to detect whether the parking slots are vacant or occupied. Is it a very far fetched idea????

[aditya_84]

What exactly are you "tracking" with the RFID ? Because you don't need
to use it as radio transmitter, any other would work ( cc2500, xbee ).

[aditya_84]

I think you need a wireless communication mechanism, not a tracking
mechanism.
Like I said, cc2500 or xbee will do, no need for RFID.

On Dec 30, 9:49 pm, apoorva ashok <apoo22...@gmail.com> wrote:
> My plan was to use to use the RFID tags and reader to implement a wireless
> communication network between all the parking slots and the entrance to the
> lot.
>
> The sensors I wished to use to detect whether the parking slots are vacant
> or occupied. Is it a very far fetched idea????
>
> On Tue, Dec 28, 2010 at 11:22 PM, Bhaumik Bhatt <
>

> bhaumikbhatt.nm...@gmail.com> wrote:
> > I'm not sure if RFID tags for vehicle tracking and ur idea to use a pair of
> > IR sensors to detect availability of a parking slot are linked to each
> > other.. There seems to be a missing link between the two.. Find one and u r
> > sorted!
> > Also, look for a simple application of this sort.. Do the basics first..
> > RFID later!
> > On the lines of what Prathmesh Sir said.. :P
>

[apoorva ashok]

Hey...
I am not tracking anything with the RFID. I was planning to use the rfid to implement a wireless network only.

[apoorva ashok]

Thanks a lot.. will check those out surely...

[aditya_84]

I took a look at the paper , you need RF communication, not tracking.

On Jan 3, 12:11 pm, apoorva ashok <apoo22...@gmail.com> wrote:
> Thanks a lot.. will check those out surely...
>

>  Parking Management System Based on Wireless Sensor Network.pdf
> 1289KViewDownload

[apoorva ashok]

Ok... I looked up the cc 2500. Would it be possible for a microcontroller which has 4 different switches connected at its i/o to transmit a different message for the state of each of the 4 switches using a cc2500??

[Saurabh Gandhi]

yes, thats very much possible...basically you will need to send different messages (bytes) to the CC2500 module through the SPI /  UART interface (based on the interface that you are using) corresponding to the four switches and receive it on the other side and interpret it accordingly...

the advantage with CC2500 would be that you can have multiple transmitters and receivers (CC2500 is a transceiver) operating in close proximity without interference.

--
Regards,
Saurabh Gandhi

On Wed, Jan 12, 2011 at 9:22 AM, apoorva ashok <apoo...@gmail.com> wrote:

Ok... I looked up the cc 2500. Would it be possible for a microcontroller which has 4 different switches connected at its i/o to transmit a different message for the state of each of the 4 switches using a cc2500??

[Saurabh Gandhi]

yes, thats very much possible...basically you will need to send different messages (bytes) to the CC2500 module through the SPI /  UART interface (based on the interface that you are using) corresponding to the four switches and receive it on the other side and interpret it accordingly...

the advantage with CC2500 would be that you can have multiple transmitters and receivers (CC2500 is a transceiver) operating in close proximity without interference.

--
Regards,
Saurabh Gandhi

On Wed, Jan 12, 2011 at 9:22 AM, apoorva ashok <apoo...@gmail.com> wrote:

Ok... I looked up the cc 2500. Would it be possible for a microcontroller which has 4 different switches connected at its i/o to transmit a different message for the state of each of the 4 switches using a cc2500??

[apoorva ashok]

Thanks!!!!!