Radio Frequency IDentification
0
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0answers
17 views
SmartCard, MagneticCard and RFIDCard Reader in a sngle module with RS232 interface
I difficult to find a SmartCard, MagneticCard and RFIDCard Reader in a single module and use RS232 interface. Most in the market is to use a USB interface, while I need RS232 interface. I want ...
0
votes
1answer
65 views
Alternatives to an RFID reader [closed]
For my Engineering project this semester, I proposed a luggage tagging system using integrated RFID. I know you're all thinking yes this has been done, but for my final presentation I'm looking for a ...
-2
votes
0answers
37 views
Detection of semi-passive tags at long distance
I am working on a project that may use an RFID tag. I would like to detect a small object from a long distance (maybe 15-20 meters). I used to think that an RF passive tag may be good but I've heard ...
-3
votes
0answers
34 views
aleis nlis cattle eid reader board [closed]
I would like to make my own reader aerial to suit a aleis reader for reading eid tags on cattle as the one aleis makes doesn't get a good read and was wondering the best way to do this
0
votes
1answer
107 views
Howto use/shield NFC/RFID Sticker on back of iPhone 5? [closed]
I want to stick a RFID sticker on the back of an iPhone 5 (between a case and the iPhones back to be precise). The sticker is an Mifare DESFire EV1 sticker, in case that matters.
Problem is, the tag ...
1
vote
1answer
208 views
How to design an Oscillator Circuit (500 MHz range) with no Op amps?
I am trying to design an Oscillator circuit which can produce a good sine wave with a frequency of at least 500 Mhz. This is for RFID applications. I have tried to use an class E oscillator, but i ...
0
votes
0answers
147 views
UART connection b/w Arduino Uno and UHF RFID reader
Working on integrating this RFID reader with an Arduino UNO using standard RS232.
Using the Rx, Tx, Power (+12V) and GND wires from the Reader and creating a soft serial connection.
Here is sample ...
2
votes
3answers
81 views
Wireless communications for distance estimation (RFID perhaps?)
What I want to do it is measure the distance between two points/ devices which are constantly moving apart or together. The value for distance isn't really required I'd just be looking to have an ...
1
vote
1answer
207 views
Arduino with Parallax RFID reader storing variables in char
I am quite new to electronics and have been tinkering around with this Arduino UNO w/ WiFi Shield and the Parallax RFID R/W Module.
Link to the RFID Module: ...
1
vote
2answers
223 views
Connecting RFID reader with RS232 interface to an arduino
I am attempting to detect 134.2kHz RFID tags using a chip from Priority 1 Design, specifically this one
I am attempting to connect this to an arduino Uno, but I am not really sure where to start. ...
0
votes
0answers
201 views
How to communicate between RFID reader and Arduino
I am starting with a RFID Arduino project and I am stuck at the beginning. My aim is to communicate between RFID reader and Arduino.
Components : Arduino Mega 3.3 and RFID Tagsense ZR-100 ( ...
2
votes
1answer
39 views
Manufacturer codes for E0 RFID tags
I have an RFID tag and I would like to know the manufacturer. According to RFID journal, the E0 format uses an 8-bit manufacturer ID. I've got this code. Is there some table where I can look up the ...
-1
votes
4answers
173 views
Following a Person In Real Time Using RFID
I am carrying out a project in which a trolley or carrier follows a person and follows him continuously wherever he moves inside a shopping complex or at airport.
I am confused whether to use RFID or ...
2
votes
1answer
145 views
Why can a UHF RFID antenna read a LF tag?
How can a RFID UHF (Ultra High Frequency) antenna read a LF (Low Frequency) tag?
I have a antenna designed for UHF made in China, but it can read every tag I have tried (UHF, LF, HF), I don't know ...
3
votes
1answer
137 views
RFID coil - ends broke, can I resolder?
The 125kHz RFID scanner / reader device I have, has a coil like this:
NB> Don't have a good camera handy at the moment, so had to share a cropped image from Alibaba, but the pic is very close to ...
0
votes
1answer
96 views
LF RFID chip with protocol select
Is there any RFID reader IC wherein I can select what protocols I want to read in a band ? Any kind of help would be useful.
-1
votes
1answer
181 views
RFID Emulator Software
I do not know if it exists but what I want to achieve is relatively easy:
I want a software for RFID emulation just to analyse the execution time of the program that I wrote. The emulator does not ...
1
vote
3answers
117 views
Trying to understand range and frequency of an RFID reader
I am trying to understand how range of communication between RFID reader and tag is related to frequency and power.
1- So if I increase frequency, the range will be shorter or larger? why? (I need ...
1
vote
1answer
355 views
How to measure distance from moving object using RFID?
I want to make a project on an anti-collision system using RFID. I'm facing many problems selecting RF reader and tag: the required UHF generator, tags and reader are expensive.
Any suggestions on ...
1
vote
2answers
182 views
If I have drawn an IC. Are there any manufucters that you can go too tom implement it? [duplicate]
Possible Duplicate:
How much does it cost to have a custom ASIC made?
I have drawn a IC for an RFID application. And I want the IC to be super small. I wonder if there are manufacturers I ...
-4
votes
1answer
109 views
Sensory Chess Board [duplicate]
Possible Duplicate:
Detecting object placement on a grid
How could a checkered chess board be built so that it knows the location of the pieces? What options are available? Probably RFID ...
1
vote
4answers
370 views
Why most does RFiD tags use hexadecimal number?
RFiD tags store one 24-digit hexadecimal number, why 24-digit hexadecimal number?
Thanks!
0
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0answers
56 views
Jitter in Pulse Interval Encoding (PIE) [closed]
How can one analyze the jitter performance of an encoding scheme, say PIE?
1
vote
2answers
103 views
What technique/sensor can I use to recognized tagged objects thrown onto a surface? [closed]
I am trying to implement a concept for somebody else.
Basically, I want to create a smart surface. I want to create a surface I can throw one or more tagged objects on that should all be recognized. ...
2
votes
1answer
2k views
Read RFID tag with NFC reader?
Can I read passive RFID tag (125/134 kHz) with a NFC tag reader, like the one on Samsung Galaxy S3 ? If not, why: maybe because of the different frequency of the NFC reader (13,56 MHz)? Any way to to ...
1
vote
2answers
244 views
Is that a capacitor and how does it work?
I'm trying to understand how my (rfid?) travel card works. It looks like this:
I'd like to know if the two portions of wire shown at the end of the arrows are capacitors and, if it is the case, how ...
2
votes
1answer
172 views
The reading distance limit on passive RFID
It appears that nearly all "passive RFID" tag-reader combinations have around a 5-10cm specification for reading distance.
But I am interested in approx. 20 cm reading distance.
I am assuming one of ...
6
votes
2answers
157 views
Tracking wandering vulnerable adults
I work in the field of telecare and advances are helping us keep the elderly and vulnerable out of residential homes/hospitals and allowing to retain their dignity and independence by staying in their ...
6
votes
1answer
207 views
Faraday Cage - Detecting one
I am looking for a cheap and easy way of creating a small electronic device that is capable of detecting whether or not it is inside a Farraday Cage.
Hopefully, without an external sensor/emittor.
2
votes
1answer
185 views
Antenna coil resonant for 134.2KHz
What would be the best N turns, when building a simple layer antenna coil to be resonant to 134.2kHz?
Based on this specifications:
1mm insulated copper wire.
4.5cm diameter.
Minimum length (based on ...
5
votes
1answer
363 views
How do I determine what kind of proximity sensor / RFID hardware is in a device?
I have several objects in my pockets that do stuff when I put them near things:
A token to disable a house alarm
A Transport for London Oyster Card
A security pass
And in the ...
2
votes
2answers
691 views
trying to find or make a very light/small chip (rfid, bluetooth, etc) that can send its location to a cell phone if lost
I was wondering which technology would be better suited to the goal I am trying to achieve. What I would like to do is embed a chip in an object and by using a cell phone, prompt the chip to send me ...
-1
votes
1answer
222 views
Combine a small pet chip reader and digital weighing scales using arduino [closed]
Firstly I would like to apoligise for my complete naivity.
I have absolutly no idea about electrical engineering, but I would like to create a product for a school project that combines a universal ...
0
votes
3answers
104 views
What is “RFIS” tag
I read somewhere about "RFIS" tag. I know what is "RFID" but does something called "RFIS" exist? I tried to search but all suggestions are RFID related. Would be nice if you have any clue share it ...
1
vote
3answers
500 views
Estimating costs for producing and implementing RFID systems
What type of RFID could I attempt to emulate myself easily for projects in a classroom. There are many technologies that are available and I am having a hard time selecting an RFID system that would ...
3
votes
3answers
849 views
sending signal to open car with microcontroller
I am interested in a way of how to open the caar's doors with a microcontroller device's extension hardware (I have an Arduino Uno Rev 3).
I know that the key can do it as well but I want to program ...
5
votes
1answer
477 views
Long range RFID detection
I have a question about detecting RFID tags at long range. I understand there are LF,HF,and UHF RFID frequencies.
I'm looking to detect a tag from a minimum distance of 2 meters (actually, 5 meters ...
0
votes
0answers
108 views
RFID tagging for small inventory room [closed]
I have an 8x8x8 room in which I store inventoried items for which I need to keep better track. I'd like to use an RFID-based system, but my budget is rather low. 125 mHZ RFID readers/tags are the ...
0
votes
5answers
200 views
Ideas for tracking individuals in a building
I apologize if this question is inappropriate for this forum, but I'm coming up short in my research.
The problem is as follows: I would like to find a network of devices capable of tracking people ...
11
votes
3answers
508 views
What's the purpose of such weird wiring inside this smart card?
Here's a scan of a stripped MIFARE Ultralight smart card
That's some plastic film with (I assume aluminum) foil wiring acting as the antenna for both powering the chip and providing radio ...
2
votes
1answer
96 views
Options for object tracking
Say a company has a parking garage for its employees, and they want to track the traffic in and out. So they require that all employees put some kind of tag in their car window, and they have some ...
5
votes
5answers
2k views
Options for short range distance determination between two objects
I have a project idea in mind, but it involves calculating the distance between two people. I've looked into Bluetooth, RFID, and NFC (unsure about this one), but none appear to offer the accuracy I ...
-1
votes
3answers
286 views
Use household 12 V DC adapter with RFID transponder?
Is it possible to use a common household 12 volt DC output adapter with this RFID transponder. I am a newbie but I am willing to learn. Here is a diagram of this RFID transponder system of this.
...
2
votes
1answer
347 views
How to determine if an RFID system supports reading multiple tags at once?
In this answer the following is stated:
Most RFID protocols include singulation so that if you put dozens of
RFID tags in front of it, and then turn on the RFID reader, it can
read the correct ...
1
vote
1answer
458 views
How can I use audio signal to actuate relay (or close dry contact)?
I have a time clock (prox reader) that has no contact or voltage output - other than a speaker chime. I need to actuate a turnstile on valid time clock swipe (RFID card). I'd hoped I could steal the ...
2
votes
2answers
261 views
Does RFID interfere with NFC
i have a small question about interference. Do active RFID (860 MHz) interfere with NFC cards (13.56 Mhz) when placed on top of eachother? (NFC above RFID tag for example). Thanks!
1
vote
1answer
436 views
Display RFID tag data on an LCD display
I am complete electronics newbie, so please bear with me :)
I would like to connect an LCD directly to a 433 MHz RFID tag. So whenever I swipe the RFID tag near the RFID writer, the values that are ...
0
votes
0answers
217 views
ioProx ID card continually getting fried
My work uses ioProx proximity ID badges to get into the building, whose specs can be found here. We use the P10SHL.
My card is continually getting fried. I have gone through about 8 cards in a three ...
2
votes
1answer
250 views
How does Sifteo and Scrabble Flash tiles handle proximity and ID?
Sifteo and Scrabble Flash
These tiles will sense and ID tiles that are adjacent to each other.
On the Sifteo site it mentions proprietary near field sensing technology. How does it work? Does each ...
-1
votes
1answer
74 views
actual status and future of RFID [closed]
I am looking for some expertise on the area of RFID. What is the actual status of RFID and what will be the future?
The point is that i have seen a lot of videos, comments, articles and papers about ...
