RFID Human Motion Detection System

[r10m12l87]

The MMS Based RFID Human Motion Detection System will incorporate the innovation of RFID tags to identify whether a person is authorized or unauthorized to enter a room with the aid of an infrared motion sensor, a camera phone, with a backbone of a PIC microcontroller. It is a compact, complete, self-contained surveillance system. An RFID tag will be carried by all authorized users, and as they enter the door, an RFID antenna and reader will assess whether they are carrying proper identification. As they exit, the device will acknowledge that the user is no longer in the secure area. This anti-intruder device looks like an ordinary alarm detector. But when it detects people moving around, it silently starts recording.  The device contains a motion detector which will detect movement in the room when the alarm system is on.  When motion has been detected, the device will transmit pictures via MMS to a designated user and higher authorities warning them accordingly. Request for pictures can also be done by just texting the device itself.

question: how will the camera distinguish this intruder among many other people with RFID tag moving inside the room? and how will it be possible to follow and capture his every movements?

[rdpzycho]

may abstract na kayo pero hindi niyo pa pala alam principle nung paano malalaman. kung gagamit kayo nung nabibiling PIR motion detectors, motion detected or no motion detected lang ang output nito.

using the RFID use a method called triangulation. hindi made-detect ang position (precise position kung anong camera ang gagamitin) kung isang antenna lang ang gamit.

after triangulating the position of the intruder, use algorithms (in the video) to follow the track of the person appearing on the triangulated position.

[r10m12l87]

un kasi ung unang plano, pero nirequire kami nung prof namin na imodify ung gagawin namin in such a way na halimbawa lima kau all of you except for one, is not authorized to access the room. Pano malalaman na un ung taong dapat kuhanan at sa kanya lang dapat mafocus ung camera, since ung iba naman is authorized. un po..

[rdpzycho]

triangulation talaga. kailangan pwede mag-tell ng distance from antenna to RFID.

kung hindi naman, yung video enabled na pag may pumasok. so kung walang RFID (or authorization) recorded yung physical characteristics nung tao. then algorithms na ulit to track that person.

BTW, kung gagamit ng triangulation baka kailanganin na Active RFID tags. and IIRC, nasa 1 meter ang error radius na mapo-point nung software (based on previous threads read from other forums).

[r10m12l87]

do you think implementing such method together with our original device would cost that much?considering that we are in groups of 3? thank you nga po pla dun sa idea. well just study it first.

[maldihtah13]

Don't bother about the cost you should think about how will you do it. The first thing you need to do is to identify the person that is not authorized, you do this by letting the person pass thru a pathway with RFID reader (same with the magnetic scanner). The unauthorized persons physical feature is stored and followed by the camera.

Actually the mms feature is challenge alone because me my self was asked several times how to do it, and my only answer to them is to find a good java or phyton programmer.

[zer0w1ng]

I think this project is very difficult and may not be attainable with a student's level of knowledge.

First long-range RFID (sense one passing thru doors) needs very high power reader.  One needs good RF knowledge in antenna optimization or a large and bulky transponder and you have to build your own RFID receiver for off-the-shelf readers are low power. 

One solution is to us an active RFID tag. It is a small transmitter with batteries and the reader will just be an ordinary reader.  But this solution needs also good RF know how and low-power MCU techniques.

On the MMS sending, one needs to have a video capture or still camera,  JPEG encoding algorithm knowledge, GPRS knowledge for MMS.  This needs also motion control with detection/selection DSP algorithm to focus the camera to the face.

I think the main problem with this "thesis" things is that teacher requires students projects that they themselves could not even do.  Projects should be practical and doable.

[r10m12l87]

But I think we can further limit our scope to make it simple. di pdin naman final ung proposal. We are still to consult the experts regarding this. And probably,depende s mging comment nila kung magagawa tlga to considering the time alloted for us. but anyway, thanks for the opinion.

[paranz]

I think the main problem with this "thesis" things is that teacher requires students projects that they themselves could not even do.  Projects should be practical and doable.

i cant agree more

[maldihtah13]

eto ang most common problem ng mga adviser. sna nman they should be considerate sa kakayanan ng mga student.

[r10m12l87]

Bakit po active RFID ang kelangang gmitin? Hndi naman po gnun kalaki yung range na gagamitin namin.

[zer0w1ng]

Bakit po active RFID ang kelangang gmitin? Hndi naman po gnun kalaki yung range na gagamitin namin.

Common tags only work within the few cms. from the reader.

Normal tags normally does not have power and needs power sent by the reader via RF.
Large tags can capture RF better and high-power readers can transmit longer but to an extent.
Entering a door, which is a meter or more wide, with the reader installed may not work all the time.
Unless a high power ones are used or with larger tags.

But with active tags. This is transmitting a small packet in every few seconds and can reach up to 10s of meters.
Using active tags is only a suggestion that is easier to do.  You could also use high power readers but is not commonly available.

[maldihtah13]

Bakit po active RFID ang kelangang gmitin? Hndi naman po gnun kalaki yung range na gagamitin namin.

There are long range rfid reader for passive tags but the maximum is around 1.5 to 2 mtr IIRC.

I also don't know how will the reader react if there are 2 or more reader within range.

[rdpzycho]

But I think we can further limit our scope to make it simple. di pdin naman final ung proposal. We are still to consult the experts regarding this. And probably,depende s mging comment nila kung magagawa tlga to considering the time alloted for us. but anyway, thanks for the opinion.

I'd consider sir zerowing as one of the top experts with a lot of know hows in this forum.

a quick scan on the net on most of the suggestions above should already give an idea of how difficult the proposal is.

RFID triangulation is also in one of NASA's white papers I read recently. they used phase shifting antennas to exactly locate where the user is. that is already a thesis.

you'll have to choose between simply tracing the intruder by using DSP algorithms (there are already a lot of previous works that you can use as reference) or doing the triangulation or a mixture of both.

yung face tracking is also a thesis alone.