Heat seeking and Night vision specs or Hologram Projector

[Rasanja]

I asked the person whose going to design the circuit about this , And I've forwarded some of the posts to him , he sent me this

"working wth tht cmos camera is more difficult thn it seems. refer the link below, most microcontrollers are unable to interface with such big data." and he'd Included a link from another forum (i didnt include that link or specify the name of the page because im not thorough with the rules and terms of use in robot.lk ) basically what they say is that most of the micro controllers cant process so much data , since i dont know to how explain my self the problem , I'l quote a part .

As I see it your basic problem is finding a device with enough memory to hold a single image. Do you know how to calculate that number? NO -- well here's an example. A standard VGA image with 640 x 480 pixels times 8 bits for each pixel is -- ta da -- 307,200 bytes. That number eliminates most of the microcontrollers that I know about.

(this person is asking about the i2C cam ...

from this and from what my adviser says, this 12C cam can't be easily applied :/ ..
http://www.ebay.com/itm/3-5-New-TFT-LCD ... 7145wt_952


this is a normal rear cam+display ,im not very sure about the cam's video feed achieving distance...Im going to need a cam that'd clearly detect objects within a 10m parameter ,and this display is very thick it seems , so it might be problematic when fixing that to the helmet shield, because! to what I've tried and experimented there should be at least 10cm distance from the naked eye to view a Display's video feed clearly without blurry vision , plus the 3" display is 222g ,


and finally if i choose these cams & displays , can you estimate how long the battery will hold in these different scenarios
a) 3-5inch LCD display + i2C cam + the IR illuminator that I've given earlier
b) this rear car cam set+ IR illuminator
c) what ever other cam that you suggest + 3-5inch LCD + IR illuminator ?????????

hi,
This is soo possible using a normal web cam.I'm telling this because one of
my friend built that.

web cams are come with a IR filter. Where you can easily do that conversion but
not easy in some cams, because in some chips the filter is placed inside the CCD
chip or more closer to it.

I'll already mailed my friend , hopefully I'm waiting for a answer now.

Sandun,

Rasanja is going to build something for an exhibition. He needs to fix a cam with IR illumination and get the output to a little LCD fixed on the helmet. Everything is battery powered so a person can wear it. Rasanja is almost in to the final steps of planning his project and he needs to discuss with his electronic designer on the microcontroller they are going to use, etc....

Since it seems you haven't read the topic form the beginning, it is recommended for anyone who thinks to jump in to read from the beginning. Otherwise it can be disturbing for all the participants. It is not required to answer all the posts. Please answer only if you know (no need to ask from friends and submit here since we have professionally qualified members in every engineering discipline we discuss here.. just ask your friends to join with us).

We need to keep ROBOT.LK with highest possible quality.

I hope you'll understand

yeah sadun , as he said we've discussed about that implication earlier ..... for this project however that wont be enough since im trying to light down the weight as much as i can

[Neo]

I asked the person whose going to design the circuit about this , And I've forwarded some of the posts to him , he sent me

"working wth tht cmos camera is more difficult thn it seems. refer the link below, most microcontrollers are unable to interface with such big data." and he'd Included a link from another forum (i didnt include that link or specify the name of the page because im not thorough with the rules and terms of use in robot.lk ) basically what they say is that most of the micro controllers cant process so much data , since i dont know to how explain my self the problem , I'l quote a part .

As I see it your basic problem is finding a device with enough memory to hold a single image. Do you know how to calculate that number? NO -- well here's an example. A standard VGA image with 640 x 480 pixels times 8 bits for each pixel is -- ta da -- 307,200 bytes. That number eliminates most of the microcontrollers that I know about.

Calculation is a bit wrong. Should be 640x480x3 for RGB or a bit less for YUV. However, we don't store them. We just write directly to LCD at the same time we read from I2C. Ask him to have a look at Atmel ATMega32 microcontroller. We have written to a 320x240xRGB LCD some time back with that micro. Hardware side is a pretty simple direct integration. The most important is to write an optimised code to copy by controlling the fps (10 fps or less might be enough.. 25 (as in PAL) would be a bit difficult and we will have to go for more powerful processors such as DSPs). If your display is 7"+, consdier moving to ARM processors. ARM processors are very powerful and those can handle high bandwidth of data. You find ARM processors on ePads that runs Android.

(this person is asking about the i2C cam ...

and from this and from what my adviser says this 12C cam can't be easily applied :/ ..
http://www.ebay.com/itm/3-5-New-TFT-LCD ... 7145wt_952

this is a normal rear cam+display ,im not very sure about the cam's video feed achieving distance...Im going to need a acm that't clearly detect objects within 10m radios ,and this display i very thick it seems , so it might be problematic when fixing that to the helmet shield, because to what I've tried and experimented there should be at least 10cm distance from the naked eye to view a Display's video feed clearly without blurry vision , plus the 3" display is 222g ,

I'm sure the unit has a powerful processor to write to a such large LCD. If you can fix it to your helmet, i'm sure this is going to be a good affordable solution.

and finally if i choose these cams & displays , can you estimate how long the battery will hold in these different scenarios
a) 3-5inch LCD display + i2C cam + the IR illuminator that I've given earlier

You totally forget the microprocessor always . Okay, I'll consider + microprocessor/controller.
6-7 hours I guess with a 6500 mAHrs battery if you run continuously. But if you implement automatic power saving or manually off the unit after use, you might be able to run for more than 10 hours.

b) this rear car cam set+ IR illuminator

According to the figures the main unit takes about 250 mA. With Camera + IR illuminator I guess it would run for 8 - 9 hours if you run continuously.

c) what ever other cam that you suggest + 3-5inch LCD + IR illuminator ?????????

If you can find the power requirement on the LCD you are going to buy, we can do a precise calculation on the battery life.

In addition to all your questions, ask your friend to use SMPS regulators otherwise battery life will be reduced unnecessarily due to power dissipation. You can ask your friend to have a look at A SMPS 5V regulator wanted topic which I discussed the subject with my best Support Team member

[Neo]

Rasanja, accidentally I came across these sites. Have a look to see whether there is any importance for you.

iWear AV230 - Seems a bit old product.

iWear VR920
iWear CamAR

Wrap™ Video Eyewear - Model Comparison Chart

Looks like an out of the box product.

Another list of similar products - HMD/headset/VR-helmet Comparison Chart

[Rasanja]

ah ok , I'll have a look