Details of motion sensor connected to microcontroller

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feiutm9898

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motion sensor to mcu

I need details of motion sensor that connect to microcrontroller. Anyone have implement similar project?

Please share some information with me.
 

Re: motion sensor to mcu

Your question is to general ..
As motion detector you can use infrared sensor fited with fresnel lens ..
As distance sensor you can use ultrasound detectors ..
As position sensors (x, y, z) you can use accelerometers ..
All of the above (and more) can be used as motion sensors and signal from them amplified/buffered can be fed to a microcontroller ..
Give us more info what would you like to do ..
 

motion sensor to mcu

Give us the block diagram, flowchart or program flow description.
 

Re: motion sensor to mcu


Actually I am looking for motion vision sensor.

If no motion vision sensor at the market, probably I will to implement a camera capture JPEG image from image sensor and do comparation between the image to to have the motion detection.

Or anyone have reference for this type of motion detection camera?

Thanks a lot.
 

Re: motion sensor to mcu

there are lots of similar system in the market . main principle of system is check thr motion in the picture if motion is detected increase resolution of camera or begin to save picture seqences to storage device or etc.

i worked in a company that produces security systems for a short time , they have systems like i described above.
i dont know the brand or model but some cams have this properties implemented internaly
 

Re: motion sensor to mcu

bilgekaan said:
there are lots of similar system in the market . main principle of system is check thr motion in the picture if motion is detected increase resolution of camera or begin to save picture seqences to storage device or etc.
Click to expand...

You are right. I am looking these kind of project.

I am looking the information to help me implement this project. Can you point out some resources and reference links to me?

Thanks.
 

Re: motion sensor to mcu

Hi,

All you need to do is decide on where you want to check for motion, and then count the number of lines that you receive untill you will get to the corosponding line. Then check the voltage level in that area of the line/lines and sum them up. then each time you check again see if there was any change from the reading before. If the change was greater then pre-defined verible, then do...

There is another way to do it very simple, but i never got around to try it. If you are using any one of those camers that also puts out a compresed format, then you can check the size of the file. if the file size had changed then there was some motion in the picture.

If you need any information on how you receive the picture, let me know here and i will post some files that i have on video signal. also let me know if you need PAL or NTSC.


Good luck.
 

Re: motion sensor to mcu

Hi feiutm9898,

I am sorry i dont know any projects and docs about the systems like i describe. you can implement some image processing algortihms and detects motion in the image easily if you got image data.

some cams have digital output ( for instance c3088 ) , you can get image data easily. if you are going to use analog output camera , you have to resolve syncs ( horizontal and vertical ) and pick image data from anlog signal using analog digital converter. there are some standarts for video signals like PAL and NTSC as gidimiz told before.

difficult side of your project is geting image data form analog video signal. you can search internet for projects to seperate data form analog video signals at the first hand.
you need documents form gidimiz I think. to implement simple alorithms suggested by gidimiz you need to know format specs of PAL or NTSC . you must have info about active video, interlace or proggresivve scan ..etc..
 

Re: motion sensor to mcu

gidimiz said:
Hi,

If you need any information on how you receive the picture, let me know here and i will post some files that i have on video signal. also let me know if you need PAL or NTSC.
Click to expand...

Yes. Please show me all. I want to know how to design C++ or JAVA software to get the image for image processing. My Final goal is implement the image processing at microcontroller.

Thanks you.
 

Re: motion sensor to mcu

I found an article and project in one of circuitcellar back issue 168 .

Full-Field Color Video Frame Grabber. it is what you need. has frame buffer you can access image dat easily.

hope this project helps you
 

Re: motion sensor to mcu

Ok,

Here are some files that you can start with. I have in total about 85Mb of information on Video ( I designed for a company once a DVR... ). Any way, im uploading few files that will help you start with video signal. If the EDABoard will alow it, i will upload all the files some where here.

If you have any questions you can ask me, I hope to have the answers for you.

Good luck.
 

Re: motion sensor to mcu

IanP,

As position sensors (x, y, z) you can use accelerometers ..
Click to expand...
i know using only accelerometers sensors don't give us postion

any other opinion?
 

motion sensor to mcu

Hi anthrax,

Can you please specifay what you need and what you are looking for. The more information you will post, the better understanding will have to what you are looking for and what is the technical problems you have.
Thanks.
 

Re: motion sensor to mcu

sorry,
I searched for postion navigating.I found IMU (inertial measurement unit)
(3 accelerometer sensor+3 gyroscope sensors for 3 axis) can deal with my requires.But at last ,i found that stand-alone IMU will not accuracy after long-term period(about 10 seconds). IMU always combine with GPS or magnetometer or compass to correct its errors.
best regards.
H
 

motion sensor to mcu

Hi anthrax,

What you are looking for is almost impossible to build without a GPS. lets say you want to trak a car. then there are so many factors that you need to think about, here are few: wind speed, well tracation, type of gravel, whight and many other things. combaind all of them and a powerfull computer, and you will find your X, Y, Z with a small drift of few metters every few kilomaters. Do you realy want to do that without GPS?
Nasa is using GIRO, that cost so much, just becasue the need the acuracy when they are on orbet. But when they go back to earth, afcourse they are using the GPS system.
Sorry to blow your buble. If you have any idea to over comethat, please let me know even its a stuped one. ( brain storming ).
Good luck.
 

Re: motion sensor to mcu

Hi gidimiz,
Thanks for your suggestion about using GPS.But GPS cannot be used under water.
My project is building a ROV (remote operated vehicle) and it works under sea.
And IMU is a possible choice if it is combined with compass or magnetometer.
Now i give up building IMU because its complexity .
Have fun.
 

Re: motion sensor to mcu

thanks bilgekaan,this is great link.
 

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