Radar

Forum 2005-2010 (read only) Hardware Interfacing
1

I dont suppose anybody knows of radar or radar like sensors? and how to use them?

2

Radar? Like Parallax PING))) ?

3

Like Parallax PING)))

No, that's sonar.

You used to be able to buy X-band Doppler units for motion detection (Mullard, IIRC), but I haven't seen them in years.

http://cgi.ebay.com/TRANSCEIVER-X-BAND-10GHz-Radar-Doppler-Module-NEC-HAM_W0QQitemZ110382728694QQcmdZViewItemQQimsxZ20090428?IMSfp=TL090428131001r18853

http://cgi.ebay.com/DOOR-OPENER-DOPPLER-MODULE-24-GHZ-K-Band-Flat-Antennas_W0QQitemZ110385182262QQcmdZViewItemQQimsxZ20090504?IMSfp=TL090504121004r10806

What sort of range / application did you have in mind?

4

What i want to do is to detect things at about a meter, (any thing, people, soft furnishings, furnature, glass, hedges, fences etc.) Cant use infra-red as it would go through glass, cant use sonar as it would be asorbed by the soft furnishings?? so thought radar.

5

Could use a conbination of both infra red and ultra sonics I guess

6

Cant use infra-red as it would go through glass

Short wavelengtth IR goes through glass OK.
It is the longer wavelengths that PIRs work at that don't work too well.

7

Hi,

Re your comment on X-band motion detectors - you can get them from Active Robots: see "Object detection" section on the triple-W dot active-robots dot com site (sorry, unable to paste a URL 'cos this is my first post & the site won't let me!)

Rgds ~ B.

8

Okay, let's see if it lets me post a URL now ;-))

http://www.active-robots.com/products/parallax/parallax-object-detection.shtml

Rgds ~ B.