Radar type Motion detection sensors

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Hi All

I need to add motion detection of about 1 meter in my application. My pcb has to be in enclosure with no holes or cut outs, there PIR sensor would not be viable. I have seen various radar sensors for motion detection online, but has anyone got any experience using such circuits.

I am look for a module type solution

Thanks

Thanks

Regards

DJ

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John Samperi

Ampertronics Pty. Ltd.

https://www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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I need to add motion detection of about 1 meter in my application.

Of what ?  a snake? horse?  box of cereal?, lava flow? or your own device? You need some details.

 

What enclosure?  Titantium?  glass?

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

Last Edited: Tue. Nov 17, 2020 - 12:21 AM
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I have a thread on HB100 radar sensors but considering their size you could fit a prox detector in the same space

Jim

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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I have a thread on HB100 radar sensors

Does the enclosure have to be a special type of plastic? 

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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avrcandies wrote:

I have a thread on HB100 radar sensors

Does the enclosure have to be a special type of plastic? 

Nope, but you will need to think about shielding behind it.  And its not a very small device, and it needs an external circuit to condition the modules output.

 

 

Google "hb100 microwave motion sensor"

 

They are $7.99 from amazon...wow price has dropped a lot lol.

 

Jim

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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jgmdesign wrote:

Google "hb100 microwave motion sensor"

 

Also heats soup.

 

Neil

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Does the enclosure have to be a special type of plastic? 

Nope, but you will need to think about shielding behind it.  And its not a very small device, and it needs an external circuit to condition the modules output.

Ah-- makes sense, since this is being used to detect motion.  Otherwise if it could detect (relect) a plastic box sitting 5 feet away, seems like being in a plastic box could be an issue.   No freq shift when things are sitting still (such as an enclosure), so that probably helps a great deal.  These seem like very interesting modules.

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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djoshi wrote:
My pcb has to be in enclosure with no holes or cut outs

What is the enclosure made of?

 

A radar isn't going to work inside a metal box - or other "RF opaque" material ...

 

If it is (or could be) IR transparent, could you use one of those time-of-flight (ToF) type of sensors ... ?

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awneil wrote:
A radar isn't going to work inside a metal box -
Like a car? ;-)

 

(actually they are mounted in things like the bumpers so are not "behind metal")

 

One might cut holes in the metal box then cover the aperture with some form of plastic to make "radar visible windows" but if you were going to do that you might as well use clear plastic and the PIR sensors originally mentioned !

EDIT: actually:

My pcb has to be in enclosure with no holes or cut outs

I guess there is nothing there that says what that enclosure is made of so perhaps it's all just speculation. If the enclosure is plastic then I guess radar will work but if it could be clear plastic then so would PIR. OTOH I suspect it's supposed to more of a "black box" (so maybe clear plastic but then sprayed with matt black paint apart from "corner windows" for PIR sensors ?

 

If radar is used does anyone have any idea of power consumption - gut feeling says it's going to be more than optical detectors because it's effectively a "torch" (except not in the visible).

Last Edited: Tue. Nov 17, 2020 - 10:43 AM
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The enclosure will be plastic.

 

Unfortunately it would not be be transparent. 

Thanks

Regards

DJ

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Why are you not able to describe what you want to do?  Are you waiting until post #30?

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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djoshi wrote:
it would not be be transparent. 

To visible light ?

 

To IR ?

 

To RF ?

 

Or what ??

 

and why not ?

 

and, as clawson suggested, why not have "transparent" (to whatever wavelength(s) we're talking about) windows in it ?

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Last Edited: Tue. Nov 17, 2020 - 11:46 AM
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Well i am working with a client, who needs to control a fan for a prototype.

 

But the electronics needs to placed into their plastic enclosure but the most important factor is enclosure can not be modified for anything like PIR sensor.

 

Therefore i was considering using Radar Sensor. They are looking for simple solution if it exits. 

Thanks

Regards

DJ

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djoshi wrote:
plastic enclosure

 could you add a sensor (PIR or whatever) externally with an RF link into the box ... ?

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That was original suggested , but that is going over complicate both installation and maintenance. 

Thanks

Regards

DJ

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You could have said that in the first place!

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  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
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Why do you continue to neglect what you are trying to detect?  A semi trailer coming down the highway? throwing a baseball?  A  cat walking across the driveway?

Ice falling off a roof (run!!)

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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Sorry, i am simply try to detect if someone is walking pass certain area in room. 

Thanks

Regards

DJ

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I'm not sure someone sitting on their couch would like to have a 10 GHz radar aimed at them all day...maybe it's fine, but I don't want to find out your uncle Albert had the gate drive set way too high the past 2 years.    

 

Who are you looking for?

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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avrcandies wrote:
but I don't want to find out your uncle Albert had the gate drive set way too high the past 2 years.    

 

The HB100 does not have any control over its output power so it's full on all teh time.  Maybe the documentation has gotten better since I played with one a few years go.

 

JIm

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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djoshi wrote:

Sorry, i am simply try to detect if someone is walking pass certain area in room. 

Whoopee cushion under a mat where the person may walk and a microphone inside your enclosure.

Ross McKenzie, Melbourne Australia

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no radar needed--you can connect one of these to your trap door

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!