Author Topic: What is available in the 8 by 8 type sensor category?  (Read 3938 times)

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Offline MerlysysTopic starter

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What is available in the 8 by 8 type sensor category?
« on: December 20, 2017, 05:38:19 pm »
Application is energy regulation, for detecting persons approaching areas so lights can be turned on.
Other types of security sensors won't work due to various reasons.

One I know is this Panasonic unit for about $20 in quantities of 25, but are there cheaper alternatives?
https://learn.adafruit.com/adafruit-amg8833-8x8-thermal-camera-sensor/overview

 

Offline mikeselectricstuff

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Re: What is available in the 8 by 8 type sensor category?
« Reply #1 on: December 20, 2017, 05:50:55 pm »
8x8 for $20 is cheap. 
ALPS also had some lower-res ones ( 8x1 and 4x4 from memory), and Melexis also have their thermal array detectors.

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Offline Spirit532

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Re: What is available in the 8 by 8 type sensor category?
« Reply #2 on: December 20, 2017, 05:51:41 pm »
There's the Panasonic Grid-Eye, the Melexis MLX90621, and the Omron D6T.
I believe Heimann Sensor also makes an 8x8 digital array(HTPA8x8d), but I only have experience in using the 32x32 one(~$60ish) and haven't seen any quotes for the price or availability of the 8x8 variant.

None of them will be particularly cheap.
 
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Offline fcb

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Re: What is available in the 8 by 8 type sensor category?
« Reply #3 on: December 20, 2017, 06:13:34 pm »
GridEye was designed for this market - so they won't have priced it outside what the market can afford for this type of device.  So it's going to boil down to your volume.

If you really need to go low on cost, then you'll have to spin your own - it's perfectly possible to detect direction of people using a low cost two element PIR sensor.  Radar is another option if you need an oblique angle.
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Offline JacobPilsen

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Re: What is available in the 8 by 8 type sensor category?
« Reply #4 on: December 22, 2017, 07:44:22 pm »
BTW: AMG8833 IS Grid-Eye.
I don't have any idea, what was Grid-Eye designed for.
I personally never seen it in any appliance (nor microwave, nor automatic doors).
 

Offline elec2012

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Re: What is available in the 8 by 8 type sensor category?
« Reply #5 on: December 20, 2018, 04:07:57 pm »
Does anybody knows this here? :

https://www.meridianinno.com/


I think it's a startup
 

Online Fraser

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Re: What is available in the 8 by 8 type sensor category?
« Reply #6 on: December 20, 2018, 04:31:30 pm »
The meridianinno X-Cam is all over eBay at a low price.

I suspect they must be using a Thermopile based technology but I have no information on the sensors beyond the companies very loose description. Note they do not state that the sensor array is VOx or A-Si but do state that no FFC flag is needed. Pixel size is pretty big by today's standards.

$102 for the HT102 (appears to be the X-Cam) here....

https://www.ebay.com/itm/HT-102-Black-USB-Type-C-Infrared-Camera-Thermal-Imager-640x480-for-Android-Phone/312377703530?epid=11027066866&hash=item48bb297c6a:g:

At that retail price it is using a very cheaply manufactured thermal sensor technology.

Fraser
« Last Edit: December 20, 2018, 04:41:41 pm by Fraser »
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Online Fraser

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Re: What is available in the 8 by 8 type sensor category?
« Reply #7 on: December 20, 2018, 04:45:00 pm »
Thermopile sensor array technology appears to fit the inexpensive end of the thermal sensor FPA market. I personally like the Panasonic Grid Eye and Melexsis series of matrix sensors. There is a good probability that such sensors will be available long term, unlike those from a small start-up company. This is important if intending to manufacture and then support a product for 10 years.

https://na.industrial.panasonic.com/sites/default/pidsa/files/thermopile-arrays-grid-eye-white-paper-final.pdf

Fraser
« Last Edit: December 20, 2018, 04:50:11 pm by Fraser »
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Offline Spirit532

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Re: What is available in the 8 by 8 type sensor category?
« Reply #8 on: December 24, 2018, 09:25:58 pm »
Does anybody knows this here? :

https://www.meridianinno.com/


I think it's a startup

Seems like another cheap rebranding startup/company front.
80x62 is a standard product resolution at Heimann for their thermopile arrays.
 
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Offline Vipitis

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Re: What is available in the 8 by 8 type sensor category?
« Reply #9 on: December 24, 2018, 11:39:08 pm »
That resolution is better then a Lepton. But it uses large pixels... They call it CMOS by chance, very suspect.
 

Offline ArsenioDev

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Re: What is available in the 8 by 8 type sensor category?
« Reply #10 on: January 11, 2019, 07:58:07 pm »
Fraser, I'm all but certain that is using the ULIS 32*32 thermopile arrays like the ones I have
 

Offline ir.ukrm

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Re: What is available in the 8 by 8 type sensor category?
« Reply #11 on: August 09, 2019, 10:53:30 am »
Very poor image quality
 


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