What is available in the 8 by 8 type sensor category? - Page 1
Forum section: electronics / general

author: Merlysys
author_rank: Regular Contributor
timestamp: December 20, 2017, 05:38:19 pm
content: 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

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: December 20, 2017, 05:50:55 pm
content: 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.

author: Spirit532
author_rank: Frequent Contributor
timestamp: December 20, 2017, 05:51:41 pm
content: 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.

author: fcb
author_rank: Super Contributor
timestamp: December 20, 2017, 06:13:34 pm
content: 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.

author: JacobPilsen
author_rank: Regular Contributor
timestamp: December 22, 2017, 07:44:22 pm
content: 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).

author: elec2012
author_rank: Newbie
timestamp: December 20, 2018, 04:07:57 pm
content: Does anybody knows this here? :https://www.meridianinno.com/I think it's a startup

author: Fraser
author_rank: Super Contributor
timestamp: December 20, 2018, 04:31:30 pm
content: 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

author: Fraser
author_rank: Super Contributor
timestamp: December 20, 2018, 04:45:00 pm
content: 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.pdfFraser

author: Spirit532
author_rank: Frequent Contributor
timestamp: December 24, 2018, 09:25:58 pm
content: Quote from: elec2012 on December 20, 2018, 04:07:57 pmSeems like another cheap rebranding startup/company front.80x62 is a standard product resolution at Heimann for their thermopile arrays.

author: Vipitis
author_rank: Frequent Contributor
timestamp: December 24, 2018, 11:39:08 pm
content: That resolution is better then a Lepton. But it uses large pixels... They call it CMOS by chance, very suspect.

author: ArsenioDev
author_rank: Frequent Contributor
timestamp: January 11, 2019, 07:58:07 pm
content: Fraser, I'm all but certain that is using the ULIS 32*32 thermopile arrays like the ones I have

author: ir.ukrm
author_rank: Contributor
timestamp: August 09, 2019, 10:53:30 am
content: Very poor image quality