Author Topic: "cheap" Thermal USB Cam for Motion Dedection?  (Read 1547 times)

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Offline Lord of nothing

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"cheap" Thermal USB Cam for Motion Dedection?
« on: June 14, 2022, 01:23:01 pm »
Hi
Some Company offer since a view years USB Thermal Cams for a reasonable Price. Still back then I thought why not use them for Motion detection?
Before someone start to argue why not use a "traditional" System its simple. A Camera can differ if someone is moving inside or outside an designated area.
For example there is a Door and there are Steps going up and down. So there is no need to illuminate both sides fully when someone going just one direction.
Sure with Multiple Motion Detection Sensor its maybe possible to replicate to but I would say a Camera its way easy to use.
Are there some Software who can do that on a Single Board Computer still today?
Thanks
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Offline frenky

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #1 on: June 14, 2022, 01:35:30 pm »
I've done quite some coding of live streams for Seek thermal cameras and IMHO it should be easy to write software that would call some other service (maybe send mqtt mesage) if there are movements in specific areas or someone moving in specific direction...
And you should be able to find cheap Seek modules on ebay really cheap because thermal images were crap. (But still good enough for detecting movements in areas)

ThermalExpert cameras also have available SDK so this is another (a bit more expensive, but better quality) option...
« Last Edit: June 14, 2022, 01:43:34 pm by frenky »
 
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Offline frenky

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #2 on: June 14, 2022, 01:44:57 pm »
Another cheap and easy option is this 32x24 IR sensor MLX90640:
https://www.adafruit.com/product/4469
 
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Offline Lord of nothing

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #3 on: June 14, 2022, 01:57:16 pm »
 :-+ nice!
Well another idea is to detect when a Handicap Person need some assistance for example when the fell down in the Bathroom, Toilet,... where a "normal" Camera is prohibited. Sure such Thermal Device should NOT be able to access from outside to be GDPR compliant.
How about my idea?  :-//
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Online mikeselectricstuff

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #4 on: June 14, 2022, 02:01:38 pm »
A Uk company, Irisys produced motion tracking cameras for people counting using their own 16x16 pyroelectric IR sensors for many years. They are now part of Fluke
https://www.irisys.net/products/gazelle2-people-counter
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Offline Lord of nothing

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #5 on: June 14, 2022, 03:03:57 pm »
Yes but for detecting when someone fall a slightly higher Resolution is better.  :-+
Maybe hacked something together?  :-+
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Offline lichenzc

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #6 on: June 14, 2022, 03:57:46 pm »
Hey, I bought this from a second-hand trading app in China.It's a QVGA thermal module with 13mm lens and type-c interface.The software from offical may meet your requirements.The price is just under $500.
« Last Edit: June 15, 2022, 04:15:50 am by lichenzc »
 
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Offline Lord of nothing

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #7 on: June 14, 2022, 04:11:58 pm »
 :=\ currently its just an idea. Maybe I am not the first person who got that idea.
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Online CatalinaWOW

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #8 on: June 14, 2022, 04:13:34 pm »
It may be easier to detect a fallen person in the IR, but it isn't obvious to me.  At any price point a much lower noise and higher pixel count image is available in the visible and NIR wavelengths.  Also, it has been my experience that people are at least as sensitive about infrared images from a privacy standpoint as they are about visible images.  You MAY be able to get around this issue at any wavelength if your signal processing never makes an image externally available, just simple messages such as occupied, occupant on floor, vacant and so on.  This would possibly also require that any communication between the sensor and signal processor be inaccessible or incomprehensible.
 

Offline ArsenioDev

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #9 on: June 14, 2022, 09:33:45 pm »
Hey, I bought this from a second-hand trading app in China.It's a QVGA thermal module with 13mm lens and type-c interface.The software from offical may meet your requirements.The price is just under $500.

Whoahhhh, how many of em you got? I'm interested
 

Offline lichenzc

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #10 on: June 15, 2022, 04:28:20 am »
Hey, I bought this from a second-hand trading app in China.It's a QVGA thermal module with 13mm lens and type-c interface.The software from offical may meet your requirements.The price is just under $500.

Whoahhhh, how many of em you got? I'm interested
I only have one´╝îit's sold in a second-hand trading app callde "xianyu" in China.I might be able to help if you need.
 

Offline Bill W

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #11 on: June 16, 2022, 11:21:00 pm »
There were a few addon programmes done for WinTV cards back in the Win98/WinXP days, motion detecting and timelapse on analogue video inputs, which of course can be any spectrum.

I have the downloads if anyone is interested and cannot find them, file dates are Dec 2000

Bill

Offline LaserSteve

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #12 on: June 22, 2022, 01:30:00 am »
Google "Phil Hobbs, Electrooptics, and Footprints. "
You may like the reading material.

Steve
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Offline Lord of nothing

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Re: "cheap" Thermal USB Cam for Motion Dedection?
« Reply #13 on: July 10, 2022, 02:57:30 pm »
I bought an "cheap" Thermal cam from Hikvision for demo Purpose.
The quality of the Thermal Cam is as expect very low but good (enough) to see if a big thermal mass aka Human is walk where the should not.
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