Thanks Alan.
I really still have a lot to learn. Its fun! Industrial products are the way
to go.
Today I'm going to turn over my #1 detector over to the dump owner. #5 false
signals should not be a problem since there are no #5 bottles. We shall see
how it goes in actual operation. If it works OK we will have our first product.
I will video the operation. I hope it is not a fiasco. Next going to try my
luck at #2 plastic detection. #2 is transparent at terahertz frequencies. I
already have the PIR (passive infrared) detector. I am going to try one of
those etched plate Edmond Scientific visible spectrum analyzers as a cheep
infrared polarizer.
heat source----> etched plate---> #2 plastic----->etched plate 90 deg ---> PIR
detector
We shall see what happens. Maybe I will learn more and advance by two steps.
So far the costs have been low and Its been a learning experience.
Sold 14 books in Feb. That produced revenue of $2 per day. My cat could live
on it.
Thank God I had a regular job for 32 years. This starting a business is
difficult.
Frank
-----Original Message-----
From: AlanG <a...@magicsound.us>
To: vortex-l <vortex-l@eskimo.com>
Sent: Fri, Feb 28, 2014 1:45 pm
Subject: Re: [Vo]:Plastic detector find
On 2/28/2014 6:09 AM, fznidar...@aol.com wrote:
Thank you Alan G.
How? I really want to do this.
I would start with a process-control camera module, maybe 320x240
pixels. You shouldn't need more resolution, and keeping the pixel count
small means you won't need a fancy image processing chip. Such
modules typically use the common I2C or similar serial control and data
interface, and some modules will have an on-board micro controller. If I
were doing this project, I'd write some firmware that would look at the
change in color information between adjacent pixels and the do some simple
statistical analysis on the result. The goal is to generate a single value
for each image that represents how many colors are contained in the image.
Then all you need is a threshold value above which the #5 plastic is
detected. Other thresholds based on luminance might be capable of sorting
out the other types so that a single detector could do the whole thing.
AlanG
