Colgo99
Posts: 2
Joined: Wed Oct 09, 2019 10:42 pm

HELP!! Proximity Detection For College Project

Wed Oct 09, 2019 10:50 pm

Hi there! I'm looking for help with a college project

I am a noob when it comes to the raspberry pi and all this technical stuff, however, I'm eager and willing to improve my skills.

So for our project we've to design a proximity alarm system for use in construction, that also includes a camera to view what's nearby... so far I've managed to get the camera up and running with motioneyeOS, as a way to view for a digger operator to see what's happening and proceed with caution however I'm not really sure how . to incorporate the proximity detection system that's somewhat accurate and doesn't display false positives... would IR?Bluetooth?or Ultrasound work best??

any help will be and is greatly appreciated to those of you out there !!

aBUGSworstnightmare
Posts: 1491
Joined: Tue Jun 30, 2015 1:35 pm

Re: HELP!! Proximity Detection For College Project

Thu Oct 10, 2019 11:07 am

How close/far do you need to detect?
Hava a look at https://github.com/sharpsensoruser/shar ... sor-Module

False positives? What's your judgement criteria??

Colgo99
Posts: 2
Joined: Wed Oct 09, 2019 10:42 pm

Re: HELP!! Proximity Detection For College Project

Thu Oct 10, 2019 4:08 pm

aBUGSworstnightmare wrote:
Thu Oct 10, 2019 11:07 am
How close/far do you need to detect?
Hava a look at https://github.com/sharpsensoruser/shar ... sor-Module

False positives? What's your judgement criteria??
Hi there, I'll give it a look now!

So basically what we are trying to do is improve safety in construction sites by preventing accidents and near misses with heavy plant. Our plan to achieve this is to have a proximity sensor device that will only turn on if a device on a person is within range of a device on the plant. I'm not sure how feasible this is with a low budget, but any help at all is appreciated

Andyroo
Posts: 4465
Joined: Sat Jun 16, 2018 12:49 am
Location: Lincs U.K.

Re: HELP!! Proximity Detection For College Project

Thu Oct 10, 2019 4:13 pm

Couple of problems sprint to mind:

1) What happens if the plant backs into a wall?
2) What happens if the device the person is wearing has a flat battery or is left at home?

You may not be able to mitigate against these things but in the project write up you may get points for mentioning them :)

When is the project due by the way? Please do not say a couple of weeks :roll: :lol: :roll:
Need Pi spray - these things are breeding in my house...

aBUGSworstnightmare
Posts: 1491
Joined: Tue Jun 30, 2015 1:35 pm

Re: HELP!! Proximity Detection For College Project

Fri Oct 11, 2019 5:27 am

Well, better use something like this https://www.sick.com/de/de/optoelektron ... gJPx_D_BwE

Not on a budget but reliable and prooven.

scotty101
Posts: 3718
Joined: Fri Jun 08, 2012 6:03 pm

Re: HELP!! Proximity Detection For College Project

Fri Oct 11, 2019 8:01 am

If you go with a vision system, consider using a IR camera (like the Pi NoIR camera) and IR lamps.

Given that it is generally mandatory for people on a work site to wear high vis jackets, they will show up very well on an IR camera and would result in fewer false positives.
Electronic and Computer Engineer
Pi Interests: Home Automation, IOT, Python and Tkinter

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