• AVR Freaks

Hot!Wireless Communication

Author
Russell Allsop
New Member
  • Total Posts : 15
  • Reward points : 0
  • Joined: 2016/03/19 07:20:26
  • Location: 0
  • Status: offline
2019/09/03 23:17:53 (permalink)
0

Wireless Communication

I'm looking to set up a wireless link between two PIC's to detect a derailment on a hopper running on a incline rail of around 30 degrees. A unit will be installed on the hopper and another in a location at the top of the shaft. The maximum distance would be 800m I have looked at a few radio modules however they require complex external components for impedance matching etc, also looked at the ESP8266 WIFI module as another option it is not designed for this range.
Please can someone advise on the best technology to use and maybe suggest a module I can purchase.
Thanks
Russell Allsop 
#1

6 Replies Related Threads

    ric
    Super Member
    • Total Posts : 23819
    • Reward points : 0
    • Joined: 2003/11/07 12:41:26
    • Location: Australia, Melbourne
    • Status: online
    Re: Wireless Communication 2019/09/03 23:22:42 (permalink)

    I also post at: PicForum
    Links to useful PIC information: http://picforum.ric323.co...opic.php?f=59&t=15
    NEW USERS: Posting images, links and code - workaround for restrictions.
    To get a useful answer, always state which PIC you are using!
    #2
    du00000001
    Just Some Member
    • Total Posts : 3052
    • Reward points : 0
    • Joined: 2016/05/03 13:52:42
    • Location: Germany
    • Status: offline
    Re: Wireless Communication 2019/09/03 23:58:34 (permalink)
    0
    "shaft" as in "mine shaft"?
    If so: usual wireless technologies might not work too well in such an ambient.
    Maybe some optical communication could be brought to work...

    PEBKAC / EBKAC / POBCAK / PICNIC (eventually see en.wikipedia.org)
    #3
    Russell Allsop
    New Member
    • Total Posts : 15
    • Reward points : 0
    • Joined: 2016/03/19 07:20:26
    • Location: 0
    • Status: offline
    Re: Wireless Communication 2019/09/04 00:20:25 (permalink)
    0
    Thanks this is just what I was looking for and may consider using a DataModem with a RS232 interface instead of the radio module.
    Thanks again.
    #4
    mlp
    boots too small
    • Total Posts : 798
    • Reward points : 0
    • Joined: 2012/09/10 15:12:07
    • Location: previously Microchip XC8 team
    • Status: offline
    Re: Wireless Communication 2019/09/05 08:29:56 (permalink)
    +1 (1)
    du00000001
    "shaft" as in "mine shaft"?
    If so: usual wireless technologies might not work too well in such an ambient.
    Maybe some optical communication could be brought to work...

    If it's straight enough to use free-space optical, then directional antennas on radio transceivers will also work.

    Mark (this opinion available for hire)
    #5
    Jim Nickerson
    User 452
    • Total Posts : 6257
    • Reward points : 0
    • Joined: 2003/11/07 12:35:10
    • Location: San Diego, CA
    • Status: offline
    Re: Wireless Communication 2019/09/05 09:50:47 (permalink)
    0
    This has been around for a while https://en.wikipedia.org/wiki/Track_circuit
    #6
    du00000001
    Just Some Member
    • Total Posts : 3052
    • Reward points : 0
    • Joined: 2016/05/03 13:52:42
    • Location: Germany
    • Status: offline
    Re: Wireless Communication 2019/09/05 13:33:27 (permalink)
    0
    @ mlp
    Getting small beams is easier with optical communication where you can get beam angles of 3° and below. (Think e.g. of laser diodes with a bit of additional optics.)
    You will hardly achieve this with directional antennas even of moderate size and cost - even for GHz frequencies.

    PEBKAC / EBKAC / POBCAK / PICNIC (eventually see en.wikipedia.org)
    #7
    Jump to:
    © 2019 APG vNext Commercial Version 4.5