Experimental Physics and Industrial Control System
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I am contemplating a project which requires wireless communication. I would like to have telemetry information on a control station. The network link specification is: range 1 mile at 250Kbps Latency could definitely be an issue (measurement needed at this point) I could potentially have several 250Kpbs links (not sure whether they can be 'trunked' together)
The remote device could run an IOC (I need something like a 'fast' sequencer for sure) Between local OPI and remote IOC, I can use any communication protocol I want
Classic architecture: local OPI ---- (CA over wireless) --- remote IOC is there a way for an OPI to bypass the UDP discovery process and force connection to a specific IP addres/port?
Other possible architectures: * mirroring of IOC local OPI --- (CA)--- local IOC -----(CA over wireless?) ---- remote IOC How can you mirror an IOC, PV to PV ? (PV names need not be the same)
* 2 processes with duplicate queries local OPI ---(CA)--- local IOC ----(serial protocol over wireless) ---- controller to remote hardware The remote IOC is independent from above and need to query the hardware as well Maybe IPC could help reduce the number of 'real' queries?
* custom development (with Robot OS, aka ROS, or equivalent) local OPI ---(CA)-- local IOC --- (serial protocol over wireless)--- non IOC software, i.e ROS Make sense, but learning curve...
Any input?
-- Emmanuel
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- Replies:
- RE: Channel access over wireless? Dalesio, Leo
- Re: Channel access over wireless? Ralph Lange
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ANJ, 20 Apr 2015 |
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