VMR-DIO-24CH-DCI project
Project Description
Background
The aim of this project is to distribute dry contact input signal states
across a wide geographical area, using an Ethernet-based White Rabbit
(WR) network.
Hardware with 12 input channels, will be used to acquire the input
signals, and then transmit these to
operators.
Main Requirements
- LEMO 2-pin connector for dry contact inputs (DCIs).
- RTM powered with 24DC, complying with industrial environments standards.
- Minimal length transmission lines from DCIs.
- Networking nodes will collect and transmit DCIs.
- Updated input status required periodically, at least every 1.2s.
- Diagnostic tools to detect faulty inputs.
Proposed system
A block diagram of the proposed system is shown above.
- 12 input channels.
- Rear transition module or RTM, (See hardware project).
- RTM connected to the SVEC board via VMC P2 port.
- RTM i/p panel includes visual (LED) diagnosis
- Robust fail safe operation.
- Connect to White Rabbit via SVEC SFP port.
- Gateware for RTM to SVEC, SVEC to WR (Tx) and WR to SVEC (Rx).
Project Information
This project is divided into three separate projects:
Project documentation can be found at these locations:
- Current projected timeline can be found here.
- CERN-specific information
- Frequently Asked Questions
Status
Date | Event |
2011 | Initial discussions about replacing the external conditions system |
01-10-2015 | Start working on project. |
05-11-2015 | OHWR project page created. |
Denia Bouhired-Ferrag - Erik van der Bij - 12 Novembre 2015