DCS Workshop

André Augustinus16 June 2003

General Purpose Monitor

16 June 2003DCS Workshop 2André Augustinus

General Purpose I/O

Many detectors will need(even if you don’t know it yet…)

I/O acquired from individual sensors or inputs through a “dumb” I/O device

These parameters are usually only used for monitoring• To display on a screen• To store in a database• To compare to an error limit and raise an alarm

16 June 2003DCS Workshop 3André Augustinus

Applications

Temperature reading anywhere on your detector (e.g. PT100)

Any type of analog input• Independent measurement of voltage on a device• Any sensor with an analog signal

Digital inputs or outputs• Monitor a status line of some equipment• Control a relay for remote switch on/off

16 June 2003DCS Workshop 4André Augustinus

General Purpose device

ELMB• Atlas development (but used by all LHC experiments)

General purpose I/O fieldbus (CAN) node• Up to 64 Analog inputs (0-5V, PT100 (4wire), resistor, …)• 8 – 16 Digital inputs• 8 – 16 Digital outputs

Radiation tolerant Low cost (€100 – 150)

16 June 2003DCS Workshop 5André Augustinus

General Purpose device

Can be used by individual detectors• E.g. test of TPC chamber temperature monitoring

Will be used by the central DCS for ‘environment’ monitoring

Will be used in each rack for monitoring

16 June 2003DCS Workshop 6André Augustinus

Full package ELMB Motherboard (or custom board) Adapters CAN cable + connectors Kvaser CAN card (PCI:~ €400) Power supply PC + Software

See Sorina’s presentation

ELMB OPCserver

PVSS IIOPC client

ELMBframework

CANbusKvaser PCI-CAN

16 June 2003DCS Workshop 7André Augustinus

Current status

ELMB in ALICE First ELMB application for a detector

• Sorina is working on the TPC chamber temperature monitoring

A few ELMB available now• A lab setup is foreseen (this month ?); to gain

experience and to be used as demonstration Final production is launched by ATLAS

• ALICE has reserved 175