ATE 02 - 1 / 31
Lezione 3
i sistemi automatici di misurazione
-gli ATE
ATE 02 - 2 / 31
nella parte 1 ...
I sistemi modulari su bus standard
• IEEE Std 488 - GPIB - HPIB(1975)
• IEEE Std 1155 - VXI(1988)
• PXI(1997)
• LXI(2004)
ATE 02 - 3 / 31
nella parte 1 ...
I sistemi automatici di misurazione
• ATE e “in-circuit test” ( ICT )
• Struttura dell’ATE
• Switch matrix
• Fixture e “letto di aghi”
• Guarding
ATE 02 - 4 / 31
nella parte 2 ...
Lo standard IEEE 488
• Livello fisico
• Handshake
• Addressing, Command e
Data Mode
• Device Dependent Command
• Software
ATE 02 - 5 / 31
parte 3
SW per ATE
ATE 02 - 6 / 31
Programmazione del controller
• Linguaggi dedicati (‘80)
• Linguaggi grafici– NI LabVIEW – HP VEE
• Librerie per linguaggi di
programmazione ad oggetti– NI Measurement Studio for Visual Basic,
Visual C#, Visual C++, .NET
• Ambienti di sviluppo e generazione per
linguaggi di programmazione imperativi– NI LabWindows/CVI for ANSI C
ATE 02 - 7 / 31
LabVIEW: Lab Virtual Instruments Electronic Workbench
ATE 02 - 8 / 31
Programmazione in G
Esempio 01.vi
ATE 02 - 9 / 31
LabVIEW: Lab Virtual Instruments Electronic Workbench
2000 LabVIEW per Linux
1995 LabVIEW
1994-10 LabVIEW 3 per HP-UX
1993-7 LabVIEW 3 (Mac, Windows, Solaris)
1990-10 LabVIEW 2 per Sun Solaris
1990-9 LabVIEW 2 per MS Windows
1990-4 Registrazione brevetto LabVIEW
1990-1 LabVIEW 2 per Macintosh
1986-4 Lancio sul mercato di LabVIEW 1 per Macintosh
1983 Inizio sviluppo sw grafico per velocizzare l’allestimento, il test e la modifica di “banchi con strumenti elettronici virtuali”
ATE 02 - 10 / 31
… ed il bombardiere B1-B
il Consorzio VXIbus ...
ATE 02 - 11 / 31
Linguaggi grafici
ATE 02 - 12 / 31
Linguaggi grafici
IEEE 488HP- IB
IEEE 1155VXI
ATE 02 - 13 / 31
Linguaggi grafici o no?
ATE 02 - 14 / 31
Programmazione del controller
• Linguaggi dedicati (‘80)
• Linguaggi grafici– NI LabVIEW – HP VEE
• Librerie per linguaggi di
programmazione ad oggetti– NI Measurement Studio for Visual Basic,
Visual C#, Visual C++, .NET
• Ambienti di sviluppo e generazione per
linguaggi di programmazione imperativi– NI LabWindows/CVI for ANSI C
ATE 02 - 15 / 31
NI Measurement Studio for Visual Basic,Visual C#, Visual C++, .NET
ATE 02 - 16 / 31
MS Visual Basic
ATE 02 - 17 / 31
MS Visual Basic
ATE 02 - 18 / 31
MS VB TestBox
ATE 02 - 19 / 31
MS VB CommandButton
ATE 02 - 20 / 31
MS VB Code
ATE 02 - 21 / 31
NI Measurement Studio for VB
NI MS Knob
NI MS Graph
ATE 02 - 22 / 31
Interact with Data
ATE 02 - 23 / 31
Linguaggi grafici o no?
ATE 02 - 24 / 31
Programmazione del controller
• Linguaggi dedicati (‘80)
• Linguaggi grafici– NI LabVIEW – HP VEE
• Librerie per linguaggi di
programmazione ad oggetti– NI Measurement Studio for Visual Basic,
Visual C#, Visual C++, .NET
• Ambienti di sviluppo e generazione per
linguaggi di programmazione imperativi– NI LabWindows/CVI for ANSI C
ATE 02 - 25 / 31
LabWindows/CVI 2009
ATE 02 - 26 / 31
NI LabWindows / CVI
ATE 02 - 27 / 31
What is LabWindows/CVI?
The proven LabWindows/CVI environment features code generation tools and prototyping utilities for fast and easy C code development.
It offers a unique, interactive ANSI C approach that delivers access to the full power of C with the ease of use of Visual Basic. Because LabWindows/CVI is a programming environment for developing measurement applications, it includes a large set of run-time libraries for instrument control, data acquisition, analysis, and user interface.
LabWindows/CVI also contains many features that make developing measurement applications much easier than developing in traditional C environments.
ATE 02 - 28 / 31
NI LabWindows/CVI
ATE 02 - 29 / 31
NI LabWindows/CVI
ATE 02 - 30 / 31
ATE 02 - 31 / 31
Is VXI dead?
VXI continues to get investment for applications that require the high-speed and high-density benefits this architecture delivers.
We’ve found VXI works well in aerospace-defense, automotive, high-speed digital, and telecom applications where tight inter-module linkages and high channel count are critical. But as noted above, this capability comes at a steep price premium.
For general-purpose instruments, and in small to medium size applications, most customers prefer to use rack & stack because they offer a manual user interface and display, they are lower cost for equivalent capability, and they offer the flexibility to use the same instrument on both the bench and in the rack.
Top Related