EP-E Software library

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EP-E Software library



Table of content

1) EP-Lib Software library

2) Extended features

3) Customising

4) Source code availability

2



• National Instrument LabVIEW

• Object based by using theG# Framework (AddQ Consulting)



Classes contained by our basic library

- Compact minimum scope



Elements of our basic functionality

.1) Configuration files

.2) User/role management

.3) Languages

.4) Error handling

.5) Event logging



1.1 Configuration files

- File format: xml

- Readable /editable

- Checksum to detect changes

- Possibility of encryption if necessary



1.2 User/role management

- Role-based assignment of rights

- Any roles/users possible



1.3 Languages

- Translation of almost all interface elements

- Also non ASCII conform languages possible.



1.4 Error handling

- Centralized management of potential defects

- Collecting additional data for better traceability in case of errors



1.5 Event logging

- Consecutive log number and checksum to detect changes



2) Extended features

.1) Data acquisition

.2) Control algorithms

.3) Calculations

.4) Interfaces

.5) Hardware abstraction

.6) Test sequences

.7) Data storage





2.1 Data acquisiton

Standard DAQ

Data acquisition components:

▪ Multifunction cards (National Instruments)

▪ Modular bus couplers (Beckhoff Automation)

▪ Valve terminal (Festo)

Key performance data:

Sampling rates up to 10 kHz

Processing rates up to 100Hz

High-Performance DAQ

High-performance data acquisition

▪ Multifunction cards (National Instruments)

Key performance data:

Sampling rates up to 1 MHz

Processing rates up to 1 kHz



2.2 Control algorithms

▪ PID - Controller

▪ 2 point - controller

▪ 3 point controller

▪ Cascaded controllers

▪ Learnable control algorithms



2.3 Calculations

Flow calculationMeasurement / calculation of volume flow, mass flow and standard volume flow with differentmeasuring elements.

▪ Laminar Flow Element

▪ Gas meter

▪ Venturi nozzle

▪ Supercritical nozzle

▪ Beta Sensors

▪ Mass-Flow Meter

▪ Electromagnetic flow meter



2.4 Interfaces - Ethernet

▪ Ethernet TCP - text messages (e.g. ASCII)

▪ Ethernet TCP - raw data (byte oriented)

▪ Ethernet TCP - Modbus (server or client)

▪ DataSocket

▪ HTTP (web services)

▪ FTP (upload / download)

▪ SMTP (mail dispatch)

▪ NI Network Streams



2.4 Interfaces - Serial

▪ RS 232 - text messages (e.g. ASCII)

▪ RS 485 - Text messages (e.g. ASCII)

▪ RS 485 - Modbus (client)



2.4 Interfaces - Further

▪ Profibus

▪ CAN – Bus

▪ Profinet

▪ Foundation Fieldbus

▪ OPC

▪ OPC UA



2.5 Hardware abstraction

▪ Klimakammern (CTS, Kambic)

▪ Klimageräte (WTA, UniChiller)

▪ Linear Antriebe (Schneider Electric, LinMot, Festo)

▪ Softwareüberwachung mittels Watchdog



2.6 Test sequences

- Finite state machines for the implementation of processes

- Standardized tasks (measurement with averaging, leakage test, sensor zeroing, etc)

- Flexible sequences of test steps with own configuration (test steps)

- Complex system control with parallel sequences (e.g. temperature control and cyclic pressure changes)

- Parameters can be managed (configured/saved/loaded) as test plans

- Chaining of subsequences by means of configurable test steps



2.7 Data storage - CSV

▪ Simple text file formatted with adjustable delimiter

CSV text file (in text editor)

Masternummer;1;;;;;;;;

Adapter:;2;;;;;;;;

Prüfkabel:;3;;;;;;;;

Ersteller:;4;;;;;;;;

Datum der Masterdatei;2014-12-09_15-59-25;;;;;;;;

Signaltyp;Voltage;;;;;;;;

TestplanID;TP1;;;;;;;;

Datum des Testplans;22.09.2014 15:55:44;;;;;;;;

CSV text file (in Excel)



2.7 Data storage - XML

▪ For structured storage of data

XML text file (in text editor)

<?xml version="1.0" encoding="iso-8859-1" standalone="yes"?>

<data>

<product>

<measurement>

<type>BOOL</type>

<value>TRUE</value>

<name>Result</name>

<unit></unit>

<step_description>Hochspannungspruefung</step_description>

<step>1</step>

</measurement>

</product>

</data>

XML text file (in browser or XML editor)



2.7 Data storage - Excel

▪ To create printable protocols



2.7 Data storage – data base

▪ MS Access

▪ MS SQL

▪ Firebird

▪ MySQL



2.7 Data storage – LabVIEW TDMS

▪ For storing large amounts of data for subsequent processing (e.g. with DIAdem)



3 Customising

- Due to the object orientation, most functions of the basic library can be

easily adapted and/or extended for project-specific special functions.

- e.g. user authentication via LDAPz.B. Nutzerauthentifizierung mittels

LDAP

- Due to the dynamic structure, it is easily possible to add further classes

- for new DAQ devices (e.g. Beckhoff CX TwinCAT)

- Control of new hardware (e.g. Stäubli robots)

- Implementation of new interfaces (e.g. SENT)



4 Source code availability

.0) Source code not included in the standard scope of delivery

.1) Source code created specifically for this project is fully disclosed

- e.g. specific test procedures

.2) Possibility to obtain limited source code of the base library (only method

hulls)

.3) Possibility to deposit complete source code with a trustee

→ Data sheet 168429 for further information

Documents

EP-E Software library