LabVIEW-Arduino Interfacing for Data Aqcuisition and ...

LabVIEW-Arduino Interfacing for Data Acquisition and Telemetry System P R E PA R E D BY: TO M M Y S U G I A RTO P U S AT T E K N O LO G I P E N E R BA N G A N L E M BA G A P E N E R BA N G A N & A N TA R I KS A N A S I O N A L

Outline 1st Day:

Data Acquisition and Telemetry System LabVIEW-Arduino Interfacing: Interfacing Arduino to LabVIEW with NI-VISA

Interfacing Arduino to LabVIEW with LIFA (LabVIEW Interface for Arduino) 2nd Day: Build a UAV Telemetry Sytem with Arduino and LabVIEW Creating Quality UIs with LabVIEW Build an Installer and .exe Application for Your LabVIEW Project

Data Acquisition Data acquisition (DAQ) is the process of measuring an electrical or physical phenomenon such as voltage, current, temperature, pressure, or sound with a computer. A DAQ system consists of sensors, DAQ measurement hardware, and a computer with programmable software (www.ni.com/data-acquisition/what-is/)

Telemetry System Telemetry is an automated communications process by which measurements are made and other data collected at remote or inaccessible points and transmitted to receiving equipment for monitoring ("Telemetry: Summary of concept and rationale". NASA report. SAO/NASA ADS Physics Abstract Service. Retrieved 19 December 2014)

LabVIEW-Arduino Interfacing Use VISA (NI Serial Communication) Use LIFA (LabVIEW Interface for Arduino)

NI-VISA The Virtual Instrument Software Architecture (VISA) is a standard for configuring, programming, and troubleshooting instrumentation systems comprising GPIB, VXI, PXI, Serial, Ethernet, and/or USB interfaces. VISA provides the programming interface between the hardware and development environments such as LabVIEW, LabWindows/CVI, and Measurement Studio for Microsoft Visual Studio.

NI-VISA (cont) Some important block diagram from VISA’s Pallete

VISA Open Opens a session to the device specified by VISA resource name and returns a session identifier that can be used to call any other operations of that device.

VISA Read Reads the specified number of bytes from the device or interface specified by VISA resource name and returns the data in read buffer.

NI-VISA (cont) VISA Write Writes the data from write buffer to the device or interface specified by VISA resource name.

VISA Close Closes a device session or event object specified by VISA resource name.

NI-VISA Example Read serial data from arduino: void setup() { // initialize serial communication at 9600 bits per second: Serial.begin(9600); } // the loop routine runs over and over again forever: void loop() { // read the input on analog pin 0: int sensorValue = analogRead(A0); // print out the value you read: Serial.println(sensorValue); delay(100);

// delay in between reads for stability}

LIFA (LabVIEW Interface for Arduino) The LabVIEW Interface for Arduino (LIFA) Toolkit allows developers to acquire data from the Arduino microcontroller and process it in the LabVIEW Install LIFA on your LabVIEW Download LIFA Firmware to your Arduino (via Arduino IDE)

Build your code in Arduino with LIFA Block Diagram

LIFA (Cont) Some important block diagram from LIFA’s pallete

Initialize a connection to an Arduino running the LIFA sketch

Close the active connection with Arduino

LIFA (Cont) Analog Read: reads the analog voltage on the selected Arduino Analog Input Pin (A0-A5)

Digital Read: reads the digital value of the selected Arduino Digital Input Pin (D0-D13)

LIFA (Cont) Digital Write Pin: Write the specified value on the selected digital output pin (D0-D13)

Set Digital Pin Mode: Configure the specified digital I/O pin as either input or output

LIFA Example Simple Analog Read sketch:

Exercise 1. Make a Voltage Measurement with VISA and display it on LabVIEW User Interface 2. Make 3 channel Voltage Measurement with LIFA and display it on LabVIEW User Interface 3. Make a blink LED control with LIFA

Build a UAV Telemetry System with Arduino and LabVIEW To make a good Telemetry System for UAV with Arduino and LabVIEW, we need some important things: Arduino Programming (with Arduino IDE) LabVIEW programming

Data Encoding and Parsing Sensor calibrating and data processing Radio Communication (RF)

Arduino Programming Setting the Arduino baudrate, make sure that the baudrate on the Arduino and the Radio Modem are the same Setting the SDcard for datalogger Make a sketch for ADC reading and convert it into Voltage Reading

Make the encode for each sensor data Write data to SDcard Display it on serial communication

Arduino Programming (Cont)

LabVIEW Programming Open a VISA Serial session Initialize excel file saving Read Serial data from Arduino Parse the Serial data Convert the Data from string to decimal data Input the calibration factor (if any) and process the data by averaging it

Write the data to .xls file and display it on LabVIEW User Interface Close VISA Serial session

LabVIEW Programming (Cont)

LabVIEW Programming (Cont)

Data Encoding and Parsing

Data Encoding and Parsing (Cont) Serial Data Format: AABBCCDD

Sensor 1 Volt. Data Encoding code1 Sensor 2 Volt. Data Encoding code2

Convert String Data to Decimal Convert Fract or Exp or Decimal String into Number

Calibrating and Averaging the Data Insert the calibration factor into the Formula Node blokc diagram for calibrate the sensor data Input the data to Time Averaging block diagram for getting smoother data output

Write Data to Ms.Excel

Creating Quality UI with LabVIEW Some General Rules:

1. Dont be innovative Use familiar elements 2. Less is more Too much on screen at once is distcracting Allow your user to focus on what is important

3. Think about your user Explains what button do Know how the user plans on using your application

Build an Installer and .exe Application for Your LabVIEW Project Click Tools  Build Application (EXE) from VI

On the Project dialog box, right click on Build Specification  New  Application / Installer

Build Application (.EXE) from VI Insert your VI to app builder and then costumize your app setting by adding some icon or app version information

Build Installer for Your .EXE Application After build application (.exe) from your VI, now build your .exe installer so user with no LabVIEW installed on their computer can use your program On the Build Installer dialog box insert your .exe app to source file

Build Installer for Your .EXE Application On Additional Installer option, checklist the box Automatically select recommended installer

For Your Advance Reference http://www.ieee.li/pdf/viewgraphs/creating_quality_uis_with_labview.pdf

https://www.ni.com/visa/ www.ni.com/pdf/manuals/370423a.pdf https://drive.google.com/file/d/0B1npovSveBOSQ0lUUFYxUUVCdms/view?usp=sharing

https://drive.google.com/file/d/0B1npovSveBOST1YwcWJMV0p1YjQ/view?usp=sharing

Thank You