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MEASURING MECHANICAL VIBRATIONS USING AN ARDUINO AS A SLAVE I/O TO AN EPICS CONTROL SYSTEM Adam Hjort & Måns Holmberg Supervisor: Volker Ziemann & Konrad Gajewski

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Page 1: MEASURING MECHANICAL VIBRATIONS USING … MECHANICAL VIBRATIONS USING AN ARDUINO ... ADXL335 - ACCELEROMETER 3 axis analog accelerometer ± 3 g

MEASURING MECHANICAL VIBRATIONS USING AN ARDUINO AS A SLAVE I/O TO AN EPICS CONTROL SYSTEM Adam Hjort & Måns HolmbergSupervisor: Volker Ziemann & Konrad Gajewski

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GOALS OF THE PROJECT

Arduino Slave

Connect accelerometers

Serial communication

Protocol design

Matlab analysis of data

Transfer function

EPICS integration

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HARDWARE

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ARDUINO SLAVE

Arduino UNO

8-bit microcontroller

ATmega328

2 kb SRAM memory 8-bit microcontroller

Sampling frequency of 1 kHz

Custom made serial protocol for easy implementation

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ADXL335 - ACCELEROMETER

3 axis analog accelerometer

± 3 g

25-1600 Hz sampling rate

Low cost (~15$)

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• Adin 26W vibration speaker

• Bluetooth

TONE GENERATOR

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SOFTWARE

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ARDUINO PROGRAMING

User Friendly

Based on C/C++

setup() and loop()

Page 9: MEASURING MECHANICAL VIBRATIONS USING … MECHANICAL VIBRATIONS USING AN ARDUINO ... ADXL335 - ACCELEROMETER 3 axis analog accelerometer ± 3 g

ARDUINO INTERRUPTS

MsTimer2

Triggered by timer overflows

1 ms resolution

1 Khz sampling

Page 10: MEASURING MECHANICAL VIBRATIONS USING … MECHANICAL VIBRATIONS USING AN ARDUINO ... ADXL335 - ACCELEROMETER 3 axis analog accelerometer ± 3 g

MATLAB ANALYSISGUI for easy testing

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ACCELEROMETER RESPONSE TEST

Linear chirp 100-250 Hz

Linear response

Visible harmonics due to table

Page 12: MEASURING MECHANICAL VIBRATIONS USING … MECHANICAL VIBRATIONS USING AN ARDUINO ... ADXL335 - ACCELEROMETER 3 axis analog accelerometer ± 3 g

EPICS INTEGRATIONImplement protocol in EPICS database-file.

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EPICS

Arduino

Acc 2Acc I

Seriell adapterRS232

SwitchIP

IOC

CAUSER

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EPICS

IOCDatabase

Protocolget_analog

User Inputcaget STRDEV:A0

User outputSTRDEV:A0

496

RecordsSTRDEV:A0

AI record

Out: A01?In: A01 %d

Page 15: MEASURING MECHANICAL VIBRATIONS USING … MECHANICAL VIBRATIONS USING AN ARDUINO ... ADXL335 - ACCELEROMETER 3 axis analog accelerometer ± 3 g

EPICS

Arduino

Acc 2Acc I

Seriell adapterRS232

SwitchIP

IOC

CAUSER

Page 16: MEASURING MECHANICAL VIBRATIONS USING … MECHANICAL VIBRATIONS USING AN ARDUINO ... ADXL335 - ACCELEROMETER 3 axis analog accelerometer ± 3 g

ELECTRONIC SCHEMATICMAX232 IC to connect to serial switch

Page 17: MEASURING MECHANICAL VIBRATIONS USING … MECHANICAL VIBRATIONS USING AN ARDUINO ... ADXL335 - ACCELEROMETER 3 axis analog accelerometer ± 3 g

FOR FUTURE STUDENT TO DO

GUI

Wireless

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VACUUM PUMP

30 minutes of sampling

Accelerometer 1 on pump

Accelerometer 2 on floor

FFT

Corelate

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TRANSFER FUNCTION

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Page 22: MEASURING MECHANICAL VIBRATIONS USING … MECHANICAL VIBRATIONS USING AN ARDUINO ... ADXL335 - ACCELEROMETER 3 axis analog accelerometer ± 3 g

QUESTIONS?

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Acquiring Data from an ADXL335 Accelerometer

ADXL335 Datasheet

DIGIKEY DKSB1002A Evaluation Board 3-axis accelerometer Arduino Uno microcontroller board Acquiring Data from an ADXL335 Accelerometer living with the

Part 0: Background reading & helpful tutorials (ADXL335) 1. Disconnect any sensors, etc. from the terminals of the Arduino. 2. Hook up an accelerometer directly to the Arduino analog

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Accelerometer and Gyroscopes Sensors: Operation, · PDF fileKeywords: MEMS, Accelerometer, Gyroscope Sensors APPLICATION NOTE 5830 ACCELEROMETER AND GYROSCOPES SENSORS: OPERATION,

ADXL345BCCZ Accelerometer

Accelerometer Vehicle

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ADXL335 Small, Low Power, 3-Axis ±3 g Accelerometer (Rev ... · 4 mm × 4 mm × 1.45 mm LFCSP . Low power : 350 μA (typical) Single-supply operation: 1.8 V to 3.6 V . 10,000 . g

Accelerometer Brochure

Accelerometer Tech.information

Adafruit Analog Accelerometer Breakouts · 2017. 9. 20. · Overview The ADXL335 , ADXL326 and ADXL377 are low-power, 3-axis MEMS accelerometer modules with ratiometric analog voltage

Grove - HCHO Sensor - Mouser Electronics 1. Introduction The ADXL335 is a small, thin, low power, complete 3-axis accelerometer with signal conditioned voltage outputs. …

(2 point deduction for failure to complete this problem!)dehall/LWTL/ENGR122/notes/10_exam1_2015.pdf3 8. (3 points) The most correct statement about the ADXL335 Accelerometer is (wrt

Accelerometer datsheet

Lab 4 – LCDs and Accelerometersese111/Fall2014labs/Lab4 .pdfLab 4 – LCDs and Accelerometers Introduction: In this lab, will learn how to use a LCD ... ADXL335, 3-axis Accelerometer

ADXL335 (Rev. B)...The ADXL335 is available in a small, low profile, 4 mm × 4 mm × 1.45 mm, 16-lead, plastic lead frame chip scale package (LFCSP_LQ). FUNCTIONAL BLOCK DIAGRAM 0

ESEN241 GY-Sensor GY-61 - Thaieasyelec · GY-61 เป็นโมดูล Accelerometers บนโมดูลประกอบด้วยชิป ADXL335 เอาต์พุตที่ได้เป็นแบบ

Accelerometer - ADXL362

Themed Section: Science and Technology 3D Vibration ... · International Journal of Scientific Research in Scienceand Technology () 18 B. Monitoring of vibrations in car Accelerometer

Accelerometer Based

Digital Accelerometer

Accelerometer Sensor

Accelerometer-Based Transportation Mode Detection … · Accelerometer-Based Transportation Mode Detection on Smartphones ... patterns, and a hierarchical ... in accelerometer-based

Accelerometer Reset

Pushpendra Jha and Preeti Khurana - serialsjournals.comserialsjournals.com/serialjournalmanager/pdf/1486638441.pdf · In this Hand Gesture Controlled Wheelchair an ADXL335 accelerometer

Mechanical Vibrations - Forced Vibrations

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Bike Dash - UCF Department of EECS 3.17 - Features of ADXL335 Accelerometer Page 39 Table 3.22 ... Bike Dash is a product idea that implements an easy to use bike monitoring system

Industrial piezoelectric accelerometer design - wilcoxon.com · Industrial accelerometer design, 2009 Wilcoxon Sensing Technologies proprietary 6 • What is an accelerometer –A

2 major adxl335.doc

Design of Piezoresistive MEMS Accelerometer with Optimized ... · Design of Piezoresistive MEMS Accelerometer ... thesis entitled “Design of Piezoresistive MEMS Accelerometer with