noiselab.dk

noiseLAB

and

noiseLABWind

Wind Turbine

Noise Certification

To IEC 61400-11

Edition 3

noiselab.dk

noiselab.dk

noiselab.dk

noiselab.dk

The noiseLAB Family

• noiseLAB Express (€79 on line and OEM only):

– Easy import, calibration and analysis of .wav files

• noiseLAB Pro

– Multi-channel recording, editing, and analysis of noise

and vibration signals, including sound quality, tone and

impulse metrics.

• noiseLAB Wind

– Customized Wind Turbine Recording and analysis to

IEC 61400-11

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noiseLAB Pro: The next generation

• Recorder/Editor

– Focus on ease of use and performance

• Batch Processor

– Focus on power and flexibility.

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What new?

• Inputs

– Sound Cards

– Wide Range of NI devices

– Wireless NI Devices

– .wav files

• Simple, intuitive calibration

• Fast file loading

• One click editing.

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Listen

Play (shortcut Space) Volume Control with extra gain.

Red indicates overload.

Left/Right Ch.

Assign for multi-

Channel Files.

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Scrub

Drag Cursor View Oct or FFT spectrum at

Cursor position.

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Edit

Edit Mode

Start

End

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Single Gesture Edit

• Click, drag, release

• “C” to Create Clip

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Multiple Clips

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Sound Level Results

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Octave Results

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Octave Results with Table

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FFT Results

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Export to Excel

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Key Features

• Fast

• Streamlined Calibration

• Simple Workflow

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Power

• Batch Processing of

– Import

– Calibration

– Analysis

– Export

• Editing

– Combined with listening and scrubbing helps data

validation.

• Quality: Type 1 analysis.

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Extras

• Name change

• Edit time stamp

• Annotation

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Calibration by theft

• Steal the data from your Cal File

• Apply to all other Recordings

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Clever Cursors

• Arrow Left Right: Single step

• Arrow Up Down: Peak jump

• Shift Arrow: Green Cursor

• CTRL Arrow: Red Cursor

• Key in X value.

• Scroll on Any digit

• Eng. Entry

• H to to find cursors

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Family Fun

Mother

6 Grey Kids

Selected

Clip

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Find your Mother in Results

Mother Result

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Graphs and Scaling

• Or key in Start or End of Axes

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Zoom/Scroll

Center at cursor and zoom Scroll the X axis

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Growth Path

• To more Advanced Editions

– Vibration

– Sound Quality

– Tone Analysis

– Impulse Annoyance

noiselab.dk

The noiseLAB Family

• noiseLAB Express:

– Easy import, calibration and analysis of .wav files

• noiseLAB Pro

– Multi-channel recording, editing, and analysis of noise

and vibration signals, including sound quality, tone and

impulse metrics.

• noiseLAB Wind

– Customized Wind Turbine Recording and analysis to

IEC 61400-11

noiselab.dk

noiseLAB

Simple

Powerful

Growth

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Download at…

http://noiselabdk.wordpress.com/

http://noiselabdk.wordpress.com/http://noiselabdk.wordpress.com/

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noiseLAB Wind: Now a DELTA product

• Key selling points

– We know the standard (DELTA wrote 80% of it)

– Long experience certifying turbines from large

manufacturers.

– Field proved experience with first generation software

– Certified Second generation

– Open Data Formats

– Robust wireless transmission.

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Two types of users

• Consultants: a la carte

• Large certifications organizations Turn key

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Background

• Denmark as ”home’ of wind turbines

• Standardization Process

• Field Experience

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Standardization

• IEC 61400-11, Edition 2 and 3

• The Danish paradox

• Multiple national standards

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Tools

• Wireless acoustic front end

• Meteorology

• Turbine DSC interfaces

• Data Recording

• Basic Signal Processing

• Front end software

– Now in second generation software, noiseLAB Wind

• Post-processing and reporting

• Certification

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Logistics

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Front end

• Digitizers

– 24 bit anti-aliased 4 ch. ADCs

– IEPE powering of instrumentation microphones

– Battery powered

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1000 m wireless real time audio streaming

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Wi-Fi Receiver with Ethernet to Data logger PC

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Data Collection Software (noiseLAB Wind)

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Inputs

• Up to 16 acoustic channels (USB, Ethernet or Wi-Fi) with

autocal.

• Up to 16 analog channels (Anemometers, process control

outputs, other instrumentation (gain/offset adjustable)

• N channels via COM ports (turbine specific)

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Other inputs

• Wind Turbine Power Curve

• Anemometer cal factors

• Wind Screen calibration curve

• Turbine metadata

• Operator time-stamped log of comments.

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Data pre-processing

• Acoustical Time Slice (10 or 60 s as per standard)

– FFT

– 1/3 octave (A weighted and Linear in parallel)

– Sound Level/Leq

• All turbine parameters (1 s averaging)

– Yaw, pitch, power, RPM etc.

• All Meteo parameters (1 s averaging)

• All derived parameters as per IEC 61400

– V (P,n), V(Z,n) etc.

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Stream to disk

• All time waveforms with 128-bit time-stamp, 32 bit floating

point, 2^64 max samples.

• TDMS (National Instruments) readable from

– LabVIEW

– MatLab

– Diadem

– Excel etc.

• Robust, crash survivable format.

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Spectra to Disk

• FFT (10 or 60 s blocks) (crash robust format)

• Octave A and Lin

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Monitoring

• Real time scalar parameters: Always visible

• Real time listening of any acoustic channel (with enough

gain so you can hear it)

• Real time “scope” on any input signal regardless of source.

• Real time kappa mu curve fitting

• Wind direction function of time

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Ad hoc monitoring

• User-defined parameters for ad hoc FFT, Sound Level and

1/N octave analysis (independent of spectra stored to disk)

• Ugly fat plots readable in daylight

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Monitoring of wind-binning

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Scatter plots of anything vs. anything.

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Post-processing (MatLab or Excel)

• Sound Level

• Sound Power

• Tone Analysis

• Data selection (outliers etc.)

• Measurement uncertainty calculations.

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Challenges solved

• Wireless data acquisition

• Full IEC 61400-11, Danish MST support

• Robustness

• Highly interactive user interface

• High performance

• “Go-back-to ability” (raw waveforms for everything saved)

• ISO 9001 audited

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noiseLAB Wind: Set-up Overview

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Scatter Plot, Wind Direction and Curve fitting

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Scatterplot of Leq

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Monitor Live Sound Level

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Monitor Live 1/3 Octave Spectrum

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Scatter Plot Leq vs. Wind Bind

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Curve fitting Wind Speed based on Power

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More Scatter Plots

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Live monitoring of any input signal

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Turtle Microphone with WiFi Node

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Wi Fi Router—up to 500 m line-of-sight real time

sound transmission (up to 4 chs)

noiselab.dk

noiseLAB Wind

Simple

Powerful

Customized Solutions