NVH Testing • Mobile Data Acquisition • Drive File Generation • BSR testing • Sound Quality Testing
MB BSR SUITE is the complete solution for all measurement tasks in the field of NVH, Squeak & Rattle and Sound Quality testing. Comprehensive analysis and assessment capabilities also enable the use of the BSR Suite for analysis and evaluation of functional and operating noise, vibrational effects on humans as well as the acoustic and haptic feedback of controls and actuators.
Predefined test configurations for typical tasks such as multi-channel road load data acquisition, drive-file generation and objective Squeak & Rattle and Sound Quality testing allow for fast and simple operation. Signal statistics and user defined thresholds or reference-curves can be used for objective evaluation of different acoustic or haptic quality criteria.
BSR Editor enables comprehensive editing, filtering, analysis and conversion of recorded time signal data. Editing multiple records in parallel enables very easy and effective ways to compare and combine different recordings. Cut, Copy and Paste of relevant time signal sections from different recordings into a new file is intuitive and easy. Integrated know-how and procedures to transfer vibration conditions from the road to the lab improve the simulation quality and correlation to road testing. Contact MB to find a solution for your measurement task!
- Muti-channel NVH Analysis
- Order-Analysis
- Sound Quality Analysis
- Road Load Data Acquisition (RLDA) with up to 64 channels
- Drive-File generation for full vehicle and component BSR test systems
- Transfer of recorded excitation conditions to single or multi-axis shaker systems
- Alignment of excitation profiles and shaker test systems
- Objective Squeak & Rattle Testing according to different test specifications such as GMW14011, FORD CETP-L413, PSA with switchable Adaptive Background Noise Compensation for repeatable and comparable Squeak & Rattle tests
- Analysis, documentation and evaluation of Squeaks & Rattles and functional and operating noises
- Analysis of relative motions and interface forces for Squeak & Itch Testing
- 4 to 64 measuring channels (scalable) incl. switchable IEPE power supply
- 24bit A/D converter with sampling rates up to 105.4kHz
- High real-time bandwidths through support of multi-core technology
- Time data recording parallel to running real-time analysis
- Predefined setups for drive file generation, S&R testing according to customer standards, sound quality analysis etc.
- Maximum resolution in time and frequency domain due to freely definable block lengths for each analysis
- Stationary loudness (according to ISO 532B, DIN45631 and ISO/R 131) and
- Instationary loudness (according to DIN45631/A) with switchable Adaptive Background Noise Compensation
- Sound Quality Option for the analysis and evaluation of sharpness, roughness, tonality and fluctuation of a sound.
- Testing of analysis results against definable limit values, limit value curves or reference spectra
- Software interface for integration into line-integrated acoustic test benches
- Optional Test Sequencer enables fully automated climate-controlled Squeak & Rattle tests
- Virtual input channels for arithmetic linking of different input signals
- Import of externally recorded measurement data (TXT, CSV, WAV, RPC III…)
- Conversion of recorded measurement data and measurement results into common standard formats (TXT, CSV, WAV, RPC III…)
- Direct transfer (copy & paste) of measurement data and graphs to Office programs for further processing and documentation
- Recommended operating system: Windows Windows 10 64-bit
Systems with 8 to 16 input channels – USB powered
8-16 input channels, USB powered: MB DAQ 8256 8-channel USB frontend | |
Analog inputs: | 8 |
Sampling rate: | 0.5 to 256 kS/s |
IEPE supply: | 4mA ±5%, 22V compliance, open and short-circuit input detection |
Input Voltage Ranges: | ±1.2V and ±12V |
Coupling: | DC, AC @ 1Hz, AC @ 150Hz, single-ended or differential |
SFDR | 12V range: 138dB @ 102.4kS/s 1.2V range: 137dB @ 102.4kS/s |
SNR | 12V range: 107dB @ 102.4kS/s 1.2V range: 106dB @ 102.4kS/s |
Digital inputs | 4, TTL (GPIO, frequency, pulse width, quadrature encoder) |
Digital outputs | 2, TTL (GPIO, PWM) |
Cascadable: | Yes, synchronization of up to 2 modules resulting in max. 16 input channels |
Power supply: | 9-36VDC |
Systems with 16 to 64 input channels
16-64 input channels: DT9857 16-channel frontend | |
Analog inputs: | 16, simultaneous sampling, 24-bit A/D converter |
Max. sampling rate: | 105.4 kHz per channel |
IEPE-power supply: | 4mA, software switchable for each channel |
Input Voltage Ranges: | ±10V, ±1V |
Coupling: | AC/DC, AC cut-off frequency @ 0.1Hz |
Analog outputs: | 2, 32-bit D/A, ±10V output voltage range |
Trigger: | External (digital) or Threshold (analog) |
RPM-Input: | 1, input voltage range ±30V |
Digital I/O: | 16 (8 inputs, 8 outputs) |
Cascadable: | Yes, synchronization of up to 4 modules resulting in max. 64 input channels |
Power supply: | External power supply 4,75VDC to 28VDC |
Support of Sound Cards (internal & external)
If no other hardware is available BSR SUITE enables the use of internal or external sound cards for 2 channel data acquisition and analysis during training sessions or demonstration. However the use of standard sound cards for NVH testing is not recommended! MB Dynamics cannot test and guarantee the correct function of different soundcards, hardware drivers and the resulting accuracy of measurement data. In addition sound cards can also be used for online monitoring of selectable input channels and playback of recorded time signals.
BSR SUITE Signal Conditioning, Analysis & Testing Features
BSR SUITE – Data Acquisition & Signal conditioning
Data Acquisition | |
Sampling rates: | 1024-105400 S/s, user definable |
Data acquisition block size: | Automatic, optimized for max. real-time bandwidth, independent from analysis block size |
Analysis block size: | 1024-65536 samples, user selectable, independent for each analysis |
Waveform recording: | Throughput to HD parallel to real-time analysis Up to 105400S/s on 16 channels Up to 52700S/s on 32 channels Up to 25600S/s on 64 channels |
Trigger functions: | External Trigger: TTL, dedicated BNC input Level trigger: user selectable input channel, definable trigger threshold and Pre-Trigger |
Virtual Arithmetic Channels | |
Functionality: |
Definition of additional virtual channels by arithmetic combination of physical input channels |
Channel arithmetic: | Addition, Difference, Average |
Input Monitoring & Playback | |
Real-time: |
Monitoring of user selectable input channels over internal sound card (max. 2 channels) |
Offline: | Playback of recorded time history data over internal sound card |
Signal Conditioning | |
Filter type: |
Low-Pass, High-Pass, Band-Pass & Band Stop with user selectable filter frequencies |
Filter design: | Butterworth, Chebyshev with user selectable filter order |
Integration (time domain): | Single & double integration in time domain |
Weighting filters: | Linear, A-, B- and C-Weighting |
BSR SUITE – Analysis features
Analyses | |
Vibration Level | |
RMS vibration level | Over time or frequency (sweep) with user selectable Start- & Stop-frequencies and frequency resolution |
Peak vibration level | Over time or frequency (sweep) with user selectable Start- & Stop-frequencies and frequency resolution |
Exp. avg. vibration level | Over time or frequency (sweep) with user selectable Start- & Stop-frequencies and frequency resolution Time constants: FAST, SLOW, IMPULSE, CUSTOM |
Crest factor | Over time or frequency (sweep) with user selectable Start- & Stop-frequencies and frequency resolution |
Sound Level | |
Equivalent sound level (Leq) | Over time or frequency (sweep) with user selectable Start- & Stop-frequencies and frequency resolution |
Peak sound level | Over time or frequency (sweep) with user selectable Start- & Stop-frequencies and frequency resolution |
Exp. avg. sound level | Over time or frequency (sweep) with user selectable Start- & Stop-frequencies and frequency resolution Time constants: FAST, SLOW, IMPULSE, CUSTOM |
Frequency Analysis | |
Analysis: | Narrowband FFT, Power Spectral Density (PSD) |
FFT block size: | 1024-65536 Samples independent for each analysis and independent from data acquisition block size |
Window functions: | Rectangle, Hanning, Flat Top, Gaussian, Blackman |
Averaging intervals: | Spectral averaging over up to 4 user definable time intervals + overall measurement |
Averaging methods: | Linear, Peak-Hold |
1/n Octave Analysis | |
Analysis: | 1/1-, 1/3-, 1/6-, 1/12- & 1/24-Octave band spectra |
Time constants: | FAST, SLOW, IMPULSE, CUSTOM |
Averaging methods: | Linear, Peak-Hold |
Stationary Loudness | |
Stationary Loudness in compliance with ISO 532B; DIN45631 and ISO/R131 | |
Loudness level in [Sone] or [Phon] over time | |
Loudness level in [Sone] or [Phon] over frequency | |
Specific Loudness spectra | |
Time Varying Loudness | |
Time Varying Loudness in compliance with DIN45631/A1 | |
Loudness level in [Sone] over time | |
Loudness level in [Sone] over frequency | |
Specific Loudness spectra, 2D- or 3D- plot |
Signal Statistics | |
Time intervals | Calculation of statistical values over up to 4 user definable time intervals + overall measurement |
Statistical Analysis | Max, Min, Max-Min, Average |
Percentile Levels | Calculation of user definable percentile levels (N1- to N99) in real-time |
Sound Quality Analyses (Option) | |
Sharpness |
Sharpness in [acum] over time Specific Sharpness spectra |
Roughness | Roughness in [asper] over time Specific Roughness spectra |
Tonality | Tonality in [tu] over time 1/3 octave band spectra |
Fluctuation Strength | Fluctuation Strength in [vacil] over time Specific Fluctuation Strength spectra |
Averaging intervals: | Spectral averaging over up to 4 user definable time intervals + overall measurement |
Averaging methods: | Linear, Peak-Hold |
Order- & Signature Analysis (Option) | |
Order Waveform Filtering | Extraction of order waveforms of one or multiple user selectable orders. Save, export and playback of filtered time signal and extracted order waveform |
RPM Profile Generator | Offline extraction of RPM profile by interactive definition of one or multiple orders in a 3D sonogram |
Order Power Spectrum | 3D-Order Power spectrum over time or RPM |
FFT | 3D-Sonogram of FFT spectra over time or RPM |
BSR SUITE – Testing features
Testing against statistical thresholds, threshold curves or reference spectra | |
Statistical thresholds | |
Testing strategy: | Testing against user definable upper and lower thresholds for each statistical analysis and each input channel |
Statistical Analysis: | Max, Min, Max-Min, Average, percentile levels |
Intervals: | Independent thresholds for up to 4 user definable time intervals (e.g. FORWARD, BACKWARD, UP, DOWN) and overall measurement |
Threshold curves | |
Testing strategy: | User definable upper and lower threshold curves of level over time or level over frequency |
Definition: | Definition in Threshold Editor or copy/paste from reference measurements |
Reference spectra | |
Testing strategy: | Testing of exceedance and / or underrun of user definable or measured upper and lower reference spectra |
Analyses: | FFT, PSD, 1/n Octave, Specific Loudness |
Intervals: | Independent averaging methods and reference spectra for up to 4 user definable time intervals (e.g. FORWARD, BACKWARD, UP, DOWN) and overall measurement |
Definition | Definition in Threshold Editor or copy/paste from reference measurements |
- Muti-channel NVH Analysis
- Order-Analysis
- Sound Quality Analysis
- Road Load Data Acquisition (RLDA) with up to 64 channels
- Drive-File generation for full vehicle and component BSR test systems
- Transfer of recorded excitation conditions to single or multi-axis shaker systems
- Alignment of excitation profiles and shaker test systems
- Objective Squeak & Rattle Testing according to different test specifications such as GMW14011, FORD CETP-L413, PSA with switchable Adaptive Background Noise Compensation for repeatable and comparable Squeak & Rattle tests
- Analysis, documentation and evaluation of Squeaks & Rattles and functional and operating noises
- Analysis of relative motions and interface forces for Squeak & Itch Testing
- 4 to 64 measuring channels (scalable) incl. switchable IEPE power supply
- 24bit A/D converter with sampling rates up to 105.4kHz
- High real-time bandwidths through support of multi-core technology
- Time data recording parallel to running real-time analysis
- Predefined setups for drive file generation, S&R testing according to customer standards, sound quality analysis etc.
- Maximum resolution in time and frequency domain due to freely definable block lengths for each analysis
- Stationary loudness (according to ISO 532B, DIN45631 and ISO/R 131) and
- Instationary loudness (according to DIN45631/A) with switchable Adaptive Background Noise Compensation
- Sound Quality Option for the analysis and evaluation of sharpness, roughness, tonality and fluctuation of a sound.
- Testing of analysis results against definable limit values, limit value curves or reference spectra
- Software interface for integration into line-integrated acoustic test benches
- Optional Test Sequencer enables fully automated climate-controlled Squeak & Rattle tests
- Virtual input channels for arithmetic linking of different input signals
- Import of externally recorded measurement data (TXT, CSV, WAV, RPC III…)
- Conversion of recorded measurement data and measurement results into common standard formats (TXT, CSV, WAV, RPC III…)
- Direct transfer (copy & paste) of measurement data and graphs to Office programs for further processing and documentation
- Recommended operating system: Windows Windows 10 64-bit