Buzz, Squeak, & Rattle Measurement Devices

BSR Observer

Overview

BSR Observer is a software released from BSRTools series, designed to measure and represent the position of noises especially Buzz, Squeak, and Rattle (referred to BSR) which occur in the interior as well as exterior of a vehicle. It offers a real-time window demonstrating accelerometer data logger, quantification of noise sources, and noise cancellation (Noise Gate) in real-time for the data measured through DAQ and accelerometers. The recorded data can be viewed as localization of noise source analysis of Root Mean Square (RMS) and Time-frequency, and Displacement conversion.

BSRTools is a set of different software and hardware tools, each focusing on measuring, evaluating, and identifying various aspects of Buzz, Squeak, and Rattle.

Features

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Hardware

  • 51.2 kS/s per Channel Max. Sampling Rate
  • USB 2.0 Power Supply (NI 9234)
  • IEPE(ICP) type Accelerometer
  • 4 Channel Simultaneous Measurement
  • 26mm Tracking Resolution
  • 102 dB Dynamic Range and 24-bit Resolution
  • Magnetic Mount Base
  • Sensor Cable
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Software(Real-time)

  • Real-time stream of accelerometer data logger
  • Selective Real-time listening to noise source
  • Visual accumulation of evidence to quantify sources of noise
  • Noise Cancellation (Noise Gate)
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Software(Data viewer)

  • Localization of noise sources
  • Analysis of RMS and Time-frequency
  • Noise Cancellation (Noise Gate)
  • Displacement conversion

Specifications

Accelerometer
Type IEPE(ICP)
Sensitivity 100 mV/g
Frequency Range 4 Hz ~ 10 kHz
Data Acquisition
Model NI 9234
Number of Channel 4
Max. Sampling Rate 51.2 KS/s
Dynamic Range 102dB
Analysis
Trigger Simple, Picking Window, Cross-Correlation
General FFT, Octave, Spectrogram

Applications

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BSR noise detection from interior or exterior of a vehicle

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BSR Noise detection from a vehicle component

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