arrow_back_ios

Main Menu

See All Acoustic End-of-Line Test Systems See All DAQ and instruments See All Electroacoustics See All Software See All Sensors See All Vibration Testing Equipment See All リソースセンター See All アプリケーション See All 各産業 See All インサイト See All サービス See All サポート See All 当社の事業 See All 私たちの歴史 See All サステナビリティ(持続可能性) See All グローバルな事業展開
arrow_back_ios

Main Menu

See All Actuators See All Combustion Engines See All Durability See All eDrive See All Transmission Gearboxes See All Turbo Charger See All DAQ Systems See All High Precision and Calibration Systems See All Industrial electronics See All Power Analyser See All S&V Hand-held devices See All S&V Signal conditioner See All Wireless DAQ Systems See All Pinnae See All Accessories See All DAQ See All Drivers API See All nCode - Durability and Fatigue Analysis See All ReliaSoft - Reliability Analysis and Management See All Test Data Management See All Utility See All Vibration Control See All Inertial Sensor Software See All Acoustic See All Current / voltage See All Displacement See All Force See All Inertial Sensors See All Load Cells See All Pressure See All Strain See All Torque See All Vibration See All Exciters See All Smart Sensors IO-Link See All Shaker Systems See All Power Amplifiers See All Vibration Controllers See All 音響 See All 設備とプロセスの監視 See All カスタムセンサ See All データの取得と分析 See All 耐久性および疲労 See All Electric Power Testing(電力テスト) See All NVH See All 信頼性 See All スマートセンサ See All 振動 See All 計量 See All 自動車および地上輸送 See All 校正 See All インストール、メンテナンス、修理 See All サポート :ブリュエル・ケアー製品 See All Release Notes See All コンプライアンス (Compliance) See All Our People
arrow_back_ios

Main Menu

See All CANHEAD See All GenHS See All LAN-XI See All MGCplus See All Optical Interrogators See All QuantumX See All SomatXR See All Fusion-LN See All Accessories See All Hand-held Software See All Accessories See All Wireless Gateways See All Wireless Nodes See All BK Connect Pulse See All API See All Microphone sets See All Cartridges See All Special Microphones See All Acoustic Calibrators See All Microphone Pre-amplifiers See All Sound Sources See All Acoustic Transducer Accessories See All Accessories See All Digital load cells See All Accessories See All Experimental testing See All Transducer Manufacturing (OEM) See All Accessories See All Rotary Torque Sensors See All CCLD (IEPE) accelerometers See All Charge Accelerometers See All Impulse hammers / impedance heads See All Cables See All Accessories See All Accessories See All Power amplifier See All Accessories for exciters See All 電気音響 See All 音源探査(Noise source identification, NSI) See All 環境騒音 See All 音響パワーと音圧 See All 騒音認証 See All 産業用プロセスコントロール See All 構造ヘルスモニタリング See All 電気デバイス試験 See All 電気システム試験 See All グリッド試験 See All 高電圧試験 See All 導電加振機による振動試験 See All 構造力学 See All 機械分析と診断 See All プロセス計量 See All 車両の電動化 See All トランスデューサの校正サービス See All ハンドヘルド測定器の校正サービス See All 機器およびDAQの校正サービス See All 現地での校正 See All リソース See All ソフトウェアライセンス管理

Acoustic Beamforming on Moving Rail Vehicles - BZ-5939

Software for noise source location on moving rail vehicles in combination with a portable microphone array.

img

Acoustic Beamforming on Moving Rail Vehicles - BZ-5939

expand_more
chevron_left
chevron_right

This PULSE software performs noise source location of noise radiated from moving rail vehicles such as trams and trains, using a microphone array. Acoustic results from the beamforming system are displayed in colour contour maps that clearly visualize the noise ‘hotspots’and show how noise propagates from various locations. This noise map is superimposed on a representation of the rail vehicle, so the user can clearly see the noise levels from each of the vehicle’s components, such as the nose or first bogie, and gain insights into the sound’s directivity.

 

Mapping the whole or part of the rail vehicle enables differentiation between aerodynamic noise and rolling noise from the interaction of the wheels with the rails and rail sleepers. Smaller areas such as the pantograph can be targeted, and the contributed sound power can be calculated, thus enabling the user to easily rank the areas in order of importance. Identifying the most important sub-sources of noise such as inter-coach gangways in terms of position, frequency content and sound power radiation helps decide where design changes can most effectively reduce overall noise radiation – either reducing noise levels or optimizing their content and noise propagation. 

CAPABILITIES 

  • Maps moving noise sources from the side of the train
  • Presents acoustic maps of sound pressure, pressure contribution density and sound intensity 
  • Displays sound maps versus position, and pressure contribution versus position and frequency
  • Presents and communicates results and ideas through tools such as AVI file
  • Mapping of targets much larger than the array itself

Users can make any type of signal processing or hear any microphone signal in very high quality, thanks to the system’s high sampling rate of more than 65 kHz per channel. This also enables it to map high frequencies. This performance is especially useful for high-speed trains, for which noise source identification is an essential step towards reducing the maximum pass-by noise levels.

  • Trackside measurements of actual trains and metro systems in operation
  • Troubleshooting during train pass-by measurements
  • Analyzing and ranking noise sources to target mitigation 
  • Communicating sound intuitively