Sound & Vibration
A large number of applicaitons, from preventive maintenance to car and aircraft design, environmental monitoring or even the performing arts can benefit from the modern algorithms of sound and vibration analysis.
Vibration Analysis and Signal Processing in LabVIEW
Dynamic data acquisition has always been at the heart of every sound and vibration application. However, it is not enough to simply be able to acquire data, you also have to be able to analyze, process, and interpret the raw data into meaningful content. National Instruments provides a range of algorithms such as standard frequency analysis; order analysis for monitoring rotating components such as a gearbox; time-frequency analysis for time varying sound and vibration signals; quefrency analysis for detecting harmonics; and wavelet and model based analysis for transient detection. This complete collection of algorithms provides users the ability to properly analyze and monitor their specific machine or device.
Sound & Vibration Hardware
Sound and Vibration products interface with microphones and accelerometers to acquire acoustic and vibration signals. Use these products for audio test, machine condition monitoring, and noise, vibration, and harshness (NVH) applications.
Protecting the Neighborhood from Noise and Vibration
SAPHIR developed the PC-based Surveillance of Acoustics and Vibration in the Environment (SAVE) system to wirelessly monitor acoustics and vibrations generated on construction sites to comply with neighborhood noise regulations, by using NI LabVIEW software, the NI Sound and Vibration Measurement Suite, and NI WiFi data acquisition devices.
Building an Aston Martin Race Engine Vibration Analysis System
ADVITAM developed a structural monitoring system to measure and define the behavior of the Rion-Antirion Bridge during normal operation, strong winds, and earthquakes, by using a combination of four PXI/SCXI chassis linked with the NI LabVIEW Real-Time Module to incorporate the conditioning, acquisition, processing, control, storage, and sharing of measurements.
Developing a Sonic Boom Measurement System
The Japan Aerospace Exploratory Agency developed a real-time monitoring and data-logging system using NI PXI hardware and LabVIEW software that measures sonic booms indoors and outdoors as well as the resulting vibration of the windows and walls of the test building, to capture detailed multichannel sonic boom histories to validate aircraft design concepts that reduce sonic booms, which is necessary for next-generation supersonic transport.
Developing an Innovative Urban Traffic Noise Solution
The Nanyang Technological University developed an automated traffic noise monitoring and surveillance system to aid government authorities in efficiently enforcing against illegally modified vehicles that produce excess noise on roads by using a high-performance dual core processor and FPGAs with CompactRIO hardware and LabVIEW system design software. The rugged and reliable traffic noise monitoring system for overhead bridge deployment, continuously picks up sound from vehicles in a monitored lane, performs real-time analysis to compute the sound pressure level (SPL) of acquired audio, and accordingly triggers the on-board high-speed camera to capture the vehicle plate number.
Predictive Maintenance of Turbines Improves Power Plant Operations
Engie Lab developed the Laborelec Vibration Measurement System (LVMS), which is based on CompactRIO, to monitor vibrations, trigger alarms, and provide all necessary data to their central expert center regardless of power plant location, so their experts can give immediate advice on the continued operation or predictive maintenance of the turbine, delivering remote 24/7 support to power plant operators that experience increased vibrations in their turbine groups.
Analyzing the Performance of Irish Dancers
The University College Dublin optimized the dancers’ performance in different types of shoes by characterising sound through acoustic metrology. They built a system to measure and analyze the reverberation response of the floor surface as dancers strike it to detect flaws in performance and determine the optimum shoe for each dancer by using NI LabVIEW.