arrow_back_ios

Main Menu

See All Software See All Instruments See All Transducers See All Vibration Testing Equipment See All Electroacoustics See All Acoustic End-of-Line Test Systems See All Academy See All Resource Center See All Applications See All Industries See All Services See All Support See All Our Business See All Our History See All Global Presence
arrow_back_ios

Main Menu

See All Analysis & Simulation Software See All DAQ Software See All Drivers & API See All Utility See All Vibration Control See All High Precision and Calibration Systems See All DAQ Systems See All S&V Handheld Devices See All Industrial Electronics See All Power Analyzer See All S&V Signal Conditioner See All Acoustic Transducers See All Current and Voltage Sensors See All Displacement Sensors See All Force Sensors See All Load Cells See All Multi Component Sensors See All Pressure Sensors See All Strain Sensors See All Strain Gauges See All Temperature Sensors See All Tilt Sensors See All Torque Sensors See All Vibration Transducers See All Accessories for Vibration Testing Equipment See All Vibration Controllers See All Measurement Exciters See All Modal Exciters See All Power Amplifiers See All LDS Shaker Systems See All Test Solutions See All Actuators See All Combustion Engines See All Durability See All eDrive See All Production Testing Sensors See All Transmission & Gearboxes See All Turbo Charger See All Training Courses See All Upcoming Webinars See All Acoustics See All Asset & Process Monitoring See All Durability & Fatigue See All Electric Power Testing See All NVH See All OEM Custom Sensors See All Reliability See All Structural Dynamics See All Weighing See All Automotive & Ground Transportation See All Calibration See All Installation, Maintenance & Repair See All Support Brüel & Kjær See All Release Notes See All Compliance
arrow_back_ios

Main Menu

See All nCode - Durability and Fatigue Analysis See All ReliaSoft - Reliability Analysis and Management See All API See All Experimental Testing See All Electroacoustics See All Noise Source Identification See All Environmental Noise See All Sound Power and Sound Pressure See All Noise Certification See All Industrial Process Control See All Machine Analysis and Diagnostics See All Structural Health Monitoring See All Electrical Devices Testing See All Electrical Systems Testing See All Grid Testing See All High-Voltage Testing See All Dynamic Weighing See All Vehicle Electrification See All Calibration Services for Transducers See All Calibration Services for Handheld Instruments See All Calibration Services for Instruments & DAQ See All On-Site Calibration See All Resources See All Software License Management See All Business Ethics

Wireless Data Acquisition Unleashed


Perfectly synchronized real-time noise measurements over large areas are simplified with independent, wireless Data Acquisition Modules. It's time to unleash absolute flexibility.

Brüel & Kjær LAN-XI Data Acquisition System is highly flexible due to its modularity. These individual modules can be collected or distributed at will, allowing diverse parts of an organisation to each use some modules, and then combine them for larger tests whenever necessary. 

Flight Certification
Flight Certification: Distributed acquisition stations transmit data by WiFi to a control room where PULSE Reflex software automatically merges the time-stamped datasets.

The GPS time stamping capability built into the LAN-XI system adds another string to its bow, giving a highly accurate time signal that allows modules to be distributed far and wide, and still achieve perfect sample synchronicity. This means testers can have several, completely detached acquisition stations that each record their data to the same absolute time, so the data can be seamlessly synchronized later.

The shared, absolute time base from the GPS satellites also allows sound and vibration data to be easily correlated with data from any other source with a GPS time stamp, like weather information or plane track data in the case of flyover noise certification. This also means that cross-spectral analysis can be performed between datasets collected on independent systems, in perfect sample-synchronicity. A case could be where data measured on a flying test aircraft can be easily matched to the external acoustic information perceived on the ground.

Critically, the GPS capability allows synchronization that it is wireless. To acquire sample-synchronous data on all acquisition front-ends, traditional data acquisition configuration required a cabled synchronization mechanism. However, it is cumbersome, and often impossible, to deploy a synchronization cable between front-ends.

Acquisition unleashed

LEARN MORE
LAN-XI DAQ FRAMES
AND
LAN-XI DAQ MODULES 

 









A rugged data acquisition station with battery module, built-in GPS receiver, and interchangeable input /output panels for different sensors and accessories.

With independent, synchronized data acquisition stations, a whole new world of flexibility is opened up. Unlimited by the impact of cable length on signal quality, the whole data acquisition system can span large distances – making it perfect for acoustic flyover research and certification tests. Here, the completely independent acquisition stations are like nodes in a virtual network. The only cables needed on the ground are the short transducer cables, so they don’t need to cross runways, and reduce the danger of damage – such as from lightning strikes. Structural analyses of large objects, like a Ground Vibration Test, are also vastly simplified.

With LAN-XI, the absence of wires connecting each acquisition station even includes power cables, because each acquisition station can include battery modules that power not only the hardware, but also any ancillaries such as the WiFi transmitter, a weather station, or a webcam.

Data merging takes place at a central station, and for very large distances this can take place via WiFi transmission. Yet such a system doesn’t depend on perfect WiFi connectivity, or even consistent connectivity. Because the data is independently recorded at each station, and the GPS timecode is stamped into the data, these independent data sets can be merged at any time, in a post-processing environment like PULSE / BK Connect. The system will normally perform this immediately (and automatically), but when that is not possible for connectivity reasons it will simply do it later, when the connection is re-established.

Test control is also centralized in a control room from where all of the independent acquisition stations are operated – wirelessly or not – and where personnel are safe from loud noise events like sonic booms. Here, testers can start and stop measurements, and even live stream some channels to monitor actual measurements.

From this central station, the controller can remotely check the whole system. With a press of a single button, the automated calibration feature sends a signal out to every transducer in the network, to check all connections are working, and all microphones are calibrated properly. On large systems spread out over a wide area, this feature saves a huge amount of time on individually checking microphones.

The rock-steady, absolute time base provided by GPS also allows large systems to be paired, to overcome any data throughput issues. All data acquisition systems have a limit to the density of data they can handle, but by pairing completely separate systems (and then synchronizing the data), higher channel counts and bandwidths are easy to achieve.

With essentially two separate systems, data can still be harvested regardless of the factors that limit each independent system, such as computer processing capacity. Critically though, the data merging post-measurement is straightforward and automated in our data analysis software.