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DATA ACQUISITION


DAQ Goes Mobile with Voyager


6-channel voyager data acquisition instrument enables portable, hand-held Noise, Vibration and Harshness (NVH) testing in the field in real time.


M


icroflown Technologies’ latest mobile data acquisition (DAQ) and vibro-acoustic device has been designed with the on-site noise, vibration and harshness


(NVH) testing industry in mind. Available from sound and vibration instrumentation and software specialist, AcSoft, the “Voyager” instrument can be used by engineers in-situ for the analysis of acoustic leakage as well as NVH in applications including the automotive and aerospace industries.


MULTIPLE FUNCTIONS According to AcSoft, the Voyager is a portable, handheld NVH testing system that merges multiple functional units such as data acquisition, signal conditioning and storage into a powerful tablet device for vibro-acoustic data recording, visualisation and analysis. Embedded touch controlled software offers the ability to run targeted vibro-acoustic analysis intuitively on the spot, monitor soundscapes and locate sound sources reliably with quick scans. The six-channel Voyager standard model enables NVH engineers to gain an acoustic impression of a sound event by listening to the sensor in real-time and offers filtering and spectrum visualisation alongside post-processing capabilities. It is a conventional measurement tool for a wide range of analysis of all data channels for extensive vibro-acoustic analysis. It offers a range of features including two dedicated channels to connect IEPE sensors, audio recording and playback, real-time IIR audio filtering on all channels, 1, 1/3 and 1/12 octave band analyser, spectrogram analysis for the study of transient noise, built-in camera and data storage and exporting.


ADVANCED MEASUREMENTS The Advanced version of the Voyager is a powerful portable measuring station with embedded processing and signal conditioning units. The device can be used autonomously or as a portable front end for its PC based VELO software.


❱ ❱ Using a range of probes and sensors, the Voyager is able to provide real-time in-situ analysis capabilities for NVH specialists in the automotive industry


It offers all the same features as the standard


Voyager but has plug and play compatibility with other Microflown products including Scan & Paint 2D and 3D, as well as additional vibro-acoustic data analysis options. The Voyager device’s intuitive 7-inch touchscreen


interface makes it easy to use for NVH experts and technicians. Configurable in seconds, the touch controlled interactive icons provide ready access to different modes and settings with users able to listen to the signal in real-time and switch to playback or analysis mode with just a single touch. According to Microflown, targeted analysis with the help of real-time filters on a data channel optimises the workflow and efficiency of the Voyager. The possibility of multi-channel extension up to 6 channels allows autonomous measurement with reference microphones or accelerometers to correlate and compare data measurements.


SENSORS & PROBES Compatibility with the Microflown range of sensors ensures a full capability to use all of the Microflown specific features of the Voyager alongside other products in the company’s range of NVH equipment. In terms of background noise cancellation and signal to noise ratio it can be used directly at the test location in the presence of ambient environmental sounds. In addition to the instrument, Microflown has also been focusing on targeted noise control engineering strategies to improve the build quality and customer perception of products. This focus has led Microflown Technologies to develop the new PU Voyager probe. Designed to withstand mechanical shocks, the all-purpose PU Voyager probe is ideal for on-site high precision sound source localisation, quality compliance tests and NVH troubleshooting. The plug-and-play capability of the Voyager enables is to be used with a wide range of devices. The tablet features ready to use USB 2.0, Micro-USB, Ethernet and BNC connections as well as sensor input channels and a headphone jack.


DAQ, Sensors & Instrumentation Vol 3 No. 1 /// 5


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