Knowles mass producing MEMS microphones

Knowles Acoustics (formerly Emkay Innovative Products), a division of Knowles Electronics are now mass producing a surface mounted microphone called the SiSonic, that uses MEMS technology.

Note that Knowles also produce a small condenser microphone (2.5×2.5mm).

Brick with embedded sensors

Researchers at the University of Illinois at Urbana-Champaign have developed a prototype brick that contains a thermistor, two-axis accelerometer, multiplexer, transmitter, antenna and battery. The brick could be used to monitor the ‘health’ of the building such as temperatures, or vibration.

Read the media release on the UIUC web site.

LabView 7 Express released

National Instruments have released LabVIEW 7 Express, which is the culmination of 4 years of effort. The software can be compiled for a range of targets including Palm OS, and Microsoft PocketPC PDAs.

Read more on the National Instruments web site.

Infrasound concert

A pianist GéNIA from the Ukraine will perform at the Purcell Room in London, several pieces from composers such as Philip Glass and Arvo Pärt during which researchers from the National Physical Laboratory will generate infrasound at a frequency of 17Hz from a loudspeaker attached to a 7m (23ft) length of sewer pipe. The audience will be asked to complete a questionnaire on mood and emotion, designed by the psychologists Ciaran O’Keeffe and Richard Wiseman of Hertfordshire University, both before and after listening to each piece of music. The results will be analysed to determine whether and how the vibrations have an effect.

“Infrasonic” concerts on Saturday, May 31, 3pm and 5pm, Purcell Room. Tickets are available from the Royal Festival Hall.

European sensor manufacturers join NI TEDS program

Several European manufacturers of acoustic and vibration sensors have joined with National Instruments to develop sensors that comply with the IEEE P1451.4 standard. The standard proposes that sensors add an embedded, low-cost memory chip containing a standardized transducer electronic data sheet (TEDS) that stores important sensor information and scaling parameters for self-identification and self-description. TEDS eliminate the need to manually input this data when configuring a measurement system. The manufacturers include: Bruel & Kjaer, G.R.A.S. Sound & Vibration, Kistler, LEM, RDP Electronics, Sensorex, WayCon Positionsmesstechnik. Other members include: Celesco, Endevco, Lebow, Lion Precision, Macro Sensors, Measurement Specialties, PCB Piezotronics, Honeywell Sensotec, Transducer Techniques, Watlow, Weed Instrument and Wilcoxon.

Read the press release on the National Instruments web site.