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Using PXI to Build a High-Performance MEMS Microphone Testing System

The demand for increasing microphone signal quality from handheld mobile devices has led to the development of microphone signal processing technologies such as: HD audio, noise cancellation, active noise cancellation, beam forming, directional reception, stereo sound field reconstruction, and speech recognition. As well, devices incorporating multiple microphones are becoming more and more popular. Several newly released smart phones now integrate multiple MEMS (Micro Electrical-Mechanical System) microphones for improved background noise cancellation. All flagship smart phone models in introduced in 2015 featured three or more MEMS microphones to support HD audio, ambient noise cancellation, noise filtering, directional reception and speech recognition. Popularity of MEMS microphones is expected to grow.

Posted in: White Papers, Electronics, Data Acquisition, Sensors, Test & Measurement

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Making Sense from Sensors: How to Build a Sensor Fusion Engine

The presence of more than 1 billion sensor-rich smartphones and the intense interest surrounding the Internet of Things has drawn wide attention to all the potential and possibilities of sensor fusion engines. Availability of context data and general real-world data in digital format opens up many opportunities.

Posted in: Articles, Sensors

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Microcontrollers

Toshiba America Electronic Components (San Jose, CA) has released a group of 30 microcontrollers (MCUs) based on the ARM® Cortex®-M3 core. The M3H MCUs are fabricated with an embedded flash memory process. Target applications include motor control, consumer electronics, office automation equipment, and housing and facility equipment.

Posted in: Products, Manufacturing & Prototyping, Sensors

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Multimeter

Fluke (Everett, WA) has announced the 279 FC TRMS Thermal Multimeter. The test tool integrates a digital multimeter (DMM) with a thermal camera. Using the 279 FC imager, technicians can check for hot spots in fuses, wires, insulators, connectors, splices, and switches; the DMM troubleshoots and analyzes issues.

Posted in: Products, Manufacturing & Prototyping, Sensors

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Pyrometer

The IGA 140/23 pyrometer from LumaSense Technologies (Santa Clara, CA) offers non-contact temperature measurement on metals, ceramics, and graphite. The device, equipped with RS232 and RS485 serial interfaces, reads parameters via the provided InfraWin PC software. Parameters can also be changed via PC. Communication options include RS232, RS485, ProfiBus, ProfiNet, and Ethernet. Temperature detection ranges between 50 and 1800 °C. For Free Info Visit http://info.hotims.com/61062-143

Posted in: Products, Manufacturing & Prototyping, Sensors

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Sensor ICs

Allegro MicroSystems (Worcester, MA) offers two new current sensor ICs for AC or DC current sensing. Both the ACS724KMA (5 V) and the ACS725KMA (3.3 V) are set in a high-isolation SOIC16 wide-body surface mount package that provides reinforced isolation. The differential sensing technology protects against interfering common-mode magnetic fields from adjacent current traces or motors. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection.

Posted in: Products, Manufacturing & Prototyping, Sensors

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IC and Module

An IC and module from Sendyne (New York, NY) performs ground fault detection and isolation monitoring while simultaneously measuring current, voltage, and temperature. The AEC-Q100-qualified SFPGFD adheres to international standards and regulations for isolation monitoring in plug-in electric vehicles (xEVs).

Posted in: Products, Manufacturing & Prototyping, Sensors

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