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TMCNet:  Omron to Debut MEMS Absolute Pressure Sensor

[July 09, 2012]

Omron to Debut MEMS Absolute Pressure Sensor

Jul 10, 2012 (Close-Up Media via COMTEX) -- Omron Corp. announced the release in January 2013, of an absolute pressure sensor capable of accurately detecting 50cm altitudinal variations through highly precise sensing of air pressure fluctuation.

By fully exploiting the latest MEMS technology, one of Omron's core competencies, the company has developed an absolute pressure meter that, despite its subminiature dimensions, is among the world's most accurate and power efficient.

According to the company, through the integration of CMOS circuits and MEMS sensors, Omron has been able to create an absolute pressure sensor measuring only 3.8mm*3.8mm*0.92mm, making it suitable for installation in small mobile devices and other compact hardware. The sensor's power efficiency also makes it well-suited for use in battery-operated applications such as smartphones and activity monitors. Installing the pressure sensors in activity monitors will make it possible to take into account the altitudinal variation involved in one's daily activities and exercise such as climbing up and down stairs or hills, etc. Installing the sensors in car navigation systems will make it possible, for example, to provide accurate navigation guidance inside multistory car parks and also enable such systems to distinguish between elevated roadways and the ground-level roads beneath them. The sensors can also be used in building security applications to detect fluctuations in air pressure due to, for example, a door opening or a window breaking.Omron also plans to release integrated CMOS-MEMS wafers to make it possible to install other sensors on the same board as the absolute pressure sensor.

Omron will be exhibiting its new MEMS absolute pressure sensor at the Micromachine/MEMS ROBOTECH 2012 exhibition at Tokyo Big Sight from July 11 (Wed) to July 13 (Fri).

As described by the company, the features include: 1. Subminiature dimensions (3.8mm*3.8mm*0.92mm). 2. Thanks to integration of CMOS circuitry and MEMS sensors, chip size is only 1.9mm*1.9mm*0.5mm. 3. Wide detection range of 300hPa to 1100hPa. 4. Able to accurately detect the relative difference of approximately 6pa in air pressure that exists between 50cm variations in altitude. 5. Low current consumption of 0.5uA to 9.5uA: suitable for use in battery-operated devices (current consumption levels are dependent on measurement conditions and operating modes). 6. A built-in temperature sensor can be used to adjust measurements to compensate for air pressure fluctuation due to changes in air temperature. 7. I2C output, serial communications compatible.

Omron Corp. is a global company in the field of automation.

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