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Press release #Smart Home

Making a splash: Bosch launches a robust barometric pressure sensor

  • Robust package design offers high level of protection against the ingression of water and other contaminants
  • Smallest package of any comparable barometric pressure sensor, making it easy to design into wearables and other portable products
  • Excellent performance, accuracy and reliability over the sensor's lifetime
Tim Wieland

Tim Wieland >

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Wearable fitness trackers are rapidly growing in popularity. A barometric pressure sensor enables the wearable to detect changes in the user’s elevation, for example when walking up or down stairs, for calculating the number of calories that the user is burning. Until now, many barometric pressure sensors have not been resistant against liquids and thus it has been challenging to integrate them into waterproof products. To address this issue, Bosch Sensortec developed the BMP384, a robust barometric pressure sensor delivering marketleading accuracy in a compact package.

The high performance and low power consumption of the BMP384 makes it ideal for wearables, home appliances and industrial applications in harsh environments. The new sensor's innovative package design utilizes a special gel to protect it against the ingression of mainly water, but also to other liquids and dust in combination with the required integration concept. It is now straightforward for OEMs to integrate a barometric sensor into products requiring high robustness.

"Bosch has applied its many years of experience in creating reliable sensors for harsh environments into the design of the BMP384," says Dr. Stefan Finkbeiner, CEO at Bosch Sensortec. "Until now, engineers have faced significant challenges when designing barometric pressure sensors into applications involving water or other contaminants, frequently seeing performance degradation over the final product's lifetime. This new sensor makes design simpler and provides peace of mind."

The new BMP384 barometric pressure sensor is ideally suited for wearables like smartwatches and fitness trackers in activities like swimming and running. The special gel inside the package provides protection against common liquids such as salt water, rain, sweat and sunscreen. Its compact size of just 2.0 x 2.0 x 1mm3 enables seamless integration even into extremely small devices.

In addition to wearables, the sensor will be valuable in home appliances, for example water level detection in washing machines for ensuring accurate water volume measurement and flooding prevention. The BMP384 is very durable, making it ideal for dusty environments in use cases such as clog detection in vacuum cleaners.

Despite its ruggedness, the BMP384 does not compromise on performance. It provides a relative accuracy of +/- 9 Pa, an absolute accuracy of +/- 50 Pa, and a temperature coefficient offset (TCO) of +/- 1.0 Pa/K. Importantly, with a power consumption of just 3.2mA at 1Hz data rate (typical), the sensor will not drain the batteries of portable devices.

Tim Wieland
Phone: +1 248-876-7708
Tim.Wieland@us.bosch.com

Bosch Sensortec GmbH is a fully owned subsidiary of Robert Bosch GmbH that is dedicated to delivering a complete portfolio of microelectromechanical systems (MEMS) sensors and solutions that enable consumer electronics to be connected. Bosch Sensortec develops and markets a wide portfolio of MEMS sensors and solutions tailored for smartphones, tablets, wearable devices and IoT (Internet of Things) applications.

The product portfolio includes 3-axis acceleration, gyroscope and geomagnetic sensors, integrated 6- and 9-axis sensors, environmental sensors, and a comprehensive software portfolio. Since its foundation in 2005, Bosch Sensortec has emerged as the MEMS technology leader in the markets it addresses. Bosch has been both a pioneer and a global market leader in the MEMS sensor segment since 1995 and has, to date, sold more than 7 billion MEMS sensors. Bosch sensors can be found in three out of four smartphones worldwide.

For more information, go to www.bosch-sensortec.com, twitter.com/boschMEMS.

Having established a regional presence in 1906 in North America, the Bosch Group employs 34,700 associates in more than 100 locations, as of December 31, 2020. According to preliminary figures, Bosch generated consolidated sales of $13.1 billion in the U.S., Canada and Mexico. For more information, visit www.bosch.us, www.bosch.ca and www.bosch.com.mx.

The Bosch Group is a leading global supplier of technology and services. It employs roughly 394,500 associates worldwide (as of December 31, 2020). According to preliminary figures, the company generated sales of $87.1 billion in 2020. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. As a leading IoT provider, Bosch offers innovative solutions for smart homes, Industry 4.0, and connected mobility. Bosch is pursuing a vision of mobility that is sustainable, safe, and exciting. It uses its expertise in sensor technology, software, and services, as well as its own IoT cloud, to offer its customers connected, cross-domain solutions from a single source. The Bosch Group’s strategic objective is to facilitate connected living with products and solutions that either contain artificial intelligence (AI) or have been developed or manufactured with its help. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.” The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiary and regional companies in 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. The basis for the company’s future growth is its innovative strength. At 126 locations across the globe, Bosch employs some 73,000 associates in research and development, as well as roughly 30,000 software engineers.

Additional information is available online at www.bosch.us, www.iot.bosch.com, https://us.bosch-press.com, https://twitter.com/BoschPress

Exchange rate: 1 EUR = 1.2171

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