Mobility Solutions

Combined inertial sensor for automotive applications Bosch SMI130 sensor measures acceleration and yaw rate in three dimensions Simple to calibrate, flexible design

  • Acceleration and yaw rate sensor with six sensing axes
  • AEC-Q100 qualified for automotive applications
  • Wide range of setting options in an ultra-compact package
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  • November 08, 2013
  • Mobility Solutions
  • Press releases
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press release

Bosch has announced the launch of a new sensor which offers six degrees of freedom (6DoF) by measuring acceleration in all three spatial dimensions and yaw rates around all axes. The SMI130 is designed for non-safety-critical applications in the automotive industry, including in-dash navigation and telematics systems such as toll, eCall, and alarm systems.

For users of navigation devices, the new Bosch combined inertial sensor offers two different benefits. First, it assists in situations where no GPS signal is available, such as tunnels, deep urban canyons, and off-road terrain. In combination with the vehicle’s indicated speed, the sensor’s yaw rate signal provides the data required to determine the exact position of the vehicle according to the principle of dead reckoning. Second, navigation systems can use the acceleration signal to determine whether the vehicle is moving up or down and can use this information to derive its vertical position. This enables the system to identify the correct level in places where multiple roads are overlapping.

One type of sensor for all types of applications
For manufacturers of navigation systems, the 2 x 3 sensing axes provided in the SMI130 offer a crucial advantage, enabling correction of the GPS signal regardless of where the navigation device is installed. This innovative solution means that only one type of sensor is required for all applications, instead of multiple single-axis yaw rate sensors aligned differently according to the orientation and position of the navigation device. Other applications that use information on vehicle movement can also benefit from the 6DoF sensor. The SMI130 also makes it possible to identify the vehicle’s location more accurately in telematics and toll systems, regardless of where it is installed.

Technical features of the SMI130
Where required, the measurement range of the yaw rate sensor can be adjusted in up to five steps between ±125°/s and ±2000°/s; the acceleration sensor offers four different measurement ranges between ±2g and ±16g. The yaw rate signal offers a resolution of 16 bit and the acceleration signal has a resolution of 12 bit. A temperature signal is also available. Further features include adjustable filter bandwidths and built-in self-testing capabilities. Taken together, these features offer a significant degree of design flexibility. The SMI130 is supplied in a compact LGA housing that measures just 3.0 x 4.5 x 0.95 mm, and is AEC-Q100 qualified for automotive applications.

Samples of the new SMI130 are already available.

Background to MEMS technology
Bosch has been at the forefront of MEMS (microelectromechanical systems) technology since the very beginning. Since the start of production in 1995, the company has manufactured well in excess of three billion MEMS sensors, with production volumes hitting new highs year after year. In 2012, some 600 million sensors rolled off the production lines at the company's high-tech wafer fab in Reutlingen – or 2.4 million each working day. Bosch supplies sensors for a wide range of applications in the consumer electronics and automotive industries. These sensors measure pressure, acceleration, rotary motion, mass flow, and the earth’s magnetic field. More information on Bosch sensors for automotive applications is available online at www.bosch-sensors.com.

Readers’ contact:
Bernhard Prien
Phone +49 7121 35-6651

Mobility Solutions is the largest Bosch Group business sector. In 2015, its sales came to 41.7 billion euros, or 59 percent of total group sales. This makes the Bosch Group one of the leading automotive suppliers. The Mobility Solutions business sector combines the group’s expertise in three mobility domains – automation, electrification, and connectivity – and offers its customers integrated mobility solutions. Its main areas of activity are injection technology and powertrain peripherals for internal-combustion engines, diverse solutions for powertrain electrification, vehicle safety systems, driver-assistance and automated functions, technology for user-friendly infotainment as well as vehicle-to-vehicle and vehicle-to-infrastructure communication, repair-shop concepts, and technology and services for the automotive aftermarket. Bosch is synonymous with important automotive innovations, such as electronic engine management, the ESP anti-skid system, and common-rail diesel technology.

The Bosch Group is a leading global supplier of technology and services. It employs roughly 375,000 associates worldwide (as of December 31, 2015). The company generated sales of 70.6 billion euros in 2015. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiaries and regional companies in some 60 countries. Including sales and service partners, Bosch’s global manufacturing and sales network covers some 150 countries. The basis for the company’s future growth is its innovative strength. Bosch employs 55,800 associates in research and development at 118 locations across the globe. The Bosch Group’s strategic objective is to deliver innovations for a connected life. 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.”

Further information is available online at www.bosch.com and www.bosch-press.com, http://twitter.com/BoschPresse.

PI8379 - November 08, 2013

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