New Bosch MEMS sensor ensures uninterrupted navigation

Sensor has capabilities to trigger vehicle's automatic eCall emergency system

New Bosch MEMS sensor ensures uninterrupted navigation

Bosch has launched a new MEMS sensor: the SMI230.

This highly precise sensor constantly registers changes in the vehicle’s directionand speed, evaluates the information, and transmits it to the navigation system.

There, the information is combined with the positional data from the global navigation satellite system (GNSS) and used for navigation.

A sudden interruption in the GPS signal – perhaps due to a tunnel or urban canyon – causes the new Bosch sensor to step in.

“When the navigation system is at a loss, Bosch semiconductor sensors ensure that the car doesn’t lose its way,” says Jens Fabrowsky, member of the executive management of Bosch’s automotive electronics division.

Thanks to the combination of GPS position and sensor information, the navigation arrow on the display no longer makes unrealistic jumps or suddenly changes orientation on its path from waypoint to waypoint.

Semiconductors

“Semiconductors are key to modern-day mobility, and it is impossible to imagine cars today without them,” Fabrowsky says.

Bosch recently started production of the SMI230, and the first customers are already receiving the sensor as standard equipment.

Sensor technology in the form of a chip – this is the secret to keeping the movement of the arrow fluid across the navigation map.

Experts refer to these kinds of sensors as microelectromechanical systems, or MEMS sensors.

To generate high-precision data on vehicle motion, Bosch puts together two of these tiny, extremely sensitive sensors – one for the vehicle’s acceleration, the other for its yaw rate – in a single housing.

The strength of the SMI230 lies in this combination.

In addition, the sensor duo achieves an extraordinary degree of precision and can detect changes in the vehicle’s motion unusually quickly.

“Bosch has comprehensive expertise, unrivaled worldwide, in developing and manufacturing semiconductors for automotive applications.

“That helps us to both develop new automotive functions and steadily improve the chips themselves,” Fabrowsky says.

Bosch semiconductor chips are primarily used as sensors for safety and driver assistance systems, but also in multimedia and connectivity applications as well as in conventional and electrified powertrains.

The capabilities of Bosch’s SMI230 MEMS sensor not only improve navigation, they also make it ideal for use in fleet management and toll systems, as these areas also require precise motion detectors.

Furthermore, the sensor is suited for use in vehicle alarm systems because of its ability to detect vibrations and impacts.

If there is an accident – detectable through extremely negative acceleration values or enormous rotational motion – the sensor data can still trigger the automatic eCall emergency call system.

For further information about Bosch aftermarket, select ‘more details’ below.

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