Skip to main content
Bosch semiconductors for Automotive

Safety systems

Safety

Sensors for safety systems

In restraint systems, Bosch MEMS sensors detect abrupt vehicle deceleration. This information is the essential input for triggering the release of the vehicle's airbags.

The sensor data are processed by the central airbag ECU, which activates adequate restraint systems according to the classification and severity of the accident.

The sensors can be installed in the ECU or as satellite sensors in the periphery of the vehicle (front, side and rear).

Sensing axes Range Output Package
Acceleration sensor
Sensing axes
Y
Range
±120/240/480 g
Output
PSI5, 10 bit or 14 bit
Package
SOIC8n
Acceleration sensor
Sensing axes
Z
Range
±120/240/480 g
Output
PSI5, 10 bit or 14 bit
Package
SOIC8n
Acceleration sensor
Sensing axes
X
Range
±240/480
Output
PSI5, 10 bit or 14 bit
Package
SOIC8n
Acceleration sensor
Sensing axes
X
Range
±120/240/480
Output
PSI5, 10 bit or 14 bit
Package
SOIC8n
Acceleration sensor
Sensing axes
X
Range
±120/240/480
Output
PSI5, 10 bit or 14 bit
Package
LGA SiP
Acceleration sensor
Sensing axes
Z
Range
±120/240/480
Output
PSI5, 10 bit or 14 bit
Package
LGA SiP
Acceleration sensor
Sensing axes
X
Range
±240/480
Output
PSI5, 10 bit or 14 bit
Package
LGA SiP
Acceleration sensor
Sensing axes
X,Z
Range
±128 (ax)
±32 (az)
Output
SafeSPI, 14 bit
Package
SOIC8n
Acceleration sensor
Sensing axes
X,Y
Range
±128
Output
SafeSPI, 14 bit
Package
SOIC8n
Acceleration sensor
Sensing axes
X,Y
Range
±120/240/480
Output
PSI5, 10 bit or 14 bit
Package
SOIC8n
Acceleration sensor
Sensing axes
X,Z
Range
±120/240/480
Output
PSI5, 10 bit or 14 bit
Package
SOIC8n
Acceleration sensor
Sensing axes
X,Y
Range
±240/480
Output
PSI5, 10 bit or 14 bit
Package
SOIC8n
Acceleration sensor
Sensing axes
X,Y
Range
±240
Output
SafeSPI
Package
SOIC8n
Acceleration sensor
Sensing axes
X,Y
Range
±30/60
Output
PSI5, 10 bit or 14 bit
Package
SOIC8n
Acceleration sensor
Sensing axes
X,Z
Range
±30/60
Output
PSI5, 10 bit or 14 bit
Package
SOIC8n
Acceleration sensor
Sensing axes
X,Y
Range
±30/60
Output
PSI5, 10 bit or 14 bit
Package
LGA SiP
Acceleration sensor
Sensing axes
X,Z
Range
±30/60
Output
PSI5, 10 bit or 14 bit
Package
LGA SiP
Acceleration sensor
Sensing axes
X,Y
Range
±120/240/480
Output
PSI5, 10 bit or 14 bit
Package
LGA SiP
Acceleration sensor
Sensing axes
X,Z
Range
±120/240/480
Output
PSI5, 10 bit or 14 bit
Package
LGA SiP
Acceleration sensor
Sensing axes
X,Y
Range
±240/480
Output
PSI5, 10 bit or 14 bit
Package
LGA SiP
Angular rate sensor
Sensing axes
X
Range
±300 °/s
Output
SafeSPI
Package
BGA64
Inertial sensor
Sensing axes
Ωx
az
Range
±300 °/s
±5 g
Output
SPI
Package
BGA64
Pressure sensor
Sensing axes
Range
45.5 – 110 kPa (enhanced: 140 kPa)
Output
PSI5 (V1.3 / V2.1), 10 bit or 16 bit
Package
LGA8 (solderless contacting only)
Pressure sensor
Sensing axes
Range
45.5 – 110 kPa (enhanced: 140 kPa)
Output
PSI5 (V1.3 / V2.1), 10 bit or 16 bit
Package
SOIC8

In vehicle dynamics control systems, Bosch MEMS sensors measure the vehicle rotation around the vertical axis and the lateral acceleration to determine the dynamic state of the vehicle. Our inertial sensors combine both functions in a single housing.

Product Range Output Package
Inertial sensor
Product Range
±300 °/s (Ωxz)
±6 g (axyz)
Output
SafeSPI
Package
BGA64
Inertial sensor
Product Range
±300 °/s (Ωz)
±6 g (axy)
Output
SafeSPI
Package
BGA64
Inertial sensor
Product Range
±300 °/s (Ωx)
±6 g (ayz)
Output
SafeSPI
Package
BGA64
Inertial sensor
Product Range
±300 °/s (Ωz)
±5 g (axy)
Output
SPI, PSI5, CAN
Package
BGA64
Inertial sensor
Product Range
±5 g (axy)0 °/s (Ωx)
±5 g (ayz)
Output
SPI, PSI5, CAN
Package
BGA64

In Europe, the US and China it is mandatory that vehicles are equipped with Tire Pressure Monitoring Systems (TPMS). The TPMS continuously monitors the wheels and warns the driver immediately if the tire pressure is out of tolerance. Low tire pressure can result in unsafe or inefficient driving conditions.

The Bosch tire pressure sensor is a state-of-the-art sensor module for a tire pressure monitoring system (TPMS) with a Bluetooth interface.

Product Range Output Package
TPMS module
Product Range
90 kPa to 920 kPa for PC
90 kPa to 1,500 kPa for CV
ax: -330 g to 330 g
az: -960 g to 960 g
Output
BLE V5.3
Package
DFN (4.5 x 3.5 mm²)