MEMS Sensor to Support Accurate Positioning and Control for Cars

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Advanced inertial sensor provides high accurate dead reckoning for automotive navigation, telematics, and highly automated driving systems

STMicroelectronics has introduced the automotive-grade ASM330LHH six-axis inertial sensor for high-resolution motion tracking in advanced vehicle navigation and telematics applications. The sensors serves demands for continuous, accurate vehicle location to support automated services.

Precise positioning

The ASM330LHH lets advanced dead-reckoning algorithms calculate precise position from sensor data if satellite signals are blocked. This often happens in urban canyons, tunnels, covered roadways, parking garages, or dense forests.

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Its advanced, low-noise, temperature-stable design enables dependable telematics services such as e-tolling, tele-diagnostics, and e-Call assistance. Precision inertial data in six axes also meets the needs of advanced automated-driving systems.

Prefered choice and full end-to-end control

Magneti Marelli has selected the ASM330LHH for advanced telematics systems, to be fitted as original equipment by global automotive groups in upcoming vehicle ranges.

For the ASM330LHH, as with all its MEMS sensors, ST owns the entire manufacturing process, from designing the sensors, through wafer fabrication, packaging, test, calibration, and supply. Full end-to-end control enables ST to create appropriate performing sensors and assure customers of a robust and responsive supply chain, with rigorous end-of-line quality screening.

Temperature and power range

Temperature range up to 105°C giving designers extra freedom to locate electronic controls in hot areas such as in smart antennas on the vehicle roof, or near the engine compartment;

Ultra low noise allows greater measurement resolution by minimizing integration errors when positioning is reliant on sensors only.

High linearity and built-in temperature compensation eliminate any need for external compensation algorithms over its operating range;

Low power consumption, with features for optimizing power management if battery usage becomes crucial.

Built on ST’s proprietary ThELMA[2] MEMS process technology, which enables integration of both the 3-axis accelerometer and 3-axis angular-rate sensor (gyroscope) on the same silicon for optimum yield, quality, and reliability

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