High-precision inertial navigation solution for smart cockpits based on ST ASM330LHH MEMS Sensor series-EEWORLD

Collect

With the development of assisted driving and unmanned driving, inertial navigation has become an indispensable technical requirement. Under densely populated high-rise buildings, complex elevated roads, and long underground tunnels in cities, GPS signals cannot provide navigation services due to obstruction and interference. At this time, high-precision inertial navigation can well make up for the lack of GPS signal loss and ensure normal navigation.

The core of the inertial navigation IMU is the inertial sensor. When the inertial navigation IMU is installed on the vehicle, it can calculate the displacement and azimuth of the vehicle by measuring the acceleration and angular velocity of the vehicle's movement. It can fill the gap of GPS signal loss, provide high-precision positioning for the vehicle, and ensure the safety of vehicle driving.

ST's automotive-grade six-axis inertial sensor ASM330LHH series provides ultra-high-resolution motion tracking functions for advanced in-vehicle navigation and information service systems. The ASM330LHH series can meet the continuity and accuracy requirements of inertial navigation for vehicle positioning.

When the satellite signal is blocked, the ASM330LHH series can provide sensor data for advanced dead reckoning algorithms to calculate the precise position of the car. The ASM330LHH series’ advanced low-noise, temperature-stable design enables reliable telematics services and meets the demands of advanced autonomous driving systems.

►Scenario application diagram

► Display board photos

►Solution Block Diagram

►Core technology advantages

● ASM330LHH series is the reference design of Qualcomm MSM8225 smart cockpit platform, and is also shipped with domestic smart cockpit platforms such as Jiefa, Xinchi, and Spreadtrum ● Assist customers with Apple Carplay, Google Android Auto certification road test experience ● AEC-Q100 standard ● ASM330LHB series supports machine learning and functional safety B ● -40 °C to +125 °C temperature range ● Series products to meet customers' different technical requirements ◆ ASM330LHH : AEC-Q100 up to 105°C ◆ ASM330LHHX : AEC-Q100 up to 105°C With low power mode, Embedded MLC and FSM ◆ ASM330LHB : AEC-Q100 up to 105°C With low power mode, Embedded MLC and FSM, With ASIL-B library ◆ ASM330LHBG1 : AEC-Q100 up to 125°C With low power mode, Embedded MLC and FSM, With ASIL-B library

►Solution Specifications

● AEC-Q100 qualified● Extended temperature range: -40 °C to +125 °C ● Embedded compensation mechanism ensures excellent stability over the entire temperature range● User-selectable full-scale range of the accelerometer up to ±16 g ● Extended gyroscope range from ±125 to ±4000 dps ● SPI and I²C host serial interfaces● Six-channel synchronous output for improved dead reckoning accuracy● Intelligent programmable interrupts● Embedded 3 KB FIFO can be used to offload the host processor● ECOPACK, RoHS and “Green” compliant ◆ ASM330LHH : AEC-Q100 up to 105°C ◆ ASM330LHHX : AEC-Q100 up to 105°C With low power mode, Embedded MLC and FSM ◆ ASM330LHB : AEC-Q100 up to 105°C With low power mode, Embedded MLC and FSM, With ASIL-B library ◆ ASM330LHBG1 : AEC-Q100 up to 125°C With low power mode, Embedded MLC and FSM, With ASIL-B library

Keywords：ST Reference address：High-precision inertial navigation solution for smart cockpits based on ST ASM330LHH MEMS Sensor series

Previous article：Development of stator winding technology for new energy vehicle drive motors
Next article：An article explains the basics of smart car domain controllers

Popular Resources
Popular amplifiers