NewsSTMicroelectronics ASM330LHB: A Versatile Inertial-Sensing Module for Automotive Applications with Functional-Safety Capabilities...

STMicroelectronics ASM330LHB: A Versatile Inertial-Sensing Module for Automotive Applications with Functional-Safety Capabilities up to ASIL B1

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STMicroelectronics’ ASM330LHB automotive-grade MEMS inertial sensing module provides accurate measurements for various automobile functions. In addition, its own software that supports functional safety applications that are up to ASIL B1.
Inertial-sensing modules are one of the types of sensors specifically designed to measure the acceleration, angular velocity as well as other parameters related to motion of objects. It is typically composed of accelerometers and gyroscopes which work together to provide precise and accurate measurement of the object’s movement and direction, it is often utilized in robotics, automotive systems, drones, and wearable gadgets – among others.

The module is equipped with a 3-axis digital accelerometer as well as a 3-axis digital gyroscope, designed for long-term road usage and features synchronized output on six channels. High-quality inertial measurements are used to enhance the accuracy of car positioning within the context. This is able to support ADAS/V2X communications aid in stabilizing radar, lidar, and visual cameras; aid semi-autonomous driving apps until L2+ levels, and also enable a variety of functions within the car body.

Vehicle-to-everything (V2X) communication refers to the exchange of information between a vehicle and various entities within its environment – including other vehicles, infrastructure, pedestrians and even the cloud. V2X communication makes use of various wireless technologies, such as Wi-Fi networks, cell networks, and dedicated short-range communications (DSRC) to allow the exchange of information in real time between cars and environment. V2X communications provide drivers with information about traffic conditions, road conditions weather conditions, traffic patterns, and other factors that affect the safety of driving and efficiency. V2X technology is considered to be essential to the development of advanced driver-assist systems (ADAS) which will lead to fully autonomous vehicles being a reality in the near future.

With its software-driven engine, the ASM330LHB gives support for systems in the automotive industry that require safety integrity as high as level B. By using two ASM330LHB sensor modules to provide redundant data this combination provides accurate and reliable data on driver assistance systems like lane-centering and brake emergency, cruise assist and semi-automated driving. TUV SUD has independently certified that our ASIL B compatible software library is in compliance with the standards for automotive functional safety ISO 26262. With the use of specific safety measures including accuracy and integrity checks for data The ASM330LHB library guarantees conformance with ASIL B automotive systems for more secure driving and a better quality of life. Alongside offering safer transport options and flexibility, it also offers more opportunities to make smarter options. Integral intelligence allows the addition of new services that give details about the status of cars while the driver is absent. Utilizing the embedded Machine Learning Core (MLC) which draws only microamperes at a time machines, machine-learning algorithms detects events such as attempts at theft and jacking up, or towing or impact from other vehicles.

Machine Learning Cores (MLCs) are hardware components created to accelerate the machine-learning algorithms. MLCs are usually included in larger systems like sensors or microcontrollers to enable efficient and cost-effectively execute machines learning algorithms.

STMicroelectronics ASM330LHB module makes use of its embedded MLC to recognize attempts at theft, jacking-up and towing actions against other vehicles, or even incidents from other sources. With a low power consumption and the superior processing capabilities from its integrated MLC chip, the ASM330LHB module can perform these tasks without affecting on system performance and the power consumption.

By analyzing threshold combinations, the built-in finite State Machine (FSM) can be designed to recognize the moment a vehicle is moving or stationary, and can detect any unstable or vibrations. Accelerometer and Gyroscopes in the module show excellent stability over temperature and time with very low noise generation Their bias instability over time was 3deg/hour! Utilizing operating modes that permit designers to modify data update rates and the power consumption. The ASM330LHB has this extended temperature range.

Michal Pukala
Electronics and Telecommunications engineer with Electro-energetics Master degree graduation. Lightning designer experienced engineer. Currently working in IT industry.