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Murata has developed a high-performance 6-axis inertial sensor "SCH1633-D01" for automotive applications (hereinafter referred to as the "Product"). Samples are already being provided and mass production is planned to begin in the first half of 2025. In the future, Murata plans to expand the product lineup of its next generation 6-axis SCH1000 series, including this product.

In recent years, the automotive industry has continuously introduced AD (Autonomous driving) /ADAS (Advanced Driver Assistance System) and so on, striving to make driving safer and more comfortable, which also needs to collaborate with GNSS for higher accuracy of their own position estimation. In order to achieve more advanced AD/ADAS, the time mismatch problem between GNSS, inertial sensor, camera/Lidar/MMwave radar information needs to be solved, so the inertial sensor also needs to have a time synchronization function.

In addition, the UNECE headlight leveling regulations are scheduled to be implemented in 2027, and automakers will need to add high-precision sensors to vehicles to meet the regulations, which will also increase manufacturing costs. Therefore, a high-precision sensor that can be used simultaneously for AD/ADAS, vehicle attitude measurement, and headlight leveling is needed to optimize the overall vehicle cost.

Murata has developed the "SCH1633-D01", a high-precision 6-axis inertial sensor for automobiles with time synchronization, using 3D MEMS and system design technology accumulated over many years. This product can provide inertial signals needed for self-position estimation, vehicle attitude measurement, camera/LiDAR/radar tilt detection, etc. after combining GNSS. It provides a high-quality signal for these functions and contributes to the overall cost optimization of the vehicle.

In addition, by combining this product with algorithms, it will help to comply with UNECE's headlight levelling regulations. In the road test conducted in California, more than 90 percent of the autonomous driving miles were driven using Murata's existing 6DoF MEMS sensor (SCHA600 series). This product was developed based on customer feedback during these road tests.

In the future, Murata will continue to focus on the development of inertial sensors that meet the needs of the market and help automotive sensors achieve miniaturization and high precision.

Murata's partner Hexagon * has incorporated this product into their navigation and positioning products. "The SCH1633-D01 demonstrates excellent performance as a MEMS sensor and we are proud to bring it to market as part of our product portfolio," said Gordon Heidinger, Division Manager, Autonomous Driving and Positioning, Automotive and Critical Safety Systems.

Hexagon improves efficiency, productivity, quality and safety in multiple areas through advanced sensors, software and autonomous technologies.

Mr. Ville Nurmiainen, General Manager, Product Management, Murata Electronics Oy, said: "Automotive 6DoF applications are growing rapidly and competition among manufacturers for market share is fierce. This product provides the high performance required for new systems and helps to reduce costs to a large extent. For automobile manufacturers, this product can provide technical advantages and cost savings. Help further advance automotive applications and make autonomous driving safer for all of us."

Main advantages:

1. Industry-leading excellent performance level

The gyroscope Allen variance (lowest value) is 0.5deg/h or less

Gyroscope Angle random walk within 0.05 deg/ √ 𝐻𝑧

Linearity 0.02dps(gyroscope)0.06m/s^2 (acceleration) Full temperature range

2. Built-in gyroscope and accelerometer orthogonal error compensation

The orthogonality error value is 0.3deg or less over the whole temperature range

3. Supports multiple system-level time synchronization functions

4. It is the smallest of Murata's current 6-axis products: 12mm x 14mm x 3mm

Main uses:

Inertial navigation, control attitude/camera/headlight for AD/ADAS

More information is available at www.murata.com

Company website: www.hkmjd.com