村田製作所：6軸･3D MEMS慣性力センサー’SCHA600’：ASIL･レベルD対応（動画）：
SCHA600 6-DOF XYZ-Axis Gyroscope & XYZ-Axis Accelerometer with Digital SPI Interface：
带数字SPI接口的SCHA600 6自由度XYZ轴陀螺仪和XYZ轴加速度计
村田製作所
5月28日、6軸ワンパッケージ、3D MEMS慣性力センサー「SCHA600シリーズ」を発表しました。
ASIL（Automotive Safety Integrity Level＝自動車安全水準）で、もっとも高いレベル/安全方策レベル「D」に対応します。
2020年12月末、量産開始の予定。
Automotive Safety Integrity Level：レベル「D」
近年、自動車業界では、ADASの高精度化が進んでいます。
衛星測位システム（GNSS）は、トンネル内や橋梁下の走行状況を、計測出来ません。
そこで、トンネル内や橋梁下での正確な車両位置を検知するセンサー技術を求められています。
SCHA600シリーズ：
シリコンを、3次元構造に成形しました。
- 優れたセンサー精度、
- 小型のユニットサイズ、
- 低消費電力を実現、
独自の静電容量型3D MEMS（3次元・マイクロ・エレクトロ・メカニカル・システム）テクノロジーを活用。
誤差数十cmレベルの測位を可能とし、先進運転支援システムや自動運転など、各システムの高精度化に貢献する。
より高性能なセンサー：
主に環境要件が厳しく、より高性能なセンサーが求められています。
- 「先進運転支援システム（ADAS）」
- 「自動運転（AD）」
- 「レーンキーピングアシスト（LKA）」
- 「デッドレコニング」
上記機能をターゲットに、開発されました。
Car Watch
https://car.watch.impress.co.jp/docs/news/1255317.html
SCHA600 6-DOF XYZ-Axis Gyroscope & XYZ-Axis Accelerometer with Digital SPI Interface
Murata
has developed a new MEMS (Micro-Electro-Mechanical Systems) 6DoF (Six Degrees of Freedom) inertial sensor that realizes high performance for safety-critical automotive applications.
The sensor enables new ADAS (Advanced Driver-Assistance Systems) functionality and AD (Automated Driving) through data fusion with GNSS (Global Navigation Satellite System) and various perception sensors such as camera, radar and lidar.
The product
delivers the best performance available for automotive applications in regard to bias stability and noise.
The orthogonality of the measurement axes
is calibrated at Murata, allowing system integrators to skip this costly and performance-critical process step.
This new sensor
is a single package 6DoF component to be integrated with GNSS and perception sensors for L2+ and higher levels of autonomy.
The new sensor
enables centimeter-level accuracy in regard to vehicle dynamics and position, enabling safe, robust and verified autonomous driving.
Extensive attention
has been given to guarantee operation during high mechanical shock and vibration.
The product
is qualified according to the AEC-Q100 standard, includes several advanced self-diagnostic features and is fully ASIL-D (Automotive Safety Integrity Level) compliant.
Murata has more than 20 years of experience of providing inertial sensors for safety critical automotive applications like ESC.
This expertise
has been utilized for the development of the SCHA600 sensor. SCHA600 series features extensive failsafe functions and error bits for diagnostics.
These include internal reference signal monitoring, checksum techniques for verifying communication, and signal saturation/over range detection.
The unique diagnostic feature of Murata’s 3-axis accelerometer
is the continuously operating self-test function, which monitors the sensor during measurement.
This patented self-test function
verifies the proper operation of the entire signal chain from MEMS sensor movement to signal conditioning circuitry for every measurement cycle.
Product Features:
Single package 6DOF component for safety critical and AD applications
ISO26262 compliant for systems up to ASIL D
Component-level dynamic cross-axis calibration enables better than 0.3° cross axis error over temperature
- Allan variance down to 0.9 °/h at room temperature
- Gyro RMS noise level below 0.007°/s
- Excellent vibration robustness
- Extensive self-diagnostics features
- ±125°/s or ±300°/s angular rate measurement range to cover various application needs
- ±6 g acceleration measurement range
- −40°C～+110°C operating temperature range
- 3.0V～3.6V supply voltage
- SOIC housing body size 18.7 mm x 8.5 mm x 4.5 mm (L × W × H), 32 pins
- Qualified according to the AEC-Q100 standard
Applications
- Advanced Driver-Assistance Systems (ADAS)
- Automated Driving (AD)
- Inertial Navigation for dead reckoning
- Lane Keeping Assistant (LKA)
- Motion and position measurements
- Platform stabilization
- Please visit MEMS 6DoF inertial sensor for more details.
Murata Manufacturing Co., Ltd.
https://www.murata.com/en-us/products/info/sensor/gyro/2020/0528