Patent-Pending Technologies in High-Performance Intelligent Inertial Sensors

YEI Technology is using patent-pending technologies to develop sensors that are smaller, lighter, and less expensive.

Portsmouth, OH, December 23, 2011 --( YEI Technology is using patent-pending technologies to develop the YEI 3-Space Sensor™ family of intelligent Inertial Measurement Units (IMUs) / Attitude and Heading Reference Systems (AHRS). With prices starting at under $100, advanced inertial technology is entering into price-sensitive and mass-market applications without sacrificing performance.

Each YEI 3-Space Sensor™ uses triaxial gyroscope, accelerometer, and compass sensors in conjunction with advanced on-board filtering and processing algorithms to determine orientation relative to an absolute reference orientation in real-time. The product family offers a breadth of communication, performance, and packaging options ranging from the ultra-miniature surface-mountable TSS Embedded module to fully integrated battery-powered TSS Bluetooth, TSS Wireless 2.4GHz, and TSS Data-logging versions.

Orientation can be returned in absolute terms or relative to a designated reference orientation. The proprietary multi-reference mode increases accuracy and greatly reduces and compensates for sensor error. The YEI 3-Space Sensor™ system also utilizes a dynamic sensor confidence algorithm that ensures optimal and precision across a wide range of operating conditions. Fully filtered orientation (AHRS) outputs at rates up to 200Hz and sensor data (IMU) outputs at rates up to 1000Hz.

The YEI 3-Space Sensor™ family features are accessible via a well-documented open communication protocol that provides access to all available sensor data and configuration parameters using a variety of communication interfaces. Versatile commands allow access to raw sensor data, normalized sensor data, and filtered absolute and relative orientation outputs in multiple formats including: quaternion, Euler angles (pitch/roll/yaw), rotation matrix, axis angle, two vector (forward/up). Customers can use the free YEI 3-Space Suite™ to easily visualize this data in a graphical format as well as log data for future analysis.

You can find out more about the YEI 3-Space sensor product line at or by calling 888.395.9029.

Yost Engineering
Amy Shropshire