The six-axis inertial measurement sensor includes a three-axis gyroscope and a three-axis acceleration sensor. The nine-axis inertial measurement sensor includes a three-axis gyroscope, a three-axis acceleration sensor, and a three-axis magnetic induction sensor.
The inertial sensor is a sensor that mainly detects and measures acceleration, tilt, impact, vibration, rotation and multi-degree-of-freedom (DoF) motion. It is an important component in solving navigation, orientation and motion carrier control.
Inertial sensors include accelerometers (or accelerometers) and angular velocity sensors (gyros) and their single, dual, and three-axis combinations IMU (Inertial Measurement Unit), AHRS (including attitude reference of magnetic sensors) system).
MEMS accelerometer is a sensor that uses the inertial force measurement of the sensing mass. It usually consists of a standard mass block (sensing element) and a detection circuit. The IMU is mainly composed of three MEMS acceleration sensors, three gyroscopes and a resolution circuit.
Extended information
As a consumer electronics product, low-precision MEMS inertial sensors are mainly used in mobile phones, GPS navigation, game consoles, digital cameras, music players, wireless mice, PDs, and hard drives. Protectors, smart toys, pedometers, anti-theft systems. With basic measurement functions such as acceleration measurement, tilt measurement, vibration measurement and even rotation measurement, consumer electronics applications to be explored will continue to appear.
As industrial-grade and automotive-grade products, mid-level MEMS inertial sensors are mainly used in automotive electronic stability systems (ESP or ESC), GPS-assisted navigation systems, automotive airbags, vehicle attitude measurement, precision agriculture, and industrial automation. , large medical equipment, robots, instrumentation, engineering machinery, etc.
High-precision MEMS inertial sensors, as military-grade and aerospace-grade products, mainly require high precision, full temperature range, impact resistance and other indices. It is mainly used for stability applications such as communication satellite wireless, missile seekers, and optical targeting systems; control applications such as aircraft/missile flight control, attitude control, and yaw damping, as well as medium-range missile guidance, inertial GP battlefield robots, etc.
Reference: Baidu Encyclopedia-Inertial Sensor