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What is an #Inertial #Measurement #Unit?

More detail: https://www.ericcointernational.com/.../what-is-an...

1. What is #IMU?

An Inertial Measurement Unit (IMU) is a device that can measure and report the specific gravity and angular rate of an object to which it is attached. Imus typically include:

#Gyro: provides angular rate measurement

#Accelerometer: Provides specific force/acceleration measurement

Magnetometer (optional) : Measures the magnetic field around the system

Adding magnetometers and filtering algorithms to determine directional information results in a device called the Attitude and Heading Reference System (#AHRS).

Imus are available in a variety of performance levels. According to the specifications of #accelerometers and #gyroscopes, they are divided into one of four categories:

Consumer/Automotive grade

#Industrial grade

#Tactical level

Marine class

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Analysis of Performance Index of #Fiber #Optic #Gyroscope

more details: https://www.ericcointernational.com/application/analysis-of-performance-index-of-fiber-optic-gyroscope.html

The principle of fiber optic gyro is physically called Sagnac effect. In a closed optical path, two beams of light emitted from the same light source, relative propagation, confluence to the same detection point will produce interference, if the closed optical path has rotation relative to the inertial space, the beam propagating in the positive direction and the opposite direction will produce optical path difference, the difference is proportional to the upper rotation angular speed. The rotation angular velocity of the meter is calculated by measuring the phase difference of the photodetector. Delta ∅ R = (2 PI LD/lambda c) * Ω It can be seen from the formula that the longer the length of the fiber, the larger the light travel radius and the shorter the light wavelength. The more obvious the interference effect. Therefore, the larger the size of the fiber optic gyro, the higher the accuracy. The Sagnac effect is essentially a relativistic effect. It is very important for the design of fiber optic gyro. The principle of a fiber optic gyroscope is that a beam of light is emitted from a photocell and passes through a coupler (1 end into 3 ends). Through the halo. Two beams enter the ring in different directions and come back around for a coherent superposition. The returned light is returned to the light-emitting diode and the intensity is detected by the light-emitting diode. The principle of fiber optic gyro looks relatively simple, but the most important thing is how to eliminate the factors that affect the optical path of the two beams. This is the most important problem facing doing fiber optic dras.

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High Performance North Seeking MEMS Gyroscope#gyroscope

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High Performance North Seeking MEMS Gyroscope#gyroscope

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High Performance North Seeking MEMS Gyroscope#gyroscope

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Low Cost 3 Axis FOG North Seeker#truenorth

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Low Cost 3 Axis FOG North Seeker#truenorth

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Different stages of product development-three-axis MEMS North Seeker

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So Amazing! You Ever Seen This Tiny Quartz Accelerometer!

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Different stages of product development-three-axis MEMS North Seeker

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3-Axis Fiber Optic Gyro test

https://youtube.com/shorts/u607rLCQAvE?feature=share

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3-Axis Fiber Optic Gyro test

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ER-FNS-02

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Do you know the difference between true north and magnetic north?#applic...

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Da-Yan Tower in Xi'an,#china#centralasia