Application of ER-MG2–100 (0.02°/h) High Precision MEMS Gyroscope

 

The ER-MG2–100 is a micromachined single-axis gyro sensor. ER-MG2–100 provides highly accurate north-seeking angular rate (gyroscope) measurement with market-leading low power consumption, the bias stability (Allan variance) is only 0.02°/h, and the Bias stability (1σ 10s) is only is 0.1°/h. The ER-MG2–100 is optimized for high accuracy and stability. ER-MG2–100 is designed for north-seeking, advanced differential sensor design rejects the influence of linear acceleration. Angular rate data is presented as a 24-bit word.

ER-MG2–100 is available in a compact 11 x 11 x 2mm package. When the gyroscope is in full operating mode, the power consumption is typically 40mA. ER-MG2–100 is mainly used in high-precision multi-axis applications such as oil drilling, automated driving, and aviation. It can be placed in IMU, north finder, gyrocompass, tool while drilling, and inertial navigation system. The gyroscope used in ERICCO’s upcoming new MEMS IMU ER-MIMU-06 is ER-MG2–100, which will represent a major technological breakthrough in MEMS IMU in terms of high precision.

Application

1. Oil and gas field

Gyroscope measurement is an essential part of drilling, and the harshest use environment for gyroscopes is the oil and gas downhole drilling industry.

The ER-MG2–100 MEMS gyroscope uses a solid-state sensor design to withstand extreme conditions such as downhole shock and vibration without recalibration during use and consumes less energy. The same battery can last longer. The gyro MWD embedded in the ER-MG2–100 can meet the accuracy requirements required by today’s complex drilling environment, and because of its high precision, when used in conjunction with MWD tools, the uncertainty can be reduced by 45%, which is conducive to precision Measurement.

2. Automobile automatic driving

The ER-MG2–100 instrument is a positioning module for the automatic driving function of the car. Autonomous vehicle positioning system usually consists of GPS module, three-axis acceleration sensor and three-axis gyroscope. Information obtained by combining sensors provides the vehicle with its position.

3. Aerospace

Because aerospace technology has very high requirements on the functional density ratio of devices. In aerospace and space applications, high-precision interferometric fiber optic gyroscopes are generally used.

MEMS ER-MG2–100 Compared with FOG, ER-MG2–100 can reach the same high accuracy as FOG but it’s much smaller in size, lower emission-quality and cheaper. low power to maintain temperature. It can be used for attitude and heading reference systems, flight control systems, modal testing, etc. in aerospace applications.

ericco

mems gyro manufacturers

gyro sensor

fiber optic gyro

logging-while-drilling

gyro tool

mems imu

Application of Optical Fiber Gyroscope

The fiber optic gyroscope is an instrument that can accurately determine the position of a moving object. It is an inertial navigation instrument widely used in modern aviation, navigation, aerospace, and defense industries. The fiber optic gyroscope is a sensitive element based on the optical fiber coil, and the light emitted by the laser diode propagates along with the optical fiber in two directions. The difference in light propagation path determines the angular displacement of the sensitive element. Compared with traditional mechanical gyroscopes, fiber optic gyroscopes have the advantages of all-solid-state, no rotating parts and friction parts, long life, large dynamic range, instant start, simple structure, small size, and lightweight. Compared with laser gyroscopes, fiber optic gyroscopes do not have the problem of blocking and do not need to precisely process the optical path from the quartz block, and the cost is relatively low.

The realization of the fiber optic gyroscope is mainly based on the Segnik theory: when the beam travels in a circular channel if the circular channel itself has a rotation speed, then the time required for the light to travel along the channel’s rotation direction is longer than that along the channel. It takes more time to rotate in the opposite direction. That is to say, when the optical loop rotates, in different traveling directions, the optical path of the optical loop will change relative to the optical path of the loop when the loop is stationary. Using this change in the optical path to detect the phase difference between the two optical paths or the change in interference fringes, the rotational angular velocity of the optical path can be measured. This is the working principle of the fiber optic gyroscope. “The characteristics of fiber optic gyroscopes: low energy consumption, long lifespan, and strong reliability. It is also the characteristics of fiber optic gyroscopes that determine it has always been dominant in strategic gyroscopes. This is also an important reason why ERICCO has been committed to promoting the development of FOG.” The CEO of ERICCO said.

The application of fiber optic gyroscope is very wide:

1. Navigational applications Compass is important navigation equipment for ships, mainly including the magnetic compass and gyrocompass. With the development of fiber optic gyroscope technology and the improvement of commercialization, fiber optic gyroscopes have become a new member of marine navigation equipment and are used in commercial and military ships and marine equipment. The fiber optic gyroscope compass based on strapdown inertial navigation system has its rotation axis corresponding to the three axes of the ship’s coordinate system. It can not only be used as a high-precision heading information source to realize automatic north finding and pointing, but also can be obtained Reliable data such as the rate of heading rotation, the angle of roll and pitch, and the rate of rotation of the heading further promote the automated development of ships, ensuring the ship’s maneuvering effects and ensuring the safety of navigation.

2. Aerospace and space applications In aerospace and space applications, high-precision interferometric fiber optic gyroscopes are generally used. IFOG is the strapdown inertial navigation system of the main inertial element, which can provide the aircraft with three-dimensional angular velocity, position, angle of attack, and sideslip angle, and realize the tracking and measurement of a rocket launch. It can also be used for space vehicle stabilization, photography/surveying, mapping, attitude measurement control, motion compensation, EO/FLIR stabilization, navigation and flight control, etc. Among them, the high-precision, high-reliability fiber optic gyroscope, and GPS combined attitude determination has become a spacecraft at home and abroad The typical configuration of the posture system. Like ERICCO’s ER-FOG851, is designed with the concept of traditional fiber optic gyroscope and adopts matured fiber optic gyroscope manufacturing technology. It owns characteristics of small volume, lightweight, low power consumption, fast start-up, simple operation and convenient to use, etc.

3. Military applications The fiber optic gyroscope has a wide range of military applications due to its superiority in angular rate and acceleration measurement and its significant advantages in dynamic range, sensitivity, and reliability. It can be used for positioning, orientation, and navigation of tanks, submarines, self-propelled artillery, and armored assault vehicles; when satellite navigation is in strong electronic interference and cannot obtain accurate information, fiber optic gyros can be used to ensure autonomous navigation, precise guidance and accurate hitting of the target. At the same time, the FOG component is also an important part of the aviation fire control system, which can be used to stabilize the sightline and firing line of weapon systems such as armed helicopters, ensuring that the weapon can search, aim, track and shoot in motion. In addition, the fiber optic gyroscope is also the only effective navigation technology underwater, which can be used for positioning, orientation, and navigation of submarines.

4. Civilian applications In the civil field, it mainly focuses on the application of low- and medium-precision fiber optic gyroscopes. The main applications are automatic navigation, positioning and orientation of ground vehicles, vehicle control; attitude control of agricultural aircraft, sowing and spraying pesticides; in underground engineering maintenance, looking for damage Positioning tools and rescue tools for the position of power lines, pipelines and communication optical (electric) cables; used for geodetic surveying, mineral exploration, petroleum exploration, oil drilling steering, tunnel construction, etc. positioning and path survey, and the use of optical fiber gyro rotation angle And linear displacement to achieve dam inclination measurement and so on. Due to its high cost, its use still has great limitations. Beixun has developed cost-effective fiber optic gyroscope products in response to this problem, which has also promoted the rapid development of my country’s high-precision industry.

Ericco is an industry leader with rich product experience in the field of optical fiber gyroscopes. If you want more details about our products, you can log in to https://www.ericcointernational.com/.

FOG North Seeker

MEMS North Seeker

Land Positioning and Orientation System

mining north finder

mining north seeker

MEMS Inertial navigation system

inertial survey system

integrated navigation system

Attitude Heading Reference System (AHRS)

gyro theodolite

digital compass

electronic compass

tilt sensor

inclination sensor

Electronic Compass and Gyroscope

MEMS gyroscopes are not the earliest motion sensors used in consumer electronics. Acceleration sensors and electronic compasses entered the consumer electronics market earlier. Although the acceleration sensor with reference to gravity and the electronic compass with reference to geomagnetism can form vertical and horizontal three-dimensional space coverage on the earth’s surface, because both of them use the earth rather than the object itself as the reference object, they cannot simulate well. the entire motion of an object. In addition, since the accelerometer is easily disturbed by the force generated during linear motion, and the electronic compass is easily disturbed by other magnetic fields such as metals and mobile phones, its application is greatly limited.

The electronic compass mainly detects the geomagnetism. Common electronic compasses are mainly based on the Hall effect. However, the geomagnetic environment is not perfect. For example, the south pole of the geomagnetism does not necessarily point to the same north on different surfaces of the earth; and at different latitudes of the earth, the angle between the direction of the geomagnetism and the horizontal direction is also different. Therefore, the electronic compass can only point to a general direction, and then correct it. In addition, electronic compasses are also susceptible to interference from magnetic fields such as metals, speakers, and antennas.

The gyroscope, a sensor that measures angular velocity, not only uses the object itself as a reference, but also has high precision, so it can be a useful supplement to other motion sensors, thus making motion detection more complete. A gyroscope can be a useful complement to an accelerometer and an electronic compass. When a three-axis gyroscope is combined with a three-axis acceleration sensor to form a six-axis motion sensor, basically all forms of motion can be detected, including parameters such as speed, direction, and displacement.

There are no more than six kinds of motion of an object, displacement in three directions of X, Y, and Z and rotation in three directions of X, Y, and Z. These six motion modes constitute the complete motion trajectory of the object. If an electronic compass is added to the six-axis motion sensor, the absolute position can be corrected while the motion trajectory is detected to achieve perfect object motion trajectory tracking. Therefore, the further development and application of the gyroscope in the future are closely related to the acceleration sensor and the electronic compass.