Efficient mining: MEMS IMU unlocks new possibilities for oil and mining

     

    Oil and coal are important basic energy sources. With the rapid development of science and technology, MEMS IMU is increasingly widely used in the fields of oil and mining, injecting new vitality into this traditional industry. Oil and mining are complex and arduous tasks, facing many challenges. Most of these resources are distributed in areas with complex geological conditions. As resources are gradually depleted, the difficulty of exploration and mining continues to increase, which puts higher requirements on exploration and mining equipment.

In response to these problems, ERICCO has developed a new MEMS IMU ER-MIMU-09 specifically for the oil and mining field, which is mainly used in gyroscope tools and directional drilling tools. There are four versions in this series (ER-MIMU-09A, ER-MIMU-09B, ER-MIMU-09C, ER-MIMU-09H), with different accuracy and working temperature, which can be selected according to needs.

New appearance, small size

This IMU is designed for drilling rigs. It adopts a cylindrical shape with a diameter of only 30mm. It can be easily used in the probe tube, meeting the needs of users with higher requirements for tool tube diameters and providing convenience for limited working spaces.

High precision, high performance

Equipped with high-performance three-axis MEMS gyroscope and three-axis accelerometer, the small size does not compromise performance. The built-in gyroscope bias instability is 0.01-0.02deg/hr, and the angular velocity random walk is 0.0025-0.025°/√h. The accelerometer bias stability is ≤0.05mg, and the bias repeatability is ≤0.1mg. It can accurately output angular rate and acceleration information to help drilling engineers accurately control the trajectory of the drill bit and improve operating efficiency.

Strong environmental adaptability

This IMU adopts MEMS technology. In addition to low power consumption, it has good shock and vibration resistance and is not affected by magnetic fields. Considering the special operating environment in the field of oil mining, general IMUs cannot accurately output information in high temperature environments. We divide this IMU into normal temperature version (ER-MIMU-09A, ER-MIMU-09B, ER-MIMU-09C) and high temperature version (ER-MIMU-09H). The normal temperature version has an operating temperature of -40℃~ +80℃, and the high temperature version has an operating temperature of -40℃~ +125℃. It can work continuously in high temperature and harsh environments.

If you are also looking for a tool that can improve your work efficiency, then why not try our MEMS IMU! For data sheets, pricing and other information, please email me and I will respond immediately.

Email: ericco188@ericcointernational.com

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IMU working principle & Tactical grade IMU product recommendations

Nowadays, (Micro-electromechanical Systems, MEMS) inertial sensors and inertial systems have become an indispensable development direction of future navigation technology. MEMS technology has been widely used due to its advantages such as small size, light weight, low power consumption, low cost, and impact resistance. At present, the development of MEMS inertial technology is relatively mature. It forms a combined system with auxiliary systems such as gyroscopes and accelerometers, which can provide appropriate solutions for most navigation applications. The IMUs developed by Ericco are divided into MEMS IMU and FOG IMU. MEMS inertial measurement units are divided into tactical grade and navigation grade. Navigation-level IMUs can independently seek north, while tactical-level IMUs can rely on magnetometers or GNSS to find north. The following will be divided into two parts: an introduction to the working principle of the inertial measurement unit and a product introduction of ERICCO's tactical-level IMUs.

 

How the MEMS Inertial Measurement Unit (IMU) works:

The inertial measurement unit is a device that measures the three-axis attitude angle (or angular rate) and acceleration of an object. Generally, an IMU contains three single-axis accelerometers and three single-axis gyroscopes. The accelerometer detects the acceleration signals of the object in three independent axes of the carrier coordinate system, while the gyroscope detects the angular velocity signal of the carrier relative to the navigation coordinate system. Measure the angular velocity and acceleration of the object in three-dimensional space, and use this to calculate the attitude of the object. It has very important application value in navigation. IMUs are mostly used in equipment that require motion control, such as cars and robots. It is also used in situations where precise displacement calculations using attitude are required, such as inertial navigation equipment for submarines, aircraft, missiles and spacecraft.

 

The principle of an inertial measurement unit is very similar to taking small steps in the dark. In the dark, due to the error between your estimate of the step length and the actual distance traveled, as you take more and more steps, the difference between your estimated position and the actual position will become farther and farther. When taking the first step, the estimated position is relatively close to the actual position; but as the number of steps increases, the difference between the estimated position and the actual position becomes larger and larger. This method is extended to three dimensions, which is the principle of the inertial measurement unit.

 

The academic expression is: Based on Newton's laws of mechanics, by measuring the acceleration of the carrier in the inertial reference system, integrating it over time, and transforming it into the navigation coordinate system, the velocity in the navigation coordinate system can be obtained. , yaw angle and position information.

 

Therefore, in layman's terms, the inertial measurement unit IMU is a strapdown inertial navigation system. The system consists of three acceleration sensors and three angular velocity sensors (gyros). The accelerometer is used to feel the acceleration component relative to the vertical line of the ground. The speed sensor is used to get a feel for the angle information.

 

It is worth noting that the inertial measurement unit provides relative positioning information. Its function is to measure the movement route of the object relative to the starting point, so it cannot provide information about your specific location. Therefore, it is often combined with GPS. Used together, when the GPS signal is weak in certain places, the IMU can play its role, allowing the car to continue to obtain absolute position information and not get "lost."

ERICCO tactical grade inertial measurement unit

Next, we will mainly learn about a new inertial measurement unit - ERICCO INERTIAL SYSTEM tactical-grade inertial measurement unit: ER-MIMU03（High Precision Navigation/Stable Control MEMS IMU）.

 

ERICCO launches a tactical-grade inertial measurement unit (IMU): ER-MIMU03 uses high-quality and reliable MEMS accelerometers and gyroscopes. Equipped with X, Y, Z three-axis precision gyroscope, X, Y, Z three-axis accelerometer, with high resolution, it can output the original hexadecimal complement of X, Y, Z three-axis gyroscope and accelerometer through RS422 code data (including gyroscope hexadecimal complement) numerical temperature, angle, accelerometer hexadecimal temperature, acceleration hexadecimal complement); it can also output gyroscope and accelerometer data that have been processed by underlying calculations Floating point dimensionless value. ). The IMU has a built-in acceleration sensor and gyroscope, which can measure linear acceleration and rotational angular velocity in three directions, and obtain the attitude, speed and displacement information of the carrier through analysis. Applications for this tactical-grade IMU include azimuth, attitude, position measurement and maintenance in GNSS-assisted INS. Heading, pitch, roll measurement in UAV AHRS Robot control and control Autonomous machines, unmanned vehicle directional stabilization and control satellite antenna pointing, target tracking system Guidance, navigation and control attitude and attitude IMU in tactical MEMS weapon systems The azimuth angle is maintained and positioned. Movement investigation and maintenance in MRU and other application areas.

 

High Precision Navigation/Stable Control MEMS IMU integrates a three-axis MEMS accelerometer and a three-axis MEMS gyroscope in a unique redundant design, which can maximize performance while reducing device size.

 

In terms of performance specifications, the High Precision Navigation/Stable Control MEMS IMU has an excellent gyroscope and accelerometer. The bias instability of the gyroscope is 0.3°/h. Enables long-term dead reckoning and maintains excellent heading performance. The MEMS sensor in ER-MIMU03 has extremely low vibration correction errors and can withstand high vibration environments up to 6.06g.

 

With very low gyro bias instability, the navigation performance of High Precision Navigation/Stable Control MEMS IMU can work well when GNSS is interfered with or has no signal. This tactical-grade IMU has relatively high accuracy compared to tactical-grade IMUs from other peer companies. If you want to purchase our IMU, please contact our relevant personnel.

 

Ericco new product launch: MEME ultra-high precision accelerometer

 

ERICCO's newly released MEMS accelerometer ER-MA-6 Ultra High Precision MEMS Accelerometer can output continuous, ultra-precise position, speed and attitude information, providing new solutions for autonomous navigation, surveying and mapping, motion analysis and other fields.

This is the most accurate product among ERICCO's MEMS accelerometer products, and it can be regarded as the top MEMS accelerometer in China.

 

Main functions and advantages of ER-MA-6:

1.Higher accuracy

ER-MA-6 is a MEMS accelerometer with a large range, ultra-high accuracy, high reliability and low power consumption.

2.ER-MA-6 Features

Large range, ultra-high accuracy, high reliability and low power consumption

Type II nonlinearity: <10µg/g2

Bias stability (1s smoothing) (1σ): <15ug

Bias stability (1s smoothing): <5ug

Bias instability (Allan curve): <2ug

 

Applications of ER-MA-6:

Inertial measurement: inertial guidance, overload measurement, integrated navigation

Tilt measurement: antenna attitude, platform measurement, tilt angle test

Vibration measurement: mechanical equipment, bridges and dams, safety tests

 

Ericco has an excellent R&D team. As a product independently developed by Ericco, ER-MA-6 has a professional and efficient product line.

For more information about ER-MA-6, please visit: https://www.ericcointernational.com/accelerometer/ultra-high-precision-mems-accelerometer.html

What is a digital output - Full attitude 3D electronic Compass

 

more detail：https://www.ericcointernational.com/.../three-dimensional...

The ER-EC-360A is a high precision full attitude 3D electronic compass that uses hard and soft iron calibration algorithms to provide high precision course information in 360° roll and +/-90° full dip range. It has the characteristics of small volume and low power consumption and is more suitable for the measurement system with power consumption and volume sensitivity.

The precise attitude of the product output carrier can be used in the system of full attitude rotation. This product has hard magnetic, soft magnetic and tilt compensation, compass output after calibration of high precision measurement. The patented triaxial fluxgate, which uses the CPU to calculate the course in real time and the triaxial accelerometer to compensate for the course angle, provides accurate course data even in extremely harsh environments. With the characteristics of small size and low power consumption, it is widely used in many fields such as petroleum logging, antenna pointing, vehicle navigation, attitude system and so on.

How does Tactical Fiber Optic Gyroscope Work？

 

Fiber optic gyroscope industry market

With its unique advantages, fiber optic gyroscope has a broad development prospect in the field of precision physical quantity measurement. Therefore, exploring the influence of optical devices and physical environment on the performance of fiber optic gyros and suppressing the relative intensity noise have become the key technologies to realize the high precision fiber optic gyro. With the deepening of research, the integrated fiber gyroscope with high precision and miniaturization will be greatly developed and applied.

Fiber optic gyroscope is one of the mainstream devices in the field of inertia technology at present. With the improvement of technical level, the application scale of fiber optic gyro will continue to expand. As the core component of fiber optic gyros, the market demand will also grow. At present, China's high-end optical fiber ring still needs to be imported, and under the general trend of domestic substitution, the core competitiveness of China's optical fiber ring enterprises and independent research and development capabilities still need to be further enhanced.

At present, the optical fiber ring is mainly used in the military field, but with the expansion of the application of optical fiber gyroscope to the civilian field, the application proportion of optical fiber ring in the civilian field will be further improved.

According to the "2022-2027 China Fiber Optic Gyroscope industry Market Survey and Investment Advice Analysis Report" :

The fiber optic gyroscope is a sensitive element based on the optical fiber coil, and the light emitted by the laser diode propagates along the optical fiber in two directions. The difference of light propagation path determines the angular displacement of the sensitive element. Modern fiber optic gyro is an instrument that can accurately determine the orientation of moving objects. It is an inertial navigation instrument widely used in modern aviation, navigation, aerospace and national defense industries. Its development is of great strategic significance to a country's industry, national defense and other high-tech development.
Fiber optic gyro is a new all-solid-state fiber optic sensor based on Sagnac effect. Fiber optic gyro can be divided into interferometric fiber optic gyros (I-FOG), resonant fiber optic gyro (R-FOG) and stimulated Brillouin scattering fiber optic gyro (B-FOG) according to its working mode. According to its accuracy, fiber optic gyro can be divided into: low-end tactical level, high-end tactical level, navigation level and precision level. Fiber optic gyroscopes can be divided into military and civilian according to their openness. At present, most fiber optic gyros are used in military aspects: fighter and missile attitude, tank navigation, submarine heading measurement, infantry fighting vehicles and other fields. Civil use is mainly automobile and aircraft navigation, bridge surveying, oil drilling and other fields.
Depending on the accuracy of the fiber optic gyroscope, its applications range from strategic weapons and equipment to commercial grade civilian fields. Medium and high-precision fiber optic gyroscopes are mainly used in high-end weapons and equipment fields such as aerospace, while low-cost, low-precision fiber optic gyroscopes are mainly used in oil exploration, agricultural aircraft attitude control, robots and many other civilian fields with low precision requirements. With the development of advanced microelectronics and optoelectronics technologies, such as photoelectric integration and the development of special fiber optics for fiber optic gyros, the miniaturization and low-cost of fiber optic gyros have been accelerated.

Summary

Ericco's fiber optic gyro is mainly a medium precision tactical fiber optic gyro, compared with other manufacturers, low cost, long service life, the price is very dominant, and the application field is also very wide, including two very hot selling ER-FOG-851, ER-FOG-910, you can click the details page for more technical data,

Tactical Grade Fiber Optic Gyro Comparison

If you have any purchase needs, feel free to send the inquiry, or contact us directly: Phone: +86-13992884879
Email: info@ericcointernational.com.

What is a tactical grade fiber optic gyro?

 

Ericco fiber optic gyro are mainly divided into tactical and navigation levels, and the accuracy of tactical fiber optic gyroscopes is generally 0.x-xº/h. Our tactical fiber-optic gyroscope is ER-FOG-50, https://www.ericcointernational.com/.../single-axis-fog... its accuracy is 0.2~2.0º/h, its size is very small, only Φ50mm×38mm, tactical fiber-optic gyroscope is mainly used in optical pods, missile seeker, UAV, small IMU, inertial navigation system, etc., the measurement range is -500~+500º/s. Both in terms of price and longevity, it will be your choice. If you want to get more technical data, please feel free to contact us at: info@ericcointernational.com. Phone: +86-13992884879

Why is it Called Fiber Optic Gyroscope?

 Like ring laser gyro, fiber optic gyro has the advantages of no mechanical moving parts, no preheating time, insensitive acceleration, wide dynamic range, digital output and small size. In addition, fiber optic gyro also overcomes the fatal shortcomings of ring laser gyro such as high cost and blocking phenomenon.

Fiber optic gyro is a kind of optical fiber sensor used in inertial navigation.
Because it has no moving parts - high-speed rotor, called solid state gyroscope. This new all-solid gyroscope will become the leading product in the future and has a wide range of development prospects and application prospects.

1. Fiber optic gyro classification

According to the working principle, fiber optic gyroscope can be divided into interferometric fiber optic gyro (I-FOG), resonant fiber optic gyro (R-FOG) and stimulated Brillouin scattering fiber optic gyroscope (B-FOG). At present, the most mature fiber optic gyro is the interferometric fiber optic gyroscope (that is, the first generation of fiber optic gyroscope), which is the most widely used. It uses multi-turn optical fiber coil to enhance SAGNAC effect. A double-beam ring interferometer composed of multi-turn single-mode optical fiber coil can provide high accuracy, but also will inevitably make the overall structure more complicated.
Fiber optic gyros are divided into open ring fiber optic gyroscopes and closed loop fiber optic gyros according to the type of loop. Open-loop fiber optic gyro without feedback, directly detect the optical output, save many complex optical and circuit structure, has the advantages of simple structure, cheap price, high reliability, low power consumption, the disadvantage is the input-output linearity is poor, small dynamic range, mainly used as an Angle sensor. The basic structure of an open-loop interferometric fiber optic gyro is a ring dual-beam interferometer. It is mainly used for occasions where the accuracy is not high and the volume is small.

2. Status and future of fiber optic gyroscope

With the rapid development of fiber optic gyro, many large companies, especially military equipment companies, have invested huge financial resources to study it. The main research companies for the United States, Japan, Germany, France, Italy, Russia, low and medium precision gyroscope has completed the industrialization, and the United States has maintained a leading position in this area of research.
The development of fiber optic gyroscope is still at a relatively backward level in our country. According to the level of development, the gyro development is divided into three echelons: the first echelon is the United States, the United Kingdom, France, they have all the gyro and inertial navigation research and development capabilities; The second tier is mainly Japan, Germany, Russia; China is currently in the third tier. The research of fiber optic gyro in China started relatively late, but with the efforts of the majority of scientific researchers, it has gradually narrowed the gap between us and the developed countries.
At present, China's fiber optic gyro industry chain is complete, and manufacturers can be found upstream and downstream of the industry chain, and the development accuracy of fiber optic gyro has reached the requirements of middle and low accuracy of inertial navigation system. Although the performance is relatively poor, it will not bottleneck like the chip.
The future development of fiber optic gyro will focus on the following aspects:
(1) High precision. Higher precision is an inevitable requirement for fiber optic gyro to replace laser gyro in advanced navigation. At present, the high precision fiber optic gyro technology is not fully mature.
(2) High stability and anti-interference. Long-term high stability is also one of the development directions of fiber optic gyroscope, which can maintain navigation accuracy for a long time under harsh environment is the requirement of inertial navigation system for gyroscope. For example, in the case of high temperature, strong earthquake, strong magnetic field, etc., the fiber optic gyro must also have sufficient accuracy to meet the requirements of users.
(3) Product diversification. It is necessary to develop products with different precision and different needs. Different users have different requirements for navigation accuracy, and the structure of the fiber optic gyro is simple, and only the length and diameter of the coil need to be adjusted when changing the accuracy. In this respect, it has the advantage of surpassing mechanical gyro and laser gyro, and its different precision products are easier to achieve, which is the inevitable requirement of the practical application of fiber optic gyro.
(4) Production scale. The reduction of cost is also one of the preconditions for fiber optic gyro to be accepted by users. The production scale of various components can effectively promote the reduction of production costs, especially for middle and low precision fiber optic gyro.

3.Summary

The accuracy of the fiber optic gyroscope ER-FOG-50 is 0.2~2.0º/h, and the accuracy of the ER-FOG-60 is 0.06~0.5º/h. Their application fields are basically the same, and can be used in small IMU, INS, missile seeker servo tracking, photoelectric pod, UAV and other application fields. If you want more technical data, please feel free to contact us.