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.

Do You Know Minimum FOG IMU?

 

ER-FIMU-50 FOG IMU is a minimum cost-effective inertial measurement device for navigation, control and dynamic measurement. The system adopts high reliability closed-loop

hashtagfiber optic gyroscope and hashtagaccelerometer, and ensures the measurement accuracy through multiple compensation techniques.

Applications

hashtagAHRS
Guidance control system
Vehicle and ship attitude measurement
Inertial/satellite hashtagintegrated hashtagnavigation hashtagsystem
Drilling system
Mobile mapping system
Satellite communication in motion

Navigation grade MEMS IMU VS Tactical grade MEME IMU

 

Introduce

Navigation-grade IMU and tactical-grade IMU are different levels of inertial measurement units (IMU). They have significant differences in accuracy, performance and application scenarios. Navigation-level and tactical-level IMU will be introduced below.

 

Navigation grade MEMS IMU

First of all, navigation-grade IMU is mainly used for general navigation and positioning tasks, and its performance requirements are relatively low. It usually has high accuracy and reliability and can meet the needs of most navigation applications. Through internal sensors such as accelerometers and gyroscopes, the navigation-grade IMU can accurately measure key information such as the acceleration, angular velocity, and direction of objects. After processing, this information can be used to achieve precise positioning and navigation functions, thereby improving driving safety and stability.

 

Tactical Grade MEMS IMU

Tactical-grade IMU have some unique core features. For example, they are able to operate gyroscopes with extremely low bias stability, meaning that bias errors become more stable over time. This stability is critical for high-precision applications such as drone navigation. And for higher-precision applications, such as drone navigation, antenna and weapon platform stabilization, tactical-grade IMU are required. Gyroscopes are known to operate with extremely low bias stability, meaning their bias errors remain relatively stable over time. This feature allows tactical-grade IMU to maintain excellent performance in long-term, high-precision applications. In addition, tactical-grade IMU are usually equipped with high-quality MEMS accelerometers and gyroscopes to provide more accurate data output.

 

It can be seen that navigation-grade IMU and tactical-grade IMU have different emphasis on accuracy, performance and application scenarios. When selecting an IMU, the most appropriate level needs to be determined based on specific application requirements. The following will briefly describe the differences between navigation-grade MEMS IMU and tactical-grade MEMS IMU, and introduce two IMU from the domestic inertial navigation company ERICCO.

 

Navigation grade MEMS IMU VS Tactical grade MEMS IMU

There are significant differences in performance and application between navigation-grade IMU and tactical-grade IMU.

 

First of all, navigation-grade IMU are usually used in scenarios that require relatively low accuracy, and their performance and accuracy may not be as good as tactical-grade IMU. Secondly, tactical-grade IMU offer higher performance and accuracy, making them the first choice for demanding applications such as drone navigation. These IMUs operate gyroscopes with extremely low bias stability, which means the bias error becomes more stable over time. This characteristic is essential for mission-critical and high-precision applications such as drone navigation, antenna and weapon platform stabilization.

 

ERICCO is an inertial navigation company that independently develops MEMS IMU. The MERMS IMU it develops are mainly divided into navigation level and tactical level. The following are the company's ER-MIMU-01 (navigation level) and ER-MIMU-03 (tactical level). Level) built-in MEMS gyroscope specification comparison:

	ER-MIMU-01	ER-MIMU-03
Bias Instability	<0.02deg/hr	<0.3deg/hr
Range	100	400
Bias stability (10s 1σ)	<0.1deg/hr	<3deg/hr
Bandwidth (-3dB)	12Hz	250Hz
Angular Random Walk	<0.005°/√h	<0.15°/ √h

 

It can be seen from the above table that the accuracy of the built-in gyroscope of the navigation-grade MEMS IMU is much higher than that of the tactical-grade one, especially the bias instability of the navigation-grade one is 0.02, and the tactical-grade one is 0.3. The accuracy is much higher. ER-MIMU-03 has a larger range than ER-MIMU-01.

Summarize

Navigation-grade IMU and tactical-grade IMU are different in accuracy, stability and applicable scenarios. When selecting, the most appropriate IMU type needs to be determined based on specific application requirements. For more professional information, please consult our relevant personnel.