The smallest North Finder you've ever seen

 The dimensions are only 44.84×38.88×21.39mm and the weight is 60g. The north-seeking accuracy can reach 0.25°~1°, and the update rate is 200Hz. It has the advantages of high precision, light weight and low power consumption, and can quickly and independently determine the true north direction. Compared with other MEMS north seekers, it not only improves the sensitivity of the sensor and reduces errors, but also makes its power supply only support 5±0.25V and the power is 2W. The MEMS gyroscope used has a bias instability of 0.02°/hr and an angular random walk of 0.005°/√hr, which can meet the needs of medium and high-precision measurements, and is small enough for devices with high space and power consumption requirements.

It can be used in directional drilling rigs and deep hole drilling rigs, which can help find the true north direction in coal mines, improve work efficiency, and tunnel boring machines in coal mining to improve the quality of coal mining.

At the same time, it can also be used in radar vehicles and military rocket launch vehicles, which is very helpful in improving the orientation and alignment of rocket launches.

In the field of surveying and mapping vehicles, it can be directly installed on the surveying and mapping vehicle. For static north seeking, you can choose the 01 model for high-precision dynamic north seeking.

Rock drills and tunnel construction can also apply north-seeking technology.

It is not only widely used in high-tech defense fields such as satellites, missiles, and high-precision inertial navigation system initial alignment, but also widely used in geophysical exploration, coal mining, geodesy, mining, underground drilling projects, tunnels and other fields. Excavation, as well as civilian fields such as unmanned vehicle automatic driving systems and vehicle positioning and navigation systems.

If you have any opinions about northfinder , welcome to leave your comments and share with your friends. If you are interested in the northseeker products, you can send message to me or send email to info@ericcointernational.com

Contact us:

WeChat: 13992884879

WhatsApp: 13630231561

 

Application of gyroscope in directional measurement of long-distance subway tunnel

 

Orientation control is particularly important in the directional measurement of long-distance subway tunnels, and is a necessary condition to ensure the smooth penetration of the tunnel. The conventional directional measurement method is to use contact measurement or wire measurement to transmit the orientation. Inertial orientation has incomparable advantages that conventional measurement methods. This article proposes The north-seeker orientation was applied in the directional measurement of long-distance subway tunnels, which verified the effectiveness of the north-seeker in the directional measurement of long-distance cross-sea tunnels.

In order to improve the penetration accuracy of subway tunnels, many rail transit (subway) systems have recently introduced the highest. Accurate, gyroscopic north finder used for directional measurement in subway tunnels.In the construction measurement of subway tunnels, the measurement accuracy of the underground conductor control network is often related to the penetration of the tunnel.Error, high-precision penetration is very important for track engineering construction.

The gyro north finder is a measuring device that finds the true north value of a certain location. It is combined with known ground control

points, which can provide precise direction values for underground conductor control points. Underground conductors are generally connected through shafts

System survey introduces the coordinates of ground control points into the underground. Due to the limitation of shaft size, ultra-short

While controlling the direction of tunnel excavation, the one-way excavation length is too long in some sections.

These conditions have laid hidden dangers for the smooth penetration of the subway tunnel. Therefore, small-sized north seekers are widely favored: for example, ER-MNS-06, with a size of only 44.84×38.88×21.39mm, can be applied to most excavation fields.

The ER-FNS-02 gyro north finder introduced this time is 1 to 3 times more accurate than traditional measurement, with an accuracy of 0.02° to 0.1°. In vertical shafts, the accuracy is more reliable and has greater improvement.

Technicians from the rail transit third-party measurement project tested the orientation accuracy of the gyro north finder when orienting the tunnel. Through on-site testing, it was found that its orientation accuracy was much higher than the accuracy requirements for the tunnel's lateral penetration error required by the specification. This new technology will be used in more rail transit construction.

If you are interested in this north finder, you can leave me a message or send a quote and I will send you the price and technical description.

Email: info@ericcointernational.com

WeChat: 13992884879

WhatsApp: 13630231561

What is the biggest difference between Gyro Northfinder and gyro compass?

 North finder is a high-precision dual-shaft dynamic tuning gyro that can determine the true north direction value of the attached carrier by measuring the angular velocity of the earth's rotation. It is not affected by external magnetic fields or other environments. In addition, it can also be combined with acceleration for horizontal angle measurement and correction. The gyro north finder is mainly used for: radar, antennas, military vehicles, initial alignment and direction control.

The compass is a simple instrument used to determine the orientation. The main component is a magnetic needle that can be freely rotated on the shaft. The magnetic needle can be maintained in the tangential direction of the magnetic meridian under the action of the earth magnetic field. The north pole of the magnetic needle points to the geographic North, and this property can be used to identify the direction. It is commonly used in navigation, geodesy, travel and military affairs.

Since the structures and principles of the two types of gyro north-finding systems are different, they each have their own strengths. Therefore, based on the respective characteristics of these two types of devices, solutions can be complemented during research or use.

For example , MEMS north seeker(north finder) ER-MNS-06 (0.25°-1°) is our Smallest Size Triaxial MEMS North Seeker(north finder),and can be used in different areas where need small size north seeker(north finder).

https://www.ericcointernational.com/.../smallest-size...

If you are interested in the north seeker(north finder) products, you can send message to me or send email.

Contact us:

E-mail:info@ericcointernational.com

WeChat: 13992884879

WhatsApp: 13630231561

Classification of North Finder

 

North finder is a compass, is used to find the north direction at a position value. Gyro north finder, also known as gyrocompass, is an inertial measurement system based on the principle of gyroscope to determine the earth’s rotation rate in the horizontal projection direction of the earth. Its north seeking process does not require external reference. In addition to the high latitude limit, it is not affected by weather, day and night, geomagnetic field and site pass conditions. Gyroscope is a kind of precision inertial measurement instrument, which is used to provide directional reference for artillery, surface-to-surface missile and ground radar and other mobile weapon systems.According to the type of gyro used, gyro finder can be divided into the following three types:

1.A north seeker with two degrees of freedom gyroscope as a earth rotation sensor (such as hanging pendulum gyro    north seeker)

2.A north seeker with a uniaxial rate gyroscope as a sensor (such as a strapdown gyro north finder)

3.Platform north seeking system

Fiber optic gyroscope is a kind of high precision inertial instrument, which can be used to indicate the orientation of the carrier and the true north direction.Use of fiber optic gyroscope measured rate of the earth from the Angle of value and the measured gyroscope and accelerometer horizontal plane Angle, through the computer solution can be obtained in the baseline and the true north direction Angle, placed on the baseline of the accelerometer find north finder attitude Angle can be detected.

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Smallest Size Triaxial MEMS North Seeker

 ER-MNS-06 (0.25°-1°):

1. Smallest Size MEMS north seeker in the world;
2. Resistant to harsh mechanical environment;
3. Light weight, low power consumption.

ER-MNS-06 MEMS North Seeker is the world’s smallest triaxial MEMS north seeker, which is composed of a three-axis MEMS gyroscope and accelerometer, can measure the true north. It has the characteristics of small size, light weight, low power consumption, resistance to harsh mechanical environment, and is widely used in mining, tunnel construction and other fields.

Technical Features

Smallest size MEMS north seeker in the world

Triaxial MEMS gyro and accelerometer

Light weight, low power consumption

Resistant to harsh mechanical environment

If you need a north seeker, you can send your needs directly to the email . We will send the price and catalog to you！
E-mail：info@ericcointernational.com