North Seeker’s concept :
The north finder is an inertial instrument that independently indicates the azimuth. It can give the angle between the carrier and the true north direction without inputting the latitude value. It can also measure the azimuth angle of the carrier all-weather and globally. It is composed of gyroscope and accelerometer and its data acquisition and processing system. The principle is to measure the rotation angular velocity of the earth through a gyroscope, and measure the linear acceleration of the carrier with an accelerometer, and then obtain the angle between a fixed axis of the carrier and the true north direction through calculation.
Working principle:
It is assumed that the sensitive axis of the fiber optic gyroscope is in the horizontal plane and consistent with the direction of the longitudinal axis of the carrier; by sensing the horizontal component of the earth's rotation angular rate in the geographical coordinate system, it can calculate the angle between the longitudinal axis of the carrier and true north or directly Determine the direction of north to achieve autonomous orientation.
Performance indicators :
Performance indicators are important standards for measuring the quality and normal operation of the product itself. Performance indicators of the gyro north finder: north setting time, north setting accuracy, output form, ambient temperature and direction control, etc. Users who are interested in this can take a look at the specific parameters of our products.
Basic introduction of products:
In terms of north-seeking equipment, we divide our products into two series: one is north-seeking equipment with fiber optic gyroscope technology as the core, and the other is north-seeking equipment with MEMS gyroscope technology as the core. At present, Ericco has applied for relevant patents on north seekers. It has product advantages not only nationwide but also globally. Take ER-MNS-06 as an example, it is currently the smallest product in the world, with a three-axis MEMS gyroscope and accelerometer as its core components. It is not only small in size, but also light in weight, only 60g. It is light and easy to carry, and can operate normally in harsh monitoring environments. It is very suitable for mining, oil exploration and other work.
Product features:
The product has built-in gyroscope and accelerometer as core components. Compared with traditional mechanical gyroscopes, it has the advantages of simple structure, no rotating parts, light weight, impact resistance, long service life, low power consumption, and large dynamic engineering volume.
After the initial power-on and alignment, the output can be continuous without drift, and there is no need to initialize the alignment midway.
It requires no external reference during the north finding process. In addition to being limited by high latitude, its north-seeking measurement is not affected by weather, day and night time, geomagnetic field and site visibility conditions.
The MEMS north seeker can perform full temperature compensation and operate normally in harsh environments.
During the process of seeking north when the power is operating, the gyro is rotating at high speed, so it cannot move during the process of seeking north.
Application areas:
Different north-finding equipment is used in different work areas. Generally, our products are mainly used for direction pointing and tracking in satellite antennas and target tracking systems, orientation and positioning in railway train systems, precision attitude and position measurement in navigation-grade MEMS IMU/INS, and geodetic/land mobile mapping systems. North-seeking positioning in bridges, high-rise buildings, iron towers, dam monitoring and coal mining, etc. Customers who have requirements on product size and volume can choose our small-sized north seeker, and customers who have harsh monitoring environments can choose MEMS north seekers. For customers with limited budget, you can choose a Low-Cost 3-axis north finder.
If you have other requirements for products, please feel free to contact us. We not only provide specific products, but also provide you with suitable solutions.
More Technical Questions
1.Application of Fiber Optic Gyroscope North Finder
2.Test the Accuracy of Ericco’s 3 Axis FOG North Finder
3.Application of North Finder in Mining Industry
4.Application of MEMS Accelerometer in North Finder
5.Ericco’s Technical Engineer Testing the Performance of MEMS North Finder
6.Do You Know Excellent Performance of MEMS North Finder ER-MNS-05?
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