north finder

The north finder is mainly used to quickly and autonomously determine the true north direction, calculate and output the heading angle (angle with true north) function. The north finder is an electromechanical integrated product, which consists of a fiber optic gyroscope, accelerometer, mechanical rotation control device, embedded computer, and mounting base. The north finder is an inertial measurement system that uses the principle of gyroscope to determine the projection direction of the Earth's rotational angular velocity on the local horizontal plane (i.e. true north position).

The NF1000 MEMS inertial north finder is a strapdown north finding solution composed of high-performance MEMS gyroscope and MEMS accelerometer, which can directly measure wellbore inclination angle and tool face angle. The three-axis MEMS gyroscope is sensitive to the angular motion of the carrier, and the three-axis MEMS accelerometer is sensitive to the linear acceleration of the carrier. The module internally compensates for the zero position, scale factor, non-orthogonal error, and acceleration related terms of all temperature parameters, which can maintain high measurement accuracy for a long time.