MEMS North Seeker for Aerospace North Finding Orientation

As one of the important achievements in the application of inertial technology, north seeker has high orientation accuracy, short measurement time, is not restricted by climatic conditions, and can measure the orientation independently in all weather without relying on any external information. It is the preferred equipment for high-precision orientation reference system.

In recent years, with the breakthrough and wide application of MEMS (micro-electronic mechanical system) technology, integrated industrial drones have entered the industrial production and transportation fields such as power inspection, public security fire protection, rescue and disaster relief, remote blasting, and dangerous goods disposal. At present, industrial drones generally use sensors such as MEMS technology north seeker, mainly because of its small size, low power consumption and cheap price, which is loved by domestic and foreign customers.

1.Uav flight control system

As the "brain" of the UAV, the UAV flight control system is the core technology of the UAV. Flight control generally includes three parts: sensor, on-board computer and servo actuator, which can realize three functions of UAV attitude stability and control, mission equipment management and emergency control. The UAV flight control system is mainly composed of key sensors such as inertial sensors, air pressure sensors, ultrasonic sensors, GPS modules, and control circuits. The main function of these sensors is to automatically maintain the normal flight attitude of the aircraft.

The inertial sensor in UAV flight control includes gyroscope and IMU, in which the gyroscope is used to measure the angular rate of rotation of the body around its own axis, that is, the rotation speed of the object. At present, in UAV applications, acceleration sensors and gyroscopes are generally used to form inertial measurement units, and then the north finding algorithm is added to the inertial measurement unit to complete the detection and measurement of UAV attitude in the air. Among them, the acceleration sensor is used to detect the independent three-axis acceleration signal of the UAV in the carrier coordinate system, while the gyroscope is used to detect 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 then calculate the yaw, pitch or rolling attitude of the UAV. North seeker will then transmit the detected data to the master processor MCU. The MCU of the main control processor will control the stable operation of the aircraft through the flight algorithm according to the instructions and data of the user operation.

2. North Finding navigation system for large commercial/military UAVs

The advanced performance of inertial devices is the premise of advanced north seeking navigation system. At present, in the military aviation navigation system, with the depth and wide application of north finder, gyroscope and acceleration sensor have become the two core inertial components. With the further upgrade of MEMS technology, aerospace inertial north finding navigation system is also gradually developing towards high precision, miniaturization and digitalization. The north finder consists of two core inertial components: accelerometer and gyroscope. The gyroscope with three degrees of freedom is used to measure the angular acceleration of the aircraft, three acceleration sensors are used to measure the acceleration of the aircraft, and the computer calculates the speed and position data of the aircraft through the measured angular acceleration and acceleration data.

Summary

It can be seen that MEMS north seeker has a broad space for development in the field of aerospace and aircraft. At present, the MEMS north seeker independently developed by Ericco has obvious advantages at home and abroad. MEMS north seeker with high cost performance ER-MNS-05 is not only suitable for engineering projects with limited monitoring environment, but also can resist the impact brought by the harsh monitoring environment. It has more accurate north finding precision. Also has the world's smallest size MEMS north seeker ER-MNS-06, if you are interested in our technical parameters, welcome to communicate with us.