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The SZ DJI Technology Co., Ltd. patent solves the following problem:
Today, strapdown inertial navigation is a kind of booming and advanced navigation technology, which, inertial element including a gyroscope, an accelerometer and thus to be fixed at a carrier directly used for measuring an acceleration of the carrier relative to an inertial reference system. Then the information on speed, attitude angle position and a navigation coordinate system can be achieved in an integrated operation based on Newton’s law of inertia, to guide the carrier from a start point to a destination. Besides, the strapdown inertial navigation technology, math operations involving coordination change and differential equation solution on the data measured by the gyroscope and accelerometer controlled by a computer control, to take the attitude data and tabok- navigation data from the elements in a natural matrix to finish the navigation mission. Strapdown inertial navigation system, a maths platform built based on updated data as an updated strapdown matrix in place of a traditional electromechanical navigation platform in order to achieve a simpler system building, significantly reducing the system size and cost, as well as inertial element easy to install and maintain. Furthermore, the strapdown inertial navigation system is independent of external support system, thus obtaining the information concerning the nature, speed and position himself. It will not shine any information out. Therefore, because of advantages such as real-time, independent, without interruption, free from the constraints in the region, time and weather conditions, as well as comprehensive output parameters, it is widely used in the plural fields including aviation, sailing and traffic etc.
Our analysis of this patent is as follows:
SZ DJI Technology Co., Ltd.’s patent US 9213046 B2 deals with Micro inertial measurement system.
A micro inertial measurement system includes a house, a sensing module, and a damper. The sensing module includes a rigid support sensing, measuring and controlling circuit board mounted on rigid support and hear an inertial sensor set at measuring and controlling circuit board. The inertial sensor includes a gyroscope and an accelerometer. The sensing module is mounted in the housing. The damper is mounted on the housing and set in the gap between the sensing module and the inner wall of the housing. Using the above-mentioned structure, the noise immunity of inertial measuring system will be greatly improved, and the number and weight of the inertial measuring system can be greatly reduced.
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