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Motion sensor module and movable platform

A motion sensor and module technology, applied in the direction of supporting machines, machines/brackets, transportation and packaging, etc., can solve the problems of insufficient rotation frequency, large difference in translation frequency, low control delay, etc., and achieve reduction and reduction The effect of different vibration effects, improving control accuracy and reducing control delay

Inactive Publication Date: 2021-06-18
SZ DJI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Taking the IMU as an example, the IMU module is very important for the control flight of the UAV. Due to the excitation of the aerodynamic load and the dynamic unbalanced load of the blade, the fuselage will contain many high-frequency vibration components, and these high-frequency components will It is collected by the IMU, but these high-frequency components are of no help to the control system, so it is necessary to increase the vibration reduction system of the motion sensor
[0004] At present, most of the vibration reduction systems have large differences in translational frequencies in the X, Y, and Z directions, resulting in large differences in vibration reduction effects in all directions.
The rotation frequency is not high enough, especially for the traversing machine, which is a small drone with high speed and short battery life. In manual mode, it is directly controlled by gyroscope feedback, which requires extremely low control. Delay, if the rotation frequency is too low, it will cause the control delay of the gyroscope

Method used

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  • Motion sensor module and movable platform
  • Motion sensor module and movable platform
  • Motion sensor module and movable platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] figure 1 Schematic diagram of the structure of the motion sensor module provided by the embodiment of the present invention; figure 2 Exploded view of the motion sensor module provided by the embodiment of the present invention. Please refer to the attached figure 1 And attached figure 2 , the motion sensor module provided by the embodiment of the present invention can be applied to a movable platform, including: a motion sensor 10 , a carrier frame 20 , a mounting frame 30 and a plurality of vibration-damping mechanisms 40 .

[0037] Wherein, the carrier 20 is used to carry the motion sensor 10 . Taking the motion sensor 10 as an IMU as an example, the supporting frame 20 corresponds to an IMU board. The so-called IMU board refers to a PCBA (Printed Circuit Board+Assembly) printed circuit board with an IMU.

[0038] The mounting frame 30 is used for connecting to an external mechanism, and the mounting frame 30 is arranged at a distance from the carrier frame 20 ...

Embodiment 2

[0081] In this embodiment, on the basis of Embodiment 1, the specific structures of the bearing frame 20, the mounting frame 30 and the vibration damping mechanism 40 are described, as follows figure 1 and figure 2 As shown, the bearing frame 20 includes a bearing base 21 and a plurality of connecting parts 22 extending from the edge of the bearing base 21 , and the connecting parts 22 are used for detachably connecting the vibration-damping mechanism 40 . The motion sensor 10 can be disposed in the middle of the carrying base 21 . In a specific embodiment, the carrying base 21 can be rectangular, and the connecting portion 22 can be formed by extending from the corner edge of the carrying base 21 .

[0082] Further, such as figure 1 and figure 2 As shown, the connecting portion 22 is provided with a connecting hole 221 , and one end of the damping mechanism 40 is sheathed in the connecting hole 221 . One end of the damping mechanism 40 is sheathed in the connection hole ...

Embodiment 3

[0087] This embodiment provides a movable platform, and the movable platform in this embodiment is an unmanned aerial vehicle, a remote-controlled ground robot or a cloud platform. It includes a fuselage and a motion sensor module installed on the fuselage; wherein, the motion sensor module includes a motion sensor 10 , a bearing frame 20 , a mounting frame 30 and a plurality of vibration-damping mechanisms 40 .

[0088] Wherein, the carrier 20 is used to carry the motion sensor 10 . Taking the motion sensor 10 as an IMU as an example, the supporting frame 20 corresponds to an IMU board. The so-called IMU board refers to a PCBA (Printed Circuit Board+Assembly) printed circuit board with an IMU.

[0089]The mounting frame 30 is used for connecting to an external mechanism, and the mounting frame 30 is arranged at a distance from the carrier frame 20 .

[0090] A plurality of damping mechanisms 40 are distributed around the carrier 20 , one end of each damping mechanism 40 is c...

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Abstract

Disclosed are a motion sensor module and a movable platform. The motion sensor module comprises: a motion sensor (10); a bearing frame (20), used for bearing the motion sensor (10); a mounting frame (30), used for connecting an external mechanism, wherein the mounting frame (30) and the bearing frame (20) are arranged in an opposite and spaced manner; and a plurality of damping mechanisms (40) arranged around the bearing frame (20) in a distributed manner, wherein one end of each damping mechanism (40) is connected to the mounting frame (30), and the other end of each damping mechanism (40) is connected to the bearing frame (20), the axial rigidity of each damping mechanism (40) is greater than the radial rigidity thereof, and each damping mechanism (40) axially extends in such a way that same is tilted from the bearing frame (20) outwards.

Description

technical field [0001] Embodiments of the present invention relate to the installation technology of motion sensors, in particular to motion sensor modules and movable platforms. Background technique [0002] Motion sensor is a commonly used detection instrument, which has certain applications in many industries. With the continuous development of technology, there are more and more types of motion sensors. The commonly used motion sensors mainly include acceleration sensors, gyroscopes, geomagnetic sensors, and inertial measurement units (IMUs). The IMU contains accelerometers and gyroscopes. ; The accelerometer is used to detect the acceleration component of the object, and the gyroscope is used to detect the angle information of the object; generally, the IMU is installed at the center of gravity of the object. Due to its ability to measure the three-axis attitude angle (or angular rate) and acceleration of an object, the IMU is usually used as the core component of navi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/08F16F15/04F16M13/02F16M11/02G01C21/16B64D47/00
CPCF16F15/08F16F15/04F16M13/02F16M11/02G01C21/16B64D47/00B64D43/00
Inventor 蒋李陈凯孙笑轩
Owner SZ DJI TECH CO LTD