UAV IMU Mounting Bracket Integrated With Circuit Board

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Solution Overview

Problem

The installation of inertial measurement units (IMUs) in unmanned aerial vehicles (UAVs) is challenging due to space constraints within the UAV housing, which hinders miniaturization as existing methods require additional space for mounting brackets, often occupying space meant for printed circuit boards (PCBs).

Innovation Solution

The IMU is directly fixed to a circuit board with a mounting bracket, eliminating the need for a separate mounting space within the UAV body, and integrating functional modules onto the same circuit board to enhance compactness and miniaturization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the IMU is fixed inside the housing through a mounting bracket, then the reliability of attitude measurement is improved, but the space inside the housing is occupied, which is not ideal for miniaturization

Engineering Contradiction:

Improvereliability of attitude measurementVSAvoidspace inside housing

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The mounting bracket is integrated with the circuit board, merging two previously separate components (mounting bracket and circuit board) into a single unified structure. This eliminates the need for a separate mounting space inside the housing while maintaining the IMU's secure attachment, thus improving space utilization for miniaturization without compromising measurement reliability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The circuit board is designed to serve multiple functions: it not only provides electrical connections for functional modules but also acts as a mounting platform for the IMU through the integrated mounting bracket. This multi-functionality reduces the number of separate components needed, saving space inside the housing while ensuring reliable IMU attachment

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Strength

If a separate mounting bracket is used to fix the IMU, then the IMU is securely mounted, but more space is required which hinders miniaturization

Engineering Contradiction:

Improvesecure mounting of IMUVSAvoidspace required for mounting

Core Design Contradiction:

StrengthVSVolume of moving object

Solution Approach 1:

The mounting bracket structure is merged with the circuit board, creating a unified component that provides both electrical connectivity and mechanical mounting support. This integration maintains secure IMU attachment while eliminating the need for additional mounting space, thus supporting miniaturization efforts

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10946961B2Unmanned aerial vehicle

Publication Date: 2021.03.16 SZ DJI TECH CO LTD

AI summary

The present disclosure provides an unmanned aerial vehicle (UAV). The UAV includes a main body; an inertial measurement unit (IMU) disposed in the main body; a mounting bracket for fixing the IMU; and a circuit board fixedly disposed at the main body and integrated with a plurality of functional modules. The IMU is fixed on the circuit board through the mounting bracket.