基于UWB的车身结构应变无线数据采集系统(硬件部分)设计(英文版)
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基于UWB的车身结构应变无线数据采集系统(硬件部分)设计(英文版)(任务书,开题报告,文献摘要,外文翻译,论文13000字,CAD图纸2张)
Abstract
Measuring the strain of the body structure of uavs in off-road environment is the basis to ensure the reliable work of uavs and to optimize the structure of uavs. The goal of this project is to design a body structure strain wireless data acquisition system based on ultra-wideband wireless communication technology UWB, which USES the strain gauge pasted on the body to measure the deformation of the car body in real time, and send it to the top position wirelessly to complete the data storage, display and processing.
The scope of knowledge involved in this topic: theoretical mechanics, material mechanics, computer technology, testing technology, electrical and electronics, software design and development, etc.
The main work contents of this project include:
1. Data collection and program demonstration;
2. Design circuit schematic diagram and PCB diagram, and make measurement nodes;
3. Completed the strain simulation of vehicle structure under different driving conditions, and designed the layout scheme of measuring points.
Key words: strain test; UWB; PCB. The finite element.
Catalogue
Chapter one Introduction 3
1.1 The introduction 3
1.2 UWB technology and its application 3
1.2.1 UWB overview 3
1.2.2 Technical features of UWB 4
1.2.3 main applications of UWB technology 6
1.2.3.1 Military applications 6
1.2.3.2 Civil applications 6
1.2.4 Development strategy and direction of UWB technology 8
1.3 Research content and chapter arrangement of this paper 9
The second chapter is the design of data acquisition and wireless transceiver node 11
2.1 overall framework of the system 11
2.2 strain measurement system based on Wheatstone bridge 11
2.2.1 definition and interpretation of Wheatstone bridge 12
2.2.2 calculation of resistance bridge correlation 13
2.3 Data acquisition system based on high-precision signal conditioning chip 14
2.4 Wireless transceiver system based on UWB 17
2.4.1 DW1000 chip overview 18
2.4.2 Architecture of DW1000 chip 18
2.5 Key chip selection of other chips 22
2.5.1 Microcontroller chip STM32F103C8T6 22
2.5.2 dual output linear voltage regulator chip XC6401 28
2.5.3 level conversion chip MAX3373 29
Chapter three Design of hardware circuit of data acquisition and wireless transceiver node 31
3.1 introduction to circuit design software Altium Designer 31
3.1.1 overview of Altium Designer 31
3.1.2 basic steps and methods of schematic diagram design 32
3.1.3 basic steps and methods of PCB diagram design 34
3.2 basic circuit schematic design 34
3.2.1 MCU and its peripheral circuits 34
3.2.1.1 MCU circuit design 34
3.2.1.2 crystal oscillator (clock) circuit 36
3.2.1.3 reset circuit 36
3.2.1.4 programming interface circuit 37
3.2.1.5 serial port and USB interface circuit 37
3.2.2 signal conditioning circuit 38
3.2.3 level switching circuit 39
3.2.4 wireless transceiver circuit 39
3.2.5 power circuit 40
3.3 circuit schematic diagram 41
3.4 PCB diagram of circuit 43
Chapter four finite element simulation analysis of trussed body 47
4.1 introduction to trussed body 47
4.2 introduction to finite element simulation software ABAQUS 48
4.3 truss body stiffness and modal analysis 50
4.3.1 determine the load under different driving conditions 51
4.3.2 body strength and stiffness simulation and result analysis 53
4.3.3 body mode simulation and result analysis 58
Chapter five work summary and outlook 62
Acknowledgement 65
Reference 66
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