Advances in Precision Instruments and Optical Engineering: Proceedings of the International Conference on Precision Instruments and Optical Engineering, 2021 (Springer Proceedings in Physics, 270)

This book highlights the new technologies and applications presented at the 2021 International Conference on Precision Instruments and Optical Engineering held in Chengdu, China from 25 to 27 August 2021. The conference aimed to provide a platform for researchers and professionals to share research findings, discuss cutting-edge technologies, promote collaborations and fuel the industrial transition of new technologies. The invited and contributed papers covered recent developments in optoelectronic devices, nanophotonic research, optoelectronic materials, precision instruments, intelligent instruments, laser technology, optical spectroscopy and other optical engineering topics. The book is intended for researchers, engineers and advanced students interested in precision instruments and optical engineering and their applications in diverse fields. Committee Members Preface Contents Contributors Part I Sensor and Radar Signal Monitoring Technology 1 High-Speed Short-Stroke Displacement Calibration Method Based on Pull-Wire Sensor 1.1 Preface 1.2 The Overall Scheme of Dynamic Calibration 1.3 Implementation Method of High-Speed Short-Stroke Displacement 1.3.1 High-speed Motion Actuator 1.3.2 Movement Acceleration Mechanism 1.3.3 Mechatronics Composite Separation Mechanism 1.4 Conclusion References 2 Fine Guidance Sensor Attitude Determination System of the High-Accuracy Satellite Mission 2.1 Introduction 2.2 FGS Overview and Attitude Accuracy Requirements 2.2.1 Hubble Mission 2.2.2 Kepler Mission 2.2.3 TESS Mission 2.2.4 SVOM Mission 2.3 Mission High Stability Pointing Mode 2.3.1 Sensor Requirements 2.3.2 Data fusion 2.3.3 System Test Result 2.4 Conclusions References 3 Research on OFDR Pressure Sensor Based on PDMS 3.1 Introduction 3.2 OFDR Optical Fiber Sensing System 3.2.1 Measurement System Structure 3.2.2 Pressure sensor 3.2.3 Pressure Test Bench 3.3 Experimental Results 3.4 Conclusions References 4 Space-Domain Fiber Cavity Ring-Down Magnetic Field Sensor Using D-shaped Fiber Coated with Magnetic Fluid 4.1 Introduction 4.2 Operation Principle and Experimental Setup 4.3 Experimental Results and Discussion 4.4 Conclusion References 5 Research on Unsaturated Magnetization MFL Detection of Gouge in Oil and Gas Pipeline 5.1 Introduction 5.2 Principle of MFL 5.3 Simulation 5.3.1 Simulation Model 5.3.2 Model Parameters 5.3.3 Simulation Results 5.4 Experiment 5.4.1 The Pipeline Specimen of Gouge 5.4.2 Magnetic Flux Leakage Probe and Device 5.5 Conclusion References 6 The Infusion Monitor System Based on Single-Chip Micyoco 6.1 Introduction 6.2 Product Design 6.3 System Composition 6.4 Physical Debugging 6.5 Conclusion References 7 Density Prediction Model and Characterization Method of Density Variation Rate in Finished Tobacco Box Based on Microwave Signal Value 7.1 Introduction 7.2 Materials and Methods 7.2.1 Instruments, Equipment, and Materials 7.2.2 Sample Preparation and Methods 7.3 Results and Analysis 7.3.1 Repeatability of Microwave Signal Value in Tobacco Density Detection 7.3.2 Correlation Between the Microwave Signal Value and the Density Value Detected by the Nine-point Method and X-ray Density Value 7.3.3 Establishment of Box Density Prediction Model Based on Microwave Signal Value 7.3.4 Characterization Method of Tobacco Density Variation Rate in Box Based on Microwave Signal Value 7.4 Conclusion References 8 Research on Fault Detection Technology of Primary and Secondary Circuit of Switchgear 8.1 Introduction 8.2 Research on Switchgear Fault 8.2.1 Primary Faults 8.2.2 Secondary Faults 8.3 Design of Detection System Structure 8.4 Research on Detection Technology 8.4.1 Fault Detection of the Secondary Circuit 8.4.2 Protection Setting Mechanism 8.4.3 Prevent CT Open Circuit and PT Short Circuit 8.5 Conclusion References 9 Research on FPGA Hardware Acceleration for Real-Time Detection of Mobile Phone Lens Defects 9.1 Introduction 9.2 Material and Methods 9.2.1 Selection of Network Model 9.2.2 YOLOv2 Network Structure 9.2.3 Accelerator Framework 9.2.4 Integrated Convolutional Neural Network IP 9.2.5 Production and Training of Defect Lens Data Set 9.2.6 Transplantation of YOLOv2 9.3 Results 9.3.1 Hardware and Software Platform Environment 9.3.2 Real-Time Detection 9.3.3 Hardware Resource Consumption 9.3.4 Detection Power Consumption 9.3.5 Detection Accuracy 9.4 Discussion 9.5 Conclusions References 10 An Improved Phase Unwrapping Method Based on Geometric Constraints 10.1 Introduction 10.2 Measuring Depth Limit Based on Geometric Constraints 10.3 Algorithm 10.3.1 Modulation Intensity-Based Sort Method 10.4 Experiment 10.4.1 Simulation Experiment 10.4.2 Measurement Experiment 10.5 Conclusion References 11 Research on the Influence of Electromagnetic Interference Test Signal on Networked Vehicle Detection Equipment 11.1 Introduction 11.2 Electromagnetic Compatibility of Networked Vehicles 11.3 Test Scheme of Anti-interference Signal Received by Detection Equipment 11.4 Analysis of Test Results of Anti-interference Signals Received by Test Equipment 11.5 Conclusion References Part II Intelligent Precision Instrument and Robot Technology 12 Geometric Error Modeling of a Special NC Process Device for Precision Two-Dimensional Optical Drum 12.1 Introduction 12.2 Overall Structure of the Device 12.3 Error Modeling of the Device 12.3.1 Swaying Errors Analysis of the Horizontal Axis 12.3.2 Swaying Errors Analysis of the Vertical Axis 12.3.3 Other Errors Analysis of the Two Shafts 12.4 Error Prediction of the Device 12.5 Test of the Model 12.6 Conclusions References 13 Analysis and Control of Measurement Accuracy of Super High-Rise Building Engineering 13.1 Introduction 13.2 Super High-Rise Building Project Implementation Planning 13.2.1 Super High-Rise Building Construction Organization 13.2.2 Construction Schedule of Super High-Rise Buildings 13.2.3 The Construction Layout and Evaluation Method of Super High-Rise Buildings 13.3 Dynamic Deformation Monitoring of Super High-Rise Building Engineering Structure 13.3.1 Fully Automatic Robot Measurement 13.3.2 GPS Monitoring Analysis 13.3.3 Close-Up Photogrammetry 13.4 Conclusion References 14 Multimedia Monitoring System for Gas Pressure Regulating Station 14.1 Introduction 14.2 System Architecture Design 14.2.1 System Components 14.2.2 Design of the Communication Network 14.2.3 How the System Works 14.3 System Function Design 14.3.1 Data Acquisition 14.3.2 Data Storage 14.3.3 Linkage of Electronic Map 14.3.4 System Alarm 14.3.5 Trend Curve 14.3.6 Smart Report 14.3.7 Hierarchical Management 14.3.8 System Log 14.3.9 Video Surveillance 14.3.10 Video Display 14.3.11 Video Recording Function 14.3.12 Motion Detection Pre-trigger Recording Mode 14.3.13 Intelligent Retrieval and Playback 14.3.14 PTZ Camera Control 14.3.15 Linkage Control 14.4 Conclusion References 15 Two-Position Initial Alignment Method Under Large Misalignment Angle Based on Adaptive Cubature Kalman Filter 15.1 Introduction 15.2 The Nonlinear Initial Alignment Error Model 15.2.1 Attitude Error Propagation Equation 15.2.2 Velocity Error Propagation Equation 15.2.3 Inertial Device Error Propagation Equation 15.3 The Introduction of CKF 15.4 The Derivation of ACKF 15.5 Results and Analysis 15.6 Conclusion References 16 Rapid Detection and Measurement Method of Pixel-Level Crack Size Based on Convolutional Neural Network 16.1 Introduction 16.2 Principle of YOLOv3 Algorithm 16.3 Principle of Mask R-CNN Algorithm 16.4 Two-Stage Decision Method 16.5 Methods Application and Results 16.6 Conclusions References 17 Uncertainty Analysis of Efficiency Test of Drive Motor System for Electric Vehicle 17.1 Introduction 17.2 Drive Motor System Efficiency Test Introduction 17.2.1 Introduction to the Test Bench 17.2.2 Test Conditions and Requirements 17.2.3 Recording of Test Data 17.3 Sources and Mathematical Models of Uncertainty 17.3.1 Source Factors of System Efficiency Uncertainty 17.3.2 Mathematical Model of System Efficiency 17.4 Calculation of Synthetic Standard Uncertainty 17.5 Calculation of Standard Uncertainty of Each Component 17.5.1 Test Data 17.5.2 Class A Uncertainty 17.5.3 Influence of Class B Uncertainty 17.5.4 Synthesize the Standard Uncertainty Component 17.6 Synthesis Uncertainty Analysis and Extended Uncertainty 17.6.1 Sensitivity Factor 17.6.2 Composite Uncertainty 17.6.3 Extended Uncertainty 17.6.4 Analysis of Factors Affecting Uncertainty 17.7 Summary References 18 Fluorescence Characteristics of DAST in Methanol Solutions 18.1 Introduction 18.2 Experiments 18.3 Results and Discussion 18.4 Conclusions References 19 Research on Deflection Quality Assessment of Assembly Car Body Based on Deflection Measurement and Improved Principal Component Analysis Method 19.1 Introduction 19.2 Design for Quality Assessment of Assembly Car Body 19.3 Assessment Method of Deflection Quality for Car Body 19.3.1 Obtainment of the Deflection Parameters of Each Control Point 19.3.2 Improved Principal Component Analysis Method 19.4 Example of Deflection Quality Assessment of Assembly Vehicle Body 19.5 Conclusion References 20 Random-Optimal Differential Evolution Neural Network Model for Inverse Calculation of Demolition Robot 20.1 Introduction 20.2 Inverse Calculation Neural Network Modeling of Laser-Guided Positioning of Demolition Manipulator 20.2.1 Laser-Guided Autonomous Positioning Control System of Demolition Manipulator 20.2.2 Basic Principle of Inverse Calculation of Demolition Robot 20.2.3 ANN Modeling for Inverse Calculation of Demolition Robot 20.3 Differential Evolution Neural Network 20.3.1 Differential Evolution 20.3.2 Principles of Differential Evolution Neural Network 20.3.3 Analysis of Convergence Process of Differential Evolution 20.3.4 Random-Optimal Differential Evolution Neural Networks 20.4 Algorithm Simulation Experiment of Random-Optimal Differential Evolution Inverse Computational Neural Network 20.4.1 The Training Samples of Inverse Calculation ANN 20.4.2 Comparative Analysis of the Results of Optimizing Inverse Calculation ANN 20.4.3 Verification of Calculation Results of Inverse Calculation ANN 20.5 Conclusion References 21 Analysis and Performance Evaluation on Mechanical Property of Nuclear Pump Liquid Annular Seals 21.1 Introduction 21.2 Analysis Element 21.3 Calculation and Simulation 21.3.1 Influence of the Annular Sealing Radius 21.3.2 Influence of the Annular Sealing Fluid Viscosity 21.3.3 Influence of the Annular Sealing Rotor Speed 21.4 Conclusion References 22 Research on Eddy Current Inspection Test for Defects of Aluminum Alloy ∏-Type Components in High-Speed Train Car Body 22.1 Introduction 22.2 Principle of Multi-channel Eddy Current Testing 22.3 Experiment Method 22.3.1 Test Materials 22.3.2 Design and Manufacture of Probe 22.3.3 Test Verification 22.4 Testing and Research 22.4.1 The Effect of Lift-Off Height on Detection Signal 22.4.2 Engineering Application 22.5 Conclusion References 23 A Simple Fire Extinguishing Demonstration System Based on Single-Chip Micyoco 23.1 Introduction 23.2 Product Design 23.3 System Composition 23.4 Physical Debugging 23.5 Conclusion References 24 LC–MS/MS Determination of 25-Hydroxyvitamin D in Human Serum Based on Covalent Organic Frameworks Magnetic Solid-Phase Extraction Materials 24.1 Introduction 24.2 Materials and Method 24.2.1 Synthesis of Dual-Porous Magnetic Covalent Organic Composite Materials 24.2.2 Synthesis of Dual-Porous Magnetic Covalent Organic Composite Materials 24.2.3 LC–MS/MS 24.3 Results and Discussion 24.3.1 Methodological Evaluation 24.3.2 Material Selection 24.3.3 Optimization of Eluent 24.4 Conclusion References 25 Research on Car Locking Device to Prevent the Car from Moving Accidentally 25.1 Introduction 25.2 Common Car Moving Protection Device 25.3 Structural Design 25.4 Working Principle 25.5 Conclusions References Part III Laser Technology and Infrared Thermal Imaging 26 Design of Optical System for Laser Dazzle Simulation Human Eye Test Target 26.1 Introduction 26.2 Selection of Human Eye Model 26.2.1 Authoritative Eye Models 26.2.2 The Gullstrand I Model Eye 26.3 Simulated Human Eye Target Design 26.3.1 Design Points 26.3.2 Optimal Design of Laser Dazzling Eye Model 26.3.3 Design Result Analysis 26.4 Comparison Test Results 26.5 Conclusion References 27 Effects of Cooperative Target on Laser Rangefinder’s Ranging Performance 27.1 Introduction 27.2 Theoretical Model of Ranging Ability 27.2.1 Theoretical Model of Detector Equivalent Noise Power 27.2.2 Theoretical Model of Laser Equivalent Noise Power 27.2.3 SNR Theoretical Model 27.3 Impact Analysis of Cooperative Targets on Laser Ranging 27.3.1 Influence of Cooperative Targets on Ranging Ability Under Different Atmospheric Visibility Conditions 27.3.2 Analysis of the Influence of Cooperative Targets on Ranging Ability Under Different Laser Beam Divergence Angles 27.3.3 Theoretical Calculation of Laser Emission Power Under the Condition of Configuring Cooperative Targets 27.4 Conclusion References 28 Analysis and Study of Target Ball Error Accuracy for the Laser Tracker 28.1 Introduction 28.2 Laser Tracker Measuring System 28.3 Error Factors Affecting Measurement 28.4 Error Analysis Method of Measuring Target Ball 28.5 Example Analysis of Measuring Target Ball Error 28.5.1 1.5-Inch Metal Target Ball Test 28.5.2 1.5-Inch Glass Target Ball Experiment 28.5.3 0.5” Glass Target Ball Experiment 28.6 Conclusions References 29 Drowning Person Target Intelligent Recognition Method Based on Fusion of Visible Light and Infrared Thermal Imaging 29.1 Introduction 29.2 Image Acquisition and Registration 29.2.1 Image Acquisition 29.2.2 Image Registration 29.3 Image Fusion 29.3.1 Converged Network 29.3.2 Loss Function 29.4 Detection of Personnel Falling into the Water 29.4.1 Detection Network 29.4.2 Loss Function 29.5 Detection Fusion Reverse Guidance 29.6 Conclusion References 30 Integrated Laser In Situ Auxiliary Device 30.1 Introduction 30.2 The Overall Program 30.2.1 Overall Program Design 30.2.2 Tool Holder Structure Design 30.2.3 Laser Transmission Structure Design 30.3 Laser Optical Path Design 30.4 Conclusion References 31 An In-Motion Alignment Method for Laser Doppler Velocimeter-Aided Strapdown Inertial Navigation System 31.1 Introduction 31.2 In-Motion Alignment for SINS/LDV 31.2.1 Process Model 31.2.2 Measurement Model 31.3 Proposed Robust Square-Root Unscented Quaternion Estimator Algorithm 31.3.1 Time Update 31.3.2 Measurement Update 31.3.3 Attitude Update 31.4 Vehicle-Mounted Field Test 31.5 Conclusion References 32 Imaging and Focusing Through Scattering Medium Based on Reflection Matrix Optical Coherence Tomography 32.1 Introduction 32.2 Methods 32.2.1 Experimental Setup 32.2.2 Time-Reversal Operation for Imaging Through Scattering Medium 32.2.3 Wavefront Shaping for Focusing Light Through Scattering Medium 32.3 Results and Discussion 32.3.1 Imaging at the Single Scattering Region 32.3.2 Imaging at Multiple Scattering Regions 32.3.3 Imaging Through a Thick Biological Sample 32.3.4 High-Speed Wavefront Shaping 32.4 Conclusions References 33 Application of Terahertz Spectroscopy in the Detection of Carbohydrate Isomers 33.1 Introduction 33.2 Experiments and Theory 33.3 Results and Discussions 33.4 Conclusion References 34 Detection of Gas Raman Spectra Based on Double-Cladding Fiber Laser 34.1 Introduction 34.2 Basic Theory and Simulation of Double-Clad Fiber Laser 34.2.1 Theoretical Model of Double-Clad Fiber Laser 34.2.2 Rate Equation of Double-Clad Fiber Laser 34.2.3 Numerical Simulation of a Double-Clad Fiber Laser 34.3 Experiment and Result Analysis of Fiber Laser 34.3.1 Experimental Setup 34.3.2 Test and Analysis of Experimental Equipment 34.4 Conclusions References 35 All-Fiber-Based Miniaturized Transportable Ultra-stable Laser at 1550 nm 35.1 Introduction 35.2 Material and Methods 35.3 Results and Discussion 35.4 Conclusions References 36 Research on Dynamic Condition Test of Power Battery Simulation Based on Principal Component Analysis 36.1 Introduction 36.2 Battery Simulation Data Selection and Segmentation 36.2.1 Battery Simulation Data Selection 36.2.2 Segmentation 36.2.3 Feature Parameter Construction 36.3 Principal Component Analysis and Battery Equivalent Circuit Model Construction 36.4 Discussion 36.5 Conclusion References Part IV Optical Remote Sensing and Satellite Image Positioning 37 Research on the Application of UAV Remote Sensing Technology in Surveying and Mapping Engineering Survey 37.1 Introduction 37.2 Construction of Surveying and Mapping Engineering Survey Model Based on UAV Remote Sensing Technology 37.2.1 UAV Remote Sensing Image Acquisition 37.2.2 Design of Surveying and Mapping Engineering Survey Model 37.3 Application and Analysis of Surveying and Mapping Engineering Survey Model Based on UAV Remote Sensing Technology 37.3.1 UAV Remote Sensing Image Classification Data Processing 37.3.2 Example Application and Analysis of Surveying and Mapping Engineering Survey Model 37.4 Conclusion References 38 Analysis of Influence Factors on Image Quality of Lensless Fourier Transform Hologram Reconstruction 38.1 Introduction 38.2 Model 38.2.1 Lensless Fourier Transform Hologram Recording Optical Path 38.2.2 Influence of Object Light and Reference Light Intensity Ratio on Imaging Quality 38.2.3 Influence of the Position Relationship Between the Object and the Point Light Source on the Imaging Quality 38.2.4 Influence of Hologram Size on Imaging Quality 38.3 Experiment and Discussion 38.3.1 Experiment 38.3.2 Analysis and Discussion 38.4 Conclusions References 39 Error Characteristic Analysis of Tri-axis Rotating Optical Gyro Inertial Navigation System Based on Inertial Frame 39.1 Introduction 39.2 Design of Tri-axis Rotation Modulation Scheme 39.2.1 Error Propagation Equations 39.2.2 Design of Tri-axis Rotation Scheme 39.3 Analysis of Error Characteristics 39.4 Verification of Simulations and Experiments 39.4.1 Simulation Verification 39.4.2 Experiment Verification 39.5 Conclusion References 40 Calculation of the Photon Speed and Photon Energy Discussions 40.1 Introduction 40.2 Photon Speed Calculation 40.2.1 Negative Photon Velocity 40.2.2 Positive Photon Velocity 40.2.3 Compton Effect and Derivation of the Compton Shift 40.2.4 Scattering and Speed Shift of Negative Photons 40.3 Photon Reflection and Refraction 40.3.1 Photon Reflection 40.3.2 Photon Refraction 40.4 Photon Wave Phenomenon 40.5 Conclusion References 41 Research on Simulation of Space-Based Optical Space Debris Images 41.1 Introduction 41.2 Simulation Structure and Process Design 41.2.1 Modeling of Spatial Target Motion Characteristics 41.2.2 Modeling of Optical Properties of Space Debris and Background Stars 41.2.3 CCD Imaging Modeling 41.2.4 Smear Tailing Phenomenon 41.3 Analysis of Simulation Results 41.4 Conclusion References 42 Study on Image Processing of Bridge Cable Surface Defect Detection System 42.1 Introduction 42.2 The Hardware System of Detection 42.2.1 Image Sensor Configuration 42.2.2 Data Transmission System 42.2.3 Defect Location System 42.3 Defect Image Preprocessing 42.3.1 Image Mosaic Based on SIFT Algorithm 42.3.2 Grayscale Transformation 42.3.3 Threshold Segmentation 42.4 Noise Reduction Processing 42.4.1 Image Noise 42.4.2 Median Filtering 42.5 Conclusion References 43 Study on the Structural Performance Degradation of Rigid Airfield Pavements Using HWD 43.1 Introduction 43.2 Background 43.3 Detection Scheme and Evaluation Method 43.3.1 Detection Scheme 43.3.2 Detection Equipment 43.3.3 The Evaluation of Pavement Structural Performance 43.4 Detection Results and Discussion 43.4.1 The Evaluation of the Pavement Structural Capacity 43.4.2 The Evaluation of the Load Transfer Capacity at Joint 43.4.3 The Evaluation of the Voids Beneath Rigid Pavement Slab 43.5 Conclusions References 44 Research on Integrated Navigation and Positioning Technology of Inertial Navigation System and Odometer Based on Factor Graph 44.1 Introduction 44.2 Basic Theory of Factor Graph Navigation 44.3 IMU and OD Integrated Navigation Factor Graph Modeling 44.3.1 Integrated Navigation Framework Based on Factor Graph 44.3.2 IMU Factor Graph Model 44.3.3 OD Factor Graph Model 44.3.4 Integrated Navigation Algorithm Based on Factor Graph 44.4 Results and Discussion 44.5 Conclusions References Part V Optical Communication Electronics and Data Model Recognition 45 Research on Influencing Factors and Evaluation Accuracy of Diffuse Reflector Deception Airspace 45.1 Introduction 45.2 Laser Energy Transfer Model 45.3 Analysis of Influencing Factors in Interference Airspace 45.3.1 Influence of Jamming Laser Energy on Interference Airspace 45.3.2 Influence of Meteorological Conditions on Interference Airspace 45.3.3 Influence of Inclination Angle of the Diffuse Reflector on Interference Airspace 45.3.4 Influence of Relative Azimuth on Interference Airspace 45.4 Error Analysis of Diffuse Reflector Interference Airspace 45.4.1 Interference Airspace Evaluation Model 45.4.2 The Error Analysis 45.5 Conclusion References 46 A Novel Type-Sensitive PageRank Algorithm for Importance Ranking of Heterogeneous Network Nodes 46.1 Introduction 46.2 Preliminaries 46.2.1 Heterogeneous Network Model 46.2.2 PageRank Algorithm 46.2.3 Substitution Rule 46.3 Model and Method 46.4 Experimental Analysis 46.4.1 Data Declaration 46.4.2 Experiment Process 46.5 Conclusions References 47 Trapping and Storing Photons via a Dynamically-Formed Nanocavity 47.1 Introduction 47.2 Model 47.3 Application 47.4 Conclusions References 48 Breaking the Delay-Bandwidth Limit in a Dynamically Tuned Nanocavity 48.1 Introduction 48.2 Theory 48.3 Application 48.4 Conclusions References 49 Investigation About Large Capacity Optical Transmission System Based on Wavelength Division Multiplexing and Multiplexing Division Multiplexing 49.1 Introduction 49.2 Optical Frequency Comb-Based WDM System 49.2.1 Mode-Locked Laser Method 49.2.2 Microring Resonator Method 49.2.3 Cyclic Frequency Shift Method 49.2.4 Electro-Optical Modulator Method 49.2.5 Research Progress of WDM Transmission System Based on Optical Frequency Comb 49.3 Key Technologies of Mode Multiplexing and Demultiplexing 49.3.1 Free Space Optics Scheme 49.3.2 All-Fiber Scheme 49.3.3 Silicon-Based Integration Scheme 49.3.4 Research Progress of MDM Transmission System 49.4 Summary References 50 Manipulating Photons with a Dynamic Nanocavity 50.1 Introduction 50.2 Model and Analysis 50.3 Conclusions References 51 Pig Pose Recognition Method Based on Openpose 51.1 Introduction 51.2 Materials and Methods 51.2.1 Data Preparation 51.2.2 Pig Pose Estimation 51.2.3 Attitude Classification of Pigs 51.2.4 Evaluation Indicators 51.3 Results and Discussion 51.4 Conclusions References 52 Research on Data Management Technology of Construction Project Planning Completion Survey 52.1 Introduction 52.2 Completion Measurement and Model Construction of Architectural Engineering Planning 52.2.1 Evaluation Method of Construction Project Planning Completion Measurement Accuracy 52.2.2 Construction of the Construction Project Planning Completion Measurement Accuracy Evaluation Model 52.3 Construction Project Planning Completion Measurement Data Management Technology and Model Construction 52.3.1 Linear Scale Transformation Method 52.3.2 Non-Linear Scaling Method 52.4 Conclusion References 53 Research on Active Suspension System of Heavy Commercial Vehicle Controlled by PID Controller Based on Genetic Algorithm 53.1 Introduction 53.2 Basic Model Building 53.2.1 Establish a 1⁄4 Suspension Model 53.2.2 Build the Road Excitation Model 53.3 Establish the Genetic Algorithm PID Optimal Control Model 53.4 Establish System Model 53.4.1 Simulation Parameter Verification and Determination 53.4.2 Build SIMULINK System Model 53.5 Simulation Experiment and Result Analysis 53.6 Conclusion References 54 Health Condition Assessment of Hydraulic System Based on Cloud Model and Dempster–Shafer Evidence Theory 54.1 Introduction 54.2 Materials and Methods 54.2.1 Cloud Model Characteristics 54.2.2 D–S Evidence Theory 54.2.3 Improved D–S Evidence Theory Based on Cloud Model 54.3 Results and Discussion 54.3.1 Cloud Model Parameters Calculation 54.3.2 Calculation of the Basic Probability Assignment Matrix 54.3.3 Iteration of Homogeneous Sensor Merging Evidence 54.3.4 Experimental Results 54.4 Conclusions References 55 Design of CAN Communication Network for Tandem Hybrid Tractor 55.1 Introduction 55.2 Design of CAN Communication Network Structure 55.2.1 Node Definition 55.2.2 Analysis and Selection of Network Topology 55.2.3 Communication Network Design 55.3 Bus Network Communication Protocol 55.3.1 Message ID Design 55.3.2 Timing Design of Message 55.4 CAN Bus Communication Network System Test 55.4.1 Message Test 55.4.2 Communication Quality Test 55.4.3 Calculation of Bus Load Rate 55.5 Conclusions References 56 Research on Testability Fault Diagnosis Based on Deep Learning 56.1 Introduction 56.2 Testability Fault Diagnosis 56.2.1 Testability Analysis 56.2.2 Deep Residual Network Based on Fault Detection and Diagnosis Model 56.2.3 Deep Learning in Testability Analysis 56.3 Experiments 56.3.1 Datasets 56.3.2 Deep Fault Detection 56.3.3 Deep Learning in Testability Analysis 56.4 Conclusion References