Research of Multi-Function Digital Compass Based on LSM303DLH

2013 ◽  
Vol 694-697 ◽  
pp. 2671-2674
Author(s):  
Heng Le ◽  
Guan Min Li
Keyword(s):  
User Interface ◽  
Data Fusion ◽  
High Speed ◽  
Computer Software ◽  
Battery Charging ◽  
C Language ◽  
Software Code ◽  
Upper Computer ◽  
Oled Display ◽  
Master Control

This paper presents a digital compass based on the chip LSM303DLH. This set of equipment has many advantages- smaller size, fewer cost, better display and friendlier user interface. The design of the hardware in the system consists of battery charging circuit based on TP4056, data acquisition circuit based on 3-axis accelerometer and 3-axis magnetometer LSM303DLH, OLED display circuit and master control circuit based on high speed MCU C8051F321. The software contains circuit control code, data fusion code and the upper computer software. In addition, the software code mainly depends on C language and C++. Finally, it accomplishes a kind of digital compass which can be powered by battery and uploads the data to the computer.

High-Speed Data Acquisition System Based on MP424 Acquisition Card

2013 ◽  
Vol 805-806 ◽  
pp. 1800-1804
Author(s):  
Tie Zao Yang ◽  
Chang Sheng Wang ◽  
Hai Jun Zhang ◽  
Hong Jie Zhao
Keyword(s):  
Data Acquisition ◽  
High Speed ◽  
Fuel Injection ◽  
Computer Software ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Labview Software ◽  
High Speed Data Acquisition ◽  
High Speed Data ◽  
Upper Computer

Mainly introduce MP424 high-speed data acquisition system and realize data acquisition, processing and display by way of compiling corresponding upper computer software with LabVIEW software. Acquire spark advance angle and fuel injection advance angle signals and compare with experimental model further. The results present that this data acquisition system is feasible.

Numerical modeling and analysis of the noncontacting impulse gas face seals

2018 ◽  
Vol 233 (8) ◽  
pp. 1139-1153
Author(s):  
Slawomir Blasiak
Keyword(s):  
Computer Software ◽  
Surface Modifications ◽  
Mechanical Seals ◽  
Face Surface ◽  
Modeling And Analysis ◽  
C Language ◽  
Model Studies ◽  
Face Seals ◽  
Radial Gap ◽  
The Impact

Noncontacting mechanical seals with various kinds of face surface modifications have established their position in the sealing technique. Over the last few years, a lot of works dedicated to the impact of various surface modifications on the dynamics of working rings have been created. This paper presents model studies regarding relatively unknown noncontacting impulse gas face seals. Here, a mathematical model of impulse gas face seals is developed including the nonlinear Reynolds equation and stator dynamics equations, which were solved simultaneously using numerical methods. An original computer software written in C + + language was developed. A number of numerical tests were conducted and the phenomena occurring in the radial gap during seal operation were analyzed. Final conclusions were drawn and several features were indicated characterizing impulse face seals. It should be emphasized that numerical research on this type of seals has not been published yet. The literature usually presents simplified models for the noncompressible medium, which can be solved with the use of analytical methods.

scholarly journals Novel analysis methods of dynamic properties for vehicle pantographs

2018 ◽  
Vol 180 ◽  
pp. 01005 ◽  
Author(s):  
Andrzej Wilk
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Simulation ◽  
High Speed ◽  
Dynamic Properties ◽  
Equations Of Motion ◽  
Computer Software ◽  
Fem Analysis ◽  
Electrical Energy ◽  
Modern Approach ◽  
Static And Dynamic Analysis

Transmission of electrical energy from a catenary system to traction units must be safe and reliable especially for high speed trains. Modern pantographs have to meet these requirements. Pantographs are subjected to several forces acting on their structural elements. These forces come from pantograph drive, inertia forces, aerodynamic effects, vibration of traction units etc. Modern approach to static and dynamic analysis should take into account: mass distribution of particular parts, physical properties of used materials, kinematic joints character at mechanical nodes, nonlinear parameters of kinematic joints, defining different parametric waveforms of forces and torques, and numerical dynamic simulation coupled with FEM calculations. In this work methods for the formulation of the governing equations of motion are presented. Some of these methods are more suitable for automated computer implementation. The novel computer methods recommended for static and dynamic analysis of pantographs are presented. Possibilities of dynamic analysis using CAD and CAE computer software are described. Original results are also presented. Conclusions related to dynamic properties of pantographs are included. Chapter 2 presents the methods used for formulation of the equation of pantograph motion. Chapter 3 is devoted to modelling of forces in multibody systems. In chapter 4 the selected computer tools for dynamic analysis are described. Chapter 5 shows the possibility of FEM analysis coupled with dynamic simulation. In chapter 6 the summary of this work is presented.

scholarly journals Research on Control Characteristics of Three Axis Paraleel Mechanism Based on PIC16f84A

2018 ◽  
Vol 14 ◽  
pp. 31-37
Author(s):  
Alvaro Ruddy Miranda Torrez ◽  
Xin Ji Gan
Keyword(s):  
Parallel Manipulator ◽  
Computer Software ◽  
C Language

This paper is about a parallel manipulator and how to controll it using a microcontroller and c++ language. Is explained wich devices are necesaries and why are the optimous for this project. Everything is followed by a simulation using a computer software.

scholarly journals Research on Application of Computer Recognition Technology in C Language Programming Modeling System

2021 ◽  
Vol 2083 (4) ◽  
pp. 042024
Author(s):  
Yikun Zhao
Keyword(s):  
Embedded System ◽  
Functional Module ◽  
Computer Software ◽  
Application Development ◽  
Project Organization ◽  
C Language ◽  
Framework Design ◽  
Language Technology ◽  
Research On Application ◽  
Development Engineering

Abstract C language programming is more and more favoured by the majority of technical personnel in embedded systems. The application of C language technology in computer software programming can effectively avoid unnecessary language logic problems, ensure the smooth progress of programming work and effectively improve the quality and efficiency of programming. For the development of C language embedded system, the programming ideas of system software are explained, the functional module division based on hierarchical design is given, and the realization methods of project organization, program framework design, module reuse design, etc. in the software development process are clarified. To solve the contradiction between C language flexibility and application development engineering. Although it is introduced for the ARM platform, the basic experience and algorithms are also suitable for software design on other embedded platforms.

scholarly journals Design of an on-line check device for safety valve

2018 ◽  
Vol 232 ◽  
pp. 01045
Author(s):  
Zhipeng Yan ◽  
Qing Li ◽  
Muda Jin ◽  
Haijian Zhong
Keyword(s):  
Hydraulic System ◽  
High Speed ◽  
Safety Valve ◽  
Motor Drive ◽  
Pressure Relief ◽  
Type Safety ◽  
On Line ◽  
Spring Type ◽  
Pulling Force ◽  
Upper Computer

As the main pressure relief component of the tanker, the spring type safety valve is indispensable for its periodic verification. An on-line check device is designed for the check problem of the safety valve. The check device is divided into mechanical structure, program control, motor drive, tension detection, displacement measurement, upper computer, etc., and the safety valve is verified according to the safety valve check principle and the determination method. Compared with the check device that uses the hydraulic system to provide the pulling force, the device has the advantages of simple operation, high speed, convenient disassembly, strong applicability, and the like, and has certain market application prospects.

scholarly journals Safety Monitoring of Expressway Construction Based on Multisource Data Fusion

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Dianliang Xiao ◽  
Tiantao Zhang ◽  
Xudong Zhou ◽  
Guangshun Zheng ◽  
Haoran Song
Keyword(s):  
Data Fusion ◽  
High Speed ◽  
Safety Monitoring ◽  
Advanced Technology ◽  
Computer Application ◽  
Design Parameters ◽  
Maximum Deviation ◽  
Silty Clay ◽  
Mountainous Terrain ◽  
Fusion Technology

China’s terrain is complex, both plain, microhill (heavy-hill) and mountainous terrain; the hidden dangers of highway construction are prominent. Construction site management, production safety management, and construction personnel management are difficult, and it is necessary to borrow advanced technology to establish information, and it is necessary to borrow advanced technology to establish information system to realize the visualization of safety monitoring. In the construction of highways, mountainous terrain is often complicated due to complex terrain, high mountains, and deep valleys. Excavation of the mountain mass is required to form high and steep slopes. For successful projects, safety monitoring is particularly important. Multisource data fusion is one of the computer application technologies. It is an information processing technology that is automatically analyzed and synthesized under certain criteria to complete the required decision-making and evaluation tasks. This paper analyzes high-speed data in the context of multisource data fusion. Study on highway slope construction safety monitoring. BP neural network fusion technology of multisource data fusion technology is used. A high-speed breccia-bearing silty clay slope is taken as the research object. The feedback information about the deployed monitoring system is fully used in the slope design and construction. The construction design parameters are reversed to predict the stability of the slope and ensure the safety of construction and operation of similar slopes of the entire expressway. The research in this paper finds that the maximum deviation between the slope displacement value and the measured value obtained by the slope monitoring based on multisource data fusion in this paper is 7.53%, which is less than 10%, which verifies the feasibility of the method in this paper. The research methods and ideas of this paper can also provide a reference for similar engineering research.

Design of Self-Tuning Fuzzy Control and Fault Tolerant Error Control Coding Based on Graphic User Interface for Smart Hybrid Powerpack

2014 ◽  
Vol 574 ◽  
pp. 528-533
Author(s):  
Jek Wang Choi ◽  
Lei Lei Shi ◽  
Li Jun Wu ◽  
Hyeon Woo Kim ◽  
Iksu Choi ◽  
...  
Keyword(s):  
User Interface ◽  
Fuzzy Control ◽  
Intelligent Control ◽  
High Speed ◽  
Error Control ◽  
Fault Tolerant ◽  
Graphic User Interface ◽  
Error Control Coding ◽  
Self Tuning ◽  
Network Fault

The Smart Hybrid Powerpack (SHP) is an electro-hydraulic system which combines the system of Electro Hydraulic Actuator (EHA) and advanced technologies such as network fault tolerance and intelligent control. EHA system has been famous in the industry because that the EHA acts as a power-shift which shifts the power from high-speed electric motor to the high-force of hydraulic cylinder by bi-directional piston pump. If errors in the plant and network occur in the SHP, the system will cause serious malfunctions. To reduce plant noises and network errors, this paper shows the intelligent control method comparing Self-tuning fuzzy with fuzzy control and network fault tolerant error control coding in the SHP. In the intelligent control part, the simulation result shows good performance to reduce plant noises by the self-tuning fuzzy than fuzzy control. In the network fault tolerant error control coding part, proposed scheme also shows good performance by CRC code and Reed-Solomon (R-S) code in two channel (CRT) method than one channel only. We developed LabVIEW Graphic User Interface (GUI) to show these simulation results. Using this GUI, we can save time to experiment and get benefit of guidance to make real program.

One-Bit DAC Application Design in Audio Signal Processing

2014 ◽  
Vol 971-973 ◽  
pp. 1676-1679
Author(s):  
Zhong Yuan Liu
Keyword(s):  
Computer Software ◽  
Audio Signal ◽  
Audio Signal Processing ◽  
Output Section ◽  
Overall Design ◽  
Output Quality ◽  
Mp3 Players ◽  
Fpga Chip ◽  
Audio Output ◽  
Upper Computer

To achieve better MP3 audio output quality, this thesis makes research of D/A chips that most MP3 players to ultimately make the decision of using one-bit DAC as the way of DAC and audio output. And this overall design scheme is given out as well. Decoding MP3 files through upper computer software of PC and transmitting data to one-bit DAC module through serial ports. DAC is realized in FPGA chip through Verilog Language. And high shelf is used in the output section of one-bit DAC module. Finally, analyzes the output audio frequency of one-bit DAC module, surveys general performance of the overall play system and DAC module.[1][2]

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