scholarly journals Development of Railway Bridge Deflection Detection System Based on NI-cDAQ Inclinometer

2022 ◽  
Vol 2160 (1) ◽  
pp. 012068
Author(s):  
Mengdi Shi ◽  
Jun Ji ◽  
Wei Wang
Keyword(s):  
Data Acquisition ◽  
High Speed ◽  
Detection System ◽  
Field Tests ◽  
Field Application ◽  
Test Method ◽  
Railway Bridge ◽  
Development Environment ◽  
Long Time ◽  
Analysis System

Abstract Aiming at the limitation of the traditional deflection test method by the field application of railway bridge inspection, the paper develops a data acquisition and analysis system for bridge deflection inspection. The system is based on NI-cDAQ series acquisition equipment and the LabVIEW programming software development environment. Through the industrial Modbus bus protocol, it is possible to integrate the inclinometer, data acquisition equipment and other hardware acquisition equipment with the application software through the computer, and establish a complete set of practical instrument equipment and dynamic deflection detection process to achieve high speed, high precision and multi-channel acquisition Bridge deflection information. Combined with field tests for verification, the results show that the real-time collection and transmission of various parameters of the system can run for a long time under complex field conditions, with stable work and reliable data.

Study on the Cement-Improved Loess under the Vibratory Load by Dynamic Tests

2013 ◽  
Vol 838-841 ◽  
pp. 1302-1308 ◽  
Author(s):  
Jia Ding Wang ◽  
Shu Jun Peng ◽  
Wan Li Xie
Keyword(s):  
Elastic Modulus ◽  
Dynamic Characteristics ◽  
High Speed ◽  
Dynamic Deformation ◽  
Damping Ratio ◽  
Test Method ◽  
Dynamic Elastic Modulus ◽  
Dynamic Tests ◽  
Long Time ◽  
Orthogonal Test Method

In this paper based on the foundation construction of Datong Xian high-speed railway, a large number of test samples have been taken. The order and contribution rate of every experiment factor like cement commingle ratio, depths, water dipping conditions, compacting factor and vibration frequency on the dynamic characteristics of cement-improved loess such as dynamic elastic modulus, dynamic deformation, damping ratio by dynamic triaxial test, which orthogonal test method has been applied to. The dynamic load was calculated according to the train vibration attenuation rule of different depth. The dynamic characteristics of cement-improved loess such as dynamic deformation, dynamic elastic modulus, damping ratio were got form the dynamic tests of long time and large number of cycles. The results showed that with the increase of cement ratio, the dynamic characteristics of cement-improved loess are more better, there is no optimal ratio of cement.

scholarly journals Design of a system solution that modernizes legacy supervisory control and data acquisition systems as an early detection system

2018 ◽  
Vol 51 (7-8) ◽  
pp. 205-212 ◽  
Author(s):  
Beşir Demir ◽  
Ahmet Tumay ◽  
Mehmet Efe Ozbek ◽  
Enver Cavus
Keyword(s):  
Early Detection ◽  
Data Acquisition ◽  
Supervisory Control ◽  
High Speed ◽  
Data Transfer ◽  
Detection System ◽  
Data Acquisition Systems ◽  
Gateway System ◽  
System Solution ◽  
The Impact

Background In industrial disasters, early detection of problems and crisis management are critical for saving the lives of people and reducing the impact of disasters. Purpose In this study, we design a special gateway system that bridges the gap between different communication protocols and enables legacy supervisory control and data acquisition systems to function early detection systems for potential industrial disasters. Methods The system uses a new queue mechanism to substantially improve the problem of data loss found in conventional supervisory control and data acquisition systems and utilizes identification (ID) prioritization to enable early detection of problems. The proposed system is implemented and tested on a Linux-based, 3G-capable Modbus gateway system. Modbus is used as the communication protocol and 3G technology is utilized to provide high-speed wireless data transfer components. The Modbus gateway device uses an ARM-based EP9302 processor and has digital input/output, relay outputs, and RS485 outputs. Conclusion This study is significant as it is the first work to show the application of the priority query execution method for Modbus gateway devices.

scholarly journals Comparison of Signal-Analysis Techniques for Seismic Detection System for High-Speed Train Data: Effect of Bridge Structures

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6805
Author(s):  
Mintaek Yoo ◽  
Jae Sang Moon
Keyword(s):  
High Speed ◽  
Detection System ◽  
Warning System ◽  
Data Sets ◽  
Acceleration Data ◽  
Bridge Structures ◽  
High Speed Trains ◽  
Analysis System ◽  
Data Analysis System ◽  
Short Time

This study evaluated the earthquake warning system for high-speed trains using onboard accelerometers instead of expensive seismometers. Onboard accelerometers measure the train data additional to the earthquake acceleration. The measured earthquake acceleration could also be modified by railroad-supporting bridges. To develop the data analysis system, the virtual onboard data sets are synthesized using the train acceleration data and earthquake data. Not only the earthquake acceleration data but also the earthquake responses of bridges are used for the virtual onboard data synthesis. For the analysis of synthesized data, the short-time Fourier Transform (STFT), the wavelet transform (WT), and Wigner–Ville Distribution (WVD) methods have been compared. Results show that WVD provides the best detection performance while the computational costs are large.

scholarly journals The Analysis of Shuttlecock Velocity Based on the Field Test Method of The Home Industry Products in Indonesia

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Ucup Yusup ◽  
Agus Rusdiana
Keyword(s):  
Field Test ◽  
Initial Velocity ◽  
Field Tests ◽  
Test Method ◽  
Final Velocity ◽  
3D Motion Analysis ◽  
Analysis System ◽  
Main Components ◽  
Home Industries

One of the main components of badminton games is shuttlecock. The shuttlecock home industries in Indonesia mainly employ for about 20-40 freelance workers. The workers in the home industries are able to produce 500-100 slops of shuttlecock daily. The guarantee of the shuttlecock quality produced by home industries, either through the laboratory tests or field tests, is rarely conducted formally. Therefore, we are interested in conducting an academic study on the velocity of the shuttlecocks produced by the workers of the shuttlecock home industries that have been distributed in Indonesia markets. There are eight widely distributed shuttlecock brands produced by the home industries in Indonesia, including Taiso, Saporate, Netra, Arjuna, Kuda Mas, Rivals, Purnama, and Spin. The purpose of this study was to examine the quality of aerodynamics rate of the shuttlecock produced by home industries by comparing the rate of motion of the shuttlecock in different distances started from the initial velocity to the final velocity when the shuttlecocks impact to the ground. The method used in this study was a descriptive qualitative study. The instruments used were three high resolution handy cams, a set of calibration, and the 3D motion analysis system software (Frame Diaz IV). The result of this study showed that the average velocity of the shuttlecock, started from the initial velocity to the final velocity with 5 meter distance, reached 85.0 m/s., while the average final velocity reached 29.8m/s at 5 meter distance. From all of the shuttlecock types tested in the field test for their velocity, it was found that the Spin brand moved with a high velocity with 12.8% of percentage. Meanwhile, the lowest velocity of the shuttlecock was found in the Taiso brand where the percentage was 15.3% in 9 meter and12 meter distances. The study concludes that the average of various shuttlecock brands’ speeds are in the normal category except for the Taiso and Spin brands.

Based on Inclinometer to Measure Dynamic Deflection of High-Speed Railway Bridge

2013 ◽  
Vol 405-408 ◽  
pp. 3019-3026 ◽  
Author(s):  
Xian Long He ◽  
Li Zhen Zhao
Keyword(s):  
High Speed ◽  
Detection System ◽  
Good Method ◽  
Railway Bridge ◽  
High Speed Train ◽  
Loading Test ◽  
High Speed Railway ◽  
Deflection Measurement ◽  
Measurement Results ◽  
Beam Bridge

The dynamic deflection measurement is an important component to the bridge loading test of high-speed railway bridge. Using inclinometers to test the Dynamic deflection is a good method for High-Speed Railway bridge deflection detection. In this paper, we develop a new inclinometer and a new theory to fast calculate deflection. It has been use to detect the dynamic deflection of Baishui River bridge on FuZhou-WenZhou High-Speed Railway when high speed train runs across at kinds of speed. Results indicate: comparing with the measurement results of photoelectric deflection detection system, all dynamic deflection measurement results of inclinometers are very accuracy. Their deflection curves are also similar. All results also show: Using our inclinometers to test High-Speed Railway bridge dynamic deflection can get precise results and can satisfy the dynamic deflection measurement request of high-speed railway bridge. Comparing with other methods of dynamic deflection measurement, this method is very easy to operate., do not need stop the traffic, and not affected by weather, and not need a static reference point, can measure the dynamic deflection of any beam bridge.

Research on FlexRay Bus Software Testing Technology Based on Data Acquisition and Analysis

2013 ◽  
Vol 321-324 ◽  
pp. 2807-2811
Author(s):  
Zhong Wei Chen ◽  
Xiao Xia Li ◽  
Song Yang Du ◽  
Liang Xiang
Keyword(s):  
Data Acquisition ◽  
Software Testing ◽  
Network Topology ◽  
Data Transmission ◽  
Interface Design ◽  
High Speed ◽  
Communication Protocol ◽  
High Reliability ◽  
Testing Technology ◽  
Analysis System

This paper mainly introduces FlexRay, a high speed, real-time and high reliability bus technology, and researches network topology structure and network communication protocol of FlexRay bus. Then this paper points out that the premise of analyzing FlexRay protocol is catching the bus data transmission, and designs a data acquisition and analysis system with FreeMASTER software and Tektronix TDS3012B digital phosphor oscilloscope. In order to verify the accuracy of the software FlexRay interface design, this paper also describes the analysis and verification procedure of the timing sequence of FlexRay bus. Lastly, this paper reminds of the application prospect of this system.

Development of High-Speed Transmission Error Dynamic Detection System Based on NIOS-II and USB

2013 ◽  
Vol 325-326 ◽  
pp. 883-886
Author(s):  
Yong Zheng ◽  
Yan Chen ◽  
Ge Zhu
Keyword(s):  
Data Acquisition ◽  
Data Transmission ◽  
High Speed ◽  
Detection System ◽  
Transmission Error ◽  
Nios Ii ◽  
Error Dynamic ◽  
Fpga Chip ◽  
Dynamic Detection

This paper proposes a high-speed transmission error (TE) dynamic detection system based on NIOS-II and USB. The detection system is in the realization of data acquisition on a FPGA chip, and sends the collected data to specialized data transmission circuit by the chip NIOS-II CPU core, the data transmission circuit composed of USB2.0 main control chip and FIFO chip, which can realize the two-direction communication between data acquisition circuit and PC, so as to realize the TE detection of high-speed side.

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