Long Distance Pipeline Cathodic Protection Test System Based on GSM

2012 ◽  
Vol 490-495 ◽  
pp. 288-291
Author(s):  
Hu Li Wang ◽  
Hai Le Liu ◽  
Xian Jiang Yang ◽  
Feng Liu
Keyword(s):  
Test Data ◽  
Communication Technology ◽  
Cathodic Protection ◽  
Test System ◽  
Long Distance ◽  
Protection Method ◽  
Automatic Pipeline

With the mode of combining long distance pipeline cathodic protection method and GSM communication technology, the System realizes automatic pipeline testing and transmission of test data, and has succeeded in solving transmission of test data at the area without GSM signals.

Design of Road Test and Evaluation System for Vehicle Handling and Stability

2014 ◽  
Vol 505-506 ◽  
pp. 281-285
Author(s):  
Ming Qiu Gao ◽  
Run Qing Guo ◽  
Rong Liang Liang
Keyword(s):  
Data Processing ◽  
Test Data ◽  
Evaluation System ◽  
Test System ◽  
Stability Test ◽  
Road Test ◽  
Vehicle Handling ◽  
Test And Evaluation ◽  
Test Result

Vehicle handling and stability has effect on positive safety of automotive directly. Test system of handling and stability is built for its road test and the test variables signal can be acquired and stored synchronously. Based on MATLAB GUI, software is developed for the test data processing, so that the stored data is to be analyzed and handling and stability test result is given by the software automatically. Using the test system in paper, handling and stability road test of one domestic sedan is fulfilled and scored, which verifies the applicability of the test system and scoring software in paper.

Piston Ring-Cylinder Bore Friction Modeling in Mixed Lubrication Regime: Part II—Correlation With Bench Test Data

1999 ◽  
Vol 123 (1) ◽  
pp. 219-223 ◽  
Author(s):  
Ozgen Akalin ◽  
Golam M. Newaz
Keyword(s):  
Friction Coefficient ◽  
Test Data ◽  
Piston Ring ◽  
Normal Load ◽  
Test System ◽  
Mixed Lubrication ◽  
Contact Temperature ◽  
Bench Test ◽  
Crank Angle ◽  
Contact Width

A bench friction test system for piston ring and liner contact, which has high stroke length and large contact width has been used to verify the analytical mixed lubrication model presented in a companion paper (Part 1). This test system controls the speed, temperature and lubricant amount and records the friction force, loading force, crank angle signal and contact temperature data simultaneously. The effects of running speed, applied normal load, contact temperature and surface roughness on friction coefficient have been investigated for conventional cast-iron cylinder bores. Friction coefficient predictions are presented as a function of crank angle position and results are compared with bench test data. Analytical results correlated well with bench test results.

scholarly journals Peran Media Sosial Bagi Suami Istri dalam Menjalani Hubungan Pernikahan Jarak Jauh

AL-HUKAMA ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 359-479
Author(s):  
Maulidia Mulyani
Keyword(s):  
Social Media ◽  
Communication Technology ◽  
Technological Progress ◽  
Marital Relationship ◽  
Married Couples ◽  
Marital Relationships ◽  
Long Distance ◽  
Relationship Of ◽  
The Impact ◽  
The Relationship

In the present time the impact of technological progress can be felt in many aspects of life, including marriage. The progress of the development of communication technology has made it easy to communicate specifically for married couples who are undergoing long-distance marital relationships, so that the relationship is maintained and harmonious. Social media is now used as a tool for communication, for example WhatsApp, Line, Facebook, or Instagram. All of those media are used because of their speed in conveying messages, so that long-distance couples can still communicate well and quickly. In a marital relationship, of course, there are fulfillments of rights and obligations. These fulfillments can still be fulfilled through social media, but they are not as maximized as when dealing directly.

Study of Voice Communication System Based on FreeSWITCH

2021 ◽  
Vol 105 ◽  
pp. 331-338
Author(s):  
Fu Xing Qin ◽  
Li Zhang ◽  
Zhong Wang
Keyword(s):  
Communication Technology ◽  
Rapid Development ◽  
Secondary Development ◽  
Switching Network ◽  
Circuit Switching ◽  
Long Distance ◽  
Soft Switch ◽  
Voice Communication ◽  
Controlled Switching ◽  
Traditional Program

With the rapid development of communication technology, modern communication technology has been widely penetrated into modern national defense, science and technology, people's life and other fields, and has become a means to provide high-quality and seamless information communication between people and machines. With the rapid development of computer technology and the Internet, the traditional program-controlled switching technology has come to an end, and the soft-switch network based on IP technology and packet switching has gradually replaced the program-controlled switching network based on circuit switching and become the mainstream of today's communication network world. The rapid development of VOIP telephony reduces the cost of domestic and international long-distance telephony, benefiting consumers. Digital mobile communication expands channel capacity, improves service quality and promotes the rapid development of this industry. Based on the secondary development of the open source FreeSWITCH software, this paper develops a VOIP voice system based on IP technology to meet different user needs intelligently [1].

Determination of the auxiliary anode position via finite element method in impressed current cathodic protection

2019 ◽  
Vol 66 (4) ◽  
pp. 432-438
Author(s):  
Yingwei Liu ◽  
Zhongwu Zhang ◽  
Yang Zhang ◽  
Jianneng Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Cathodic Protection ◽  
Measurement Errors ◽  
Optimization Method ◽  
Content Type ◽  
Protection Method ◽  
Impressed Current ◽  
Impressed Current Cathodic Protection ◽  
Element Method

Purpose It is a challenge in the design to determine the feasible anode position and the supply current when the hull is protected by the impressed current cathodic protection method. It is difficult to obtain these parameters through traditional experimental methods due to the huge hull surface area and geometric complexity. This study aims to solve the problem by finite element method. Design/methodology/approach First, a great number of experiments need to be conducted; second, experiments are empirical; finally, there exist measurement errors, etc. All these factors make the experimental results less reliable. The application of the finite element method, combined with other technologies, is expected to overcome these deficiencies. In this paper, the combined Matlab and Comsol method was used to calculate various anode positions and corresponding protection areas with a series of input current conditions. The calculation is implemented via the script in Matlab. Findings As a result, the best design can be obtained. The results show that the method provided in this paper can replace the experiment to a certain extent, save human and material resources and reduce the design time. The method also can be applied to other similar fields, having a good universality. Originality/value This optimization method can be extended to other areas of relevant production and research, having a good universality.

Study on Instant Original Characteristic Calculation and Matching Method for Torque Converter Test Automation

2012 ◽  
Vol 482-484 ◽  
pp. 421-425
Author(s):  
Jin Li ◽  
Wei Wei ◽  
Qing Dong Yan
Keyword(s):  
Electric Power ◽  
Test Data ◽  
High Efficiency ◽  
Characteristic Curve ◽  
Torque Converter ◽  
Test System ◽  
Automation System ◽  
Test Automation ◽  
Report Generation ◽  
Original Characteristic

To obtain the original characteristic of torque converter automatically and efficiently, a test automation system of torque converter is set up based on electric power cycling technology, and a test automation software is programmed by Labview language based on serial communication and technology. This test automation system realizes the load electric power recovery, test data acquisition and processing, the torque converter original characteristic curve generation, matching calculation with the engine, saving the test data and curve pictures, and the formal report generation automatically. The high efficiency and convenience of the test system are illustrated by a practical application.

Discussion about the Information Management and the Intellectualization of Unattended Substation

2011 ◽  
Vol 317-319 ◽  
pp. 1353-1356
Author(s):  
Yu Shu Li ◽  
Zhi Hong Guo ◽  
Guang Ming Yi
Keyword(s):  
Information Management ◽  
Communication Technology ◽  
Computer Technology ◽  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Remote Measurement ◽  
Long Distance ◽  
Profound Influence ◽  
Operational Guidance

Carry on unattended substation at the voltage of 220kV and the following is a technological innovation which having the profound influence to the current power supply system, is also the most important technology safeguard measure of the downsizing for efficiency in the power supply system. Along with the development of modern communication technology, computer technology, network technology, automatic control technology, image technology, monitoring technology and weak electricity integration technology, we had already realized the image and the sound signal's digitization, the audio and video signal's processing and the long-distance transmission. To the substation, besides the remote measurement, the remote signaling, the remote control, and the remote regulating functions which have already realized, the remote monitoring has also increased which called “five remote”. The “five remote” caused unattended substation become the reality and give a higher request to the information management and the intellectualization simultaneously. According to many years unattended substation's operational guidance experience, I proposed my ideas about the information management and the intellectualization of unattended substation, I hope that it is helpful to the promotion of the unattended substation.

A Phenomenological Model for Fatigue Crack Growth Rate of X70 Pipeline Steel in H2S Corrosive Environment

2014 ◽  
Vol 136 (4) ◽  
Author(s):  
Jing Wang ◽  
Xiao-yang Li
Keyword(s):  
Growth Rate ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Test Data ◽  
Phenomenological Model ◽  
Stress Ratio ◽  
Pipeline Steel ◽  
Long Distance ◽  
Corrosion Fatigue Crack

Long distance pipeline transmission is considered to be the most economic and safest method to transport natural gas in recent days. The pipeline safety problem is a focus of concern in the academic and industrial circles. Wildly used material X70 pipeline steel is tested in this paper. Based on actual conditions of long distance pipeline, experiments were designed by using orthogonal method. Corrosion fatigue crack growth tests were carried out under different H2S concentrations (2000 ppm, 1000 ppm, 500 ppm), stress ratios (0.9, 0.8, 0.7), and load frequencies (0.0067 Hz, 0.01 Hz, 0.013 Hz). A phenomenological model was built based on test data and Paris formula, which corrects parameters C and n of the Paris formula at the same time. The boundary element method (BEM) was used to simulate the process of corrosion fatigue crack propagation. Fatigue crack growth rates (FCGRs) under different loading conditions were obtained and all the parameters of the phenomenological model were calculated from test data. Compared with traditional Paris formula, this new model shows coupling interactions of stress ratio, load frequency, and H2S concentration to both slope and intercept of FCGR curve in log-log space. The simulation results show that the largest difference between actual test data and BEM simulation is less than 10%. According to the analysis of coupling interactions of each factor, the slope of fatigue crack growth rate (FCGR) curve in log-log space is mainly influenced by frequency; the influence of H2S concentration is nonlinear, and FCGR increases significantly with the increase of stress ratio and decrease of frequency. The BEM is suitable to be used in the engineering field to predict the residual life of pipelines.

Sign in / Sign up

Export Citation Format

Share Document