Remote Ride Quality Monitoring of Acela Train Set Performance

Joint Rail ◽  
2002 ◽  
Author(s):  
Patrick Ackroyd ◽  
Steven Angelo ◽  
Boris Nejikovsky ◽  
Jeffrey Stevens
Keyword(s):  
Wireless Communications ◽  
Remote Monitoring ◽  
High Speed ◽  
High Reliability ◽  
Real Life ◽  
Ride Quality ◽  
Monitoring Systems ◽  
Car Body ◽  
Central Processing ◽  
Remote Monitoring Systems

Federal Track Safety Standards require daily measurements of car body and truck accelerations on trains operating at speeds above 125-MPH. In compliance with this requirement, twelve high-speed Acela coaches, operating in the Northeast Corridor between Boston, MA, and Washington DC, have been equipped with remote monitoring systems. The systems provide continuous measurement of car body and truck motions, detect various acceleration events, tag them with GPS time and location information, and deliver the data to Central Processing Stations through wireless communications channels. The Central Processing Stations installed at the National Railroad Passenger Corporation (Amtrak) and ENSCO, Inc., headquarters provide email and pager notifications to designated Amtrak officers and also make the data available to them over secure Intranet and Internet connections. The overall architecture has multiple levels of protection and redundancy in order to ensure high reliability and availability of the service. The systems have been in continuous operation for over a year and provided a multitude of valuable information. Examples of system-reported acceleration events include events caused by track irregularities and train handling. The paper also describes some of the real-life operational scenarios and situations that arise when autonomous remote monitoring systems are used, including wireless communications coverage issues, GPS location pitfalls, and maintenance issues.

Remote Monitoring of Hydroprojects: Design, Installation, and Verification of Remote Monitoring Systems

1998 ◽  
Author(s):  
JOhn W. Lemons ◽  
Michael C. Vorwerk ◽  
Joe H. Carroll ◽  
William E. Jabour
Keyword(s):  
Remote Monitoring ◽  
Monitoring Systems ◽  
Remote Monitoring Systems

Taking Vital Signs for Remote Monitoring Systems

2011 ◽  
Author(s):  
Marise Mikulis ◽  
Ewan Arthur Meldrum
Keyword(s):  
Remote Monitoring ◽  
Vital Signs ◽  
Monitoring Systems ◽  
Remote Monitoring Systems

Remote Monitoring Systems for Detection of Contact by Unauthorized Construction Equipment and the Cathodic Protection Condition on Buried Pipelines

2004 ◽  
Author(s):  
Shozo Hatanaka ◽  
Masahiko Tange ◽  
Morio Sumiyama
Keyword(s):  
Signal Processing ◽  
Cathodic Protection ◽  
Remote Monitoring ◽  
Heavy Traffic ◽  
Construction Equipment ◽  
Monitoring Systems ◽  
Indirect Methods ◽  
Detection Systems ◽  
Transmission Pipeline ◽  
Remote Monitoring Systems

It is necessary to avoid spreading damage to the pipe when it is struck by construction equipment. It is difficult to install indirect methods (e.g. fiber optic sensors) for detection of construction equipment in heavy traffic areas. Therefore, remote monitoring systems, which can detect contact between such equipment and the steel of polyethylene-lined pipe, were developed and installed on a gas transmission pipeline (φ 600 mm, Length 9.4 km). Detection uses the change in pipe-to-earth resistance which is derived from inner pipe current and pipe to soil potential when contact occurs. Old and new data of pipe-to-earth resistance are continuously compared. If equipment contacts the steel pipe, pipe-to-earth resistance will drop below 100 Ω. The detection systems include maximal length sequence signal (pseudo-random signal) processing. This signal processing is superior for noise reduction. These systems also have remote monitoring of the cathodic protection condition (pipe to soil potential, current of coupons (probes), and transformer rectifier output voltage and current). From the office, pipeline lining and cathodic protection conditions are monitored at all times.

Compressive SensingBased Remote Monitoring Systems for IoT applications

2018 ◽  
Author(s):  
Hamza Djelouat ◽  
MOHAMED Al Disi ◽  
Abbes Amira ◽  
Faycal Bensaali
Keyword(s):  
Remote Monitoring ◽  
Monitoring Systems ◽  
Iot Applications ◽  
Remote Monitoring Systems

scholarly journals The coupled effects of bending and torsional flexural modes of a high-speed train car body on its vertical ride quality

2019 ◽  
Vol 233 (4) ◽  
pp. 979-993 ◽  
Author(s):  
Vahid Bokaeian ◽  
Mohammad A Rezvani ◽  
Robert Arcos
Keyword(s):  
Analytical Model ◽  
Quality Index ◽  
High Speed ◽  
Ride Quality ◽  
Vertical Acceleration ◽  
Beam Model ◽  
High Speed Train ◽  
Flexural Mode ◽  
Car Body ◽  
Rail Irregularities

This study is focused on the effects of bending and torsional flexural modes of the car body on the ride quality index of a high-speed train vehicle. The Euler–Bernoulli beam model is used to extract an analytical model for a high-speed train vehicle car body in order to investigate its bending and torsional flexural vibrations. The rigid model includes a car body, two bogie frames, and four wheelsets such that, each mass has three degrees of freedom including vertical displacement, pitch motion, and roll motion. The results obtained with the proposed analytical model are compared with experimental measurements of the car body response of a Shinkansen high-speed train. Moreover, it is determined that the bending and torsional flexural modes have significant effects on the vertical acceleration of the car body, particularly in the 9–15 Hz frequency range. Furthermore, the ride quality index is calculated according to the EN 12299 standard and it is shown that the faster the train the more affected is the ride quality by the flexural modes. In addition, the effect of coherence between two rail irregularities (the right and the left rails) on the results of the simulation is investigated. The results conclude that if the irregularities are completely correlated the torsional flexural mode of the car body does not appear in the response. Also, the first bending flexural mode in such cases is more excited compared with the partially correlated or uncorrelated rail irregularities. Therefore, the ride quality index in completely correlated cases is higher than other cases.

A Cloud Multi-Tenant Architecture for Developing Machine Remote Monitoring Systems

2015 ◽  
Vol 764-765 ◽  
pp. 775-778
Author(s):  
Shang Liang Chen ◽  
Ying Han Hsiao ◽  
Yun Yao Chen ◽  
You Chen Lin
Keyword(s):  
Data Storage ◽  
Remote Monitoring ◽  
Monitoring Systems ◽  
Cloud Data Center ◽  
Cloud Data ◽  
Storage Devices ◽  
Machine Manufacturer ◽  
Remote Monitoring Systems ◽  
Monitoring Module ◽  
Client Side

This study proposes innovative multi-tenant remote monitoring platform architecture based on cloud with an injection machine manufacturer as cloud data center. This study was designed to develop machine connection mechanism and monitoring module, etc. with machine manufacturers. Under the architecture of this study, machine manufacturers can provide virtualization technology based remote monitoring systems for manufacturing buyers to rapidly develop custom monitoring software. All data storage devices such as servers are provided by the machine manufacturer, and the client side can effectively manage injection machine data by simply renting virtual machine space.

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