Satellite Communications and Fleet Management – An Integrated Approach to the Road Transport Industry

2000 ◽  
Vol 53 (1) ◽  
pp. 20-24 ◽  
Author(s):  
Bob Cleary
Keyword(s):  
Satellite Communication ◽  
Satellite Communications ◽  
Integrated Approach ◽  
Road Transport ◽  
Fleet Management ◽  
Specific Data ◽  
The Road ◽  
Bar Codes ◽  
Software Packages ◽  
Exchange Data

Communications with vehicles has come a long way since 1979, when drivers made ‘check calls’ from roadside telephone boxes. With the advent of mobile phones, fleet managers were able to contact their drivers, whenever they wanted – well almost. But talking requires two people to be available at the same time. Usually the driver does not concentrate, because he is driving, and has to call back – more charges, and when did you last record a phone conversation? Now, satellite communication allows transmission of vehicle position and data. Messages sent to vehicles are stored in the vehicle (and by the sender). Messages sent to the office are stored at the office. Neither messages or positions can be intercepted. The purpose of this paper is to illustrate why the ‘key to better fleet management’ is in integrating data from messages with other systems. Pre-formed messages requiring only the ‘blanks’ to be filled bring standardisation to the system. Message fields can be formatted so that specific data may be collected and posted to other software packages. Users of such systems report savings in manpower by reducing duplication of work e.g.: a message confirming the delivery of a consignment, sent by the driver, is posted to the accounts system and an invoice raised automatically. The future includes transmission of bar codes, signatures on PODs (proof of delivery notes) and viewing of consignment positions, by customers, on the Internet. The conclusion must be that – in the battle for survival, where making profit can sometimes depend on saving costs – it will be those companies that embrace technology to link all their systems so as to exchange data, who will win out.

scholarly journals Determining Parameters of Functioning of Passenger Transport Routes by Means of Computer Simulation of Processes

2021 ◽  
Vol 20 (6) ◽  
pp. 514-521
Author(s):  
V. K. Dolia ◽  
K. V. Dolia ◽  
O. E. Dolia
Keyword(s):  
Mutual Influence ◽  
Integrated Approach ◽  
Road Transport ◽  
Passenger Transport ◽  
The Road ◽  
Passenger Traffic ◽  
Operation Process ◽  
The Moment ◽  
Normal Law ◽  
Key Indicators

The efficiency of the functioning of urban passenger transport routes has been studied in the paper. It has been established that the functioning of urban passenger transport routes takes place in a non-isolated environment, which affects the system from the moment of its formation and can lead to discrepancy between the calculated and actual efficiency of the system. As a result of the fucntioning indicator analysis of the passenger transportation route, it has been revealed that the environment of the route functioning affects the efficiency in a complex manner. Consequently, the mutual influence of one factor on others should be taken into account. Performance evaluation should be carried out for the entire route system, and not within the separately considered subsystem. As a result of the analysis of such key indicators as income, fuel costs, lubricants, maintenance and repair, discrepancies have been found between the planned values of indicators and actual data. It is determined that the distribution function of the random variables of these indicators is described by a normal law. At the final stage of the study, regularities in the influence of the road transport enterprise parameters on the probability of investment return have been obtained. The proposed integrated approach to determining the efficiency of urban passenger transport routes is based not only on the established, but also on the stochastic parameters that occur during the functioning of these routes. An algorithm has been developed for determining the efficiency of urban route passenger traffic, which takes into account the interrelation of income and expenses, modern ideas about the patterns of change in the prpbability of development of optimistic, pessimistic and intermediate scenarios for improvement of route efficiency events. The algorithm is based on formalized dependences of the change in time of the probabilities of income and expenses which are taken into account in the operation process of urban passenger transport routes with their various parameters.

INNOVATIVE METHOD OF SATELLITE COMMUNICATION

2019 ◽  
Author(s):  
Teodor Narytnik ◽  
Vladimir Saiko
Keyword(s):  
Communication Systems ◽  
High Speed ◽  
Satellite Communication ◽  
Radio Channel ◽  
Satellite Communications ◽  
Service Area ◽  
Satellite Systems ◽  
Orbit Satellite ◽  
Geometric Size ◽  
Distributed Satellite

The technical aspects of the main promising projects in the segments of medium and low-orbit satellite communication systems are considered, as well as the project of the domestic low-orbit information and telecommunications system using the terahertz range, which is based on the use of satellite platforms of the micro- and nanosatellite class and the distribution of functional blocks of complex satellite payloads more high-end on multiple functionally related satellites. The proposed system of low-orbit satellite communications represents the groupings of low-orbit spacecraft (LEO-system) with the architecture of a "distributed satellite", which include the groupings of the root (leading) satellites and satellite repeaters (slaves). Root satellites are interconnected in a ring network by high-speed links between the satellites. The geometric size of the “distributed satellite” is the area around the root satellite with a radius of about 1 km. The combination of beams, which are formed by the repeater satellites, make up the service area of the LEO system. The requirements for the integrated service area of the LEO system (geographical service area) determine the requirements for the number of distributed satellites in the system as a whole. In the proposed system to reduce mutual interference between the grouping of the root (leading) satellites and repeater satellites (slaves) and, accordingly, minimizing distortions of the information signal when implementing inter-satellite communication, this line (radio channel) was created in an unlicensed frequency (e.g., in the terahertz 140 GHz) range. In addition, it additionally allows you to minimize the size of the antennas of such a broadband channel and simplify the operation of these satellite systems.

scholarly journals A Theoretical Model with Which to Safely Optimize the Configuration of Hydraulic Suspension of Modular Trailers in Special Road Transport

2020 ◽  
Vol 11 (1) ◽  
pp. 305
Author(s):  
Rubén Escribano-García ◽  
Marina Corral-Bobadilla ◽  
Fátima Somovilla-Gómez ◽  
Rubén Lostado-Lorza ◽  
Ash Ahmed
Keyword(s):  
Theoretical Model ◽  
Wind Turbine ◽  
Optimization Algorithm ◽  
Hydraulic Cylinder ◽  
Road Transport ◽  
Automatic Testing ◽  
Transport Systems ◽  
The Road ◽  
Proposed Model ◽  
On The Road

The dimensions and weight of machines, structures, and components that need to be transported safely by road are growing constantly. One of the safest and most widely used transport systems on the road today due to their versatility and configuration are modular trailers. These trailers have hydraulic pendulum axles that are that are attached in pairs to the rigid platform above. In turn, these modular trailers are subject to limitations on the load that each axle carries, the tipping angle, and the oil pressure of the suspension system in order to guarantee safe transport by road. Optimizing the configuration of these modular trailers accurately and safely is a complex task. Factors to be considered include the load’s characteristics, the trailer’s mechanical properties, and road route conditions including the road’s slope and camber, precipitation and direction, and force of the wind. This paper presents a theoretical model that can be used for the optimal configuration of hydraulic cylinder suspension of special transport by road using modular trailers. It considers the previously mentioned factors and guarantees the safe stability of road transport. The proposed model was validated experimentally by placing a nacelle wind turbine at different points within a modular trailer. The weight of the wind turbine was 42,500 kg and its dimensions were 5133 × 2650 × 2975 mm. Once the proposed model was validated, an optimization algorithm was employed to find the optimal center of gravity for load, number of trailers, number of axles, oil pressures, and hydraulic configuration. The optimization algorithm was based on the iterative and automatic testing of the proposed model for different positions on the trailer and different hydraulic configurations. The optimization algorithm was tested with a cylindrical tank that weighed 108,500 kg and had dimensions of 19,500 × 3200 × 2500 mm. The results showed that the proposed model and optimization algorithm could safely optimize the configuration of the hydraulic suspension of modular trailers in special road transport, increase the accuracy and reliability of the calculation of the load configuration, save time, simplify the calculation process, and be easily implemented.

scholarly journals Work-Related Accident Prevention in Norwegian Road and Maritime Transport: Examining the Influence of Different Sector Rules

2021 ◽  
Vol 6 (5) ◽  
pp. 72
Author(s):  
Tor-Olav Nævestad ◽  
Beate Elvebakk ◽  
Karen Ranestad
Keyword(s):  
Safety Management ◽  
Qualitative Interviews ◽  
Road Transport ◽  
Accident Prevention ◽  
Small Scale ◽  
Maritime Transport ◽  
The Road ◽  
Work Related ◽  
Safety Regulations ◽  
Framework Conditions

About 36% of fatal road accidents in Norway involve at least one driver who is “at work”. It has been argued that the implementation of rules clearly defining the responsibility of road transport companies to prevent work related accidents, by implementing safety management systems (SMS), could lead to increased safety. In the present study we tested the validity of this suggestion, by examining the influence of different sector rules on work-related accident prevention in Norwegian road and maritime transport. In contrast to the road sector, the maritime sector has had rules requiring SMS for over 20 years, clearly defining the shipping companies responsibility for prevention of work-related accidents. The aims of the study were to: (1) examine how the different sector rules influence perceptions of whether the responsibility to prevent work-related accidents is clearly defined in each sector; and (2) compare respondents’ perceptions of the quality of their sectors’ efforts to prevent work-related accidents, and factors influencing this. The study was based on a small-scale survey (N = 112) and qualitative interviews with sector experts (N = 17) from companies, authorities, and NGOs in the road and the maritime sectors. Results indicate that respondents in the maritime sector perceive the responsibility to prevent work-related accidents as far more clearly defined, and they rate their sector’s efforts to prevent accidents as higher than respondents in road. Multivariate analyses indicate that this is related to the scope of safety regulations in the sectors studied, controlled for several important framework conditions. Based on the results, we conclude that the implementation of SMS rules focused on transport companies’ responsibility to prevent work-related accidents could improve safety in the road sector. However, due to barriers to SMS implementation in the road sector, we suggest starting with a simplified version of SMS.

scholarly journals XRD Data Visualization, Processing and Analysis with d1Dplot and d2Dplot Software Packages

Proceedings ◽  
2020 ◽  
Vol 62 (1) ◽  
pp. 9
Author(s):  
Oriol Vallcorba ◽  
Jordi Rius
Keyword(s):  
Data Analysis ◽  
Data Visualization ◽  
X Ray Diffraction ◽  
Specific Data ◽  
X Ray ◽  
Software Packages ◽  
Compound Database ◽  
Synchrotron Light ◽  
User Friendly ◽  
Transformation Processes

The d1Dplot and d2Dplot computer programs have been developed as user-friendly tools for the inspection and processing of 1D and 2D X-ray diffraction (XRD) data, respectively. d1Dplot provides general tools for data processing and includes the ability to generate comprehensive 2D plots of multiple patterns to easily follow transformation processes. d2Dplot is a full package for 2D XRD data. Besides general processing tools, it includes specific data analysis routines for the application of the through-the-substrate methodology [Rius et al. IUCrJ 2015, 2, 452–463]. Both programs allow the creation of a user compound database for the identification of crystalline phases. The software can be downloaded from the ALBA Synchrotron Light Source website and can be used free of charge for non-commercial and academic purposes.

scholarly journals A Systemic Approach to the Compensation of Rain Attenuation in Ka-Band Communication Satellites

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Piero Angeletti ◽  
Marco Lisi
Keyword(s):  
Satellite Communications ◽  
Integrated Approach ◽  
Rain Attenuation ◽  
Systemic Approach ◽  
Band Spectrum ◽  
Effective Solution ◽  
Combined Approach ◽  
Adaptive Compensation ◽  
Ka Band ◽  
Satellite Applications

Rain attenuation at Ka-band is a severe phenomenon that drastically impairs satellite communications at these frequencies. Several adaptive compensation techniques have been elaborated to counteract its effects and most often applied one at a time. The present paper proposes the contemporary exploitation of different techniques in a combined approach. Such an integrated approach is thoroughly analyzed in a simplified scenario and will be shown to achieve a very effective solution, making the Ka-band spectrum fully available for broadband satellite applications and network-centric systems.

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