Real-time Remote Monitoring System Research Articles

A new early-warning prediction system for monitoring shear force of fault plane in the active fault

The most common method used to describe earthquake activity is based on the changes in physical parameters of the earth’s surface such as displacement of active fault and seismic wave. However, such approach is not successful in forecasting the movement behaviors of faults. In the present study, a new mechanical model of fault activity, considering the shear strength on the fault plane and the influence of the resistance force, is established based on the occurrence condition of earthquake. A remote real-time monitoring system is correspondingly developed to obtain the changes in mechanical components within fault. Taking into consideration the local geological conditions and the history of fault activity in Zhangjiakou of China, an active fault exposed in the region of Zhangjiakou is selected to be directly monitored by the real-time monitoring technique. A thorough investigation on local fault structures results in the selection of two suitable sites for monitoring potential active tectonic movements of Zhangjiakou fault. Two monitoring curves of shear strength, recorded during a monitoring period of 6months, turn out to be steady, which indicates that the potential seismic activities hardly occur in the adjacent region in the near future. This monitoring technique can be used for early-warning prediction of the movement of active fault, and can help to further gain an insight into the interaction between fault activity and relevant mechanisms.

Dynamic geometry monitoring system and its application in Sutong Bridge construction

The construction period of large cable-stayed bridges is long, and the structure deformation is complicated. Any error during construction will potentially affect the cantilever alignments and the internal forces. In order to ensure safety during construction and exactly determine the cantilever alignments, dynamic deformation monitoring is needed immediately when the construction of the superstructure starts. This paper aims at the requirement of deformation monitoring during the Sutong Bridge construction, and introduces the realization and observing schemes of the GPS and georobot based on remote real-time dynamic geometrical deformation monitoring system, then researches the data processing methods and enumerates some of the application achievements. Long-term operation during the Sutong Bridge construction indicates that the system runs steadily and the results are reliable.

Remote Machine Condition Monitoring Using Wireless Web Technology

A remote real-time machine condition monitoring system is reported in this paper, which is applied for diagnosis and prognosis of gearboxes’ working condition. Within the system, the diagnostic classification is performed by pattern recognition using statistic parameters, and remote diagnostic capability is enhanced by applying Wireless Web technology. An online signal-processing scheme is adopted based on time-frequency analysis, digital filtering and statistic parameter algorithm to detect early fault signals of gears and to provide expert advice for decision making for maintenance. The effectiveness of the developed remote diagnostic system is verified via experimental investigation of monitoring a gearbox on a test rig under different conditions.

Real-time remote monitoring of small-scaled biological wastewater treatment plants by a multivariate statistical process control and neural network-based software sensors

A real-time remote monitoring system for wastewater treatment plants (WWTPs) has been developed to give local operators a guideline that would allow them to arrive at the optimum operational strategy in the early stage of a process disturbance. Especially, small-scaled WWTPs in Korea's rural areas show a large fluctuation in their influent loading and, therefore, they require an efficient operation for treatment of organic matter, nitrogen and phosphorus. However, under requirements to lower running costs, most of the small-scaled WWTPs are being forced to operate with a minimum number of operators. It is too costly for them to employ a local expert to maintain plant systems properly. In recent years, recognition of these problems has raised great interests in real-time remote monitoring systems. They serve the key information needed for efficient operation, and help to transfer knowledge from the experts at a remote control center to local operators in real-time. In this study, both operation data and measurement values from a novel mobile multi-sensor system were transmitted on-line by a telecommunication system. Then multivariate statistical process controls and software sensor techniques were applied to supervise local WWTPs. The developed remote monitoring system makes it possible to monitor the current plants’ statuses and to support the operation of local wastewater systems.

Real time remote monitoring of air pollutants and their online transmission to the web using internet protocol

Recent advances in both information and sensor technologies have enabled the development of Real Time Remote Monitoring (RTRM) capabilities for environmental management. An online and real time remote monitoring system for air pollution has been designed and installed at a traffic police station at Punjagutta in Hyderabad, India. The system is optimized using electrochemical sensors and a real time particulate matter analyzer. The system also monitors meteorological parameters such as temperature, humidity, rainfall, barometric pressure, wind speed and wind direction. The system periodically monitors both pollution and meteorological parameters at pre- programmed intervals of [Formula: see text] hr during peak periods and 1 hr during non peak periods of the day and continuously uploads to a predestinated web site (www.appcb.org/home.htm) using File Transfer Protocol. The web site renders a quick, simple and graphical display of air pollution levels and meteorological parameters and their significance to humans. The present paper highlights design considerations of a pollution monitoring system, system hardware and software requirements and practical limitations and future directions for real time remote monitoring of air pollution.

Development and Deployment of a Real-Time Remote Continuous Monitoring System for Manholes

Development and Deployment of a Real-Time Remote Continuous Monitoring System for Manholes

FPGA-based real-time remote monitoring system

Real-time monitoring provides reliable, timely information of crop and soil status, important in taking decisions for crop production improvement. The contribution of this research is the development of a real-time remote monitoring system that acquires data from any kind of sensor to be transmitted by radiofrequency to a computer with an interface module, situated within a 900 m radius. This allows the sensing of large area fields with a system capable of monitoring crop local environmental or physiological status; the data transmission and storage in the computer is made in real-time. To design this device, the system on a chip approach was followed. Implementation was done in a field programmable gate array, which ensures a low cost. The performance of this system was tested using different kinds of sensors and compared with various commercial monitoring systems under greenhouse conditions. The experimental results showed the system to be reliable. For all experiments, the system obtained an R 2 greater than or equal 0.975 in a regression analysis between data acquired from our monitoring system and data obtained from a commercial datalogger with linear fit and second-degree polynomial fit.

Installation of superconducting gravimeter in the Antarctica

In February 2003 to January 2004, a new superconducting gravimeter with a cryocooler was installed to replace the former one in Syowa Station on the Antarctica. It has a high sensitivity of one nano-Gal to survey inside the earth in the Global Geodynamics Project (GGP network). A new type of diaphragm was confirmed to well isolate the vibration from refrigerator cold-head and to prevent the solid air contamination perfectly. Real time remote monitoring system from Japan is also established.

A new water column profiler for shallow aquatic systems

Coupled physical and biogeochemical processes in shallow (<2 m deep) productive systems must be observed on fine temporal and spatial scales with automated sampling and monitoring devices. We developed a pump profiler system that can sample six to eight depths at 10-cm resolution every 30 min. The system is economical, secure from vandalism, portable, and capable of integration with a real-time remote monitoring system. Solenoid valves select the suction depth, and a diaphragm pump delivers water to a flow cell where temperature, oxygen, pH, specific conductivity, turbidity, oxidation reduction potential, and fluorescence are measured with probes mounted on a water quality sonde. A microcontroller is used to direct the operation of the system. Water column disturbance and maintenance requirements are minimized by eliminating exposed moving parts. The data can be retrieved remotely and graphically displayed on the Internet in real time. The system has been deployed successfully in two freshwater ponds and a tidal saltwater system. The pump profiler is used to study coupled physical biogeochemical processes in shallow systems with strong diel cycles and large density and chemical gradients. Applications may include studies in aquaculture ponds, storm water retention ponds, shallow lakes, and small estuaries.

Short communication: a system for remote monitoring of a hospital linear accelerator.

Linear accelerators are complex machines with many parameters affecting the quality of the treatment beam delivered. A high level of technical support is required but this can be difficult to achieve if the linear accelerator is at a centre distant from a medical physics department. This paper describes a solution to this problem whereby a newly installed linear accelerator at the Royal Shrewsbury Hospital is remotely monitored from the Royal Hospital, Wolverhampton. The system enables run-up procedures to be completed by guiding radiographers at Shrewsbury through a series of steps. It consists of electronic hardware connected to the linear accelerator, under the control of a computer. The machine parameters are read and tested against preset tolerances. The monitoring system has been installed and is in routine use. The benefits have been shown to be: a saving in staff time and travel costs, the satisfactory completion of run-up procedures, a higher level of efficiency in the medical physics service provided and effective quality control. Finally, some future developments are presented. These include the development of a real time remote monitoring system that constantly monitors the linear accelerator, allowing the Medical Physics Department access to the machine parameters at any time.

Neutral Interfaces that Work: Application for Robot Welding

The integration of sub-systems, leading from geometrical design in a CAD system to a weld planning module and a robot simulation module, is realized by employing the neutral geometry description developed in the CAD*I project.The offline robot program resulting from the simulation system is transferred for execution by a welding robot via the neutral IRDATA job description file.A real time remote monitoring system, driven by the same signals that are sent from the robot controller to the robot, is used as a supervisory tool.The actual set-up was successfully demonstrated at the Fifth ESPRIT Technical Week in Brussels in November 1988 and serves to illustrate how the data transfer via neutral interfaces integrates five otherwise independent modules for a specific application.