Advanced Portable Wireless Measurement and Observation Station (original) (raw)

Deployment of Wireless Mobile Detection and Surveillance for Data-Intensive Applications

Transportation Research Record: Journal of the Transportation Research Board, 2004

Real-time information about traffic conditions is vital in construction, advanced traffic management systems, advanced traffic information systems, and other operational or design activities. Traditionally, at most permanent installations, such information is captured by in-pavement sensors and transmitted through land-based communications. However, temporary detection and surveillance are often needed as alternatives to the permanent sensor and camera systems at construction sites, during special events, or during communication or sensor failures. In such cases, temporary detection and surveillance must be reliable and low cost. Recent advances in wireless technologies have enabled development of portable detection and surveillance systems that can detect traffic, collect measurements, capture live video, and transmit this information wire-lessly back to the supervising station to facilitate rapid, inexpensive, and efficient deployment. However, to make widespread use practical, fu...

Rapidly Deployable Low-Cost Traffic Data and Video Collection Device

Transportation practitioners, planners and researchers lack the availability of an easily deployable, non-intrusive, portable, low-cost device for traffic data collection and video recording at intersections and arterials as well as temporary remote surveillance. The necessary data usually includes volumes, speeds, classification, turning movements, queue size and length, conflicting movements, and time headways. They also include recording of traffic characteristics, accidents and other special situations. A visual record of traffic characteristics at intersections, arterials, or other locations can also be used for extensive analysis and research leading to improved safety and control practices. In this report, the development and demonstration of a low-cost, practical, rapidly deployable video recording and data collection device is presented along with the design, deployment, and data extraction process. Its major advantage at intersections is that only one unit can cover an entire intersection up to 5 lanes per incoming approach wide (20 incoming lanes total), which should be sufficient for the overwhelming majority of intersections. In addition it has the potential of extracting turning movements automatically including optional lanes through advanced machine vision or radar sensors.

An experimental station for real-time traffic monitoring on a urban road

2002

Several researches have been conducted on real-time traffic monitoring topic and relevant applications in the same field have been developed in the last years. Interesting results have been obtained from the integrated utilization of different technologies (traffic monitoring tools, information transmission systems, etc.). The paper reports on a research activity in progress concerning the implementation of an integrated system for real-time traffic monitoring, through video sensors and inductive loops, and their real-time transmission from a survey station to a remote operational lab. The survey station has been implemented in an urban road of Reggio Calabria (Italy), where a high number of buses and private vehicles interact with pedestrian flow. The first results concern the system test and evaluation in order to develop a reliable survey system-prototype for urban roads; the acquisition of an extended data-base for different traffic and environmental conditions.

A Wireless System for Real-Time Environmental and Structural Monitoring

Lecture Notes in Computer Science, 2007

Accurate real-time monitoring of structural health can result in significant safety improvements, while providing data that can be used to improve design and construction practices. For bridges, monitoring of water level, tilt, displacement, strain, and vibration can provide snapshots of the state of the structure. Real-time measurement and communication of this information can be invaluable in guiding decisions regarding the safety and remaining fatigue life of a bridge. This paper describes the real-time data acquisition, communication, and alerting capabilities of the Flood Frog, an autonomous wireless system for remote monitoring. Battery power and utilization of the GSM cellular network result in a completely wireless system. Coupled with the low cost of the device, the elimination of cables allows deployment in locations where autonomous monitoring is hindered by cost or infeasibility of installation. The first prototype of the system was deployed in Osage Beach, MO in November 2006.

Development of a Rapidly Deployable Wireless Monitoring System for Bridges

2012

As the population of highway bridges ages, the labor-intensive practice of visual inspections becomes an increasing burden for resource limited agencies. However, recent developments in wireless technology, low power electronics, and graphical software make effective and useful real-time monitoring of bridges economically feasible. This paper describes a multi-year research and development project to investigate and develop a complete monitoring system that can be easily deployed and used to augment scheduled visual inspections with real-time sensor data and fatigue analysis. A key hardware component of the system is a new lowpower wireless data acquisition device that works with conventional resistive strain gages has been developed to perform real-time strain monitoring and fatigue analysis. The research team developed an innovative measurement architecture that is optimized for low power operation while providing flexibility to the user to tradeoff power consumption for measureme...

Wireless Roadside Inspection Proof of Concept Test Final Report

2009

The Federal Motor Carrier Safety Administration (FMCSA) funded this project to Determine the feasibility of gathering vehicle, driver and carrier data to be used to format and wirelessly transmit from a commercial motor vehicle a safety data message set. The results of this effort will be used in the decision to move forward to conduct a pilot test.

Development of Wireless Traffic Monitoring System for ITS Instruction and Research

2000

Transportation engineering has evolved into a broad multidisciplinary field during the last few decades. This multidisciplinary nature of the profession has become more profound and visible since the advent of the Intelligent Transportation Systems (ITS) early last decade. The remarkable advances in computers, communications, electronics, control, and other related technologies have found important applications in the transportation system. Universities are

A sensor network system for measuring traffic in short-term construction work zones

2009

Abstract. In this paper, we present the design and implementation of a sensor network system for monitoring the flow of traffic through temporary construction work zones. As opposed to long-term work zones which are common on highways, short-term or temporary work zones remain active for a few hours or a few days at most. As such, instrumenting temporary work zones with monitoring equipment similar to those used in long-term work zones is not practical.

Monitoring the Speed, Configurations, and Weight of Vehicles Using an In-Situ Wireless Sensing Network

—The Virginia Polytechnic Institute and State University is developing an integrated transportation monitoring system that will be capable of monitoring pavement and traffic simultaneously. As part of the system, a backcalculation method, which is presented in this paper, is used to estimate the speed, weight, and configuration of passing vehicles based on the pavement responses collected by in-situ pavement sensors. This method is still in its preliminary stage but could be very helpful in achieving real-time weigh-in-motion and traffic classification once completed in the future. A Gaussian model is used to describe the distribution of the horizontal strain induced by passing vehicles. The parameters of the Gaussian model are correlated with various loading conditions, including the weight and the configuration parameters of the passing vehicles, as proved by finite-element simulation and experimental measurements. The backcalculation process is efficient and valuable, considering the accuracy of the estimation with a low computational cost. The whole method is simple and straightforward and can be conveniently used in real-time monitoring.

Development of Wireless Sensor Network for Traffic Monitoring Systems

International Journal of Reconfigurable and Embedded Systems, 2014

Traffic congestion has been a major problem on roads around the world. In addition, there is increase in volume of traffic vehicle density at a steady rate. Thus traffic on major roads has to be controlled to keep the traffic flowing at an acceptable rate. Several schemes for replacing the predominantly used Round Robin (RR) scheme for reducing congestion at traffic junctions have been proposed. Dynamic traffic control schemes adapt to the changing traffic by monitoring the state (such as the number queued up on each lane). These need appropriate sensing and monitoring systems. In this paper a traffic monitoring and control system based on AMR (Anistropic Magneto Resistive) vehicle sensors, wireless sensor network and a proiritised Weighted Round Robin (WRR) scheduling technique, is developed.AMR sensors installed in road pavement detect the number of vehicles waiting in a traffic lane. The AMR sensors are connected to the master controller to form a Zigbee based sensor network. The master node consists of an ARM processor integrated with a Zigbee masternode. The traffic control algorithm is implemented at master node which is responsible for taking traffic signaling decision. It receives sensor data from all the lanes. A two level priority algorithm with weighted round robin scheduling, where first and second maximum weighted lane are to pass the signal is developed, To avoid starving the least loaded lanes, a cycle of normal round robin scheduling is performed after four rounds of proiritised weighted round robin schedule. The proposed algorithm is simulated and compared with the standard round robin algorithm. The developed algorithm decreases the average waiting time for a commuter while maintaining the average throughput up to average loads. The development traffic monitoring system is successfully demonstrated for a four lane junction.