New Electronic Multi-media Assessment System

Chester, Simon; Tewkesbury, Giles; Sanders, David; Salter, Peter

doi:10.1007/978-3-540-74063-6_33

Cited by 22 publications

(22 citation statements)

References 2 publications

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“…In this case the mobile-robot responded to joystick inputs as if it was an unmodified mobile-robot system. Software systems were constructed using methods discussed in [50][51][52][53][54][55][56]. Systems had three main levels: supervisory, strategic and servo control.…”

Section: Mobile-robot With An Umbilical Cablementioning

confidence: 99%

Comparing ability to complete simple tele‐operated rescue or maintenance mobile‐robot tasks with and without a sensor system

Sanders

2010

Sensor Review

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The effect on completion of mobile-robot tasks is investigated depending on how a human tele-operator interacts with a sensor system and a mobile-robot. Design/methodology/approach: Interaction is investigated using two mobile-robot systems, three different ways of interacting with the robots and several different environments of increasing complexity. In each case, the operation is investigated with and without sensor systems to assist an operator to move a robot through narrower and narrower gaps and in completing progressively more complicated driving tasks. Tele-operators used a joystick and either watched the robot while operating it, or sat at a computer and viewed scenes remotely on a screen. Cameras were either mounted on the robot to view the space ahead of the robot or mounted remotely so that they viewed both the environment and robot. Every test was compared with sensor systems engaged and with them disconnected. Findings: A main conclusion is that human tele-operators perform better without the assistance of sensor systems in simple environments and in those cases it may be better to switch off the sensor systems or reduce their effect. In addition, tele-operators sometimes performed better with a camera mounted on the robot compared with pre-mounted cameras observing the environment (but that depended on tasks being performed). Research limitations/implications: Tele-operators completed tests both with and without sensors. One robot system used an Umbilical Cable and one used a radio link. Practical implications: The paper quantifies the difference between tele-operation control and sensor assisted control when a robot passes through narrow passages. This could be useful information when system designers decide if a system should be tel-operated, automatic or sensorassisted. The paper suggests that in simple environments then the amount of sensor support should be small but in more complicated environments then more sensor support needs to be provided. Originality/value: The paper investigates the effect of completing mobile-robot tasks depending on whether a human tele-operator uses a sensor system or not and how they interact with the sensor system and the mobile-robot. The paper presents the results from investigations using two mobilerobot systems, three different ways of interacting with the robots and several different environments of increasing complexity. The change in the ability of a human operator to complete progressively more complicated driving tasks with and without a sensor system is presented and the human teleoperators performed better without the assistance of sensor systems in simple environments.

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Section: Mobile-robot With An Umbilical Cablementioning

confidence: 99%

Comparing ability to complete simple tele‐operated rescue or maintenance mobile‐robot tasks with and without a sensor system

Sanders

2010

Sensor Review

Self Cite

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“…Common disturbances include differences in mobile-robot wheels or tractors or their different reaction to surfaces and surface or gradient 5,[45][46][47] . Users have been left to Tele-operated mobile-robots are generally guided using manual controls, often joysticks 5,34,46,48 although other input devices are available, such as switches 40 , or pointers [49][50][51] or custom built, such as Virtual Reality interfaces 52 .…”

Section: Introductionmentioning

confidence: 99%

Simple expert systems to improve an ultrasonic sensor‐system for a tele‐operated mobile‐robot

et al. 2011

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Time taken to complete a tele-operated task with a mobile-robot partly depends on how a human operator interacts with the mobile-robot. Current tele-operated systems tend to rely heavily on visual feedback and experienced operators and this paper investigates how to make their tasks easier using an expert system to interpret joystick and sensor data. Simple expert systems improve that interaction for a tele-operated mobile-robot using ultrasonic sensors. Systems identify potentially hazardous situations and recommend safe courses of action. Results are presented from a series of timed tasks completed by tele-operators using a joystick to control a mobile-robot via an umbilical cable and watching the robot while operating it or sitting at a computer and viewing the area ahead of the robot. Tele-operators completed tests both with and without sensors and using the recently published systems to compare results. The new systems described here consistently performed tasks more quickly than some recently published systems. The paper also suggests that the amount of sensor support should be varied depending on circumstances.

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“…1,3,5,8,[11][12][13] Systems have tended to be open loop. Intelligent systems [40][41][42][43][44] required sensors, 45,46 and control algorithms 47-50 that could process information from a tele-operator and sensors and use this information to assist the tele-operator. Common disturbances include differences in mobile-robot wheels or tractors or their different reaction to surfaces and/or gradients.…”

Section: Introductionmentioning

confidence: 99%

Analysis of successes and failures with a tele-operated mobile robot in various modes of operation

Sanders

Stott²,

Robinson

et al. 2011

Robotica

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The effect on failure rates of the way tele-operators interact with mobile robots is investigated. Human tele-operators attempted to move a robot through progressively more complicated environments with reducing gaps, as quickly as possible. Tele-operators used a joystick and either watched robots, while operating them, or used a computer screen to view scenes remotely. Cameras were either mounted on the robot to view the space ahead of the robot or mounted remotely so that they viewed both the environment and robot. Tele-operators completed tests both with and without sensors. Both an umbilical cable and a radio link were used.

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New Electronic Multi-media Assessment System

Cited by 22 publications

References 2 publications

Comparing ability to complete simple tele‐operated rescue or maintenance mobile‐robot tasks with and without a sensor system

Comparing ability to complete simple tele‐operated rescue or maintenance mobile‐robot tasks with and without a sensor system

Simple expert systems to improve an ultrasonic sensor‐system for a tele‐operated mobile‐robot

Analysis of successes and failures with a tele-operated mobile robot in various modes of operation

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