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One common means of identifying materials is by touch and the sound produced from the material. However, the sound produced by striking the surface of various materials is different. Materials of different thickness produce different sounds when struck and this is a good method to identify the material. The frequency at which the sound produced from various materials also differs from one material...
A truthful gas dispersion simulator is needed to compare and evaluate the algorithms of mobile gas detection robots because it is extremely difficult to reproduce the similar experiments' environment parameters in the real world. On the grounds that, some environment parameters such as wind direction and speed, humidity, and temperature are problematic to be manipulated in a real word experiment,...
Low-Rate Wireless Personal Area Network, LR-WPAN built on IEEE 802.15.4 is costless and very simple to use thus making it the most popular choice in sensor data handling and process. The disadvantage of LR-WPAN is the performance of the communication is not stable, hence the biggest challenge is to deal with high packet loss. Such packet loss is mainly due to data overflow at 1 or more nodes as a...
Autonomous drones system has great potential in robotics research and it is used in industrial applications. One of the popular examples is Amazon Prime Air service which uses drones to delivery customers ordered products. Another example is under indoor environment such as transferring goods and products in warehouse. However, there is a research challenge when implementing - autonomous drones system...
The ability to identify the kind of material is easy for the sighted who have the ability to see and feel. This is not so for the visually disabled or for mobile telerobots which are used in rescue missions. Feeling the object is not an accurate means of identification neither is the sound produced from them. This paper describes a tele-haptic application which can be utilised to give the mobile telerobots...
The rapid expansion of the Internet and electronic commerce has encouraged many consumers to buy a variety of products online. However, due to the poor accessibility of online websites, visually impaired do not shop online or if they do, they often request help from sighted people. An online store prototype which has shopping features such as product catalogue, shopping cart and payment system was...
The susceptibility of WiFi networks to Rogue Access Point attacks derives from the lack of identity for 802.11 devices. The most common means of detecting these attacks in current research is through tracking the credentials or the location of unauthorised and possibly malicious APs. In this paper, the authors outline a method of distinguishing WiFi Access Points using 802.11 MAC layer management...
As more and more retailers offer their products for sale online, their web-based content is becoming increasingly visual and complex for visually impaired persons to access, navigate, and interpret when using current accessibility technologies such as screen reader, voice browser and Braille display. This hindered their independence to go online to shop. In this paper, a study on whether visually...
Exchanging haptic information over best-effort networks such as the Internet presents challenges due to the extremely high sensitivity to network impairments, especially the simultaneous occurrence of time-varying network latency and packet loss. Subsequently, the haptic interaction experience is deteriorated along with a reduction in the fidelity. In this paper we present a new approach to mitigate...
The typical wireless network topology for general purpose multi-robot systems is mesh network topology. However, this most commonly used mesh network routing protocol is not the optimal solution for multi-sniffer robots, which have different characteristics as compared to other multi-robot systems. Multi-sniffer robots are to perform Odour Source Localisation (OSL) tasks i.e. searching and identifying...
Most of the sniffer robots available today are housed on wheels and function at the 2D level while tracking prospective odour plumes. The wheeled sniffer robot cannot track odour plumes effectively as the odour plumes are released into a 3D space. Hence, a different type of robot locomotion is needed so that it is capable of tracking the odour plume effectively in ‘3D real-space’. Firstly, the focus...
Haptic interfaces have been applied as controllers in many areas especially tele-operation and distributed virtual environments. They are used to manipulate objects in both physical and virtual environments. Haptics enhance force interactions and provides a better immersive user experience. Moreover haptic devices inherently function in close proximity to humans. In the case of network-based haptic...
6L0WPAN is an IPv6 adaptation layer that defines Internet Protocols over low power, low data rate devices such as IEEE 802.15.4. It is difficult to implement because the size of IPv6 packet is much larger than the packet size of IEEE 802.15.4 data link layer. In order to solve this problem, the IETF 6LoWPAN working group introduces the adaptation layer between network and data link layers. It provides...
Feedback of proprioceptive information is important for many tele-robotic systems, especially performing a navigation task and out-of-sight remote controlling. Proprioception is defined as the ability to sense the position, location, orientation, and movement of the body and its parts. Although proprioceptive feedback is one of the significant feedbacks for tele-operations, it has not been taken much...
DeAuthentication Denial of Service attacks in Public Access WiFi operate by exploiting the lack of authentication of management frames in the 802.11 protocol. Detection of these attacks rely almost exclusively on the selection of appropriate thresholds. In this work the authors demonstrate that there are additional, previously unconsidered, metrics which also influence DoS detection performance. A...
Feedback of proprioceptive information is essential for many tele-robotic systems, especially those designed to undertake tasks concerning hazardous environments and for efficient out-of-sight remote control applications. Given highly sensitive nature of these applications, even small errors (e.g. less than one degree of displacement in robot posture) can cause unnecessary risk. Thus, accurate feedback...
This paper presents an experimental investigation into a new peer-to-peer wireless network architecture for real time telehaptic operation in distributed virtual environments (DVEs). The new peer-to-peer architecture is able to support haptic interactions over different wireless network architecture. Experiments have been conducted to show the performance of different wireless architecture, i. e....
This paper presents an investigation into a new peer-to-peer wireless network architecture for real time tele-haptic operation in distributed virtual environments (DVEs). A novel force collaboration and position synchronization algorithm is developed in order to support wireless networked haptic interactions. The new peer-to-peer architecture is able to support haptic interactions over wireless IP...
This paper presents an investigation into a new peer-to-peer network architecture for real time tele-haptic operation in distributed virtual environments (DVEs). A novel force collaboration and position synchronization algorithm is developed in order to support networked haptic interactions. Network impairments such as time delay, jitter and packet loss each have different (and severe) impacts on...
The effective transmission of traffic involving the sense of touch (haptics) presents a significant challenge to the current Internet architecture. It is now accepted that the Quality of Service (QoS) needed to support haptic feedback in networks will be significantly different from that used to support conventional real-time traffic such as voice or video, primarily because this traffic originates...
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