Saul Emanuel Delabrida

Building Wearables for Geology: An Operating System Approach

Wearable devices have emerged in the last years with new applications that provide user convenience. Healthcare, sports, safety are some examples of applications embedded in thousands of devices released in the last years. Wearable operating systems with different focus emerged together with wearable applications in order to make adjustments and optimizations of software and hardware. This paper presents a wearable operating systems discussion and shows the current challenges and wearable operating system inuence. We developed a wearable appliance for geology. The wearable contains a Head Mounted Display (HMD) assembled with Google Cardboard API and sensors connected to developments boards. For each system component was used different operating systems according to hardware and software available. The results indicate some trends for wearable operating systems.

Towards a Wearable Device for Monitoring Ecological Environments

Wearable devices have emerging in last years with diverse applications for provide user convenience. Health care, sports, safety are some examples of areas in which wearable devices have been applied. This paper describes an overview about wearable architectures found in the literature and presents a novel wearable for monitoring ecological environments. The wearable is composed of a Head-UP Display (HUD) assembled with Google Cardboard API and sensors connected to a development board. Our wearable device provides several functionalities such as distance measurement to objects and weather conditions monitoring. Camera and green lasers combined with a digital image processing algorithm are used to measure the distance to objects. Our system is evaluated in different development boards.

Wearable HUD for Ecological Field Research Applications

Wearable devices have emerged in the last years with new applications that provide user convenience. Healthcare, sports, safety are some examples of areas in which wearable devices have been used. This paper overviews wearable architectures found in the literature and presents a novel wearable for monitoring ecological environments. The wearable includes a Head-UP Display (HUD) assembled with Google Cardboard API and sensors connected to a development board. Our wearable device provides several functionalities such as distance measurement to objects and weather conditions monitoring. Camera and green lasers combined with a digital image processing algorithm are used to measure the distance to objects. We different development boards to build the system.

A Constraint-Driven Assessment of Operating Systems for Wearable Devices

Wearable devices have increasingly become popular in recent years. Devices attached to users body now remotely monitor his daily activities/health. However, some operating systems running on these devices were not initially designed and developed for this purpose, letting them have a poor performance or even requiring to spend more resources or better hardware. This work presents a comparison, driven by specific constraints, between operating systems for wearable devices. Our research raised the key constraints of this context and figured out which operating system has the best performance. Results presented here shows that evaluated operating systems do not have enough performance when considering wearable devices specific constraints, letting us conclude that improvements should be made.

Towards a Low-Cost Augmented Reality Head-Mounted Display with Real-Time Eye Center Location Capability

The real-time detection of eye center location provides valuable information to be used in a wide range of applications such as face alignment, face recognition, human-computer interaction, device control for people with disabilities and users attention detection. Gaze tracking systems is another type of application that uses the eye center location to infer the direction of the users gaze. These systems can be applied to Augmented Reality (AR) Head-Mounted Displays (HMDs) in order to improve the User Experience. This work presents a low-cost AR HMD prototype with real-time eye center location capability. This work also presents an overview of Augmented Reality Head-Mounted Displays and methods for eye center location found in the literature. To assess our AR HMD prototype, we choose a state-of-the-art method for eye center location found in the literature and evaluate its real-time performance in different development boards.

Fast prototyping of an AR HUD based on google cardboard API

A Head-Up Display (HUD) prototype as tool for biologists is introduced in this work. The prototype contains two sensors to climate monitoring, a multi-point laser to infer objects distances and a smartphone to display information for users. CardBoad API has been used as an Augmented Reality platform. The HUD hardware was printed in 3D printer, sensors are connected in an Intel Galileo development board and the data communication is done through Bluetooth technology. Also, this work describes experiences obtained with prototype development.

An Integrated Inspection System for Belt Conveyor Rollers - Advancing in an Enterprise Architecture.

One of the most critical equipment used by mining companies is the belt conveyor. Thousands of kilometers of these elements are used for bulk material transportation. A belt conveyor system is composed of several components, and the maintenance process is not trivial and usually reactive. Thousands of dollars are lost per hour with the failure of a conveyor belt system. This occurs due to the lack of appropriate mechanisms for efficient monitoring and integration of this process to the enterprise systems. This paper presents a novel monitoring and integration architecture for a Brazilian mining company. The challenge is to provide a mobile control system and its integration with the current enterprise solutions. We also describe a set of restrictions for the particular component (rollers) in order to identify methods for the integration. Preliminary results demonstrate our solution is a feasible alternative for the case study.

Design of a wearable system for 3D data acquisition and reconstruction for tree climbers

Ecologists often need to extract data from forests to determine the flora and fauna conditions. Tree climbing is one technique used for this. Climbers go to the top of the tree and use hand held equipment to collect and make notes while they are descending. This process demands expert climbing skills and biology expertise, which are two characteristics not commonly found. This paper describes the design of mobile system for 3D data collection and reconstruction of the field research environment for remote evaluation. The prototype can be used to reduce the time spent up trees and collected data that can be used for crowd-sourced evaluation.

A Low Cost Optical See-Through HMD - Do-It-Yourself

HMD that provides Virtual Reality and Augmented Reality capabilities are emerging in the last years. Manufacturers are seeking to design hardware that maximizes the field of view (FoV) and depth of field (DoF). On the other hand, we did not found a device that allows the variation of these parameters. This paper presents a model to build HMD using mirrors reflection. Our model allows the adjustment of the DoF. Consequently, the FoV also changes. Our prototype shows that the proposed feature is a feasible alternative. Furthermore, we present a simple and low-cost alternative for HMD development.

Combining the Spray Technique with Routes to Improve the Routing Process in VANETS

Vehicular networks represent a special type of wireless network that has gained the attention of researchers over the past few years. Routing protocols for this type of network must face several challenges, such as high mobility, high speeds and frequent network disconnections. This paper proposes a vehicular routing algorithm called RouteSpray that in addition to using vehicular routes to help make routing decisions, uses controlled spraying to forward multiple copies of messages, thus ensuring better delivery rates without overloading the network. The results of experiments performed in this study indicate that the RouteSpray algorithm delivered 13.12% more messages than other algorithms reported in the literature. In addition, the RouteSpray algorithm kept the buffer occupation 73.11% lower.