The passive operating mode of the linear optical gesture sensor

The study evaluates the influence of natural light conditions on the effectiveness of the linear optical gesture sensor, working in the presence of ambient light only (passive mode). The orientations of the device in reference to the light source were modified in order to verify the sensitivity of the sensor. A criterion for the differentiation between two states: "possible gesture" and "no gesture" was proposed. Additionally, different light conditions and possible features were investigated, relevant for the decision of switching between the passive and active modes of the device. The criterion was evaluated based on the specificity and sensitivity analysis of the binary ambient light condition classifier. The elaborated classifier predicts ambient light conditions with the accuracy of 85.15%. Understanding the light conditions, the hand pose can be detected. The achieved accuracy of the hand poses classifier trained on the data obtained in the passive mode in favorable light conditions was 98.76%. It was also shown that the passive operating mode of the linear gesture sensor reduces the total energy consumption by 93.34%, resulting in 0.132 mA. It was concluded that optical linear sensor could be efficiently used in various lighting conditions.Comment: 10 pages, 14 figure

Implementation of target tracking in Smart Wheelchair Component System

Independent mobility is critical to individuals of any age. While the needs of many individuals with disabilities can be satisfied with power wheelchairs, some members of the disabled community find it difficult or impossible to operate a standard power wheelchair. This population includes, but is not limited to, individuals with low vision, visual field neglect, spasticity, tremors, or cognitive deficits. To meet the needs of this population, our group is involved in developing cost effective modularly designed Smart Wheelchairs. Our objective is to develop an assistive navigation system which will seamlessly integrate into the lifestyle of individual with disabilities and provide safe and independent mobility and navigation without imposing an excessive physical or cognitive load. The Smart Wheelchair Component System (SWCS) can be added to a variety of commercial power wheelchairs with minimal modification to provide navigation assistance. Previous versions of the SWCS used acoustic and infrared rangefinders to identify and avoid obstacles, but these sensors do not lend themselves to many desirable higher-level behaviors. To achieve these higher level behaviors we integrated a Continuously Adapted Mean Shift (CAMSHIFT) target tracking algorithm into the SWCS, along with the Minimal Vector Field Histogram (MVFH) obstacle avoidance algorithm. The target tracking algorithm provides the basis for two distinct operating modes: (1) a "follow-the-leader" mode, and (2) a "move to stationary target" mode.The ability to track a stationary or moving target will make smart wheelchairs more useful as a mobility aid, and is also expected to be useful for wheeled mobility training and evaluation. In addition to wheelchair users, the caregivers, clinicians, and transporters who provide assistance to wheelchair users will also realize beneficial effects of providing safe and independent mobility to wheelchair users which will reduce the level of assistance needed by wheelchair users

Secure Navigation System for Visually Impaired

A cane is commonly used to help blind people navigate on a path. A stick is used to inform them about any pits, obstacles or elevation. This paper presents a secure system which detects any obstacles using an Ultrasonic sensor. GPS-GSM module is used that gives us the location of the person and sends a message alert on the phone of their families on regular intervals. Also, obstacle detection warning is given through a voice command using speaker or headphones. This system is designed to help visually impaired navigate a path safely and without much difficulties. In the present ongoing systems the security and safety of the visually impaired person is not adequately taken care of. So we will be preparing an Electronic Travelling Aid (ETA) with ultrasonic sensor and GPS for increasing the security and safety of the visually impaired person. This system will be more efficient and cost effective as compared to its former systems

The Smart Guide Cane for Assisting the Visually Challenged for Indoor

This paper introduces the concept of the Smart Cane that will use to guide the visually challenged person while walking. Cane is nothing but a hollow stick that is commonly used by the blind one usually. Here the cane is improved by using the sensors for obstacle detection, moisture and fire detection in their environment and to guide them towards their destination. Here we developed the hardware of the Smart Cane by using Atmega328 microcontroller and the outputs are display on the LCD

Communication system for a tooth-mounted RF sensor used for continuous monitoring of nutrient intake

In this Thesis, the communication system of a wearable device that monitors the user’s diet is studied. Based in a novel RF metamaterial-based mouth sensor, different decisions have to be made concerning the system’s technologies, such as the power source options for the device, the wireless technology used for communications and the method to obtain data from the sensor. These issues, along with other safety rules and regulations, are reviewed, as the first stage of development of the Food-Intake Monitoring projectOutgoin

Automated mixed traffic vehicle design AMTV 2

The design of an improved and enclosed Automated Mixed Traffic Transit (AMTT) vehicle is described. AMTT is an innovative concept for low-speed tram-type transit in which suitable vehicles are equipped with sensors and controls to permit them to operate in an automated mode on existing road or walkway surfaces. The vehicle chassis and body design are presented in terms of sketches and photographs. The functional design of the sensing and control system is presented, and modifications which could be made to the baseline design for improved performance, in particular to incorporate a 20-mph capability, are also discussed. The vehicle system is described at the block-diagram-level of detail. Specifications and parameter values are given where available

SYSTEM DETECTION FOR VEHICLE MOVEMENT

The main objective for this project is to develop an intelligent robot which can detect an obstacle object that blocking the main road. Besides the system also develop to create one robot system that can follow certain path to be use in moving or transport industries. Then security aspect also has been applied in this project by providing surveillance camera which able to monitor certain activity at one place by transmitting data or image recorded by it to security center. This research is on artificial intelligence knowledge which related to knowledge and intelligence that has been applied to robot system in order to implement the task which is similar or more human can do. All the task are done using latest technology in order to produce the greatest system that can be use by all sides and give benefit to all. From the finish product, I hope this robot can be use for the broad purpose and contribute to the big research of robotic development. From my research, Malaysia is still new with robot development, and with that I hope robot industry can become wider.