Design and simulation of a mobile robot platform for navigation and obstacle detection

Mobile platforms are expected to gain access to risk zones and hazardous environment. A typical example is the infectious disease environment to deliver items to a sick patient. The robot is aimed to manoeuver round flat grounds in indoor environment. Computer aided design (CAD) models of the selected concepts were developed in Fusion360 and imported into SolidWorks to optimize and improve the design. The design is focused on the development of the wheelbase. Arduino Microcontroller was the system and codes control board and it was developed using the Arduino software. The motor driver was used to drive the DC motor for robot navigation with ultrasonic sensor for obstacle detection at a range of 20 cm. Result shows that the robot was able to navigate round flat ground while detecting obstacles within 20 cm

Fused Deposition Modeling Printed Patterns for Sand Casting in a Nigerian Foundry: A Review

There has been a gradual adoption of Three-Dimensional (3D) printing in pattern making for sand casting absolutely because of its reduced lead-time and higher dimensional accuracy.Pattern making is the most central activity in the production line of any casting operation. A delay in pattern making or a defect in pattern usually translates to increased production cost and time or poor quality castings respectively. Many foundry industries have been concerned with reducing the duration for pattern making and improving the dimensional accuracy of patterns. Adoption of Fused Deposition Modeling (FDM) based patterns have only provided a limited solution to the challenges of traditional pattern making for sand casting.Some patterns are not suitable for FDM printing due to their size volume which is not usually cost-effective to print. Also,the surface quality and mechanical properties of patterns produced with FDM are usually affected by process parameters thereby leading to post-manufacturing treatment before the patterns are suitable for moulding operation. This study investigated the problems of traditional pattern making and the challenges of FDM-printed PLA-patterns for sand casting and suggested solutions and areas for future research. Related researches on 3D printing in the foundry carried out around the worldwide are discussed

Development of a Low Cost Ventilator using a Proportional Solenoid Valve

This paper describes the development of portable mechanical ventilator using a proportional solenoid valve whose aim is to regulate the flow rate of oxygen to the patient together with an Arduino Mega2560 as the main controller for the machine before delivering the required volume to the patient; base on their ideal body weight so as to prevent blowing out the lungs The aimed of this development is to save and improve the quality of lives of patients with respiratory problems rather than replacing the existing ventilator. Furthermore, test analysis was conducted to evaluate its performance and also the comparative analysis between the standard and the developed ventilator showed the reasons why most hospitals don’t have ventilators

A Plan for Igniting Nigeria’s Industrial Revolution

The Industrialization of countries is in every way influenced by forerunner nations. This is exemplified in Western Europe’s copying of Britain’s technology and manufacturing systems. This work presents a study of the industrialization of nations such as Japan, South Korea, Taiwan, Singapore and several other industrializing countries and the lessons learned revealed that the industrialization of these nations was based on initial imitative-reverse-engineering of products of forerunner nations which then leads to endogenous growth and the onset of innovation under certain constraints. This is a strategic form of import substitution and is in fact the model around which a plan for Nigeria’s Industrialization has been buil

DEVELOPMENT OF A 0.5KW HORIZONTAL AXIS WIND TURBINE

Wind turbine is a machine that is powered by the energy from the wind. It is designed to convert the kinetic energy from the wind into electrical power (electricity). This study focus on the development of 0.5KW horizontal axis wind turbine. The major components of the wind turbine which include the blades, hub, shaft and the tower, were design and fabricated to meet the required 0.5 KW and the turbine was mounted on a tower height of 5m from the sea level. The test result showed that the wind turbine is capable of producing about 500 W, at a rotor speed of 153.5 rpm. The necessary design details that have been applied at the design and fabrication stages of the wind turbine guarantees the high hope of this wind turbine performing better

2019 8th International Conference on Mechatronics and Control Engineering

There have been a number of successful attempts in designing obstacle avoiding robots. These works differ by selection of sensors, path mapping process and the algorithms applied to set the operational parameters. In this paper we present a los cost ultrasonic distance sensor for obstacle avoidance for mobile robot navigation. The system is implemented using microcontroller Arduino Uno, a Wi-Fi module, an Arduino motor shield driver which controls the robot through the geared dc motors. The system showed good performance under various lighting conditions. Experimental results with varied positions of obstacle show the flexibility of the robot to avoid it and have shown a decent performance in our laboratory. The robot is additionally ready to acknowledge victims before it, the sensing element system is extremely low-cost as a result of it solely uses one distance sensing element

DEVELOPMENT OF A 0.5KW HORIZONTAL AXIS WIND TURBINE

Wind turbine is a machine that is powered by the energy from the wind. It is designed to convert the kinetic energy from the wind into electrical power (electricity). This study focus on the development of 0.5KW horizontal axis wind turbine. The major components of the wind turbine which include the blades, hub, shaft and the tower, were design and fabricated to meet the required 0.5 KW and the turbine was mounted on a tower height of 5m from the sea level. The test result showed that the wind turbine is capable of producing about 500 W, at a rotor speed of 153.5 rpm. The necessary design details that have been applied at the design and fabrication stages of the wind turbine guarantees the high hope of this wind turbine performing better

Modeling and Design of a Humanoid Robot by Additive Manufacturing Process

By the year 2030, it is estimated that 800 million workers all over the world could be replaced by robots and this is evident of a robotic revolution happening in healthcare worldwide. This study aims to model and design a humanoid robot with additive manufacturing process. Computer aided design (CAD) models of the selected concepts were developed in Fusion360 and imported into SolidWorks to optimise and improve the design. The first stage of the design focused on the development of the main body and wheelbase, while the second phase focused on the arms and manipulators. To meet the project requirement of a payload of 500 g we selected a tough and low density material with appropriate servo motor with a torque of 9.4 kg/cm at each joint. The parts of the robot were produced by additive manufacturing process with an extrusion technique called fused deposition modelling (FDM) where a continuous filament of thermoplastic material, Polylactic acid (PLA) was fed from a coil via a moving heated extruder head and gradually deposit on the work. Overall, the robot proved that the proposed design is able to achieve the design requirements while mimicking basic human movements