i-manager's Journal on Electronics Engineering (JELE)


Volume 11 Issue 4 June - August 2021

Research Paper

Controlling Robotic ARM through a Wireless Hand Gesture-Design and Implementation

S. Bhargavi Latha* , B. S. Anil Kumar**, K. Sowmya Priya***
*-*** Department of Computer Science and Engineering, Gokaraju Rangaraju Institute of Engineering and Technology, Bachupally, Hyderabad, India.
Latha, S. B., Kumar, B. S. A., and Priya, K. S. (2021). Controlling Robotic Arm through a Wireless Hand Gesture-Design and Implementation. i-manager's Journal on Electronics Engineering, 11(4), 1-7. https://doi.org/10.26634/jele.11.4.17299

Abstract

The human hand was created to be a dexterous device by nature. The agility and flexibility of human hands are being replicated in some robotic system hands to improve grasping functions. People's labor will be greatly facilitated and protected by such manipulators. The goal of this study is to design and implement a "Wireless Hand Gesture Controlled Robotic Arm." The system is divided into three parts such as the accelerometer, the robotic arm, and the receiver. It is essentially an accelerometer and microcontroller-based system that uses a compact and low-cost 3-axis (DOF) accelerometer, the ATmega328, and the AT89S52MC to control a robotic arm remotely. This arm can move in two directions like vertically (up and down) and horizontally (left and right) (hold or release an object). An accelerometer is attached to the human hand, which records its movements (gestures and postures), and the robotic arm moves in response.

Research Paper

Dielectric Cover Layer Thickness Effect on Rectangular Microstrip Antenna Parameters

V. Saidulu*
Department of Electronics and Communication Engineering, Mahatma Gandhi Institute of Technology, Hyderabad, Telangana, India.
Saidulu, V. (2021). Dielectric Cover Layer Thickness Effect on Rectangular Microstrip Antenna Parameters. i-manager's Journal on Electronics Engineering, 11(4), 8-17. https://doi.org/10.26634/jele.11.4.18126

Abstract

Compared to traditional antennas, microstrip antennas offer numerous advantages, such as low prices, low weight, ease of feeding, and attractive radiation characteristics. A microstrip antenna is a radiator covered with a dielectric cover layer for protection from rain, snow, and other environmental conditions. When placing the dielectric cover layer on the microstrip patch antenna, it effects the antenna parameters. In particular, the resonant frequency is lowered, causing tuning problems and severely degrading the antenna performance. This paper discussed the effect of cover layer thickness on antenna parameters such as resonant frequency, gain, bandwidth, beam-width, VSWR, return loss, and radiation patterns. The proposed patch antenna is designed for an S-band frequency of 2.4 GHz. The proposed antenna is used in wireless and bluetooth applications. This paper experimentally studies the effects of cover layer thickness on microstrip patch antennas.

Research Paper

Navigation Tool - Pothole Detector

B. Vijayalakshmi* , Pappu Sonu**
*-** Department of Electronics and Communication Engineering, GVP College of Engineering, Visakhapatnam, Andhra Pradesh, India.
Vijayalakshmi, B., and Sonu, P. (2021). Navigation Tool - Pothole Detector. i-manager's Journal on Electronics Engineering, 11(4), 18-27. https://doi.org/10.26634/jele.11.4.17158

Abstract

The paper discusses a prototype of an ultrasonic pothole detector that was created as a component of a navigation system for vehicles, as well as for blind and visually impaired individuals. Using a single ultrasonic source and an array of microphones, the detector measures the time elapsed between issuing an ultrasound pulse and getting a rejected signal to compute the distance to an obstacle. The obstacle detector was put through a series of tests to ensure that it worked as intended and that it could detect a wide variety of obstructions. The results demonstrate that the majority of obstacles can be detected and recognized. The obstacle detector under consideration provides complete coverage of the safety zone in front of the users.

Research Paper

Dual-Band Beamforming Array Antenna for 5G Wireless Communications

Anjali B.* , Divya Bharathi R**, Harshitha Ranjini S***, Dhananjeyan R****
*-**** Department of Electronics and Communication Engineering, SRM Valliammai Engineering College, Chennai, Tamilnadu, India.
Anjal, B., Divya, B. R., Harshitha, R. S., and Dhananjeyan, R. (2021). Dual-Band Beamforming Array Antenna for 5G Wireless Communications. i-manager's Journal on Electronics Engineering, 11(4), 28-34. https://doi.org/10.26634/jele.11.4.18171

Abstract

There is a need for two operating frequencies to provide continuous connectivity and support a variety of applications. These dual-band antennas work in either one frequency band at a time or both, simultaneously. They enhance wide bandwidth by providing large coverage areas. In this paper, a dual-band array antenna for 5G communication is proposed. Beamforming is achieved using the phased array technique, which enhances directivity and radiation pattern towards the main beam. The dual-band antenna is designed with two C-shaped slots and a circle etched on a rectangular shape to reduce power loss. The rectangular patch dimension is 57 mm x 36.5 mm and 0.524 mm in thickness. This antenna has a directional radiation pattern. Some of the parameters like directivity, gain, VSWR, reflection coefficient, and impedance are measured to check antenna performance. The operating frequencies are 2.15 GHz and 4.99 GHz with a return loss of -42.6021 dB and -25.432 dB, respectively. The VSWR obtained at both bands are 1.01 and 1.11, respectively. The substrate material used is Rogers RO4003C with a dielectric loss of 3.38.

Review Paper

Future Network and Technology - IoT Healthcare Solutions and Applications

G. Ramachandran* , P. M. Murali **, S. Kannan ***
*-*** Department of Electronics and Communication Engineering, Vinayaka Mission's KirupanandaVariyar Engineering College, Salem,
Ramachandran, G., Murali, P. M., and Kannan, S. (2021). Future Network and Technology - IoT Healthcare Solutions and Applications. i-manager's Journal on Electronics Engineering, 11(4), 35-44. https://doi.org/10.26634/jele.11.4.15420

Abstract

The Internet of Things (IoT) is an exciting area of automation research that can have a significant impact on people's quality of life. IoT is an interconnection of computers, devices, people and environment through Internet connectivity. Lack of access to medical services, the growing geriatric population with chronic ailments and their need for remote monitoring, rising medical expenditures, and a need for telemedicine in underdeveloped nations all make the IoT an intriguing topic in healthcare. The idea of leveraging IoT-based sensor networks for healthcare applications has the potential to reduce human inefficiencies and errors. Due to the large amount of data that needs to be intelligently managed, a machine learning approach is critical to the efficient implementation of IoT-based wireless sensor networks (WSN). This article reviews the development and progress of healthcare and related applications with the implementation of AI-based IoT and WSN.