scholarly journals Digital FM Transceiver Design and Construction using Microcontroller and I2C Interfacing Techniques

2020 ◽  
Vol 8 (5) ◽  
pp. 4525-4532
Keyword(s):  
Integrated Circuit ◽  
Local Area Network ◽  
Low Cost ◽  
Audio Signal ◽  
Digital Signal ◽  
Local Area ◽  
Full Duplex ◽  
Radio Receiver ◽  
Area Network ◽  
Radio Communication

Communication is very much important for every community and radio communication is one of the easiest and simple media to provide information. The project represents the full duplex communication mode of FM transceiver (Radio + Transmitter). This paper describes on how to build a short-range FM transmitter using microcontroller. The paper also describes on how to build a FM radio receiver using micro-controller. Through the FM transmitter we can transmit our voice and any audio signal while through the radio receiver listener can listen any FM broadcasting channel. This project is based on KTMicro IC KT0803K monolithic digital stereo FM transmitter and Phillips TEA5767 radio receiver module. The quality of transmission and radio reception can be improved by Digital Signal Processing and Intelligent Tuning System. The heart of this project is Arduino UNO micro-controller which controls slave devices by Inter-Integrated Circuit (I2C) communication. The transmitter and the receiver both supports digital tuning and Phase Locked Loop (PLL) concept is used for recovery of the signals. The transmitter of this digital FM transceiver can be used for making announcements in schools, colleges, industries, hospitals, and other places using a condenser mic amplifier circuit and share music with the FM listeners using audio input port of the FM transmitter module. The radio receiver of this transceiver is used for listening any local FM broadcasting channel. It can be also used in specialized application such as local area network. For the construction of the transceiver it requires some small and low cost external equipment’s.

Home Networking Technology Applied in Smart Home System

2013 ◽  
Vol 468 ◽  
pp. 141-144
Author(s):  
Su Hua Chen ◽  
Yong Guang Liu ◽  
Xu Fang
Keyword(s):  
Smart Home ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
High Reliability ◽  
Low Cost ◽  
Data Communication ◽  
Local Area ◽  
Area Network ◽  
Home Networking ◽  
The Right

Smart home system mainly consists of home networking, wireless local area network and external network, and with the advantages of low cost and high reliability, Zigbee wireless technology is the right choice for smart home system and the main part of home networking. The design of smart home system based on Zigbee is proposed, the Zigbeethe design process of the systemintelligent socket and data communication rule are elaborated. The system has been applied in smart community of Shaoxing Electric Power Bureau, which has good performances, high availability and reliability, better market prospects.

scholarly journals Design and implementation of seat occupancy detection system

2019 ◽  
Vol 37 (2) ◽  
pp. 26-42
Author(s):  
B. Kommey ◽  
E. O. Addo ◽  
K. A. Adjei
Keyword(s):  
Local Area Network ◽  
Detection System ◽  
Low Cost ◽  
Local Area ◽  
Base Station ◽  
Area Network ◽  
Design And Implementation ◽  
Loading Mode ◽  
Occupancy Detection ◽  
Occupancy Monitoring

Location of appropriate seats in seating areas of theaters remains a significant challenge that patrons of these enterprises face. There is therefore, the need for seat occupancy monitoring system to provide readily accessible seat occupancy information to clients and management of these halls. This paper presents the design and implementation of a low cost seat occupancy detection and display system which is capable of monitoring seat occupancy in halls efficiently.  The system uses capacitive seat sensors which is designed based on the loading mode technology. It detects the presence of a human occupant using a single electrode. Occupancy data is relayed to a WiFi-enabled microcontroller unit which processes the data and wirelessly transfers the processed data to a central base station over a local area network for graphical and numerical display. Commands are also transferred from the base station to the microcontroller units when needed. Theoretical and empirical results show that the system is able to achieve seat occupancy monitoring accurately, neatly and cost effectively.Keywords: Capacitive sensing, seat occupancy, sensor cluster, microstrip transmission line, Wi-Fi 

scholarly journals Time Domain Performance of Reconfigurable Filter Antenna for IR-UWB, WLAN, and WiMAX Applications

Electronics ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 1007
Author(s):  
Zhuohang Zhang ◽  
Zhongming Pan
Keyword(s):  
Time Domain ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Low Cost ◽  
Time Domain Analysis ◽  
Local Area ◽  
Ultra Wideband ◽  
Area Network ◽  
Compact Size ◽  
The Time Domain

A novel reconfigurable filter antenna with three ports for three dependent switchable states for impulse radio-ultrawideband (IR-UWB)/wireless local area network (WLAN)/worldwide interoperability for microwave access (WiMAX) applications is presented in this paper. Three positive-intrinsic-negative diodes, controlled by direct current, are employed to realize frequency reconfiguration of one ultra-wideband state and two narrowband states (2.4 GHz and 3.5 GHz). The time domain characteristic of the proposed antenna in the ultra-wideband state is studied, because of the features of the IR-UWB system. The time domain analysis shows that the reconfigurable filtering antenna in the wideband state performs similarly to the original UWB antenna. The compact size, low cost, and expanded reconfigurable filtering features make it suitable for IR-UWB systems that are integrated with WLAN/WiMAX communications.

Remote Monitoring System for Unattended Electromechanical Equipment Based on Internet

2012 ◽  
Vol 466-467 ◽  
pp. 1176-1180
Author(s):  
Gui Ping Wang ◽  
Er Dong Jia ◽  
Li Min Guan ◽  
Yun Ting Bai ◽  
Xiao Yan Ma
Keyword(s):  
Monitoring System ◽  
Remote Monitoring ◽  
Local Area Network ◽  
Low Cost ◽  
Warning System ◽  
Local Area ◽  
Area Network ◽  
Remote Monitoring System ◽  
Active Server Page ◽  
Electromechanical Equipment

The unattended electromechanical equipments are widely distributed in the harsh environment, which makes it difficult to construct the monitoring system. Therefore, this paper proposes a solution of the remote monitoring system based on Internet, which applies the VLAN (Virtual Local Area Network) technology in constructing the network. The network microprocessor STM32F107 is adopted to design a low-cost remote information terminal. The system software is designed based on B/S (Browser/Server) architecture by ASP (Active Server Page) technology, which implements SCADA (Supervisory Control and Data Acquisition) and pre-warning system for the unattended electromechanical equipments. The application shows that the system is stable, reliable and worth popularizing.

Sign in / Sign up

Export Citation Format

Share Document