Design and Implementation of Electronic Bus Stop Boards System Based on Wireless Communication Module

2014 ◽  
Vol 651-653 ◽  
pp. 2441-2444
Author(s):  
Cai Rong Zhang ◽  
Guo Liang Liu ◽  
Bin Wei
Keyword(s):  
Wireless Communication ◽  
Short Range ◽  
High Reliability ◽  
Low Cost ◽  
Long Distance ◽  
Current Time ◽  
Bus Stop ◽  
Passenger Travel ◽  
Communication Module ◽  
Distance Communication

To the convenience of passenger travel, a kind of electronic bus stop boards system is discussed in this paper, which can be considered as intelligent equipment based on wireless communication technology. The combination between short-range wireless and long-distance communication module, together with the microcontroller composes the electronic bus stop boards system. The electronic bus stop boards system indicates the number of stations away from passengers’ station board on different nearest buses, current time and real-time humiture. The test results showed that the system could realize short-range and long-distance communication function and display the necessary information. With the advantages of high reliability and efficiency at low cost, the electronic bus stop boards system has more practical popularized value to replace traditional intelligent station boards with GPS and GPRS by cheap wireless communication module.

Design and Implementation of Embedded Wireless Smart Gateway Based on PXA270

2012 ◽  
Vol 463-464 ◽  
pp. 1327-1331
Author(s):  
Hong Yan Kang
Keyword(s):  
Embedded System ◽  
Smart Home ◽  
High Reliability ◽  
Low Cost ◽  
Implementation Process ◽  
Communication Technologies ◽  
Long Distance ◽  
System A ◽  
Internal Network ◽  
Distance Communication

To release the connection problem between two different wireless communication technologies in conventional smart home system, a new embedded wireless smart based on PXA270, Zigbee and GPRS was designed. Web server was built on embedded system which uses PXA270 as core, and the exchange of information between internal network and the Internet via Zigbee module and GPRS module. ZigBee network mainly for short-distance communication and the GPRS network mainly for long-distance communications, so they can on the basis of complementary advantages to achieve a long-distance data transmission linked together by gateway. This paper presents the hardware architecture and the software implementation process. The experimental results show that this system has advantages of high reliability and low cost, so it can be applied to environmental monitoring and the smart home system

A Low-Power Low-Cost 780MHz CMOS FSK Receiver for Short-Range Wireless Communication

2016 ◽  
Vol 25 (2) ◽  
pp. 220-226 ◽  
Author(s):  
Yadong Yin ◽  
Lihong Zhang ◽  
Yuanting Yang
Keyword(s):  
Wireless Communication ◽  
Low Power ◽  
Short Range ◽  
Low Cost

Wireless Sensor Network Based Bridge Health Monitoring System for Long-Span Bridges

2014 ◽  
Vol 905 ◽  
pp. 575-579
Author(s):  
Jun Zu Sun ◽  
Qiao Huang
Keyword(s):  
Wireless Communication ◽  
Health Monitoring ◽  
Short Distance ◽  
Wireless Sensor ◽  
Long Distance ◽  
Health Monitoring System ◽  
Long Span Bridges ◽  
Bridge Health Monitoring ◽  
Long Span ◽  
Communication Module

With the convenience to add or replace sensors, to maintain and extend, a new solution of wireless sensor network based bridge health monitoring system for long-span bridges was proposed, which includes advanced and low power-consumption sensors, wide-range short-distance wireless communication module, high-speed long-distance wireless communication module, efficient and practical management software. 433 MHz industrial wireless module was selected for short-distance wireless communication among nodes and between nodes and gateways. 3G WCDMA was chosen for long-distance wireless communication between gateways and the control centers. Whole process controlled management software was specially developed.

LNG Receiving Terminal Associated With Gas Cycle Power Plants

1997 ◽  
Author(s):  
Paolo Chiesa
Keyword(s):  
Gas Turbines ◽  
Power Plants ◽  
Sea Water ◽  
Initial Conditions ◽  
High Reliability ◽  
Low Cost ◽  
Long Distance ◽  
Power Cycles ◽  
Economical Analysis ◽  
Combined Cycles

LNG regasification process needs a considerable quantity of thermal energy that is usually obtained by cooling sea water or by burning a fraction of the evaporated natural gas. These systems, though offering low cost and high reliability, are thermodynamically inefficient: they require energy for water pumping or fuel to provide heat and do not exploit the physical exergy related to the initial conditions of LNG to produce mechanical work. The present paper aims to assess the performances of various gas turbine based cycles which use the LNG regasification process as a low temperature heat sink for power cycles. In particular it will focus on the following configurations: • Closed loop gas cycles • Gas-gas combined cycles • Combined gas-organic Rankine cycles Two different sendout pressure (70 and 30 bar, corresponding respectively to the supply of long-distance pipelines or power plants based on heavy-duty gas turbines) are considered. Their performances are calculated and proper effectiveness indexes (e.g. thermal and exergetic efficiency) are introduced to carry out a comprehensive comparison among the systems considered. A simple economical analysis completes the discussion.

scholarly journals Strategies for Deploying a Sensor Network to Explore Planetary Lava Tubes

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6203
Author(s):  
Himangshu Kalita ◽  
Jekan Thangavelautham
Keyword(s):  
Low Cost ◽  
Line Of Sight ◽  
Communication Link ◽  
Wireless Power ◽  
Lava Tube ◽  
Long Distance ◽  
Lava Tubes ◽  
Distance Communication ◽  
High Resolution Images ◽  
Exploration Mission

Recently discovered pits on the surface of the Moon and Mars are theorized to be remnants of lava tubes, and their interior may be in pristine condition. Current landers and rovers are unable to access these areas of high interest. However, multiple small, low-cost robots that can utilize unconventional mobility through ballistic hopping can work as a team to explore these environments. In this work, we propose strategies for exploring these newly discovered Lunar and Martian pits with the help of a mother-daughter architecture for exploration. In this architecture, a highly capable rover or lander would tactically deploy several spherical robots (SphereX) that would hop into the rugged pit environments without risking the rover or lander. The SphereX robots would operate autonomously and perform science tasks, such as getting inside the pit entrance, obtaining high-resolution images, and generating 3D maps of the environment. The SphereX robot utilizes the rover or lander’s resources, including the power to recharge and a long-distance communication link to Earth. Multiple SphereX robots would be placed along the theorized caves/lava tube to maintain a direct line-of-sight connection link from the rover/lander to the team of robots inside. This direct line-of-sight connection link can be used for multi-hop communication and wireless power transfer to sustain the exploration mission for longer durations and even lay a foundation for future high-risk missions.

System Design and Implementation of a Transient-Motion-Powered IoT Sensor Node

2020 ◽  
Author(s):  
Xin Li ◽  
Hong Tang ◽  
Junrui Liang
Keyword(s):  
Wireless Communication ◽  
Embedded System ◽  
Motion Detection ◽  
Sensor Node ◽  
Low Cost ◽  
Successful Implementation ◽  
Interface Circuit ◽  
Transient Motion ◽  
Communication Module ◽  
Self Powered

Abstract In this paper, we introduce ViPSN-E: a transient-motion-powered IoT sensor node. It carries out motion detection and wireless communication by making good use of the energy harvested from an instantaneous motion. In our design, a piezo-magneto-elastic structure, which is composed of a low-cost piezoelectric cantilever and a pair of magnets, is used to induce a plucking excitation and power generation under a transient and one-way movement. An energy management circuit, which is composed of a self-powered synchronized switch harvesting on inductor (SP-SSHI) interface circuit and a voltage regulator is utilized for efficient energy conversion. Through the sophisticated collaboration between mechatronic design and computer program, the motion information can also be identified and sent out by a wireless communication module. The cyber-electromechanical synergy among mechanical dynamics, power conditioning circuit, and the low-power embedded system is emphasized towards the successful implementation of such a motion-powered IoT device. The prototyped ViPSN-E has done a good job by making good use of the energy associated with each transient plucking motion. With only one plucking excitation, the system can realize motion detection and several rounds of wire-less transmission. The study on ViPSN-E provides valuable guidance towards the self-powered ubiquitous motion-sensing systems.

Node Localization Technology in Wireless Sensor Networks for Coal Mine Security Monitoring

2013 ◽  
Vol 748 ◽  
pp. 560-564
Author(s):  
Guang Xing Zhou ◽  
Yun Tao Yue ◽  
Ming Xue Li ◽  
Yu Guang Chen
Keyword(s):  
Low Cost ◽  
Node Localization ◽  
Long Distance ◽  
Simulation Experiments ◽  
Security Monitoring ◽  
Communication Module ◽  
Positioning Method ◽  
Distance Difference ◽  
Location Algorithm ◽  
Beacon Node

This paper proposed a location algorithm based on nodes distance difference, it gets the distance difference from the blind node to every beacon node by wireless communication module Rf grouping, then, makes use of the improved Trilateral positioning method to work out Node coordinates, so as to realize the node localization of long-distance range, precision controlled, low-cost, and to analyze the positioning performance. The simulation experiments shows this algorithm has high feasibility and positioning performance, and it is also a complement of WSN Positioning technology.

Design of the Wireless Monitoring System Based on CC1100 in Greenhouse

2014 ◽  
Vol 945-949 ◽  
pp. 2709-2712
Author(s):  
Jie Bao ◽  
Hong Bin Chen ◽  
Ren Xia Ou ◽  
Jie Wu
Keyword(s):  
Carbon Dioxide ◽  
Control System ◽  
Wireless Communication ◽  
Light Intensity ◽  
Monitoring System ◽  
Small Volume ◽  
Low Cost ◽  
Carbon Dioxide Concentration ◽  
Wireless Monitoring ◽  
Communication Module

For real-time monitoring of the factors in the greenhouses such as temperature, humidity, carbon dioxide concentration, light intensity. Design for the greenhouse wireless monitoring system based on CC1100 chip. To realize data acquisition and transmission via the combination of the CC1100 wireless communication module and MCU control system. After testing the system has the characteristics of small volume, simple operation, low cost and strong practicability etc.

Temperature and Humidity Measuring System Based on ZigBee and GPRS

2014 ◽  
Vol 716-717 ◽  
pp. 1068-1071
Author(s):  
Mao Fa Gong ◽  
Fan Jiao Yin ◽  
Qiang Gu ◽  
Bao Ye Song ◽  
Yong Jin Yu
Keyword(s):  
Wireless Communication ◽  
Communication Technology ◽  
Agricultural Production ◽  
Short Distance ◽  
Low Cost ◽  
Measuring System ◽  
Long Distance ◽  
Agricultural Producers ◽  
Temperature And Humidity ◽  
Solar Powered

It is important for modern agricultural production to measure temperature and humidity in a real time way. This paper combined the short-distance wireless communication technology ZigBee with the long-distance wireless communication technology GPRS to design a solar-powered temperature and humidity measuring system. The system is easy to install and can run in low cost, so it is especially suitable for small and medium agricultural producers.

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