A Wireless Solution for Train Switchgear Contact Temperature Monitoring and Alarming System Based on Wireless Communication Technology

We present a temperature monitoring and warning system, which is based on wireless communi- cation technology and applied in train switchgear in this paper. The system is consists of three parts, including wireless temperature detection module, inter-vehicle transmission networks module and?remote monitoring server. The switchgear contact temperature data are collected via the wireless temperature detection module and exchanged in inter-vehicle wireless networking by Zigbee modules. Then the temperature of train switchgear cabinets can be monitored remotely through the GPRS wireless communication.

Remote monitoring system for maize seeding parameters based on Android and wireless communication

Most traditional maize seeding parameter monitoring devices use wired data transmission.The problems include wiring troubles,short transmission distances.And human-computer interaction display terminals are unique and usually customized rather than universal.A remote monitoring system for maize seeding parameters based on Android and wireless communication was developed in this study.The system used a single-chip microcomputer as the main controller and an infrared photoelectric sensor to capture seed information.The Android terminal application was used to set and display the seeder’s seed parameter information and monitor it.The Air202 communication module enabled remote data transmission,while the Global Positioning System(GPS)monitored the speed of the planter.By establishing a message queue telemetry transmission(MQTT)cloud served as a data freight station,data reception,storage and forwarding can be performed.Seeding parameters can generate Excel spreadsheets in real-time for easy data processing and storage.In order to verify the reliability of the system,the seeding parameter monitoring comparison test and the multi-terminal remote monitoring test were designed.The results of the seeding parameter monitoring comparison test showed that the monitoring system of this study had higher monitoring accuracy.The maximum average relative error of seeding parameter monitoring was 0.4%,which had high monitoring accuracy.The multi-terminal remote monitoring test showed that the monitoring system of this research can adapt many types of Android terminals,realize the wireless connection,and realize remote synchronous monitoring at different distances.This study provides a reference for intelligent remote monitoring and intelligent agriculture on unmanned farms.

Real-Time Monitoring System for Rotor Temperature of a Large Turbogenerator Based on SmartMesh IP Wireless Network Communication Technology

In this study,a real-time rotor temperature monitoring system for large turbogenerators using SmartMesh IP wireless network communication technology was designed and tested.The system is capable of providing comprehensive,accurate,continuous,and reliable real-time temperature monitoring for turbogenerators.Additionally,it has demonstrated satisfactory results in a real-time monitoring test of the rotor temperature of various famous large-scale turbogenerators and giant nuclear power half-speed turbogenerators designed and manufactured in China.The development and application of this wireless temperature measurement system would aid in improving the intelligent operation quality,safety,and stability of China’s large turbine generators and even the entire power system.

Wireless sensing system for environmental humidity and temperature monitoring

Aiming at the actual demand for monitoring environmental information,a wireless sensing system for temperature and relative humidity(RH)monitoring based on radio frequency(RF)technology and mobile network was designed.This paper introduces the architecture of the system.The system uses AVR micro controller unit(MCU),KYL-1020U RF module and SHT71 to complete real-time temperature and humidity monitoring,and uses SIM900A module to realize remote alarming and monitoring with short message system(SMS)through global system for mobile communication(GSM).Experimental results show that the designed system has good stability of measurement and real-time performance,and it can be used in some small temperature and humidity monitoring occasions.

A Wireless Distributed Condition Monitoring System Based on Bluetooth Technology

Based on the discussion of bluetooth and network technology, this paper proposed an entire framework of a wireless distributed monitoring system by combining the characteristics of industry application. The feasibility of putting this kind of system in practice is discussed. The wireless distributed monitoring system can enhance the performance of condition monitoring more than the traditional one used now.

Tire Pressure Monitoring System Using SoC and Low Power Design

This paper presents the tire pressure monitoring system (TPMS) by using the system on chip (SoC) mixed signals with the help of Bluetooth transmission and in advantage of low power consumption design. This is to monitor the variations in temperature and pressure of the vehicle’s tire, and the TPMS system is involved. It improves the driver’s safety by automatically detecting the tire pressure and temperature and then warning signal is sent to driver to take a measure, which prevents from accident. The proposed system of tire pressure monitoring system using SoC increases the speed of indication time to the driver by using mixed signals. The inflation of the tire can be avoided by preventing from high temperature and high pressure. Limitation of temperature and pressure in the previous system is also elongated i.e. temperature from 40℃ to 125℃ and pressure from 0 to 750 Kpa. Sensors, wireless communication (Bluetooth dongle) and SoC unit are used to design the low power TPMS. Quantitative results are taken and the analogy between temperature and pressure is also verified. The tested results proved by need of the practical system. Signal conditioning voltage and SoC unit is the trace for low power design TPMS. Finally, the performance of the system is tested and executed by using proteus software given as a real time application.

Research on Wireless Monitoring Technology of the Well Site Environment

Based on the characteristics of wireless communication technology and Wireless Sensor Network, this paper studies the well site environmental monitoring system. The relevant hardware and software of the system are designed to monitor the well site environment, thus preventing downhole accidents. The system uses the wireless ZigBee technology as the transmission mode, and combines the virtual instrument technology to design the upper machine interface. The test results show that the system can monitor the outdoor environment in real time. When the environmental parameters exceed the set value, the corresponding location of the LabVIEW interface will send an alarm.

Wireless sensing for a solar power system

Wireless sensing is an excellent approach for remotely operated solar power system.Not only being able to get the sensor data,such as voltage,current,and temperature,the system can also have a proper control for tracking the Sun and sensing real-time data from a controller.In order to absorb the maximum energy by solar cells,it needs to track the Sun with proper angles.Arduino,H-bridge motor driver circuit,and Direct Current(DC)motor are used to alter the tilt angle of the solar PhotoVoltaic(PV)panel following the Sun while the azimuth and the elevation angles are fixed at noon.Unlike the traditional way,the tilt rotation is proposed to be stepped hourly.The solar PV panel is tilted 7:5∘in advance of current time to the west to produce more output voltage during an hour.As a result,the system is simple while providing good solar-tracking results and efficient power outputs.

A 2Mbps Human Body Communication Transceiver Based on Body Antenna Effect

This paper presents a human body communication(HBC)transceiver for wireless body network applications.The transceiver employs on frequency shift keying(FSK)modulation and op-erates in 40 MHz-60 MHz which is the resonant frequency of the human body as an antenna.It achieves high performance and stability through establish passive microstrip line and via models and active device-models.The proposed transceiver is designed and fabricated by FR4 printed cir-cuit board(PCB)process,the transceiver has the ability of configurable data rate up to 2 Mbps and it achieves-86 dBm receiving sensitivity at 2 Mbps data rate.Meanwhile,the transceiver out-put power dynamics range is 34 dB.Furthermore,with a visual interaction interface,the transceiv-er can be agility use in a variety of scenarios.Its measurements are verified on human body.The result shows that the transceiver has ability to send data from person to person by relying on hu-man body antenna radiation.The transceiver shows great prospect in wireless body area networks(WBAN)for telemedicine and emergency communication.

A distributed pavement monitoring system based on Internet of Things

Pavement is an important part of transportation infrastructure.In order to maintain pavement before the damage and improve the service quality,it is necessary to develop an intelligent and durable pavement information monitoring system.However,the pavement dynamic response monitoring is highly costly,easily obsolete and statistically redundant.The emergence of the Internet of Things(IoT)technology promises to change that.In this paper,an architecture of a distributed road IoT monitoring system is proposed,which has an acquisition layer,a preprocessing layer,a processing layer,an interaction layer,an energy layer and a network layer.Then,a prototype wireless pavement vibration monitoring system based on the IoT is developed,which consists of a number of wireless sensing nodes,a gateway,a remote server and a browser.Finally,data preprocessing,wireless communication,time synchronization,data processing and visualization,which represent the key to an effective system,are tested and discussed.The prototype wireless pavement vibration monitoring system provides a viable scheme for upgrading the IoT system and its application in the road infrastructures.In the future,any smart road will have an IoT wireless monitoring system to monitor the traffic,environment,and pavement information,which help enable traffic guidance,signal control,danger warning,scientific maintenance decision-making.

基于物联网技术的图书馆数据中心环境监控系统

随着社会智能化、网络化的不断进步,图书馆纸质文献的数字化为用户提供了更加高效的服务。图书馆数据中心提供数据的存储、备份和网络服务等功能,是保障图书馆数字资源安全可靠运行的关键。为保障数据中心的稳定运行,设计了一套基于物联网技术的数据中心环境监控系统,该系统硬件主要基于STM32F103C8T6控制器和型号为E32V的4G传输模块,可以实时监测数据中心的温度、湿度、供电母线电流等信息,同时,对异常信息进行预警,并通过短信或微信消息通知管理员。

多功能家庭安全无线监控系统

应用基于短距离无线通信技术的无线收发芯片NRF9E5设计了集防盗、防火、防燃气泄露和紧急呼救等功能于一体的多功能家庭安全无线监控系统。系统运行稳定可靠、便于扩展,能有效避免多路报警数据包的碰撞问题。通过设定白天、夜晚和外出三种工作模式,实现家庭安全监控和报警,且能够以短信方式将报警信息通知用户以便及时采取措施。

基于无线传感器的嵌入式森林防火智能监测系统

针对传统林火监测技术的不足,将先进的无线传感器网络技术与嵌入式技术相结合并应用在森林防火监测中,从而提出了一种可增强林火识别率的智能森林防火监测系统。该系统采用无线网络协议Zig Bee来进行组网,具有组网简单、路径信息占用存储器容量小等优点,非常适合林区的监测环境,且可有效地降低系统的能耗和成本。实验表明:该系统具有运行稳定及组网灵活等特点,可对森林监测区域的环境信息进行实时监测。当发现火情时系统采用DV-Hop算法可自动实现准确定位并及时发送警报信息,从而为后续的林火扑救工作打下良好的基础,同时也为林业智能数字化建设工作提供了参考和借鉴。

交通路灯监控系统的无线传感网链状路由算法

在交通路灯监控系统中为节省网络节点能耗和降低数据传输时延,提出一种无线传感网链状路由算法(CRASMS)。该算法根据节点和监控区域的信息将监控区域分成若干个簇区域,在每一个簇区域中依次循环选择某个节点为簇头节点,通过簇头节点和传感节点的通信建立簇内星型网络,最终簇头节点接收传感节点数据,采用数据融合算法降低数据冗余,通过簇头节点间的多跳路由将数据传输到Sink节点并将用户端的指令传输到被控节点。仿真结果表明,CRASMS算法保持了PEGASIS算法在节点能耗方面和LEACH算法在传输时延方面的优点,克服了PEGASIS算法在传输时延方面和LEACH算法在节点能耗方面的不足,将网络平均节点能耗和平均数据传输时延保持在较低水平。在一定的条件下,CRASMS算法比LEACH和PEGASIS算法更优。

基于物联网的内河小型渔船动态信息监控系统设计

为规范内河流域渔业生产秩序,保障渔船作业安全,该文设计了基于物联网的内河小型渔船动态信息监控系统。该系统集成了无线传感器网络、远程信息传输、远端后台监控等多种技术方法。其中,无线传感器网络主要用于获取包括渔船位置、电捕鱼违法监测信息和渔船超载检测信息等渔业现场数据。依靠Zig Bee技术,该网络实现了对不同类别传感器数据的汇聚、判断以及远程播发。远程信息传输是利用GPRS/GSM移动通信网络与互联网传输技术,实现了多渔船作业信息向后台监控中心的实时传输。后台渔政监控中心,具有渔船在电子地图上的识别与定位,渔业生产的实时监控以及渔政执法的决策辅助等功能。该系统经测试,可满足内河流域作业渔船在实时监管和安全保障等方面的需求,提高了农业渔政管理的水平。

基于GPRS的茶园环境参数无线监测系统的设计

茶园一般建在比较偏远的山区,所以对茶树的管理以及获悉茶树周围每天的生长环境便是一大难题。针对这一情况,设计了一套基于GPRS茶园环境参数的无线监测系统,能够监测茶园大气温度、湿度,土壤温度、含水量以及光照强度等环境参数。该系统硬件部分包括太阳能供电、单片机控制、A/D转换、数据采集与处理、GPRS无线传输5个模块。软件通过KEIL C51进行C程序的编写与调试,主要包括环境参数的采集与处理、数据的无线传输及利用TCP进行网络通讯。采用LabVIEW 8.20开发环境进行上位机监测中心人机界面设计,调用LabVIEW里的文件输入输出函数建立数据库,对茶园环境参数进行每日每月定时的储存与访问,以便对茶树的生长环境进行连续监测。

基于WiFi通信的矿井监测无线传感器网络研究

针对现有矿井监测系统中无线传感器网络部署复杂、传输速率低、难以接入等问题,设计了一种基于WiFi通信的无线传感器网络矿井监测系统。该系统基于STM32芯片和Wi Fi芯片搭建矿井监测的硬件平台,利用802.11协议实现传感器节点的WiFi自组网通信,通过路由器节点汇聚传感器节点的测量参数并进行转发,最终传输至监测中心实现矿井监测。

基于无线网络的医疗健康监测系统探究

针对人口老龄化的特点以及各个公共医疗服务系统间的用户医疗信息不流通的局限性,提出一种新型医疗健康监测系统,可对用户的身体状况进行全面监测。通过使用含多种传感器的嵌入式医疗诊断设备监测收集医学数据,并利用多用式无线网络将这些实测数据发送到相应的健康监测中心,与用户的永久性电子病历相融合,由该中心的医疗专家对两组数据进行分析诊断,采取必要的措施来协调配合家庭医疗服务中心和区域医疗服务部门,以最佳最安全的方式迅速应对各种医疗状况。

基于ZigBee的远程医疗监护系统研究与实现

针对我国医疗资源紧缺及预防治疗体系不够完善的现状,基于ZigBee通信协议的无线传感器网络技术构建了一种基于社区范围实时监护的远程医疗监护系统。该系统由上位PC机、ZigBee无线单片机套件、传感器节点、传感器模块组成,该系统将测量到的各种生理信号通过无线传感器网络传输到医疗监护中心,以做出诊断救治。

基于电力线载波通信的城市灯饰控制系统

介绍了城市灯饰控制系统的组成、工作原理和关键技术。基于无线接力和电力载波通信技术的城市灯饰控制系统,通过对监控中心监控软件系统的操作,可实现城市灯饰的智能管理控制。电力线载波通信模块设计中采用意法半导体(ST)设计生产的新型电力线收发芯片ST7540,较好地解决了低压电力线载波传输中的干扰问题,稳定的试验数据和成功的小范围适用,表明本系统具有良好的应用前景。