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针对近些年煤矿瓦斯监测不够精确等问题,本文结合无线传感器网络技术,提出了基于无线传感器网络的煤矿瓦斯监测系统的设计方法。根据该设计思想将系统分为信息采集、传送、监控和路由设计等几部分。针对现场实际的需求,提出固定节点和移动节点的实现方法并对两类传感器结点进行了软硬件设计。结点硬件部分主要包括:控制模块、传感器模块、无线通信模块和电源模块。软件部分主要包括数据采集采集模块与处理模块和数据传输模块,并给出了各模块的流程图。 相似文献
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针对煤矿运行着的生产调度系统、安全监测系统、人员定位系统自成体系且难以形成统一的网络信息平台的问题,提出了以吉比特工业以太网为基础、井下无线传感网拓展为煤矿物联网。煤矿物联网由两个逻辑独立的单环组成,两单环间反向传输数据并可以实现自动切换。利用Zig Bee技术实现井下已知节点和未知节点接入,加装接口卡协调已有系统与新增系统,从而实现人员及设备的无线接入。 相似文献
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本系统应用LabVIEW软件和ZigBee技术设计了温室大棚环境参数监控系统。系统以CC2530为控制核心,对传感器终端节点和协调器节点进行了软硬件设计;使用LabVIEW设计了上位机控制系统,其分为自动和手动两种控制模式,并实现了远程监控功能。该系统通过现场测试,运行稳定,提高了环境参数控制精度,具有一定的推广性。 相似文献
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基于博弈论的井下监测网QoS路由算法研究 总被引:1,自引:0,他引:1
构建煤矿井下无线视频监控系统可有效弥补有线监控系统的不足,以无线多媒体传感器为网络节点设计了煤矿井下无线视频监控系统,针对传感器存在潜在的自私性特点,引入博弈理论思想,建立一种无线多媒体传感器网络QOS路由的博弈模型,并将其融入到路由协议中,提出了一种博弈路由协议,仿真实验表明能够有效均衡节点能量消耗,克服传感器自私性... 相似文献
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基于ZigBee的煤矿监控网络节点设计 总被引:3,自引:1,他引:2
针对矿用监控设备采用有线方式传输信号存在的弊端,煤矿实时监控采用基于Zigbee的无线传感器网络技术.根据无线传感器网络工作原理和节点体系架构,设计了以CC2430为核心的传感器网络节点.该节点装置能够完成瓦斯浓度监测、井下人员的实时信息采集和定位等,并详细给出了这种传感器节点的硬件设计和软件流程. 相似文献
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煤矿安全问题一直是制约煤矿发展的关键因素,解决该问题的办法之一就是建立一套可靠的监控系统,实现智能化管理。本文利用高性能微处理器S3C2440A采集矿井下重要环境点的图像、有害气体等数据。进行相关的算法处理后传送给附近的ZigBee节点,然后通过ZigBee节点组成的传感网络进行无线传输,最终在控制端实现对每个节点的实时监控。结果表明,本文设计的智能化矿井监控系统能大大提高矿井的管理力度,降低矿井下的事故发生率,提高工作效率。 相似文献
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井下基于无线传感器网络的环境监测系统设计 总被引:1,自引:0,他引:1
本文提出了利用无线传感器网络进行煤矿井下环境探测的方法,设计了适用于煤矿井下环境探测的无线传感器网络的系统整体框架和各组成部分、拓扑结构和网络协议。该系统可以实时探测各种环境信息,准确反映井下环境状态,从而提高煤矿环境监控系统的可靠性和安全性。 相似文献
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设计并实现了基于无线传感器网络技术的模块化和低功耗的麦冬多元环境数据监测与自动灌溉系统,提出了传感器节点功能与电源相互独立的模块化节点硬件方案,构建了多维度的麦冬田间环境数据监测无线传感器网络以及针对麦冬的灌溉决策模型。系统将采集的麦冬农田环境数据(土壤湿度、地表温度等)结合气象台的温度、湿度以及降雨量等气象数据作为灌溉模型的输入量,进行灌溉决策分析,实现了对麦冬生长环境参数的精确监测和自动灌溉控制。通过在麦冬大田的实际测试结果表明,系统各项功能运行稳定可靠,适用于大中型中药材种植的田间环境连续监测与灌溉控制。 相似文献
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针对原方案中第一个交叉结点发送假包而不考虑该节点处真实数据流量的问题,提出在第一个交叉结点处进行流量监控,并根据监控的真实数据流量值来决定发往每个假的Sink节点的假包量的方案,并且假包概率传输的同时,当假包传输跳数大于真实数据包到达Sink节点跳数时,就自动丢弃。实验结果表明,网络数据传输的安全时间有了明显提高,但是需要牺牲少许网络能量开销。 相似文献
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We consider providing presence service for duty-cycled wireless sensor networks through a multihop approach. The presence
service is to ensure automatic network monitoring by which each node would know whether the sink node is reachable or not.
Towards providing such presence service, we tackle three problems: 1) efficient neighbor discovery due to not-always-awake
nature of duty-cycling and the mobile environment, 2) light presence message passing from the sink node to all reachable nodes
given broadcasting is expensive and difficult in an embedded duty-cycling network, and 3) automatic network monitoring if
there is node failure and network partition. In our protocol, in order to save power consumption, an online node which is
reachable from the sink node only book-keeps the broadcast schedule of its parent in a breadth-first-search spanning tree
in order to trace the online status all along. The offline node which is not reachable from the sink node stays awake periodically
based on quorum-based wakeup scheduling, and probes the beacons which may come from online nodes. The presence protocol can
automatically detect link failure or network partition, and it can also automatically recover online status for each sensor
node if there is a path to the sink node, which is significant for applications that are sensitive to end-to-end latency constraints.
The presence protocol proposed is implemented through a layered approach so that it is independent from any specific MAC and
routing protocols. We make extensive simulations in order to validate the energy efficiency and reliability of our design. 相似文献
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多媒体光纤工业电视监控系统 总被引:6,自引:1,他引:5
文中分析了多媒体技术在工业监控系统方面的应用,特别是煤矿中的实际应用,重点讨论了多媒体光纤工业电视系统的组成,特点及功能,并提出与其它监测,监控系统联网,形成了多媒体光纤工业电视监控系统。 相似文献
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针对现有煤矿监控系统的数据传输还主要采用主从式、基带传输或FSK传输的通信方式,使得通信网络结构单一、监控设备冗余度不高、危险控制响应时间慢等缺点,本文提出新一代煤矿监控系统研究,论文建立了新一代煤矿监控系统结构模型,并对系统关键技术进行了深入研究,研究了基于现场总线的多主分站通信技术及监控软件技术,然后对系统进行了井下现场工业性试验与测试,结果表明,新一代煤矿监控系统无需上位机便可自动完成分站之间的对等通信与控制功能,响应时间小于5 s,且网络结构可靠性高,系统运行稳定,断开冗余线路的任何一根光纤,自恢复时间不大于20 ms。 相似文献
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Innovative and emerging developments in sensor networks are proven to be the backbone for real‐time applications such as satellite communications, military and border area surveillance systems, health care systems, traffic monitoring systems, seismic and underwater monitoring systems, and agriculture and habitat environment systems. Coverage and clustering techniques enable the sensor network to operate in group‐based and region‐based communication and thus save the node energy. Energy‐efficient protocols save the node energy and increase the network life cycle in a resource‐constrained sensor network. Cluster head (CH) node manages and controls the operations such as network topology, coverage area, and routing paths (multi‐paths and fault‐tolerant paths) of the network. In this paper, we present deterministic K‐means secure coverage clustering (K‐SCC) with periodic authentication. The proposed protocol uses coverage clustering technique with periodic authentication between the CH node and sensor nodes to establish the secure channel in the network. Maximum cover of K nodes is maintained in the secure coverage cluster to achieve authenticated communication between the sensor nodes in the network. The proposed K‐SCC protocol is compared with the existing protocols such as deterministic‐SCC and random‐SCC protocols. Simulation results indicate that the proposed K‐SCC protocol achieves an average of 84% coverage ratio (cluster/sensor node ratio) as compared with 62% coverage ratio in the existing SCC protocols. Simulations also indicate that the proposed K‐SCC protocol consumes 20% less energy as compared with the existing SCC protocol. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
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针对煤矿地理环境复杂、井下作业环境恶劣,难以有效地对煤矿井下开采环境进行有效地监测和管理,设计并实现了煤矿安全生产监测管理系统。该系统采用MFC开发语言和基于GIS与组态软件开发技术,对目前的主从式监测管理系统进行了升级,对煤矿生产过程中的基本非安全因素可以进行全面地监控。该系统实现了分散煤矿信息采集的自动化,具有及时、高效、准确、基建投资少、运行成本低等特点,具有显著的社会效益和较大的经济效益。 相似文献
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The existing uneven clustering algorithm have disadvantages of coal mine with long strip structure. This paper proposed a UCEB-CMF protocol to improve the safety of coal mine monitoring system. The new protocol optimize the selection mechanism of the cluster head, avoid the lower residual energy nodes become the cluster head. Improve the calculation method of non-uniform competition radius and the competition way of the candidate cluster head, so the new protocol can ensure the node which close to the Sink node and has the more energy to priority become the cluster head. Propose a multipath routing algorithm according to the characteristics of the node in the coal mine goaf is die easily, it can ensure the persistence of the data transmission. Simulation results show that the routing protocol effectively balances the energy consumption among cluster heads and achieves an obvious improvement on the network life time. 相似文献