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With the improvement of electrical equipment performance and the popularization of intelligence, electrical monitoring has gradually moved from traditional decentralized management to intelligent centralized monitoring. Under this trend, this article develops a centralized electrical equipment management system that meets the needs of the subway commercial sector to improve managment quality and reduce maintenance costs. Starting from the perspective of business needs, this article analyzes the development ideas of the system, introduces relevant modules and upper computer development achievements, and proposes expansion directions and optimization suggestions.
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随着电气设备性能的提升和智能化的普及,电气监控逐步由传统分散管理转为智能集中监控。在该趋势引领下,本文开发一套适配地铁商业板块需求的电气设备集中监控系统,以提升经营品质,减少运维成本。本文从商业需求角度入手,剖析该系统开发思路,介绍相关模块及上位机开发成果,并给出拓展方向及优化建议。
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林捷(1986—),男,广东省深圳市人,本科,高级电气工程师,主要从事企业电气设备智能化及电力监控方面的管理及研究工作。
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林捷(1986—),男,广东省深圳市人,本科,高级电气工程师,主要从事企业电气设备智能化及电力监控方面的管理及研究工作。
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林捷(1986—),男,广东省深圳市人,本科,高级电气工程师,主要从事企业电气设备智能化及电力监控方面的管理及研究工作。
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| 方案描述 | 优点 | 缺点 |
| 采用光纤、网线、串口等有线互连 | 信号稳定、抗干扰能力强、延迟低 | 耗材大,搭建、改造成本高 |
| 采用ISM、WiFi、蓝牙等无线互连 | 成本低、组网灵活,可一对多通信 | 抗干扰能力较差,强磁场下易失真[3] |
), ArticleFig(id=1194653271424999747, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635566558974330, language=CN, label=表1, caption=
两种互连方案对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案描述 | 优点 | 缺点 |
| 采用光纤、网线、串口等有线互连 | 信号稳定、抗干扰能力强、延迟低 | 耗材大,搭建、改造成本高 |
| 采用ISM、WiFi、蓝牙等无线互连 | 成本低、组网灵活,可一对多通信 | 抗干扰能力较差,强磁场下易失真[3] |
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| 算法类型 | 优点 | 缺点 |
单次重复 多发算法 | 指令短、响应快、算法简单 | 容错差,强磁环境下报文丢弃多,执行效率低 |
脉冲调制 编码算法 | 抗干扰能力强、脉冲能量强,传输远 | 效率低,指令只能一对一传输,不能快速分发 |
自带校验 编码算法 | 正确率高、传输效率高 | 发送前与接收后均须解析验算,对硬件要求高 |
), ArticleFig(id=1194653271601160517, tenantId=1146029695717560320, journalId=1190235702286704641, articleId=1194635566558974330, language=CN, label=表2, caption=
3种容错纠错算法对比
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| 算法类型 | 优点 | 缺点 |
单次重复 多发算法 | 指令短、响应快、算法简单 | 容错差,强磁环境下报文丢弃多,执行效率低 |
脉冲调制 编码算法 | 抗干扰能力强、脉冲能量强,传输远 | 效率低,指令只能一对一传输,不能快速分发 |
自带校验 编码算法 | 正确率高、传输效率高 | 发送前与接收后均须解析验算,对硬件要求高 |
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| 协议类型 | 优点 | 缺点 |
| TCP/IP | 可多路复用、架构灵活 | 协议穿透复杂,实时性、安全性差 |
| ModBus-RTU | 硬件简单,实时性强,可一对多通信,带CRC | 主从关系固定,网络拓扑性能差,不具备延展性[6] |
| IEC 103、104 | 性能最大限度满足行业需求 | 有行业壁垒,兼容性差,移植难度大 |
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3种协议对比
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| 协议类型 | 优点 | 缺点 |
| TCP/IP | 可多路复用、架构灵活 | 协议穿透复杂,实时性、安全性差 |
| ModBus-RTU | 硬件简单,实时性强,可一对多通信,带CRC | 主从关系固定,网络拓扑性能差,不具备延展性[6] |
| IEC 103、104 | 性能最大限度满足行业需求 | 有行业壁垒,兼容性差,移植难度大 |
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