CN102025148A - 具有数据中继功能的电力线网络系统 - Google Patents

具有数据中继功能的电力线网络系统 Download PDF

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CN102025148A
CN102025148A CN2009101775088A CN200910177508A CN102025148A CN 102025148 A CN102025148 A CN 102025148A CN 2009101775088 A CN2009101775088 A CN 2009101775088A CN 200910177508 A CN200910177508 A CN 200910177508A CN 102025148 A CN102025148 A CN 102025148A
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power
power line
processor
data
unit
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张哲诚
蒋浩然
施智评
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Acbel Polytech Inc
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Acbel Polytech Inc
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/54Systems for transmission via power distribution lines
    • H04B3/58Repeater circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/54Systems for transmission via power distribution lines
    • H04B3/544Setting up communications; Call and signalling arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B2203/00Indexing scheme relating to line transmission systems
    • H04B2203/54Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429Applications for powerline communications
    • H04B2203/5445Local network

Abstract

本发明是关于一种具有数据中继功能的电力线网络系统,包含有复数电力监控区域及至少一中继装置,各中继装置则连接于两相邻的电力监控区域,即与两相邻的电力监控区域中的各电监控装置是通过电力线相互连接;其中该中继装置包含有二组调变频带不同的中继单元,以将其各自邻近电力监控区的各电力监控点所发出的电力线讯号的数据予以撷取出,再由另一组中继单元接收后调变为另一组频带后传送至另一电力监控区的电力在线;如此不仅能确保数据传送不因传送距离过长而产生误读的问题,更能确保相邻不同电力监控区的讯号不会相互干扰。

Description

具有数据中继功能的电力线网络系统
技术领域
本发明是关于一种电力线网络系统,尤指一种能确保数据传送正确性的电力线网络系统。
背景技术
电力线网络通讯通过既有布好的电力线作为数据传送的网络媒介,而不必另外布设网络线,因此电力线网络的发展有助于大范围,且非计算机型式的网络节点的相关应用。
目前许多室内外的电气产品均朝向计算机化发展趋势加以设计,以增添更多功能提供使用的方便性,因此配合目前电力线网络技术,则能对这些电气产品更容易地进行远程监视或监控行为。举例来说,如内建有电力监视功能的LED路灯、具有自动读表功能的电表或信息家电等。
然而,电力线网络虽可提供远程监视或监控功能,但利用既有电力线进行监视或监控数据的传输,容易受到噪声干扰,而且一旦远程与待监视本地端距离相差太远,则其中有用的数据讯号强度即容易衰减,造成不正确数据误读的缺点。
因此目前已有一种模拟式中继装置,主要于电力线的适当长度串接该模拟式中继装置,由于中继装置将电力讯号中的数据讯号予以放大,以确保本地及远程通过电力线进行数据传输的数据正确性。然而,模拟式中继装置必须将数据讯号予以放大,故必须串接于电力在线,然而于既有电力线串接任何装置都是耗工且费时的程序,而且应用于大功率电力线区域更必须使用高功率的电子组件,增加整个制作成本,因此对于确保电力线数据传输可靠度如何提升仍有待进一步提出有效解决方式。
发明内容
本发明主要目的是提供一种具数据中继功能的电力线网络系统,能确保数据传送正确性,提高通讯的可靠度。
欲达上述目的所使用的主要技术手段是令该电力线网络系统包含有复数电力监控区域及至少一中继装置;其中复数电力监控区域是以电力线加以连接,以提供工作电力。又,各电力监控区域包含有至少一电力监控装置,而各中继装置则连接于两相邻的电力监控区域,即与两相邻的电力监控区域中的各电监控装置通过电力线相互连接;其中:
上述第一中继单元通过电力线连接相邻电力监控区域的其中一电力监控区域的至少一电力监控装置,以将该至少一电力监控装置传送至电力在线的数据撷取出来后输出,又该第一中继单元接收第二中继单元传来的数据,经放大后以第一载波频带加以调变传送至电力在线;
上述第二中继单元是与第一中继单元联机以收发数据,又该第二中继单元通过电力线连接相邻电力监控区域的其中一电力监控区域的至少一电力监控装置,以将该至少一电力监控装置传送至电力在线的数据撷取出来后输出至第一中继单元,又该第二中继单元接收第一中继单元传来的数据,经放大后以第二载波频带加以调变传送至电力在线,该第一及第二载频波并不相同。
上述本发明中继装置利用二组不同调变频带的第一及第二中继单元,以将其各自邻近电力监控区的各电力监控点所发出的电力线讯号的数据予以撷取出,再由另一组中继单元接收后调变为第二频带后传送至另一电力监控区的电力在线,因此中继装置不必串接于电力在线;如此一来,不仅能确保数据传送不因传送距离过长而产生误读的问题,更能确保相邻不同电力监控区的讯号不会相互干扰。
附图说明
图1为本发明电力线网络通讯系统的系统架构图;
图2为本发明应用于路灯电力监控的系统架构图;
图3为本发明中继装置的电路方块图;
图4为本发明电力监控装置的电路方块图。
附图中,各标号所代表的部件列表如下:
(10)(10’)电力监控区域    (20)电力监控装置
(21)电力状态检知单元      (22)模拟数字转换单元
(23)处理器                (24)电力线通讯模块
(241)数字信号处理器       (242)第一滤波器
(243)变压器               (244)功率放大器
(245)第二滤波器           (25)保护电路
(30)中继装置              (31)第一中继单元
(32)第二中继单元          (33)变压器
(34)数字信号处理器        (341)第一滤波器
(342)第二滤波器           (343)功率放大器
(35)数字通讯接口          (40)路灯
(41)电力管理终端机        (111)电力线
具体实施方式
请参阅图1所示,为本发明电力线网络系统的系统架构图,其包含有复数电力监控区域(10)(10’)及至少一中继装置(30);其中复数电力监控区域(10)(10’)以电力线网络(11)加以连接,以提供工作电力。又,各电力监控区域(10)(10’)包含有至少一电力监控装置(20),而各中继装置(30)则连接于两相邻的电力监控区域(10)(10’),即与两相邻的电力监控区域(10)(10’)中的各电监控装置(20)是通过电力线(111)相互连接。
请配合参阅图2及图3所示,为本发明电力线网络系统应用于路灯(40)电力管理的一较佳实施例,其中各中继装置(30)包含有第一及第二中继单元(31)(32)。
上述第一中继单元(31)是通过电力线(111)连接相邻电力监控区域(10)(10’)之其中一电力监控区域(10)的至少一电力监控装置(20),以将该至少一电力监控装置(20)传送至电力线(111)上的数据撷取出来,又该第一中继单元(31)接收第二中继单元(32)传来的数据,经放大后以第一载波频带(Frequency Band A;FBA)加以调变传送至电力线(111)上。
上述第二中继单元(32)是与第一中继单元(31)联机以收发数据,又该第二中继单元(32)通过电力线(111)连接相邻电力监控区域(10)(10’)的其中一电力监控区域(10’)的至少一电力监控装置(20),以将该至少一电力监控装置(20)传送至电力线(111)上的数据撷取出来后输出至第一中继单元(31),又该第二中继单元(32)接收第一中继单元(31)传来的数据,经放大后以第二载波频带(Frequency Band B;FAB)加以调变传送至电力线(111)上,该第一及第二载波频带并不相同。举例来说,第一频带可为60-90kHz,其中60及70kHz用作调变接收频率,而80及90kHz作为传送频率,反之亦可;又第二频带可为110-140kHz,其中110及140kHz用作调变接收频率,而130及140kHz作为传送频率,反之亦可;是以,当两相邻电力监控区域(10)(10’)的两监控装置(20)进行双向通讯时,其电力在线即包含有四组不同频率数据讯号,将讯号干扰状态降至最低。
上述第一及第二中继单元(31)(32)分别包含有:
一变压器(33),用以耦合连接至该电力线(111);
一数字信号处理器(34),其输入端是通过二第一滤波器(341)电连接至该变压器(33),以接收来自电力线(111)的二组不同调变频率的外部数据讯号,又该数字信号处理器(34)的输出端是通过二第二滤波器(342)及一功率放大器(343)连接至该变压器(33),以将数据加以处理并调变,由变压器(33)耦合至电力线(111)对外传送二组不同调变频率的数据讯号;其中各第一滤波器(341)为一带通滤波器,而其带通频率分别对应二组不同的接收频率(F1)(F2),而各第二滤波器(342)为一低通滤波器,其低通频率对应二组不同的传送收频率;及
一数字通讯接口(35),是供相同通讯标准的数字通讯接口连接,以收发数据;在本实施例中该数字通讯接口(35)为UART,也可为RS232或USB等串行通讯接口,且该UART接口直接整合于数字信号处理器(34)内。
本发明中继装置(30)利用二组调变频带(FBA/FBB)不同的第一及第二中继单元(31)(32),以将其各自邻近电力监控区(10)(10’)的各电力监控点所发出的电力线讯号的数据予以撷取出,再由另一组中继单元(32)(31)接收后调变为另一频带后传送至另一电力监控区的电力线(111)上;如此一来,不仅能确保数据传送不因传送距离过长而产生误读的问题,更能确保相邻不同电力监控区的讯号不会相互干扰。
请同时参阅图2及图4所示,为本发明应用于路灯(40)的电力监控装置的电路方块图,其包含有:
一电力状态检知单元(25),耦接至电力线(111)上,取得电力线(111)的电压及电流状态后输出;
一模拟数字转换单元(22),连接至该电力状态检知单元(21)的输出端,以转换其模拟检知讯号为数字讯号后输出;
一处理器(23),连接至该模拟数字转换单元(22)的输出端,以取得电压及电流数值;
一电力线通讯模块(24),连接至该处理器(23),以取得该处理器(23)输出电压及电流数值,将其调变成模拟讯号后加载电力线(111)中,又该电力线通讯模块(24)也接收电力线(111)上的模拟讯号,并将其中数据撷取出来后输出至处理器(23)中;其中该调变频带对应其所属电力监控区对应中继单元的调变频带(FBA/FBB);在本实施例中该电力线通讯模块(24)架构与第一及第二中继单元相同,均包含有一数字信号处理器(241)、第一滤波器(242)、一变压器(243)、一功率放大器(244)及一第二滤波器(245);及
一保护电路(25),串接于电力线(111)上,其控制端连接至该处理器(23)的输出端,在处理器依据接收外部传来数据资料启闭该保护电路(25);在本实施例中该保护电路(25)为一电力开关。
上述各路灯的电力监控装置(20)是通过电力状态检知单元(21)检知路灯(40)的用电状态,并通过电力通讯模块(24)对外传送电力数据至电力线(111)时,若配合电力管理终端机(41)设置在其它电力监控区域(10’),则会由邻近路灯(40)所属电力监控区域(10)的中继装置(30)加以接收,并由其中对应调变频带的中继单元将其中电力数据撷取后由另一中继单元调变成另一频带讯号后加载其它电力监控区域,最终传送至电力管理终端机(41)。又该电力管理终端机(41)如判断特定路灯(40)有电力异常,则也可通过电力线网络(11)将断电命令数据调变后加载电力线(111)中,同样通过中继装置(30)处理而顺利将此一断电命令传送至对应路灯(40)的电力监控装置(20)的处理器(23),再由处理器(23)判继此一断电命令后启动该保护电路,将路灯的电力暂时中断。
诚如上述,本发明主要以数字方式进行电力线数据讯号的读取,再以不同频带载波频带加载电力线中,由于数据经由中继装置的处理后,电力线网络上距离相距过远的电力监控点均能正确地取得相互的数据,避免因为电力线天生噪声干扰情况多而造成数据误读的问题;此外,本发明的中继装置不必串接于电力在线,故可免除变更既有电力线的耗时费力的步骤;因此,本发明能提供如路灯或电表等电力监控点的应用。

Claims (10)

1.一种具有数据中继功能的电力线网络系统,其特征在于,包括:
复数电力监控区域,复数电力监控区域是以电力线网络相互连接,又各电力监控区域包含至少一电力监控点;及
至少一中继装置,各中继装置则连接于两相邻的电力监控区域,即与两相邻的电力监控区域中的各电监控装置通过电力线相互连接;其中各中继装置包含有一第一及第二中继单元;其中
所述第一中继单元是通过电力线连接相邻电力监控区域的其中一电力监控区域的至少一电力监控装置,以将该至少一电力监控装置传送至电力在线的数据撷取出来后输出,又该第一中继单元接收第二中继单元传来的数据,经放大后以第一载波频带加以调变传送至电力在线;及
所述第二中继单元是与第一中继单元联机以收发数据,又该第二中继单元透过电力线连接相邻电力监控区域的其中一电力监控区域的至少一电力监控装置,以将该至少一电力监控装置传送至电力在线的数据撷取出来后输出至第一中继单元,又该第二中继单元接收第一中继单元传来的数据,经放大后以第二载波频带加以调变传送至电力在线,该第一及第二载频波并不相同。
2.如权利要求1所述具有数据中继功能的电力线网络系统,其特征在于,所述第一及第二载波频带分别包有二组接收频率及二组调变频率。
3.如权利要求1或2所述具有数据中继功能的电力线网络系统,其特征在于,所述第一及第二中继单元各包含有:
一变压器,耦合连接于至电力线;
一数字信号处理器,其输入端是通过一第一滤波器电连接至该变压器,以取得电力线的外部数据讯号,又该数字信号处理器的输出端是通过一第二滤波器及一功率放大器连接至该变压器,以将数据加以处理并调变,由该变压器耦合至电力线对外传送;及
一数字通讯接口,供相同通讯标准的数字通讯接口连接,以收发数据。
4.如权利要求3所述具有数据中继功能的电力线网络系统,其特征在于,
该第一中继单元的第一滤波器为一带通滤波器,其带通频带对应第一调变频带;及
该第二中继单元的第一滤波器为一带通滤波器,其带通频带对应第二调变频带。
5.如权利要求4所述具有数据中继功能的电力线网络系统,其特征在于,该数字通讯接口直接整合于数字信号处理器内。
6.如权利要求1或2所述具有数据中继功能的电力线网络系统,其特征在于,各电力监控区的各路灯电力监控装置包含有:
一电力状态检知单元,耦接至电力在线,取得电力线的电压及电流状态后输出;
一模拟数字转换单元,连接至该电力状态检知单元的输出端,以转换其模拟检知讯号为数字讯号后输出;
一处理器,连接至该模拟数字转换单元的输出端,以取得电压及电流数值;
一电力线通讯模块,连接至该处理器,以取得该处理器输出电压及电流数值,将其调变成模拟讯号后加载电力线中,又该电力线通讯模块也接收电力在线的模拟讯号,并将其中数据撷取出来后输出至处理器中;其中该调变频带对应其所属电力监控区对应中继单元的调变频带;及
一保护电路,串接于电力在线,其控制端连接至该处理器的输出端,在处理器依据接收外部传来数据启闭该保护电路。
7.如权利要求3所述具有数据中继功能的电力线网络系统,其特征在于,各电力监控区的各路灯电力监控装置包含有:
一电力状态检知单元,耦接至电力在线,取得电力线的电压及电流状态后输出;
一模拟数字转换单元,连接至该电力状态检知单元的输出端,以转换其模拟检知讯号为数字讯号后输出;
一处理器,连接至该模拟数字转换单元的输出端,以取得电压及电流数值;
一电力线通讯模块,连接至该处理器,以取得该处理器输出电压及电流数值,将其调变成模拟讯号后加载电力线中,又该电力线通讯模块也接收电力在线的模拟讯号,并将其中数据撷取出来后输出至处理器中;其中该调变频带对应其所属电力监控区对应中继单元的调变频带;及
一保护电路,串接于电力在线,其控制端连接至该处理器的输出端,在处理器依据接收外部传来数据启闭该保护电路。
8.如权利要求4所述具有数据中继功能的电力线网络系统,其特征在于,各电力监控区的各路灯电力监控装置包含有:
一电力状态检知单元,耦接至电力在线,取得电力线的电压及电流状态后输出;
一模拟数字转换单元,连接至该电力状态检知单元的输出端,以转换其模拟检知讯号为数字讯号后输出;
一处理器,连接至该模拟数字转换单元的输出端,以取得电压及电流数值;
一电力线通讯模块,连接至该处理器,以取得该处理器输出电压及电流数值,将其调变成模拟讯号后加载电力线中,又该电力线通讯模块也接收电力在线的模拟讯号,并将其中数据撷取出来后输出至处理器中;其中该调变频带对应其所属电力监控区对应中继单元的调变频带;及
一保护电路,串接于电力在线,其控制端连接至该处理器的输出端,在处理器依据接收外部传来数据启闭该保护电路。
9.如权利要求5所述具有数据中继功能的电力线网络系统,其特征在于,各电力监控区的各路灯电力监控装置包含有:
一电力状态检知单元,耦接至电力在线,取得电力线的电压及电流状态后输出;
一模拟数字转换单元,连接至该电力状态检知单元的输出端,以转换其模拟检知讯号为数字讯号后输出;
一处理器,连接至该模拟数字转换单元的输出端,以取得电压及电流数值;
一电力线通讯模块,连接至该处理器,以取得该处理器输出电压及电流数值,将其调变成模拟讯号后加载电力线中,又该电力线通讯模块也接收电力在线的模拟讯号,并将其中数据撷取出来后输出至处理器中;其中该调变频带对应其所属电力监控区对应中继单元的调变频带;及
一保护电路,串接于电力在线,其控制端连接至该处理器的输出端,在处理器依据接收外部传来数据启闭该保护电路。
10.如权利要求5所述具有数据中继功能的电力线网络系统,其特征在于,所述第一载波频带为60-90kHz,而所述第二载波频带为110-140kHz。
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