CN102903221A - Distribution transformer terminal wireless data transmission system for communication signal blind areas - Google Patents
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Abstract
Description
技术领域 technical field
本发明涉及一种数据传输系统,特别是一种应用在移动通信信号盲区内工作的配变终端无线数据传输系统。 The invention relates to a data transmission system, in particular to a wireless data transmission system applied to distribution transformer terminals working in the blind area of mobile communication signals.
背景技术 Background technique
智能电网就是把最新的信息化技术、通信技术、计算机控制技术和原有的输、配电基础设施高度结合,形成一个新型电网,实现电力系统的智能化。建立高速、双向、实时、集成的通信系统是实现智能电网的基础,而构建一个能够全面地对配电变压器的各种运行参数进行监视、测量的通信网络是智能电网建设中基础的基础。目前对配电变压器的各种运行参数进行监视、测量的通信网络系统最主要是通过GPRS/CDMA 无线通信网方式进行数据传输。 The smart grid is to combine the latest information technology, communication technology, computer control technology with the original transmission and distribution infrastructure to form a new type of power grid and realize the intelligence of the power system. Establishing a high-speed, two-way, real-time, and integrated communication system is the basis for realizing the smart grid, and building a communication network that can comprehensively monitor and measure various operating parameters of distribution transformers is the foundation of smart grid construction. At present, the communication network system for monitoring and measuring various operating parameters of distribution transformers mainly uses GPRS/CDMA wireless communication network for data transmission.
GPRS 是通用无线分组业务的英文简称,CDMA是码分多址的英文缩写,参照图1,目前大多数配变终端设备都提供了基于GPRS/CDMA 的通信方式来实现对配电变压器的运行参数进行监视和测量。GPRS/CDMA无线通信网方式作为一种成熟的传输网络,具有传输率大、频率利用率高、数据传输可靠等特点,可以满足配变终端设备数据通信的要求。同时由于每个配变终端设备一年的使用费仅100元左右,因此是目前大多数数据采集与监控设备比较常用的无线通信方式。 GPRS is the English abbreviation for General Packet Wireless Service, and CDMA is the English abbreviation for Code Division Multiple Access. Referring to Figure 1, most distribution transformer terminal equipment currently provide communication methods based on GPRS/CDMA to realize the operating parameters of distribution transformers. Monitor and measure. As a mature transmission network, GPRS/CDMA wireless communication network has the characteristics of high transmission rate, high frequency utilization rate and reliable data transmission, which can meet the data communication requirements of distribution transformer terminal equipment. At the same time, because the annual usage fee of each distribution transformer terminal equipment is only about 100 yuan, it is currently the most commonly used wireless communication method for most data acquisition and monitoring equipment.
但GPRS/CDMA 通信方式也存在一些限制,该方式只能在有网络信号的区域内使用,否则带GPRS/CDMA 通信模块的配变终端设备将无法正常工作。 However, there are some limitations in the GPRS/CDMA communication method. This method can only be used in areas with network signals, otherwise the distribution terminal equipment with GPRS/CDMA communication module will not work normally.
发明内容 Contents of the invention
为了克服现有技术的不足,本发明的目的在于提供一种应用在移动通信信号盲区内工作的配变终端无线数据传输系统。 In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a wireless data transmission system for distribution transformer terminals that works in the blind area of mobile communication signals.
本发明解决其技术问题所采用的技术方案是: The technical solution adopted by the present invention to solve its technical problems is:
用于通信信号盲区的配变终端无线数据传输系统,包括用于用电监测和计量的配变终端设备;用于进行网络通信的GPRS/CDMA通信模块;用于配变终端设备与GPRS/CDMA通信模块之间进行无线通信的无线数据传输模块,所述无线数据传输模块包括与配变终端设备连接的TM模块和与GPRS/CDMA通信模块连接的GM模块。 Distribution transformer terminal wireless data transmission system for communication signal blind area, including distribution transformer terminal equipment for electricity monitoring and metering; GPRS/CDMA communication module for network communication; used for distribution transformer terminal equipment and GPRS/CDMA A wireless data transmission module for wireless communication between communication modules, the wireless data transmission module includes a TM module connected to the distribution transformer terminal equipment and a GM module connected to the GPRS/CDMA communication module.
优选的,所述TM模块由用于与配变终端设备连接的终端接口电路、串口通信电路Ⅰ、微处理器Ⅰ、看门狗及复位电路Ⅰ、无线射频电路Ⅰ和用于转换电压的电源电路Ⅰ构成,所述终端接口电路、串口通信电路Ⅰ和无线射频电路Ⅰ分别与微处理器Ⅰ连接,所述看门狗及复位电路Ⅰ连接微处理器Ⅰ用于微处理器Ⅰ的复位。 Preferably, the TM module is composed of a terminal interface circuit for connecting with distribution transformer terminal equipment, a serial communication circuit I, a microprocessor I, a watchdog and reset circuit I, a wireless radio frequency circuit I and a power supply for converting voltage The circuit I is composed of the terminal interface circuit, the serial port communication circuit I and the radio frequency circuit I respectively connected to the microprocessor I, and the watchdog and reset circuit I connected to the microprocessor I for resetting the microprocessor I.
进一步,所述终端接口电路设置有与配变终端设备连接的电源线和数据线,所述电源电路Ⅰ连接终端接口电路,TM模块通过终端接口电路连接在配变终端设备后,可从配变终端设备处取得电源,并通过电源电路Ⅰ转换为TM模块上各个元器件的工作电压。 Further, the terminal interface circuit is provided with a power line and a data line connected to the terminal equipment of the distribution transformer, the power supply circuit I is connected to the terminal interface circuit, and the TM module is connected to the terminal equipment of the distribution transformer through the terminal interface circuit, and can be connected from the distribution transformer The terminal equipment obtains the power supply, and converts it into the working voltage of each component on the TM module through the power supply circuit I.
优选的,所述GM模块由用于与GPRS/CDMA通信模块连接的通信模块接口电路、串口通信电路Ⅱ、微处理器Ⅱ、看门狗及复位电路Ⅱ、无线射频电路Ⅱ和用于转换电压的电源电路Ⅱ构成,所述通信模块接口电路、串口通信电路Ⅱ和无线射频电路Ⅱ分别与微处理器Ⅱ连接,所述看门狗及复位电路Ⅱ连接微处理器Ⅱ用于微处理器Ⅱ的复位。 Preferably, the GM module is composed of a communication module interface circuit for connecting with a GPRS/CDMA communication module, a serial port communication circuit II, a microprocessor II, a watchdog and reset circuit II, a wireless radio frequency circuit II and a circuit for converting voltage The power supply circuit II is composed of the communication module interface circuit, serial port communication circuit II and radio frequency circuit II respectively connected to the microprocessor II, and the watchdog and reset circuit II are connected to the microprocessor II for the microprocessor II reset.
进一步,所述电源电路Ⅱ连接GPRS/CDMA通信模块并为GPRS/CDMA通信模块提供工作电源。 Further, the power supply circuit II is connected to the GPRS/CDMA communication module and provides working power for the GPRS/CDMA communication module.
进一步,所述GM模块还包括太阳能电池,所述太阳能电池连接电源电路Ⅱ,太阳能电池输出的电经电源电路Ⅱ转换电压后为GM模块的各电路提供工作电源。 Further, the GM module also includes a solar battery, the solar battery is connected to the power circuit II, and the electricity output by the solar battery is converted into a voltage by the power circuit II to provide working power for each circuit of the GM module.
本发明的有益效果是:本发明的无线数据传输系统采用无线数据传输与GPRS/CDMA无线通信网络相结合的方式,在GPRS/CDMA无线通信网络的通信信号盲点处采用无线数据传输模块进行短距离的数据传输,再通过GPRS/CDMA无线通信网络进行长距离数据传输,克服了GPRS/CDMA无线通信网络具有通信盲点的缺点。本发明的无线数据传输系统具有传输率大、频率利用率高、数据传输可靠、成本低、维护费用低等特点,同时消除了网络通信中存在信号盲点问题,满足配变终端设备数据通信的要求,适用于供电局对配电变压器进行用电监测和计量。 The beneficial effects of the present invention are: the wireless data transmission system of the present invention adopts the mode of combining wireless data transmission and GPRS/CDMA wireless communication network, adopts wireless data transmission module to carry out short-distance communication at the blind spot of communication signal of GPRS/CDMA wireless communication network Data transmission, and then long-distance data transmission through the GPRS/CDMA wireless communication network, which overcomes the shortcomings of the GPRS/CDMA wireless communication network with communication blind spots. The wireless data transmission system of the present invention has the characteristics of high transmission rate, high frequency utilization rate, reliable data transmission, low cost, low maintenance cost, etc., and at the same time eliminates the problem of signal blind spots in network communication, and meets the data communication requirements of distribution transformer terminal equipment , suitable for power supply bureaus to monitor and measure power consumption of distribution transformers.
附图说明 Description of drawings
下面结合附图和实施例对本发明进一步说明。 The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
图1是现有基于GPRS/CDMA 通信方式的配变终端设备工作示意图; Figure 1 is a working schematic diagram of the existing distribution transformer terminal equipment based on GPRS/CDMA communication mode;
图2是本发明的无线数据传输系统结构示意图; Fig. 2 is a schematic structural diagram of the wireless data transmission system of the present invention;
图3是本发明中TM模块的结构框图; Fig. 3 is the structural block diagram of TM module among the present invention;
图4是本发明中GM模块的结构框图; Fig. 4 is the structural block diagram of GM module among the present invention;
图5是TM(GM)模块的工作流程图; Figure 5 is a workflow diagram of the TM (GM) module;
图6是TM(GM)模块无线接收中断流程图; Figure 6 is a flow chart of TM (GM) module wireless reception interruption;
图7是TM(GM)模块串口接收中断流程图。 Figure 7 is a flow chart of TM (GM) module serial port receiving interrupt.
图中标号说明: 1、配变终端设备,2、无线数据传输模块,3、TM模块,31、终端接口电路,32、串口通信电路Ⅰ,33、微处理器Ⅰ,34、看门狗及复位电路Ⅰ,35、无线射频电路Ⅰ,36、电源电路Ⅰ,4、GM模块,41、通信模块接口电路,42、串口通信电路Ⅱ,43、微处理器Ⅱ,44、看门狗及复位电路Ⅱ,45、无线射频电路Ⅱ,46、电源电路Ⅱ,47、太阳能电池,5、GPRS/CDMA通信模块,6、信息控制中心。 Explanation of symbols in the figure: 1. Distribution transformer terminal equipment, 2. Wireless data transmission module, 3. TM module, 31. Terminal interface circuit, 32. Serial port communication circuit Ⅰ, 33. Microprocessor Ⅰ, 34. Watchdog and Reset circuit Ⅰ, 35. Wireless radio frequency circuit Ⅰ, 36. Power circuit Ⅰ, 4. GM module, 41. Communication module interface circuit, 42. Serial port communication circuit Ⅱ, 43. Microprocessor Ⅱ, 44. Watchdog and reset Circuit II, 45. Radio frequency circuit II, 46. Power circuit II, 47. Solar battery, 5. GPRS/CDMA communication module, 6. Information control center.
具体实施方式 Detailed ways
参照图2,本发明提供的一种用于通信信号盲区的配变终端无线数据传输系统,包括用于用电监测和计量的配变终端设备1,所述配变终端设备1通过无线数据传输模块2连接GPRS/CDMA通信模块5,GPRS/CDMA通信模块5用于与供电局的信息控制中心6进行网络通信。 Referring to Fig. 2, a distribution transformer terminal wireless data transmission system for communication signal blind areas provided by the present invention includes a distribution transformer terminal device 1 for power consumption monitoring and metering, and the distribution transformer terminal device 1 transmits data through wireless The module 2 is connected with the GPRS/CDMA communication module 5, and the GPRS/CDMA communication module 5 is used for network communication with the information control center 6 of the power supply bureau.
所述无线数据传输模块2包括与配变终端设备1连接的TM模块3和与GPRS/CDMA通信模块5连接的GM模块4。
The wireless data transmission module 2 includes a
参照图3,TM模块3由终端接口电路31、串口通信电路Ⅰ32、微处理器Ⅰ33、看门狗及复位电路Ⅰ34、无线射频电路Ⅰ35和电源电路Ⅰ36构成,所述的终端接口电路31、串口通信电路Ⅰ32、看门狗及复位电路Ⅰ34和无线射频电路Ⅰ35分别与微处理器Ⅰ33连接。其中,终端接口电路31用来与配变终端设备1直接相连,以实时接收配变终端设备1发出的电平信号和数据包,并把这些信号和数据包传给微处理器Ⅰ33,所述终端接口电路31也会把微处理器Ⅰ33传出的电平信号和数据包传给配变终端设备1。微处理器Ⅰ33把终端接口电路31送来的电平信号和数据包经过编码送往无线射频单元Ⅰ35,也可将无线射频单元Ⅰ35送来的数据信号经解码后送到终端接口电路31。无线射频单元Ⅰ35把微处理器Ⅰ33送来的编码信号经天线发射出去,也可把GM模块4发送过来的无线信号接收下来,并送到微处理器Ⅰ33。串口通信电路Ⅰ32用来与PC机的RS232串口电路相连,以便装载程序到微处理器Ⅰ33。看门狗及复位电路Ⅰ34用来对微处理器Ⅰ33上电时复位,以及当TM模块3不能正常工作时的重新复位,使TM模块3能够恢复到正常工作状态。终端接口电路31处设置有与配变终端设备1连接的电源线和数据线,TM模块3通过终端接口电路31与配变终端设备1连接后,电源电路Ⅰ36把终端接口电路31传过来的5V电源转换为3.3V电源,供TM模块3上的元器件工作之用。
Referring to Fig. 3,
参照图4,GM模块4由通信模块接口电路41、串口通信电路Ⅱ42、微处理器Ⅱ43、看门狗及复位电路Ⅱ44、无线射频电路Ⅱ45、电源电路Ⅱ46和太阳能电池47构成,所述通信模块接口电路41、串口通信电路Ⅱ42、看门狗及复位电路Ⅱ44和无线射频电路Ⅱ45分别与微处理器Ⅱ43连接,所述太阳能电池47连接电源电路Ⅱ46。其中,通信模块接口电路41用来与GPRS/CDMA通信模块5直接相连,从GPRS/CDMA通信模块5获得电平信号和数据包后传送给微处理器Ⅱ43,也负责把微处理器Ⅱ43传过来的电平信号和数据包传送给GPRS/CDMA通信模块5。电源电路Ⅱ46从太阳能电池47处获得电源,并转换为3.3V电压供GM模块4上的元器件工作之用,优选的,太阳能电池47中的蓄电池规格为12V 50AH,太阳能电池板为40W 12V,能保证在连续15天无阳光时正常工作;进一步,电源电路Ⅱ46还连接GPRS/CDMA通信模块5,电源电路Ⅱ46为GPRS/CDMA通信模块5提供工作电源,GM模块4上的串口通信电路Ⅱ42、微处理器Ⅱ43、看门狗及复位电路Ⅱ44和无线射频电路Ⅱ45的作用与TM模块3上对应电路的作用相同。
Referring to Fig. 4, GM module 4 is made up of communication
优选的,TM模块3和GM模块4中的无线射频电路35、45工作频率为2.4GHz。无线射频电路35、45数据传送功率可调,最大传输速率为250Kbps。
Preferably, the working frequency of the wireless
优选的,TM模块3和GM模块4中采用的微处理器33、43具有低功率、低成本、完全兼容IEEE802.15.4等特点,集成了32位RISC MCU内核、高性能的2.4GHz IEEE802.15.4射频收发器、192kB ROM和96kB RAM,并为无线传感器网络应用提供了通用的低成本解决方案。高度集成有助于降低整个系统的成本,特别是192K ROM存储器可实现点对点和网状网络协议栈的集成RAM可支持路由算法和应用控制的功能,无需添加额外的外部存储。使用硬件MAC和安全性极高的AES编码加速器,大大降低功耗和处理器的费用。
Preferably, the
优选的,所述的配变终端设备1选择采用华立HL3302型配变管理终端,GPRS/CDMA通信模块5为基于有方Neo_M590通信模块的B010。 Preferably, the distribution transformer terminal equipment 1 adopts Huali HL3302 distribution transformer management terminal, and the GPRS/CDMA communication module 5 is B010 based on Youfang Neo_M590 communication module.
本发明的工作过程是:供电部门的信息控制中心6通过网络发送命令给安放在有移动通信信号区域内的GPRS/CDMA通信模块5,GPRS/CDMA 通信模块5获得指令后借助相连的GM模块4,将指令传送到移动通信信号盲区内的TM模块3,TM模块3将指令传给相连接的配变终端设备1,配变终端设备1根据约定解析出相关指令,再对指令进行响应,例如进行参数设置或进行用电监测和计量。数据采集的过程是:安放在移动通信信号盲区内的配变终端设备1根据预先设置,采集相关设备数据,并借助与之连接的TM模块3,将数据传送到安放在有移动通信信号区域的GM模块4,GM模块4获得数据以后将数据传送给与之连接的GPRS/CDMA 通信模块5,GPRS/CDMA 通信模块5获得数据后将数据通过网络传回到供电部门的信息控制中心6中。图5至图7为TM模块3和GM模块4的工作过程流程图。
The work process of the present invention is: the information control center 6 of the power supply department sends an order to be placed on the GPRS/CDMA communication module 5 in the mobile communication signal area through the network, and the GPRS/CDMA communication module 5 obtains the instruction by means of the connected GM module 4 , transmit the command to the
本发明通过对配变终端设备1和GPRS/CDMA通信模块5之间的电平信号及数据包无线传输,实现了GPRS/CDMA通信模块5与配变终端设备1空间位置上的分离,同时保证其间相互传送数据及电平信号的准确性,因此可以将GPRS/CDMA通信模块5与GM模块4一起放置在有GPRS信号或CDMA信号的位置,从而解决了在配变终端设备1处无移动通信信号情况下,系统仍可以借助本发明实现远程数据传输。 The present invention realizes the separation of the GPRS/CDMA communication module 5 and the distribution transformer terminal equipment 1 in spatial position through the wireless transmission of level signals and data packets between the distribution transformer terminal equipment 1 and the GPRS/CDMA communication module 5, while ensuring The accuracy of the mutual transmission of data and level signals, so the GPRS/CDMA communication module 5 and the GM module 4 can be placed together in the position where there are GPRS signals or CDMA signals, thereby solving the problem of no mobile communication at the terminal equipment 1 of the distribution transformer. In the case of signals, the system can still realize remote data transmission by means of the present invention.
本发明的无线数据传输系统采用无线数据传输与GPRS/CDMA无线通信网络相结合的方式,在GPRS/CDMA无线通信网络的通信信号盲点处采用无线数据传输模块2进行短距离的数据传输,再通过GPRS/CDMA无线通信网络进行长距离数据传输,克服了GPRS/CDMA无线通信网络无法适应通信信号盲区的缺点。本发明的无线数据传输系统具有传输率大、频率利用率高、数据传输可靠、成本低、维护费用低等特点,同时消除了网络通信中存在的信号盲点问题,满足配变终端设备1数据通信的要求,适用于供电局对配电变压器的各种运行参数的监测和计量。 The wireless data transmission system of the present invention adopts the mode that wireless data transmission is combined with GPRS/CDMA wireless communication network, adopts wireless data transmission module 2 to carry out short-distance data transmission at the communication signal blind spot of GPRS/CDMA wireless communication network, and then through The GPRS/CDMA wireless communication network carries out long-distance data transmission, which overcomes the shortcoming that the GPRS/CDMA wireless communication network cannot adapt to the blind area of communication signals. The wireless data transmission system of the present invention has the characteristics of high transmission rate, high frequency utilization rate, reliable data transmission, low cost, and low maintenance cost. It is applicable to the monitoring and measurement of various operating parameters of distribution transformers by the power supply bureau.
以上所述仅为本发明的优先实施方式,本发明并不限定于上述所述的实施例,凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。 The above is only the preferred implementation of the present invention, and the present invention is not limited to the above-described embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the within the protection scope of the present invention.
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