CN103634029A - Broadband power line carrier system suitable for intelligent substation communication and networking method - Google Patents

本发明涉及一种适用于智能变电站通信的宽带电力载波系统及组网方法，属于电力载波技术领域。本发明包括嵌入式宽带电力载波系统，该系统包括以太网部件，PLC调制解调部件，载波信号耦合部件及电源适配器部件，上述部件高集成于印制电路板上并依次进行连接。本发明由于采用OFDM调制机制，因此具可以有效克服码间干扰、抗干扰能力强，频带利用率高，通信带宽高，系统的均衡简单等优点效果。由于采用嵌入式结构，因此还具有结构简单，易于扩展，使用方便，安全可靠等优点。在智能变电站中使用宽带载波系统组网完全满足与上行信息管理主站，下行变电站所属分支进行信息数据传输，实现变电站的智能化。

The invention relates to a broadband power carrier system and a networking method suitable for intelligent substation communication, and belongs to the technical field of power carrier. The invention includes an embedded broadband power carrier system, which includes an Ethernet part, a PLC modulation and demodulation part, a carrier signal coupling part and a power adapter part, and the above parts are highly integrated on a printed circuit board and connected in sequence. Because the invention adopts the OFDM modulation mechanism, it has the advantages and effects of effectively overcoming intersymbol interference, strong anti-interference ability, high frequency band utilization rate, high communication bandwidth, and simple system equalization. Due to the embedded structure, it also has the advantages of simple structure, easy expansion, convenient use, safety and reliability. The use of broadband carrier system networking in smart substations fully satisfies the upstream information management master station and the substation's subordinate branches for information and data transmission, realizing the intelligence of the substation.

适用于智能变电站通信的宽带电力载波系统及组网方法Broadband power carrier system and networking method suitable for smart substation communication

技术领域 technical field

本发明涉及一种适用于智能变电站通信的宽带电力载波系统及组网方法，属于电力载波技术领域。 The invention relates to a broadband power carrier system and a networking method suitable for intelligent substation communication, and belongs to the technical field of power carrier.

背景技术 Background technique

电力载波（Power Line Carrier;简称:PLC）是电力系统特有的通信方式。是指以电力线为传输媒介，利用载波技术，将通信信号调制到电网中进行高速传输，实现电网中各个节点之间传递信息的一种通信方式。电力载波通信的最大特点是无需重新架设网络，具有价格较低，安装维护简便，专网通信，易于扩展，透明传输等一系列优点。随着智能电网的建设发展，智能变电站的建设也在积极推进中，但一方面由于智能变电站投资巨大，导致建设进度缓慢，另一方面在智能变电站的建设中，也有一些技术问题需要改进。相对于传统的变电站，智能变电站内各式信息化设备种类繁多，需要高带宽的智能化通信网络，以便实现高效传输、统一管理。现有电力载波系统对电力线中的噪声处理效果不理想，抗干扰能力不强，通讯可靠性不高，通信带宽也逐渐无法满足智能变电站日益增长的信息传输要求，且系统外围器件繁多，给后期通信组网带来诸多设计的复杂度和成本问题。 Power Line Carrier (PLC for short) is a unique communication method for power systems. It refers to a communication method that uses power lines as the transmission medium and uses carrier technology to modulate communication signals into the power grid for high-speed transmission, and realizes the transmission of information between nodes in the power grid. The biggest feature of power carrier communication is that there is no need to re-establish the network, and it has a series of advantages such as low price, easy installation and maintenance, private network communication, easy expansion, and transparent transmission. With the construction and development of smart grids, the construction of smart substations is also actively advancing. However, on the one hand, due to the huge investment in smart substations, the construction progress is slow. On the other hand, in the construction of smart substations, there are also some technical problems that need to be improved. Compared with traditional substations, there are many types of information equipment in smart substations, which require high-bandwidth intelligent communication networks to achieve efficient transmission and unified management. The existing power carrier system has an unsatisfactory effect on the noise processing in the power line, and the anti-interference ability is not strong. Communication networking brings many design complexity and cost issues.

发明内容 Contents of the invention

本发明提供一种适用于智能变电站通信的宽带电力载波系统及组网方法。其目的是解决现有电力线载波系统抗干扰能力不强，通讯速率不高，通讯不可靠，组网复杂的问题。 The invention provides a broadband power carrier system and a networking method suitable for intelligent substation communication. Its purpose is to solve the problems of weak anti-interference ability, low communication rate, unreliable communication and complex networking of the existing power line carrier system.

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:

适用于智能变电站通信的宽带电力载波系统，包括嵌入式宽带电力载波系统，该系统包括以太网部件，PLC调制解调部件，载波信号耦合部件及电源适配器部件，上述部件高集成于印制电路板上并依次进行连接。 Broadband power carrier system suitable for intelligent substation communication, including embedded broadband power carrier system, the system includes Ethernet components, PLC modem components, carrier signal coupling components and power adapter components, the above components are highly integrated on the printed circuit board on and connect in sequence.

所述的PLC调制解调部件包括含宽带载波芯片和前端信号放大芯片；所述的宽带载波芯片采用MARVELL公司的宽带载波芯片：DSS950X；所述的前端信号放大芯片采用MARVELL公司的前端信号放大芯片：DSS7800；芯片使用频率带宽为2-34MHZ，调制方式采用正交频分多路复用技术(OFDM)，并设有JTAG接口。 Described PLC modulation and demodulation part comprises broadband carrier chip and front-end signal amplifying chip; Described broadband carrier chip adopts the broadband carrier chip of MARVELL Company: DSS950X; Described front-end signal amplifying chip adopts the front-end signal amplifying chip of MARVELL Company : DSS7800; the frequency bandwidth used by the chip is 2-34MHZ, the modulation method adopts orthogonal frequency division multiplexing (OFDM), and a JTAG interface is provided.

所述的电源适配器部件既可为整个系统供电，又可与载波信号耦合部件相连接，通过电力线的载波信号传送至PLC调制解调部件，PLC调制解调部件用于将来自于电力线的信号进行解调还原为网络信号，通过以太网部件传输至终端设备；反之，并将来自于以太网部件的网络信号调制到电力线上传输。 The power adapter part can supply power for the entire system, and can be connected with the carrier signal coupling part, and the carrier signal through the power line is transmitted to the PLC modem part, and the PLC modem part is used to perform signal from the power line The demodulation is restored to the network signal, which is transmitted to the terminal equipment through the Ethernet component; on the contrary, the network signal from the Ethernet component is modulated to the power line for transmission.

所述的OFDM调制方式是一种多载波调制方式，这种方式将一个载波分为许多个带宽较窄的次载波，这些次载波相互正交，采用快速傅立叶变换将这些次载波信号进行编码；次载波频分器将信号反转，使之正交，对于n个次载波，每一个次载波的符号速率被载波调制器分为整个符号速率的1/n，这使得调制后符号速率长于多径延迟从而减少符号间干扰（ISI）。 The OFDM modulation method is a multi-carrier modulation method. In this method, a carrier is divided into many sub-carriers with narrower bandwidths. These sub-carriers are mutually orthogonal, and fast Fourier transform is used to encode these sub-carrier signals; The subcarrier frequency divider inverts the signal to make it orthogonal. For n subcarriers, the symbol rate of each subcarrier is divided into 1/n of the entire symbol rate by the carrier modulator, which makes the modulated symbol rate longer than multiple Path delay to reduce inter-symbol interference (ISI).

所述的载波信号耦合部件为耦合器；所述的PLC调制解调部件为电源接口。 The carrier signal coupling component is a coupler; the PLC modulation and demodulation component is a power interface.

所述的电源接口、电源适配器部件与载波信号耦合部件耦合器依次相连；耦合器与前端信号放大芯片、宽带载波芯片依次相连；宽带载波芯片与闪存、JTAG接口部件、重置系统部件、LED指示灯分别相连；宽带载波芯片与以太网部件、以太网数据接口依次相连；上述芯片及部件高集成于印制电路板上，且电路板四角设有于便宽带电力载波通信系统与终端设备嵌入式结合的打孔。 The power interface, the power adapter part are connected to the carrier signal coupling part coupler in sequence; the coupler is connected to the front-end signal amplification chip and the broadband carrier chip in sequence; the broadband carrier chip is connected to the flash memory, JTAG interface part, reset system part, and LED indication The lights are connected separately; the broadband carrier chip is connected with the Ethernet components and the Ethernet data interface in turn; the above chips and components are highly integrated on the printed circuit board, and the four corners of the circuit board are provided to facilitate the embedded broadband power carrier communication system and terminal equipment. Combined punch.

所述的以太网数据接口接收从智能变电站过程层一次设备发送来的数据，再由过程层设备嵌入式宽带电力载波系统中的以太网数据接口传输给以太网部件，然后通过标准的工业MII接口输出给宽带载波芯片，数据在宽带载波芯片中通过对数据进行串/并转换、数/模转换等一系列的处理并调制成为OFDM模拟信号，由前端信号放大芯片进行高频模拟信号放大以及信号滤波后，发送到载波信号耦合部件上，最后经载波信号耦合部件耦合到电源接口连接的电力线上，传输至智能变电站间隔层系统嵌入式宽带电力载波系统中； The Ethernet data interface receives the data sent from the primary equipment in the process layer of the smart substation, and then transmits the data to the Ethernet components through the Ethernet data interface in the embedded broadband power carrier system of the process layer equipment, and then passes through the standard industrial MII interface Output to the broadband carrier chip, the data in the broadband carrier chip undergoes serial/parallel conversion, digital/analog conversion and other series of processing and modulation into OFDM analog signals, and the front-end signal amplification chip performs high-frequency analog signal amplification and signal After filtering, it is sent to the carrier signal coupling component, and finally coupled to the power line connected to the power interface through the carrier signal coupling component, and transmitted to the embedded broadband power carrier system of the intelligent substation bay layer system;

智能变电站间隔层设备嵌入式宽带电力载波系统从电力线接收过来的OFDM模拟信号经电源接口传输至载波信号耦合部件，再依次传输至前端信号放大芯片，前端信号放大芯片对其进行相关的操作后传输至宽带载波芯片，宽带载波芯片对数据进行OFDM解调处理并转变为数字信号后传输给以太网部件，以太网部件最终将信号通过以太网数据接口送至间隔层设备； The OFDM analog signal received by the broadband power carrier system embedded in the bay layer equipment of the smart substation is transmitted from the power line to the carrier signal coupling component through the power interface, and then transmitted to the front-end signal amplification chip in turn, and the front-end signal amplification chip performs related operations on it before transmission To the broadband carrier chip, the broadband carrier chip performs OFDM demodulation processing on the data and converts it into a digital signal and then transmits it to the Ethernet component, and the Ethernet component finally sends the signal to the bay layer device through the Ethernet data interface;

同理，间隔层设备通过嵌入式宽带载波系统对信号进行调制/解调后与站控层设备进行通信；同时，同时，宽带载波芯片与闪存相连；宽带载波芯片与JTAG接口相连；宽带载波芯片与重置系统部件相连；宽带载波芯片与LED指示灯相连。 In the same way, the interval layer device communicates with the station control layer device after modulating/demodulating the signal through the embedded broadband carrier system; at the same time, the broadband carrier chip is connected to the flash memory; the broadband carrier chip is connected to the JTAG interface; the broadband carrier chip It is connected with the reset system components; the broadband carrier chip is connected with the LED indicator.

所述的闪存的型号选用64Mbit。 The model of the flash memory is 64Mbit.

适用于智能变电站通信的宽带电力载波系统的组网方法，是在过程层设备侧、间隔层设备侧、站控层设备侧分别加置嵌入式宽带电力载波系统，过程层一次设备采集数据经嵌入式宽带电力载波系统调制为OFDM模拟信号注入电力线传输至间隔层嵌入式宽带电力载波系统，经间隔层嵌入式宽带电力载波系统解调为数字信号后传送汇集至间隔层设备；同理，间隔层设备所汇集信号经宽带电力载波系统调制/解调后传送至站控层设备。 The networking method of the broadband power carrier system suitable for smart substation communication is to add embedded broadband power carrier systems on the process layer equipment side, the interval layer equipment side, and the station control layer equipment side respectively, and the data collected by the primary equipment at the process layer is embedded The OFDM analog signal is injected into the power line and transmitted to the embedded broadband power carrier system in the bay layer. After being demodulated by the embedded broadband power carrier system in the bay layer, it is converted into a digital signal and then transmitted to the bay layer equipment; similarly, the bay layer The signals collected by the equipment are modulated/demodulated by the broadband power carrier system and then transmitted to the station control layer equipment.

本发明的有益效果是：由于采用OFDM调制机制，因此具可以有效克服码间干扰、抗干扰能力强，频带利用率高，通信带宽高，系统的均衡简单等优点效果。由于采用嵌入式结构，因此还具有结构简单，易于扩展，使用方便，安全可靠等优点。在智能变电站中使用宽带载波系统组网完全满足与上行信息管理主站，下行变电站所属分支进行信息数据传输，实现变电站的智能化。 The beneficial effects of the present invention are: because the OFDM modulation mechanism is adopted, it has the advantages of effectively overcoming intersymbol interference, strong anti-interference ability, high frequency band utilization rate, high communication bandwidth, and simple system equalization. Due to the embedded structure, it also has the advantages of simple structure, easy expansion, convenient use, safety and reliability. The use of broadband carrier system networking in smart substations fully satisfies the upstream information management master station and the substation's subordinate branches for information and data transmission, realizing the intelligence of the substation.

附图说明 Description of drawings

下面结合附图和具体实施例对本发明作进一步详细的说明。 The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

图1是本发明的载波系统结构示意图； Fig. 1 is a schematic structural diagram of a carrier system of the present invention;

图2是本发明的智能变电站内组网方式示意图。 Fig. 2 is a schematic diagram of the networking mode in the smart substation of the present invention.

图中：宽带载波芯片1 ，前端信号放大芯片2，耦合器3 ，电源接口4，电源适配器部件5，闪存6 ，以太网部件7 ，以太网数据接口8， JTEG接口部件9，重置系统部件10， LED指示灯11。 In the figure: Broadband carrier chip 1, front-end signal amplifier chip 2, coupler 3, power interface 4, power adapter part 5, flash memory 6, Ethernet part 7, Ethernet data interface 8, JTEG interface part 9, reset system part 10. LED indicator light 11.

具体实施方式 Detailed ways

本发明是一种适用于智能变电站通信的宽带电力载波系统及组网方法，该系统包括嵌入式宽带电力载波系统，其具有以太网部件，PLC调制解调部件，载波信号耦合部件，电源适配器部件，上述部件高集成于印制电路板上并依次进行连接。所述的PLC调制解调部件包含宽带载波芯片1和前端信号放大芯片2。所述电源适配器部件5，既可为整个系统供电，又可与载波信号耦合部件相接，将通过电力线的载波信号传送至PLC调制解调部件，PLC调制解调部件用于将来自于电力线的信号进行解调还原为网络信号，通过以太网部件7传输至终端设备；反之，并将来自于以太网部件7的网络信号调制到电力线上传输。 The present invention is a broadband power carrier system and networking method suitable for intelligent substation communication. The system includes an embedded broadband power carrier system, which has an Ethernet component, a PLC modulation and demodulation component, a carrier signal coupling component, and a power adapter component. , the above components are highly integrated on the printed circuit board and connected in sequence. The PLC modulation and demodulation components include a broadband carrier chip 1 and a front-end signal amplification chip 2 . The power adapter part 5 can not only supply power to the whole system, but also be connected with the carrier signal coupling part, and transmit the carrier signal through the power line to the PLC modem part, and the PLC modem part is used to transmit the signal from the power line The signal is demodulated and restored to a network signal, which is transmitted to the terminal device through the Ethernet component 7; otherwise, the network signal from the Ethernet component 7 is modulated to the power line for transmission.

智能变电站分为过程层、间隔层和站控层。过程层包括变压器、断路器、隔离开关、电流/电压互感器等一次设备及其所属的智能组件以及独立的智能电子系统；间隔层设备一般指继电保护系统、系统测控系统、监测功能主IED等二次设备，实现使用一个间隔的数据并且作用于该间隔一次设备的功能，其实现与各种远方输入/输出设备、传感器和控制器通信；站控层包括自动化站级监视控制系统、站域控制、通信系统和对时系统等，实现面向全站设备的监视、控制、告警及信息交互功能，完成数据采集和监视控制（SCADA）、操作闭锁以及同步向量采集、电能采集、保护信息管理等相关功能。 Smart substation is divided into process layer, bay layer and station control layer. The process layer includes transformers, circuit breakers, isolating switches, current/voltage transformers and other primary equipment and their smart components and independent intelligent electronic systems; bay layer equipment generally refers to relay protection systems, system measurement and control systems, and monitoring function main IEDs. Secondary equipment, such as secondary equipment, realizes the function of using the data of an interval and acting on the primary equipment of the interval, which realizes communication with various remote input/output devices, sensors and controllers; the station control layer includes automated station-level monitoring and control systems, station Domain control, communication system and time synchronization system, etc., realize monitoring, control, alarm and information interaction functions for all station equipment, complete data acquisition and monitoring control (SCADA), operation lock and synchronous vector acquisition, power acquisition, protection information management and other related functions.

本发明组网方法实现的技术方案为：在过程层设备侧、间隔层设备侧、站控层设备侧分别加置嵌入式宽带电力载波系统，过程层一次设备采集数据经嵌入式宽带电力载波系统调制为OFDM模拟信号注入电力线传输至间隔层嵌入式宽带电力载波系统，经间隔层嵌入式宽带电力载波系统解调为数字信号后传送汇集至间隔层设备；同理，间隔层设备所汇集信号经宽带电力载波系统调制/解调后传送至站控层设备。 The technical scheme realized by the networking method of the present invention is as follows: an embedded broadband power carrier system is respectively installed on the process layer equipment side, the interval layer equipment side, and the station control layer equipment side, and the data collected by the primary equipment at the process layer passes through the embedded broadband power carrier system. The modulated OFDM analog signal is injected into the power line and transmitted to the embedded broadband power carrier system in the bay layer, demodulated into a digital signal by the embedded broadband power carrier system in the bay layer, and then transmitted and collected to the equipment in the bay layer; similarly, the signals collected by the equipment in the bay layer are passed through After modulation/demodulation by the broadband power carrier system, it is sent to the station control layer equipment.

其中，PLC调制解调部件中宽带载波芯片1采用MARVELL公司的DSS950X载波芯片，前端信号放大芯片2采用MARVELL公司的DSS7800芯片，芯片使用频率带宽2-34MHZ，调制方式采用正交频分多路复用技术（OFDM），芯片内部集成可编程的128位AES，256位AES，和3DES 硬件加密技术，安全可靠。并设有JTAG接口，方便进行边界扫描及自我测试。同时，宽带载波通信芯片可以完全实现任意宽度频段使用，达到频段的高低和宽度的可控性，对于多链路组网实现分频组网，避免频率间干扰。 Among them, the broadband carrier chip 1 in the PLC modulation and demodulation part adopts the DSS950X carrier chip of MARVELL Company, the front-end signal amplification chip 2 adopts the DSS7800 chip of MARVELL Company, the frequency bandwidth of the chip is 2-34MHZ, and the modulation method adopts OFDM Using technology (OFDM), the chip integrates programmable 128-bit AES, 256-bit AES, and 3DES hardware encryption technology, which is safe and reliable. And has a JTAG interface, convenient for boundary scan and self-test. At the same time, the broadband carrier communication chip can fully realize the use of any frequency band, achieve the controllability of the height and width of the frequency band, and realize frequency division networking for multi-link networking to avoid inter-frequency interference.

OFDM调制方式是一种多载波调制方式，这种方式将一个载波分为许多个带宽较窄的次载波，这些次载波相互正交，采用快速傅立叶变换将这些次载波信号进行编码。次载波频分器将信号反转，使之正交，对于n个次载波，每一个次载波的符号速率被载波调制器分为整个符号速率的1/n，这使得调制后符号速率长于多径延迟从而减少符号间干扰（ISI）。 The OFDM modulation method is a multi-carrier modulation method. In this method, a carrier is divided into many sub-carriers with narrower bandwidths. These sub-carriers are orthogonal to each other. Fast Fourier transform is used to encode these sub-carrier signals. The subcarrier frequency divider inverts the signal to make it orthogonal. For n subcarriers, the symbol rate of each subcarrier is divided into 1/n of the entire symbol rate by the carrier modulator, which makes the modulated symbol rate longer than multiple Path delay to reduce inter-symbol interference (ISI).

下面将结合附图说明本发明的具体实施方式。如图1所示：电源接口4、电源适配器部件5与载波信号耦合部件耦合器3依次相连，载波信号耦合部件耦合器3与前端信号放大芯片2、宽带载波芯片1依次相连，宽带载波芯片1与闪存6、JTEG接口部件9、重置系统部件10、LED指示灯11分别相连，宽带载波芯片1与以太网部件7、以太网数据接口8依次相连，上述芯片及部件高集成于印制电路板上，且电路板四角设有打孔，方便宽带电力载波通信系统与终端设备嵌入式结合。 The specific implementation manner of the present invention will be described below with reference to the accompanying drawings. As shown in Figure 1: the power interface 4, the power adapter part 5 are connected to the carrier signal coupling part coupler 3 in sequence, the carrier signal coupling part coupler 3 is connected to the front-end signal amplification chip 2 and the broadband carrier chip 1 in sequence, and the broadband carrier chip 1 It is respectively connected with flash memory 6, JTEG interface part 9, reset system part 10, and LED indicator light 11. The broadband carrier chip 1 is connected with Ethernet part 7 and Ethernet data interface 8 in sequence. The above chips and parts are highly integrated in the printed circuit On the board, and the four corners of the circuit board are perforated to facilitate the embedded combination of the broadband power carrier communication system and the terminal equipment.

从智能变电站过程层一次设备发送来的数据，由过程层设备嵌入式宽带电力载波系统中的以太网数据接口8传输给以太网部件7，然后通过标准的工业MII接口输出给宽带载波芯片1，数据在宽带载波芯片1中通过对数据进行串/并转换、数/模转换等一系列的处理并调制成为OFDM模拟信号，由前端信号放大芯片2进行高频模拟信号放大以及信号滤波后，发送到载波信号耦合部件耦合器3上，最后经载波信号耦合部件耦合器3耦合到电源接口4连接的电力线上，传输至智能变电站间隔层系统嵌入式宽带电力载波系统中。智能变电站间隔层设备嵌入式宽带电力载波系统从电力线接收过来的OFDM模拟信号经电源接口4传输至载波信号耦合部件耦合器3，再依次传输至前端信号放大芯片2，前端信号放大芯片2对其进行相关的操作后传输至宽带载波芯片1，载波芯片1对数据进行OFDM解调处理并转变为数字信号后传输给以太网部件7，以太网部件7最终将信号通过以太网数据接口8送至间隔层设备。同理，间隔层设备通过嵌入式宽带载波系统对信号进行调制/解调后与站控层设备进行通信。同时，宽带载波芯片1与闪存6相连，便于对数据进行缓存；宽带载波芯片1与JTEG接口部件9相连，便于对系统内部进行调试；宽带载波芯片1与重置系统部件相连，便于对系统进行手动重置操作；宽带载波芯片1与LED指示灯11相连，便于对系统状态进行监测。所述的闪存6为64Mbit。 The data sent from the primary equipment in the process layer of the smart substation is transmitted to the Ethernet component 7 by the Ethernet data interface 8 in the broadband power carrier system embedded in the process layer equipment, and then output to the broadband carrier chip 1 through the standard industrial MII interface. In the broadband carrier chip 1, the data undergoes serial/parallel conversion, digital/analog conversion and other series of processing and modulation to form an OFDM analog signal. After the front-end signal amplifier chip 2 performs high-frequency analog signal amplification and signal filtering, it is sent to the carrier signal coupling component coupler 3, and finally coupled to the power line connected to the power interface 4 through the carrier signal coupling component coupler 3, and then transmitted to the embedded broadband power carrier system of the intelligent substation bay layer system. The OFDM analog signal received by the broadband power carrier system embedded in the interval layer equipment of the smart substation is transmitted from the power line to the carrier signal coupling component coupler 3 through the power interface 4, and then sequentially transmitted to the front-end signal amplification chip 2, and the front-end signal amplification chip 2 After relevant operations are carried out, it is transmitted to the broadband carrier chip 1. The carrier chip 1 performs OFDM demodulation processing on the data and converts it into a digital signal and then transmits it to the Ethernet component 7. The Ethernet component 7 finally sends the signal to the Spacer equipment. Similarly, the bay layer equipment communicates with the station control layer equipment after modulating/demodulating the signal through the embedded broadband carrier system. Simultaneously, broadband carrier chip 1 is connected with flash memory 6, is convenient to cache data; Broadband carrier chip 1 is connected with JTEG interface part 9, is convenient to debugging inside the system; Manual reset operation; the broadband carrier chip 1 is connected to the LED indicator 11, which is convenient for monitoring the system status. The flash memory 6 is 64Mbit.

如上所述，对本发明的实施例进行了详细的说明，但是只要实质上没有脱离本发明的发明点及效果可以有很多的变形，这对本领域的技术人员来说是显而易见的。因此，这样的变形例也全部包含在本发明的保护范围之内。 As mentioned above, although the Example of this invention was demonstrated in detail, it is obvious to those skilled in the art that many modifications are possible as long as the inventive point and effect of this invention are not substantially deviated. Therefore, all such modified examples are also included in the protection scope of the present invention.