CN103746452A - Distribution information collection system and its distribution side information collection device - Google Patents
Distribution information collection system and its distribution side information collection device Download PDFInfo
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Abstract
The invention discloses a distribution information collection system and its distribution side information collection device, wherein the distribution information collection system comprises at least a distribution collection terminal used for carrying out analog-digital conversion of distribution information collected from a distribution network site plant to a digital electric signal and packaging the converted digital electric signal and a terminal identifier of the distribution collection terminal into data packets and outputting the data packets, a monitoring center and a photo-communication module. The photo-communication module and each distribution collection terminal are connected through a serial bus. The photo-communication module is used for receiving the data packets outputted from each distribution collection terminal and converting the received data packets to optical signals supporting communication protocol of an optical fiber communication network and transmitting the optical signals to the monitoring center through the optical fiber communication network. With the application of the system, communication reliability and communication speed are raised.
Description
Technical field
The present invention relates to distribution network field, relate in particular to a kind of power distribution information acquisition system and distribution side information collecting device thereof.
Background technology
Power distribution information acquisition system has very consequence in the monitoring of distribution network.For example, at many power distribution networks scene, need to be by power distribution information acquisition system the data of the field apparatus to power distribution network carry out timing acquiring and analysis, to understand in time the basic condition of field apparatus, and then monitor in real time whole power distribution network.
At present, in distribution network, conventional is based on GPRS(General Packet Radio Service, general packet radio service) the power distribution information acquisition system of technology, mainly comprise the distribution acquisition terminal, GPRS communication network and the Surveillance center that support GPRS communication.Particularly, support that the distribution acquisition terminal of GPRS communication is a kind of device that is arranged on the field apparatus that needs remote measurement and control, be used for the operation conditions of measure field equipment and the data format that the information conversion measuring is become can transmit in GPRS communication network; The information conveyance of distribution acquisition terminal being exported by GPRS communication network is to Surveillance center.
But, in the existing power distribution information acquisition system based on GPRS technology, when carrying out communication by GPRS communication network, the information of transmission need be diffused in atmosphere in electromagnetic wave mode, therefore, GPRS communication network is easily subject to electromagnetic interference and weather effect, exists poor anti jamming capability, stability not high, and transmission speed is slowly etc. not enough.Like this, can cause that the communication reliability of the power distribution information acquisition system based on GPRS technology is not high and communication speed is slow.Therefore, be necessary to provide a kind of power distribution information acquisition system that can improve communication reliability and communication speed.
Summary of the invention
The embodiment of the present invention provides a kind of power distribution information acquisition system and distribution side information collecting device thereof, for improving communication reliability and communication speed.
According to an aspect of the present invention, provide a kind of power distribution information acquisition system, having comprised:
At least one distribution acquisition terminal, it will be digital electric signal from the power distribution information analog-to-digital conversion of power distribution network field apparatus collection that described distribution acquisition terminal is used for, and exports after the terminal iidentification of the digital electric signal of conversion and this distribution acquisition terminal is packaged as to packet;
Surveillance center and optical communications module, described optical communications module is connected by universal serial bus with each distribution acquisition terminal, for receiving the packet of each distribution acquisition terminal output, and the packet of reception is converted to after the light signal of the communication protocol of supporting Networks of Fiber Communications, by Networks of Fiber Communications, transfer to described Surveillance center.
Preferably, power distribution information acquisition system also comprises: the optical network unit ONU being connected with described Surveillance center;
Described ONU is for receiving after the light signal that described optical communications module transmits by described Networks of Fiber Communications, and the signal of telecommunication that the light signal of reception is converted to based on ICP/IP protocol is sent to described Surveillance center; And
Described Surveillance center is specifically for parsing terminal iidentification and digital electric signal the signal of telecommunication receiving from described ONU, and according to the terminal iidentification parsing and digital electric signal, determine the distribution acquisition terminal corresponding with the terminal iidentification parsing and the power distribution information of collection thereof.
Preferably, described distribution acquisition terminal specifically comprises:
Data acquisition unit, for the power distribution information of power distribution network field apparatus described in Real-time Collection;
AD conversion unit, is connected with described data acquisition unit, for the power distribution information receiving from described data acquisition unit is carried out to analog-to-digital conversion, is digital electric signal;
Data transmission unit, is connected with described AD conversion unit, for the digital electric signal receiving from described AD conversion unit and the terminal iidentification of built-in this distribution acquisition terminal are in advance packaged as to the backward described universal serial bus output of packet.
Preferably, described distribution acquisition terminal also comprises:
Control unit, be connected between described AD conversion unit and data transmission unit, for receiving digital electric signal from described AD conversion unit, if the digital electric signal that judgement receives exceeds predefined normal data scope, export this digital electric signal to described data transmission unit; Otherwise, after this digital electric signal is stored, when setting cycle arrives, export described data transmission unit to; And
Described data transmission unit is specifically for receiving after the digital electric signal of described control unit output, and the digital electric signal of reception and the terminal iidentification of built-in this distribution acquisition terminal are in advance packaged as to the backward described universal serial bus output of packet.
Preferably, described optical communications module specifically comprises:
Light control unit, is connected with described universal serial bus, for receiving the packet of each distribution acquisition terminal output, and the packet of reception is carried out exporting corresponding electric signal after protocol conversion according to the communication protocol of described Networks of Fiber Communications;
Optical drive unit and light emission component TOSA, described optical drive unit is connected with described light control unit, for driving described TOSA output optical signal according to the signal of telecommunication of described light control unit output.
Preferably, described optical communications module also comprises: optical fiber receive module ROSA and the amplitude limiting amplifier circuit being attached thereto;
Described ROSA is for carrying out limited range enlargement by output to described amplitude limiting amplifier circuit from the light signal of described Networks of Fiber Communications reception is converted to the signal of telecommunication; And
The signal of telecommunication after limited range enlargement that described light control unit is also exported for receiving described amplitude limiting amplifier circuit, and the signal of telecommunication of reception is carried out to protocol conversion, obtain the signal of telecommunication based on described serial bus protocol.
According to a further aspect in the invention, also provide a kind of distribution side information collecting device, having comprised:
At least one distribution acquisition terminal, it will be digital electric signal from the power distribution information analog-to-digital conversion of power distribution network field apparatus collection that described distribution acquisition terminal is used for, and exports after the terminal iidentification of the digital electric signal of conversion and this distribution acquisition terminal is packaged as to packet;
Optical communications module, is connected by universal serial bus with each distribution acquisition terminal, for receiving the packet of each distribution acquisition terminal output, and the packet of reception is converted to the light signal of the communication protocol of supporting Networks of Fiber Communications.
Preferably, described distribution acquisition terminal specifically comprises:
Data acquisition unit, for the power distribution information of power distribution network field apparatus described in Real-time Collection;
AD conversion unit, is connected with described data acquisition unit, for the power distribution information receiving from described data acquisition unit is carried out to analog-to-digital conversion, is digital electric signal;
Data transmission unit, is connected with described AD conversion unit, for the digital electric signal receiving from described AD conversion unit and the terminal iidentification of built-in this distribution acquisition terminal are in advance packaged as to the backward described universal serial bus output of packet.
Preferably, described distribution acquisition terminal also comprises:
Control unit, be connected between described AD conversion unit and data transmission unit, for receiving digital electric signal from described AD conversion unit, if the digital electric signal that judgement receives exceeds predefined normal data scope, export this digital electric signal to described data transmission unit; Otherwise, after this digital electric signal is stored, when setting cycle arrives, export described data transmission unit to; And
Described data transmission unit is specifically for receiving after the digital signal of described control unit output, and the digital electric signal of reception and the terminal iidentification of built-in this distribution acquisition terminal are in advance packaged as to the backward described universal serial bus output of packet.
Preferably, described optical communications module specifically comprises:
Light control unit, is connected with described universal serial bus, for receiving the packet of each distribution acquisition terminal output, and the packet of reception is carried out exporting corresponding electric signal after protocol conversion according to the communication protocol of described Networks of Fiber Communications;
Optical drive unit and light emission component TOSA, described optical drive unit is connected with described light control unit, for driving described TOSA output optical signal according to the signal of telecommunication of described light control unit output.
In the technical scheme of the embodiment of the present invention, optical communications module in power distribution information acquisition system can be according to the communication protocol of the Networks of Fiber Communications such as EPON, and it is that corresponding light signal transfers to Surveillance center by Networks of Fiber Communications that the packet that comprises power distribution information receiving from distribution acquisition terminal is carried out to protocol conversion.Like this, than the GPRS communication network in existing power distribution information acquisition system, avoided the impact of electromagnetic interference and weather, and the antijamming capability of Networks of Fiber Communications and stability, transmission speed are higher, thereby can improve communication reliability and the communication speed of power distribution information acquisition system.Further, in the technical scheme of the embodiment of the present invention, can realize communicating by letter of multiple distribution acquisition terminals and Surveillance center by an optical communications module, greatly reduce construction cost.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of the power distribution information acquisition system of the embodiment of the present invention;
Fig. 2 a is the internal structure schematic diagram of a kind of distribution acquisition terminal of the embodiment of the present invention;
Fig. 2 b is the internal structure schematic diagram of the another kind of distribution acquisition terminal of the embodiment of the present invention;
Fig. 3 a is the internal structure schematic diagram of a kind of optical communications module of the embodiment of the present invention;
Fig. 3 b is the internal structure schematic diagram of the another kind of optical communications module of the embodiment of the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearer, referring to accompanying drawing and enumerate preferred embodiment, the present invention is described in more detail.But, it should be noted that, many details of listing in specification are only used to make reader to have a thorough understanding to one or more aspects of the present invention, even if do not have these specific details also can realize these aspects of the present invention.
The terms such as " module " used in this application, " system " are intended to comprise the entity relevant to computer, such as but not limited to hardware, firmware, combination thereof, software or executory software.For example, module can be, but be not limited in: thread, program and/or the computer of the process moved on processor, processor, object, executable program, execution.For instance, the application program of moving on computing equipment and this computing equipment can be modules.One or more modules can be positioned at an executory process and/or thread.
The present inventor finds, the characteristics such as optical fiber communication has low-loss, high power capacity, transmission speed is fast, lightweight, antijamming capability is strong, therefore, the present inventor considers, can improve existing power distribution information acquisition system, by Networks of Fiber Communications, carry out the transmission of data, for example, can adopt EPON(Ethernet Passive Optical Network, Ethernet passive optical network) transmission data.Like this, just can solve the not high problem of existing communication reliability, and compare the GPRS communication network that existing power distribution information acquisition system adopts, utilize optical fiber communication can improve transmission speed and antijamming capability.Therefore,, in order to carry out transfer of data by Networks of Fiber Communications, the distribution acquisition terminal in the existing power distribution information acquisition system based on GPRS technology can be improved to the distribution acquisition terminal of supporting optical fiber communication.Particularly, can in existing distribution acquisition terminal, set up ONU(Optical Network Unit, optical network unit), by the ONU setting up, the information of transmitting being in advance converted to can be by the light signal of Optical Fiber Transmission.But, in the existing power distribution information acquisition system based on GPRS, Surveillance center will receive the power distribution information of multiple distribution acquisition terminals, so, if set up ONU in each distribution acquisition terminal, this can increase the construction cost of power distribution information acquisition system greatly.
Therefore, the present inventor further contemplates, and can in power distribution information acquisition system, set up and support optical communications module optical fiber communication and that can be connected with multiple distribution acquisition terminals simultaneously; And, can improve existing distribution acquisition terminal, for example, can save the GPRS communication module arranging in existing distribution acquisition terminal.Particularly, for the each distribution acquisition terminal being connected with optical communications module, optical communications module can, according to the communication protocol of Networks of Fiber Communications, be converted to light signal by the information receiving from this distribution acquisition terminal, and the light signal of conversion is transferred to Surveillance center by Networks of Fiber Communications.Like this, than the existing power distribution information acquisition system based on GPRS technology, avoided electromagnetism to involve the interference of weather condition, and the antijamming capability of Networks of Fiber Communications and stability, transmission speed are higher, thereby can improve communication reliability and the communication speed of power distribution information acquisition system.And, compare in the existing power distribution information acquisition system based on GPRS technology, in each existing distribution acquisition terminal, be provided with GPRS communication module, and in technical scheme provided by the invention, only need to arrange an optical communications module and can realize communicating by letter of multiple distribution acquisition terminals and Surveillance center, greatly reduced construction cost.
Below in conjunction with accompanying drawing, describe technical scheme of the present invention in detail.
The embodiment of the present invention provides a kind of power distribution information acquisition system, as shown in Figure 1, comprising: distribution side information collecting device 101, Surveillance center 102.
Wherein, distribution side information collecting device 101 specifically comprises: optical communications module 103 and at least one distribution acquisition terminal 104, and for transferring to Surveillance center 102 from the power distribution information of power distribution network field apparatus collection.
Particularly, distribution acquisition terminal 104 is for will be digital electric signal from the power distribution information analog-to-digital conversion of power distribution network field apparatus collection, and exports after the terminal iidentification of the digital electric signal of conversion and this distribution acquisition terminal is packaged as to packet.Wherein, for each distribution acquisition terminal, the terminal iidentification of distribution acquisition terminal can be set by Surveillance center 102 in advance, can be specifically the terminal address of distribution acquisition terminal, can be also that numbering or other can be distinguished the identifier of each distribution acquisition terminal.
Preferably, Surveillance center 102 also can communicate by Networks of Fiber Communications.Particularly, Surveillance center 102 is connected by wireless or wired mode with ONU, and like this, Surveillance center 102 can be connected to Networks of Fiber Communications by ONU.Wherein, ONU is for receiving after the light signal that optical communications module 103 transmits by Networks of Fiber Communications, and the signal of telecommunication that the light signal of reception is converted to based on ICP/IP protocol is sent to Surveillance center.In practical application, ONU can adopt the conventional structure of those skilled in the art, is not described in detail in this.
Particularly, the signal of telecommunication that Surveillance center 102 can receive from ONU, parse terminal iidentification and digital electric signal, and according to the terminal iidentification parsing and digital electric signal, determine the distribution acquisition terminal corresponding with the terminal iidentification parsing and the power distribution information of collection thereof.In practical application, for the each distribution acquisition terminal 104 in power distribution information acquisition system, Surveillance center 102 sets in advance one to after should the terminal iidentification of distribution acquisition terminal 104 for this distribution acquisition terminal 104, and the mapping table of storage terminal sign and distribution acquisition terminal.Like this, Surveillance center 102 from receive the signal of telecommunication parse after terminal iidentification and digital electric signal, can search the terminal iidentification of storage and the mapping table of distribution acquisition terminal, therefrom find the distribution acquisition terminal corresponding with the terminal iidentification parsing.Meanwhile, power distribution information that can also be using the information further parsing from digital electric signal as the distribution acquisition terminal finding.
In technical scheme provided by the invention, by Networks of Fiber Communications, transmit power distribution information, avoid being subject to electromagnetic interference and weather effect, the antijamming capability of power distribution information acquisition system and stability are improved, and then improved the reliability of power distribution information acquisition system; And, compare GPRS communication network, Networks of Fiber Communications has the fast characteristic of transmission speed, and therefore, the present invention communicates by Networks of Fiber Communications, has improved the communication speed of power distribution information acquisition system.Further, compare the existing power distribution information acquisition system based on GPRS technology, power distribution information acquisition system provided by the invention only needs to arrange an optical communications module can realize communicating by letter of multiple distribution acquisition terminals and Surveillance center, greatly reduces construction cost.
In the technical scheme that the embodiment of the present invention provides, the concrete internal structure of above-mentioned distribution acquisition terminal 104, as shown in Figure 2 a, comprising: data acquisition unit 201, AD conversion unit 202 and data transmission unit 203.Wherein, data acquisition unit 201, for the power distribution information of Real-time Collection power distribution network field apparatus; Wherein, the power distribution information of power distribution network field apparatus can comprise: electric parameters information, quantity of state information.Particularly, the electric parameters information of power distribution network field apparatus can refer to magnitude of current, voltage of power distribution network field apparatus etc.; And quantity of state information can refer to the on off state, circuit breaker position signal, power of alterating and direct current abnormal signal of each switchgear in power distribution network field apparatus etc.In practical application, data acquisition unit 201 can, by the table meter information such as the gauge table in the on-the-spot platform of real-time copy reading district or the electric parameters information of transformer etc., obtain the power distribution information of power distribution network field apparatus.
As a kind of more excellent execution mode, above-mentioned distribution acquisition terminal 104, as shown in Figure 2 b, also comprises: control unit 204.
Wherein, control unit 204 is connected between AD conversion unit 202 and data transmission unit 203, for receiving digital electric signal from AD conversion unit 202, if the digital electric signal that judgement receives exceeds predefined normal data scope, export the digital electric signal of reception to data transmission unit 203, and the digital electric signal receiving is stored; Otherwise, after this digital electric signal is stored, when setting cycle arrives, export data transmission unit 203 to.Wherein, predefined normal data scope can rule of thumb be set in advance by those skilled in the art, for example, normal data scope can be specially the normal working voltage scope of power distribution network field apparatus, if the corresponding digital electric signal of voltage gathering exceeds normal working voltage scope, the digital electric signal that control unit 204 receives exports data transmission unit 203 to; Otherwise control unit 204 exports this digital electric signal to data transmission unit 203 after this digital electric signal is stored when setting cycle arrives.Correspondingly, data transmission unit 203 can be specifically for receiving after the digital electric signal that control unit 204 exports, and the digital electric signal of reception and the terminal iidentification of built-in this distribution acquisition terminal are in advance packaged as to the backward universal serial bus output of packet.In practical application, control unit 204 can be specially single-chip microcomputer, CPU(Central ProcessingUnit, central processing unit), microprocessor etc.Like this, can guarantee to occur when abnormal in the power distribution information gathering, by the control unit 204 in distribution acquisition terminal 104, in time abnormal digital electric signal is sent to Surveillance center 102, makes Surveillance center 102 can make in time corresponding emergency measures.Meanwhile, control unit 204 also can periodically export the power distribution information of collection to Surveillance center 102, makes Surveillance center 102 can regularly understand the normal operation conditions of distribution field apparatus.
In the technical scheme that the embodiment of the present invention provides, control unit 204 can also further carry out statistics and analysis processing to the digital electric signal of storage, obtains result, and result is transferred to data transmission unit 203.Particularly, first control unit 204 can be added up the digital electric signal of storage, for example, data processing unit 205 can be according to the digital electric signal of storage, statistical computation goes out the statistical values such as the voltage effective value, current effective value, active power, reactive power, power factor of power distribution network field apparatus, and can further according to the statistical value calculating, carry out the analyses such as three-phase imbalance analysis, three phase harmonic analysis, and result is transferred to data transmission unit 203.Correspondingly, data transmission unit 203 can be packaged as the result of reception and the terminal iidentification of built-in this distribution acquisition terminal in advance the backward universal serial bus output of packet.
In practical application, the voltage that power distribution network provides is also unstable, may cause the AD conversion unit 202 in distribution acquisition terminal 104 to occur the phenomenon that instant power-down or high-frequency signal are scurried into, then cause distribution acquisition terminal 104 to move undesired, even burn device.
Therefore, more preferably, in the distribution acquisition terminal 104 that the embodiment of the present invention provides, also comprise: the terminal power subsystem being connected with AD conversion unit 202, for providing stable supply power voltage to AD conversion unit 202.Particularly, the voltage that terminal power subsystem can provide power distribution network carries out the preliminary treatment such as filtering, DC/DC voltage transitions, to AD conversion unit 202, provides stable supply power voltage.In practical application, terminal power subsystem can adopt the conventional structure of those skilled in the art, is not described in detail in this.
In practical application, the distribution acquisition terminal 104 that the embodiment of the present invention provides can also comprise: the interactive unit being connected with control unit 204, data processing unit 205.Wherein, interactive unit specifically can comprise: indicator light and/or display and/or button, and for realizing the information interaction between people and distribution acquisition terminal 104.
Further, the distribution acquisition terminal that the embodiment of the present invention provides can also comprise: the terminal maintenance unit being connected with control unit 204; Wherein, terminal maintenance unit is used for obtaining the digital electric signal of storage from control unit 204, and control unit 204 is upgraded and/or local maintenance operation.In practical application, terminal maintenance unit also can be connected with control unit 204 by universal serial bus.
About the above-mentioned interactive unit of mentioning, terminal maintenance unit, all can adopt the conventional structure of those skilled in the art, be not described in detail in this.
In the technical scheme that the embodiment of the present invention provides, about the concrete internal structure of the above-mentioned optical communications module of mentioning 103, as shown in Figure 3, specifically comprise: light control unit 301, optical drive unit 302, TOSA(Transmitter Optical Subassembly, light emission component) 303.
Wherein, light control unit 301 is connected by universal serial bus with at least one distribution acquisition terminal 104, for receiving the packet that each distribution acquisition terminal 104 is exported, and the packet of reception is carried out exporting corresponding electric signal after protocol conversion according to the communication protocol of Networks of Fiber Communications.For example, light control unit 301 can be connected with each distribution acquisition terminal 104 by RS485 bus.Like this, for each distribution acquisition terminal 104, light control unit 301 can carry out protocol conversion according to the communication protocol of the Networks of Fiber Communications such as EPON by the packet receiving from this distribution acquisition terminal 104.
TOSA303 is connected with optical drive unit 302, for the driving signal receiving from optical drive unit 302 is converted to light signal, and the light signal of conversion is exported by Networks of Fiber Communications.Particularly, TOSA303 receives the driving signal of being exported by optical drive unit 302, and according to the driving signal receiving, the signal of telecommunication of exporting is converted to the light signal that can transmit from light control unit 301 the Networks of Fiber Communications such as EPON.In practical application, TOSA303 can adopt the conventional structure of those skilled in the art, is not described in detail in this.
As a kind of more excellent execution mode, the optical communications module 103 that the embodiment of the present invention provides can also comprise: ROSA(Receiver Optical Subassembly, optical fiber receive module) 304 and the amplitude limiting amplifier circuit 305 that is attached thereto.
Wherein, ROSA304 outputs to amplitude limiting amplifier circuit 305 and carries out limited range enlargement for the light signal receiving from Networks of Fiber Communications being converted to the signal of telecommunication to amplification.Particularly, ROSA304 is for surveying the light signal that Surveillance center 102 transmits by Networks of Fiber Communications, and after the light signal of detection is converted to the signal of telecommunication, amplification exports amplitude limiting amplifier circuit 305 to.The signal of telecommunication that ROSA304 can be exported by amplitude limiting amplifier circuit 305 be converted to digital electric signal and limited range enlargement exports light control unit 301 to.Correspondingly, light control unit 301 can also be used for receiving the signal of telecommunication after limited range enlargement that amplitude limiting amplifier circuit 305 is exported, and the signal of telecommunication of reception is carried out to protocol conversion, obtains the signal of telecommunication based on serial bus protocol.In practical application, ROSA304 specifically can be comprised of photoelectric detector and preamplifier, adopts the conventional structure of those skilled in the art, is not described in detail in this.Like this, by the ROSA304 in optical communications module 103 and amplitude limiting amplifier circuit 305, can by universal serial bus, export the command information transferring out from Surveillance center 102 to each distribution acquisition terminal 104, simultaneously, each distribution acquisition terminal 104 can be carried out corresponding operation according to the command information receiving, and realizes the monitoring of Surveillance center 102 to distribution acquisition terminal 104.
More preferably, the optical communications module 103 that the embodiment of the present invention provides can also comprise the optical communication power subsystem being connected with light control unit 301, and it is used to light control unit 301 that stable supply power voltage is provided.Further, optical communications module 103 can also comprise: optical communication maintenance unit, it is connected with light control unit 301 by Ethernet interface, for light control unit 301 being upgraded and/or local maintenance operation.About the above-mentioned optical communication power subsystem of mentioning, optical communication maintenance unit, all can adopt the conventional structure of those skilled in the art, be not described in detail in this.
In technical scheme of the present invention, optical communications module can be according to the communication protocol of the Networks of Fiber Communications such as EPON, the information receiving from distribution acquisition terminal is carried out to protocol conversion and encapsulation, and the TOSA in optical communications module transfers to Surveillance center with the form of light signal by Networks of Fiber Communications by the packet through protocol encapsulation receiving.Like this, than the GPRS communication network in existing power distribution information acquisition system, avoided atmospheric interference, and the antijamming capability of Networks of Fiber Communications and stability, transmission speed are higher, thereby can improve communication reliability and the communication speed of power distribution information acquisition system.Further, optical communications module can be connected with multiple distribution acquisition terminals simultaneously, has greatly reduced construction cost.
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method is can carry out the hardware that instruction is relevant by program to complete, this program can be stored in a computer read/write memory medium, as: ROM/RAM, magnetic disc, CD etc.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a power distribution information acquisition system, is characterized in that, comprising:
At least one distribution acquisition terminal, it will be digital electric signal from the power distribution information analog-to-digital conversion of power distribution network field apparatus collection that described distribution acquisition terminal is used for, and exports after the terminal iidentification of the digital electric signal of conversion and this distribution acquisition terminal is packaged as to packet;
Surveillance center and optical communications module, described optical communications module is connected by universal serial bus with each distribution acquisition terminal, for receiving the packet of each distribution acquisition terminal output, and the packet of reception is converted to after the light signal of the communication protocol of supporting Networks of Fiber Communications, by Networks of Fiber Communications, transfer to described Surveillance center.
2. the system as claimed in claim 1, is characterized in that, also comprises: the optical network unit ONU being connected with described Surveillance center;
Described ONU is for receiving after the light signal that described optical communications module transmits by described Networks of Fiber Communications, and the signal of telecommunication that the light signal of reception is converted to based on ICP/IP protocol is sent to described Surveillance center; And
Described Surveillance center is specifically for parsing terminal iidentification and digital electric signal the signal of telecommunication receiving from described ONU, and according to the terminal iidentification parsing and digital electric signal, determine the distribution acquisition terminal corresponding with the terminal iidentification parsing and the power distribution information of collection thereof.
3. system as claimed in claim 2, is characterized in that, described distribution acquisition terminal specifically comprises:
Data acquisition unit, for the power distribution information of power distribution network field apparatus described in Real-time Collection;
AD conversion unit, is connected with described data acquisition unit, for the power distribution information receiving from described data acquisition unit is carried out to analog-to-digital conversion, is digital electric signal;
Data transmission unit, is connected with described AD conversion unit, for the digital electric signal receiving from described AD conversion unit and the terminal iidentification of built-in this distribution acquisition terminal are in advance packaged as to the backward described universal serial bus output of packet.
4. system as claimed in claim 3, is characterized in that, described distribution acquisition terminal also comprises:
Control unit, be connected between described AD conversion unit and data transmission unit, for receiving digital electric signal from described AD conversion unit, if the digital electric signal that judgement receives exceeds predefined normal data scope, export this digital electric signal to described data transmission unit; Otherwise, after this digital electric signal is stored, when setting cycle arrives, export described data transmission unit to; And
Described data transmission unit is specifically for receiving after the digital electric signal of described control unit output, and the digital electric signal of reception and the terminal iidentification of built-in this distribution acquisition terminal are in advance packaged as to the backward described universal serial bus output of packet.
5. the system as claimed in claim 1, is characterized in that, described optical communications module specifically comprises:
Light control unit, is connected with described universal serial bus, for receiving the packet of each distribution acquisition terminal output, and the packet of reception is carried out exporting corresponding electric signal after protocol conversion according to the communication protocol of described Networks of Fiber Communications;
Optical drive unit and light emission component TOSA, described optical drive unit is connected with described light control unit, for driving described TOSA output optical signal according to the signal of telecommunication of described light control unit output.
6. system as claimed in claim 5, is characterized in that, described optical communications module also comprises: optical fiber receive module ROSA and the amplitude limiting amplifier circuit being attached thereto;
Described ROSA is for carrying out limited range enlargement by output to described amplitude limiting amplifier circuit from the light signal of described Networks of Fiber Communications reception is converted to the signal of telecommunication; And
The signal of telecommunication after limited range enlargement that described light control unit is also exported for receiving described amplitude limiting amplifier circuit, and the signal of telecommunication of reception is carried out to protocol conversion, obtain the signal of telecommunication based on described serial bus protocol.
7. a distribution side information collecting device, is characterized in that, comprising:
At least one distribution acquisition terminal, it will be digital electric signal from the power distribution information analog-to-digital conversion of power distribution network field apparatus collection that described distribution acquisition terminal is used for, and exports after the terminal iidentification of the digital electric signal of conversion and this distribution acquisition terminal is packaged as to packet;
Optical communications module, is connected by universal serial bus with each distribution acquisition terminal, for receiving the packet of each distribution acquisition terminal output, and the packet of reception is converted to the light signal of the communication protocol of supporting Networks of Fiber Communications.
8. device as claimed in claim 7, is characterized in that, described distribution acquisition terminal specifically comprises:
Data acquisition unit, for the power distribution information of power distribution network field apparatus described in Real-time Collection;
AD conversion unit, is connected with described data acquisition unit, for the power distribution information receiving from described data acquisition unit is carried out to analog-to-digital conversion, is digital electric signal;
Data transmission unit, is connected with described AD conversion unit, for the digital electric signal receiving from described AD conversion unit and the terminal iidentification of built-in this distribution acquisition terminal are in advance packaged as to the backward described universal serial bus output of packet.
9. device as claimed in claim 8, is characterized in that, described distribution acquisition terminal also comprises:
Control unit, be connected between described AD conversion unit and data transmission unit, for receiving digital electric signal from described AD conversion unit, if the digital electric signal that judgement receives exceeds predefined normal data scope, export this digital electric signal to described data transmission unit; Otherwise, after this digital electric signal is stored, when setting cycle arrives, export described data transmission unit to; And
Described data transmission unit is specifically for receiving after the digital signal of described control unit output, and the digital electric signal of reception and the terminal iidentification of built-in this distribution acquisition terminal are in advance packaged as to the backward described universal serial bus output of packet.
10. device as claimed in claim 9, is characterized in that, described optical communications module specifically comprises:
Light control unit, is connected with described universal serial bus, for receiving the packet of each distribution acquisition terminal output, and the packet of reception is carried out exporting corresponding electric signal after protocol conversion according to the communication protocol of described Networks of Fiber Communications;
Optical drive unit and light emission component TOSA, described optical drive unit is connected with described light control unit, for driving described TOSA output optical signal according to the signal of telecommunication of described light control unit output.
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