CN110492909A - Wireless isolated form power line carrier communication performance test methods and system - Google Patents
Wireless isolated form power line carrier communication performance test methods and system Download PDFInfo
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- CN110492909A CN110492909A CN201910818572.3A CN201910818572A CN110492909A CN 110492909 A CN110492909 A CN 110492909A CN 201910818572 A CN201910818572 A CN 201910818572A CN 110492909 A CN110492909 A CN 110492909A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention discloses a kind of wireless isolated form power line carrier communication performance test methods, include the following steps: that PC machine and programmable attenuator power on, open serial ports, configuration serial ports and wireless communication parameters are to establish communication connection, and survey module and tested module is accompanied to power on, it establishes and is wirelessly connected, wherein survey module, tested module and programmable attenuator is accompanied to power using ups power；Allocation list address parameter, if tested module is single-phase meter module or three-phase meter module, tested module can send Address requests frame by module serial ports after powering on, PC machine replys the corresponding address of request after receiving request；The frequency range parameter of tested module is set；Test data frame is sent, and judges whether the communication of test data frame succeeds；And pad value is automatically adjusted in communication process, PC machine determines tested module anti-decay property in such a way that statistics communicates success rate.The present invention realizes isolation physically, and by using wireless communication and ups power, improves system stability.
Description
Technical field
The present invention relates to technical field of electric power communication, especially with regard to a kind of wireless isolated form power line carrier communication
It can test method and system.
Background technique
Low-voltage power line bandwidth carrier (LVPLC, Low voltage broadband power line carrier
Communication) communication is to be carried out using low-voltage power distribution wire (380/220V user's line) as information transmitting medium
Voice or a kind of specific communication mode of data transmission.
The technology does not need rewiring, and the multiple services carryings such as data, voice and video are realized on existing power line.
The working frequency of general high speed power line carrier wave supports multistage ad hoc network, communication using OFDM modulation system in 0.7M~12M
Rate is more than 1Mbps.Power line carrier physical layer performance test is the key that measure communication performance.
Traditional low-voltage powerline carrier communication Performance Test System use wired connection mode, generally by accompany survey module,
The compositions such as tested module, PC test software platform, mechanical step attenuator, interference source, linear power supply.It accompanies and surveys module, tested mould
Block is communicated by RS232 serial ports with PC machine, and the functions such as parameter configuration, test instruction transmission, test data reception are completed.It accompanies
It surveys module, tested module, interference source and adjustable step attenuator to be connected in series by radio frequency line, component carrier communication channel；Quilt
It surveys module, survey module is accompanied to be provided surely by power supply line to shielded box internal circuit by 220V alternating current by the conversion of external linear power supply
Fixed 12V power supply.It pays for and surveys module as transmitter, tested module as receiver, carry out the test of module communication performance.Ideal feelings
Under condition, in test process, carrier signal surveys module sending by accompanying, and is superimposed by step attenuator with simulation interference source, reaches quilt
Survey module；The pad value for manually adjusting step attenuator plays increase/reduction and accompanies carrier communication between survey module and tested module
The shadow of the effect of the Line Attenuation in channel, the decaying of simulation actual environment mesolow power circuit and line-hit to carrier signal
It rings.Test result is calculated according to the value of step attenuator, and anti-ageing depreciation is bigger, and module communication performance is stronger, on the contrary then lead to
Believe that performance is poorer.
Existing bandwidth carrier communication performance test macro, by tested module unit (by shielded box, Serial Port Line, power supply bottom
Plate, power supply line etc. composition), PC software platform, accompany survey modular unit (with tested module unit form), adjustable step attenuator and
Interference source forms, and between this five capital equipments, accompanies and surveys modular unit, tested module unit, adjustable step attenuator and interference
Source is connected in series by radio frequency line, component carrier communication channel, for simulating live Line Attenuation and disturbed test.
However, in above-mentioned test macro, even if being tested, survey unit being accompanied to do carrier signal and other electric components
Electrical isolation measure cannot guarantee that carrier signal only passes through the loop of rf and reaches tested module, test system through step attenuator
Low-impedance carrier-wave transmission path is still remained in system, when the attenuation ratio of adjustable step attenuator, other low-impedance paths are big,
Accompany the carrier signal for surveying module that can be transmitted to tested module by these low-impedance transmission paths, to cause test macro
Measurement error affects test accuracy.Fig. 1 has marked three low-impedance carrier-wave transmission paths: Serial Port Line, which passes, couples defeated road
Diameter 101, space radiation transmission path 102 and supply lines coupled transfer path 103.
Therefore, existing bandwidth carrier communication performance test macro is primarily present two problems: (1) there are not noticeable
A plurality of low-impedance transmission path；(2) measuring accuracy is poor, low efficiency.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of wireless isolated form power line carrier communication performance test methods and system,
It is able to solve the disadvantages mentioned above of the prior art.
To achieve the above object, the present invention provides a kind of wireless isolated form power line carrier communication performance test methods,
This is wireless, and isolated form power line carrier communication performance test methods include the following steps: that PC machine and programmable attenuator power on, and open
Serial ports configures serial ports and wireless communication parameters to establish communication connection, and survey module and tested module is accompanied to power on, and establishes wireless
Connection, wherein accompany survey module, tested module and programmable attenuator that ups power (uninterruptible power supply) is used to power, and described
Survey module and tested module is accompanied to be arranged in different shielded boxes；Allocation list address parameter, wherein if tested module is single-phase
Table module or three-phase meter module, tested module can send Address requests frame by module serial ports after powering on, and PC machine, which receives, asks
It is replied after asking and requests corresponding address, skip the step if tested module is CCO module；The frequency range ginseng of tested module is set
Number；Test data frame is sent, and judges whether the communication of test data frame succeeds；And decaying is automatically adjusted in communication process
Value, PC machine determine tested module anti-decay property in such a way that statistics communicates success rate.
In a preferred embodiment, the frequency range parameter that tested module is arranged is by accompanying survey module to use 4 work
Frequency range sends what setting frequency range order was realized to tested module respectively, detailed process are as follows: accompanies and surveys module first with frequency range 0 to tested
Module sends setting working frequency range order, and the target operation frequency range of tested module is X, accompanies after being sent completely and surveys module with frequency range X
It is communicated with tested module, illustrates to be arranged successfully if communicating successfully, if communication is unsuccessful, accompanied if surveying module respectively with frequency range
1, it 2,3 repeats the above process, until being arranged successfully.
In a preferred embodiment, test data frame is sent, and judges whether the communication of test data frame successfully has
Body are as follows: under transparent transmission mode, PC machine, which is sent the data to, accompanies survey module, and survey module is accompanied to be sent to data with carrier communication mode
Data are sent to PC machine by serial ports by tested module, tested module, and PC machine compares the data sent and received to sentence
Whether the communication of disconnected test data frame succeeds；Under loopback mode, PC machine, which is sent the data to, accompanies survey module, accompanies survey module that will count
Carrier communication mode is sent to tested module accordingly, and the data received are sent to carrier communication mode and accompany survey by tested module
Module accompanies survey module that data are sent to PC machine by serial ports again, and PC machine compares the data sent and received to judge
Whether the communication of test data frame succeeds.
In a preferred embodiment, finally determine the foundation of tested module anti-decay property are as follows: when pad value is N
When dB, success rate>=90% is communicated, when pad value is (N+1) dB, success rate<90% is communicated, tested module is determined with this
Maximum attenuation value is N dB.
In a preferred embodiment, finally determine the specific decision plan of tested module anti-decay property are as follows: setting
Initial attenuation value is 20dB；Beginning first time communication test, 50 frame of continuous communiction, if the success rate of test communication for the first time <
90%, then by pad value zero setting；Beginning i-th communication test, i=j+k, i=2,3,4 ..., wherein i is that tested module is current
The total degree of communication test, j are communication number of success, and k is communication failure number, 50 frame of continuous communiction, if communication success rate
>=90%, then pad value increases dB, if communication success rate<90%, pad value reduces dB, until increaseing or decreasing pad value tune
It is whole to arrive minimum unit 1dB, tested module anti-decay property is measured at this time, wherein the index that the value of A is 2, A=2,4,8,
16…。
The present invention also provides a kind of wireless isolated form power line carrier communication Performance Test Systems, this is wireless, and isolated form is electric
Powerline carrier communication Performance Test System includes: PC machine, tested module, accompanies and survey module and programmable attenuator；Wherein, PC machine is used
It is set in the first shielded box in configuration serial ports and wireless communication parameters, tested module, is connected by serial ports with wireless module
And power for wireless module, the antenna of wireless module is drawn out to outside the first shielded box；Tested module is set in secondary shielding case,
It is connected by serial ports with wireless module and is wireless module power supply, the antenna of wireless module is drawn out to outside secondary shielding case；And
Wherein, tested module, accompany and survey module and programmable attenuator and be all made of ups power power supply, and PC machine and accompanying surveys module, tested
It is communicated to connect by wireless module between module, programmable attenuator.
In a preferred embodiment, carrier signal in tested module and accompanies the transmission path surveyed between module to be constructed
Are as follows: under transparent transmission mode, PC machine, which is sent the data to, accompanies survey module, accompany survey module by data with carrier communication mode be sent to by
Module is surveyed, data are sent to PC machine by serial ports, compared by PC machine to the data sent and received by tested module；In
Under loopback mode, PC machine, which is sent the data to, accompanies survey module, accompanies survey module that data are sent to tested mould with carrier communication mode
The data received are sent to carrier communication mode and accompany survey module by block, tested module, accompany survey module that data are passed through string again
Mouth is sent to PC machine, is compared by PC machine to the data sent and received.
In a preferred embodiment, pad value, and PC are automatically adjusted in communication process by programmable attenuator
Machine is in such a way that statistics communicates success rate come determining module anti-decay property.
In a preferred embodiment, it is identical to send and receive frequency in semiduplex mode for wireless module work；Wirelessly
Module has multiple non-interfering logically and physically channels, if there is multiple test macros, then by configuring so that multiple surveys
The module being in communication with each other in test system uses different channels.
In a preferred embodiment, wireless module, which has, carries out the power line carrier communication data sended and received
Subpackage and group bag processing function, wherein subpackage and Group Package Policy are as follows: right when wireless module needs to forward carrier communication data
Power line carrier communication raw data packets are unpacked, and increase by 2 bytes on data subpackage head with the class for identifying subpackage
Then other and serial number successively sends the subpackage after unpacking；When wireless module does not send wireless data, shape is waited in receiving
State, from the classification and serial number of the 2 byte identification subpackages in head, is successively packaged and is cached when receiving wireless subpackage, when
When receiving the complete subpackage of whole of data packet, purpose receiving end is disposably sent for recovery data packets by serial ports.
Compared with prior art, wireless isolated form power line carrier communication performance test methods according to the present invention and system
It has the advantages that by the present invention in that being improved system stability with the method wirelessly communicated with ups power, being avoided not
With the inconsistent problem of test result under time varying environment, test result has higher accuracy；And it is adjusted using automatic
The mode for saving pad value, realizes the efficient calculating of anti-decay property, reduces tester's workload, improves test effect
Rate.Existing serial communication mode is improved to the communication mode that serial ports turns wireless simultaneously, carrier signal is eliminated and passes through serial ports
Common ground coupled transfer is influenced caused by test result, compared to the way for increasing isolating chip on Serial Port Line road, we
The isolation effect of case is relatively reliable.
Detailed description of the invention
Fig. 1 is the bandwidth carrier communication performance test system structure block diagram of the prior art；
Fig. 2 is wireless isolated form power line carrier communication performance test methods process according to an embodiment of the present invention
Figure；
Fig. 3 is setting tested module frequency range parameter flow chart according to an embodiment of the present invention；
Fig. 4 is the specific decision plan process of judgement tested module anti-decay property according to an embodiment of the present invention
Figure；
Fig. 5 is wireless isolated form power line carrier communication Performance Test System structural frames according to an embodiment of the present invention
Figure；
Fig. 6 is radio channel allocation rule schematic diagram according to an embodiment of the present invention；
Fig. 7 is the communication scheme of wireless module according to an embodiment of the present invention；
Fig. 8 is traditional wireless forwarding processing method schematic diagram；
Fig. 9 is the schematic diagram being identified to packetized data according to an embodiment of the present invention；
Figure 10 is that packet flow chart is unpacked and organized to wireless communication according to an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Fig. 2, wireless isolated form power line carrier communication performance test side according to the preferred embodiment of the present invention
Method includes the following steps:
Step 201:PC machine and programmable attenuator power on, and open serial ports, configure serial ports and wireless communication parameters are logical to establish
Letter connection, and accompany and survey module and tested module and power on, establishes and is wirelessly connected, wherein accompanies and surveys module, tested module and program-controlled decline
Subtract device to power using ups power, and described accompany is surveyed module and tested module and be arranged in different shielded boxes；
Step 202: allocation list address parameter, wherein if tested module is single-phase meter module or three-phase meter module, quilt
Address requests frame can be sent by module serial ports by surveying after module powers on, PC machine replys the corresponding address of request after receiving request,
The step is skipped if tested module is CCO module；
Step 203: the frequency range parameter of tested module is set；
Step 204: sending test data frame, and judge whether the communication of test data frame succeeds；And
Step 205: pad value is automatically adjusted in communication process, PC machine determines quilt in such a way that statistics communicates success rate
Survey module anti-decay property.
In above scheme, for tester, the initial frequency range of tested module is uncertain, therefore tested mould is arranged
The frequency range parameter of block is that frequency range order realization is arranged by accompanying to survey module and send to tested module respectively using 4 working frequency range
, it is assumed that tested module is arranged to target frequency bands X, M is to accompany to survey module working frequency range (M=0,1,2,3), as shown in figure 3, tool
Body process are as follows: accompany and survey module first with frequency range 0 to tested module transmission setting working frequency range order, be arranged by frequency range M tested
The target frequency bands X of module is accompanied after being sent completely and is surveyed module with frequency range X and tested module communication, illustrates to set if communicating successfully
It is set to function, if communication is unsuccessful, accompanies and is repeated the above process respectively with frequency range 1,2,3 if surveying module, until being arranged successfully.
In step 204, test data frame is sent, and judge whether the communication of test data frame succeeds specifically: in transparent transmission
Under mode, PC machine, which is sent the data to, accompanies survey module, accompanies survey module that data are sent to tested module, quilt with carrier communication mode
It surveys module and data is sent to PC machine by serial ports, PC machine compares the data sent and received to judge test data frame
Communication whether succeed；Under loopback mode, PC machine, which is sent the data to, accompanies survey module, accompanies and surveys module for data with carrier communication
Mode is sent to tested module, and the data received are sent to carrier communication mode and accompany survey module by tested module, accompanies survey mould
Data are sent to PC machine by serial ports again by block, and PC machine compares the data sent and received to judge test data frame
Whether communication succeeds.
In step 205, the final foundation for determining tested module anti-decay property are as follows: when pad value is N dB, communication at
Power>=90% communicates success rate<90%, determines that the maximum attenuation value of tested module is with this when pad value is (N+1) dB
N dB.As shown in figure 4, finally determining the specific decision plan of tested module anti-decay property are as follows: setting initial attenuation value is N
dB；Start first time communication test, 50 frame of continuous communiction, if success rate < 90% of test communication for the first time, pad value is set
Zero；Beginning i-th communication test, i=j+k, i=2,3,4 ..., wherein i is the total degree of tested module present communications test, j
To communicate number of success, k is communication failure number, 50 frame of continuous communiction, if communication success rate >=90%, pad value increase
DB, if communication success rate < 90%, pad value reduce dB, until increaseing or decreasing pad value is adjusted to minimum unit 1dB, this
When measure tested module anti-decay property, wherein the value of A be 2 index, A=2,4,8,16 ....Wherein, program-controlled decaying
The initial attenuation value of device is set as 20dB.
As shown in figure 5, the present invention also provides a kind of wireless isolated form power line carrier communication Performance Test System, the nothing
Line isolated form power line carrier communication Performance Test System includes: PC machine 501, tested module 502, accompanies and survey module 503, program-controlled decline
Subtract device 504, ups power 507 and wireless module；Wherein, for configuring serial ports and wireless communication parameters, tested module is set PC machine
It is placed in the first shielded box 505, is connected by serial ports with wireless module and is wireless module power supply, the antenna of wireless module draws
Out to outside the first shielded box 505；Tested module is set in secondary shielding case 506, is connected by serial ports with wireless module and is
Wireless module power supply, the antenna of wireless module are drawn out to outside secondary shielding case 506；And wherein, tested module 502, accompany survey mould
Block 503 and programmable attenuator 504 be all made of ups power 507 power supply, and PC machine 501 and accompany survey module 303, tested module
502, it is communicated to connect by wireless module 508 between programmable attenuator 504.The present invention is by being physically thoroughly isolated electric power
The possible coupling path of line carrier signal to improve measuring accuracy, and adjusts test path decaying by program controlled automatic
Value, helps that tester is quick and convenient must obtain measurement result, improves testing efficiency.
In above scheme, the testing process of wireless isolated form power line carrier communication Performance Test System includes: firstly, PC
Machine and programmable attenuator power on, and open serial ports, configure serial ports and wireless communication parameters to establish communication connection, and accompany survey module
It is powered on tested module, establishes and be wirelessly connected, wherein survey module, tested module and programmable attenuator is accompanied ups power to be used to supply
Electricity；Allocation list address parameter, wherein if tested module is single-phase meter module or three-phase meter module, after tested module powers on
Address requests frame can be sent by module serial ports, PC machine replys the corresponding address of request after receiving request, if tested module
It is that CCO module then skips the step；The frequency range parameter of tested module is set；Test data frame is sent, and judges test data frame
Communication whether succeed；And pad value is automatically adjusted in communication process, PC machine is in such a way that statistics communicates success rate come really
Determine tested module anti-decay property.
In a preferred embodiment, carrier signal in tested module and accompanies the transmission path surveyed between module to be constructed
Are as follows: under transparent transmission mode, PC machine, which is sent the data to, accompanies survey module, accompany survey module by data with carrier communication mode be sent to by
Module is surveyed, data are sent to PC machine by serial ports, compared by PC machine to the data sent and received by tested module；In
Under loopback mode, PC machine, which is sent the data to, accompanies survey module, accompanies survey module that data are sent to tested mould with carrier communication mode
The data received are sent to carrier communication mode and accompany survey module by block, tested module, accompany survey module that data are passed through string again
Mouth is sent to PC machine, is compared by PC machine to the data sent and received.
As shown in fig. 6, it is identical to send and receive frequency in semiduplex mode for wireless module 1-6 work；Wireless module 1-
6 have multiple (such as N number of) non-interfering logically and physically channel, and two modules being in communication with each other are to using the same logic
The physical channel and；If there is multiple test macros, then by configuring so that the module being in communication with each other in multiple test macros is equal
Using different channels, to avoid air interference, a kind of allocation rule such as Fig. 6, wherein channel C Hi1、CHj1、CHk1、CHi2、
CHj2、CHk2Mutually different logically and physically channel between 1-N.
As shown in fig. 7, each wireless module is connected with transmitting terminal to be communicated with receiving end by serial ports, communication process
Be: data are sent to wireless transmission end by serial ports by originally transmitted end, and wireless transmission end carries out subpackage to long data packet, wirelessly
Data after subpackage are transferred to wireless receiving end, the packetized data that wireless receiving end will receive by being wirelessly transferred by transmitting terminal
It packages, wireless receiving end sends purpose receiving end by serial ports for the data after group packet.
Generally, power line carrier communication data message frame is longer, and maximum can achieve 2048 bytes, and wireless module is every
The data that one frame is sent are fewer, generally less than 128 bytes；Traditional wireless forwarding processing method passes through string by originally transmitted end
Mouth is sent to wireless transmission end module, and wireless transmission end module carries out subpackage wireless transmission, and wireless receiving end module receives wirelessly
Serial ports is passed sequentially through after subpackage and is transmitted to purpose receiving end, and the data that this method purpose receiving end receives are the data slice after cutting
Section, there are T between data slotintTime interval is easy when data processing to abandon as incomplete data, causes to communicate
It is unsuccessful, as shown in Figure 8.However, wireless module of the invention has automatic subpackage and group packet function, it is ensured that power line is logical
Letter the disposable of message completely sends and receives.
As shown in figs. 9-10, the wireless module passes through the packet identification code of 2 bytes at wireless transmission end, to packetized data
It is identified, byte 1 indicates that the mark of data subpackage, byte 2 indicate that the serial number of subpackage counts.Wireless module is carried when needs forward
It when wave communication data, unpacks to power line carrier communication raw data packets, increases by 2 bytes on data subpackage head and be used for
The classification and serial number of subpackage are identified, packet, tundish, end packet are such as originated.Then the subpackage after unpacking successively is sent；Wireless module
When not sending wireless data, in wait state is received, when receiving wireless subpackage, from 2, head, byte identifies subpackage
Classification and serial number, successively package and cache, it is disposable by serial ports when the complete subpackage of the whole for receiving data packet
Purpose receiving end is sent by recovery data packets.
Therefore, wireless communication module uses a plurality of independent logically and physically channel to eliminate between test macro in the present invention
Interference；In addition, wireless module, which has, carries out subpackage and group bag processing function to the power line carrier communication data sended and received,
It can guarantee that the disposable of power line communication message completely sends and receives.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (10)
1. a kind of wireless isolated form power line carrier communication performance test methods, which is characterized in that the wireless isolated form electric power
Line carrier communication performance test methods include the following steps:
PC machine and programmable attenuator power on, and open serial ports, configure the serial ports and wireless communication parameters to establish communication connection, and
And survey module and tested module is accompanied to power on, it establishes and is wirelessly connected, wherein described accompany surveys module, tested module and programmable attenuator
It is powered using ups power, and described accompany is surveyed module and tested module and be arranged in different shielded boxes；
Allocation list address parameter, wherein if the tested module is single-phase meter module or three-phase meter module, the tested mould
Block can send Address requests frame by module serial ports after powering on, the PC machine replys the request correspondingly after receiving request
The step is skipped if the tested module is CCO module in location；
The frequency range parameter of the tested module is set；
Test data frame is sent, and judges whether the communication of the test data frame succeeds；And
Pad value is automatically adjusted in communication process, the PC machine determines the tested mould in such a way that statistics communicates success rate
Block anti-decay property.
2. wireless isolated form power line carrier communication performance test methods as described in claim 1, which is characterized in that described to set
The frequency range parameter for setting the tested module is to survey module using 4 working frequency range respectively to tested module hair by described accompany
Setting frequency range order is sent to realize, detailed process are as follows: described that survey module is accompanied to send setting to the tested module with frequency range 0 first
Working frequency range order, the target operation frequency range of the tested module are X, and described accompany surveys module with frequency range X and institute after being sent completely
State tested module communication, illustrate to be arranged successfully if communicate successfully, if communication is unsuccessful, it is described accompany survey module if respectively with
Frequency range 1,2,3 repeats the above process, until being arranged successfully.
3. wireless isolated form power line carrier communication performance test methods as claimed in claim 2, which is characterized in that the hair
Test data frame is sent, and judges whether the communication of the test data frame succeeds specifically:
Under transparent transmission mode, the PC machine send the data to it is described accompany survey module, described accompany surveys module for the data to carry
Wave communication mode is sent to the tested module, and the data are sent to the PC machine, institute by serial ports by the tested module
State whether the communication that PC machine compares the data sent and received to judge the test data frame succeeds；
Under loopback mode, the PC machine send the data to it is described accompany survey module, described accompany is surveyed module and is led to data with carrier wave
Letter mode is sent to the tested module, and the data received are sent to described accompany with carrier communication mode by the tested module
Survey module, described accompany survey module the data are sent to the PC machine by serial ports again, and the PC machine is to sending and receiving
Whether the communication that data compare to judge the test data frame succeeds.
4. isolated form power line carrier communication performance test methods as described in claim 1 wireless, which is characterized in that it is described most
The foundation of the tested module anti-decay property is determined eventually are as follows: when pad value is N dB, is communicated success rate >=90%, is worked as decaying
When value is (N+1) dB, success rate < 90% is communicated, determines the maximum attenuation value of the tested module for N dB with this.
5. isolated form power line carrier communication performance test methods as claimed in claim 4 wireless, which is characterized in that it is described most
The specific decision plan of the tested module anti-decay property is determined eventually are as follows:
Setting initial attenuation value is 20dB；
Start first time communication test, 50 frame of continuous communiction, if success rate < 90% of test communication for the first time, by pad value
Zero setting；
Beginning i-th communication test, i=j+k, i=2,3,4 ..., wherein i is the total degree of tested module present communications test,
J is communication number of success, and k is communication failure number, 50 frame of continuous communiction, if communication success rate >=90%, pad value increase
AddIf communicating success rate < 90%, pad value reduces Until increaseing or decreasing pad value is adjusted to minimum
Unit 1dB measures the tested module anti-decay property at this time, wherein the index that the value of A is 2, A=2, and 4,8,16 ....
6. a kind of wireless isolated form power line carrier communication Performance Test System, which is characterized in that the wireless isolated form electric power
Line carrier communication Performance Test System includes: PC machine, tested module, accompanies and survey module, programmable attenuator, wireless module and UPS
Power supply；
Wherein, for configuring serial ports and wireless communication parameters, the tested module is set in the first shielded box the PC machine, is led to
It crosses serial ports to be connected with wireless module and be the wireless module power supply, the antenna of the wireless module is drawn out to first screen
It covers outside case；The tested module is set in secondary shielding case, is connected by serial ports with wireless module and is the wireless module
Power supply, the antenna of the wireless module are drawn out to outside the secondary shielding case；
And wherein, the tested module, accompany and survey module and programmable attenuator and be all made of the ups power power supply, and institute
State PC and accompany survey module, tested module, between programmable attenuator by wireless module communication connection.
7. wireless isolated form power line carrier communication Performance Test System as claimed in claim 6, which is characterized in that carrier wave letter
Number the tested module and accompany survey module between transmission path be configured to:
Under transparent transmission mode, the PC machine send the data to it is described accompany survey module, described accompany surveys module for the data to carry
Wave communication mode is sent to the tested module, and the data are sent to the PC machine by serial ports by the tested module, leads to
The PC machine is crossed to compare the data sent and received；Under loopback mode, the PC machine sends the data to described accompany
Module is surveyed, described to accompany survey module that data are sent to the tested module with carrier communication mode, the tested module will receive
To data with carrier communication mode be sent to it is described accompany survey module, described accompany surveys module the data is passed through serial ports transmission again
To the PC machine, the data sent and received are compared by the PC machine.
8. wireless isolated form power line carrier communication Performance Test System as claimed in claim 7, which is characterized in that pass through institute
State programmable attenuator and automatically adjust pad value in communication process, and the PC machine in such a way that statistics communicates success rate come
Determining module anti-decay property.
9. wireless isolated form power line carrier communication Performance Test System as claimed in claim 6, which is characterized in that the nothing
Wire module works in semiduplex mode, and it is identical to send and receive frequency；The wireless module has multiple non-interfering logics
And physical channel, if there is multiple test macros, then by configuring the mould being in communication with each other so that in the multiple test macro
Block uses different channels.
10. wireless isolated form power line carrier communication Performance Test System as claimed in claim 9, which is characterized in that described
Wireless module, which has, carries out subpackage and group bag processing function to the power line carrier communication data sended and received, wherein subpackage
With a group specific strategy for packet are as follows:
When the wireless module needs to forward carrier communication data, unpack to power line carrier communication raw data packets,
Increase by 2 bytes on data subpackage head with the classification and serial number for identifying subpackage, then successively sends the subpackage after unpacking；
When wireless module does not send wireless data, in wait state is received, when receiving wireless subpackage, from 2, head byte
The classification and serial number for identifying subpackage, successively package and cache, when the complete subpackage of the whole for receiving data packet, pass through string
Mouth disposably sends purpose receiving end for recovery data packets.
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