CN106211224B - Wirelessly communicate the standing wave Fault Locating Method and system of indoor distributed system - Google Patents
Wirelessly communicate the standing wave Fault Locating Method and system of indoor distributed system Download PDFInfo
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- CN106211224B CN106211224B CN201610602526.6A CN201610602526A CN106211224B CN 106211224 B CN106211224 B CN 106211224B CN 201610602526 A CN201610602526 A CN 201610602526A CN 106211224 B CN106211224 B CN 106211224B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/22—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks comprising specially adapted graphical user interfaces [GUI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/06—Testing, supervising or monitoring using simulated traffic
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Abstract
A kind of standing wave Fault Locating Method and system wirelessly communicating indoor distributed system is the system diagram and plan view for inputting indoor distributed system, inputs initial testing node；First in initial testing node test standing-wave ratio assignment test data, suspected fault point is filtered out according to the threshold value provided；Suspected fault point is matched with system diagram, is filtered out suspect node, and compensate according to link attenuation, is calculated the standing wave value of suspect node, judge whether it is actual fault point；When having multiple nodes corresponding with suspected fault point and cannot uniquely confirm, backtracking provides next step test node and repetitive operation until accurately obtaining malfunctioning node.Using technical solution of the present invention, engineering staff's in-situ processing can be prompted, until the processing of all fault points is completed.The present invention solves the passive indoor distributed system malfunction elimination process complexity of conventional wireless network, inefficiency, the problem of failing to judge, judge by accident.
Description
Technical field
The invention belongs to mobile communication indoor distribution system field, in particular to a kind of wireless communication indoor distributed system
Standing wave fault point positioning method and system.
Background technique
The indoor distributed system of mobile communication is mainly made of active equipment and passive compartment system, wherein without source distribution system
System is made of feeder line, passive device, antenna, realizes transmission and covering of the radiofrequency signal in building.Indoor distributed system
Malfunction elimination mainly includes two steps of fault location and troubleshooting, wherein the malfunction elimination of passive compartment system is heavy for its
Point.Construction quality and the quality problems of passive device are the major failure of passive compartment system, will cause mobile communication system bottom
Make an uproar lifting, covering it is bad, speech quality is poor, call drop the problems such as.
With the development of mobile communication technology, the effect of indoor distributed system is more and more important, after steel tower company sets up, room
Divide the degree of Joint construction and sharing higher, the frequency range and standard of combining are also more and more, thus mention to the quality of indoor distributed system
Higher requirement is gone out.At this stage, the failure of indoor passive compartment system mainly passes through the side of standing-wave ratio test and intermodulation testing
Method is checked.Since compartment system has used a certain number of passive devices, the Insertion Loss of passive device and feeder line is to test
There are large effects for value, are formed and are misled to the judgement of failure, are easy to omit fault point；Room subsystem is right there are a plurality of branch
The judgement of fault point specific location forms certain interference.Therefore at present when carrying out fault location, to the technical requirements of engineering staff
It is higher with skill requirement, troubleshooting procedure complexity, inefficiency, and since fault point omission probability is higher, rectify and improve effect often not
It is ideal.
Summary of the invention
The present invention complicated, inefficiency for passive compartment system malfunction elimination process, easily omission fault point, rectify and improve effect
Undesirable problem proposes to realize a kind of nothing in conjunction with room subsystem schematic diagram and plan view using standing-wave ratio assignment test data
The standing wave fault point positioning method and system of line communication indoor distributed system.
The present invention provides a kind of standing wave Fault Locating Method for wirelessly communicating indoor distributed system, comprising the following steps:
Step 501, the system diagram and plan view for inputting indoor distributed system, enter step 502；
Step 502, initial testing node is inputted, one is taken as current initial testing node, enters step 503；
Step 503, the feed line length and link attenuation for calculating each node to current initial testing node, enter step
504；
Step 504, in the fault location mode standing-wave of current initial testing node location test compartment system than data,
Enter step 505；
Step 505, test gained standing-wave ratio data are compared with preset threshold value Q1, are greater than the sampling of Q1 if it exists
Point, then enter step 507；
It is greater than the sampled point of Q1 if it does not exist, enters step 506；
Step 506, judge whether that the test job of all initial testing nodes is completed, if being completed, terminate
This process；If no, removing an initial testing node as current initial testing node from step 503, respective compartments are carried out
Subsystem fault location；
Step 507, the feed line length L and standing-wave ratio V that all standing-wave ratios are more than the sampled point of threshold value Q1 are recorded, into step
Rapid 508；
Step 508, it takes current sampling point to be matched with system diagram one by one from each sampled point that step 507 records, enters
Step 509；
Step 509, if current sampling point and the matched node of system diagram are unique, 510 are entered step；If the sampled point with
The matched node of system diagram is not unique, then enters step 514；
Step 510, if current sampling point and the matched unique node of system diagram are denoted as a, returning for institute matched node a is calculated
RL is lost in wave, and the practical standing-wave ratio Vt of calculate node, the standing wave threshold value Q2 of calculate node enter step 511；
Step 511, if current node a meets RL≤2PL or Vt > Q2, which is fault point, is entered step
512；If being unsatisfactory for above-mentioned condition, 513 are entered step；
Step 512, after the completion of the failure for handling node a at the scene, 513 are entered step；
Step 513, judge whether that all standing-wave ratios are more than that the sampled point of threshold value Q1 is processed completion, weighed if all completing
The standing-wave ratio data for newly testing current initial testing node, reenter step 504；If all not completing, handle next
Standing-wave ratio is more than that the sampled point of threshold value Q1 enters step 508 as new current sampling point；
Step 514, judge whether current sampling point and the matched interstitial content of system diagram are 2, if then entering step
515, otherwise enter step 518；
Step 515, if current sampling point and matched 2 nodes of system diagram are denoted as a, b, if the maximum standing-wave ratio of node a
Va is greater than the maximum standing-wave ratio Vb of node b, enters step 516；
Step 516, if sampled point test gained standing-wave ratio is that V is synchronized if meeting Vb < V < Va and entered step 517
And step 510, otherwise enter step 518；
Step 517, on-the-spot test node b then handles if fault point, enters step 513 after the completion；
Step 518, according to the matched multiple nodes of sampled point, recalled, as untreated initial testing node, into
Enter step 503.
Moreover, calculating return loss RL, the practical standing-wave ratio Vt of calculate node of institute matched node a, meter in step 510
When the standing wave threshold value Q2 of operator node, implementation is as follows,
If a certain sampled point filtered out, standing-wave ratio V,
Wherein, PL is link load with the matched node of sampled point to initial testing node, and PLM is input port to defeated
The maximum Insertion Loss of exit port.
Moreover, in step 515, when the maximum standing-wave ratio Vb of the maximum standing-wave ratio Va and node b of calculate node a, realization side
Formula is as follows,
Wherein, if the link loss value of node a is PLa, the link loss value of node b is PLb.
The present invention also provides a kind of standing wave fault location systems for wirelessly communicating indoor distributed system, including with lower unit:
Unit 501, inputs the system diagram and plan view of indoor distributed system, and order unit 502 works；
Unit 502, input initial testing node, take one as current initial testing node, 503 work of order unit
Make；
Unit 503 calculates the feed line length and link attenuation of each node to current initial testing node, order unit
504 work；
Unit 504, current initial testing node location test compartment system fault location mode standing-wave than data,
Order unit 505 works；
Test gained standing-wave ratio data are compared with preset threshold value Q1, are greater than the sampling of Q1 if it exists by unit 505
Point, then order unit 507 works；
It is greater than the sampled point of Q1 if it does not exist, order unit 506 works；
Unit 506 judges whether that the test job of all initial testing nodes is completed, if being completed, terminates
This process；If no, removing an initial testing node as current initial testing node from unit 503, respective compartments are carried out
Subsystem fault location；
Unit 507, records feed line length L and standing-wave ratio V that all standing-wave ratios are more than the sampled point of threshold value Q1, and order is single
Member 508 works；
Unit 508, each sampled point recorded from unit 507 take current sampling point to be matched with system diagram, order one by one
Unit 509 works；
Unit 509, if current sampling point and the matched node of system diagram are unique, order unit 510 works；If the sampling
Point is not unique with the matched node of system diagram, then order unit 514 works；
Unit 510 calculates returning for institute matched node a if current sampling point and the matched unique node of system diagram are denoted as a
RL, the practical standing-wave ratio Vt of calculate node, the standing wave threshold value Q2 of calculate node is lost in wave, and order unit 511 works；
Unit 511, if current node a meets RL≤2PL or Vt > Q2, which is fault point, order unit 512
Work；If being unsatisfactory for above-mentioned condition, order unit 513 works；
Unit 512, at the scene after the completion of the failure of processing node a, order unit 513 works；
Unit 513 judges whether that all standing-wave ratios are more than that the sampled point of threshold value Q1 is processed completion, weighs if all completing
The standing-wave ratio data of current initial testing node are newly tested, order unit 504 works again；If all not completing, under processing
One standing-wave ratio is more than the sampled point of threshold value Q1, and as new current sampling point, order unit 508 works；
Unit 514 judges whether current sampling point and the matched interstitial content of system diagram are 2, if then order unit 515
Work, otherwise order unit 518 works；
Unit 515, if current sampling point and matched 2 nodes of system diagram are denoted as a, b, if the maximum standing-wave ratio of node a
Va is greater than the maximum standing-wave ratio Vb of node b, and order unit 516 works；
Unit 516, if sampled point test gained standing-wave ratio is V, if meeting Vb < V < Va, synch command unit 517
Work and unit 510 work, and otherwise order unit 518 works；
Unit 517, on-the-spot test node b are then handled if fault point, are completed post command unit 513 and are worked；
Unit 518 is recalled according to the matched multiple nodes of sampled point, as untreated initial testing node, life
Unit 503 is enabled to work.
Moreover, calculating return loss RL, the practical standing-wave ratio Vt of calculate node of institute matched node a, meter in unit 510
When the standing wave threshold value Q2 of operator node, implementation is as follows,
If a certain sampled point filtered out, standing-wave ratio V,
Wherein, PL is link load with the matched node of sampled point to initial testing node, and PLM is input port to defeated
The maximum Insertion Loss of exit port.
Moreover, in unit 515, when the maximum standing-wave ratio Vb of the maximum standing-wave ratio Va and node b of calculate node a, realization side
Formula is as follows,
Wherein, if the link loss value of node a is PLa, the link loss value of node b is PLb.
The present invention relates to a kind of standing wave Fault Locating Methods and system for wirelessly communicating indoor distributed system, are for room point
In system malfunction elimination.It is automatic to carry out breakdown judge and determine using standing wave test data and compartment system schematic diagram and plan view
Position, can compensate for path loss, and direct accurate marker, which is out of order, position a little and practical standing wave ratio or points out that next step is tested
Node position and practical standing wave ratio a little until accurate marker is out of order, and be shown on schematic diagram and plan view, it solves
Compartment system malfunction elimination process of having determined complexity, inefficiency, easily omission fault point, the undesirable problem of rectification effect.
Detailed description of the invention
Fig. 1 is the standing wave assignment test waveform diagram of the embodiment of the present invention；
Fig. 2 is that the indoor distributed system principal diagram of the embodiment of the present invention is intended to；
Fig. 3 is the indoor distributed system plan view schematic diagram of the embodiment of the present invention；
Fig. 4 is the hardware adaptations schematic diagram of the embodiment of the present invention；
Fig. 5 is that fault location flow chart is divided in the room of the embodiment of the present invention；
Fig. 6 is the basic schematic diagram of the embodiment of the present invention.
Specific embodiment
Below in conjunction with drawings and examples the present invention will be described in detail technical solution.
Referring to Fig. 6, the breakdown judge and precise positioning method of indoor distributed system provided in an embodiment of the present invention, including into
The following operation of row:
Firstly, the schematic diagram of indoor distributed system and plan view are imported, initial testing node is inputted, and with each antenna
It is node with device, calculates the line length L and link attenuation PL of each node to initial testing node.Usually determine initial survey
When trying node, multisystem mixing is then the node after combiner, and single system is then base station machine top；Feeder line attenuation adds device Insertion Loss i.e.
For link load,
Then, the standing-wave ratio test result of compartment system is inputted, when it is implemented, can be by engineering staff according to initial testing
Node carries out the standing-wave ratio test of compartment system at the scene in advance, is gone out according to test result preliminary screening suspicious at the node
Sampled point, the node data that combination principle diagram is precipitated, the matching of sampled point and node is carried out using line length, if node
With unique, then the link load of the node is compensated, the approximate standing-wave ratio of the node is calculated, and compare with threshold value, sentences
Whether the node that breaks is fault point.If not unique using the matched node of length, in the case where not can confirm that fault point, mark
It suspected fault point and points out next test node out, and repeats the above, until confirming fault point.The event of all confirmations
Barrier point makes mark in schematic diagram and plan view, and engineering staff is instructed to carry out live investigation.
Further, propose that specific implementation is as follows:
It is standing-wave ratio firstly, testing the standing-wave ratio assignment test data of whole system in a port of compartment system
With the curve that feed line length changes, each sampled point includes two data: distance and standing-wave ratio are denoted as (L, V)；
Then, test data is screened, picks out the sampled point that test gained standing-wave ratio V value exceeds threshold value Q1, knot
The schematic diagram for closing compartment system calibrates and is less than a certain range of node with select sampled point L value error, if node mark
It is fixed unique, then according to the link load PL of calculated test point to fault point, link load is compensated again, calculates and marks
The practical standing wave ratio Vt of the fault point is shown, if Vt exceeds threshold value Q2, then it is assumed that the point is fault point, system in schematic diagram and
Node location is indicated in plan view, to instruct engineering staff scene to check, position fixing process is completed；
Q1: guaranteeing system entirety standing-wave ratio, be unlikely to cause system interference, is fixed value, this field skill when specific implementation
Art personnel can preset value；
Q2: guaranteeing the construction quality of each node, individually calculates value according to the device property of each node；
The calculation method of Q2: the maximum port Insertion Loss of node device input to output is RL, then suggests valueThe transformational relation of standing-wave ratio and return loss:
Standing-wave ratio: VSWR
Return loss: RL
If a certain sampled point filtered out, feed line length and standing-wave ratio are denoted as L, V respectively, with the matched section of sampled point
Point, until the link load of test node is PL, the maximum Insertion Loss of input port to output port is PLM；
Using the sampled point as known suspected fault point, it is known that suspected fault point link load PL, standing-wave ratio test value V,
Then:
Calculate suspected fault point return loss:
The standing-wave ratio of node after compensation link loss, that is, the practical standing wave ratio calculated
The standing-wave ratio threshold value of calculate node:
If R≤2PL or Vt > Q2, the suspected fault point are confirmed as actual fault point.
If node calibration is not unique, according to system diagram, the maximum standing-wave ratio of these nodes is calculated first.Assuming that A node
Link loss value be PLa, the link loss value of B node is PLb, and PLa < PLb, then the corresponding maximum standing-wave ratio of node A, B
Value is respectively
If Vb < V < Va, the practical standing wave ratio of A point is calculated, and compare with the Q2 thresholding of A point, judged；B
Node needs engineering staff that test is gone to judge；
If two nodes of V > Va, A, B are both needed to go to node on-the-spot test；
If V < Vb cannot judge fault point for A or B；At this point, dateing back its first common node from A, B node
C, and in system diagram and the position for referring to egress C in plan view, the prompt that Field Force provides according to system, the two of C node
A branch road carries out standing wave test respectively again and carries out calculating judgement, to confirm fault point for A or B.
When node calibration number is greater than 2, the case where judging fault point according to sampled point standing wave ratio V, is more complex, then
Directly recall branch node, test each branch standing wave respectively and calculate judgement, simplifies process.
By taking certain indoor distributed system as an example, specifically to trouble spot judging and positioned such as using the provided technical solution of embodiment
Under:
The schematic diagram of indoor distributed system and plan view are imported,
As shown in Figure 2 and Figure 3, mark is included the following three types:
Feeder line mark: such as 0.7dB/10m indicates feed line length 10m, and the transmission loss under special frequency channel is 0.7dB.
Device mark: two road power splitters are denoted as PS1, PS2, PS3；The degree of coupling of coupler T1, T2, T3, T4, T5 is respectively
12dB、6dB、10dB、6dB、6dB。
Antenna mark: domestic aerial is denoted as ANT1, ANT2 ... ANT9.
Initial testing node is the circle in left side in Fig. 2 schematic diagram；Using each passive device and antenna as node, calculate every
A node to initial testing node distance and link load；Engineering staff tests according to the node of prompt at the scene, obtains
To the data of standing-wave ratio assignment test, as shown in figure 1 shown in curve 101.
Mark in Fig. 1 is as follows:
VSWR: voltage standing wave ratio, no unit.
Distance: distance indicates that the wireless signal transmission distance of surveyed standing-wave ratio test value and test node, unit are
Rice.
Standing wave threshold value: preset detected value, standing-wave ratio are more than that the point of the value then needs to carry out next step analysis.
Sample point data and 102 standing wave threshold value Q1 in standing-wave ratio Fig. 1 are compared, off-limits sampling is filtered out
Point, as shown in figure 1 103 and 104, it is suspected fault point.
The data that suspected fault point 103 samples are L=45m, and standing-wave ratio V=1.08 is matched by L value, corresponding
201 nodes in Fig. 2 systematic schematic diagram:
The return loss of calculate node 201:
Egress 201 link load PL=14dB, R can be calculated by systematic schematic diagram and be greater than 2PL, then:
Calculate 201 practical standing wave ratio
The device maximum port Insertion Loss of node 201 is 6dB, then thresholding
Then node 201 meets the condition of R≤2PL or Vt > Q2, can determine that node 201 is fault point.
The data that suspected fault point 104 samples are L=60m, and standing wave V=1.07 is matched by L value, can be corresponded to
202 and 203 nodes in Fig. 2 systematic schematic diagram.
202 link load PL202=6dB of egress can be calculated by systematic schematic diagram, then the testable maximum of node 202
Standing-wave ratio is
203 link load PL203=21.2dB of egress can be calculated by systematic schematic diagram, then node 203 is testable
Maximum standing-wave ratio is
According to Rule of judgment:
If Vb < V < Va, it is recommended that preferential scene investigation node A；
If there is failure in two nodes of V > Va, A, B；
If V < Vb cannot judge fault point for A or B；
Because meeting V203 < V < V202, then the failure of node 202 should be preferentially checked:
The return loss of calculate node 202:
Calculate 202 practical standing wave ratio
The device maximum port Insertion Loss of node 202 is 6dB, then thresholding
Vt is less than Q2, then judges that 202 be not fault point；
Regardless of whether 202 be fault point, 203 are both needed to engineering staff to node test.
Technical solution of the present invention can be used software technology and realize automatic running process.For the sake of ease of implementation, it provides
The specific implementation flow of embodiment.Referring to Fig. 5, embodiment carries out room using system and divides the process of breakdown judge as follows:
Step 501, the system diagram (i.e. the abbreviation of systematic schematic diagram) and plan view for inputting indoor distributed system, enter step
502；
Step 502, the initial testing node in input system figure, due in compartment system there may be multiple combining points,
When initial testing node is not unique, can take one it is untreated as current initial testing node, enter step 503；
Step 503, the feed line length and link attenuation for calculating each node to current initial testing node, enter step
504；
Step 504, in the fault location mode standing-wave of current initial testing node location test compartment system than data,
Enter step 505；
Step 505, test gained standing-wave ratio data are compared with threshold value Q1, are greater than the sampled point of Q1 if it exists, then
Enter step 507；
It is greater than the sampled point of Q1 if it does not exist, then the judging result of the initial testing node is fault-free, is entered step
506；
Step 506, judge whether that the test job of all initial testing nodes is completed, if being completed, terminate
This process；If no, being taken from step 503 next untreated as current initial testing node, start again at next
Initial testing node respective compartments subsystem fault location；
Step 507, the feed line length L and standing-wave ratio V that all standing-wave ratios are more than the sampled point of threshold value Q1 are recorded, into step
Rapid 508；
Step 508, current sampling point is taken to be matched with system diagram one by one from each sampled point that step 507 records, into
Enter step 509；
Step 509, if current sampling point and the matched node of system diagram are unique, 510 are entered step；If the sampled point with
The matched node of system diagram is not unique, then enters step 514；
Step 510, if current sampling point and the matched unique node of system diagram are denoted as a, returning for institute matched node a is calculated
RL is lost in wave, and the practical standing-wave ratio Vt of calculate node, the standing wave threshold value Q2 of calculate node enter step 511；
Step 511, if node a meets RL≤2PL or Vt > Q2, which is fault point, enters step 512；If
It is unsatisfactory for above-mentioned condition, then enters step 513；
Step 512, after the completion of the failure for handling node a at the scene, 513 are entered step；
Step 513, judge whether that all standing-wave ratios are more than that the sampled point of threshold value Q1 is processed completion, weighed if all completing
The standing-wave ratio data for newly testing current initial testing node, reenter step 504；If being handled next without all completing
A standing-wave ratio is more than that the sampled point of threshold value Q1 enters step 508 as new current sampling point；
Step 514, judge whether current sampling point and the matched interstitial content of system diagram are 2, if 2, then it enters step
515；If more than 2, then 518 are entered step；
Step 515, if current sampling point and matched 2 nodes of system diagram are denoted as a, b, the maximum for calculating two nodes is stayed
Bobbi Va, Vb, it is assumed herein that Va is greater than Vb, enters step 516 to describe convenient for subsequent step；
This step, which is realized, can be found in above, and calculation is as follows,
Wherein, if the link loss value of node a is PLa, the link loss value of node b is PLb；
Step 516, the standing wave test data of the sampled point be V, if meeting Vb < V < Va, synchronize enter step 517 and
Step 510, wherein the return loss RL of step 510 calculate node a, the practical standing-wave ratio Vt of calculate node a, calculate node a's
Standing wave threshold Q2, step 513 place all judge waiting step 517 and step 510 respective handling again after the completion；If no
Meet Vb < V < Va, then enters step 518；
Step 517, on-the-spot test node b is then handled if fault point, is entered step 513 after the completion, be otherwise directly entered
Step 513；
Step 518, according to the matched multiple nodes of sampled point, recalled, as untreated initial testing node, into
Enter step 503, realization confirms each node one by one.
For example, it is assumed that tri- points of a/b/c are equidistant to start node, it cannot judge which node is problematic, exist at this time
First common node (or 2, depending on the circumstances) that tri- points of a/b/c are reversely found on system diagram, distinguishes again
Test the standing-wave ratio of different branch, positioning failure.
When it is implemented, method provided by the present invention can realize automatic running process based on software technology, list can also be used
Firstization mode realizes corresponding system.
The present invention also provides a kind of standing wave fault location systems for wirelessly communicating indoor distributed system, including with lower unit:
Unit 501, inputs the system diagram and plan view of indoor distributed system, and order unit 502 works；
Unit 502, input initial testing node, take one as current initial testing node, 503 work of order unit
Make；
Unit 503 calculates the feed line length and link attenuation of each node to current initial testing node, order unit
504 work；
Unit 504, current initial testing node location test compartment system fault location mode standing-wave than data,
Order unit 505 works；
Test gained standing-wave ratio data are compared with preset threshold value Q1, are greater than the sampling of Q1 if it exists by unit 505
Point, then order unit 507 works；
It is greater than the sampled point of Q1 if it does not exist, order unit 506 works；
Unit 506 judges whether that the test job of all initial testing nodes is completed, if being completed, terminates
This process；If no, removing an initial testing node as current initial testing node from unit 503, respective compartments are carried out
Subsystem fault location；
Unit 507, records feed line length L and standing-wave ratio V that all standing-wave ratios are more than the sampled point of threshold value Q1, and order is single
Member 508 works；
Unit 508, each sampled point recorded from unit 507 take current sampling point to be matched with system diagram, order one by one
Unit 509 works；
Unit 509, if current sampling point and the matched node of system diagram are unique, order unit 510 works；If the sampling
Point is not unique with the matched node of system diagram, then order unit 514 works；
Unit 510 calculates returning for institute matched node a if current sampling point and the matched unique node of system diagram are denoted as a
RL, the practical standing-wave ratio Vt of calculate node, the standing wave threshold value Q2 of calculate node is lost in wave, and order unit 511 works；
Unit 511, if current node a meets RL≤2PL or Vt > Q2, which is fault point, order unit 512
Work；If being unsatisfactory for above-mentioned condition, order unit 513 works；
Unit 512, at the scene after the completion of the failure of processing node a, order unit 513 works；
Unit 513 judges whether that all standing-wave ratios are more than that the sampled point of threshold value Q1 is processed completion, weighs if all completing
The standing-wave ratio data of current initial testing node are newly tested, order unit 504 works again；If all not completing, under processing
One standing-wave ratio is more than the sampled point of threshold value Q1, and as new current sampling point, order unit 508 works；
Unit 514 judges whether current sampling point and the matched interstitial content of system diagram are 2, if then order unit 515
Work, otherwise order unit 518 works；
Unit 515, if current sampling point and matched 2 nodes of system diagram are denoted as a, b, if the maximum standing-wave ratio of node a
Va is greater than the maximum standing-wave ratio Vb of node b, and order unit 516 works；
Unit 516, if sampled point test gained standing-wave ratio is V, if meeting Vb < V < Va, synch command unit 517
Work and unit 510 work, and otherwise order unit 518 works；
Unit 517, on-the-spot test node b are then handled if fault point, are completed post command unit 513 and are worked；
Unit 518 is recalled according to the matched multiple nodes of sampled point, as untreated initial testing node, life
Unit 503 is enabled to work.
Each unit specific implementation can be found in corresponding steps, and it will not go into details by the present invention.
When it is implemented, module can also be divided by function, related device is provided.For the sake of implementation reference, provide
The realization proposed projects of device are as follows:
Standing wave test module: it realizes the standing-wave ratio test of the fault location mode of compartment system, acquires and save test number
According to；
Scheme parsing module: for the parsing of the scheme to indoor distributed system, initial testing node is set, each section is calculated
Point carries out with plan view system diagram corresponding to the feed line length and link load of initial testing node；
Fault location module: standing-wave ratio test data is matched with system diagram, is screened suspected fault point, will be tested number
Suspect node is restored according to according to system diagram, and calculates judgement thresholding, confirms the specific location of fault point；In test sample
When the corresponding interstitial content of point is more, next step test node position is provided；Judge automatically and provide the processing step of next step
And suggest.
Each module specific implementation is consistent with method, and it will not go into details by the present invention.
Referring to fig. 4, the test and fault location of standing wave test module, scheme parsing module, fault location module are integrated with
Device, also settable related peripherals:
Touch display screen provides human-computer interaction interface, function selection, confirmation, I/O Interface is provided, to show behaviour
It prompts, measurement result, power information, warning information etc..
Radio frequency interface is mainly used for the calibration of standing wave test module, the access test of compartment system.
USB interface provides the copy and transfer function of data, for the importing of system diagram and plan view, analyzes result and report
The export etc. of announcement.
Operation button area mainly provide function key, directionkeys, number key, acknowledgement key, power switch key, screen on-off key,
Reset key etc. realizes the human-computer interaction functions such as function selection, numeral input.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (6)
1. a kind of standing wave Fault Locating Method for wirelessly communicating indoor distributed system, which comprises the following steps:
Step 501, the system diagram and plan view for inputting indoor distributed system, enter step 502；
Step 502, initial testing node is inputted, one is taken as current initial testing node, enters step 503；
Step 503, the feed line length and link attenuation for calculating each node to current initial testing node, enter step 504；
Step 504, enter in the fault location mode standing-wave of current initial testing node location test compartment system than data
Step 505；
Step 505, test gained standing-wave ratio data are compared with preset threshold value Q1, are greater than the sampled point of Q1 if it exists,
Then enter step 507；
It is greater than the sampled point of Q1 if it does not exist, enters step 506；
Step 506, judge whether that the test job of all initial testing nodes is completed, if being completed, terminate this stream
Journey；
If no, removing an initial testing node as current initial testing node from step 503, carrying out respective compartments point is
System fault location；
Step 507, the feed line length L and standing-wave ratio V1 that all standing-wave ratios are more than the sampled point of threshold value Q1 are recorded, is entered step
508；
Step 508, it takes current sampling point to be matched with system diagram one by one from each sampled point that step 507 records, enters step
509；
Step 509, if current sampling point and the matched node of system diagram are unique, 510 are entered step；If the sampled point and system
It is not unique to scheme matched node, then enters step 514；
Step 510, if current sampling point and the matched unique node of system diagram are denoted as a, the echo damage of institute matched node a is calculated
RL is consumed, the practical standing-wave ratio Vt of calculate node, the standing wave threshold value Q2 of calculate node enter step 511；
Step 511, if current node a meets RL≤2PL or Vt > Q2, which is fault point, enters step 512；If
It is unsatisfactory for above-mentioned condition, then enters step 513；Wherein, PL is known suspected fault point link load；
Step 512, after the completion of the failure for handling node a at the scene, 513 are entered step；
Step 513, judge whether that all standing-wave ratios are more than that the sampled point of threshold value Q1 is processed completion, surveyed again if all completing
The standing-wave ratio data for trying current initial testing node, reenter step 504；If all not completing, next standing wave is handled
Sampled point than being more than threshold value Q1 enters step 508 as new current sampling point；
Step 514, judge whether current sampling point and the matched interstitial content of system diagram are 2, it is no if then entering step 515
Then enter step 518；
Step 515, if current sampling point and matched 2 nodes of system diagram are denoted as a, b, if the maximum standing-wave ratio Va of node a is big
In the maximum standing-wave ratio Vb of node b, 516 are entered step；
Step 516, if the sampled point test gained standing-wave ratio be V2, if meeting Vb < V2 < Va, synchronize enter step 517 and
Step 510, wherein the return loss RL of step 510 calculate node a, the practical standing-wave ratio Vt of calculate node a, calculate node a's
Standing wave threshold Q2, otherwise enters step 518；
Step 517, on-the-spot test node b then handles if fault point, enters step 513 after the completion；
Step 518, according to the matched multiple nodes of sampled point, recalled, as untreated initial testing node, into step
Rapid 503.
2. wirelessly communicating the standing wave Fault Locating Method of indoor distributed system according to claim 1, it is characterised in that: step
In 510, the return loss RL, the practical standing-wave ratio Vt of calculate node, the standing wave threshold value Q2 of calculate node of institute matched node a are calculated
When, implementation is as follows,
If a certain sampled point filtered out, standing-wave ratio V3,
Wherein, PL is the link load with the matched node of sampled point to initial testing node, and PLM is input port to output end
The maximum Insertion Loss of mouth.
3. the standing wave Fault Locating Method of wireless communication indoor distributed system according to claim 1 or claim 2, it is characterised in that:
In step 515, when the maximum standing-wave ratio Vb of the maximum standing-wave ratio Va and node b of calculate node a, implementation is as follows,
Wherein, if the link loss value of node a is PLa, the link loss value of node b is PLb.
4. a kind of standing wave fault location system for wirelessly communicating indoor distributed system, which is characterized in that including with lower unit:
Unit 501, inputs the system diagram and plan view of indoor distributed system, and order unit 502 works；
Unit 502 inputs initial testing node, takes one as current initial testing node, order unit 503 works；
Unit 503 calculates the feed line length and link attenuation of each node to current initial testing node, order unit 504
Work；
Unit 504 tests the fault location mode standing-wave of compartment system than data, order in current initial testing node location
Unit 505 works；
Test gained standing-wave ratio data are compared with preset threshold value Q1, are greater than the sampled point of Q1 if it exists by unit 505,
Then order unit 507 works；
It is greater than the sampled point of Q1 if it does not exist, order unit 506 works；
Unit 506 judges whether that the test job of all initial testing nodes is completed, if being completed, terminates this stream
Journey；
If no, removing an initial testing node as current initial testing node from unit 503, carrying out respective compartments point is
System fault location；
Unit 507 records feed line length L and standing-wave ratio V1 that all standing-wave ratios are more than the sampled point of threshold value Q1, order unit
508 work；
Unit 508, each sampled point recorded from unit 507 take current sampling point to be matched with system diagram one by one, order unit
509 work；
Unit 509, if current sampling point and the matched node of system diagram are unique, order unit 510 works；If the sampled point with
The matched node of system diagram is not unique, then order unit 514 works；
Unit 510 calculates the echo damage of institute matched node a if current sampling point and the matched unique node of system diagram are denoted as a
RL, the practical standing-wave ratio Vt of calculate node, the standing wave threshold value Q2 of calculate node are consumed, order unit 511 works；
Unit 511, if current node a meets RL≤2PL or Vt > Q2, which is fault point, 512 work of order unit
Make；
If being unsatisfactory for above-mentioned condition, order unit 513 works；Wherein, PL is known suspected fault point link load；
Unit 512, at the scene after the completion of the failure of processing node a, order unit 513 works；
Unit 513 judges whether that all standing-wave ratios are more than that the sampled point of threshold value Q1 is processed completion, surveys again if all completing
The standing-wave ratio data of current initial testing node are tried, order unit 504 works again；If all not completing, handle next
Standing-wave ratio is more than the sampled point of threshold value Q1, and as new current sampling point, order unit 508 works；
Unit 514 judges whether current sampling point and the matched interstitial content of system diagram are 2, if then 515 work of order unit
Make, otherwise order unit 518 works；
Unit 515, if current sampling point and matched 2 nodes of system diagram are denoted as a, b, if the maximum standing-wave ratio Va of node a is big
In the maximum standing-wave ratio Vb of node b, order unit 516 works；
Unit 516, if sampled point test gained standing-wave ratio is V2, if meeting Vb < V2 < Va, 517 work of synch command unit
Make and unit 510 works, wherein the return loss RL of 510 calculate node a of unit, the practical standing-wave ratio Vt of calculate node a, calculate
The standing wave threshold Q2 of node a, otherwise order unit 518 works；
Unit 517, on-the-spot test node b are then handled if fault point, are completed post command unit 513 and are worked；
Unit 518 is recalled according to the matched multiple nodes of sampled point, and as untreated initial testing node, order is single
Member 503 works.
5. wirelessly communicating the standing wave fault location system of indoor distributed system according to claim 4, it is characterised in that: unit
In 510, the return loss RL, the practical standing-wave ratio Vt of calculate node, the standing wave threshold value Q2 of calculate node of institute matched node a are calculated
When, implementation is as follows,
If a certain sampled point filtered out, standing-wave ratio V3,
Wherein, PL is the link load with the matched node of sampled point to initial testing node, and PLM is input port to output end
The maximum Insertion Loss of mouth.
6. the standing wave fault location system of wireless communication indoor distributed system according to claim 4 or 5, it is characterised in that:
In unit 515, when the maximum standing-wave ratio Vb of the maximum standing-wave ratio Va and node b of calculate node a, implementation is as follows,
Wherein, if the link loss value of node a is PLa, the link loss value of node b is PLb.
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| CN110275092B (en) * | 2019-07-18 | 2021-05-11 | 上海创远仪器技术股份有限公司 | Method for realizing fault positioning processing based on technology for overcoming cable characteristic overcompensation |
| CN114827926B (en) * | 2022-06-28 | 2022-09-23 | 中家院（北京）检测认证有限公司 | Optimization method and system of path loss and method for measuring signal intensity |
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| CN102438255A (en) * | 2011-12-30 | 2012-05-02 | 三维通信股份有限公司 | Monitoring system for indoor distribution of mobile communication and realizing method |
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