CN207380172U - A kind of dual redundant equipotential cable net swinging cross test device - Google Patents
A kind of dual redundant equipotential cable net swinging cross test device Download PDFInfo
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- CN207380172U CN207380172U CN201720935888.7U CN201720935888U CN207380172U CN 207380172 U CN207380172 U CN 207380172U CN 201720935888 U CN201720935888 U CN 201720935888U CN 207380172 U CN207380172 U CN 207380172U
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Abstract
The utility model is related to a kind of dual redundant equipotential cable net swinging cross test devices, current source is accessed between two access points of short circuit cross-line, the both ends in any two points connecting test source are selected in all the points on cable that short circuit cross-line passes through, test source tests the electric current of point-to-point transmission, whether the current direction of judgement is consistent with preset direction, if consistent, show that swinging cross does not occur for the point-to-point transmission of test source connection, show 2 points of generation swinging cross of test source connection if inconsistent.When the electric current of acquisition is 0, show that break at 2 points of test source connection.Generation swinging cross is judged whether using current direction in the utility model, it need not judge concrete numerical value, processing mode is simple, effectively overcomes the error problem in traditional four-line measurement swinging cross method, the swinging cross problem in being designed with accurate judgement space flight cable system redundant circuit.
Description
Technical field
The utility model relates to a kind of dual redundant equipotential cable net swinging cross test device, belongs to wireline test field.
Background technology
The redundancy backups technological means such as two point, two-wire is employed in the partial cables net design of space product.But due to boat
Its cable system customizes degree height, batch production can not be formed, also mainly with traditional-handwork in terms of the production and processing of space flight cable system
Based on operation, this just can not fundamentally prevent the generation of product quality problems.But with space flight cable system detection technique into
Step carries out the space flight cable system after processing access, insulation and the detections such as pressure-resistant by the advanced test equipment such as cable tester
Some such as wrong weldering, generations of solder skip, rosin joint low level quality problems are effectively prevented, but for cable system medium potential point
Swinging cross problem, above-mentioned detection means can not be detected effectively, so as to cause the generation of several swinging cross quality problems, be seriously affected
The implementation of product quality and launch mission, therefore the method for studying effectively detection isopotential point swinging cross problem seems particularly heavy
It will.
Although current cable tester all possesses the function of four-wire measurement resistance, carried out on the basis of existing tester
The test of swinging cross problem can be realized in exploitation, but is had the following problems in engineer application：
(1) four-wire method test equipment is used, it is desirable to provide double test point, test equipment testing efficiency are low；
(2) test result accuracy is not high, the error in length of transit cable, contact resistance and link resistance between connector
Magnitude is suitable, it is understood that there may be erroneous judgement situation；
(3) same figure number cable system different batches test value is different, it is impossible to form effective reference standard；
(4) four-wire measurement of real meaning is realized, the difficulty of processing of transit cable is very big.
Therefore four-wire method detection swinging cross problem only exists theoretic possibility, in Practical Project is put into practice and is operated
It is difficult to realize, even if realizing that the confidence level of measurement result is not high.How a kind of easily test device is provided, realizes dual redundant etc.
The swinging cross test of current potential cable system, is the technical issues of this field is urgently to be resolved hurrily.
Utility model content
The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art, provide a kind of dual redundant equipotential cable net
Swinging cross test device realizes the accurate detection to cable system swinging cross, improves cable system product quality, evades the wind artificially to malfunction
Danger.
The above-mentioned purpose of the utility model is achieved by following technical solution：
A kind of dual redundant equipotential cable net swinging cross tester is provided, including main control module, channel switching module, switching model
Block；
Channel switching module is designed by switch arrays and realized, under the control of main control module, driving source is connected short circuit
Between two access points of cross-line, by test source be selectively accessing short circuit cross-line process cable on any two points；
Interconnecting module includes transit cable, for the test point of cable under test to be connected to tester；
The main control module includes driving source, test source and PCI Control cards, and driving source uses current source, provides constant
Electric current；Test source uses testing current module, detects the electric current between any two points on cross-line branch, and is sent to PCI controls
Board；The electric current that PCI Control card collecting tests source is sent judges whether that swinging cross, the current direction of acquisition and default side occurs
To consistent, then swinging cross does not occur for the point-to-point transmission for judging to show test source connection；The current direction of acquisition differs with preset direction
It causes, then judges 2 points of generation swinging cross of test source connection, export 2 points of corresponding numbers of swinging cross prompting and swinging cross.
Preferably, the electric current that PCI Control cards collecting test source is sent, judges whether to break, if the electricity of acquisition
It flows for 0, shows that break at 2 points of test source connection, the prompting of output broken string and the 2 points of corresponding numbers to break.
Preferably, testing current module provides the constant current of 2-10mA.
Preferably, human-computer interaction module is further included, for inputting the electric current preset direction between any two points.
The advantageous effect of the utility model compared with prior art is：
(1) the swinging cross test device of the dual redundant equipotential cable net in the utility model, using current direction judgement be
No generation swinging cross, without judging concrete numerical value, processing mode is simple, effectively overcomes in traditional four-line measurement swinging cross method
Error problem, the swinging cross problem in being designed with accurate judgement space flight cable system redundant circuit.
(2) the test traversal equipotential all the points of cable system of the utility model, test coverage is high, once swinging cross occurs
It being capable of accurate judgement swinging cross position.
(3) the utility model while swinging cross is judged can be whether there is by electric current and judge whether to break simultaneously, be kept away
Exempt from multiple test, improve testing efficiency.
Description of the drawings
Fig. 1 tests the block diagram of system for the utility model.
Is wireline test schematic diagram in the case of swinging cross does not occur for Fig. 2 (a), and cable is surveyed in the case that swinging cross occurs for Fig. 2 (b)
Try schematic diagram.
Is wireline test model equivalent circuit diagram in the case of swinging cross does not occur for Fig. 3 (a), and there is a situation where swinging cross by Fig. 3 (b)
Lower wireline test model equivalent circuit diagram.
Fig. 4 is the utility model transit cable schematic diagram.
Specific embodiment
With reference to Fig. 2, represented by space flight cable system design specification connector in circuit diagram with horizontal line, digitized representation connector
Point position, character is the connector trade mark on the left of horizontal line, and connecting line represents the connection relation between connector.Electricity in Fig. 2 in cable
One end of cable trunk has 3 plugs X1, X2, X3, is dual redundant equipotential design, and cross-line branch, cross-line are formed by cross-line
The 3rd point through plug X2 be connected to plug X1 the 36th point, the 3rd point of the 36th connection plug X3 of plug X1, through plug X3
The 3rd point connect the 4th point, the 37th point of the 4th connection plug X1 of plug X3, the 37th point of plug X1, the 4th of connection plug X2 the
Point.It is isopotential point due to each being put in space flight cable system Redundancy Design, using traditional resistance value, access etc. " scalar "
Test method is difficult to judge the generation of swinging cross problem, and four-wire method measurement measuring resistance in theory belongs to scalar measurement, but wherein draws
The auxiliary on this direction of measuring sequence is entered, therefore the measuring method of a kind of " vector " can be can be regarded as, based on above-mentioned " vector "
The considerations of measurement, the utility model is by the analysis to cable system redundancy structure, according to correct circuit connecting relation, if from
One Injection Current, the flow through direction and node sequence of electric current are unique and are that can prejudge, by electric current
Flow through the test of order and carry out comparison with the analysis of realization can be in decision circuitry whether with the presence of swinging cross problem.Utilize monitoring
The current direction in circuit in cable system Redundancy Design, so as to solve the problems, such as that cable system swinging cross measures.
Measuring device that the utility model uses as shown in Figure 1, cable system swinging cross tester mainly by main control module, passage
Handover module, interconnecting module, human-computer interaction module.
Channel switching module is designed by switch arrays and realized, under the control of PCI Control cards, selects connecing for driving source
The access point of access point and test source.
Interconnecting module is realized by the design of transit cable.Since the arbitrary point for being tested cable is likely to access constant current
Source or testing current module, and two sets of switching channels are independent mutually, therefore each point should accord with for the design of transit cable
Fig. 4 forms are closed, i.e., each point on plug is linked into the access point of driving source and connecing for test source by switch arrays respectively
Access point.
Main control module includes driving source, test source and PCI Control cards, and driving source uses testing current module, provides 2-
The electric current of 10mA is to cross-line branch；Test source is realized using testing current module, is detected on cross-line branch between any two points
Electric current, and it is sent to PCI Control cards.
Whether PCI Control cards are unanimously judged whether that swinging cross occurs and mixed by the current direction of acquisition with preset direction
The position of line.Preset direction is set according to the actual connection of cable, and referring to Fig. 2 (a), constant-current source is connected to cross-line
Both ends, circuit equivalent be link resistance RAWith testing current module resistance RBParallel connection, referring to Fig. 3 (a), 36 streams of the electric current through X1
To 37, preset direction flows to 37 for the 36 of electric current X1.In the case where swinging cross occurs, as shown in Fig. 2 (b) and 3 (b), if X2
3 and 4 swinging cross occur, then electric current 37 flows to 36 through X1, opposite with preset direction.The utility model can be also used for sentencing simultaneously
Whether disconnected to break, if not having electric current between the 36 and 37 of detection X1, illustrating cross-line, there are breakpoints.
Human-computer interaction module (5), mainly realizes human-computer interaction, realizes the reading and input of data, inputs between any two points
Electric current preset direction (being also less than 0 more than 0), output cable testing result.
The connection relation according to cable to be tested is first had to before test device is used to test, obtains all short circuit cross-lines
Access point determines two access points of i-th short circuit cross-line, obtains all the points on the cable that i-th short circuit cross-line passes through, institute
Quantity a little is n, and determines electric current preset direction between any two points according to the connection relation of cable under test, that is, determines electric current
0 should be also less than more than 0；Pass through the electric current preset direction between human-computer interaction circle module input test any two points.Connection electricity
Cable net swinging cross tester and tested cable.
Driving source is connected to two access points of i-th short circuit cross-line by PCI Control cards control switch arrays.Control is opened
It closes array and two points is selected from all the points on the cable that i-th short circuit cross-line passes through, by the two of two connecting test sources
End, test source test the electric current of point-to-point transmission, and are sent to PCI Control cards, PCI Control cards judge the current direction of acquisition with
Whether preset direction is consistent (to be preset the electric current of the point-to-point transmission and flows to B points for A points, is i.e. the electric current of A points to B points is more than 0, detects A
It puts to the electric current of B points, judges whether to be more than 0), if unanimously, showing that swinging cross does not occur for the point-to-point transmission of test source connection, if
It is inconsistent, show 2 points of generation swinging cross of test source connection, export 2 points of corresponding numbers of swinging cross prompting and swinging cross, lead to
Human-computer interaction module is crossed to show；The electric current of all point-to-point transmissions on i-th short circuit cross-line is tested, that is, completes this short circuit cross-line
Test.In sequence, all short circuit cross-lines are tested.
In one embodiment, the utility model can also judge whether cable breaks while swinging cross is judged,
If the electric current of point-to-point transmission is 0, show that break, and exports 2 points pairs of broken string prompting and broken string at 2 points of test source connection
The number answered, is shown by human-computer interaction module.
In the embodiment shown in Figure 2, the access point of short circuit cross-line is 3,4 points of X2.First test point selects X2 first
The 3rd point, the second test point selects the 36th point of X1 successively, the 3rd point of X3, the 4th point of plug X3, the 37th point of plug X1,
The 4th point of plug X2；Then the first test point is changed to the 36th point of X1, and the second test point selects the 3rd point of X3, plug successively
The 4th point of X3, the 37th point of plug X1, the 4th point of plug X2；First test point is changed to again, the second test at the 3rd point of X3
Point selects the 4th point, the 37th point of plug X1, the 4th point of plug X2 of plug X3 successively；The first test point is changed to X3's again
4th point, the second test point selects the 37th point of plug X1 successively, the 4th point of plug X2；The first test point is changed to X1's again
37th point, the second test point selects the 4th point of plug plug X2 successively；Complete the test of this short circuit cross-line.
The tester of the utility model is applied to the test of space flight cable, ensure that the comprehensive and accuracy of test.
The above, is only the optimal specific embodiment of utility model, but the scope of protection of the utility model not office
It is limited to this, in the technical scope that any one skilled in the art discloses in the utility model, can readily occurs in
Change or replacement should be covered within the scope of the utility model.
The content not being described in detail in the utility model specification belongs to the known technology of professional and technical personnel in the field.
Claims (4)
1. a kind of dual redundant equipotential cable net swinging cross test device, which is characterized in that including main control module, passage switching mould
Block, interconnecting module；
Channel switching module is designed by switch arrays and realized, under the control of main control module, driving source is connected short circuit cross-line
Two access points between, by test source be selectively accessing short circuit cross-line process cable on any two points；
Interconnecting module includes transit cable, for the test point of cable under test to be connected to tester；
The main control module includes driving source, test source and PCI Control cards, and driving source uses current source, provides constant current；
Test source uses testing current module, detects the electric current between any two points on cross-line branch, and is sent to PCI Control cards；
The electric current that PCI Control card collecting tests source is sent judges whether that swinging cross, current direction and the preset direction one of acquisition occurs
It causes, then swinging cross does not occur for the point-to-point transmission for judging to show test source connection；The current direction of acquisition and preset direction are inconsistent, then
Judge 2 points of generation swinging cross of test source connection, export 2 points of corresponding numbers of swinging cross prompting and swinging cross.
2. dual redundant equipotential cable net swinging cross test device as described in claim 1, which is characterized in that PCI Control cards
The electric current that collecting test source is sent, judges whether to break, if the electric current of acquisition is 0, shows 2 points of test source connection
Break, 2 points of corresponding numbers of the prompting of output broken string and broken string.
3. dual redundant equipotential cable net swinging cross test device as claimed in claim 1 or 2, which is characterized in that testing current
Module provides the constant current of 2-10mA.
4. dual redundant equipotential cable net swinging cross test device as claimed in claim 1 or 2, which is characterized in that further include people
Machine interactive module, for inputting the electric current preset direction between any two points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720935888.7U CN207380172U (en) | 2017-07-28 | 2017-07-28 | A kind of dual redundant equipotential cable net swinging cross test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720935888.7U CN207380172U (en) | 2017-07-28 | 2017-07-28 | A kind of dual redundant equipotential cable net swinging cross test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207380172U true CN207380172U (en) | 2018-05-18 |
Family
ID=62341645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720935888.7U Expired - Fee Related CN207380172U (en) | 2017-07-28 | 2017-07-28 | A kind of dual redundant equipotential cable net swinging cross test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207380172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271854A (en) * | 2017-07-28 | 2017-10-20 | 北京航天光华电子技术有限公司 | A kind of dual redundant equipotential cable net swinging cross test device and method of testing |
-
2017
- 2017-07-28 CN CN201720935888.7U patent/CN207380172U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271854A (en) * | 2017-07-28 | 2017-10-20 | 北京航天光华电子技术有限公司 | A kind of dual redundant equipotential cable net swinging cross test device and method of testing |
| CN107271854B (en) * | 2017-07-28 | 2023-08-29 | 北京航天光华电子技术有限公司 | Dual-redundancy equipotential cable network mixed wire testing device and testing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180518 Termination date: 20200728 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |