CN116449148A - Cable checking and positioning method for ultra-low orbit microsatellite high-density cable - Google Patents
Cable checking and positioning method for ultra-low orbit microsatellite high-density cable Download PDFInfo
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- CN116449148A CN116449148A CN202310307248.1A CN202310307248A CN116449148A CN 116449148 A CN116449148 A CN 116449148A CN 202310307248 A CN202310307248 A CN 202310307248A CN 116449148 A CN116449148 A CN 116449148A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 108091092878 Microsatellite Proteins 0.000 title claims description 10
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims abstract description 3
- 238000007689 inspection Methods 0.000 claims description 13
- 230000001066 destructive effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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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- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
A cable checking and positioning method for ultra-low orbit microminiature satellite high-density cable is characterized by comprising a resistor R, auxiliary cables L1, L2 and L3, a direct current power supply and a cable L to be checked in a cable W a A first closed loop circuit is formed; opening a direct current power supply, outputting a designated voltage, and enabling the first closed-loop circuit to generate current; finding out the cable with current in the cable W, namely the cable L a The method comprises the steps of carrying out a first treatment on the surface of the Through resistor R, auxiliary cables L1, L2 and L3, direct current power supply and cable L to be checked in cable W b A second closed loop circuit; opening a direct current power supply, outputting a designated voltage, and enabling the second closed loop circuit to generate current; finding out the cable with current in the cable W, namely the cable L b The method comprises the steps of carrying out a first treatment on the surface of the For found L a And L b And cutting off and cross welding the two cables to finish cable checking and positioning. The method is simple and easy to operate, short in implementation period, accurate and quick in positioning, does not need to perform destructive treatment on the whole cable, and reduces risks.
Description
Technical Field
The invention relates to a cable checking and positioning method for an ultra-low orbit microminiature satellite high-density cable, which is used for checking and positioning the cable when the high-density cable is processed.
Background
The ultra-low orbit microminiature satellite has relatively small volume, limited effective space in the satellite and high requirement on the volume of an electronic system in the satellite. To save space, electronic systems often employ high-functional density devices, high-density connectors, and the like to compress the space occupied.
The high-density connectors can reduce the number of connectors on the equipment to a certain extent, reduce the number of on-board cables, be favorable for reducing the weight of the system and reduce the occupied space of the equipment. The high density connectors have a higher cable density and typically do not have a logo attached to the cable to avoid creating excess material. After the cable is made, it is very difficult to find the cable corresponding to the specific pin of the connector. In order to ensure the reliability of the connection between the connector and the cable, the sealing and curing process is generally performed at the connection between the connector and the cable when the cable is manufactured, and even if the connector housing is removed, the corresponding relationship between the cable and the connector pins cannot be ensured to be seen clearly.
In the development process of the ultra-low orbit microminiature satellite, in order to further optimize the functions and performances of the satellite system, the possibility of replacing loads or other electronic equipment types, or adjusting and changing the internal connection relation of the existing electronic system exists, and related cables need to be found at the moment to be cut off or change the interconnection lines and other operations. For the reasons described above, it is difficult to realize the line inspection and positioning of the cable in the cable finished product, in general, the whole cable needs to be cut off, the connection relationship between all cables and connector pins is determined from the cut-off position, then the interconnection relationship is combed again at the cut-off position according to the optimization requirement, and then all the cables are crimped or welded, or insulation treatment is performed on individual cables. In many cases, the cables that require a change in connection may only make up a small portion of the overall cable. In order to cut the whole cable off for a small part of the cable, the prior work is huge waste, the reconnection needs to take a relatively long time, and meanwhile, the crimping or welding of the break points of the excessive cables are gathered in the limited space range of the cable, so that the risk of reliability is brought to the cable.
Disclosure of Invention
The technical solution of the invention is as follows: the cable checking and positioning method for the ultra-low orbit microminiature satellite high-density cable overcomes the defects of the prior art and performs cable checking and positioning by injecting current into a specific channel and measuring current change on the cable. The whole cable is not subjected to destructive operation, the operation is relatively simple and easy, and the positioning is quick.
The technical scheme of the invention is as follows:
a cable checking and positioning method for ultra-low orbit microminiature satellite high-density cables comprises the following steps:
through resistor R, auxiliary cables L1, L2 and L3, direct current power supply and cable L to be checked in cable W a A first closed loop circuit is formed;
opening a direct current power supply, outputting a designated voltage, and enabling the first closed-loop circuit to generate current;
finding out the cable with current in the cable W, namely the cable L a ；
Through resistor R, auxiliary cables L1, L2 and L3, direct current power supply and cable L to be checked in cable W b A second closed loop circuit;
opening a direct current power supply, outputting a designated voltage, and enabling the second closed loop circuit to generate current;
finding out the cable with current in the cable W, namely the cable L b ；
For found L a And L b And cutting off and cross welding the two cables to finish cable checking and positioning.
Further, the cable W includes a plurality of cables, and the cable L a And L b Two cables which need to be cut off and connected in a cross way; wherein, cable L a A corresponding to the connectors A at two ends of the cable n B of pin, plug-in element B m A pin; cable L b A corresponding to the connectors A at two ends of the cable h B of pin, connector B k Pins.
Further, the current resolution of the current clamp measurement is 1mA; the external direct current power supply provides 28V and 12V voltages; the resistance R is 500 omega or 1 Komega.
Further, the first closed loop circuit comprises the following steps:
(1-1) connecting the auxiliary cables L1, L2 to both ends of the resistor R;
(1-2) find out the pin a of the connectors A and B at two ends of the cable corresponding to the location of the wire to be searched n And b m ；
(1-3) connecting the other end of the auxiliary cable L2 to the output positive end of the DC power supply, and connecting the other end of the L1 with the pin a of the connector A n Are connected;
(1-4) connecting one end of the auxiliary cable L3 to the pin B of the connector B m The other end of the power supply is connected with the output ground of the direct current power supply;
(1-5) at this time, the cable L to be inspected is formed by L1, L2, L3, R a A first closed loop circuit is formed.
Further, the direct current power supply is turned on, and 12V voltage is output; at this time, the cables L to be checked are formed by L1, L2, L3, R a The first closed loop circuit is formed by: 12V/500 Ω=24 mA current.
Further, the cable W is found out to be the cable L a Searching by a bipartite method:
(3-1) dividing the cable roughly into two strands: w1, w2;
(3-2) measuring whether one of the w1 has current or not by means of a current clamp and an oscilloscope;
(3-3) if there is a current in w1, L a In w 1; if w1 is a single cable, then w1 is both L a Closing the direct current power supply; if w1 is not a single cable, turning to step (3-1);
(3-4) if there is no current in w1, L a Must be in w2; if w2 is a single cable, then w2 is both L a Closing the direct current power supply; if w2 is not a single cable, go to step (3-1).
Further, the second closed loop circuit comprises the following steps:
(4-3) finding the pin a of the connectors A and B at the two ends of the cable corresponding to the wire to be checked and positioned h And b k ；
(4-2) connecting the other end of the auxiliary cable L2 to the output positive end of the DC power supply, and connecting the other end of the L1 with the pin a of the connector A h Are connected;
(4-3) connecting one end of the auxiliary cable L3 to the pin B of the connector B k The other end of the power supply is connected with the output ground of the direct current power supply;
(4-4) at this time, the cable L to be inspected is formed by L1, L2, L3, R b A second closed loop circuit is formed.
Further, the direct current power supply is turned on, and 12V voltage is output; at this time, the cables L to be checked are formed by L1, L2, L3, R b The second closed loop circuit is formed by: 12V/500 Ω=24 mA current.
Further, the cable W is found out to be the cable L b Searching by a bipartite method:
(6-1) dividing the cable roughly into two strands: w3 and w4;
(6-2) measuring whether one of w2 has current or not through a current clamp and an oscilloscope;
(6-3) if there is current in w2, L b In w2; if w2 is a single cable, then w2 is both L b Closing the direct current power supply; if w2 is not a single cable, turning to step (6-1);
(6-4) if there is no current in w2, L b Must be in w4; if w4 is a single cable, then w4 is both L b Closing the direct current power supply; if w4 is not a single cable, go to step (6-1).
Compared with the prior art, the invention has the beneficial effects that:
(1) The method is simple and easy to operate, short in implementation period and accurate and quick in positioning;
(2) The method does not need to perform destructive processing on the whole cable, and reduces the risk in reliability to the greatest extent.
Drawings
FIG. 1 is a schematic diagram of a cable under investigation;
FIG. 2 is a schematic diagram of the test scheme of the present invention.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, it is assumed that two cables L that need to be cut and cross-connected need to be found in a cable W of 100 cables without identification a And L b . Wherein L is a A corresponding to the connectors A at two ends of the cable n B of B m ；L b A corresponding to the connectors A at two ends of the cable h B of B k 。
The required instrument equipment:
1) Current clamp and oscilloscope
2) DC power supply
3) Resistance 1, R
4) Auxiliary cables 3: l1, L2, L3
Assuming that the current resolution of the current clamp measurement is 1mA; the external direct current power supply can provide 28V, 12V and other voltages; the resistor with the resistance value of 500 omega or 1KΩ is taken. The power supply output voltage 12v,500 Ω resistance is exemplified.
The method mainly comprises the following steps:
(1) The auxiliary cables L1 and L2 are connected with two ends of the resistor R, as shown in figure 2;
(2) Finding pin a of connectors A and B at two ends of cable corresponding to wire to be searched for positioning n And b m ；
(3) The other end of the auxiliary cable L1 is connected with the output positive end of the direct current power supply, and the other end of the L2 and the pin a of the connector A n Are connected;
(4) One end of the auxiliary cable L3 is connected with pin B of the connector B m The other end of the power supply is connected with the output ground of the direct current power supply;
(5) Turning on a direct current power supply to output 12V voltage; at this time, the cables L to be checked are formed by L1, L2, L3, R a The closed loop circuit is formed by the following steps: 12V/500 Ω=24 mA current;
(6) The cable with current in the cable is found out through the current clamp and the oscilloscope, and the cable is L a The method comprises the steps of carrying out a first treatment on the surface of the Can be obtained by a similar bipartite methodIs to find:
(6-1) dividing the cable roughly into two strands: w1, w2;
(6-2) measuring whether one of the strands, e.g., w1, has current;
(6-3) if there is a current in w1, L a Must be in w 1; if w1 is a single cable, then w1 is both L a Turning to the step (7); if w1 is not a single cable, turning to step (6-1);
(6-4) if there is no current in w1, L a Must be in w2; if w2 is a single cable, then w2 is both L a Turning to the step (7); if w2 is not a single cable, turning to step (6-1);
(7) Closing a direct current power supply;
(8) Finding pin a of connectors A and B at two ends of cable corresponding to wire to be searched for positioning h And b k ；
(9) The other end of the auxiliary cable L1 is connected with the output positive end of the direct current power supply, and the other end of the L2 and the pin a of the connector A h Are connected;
(10) One end of the auxiliary cable L3 is connected with pin B of the connector B k The other end of the power supply is connected with the output ground of the direct current power supply;
(11) Turning on a direct current power supply to output 12V voltage; at this time, the cables L to be checked are formed by L1, L2, L3, R b The closed loop circuit is formed by the following steps: 12V/500 Ω=24 mA current;
(12) The cable with current in the cable is found out through the current clamp and the oscilloscope, and the cable is L b The method comprises the steps of carrying out a first treatment on the surface of the The search can be performed in a similar way to the bipartite method:
(12-1) dividing the cable roughly into two strands: w1, w2;
(12-2) measuring whether one of the strands, e.g., w1, has current;
(12-3) if there is a current in w1, L a Must be in w 1; if w1 is a single cable, then w1 is both L a Turning to step (13); if w1 is not a single cable, turning to step (12-1);
(12-4) if there is no current in w1, L a Must be in w2; if w2 is a single cable, then w2 is both L a Turning to step (13);if w2 is not a single cable, turning to step (12-1);
(13) For found L a And L b The two cables are cut off and cross welded.
Examples:
the connectors A and B of two 100 pins at two ends of the cable are J30J-100TJL.
Two cables L to be cut and cross-connected are to be found in a 100-cable-less cable W a And L b . Wherein L is a 40 corresponding to 20 and B of connectors at two ends of the cable; l (L) b Corresponding to 44 of connectors a 24, B at both ends of the cable. Find L a And L b After that, the connection relationship is changed into: l (L) a Connected to 44 of connectors A, 20, B, L b Is connected to the connectors 24, 40 of the connector B.
The required instrument equipment:
1) Current clamp and oscilloscope
2) DC power supply
3) Resistance 1, R
4) Auxiliary cables 3: l1, L2, L3
The current resolution of the current clamp is 1mA; the external direct current power supply outputs 12V voltage; and taking a resistor with the resistance value of 500 omega.
The method mainly comprises the following steps:
(1) Connecting the auxiliary cables L1 and L2 with two ends of a resistor R;
(2) Finding a pin 20 of the A and a pin 40 of the B, which correspond to the wire to be checked and positioned, of the two-end connector of the cable;
(3) The other end of the auxiliary cable L1 is connected with the output positive end of the direct current power supply, and the other end of the L2 is connected with the pin 20 of the connector A;
(4) One end of the auxiliary cable L3 is connected with the pin 40 of the connector B, and the other end of the auxiliary cable L3 is connected with the output ground of the direct current power supply;
(5) Turning on a direct current power supply to output 12V voltage; at this time, the cables L to be checked are formed by L1, L2, L3, R a The closed loop circuit is formed by the following steps: 12V/500 Ω=24 mA current;
(6) Finding out the electrification in the cable through the current clamp and the oscilloscopeA cable of the flow, this cable is L a ；
(7) Turning off DC power supply
(8) Finding the pin 24 of the A and the pin 44 of the B of the cable two-end connector corresponding to the line to be checked and positioned;
(9) The other end of the auxiliary cable L1 is connected to the output positive end of the direct current power supply, and the other end of the L2 is connected with the pin 24 of the connector A;
(10) One end of the cable L3 is connected with the pin 44 of the connector B, and the other end is connected with the output ground of the direct current power supply;
(11) Turning on a direct current power supply to output 12V voltage; at this time, the cables L to be checked are formed by L1, L2, L3, R b The closed loop circuit is formed by the following steps: 12V/500 Ω=24 mA current;
(12) The cable with current in the cable is found out through the current clamp and the oscilloscope, and the cable is L b
For found L a And L b Two cables are cut off, cross welding operation is carried out, and realization is achieved: l (L) a Connected to 44 of connectors A, 20, B, L b Is connected to the connectors 24, 40 of the connector B.
The method is simple and easy to operate, short in implementation period and accurate and quick in positioning; meanwhile, the method does not need to perform destructive processing on the whole cable, and reduces the risk in reliability to the greatest extent.
The invention is not described in detail in the field of technical personnel common knowledge.
Claims (9)
1. A cable checking and positioning method for ultra-low orbit microminiature satellite high-density cables, the method is characterized by comprising the following steps:
through resistor R, auxiliary cables L1, L2 and L3, direct current power supply and cable L to be checked in cable W a A first closed loop circuit is formed;
opening a direct current power supply, outputting a designated voltage, and enabling the first closed-loop circuit to generate current;
finding out the cable with current in the cable W, namely the cable L a ；
Through resistor R, auxiliary cables L1, L2 and L3, direct current power supply and cable L to be checked in cable W b A second closed loop circuit;
opening a direct current power supply, outputting a designated voltage, and enabling the second closed loop circuit to generate current;
finding out the cable with current in the cable W, namely the cable L b ；
For found L a And L b And cutting off and cross welding the two cables to finish cable checking and positioning.
2. The cable inspection positioning method for ultra-low orbit micro-satellite high-density cables according to claim 1, wherein the cable inspection positioning method is characterized by comprising the following steps: the cable W comprises a plurality of cables L a And L b Two cables which need to be cut off and connected in a cross way; wherein, cable L a A corresponding to the connectors A at two ends of the cable n B of pin, plug-in element B m A pin; cable L b A corresponding to the connectors A at two ends of the cable h B of pin, connector B k Pins.
3. The cable inspection positioning method for ultra-low orbit micro-satellite high-density cables according to claim 1, wherein the cable inspection positioning method is characterized by comprising the following steps: the current resolution of the current clamp is 1mA; the external direct current power supply provides 28V and 12V voltages; the resistance R is 500 omega or 1 Komega.
4. The cable checking and positioning method for ultra-low orbit micro-satellite high-density cables according to claim 2, wherein the method is characterized in that: the first closed loop circuit is formed by the following steps:
(1-1) connecting the auxiliary cables L1, L2 to both ends of the resistor R;
(1-2) find out the pin a of the connectors A and B at two ends of the cable corresponding to the location of the wire to be searched n And b m ；
(1-3) connecting the other end of the auxiliary cable L2 to the output positive end of the DC power supply, and connecting the other end of the L1 with the pin a of the connector A n Are connected;
(1-4) connecting one end of the auxiliary cable L3 to the pin B of the connector B m The other end of the power supply is connected with the output ground of the direct current power supply;
(1-5) at this time, the cable L to be inspected is formed by L1, L2, L3, R a A first closed loop circuit is formed.
5. The cable inspection positioning method for ultra-low orbit micro-satellite high-density cables according to claim 4, wherein the cable inspection positioning method is characterized by comprising the following steps: turning on a direct current power supply to output 12V voltage; at this time, the cables L to be checked are formed by L1, L2, L3, R a The first closed loop circuit is formed by: 12V/500 Ω=24 mA current.
6. The cable inspection positioning method for ultra-low orbit micro-satellite high-density cables according to claim 4, wherein the cable inspection positioning method is characterized by comprising the following steps: the cable W is searched for a cable with current, namely a cable L a Searching by a bipartite method:
(3-1) dividing the cable roughly into two strands: w1, w2;
(3-2) measuring whether one of the w1 has current or not by means of a current clamp and an oscilloscope;
(3-3) if there is a current in w1, L a In w 1; if w1 is a single cable, then w1 is both L a Closing the direct current power supply; if w1 is not a single cable, turning to step (3-1);
(3-4) if there is no current in w1, L a Must be in w2; if w2 is a single cable, then w2 is both L a Closing the direct current power supply; if w2 is not a single cable, go to step (3-1).
7. The cable checking and positioning method for ultra-low orbit micro-satellite high-density cables according to claim 2, wherein the method is characterized in that: the second closed loop circuit comprises the following components:
(4-2) finding out the pin a of the connectors A and B at the two ends of the cable, which corresponds to the position of the wire to be searched h And b k ；
(4-2) connecting the other end of the auxiliary Cable L2 to the straight lineThe output positive end of the current source, the other end of the L1 and the pin a of the connector A h Are connected;
(4-3) connecting one end of the auxiliary cable L3 to the pin B of the connector B k The other end of the power supply is connected with the output ground of the direct current power supply;
(4-4) at this time, the cable L to be inspected is formed by L1, L2, L3, R b A second closed loop circuit is formed.
8. The cable inspection positioning method for ultra-low orbit micro-satellite high-density cables according to claim 7, wherein the cable inspection positioning method is characterized by comprising the following steps: turning on a direct current power supply to output 12V voltage; at this time, the cables L to be checked are formed by L1, L2, L3, R b The second closed loop circuit is formed by: 12V/500 Ω=24 mA current.
9. The cable inspection positioning method for ultra-low orbit micro-satellite high-density cables according to claim 7, wherein the cable inspection positioning method is characterized by comprising the following steps: the cable W is searched for a cable with current, namely a cable L b Searching by a bipartite method:
(6-1) dividing the cable roughly into two strands: w3 and w4;
(6-2) measuring whether one of w2 has current or not through a current clamp and an oscilloscope;
(6-3) if there is current in w2, L b In w2; if w2 is a single cable, then w2 is both L b Closing the direct current power supply; if w2 is not a single cable, turning to step (6-1);
(6-4) if there is no current in w2, L b Must be in w4; if w4 is a single cable, then w4 is both L b Closing the direct current power supply; if w4 is not a single cable, go to step (6-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310307248.1A CN116449148A (en) | 2023-03-27 | 2023-03-27 | Cable checking and positioning method for ultra-low orbit microsatellite high-density cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310307248.1A CN116449148A (en) | 2023-03-27 | 2023-03-27 | Cable checking and positioning method for ultra-low orbit microsatellite high-density cable |
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| Publication Number | Publication Date |
|---|---|
| CN116449148A true CN116449148A (en) | 2023-07-18 |
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|---|---|---|---|
| CN202310307248.1A Pending CN116449148A (en) | 2023-03-27 | 2023-03-27 | Cable checking and positioning method for ultra-low orbit microsatellite high-density cable |
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| Country | Link |
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| CN (1) | CN116449148A (en) |
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- 2023-03-27 CN CN202310307248.1A patent/CN116449148A/en active Pending
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