CN113835042A - Aviation cable automatic detection device and detection method for open circuit and short circuit thereof - Google Patents

Aviation cable automatic detection device and detection method for open circuit and short circuit thereof Download PDF

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Publication number
CN113835042A
CN113835042A CN202111121929.6A CN202111121929A CN113835042A CN 113835042 A CN113835042 A CN 113835042A CN 202111121929 A CN202111121929 A CN 202111121929A CN 113835042 A CN113835042 A CN 113835042A
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China
Prior art keywords
circuit
matrix circuit
relay matrix
relay
cable
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CN202111121929.6A
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Chinese (zh)
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杨庆
孙俊涛
唐海洋
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Jiangsu Lingyue Electronic Technology Co ltd
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Jiangsu Lingyue Electronic Technology Co ltd
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Priority to CN202111121929.6A priority Critical patent/CN113835042A/en
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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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • 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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/54—Testing for continuity
    • 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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

The invention relates to an aviation cable automatic detection device and a detection method for open circuit and short circuit thereof, which are characterized in that: the intelligent control system comprises a central processing unit circuit, a power supply, a first relay matrix circuit, a communication circuit, an alarm circuit, a resistance acquisition circuit and a second relay matrix circuit; the input end of the first relay matrix circuit is connected with the first end of the cable to be tested, and the input end of the second relay matrix circuit is connected with the second end of the cable to be tested; the output end of the first relay matrix circuit and the output end of the second relay matrix circuit are respectively connected with a resistance acquisition circuit; the power supply is connected with the power interface; the first relay matrix circuit, the second relay matrix circuit and the resistance acquisition circuit are respectively connected with each data interface; the communication circuit is connected with the communication interface; the alarm circuit is connected with the alarm interface. The problems that in the existing scheme, the equipment for testing the cable is only limited to a single test function, a plurality of kinds of equipment are required to be purchased to complete the test process, the investment cost is high, and the automation of the test cannot be realized are solved.

Description

Aviation cable automatic detection device and detection method for open circuit and short circuit thereof
Technical Field
The invention relates to the field of detection equipment, in particular to an aviation cable automatic detection device and a method for detecting open circuit and short circuit of the aviation cable automatic detection device.
Background
The aviation cable is complex in connection relation and large in connection scale. In the current state of the industry, the phenomenon that the aviation equipment cannot work normally due to the fault of the cable occurs occasionally, and the cable fault mainly includes the phenomenon that the cable is broken and different signals of the cable are mutually short-circuited. Cable manufacturers test cables before leaving factories, most of the cables are manually detected, aviation cables are complex in connection relation and large in connection scale, tests meeting military standards are time-consuming and labor-consuming, tests can be performed only in one step according to a flow, and the phenomena of few signal paths and missing tests frequently occur. The cable fault is found and the cable is returned to the factory for maintenance, so that the project schedule is delayed.
The equipment for testing the cable in the industry is limited to testing single functions, such as independently testing on-off and independently performing fatigue tests, for example, according to aviation cable test specifications, a plurality of kinds of equipment are required to be purchased to complete a test process, the input cost is high, the automation of the test cannot be realized, the requirement of modern industrial batch production is not met, and how to solve the problem becomes very important.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an aviation cable automatic detection device and a method for detecting open circuit and short circuit thereof, so as to solve the problems that the equipment for testing cables in the industry in the prior art is only limited to a single test function at present, a plurality of kinds of equipment are required to be purchased to complete a test flow, the input cost is high, and the automation of the test cannot be realized.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an automatic aviation cable detection device;
the intelligent control system comprises a central processing unit circuit, a power supply, a first relay matrix circuit, a communication circuit, an alarm circuit, a resistance acquisition circuit and a second relay matrix circuit; the central processor circuit comprises a communication interface, an alarm interface, a data interface and a power interface;
the input end of the first relay matrix circuit is connected with the first end of the cable to be tested, and the input end of the second relay matrix circuit is connected with the second end of the cable to be tested; the output end of the first relay matrix circuit and the output end of the second relay matrix circuit are respectively connected with the resistance acquisition circuit; the power supply is connected with the power supply interface; the first relay matrix circuit, the second relay matrix circuit and the resistance acquisition circuit are respectively connected with each data interface; the communication circuit is connected with the communication interface; the alarm circuit is connected with the alarm interface; the communication circuit is connected with an upper computer.
The further technical scheme is as follows: the test fixture comprises a first connector, a second connector, a first test fixture and a second test fixture; the first test tool is connected with the first end of the cable to be tested; the second test tool is connected with the second end of the cable to be tested; the first connector is respectively connected with the input end of the first relay matrix circuit and the first test tool; and the second connector is respectively connected with the input end of the second relay matrix circuit and the second test tool.
The further technical scheme is as follows: the first relay matrix circuit comprises a first relay control and drive circuit and at least one first single-pole double-throw relay; the fixed end of the first single-pole double-throw relay is connected with the resistance acquisition circuit; when the number of the first single-pole double-throw relays is multiple, the fixed ends of the first single-pole double-throw relays are connected with each other; the first relay control and drive circuit is connected with a control signal end of the first single-pole double-throw relay; and the first movable end of the first single-pole double-throw relay is connected with the first connector.
The further technical scheme is as follows: the second relay matrix circuit comprises a second relay control and drive circuit and at least one second single-pole double-throw relay; the fixed end of the second single-pole double-throw relay is connected with the resistance acquisition circuit; when the number of the second single-pole double-throw relays is multiple, the fixed ends of the second single-pole double-throw relays are connected with each other; the second relay control and drive circuit is connected with a control signal end of the second single-pole double-throw relay; and the first movable end of the second single-pole double-throw relay is connected with the second connector.
The further technical scheme is as follows: the first test tool is respectively provided with a third connector and a fourth connector; the third connector is connected with the first connector; the fourth connector is connected with the first end of the cable to be tested.
The further technical scheme is as follows: the second testing tool is respectively provided with a fifth connector and a sixth connector; the fifth connector is connected with the second connector; and the sixth connector is connected with the second end of the cable to be tested.
An open circuit detection method of an aviation cable automatic detection device;
when the aviation cable automatic detection device works, the open circuit detection method of the aviation cable automatic detection device comprises the following steps:
step a, preparing before testing; editing a configuration file, inputting a signal table of a cable to be tested, and inputting a corresponding relation between a pin at a first end of the cable to be tested and a pin at a second end of the cable to be tested;
step b, reading a configuration file; namely, the software reads a signal table of the cable to be tested;
step c, setting a channel m to be 1, and setting from a signal channel number of the first relay matrix circuit;
d, setting the state of the first relay matrix circuit, and conducting the first relay matrix circuit of the signal channel to be tested; the first relay matrix circuit is used for disconnecting other signal channels;
e, setting the state of the second relay matrix circuit, and searching the signal channel number of the second relay matrix circuit in the step d according to the configuration file read in the step b; the second relay matrix circuit is used for conducting a signal channel to be tested; the second relay matrix circuit is used for disconnecting other signal channels;
step f, collecting resistance data;
step g, storing test data;
step h, judging whether parallel signals exist, namely, one connector pin of the cable to be tested corresponds to a plurality of pins of the other end connector, switching and setting a second relay matrix circuit to a parallel signal channel if the parallel signals exist, and executing step e; if no parallel signal exists, executing the step i;
step i, judging whether the test is finished or not, if so, ending the test; if not, switching other test channels, setting the channel m as m +1, and repeating the steps d to i.
A short circuit detection method of an aviation cable automatic detection device;
when the aviation cable automatic detection device works, the short circuit detection method of the aviation cable automatic detection device comprises the following steps:
step a, preparing before testing; editing a configuration file, and inputting a signal table of the cable to be tested, namely the corresponding relation between a pin at the first end of the cable to be tested and a pin at the second end of the cable to be tested;
step b, reading a configuration file; namely, the software reads a signal table of the cable to be tested;
step c, setting a channel M, N; setting a signal channel number of a first relay matrix circuit; start test M ═ 1; setting a signal channel number of a second relay matrix circuit; start test N ═ 1;
d, scanning the signal channel number of the first relay matrix circuit, and conducting the first relay matrix circuit of the signal channel to be detected; the first relay matrix circuit is used for disconnecting other signal channels;
step e, judging whether the signal channel number of the second relay matrix circuit is in a normal connection relation; if yes, setting a signal channel number of a second relay matrix circuit; starting to test N is equal to N +1, and executing the step f; if not, executing the step f;
step f, scanning the signal channel number of the second relay matrix circuit, and conducting the second relay matrix circuit of the signal channel to be detected; the second relay matrix circuit is used for disconnecting other signal channels;
step g, collecting resistance data;
step h, storing test data;
step i, judging whether all signal channels of the second relay matrix circuit are finished or not; if yes, executing step j; if not, setting a signal channel number of the second relay matrix circuit; starting to test N-N +1, and executing the step e;
j, judging whether all signal channels of the first relay matrix circuit are finished or not; if yes, executing step k; if not, setting a signal channel number of the first relay matrix circuit; starting to test M +1, and executing step d;
step k, judging data; if the signal channel number of the first relay matrix circuit is mutually conducted with the signal channel number of the second relay matrix circuit, the short circuit is determined;
and step l, finishing the test.
Compared with the prior art, the invention has the following beneficial technical effects: (1) the open circuit and short circuit test of the cable to be tested is carried out by adopting a channel traversing mode, so that all channels of all the cables to be tested can be comprehensively tested; (2) the aviation cable automatic detection device provides a hardware foundation, and the automatic open circuit test and the automatic short circuit test are completed through the open circuit method and the short circuit method, so that manual intervention is not needed in the process, and the test accuracy and efficiency are greatly improved.
Drawings
Fig. 1 is a circuit connection diagram of an aviation cable automatic detection device according to an embodiment of the invention.
Fig. 2 is a circuit connection diagram of the cpu circuit according to the embodiment of the present invention.
Fig. 3 is a circuit connection diagram of a first relay matrix circuit according to an embodiment of the invention.
Fig. 4 is a circuit diagram of a second relay matrix circuit according to an embodiment of the invention.
Fig. 5 is a flowchart illustrating the open circuit detection of the automatic aviation cable detection apparatus according to an embodiment of the present invention.
Fig. 6 is a short circuit detection flowchart of the automatic aviation cable detection device according to the embodiment of the invention.
In the drawings, the reference numbers: 1. a central processing unit circuit; 11. a communication interface; 12. an alarm interface; 13. a data interface; 14. a power interface; 2. a power source; 3. a first relay matrix circuit; 31. a first relay control and drive circuit; 32. a first single-pole double-throw relay; 4. a communication circuit; 5. an alarm circuit; 6. a resistance acquisition circuit; 7. a second relay matrix circuit; 71. a second relay control and drive circuit; 72. a second single-pole double-throw relay; 81. a first connector; 82. a second connector; 91. a first test fixture; 92. and a second test fixture.
Detailed Description
Fig. 1 is a circuit connection diagram of an aviation cable automatic detection device according to an embodiment of the invention. Fig. 2 is a circuit connection diagram of the cpu circuit according to the embodiment of the present invention. Fig. 3 is a circuit connection diagram of a first relay matrix circuit according to an embodiment of the invention. Fig. 4 is a circuit diagram of a second relay matrix circuit according to an embodiment of the invention.
Fig. 5 is a flowchart illustrating the open circuit detection of the automatic aviation cable detection apparatus according to an embodiment of the present invention. Fig. 6 is a short circuit detection flowchart of the automatic aviation cable detection device according to the embodiment of the invention. Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the invention discloses an automatic aviation cable detection device.
The automatic aviation cable detection device comprises a central processing unit circuit 1, a power supply 2, a first relay matrix circuit 3, a communication circuit 4, an alarm circuit 5, a resistance acquisition circuit 6 and a second relay matrix circuit 7. The central processor circuit 1 comprises a communication interface 11, an alarm interface 12, a data interface 13 and a power interface 14.
The input end of the first relay matrix circuit 3 is connected with the first end of the cable to be tested, and the input end of the second relay matrix circuit 7 is connected with the second end of the cable to be tested. The output end of the first relay matrix circuit 3 and the output end of the second relay matrix circuit 7 are respectively connected with a resistance acquisition circuit 6. The power supply 2 is connected to the power supply interface 14. The first relay matrix circuit 3, the second relay matrix circuit 7 and the resistance acquisition circuit 6 are respectively connected with each data interface 13. The communication circuit 4 is connected to the communication interface 11. The alarm circuit 5 is connected with an alarm interface 12. The communication circuit 4 is connected with an upper computer.
Preferably, the central processor circuit 1 is a DSP processor of the type TI company F28 2837xD series.
The input end of the communication circuit 4 is connected with an upper computer. The output end of the communication circuit 4 is connected with the communication interface 11 of the central processing unit circuit 1. The output end of the alarm circuit 5 is connected with an alarm interface 12 of the central processor circuit 1. The power supply 2 is respectively connected with the power interface 14 of the central processor circuit 1, the power end of the first relay matrix circuit 3, the power end of the communication circuit 4, the power end of the alarm circuit 5 and the power end of the second relay matrix circuit 7.
The first relay matrix circuit 3, the second relay matrix circuit 7 and the resistance acquisition circuit 6 are respectively provided with a data transmission terminal. The data transmission end of the first relay matrix circuit 3 is connected with the corresponding data interface 13 of the central processor circuit 1. The data transmission end of the second relay matrix circuit 7 is connected with the corresponding data interface 13 of the central processor circuit 1. The data transmission end of the resistance acquisition circuit 6 is connected with the corresponding data interface 13 of the central processing unit circuit 1.
The automatic aviation cable detection device further comprises a first connector 81, a second connector 82, a first test tool 91 and a second test tool 92. The first testing tool 91 is connected with the first end of the cable to be tested. The second testing fixture 92 is connected to the second end of the cable to be tested. The first connector 81 is connected to the input terminal of the first relay matrix circuit 3 and the first test fixture 91, respectively. The second connector 82 is connected to the input terminal of the second relay matrix circuit 7 and the second test fixture 92, respectively.
The automatic aviation cable detection device further comprises a case. The central processor circuit 1, the power supply 2, the first relay matrix circuit 3, the communication circuit 4, the alarm circuit 5, the resistance acquisition circuit 6 and the second relay matrix circuit 7 are arranged in the case. The first connector 81 and the second connector 82 are mounted on the chassis.
The chassis adopts 3U and 63HP chassis of German Schroff company. Two side panels of the case are respectively provided with a stretchable handle, so that the portable requirement is met.
The first end of the cable to be tested and the second end of the cable to be tested are two ends of the cable to be tested respectively. The first connector 81 is connected to an input terminal of the first relay matrix circuit 3. The second connector 82 is connected to an input terminal of the second relay matrix circuit 7. The first testing tool 91 is connected to the first end of the cable to be tested. The second test fixture 92 is connected to the second end of the cable to be tested.
The data interface 13 of the central processor circuit 1 is connected to the output of the first relay matrix circuit 3 and the output of the second relay matrix circuit 7, respectively. The input end of the resistance acquisition circuit 6 is respectively connected with the resistance end of the first relay matrix circuit 3 and the resistance end of the second relay matrix circuit 7. The output end of the resistance acquisition circuit 6 is connected with the data interface 13 of the central processing unit circuit 1. The first relay matrix circuit 3 comprises a first relay control and drive circuit 31 and at least one first single pole double throw relay 32. The fixed end of the first single-pole double-throw relay 32 is connected with the resistance acquisition circuit 6. When the number of the first single-pole double-throw relays 32 is plural, the stationary ends of the plural first single-pole double-throw relays 32 are connected to each other. The first relay control and drive circuit 31 is connected to a control signal terminal of the first single-pole double-throw relay 32. The first moving terminal of the first single pole double throw relay 32 is connected to the first connector 81.
The first moving terminal pin of the first single pole double throw relay 32 is connected to the pin of the first connector 81 one-to-one. When the number of the first single-pole double-throw relays 32 is plural, the control signal terminal of each first single-pole double-throw relay 32 is individually connected to the first relay control and drive circuit 31. The fixed ends of the first single-pole double-throw relays 32 are connected to the resistance acquisition circuit 6 after being connected with each other. The first relay control and drive circuit 31 is connected to the cpu circuit 1.
The first single-pole double-throw relay 32 can be controlled by the central processing unit circuit 1 to select a signal channel entering the data acquisition circuit, thereby forming a hardware basis for detecting open circuit and short circuit.
The second relay matrix circuit 7 includes a second relay control and drive circuit 71 and at least one second single pole double throw relay 72. The fixed end of the second single-pole double-throw relay 72 is connected with the resistance acquisition circuit 6. When the number of the second single-pole double-throw relays 72 is plural, the stationary ends of the plural second single-pole double-throw relays 72 are connected to each other. The second relay control and drive circuit 71 is connected to a control signal terminal of the second single-pole double-throw relay 72. The first moving end of the second single pole double throw relay 72 is connected to the second connector 82.
The first moving terminal pin of the second single-pole double-throw relay 72 is connected to the pin of the second connector 82 one-to-one. When the number of the second single-pole double-throw relays 72 is plural, the control signal terminal of each second single-pole double-throw relay 72 is individually connected to the second relay control and drive circuit 71. The common terminals of the second single-pole double-throw relays 72 are connected in parallel to the resistance acquisition circuit 6. The second relay control and drive circuit 71 is connected to the cpu circuit 1. The first single-pole double-throw relay 32 and the second single-pole double-throw relay 72 can be controlled by the central processing unit circuit 1 to select a signal channel entering the data acquisition circuit, and a hardware basis for detecting open circuit and short circuit is formed.
And the first end of the cable to be tested is provided with a seventh connector. Preferably, the seventh connector model is JY27466T23E35 SN. And the second end of the cable to be tested is provided with an eighth connector. Preferably, the eighth connector type is LRM1-A50-B50-TN 1-MZ.
The first test fixture 91 is provided with a third connector and a fourth connector, respectively. The third connector is connected to the first connector 81. The fourth connector is connected with the first end of the cable to be tested.
The second test fixture 92 is provided with a fifth connector and a sixth connector, respectively. The fifth connector is connected to the second connector 82. The sixth connector is connected with the second end of the cable to be tested.
Preferably, the third connector is of the type J599/26KH35 SN. Preferably, the fourth connector model is JY27466T23E35 SN. The fourth connector is connected with the seventh connector.
Preferably, the fifth connector is of the type J599/26KH35 SN. Preferably, the sixth connector type is LRM1-A50-B50-TN 1-MZ. The sixth connector is connected with the eighth connector.
The number of connector pins of model number JY27466T23E35SN is 100. The connector pin count for model LRM1-A50-B50-TN1-MZ is 100. On the premise of replacing the first test fixture 91 and/or the second test fixture 92, testing of cables to be tested of other connectors with signal channels within 100 and 100 can be achieved, and the maximum number of signal channels capable of being tested is determined by the number of connector cores of the selected first connector 81 and the number of connector cores of the selected second connector 82. The connector selected for the first connector 81 of this embodiment is 100 cores. The connector selected for the second connector 82 in this embodiment is 100-core.
The open circuit detection method of the aviation cable automatic detection device comprises the following steps of:
step a, preparation before testing. Editing a configuration file, inputting a signal table of the cable to be tested, and inputting a corresponding relation between a pin at the first end of the cable to be tested and a pin at the second end of the cable to be tested.
And b, reading the configuration file. Namely, the software reads the signal table of the cable to be tested.
And c, setting the channel m to be 1, and setting from the signal channel number of the first relay matrix circuit 3.
And d, setting the state of the first relay matrix circuit 3, and conducting the first relay matrix circuit 3 of the signal channel to be detected. And a first relay matrix circuit 3 for disconnecting the other signal paths.
And e, setting the state of the second relay matrix circuit 7, and searching the signal channel number of the second relay matrix circuit 7 in the step d according to the configuration file read in the step b. And a second relay matrix circuit 7 for conducting the signal channel to be tested. And a second relay matrix circuit 7 for disconnecting the other signal paths.
And f, collecting resistance data.
And g, storing the test data.
And h, judging whether parallel signals exist, namely, one connector pin of the cable to be tested corresponds to a plurality of pins of the other end connector, switching and setting the second relay matrix circuit 7 to a parallel signal channel if the parallel signals exist, and executing the step e. And if no parallel signal exists, executing the step i.
And i, judging whether the test is finished or not, and if so, finishing the test. If not, switching other test channels, setting the channel m as m +1, and repeating the steps d to i.
In step d of the open circuit detection method of the aviation cable automatic detection device, when the first relay matrix circuit 3 is set, after the first relay matrix circuit 3 of the signal channel to be detected is turned on, the first relay matrix circuits 3 of other signal channels need to be turned off. The relay of one signal channel is ensured to be conducted during testing.
In the step e of the open circuit detection method of the aviation cable automatic detection device, when the second relay matrix circuit 7 is set, after the second relay matrix circuit 7 of the signal channel to be detected is switched on, the second relay matrix circuits 7 of other signal channels need to be switched off, so that the relay of only one signal channel is switched on during the test.
The short circuit detection method of the automatic aviation cable detection device comprises the following steps of:
step a, preparation before testing. And editing the configuration file, and inputting a signal table of the cable to be tested, namely the corresponding relation between the pin at the first end of the cable to be tested and the pin at the second end of the cable to be tested.
And b, reading the configuration file. Namely, the software reads the signal table of the cable to be tested.
And c, setting a channel M, N. The signal channel number of the first relay matrix circuit 3 is set. Start test M ═ 1. The signal channel number of the second relay matrix circuit 7 is set. Test N is started as 1.
And d, scanning the signal channel number of the first relay matrix circuit 3, and conducting the first relay matrix circuit 3 of the signal channel to be detected. And a first relay matrix circuit 3 for disconnecting the other signal paths.
And e, judging whether the signal channel number of the second relay matrix circuit 7 is in a normal connection relation. If yes, the signal channel number of the second relay matrix circuit 7 is set. The test N +1 is started and step f is executed. If not, executing the step f.
And f, scanning the signal channel number of the second relay matrix circuit 7, and conducting the second relay matrix circuit 7 of the signal channel to be detected. And a second relay matrix circuit 7 for disconnecting the other signal paths.
And g, collecting resistance data.
And h, storing the test data.
And step i, judging whether all signal channels of the second relay matrix circuit 7 are finished or not. If yes, go to step j. If not, the signal channel number of the second relay matrix circuit 7 is set. The test N +1 is started and step e is executed.
And j, judging whether all signal channels of the first relay matrix circuit 3 are finished or not. If yes, go to step k. If not, the signal channel number of the first relay matrix circuit 3 is set. The test M +1 is started and step d is performed.
And step k, judging data. If the signal channel number of the first relay matrix circuit 3 and the signal channel number of the second relay matrix circuit 7 are mutually conducted, the short circuit is determined.
And step l, finishing the test.
The short circuit detection method of the aviation cable automatic detection device is realized in a channel traversing mode, namely, one channel of the first relay matrix circuit 3 is tested to test the conduction relation between the channel and all channels of the second relay matrix circuit 7, and except for the normal connection relation in the configuration file, if one channel of the first relay matrix circuit 3 is conducted with a signal channel in the second relay matrix circuit 7 (the test resistance value is small), the short circuit is determined.
The aviation cable automatic detection device provides a hardware foundation, and the automatic open circuit test and the automatic short circuit test are completed through the open circuit method and the short circuit method, so that manual intervention is not needed in the process, and the test accuracy and efficiency are greatly improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that other variations and modifications could be made by those skilled in the art without departing from the spirit of the invention, and these would fall within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (8)

1. The utility model provides an automatic detection device of aviation cable which characterized in that: the intelligent control system comprises a central processing unit circuit, a power supply, a first relay matrix circuit, a communication circuit, an alarm circuit, a resistance acquisition circuit and a second relay matrix circuit; the central processor circuit comprises a communication interface, an alarm interface, a data interface and a power interface;
the input end of the first relay matrix circuit is connected with the first end of the cable to be tested, and the input end of the second relay matrix circuit is connected with the second end of the cable to be tested; the output end of the first relay matrix circuit and the output end of the second relay matrix circuit are respectively connected with the resistance acquisition circuit; the power supply is connected with the power supply interface; the first relay matrix circuit, the second relay matrix circuit and the resistance acquisition circuit are respectively connected with each data interface; the communication circuit is connected with the communication interface; the alarm circuit is connected with the alarm interface; the communication circuit is connected with an upper computer.
2. The automatic aviation cable detection device of claim 1, wherein: the test fixture comprises a first connector, a second connector, a first test fixture and a second test fixture; the first test tool is connected with the first end of the cable to be tested; the second test tool is connected with the second end of the cable to be tested; the first connector is respectively connected with the input end of the first relay matrix circuit and the first test tool; and the second connector is respectively connected with the input end of the second relay matrix circuit and the second test tool.
3. The automatic aviation cable detection device of claim 2, wherein: the first relay matrix circuit comprises a first relay control and drive circuit and at least one first single-pole double-throw relay; the fixed end of the first single-pole double-throw relay is connected with the resistance acquisition circuit; when the number of the first single-pole double-throw relays is multiple, the fixed ends of the first single-pole double-throw relays are connected with each other; the first relay control and drive circuit is connected with a control signal end of the first single-pole double-throw relay; and the first movable end of the first single-pole double-throw relay is connected with the first connector.
4. The automatic aviation cable detection device of claim 2, wherein: the second relay matrix circuit comprises a second relay control and drive circuit and at least one second single-pole double-throw relay; the fixed end of the second single-pole double-throw relay is connected with the resistance acquisition circuit; when the number of the second single-pole double-throw relays is multiple, the fixed ends of the second single-pole double-throw relays are connected with each other; the second relay control and drive circuit is connected with a control signal end of the second single-pole double-throw relay; and the first movable end of the second single-pole double-throw relay is connected with the second connector.
5. The automatic aviation cable detection device of claim 2, wherein: the first test tool is respectively provided with a third connector and a fourth connector; the third connector is connected with the first connector; the fourth connector is connected with the first end of the cable to be tested.
6. The automatic aviation cable detection device of claim 5, wherein: the second testing tool is respectively provided with a fifth connector and a sixth connector; the fifth connector is connected with the second connector; and the sixth connector is connected with the second end of the cable to be tested.
7. A circuit breaking detection method of an aviation cable automatic detection device is characterized by comprising the following steps: when the aviation cable automatic detection device works, the open circuit detection method of the aviation cable automatic detection device comprises the following steps:
step a, preparing before testing; editing a configuration file, inputting a signal table of a cable to be tested, and inputting a corresponding relation between a pin at a first end of the cable to be tested and a pin at a second end of the cable to be tested;
step b, reading a configuration file; namely, the software reads a signal table of the cable to be tested;
step c, setting a channel m to be 1, and setting from a signal channel number of the first relay matrix circuit;
d, setting the state of the first relay matrix circuit, and conducting the first relay matrix circuit of the signal channel to be tested; the first relay matrix circuit is used for disconnecting other signal channels;
e, setting the state of the second relay matrix circuit, and searching the signal channel number of the second relay matrix circuit in the step d according to the configuration file read in the step b; the second relay matrix circuit is used for conducting a signal channel to be tested; the second relay matrix circuit is used for disconnecting other signal channels;
step f, collecting resistance data;
step g, storing test data;
step h, judging whether parallel signals exist, namely, one connector pin of the cable to be tested corresponds to a plurality of pins of the other end connector, switching and setting a second relay matrix circuit to a parallel signal channel if the parallel signals exist, and executing step e; if no parallel signal exists, executing the step i;
step i, judging whether the test is finished or not, if so, ending the test; if not, switching other test channels, setting the channel m as m +1, and repeating the steps d to i.
8. A short circuit detection method of an aviation cable automatic detection device is characterized by comprising the following steps: when the aviation cable automatic detection device works, the short circuit detection method of the aviation cable automatic detection device comprises the following steps:
step a, preparing before testing; editing a configuration file, and inputting a signal table of the cable to be tested, namely the corresponding relation between a pin at the first end of the cable to be tested and a pin at the second end of the cable to be tested;
step b, reading a configuration file; namely, the software reads a signal table of the cable to be tested;
step c, setting a channel M, N; setting a signal channel number of a first relay matrix circuit; start test M ═ 1; setting a signal channel number of a second relay matrix circuit; start test N ═ 1;
d, scanning the signal channel number of the first relay matrix circuit, and conducting the first relay matrix circuit of the signal channel to be detected; the first relay matrix circuit is used for disconnecting other signal channels;
step e, judging whether the signal channel number of the second relay matrix circuit is in a normal connection relation; if yes, setting a signal channel number of a second relay matrix circuit; starting to test N is equal to N +1, and executing the step f; if not, executing the step f;
step f, scanning the signal channel number of the second relay matrix circuit, and conducting the second relay matrix circuit of the signal channel to be detected; the second relay matrix circuit is used for disconnecting other signal channels;
step g, collecting resistance data;
step h, storing test data;
step i, judging whether all signal channels of the second relay matrix circuit are finished or not; if yes, executing step j; if not, setting a signal channel number of the second relay matrix circuit; starting to test N-N +1, and executing the step e;
j, judging whether all signal channels of the first relay matrix circuit are finished or not; if yes, executing step k; if not, setting a signal channel number of the first relay matrix circuit; starting to test M +1, and executing step d;
step k, judging data; if the signal channel number of the first relay matrix circuit is mutually conducted with the signal channel number of the second relay matrix circuit, the short circuit is determined;
and step l, finishing the test.
CN202111121929.6A 2021-09-24 2021-09-24 Aviation cable automatic detection device and detection method for open circuit and short circuit thereof Withdrawn CN113835042A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117420377A (en) * 2023-12-18 2024-01-19 西安现代控制技术研究所 Multichannel relay array monitoring method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117420377A (en) * 2023-12-18 2024-01-19 西安现代控制技术研究所 Multichannel relay array monitoring method
CN117420377B (en) * 2023-12-18 2024-04-26 西安现代控制技术研究所 Multichannel relay array monitoring method

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Application publication date: 20211224