CN218772127U - Line calibration assistor for urban rail vehicle network line - Google Patents
Line calibration assistor for urban rail vehicle network line Download PDFInfo
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- CN218772127U CN218772127U CN202222406228.3U CN202222406228U CN218772127U CN 218772127 U CN218772127 U CN 218772127U CN 202222406228 U CN202222406228 U CN 202222406228U CN 218772127 U CN218772127 U CN 218772127U
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Abstract
The utility model belongs to the technical field of urban rail train test, in particular to a line calibration auxiliary device of urban rail vehicle network lines, which comprises an MVB joint and a plurality of resistors; the number of the resistors is the same as the number of pins of the MVB connector; the pin of each MVB connector is electrically connected with the metal shell of the MVB connector through a resistor; all the resistors have resistance values different from each other. When the line calibration auxiliary device is used, the MVB connector can be directly connected to one end of a network line of an urban rail vehicle in an abutting-joint mode, manual measurement is directly carried out on the other end of the network line by using a universal meter, and one person can operate the whole process; the cable checking device is simple to operate and convenient to use, and can improve the cable checking efficiency of urban rail vehicle network cables.
Description
Technical Field
The utility model belongs to the technical field of city rail train test, concretely relates to school line assistor of city rail vehicle net twine.
Background
The train network system of the urban rail train is mainly responsible for controlling, monitoring and diagnosing the traction, braking, bogie, auxiliary power supply, vehicle door, air conditioner and other systems of the motor train unit. The train on-board network architecture includes a Multifunction Vehicle Bus (MVB) for connecting various devices within a Vehicle or a group of Vehicle units.
At present, in the production debugging process of the multifunctional vehicle bus of the metro vehicle, network cable faults such as misconnection, missed connection and short connection are easy to occur, and in the traditional mode of urban rail vehicle network cable calibration, two persons often perform matching tests at two ends of a network cable respectively, so that the mode wastes labor, and the cable calibration efficiency is low, so that an auxiliary cable calibration assistor is necessary to be designed.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that prior art exists, this scheme provides a school line assistor of city rail vehicle net twine.
The utility model discloses the technical scheme who adopts does:
a line calibration aid for urban rail vehicle network lines comprises an MVB connector and a plurality of resistors; the number of the resistors is the same as the number of pins of the MVB connector; the pin of each MVB connector is electrically connected with the metal shell of the MVB connector through a resistor; all the resistors have resistance values different from each other.
Optionally: when the MVB connector is butted with the urban rail vehicle network cable, the metal shell of the MVB connector is electrically connected with the shielding layer of the urban rail vehicle network cable; and each stitch of the MVB connector is electrically connected with each core wire of the urban rail vehicle network cable correspondingly.
Optionally: the lowest value of the difference in resistance values between the resistors is not less than 100 ohms.
Optionally: the auxiliary device is in butt joint with one end of the urban rail vehicle network cable through the MVB joint, and the universal meter is used for testing the other end of the urban rail vehicle network cable.
Optionally: the resistor is connected on the PCB in a welding mode, and a PCBA board is formed.
Optionally: the assistor further comprises an insulating packaging shell, the packaging shell is rectangular, and the PCBA board is fixedly mounted in the packaging shell.
Optionally: the package may include a lower package housing and an upper package housing; the lower packaging shell and the upper packaging shell can be buckled with each other.
Optionally: the MVB joint is embedded at the joint of the lower packaging shell and the upper packaging shell.
Optionally: the PCBA board is connected with conductive cords, and different resistors are electrically connected to different pins of the MVB connector through different conductive cords.
The beneficial effects of the utility model are that: when the line calibration auxiliary device is used, the MVB connector can be directly butted to one end of a network cable of an urban rail vehicle, the other end of the network cable is directly measured manually by a universal meter, and one person can operate the whole process; the cable checking device is simple to operate and convenient to use, and can improve the cable checking efficiency of the urban rail vehicle network cable.
Drawings
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
FIG. 1 is a circuit diagram of the line calibration aid of the present solution;
fig. 2 is a sectional view of a package structure of the line calibration assistant.
Description of the drawings: 1-MVB linker; 2-upper package shell; 3-lower package housing; 4-a resistor; 5-PCB board; 6-conductive cord.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, the present embodiment designs a line calibration aid for a network cable of an urban rail vehicle, which includes an MVB connector 1 and a plurality of resistors 4.
The number of the resistors 4 is the same as that of pins of the MVB connector 1, when the MVB connector 1 adopts a 9-pin connector, the number of the resistors 4 is 9, and the resistors 4 are respectively R1, R2, R3, R4, R5, R6, R7, R8 and R9; the pin of each MVB connector 1 is electrically connected with the metal shell thereof through a resistor 4 (R1-R9); all the resistors 4 have resistance values different from each other.
The lowest value of the difference between the resistance values of the resistors 4 is not less than 100 ohms, in this embodiment, the resistance value of R1 is 100 ohms, the resistance value of R2 is 200 ohms, the resistance value of R3 is 300 ohms, the resistance value of R4 is 400 ohms, the resistance value of R5 is 500 ohms, the resistance value of R6 is 600 ohms, the resistance value of R7 is 700 ohms, the resistance value of R8 is 800 ohms, and the resistance value of R9 is 900 ohms.
When the MVB connector 1 is butted with the urban rail vehicle network cable, the metal shell of the MVB connector 1 is electrically connected with the shielding layer of the urban rail vehicle network cable; and each pin of the MVB joint 1 is electrically connected with each core wire of the urban rail vehicle network cable correspondingly.
When the assistor is used in this embodiment, connect 1 butt joint to the one end of urban rail vehicle net twine through the MVB earlier, then utilize the universal meter to test at the other end of urban rail vehicle net twine by the school wire personnel. When the resistance value between the stitch measured at the joint of the other end of the urban rail vehicle network cable and the shielding layer is matched, the core cable can be judged to be correct, otherwise, the core cable is wrong.
Example 2
As shown in fig. 1 to 2, the present embodiment designs a wire calibration aid for a mesh wire of an urban rail vehicle, which includes an enclosure, a PCBA board, and an MVB connector 1.
The packaging shell is rectangular, and the PCBA board is fixedly installed in the packaging shell.
The PCBA board is formed by soldering the resistor 4 to the PCB board 5. The number of the resistors 4 is the same as that of pins of the MVB connector 1; the pin of each MVB connector 1 is electrically connected with the metal shell thereof through a resistor 4; all the resistors 4 have resistance values different from each other.
The package may comprise a lower package housing 3 and an upper package housing 2; the lower package housing 3 and the upper package housing 2 can be fastened to each other.
The MVB joint 1 is embedded at the joint of the lower packaging shell 3 and the upper packaging shell 2.
The PCBA board has a conductive cord 6 attached thereto, and different resistors 4 are electrically connected to different pins of the MVB header 1 through different conductive cords 6.
The embodiment adopts a unified packaging structure, has the advantages of smaller volume, more convenience for carrying and the like, has the advantage of wide application range, and can be suitable for wire calibration of connectors such as a single-line MVB plug, an MVB double-inlet plug, a door 237 communication plug, a broadcast communication nine-core plug and the like of an urban railway vehicle; in addition, the structure of the embodiment has low manufacturing cost, avoids secondary faults caused by secondary wiring, and reduces the loss of manpower, material resources and financial resources; the working strength can be reduced, the working efficiency is improved, and the debugging period is shortened.
The above examples are merely examples for clarity of description and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.
Claims (9)
1. The utility model provides a school line assistor of urban rail vehicle net twine which characterized in that: comprises an MVB connector (1) and a plurality of resistors (4); the number of the resistors (4) is the same as that of pins of the MVB connector (1); the pin of each MVB connector (1) is electrically connected with the metal shell thereof through a resistor (4); all the resistors (4) have resistance values different from each other.
2. The line calibration auxiliary device for urban rail vehicle network lines as claimed in claim 1, wherein: when the MVB connector (1) is in butt joint with the urban rail vehicle network cable, the metal shell of the MVB connector (1) is electrically connected with the shielding layer of the urban rail vehicle network cable; and each pin of the MVB joint (1) is electrically connected with each core wire of the urban rail vehicle network cable correspondingly.
3. The line calibration auxiliary device for urban rail vehicle network lines as claimed in claim 1, wherein: the lowest value of the difference in resistance values between the resistors (4) is not less than 100 ohms.
4. The line calibration auxiliary device for urban rail vehicle network lines as claimed in claim 1, wherein: the auxiliary device is in butt joint with one end of the urban rail vehicle network cable through the MVB connector (1), and a universal meter is used for testing the other end of the urban rail vehicle network cable.
5. The line calibration auxiliary device for urban rail vehicle network lines according to any one of claims 1-4, characterized in that: the resistor (4) is connected on the PCB board (5) in a welding mode and forms a PCBA board.
6. The line calibration assistant for urban rail vehicle network lines according to claim 5, characterized in that: the assistor further comprises an insulating packaging shell, the packaging shell is rectangular, and the PCBA board is fixedly mounted in the packaging shell.
7. The line calibration assistant for urban rail vehicle network lines according to claim 6, characterized in that: the package comprises a lower package housing (3) and an upper package housing (2); the lower packaging shell (3) and the upper packaging shell (2) can be buckled with each other.
8. The line calibration assistant for urban rail vehicle network lines according to claim 7, characterized in that: the MVB joint (1) is embedded at the joint of the lower packaging shell (3) and the upper packaging shell (2).
9. The line calibration assistant for urban rail vehicle network lines according to claim 8, characterized in that: the PCBA board is connected with conductive flexible wires (6), and different resistors (4) are electrically connected to different pins of the MVB connector (1) through different conductive flexible wires (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222406228.3U CN218772127U (en) | 2022-09-12 | 2022-09-12 | Line calibration assistor for urban rail vehicle network line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222406228.3U CN218772127U (en) | 2022-09-12 | 2022-09-12 | Line calibration assistor for urban rail vehicle network line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218772127U true CN218772127U (en) | 2023-03-28 |
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ID=85695287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222406228.3U Active CN218772127U (en) | 2022-09-12 | 2022-09-12 | Line calibration assistor for urban rail vehicle network line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218772127U (en) |
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2022
- 2022-09-12 CN CN202222406228.3U patent/CN218772127U/en active Active
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