CN107342790B - Networking test system for drawer type power line broadband carrier communication module - Google Patents
Networking test system for drawer type power line broadband carrier communication module Download PDFInfo
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- CN107342790B CN107342790B CN201710687460.XA CN201710687460A CN107342790B CN 107342790 B CN107342790 B CN 107342790B CN 201710687460 A CN201710687460 A CN 201710687460A CN 107342790 B CN107342790 B CN 107342790B
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- radio frequency
- circuit substrate
- mounting box
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
- H04B3/48—Testing attenuation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/58—Repeater circuits
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
A drawer type power line broadband carrier communication module networking test system comprises: the system comprises a power module, a broadband power line carrier routing module, a processing unit and a networking unit, wherein the processing unit is connected with the broadband power line carrier routing module, the broadband power line carrier routing module is connected with one networking unit, and the networking unit is in cascade networking with other networking units through shielding radio frequency wires; the networking unit comprises a circuit substrate, a program-controlled attenuator arranged on the circuit substrate, a signal coupler, a plurality of carrier modules, an electronic switch and a radio frequency connector; each networking unit is arranged in a drawer type mounting box made of metal respectively, the drawer type mounting box comprises a mounting box body and a drawer, a circuit substrate of each networking unit is arranged in the drawer, and the drawer is arranged in the mounting box body through a guide rail and can move along the guide rail. The invention can observe and change the communication module in real time in the networking test process, thereby improving the convenience of test operation.
Description
Technical Field
The invention belongs to the technical field of power line broadband carrier communication, and particularly relates to a networking test system for a power line broadband carrier communication module.
Background
With the vigorous promotion of broadband power line carrier technology to replace narrowband power line carrier technology to enter an automatic meter reading system of an electric energy meter by national power grid companies and southern power grid companies, the technical specification of low-voltage power line broadband carrier communication is formally released in 7 months in 2017, and the application of the broadband power line carrier in the field of automatic meter reading of the electric energy meter starts to enter a state of athermalization. Therefore, each province network company and each electric meter manufacturer need to build a set of networking test platform aiming at the power line broadband carrier communication module, and routing algorithms and networking capability limits of different carrier schemes are tested by simulating various complex field environments and realizing flexible and changeable routing modes.
The Chinese invention patent with the patent number 201410817509.5 discloses a power line carrier meter reading networking test system, which comprises a power module, a broadband power line carrier routing module, a processing unit and a networking unit; the processing unit is connected with the broadband power line carrier routing module, the broadband power line carrier routing module is connected with one networking unit through a shielding radio frequency line, and the rest networking units are cascaded with other networking units through shielding radio frequency lines for networking; a plurality of replaceable carrier modules are arranged in the networking unit, one carrier module is connected with one single chip microcomputer, the carrier modules can be replaced, the attenuation value among the communication nodes and the carrier signal routing direction can be controlled, and the self-adaptive networking test of the computer is achieved. However, the greatest disadvantage of the test system is that the networking unit is placed in a totally-enclosed metal shielding shell, the communication module cannot be conveniently observed and replaced in real time in the networking test process, great inconvenience is brought to an operator both in installation, debugging and test operation, and user experience is poor.
Disclosure of Invention
The invention aims to provide a drawer type power line broadband carrier module networking test system which can improve the convenience of test operation.
In order to achieve the purpose, the invention adopts the following technical solutions:
drawer type power line broadband carrier communication module networking test system includes: the system comprises a power module, a broadband power line carrier routing module, a processing unit and a networking unit, wherein the processing unit is connected with the broadband power line carrier routing module, the broadband power line carrier routing module is connected with one networking unit, and the networking unit is in cascade networking with other networking units through shielding radio frequency wires; the networking unit comprises a circuit substrate, a program-controlled attenuator arranged on the circuit substrate, a signal coupler, a plurality of carrier modules, an electronic switch and a radio frequency connector; each networking unit is arranged in a drawer type mounting box made of metal respectively, the drawer type mounting box comprises a mounting box body and a drawer, a circuit substrate of each networking unit is arranged in the drawer, and the drawer is arranged in the mounting box body through a guide rail and can move along the guide rail.
More specifically, adjacent carrier modules in the networking unit are connected through a differential carrier signal line, and the differential carrier signal line is wired in an inner layer of the circuit substrate.
More specifically, the top surface and the bottom surface of the circuit substrate are respectively provided with a copper-clad ground plane.
More specifically, the differential carrier signal line is connected to the rf connector via a differential-to-single-ended circuit disposed on the circuit substrate.
More specifically, this internal tank chain that is provided with of mounting box, the one end of tank chain is fixed on the drawer, and the other end is fixed mutually with the mounting box body, and the radio frequency cable sets up in the tank chain.
According to the technical scheme, the networking unit is arranged in the drawer type box body, so that the space coupling of broadband carrier signals in two adjacent networking unit pieces can be effectively prevented, the communication module can be observed and replaced in real time in the networking test process, and the convenience of test operation is improved. The invention controls the attenuation value among the networking units through the computer, can freely switch the routing direction of the carrier signal networking, and realizes the relay cascade among the networking units.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.
FIG. 1 is a block diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a networking cabinet according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a drawer-type mounting box according to an embodiment of the present invention.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Detailed Description
As shown in fig. 1, the networking test system of the present embodiment includes a power module 1, a broadband power line carrier routing module 2, a processing unit 3, and at least one networking unit 4. The broadband power line carrier routing module 2 is connected with the processing unit 3 through a data transmission line, and the processing unit 3 in this embodiment is a computer. The broadband power line carrier routing module 2 is connected with a networking unit 4 through a shielding radio frequency line, and the networking unit 4 connected with the broadband power line carrier routing module 2 is cascaded with other networking units through the shielding radio frequency line for networking. The power module 1 is connected with the networking unit 4 to supply power to the networking unit 4, the power module 1 of the embodiment is a 12V direct-current power supply, and one power module 1 can supply power to four networking units 4 through shielding radio frequency wires. The structure of each networking unit 4 is the same, and the networking units 4 are connected through shielded cables.
The networking unit comprises a program-controlled attenuator, a signal coupler, a carrier module, a single chip microcomputer, an electronic switch and a radio frequency connector. The program-controlled attenuator, the signal coupler, the carrier module, the single chip microcomputer, the electronic switch and the radio frequency connector are all arranged on the circuit substrate. The structure of the networking unit of the invention is the same as that of the networking unit in patent No. 201410817509.5. A plurality of carrier wave modules set up on a circuit substrate, and every carrier wave module all links to each other with a singlechip that sets up on circuit substrate, links to each other through differential carrier signal line between the adjacent carrier wave module of this embodiment, and differential carrier signal line adopts the circuit substrate inlayer to walk the form of line. And copper-clad ground planes for shielding carrier signals of the inner-layer wiring are respectively arranged on the top surface and the bottom surface of the circuit substrate so as to reduce interference. The differential carrier signal line is connected with the radio frequency connector through a differential-to-single-ended circuit arranged on the circuit substrate. The differential-to-single-ended circuit converts the differential carrier signal into a single-ended carrier signal, and the single-ended carrier signal is connected with a radio frequency port outside the networking unit through a radio frequency connector and a radio frequency cable.
According to the invention, each networking unit is independently arranged in a drawer type mounting box 5, and the drawer type mounting box is made of metal materials so as to realize the purpose of blocking the spatial coupling among the nodes. A plurality of drawer-type mounting boxes 5 are mounted within a networking cabinet 6 (fig. 2) of the test system. Fig. 3 is a schematic structural diagram of the drawer-type mounting box 5, and as shown in fig. 3, the drawer-type mounting box includes a mounting box body 5-1 and a drawer 5-2, a circuit substrate 5-3 is mounted in the drawer 5-2, a carrier module 5-4 is disposed on the circuit substrate 5-3, one end of a radio frequency cable 5-6 is connected to a radio frequency connector 5-5 on the circuit substrate 5-3, and the other end is connected to a radio frequency port (not numbered) on the mounting box body 5-1. The drawer 5-2 is disposed in the mounting box body 5-1 by a rail structure (not shown) and is movable along the rail. Preferably, a tank chain 5-7 is arranged in the mounting box body 5-1, one end of the tank chain 5-7 is fixed on the drawer 5-2, the other end of the tank chain 5-7 is fixed with the mounting box body 5-1, the radio frequency cable 5-6 is arranged in the tank chain 5-7, and the tank chain 5-7 is used for guiding and protecting the radio frequency cable in the sliding process of the drawer.
The circuit substrate of the networking unit is arranged in the drawer type mounting box, differential carrier signals of all carrier modules in the networking unit are transmitted through inner-layer wiring of the circuit substrate, the differential carrier signals are converted into single-ended carrier signals through a differential-to-single-ended circuit arranged on the circuit substrate, the single-ended carrier signals are connected with an external radio frequency port through a radio frequency connector and a radio frequency cable arranged on the circuit substrate, and therefore spatial coupling of broadband carrier signals in two adjacent networking unit elements is effectively prevented, communication modules can be observed and replaced in real time in the networking test process, and convenience of test operation is greatly improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention.
Claims (2)
1. Drawer type power line broadband carrier communication module networking test system includes: the broadband power line carrier routing module is connected with one networking unit through a shielding radio frequency line, and the networking unit is cascaded with other networking units through the shielding radio frequency line for networking; the networking unit comprises a circuit substrate, a single chip microcomputer arranged on the circuit substrate, a plurality of carrier modules and a radio frequency connector, wherein each carrier module is connected with the single chip microcomputer arranged on the circuit substrate;
the method is characterized in that:
each networking unit is respectively arranged in a drawer type mounting box made of metal, the drawer type mounting box comprises a mounting box body and a drawer, a circuit substrate of each networking unit is arranged in the drawer, and the drawer is arranged in the mounting box body through a guide rail and can move along the guide rail;
adjacent carrier modules in the networking unit are connected through differential carrier signal lines, the differential carrier signal lines are arranged on inner layers of the circuit substrate, copper-clad ground planes are respectively arranged on the top surface and the bottom surface of the circuit substrate, the differential carrier signal lines are connected with a radio frequency connector through a differential-to-single-ended circuit arranged on the circuit substrate, and the radio frequency connector is connected with an external radio frequency port through a radio frequency cable.
2. The drawer-type power line broadband carrier communication module networking test system of claim 1, wherein: this internal tank chain that is provided with of mounting box, the one end of tank chain is fixed on the drawer, and the other end is fixed mutually with the mounting box body, and the radio frequency cable sets up in the tank chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710687460.XA CN107342790B (en) | 2017-08-11 | 2017-08-11 | Networking test system for drawer type power line broadband carrier communication module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710687460.XA CN107342790B (en) | 2017-08-11 | 2017-08-11 | Networking test system for drawer type power line broadband carrier communication module |
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| Publication Number | Publication Date |
|---|---|
| CN107342790A CN107342790A (en) | 2017-11-10 |
| CN107342790B true CN107342790B (en) | 2023-04-18 |
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| CN201710687460.XA Active CN107342790B (en) | 2017-08-11 | 2017-08-11 | Networking test system for drawer type power line broadband carrier communication module |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4702535A (en) * | 1986-02-24 | 1987-10-27 | Northern Telecom Limited | Electronic equipment drawer |
| US5131272A (en) * | 1990-03-15 | 1992-07-21 | Harris Corporation | Portable deployable automatic test system |
| US5227957A (en) * | 1992-05-14 | 1993-07-13 | Deters John B | Modular computer system with passive backplane |
| US5854904A (en) * | 1996-10-15 | 1998-12-29 | Brown; Erik Lee | Object-oriented modular electronic component system |
| CN104734745A (en) * | 2014-12-24 | 2015-06-24 | 珠海慧信微电子有限公司 | Power line broadband carrier communication module networking test system of built-in programmable attenuator |
-
2017
- 2017-08-11 CN CN201710687460.XA patent/CN107342790B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4702535A (en) * | 1986-02-24 | 1987-10-27 | Northern Telecom Limited | Electronic equipment drawer |
| US5131272A (en) * | 1990-03-15 | 1992-07-21 | Harris Corporation | Portable deployable automatic test system |
| US5227957A (en) * | 1992-05-14 | 1993-07-13 | Deters John B | Modular computer system with passive backplane |
| US5854904A (en) * | 1996-10-15 | 1998-12-29 | Brown; Erik Lee | Object-oriented modular electronic component system |
| CN104734745A (en) * | 2014-12-24 | 2015-06-24 | 珠海慧信微电子有限公司 | Power line broadband carrier communication module networking test system of built-in programmable attenuator |
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| CN107342790A (en) | 2017-11-10 |
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