CN210225439U

CN210225439U - Special ultra-long-distance DSL four-network-port relay module with cascade function for coal mine

Info

Publication number: CN210225439U
Application number: CN201920418138.1U
Authority: CN
Inventors: Jiangshan Gu; 顾江山; Pan Wang; 王攀
Original assignee: SHAOXING AODUN ELECTRONICS CO Ltd
Current assignee: SHAOXING AODUN ELECTRONICS CO Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-03-31
Anticipated expiration: 2029-03-29

Abstract

The utility model discloses a super-long distance DSL four-network port relay module with cascade function special for coal mine, which comprises a front end transmitter (1) and a terminal receiver (2) which are used in pairs and have the same structure; the front-end transmitter (1) comprises signal input ports (1-8) and signal output ports (1-11), wherein the signal input ports (1-8) and the signal output ports (1-11) are sequentially connected with one another: the system comprises front-end hybrid circuits (1-7), analog front-end AFEs (1-6), serial flashes (1-5), SDRAMs (1-4), digital processing modules (1-3), switch chips (1-9), network transformers (1-10), digital processing modules (1-13), SDRAMs (1-14), serial flashes (1-15), analog front-end AFEs (1-16) and front-end hybrid circuits (1-17). The utility model discloses realize the network transmission that has no loss and transmission distance is far away to the bandwidth that can cascade.

Description

Special ultra-long-distance DSL four-network-port relay module with cascade function for coal mine

Technical Field

The utility model relates to a network transmission device especially relates to a special super remote DSL four net gape relay module who takes cascade function in colliery.

Background

Network transmission refers to the process of communicating according to a network transmission protocol with a series of lines (optical fibers, twisted pair, etc.) through a circuit's adjustment changes. In which network transmission requires a medium, i.e. a physical path between a sender and a receiver in the network, which has an impact on the data communication of the network. Common transmission media are: twisted pair, coaxial cable, fiber optics, and wireless transmission media. Network protocols are some specifications for the transfer, management, of information in networks, including the internet.

A repeater (RP repeater) is a device that connects network lines and is often used for bidirectional forwarding of physical signals between two network nodes. The repeater mainly completes the function of a physical layer, is responsible for transmitting information on the physical layers of two nodes according to bits, and completes the functions of copying, adjusting and amplifying signals so as to prolong the length of the network. Due to the loss, the power of the signal transmitted on the line will gradually attenuate, and when the attenuation reaches a certain degree, the signal will be distorted, thereby causing a receiving error. Repeaters are designed to solve this problem. It completes the connection of physical line, amplifies the attenuated signal and keeps the same as the original data.

For example, an ADSL repeater disclosed in patent application publication No. CN201063688, where a local side repeater is connected to a remote repeater through a connection line, one end of a local side ADSL transformer of the local side repeater is connected to a local side input port, the other end of the local side ADSL transformer is connected to a local side hybrid circuit, a local side power converter is connected to a local side main control circuit and the local side hybrid circuit at the same time, one end of a local side audio transformer is connected to the local side input port through a local side separator, and the other end of the local side audio transformer is connected to the local side hybrid circuit; one end of a far-end ADSL transformer of the far-end repeater is connected with a far-end input port, the other end of the far-end ADSL transformer is connected with a far-end hybrid circuit through an ADSL amplifying circuit, one end of a far-end audio transformer is connected with the far-end input port through a far-end separator, the other end of the far-end audio transformer is connected with a far-end signal hybrid circuit, and a far-end power converter is simultaneously connected with the far-end input port.

Because of the special working environment of the coal industry, underground coal transportation channels are long, in order to know the safety condition of underground personnel and whether the underground coal transportation channels are abnormal or not, the distance between every two adjacent transportation channels is 500-1000 meters, and communication equipment such as a camera, a voice interphone and the like needs to be installed at a total distance of about 3000 meters.

In order to solve the above problems, a network transmission module which is lossless in bandwidth and has a long transmission distance and can be cascaded is needed.

SUMMERY OF THE UTILITY MODEL

For the problem that overcomes prior art exists, the utility model provides a special four net gape relay modules of super remote DSL of taking cascade function in colliery is the network transmission module that can cascade to the lossless and transmission distance of bandwidth far away.

The utility model discloses a specific technical scheme as follows:

an ultra-long distance DSL four-network-port relay module with a cascade function special for a coal mine comprises a front-end transmitter and a terminal receiver which are used in pairs and have the same structure;

the front-end transmitter comprises a first signal input port and a first signal output port, and the first signal input port and the first signal output port are sequentially connected with one another: the system comprises a first front end hybrid circuit, a first analog front end AFE, a first serial Flash, a first SDRAM, a first digital processing module, a first switch chip, a first network transformer, a second digital processing module, a second SDRAM, a second serial Flash, a second analog front end AFE and a second front end hybrid circuit.

Preferably, the terminal receiver includes a second signal input port and a second signal output port, and the second signal input port and the second signal output port are provided with: the second front-end hybrid circuit comprises a second front-end hybrid circuit, a second analog front-end AFE, a second serial Flash, a second SDRAM, a second digital processing module, a second switch chip, a second network transformer, a fourth digital processing module, a fourth SDRAM, a fourth serial Flash, a fourth analog front-end AFE and a fourth front-end hybrid circuit.

Preferably, the front-end transmitter is internally provided with a first power module for supplying power to the second digital processing module, the second SDRAM, the second serial Flash, the second analog front-end AFE and the second front-end hybrid circuit.

Preferably, the front-end transmitter is internally provided with a second power module for supplying power to the first front-end hybrid circuit, the first analog front-end AFE, the first serial Flash, the first SDRAM and the first digital processing module.

Preferably, a third power module for supplying power to the fourth digital processing module, a fourth SDRAM, a fourth serial Flash, a fourth analog front end AFE and a fourth front end hybrid circuit is arranged in the terminal receiver.

Preferably, a fourth power module for supplying power to a third front-end hybrid circuit, a third analog front end AFE, a third serial Flash, a third SDRAM and a third digital processing module is arranged in the terminal receiver.

Preferably, the front-end transmitter is in signal connection with the terminal receiver through a twisted pair, a two-core wire or a coaxial wire.

Compared with the prior art, the relay module can be cascaded, and the broadband is lossless after the cascade connection; the transmission distance is far, the maximum distance can reach 3000 meters, and the system has the functions of multiple network ports and a switchboard.

Drawings

Fig. 1 is a block diagram of an ultra-long-distance DSL four-port relay module;

fig. 2 is a block diagram of the front-end transmitter 1;

fig. 3 is a block diagram of the terminal receiver 2.

Detailed Description

The present invention will be described in detail with reference to the following examples and drawings, but the present invention is not limited thereto.

As shown in fig. 1, the utility model discloses in the four net gape repeaters of super remote DSL of function are cascaded in special area in the colliery, network transmission module must use in pairs, and every unit module includes sending end and receiving terminal. As shown in fig. 2, the front-end transmitter 1 mainly includes 1-1 power input, 1-2 power module, 1-3 digital processing module, 1-4SDRAM,1-5 serial Flash, 1-6 analog front-end AFE, 1-7 front-end hybrid circuit, 1-8 signal input port, 1-9 switch chip, 1-10 network transformer, 1-11 signal output port, 1-12 power module, 1-13 digital processing module, 1-14SDRAM, 1-15 serial Flash, 1-16 analog front-end AFE, 1-17 front-end hybrid circuit, 1-18RJ45 port; as shown in FIG. 3, the terminal receiver 2 mainly includes 2-1 power input, 2-2 power module, 2-3 digital processing module, 2-4SDRAM, 2-5 serial Flash, 2-6 analog front end AFE, 2-7 front end mixing circuit, 2-8 signal input port, 2-9 switch chip, 2-10 network transformer, 2-11 signal output port, 2-12 power module, 2-13 digital processing module, 2-14SDRAM, 2-15 serial Flash, 2-16 analog front end AFE, 2-17 front end mixing circuit, 2-18RJ45 port, digital processing module 2-3, digital processing module 2-13, SDRAM2-4, SDRAM2-14, serial Flash2-5, serial Flash2-15, analog front end AFE2-6 and analog front end AFE 2-16.

The front-end transmitter is in signal connection with the local-end receiver through a mining twisted pair, two core wires or a coaxial wire, a power input 1-1 is respectively electrically connected with a power module 1-2, a power module 1-12, a front-end mixed circuit 1-7 and a front-end mixed circuit 1-17 in the far-end transmitter 1, the power module 1-2 is respectively electrically connected with an analog front end 1-6, a serial Flash1-5 and a digital processing module 1-3, the digital processing module 1-3 is in signal connection with an SDRAM1-4 and an exchanger chip 1-9, the exchanger chip 1-9 is in signal connection with the digital processing module 1-3 and a network transformer 1-10, the network transformer 1-10 is in signal connection with an RJ45 port 1-18 and the exchanger chip 1-9, SDRAM1-4 is in signal connection with serial Flash1-5 and a digital processing module 1-3, serial Flash1-5 is in signal connection with an analog front end AFE1-6 and an ADRAM1-4, the analog front end AFE1-6 is in signal connection with a front end hybrid circuit 1-7 and a serial Flash1-4, and the front end hybrid circuit 1-7 is in signal connection with the analog front end AFE1-6 and a signal input port 1-8. The power supply modules 1-12 are respectively electrically connected with analog front ends 1-16, serial Flash1-15 and digital processing modules 1-13, the digital processing modules 1-13 are in signal connection with SDRAM1-14 and switch chips 1-9, the switch chips 1-9 are in signal connection with the digital processing modules 1-13 and network transformers 1-10, the network transformers 1-10 are in signal connection with RJ45 ports 1-18 and switch chips 1-9, the SDRAM1-14 is in signal connection with serial Flash1-15 and digital processing modules 1-13, the serial Flash1-15 is in signal connection with analog front ends 1-16 and ADRAM1-14, the analog front ends AFE1-16 are in signal connection with front end hybrid circuits 1-17 and serial Flash1-14, the front end hybrid circuits 1-17 are in signal connection with the analog front ends AFE1-16, the analog front ends AFE1-16, Signal output ports 1-11 are in signal connection.

In the terminal receiver 2, a power input 2-1 is respectively electrically connected with a power module 2-2, a power module 2-12 and a front end mixing circuit 2-7, the front end mixing circuit 2-17 is electrically connected, the power module 2-2 is respectively electrically connected with an analog front end 2-6, a serial Flash2-5 and a digital processing module 2-3, the digital processing module 2-3 is in signal connection with an SDRAM2-4 and a switch chip 2-9, the switch chip 2-9 is in signal connection with the digital processing module 2-3 and a network transformer 2-10, the network transformer 2-10 is in signal connection with an RJ45 port 2-18 and a switch chip 2-9, the SDRAM2-4 is in signal connection with a serial Flash2-5 and the digital processing module 2-3, the serial Flash2-5 is in signal connection with an analog front end AFE2-6, ADRAM2-4 is in signal connection, the analog front end AFE2-6 is in signal connection with the front end hybrid circuit 2-7 and the serial Flash2-4, and the front end hybrid circuit 2-7 is in signal connection with the analog front end AFE2-6 and the signal input port 2-8. The power module 2-12 is respectively electrically connected with an analog front end 2-16, a serial Flash2-15 and a digital processing module 2-13, the digital processing module 2-13 is in signal connection with an SDRAM2-14 and an exchanger chip 2-9, the exchanger chip 2-9 is in signal connection with the digital processing module 2-13 and a network transformer 2-10, the network transformer 2-10 is in signal connection with an RJ45 port 2-18 and an exchanger chip 2-9, the SDRAM2-14 is in signal connection with a serial Flash2-15 and a digital processing module (VSP210D)2-13, the serial Flash2-15 is in signal connection with an analog front end AFE2-16 and an ADRAM2-14, the analog front end AFE2-16 is in signal connection with a front end mixing circuit 2-17 and a serial Flash2-14, the front end mixing circuit 2-17 is in signal connection with the analog front end AFE2-16, the serial Flash2-15 and the digital processing module, The signal output ports 2-11 are in signal connection.

After connection according to the connection diagram of fig. 1, a terminal receiver and a front-end transmitter respectively supply power to DC12V, a Flash chip works, a system starts self-checking, after the self-checking is completed, the whole system runs according to a set program, firstly, handshaking is performed, two modems negotiate with each other to establish communication connection, the highest rate adopted by communication is determined, then training is performed, the local side device and the terminal device perform initialization sequence exchange, then adaptive rate adjustment is performed, and finally, the communication line is successfully connected. The network signal passes through a network transformer and a switch chip, then the digital signal is modulated into an analog signal by a digital chip, the analog signal is further processed by an analog front end AFE, and then the analog signal is amplified and filtered by a front end hybrid circuit, so that the interference between the equipment and the two core wires is isolated. The analog signal is transmitted to a far-end transmitter through two core wires, firstly, the analog signal is filtered and interfered by a front-end hybrid circuit and is restored, the analog signal is further processed through an analog front-end AFE, then the analog signal is demodulated into a digital signal through a digital chip (VSP210D), and the digital signal is transmitted to a terminal device through a switch chip, a network transformer and a network port.

The front-end hybrid circuit functions mainly include filtering, line driver (sending modulated signals onto twisted pair wires without distortion and meeting the required output power).

The above description is only exemplary of the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the present invention.

Claims

1. The super-long-distance DSL four-network-port relay module with the cascade function is characterized by comprising a front-end transmitter (1) and a terminal receiver (2) which are used in pairs and have the same structure;

the front-end transmitter (1) comprises a first signal input port (1-8) and a first signal output port (1-11), wherein the first signal input port (1-8) and the first signal output port (1-11) are sequentially connected with one another: the system comprises a first front-end hybrid circuit (1-7), a first analog front-end AFE (1-6), a first serial Flash (1-5), a first SDRAM (1-4), a first digital processing module (1-3), a first switch chip (1-9), a first network transformer (1-10), a second digital processing module (1-13), a second SDRAM (1-14), a second serial Flash (1-15), a second analog front-end AFE (1-16) and a second front-end hybrid circuit (1-17).

2. The tandem-capable ultra-long-distance DSL four-port relay module special for coal mines according to claim 1, wherein the terminal receiver (2) comprises a second signal input port (2-8) and a second signal output port (2-11), and the second signal input port (2-8) and the second signal output port (2-11) are provided with: a third front end hybrid circuit (2-7), a third analog front end AFE (2-6), a third serial Flash (2-5), a third SDRAM (2-4), a third digital processing module (2-3), a second switch chip (2-9), a second network transformer (2-10), a fourth digital processing module (2-13), a fourth SDRAM (2-14), a fourth serial Flash (2-15), a fourth analog front end AFE (2-16) and a fourth front end hybrid circuit (2-17).

3. The tandem-function ultra-long-distance DSL four-port relay module for coal mines according to claim 1, wherein the front-end transmitter (1) is internally provided with a first power module (1-12) for supplying power to the second digital processing module (1-13), a second SDRAM (1-14), a second serial Flash (1-15), a second analog front-end AFE (1-16) and a second front-end hybrid circuit (1-17).

4. The ultra-long distance DSL four-port relay module with the cascade function special for the coal mine according to claim 3, wherein the front end transmitter (1) is internally provided with a second power module (1-2) for supplying power to a first front end hybrid circuit (1-7), a first analog front end AFE (1-6), a first serial Flash (1-5), a first SDRAM (1-4) and a first digital processing module (1-3).

5. The ultra-long distance DSL four-port relay module with the cascade function special for coal mines as claimed in claim 1, characterized in that the terminal receiver (2) is internally provided with a third power module (2-12) for supplying power to a fourth digital processing module (2-13), a fourth SDRAM (2-14), a fourth serial Flash (2-15), a fourth analog front end AFE (2-16) and a fourth front end hybrid circuit (2-17).

6. The ultra-long distance DSL four-port relay module with the cascade function special for the coal mine according to claim 5, characterized in that a fourth power module (2-2) for supplying power to a third front end hybrid circuit (2-7), a third analog front end AFE (2-6), a third serial Flash (2-5), a third SDRAM (2-4) and a third digital processing module (2-3) is arranged in the terminal receiver (2).

7. The tandem functional ultra-long distance DSL four-port repeater module for coal mine use according to claim 1, wherein the front-end transmitter is in signal connection with the terminal receiver (2) via twisted pair, two-core or coaxial cable.