CN111305830A - Cable logging system based on high-temperature and high-speed ADSL technology - Google Patents
Cable logging system based on high-temperature and high-speed ADSL technology Download PDFInfo
- Publication number
- CN111305830A CN111305830A CN202010230476.XA CN202010230476A CN111305830A CN 111305830 A CN111305830 A CN 111305830A CN 202010230476 A CN202010230476 A CN 202010230476A CN 111305830 A CN111305830 A CN 111305830A
- Authority
- CN
- China
- Prior art keywords
- ground
- modem
- underground
- network
- system based
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 101150012579 ADSL gene Proteins 0.000 title claims abstract description 16
- 102100020775 Adenylosuccinate lyase Human genes 0.000 title claims abstract description 16
- 108700040193 Adenylosuccinate lyases Proteins 0.000 title claims abstract description 16
- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 238000004891 communication Methods 0.000 claims description 49
- 239000000523 sample Substances 0.000 claims description 9
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 25
- 230000005540 biological transmission Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000012790 confirmation Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Signal Processing (AREA)
- Remote Sensing (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Telephonic Communication Services (AREA)
Abstract
The invention discloses a cable logging system based on a high-temperature and high-speed ADSL technology, and particularly relates to the technical field of cable logging, which comprises a bottom surface main system and an underground subsystem, wherein the ground main system comprises a host, ground modules, a switch and a ground MODEM, the host, the ground modules and the ground MODEM are connected through the switch, the underground subsystem comprises the underground MODEM, a switching chip and a network interface, and the underground MODEM is connected with the network interface through the switching chip. The invention can reduce conflict and avoid data of each port from entering the next stage by communicating each part of the ground main system and the underground subsystem through the exchange network, and can improve bandwidth, so that each network node can independently share the whole bandwidth, and the interfaces of each part of the instrument are clear and have strong independence, and update and upgrade can be respectively carried out without mutual influence.
Description
Technical Field
The invention relates to the technical field of cable logging, in particular to a cable logging system based on a high-temperature and high-speed ADSL technology.
Background
Early logging instrument signals all used analog quantities and pulse quantities to upload. Due to the fact that a plurality of cable cores are occupied, distortion and distortion exist, requirements of logging operation cannot be met with the progress of a logging method and the increase of measuring instruments, and digital transmission of logging data occurs at the same time. Haributton adopts the Ethernet technology to construct a unified communication system among the underground instrument, the ground module and the host machine, and does not adopt a data communication system which is separated and adopts interface conversion in the past.
Due to the fact that resources of a CPU system of the downhole instrument are limited, a complete TCP/IP protocol cannot be operated, the TCP/IP protocol is required to be cut down, and the reduction of operation programs is also beneficial to reducing power consumption. The logging communication system is generally divided into two parts, namely cable communication and a downhole bus, and the cable communication becomes a bottleneck of the whole data channel due to the narrow frequency band problem caused by the length of the cable.
However, there are some unsatisfactory places in the current cable transmission of DSL. For example, if there is a disconnection phenomenon, the network communication is started when the power voltage is low, the deep alignment is affected by the time setting service, and the like, the communication protocol works unstably.
Disclosure of Invention
In order to overcome the above defects in the prior art, embodiments of the present invention provide a cable logging system based on high-temperature and high-speed ADSL technology, and the technical problems to be solved by the present invention are: how to ensure the communication system, the communication protocol works stably and reliably.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a cable logging system based on high-temperature high-speed ADSL technique, includes bottom surface main system and sub-system in the pit, ground main system is including host computer, each module in ground, switch and ground MODEM, be connected through the switch between host computer, each module in ground and the ground MODEM, sub-system in the pit is including MODEM, switching chip and network interface in the pit, be connected through switching chip between MODEM in the pit and the network interface, network interface's link is connected with the acquisition unit, the link of acquisition unit is connected with the probe, all communicate through switched Ethernet between host computer, each module in ground, switch and the ground MODEM of ground main system and between the sub-system in the pit MODEM, switching chip, network interface, acquisition unit and the probe.
The implementation mode is as follows: when the underground Digital Subscriber Line (DSL) modem is used, the underground Ethernet and the underground DSL modem can be in seamless connection, an underground instrument transmits data to the underground DSL modem through an Ethernet bus, the modulated data transmits signals to the ground through a logging cable, then the ground DSL modem demodulates the signals and transmits the demodulated signals to the ground Ethernet local area network, and similarly, a ground issuing command transmits the data to the ground DSL modem through the ground Ethernet local area network, the modulated signals are transmitted to the underground through the logging cable, then the underground DSL modem demodulates the signals and transmits the demodulated signals to the underground Ethernet local area network, and finally the target IP is achieved to control the corresponding instrument to execute the command.
In a preferred embodiment, the communication between the surface MODEM and the downhole MODEM is via a cable.
In a preferred embodiment, the downhole subsystem comprises a plurality of downhole subsystems, and the plurality of downhole subsystems are communicated with each other through twisted-pair lines.
In a preferred embodiment, the switched ethernet for communication among the host, the modules, the switch and the surface MODEM of the surface main system and among the downhole MODEM, the switch chip, the network interface, the acquisition unit and the probe of the downhole sub system is a 10BASE-T switched network.
In a preferred embodiment, the downhole subsystem further comprises a network communication board and other instruments, and the network communication board is connected with the other instruments through a switching chip.
In a preferred embodiment, the network communication board comprises three ports, wherein one port is connected with the upper end instrument, one port is connected with the lower end instrument, the third port is connected with the local network processor, and the communication rate is 10 MBPS.
In a preferred embodiment, the local network processor connected to the third port of the network communication board communicates with the acquisition unit through the SPI interface, and the communication rate is 1MBPS, and the local network processor is configured to encapsulate the acquired data plus the time information into an IP packet, and send the IP packet to the ground or the NTGR through the switch chip.
In a preferred embodiment, the network interface boards of the other instruments have the same specification, and are configured to query the acquisition unit through the SPI during power-on initialization to obtain current instrument information, thereby determining the own IP address and communication format, and then upload acquired data according to a predetermined timing sequence.
The invention has the technical effects and advantages that:
1. according to the invention, all parts of the ground main system and the underground subsystem are communicated through the switching network, so that on one hand, conflicts can be reduced, the data conflicts of all ports are isolated and processed by the switch and do not enter the next stage, and the problem that extra resources are required to be used for conflict processing in a bus network (such as a coaxial cable network) is solved; on the other hand, the bandwidth can be improved, so that each network node can independently share the whole bandwidth, for example, A, B, C and D can simultaneously communicate, and the problem that only one pair of nodes can communicate at the same time and each node shares the bandwidth in a bus network is solved;
2. the invention can make the interfaces of all parts of the instrument clear and have strong independence by communicating all parts of the ground main system and the underground subsystem through the switched network, update and upgrade can be respectively carried out without mutual influence, and simultaneously, the instrument is conveniently hung in other series of logging systems, and only the communication board needs to be replaced.
Drawings
Fig. 1 is a block diagram of a communication system of the present invention.
FIG. 2 is a block diagram of a downhole tool communication interface board of the present invention.
Fig. 3 is a diagram of an ethernet frame format according to the present invention.
FIG. 4 is a diagram illustrating the inter-layer relationship of the network communication protocol according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a cable logging system based on a high-temperature high-speed ADSL technology, which comprises a bottom surface main system and an underground subsystem, wherein the ground main system comprises a host, ground modules, a switch and a ground MODEM, the host, the ground modules and the ground MODEM are connected through the switch, the underground subsystem comprises an underground MODEM, a switching chip and a network interface, the underground MODEM and the network interface are connected through the switching chip, the connecting end of the network interface is connected with an acquisition unit, the connecting end of the acquisition unit is connected with a probe, and the host, the ground modules, the switch and the ground MODEM of the ground main system and the underground MODEM, the switching chip, the network interface, the acquisition unit and the probe of the underground subsystem are communicated through a switched Ethernet.
And the ground MODEM and the underground MODEM are communicated through a cable.
The downhole subsystems comprise a plurality of downhole subsystems, and the downhole subsystems are communicated through twisted-pair lines.
The switched Ethernet for communication among the host, each module on the ground, the switch and the ground MODEM of the ground main system and among the underground MODEM, the switch chip, the network interface, the acquisition unit and the probe of the underground subsystem is a 10BASE-T switched network.
The underground subsystem also comprises a network communication board and other instruments, and the network communication board is connected with the other instruments through exchange chips.
The network communication board comprises three ports, wherein one port is connected with an upper end instrument, one port is connected with a lower end instrument, the third port is connected with a local network processor, and the communication speed is 10 MBPS.
The local network processor connected with the third port of the network communication board communicates with the acquisition unit through the SPI interface, the communication rate is 1MBPS, the local network processor is used for packaging the acquired data and time information into an IP packet, and the IP packet is sent to the ground or NTGR through the exchange chip.
The network interface boards of other instruments have the same specification and are used for inquiring the acquisition unit through the SPI to acquire the current instrument information during power-on initialization, thereby determining the IP address and the communication format of the acquisition unit and then uploading the acquired data according to the specified time sequence.
As shown in fig. 1 to 4, the embodiment specifically is: in the practical use process, the underground Ethernet and the underground DSL modem can be seamlessly connected, the underground instrument transmits data to the underground DSL modem through an Ethernet bus, the modulated data is transmitted to the ground through a logging cable, then the ground DSL modem demodulates the signal and transmits the demodulated signal to the ground Ethernet local area network, and similarly, the ground sends a command to transmit the data to the ground DSL modem through the ground Ethernet local area network, the modulated signal is transmitted to the underground through the logging cable, then the underground DSL modem demodulates the signal and transmits the demodulated signal to the underground Ethernet local area network, and finally the target IP is achieved to control the corresponding instrument execution instruction. Therefore, each network unit needs to completely unify respective time, a time server is set for the time server, all the network units take the time on the time server as a standard, and the precision requirement is 1ms, in the communication system, the main time delay is between the ground DSL and the underground DSL, and the delay size of the time delay is different according to the difference of data transmission quantity, so that the time of the ground local area network and the time of the underground local area network need to be aligned (namely, the underground gateway board can communicate with the ground time server every fixed period to obtain the time information of the ground time server, then the time of the underground gateway board is adjusted through a reasonable algorithm to achieve the time unification of the time of the underground gateway board and the time of the time server, and simultaneously, the time of the underground network unit and the time of the ground server are broadcasted to be synchronous);
furthermore, the invention takes network communication as the core, the ground equipment is connected through a network switch, a gateway in the underground telemetering short section is responsible for processing the communication between the data of underground instruments and the ground, the two are seamlessly connected through ADSL technology to form a unified local area network, each ground equipment and each underground instrument are network nodes with independent IP addresses, any node can be communicated through a TCP/IP protocol (namely the whole system uses unified standard and protocol for communication), and the network communication comprises a plurality of complex protocols, wherein the most basic is the TCP/IP protocol, the TCP/IP protocols adopt a layered structure to realize the data communication between the nodes with different software hardware configurations, because the early computer communication modes are various, the adopted software and hardware are five-eight doors, and the invention is suitable for various different types and application software, the protocol adopts the following steps: dividing a series of links of a hardware network interface, data encapsulation (network layer), transceiving control and program application into different levels, defining functions of each layer and an interlayer calling protocol, and forming a standard protocol stack, namely:
first layer, network interface layer: receiving and sending an IP data packet, receiving a physical frame from a network, extracting the data packet and transferring the data packet to the next layer, defining how to use the actual network to transmit data, for example, a 10BASE-T physical layer adopts Manchester code transmission, a check bit is inserted into every four bits, and a receiving end recovers;
second layer, network layer: it is responsible for providing basic data encapsulation transmission function to make each block of data packet reach the destination host, such as IP protocol, and its frame format is shown in the attached figure 3 of the specification;
third layer, transport layer: the method provides data transmission among nodes and communication service among application programs, and has the main functions of data formatting, data confirmation, loss retransmission and the like, such as a Transmission Control Protocol (TCP), a User Datagram Protocol (UDP) and the like;
fourth layer, application layer: data communication between applications, such as simple e-mail transfer (SMTP), File Transfer Protocol (FTP), remote network access protocol (Telnet), etc
The above-mentioned interlayer relations can be seen from fig. 4 of the specification, when an application program at the top layer needs to exchange data with a remote end, it delivers the data stream to the transport layer, and encapsulates it according to TCP (or other transport protocols) protocol, such as data splitting, packing, adding packet numbers and transmission confirmation information, and then delivers the encapsulated data to the network layer, adding sending and receiving addresses, checks and headers by IP protocol, and passing on the physical layer for sending, the physical layer is the actual sending and receiving process of signals on the medium, and it follows a certain modulation and demodulation rule to realize stable signal transmission, and the data receiving is an opposite process, after each layer receives the data packet, it unpacks and removes the encapsulation information of the layer, and completes the corresponding control (for example, the intermediate node of the IP layer will forward data according to the destination address, and will send back confirmation or retransmission information at the TCP layer), and then sends data to the upper layer, until the final application receives the data, some applications may, of course, not require all layers, such as the time protocol (NTP) to have direct access to the transport layer (UDP application).
In summary, any two computers can conveniently communicate with each other through these standardized network protocols. It is characterized in that:
(1) openness, free use, and independence from specific computer hardware and operating systems;
(2) independent of specific network hardware, the system can operate in a local area network and a wide area network, and is more suitable for the Internet;
(3) a uniform network address allocation scheme, so that the whole TCP/IP equipment has a unique address in the network;
(4) standardized higher layer protocols can provide a variety of reliable user services.
The working principle of the invention is as follows:
the invention can be seamlessly connected with the underground DSL modem through the underground Ethernet, the underground instrument transmits data to the underground DSL modem through the Ethernet bus, and transmits signals to the ground through the logging cable after modulation, then the ground DSL modem sends the demodulated signal to the ground Ethernet local area network, and similarly, the ground sends down the order and transmits the data to the ground DSL modem by the ground Ethernet local area network, and then transmits the modulated signal to the underground by the logging cable, then the underground DSL modem demodulates the signal and sends the demodulated signal into an underground Ethernet local area network, finally the target IP is achieved to control the corresponding instrument to execute the instruction, the structure is adopted, the interfaces of all parts of the instrument are clear, the independence is strong, the updating and the upgrading can be respectively carried out without mutual influence, meanwhile, the instrument can be conveniently hung in other series of logging systems, and only the communication board needs to be replaced.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. A cable logging system based on high-temperature and high-speed ADSL technology comprises a bottom surface main system and an underground subsystem, and is characterized in that: the ground main system is including host computer, each module in ground, switch and ground MODEM, be connected through the switch between host computer, each module in ground and the ground MODEM, the sub-system is including DH MODEM, exchange chip and network interface in the pit, be connected through exchanging the chip between underground MODEM and the network interface, the link of network interface is connected with the acquisition unit, the link of acquisition unit is connected with the probe, all communicate through switched Ethernet between host computer, each module in ground, switch and the ground MODEM of ground main system and the underground MODEM, exchange chip, network interface, acquisition unit and the probe of sub-system in the pit.
2. The cable logging system based on high-temperature high-speed ADSL technology of claim 1, wherein: and the ground MODEM and the underground MODEM are communicated through a cable.
3. The cable logging system based on high-temperature high-speed ADSL technology of claim 1, wherein: the downhole subsystems comprise a plurality of downhole subsystems, and the downhole subsystems are communicated through twisted-pair lines.
4. The cable logging system based on high-temperature high-speed ADSL technology of claim 1, wherein: the switched Ethernet for communication among the host, each module on the ground, the switch and the ground MODEM of the ground main system and among the underground MODEM, the switch chip, the network interface, the acquisition unit and the probe of the underground subsystem is a 10BASE-T switched network.
5. The cable logging system based on high-temperature high-speed ADSL technology of claim 1, wherein: the underground subsystem also comprises a network communication board and other instruments, and the network communication board is connected with the other instruments through exchange chips.
6. A cable logging system based on high-temperature high-speed ADSL technology according to claim 5, characterized in that: the network communication board comprises three ports, wherein one port is connected with an upper end instrument, one port is connected with a lower end instrument, the third port is connected with a local network processor, and the communication speed is 10 MBPS.
7. The cable logging system based on high-temperature high-speed ADSL technology of claim 6, wherein: the local network processor connected with the third port of the network communication board communicates with the acquisition unit through the SPI interface, the communication rate is 1MBPS, the local network processor is used for packaging the acquired data and time information into an IP packet, and the IP packet is sent to the ground or NTGR through the exchange chip.
8. A cable logging system based on high-temperature high-speed ADSL technology according to claim 5, characterized in that: the network interface boards of other instruments have the same specification and are used for inquiring the acquisition unit through the SPI to acquire the current instrument information during power-on initialization, thereby determining the IP address and the communication format of the acquisition unit and then uploading the acquired data according to the specified time sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010230476.XA CN111305830A (en) | 2020-03-27 | 2020-03-27 | Cable logging system based on high-temperature and high-speed ADSL technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010230476.XA CN111305830A (en) | 2020-03-27 | 2020-03-27 | Cable logging system based on high-temperature and high-speed ADSL technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111305830A true CN111305830A (en) | 2020-06-19 |
Family
ID=71155370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010230476.XA Pending CN111305830A (en) | 2020-03-27 | 2020-03-27 | Cable logging system based on high-temperature and high-speed ADSL technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111305830A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113421415A (en) * | 2021-06-18 | 2021-09-21 | 中国科学技术大学 | Deep-seismic exploration underground high-speed data transmission system and method based on Ethernet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651846A (en) * | 2009-09-16 | 2010-02-17 | 中兴通讯股份有限公司 | Signaling acquisition device and method |
| CN102094635A (en) * | 2010-12-06 | 2011-06-15 | 北京环鼎科技有限责任公司 | Logging data transmission system and transmission method thereof |
| CN203978425U (en) * | 2014-05-21 | 2014-12-03 | 青岛杰瑞自动化有限公司 | A kind of wireline logging HRT high-rate telemetry communication apparatus |
| CN212406712U (en) * | 2020-03-27 | 2021-01-26 | 北京环鼎科技有限责任公司 | Cable logging system based on high-temperature and high-speed ADSL technology |
-
2020
- 2020-03-27 CN CN202010230476.XA patent/CN111305830A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651846A (en) * | 2009-09-16 | 2010-02-17 | 中兴通讯股份有限公司 | Signaling acquisition device and method |
| CN102094635A (en) * | 2010-12-06 | 2011-06-15 | 北京环鼎科技有限责任公司 | Logging data transmission system and transmission method thereof |
| CN203978425U (en) * | 2014-05-21 | 2014-12-03 | 青岛杰瑞自动化有限公司 | A kind of wireline logging HRT high-rate telemetry communication apparatus |
| CN212406712U (en) * | 2020-03-27 | 2021-01-26 | 北京环鼎科技有限责任公司 | Cable logging system based on high-temperature and high-speed ADSL technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113421415A (en) * | 2021-06-18 | 2021-09-21 | 中国科学技术大学 | Deep-seismic exploration underground high-speed data transmission system and method based on Ethernet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6662254B1 (en) | System architecture | |
| US5659684A (en) | Methods and apparatus for interconnecting personal computers (PCs) and local area networks (LANs) using packet protocols transmitted over a digital data service (DDS) | |
| US5742602A (en) | Adaptive repeater system | |
| EP2003823B1 (en) | Autonegotiation over an interface for which no autonegotiation standard exists | |
| EP0986217A2 (en) | Network transceiver for steering network data to selected paths based on determined link speeds | |
| US5586273A (en) | HDLC asynchronous to synchronous converter | |
| WO2006059277A2 (en) | A data processing system and a method for synchronizing data traffic | |
| CN106131028B (en) | A kind of data transmission method of Free-port communication gateway | |
| US20030182440A1 (en) | Network processor with high-speed transceiver | |
| CN110868278B (en) | Method for dual-computer redundancy of communication front-end processor of rail transit comprehensive monitoring system | |
| EP2117174A1 (en) | Device with Ethernet switch function and single Ethernet connector | |
| CN212406712U (en) | Cable logging system based on high-temperature and high-speed ADSL technology | |
| CN113938443B (en) | Wireless internet of things protocol switch | |
| CN111305830A (en) | Cable logging system based on high-temperature and high-speed ADSL technology | |
| EP1484874B1 (en) | System for interfacing media access control (MAC) module to small form factor pluggable (SFP) module | |
| US6484213B1 (en) | Adapting networking device for enhancing performance of a hybrid networking system | |
| CN106506306A (en) | A kind of method and apparatus of data-message transmission | |
| CN107959631A (en) | A kind of implementation method of the 6LoWPAN border routers based on OpenWrt operating systems | |
| CN101355589A (en) | Ethernet equipment, Ethernet communication system and method for configuring Ethernet equipment | |
| CN101132337A (en) | 2M loop circuit network system based on E1 transmission | |
| CN201584993U (en) | GFP type 4E1/Ethernet protocol converter | |
| CN107769960A (en) | A kind of BMC management frameworks based on CAN | |
| CN202309757U (en) | S3C6410-based embedded gateway | |
| CN102238163B (en) | IP (Internet Protocol) telecommunication network-oriented multi-protocol message transmitting method | |
| CN102368754A (en) | S3C6410-based embedded gateway |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |