CN106603121A - Long-distance bandwidth/rate-variable high-speed difference communication device and system and communication method - Google Patents
Long-distance bandwidth/rate-variable high-speed difference communication device and system and communication method Download PDFInfo
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- CN106603121A CN106603121A CN201610942724.7A CN201610942724A CN106603121A CN 106603121 A CN106603121 A CN 106603121A CN 201610942724 A CN201610942724 A CN 201610942724A CN 106603121 A CN106603121 A CN 106603121A
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/08—Modifications for reducing interference; Modifications for reducing effects due to line faults ; Receiver end arrangements for detecting or overcoming line faults
- H04L25/085—Arrangements for reducing interference in line transmission systems, e.g. by differential transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Quality & Reliability (AREA)
- Communication Control (AREA)
Abstract
The invention discloses a long-distance bandwidth/rate-variable high-speed difference communication device and system and a communication method. The device comprises an MCU unit. The MCU unit is provided with an Ethernet interface and a plurality of serial interfaces. The Ethernet interface is connected with an Ethernet communication unit. Each serial interface is connected with a difference circuit. The difference circuit realizes conversion of a serial uart signal of the MCU unit into a difference signal and realizes upward and downward communication. The difference circuit comprises a signal conditioning unit and a level switch unit, which are connected mutually. The signal conditioning unit is connected with the serial interfaces; and the level switch unit is connected with an external multi-fiber twisted-pair communication cable. Low-voltage remote power supply is realized by utilizing a common communication cable; high bandwidth and high-rate commutation are achieved; and the upward and downward bandwidth can be changed according to site conditions.
Description
Technical field
The present invention relates to a kind of variable high-speed-differential communicator of remote bandwidth rates, system and communication means.
Background technology
With the high speed development of China's economic construction, the Urban Underground network work of China is carried out energetically.Urban Underground
The security of pipe network is more and more important, and increasing monitoring device spreads all over Urban Underground.Many underground pipe networks do not possess big work(
Rate condition of power supply, no base station signal, no Ethernet, cannot be in this environment using the monitoring device of traditional communication mode
Lower laying.
The content of the invention
The purpose of the present invention is exactly to solve the above problems, there is provided a kind of variable high-speed-differential of remote bandwidth rates leads to
T unit, system and communication means, it realizes that low-voltage remote is powered, leads to a large bandwidth and at a high rate using common communication cable
Letter, and upstream and downstream bandwidth can be changed according to field condition.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of variable high-speed-differential communicator of remote bandwidth rates, including：
MCU units, the MCU units are provided with Ethernet interface and some serial line interfaces, the Ethernet interface and ether
Network Communication unit connects；Each described serial line interface is connected with difference channel；Difference channel is realized the serial of MCU units
Uart signals are converted to differential signal, realize uplink and downlink communication；
The difference channel includes signal condition unit and the level conversion unit being connected to each other, the signal condition unit
It is connected with serial line interface, the level conversion unit is connected with the multicore multiple twin communication cable in the external world.
The MCU units adopt Multi-serial port ARM chips.
The serial line interface is at least four, and the serial line interface is full-duplex serial interface.
The traffic rate of the serial interface is 1200bps/ seconds～11.0592Mbps/ seconds.
The ethernet communication unit is connected with third party device and communicates.
A kind of communication means of the variable high-speed-differential communicator of remote bandwidth rates, comprises the steps：
Step (1)：By multicore multiple twin communication cable Differencing communication device is cascaded to form chain-type topological structure step by step；
Step (2)：The communication of heart yearn and confession electrical connection distribution in multicore multiple twin communication cable；
Step (3)：The optimal selection of traffic rate, to realize high rate communication；
Step (4)：The dynamic regulation of communication bandwidth, to realize the variable of bandwidth.
Step (2) step is：8 cores are used to be communicated between Differencing communication device in multicore multiple twin communication cable, remaining line
Core is used to power, using DC24～48V low-voltage direct remote power feedings, according to carry Differencing communication device quantity and communication away from
From power supply core quantity is different.
The step (3)：As the difference of Differencing communication device distance, distance are nearer, traffic rate is higher, during communication,
The MCU units of Differencing communication device adjust method according to the optimum communication speed of the different Auto-matchings of distance using adaptation rate
Rate, in the case where communication accuracy rate is ensured, realizes the highest traffic rate under different distance.
The step (3)：Differential signal traffic rate scope is 1200bps～11.0592Mbps/S.
The step (3)：Highest communication speed is inversely proportional to communication distance, and the more remote highest communication speed of distance is lower.
The adaptation rate adjusts method, refers to that Differencing communication device is defaulted as baud rate self-adapting pattern.
The adaptation rate adjusts method at 3 points：
(1) receiving terminal：The receiving terminal of Differencing communication device be baud rate self-adapting pattern, receiving terminal automatic detection transmitting terminal
Data rate, and then it is consistent with transmission rate to adjust the receiving velocity of itself.
(2) transmitting terminal：On the transmitting terminal of Differencing communication device A after electricity, first with highest communication speed to the difference for connecting
The receiving terminal of communicator B sends Handshake Protocol, and the receiving terminal of Differencing communication device B is received after Handshake Protocol, will be by highest
Traffic rate replys handshaking information；If Differencing communication device A does not receive the handshaking information of Differencing communication device B replies, poor
Point communicator A will be gradually lowered transmitting terminal baud rate, until receiving the handshaking information of Differencing communication device B replies till.
(3) Differencing communication device A is received after the handshaking information of Differencing communication device B replies, Differencing communication device A and difference
Divide communicator B to carry out some wheel information exchanges, confirm communication stability.If during information exchange, it is found that communication is unstable, then
Differencing communication device A continues to reduce traffic rate, and some wheel information exchanges are carried out again, till communication is stable, so as to reality
Existing adaptation rate regulatory function.
After device A installs electricity, the transmitting terminal of differential signal is with highest communication speed to the device being connected with device A
B sends Handshake Protocol, and device B is received after Handshake Protocol, will reply handshaking information by this baud rate；
If device A is not received by the handshaking information of device B device reply, device A equipment will be gradually lowered baud
Rate, until receiving the handshaking information of device B device reply, and carries out some wheel information exchanges, confirms communication stability, realizes
Adaptation rate regulatory function.
The step (4)：Differencing communication device possesses each two-way of uplink and downlink difference channel；
The step (4)：In communication process, the MCU unit judges in Jing Differencing communication devices, if up-downgoing data volume
Unanimously, then it is assumed that situation of the upstream and downstream bandwidth in balance, operating Differencing communication appliance arrangement acquiescence keeps up with
The each two-way of row Differencing communication passage；
The step (4)：In communication process, the MCU unit judges in Jing Differencing communication devices, if up-downgoing data volume
Deviation is more than given threshold, then it is assumed that upstream and downstream bandwidth in the case of unbalanced, the difference of MCU unit switched differential circuits
Sense, realizes that all the way up three tunnel is descending or the up pattern descending all the way in three tunnels, realizes that Bandwidth Dynamic is adjusted.
Using a kind of system of the variable high-speed-differential communicator of remote bandwidth rates, by multicore multiple twin communication cable
Differencing communication device is cascaded step by step to form chain-type topological structure, heart yearn is respectively used to communicate and supplies in multicore multiple twin communication cable
Electricity；Differencing communication device adjusts method according to the logical of the different Auto-matchings optimum of Differencing communication device distance using adaptation rate
Letter speed.
Beneficial effects of the present invention：
1. power supply and the one that communicates are realized, low-voltage remote is powered, safe and reliable.
2. the communication mode of adaptive-bandwidth, flexibility height, can meet the application mode of different demands.
The communication mode of rate-compatible, can meet the data communication needs under different distance.Simultaneously according to amount of communication data
Number, select different speed, can adjust euclidean distance between node pair, improve number of nodes, reduce engineering cost.
Description of the drawings
Fig. 1 is the hardware block diagram of Differencing communication device of the present invention；
Fig. 2 is the Differencing communication method flow diagram of the present invention；
Wherein, the 1, first level shifting circuit, 2, second electrical level change-over circuit, the 3, the 3rd level shifting circuit, the 4, the 4th
Level shifting circuit, the 5, first signal conditioning circuit, 6, secondary signal modulate circuit, the 7, the 3rd signal conditioning circuit, the 8, the 4th
Signal conditioning circuit, the 9, first serial line interface, the 10, second serial line interface, the 11, the 3rd serial line interface, the 12, the 4th serial line interface.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described with embodiment.
As shown in figure 1, a kind of variable high-speed-differential communicator of remote bandwidth rates, including MCU units, the MCU
Unit is respectively equipped with the first serial line interface 9, the second serial line interface 10, the 3rd serial line interface 11, the 4th serial line interface 12 and ether
Network interface, the Ethernet interface is connected with ethernet communication unit, and the difference channel of first serial line interface 9 and first connects
Connect；Second serial line interface 10 is connected with the second difference channel；3rd serial line interface 11 is connected with the 3rd difference channel；
4th serial line interface 12 is connected with the 4th difference channel；Difference channel is realized changing the serial uart signals of MCU units
For differential signal, the uplink and downlink communication of Differencing communication device is realized；
First difference channel includes the first signal condition unit 5 and the first level conversion unit 1 being connected to each other, institute
State the first signal condition unit 5 to be connected with the first serial line interface 9, the multicore multiple twin in first level conversion unit 1 and the external world
Communication cable connects.
Second difference channel includes secondary signal conditioning unit 6 and the second electrical level converting unit 2 being connected to each other, institute
State secondary signal conditioning unit 6 to be connected with the second serial line interface 10, the multicore multiple twin in the second electrical level converting unit and the external world
Communication cable connects.
3rd difference channel includes the 3rd signal condition unit 7 and the 3rd level conversion unit 3 being connected to each other, institute
State the 3rd signal condition unit 7 to be connected with the 3rd serial line interface 11, the multicore multiple twin in the 3rd level conversion unit and the external world
Communication cable connects.
4th difference channel includes the 4th signal condition unit 8 and the 4th level conversion unit 4 being connected to each other, institute
State the 4th signal condition unit 8 to be connected with the 4th serial line interface 12, the multicore multiple twin in the 4th level conversion unit and the external world
Communication cable connects.
Wherein MCU units adopt Multi-serial port ARM chips.Differencing communication takes 4 full duplex serial ports, each serial communication speed
Rate is 1200bps/ seconds～11.0592Mbps/ seconds.MCU units with 4 road serial line interfaces.
Wherein signal condition unit is 4 groups of consistent units of circuit with level conversion unit, it is possible to achieve by MCU units
Serial uart signals are converted to differential signal, realize the uplink and downlink communication of Differencing communication device.
Wherein ethernet communication unit, it is possible to achieve the connection and communication of Differencing communication device and third party device.
As described in Figure 2, flow process is as follows：
Device is cascaded：Between the remote variable high-speed-differential communicator of bandwidth rates by multicore multiple twin communication cable by
Level cascade forms chain-type topological structure.
Cable distributes：Connection cable between the variable high-speed-differential communicator of remote bandwidth rates is multicore cable,
In general enforcement, 8 cores are used to be communicated between Differencing communication device in multicore multiple twin communication cable, and remaining cable is used for as system confession
Electricity, using low-voltage direct remote power feeding (DC24～48V), according to carry Differencing communication device quantity and communication distance, power supply
Core quantity is different.
The optimization of traffic rate：After device A installs electricity, the transmitting terminal of differential signal is connected with flank speed to it
Device B send Handshake Protocol, after device B is received, handshaking information will be replied by this baud rate.If being not received by dress
The return information of B device is put, then device A equipment will be gradually lowered baud rate, the return information until receiving device B device,
And many wheel information exchanges are carried out, and confirm communication stability, realize adaptation rate regulatory function.With Differencing communication device distance
Difference, distance it is nearer, traffic rate is higher, for example：During 100 meters of spacing, traffic rate is up to the 10Mb/ seconds；1000 meters of spacing
When, traffic rate is up to 100Kb/ seconds etc..During communication, the MCU units of Differencing communication device can be according to different automatic of distance
With optimum traffic rate, in the situation for ensureing communication accuracy rate most fast traffic rate under the distance is realized.Differential signal
Traffic rate scope (1200bps～11.0592Mbps/S).
The optimization of communication bandwidth：Differencing communication device possesses each 2 tunnel of uplink and downlink Differencing communication passage, in up-downgoing band
In the case of balanced bandwidth, operating Differencing communication appliance arrangement acquiescence keeps each 2 tunnel of uplink and downlink Differencing communication passage；
In the case of upstream and downstream bandwidth is unbalanced, the MCU units in Differencing communication device can automatic decision, and switched differential signal side
To, the pattern that up 3 tunnel in 1 tunnel is descending or up 1 tunnel in 3 tunnels is descending is capable of achieving, realize that Bandwidth Dynamic is adjusted.
For example：A kind of situation for often occurring in actual applications：Downlink data is to patrol and examine information, control information etc.,
Data volume very little, data volume per second is only a few K bytes；And upstream data is video or pictorial information etc., data volume is larger, often
1M bytes are likely to be breached in second.This is exactly a kind of unbalanced application of typical bandwidth.
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not to present invention protection model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need the various modifications made by paying creative work or deformation still within protection scope of the present invention.
Claims (10)
1. a kind of variable high-speed-differential communicator of remote bandwidth rates, is characterized in that, including：
MCU units, the MCU units are provided with Ethernet interface and some serial line interfaces, the Ethernet interface and ether Netcom
Letter unit connection；Each described serial line interface is connected with difference channel；Difference channel is realized believing the serial uart of MCU units
Number differential signal is converted to, realizes uplink and downlink communication；
The difference channel includes signal condition unit and the level conversion unit being connected to each other, the signal condition unit and string
Line interface connects, and the level conversion unit is connected with the multicore multiple twin communication cable in the external world.
2. a kind of variable high-speed-differential communicator of remote bandwidth rates as claimed in claim 1, is characterized in that,
The serial line interface is at least four, and the serial line interface is full-duplex serial interface.
3. the communication means of Differencing communication device as claimed in claim 1, is characterized in that, comprise the steps：
Step (1)：By multicore multiple twin communication cable Differencing communication device is cascaded to form chain-type topological structure step by step；
Step (2)：The communication of heart yearn and confession electrical connection distribution in multicore multiple twin communication cable；
Step (3)：The optimal selection of traffic rate, to realize high rate communication；
Step (4)：The dynamic regulation of communication bandwidth, to realize the variable of bandwidth.
4. the communication means of Differencing communication device as claimed in claim 3, is characterized in that,
Step (2) step is：8 cores are used to be communicated between Differencing communication device in multicore multiple twin communication cable, and remaining core is used
In power supply, using DC24～48V low-voltage direct remote power feedings, according to carry Differencing communication device quantity and communication distance, supply
Wire core quantity is different.
5. the communication means of Differencing communication device as claimed in claim 3, is characterized in that,
The step (3)：As the difference of Differencing communication device distance, distance are nearer, traffic rate is higher, during communication, difference
The MCU units of communicator adjust traffic rate of the method according to the different Auto-matchings optimum of distance using adaptation rate,
In the case of ensureing communication accuracy rate, the highest traffic rate under setpoint distance is realized.
6. the communication means of Differencing communication device as claimed in claim 3, is characterized in that,
The step (3)：Highest communication speed is inversely proportional to communication distance, and the more remote highest communication speed of distance is lower.
7. the communication means of Differencing communication device as claimed in claim 5, is characterized in that,
The adaptation rate adjusts method, refers to that Differencing communication device is defaulted as baud rate self-adapting pattern.
8. the communication means of Differencing communication device as claimed in claim 5, is characterized in that,
The adaptation rate adjusts method at 3 points：
(1) receiving terminal：The receiving terminal of Differencing communication device be baud rate self-adapting pattern, the number of receiving terminal automatic detection transmitting terminal
According to speed, and then it is consistent with transmission rate to adjust the receiving velocity of itself.
(2) transmitting terminal：On the transmitting terminal of Differencing communication device A after electricity, first with highest communication speed to the Differencing communication for connecting
The receiving terminal of device B sends Handshake Protocol, and the receiving terminal of Differencing communication device B is received after Handshake Protocol, will be by highest communication
Speed replys handshaking information；If Differencing communication device A does not receive the handshaking information of Differencing communication device B replies, difference is led to
T unit A will be gradually lowered transmitting terminal baud rate, until receive Differencing communication device B reply handshaking information till.
(3) Differencing communication device A is received after the handshaking information of Differencing communication device B replies, and Differencing communication device A leads to difference
T unit B carries out some wheel information exchanges, confirms communication stability.If during information exchange, it is found that communication is unstable, then difference
Communicator A continues to reduce traffic rate, and some wheel information exchanges are carried out again, till communication is stable, so as to realize certainly
Adapt to rate adaptation function.
9. the communication means of Differencing communication device as claimed in claim 5, is characterized in that,
The step (4)：Differencing communication device possesses each two-way of uplink and downlink difference channel；
The step (4)：In communication process, the MCU unit judges in Jing Differencing communication devices, if up-downgoing data volume one
Cause, then it is assumed that situation of the upstream and downstream bandwidth in balance, operating Differencing communication appliance arrangement acquiescence keeps uplink and downlink
The each two-way of Differencing communication passage；
The step (4)：In communication process, the MCU unit judges in Jing Differencing communication devices, if up-downgoing data volume deviation
More than given threshold, then it is assumed that upstream and downstream bandwidth in the case of unbalanced, the differential signal of MCU unit switched differential circuits
Direction, realizes that all the way up three tunnel is descending or the up pattern descending all the way in three tunnels, realizes that Bandwidth Dynamic is adjusted.
10., using a kind of system of the variable high-speed-differential communicator of remote bandwidth rates as claimed in claim 1, it is special
Levying is, step by step cascades Differencing communication device to form chain-type topological structure by multicore multiple twin communication cable, the communication of multicore multiple twin
Heart yearn is respectively used to communicate and powers in cable；Differencing communication device adjusts method according to Differencing communication device using adaptation rate
The optimum traffic rate of the different Auto-matchings of distance.
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Cited By (4)
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| CN108169620A (en) * | 2017-11-30 | 2018-06-15 | 国网北京市电力公司 | Fault location system, method and apparatus based on time synchronization |
| CN108768463A (en) * | 2018-08-17 | 2018-11-06 | 苏州路易威森电梯有限公司 | A kind of differential communication and power-line carrier network communication system |
| CN110381596A (en) * | 2019-09-02 | 2019-10-25 | 北京百佑科技有限公司 | Point to point wireless communication control method, device, terminal and readable storage medium storing program for executing |
| CN111162815A (en) * | 2019-12-24 | 2020-05-15 | 深圳市优必选科技股份有限公司 | Full-duplex communication circuit and full-duplex communication device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108169620A (en) * | 2017-11-30 | 2018-06-15 | 国网北京市电力公司 | Fault location system, method and apparatus based on time synchronization |
| CN108768463A (en) * | 2018-08-17 | 2018-11-06 | 苏州路易威森电梯有限公司 | A kind of differential communication and power-line carrier network communication system |
| CN110381596A (en) * | 2019-09-02 | 2019-10-25 | 北京百佑科技有限公司 | Point to point wireless communication control method, device, terminal and readable storage medium storing program for executing |
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| CN111162815A (en) * | 2019-12-24 | 2020-05-15 | 深圳市优必选科技股份有限公司 | Full-duplex communication circuit and full-duplex communication device |
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