CN102970059A - EOC (Ethernet over coax) self-loop detection system and method - Google Patents
EOC (Ethernet over coax) self-loop detection system and method Download PDFInfo
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- CN102970059A CN102970059A CN2012105685716A CN201210568571A CN102970059A CN 102970059 A CN102970059 A CN 102970059A CN 2012105685716 A CN2012105685716 A CN 2012105685716A CN 201210568571 A CN201210568571 A CN 201210568571A CN 102970059 A CN102970059 A CN 102970059A
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Abstract
The invention relates to a self-loop detection system and method, and in particular relates to an EOC (Ethernet over coax) self-loop detection system and method. The EOC self-loop detection system comprises a head end device and a terminal module, wherein the head end device and the terminal module are communicated, the terminal module comprises a protocol device, an exchange device and a detection controller, the head end device is connected with the exchange device through the protocol device, and the detection controller is respectively connected with the protocol device and the exchange device; therefore, the terminal module is provided with a self-loop detection control circuit so that the communication of an EOC terminal generating a self-loop situation with an EOC head end can be immediately interrupted when the terminal module generates the self-loop situation, and the influence on the communication connection of the EOC terminals of other users with the EOC head end generated due to paralysis of the EOC head end is avoided; and meanwhile, information of the EOC terminal generating the self-loop situation can be precisely transmitted to a system maintenance system so that the maintenance of the system is facilitated.
Description
Technical field
The present invention relates to a kind ofly from encircling detection system, relate in particular to a kind of EOC from encircling detection system and method.
Background technology
The ether data communication device is crossed coaxial cable transmission (Ethernet over COAX, be called for short EOC) system, in coaxial cable, to carry out the transmission of Ethernet data signal, be about to ethernet signal through in coaxial cable, carrying out transfer of data after the ovennodulation, its frequency does not take the cable TV frequency band, can and the cable TV frequency coexistence, owing to it has simply, stablizes, safety, low cost and other advantages, in the bidirectional network reconstruction technology for making, be widely used.
The EOC system mainly is comprised of EOC head end and user EOC terminal system, be specially: the EOC headend is behind the signal and the data-signal from the Internet that receive from cable TV, merge to data signal modulation and with FDM mode and cable TV signal, send to each user by coaxial network again, user EOC terminal is then after receiving signal, data-signal is separated with cable TV signal and data-signal is carried out demodulation, to send the user data terminal module to; Wherein, when user data terminal and EOC head end carried out exchanges data, the upward signal of data terminal needed enter coaxial network and deliver to the EOC headend after the modulation of user EOC terminal.
But, as user during in misoperation EOC terminal, may cause from encircling phenomenon and produce, and the EOC head end is when receiving the broadcast singal of EOC terminal, can cause broadcast storm, cause link congestion, be i.e. EOC head end network paralysis, so that other user EOC terminals can't communicate with the EOC head end, cause serious communication failure.
Summary of the invention
For the problems referred to above that exist in the existing EOC system, now provide a kind of EOC from encircling detection system and method, not only can in time detect user EOC terminal occurs from encircling phenomenon, can also cut off timely the EOC terminal that occurs from encircling phenomenon is connected with the data of EOC head end, to avoid having influence on the communication connection of other user EOC terminals and above-mentioned EOC head end, to occur simultaneously from the EOC end message system maintenance system that transfers to promptly and accurately that encircles phenomenon, so that the maintenance of system.
The objective of the invention is to be achieved through the following technical solutions:
The invention discloses a kind of EOC from encircling detection system, described EOC system comprises headend and terminal module, described terminal module comprises protocol apparatus and switch, described headend is connected with described switch by described protocol apparatus, be provided with on the described switch from encircling the detection signal output, wherein, described terminal module also comprises a detection control apparatus;
Be provided with on the described detection control apparatus from encircling detection signal input and control signal output, described from encircle the detection signal input with described oneself encircle the detection signal output and be connected, described control signal output respectively with described switch be connected protocol apparatus and be connected.
Above-mentioned EOC is from encircling detection system, wherein, described detection control apparatus comprises the chip with triple gate function, describedly be arranged on the described chip from encircling the detection signal input, the signal output part of described chip respectively with described switch be connected the control input end of protocol apparatus and be connected.
Above-mentioned EOC is from encircling detection system, and wherein, described switch detects when encircling detection signal, and is described from encircling the detection signal output square wave in output 800ms cycle.
Above-mentioned EOC wherein, also comprises reporting module and system maintaining module from encircling detection system, described reporting module respectively with described switch be connected system maintaining module and be connected.
Above-mentioned EOC system wherein, occurs when encircling phenomenon when described switch detects described terminal module from encircling detection method, and described reporting module will occur to be uploaded to described system maintaining module from the terminal module information of encircling phenomenon.
The invention also discloses a kind of EOC system from encircling detection method, wherein, be applied to such as EOC as described in the above-mentioned any one may further comprise the steps from encircling detection system:
Described switch sense terminals module status, and the output corresponding detection signals is to described detection control apparatus;
Described detection control apparatus is exported respectively according to the detection signal that receives and is controlled signal to accordingly described switch and described protocol apparatus;
Described switch and described protocol apparatus move accordingly according to described control signal.
Above-mentioned EOC system wherein, occurs when encircling phenomenon when described switch detects described terminal module from encircling detection method, and connection control signal is interrupted in described detection control apparatus output, disconnects described terminal module and is connected with the communication of described headend.
Above-mentioned EOC system is from encircling detection method, wherein, described switch and described protocol apparatus receive described control signal, interrupt described switch and are connected the communication of protocol apparatus and connect, so that described terminal module is connected disconnection with the communication of described headend.
In sum, a kind of EOC of the present invention is from encircling detection system and method, by in terminal module, arranging from encircling detection control apparatus, when terminal module occurs when encircling phenomenon, the EOC terminal that can interrupt timely occuring from encircling phenomenon is connected with the communication of EOC head end, to avoid causing the paralysis of EOC head end, and then have influence on the communication connection of other user EOC terminals and above-mentioned EOC head end, can also be convenient to the maintenance of system from the EOC end message system maintenance system that transfers to promptly and accurately that encircles phenomenon with occurring simultaneously.
Description of drawings
Fig. 1 is that EOC of the present invention is from the structural representation that encircles detection system and method;
Fig. 2 is the electrical block diagram of the embodiment of the invention;
Fig. 3 is that the RTL8306E chip detection to terminal module output signal schematic diagram when encircling phenomenon occurs in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is further described:
Fig. 1 is the structural representation that EOC of the present invention encircles detection system and method certainly, and Fig. 2 is the electrical block diagram of the embodiment of the invention, and Fig. 3 is that the RTL8306E chip detection to terminal module output signal schematic diagram when encircling phenomenon occurs in the embodiment of the invention.
As shown in Figure 1, a kind of EOC of the present invention comprises headend and terminal module that communication connects from encircling detection system, and this terminal module comprises protocol apparatus, switch and detection control apparatus; Headend is connected with switch by protocol apparatus, the detection signal input of detection control apparatus is connected with the detection signal output of switch, and the control signal output of detection control apparatus is connected the control signal input with switch respectively and is connected with protocol apparatus.
When on the terminal module such as subscriber equipmenies such as PC since misoperation trigger terminal module produce when encircling phenomenon, switch will detect and export the square wave (signal indication that also can be set to other times cycle and/or waveform detects from the generation that encircles phenomenon) in 800 ms cycles at once, has detected terminal module with expression and has occured from encircling phenomenon; Detection control apparatus receives expression and occurs after encircling the signal of phenomenon, control signal with regard to the outlet terminal connection, as the chip with triple gate function is just exported high level, draw high accordingly the level of the control input end of switch and protocol apparatus, and then interrupt headend and be connected connection with terminal module, can effectively avoid occuring to cause from the broadcast storm that ring causes because of terminal module the generation of headend paralysis.
In addition, system of the present invention also is provided with reporting module and system maintaining module, reporting module is connected with switch, when switch detects when encircling the phenomenon generation, reporting module just will occur to be sent to system maintaining module from terminal module information such as the information such as IP address, device numbering of encircling phenomenon, so that the system maintenance personnel terminal module to breaking down promptly and accurately keeps in repair.
As shown in Figure 2, concrete, in the certainly ring testing circuit based on the EOC system, terminal module comprises the chip RTL8306E-CG that has from encircling the detecting function pin, chip I NT6400 and the chip ATtiny13A with triple gate function, and the pin 1(PB5 of chip ATtiny13A) with the pin C14(RESET# of chip I NT6400) be connected, the pin 3(PB4 of chip ATtiny13A) be connected all pin 90(ENDEFER/LOOPLED# with chip RTL8306E-CG with pin 6(PB1) be connected, the capacitor C of the pin 4(GND of chip ATtiny13A) being connected with pin 8(VCC by 0.1uf connects, and this pin 4(GND) ground connection, pin 8(VCC) is connected with power vd D; In addition, the pin 7(PB2 of chip ATtiny13A) respectively with the pin C11(MRX-DV of chip I NT6400) be connected pin 52(M (R) TXEN/PRXDV with chip RTL8306E-CG) be connected.
Wherein, chip RTL8306E-CG is connected with user terminal, and chip I NT6400 is connected with headend by the coaxial cable transmit port.
When chip RTL8306E-CG detects in the terminal module loop free signal, its pin 90 output LOW voltages, the pin 7 of chip ATtiny13A is output low level also, be that the pin 11 of chip I NT6400 and the pin 52 of chip RTL8306E-CG are low level, so that the M II mouth normal communication that terminal module is connected with headend; And detect when having from ring signal in the terminal module as chip RTL8306E-CG, the square wave (as shown in Figure 3) in its 90 800 ms cycles of output of pin, the pin 7 defeated high level of chip ATtiny13A, and then draw high the level of the pin 52 of the pin 11 of chip I NT6400 and chip RTL8306E-CG, so that the M II mouth communication interruption that terminal module is connected with headend so just can effectively avoid causing from ring because of the terminal module generation generation of EOC head end paralysis.
Further, also be provided with the reporting system that is connected with exchange chip, the system maintaining module that is connected with reporting system, when detecting terminal module, exchange chip occurs when encircling phenomenon, just will occur to be sent in the system maintaining module from the terminal module information such as IP address, the device numbering etc. that encircle phenomenon, so that the system maintenance personnel safeguard the equipment that breaks down.
In sum, a kind of EOC of the present invention is from encircling detection system and method, detect control circuit by in terminal module, arranging from ring, occur when encircling phenomenon at terminal module, the EOC terminal that can in time interrupt occuring from encircling phenomenon is connected with the communication of EOC head end, to avoid causing the paralysis of EOC head end, and then have influence on the communication connection of other user EOC terminals and above-mentioned EOC head end, the EOC end message that occurs from encircling phenomenon can also be transferred to system maintaining module timely and accurately simultaneously, so that the maintenance of system.
By explanation and accompanying drawing, provided the exemplary embodiments of the ad hoc structure of embodiment, based on the present invention's spirit, also can do other conversion.Although foregoing invention has proposed existing preferred embodiment, yet these contents are not as limitation.
For a person skilled in the art, read above-mentioned explanation after, various changes and modifications undoubtedly will be apparent.Therefore, appending claims should be regarded whole variations and the correction of containing true intention of the present invention and scope as.Any and all scope of equal value and contents all should be thought still to belong in the intent of the present invention and the scope in claims scope.
Claims (8)
1. an EOC is from encircling detection system, described EOC system comprises headend and terminal module, described terminal module comprises protocol apparatus and switch, described headend is connected with described switch by described protocol apparatus, be provided with on the described switch from encircling the detection signal output, it is characterized in that described terminal module also comprises a detection control apparatus;
Be provided with on the described detection control apparatus from encircling detection signal input and control signal output, described from encircle the detection signal input with described oneself encircle the detection signal output and be connected, described control signal output respectively with described switch be connected protocol apparatus and be connected.
2. EOC according to claim 1 is from encircling detection system, it is characterized in that, described detection control apparatus comprises the chip with triple gate function, describedly be arranged on the described chip from encircling the detection signal input, the signal output part of described chip respectively with described switch be connected the control input end of protocol apparatus and be connected.
3. EOC according to claim 1 is characterized in that from encircling detection system, and described switch detects when encircling detection signal, and is described from encircling the detection signal output square wave in output 800ms cycle.
4. EOC according to claim 1 is characterized in that from encircling detection system, also comprises reporting module and system maintaining module, described reporting module respectively with described switch be connected system maintaining module and be connected.
5. EOC according to claim 4 system is from encircling detection method, it is characterized in that, occur when encircling phenomenon when described switch detects described terminal module, described reporting module will occur to be uploaded to described system maintaining module from the terminal module information of encircling phenomenon.
6. an EOC system is characterized in that from encircling detection method, is applied to such as EOC as described in any one among the claim 1-5 may further comprise the steps from encircling detection system:
Described switch sense terminals module status, and the output corresponding detection signals is to described detection control apparatus;
Described detection control apparatus is exported respectively according to the detection signal that receives and is controlled signal to accordingly described switch and described protocol apparatus;
Described switch and described protocol apparatus move accordingly according to described control signal.
7. EOC according to claim 6 system is from encircling detection method, it is characterized in that, occur when encircling phenomenon when described switch detects described terminal module, connection control signal is interrupted in described detection control apparatus output, disconnects described terminal module and is connected with the communication of described headend.
8. EOC according to claim 7 system is from encircling detection method, it is characterized in that, described switch and described protocol apparatus receive described control signal, interrupt described switch and be connected the communication of protocol apparatus and connect, so that described terminal module is connected disconnection with the communication of described headend.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210568571.6A CN102970059B (en) | 2012-12-24 | 2012-12-24 | A kind of EOC is from ring detecting system and method |
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| CN201210568571.6A CN102970059B (en) | 2012-12-24 | 2012-12-24 | A kind of EOC is from ring detecting system and method |
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Cited By (3)
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| CN103986629A (en) * | 2014-06-06 | 2014-08-13 | 中怡(苏州)科技有限公司 | Network terminal equipment and control method thereof |
| CN104716989A (en) * | 2013-12-13 | 2015-06-17 | 上海未来宽带技术股份有限公司 | Coaxial network link quality real-time monitoring method and system |
| WO2016141554A1 (en) * | 2015-03-10 | 2016-09-15 | 华为技术有限公司 | Self-loop detection method and apparatus for charging device |
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| CN202206389U (en) * | 2011-07-27 | 2012-04-25 | 福建金钱猫电子科技有限公司 | Coaxial cable EOC (Ethernet over COAX) system supporting loop circuit detection |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104716989A (en) * | 2013-12-13 | 2015-06-17 | 上海未来宽带技术股份有限公司 | Coaxial network link quality real-time monitoring method and system |
| CN104716989B (en) * | 2013-12-13 | 2017-03-15 | 上海未来宽带技术股份有限公司 | A kind of coaxial network link-quality method of real-time and system |
| CN103986629A (en) * | 2014-06-06 | 2014-08-13 | 中怡(苏州)科技有限公司 | Network terminal equipment and control method thereof |
| CN103986629B (en) * | 2014-06-06 | 2017-04-12 | 中磊电子（苏州）有限公司 | Network terminal equipment and control method thereof |
| WO2016141554A1 (en) * | 2015-03-10 | 2016-09-15 | 华为技术有限公司 | Self-loop detection method and apparatus for charging device |
| CN106233568A (en) * | 2015-03-10 | 2016-12-14 | 华为技术有限公司 | A kind of charger is from ring detection method and device |
| CN106233568B (en) * | 2015-03-10 | 2019-08-16 | 华为技术有限公司 | A kind of charging equipment is from ring detection method and device |
| US10742057B2 (en) | 2015-03-10 | 2020-08-11 | Huawei Technologies Co., Ltd. | Self-loop detection method and apparatus for charging device |
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Granted publication date: 20170804 Termination date: 20181224 |