CN108732692A - A kind of photosignal automatic switching method - Google Patents
A kind of photosignal automatic switching method Download PDFInfo
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- CN108732692A CN108732692A CN201810463980.7A CN201810463980A CN108732692A CN 108732692 A CN108732692 A CN 108732692A CN 201810463980 A CN201810463980 A CN 201810463980A CN 108732692 A CN108732692 A CN 108732692A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4274—Electrical aspects
- G02B6/4278—Electrical aspects related to pluggable or demountable opto-electronic or electronic elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4274—Electrical aspects
- G02B6/4284—Electrical aspects of optical modules with disconnectable electrical connectors
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Abstract
The invention discloses a kind of photosignal automatic switching method, the specific steps are：Pulse command parsing is carried out when signal transmission；It chooses whether to be configured；If option and installment, opens configuration selection, closes hardware selection；If not option and installment, closes configuration selection, opens hardware selection；After option and installment, mode type judgement is carried out；If user input instruction 00,2M PDH electric signals are exported；If user input instruction 01,2M PDH optical signals are exported；Not when option and installment, 2M PDH electric signals are exported.The present invention carries out code conversion when user needs using 2M PDH optical signals and exports 2M PDH optical signals, when needing using 2M PDH electric signals, acquiescence output 2M PDH electric signals, user is solved not only to have needed with 2M PDH optical signals but also needed the demand with 2M PDH electric signals, and two discharge plate of power port and optical port need not be configured, save cost and power consumption.
Description
Technical field
The present invention relates to photoelectric signal transformation technical fields, are a kind of photosignal automatic switching methods specifically.
Background technology
Previous transmission network 2M PDH are by cable transmission, and by the way of HDB3 code conversions, output 2M PDH are electric
Signal.The transmission range of this transmission mode is short, and is easy, by environmental disturbances, to be only suitable in the preferable telecommunications of environmental condition
It is applied in computer room.But in the electric control system of original foundation, since environmental condition is poor, there is stronger electromagnetic interference, together
When transmission range farther out, so it is improper using 2M PDH electric signal transmissions in modern power controlling signal system.?
In now net application, optical fiber transmission becomes the prevailing transmission means of modern communication networks, in real case, it is often necessary in original electricity
2M PDH electric signals, are converted into 2M PDH optical signals by an external photoelectric converter in the case of cable.But this can be caused in this way
With the waste of power consumption, and exist management blind area, be unfavorable for on-site maintenance.
Invention content
The purpose of the present invention is to provide a kind of photosignal automatic switching methods, are designed based on original power port, installation one
A photoelectricity pluggable module can both export 2M PDH optical signals, can also directly export 2M PDH electric signals.
The present invention is achieved through the following technical solutions：A kind of photosignal automatic switching method, it is automatic by photosignal
Conversion equipment realizes photosignal automatic conversion, specifically includes following steps：
Step L1：Pulse command parsing is carried out when signal transmission；
Step L2：It chooses whether to be configured；If option and installment, opens configuration selection, closes hardware selection；If not selecting to match
It sets, then closes configuration selection, opens hardware selection；
Step L3：After option and installment, mode type judgement is carried out；If user input instruction 00,2M PDH electric signals are exported；If
User input instruction 01 then exports 2M PDH optical signals；
Step L4：Not when option and installment, 2M PDH electric signals are exported.
Further, in order to preferably realize the present invention, the photosignal automatic transfer equipment include respectively with cable
Output end connection photoelectricity pluggable module and photoelectric converter, the photoelectricity pluggable module include the output end with cable
Photopotential signal detection module, the photoelectricity of connection automatically select module；The photopotential signal detection module, photoelectricity automatically select
Module and photoelectric converter are sequentially connected；The photopotential signal detection module is provided with optical module switch；The photoelectricity is certainly
Dynamic selecting module includes that light signal port in place, light signal port not in place and electric signal output mouth, the photoelectric converter include
Electric signal input port and optical signal delivery outlet；Light signal port in place, light signal port not in place are examined with photopotential signal respectively
Survey module connection, electric signal output mouth connect with light signal port not in place, light signal port in place, electric signal input port and
Optical signal delivery outlet is sequentially connected；The light signal port in place includes switch S1, and light signal port not in place includes switch S2, telecommunications
Number input port includes switch S3, electric signal output mouth switch S4.
Further, in order to preferably realize that the present invention, the step L3 are further comprising the steps of：
Step L31：After option and installment, mode type judgement is carried out；User input instruction 00 is pattern 0：Optical signal is not in place,
Optical module switch is in the default conditions closed at this time；
Step L32：Photopotential signal detection module detects light signal not in place, then output order 0101, opens S2, S4, closes
Close S1, S3；
Step L33：The 2M PDH electric signals of cable output pass to electric signal output mouth by light signal port not in place and directly export
It uses.
Step L34：User input instruction 01 is pattern 1：Optical signal is in place, and optical module switch is opened at this time；
Step L35：Photopotential signal detection module detects light signal in place, then output order 1010, opens S1, S3, closes
S2,S4；
Step L36：The 2M PDH electric signals of cable output are passed to opto-electronic conversion by light signal port in place from electric signal input port
Device becomes the output use of 2M PDH optical signals after carrying out code conversion.
Further, in order to preferably realize that the present invention, the step L36 specifically refer to：
The coding of the 2M PDH electric signals is HDB3 codes, and the coding of 2M PDH optical signals is NRZ codes；HDB3 codes are that three ranks are highly dense
Degree bipolar code removes the negative level of HDB3 codes first when being converted to 2M PDH optical signals, after being then reconverted into NRZ codes,
2M PDH optical signals are exported by optical signal delivery outlet to use.
Further, in order to preferably realize that the present invention, the step L4 specifically refer to：
Not when option and installment, the 2M PDH electric signals of cable output enter photoelectric converter by electric signal input port and are encoded
2M PDH optical signals are exported after conversion to use.
Further, further include the protector being arranged in cable protection section, the photoelectricity in order to preferably realize the present invention
Position signal detection module, photoelectric converter are connected by the output end of protector and cable respectively.
Operation principle：
1. carrying out pulse command parsing when original cable transmission 2MPDH electric signals.
2. based on the design of existing power port and mounted photoelectric converter, a photoelectricity pluggable module, Yong Huxuan are installed
It selects and whether is configured.
3. if option and installment, carry out mode type judgement in next step, be pattern 0 when user input instruction 00：Optical signal is not
In place, optical module switch is in the closed state given tacit consent at this time, then directly output 2M PDH electric signals use；User input instruction
It is pattern 1 when 01：Optical signal is in place, and optical module switch is in an open state at this time, and the 2M PDH electric signals of cable output enter light
Electric conversion module carries out code conversion and exports 2M PDH optical signals.
4. if not option and installment, the 2MPDH electric signals of cable output enter photoelectric conversion module, and to carry out code conversion only defeated
Go out 2M PDH optical signals.
Compared with prior art, the present invention haing the following advantages and advantageous effect：
The present invention is designed based on existing power port, increases a photoelectricity pluggable module, needs to believe using 2M PDH light in user
Number when carry out code conversion export 2M PDH optical signals, need using 2M PDH electric signals when, photoelectricity pluggable module acquiescence
2M PDH electric signals are exported, user is solved and had not only needed with 2M PDH optical signals but also needed the demand with 2M PDH electric signals, and not
Two discharge plate of power port and optical port is needed to configure, cost and power consumption have been saved.
Description of the drawings
Fig. 1 is work flow diagram of the present invention；
Fig. 2 is present system block diagram；
Fig. 3 is that photoelectricity automatically selects module and photoelectric converter circuit diagram；
Wherein 1- photoelectricity pluggable module, 2- photopotential signal detection modules, 3- photoelectricity automatically select module, and 4- photoelectricity turns
Parallel operation, K- optical modules switch, A- light signal port in place, B- light signal port not in place, C- electric signals input port, D- electric signal outputs
Mouthful, E- optical signal delivery outlets.
Specific implementation mode
The present invention is described in further detail with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1：
The present invention is achieved through the following technical solutions, and as shown in Figure 1-Figure 3, a kind of photosignal automatic switching method passes through light
Electric signal automatic transfer equipment realizes photosignal automatic conversion, specifically includes following steps：Step L1：It is carried out when signal transmission
Pulse command parses；Step L2：It chooses whether to be configured；If option and installment, opens configuration selection, closes hardware selection；
If not option and installment, closes configuration selection, opens hardware selection；Step L3：After option and installment, mode type judgement is carried out；
If user input instruction 00,2M PDH electric signals are exported；If user input instruction 01,2M PDH optical signals are exported；Step
L4：Not when option and installment, 2M PDH electric signals are exported.
It should be noted that by above-mentioned improvement, specific implementation method is：When original cable transmission 2M PDH electric signals into
Row pulse command parses, and user chooses whether to configure, and configuration selection is opened if option and installment, closes hardware selection, so
Mode type judgement is carried out afterwards.If user needs to use 2M PDH electric signals, instruction 00, the 2M PDH electricity of cable output are inputted
Signal is directly over photopotential signal detection module 2 and photoelectricity automatically selects module 3 and exports the use of 2M PDH electric signals.If user
It needs to use 2M PDH optical signals, then inputs instruction 01, the 2M PDH electric signals of cable output are directly over the inspection of photopotential signal
Surveying module 2 and photoelectricity and automatically selecting to be transferred to photoelectric converter 4 again after module 3 and carry out code conversion output 2M PDH optical signals makes
With.
If user does not select to configure, closes configuration selection, opens hardware selection, the 2M PDH telecommunications of cable output
It number is directly over photopotential signal detection module 2 and photoelectricity automatically selects and is transferred to photoelectric converter 4 again after module 3 and encoded
Conversion output 2M PDH optical signals use.Not when option and installment, 2M PDH optical signals can only be exported.It realizes user and both needs 2M
PDH electric signals need the demand of 2M PDH optical signals again, and need not configure two discharge plate of power port and optical port, saved cost and
Power consumption.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 2：
The present invention is achieved through the following technical solutions, as shown in Figure 1-Figure 3, a kind of photosignal automatic switching method, the light
Electric signal automatic transfer equipment includes the photoelectricity pluggable module 1 being connect respectively with the output end of cable and photoelectric converter 4, institute
It includes that photopotential signal detection module 2, the photoelectricity being connect with the output end of cable automatically select module to state photoelectricity pluggable module 1
3；The photopotential signal detection module 2, photoelectricity automatically select module 3 and photoelectric converter 4 is sequentially connected；The photopotential
Signal detection module 2 is provided with optical module switch K；The photoelectricity automatically selects module 3 and does not exist including light signal port A in place, light
Position signal port B and electric signal output mouth D, the photoelectric converter 4 include electric signal input port C and optical signal delivery outlet E；Institute
Light signal port A in place, light signal port B not in place is stated to connect with photopotential signal detection module 2 respectively, electric signal output mouth D with
Light signal port B connections not in place, light signal port A, electric signal input port C and the optical signal delivery outlet E in place are sequentially connected；
The light signal port A in place includes switch S1, and light signal port B not in place includes switch S2, and electric signal input port C includes switch
S3, electric signal output mouth D switches S4.
It should be noted that by above-mentioned improvement, previous transmission network 2M PDH signals are by cable transmission, original
In the case that cable output end and photoelectric converter 4 connect, one photoelectricity pluggable module 1 of installation is combined with photoelectric converter 4
Form new photosignal automatic transfer equipment, realization, which does not change original cable arrangement and can complete user, had both needed 2M PDH
Electric signal, and need the demand of 2M PDH optical signals.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 3：
The present embodiment advanced optimizes on the basis of the above embodiments, as shown in Figure 1, the step L3 further includes following step
Suddenly：Step L31：After option and installment, mode type judgement is carried out；User input instruction 00 is pattern 0：Optical signal is not in place, this
Time module switch K is in the default conditions closed；Step L32：Photopotential signal detection module 2 detects that light is not believed in place
Number, then output order 0101, opens S2, S4, closes S1, S3；Step L33：The 2M PDH electric signals of cable output pass through light not
Signal port B in place passes to electric signal output mouth D and directly exports use.Step L34：User input instruction 01 is pattern 1：Light is believed
Number in place, optical module switch K unlatchings at this time；Step L35：Photopotential signal detection module 2 detects light signal in place, then exports
S1, S3 are opened in instruction 1010, close S2, S4；Step L36：The 2M PDH electric signals of cable output pass through light signal port A in place
Being passed to after photoelectric converter 4 carries out code conversion from electric signal input port C becomes the output use of 2M PDH optical signals；The step
L36 is specifically referred to：The coding of the 2M PDH electric signals is HDB3 codes, and the coding of 2M PDH optical signals is NRZ codes；HDB3 codes are
High Density Bipolar 3 removes the negative level of HDB3 codes, is then reconverted into first when being converted to 2M PDH optical signals
After NRZ codes, 2M PDH optical signals are exported by optical signal delivery outlet E and are used.
It should be noted that by above-mentioned improvement, after user's option and installment, mode type judgement is carried out, there are two types of moulds
Formula type is pattern 0 respectively：Optical signal is not in place and pattern 1：Optical signal is in place.When user is needed using 2M PDH electric signals,
Instruction 00 is then inputted, optical module switch K is in the closed state of acquiescence at this time, is pattern 0：Optical signal is not in place, photopotential letter
Number detection module 2 detects that optical signal is not in place, then 2 output order 0101 of photopotential signal detection module, and photoelectricity selects automatically
It selects module to turn on the switch S2, switch S4 and turn off the switch S1, switch S3, the 2M PDH electric signals of cable output do not exist by light
Position signal port B passes to electric signal output mouth D and directly exports use.
When user is needed using 2M PDH optical signals, then instruction 01 is inputted, optical module switch K is opened at this time, is pattern 1：
Optical signal is in place, and photopotential signal detection module 2 detects that optical signal is in place, and the then output of photopotential signal detection module 2 refers to
1010 are enabled, photoelectricity automatically selects module and turns on the switch S1, switch S3 and turn off the switch S2, switch S4, the 2M of cable output
PDH electric signals are passed to photoelectric converter 4 from electric signal input port C by light signal port A in place and carry out code conversion.The cable
The coding of the 2M PDH electric signals of output is HDB3 codes, and the coding of 2M PDH optical signals is NRZ codes；HDB3 codes are three rank high density
Bipolar code removes the negative level of HDB3 codes first when being converted to 2M PDH optical signals, after being then reconverted into NRZ codes, leads to
Optical signal delivery outlet E output 2M PDH optical signals are crossed to use.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 4：
The present embodiment advanced optimizes on the basis of the above embodiments, and as shown in Figure 1-Figure 3, the step L4 is specifically
Refer to：Not when option and installment, the 2M PDH electric signals of cable output enter photoelectric converter 4 by electric signal input port C and are compiled
Output 2M PDH optical signals use after code conversion.
It should be noted that by above-mentioned improvement, not when option and installment, that is, 1 not enabled of photoelectricity pluggable module installed,
The 2M PDH electric signals of cable output enter photoelectric converter 4 by electric signal input port C and carry out code conversion, and the cable is defeated
The coding of the 2M PDH electric signals gone out is HDB3 codes, and the coding of 2M PDH optical signals is NRZ codes；HDB3 codes are that three rank high density are double
Polar code removes the negative level of HDB3 codes first when being converted to 2M PDH optical signals, after being then reconverted into NRZ codes, passes through
Optical signal delivery outlet E output 2M PDH optical signals use.This implementation column can only export 2M PDH optical signals.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 5：
The present embodiment advanced optimizes on the basis of the above embodiments, and as shown in Figure 1-Figure 3, a kind of photosignal is from turn
Method is changed, photosignal automatic conversion is realized by photosignal automatic transfer equipment, specifically includes following steps：Step L1：
Pulse command parsing is carried out when signal transmission；Step L2：It chooses whether to be configured；If option and installment, open configuration selection,
Close hardware selection；If not option and installment, closes configuration selection, opens hardware selection；Step L3：After option and installment, carry out
Mode type judges；If user input instruction 00,2M PDH electric signals are exported；If user input instruction 01, exports 2M
PDH optical signals；Step L4：Not when option and installment, 2M PDH electric signals are exported；The photosignal automatic transfer equipment includes point
The photoelectricity pluggable module 1 and photoelectric converter 4 not connect with the output end of cable, the photoelectricity pluggable module 1 include with
Photopotential signal detection module 2, the photoelectricity of the output end connection of cable automatically select module 3；The photopotential signal detection mould
Block 2, photoelectricity automatically select module 3 and photoelectric converter 4 is sequentially connected；The photopotential signal detection module 2 is provided with light
Module switch K；It includes that light signal port A in place, light signal port B not in place and electric signal are defeated that the photoelectricity, which automatically selects module 3,
D is exported, the photoelectric converter 4 includes electric signal input port C and optical signal delivery outlet E；Light signal port A in place, light are not
Signal port B in place is connect with photopotential signal detection module 2 respectively, and electric signal output mouth D is connect with light signal port B not in place,
Light signal port A, electric signal input port C and the optical signal delivery outlet E in place are sequentially connected；The light signal port A packets in place
Switch S1 is included, light signal port B not in place includes switch S2, and electric signal input port C includes switch S3, electric signal output mouth D switches
S4；The step L3 is further comprising the steps of：Step L31：After option and installment, mode type judgement is carried out；User input instruction
00, it is pattern 0：Optical signal is not in place, and optical module switch K is in the default conditions closed at this time；Step L32：Photopotential signal
Detection module 2 detects light signal not in place, then output order 0101, opens S2, S4, closes S1, S3；Step L33：Cable is defeated
The 2M PDH electric signals gone out pass to electric signal output mouth D by light signal port B not in place and directly export use.Step L34：User
Input instruction 01 is pattern 1：Optical signal is in place, and optical module switch K is opened at this time；Step L35：Photopotential signal detection module 2
It detects light signal in place, then output order 1010, opens S1, S3, close S2, S4；Step L36：The 2M PDH of cable output
Electric signal is passed to from electric signal input port C after photoelectric converter 4 carries out code conversion by light signal port A in place becomes 2M PDH
Optical signal output uses；The step L36 is specifically referred to：The coding of the 2M PDH electric signals is HDB3 codes, 2M PDH light letter
Number coding be NRZ codes；HDB3 codes are High Density Bipolar 3s, when being converted to 2M PDH optical signals, are removed first
The negative level of HDB3 codes after being then reconverted into NRZ codes, exports 2M PDH optical signals by optical signal delivery outlet E and uses；It is described
Step L4 is specifically referred to：Not when option and installment, the 2M PDH electric signals of cable output enter photoelectricity by electric signal input port C and turn
Output 2M PDH optical signals use after parallel operation 4 carries out code conversion；Further include the protector being arranged in cable protection section, the light
Electric potential signal detection module（2）, photoelectric converter（4）It is connected respectively by the output end of protector and cable.
It should be noted that the present embodiment is preferred embodiment, previous transmission network 2M PDH signals are to pass through
Cable transmission, in the case where original cable output end and photoelectric converter 4 connect, install a photoelectricity pluggable module 1 with
The combination of photoelectric converter 4 forms new photosignal automatic transfer equipment, and realization, which does not change original cable arrangement, to be completed
User had not only needed 2M PDH electric signals, but also needed the demand of 2M PDH optical signals.
Specific implementation method is：Pulse command parsing is carried out when original cable transmission 2M PDH electric signals, user's selection is
It is no to be configured.Configuration selection is opened when option and installment, closes hardware selection, and configuration selection is not closed when option and installment, is opened
Hardware selects.If after user's option and installment, to carry out mode type judgement, there are two types of mode types, are pattern 0 respectively：Light is believed
Number not in place and pattern 1：Optical signal is in place.
When user is needed using 2M PDH electric signals, then instruction 00 is inputted, optical module switch K is in the closing of acquiescence at this time
State is pattern 0：Optical signal is not in place, and photopotential signal detection module 2 detects that optical signal is not in place, and then photopotential is believed
Number 2 output order 0101 of detection module, photoelectricity automatically select module and turn on the switch S2, switch S4 and turn off the switch S1, switch
S3, the 2M PDH electric signals of cable output pass to electric signal output mouth D by light signal port B not in place and directly export use.
When user is needed using 2M PDH optical signals, then instruction 01 is inputted, optical module switch K is opened at this time, is pattern 1：
Optical signal is in place, and photopotential signal detection module 2 detects that optical signal is in place, and the then output of photopotential signal detection module 2 refers to
1010 are enabled, photoelectricity automatically selects module and turns on the switch S1, switch S3 and turn off the switch S2, switch S4, the 2M of cable output
PDH electric signals are passed to photoelectric converter 4 from electric signal input port C by light signal port A in place and carry out code conversion.The cable
The coding of the 2M PDH electric signals of output is HDB3 codes, and the coding of 2M PDH optical signals is NRZ codes；HDB3 codes are three rank high density
Bipolar code removes the negative level of HDB3 codes first when being converted to 2M PDH optical signals, after being then reconverted into NRZ codes, leads to
Optical signal delivery outlet E output 2M PDH optical signals are crossed to use.
Not when option and installment, that is, the 2M PDH electric signals of 1 not enabled of photoelectricity pluggable module installed, cable output pass through
Electric signal input port C enters photoelectric converter 4 and carries out code conversion, and the coding of the 2M PDH electric signals of the cable output is
The coding of HDB3 codes, 2M PDH optical signals is NRZ codes；HDB3 codes are High Density Bipolar 3s, are being converted to 2M PDH light
When signal, remove the negative level of HDB3 codes first, after being then reconverted into NRZ codes, 2M PDH are exported by optical signal delivery outlet E
Optical signal uses.2M PDH optical signals can only not be exported when option and installment.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
The operation principle of photoelectric converter 4 used in the present invention and its progress code conversion is the prior art, Gu not
It is described in detail again.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
According to the technical spirit of the present invention to any simple modification, equivalent variations made by above example, the protection of the present invention is each fallen within
Within the scope of.
Claims (6)
1. a kind of photosignal automatic switching method, it is characterised in that：Optical telecommunications are realized by photosignal automatic transfer equipment
Number automatic conversion, specifically includes following steps：
Step L1：Pulse command parsing is carried out when signal transmission；
Step L2：It chooses whether to be configured；If option and installment, opens configuration selection, closes hardware selection；If not selecting to match
It sets, then closes configuration selection, opens hardware selection；
Step L3：After option and installment, mode type judgement is carried out；If user input instruction 00,2M PDH electric signals are exported；If
User input instruction 01 then exports 2M PDH optical signals；
Step L4：Not when option and installment, 2M PDH electric signals are exported.
2. a kind of photosignal automatic switching method according to claim 1, it is characterised in that：The photosignal is automatic
Conversion equipment includes the photoelectricity pluggable module being connect respectively with the output end of cable（1）And photoelectric converter（4）, the photoelectricity
Pluggable module（1）It include the photopotential signal detection module being connect with the output end of cable（2）, photoelectricity automatically select module
（3）；The photopotential signal detection module（2）, photoelectricity automatically select module（3）And photoelectric converter（4）It is sequentially connected；Institute
State photopotential signal detection module（2）It is provided with optical module switch（K）；The photoelectricity automatically selects module（3）It is in place including light
Signal port（A）, light signal port not in place（B）And electric signal output mouth（D）, the photoelectric converter（4）It is defeated including electric signal
Entrance（C）With optical signal delivery outlet（E）；The light signal port in place（A）, light signal port not in place（B）Believe respectively with photopotential
Number detection module（2）Connection, electric signal output mouth（D）With light signal port not in place（B）Connection, the light signal port in place（A）,
Electric signal input port（C）And optical signal delivery outlet（E）It is sequentially connected；The light signal port in place（A）Including switch S1, light is not
Signal port in place（B）Including switch S2, electric signal input port（C）Including switch S3, electric signal output mouth（D）Switch S4.
3. a kind of photosignal automatic switching method according to claim 2, it is characterised in that：The step L3 further includes
Following steps：
Step L31：After option and installment, mode type judgement is carried out；User input instruction 00 is pattern 0：Optical signal is not in place,
Optical module switchs at this time（K）Default conditions in closing；
Step L32：Photopotential signal detection module（2）It detects light signal not in place, then output order 0101, opens S2, S4,
Close S1, S3；
Step L33：The 2M PDH electric signals of cable output pass through light signal port not in place（B）Pass to electric signal output mouth（D）Directly
Output is connect to use；
Step L34：User input instruction 01 is pattern 1：Optical signal is in place, and optical module switchs at this time（K）It opens；
Step L35：Photopotential signal detection module（2）It detects light signal in place, then output order 1010, opens S1, S3, close
Close S2, S4；
Step L36：The 2M PDH electric signals of cable output pass through light signal port in place（A）From electric signal input port（C）Incoming light
Electric transducer（4）Become the output use of 2M PDH optical signals after carrying out code conversion.
4. a kind of photosignal automatic switching method according to claim 3, it is characterised in that：The step L36 is specific
Refer to：
The coding of the 2M PDH electric signals is HDB3 codes, and the coding of 2M PDH optical signals is NRZ codes；HDB3 codes are that three ranks are highly dense
Degree bipolar code removes the negative level of HDB3 codes first when being converted to 2M PDH optical signals, after being then reconverted into NRZ codes,
Pass through optical signal delivery outlet（E）2M PDH optical signals are exported to use.
5. a kind of photosignal automatic switching method according to claim 4, it is characterised in that：The step L4 is specifically
Refer to：
Not when option and installment, the 2M PDH electric signals of cable output pass through electric signal input port（C）Into photoelectric converter（4）Into
2M PDH optical signals are exported after row code conversion to use.
6. according to a kind of photosignal automatic switching method of claim 2-5 any one of them, it is characterised in that：Further include setting
Set the protector in cable protection section, the photopotential signal detection module（2）, photoelectric converter（4）Pass through protector respectively
It is connect with the output end of cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810463980.7A CN108732692B (en) | 2018-05-15 | 2018-05-15 | A kind of photosignal automatic switching method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050141568A1 (en) * | 2003-12-24 | 2005-06-30 | Kwak Sung H. | Apparatus for and method of integrating switching and transferring of SONET/SDH, PDH, and Ethernet signals |
| CN1992572A (en) * | 2005-12-31 | 2007-07-04 | 北京畅通达通信技术有限公司 | Method and apparatus for multiplexing from low-speed light port to 2M transmission line and protection switching |
| CN202145646U (en) * | 2011-06-17 | 2012-02-15 | 深圳市祈飞科技有限公司 | Network security device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050141568A1 (en) * | 2003-12-24 | 2005-06-30 | Kwak Sung H. | Apparatus for and method of integrating switching and transferring of SONET/SDH, PDH, and Ethernet signals |
| CN1992572A (en) * | 2005-12-31 | 2007-07-04 | 北京畅通达通信技术有限公司 | Method and apparatus for multiplexing from low-speed light port to 2M transmission line and protection switching |
| CN202145646U (en) * | 2011-06-17 | 2012-02-15 | 深圳市祈飞科技有限公司 | Network security device |
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