CN101299641B - Automatic control method and apparatus for switching laser multiple formats - Google Patents
Automatic control method and apparatus for switching laser multiple formats Download PDFInfo
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- CN101299641B CN101299641B CN2008101276070A CN200810127607A CN101299641B CN 101299641 B CN101299641 B CN 101299641B CN 2008101276070 A CN2008101276070 A CN 2008101276070A CN 200810127607 A CN200810127607 A CN 200810127607A CN 101299641 B CN101299641 B CN 101299641B
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Abstract
The present invention provides an automatic control device of laser multiple standard switches, including an information memory cell, for recording m kinds of laser standard information; a control unit for reading the specific laser standard information from the information memory cell and outputting the corresponding bus control signal onto the switch unit; and a switch unit for selecting the corresponding pin setting according to the bus control signal. The present invention provides an automatic control method for laser multiple standard switches. The present invention can resolve the problem that the circuit design of the transmitter changes with the different standards of lasers, and can greatly reduce the design cost, production cost and handling cost of the circuit.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of autocontrol method and device of laser multiple formats switching.
Background technology
The transmitter of optical communication system need adopt the specific laser of laser output.
In realizing process of the present invention; the inventor finds to run into through regular meeting the laser of plurality of specifications in transmitter design; the common pin definitions of the laser of different size is also different; this causes the circuit design of transmitter also must change, and this has just increased circuit design cost, production cost and management cost greatly.
Summary of the invention
The present invention aims to provide autocontrol method and the device that a kind of laser multiple formats switches, and the problem that change different along with the specification of laser with the circuit design that solves transmitter, the problem that causes design cost, production cost and the management cost of circuit to increase greatly.
In an embodiment of the present invention, the automatic control equipment that provides a kind of laser multiple formats to switch, comprising: information memory cell is used to write down m kind laser standard; Control unit is used for reading specific laser standard from information memory cell, and the bus control signal of output correspondence is to switch element; Switch element is used for according to bus control signal, selects the pin setting of corresponding laser.
Preferably, information memory cell adopts Electrically Erasable Read Only Memory.
Preferably, control unit adopts microprocessor.
Preferably, switch element adopts analog switch.
Preferably, switch element comprises n control switch; What one side of i control switch connected that i of laser switch pin is provided with 1 to m is set, and what opposite side was used for exporting i switching pin is provided with 1 to the selection setting that m is set, i=1 wherein, and 2 ..., n.
In an embodiment of the present invention, the autocontrol method that also provides a kind of laser multiple formats to switch, may further comprise the steps: control unit reads specific laser standard from the information memory cell of the m kind laser standard that prestores; The bus control signal of control unit output correspondence is to switch element; Switch element is selected the pin setting of corresponding laser according to bus control signal.
Preferably, adopt Erasable Programmable Read Only Memory EPROM to realize information memory cell.
Preferably, adopt microprocessor to realize control unit.
Preferably, adopt analog switch to realize switch element.
Preferably, switch element comprises n control switch, a side of i control switch connect laser i switching pin be provided with 1 to m is set, opposite side be used for exporting i switch pin be provided with 1 to the selection setting that m is set, i=1 wherein, 2, ..., n; Bus control signal indication selects to be provided with k, and switch element is selected corresponding pin to be provided with specifically and comprised according to bus control signal: i control switch from i switching pin be provided with 1 to being provided with selection is provided with i the pin of k as particular laser the m.
Because select corresponding pin setting according to the laser specification information, thus overcome the problem that the circuit design of transmitter changes along with the specification difference of laser, and then reduced design cost, production cost and the management cost of circuit.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the functional-block diagram according to the automatic control equipment of the laser multiple formats switching of the embodiment of the invention;
The basic structure that Fig. 2 shows the A type laser of correlation technique is connected with pin;
The basic structure that Fig. 3 shows the Type B laser of correlation technique is connected with pin;
Fig. 4 shows the structure drawing of device of the automatic control that the laser multiple formats of the preferred embodiment of the present invention switches;
Fig. 5 shows the flow chart according to the autocontrol method of the laser multiple formats switching of the embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 shows the functional-block diagram according to the automatic control equipment of the laser multiple formats switching of the embodiment of the invention, comprising:
Information memory cell is used to write down the laser standard that will use;
Control unit, the output bus control signal is to switch element after being used for reading the laser specification information from information memory cell.
Switch element, switch element comprise n control switch, and each control switch one side connects respectively need carry out the pin that specification is switched, and promptly switch pin one to switching pin n, corresponding m the different setting option of each control switch of opposite side.
According to the bus signals that control unit provides, n control switch will be selected the pin setting of corresponding laser, thereby realize the automatic control of switching to the laser of plurality of specifications.
From above description, as can be seen, the present invention is because select corresponding pin setting according to the laser specification information, the problem that changes so the circuit design that has overcome transmitter is different along with the specification of laser, and then reduced design cost, production cost and the management cost of circuit.
Preferably, information memory cell adopts Electrically Erasable Read Only Memory.
Preferably, control unit adopts microprocessor.
Preferably, switch element adopts analog switch.
Preferably, switch element comprises n control switch; What one side of i control switch connected that i of laser switch pin is provided with 1 to m is set, and what opposite side was used for exporting i switching pin is provided with 1 to the selection setting that m is set, i=1 wherein, and 2 ..., n.
Above preferred embodiment is realized the automatic control of switching to the laser of plurality of specifications.
Fig. 2 shows the A type that has the wavelength locking function of correlation technique respectively with Fig. 3 and the basic structure of Type B laser is connected with pin, and wherein the laser pin one of specification A connects the anode of the photodiode that is used for wavelength monitor; 2 pin connect thermistor one end, and the thermistor other end is by being connected direct ground connection with the laser shell; 3 pin are the bias current input, are used for by adjusting the luminous intensity that of size of current control laser; 4 pin connect the anode of the photodiode that is used for the luminous intensity monitoring; 5 pin connect the negative electrode that is used for wavelength monitoring and is used for the photodiode of luminous intensity monitoring simultaneously; 6 pin and 7 pin connect the positive and negative terminal of thermoelectric refrigerating unit (TEC); 8 pin are radio-frequency (RF) signal input end; And for the laser of specification B, 1 pin and 2 pin connect the two ends of thermistor; 3 pin are the bias current input; 4 pin connect and are used for the move the capital to another place anode of photodiode of monitoring of light, and the negative electrode of diode is the inner directly ground connection of laser; 5 pin connect the anode of the photodiode that is used for wavelength monitoring, and the negative electrode of diode is the inner directly ground connection of laser; 6 pin and 7 pin connect the positive and negative terminal of TEC; 8 pin are radio-frequency (RF) signal input end.Contrast as can be known, the pin two, 3,4,6,7 of the laser of specification A and specification B, 8 pin are the general end of two kinds of specification lasers, and the pin that need switch according to specification is 1 pin and 5 pin.
Fig. 4 shows the structure drawing of device of the automatic control that the laser multiple formats of the preferred embodiment of the present invention switches, wherein information memory cell adopts Electrically Erasable Read Only Memory (EEPROM) to realize, control unit adopts micro-control unit (MCU) to realize, switch element adopts analog switch to realize.
According to the design among Fig. 4, when the laser specification information that writes down among the EEPROM is A type laser, two analog switches of control were selected the A end after MCU read information, this moment pin 5 ground connection, the wavelength monitoring electric current of exporting on the pin one is converted into the wavelength monitoring voltage signal after through a trans-impedance amplifier (TIA) and carries out wavelength locking control; When the laser specification information that writes down among the EEPROM is the Type B laser, two analog switches of control were selected the B end after MCU read information, this moment pin one ground connection, the wavelength monitoring electric current of output is converted into the wavelength monitoring voltage signal after through a trans-impedance amplifier and carries out wavelength locking control on the pin 5, realizes the automatic control that laser multiple formats is switched.
Fig. 5 shows the flow chart according to the autocontrol method of the laser multiple formats switching of the embodiment of the invention, may further comprise the steps:
Step S10, control unit reads specific laser standard from the information memory cell of the m kind laser standard that prestores;
Step S20, the bus control signal of control unit output correspondence is to switch element;
Step S30, switch element select the pin setting of corresponding laser according to bus control signal.
As can be seen, the present invention is because select corresponding pin setting according to the laser specification information, so overcome the problem that the circuit design of transmitter changes along with the specification difference of laser, and then reduced design cost, production cost and the management cost of circuit.
Preferably, adopt Erasable Programmable Read Only Memory EPROM to realize information memory cell.
Preferably, adopt microprocessor to realize control unit.
Preferably, adopt analog switch to realize switch element.
Preferably, switch element comprises n control switch, a side of i control switch connect laser i switching pin be provided with 1 to m is set, opposite side be used for exporting i switch pin be provided with 1 to the selection setting that m is set, i=1 wherein, 2, ..., n; Bus control signal indication selects to be provided with k, and switch element is selected corresponding pin to be provided with specifically and comprised according to bus control signal: i control switch from i switching pin be provided with 1 to being provided with selection is provided with i the pin of k as particular laser the m.
Above preferred embodiment is realized the automatic control of switching to the laser of plurality of specifications.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the automatic control equipment that laser multiple formats switches is characterized in that, comprising:
Information memory cell is used to write down m kind laser standard;
Control unit is used for reading specific laser standard from described information memory cell, and the bus control signal of output correspondence is to switch element;
Described switch element is used for according to described bus control signal, selects the pin setting of corresponding described laser, and wherein, described switch element comprises n control switch; One side of i control switch connect i of described laser switch pin be provided with 1 to m is set, what opposite side was used to export described i switching pin is provided with 1 to the pin setting of selecting described in the m is set, i=1 wherein, 2 ..., n.
2. automatic control equipment according to claim 1 is characterized in that,
Described information memory cell adopts Electrically Erasable Read Only Memory.
3. automatic control equipment according to claim 1 is characterized in that,
Described control unit adopts microprocessor.
4. automatic control equipment according to claim 1 is characterized in that,
Described switch element adopts analog switch.
5. the autocontrol method that laser multiple formats switches is characterized in that, may further comprise the steps:
Control unit reads specific laser standard from the information memory cell of the m kind laser standard that prestores;
The bus control signal of described control unit output correspondence is to switch element;
Described switch element is according to described bus control signal, select the pin setting of corresponding described laser, wherein, described switch element comprises n control switch, a side of i control switch connect i of described laser switch pin be provided with 1 to m is set, what opposite side was used to export described i switching pin is provided with 1 to the pin setting of selecting described in the m is set, i=1 wherein, 2 ..., n; Described bus control signal indication selects to be provided with k, described switch element is according to described bus control signal, selects corresponding pin to be provided with specifically and comprises: i control switch from described i switching pin be provided with 1 to being provided with selection is provided with i the pin of k as described particular laser the m.
6. autocontrol method according to claim 5 is characterized in that, adopts Erasable Programmable Read Only Memory EPROM to realize described information memory cell.
7. autocontrol method according to claim 5 is characterized in that, adopts microprocessor to realize described control unit.
8. autocontrol method according to claim 5 is characterized in that, adopts analog switch to realize described switch element.
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| CN2008101276070A CN101299641B (en) | 2008-06-30 | 2008-06-30 | Automatic control method and apparatus for switching laser multiple formats |
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| CN2008101276070A CN101299641B (en) | 2008-06-30 | 2008-06-30 | Automatic control method and apparatus for switching laser multiple formats |
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| CN101299641A CN101299641A (en) | 2008-11-05 |
| CN101299641B true CN101299641B (en) | 2011-05-25 |
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