CN112751622A - Multifunctional S-band photoelectric transceiving system and method - Google Patents
Multifunctional S-band photoelectric transceiving system and method Download PDFInfo
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- CN112751622A CN112751622A CN202011591708.0A CN202011591708A CN112751622A CN 112751622 A CN112751622 A CN 112751622A CN 202011591708 A CN202011591708 A CN 202011591708A CN 112751622 A CN112751622 A CN 112751622A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
- H04B10/07955—Monitoring or measuring power
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Abstract
The invention discloses a multifunctional S-band photoelectric transceiving system, which adopts a direct modulation mode to realize radio frequency signal photoelectric conversion and adopts an intensity detection mode to realize photoelectric conversion of optical signals, and comprises the following steps: the photoelectric conversion module, the photoelectric conversion module and the CPCI interface module are integrated with a radio frequency power monitoring function, a radio frequency amplification function, an attenuation function and an optical power monitoring function, and support a CPCI standard interface, and the positions of the photoelectric conversion module and the photoelectric conversion module can be interchanged; the CPCI interface module internally completes the state acquisition of the electro-optical conversion module and the photoelectric conversion module and the control of the attenuation circuit, and externally completes the interaction with an upper computer. The electro-optical conversion module integrates the radio frequency attenuator and the radio frequency amplifier, can meet the requirements of different input radio frequency power and noise coefficient indexes by adjusting the attenuation value of the radio frequency attenuator, and has the advantages of large dynamic range and wide application range.
Description
Technical Field
The invention relates to a multifunctional S-band photoelectric transceiving system and a multifunctional S-band photoelectric transceiving method, and belongs to the field of optical fiber communication.
Background
The characteristics of low loss, large bandwidth, light weight and low possibility of receiving electromagnetic interference make the optical fiber communication technology particularly suitable for the application of long-distance radio frequency signal transmission, such as radar systems, satellite ground receiving stations and remote measuring systems. At present, optical fiber communication products for radio frequency transmission are mainly equipment-level products, are large in size, low in integration level, fixed in equipment function and inconvenient to adjust, and therefore the optical fiber transmission products have certain problems in the aspects of adaptability and maintainability.
Disclosure of Invention
The technical problem solved by the invention is as follows: the multifunctional S-band photoelectric transceiving system and the multifunctional S-band photoelectric transceiving method overcome the defects of the prior art, integrate radio frequency amplification, attenuation and various monitoring functions, improve the performance index of a product, monitor each link of signal transmission and the working state of the system and realize optical fiber transmission of radio frequency signals.
The technical scheme of the invention is as follows:
a multifunctional S-band photoelectric transceiving system adopts a direct modulation mode to realize radio-frequency signal electro-optic conversion and adopts an intensity detection mode to realize photoelectric conversion of optical signals, and comprises: the photoelectric conversion module, the photoelectric conversion module and the CPCI interface module are integrated with a radio frequency power monitoring function, a radio frequency amplification function, an attenuation function and an optical power monitoring function, and support a CPCI standard interface, and the positions of the photoelectric conversion module and the photoelectric conversion module can be interchanged; the CPCI interface module internally completes the state acquisition of the electro-optical conversion module and the photoelectric conversion module and the control of the attenuation circuit, and externally completes the interaction with an upper computer.
Further, the electro-optical conversion module comprises an input radio frequency coupler, an input radio frequency power monitoring circuit, an input radio frequency attenuation circuit, an input radio frequency amplifying current monitoring circuit, a direct dimming power module, an electro-optical conversion module state acquisition circuit and an electro-optical conversion module board-to-board interface circuit.
Furthermore, the photoelectric conversion module comprises a detector module, an optical power monitoring circuit, an output radio frequency amplifying current monitoring circuit, an output radio frequency attenuation circuit, an output radio frequency coupler, an output radio frequency power detecting circuit, a photoelectric conversion module state collecting circuit and a photoelectric conversion module board-to-board interface circuit.
Furthermore, the installation sizes of the electro-optical conversion module and the photoelectric conversion module are the same, the physical positions of the board-to-board interface circuit of the electro-optical conversion module and the board-to-board interface circuit of the photoelectric conversion module are the same, and the definition of the point numbers is the same.
Further, the CPCI interface module includes an FPGA core circuit, a CPCI communication interface circuit, a first interface circuit, a second interface circuit, and a CPCI connector.
Furthermore, the direct dimming source module comprises a direct dimming light source and a light source control circuit, the light source control circuit generates a suitable driving current to enable the direct dimming source to emit light, the light source control circuit collects the current value of a built-in detector in the direct dimming light source to monitor the output light power of the direct dimming source and adjust the magnitude of the driving current according to the monitored value, and the power stability of the direct dimming source is ensured; the thermistor is integrated in the direct-dimming light source, the light source control circuit completes temperature measurement of the direct-dimming light source through measurement of the resistance value and generates control current to act on a semiconductor cooler TEC built in the direct-dimming light source, and temperature control of the direct-dimming light source is achieved through heating or refrigeration.
Furthermore, after the radio frequency signal is input into the electro-optical conversion module, the radio frequency signal firstly enters an input radio frequency coupler to complete the shunting of the input signal, the output of the input radio frequency coupler is divided into two paths, one path of the output of the input radio frequency coupler enters an input radio frequency power monitoring circuit to complete the power measurement, and the measurement result is input into a first channel of the state acquisition circuit of the electro-optical conversion module in a voltage mode;
the other path of output of the input radio frequency coupler enters an input radio frequency attenuation circuit, the attenuated signal enters an input radio frequency amplification circuit to finish the amplification of the radio frequency signal, an input radio frequency amplification current monitoring circuit monitors the working current input into the radio frequency amplification circuit, and the monitoring result is input to a second channel of the state acquisition circuit of the electro-optical conversion module in a voltage mode;
the amplified radio-frequency signal enters a direct dimming source module, the conversion from an electric signal to an optical signal is realized in the direct dimming source module, and finally the signal is output in the form of an optical signal, the direct dimming source module sends light source power information to a third channel of an electro-optical conversion module state acquisition circuit in the form of voltage, the electro-optical conversion module state acquisition circuit realizes the A/D conversion of the signal, and after the voltage acquisition of the three channels is completed, the acquisition result is transmitted to an electro-optical conversion module board to board interface circuit.
Furthermore, one output accounts for 99% -50% of the input power, and the other output accounts for 1% -50% of the input power.
Furthermore, one path of output accounting for 1% -50% of the input power enters the input radio frequency power monitoring circuit, and one path of output accounting for 99% -50% of the input power enters the input radio frequency attenuation circuit.
Furthermore, after an optical signal is input into the photoelectric conversion module, the optical signal firstly enters the detector module to complete the photoelectric conversion of the input signal, the output of the detector module is divided into two paths, one path of the detector module enters the optical power monitoring circuit and forms a voltage signal through filtering processing, and then the voltage signal is input into a fourth channel of the state acquisition circuit of the photoelectric conversion module;
the other path of output signals in the detector module are transmitted to an output radio frequency amplifying circuit for radio frequency amplification, an output radio frequency amplifying current monitoring circuit monitors the working current of the output radio frequency amplifying circuit, and the monitoring result is transmitted to a fifth channel of the photoelectric conversion module state acquisition circuit in a voltage mode;
the output of the output radio frequency amplifying circuit enters an output radio frequency attenuation circuit for attenuation, the attenuated signal enters an output radio frequency coupler, the output of the output radio frequency coupler is divided into two paths, one path of the output radio frequency coupler enters an output radio frequency power monitoring circuit to complete power measurement, and a measurement result is input to a sixth channel of the photoelectric conversion module state acquisition circuit in a voltage mode;
the other path of the output radio frequency coupler is used as an output signal to realize external output, the photoelectric conversion module state acquisition circuit realizes the A/D conversion of the signal, and the acquisition result is transmitted to the photoelectric conversion module board to board interface circuit after the voltage acquisition of the three channels is completed.
Furthermore, in two paths of output of the detector module, one path of output accounts for 99% -90% of input power, and the other path of output accounts for 1% -10% of input power.
Furthermore, one path of output accounting for 1% -10% of the input power enters the optical power monitoring circuit, and one path of output accounting for 99% -90% of the input power enters the output radio frequency amplifying circuit.
Furthermore, in two paths output by the output radio frequency coupler, one path of output accounts for 99% -50% of input power, and the other path of output accounts for 1% -50% of input power.
Furthermore, one path of output accounting for 1% -50% of the input power enters the output radio frequency power monitoring circuit, and one path of output accounting for 99% -50% of the input power is used as an output signal to realize external output.
Further, the information of the board-to-board interface circuit of the electro-optical conversion module board is transmitted to a first interface circuit of the CPCI interface module, and the information of the board-to-board interface circuit of the electro-optical conversion module board is transmitted to a second interface circuit; the first interface circuit and the second interface circuit transmit information to the FPGA core circuit to complete the collection of state information of the electro-optical conversion module and the photoelectric conversion module, then the information is processed by the FPGA core circuit to form an information transmission data frame, and then the data frame is transmitted to an external upper computer through the CPCI communication interface circuit and the CPCI connector;
after an external upper computer generates an attenuator control command, the command enters an FPGA core circuit after passing through a CPCI connector and a CPCI communication interface circuit to complete information analysis, then the FPGA core circuit generates control information which is transmitted to an electro-optical conversion module board-to-board interface circuit or an electro-optical conversion module board-to-board interface circuit through a first interface circuit or a second interface circuit, and then the control signal reaches an input radio frequency attenuation circuit or an output radio frequency attenuation circuit to complete control over the input or output end attenuation circuit.
Furthermore, the CPCI interface module further comprises a hardware reset circuit, and when the CPCI interface module works abnormally, the hardware reset circuit transmits a reset signal to the FPGA core circuit to enable the FPGA core circuit to complete reset work.
A multifunctional S-band photoelectric transceiving method specifically comprises the following steps:
converting the radio frequency signal into an optical signal through an electro-optical conversion module;
converting the optical signal into a radio frequency signal through a photoelectric conversion module;
the CPCI interface module internally completes the state acquisition of the electro-optical conversion module and the photoelectric conversion module and the control of the attenuation circuit, and externally completes the interaction with an upper computer.
Compared with the prior art, the invention has the advantages that:
(1) the invention adopts a standard CPCI interface, can directly complete interaction with a CPCI mainboard, realizes the setting of working parameters and the acquisition of states, and has large transmission capacity;
(2) the photoelectric conversion module and the photoelectric conversion module are designed consistently in the aspects of installation size, physical position of an interface circuit and point number definition, and can realize interchange, so that the product form is flexible;
(3) the electro-optical conversion module integrates the radio frequency attenuator and the radio frequency amplifier, can adapt to the requirements of different input radio frequency powers and noise coefficient indexes by adjusting the attenuation value of the radio frequency attenuator, and has the advantages of large dynamic range and wide application range of products;
(4) the electro-optical conversion module and the photoelectric conversion module integrate the functions of radio frequency power monitoring and radio frequency amplification current monitoring, and can quickly know the state of the multifunctional S-band photoelectric transceiving system and the power condition of each link in the process of radio frequency signal transmission by matching with an upper computer, so that equipment such as a radio frequency power meter, a frequency spectrum analyzer and the like can be saved when the radio frequency signal transmission is abnormal and needs to be subjected to problem positioning;
(5) the product integration level of the invention is high, 2 radio frequency channels can be accommodated in a 3U CPCI slot position, and when the board card has a fault, the board card is directly replaced integrally, thereby being convenient for maintenance.
Drawings
FIG. 1 is a functional schematic diagram of a multifunctional S-band optoelectronic transceiver system according to the present invention;
fig. 2 is a functional schematic diagram of a direct dimming light source module according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in detail with reference to the accompanying drawings.
A multifunctional S-band photoelectric transceiving system adopts a direct modulation mode to realize radio-frequency signal electro-optic conversion and adopts an intensity detection mode to realize photoelectric conversion of optical signals, and comprises: the electro-optical conversion module 1, the photoelectric conversion module 2 and the CPCI interface module 3 are integrated with a radio frequency power monitoring function, a radio frequency amplification function, a radio frequency attenuation function and an optical power monitoring function, support a CPCI standard interface and have interchangeable positions; the CPCI interface module 3 internally completes the state acquisition of the electro-optical conversion module 1 and the photoelectric conversion module 2 and the control of the attenuation circuit, and externally completes the interaction with an upper computer.
As shown in fig. 1, the electro-optical conversion module 1 includes an input rf coupler 4, an input rf power monitoring circuit 5, an input rf attenuation circuit 6, an input rf amplification circuit 7, an input rf amplification current monitoring circuit 8, a direct dimming power supply module 9, an electro-optical conversion module state acquisition circuit 12, and an electro-optical conversion module board-to-board interface circuit 13.
The photoelectric conversion module 2 comprises a detector module 14, an optical power monitoring circuit 15, an output radio frequency amplifying circuit 16, an output radio frequency amplifying current monitoring circuit 17, an output radio frequency attenuation circuit 18, an output radio frequency coupler 19, an output radio frequency power detecting circuit 20, a photoelectric conversion module state acquisition circuit 21 and a photoelectric conversion module board-to-board interface circuit 22.
In the invention, the installation sizes of the electro-optical conversion module 1 and the photoelectric conversion module 2 are the same, the physical positions of the board-to-board interface circuit 13 of the electro-optical conversion module and the board-to-board interface circuit 22 of the photoelectric conversion module are the same, and the definition of point numbers is the same.
The CPCI interface module 3 includes an FPGA core circuit 23, a CPCI communication interface circuit 25, a first interface circuit 26, a second interface circuit 27, and a CPCI connector 28.
As shown in fig. 2, the direct dimming light source module 9 includes a direct dimming light source 10 and a light source control circuit 11, the light source control circuit 11 generates a suitable driving current to make the direct dimming light source 10 emit light, the light source control circuit 11 collects a current value of a detector built in the direct dimming light source 10, so as to monitor the output light power of the direct dimming light source 10 and adjust the driving current according to the monitored value, thereby ensuring the power stability of the direct dimming light source 10; the thermistor is integrated inside the direct-dimming light source 10, and the light source control circuit 11 measures the resistance value to complete the temperature measurement of the direct-dimming light source 10 and generate a control current, which acts on the semiconductor cooler TEC built in the direct-dimming light source 10 to realize the temperature control of the direct-dimming light source 10 through heating or cooling.
After the radio frequency signal is input into the electro-optical conversion module 1, the radio frequency signal firstly enters the input radio frequency coupler 4 to complete the branching of the input signal, the output of the input radio frequency coupler 4 is divided into two paths, wherein one path of output accounts for 99% -50% of the input power, and the other path of output accounts for 1% -50% of the input power. One path of output accounting for 1% -50% of input power enters an input radio frequency power monitoring circuit 5, and one path of output accounting for 99% -50% of input power enters an input radio frequency attenuation circuit 6.
One path of output in the input radio frequency coupler 4 enters the input radio frequency power monitoring circuit 5 to finish power measurement, and a measurement result is input to a first channel of the electro-optical conversion module state acquisition circuit 12 in a voltage mode;
the other path of output of the input radio frequency coupler 4 enters an input radio frequency attenuation circuit 6, the attenuated signal enters an input radio frequency amplification circuit 7 to finish the amplification of the radio frequency signal, an input radio frequency amplification current monitoring circuit 8 monitors the working current input to the radio frequency amplification circuit 7, and the monitoring result is input to a second channel of an electro-optical conversion module state acquisition circuit 12 in a voltage mode;
the amplified radio frequency signal enters the direct dimming source module 9, the conversion from an electric signal to an optical signal is realized in the direct dimming source module 9, and finally the signal is output in the form of an optical signal, the direct dimming source module 9 sends light source power information to a third channel of the electro-optical conversion module state acquisition circuit 12 in the form of voltage, the electro-optical conversion module state acquisition circuit 12 realizes the A/D conversion of the signal, and after the voltage acquisition of the three channels is completed, the acquisition result is transmitted to the electro-optical conversion module board-to-board interface circuit 13.
The optical signal firstly enters the detector module 14 after being input into the photoelectric conversion module 2, the photoelectric conversion of the input signal is completed, the output of the detector module 14 is divided into two paths, one path of the detector module 14 enters the optical power monitoring circuit 15, a voltage signal is formed through filtering processing, and then the voltage signal is input into a fourth path of the photoelectric conversion module state acquisition circuit 21;
the other output signal in the detector module 14 is transmitted to the output radio frequency amplifying circuit 16 for radio frequency amplification, the output radio frequency amplifying current monitoring circuit 17 monitors the working current of the output radio frequency amplifying circuit 16, and the monitoring result is transmitted to the fifth channel of the photoelectric conversion module state acquisition circuit 21 in a voltage form;
the output of the output radio frequency amplifying circuit 16 enters an output radio frequency attenuation circuit 18 for attenuation, the attenuated signal enters an output radio frequency coupler 19, the output of the output radio frequency coupler 19 is divided into two paths, one path of the output radio frequency coupler 19 enters an output radio frequency power monitoring circuit 20 to complete power measurement, and the measurement result is input to a sixth channel of a photoelectric conversion module state acquisition circuit 21 in a voltage mode;
the other path of the output rf coupler 19 is used as an output signal to realize external output, the photoelectric conversion module state acquisition circuit 21 realizes a/D conversion of the signal, and transmits an acquisition result to the photoelectric conversion module board-to-board interface circuit 22 after voltage acquisition of three channels is completed.
In two paths of the output of the detector module 14, one path of the output accounts for 99% -90% of the input power, and the other path of the output accounts for 1% -10% of the input power. One path of output accounting for 1% -10% of the input power enters the optical power monitoring circuit 15, and one path of output accounting for 99% -90% of the input power enters the output radio frequency amplifying circuit 16.
In two paths output by the output radio frequency coupler 19, one path of output accounts for 99% -50% of input power, and the other path of output accounts for 1% -50% of input power. One path of output accounting for 1% -50% of the input power enters the output radio frequency power monitoring circuit 20, and one path of output accounting for 99% -50% of the input power is used as an output signal to realize external output.
The electro-optical conversion module board transmits the information of the board-to-board interface circuit 13 to the first interface circuit 26 of the CPCI interface module 3, and the electro-optical conversion module board transmits the information of the board-to-board interface circuit 22 to the second interface circuit 27; the first interface circuit 26 and the second interface circuit 27 transmit information to the FPGA core circuit 23 to complete the collection of the state information of the electro-optical conversion module 1 and the photoelectric conversion module 2, then the information is processed by the FPGA core circuit 23 to form an information transmission data frame, and then the data frame is transmitted to an external upper computer through the CPCI communication interface circuit 25 and the CPCI connector 28;
after the external upper computer generates an attenuator control command, the command enters the FPGA core circuit 23 through the CPCI connector 28 and the CPCI communication interface circuit 25 to complete information analysis, then the FPGA core circuit 23 generates control information, the control information is transmitted to the electro-optical conversion module board-to-board interface circuit 13 or the photoelectric conversion module board-to-board interface circuit 22 through the first interface circuit 26 or the second interface circuit 27, and then the control signal reaches the input radio frequency attenuation circuit 6 or the output radio frequency attenuation circuit 18 to complete control over the input or output end attenuation circuit.
The CPCI interface module further comprises a hardware reset circuit 24, when the CPCI interface module 3 works abnormally, the hardware reset circuit 24 transmits a reset signal to the FPGA core circuit 23, and the FPGA core circuit 23 is enabled to complete reset work.
A multifunctional S-band photoelectric transceiving method utilizes the system and comprises the following specific steps:
converting the radio frequency signal into an optical signal through an electro-optical conversion module;
converting the optical signal into a radio frequency signal through a photoelectric conversion module;
the CPCI interface module internally completes the state acquisition of the electro-optical conversion module and the photoelectric conversion module and the control of the attenuation circuit, and externally completes the interaction with an upper computer.
The invention adopts a standard CPCI interface, can directly complete interaction with a CPCI mainboard, realizes the setting of working parameters and the acquisition of states, and has large transmission capacity;
the photoelectric conversion module and the photoelectric conversion module are designed consistently in the aspects of installation size, physical position of an interface circuit and point number definition, and can realize interchange, so that the product form is flexible;
the electro-optical conversion module integrates the radio frequency attenuator and the radio frequency amplifier, can adapt to the requirements of different input radio frequency powers and noise coefficient indexes by adjusting the attenuation value of the radio frequency attenuator, and has the advantages of large dynamic range and wide application range of products;
the electro-optical conversion module and the photoelectric conversion module integrate the functions of radio frequency power monitoring and radio frequency amplification current monitoring, and can quickly know the state of the multifunctional S-band photoelectric transceiving system and the power condition of each link in the process of radio frequency signal transmission by matching with an upper computer, so that equipment such as a radio frequency power meter, a frequency spectrum analyzer and the like can be saved when the radio frequency signal transmission is abnormal and needs to be subjected to problem positioning;
the product integration level of the invention is high, 2 radio frequency channels can be accommodated in a 3U CPCI slot position, and when the board card has a fault, the board card is directly replaced integrally, thereby being convenient for maintenance.
The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.
Claims (17)
1. The utility model provides a multi-functional S frequency channel photoelectricity receiving and dispatching system which characterized in that adopts the direct modulation mode to realize radio frequency signal photoelectric conversion, adopts the intensity detection mode to realize the photoelectric conversion of light signal, includes: the photoelectric conversion module (1), the photoelectric conversion module (2) and the CPCI interface module (3) are integrated with a radio frequency power monitoring function, a radio frequency amplification function and an attenuation function, an optical power monitoring function is integrated, a CPCI standard interface is supported, and the positions of the photoelectric conversion module and the photoelectric conversion module can be interchanged; the CPCI interface module (3) internally completes the state acquisition of the electro-optical conversion module (1) and the photoelectric conversion module (2) and the control of the attenuation circuit, and externally completes the interaction with an upper computer.
2. The multifunctional S-band optoelectronic transceiver system of claim 1, wherein: the electro-optical conversion module (1) comprises an input radio frequency coupler (4), an input radio frequency power monitoring circuit (5), an input radio frequency attenuation circuit (6), an input radio frequency amplifying circuit (7), an input radio frequency amplifying current monitoring circuit (8), a direct dimming source module (9), an electro-optical conversion module state acquisition circuit (12) and an electro-optical conversion module board-to-board interface circuit (13).
3. The multifunctional S-band optoelectronic transceiver system of claim 2, wherein: the photoelectric conversion module (2) comprises a detector module (14), a light power monitoring circuit (15), an output radio frequency amplification circuit (16), an output radio frequency amplification current monitoring circuit (17), an output radio frequency attenuation circuit (18), an output radio frequency coupler (19), an output radio frequency power detection circuit (20), a photoelectric conversion module state acquisition circuit (21) and a photoelectric conversion module board-to-board interface circuit (22).
4. The multifunctional S-band optoelectronic transceiver system of claim 3, wherein: the installation sizes of the electro-optical conversion module (1) and the photoelectric conversion module (2) are the same, the physical positions of the board-to-board interface circuit (13) of the electro-optical conversion module and the board-to-board interface circuit (22) of the photoelectric conversion module are the same, and the definition of point numbers is the same.
5. The multifunctional S-band optoelectronic transceiver system of claim 3, wherein: the CPCI interface module (3) comprises an FPGA core circuit (23), a CPCI communication interface circuit (25), a first interface circuit (26), a second interface circuit (27) and a CPCI connector (28).
6. The multifunctional S-band optoelectronic transceiver system of claim 2, wherein: the direct dimming light source module (9) comprises a direct dimming light source (10) and a light source control circuit (11), the light source control circuit (11) generates a proper driving current to enable the direct dimming light source (10) to emit light, the light source control circuit (11) collects the current value of a built-in detector in the direct dimming light source (10), monitoring of the output light power of the direct dimming light source (10) is achieved, the size of the driving current is adjusted according to the monitored value, and the power stability of the direct dimming light source (10) is guaranteed; the thermistor is integrated in the direct-adjusting light source (10), the light source control circuit (11) completes temperature measurement of the direct-adjusting light source (10) through measurement of the resistance value and generates control current, the control current acts on a semiconductor cooler TEC built in the direct-adjusting light source (10), and temperature control of the direct-adjusting light source (10) is achieved through heating or cooling.
7. The multifunctional S-band optoelectronic transceiver system of claim 2, wherein: after a radio frequency signal is input into the electro-optical conversion module (1), the radio frequency signal firstly enters the input radio frequency coupler (4) to complete the shunting of the input signal, the output of the input radio frequency coupler (4) is divided into two paths, one path of the output of the input radio frequency coupler (4) enters the input radio frequency power monitoring circuit (5) to complete the power measurement, and the measurement result is input into a first channel of the state acquisition circuit (12) of the electro-optical conversion module in a voltage mode;
the other path of output of the input radio frequency coupler (4) enters an input radio frequency attenuation circuit (6), the attenuated signal enters an input radio frequency amplification circuit (7) to finish the amplification of the radio frequency signal, an input radio frequency amplification current monitoring circuit (8) monitors the working current input to the radio frequency amplification circuit (7), and the monitoring result is input to a second channel of an electro-optical conversion module state acquisition circuit (12) in a voltage mode;
the amplified radio frequency signal enters a direct dimming source module (9), conversion from an electric signal to an optical signal is realized in the direct dimming source module (9), and finally the signal is output in the form of an optical signal, the direct dimming source module (9) sends light source power information to a third channel of an electro-optical conversion module state acquisition circuit (12) in the form of voltage, the electro-optical conversion module state acquisition circuit (12) realizes A/D conversion of the signal, and after voltage acquisition of three channels is completed, an acquisition result is transmitted to an electro-optical conversion module board-to-board interface circuit (13).
8. The multifunctional S-band optoelectronic transceiver system of claim 7, wherein: wherein one output accounts for 99% -50% of the input power, and the other output accounts for 1% -50% of the input power.
9. The multifunctional S-band optoelectronic transceiver system of claim 8, wherein: one path of output accounting for 1% -50% of input power enters an input radio frequency power monitoring circuit (5), and one path of output accounting for 99% -50% of input power enters an input radio frequency attenuation circuit (6).
10. The multifunctional S-band optoelectronic transceiver system of claim 3, wherein: after an optical signal is input into the photoelectric conversion module (2), the optical signal firstly enters the detector module (14) to complete the photoelectric conversion of the input signal, the output of the detector module (14) is divided into two paths, one path of the detector module (14) enters the optical power monitoring circuit (15) and is filtered to form a voltage signal, and then the voltage signal is input into a fourth channel of the photoelectric conversion module state acquisition circuit (21);
the other path of output signals in the detector module (14) are transmitted to an output radio frequency amplification circuit (16) for radio frequency amplification, an output radio frequency amplification current monitoring circuit (17) monitors the working current of the output radio frequency amplification circuit (16), and the monitoring result is transmitted to a fifth channel of a photoelectric conversion module state acquisition circuit (21) in a voltage mode;
the output of the output radio frequency amplifying circuit (16) enters an output radio frequency attenuation circuit (18) for attenuation, the attenuated signal enters an output radio frequency coupler (19), the output of the output radio frequency coupler (19) is divided into two paths, one path of the output radio frequency coupler (19) enters an output radio frequency power monitoring circuit (20), power measurement is completed, and a measurement result is input to a sixth channel of a photoelectric conversion module state acquisition circuit (21) in a voltage mode;
the other path of the output radio frequency coupler (19) is used as an output signal to realize external output, the photoelectric conversion module state acquisition circuit (21) realizes the A/D conversion of the signal, and after the voltage acquisition of three channels is completed, the acquisition result is transmitted to the photoelectric conversion module board to board interface circuit (22).
11. The multifunctional S-band optoelectronic transceiver system of claim 10, wherein: in two paths output by the detector module (14), one path of output accounts for 99% -90% of input power, and the other path of output accounts for 1% -10% of input power.
12. The multifunctional S-band optoelectronic transceiver system of claim 11, wherein: one path of output accounting for 1% -10% of input power enters an optical power monitoring circuit (15), and one path of output accounting for 99% -90% of input power enters an output radio frequency amplifying circuit (16).
13. The multifunctional S-band optoelectronic transceiver system of claim 10, wherein: in two paths output by the output radio frequency coupler (19), one path of output accounts for 99% -50% of input power, and the other path of output accounts for 1% -50% of input power.
14. The multifunctional S-band optoelectronic transceiver system of claim 13, wherein: one path of output accounting for 1% -50% of the input power enters an output radio frequency power monitoring circuit (20), and one path of output accounting for 99% -50% of the input power is used as an output signal to realize external output.
15. The multifunctional S-band optoelectronic transceiver system of claim 5, wherein: the information of the electro-optical conversion module board-to-board interface circuit (13) is transmitted to a first interface circuit (26) of the CPCI interface module (3), and the information of the photoelectric conversion module board-to-board interface circuit (22) is transmitted to a second interface circuit (27); the first interface circuit (26) and the second interface circuit (27) transmit information to the FPGA core circuit (23) to complete the collection of state information of the electro-optical conversion module (1) and the photoelectric conversion module (2), then the information is processed by the FPGA core circuit (23) to form an information transmission data frame, and then the data frame is transmitted to an external upper computer through the CPCI communication interface circuit (25) and the CPCI connector (28);
after an attenuator control command is generated by an external upper computer, the command enters an FPGA core circuit (23) through a CPCI connector (28) and a CPCI communication interface circuit (25) to complete information analysis, then the FPGA core circuit (23) generates control information which is transmitted to an electro-optical conversion module board-to-board interface circuit (13) or an optical-electrical conversion module board-to-board interface circuit (22) through a first interface circuit (26) or a second interface circuit (27), and then the control signal reaches an input radio frequency attenuation circuit (6) or an output radio frequency attenuation circuit (18) to complete control over an input or output end attenuation circuit.
16. The multifunctional S-band optoelectronic transceiver system of claim 5, wherein: the CPCI interface module further comprises a hardware reset circuit (24), when the CPCI interface module (3) works abnormally, the hardware reset circuit (24) transmits a reset signal to the FPGA core circuit (23), and the FPGA core circuit (23) completes reset work.
17. A multifunctional S-band optoelectronic transceiver method, characterized in that, with the system of claim 1, the specific steps include:
converting the radio frequency signal into an optical signal through an electro-optical conversion module;
converting the optical signal into a radio frequency signal through a photoelectric conversion module;
the CPCI interface module internally completes the state acquisition of the electro-optical conversion module and the photoelectric conversion module and the control of the attenuation circuit, and externally completes the interaction with an upper computer.
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| US20100021183A1 (en) * | 2008-07-28 | 2010-01-28 | Emcore Corporation | RF Signal Power Regulation in Optical Transmitters |
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