A method and device for optimizing power consumption of an optoelectronic signal processing system for an underwater small platform

Abstract

The present invention discloses a method and device for optimizing power consumption of an optoelectronic signal processing system of an underwater small platform, which mainly include a light source, an isolator, a 1:99 coupler, a power monitoring feedback module, an optical intensity modulator, an optical phase modulation module, an optical amplifier, a demodulator, a test array, a detection module, a demodulation module, a signal processing module, a DC / DC switching power supply, and a power management module. During the light source preheating period, the stability of the optical power output by the light source through the isolator is monitored. When the optical power of the light source fed back by the power monitoring module is stable within the required range, a feedback instruction is given to the power management module, and then the power management module turns on the power supply of the remaining modules, and the system can start normal operation at this time. This method can effectively reduce the power consumption of the optoelectronic signal system of the optical fiber hydrophone of the small platform, thereby improving the endurance of the equipment platform, has good engineering practical value, and can be tried on various types of underwater miniaturized platforms.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical fiber sensing, and specifically relates to a method and a device for optimizing power consumption of an optoelectronic signal processing system of an underwater small platform. Background Art

[0002] At present, fiber optic hydrophones have been widely used in shore-based sonar systems and towed sonar systems of large surface platforms, but have not yet been used in large-scale engineering applications on miniaturized underwater platforms. The application of fiber optic hydrophones in miniaturized platforms is of great significance, especially in the fields of ocean exploration and environmental monitoring. In the application of miniaturized platforms, the low-power design of the fiber optic hydrophone demodulation system is very necessary, which is directly related to the endurance of the equipment platform, thereby affecting the maneuverability and concealment of the platform, and at the same time affecting the manufacturing cost and maintenance cost of the system. Therefore, how to better optimize the power design of the fiber optic hydrophone demodulation system is very critical. In response to the above problems, there is currently no relevant research on the power optimization of the fiber optic demodulation system for small underwater platforms. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a fiber optic demodulation system and power consumption optimization method suitable for a small underwater platform. This method can effectively reduce the power consumption of the demodulation system, thereby improving the endurance of the equipment platform, and has good engineering practical value.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a power consumption optimization device for an underwater small platform optoelectronic signal processing system, the optoelectronic signal processing system comprising a power consumption optimization device and a light source, an isolator, an optical pulse modulator, an optical phase modulation module, an optical amplifier, a demodulator, a test array, a detection module, a demodulation module, a signal processing module, and a DC / DC switching power supply connected to the power consumption optimization device; the power consumption optimization device comprises a 1:99 coupler, a power monitoring feedback module, and a power management module; all of the above modules themselves adopt a low-power design, the light emitted by the light source passes through the isolator and is connected to the com port of the 1:99 coupler, the output of the 1% port of the coupler is connected to the detector of the power monitoring feedback module, and the 99% port of the coupler is connected to the input of the optical intensity modulator, the optical intensity modulator modulates the continuous light into pulse light, and then delays the pulse light into double pulse light through the optical phase modulation module, and then amplifies the optical power through the optical amplifier and demodulates the optical power before injecting it into the array, the light returned by the array is photoelectrically converted by the detection module and transmitted to the demodulation module to complete signal demodulation, and the signal processing module completes the real-time detection and processing of the optical fiber array signal; the power monitoring module and the power management module can realize mutual feedback through serial port communication.

[0005] Preferably, the power supply of the light source, power monitoring module, light intensity modulator, optical amplifier, detection module, demodulation module, and signal processing module are all controlled individually by a DC / DC switching power supply through a power management module; at the same time, the power-on sequence and power-on / power-off duration of each module can be controlled.

[0006] Preferably, the light source used in the fiber optic hydrophone system is a semiconductor laser with a narrow line width. When the system is turned on, the light source needs to be stable. When the system is powered on, the light source and the power detection module are powered on in a limited manner. The light power stability of the light source output is monitored by using a spectroscopic detection method. If the light power of the light source fed back by the power monitoring module is stable within the required range, the power monitoring module sends a light source stabilization instruction to the power management module, and the power management module starts the power supply of the remaining modules. At this time, the system can start normal operation.

[0007] A power consumption optimization method for an underwater small platform optoelectronic signal processing system is applied to a power consumption optimization device for an underwater small platform optoelectronic signal processing system, and the steps are as follows:

[0008] S1. The light emitted by the light source passes through the isolator and is detected by spectrophotometry. The output of the isolator is connected to the com port of the 1:99 coupler, the output of the 1% port is connected to the power monitoring module, and the 99% port is connected to the input of the light intensity modulator;

[0009] S2, the optical intensity modulator modulates the continuous light into pulse light, and then passes through the fiber interferometer to delay the pulse light into double pulse light. The output of the interferometer then passes through the optical amplifier and demodulator to amplify the optical power and demodulate the light before injecting it into the array; the light returned by the array is converted into photoelectricity by the detection module and then transmitted to the demodulation module to complete signal demodulation;

[0010] S3. Photodiode detectors or other similar photodetectors are used in the optical power monitoring module to convert optical signals into corresponding current or voltage signals, and the processed electrical signals are converted into corresponding optical power values, while ensuring the accuracy and stability of the measurement.

[0011] Preferably, in step S3, since the light output by the light source is direct current light, the optical power is measured by calculating the average optical power using the photovoltage, and the power is calculated using the following formula:

[0012] The photovoltage output by the photodetector is V, and R is the responsivity of the photodetector, which depends on the material and structural factors of the photodetector. R is determined by calibration and measurement.

[0013] Preferably, the light source used in the system is a narrow-linewidth semiconductor laser, which takes a certain amount of time to stabilize. Using the spectroscopic detection method, the light from the 1% port is input to the detector of the optical power monitoring module, which monitors the stability of the optical power output of the light source.

[0014] Preferably, since the power source of the underwater platform is limited, in the entire system, the power supply to each supply module of the system is output by the DC / DC switching power supply to the power management module, and the power consumption optimization control of the system is achieved by the power management board.

[0015] Preferably, the entire system needs to give priority to powering on the light source and the power monitoring module. If the average optical power of the light source fed back by the power monitoring module is stable within the required range, the power monitoring module sends a power-on instruction for the remaining modules of the entire system to the power management module, and the system can start normal operation.

[0016] Preferably, the power management module can redistribute power consumption according to the needs of actual modules and control the power-on sequence of the entire system more accurately. At the same time, for underwater platforms working in stages, the system power-on time and power-off time can be controlled according to needs, thereby achieving the purpose of power consumption optimization.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The designed light source power monitoring module adopts the spectroscopic detection method, which can accurately feedback the stabilization time of the light source output optical power and feed back the stabilization result to the power management module;

[0019] 2. Reduce the working time of other modules during the light source preheating period and increase the service life of other modules;

[0020] 3. The designed power consumption optimized fiber optic hydrophone demodulation system manages the power supply, reduces the power consumption waste during the light source preheating period, saves energy for miniaturized underwater platforms, and is of great significance for engineering implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Block diagram of the optoelectronic signal processing system for a small underwater platform

[0022] Figure 2 System power consumption optimization device composition block diagram

[0023] Figure 3 Optimizing startup flow chart for power consumption

[0024] Figure 4 Comparison chart before and after system power consumption optimization

[0025] Explanation of the reference numerals: light source 1, isolator 2, power consumption optimization device 3, 1:99 coupler 301, power monitoring feedback module 302, power management module 303, optical pulse modulator 4, optical phase modulation module 5, optical amplifier 6, demodulator 7, test array 8, detection module 9, demodulation module 10, signal processing module 11, DC / DC switching power supply 12. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1

[0028] The present invention provides a method and device for optimizing power consumption of an underwater small platform optoelectronic signal processing system. Figure 1 , Figure 2 and Figure 3 The present invention is introduced in detail.

[0029] The light emitted by the light source 1 passes through the isolator 2 and is detected by spectroscopic detection. The output of the isolator 2 is connected to the com port of the 1:99 coupler 301, the 1% port of the 1:99 coupler 301 is connected to the detector of the power monitoring feedback module 302, and the 99% port of the 1:99 coupler 301 is connected to the input of the optical pulse modulator 4.

[0030] The optical pulse modulator 4 modulates the continuous light into pulse light, and then delays the pulse light into double pulse light through the optical phase modulation module 5. The output of the optical phase modulation module 5 is connected to the input of the optical amplifier 6, and the output of the optical amplifier 6 is connected to the com port of the demodulator 7. The light output from the pass port of the demodulator is injected into the optical fiber hydrophone array 8.

[0031] The interference light signal returned by the fiber optic hydrophone array 8 is converted into photoelectric signals and sampled by AD by the detection module 9, and then transmitted to the demodulation module 9 to complete the single-channel signal demodulation of all array elements. The demodulated signal is then processed by the signal processing module 10 to complete the real-time detection of the array signal.

[0032] The optical power monitoring module 302 uses a photodiode detector or other similar photodetectors to convert the optical signal into a corresponding current or voltage signal, and the processed electrical signal is converted into a corresponding optical power value, while ensuring the accuracy and stability of the measurement. Since the light output by the light source is direct current light, the optical power measurement here adopts the calculation method of calculating the average optical power by photovoltage. The power calculation adopts the following formula:

[0033] The photovoltage output by the photodetector is V, and R is the responsivity of the photodetector, which depends on factors such as the material and structure of the photodetector. R is determined through calibration and measurement.

[0034] The light source 1 used in this system is a narrow-linewidth semiconductor laser. It takes a certain amount of time for the laser to stabilize. The light from the 1% port of the coupler is input to the detector of the optical power monitoring feedback module 302 using the spectroscopic detection method. The optical power monitoring feedback module 302 monitors the stability of the optical power output by the light source.

[0035] Since the power source of the underwater platform is limited, in the entire optoelectronic signal processing system, the power supply for the module is output by the DC / DC switching power supply 12 to the power management module 303, and the system's power-on sequence, power-on / power-off time control and other functions are all implemented by the power management module 303.

[0036] The entire system of the present invention needs to give priority to powering on the light source 1 and the power monitoring feedback module 302. If the average optical power of the light source fed back by the power monitoring module 302 is stable within the required range, the power monitoring module 302 sends an instruction feedback to the power management module 303, and the power management module 303 turns on the power-on instructions for the remaining modules of the system. At this time, the system can start normal operation.

[0037] The power management module 303 can reallocate power consumption according to the needs of the actual modules and more accurately control the power-on sequence of the entire system. At the same time, for underwater platforms working in stages, the system power-on time and power-off time can be controlled according to needs, thereby achieving the purpose of power consumption optimization.

[0038] Example 2

[0039] Constructed as Figure 1 and Figure 2 The power consumption optimization device of the optoelectronic signal processing system of the underwater small platform shown in the figure is as follows Figure 3 The specific implementation process steps are as follows: the power management module first powers on the light source and the power monitoring feedback module. This system mainly considers the stabilization time of the light source. The light source stabilization feedback instruction of the power monitoring module is about 1 minute after power-on, that is, it takes about 1 minute for the light source to stabilize. After the light source stabilizes for 1 minute, the remaining modules start working. According to actual needs, the system requires working for 10 minutes, powering off for 10 minutes, and working in a cycle. After testing, Figure 4 This is a comparison of the power consumption of the system before and after optimization within one hour. Under this test condition, the power optimization increased by 10.2%.

[0040] Although specific embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power consumption optimization device for an underwater small platform optoelectronic signal processing system, characterized in that: The optoelectronic signal processing system comprises a power consumption optimization device and a light source, an isolator, an optical pulse modulator, an optical phase modulation module, an optical amplifier, a demodulator, a test array, a detection module, a demodulation module, a signal processing module, and a DC / DC switching power supply connected to the power consumption optimization device; the power consumption optimization device comprises a 1:99 coupler, a power monitoring feedback module, and a power management module, all of which are designed with low power consumption. The light emitted by the light source is connected to the COM port of the 1:99 coupler after passing through the isolator, the output of the 1% port of the coupler is connected to the detector of the power monitoring feedback module, and the 99% port of the coupler is connected to the input of the optical intensity modulator. The optical intensity modulator modulates the continuous light into pulse light, and then delays the pulse light into double pulse light through the optical phase modulation module, and then amplifies the optical power through the optical amplifier and demodulates the wave before injecting it into the array. The light returned by the array is converted by the detection module into photoelectricity and then transmitted to the demodulation module to complete signal demodulation. The signal processing module completes the real-time detection and processing of the optical fiber array signal; the power monitoring module and the power management module can realize mutual feedback through serial communication.

2. The power consumption optimization device of the optoelectronic signal processing system of a small underwater platform according to claim 1, characterized in that: The power supply of the light source, power monitoring module, light intensity modulator, optical amplifier, detection module, demodulation module and signal processing module are all controlled by a DC / DC switching power supply through a power management module; at the same time, the power-on sequence and power-on / power-off duration of each module can be controlled.

3. The power consumption optimization device of the optoelectronic signal processing system of a small underwater platform according to claim 1 is characterized in that: The light source used in the fiber optic hydrophone system is a semiconductor laser with a narrow line width. When the system is turned on, the light source needs to be stable. When the system is powered on, the light source and the power detection module are powered on in a limited manner. The light power stability of the light source output is monitored by using a spectroscopic detection method. If the light power of the light source fed back by the power monitoring module is stable within the required range, the power monitoring module sends a light source stability instruction to the power management module, and the power management module starts the power supply of the remaining modules. At this time, the system can start normal operation.

4. A method for optimizing power consumption of an underwater small platform optoelectronic signal processing system, applied to a power consumption optimization device for an underwater small platform optoelectronic signal processing system according to claim 1, characterized in that: Here are the steps: S1. The light emitted by the light source passes through the isolator and is detected by spectrophotometry. The output of the isolator is connected to the com port of the 1:99 coupler, the output of the 1% port is connected to the power monitoring module, and the 99% port is connected to the input of the light intensity modulator; S2, the optical intensity modulator modulates the continuous light into pulse light, and then passes through the fiber interferometer to delay the pulse light into double pulse light. The output of the interferometer then passes through the optical amplifier and demodulator to amplify the optical power and demodulate the light before injecting it into the array; the light returned by the array is converted into photoelectricity by the detection module and then transmitted to the demodulation module to complete signal demodulation; S3. Photodiode detectors or other similar photodetectors are used in the optical power monitoring module to convert optical signals into corresponding current or voltage signals, and the processed electrical signals are converted into corresponding optical power values, while ensuring the accuracy and stability of the measurement.

5. The method for optimizing power consumption of an underwater small platform optoelectronic signal processing system according to claim 4, characterized in that: In step S3, since the light output by the light source is direct current light, the optical power is measured by calculating the average optical power using the photovoltage, and the power is calculated using the following formula: The photovoltage output by the photodetector is V, and R is the responsivity of the photodetector, which depends on the material and structural factors of the photodetector. R is determined by calibration and measurement.

6. The method for optimizing power consumption of an underwater small platform optoelectronic signal processing system according to claim 4, characterized in that: The light source used in the system is a narrow-linewidth semiconductor laser. It takes a certain amount of time for the laser to stabilize. The light from the 1% port is input to the detector of the optical power monitoring module using the spectroscopic detection method. The optical power monitoring module monitors the stability of the optical power output of the light source.

7. The method for optimizing power consumption of an underwater small platform optoelectronic signal processing system according to claim 6, characterized in that: Since the power source of the underwater platform is limited, in the entire system, the power supply to each module of the system is output by the DC / DC switching power supply to the power management module, and the power consumption optimization control of the system is realized by the power management board.

8. The method for optimizing power consumption of an underwater small platform optoelectronic signal processing system according to claim 6, characterized in that: The entire system needs to give priority to powering on the light source and the power monitoring module. If the average optical power of the light source fed back by the power monitoring module is stable within the required range, the power monitoring module will send a power-on instruction for the remaining modules of the entire system to the power management module. At this time, the system can start normal operation.

9. The method for optimizing power consumption of an underwater small platform optoelectronic signal processing system according to claim 6, characterized in that: The power management module can redistribute power consumption according to the actual needs of the modules and control the power-on sequence of the entire system more accurately. At the same time, for underwater platforms working in stages, the system power-on time and power-off time can be controlled according to needs, thus achieving the purpose of power consumption optimization.

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