CN110611530B - Optical fiber fault determination method and device and photovoltaic centrifuge equipment - Google Patents
Optical fiber fault determination method and device and photovoltaic centrifuge equipment Download PDFInfo
- Publication number
- CN110611530B CN110611530B CN201910828806.2A CN201910828806A CN110611530B CN 110611530 B CN110611530 B CN 110611530B CN 201910828806 A CN201910828806 A CN 201910828806A CN 110611530 B CN110611530 B CN 110611530B
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- pulse signal
- duty cycle
- received
- determining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000000835 fiber Substances 0.000 claims abstract description 19
- 230000000630 rising effect Effects 0.000 claims description 14
- 238000004590 computer program Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- 230000006870 function Effects 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Images
Classifications
-
- 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
- H04B10/073—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an out-of-service signal
- H04B10/0731—Testing or characterisation of optical devices, e.g. amplifiers
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The invention provides an optical fiber fault determination method, an optical fiber fault determination device and a photovoltaic centrifuge device, wherein the method comprises the following steps: receiving a pulse signal with a fixed duty ratio sent by a mainboard through an optical fiber; determining whether a duty cycle of the received pulse signal is equal to the fixed duty cycle; determining the fiber fault if it is determined that the duty cycle of the received pulse signal is not equal to the fixed duty cycle. By the aid of the scheme, the problem that the existing optical fiber faults cannot find the faults of the frequency converter in the unit in time is solved, and the technical effect of effectively finding the optical fiber faults in time and protecting unit equipment is achieved.
Description
Technical Field
The invention relates to the technical field of equipment control, in particular to an optical fiber fault determining method and device and photovoltaic centrifuge equipment.
Background
The photovoltaic centrifuge control system is a common high-power controller system, and the working principle of the control system is as follows: the DSP sends out a pulse signal to control the main board to amplify the pulse signal, and after the pulse is amplified. The control signal is transmitted to the drive mainboard by using optical fibers or electric wires, and the IGBT drive board controls an IGBT (Insulated Gate Bipolar Transistor) module by the signal after receiving the drive signal, so that the IGBT module can work orderly.
The existing method generally uses an optical fiber to transmit pulse signals to complete signal transmission from a DSP mainboard to an IGBT drive board. However, in the use of the existing technical scheme of the IGBT driver board, the optical fiber is easy to bend during installation, when the optical fiber is bent too much, a PWM (Pulse width modulation) signal is easy to attenuate, and when the attenuated PWM Pulse controls the IGBT, the frequency converter can report an overcurrent or overvoltage fault.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides an optical fiber fault determination method and device and photovoltaic centrifuge equipment, and aims to solve the problem that the existing optical fiber fault cannot be found in time to cause the fault of a frequency converter in a unit.
In one aspect, a method for determining a fiber fault is provided, including:
receiving a pulse signal with a fixed duty ratio sent by a mainboard through an optical fiber;
determining whether a duty cycle of the received pulse signal is equal to the fixed duty cycle;
determining the fiber fault if it is determined that the duty cycle of the received pulse signal is not equal to the fixed duty cycle.
In one embodiment, determining whether the duty cycle of the received pulse signal is equal to the fixed duty cycle comprises:
acquiring the rising edge and the falling edge of the received pulse signal;
calculating a pulse period and duration of a high level according to the rising edge and the falling edge;
determining the duty ratio of the received pulse signal according to the pulse period and the duration of the high level;
determining whether a duty cycle of the received pulse signal is equal to the fixed duty cycle.
In one embodiment, the method for receiving the pulse signal with the fixed duty ratio sent by the main board through the optical fiber comprises the following steps:
after the unit is powered on, a pulse signal with a fixed duty ratio sent by the mainboard through the optical fiber is received through the driving board.
In one embodiment, after determining the fiber fault, the method further comprises:
returning indication information for representing optical fiber faults to the main board;
and the main board displays the indication information of the optical fiber fault.
In one embodiment, the fiber fault includes at least one of: and the optical fiber is damaged and the bending of the optical fiber exceeds a preset threshold value.
In one embodiment, after determining whether the duty cycle of the received pulse signal is equal to the fixed duty cycle, the method further comprises:
and under the condition that the duty ratio of the received pulse signal is determined to be equal to the fixed duty ratio, the main board sends the pulse signal to the driving board through the optical fiber.
In one embodiment, the drive plate includes at least one of: rectifier module IGBT drive plate, contravariant module IGBT drive plate.
In another aspect, an optical fiber fault determining apparatus is provided, including:
the receiving module is used for receiving a pulse signal with a fixed duty ratio sent by the mainboard through an optical fiber;
a first determining module for determining whether a duty cycle of the received pulse signal is equal to the fixed duty cycle;
and the second determining module is used for determining the optical fiber fault under the condition that the duty ratio of the received pulse signal is determined not to be equal to the fixed duty ratio.
In one embodiment, the second determining module comprises:
an acquisition unit, configured to acquire a rising edge and a falling edge of the received pulse signal;
a calculating unit for calculating a pulse period and a duration of a high level according to the rising edge and the falling edge;
a first determining unit, configured to determine a duty cycle of the received pulse signal according to the pulse period and a duration of a high level;
a second determining unit for determining whether the duty ratio of the received pulse signal is equal to the fixed duty ratio.
In yet another aspect, a photovoltaic centrifuge apparatus is provided, comprising: the optical fiber fault determination device is described above.
In yet another aspect, a network device is provided, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
In a further aspect, a non-transitory computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the above-mentioned method.
In the above embodiment, the main board sends the pulse signal with a fixed duty ratio through the optical fiber, and then judges whether the duty ratio of the pulse signal received by the receiving end changes, if so, the fiber fault is indicated, so that the line transmission fault can be found in advance. By the aid of the scheme, the problem that the existing optical fiber faults cannot find the faults of the frequency converter in the unit in time is solved, and the technical effect of effectively finding the optical fiber faults in time and protecting unit equipment is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a method flow diagram of a method of fiber fault determination according to an embodiment of the present invention;
FIG. 2 is a diagram of a fiber-optic transmission PWM signal distribution according to an embodiment of the present invention;
FIG. 3 is a flow chart of system operation mode determination according to an embodiment of the present invention;
FIG. 4 is a logic diagram of a fiber damage determination according to an embodiment of the present invention;
fig. 5 is a block diagram of a configuration of an optical fiber fault determination apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
Aiming at the existing pulse signal transmission by using the optical fiber, the optical fiber is easy to bend in the installation process, when the optical fiber wire is bent too much, the signal is easy to attenuate, and when the attenuated pulse signal is used for controlling the driving plate, the frequency converter can report the overcurrent or overvoltage fault. To this end, in this example, a method for determining a fiber fault is provided, as shown in fig. 1, which may include the steps of:
step 101: receiving a pulse signal with a fixed duty ratio sent by a mainboard through an optical fiber;
step 102: determining whether a duty cycle of the received pulse signal is equal to the fixed duty cycle;
step 103: determining the fiber fault if it is determined that the duty cycle of the received pulse signal is not equal to the fixed duty cycle.
In the above example, the main board sends a pulse signal with a fixed duty ratio through the optical fiber, and then judges whether the duty ratio of the pulse signal received by the receiving end changes, if so, the optical fiber fault is indicated, so that the line transmission fault can be found in advance. By the aid of the scheme, the problem that the existing optical fiber faults cannot find the faults of the frequency converter in the unit in time is solved, and the technical effect of effectively finding the optical fiber faults in time and protecting unit equipment is achieved.
Namely, whether the optical fiber has faults can be detected through the scheme, so that the frequency converter does not need to report the overvoltage or overcurrent faults after the optical fiber is started, and the faults can be reported once the optical fiber is electrified, so that the effect of determining the optical fiber faults in advance is achieved.
Specifically, when determining whether the duty ratio of the received pulse signal is equal to the fixed duty ratio, the duty ratio of the received pulse signal needs to be determined first, and the duty ratio of the received pulse signal may be determined according to the following steps:
s1: acquiring a rising edge and a falling edge of a received pulse signal;
s2: calculating a pulse period and duration of a high level according to the rising edge and the falling edge;
s3: determining the duty ratio of the received pulse signal according to the pulse period and the duration of the high level;
s4: determining whether a duty cycle of the received pulse signal is equal to the fixed duty cycle.
That is, the pulse period and the duration of the high level of the pulse signal are determined by the rising edge and the falling edge of the pulse signal, and then the duty ratio is determined based on the ratio of the two, thereby achieving determination of the duty ratio of the received pulse signal.
In order to determine the duty ratio of the received pulse signal, the duty ratio may be determined by the driving board, that is, the driving board has a function of determining the duty ratio, so that after the unit is powered on, the driving board receives the pulse signal with a fixed duty ratio sent by the main board through the optical fiber. In this way, an efficient determination of the duty cycle of the received signal can be achieved without the need for additional components.
After determining the optical fiber fault, the indication information for characterizing the optical fiber fault can be returned to the main board, so that the main board can display the indication information of the optical fiber fault, and thus, the operation and maintenance personnel can find and know the optical fiber fault in time, wherein the optical fiber fault may include but is not limited to at least one of the following: and the optical fiber is damaged and the bending of the optical fiber exceeds a preset threshold value.
If the duty ratio of the received pulse signal is equal to the fixed duty ratio, the optical fiber is normal, no fault occurs, and the unit can normally operate under the condition that the duty ratio of the received pulse signal is determined to be equal to the fixed duty ratio, namely, the main board can send the pulse signal to the drive board through the optical fiber to realize the control of the drive board, so that the control of the equipment unit is realized. The drive board may include, but is not limited to, at least one of: rectifier module IGBT drive plate, contravariant module IGBT drive plate.
The above method is described below with reference to a specific example, however, it should be noted that the specific example is only for better describing the present application and is not to be construed as limiting the present application.
Aiming at the existing situation that pulse signals are generally transmitted by using optical fibers, the signals from a DSP mainboard to an IGBT drive board are transmitted. However, in the use of the existing technical scheme of the IGBT drive board, the optical fiber is easy to bend in the installation process, when the optical fiber is bent too much, the PWM signal is easy to attenuate, and when the attenuated PWM pulse controls the IGBT, the frequency converter can report an overcurrent or overvoltage fault.
In this example, a driving control system capable of detecting the bending of the optical fiber line and the error determination of the PWM signal transmission process in advance is provided, in which the driving board is a driving board having a function of detecting the pulse width. Specifically, the pulse width of the PWM is detected by using the pulse detection function of the drive board, and the pulse width is submitted to the system main control after the drive board detects the pulse width, so that the main control can pre-judge whether the optical fiber line is bent or not or whether a problem exists on a PWM transmission signal link or not in advance. After the problem is detected in advance, the frequency converter does not need to report the overvoltage or overcurrent fault after the power is turned on, so that the fault can be reported after the power is turned on, and the condition that the optical fiber line is damaged or excessively bent is pre-judged in advance.
Specifically, in this example, in combination with a situation that an existing optical fiber line of the photovoltaic centrifuge is easily bent to cause signal attenuation, a mode determination of whether a tape optical fiber is normal is provided, and a hardware control implementation scheme with the mode determination is provided, where, as shown in fig. 2, the photovoltaic centrifuge may include: the rectifier module and the inverter module adopt modular design and both use optical fibers to transmit PWM signals.
After the optical fiber failure judging mode of the unit is added, the starting sequence of the unit is as shown in fig. 3, after the unit is powered on, whether the optical fiber is normal or not is judged, and the unit runs in the normal mode under the condition that the optical fiber is determined to be normal. When determining whether the optical fiber is normal, the method can determine according to the flow shown in fig. 4, that is, after the unit is powered on, the control main board sends out a pulse with a fixed duty ratio to control the system, because the duty ratio of a specific sent signal is fixed, after the specific sent signal is transmitted to the drive board through the optical fiber, the drive board determines whether the duty ratio of the received pulse is a preset value (i.e., the fixed duty ratio), and if not, it determines that the optical fiber is in a transmission error, thereby determining that the optical fiber is damaged; when the duty ratio is determined to be consistent with the preset value, the optical fiber transmission value is correct, and the system is normal.
The pulse detection function needs the drive board to support the pulse detection function, specifically, the pulse detection function can detect the rising edge and the falling edge of a PWM pulse, and calculate the pulse period and the duration of a high level, so as to calculate the duty ratio; after the drive board calculates the duty ratio, the duty ratio can be fed back to the mainboard through communication, so that the mainboard judges whether the detection pulse conforms to the preset pulse.
The system can be used for pre-judging whether the optical fiber wire is bent or not or whether a problem exists on a PWM transmission signal link or not in advance, so that the overvoltage or overcurrent fault does not need to be reported by a frequency converter after the optical fiber wire is started, the fault can be reported when the optical fiber wire is electrified, and the condition that the optical fiber wire is damaged or bent excessively can be pre-judged in advance. That is, the detection of the fiber fault is supported by the driver with the pulse width detection function, and the fault of the fiber line in the abnormal mode can be determined in advance by the pulse width detection.
Based on the same inventive concept, the embodiment of the present invention further provides an optical fiber fault determination apparatus, as described in the following embodiments. Because the principle of solving the problem of the optical fiber fault determining device is similar to that of the optical fiber fault determining method, the implementation of the optical fiber fault determining device can refer to the implementation of the optical fiber fault determining method, and repeated details are not repeated. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated. Fig. 5 is a block diagram of a fiber fault determining apparatus according to an embodiment of the present invention, and as shown in fig. 5, the fiber fault determining apparatus may include: a receiving module 501, a first determining module 502, and a second determining module 503, the structure of which will be described below.
A receiving module 501, configured to receive a pulse signal with a fixed duty ratio sent by a motherboard through an optical fiber;
a first determining module 502 for determining whether a duty cycle of the received pulse signal is equal to the fixed duty cycle;
a second determining module 503, configured to determine that the optical fiber is faulty if it is determined that the duty cycle of the received pulse signal is not equal to the fixed duty cycle.
In one embodiment, the second determining module 503 may include: an acquisition unit, configured to acquire a rising edge and a falling edge of the received pulse signal; a calculating unit for calculating a pulse period and a duration of a high level according to the rising edge and the falling edge; a first determining unit, configured to determine a duty cycle of the received pulse signal according to the pulse period and a duration of a high level; a second determining unit for determining whether the duty ratio of the received pulse signal is equal to the fixed duty ratio.
In an embodiment, the receiving module 501 may specifically receive, after the unit is powered on, a pulse signal with a fixed duty ratio sent by a main board through an optical fiber through a driving board.
In an embodiment, the optical fiber fault determining apparatus may be further configured to return indication information for characterizing an optical fiber fault to the main board after determining the optical fiber fault; and the main board displays the indication information of the optical fiber fault.
In one embodiment, the fiber fault may include, but is not limited to, at least one of: and the optical fiber is damaged and the bending of the optical fiber exceeds a preset threshold value.
In an embodiment, the optical fiber fault determination apparatus may be further configured to, after determining whether the duty cycle of the received pulse signal is equal to the fixed duty cycle, transmit the pulse signal to the driving board through the optical fiber by the main board in a case where it is determined that the duty cycle of the received pulse signal is equal to the fixed duty cycle.
In one embodiment, the driving board may include, but is not limited to, at least one of: rectifier module IGBT drive plate, contravariant module IGBT drive plate.
In another embodiment, a software is provided, which is used to execute the technical solutions described in the above embodiments and preferred embodiments.
In another embodiment, a storage medium is provided, in which the software is stored, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
From the above description, it can be seen that the embodiments of the present invention achieve the following technical effects: the main board sends a pulse signal with a fixed duty ratio through the optical fiber, then judges whether the duty ratio of the pulse signal received by the receiving end changes, and if the duty ratio of the pulse signal received by the receiving end changes, the optical fiber fault is indicated, so that the line transmission fault can be found in advance. By the aid of the scheme, the problem that the existing optical fiber faults cannot find the faults of the frequency converter in the unit in time is solved, and the technical effect of effectively finding the optical fiber faults in time and protecting unit equipment is achieved.
Although various specific embodiments are mentioned in the disclosure of the present application, the present application is not limited to the cases described in the industry standards or the examples, and the like, and some industry standards or the embodiments slightly modified based on the implementation described in the custom manner or the examples can also achieve the same, equivalent or similar, or the expected implementation effects after the modifications. Embodiments employing such modified or transformed data acquisition, processing, output, determination, etc., may still fall within the scope of alternative embodiments of the present application.
Although the present application provides method steps as described in an embodiment or flowchart, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an apparatus or client product in practice executes, it may execute sequentially or in parallel (e.g., in a parallel processor or multithreaded processing environment, or even in a distributed data processing environment) according to the embodiments or methods shown in the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
The devices or modules and the like explained in the above embodiments may be specifically implemented by a computer chip or an entity, or implemented by a product with certain functions. For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the present application, the functions of each module may be implemented in one or more pieces of software and/or hardware, or a module that implements the same function may be implemented by a combination of a plurality of sub-modules, and the like. The above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and other divisions may be realized in practice, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for enabling a computer device (which may be a personal computer, a mobile terminal, a server, or a network device) to execute the method according to the embodiments or some parts of the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
While the present application has been described by way of examples, those of ordinary skill in the art will appreciate that there are numerous variations and permutations of the present application that do not depart from the spirit of the present application and that the appended embodiments are intended to include such variations and permutations without departing from the present application.
Claims (12)
1. A method of fiber optic fault determination, comprising:
receiving a first pulse signal with a fixed duty ratio sent by a mainboard through an optical fiber;
determining whether a duty cycle of the received first pulse signal is equal to the fixed duty cycle, wherein the duty cycle of the received first pulse signal is a ratio of a duration of a high level to a pulse period;
determining the fiber fault if it is determined that the duty cycle of the received first pulse signal is not equal to the fixed duty cycle.
2. The method of claim 1, wherein determining whether the duty cycle of the received first pulse signal is equal to the fixed duty cycle comprises:
acquiring a rising edge and a falling edge of the received first pulse signal;
calculating a pulse period and duration of a high level according to the rising edge and the falling edge;
determining the duty ratio of the received first pulse signal according to the pulse period and the duration of the high level;
determining whether a duty cycle of the received first pulse signal is equal to the fixed duty cycle.
3. The method of claim 1, wherein receiving the first pulse signal with a fixed duty cycle transmitted by the main board through the optical fiber comprises:
after the unit is powered on, a first pulse signal with a fixed duty ratio sent by the main board through the optical fiber is received through the driving board.
4. The method of claim 1, after determining the fiber fault, further comprising:
returning indication information for representing optical fiber faults to the main board;
and the main board displays the indication information of the optical fiber fault.
5. The method of claim 1, wherein the fiber fault comprises at least one of: and the optical fiber is damaged and the bending of the optical fiber exceeds a preset threshold value.
6. The method of any of claims 1-5, after determining whether the duty cycle of the received first pulse signal is equal to the fixed duty cycle, further comprising:
and under the condition that the duty ratio of the received first pulse signal is determined to be equal to the fixed duty ratio, the main board sends a second pulse signal to the driving board through the optical fiber.
7. The method of claim 6, wherein the drive plate comprises at least one of: rectifier module IGBT drive plate, contravariant module IGBT drive plate.
8. An optical fiber fault determining apparatus, comprising:
the receiving module is used for receiving a first pulse signal with a fixed duty ratio, which is sent by the mainboard through an optical fiber;
a first determining module, configured to determine whether a duty cycle of the received first pulse signal is equal to the fixed duty cycle, where the duty cycle of the received first pulse signal is a ratio of a duration of a high level to a pulse period;
and the second determining module is used for determining the optical fiber fault under the condition that the duty ratio of the received first pulse signal is determined not to be equal to the fixed duty ratio.
9. The apparatus of claim 8, wherein the second determining module comprises:
an acquisition unit, configured to acquire a rising edge and a falling edge of the received first pulse signal;
a calculating unit for calculating a pulse period and a duration of a high level according to the rising edge and the falling edge;
a first determining unit, configured to determine a duty cycle of the received first pulse signal according to the pulse period and a duration of a high level;
a second determining unit for determining whether the duty ratio of the received first pulse signal is equal to the fixed duty ratio.
10. A photovoltaic centrifuge apparatus comprising: the optical fiber fault determination device of any one of claims 8 to 9.
11. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 7 when executing the computer program.
12. A non-transitory computer readable storage medium, having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method of any of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828806.2A CN110611530B (en) | 2019-09-03 | 2019-09-03 | Optical fiber fault determination method and device and photovoltaic centrifuge equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828806.2A CN110611530B (en) | 2019-09-03 | 2019-09-03 | Optical fiber fault determination method and device and photovoltaic centrifuge equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110611530A CN110611530A (en) | 2019-12-24 |
| CN110611530B true CN110611530B (en) | 2020-11-10 |
Family
ID=68891122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910828806.2A Active CN110611530B (en) | 2019-09-03 | 2019-09-03 | Optical fiber fault determination method and device and photovoltaic centrifuge equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110611530B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605046A (en) * | 2013-11-14 | 2014-02-26 | 航天科工深圳（集团）有限公司 | Fault indicator and transmission method thereof |
| CN105490739A (en) * | 2015-11-25 | 2016-04-13 | 国家电网公司 | System and method for monitoring optical cable of backbone network |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6798990B2 (en) * | 2001-02-09 | 2004-09-28 | International Business Machines Corporation | Laser safety method for DC coupled parallel optical link |
| CN101179332A (en) * | 2007-11-24 | 2008-05-14 | 华为技术有限公司 | Method and device for measuring optical power |
| CN102210072B (en) * | 2008-12-26 | 2013-01-16 | 富士通株式会社 | Optical signal generating device and method for adjusting same |
| CN201781417U (en) * | 2010-08-20 | 2011-03-30 | 镇江华东电力设备制造厂 | Cascaded high-voltage frequency converter PWM wave generation control system |
| CN101964647B (en) * | 2010-09-14 | 2012-10-24 | 日银Imp微电子有限公司 | Pulse width signal duty ratio detection circuit |
| CN102088315B (en) * | 2011-03-18 | 2014-07-23 | 北京锐锋钝石科技有限公司 | Optical fiber failure positioning system and method |
| EP2742642B1 (en) * | 2011-08-11 | 2017-04-12 | Balluff GmbH | Measured value transmitting device |
-
2019
- 2019-09-03 CN CN201910828806.2A patent/CN110611530B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605046A (en) * | 2013-11-14 | 2014-02-26 | 航天科工深圳（集团）有限公司 | Fault indicator and transmission method thereof |
| CN105490739A (en) * | 2015-11-25 | 2016-04-13 | 国家电网公司 | System and method for monitoring optical cable of backbone network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110611530A (en) | 2019-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110829576B (en) | Uninterruptible power supply input abnormity detection method and system and terminal equipment | |
| EP2800024B1 (en) | System and methods for identifying applications in mobile networks | |
| CN109905084B (en) | Method and device for judging position of fault point and photovoltaic system | |
| CN108872762B (en) | Electronic equipment leakage detection method and device, electronic equipment and storage medium | |
| CN108762118B (en) | Fault processing method and device between communication devices | |
| CN105281966A (en) | Method and device for identifying abnormal traffic of network equipment | |
| CN113658414A (en) | Mine equipment fault early warning method and device, terminal equipment and storage medium | |
| CN110262362B (en) | AGV working temperature monitoring method, system and device | |
| CN110611530B (en) | Optical fiber fault determination method and device and photovoltaic centrifuge equipment | |
| CN113282160B (en) | UPS service life prediction method, equipment and computer readable storage medium | |
| CN112865094B (en) | Coordination control method and device for restarting low-voltage line of multi-terminal direct-current power transmission system | |
| CN110797968B (en) | Power-off prevention method and system for uninterruptible power supply and terminal equipment | |
| CN104111884A (en) | Method for judging positions of failed servers | |
| CN111062503B (en) | Power grid monitoring alarm processing method, system, terminal and storage medium | |
| CN112583617B (en) | Fault determination method, server, control terminal and storage medium | |
| CN113241741B (en) | DC line protection method, device and equipment for preventing AC fault from being started by mistake | |
| CN112541011A (en) | Power grid terminal fault processing method and device based on RPA and AI | |
| CN102541705B (en) | Testing method for computer and tooling plate | |
| CN111181763A (en) | Network fault reporting method and device | |
| CN105068021A (en) | Switching mode power supply offline fault detection device and system | |
| CN115499239A (en) | Smart city network security processing method and system | |
| CN114116373A (en) | Network request monitoring method and device, electronic equipment and storage medium | |
| CN212991960U (en) | Motor control device with dual over-temperature protection | |
| CN211148837U (en) | Outer quick-witted testing arrangement of air conditioner | |
| CN110649602A (en) | Electric power early warning method and electric power early warning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |