CN112781623A - Optical fiber gyroscope state detection and test system - Google Patents
Optical fiber gyroscope state detection and test system Download PDFInfo
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- CN112781623A CN112781623A CN202110040487.6A CN202110040487A CN112781623A CN 112781623 A CN112781623 A CN 112781623A CN 202110040487 A CN202110040487 A CN 202110040487A CN 112781623 A CN112781623 A CN 112781623A
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- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
Abstract
The invention relates to a state detection and test system of an optical fiber gyroscope, which comprises: the system comprises a state detection system and a test system, wherein when the state quantity detected by the state detection system is normal, the test system starts to work. The invention can rapidly improve the testing and detecting efficiency of the optical fiber gyroscope, so that the testing and detecting process is automatic, efficient, convenient and rapid, and the labor cost and the time cost are greatly saved.
Description
Technical Field
The invention relates to the field of optical fiber gyroscope testing, in particular to an optical fiber gyroscope state detection and testing system.
Background
The Fiber Optic Gyroscope (FOG) is taken as a core component of a new-generation inertial system, has been fully paid attention and recognized in the inertial field by virtue of small volume, light weight, compact structure, high sensitivity and reliability, and rapidly becomes a mainstream gyroscope in the inertial technical research field, is widely applied to severe and severe working environments such as sea, land, air and the like, and is more serious in abrasion and damage caused to the Fiber optic gyroscope due to the special and severe application occasions.
The optical fiber gyroscope is a multi-element technical product integrating light, mechanical and electrical into a whole, causes a plurality of factors of abnormal work, only depends on manpower to investigate the reason of the abnormal work of the gyroscope, and simultaneously, the difficulty of the problem investigation process is increased due to the precision and compact structure of the optical fiber gyroscope and the high sensitivity to various environmental factors, and the irreparable damage and influence on the gyroscope caused by personnel in the investigation process can be improved by a large probability.
The optical fiber gyroscope has the advantages of complex and tedious test process, long test period, multiple test indexes and test links, huge test data and complex algorithm, and particularly in the batch production process, the automatic high-efficiency degree of the test process directly influences the test efficiency.
At the present stage, the optical fiber gyroscope testing system researched for the optical fiber gyroscope testing process only has the testing function, cannot combine the detecting function with the testing function, has relatively less gyroscope detecting state quantity and relatively single function.
Disclosure of Invention
The invention aims to provide a state detection and test system of an optical fiber gyroscope, which can be used for rapidly improving the test and detection efficiency of the optical fiber gyroscope, enabling the test and detection process to be automatic, efficient, convenient and rapid, and greatly saving the labor cost and the time cost.
In order to achieve the purpose, the invention provides the following scheme:
a system for detecting and testing the state of an optical fiber gyroscope, comprising: the system comprises a state detection system and a test system, wherein when the state quantity detected by the state detection system is normal, the test system starts to work.
Optionally, the state detection system includes a state detection subsystem and an alarm subsystem, the state detection subsystem includes an environment detection module, an equipment parameter detection module, a light path parameter detection module, a circuit parameter detection module and a test result detection module, and the alarm subsystem includes an alarm state judgment module, an alarm state display module and an alarm history query module.
Optionally, the test system includes an equipment control subsystem and a test result output module.
Optionally, the environment detection module is configured to detect an environment temperature, an environment magnetic field, and an environment vibration condition, the device parameter detection module is configured to detect a turntable state, a incubator state, and a vibration table state, the light path parameter detection module is configured to detect a light source, a phase modulator, and a detector, the circuit parameter detection module is configured to detect a system current, a voltage, a light source drive, a modulation circuit, and a signal processing circuit, and the test result detection module is configured to output a gyro determination result.
Optionally, the alarm state display module includes a warning light warning unit and a pop-up window warning unit.
Optionally, the equipment control subsystem includes a turntable control module and an incubator control module, the turntable control module includes a rotation speed control unit, a steering control unit, an acceleration control unit and a stage change position control unit, and the incubator control module includes a temperature control unit, a temperature change rate control unit, a heat preservation time control unit and a cycle number control unit.
Optionally, the output signal of the test result output module is in the form of a digital signal, and the indexes output by the test result output module include a scale factor series, a zero offset series, a random walk coefficient, a threshold value, and a resolution.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a state detection and test system of an optical fiber gyroscope, which integrates a gyroscope state quantity detection system, an alarm system, an equipment control system and a gyroscope test system to a high degree to form a high-efficiency, convenient and intelligent integrated test system, overcomes the problems of high problem troubleshooting difficulty, low efficiency and the like of the optical fiber gyroscope in the test process, reduces the irreparable influence of device disassembly on the gyroscope, and quickly improves the test and test efficiency of the optical fiber gyroscope, so that the test and test process is automatic, efficient, convenient and quick.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a structural diagram of a state detection and test system of an optical fiber gyroscope according to the present invention;
FIG. 2 is a block diagram of a system for monitoring the state of an optical fiber gyroscope;
FIG. 3 is a flow chart of an alarm system of the optical fiber gyroscope;
FIG. 4 is a schematic diagram of the control mode of the apparatus;
FIG. 5 is a block diagram of a control system of the optical fiber gyroscope test equipment;
FIG. 6 is a data processing flow chart of the upper computer of the optical fiber gyroscope;
FIG. 7 is a table diagram showing the types of devices constituting the status detecting and testing system of the optical fiber gyroscope according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a state detection and test system of an optical fiber gyroscope, which can be used for rapidly improving the test and detection efficiency of the optical fiber gyroscope, enabling the test and detection process to be automatic, efficient, convenient and rapid, and greatly saving the labor cost and the time cost.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Aiming at the problems of the optical fiber gyroscope in the detection and test process, the structure, the performance and the detection quantity of the existing optical fiber gyroscope are combined, and the optical fiber gyroscope state detection and test system mainly comprises four parts, namely a gyroscope state quantity detection part, an alarm system, a test equipment control system and a gyroscope test system. The system can be applied to the test process of the optical fiber gyroscope, and can also be widely applied to various occasions such as the inspection and performance test of the optical fiber gyroscope, which need to detect the detection quantity of the optical fiber gyroscope, so that the test and detection efficiency of the optical fiber gyroscope are rapidly improved, the test and detection process is automatic and efficient, convenient and fast, and the labor cost and the time cost are greatly saved.
Fig. 1 is a structural diagram of the state detection and test system of the optical fiber gyroscope of the invention. As shown in fig. 1, a system for detecting and testing the state of an optical fiber gyroscope includes: the system comprises a state detection system 1 and a test system 2, wherein when the state quantity detected by the state detection system 1 is normal, the test system 2 starts to work.
The state detection system 1 comprises a state detection subsystem and an alarm subsystem, wherein the state detection subsystem comprises an environment detection module, an equipment parameter detection module, a light path parameter detection module, a circuit parameter detection module and a test result detection module, and the alarm subsystem comprises an alarm state judgment module, an alarm state display module and an alarm history inquiry module. The environment detection module is used for detecting the ambient temperature, the ambient magnetic field and the ambient vibration condition, the equipment parameter detection module is used for detecting the rotary table state, the incubator state and the vibration table state, the light path parameter detection module is used for detecting the light source, the phase modulator and the detector, the circuit parameter detection module is used for detecting the system current, the voltage, the light source drive, the modulation circuit and the signal processing circuit, and the test result detection module is used for outputting the gyro judgment result. The alarm state display module comprises a warning lamp warning unit and a popup window warning unit.
A state detection subsystem:
under the action of physical field, the geometric characteristics, physical characteristics and even chemical characteristics of the material can be changed. For example, the change of the temperature field causes the geometric deformation of the optical fiber material, the geometric deformation of the material causes the stress change of the optical fiber, and the change of the magnetic field causes the change of the optical wave in the optical fiber. The optical fiber coil of the optical fiber gyroscope is formed by winding optical fibers with a certain length, and the refractive index, stress and polarization cross coupling of the optical fibers are changed in the length direction of the optical fibers, so that the optical parameters of the optical fiber coil are distributed. Because the temperature field, the stress action and the like have the distributed characteristics, the influence on the optical fiber gyroscope is also distributed. In addition, the influence of the physical field and the application environment on the optical fiber gyroscope is generally a non-reciprocity factor causing the optical path of the optical fiber gyroscope, and therefore, the detection of the test environment of the optical fiber gyroscope is indispensable.
The detection of the test equipment is mainly used for detecting the working state of the auxiliary test equipment in the process of testing each performance index of the gyroscope, the acquired data of the equipment accords with the parameter setting of the equipment, and whether the test of each index of the gyroscope is correct or not is the basis for the normal operation of the auxiliary equipment.
The detection of the circuit detection module visually displays whether the optical fiber gyroscope is normally started or not, whether the optical fiber gyroscope normally works in a specified system voltage and current mode or not, and influences of external environment changes on system voltage and current; the normal display and output of the circuit detection module are the basis and precondition of the gyro test, and the signal processing unit plays a very important role in the gyro test system and directly determines the working mode and the measurement precision of the optical fiber gyro, so that the detection of the circuit module of the optical fiber gyro is very important.
The optical path part of the interference type optical fiber gyroscope mainly comprises a light source, a coupler, a phase modulator, an optical fiber ring and a photoelectric detector. Therefore, the device parameter detection is carried out on the main core devices (the light source, the phase modulator and the detector) of the light path system, so that all parts of the light path are ensured to be in a normal and stable working environment, and the stability and reliability of the whole test system are ensured. The method comprises the following steps that a light source of the optical fiber gyroscope is a broadband light source, main parameters of the light source, which influence the performance of the optical fiber gyroscope, are output optical power and wavelength, and light source detection mainly carries out real-time detection on parameters of the light source, such as working current, working temperature, light source optical power, TEC voltage and TEC current; the phase modulator is mainly used for detecting half-wave voltage, modulation frequency division, modulation depth, feedback coefficients and the like; the detector mainly detects the optical power of the detector.
The detection of the state quantity is to ensure that the working output of the gyroscope is normal, so that the testing and the detection of the gyroscope indexes are indispensable, and the optical fiber gyroscope is tested by combining a standard testing method of the optical fiber gyroscope, wherein the testing comprises indexes such as scale factor series, zero offset series, random walk and the like, the index result after the testing is judged, and the qualification judgment of the gyroscope product is made in time. Fig. 2 is a block diagram of a system for monitoring the state of the optical fiber gyroscope.
An alarm subsystem:
the alarm subsystem comprises an alarm state judgment module, an alarm state display module and an alarm history query module.
The alarm state judgment module is used for collecting data of each state quantity by the gyroscope in the state detection system and judging a threshold value, triggering alarm when the amplitude of the collected data index exceeds a preset threshold value, and combining threshold value judgment and data ratio judgment to carry out double judgment on the state quantity data in order to reduce the conditions of system false alarm, false alarm and the like caused by the numerical value abnormity of one or more points, so that the alarm state is judged more scientifically and reasonably.
The alarm state display module combines two display modes of warning by a warning lamp and warning by a popup window. The warning lamp uses different color marks to state the state, and the state display screen judges and displays the current gyro parameters and data states according to the corresponding preset colors and states, such as whether all the gyro configuration parameters are set, whether the gyro configuration parameters are set normally, whether the data acquisition is normal, whether the data acquisition is low or high, and the like. The popup warning is mainly applied to the gyro test process, in the test process, when some collected state quantity data or a series of state quantity data are abnormal, a plurality of warnings or a series of related warnings are analyzed and processed, for example, a decisive warning, namely warning information with highest priority or higher priority is extracted in the modes of using frequency warning or derivative warning and the like, and corresponding measures are taken according to the analysis result. Meanwhile, the gyro alarm information is graded, and the most serious and urgent alarm information is sent to a mobile phone of a worker, so that the alarm information of the gyro can be sent to a test engineer to receive the information at the first time, the most serious and urgent alarm is processed in the first place, further deterioration of a test fault is effectively avoided, and serious accidents or economic losses are avoided.
The alarm history inquiry module is used for tracking, counting and summarizing the confirmed and cleared history warning information. And the historical warning statistical module can be combined with the popup warning, after the popup warning gives the warning information with the highest priority or higher, a method and measures for solving the warning once are provided according to key words and information in the warning information, and meanwhile, the warning query module is also designed, so that the historical warning can be queried and counted, and the warning information meeting certain conditions can be queried, so that the warning information is further processed and analyzed, and the overall performance of the gyro product is improved. In the alarm subsystem, the alarm state system combines threshold judgment and abnormal value ratio judgment to perform double judgment, so that false alarm and false alarm conditions are reduced; when the gyro multi-state quantity detection data are abnormal, screening and priority ranking are carried out, alarm information is refined, and alarm reasons are quickly located; and sequencing the emergency degree of the alarm information, and sending the serious and urgent alarm information to the mobile phone of the worker, so that the most serious and urgent alarm is quickly and preferentially processed, further deterioration of the test fault is effectively avoided, and serious accidents or economic losses are avoided.
Fig. 3 is a flow chart of the optical fiber gyroscope alarm system. The alarm state judging and displaying method comprises the following steps:
1. the method comprises the following steps of 1, completing the construction of a gyro product testing system, opening upper computer software, and completing initialization;
2. parameter configuration is carried out on a test gyro product, such as driving current, modulation depth, feedback coefficient and the like, and when all necessary configuration parameters are set and are within a threshold value range, the running state of the alarm lamp is a basic state; when one or more of the necessary configuration parameters are not set, the running state of the alarm lamp is a warning state 1; when all the necessary configuration parameters are set, but one or more set parameters exceed the set threshold range, the operation state of the alarm lamp at the moment of the invention is the alarm state 2. The warning state 1 is required to be set and the set value is within the threshold range, and the warning state 1 is converted into a basic state; warning state 1 sets parameters but the set values are beyond the threshold range, warning state 1 transitions to warning state 2, warning state 2 must modify the set values and within the threshold range, warning state 2 transitions to the base state.
3. And (5) completing parameter configuration, testing the product, and uploading the detected data of each state quantity.
4. And judging the uploaded state quantity data, wherein the detection state quantity comprises a plurality of items in the figure 2, but not limited to the state quantity in the state 2. If the uploaded data of each state quantity does not exceed the set threshold value, the test is normal; if there is a data amount exceeding the threshold among the data uploaded by the respective state amounts, it is determined whether the single state amount or the multiple state amounts exceed the threshold.
5. The single state quantity data exceeds the threshold value, which means that only one state quantity value of the uploaded numerous state quantity data exceeds the threshold value, and the multi-state quantity exceeding the threshold value is more than the single state quantity, namely two or more than two state quantities exceed the threshold value. Judging the abnormal value data ratio of the single state quantity data when the single state quantity data exceeds a threshold value, if the abnormal value ratio is smaller than a set value, testing normally, if the abnormal value ratio is larger than the set value, outputting abnormal state quantity data, and performing popup alarm; when the multi-state quantity data exceeds a set threshold value, a plurality of warnings or a series of warnings are subjected to warning correlation analysis in a mode of frequency warning or derivative warning and the like, so that a decisive warning is extracted, low-priority warnings caused by high-priority warnings or less important warnings are removed, one or more abnormal state quantities with the highest or higher priority are obtained, and pop-up warning is carried out on warning information with the highest or higher priority.
6. After the popup warning gives the warning information with the highest or higher priority, the historical warning statistical module can provide a method and measures for solving the warning once according to key words and information in the warning information, meanwhile, the popup warning and the key information in the solution are graded into warning information, if the popup warning is lower in grade, a tester waits for solving, if the popup warning is higher in grade, the severe and urgent warning information is sent to a mobile phone of a worker, so that the test engineer receives the information at the first time, the most severe and urgent warning information is processed in a priority mode, further deterioration of a test fault is effectively avoided, and severe accidents or economic losses are avoided.
7. The tester solves the alarm according to the solution provided by the popup alarm and history alarm system module, saves the alarm record and finishes the test; if the tester does not solve the alarm according to the solution provided by the popup alarm and historical alarm system module and uses a new solution to solve the alarm, the solution is supplemented to the historical alarm statistical module for later inquiry and statistical analysis.
8. All the collected state quantity data are within a set threshold value, no indicator light or spring window alarms, and the gyro product is normally tested.
The test system 2 comprises an equipment control subsystem and a test result output module. The equipment control subsystem comprises a rotary table control module and an incubator control module, the rotary table control module comprises a rotating speed control unit, a steering control unit, an acceleration control unit and a station changing position control unit, and the incubator control module comprises a temperature control unit, a temperature changing rate control unit, a heat preservation time control unit and a cycle number control unit. The output signal of the test result output module is in a digital signal form, and the indexes output by the test result output module comprise a scale factor series, a zero offset series, a random walk coefficient, a threshold value and a resolution ratio.
An equipment control subsystem:
the gyro testing equipment mainly comprises a tested sample and a testing environment, wherein the testing environment comprises a rotary table environment, an incubator environment, a vibration environment, a magnetic field environment and the like. The upper computer communicates with each device in a serial port mode, the devices which are indispensable for finishing the gyro index test are a rotary table and a temperature box, and the control of the rotary table and the temperature box is not relatively independent, but mutually combined and supplemented. Fig. 4 is a schematic diagram of the control mode of the device.
The indispensable parameters of the rotary table are rotating speed, acceleration, steering and rotary table position;
the indispensable parameters of the incubator are temperature, temperature change rate, heat preservation time and cycle number.
The vibration environment, the magnetic field environment or other test environments can connect the serial port of the device with the test system, and the setting and detection are not repeated herein. Fig. 5 is a block diagram of a control system of the optical fiber gyroscope test equipment.
A test result output module:
the output signal of the gyroscope is in a digital signal form, the communication with an upper computer is realized through a serial port interface after passing through a data acquisition module, the automatic acquisition of the test data of the tested gyroscope sample is completed, the gyroscope test items mainly comprise a static performance test, a rate test, a high-low temperature performance test and a dynamic performance test, according to military standard GJB2426A-2004, a calculation method of gyro test indexes in the optical fiber gyro test method, and automatically processing and calculating the acquired data to obtain a test index result of the optical fiber gyroscope, wherein the test index result comprises a scale factor series (scale factor, zero position, scale factor nonlinearity, scale factor asymmetry, scale factor repeatability and scale factor temperature sensitivity), a zero offset series (zero offset, zero offset stability, zero offset repeatability and zero offset temperature sensitivity), a random walk coefficient, a threshold value, a resolution ratio and other test indexes. The data processing flow chart of the upper computer is shown in FIG. 6.
The invention is different from a gyro test system with a single function, and highly integrates a gyro state quantity detection system, an alarm system, an equipment control system and the gyro test system, thereby realizing the high-efficiency, convenient and intelligent integrated test system. The optical fiber gyroscope state detection and test system can be applied to the optical fiber gyroscope test process, can also be widely applied to various occasions where the optical fiber gyroscope detection amount is required to be detected, such as optical fiber gyroscope detection, performance detection and the like, can accurately and visually display the whole running state of the gyroscope in real time, enables the test process to be efficient and convenient, greatly reduces the labor cost and the time cost, and greatly improves the reliability and the accuracy of the optical fiber gyroscope system.
FIG. 7 is a table diagram showing the types of devices constituting the status detecting and testing system of the optical fiber gyroscope according to the present invention. As can be seen from FIG. 7, the types of the sample to be tested, the incubator, the rotary table, the vibration table, the test software and the power supply.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to assist understanding of the system and its core concepts; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. A state detection and test system of an optical fiber gyroscope is characterized by comprising: the system comprises a state detection system and a test system, wherein when the state quantity detected by the state detection system is normal, the test system starts to work.
2. The system for detecting and testing the state of the optical fiber gyroscope according to claim 1, wherein the state detecting system comprises a state detecting subsystem and an alarm subsystem, the state detecting subsystem comprises an environment detecting module, an equipment parameter detecting module, a light path parameter detecting module, a circuit parameter detecting module and a test result detecting module, and the alarm subsystem comprises an alarm state judging module, an alarm state displaying module and an alarm history inquiring module.
3. The system for detecting and testing the state of the optical fiber gyroscope of claim 1, wherein the testing system comprises an equipment control subsystem and a test result output module.
4. The system for detecting and testing the state of the optical fiber gyroscope according to claim 2, wherein the environment detection module is used for detecting the environment temperature, the environment magnetic field and the environment vibration condition, the device parameter detection module is used for detecting the turntable state, the incubator state and the vibrating table state, the optical path parameter detection module is used for detecting the light source, the phase modulator and the detector, the circuit parameter detection module is used for detecting the system current, the voltage, the light source drive, the modulation circuit and the signal processing circuit, and the test result detection module is used for outputting the gyroscope judgment result.
5. The system for detecting and testing the state of the optical fiber gyroscope of claim 2, wherein the alarm state display module comprises a warning light warning unit and a pop-up window warning unit.
6. The optical fiber gyroscope state detection and test system according to claim 3, wherein the device control subsystem comprises a turntable control module and an incubator control module, the turntable control module comprises a rotation speed control unit, a steering control unit, an acceleration control unit and a stage change position control unit, and the incubator control module comprises a temperature control unit, a temperature change rate control unit, a holding time control unit and a cycle number control unit.
7. The system for detecting and testing the state of the optical fiber gyroscope of claim 3, wherein the output signal of the test result output module is in the form of a digital signal, and the output indexes of the test result output module include a scale factor series, a zero offset series, a random walk coefficient, a threshold value and a resolution.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116067400A (en) * | 2023-03-07 | 2023-05-05 | 中国船舶集团有限公司第七〇七研究所 | Fiber-optic gyroscope performance analysis method and system based on rotation modulation test |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116067400A (en) * | 2023-03-07 | 2023-05-05 | 中国船舶集团有限公司第七〇七研究所 | Fiber-optic gyroscope performance analysis method and system based on rotation modulation test |
| CN116067400B (en) * | 2023-03-07 | 2023-06-16 | 中国船舶集团有限公司第七〇七研究所 | Fiber-optic gyroscope performance analysis method and system based on rotation modulation test |
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