A temperature fitting selection method for laser gyro frequency stabilization working mode and related equipment

Abstract

The present application relates to the field of laser gyro technology, and provides a method for temperature fitting selection of a laser gyro stable frequency working mode and related equipment. The method includes: adjusting the temperature in the heat preservation device where the target laser gyro is located, when the temperature is one of multiple target temperatures, collecting the first internal temperature and the first working voltage of the target laser gyro in the stable frequency working mode, and fitting all the first internal temperatures and all the first working voltages to obtain the cold start curve in the stable frequency working mode; obtaining the hot start curve of the target laser gyro in the stable frequency working mode; obtaining the internal temperature and the shell temperature of the target laser gyro in the working environment, and calculating the final working voltage based on the internal temperature, the shell temperature, the cold start curve and the hot start curve; adjusting the target laser gyro to the final working voltage so that the target laser gyro works in the current stable frequency working mode. The method of the present application can improve the accuracy of the selection of the stable frequency working mode.

Description

Technical Field

[0001] The present application relates to the technical field of laser gyroscopes, and in particular to a temperature fitting selection method for a laser gyroscope frequency stabilization working mode and related equipment. Background Art

[0002] For the frequency stabilization of the dual-frequency machine-dithered laser gyroscope, the existing technical solution is to start the dual-frequency machine-dithered laser gyroscope at room temperature to work normally, change the temperature of the temperature test box, and use a certain temperature change rate, such as 5℃ / minute, to rise to +60℃, and then use a certain temperature change rate, such as 5℃ / minute to drop to -40℃. During this process, the change of the frequency-stabilized working voltage with the temperature transmitted by the internal temperature sensor of the dual-frequency machine-dithered laser gyroscope is collected, so as to obtain the fitting relationship between the two and determine which frequency-stabilized working voltage to use in different temperature ranges.

[0003] Since the collected stable frequency working voltage and the internal temperature of the dual-frequency machine-shaking laser gyroscope are continuous values ​​when working in hot state, there will be large differences in the stable frequency working points for the dual-frequency machine-shaking laser gyroscope that is cold-started at different temperature points. If this method is used to determine the stable frequency working point, there is a high probability of deviation, resulting in failure of the stable frequency. Since the change in temperature will greatly change the performance of piezoelectric ceramics, especially when starting at high and low temperatures, if the stable frequency working voltage is calculated according to the existing technical solution, a large error will occur, resulting in a fault. It can be seen that the existing frequency stabilization method has the problem of low accuracy in selecting the stable frequency working mode of the laser gyroscope. Summary of the invention

[0004] The present application provides a method for temperature fitting selection of a laser gyroscope's stable frequency working mode and related equipment, which can solve the problem of low accuracy in selecting a laser gyroscope's stable frequency working mode.

[0005] In a first aspect, an embodiment of the present application provides a method for selecting a temperature fitting of a laser gyro frequency stabilization working mode. The method for selecting a temperature fitting of a laser gyro frequency stabilization working mode comprises:

[0006] For each of the multiple frequency stabilization working modes of the target laser gyroscope, the temperature in the heat preservation device where the target laser gyroscope is located is adjusted so that the temperature in the heat preservation device is one of the multiple target temperatures in sequence. When the temperature in the heat preservation device is one of the multiple target temperatures, the first internal temperature and the first working voltage of the target laser gyroscope in the frequency stabilization working mode are collected, and all the first internal temperatures and all the first working voltages are fitted to obtain a cold start curve in the frequency stabilization working mode. Before each collection starts, the target laser gyroscope is turned on, and after each collection is completed, the target laser gyroscope is turned off.

[0007] Obtain the hot start curve of the target laser gyro in each frequency stabilization working mode;

[0008] Obtaining the internal temperature, the shell temperature, and the current stable frequency working mode of the target laser gyro in the actual working environment, and calculating the final working voltage of the target laser gyro in the current stable frequency working mode based on the internal temperature, the shell temperature, all cold start curves, and all hot start curves;

[0009] The operating voltage of the target laser gyro is adjusted to the final operating voltage, so that the target laser gyro operates in the current frequency stabilization operating mode.

[0010] Optionally, a hot start curve of the target laser gyro in each frequency stabilization working mode is obtained, including:

[0011] For each of the multiple frequency stabilization working modes of the target laser gyroscope, the following steps are performed:

[0012] Control the target laser gyro in the heat preservation device to be in the on state;

[0013] The temperature in the heat preservation device is continuously changed at a preset temperature change rate until the temperature in the heat preservation device reaches a preset temperature upper limit value or a preset temperature lower limit value;

[0014] When the temperature in the heat preservation device is one of a plurality of target temperatures during the temperature change process, obtaining a second internal temperature and a second operating voltage of the target laser gyro in a frequency stabilization operating mode;

[0015] All second internal temperatures and all second operating voltages are fitted to obtain a hot start curve in a stable frequency operating mode.

[0016] Optionally, based on the internal temperature, the housing temperature, all cold start curves, and all hot start curves, the final operating voltage of the target laser gyro in the current frequency stabilization operating mode is calculated, including:

[0017] Determine whether the target laser gyro is hot started or cold started according to the internal temperature and the shell temperature;

[0018] If the target laser gyro is cold started, the cold start curve corresponding to the current stable frequency working mode is determined from all cold start curves, and the final working voltage corresponding to the internal temperature is calculated using the cold start curve;

[0019] If the target laser gyro is hot-started, the hot-start curve corresponding to the current stable frequency operation mode is determined from all hot-start curves, and the final operating voltage corresponding to the internal temperature is calculated using the hot-start curve.

[0020] Optionally, determining whether the target laser gyro is hot started or cold started based on the internal temperature and the housing temperature includes:

[0021] Calculate the difference between the internal temperature and the shell temperature;

[0022] Determine whether the difference is less than a preset difference;

[0023] If yes, the target laser gyro is cold started;

[0024] Otherwise, the target laser gyro is hot started.

[0025] Optionally, before the step of collecting the first internal temperature and the first working voltage of the target laser gyro in the stable frequency working mode, the laser gyro stable frequency working mode temperature fitting selection method further includes:

[0026] The temperature in the insulation device is maintained at the corresponding target temperature within the preset insulation time.

[0027] In a second aspect, an embodiment of the present application provides a temperature fitting selection device for a laser gyro frequency stabilization working mode, comprising:

[0028] The acquisition module adjusts the temperature in the heat preservation device where the target laser gyro is located for each of the multiple frequency stabilization working modes of the target laser gyro, so that the temperature in the heat preservation device is one of the multiple target temperatures in sequence, and when the temperature in the heat preservation device is one of the multiple target temperatures, acquires the first internal temperature and the first working voltage of the target laser gyro in the frequency stabilization working mode, and fits all the first internal temperatures and all the first working voltages to obtain a cold start curve in the frequency stabilization working mode; the target laser gyro is turned on before each acquisition starts, and the target laser gyro is turned off after each acquisition is completed;

[0029] An acquisition module is used to acquire a hot start curve of the target laser gyro in each frequency stabilization working mode;

[0030] A calculation module obtains the internal temperature, the shell temperature, and the current stable frequency working mode of the target laser gyro in the actual working environment, and calculates the final working voltage of the target laser gyro in the current stable frequency working mode based on the internal temperature, the shell temperature, all cold start curves, and all hot start curves;

[0031] The adjustment module adjusts the working voltage of the target laser gyro to the final working voltage, so that the target laser gyro works in the current frequency stabilization working mode.

[0032] In a third aspect, an embodiment of the present application provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the temperature fitting selection method for the laser gyroscope frequency stabilization working mode when executing the computer program.

[0033] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the temperature fitting selection method for the laser gyro frequency stabilization working mode is implemented.

[0034] The above solution of the present application has the following beneficial effects:

[0035] In an embodiment of the present application, the temperature in the heat preservation device where the target laser gyro is located is adjusted for each of the multiple frequency stabilization working modes of the target laser gyro, so that the temperature in the heat preservation device is one of the multiple target temperatures in turn. When the temperature in the heat preservation device is one of the multiple target temperatures, the first internal temperature and the first working voltage of the target laser gyro in the frequency stabilization working mode are collected, the target laser gyro is turned on before each collection starts, and the target laser gyro is turned off after each collection is completed, and then all the first internal temperatures and all the first working voltages are fitted to obtain a cold start curve of the target frequency stabilization working mode, so that the cold start of the target laser gyro at different temperatures is achieved, so that the collected data is for a single cold start, and the accuracy of the cold start curve is improved; based on the internal temperature, the shell temperature, the high-precision cold start curve and the hot start curve, the final working voltage of the target laser gyro in the current frequency stabilization working mode is calculated, and the actual temperature condition of the target laser gyro when working is taken into account, so that the actuality and accuracy of the final working voltage are improved, thereby improving the accuracy of the selection of the frequency stabilization working mode of the target laser gyro.

[0036] Other beneficial effects of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 A flow chart of a method for selecting temperature fitting of a laser gyro frequency stabilization working mode provided in an embodiment of the present application;

[0039] Figure 2 A schematic diagram of the structure of a dual-frequency machine-shaking laser gyroscope provided in an embodiment of the present application;

[0040] Figure 3 A schematic diagram comparing the trend lines of data fitting selected for cold start and hot start frequency stabilization working modes of a laser gyroscope provided in an embodiment of the present application;

[0041] Figure 4 A schematic diagram of the structure of a temperature fitting selection device for a laser gyro frequency stabilization working mode provided in an embodiment of the present application;

[0042] Figure 5 A schematic diagram of the structure of a terminal device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0043] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0044] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0045] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0046] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0047] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0048] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0049] In view of the problem of low accuracy in selecting the stable frequency working mode of the laser gyroscope in the existing frequency stabilization method, an embodiment of the present application provides a temperature fitting selection method for the stable frequency working mode of the laser gyroscope. The temperature fitting selection method for the stable frequency working mode of the laser gyroscope adjusts the temperature in the heat preservation device where the target laser gyroscope is located for each of the multiple stable frequency working modes of the target laser gyroscope, so that the temperature in the heat preservation device is one of the multiple target temperatures in sequence. When the temperature in the heat preservation device is one of the multiple target temperatures, the first internal temperature and the first working voltage of the target laser gyroscope in the stable frequency working mode are collected. Before each collection starts, the target laser gyroscope is set to the temperature of ... Turn on the power, shut down the target laser gyro after each acquisition, and then fit all the first internal temperatures and all the first working voltages to obtain the cold start curve of the target stable frequency working mode, so as to realize the cold start of the target laser gyro at different temperatures, so that the collected data is targeted at a single cold start, and the accuracy of the cold start curve is improved; based on the internal temperature, the shell temperature, the high-precision cold start curve and the hot start curve, the final working voltage of the target laser gyro in the current stable frequency working mode is calculated, and the actual temperature condition of the target laser gyro when working is taken into account, so that the actuality and accuracy of the final working voltage are improved, thereby improving the accuracy of the selection of the stable frequency working mode of the target laser gyro.

[0050] Next, the temperature fitting selection method for the laser gyro frequency stabilization working mode provided in this application is exemplified.

[0051] like Figure 1 As shown, the temperature fitting selection method for the laser gyro frequency stabilization working mode provided in the present application includes the following steps:

[0052] Step 11, for each of the multiple frequency stabilization working modes of the target laser gyroscope, adjust the temperature in the heat preservation device where the target laser gyroscope is located, so that the temperature in the heat preservation device is one of the multiple target temperatures in turn, and when the temperature in the heat preservation device is one of the multiple target temperatures, collect the first internal temperature and the first working voltage of the target laser gyroscope in the frequency stabilization working mode, and fit all the first internal temperatures and all the first working voltages to obtain the cold start curve in the frequency stabilization working mode.

[0053] The target laser gyro was turned on before each acquisition and turned off after each acquisition.

[0054] In some embodiments of the present application, the target laser gyroscope may be a dual-frequency machine-shake laser gyroscope or the like, the heat preservation device may be a temperature test chamber or the like, and the stable frequency working mode is obtained by analyzing the relationship between the working voltage and the actual working state of the target laser gyroscope when the internal temperature is normal temperature, such as a stable frequency working mode corresponding to a voltage of 1.2 volts when the internal temperature is normal temperature, a stable frequency working mode corresponding to a voltage of 0.4 volts, a stable frequency working mode corresponding to a voltage of 2.5 volts, and the like.

[0055] It should be noted that before collecting the first internal temperature and the first operating voltage of the target laser gyro in the frequency stabilization operating mode, it is necessary to maintain the temperature in the heat preservation device at the corresponding target temperature within the preset heat preservation time.

[0056] Exemplarily, the first internal temperature can be obtained by setting a temperature sensor inside the target laser gyro, and the first operating voltage of the target laser gyro can be obtained by using a voltage sensor or other equipment. Multiple target temperatures can be set according to a fixed temperature gradient, such as -40°C, -35°C, -30°C, etc. When adjusting the temperature, the temperature can be adjusted according to a preset temperature change rate, such as 2°C per minute. During the adjustment process, if the temperature reaches -40°C, the heat preservation device is kept at this temperature for a preset heat preservation time (such as two hours). After two hours, the target laser gyro is turned on, and the first internal temperature and the first operating voltage are collected. After the collection is completed, the device is turned off and the temperature in the heat preservation device is continued to be adjusted. Then, all first internal temperatures and all first operating voltages can be fitted using a fitting method such as polynomial fitting to obtain a cold start curve describing the relationship between the first internal temperature and the first operating voltage.

[0057] It is worth mentioning that under high and low temperature environments, the lattice constant and dielectric constant of the piezoelectric ceramics of the laser gyroscope will change, which may lead to changes in the crystal structure and thus affect its performance; at the same time, when there are defects such as pores and cracks inside the piezoelectric ceramics, high and low temperatures will accelerate the expansion of defects and cracks, and will also lead to performance degradation. By turning on the target laser gyroscope under insulation equipment, a cold start of the target laser gyroscope is achieved, fully simulating the impact of the external environment on the internal temperature and operating voltage of the target laser gyroscope.

[0058] Step 12, obtaining a hot start curve of the target laser gyro in each frequency stabilization working mode.

[0059] Specifically, for each of the multiple frequency stabilization working modes of the target laser gyroscope, the following steps are performed:

[0060] The first step is to control the target laser gyroscope in the thermal insulation device to be in the on state.

[0061] The second step is to continuously change the temperature in the heat preservation device at a preset temperature change rate until the temperature in the heat preservation device reaches a preset temperature upper limit value or a preset temperature lower limit value.

[0062] The third step is to obtain a second internal temperature and a second operating voltage of the target laser gyro in a frequency stabilization operating mode when the temperature in the heat preservation device is one of a plurality of target temperatures during the temperature change process.

[0063] It should be noted that, in the process of collecting multiple second internal temperatures, the target laser gyroscope is always kept working in the stable frequency working mode by adjusting the working voltage, and the power is not turned on or off, so that the target laser gyroscope remains turned on during the temperature change process.

[0064] In the fourth step, all the second internal temperatures and all the second operating voltages are fitted to obtain a hot start curve in the stable frequency operating mode.

[0065] Exemplarily, the preset temperature change rate is 2°C per minute, the temperature in the heat preservation device is 60°C, the preset temperature lower limit is -40°C, and the temperature change rate of 60°C is reduced to -40°C at a temperature change rate of -2°C per minute for 50 minutes. Within 50 minutes of cooling, the internal temperature sensor of the target laser gyro can be used to obtain the second internal temperature corresponding to multiple target temperatures, and the voltage sensor can be used to obtain the second working voltage corresponding to each second internal temperature. The temperature gradient between the multiple target temperatures can be the same temperature gradient to ensure the balance of data acquisition. Then, the second internal temperature and the second working voltage can be fitted using a fitting method such as polynomial fitting to obtain a hot start curve describing the relationship between the second internal temperature and the second working voltage.

[0066] It is worth mentioning that by maintaining the working state of the target laser gyro and acquiring temperature data and voltage data, the hot start state of the target laser gyro can be analyzed and recorded.

[0067] Step 13, obtaining the internal temperature, shell temperature, and current stable frequency working mode of the target laser gyro in the actual working environment, and calculating the final working voltage of the target laser gyro in the current stable frequency working mode based on the internal temperature, shell temperature, all cold start curves, and all hot start curves.

[0068] It should be noted that the actual working environment is the environment in which the target laser gyroscope actually works, such as a laboratory, an industrial factory, etc. The ambient temperature of the actual working environment usually affects the shell temperature of the target laser gyroscope, and the current frequency stabilization working mode is one of multiple frequency stabilization working modes.

[0069] In some embodiments of the present application, a temperature sensor may be used to obtain the internal temperature and the shell temperature of the target laser gyro. The above steps of calculating the final operating voltage of the target laser gyro in the current frequency stabilization operating mode based on the internal temperature, the shell temperature, all cold start curves and all hot start curves are specifically as follows:

[0070] In the first step, it is determined whether the target laser gyro is hot started or cold started according to the internal temperature and the shell temperature.

[0071] First, calculate the difference between the internal temperature and the case temperature.

[0072] Then determine whether the difference is less than a preset difference.

[0073] If yes, the target laser gyro is cold started.

[0074] Otherwise, the target laser gyro is hot started.

[0075] It should be noted that when comparing the difference value with the preset difference value, the absolute values ​​of the difference value and the preset difference value need to be taken.

[0076] For example, if the internal temperature is 25°C and the outer shell temperature is -10°C, the difference between them is 35°C, which is greater than the preset difference of 5°C, indicating that the temperature inside the target laser gyroscope is relatively high at this time, and it is a hot start. If the internal temperature is 26°C and the outer shell temperature is 24°C, the difference is 2, which is less than the preset difference of 5°C, indicating that the temperature inside the target laser gyroscope is close to the ambient temperature at this time, and it is a cold start.

[0077] In the second step, if the target laser gyro is cold started, the cold start curve corresponding to the current stable frequency working mode is determined from all cold start curves, and the final working voltage corresponding to the internal temperature is calculated using the cold start curve.

[0078] In the third step, if the target laser gyro is hot-started, the hot-start curve corresponding to the current stable frequency working mode is determined from all hot-start curves, and the final working voltage corresponding to the internal temperature is calculated using the hot-start curve.

[0079] Exemplarily, if the internal temperature is 26° C. and the target laser gyro is cold started, 26° C. is substituted into the cold start curve corresponding to the current frequency stabilization working mode to obtain the final working voltage.

[0080] It is worth mentioning that the final operating voltage is calculated based on the internal temperature and the shell temperature, and the actual temperature condition of the target laser gyroscope when it is working is taken into account. The state of the target laser gyroscope can be analyzed, so that the actuality and accuracy of the final operating voltage are improved.

[0081] Step 17, adjusting the operating voltage of the target laser gyro to the final operating voltage, so that the target laser gyro operates in the current frequency stabilization operating mode.

[0082] The cavity of the laser gyroscope is easily affected by other factors such as temperature, which may cause changes in the frequency stabilization working mode or measurement errors. Therefore, it is necessary to adjust the working voltage to stabilize the frequency of the laser gyroscope. That is, by adjusting the working voltage, the piezoelectric ceramics and other frequency stabilization devices inside the laser gyroscope are controlled to adjust the reflector so that the laser gyroscope can work stably in the same frequency stabilization working mode.

[0083] It should be noted that during the startup and operation of the target laser gyroscope, the operating voltage can be adjusted in real time through the above steps of obtaining the final operating voltage to ensure that the target laser gyroscope always operates in the current stable frequency operating mode.

[0084] Based on the above description, the advantages of the temperature fitting selection method for the frequency stabilization working mode of the laser gyro of the present application are: it can effectively avoid the problem of abnormal operation of the laser gyro frequency stabilization working point (i.e., the working voltage in the above text) at low temperatures, especially for applications where the starting temperature changes greatly, it can ensure that the frequency stabilization working point of the laser gyro remains consistent, that is, whether it is low-temperature start or high-temperature start, the frequency stabilization working point of the laser gyro is in the same mode, thereby ensuring the stability and reliability of the laser gyro performance. Moreover, high-order fitting parameters can be used when fitting, and the selection of the frequency stabilization working point is more accurate, especially for high and low temperature regions, the nonlinear error of the piezoelectric ceramic performance is well eliminated. At the same time, regardless of whether the starting state of the laser gyro is cold start or hot start, the corresponding fitting parameters can be used to give the most accurate working voltage.

[0085] The temperature fitting selection method of the laser gyro frequency stabilization working mode of the present application is exemplified below with reference to a specific example.

[0086] The structure of the dual-frequency machine-shaking laser gyro is as follows: Figure 2As shown in the figure, the shaded area represents the optical resonant cavity of the dual-frequency machine-shaked laser gyroscope, the blank area is the shell of the dual-frequency machine-shaked laser gyroscope, and the dots represent temperature sensors. The temperature sensor T is placed in the optical resonant cavity of the dual-frequency machine-shaked laser gyroscope to detect the internal temperature, and the temperature sensor t is placed on the shell of the dual-frequency machine-shaked laser gyroscope to detect the outer shell temperature.

[0087] Will Figure 2 The dual-frequency machine-shaking laser gyro shown in the figure is used as the target laser gyro. The temperature fitting data trend line of the cold-start stable frequency working mode of the laser gyro (i.e., the cold start curve mentioned above) and the temperature fitting data trend line of the hot-start stable frequency working mode of the laser gyro (i.e., the hot start curve mentioned above) obtained by two fitting methods are shown in Figure 2. Figure 3 As shown, Figure 3 Middle horizontal axis is the temperature in degrees Celsius (℃), the vertical axis is the voltage in volts (V), and the curve with a square symbol (a) is the temperature fitting data trend line of the laser gyro cold start stable frequency working mode obtained by polynomial fitting. The expression is: , coefficient of determination The curve with triangle symbol (b) is the temperature fitting data trend line of the laser gyro hot start stable frequency working mode obtained by polynomial fitting, and the expression is , coefficient of determination ,in Indicates temperature, Indicates voltage.

[0088] Therefore, it can be seen that there is a large difference between the temperature fitting selected data trend line of the laser gyroscope cold start and stable frequency working mode obtained in the present application and the temperature fitting selected data trend line of the laser gyroscope hot start and stable frequency working mode. In particular, at the same temperature point, the maximum difference between the laser gyroscope cold start and stable frequency working mode and the laser gyroscope hot start and stable frequency working mode is 0.097V, which is close to 1 / 4 of the mode width. This voltage error will cause abnormal temperature fitting selection of the laser gyroscope stable frequency working mode, thereby affecting the working accuracy of the laser gyroscope.

[0089] The following is an exemplary description of the temperature fitting selection device for the laser gyro frequency stabilization working mode provided in the present application.

[0090] like Figure 4 As shown, the embodiment of the present application provides a temperature fitting selection device for a laser gyro frequency stabilization working mode, and the temperature fitting selection device 400 for a laser gyro frequency stabilization working mode includes:

[0091] The acquisition module 401 adjusts the temperature in the heat preservation device where the target laser gyro is located for each of the multiple frequency stabilization working modes of the target laser gyro, so that the temperature in the heat preservation device is one of the multiple target temperatures in sequence, and when the temperature in the heat preservation device is one of the multiple target temperatures, acquires the first internal temperature and the first working voltage of the target laser gyro in the frequency stabilization working mode, and fits all the first internal temperatures and all the first working voltages to obtain a cold start curve in the frequency stabilization working mode; the target laser gyro is turned on before each acquisition starts, and the target laser gyro is turned off after each acquisition is completed;

[0092] An acquisition module 402 is used to acquire a hot start curve of the target laser gyro in each frequency stabilization operation mode;

[0093] The calculation module 403 obtains the internal temperature, the shell temperature, and the current stable frequency working mode of the target laser gyro in the actual working environment, and calculates the final working voltage of the target laser gyro in the current stable frequency working mode based on the internal temperature, the shell temperature, the cold start curve, and the hot start curve;

[0094] The adjustment module 404 adjusts the operating voltage of the target laser gyro to the final operating voltage, so that the target laser gyro operates in the current frequency stabilization operating mode.

[0095] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0096] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0097] like Figure 5 As shown, an embodiment of the present application provides a terminal device. The terminal device D10 of this embodiment includes: at least one processor D100 ( Figure 5 Only one processor is shown in the figure), a memory D101, and a computer program D102 stored in the memory D101 and executable on at least one processor D100, wherein the processor D100 implements the steps of any of the above method embodiments when executing the computer program D102.

[0098] Specifically, when the processor D100 executes the computer program D102, the temperature in the heat preservation device where the target laser gyro is located is adjusted for each of the multiple frequency stabilization working modes of the target laser gyro, so that the temperature in the heat preservation device is one of the multiple target temperatures in turn. When the temperature in the heat preservation device is one of the multiple target temperatures, the first internal temperature and the first working voltage of the target laser gyro in the frequency stabilization working mode are collected, the target laser gyro is turned on before each collection starts, and the target laser gyro is turned off after each collection is completed, and then all the first internal temperatures and all the first working voltages are fitted to obtain the cold start curve of the target mode, so that the cold start of the target laser gyro at different temperatures is realized, so that the collected data is for a single cold start, and the accuracy of the cold start curve is improved; based on the internal temperature, the shell temperature, the high-precision cold start curve and the hot start curve, the final working voltage of the target laser gyro in the current frequency stabilization working mode is calculated, and the actual temperature condition of the target laser gyro when working is considered, so that the actuality and accuracy of the final working voltage are improved, thereby improving the accuracy of the selection of the frequency stabilization working mode of the target laser gyro.

[0099] The processor D100 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0100] In some embodiments, the memory D101 may be an internal storage unit of the terminal device D10, such as a hard disk or memory of the terminal device D10. In other embodiments, the memory D101 may also be an external storage device of the terminal device D10, such as a plug-in hard disk, a smart memory card (SMC, SmartMedia Card), a secure digital (SD, Secure Digital) card, a flash card (Flash Card), etc. equipped on the terminal device D10. Further, the memory D101 may also include both an internal storage unit of the terminal device D10 and an external storage device. The memory D101 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program, etc. The memory D101 may also be used to temporarily store data that has been output or is to be output.

[0101] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0102] An embodiment of the present application provides a computer program product. When the computer program product runs on a terminal device, the terminal device can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0103] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device, recording medium, computer memory, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium that can carry the computer program code to the laser gyro stable working mode temperature fitting selection method device / terminal device. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0104] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0105] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0106] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A temperature fitting selection method for a laser gyro frequency stabilization working mode, characterized in that: include: For each of the multiple frequency stabilization working modes of the target laser gyroscope, the temperature in the heat preservation device where the target laser gyroscope is located is adjusted so that the temperature in the heat preservation device is one of the multiple target temperatures in sequence, and when the temperature in the heat preservation device is one of the multiple target temperatures, the first internal temperature and the first working voltage of the target laser gyroscope in the frequency stabilization working mode are collected, and all the first internal temperatures and all the first working voltages are fitted to obtain a cold start curve in the frequency stabilization working mode; before each collection starts, the target laser gyroscope is turned on, and after each collection is completed, the target laser gyroscope is turned off; Acquire a hot start curve of the target laser gyro in each frequency stabilization working mode; Acquire the internal temperature, the shell temperature, and the current stable frequency working mode of the target laser gyro in the actual working environment, and calculate the final working voltage of the target laser gyro in the current stable frequency working mode based on the internal temperature, the shell temperature, all cold start curves, and all hot start curves; Adjusting the operating voltage of the target laser gyro to the final operating voltage so that the target laser gyro operates in the current frequency stabilization operating mode; The step of calculating the final operating voltage of the target laser gyro in the current frequency stabilization operating mode based on the internal temperature, the housing temperature, all cold start curves, and all hot start curves includes: Determining whether the target laser gyro is hot started or cold started according to the internal temperature and the housing temperature; If the target laser gyro is cold started, a cold start curve corresponding to the current stable frequency working mode is determined from all cold start curves, and a final working voltage corresponding to the internal temperature is calculated using the cold start curve; If the target laser gyro is hot-started, a hot-start curve corresponding to the current stable frequency operation mode is determined from all hot-start curves, and a final operation voltage corresponding to the internal temperature is calculated using the hot-start curve.

2. The temperature fitting selection method for the laser gyro frequency stabilization working mode according to claim 1 is characterized in that: The step of obtaining a hot start curve of the target laser gyro in each frequency stabilization working mode comprises: For each of the multiple frequency stabilization working modes of the target laser gyroscope, the following steps are performed: Controlling the target laser gyro in the heat preservation device to be in a power-on state; Continuously changing the temperature in the heat preservation device at a preset temperature change rate until the temperature in the heat preservation device reaches a preset temperature upper limit value or a preset temperature lower limit value; When the temperature in the heat preservation device is one of a plurality of target temperatures during the temperature change process, obtaining a second internal temperature and a second operating voltage of the target laser gyro in the frequency stabilization operating mode; All the second internal temperatures and all the second operating voltages are fitted to obtain a hot start curve in the stable frequency operating mode.

3. The temperature fitting selection method for the laser gyro frequency stabilization working mode according to claim 1 is characterized in that: The step of determining whether the target laser gyro is hot started or cold started according to the internal temperature and the housing temperature includes: calculating a difference between the internal temperature and the housing temperature; Determining whether the difference is less than a preset difference; If yes, the target laser gyro is cold started; Otherwise, the target laser gyro is hot started.

4. The temperature fitting selection method for the laser gyro frequency stabilization working mode according to claim 1 is characterized in that: Before the step of collecting the first internal temperature and the first working voltage of the target laser gyro in the stable frequency working mode, the laser gyro stable frequency working mode temperature fitting selection method further includes: The temperature in the heat preservation device is maintained at the corresponding target temperature within the preset heat preservation time.

5. A temperature fitting selection device for a laser gyro frequency stabilization working mode, characterized in that: include: The acquisition module adjusts the temperature in the heat preservation device where the target laser gyro is located for each of the multiple frequency stabilization working modes of the target laser gyro, so that the temperature in the heat preservation device is one of the multiple target temperatures in sequence, and when the temperature in the heat preservation device is one of the multiple target temperatures, acquires the first internal temperature and the first working voltage of the target laser gyro in the frequency stabilization working mode, and fits all the first internal temperatures and all the first working voltages to obtain a cold start curve in the frequency stabilization working mode; the target laser gyro is turned on before each acquisition starts, and the target laser gyro is turned off after each acquisition is completed; An acquisition module is used to acquire a hot start curve of the target laser gyro in each frequency stabilization working mode; A calculation module is provided to obtain an internal temperature, a shell temperature, and a current stable frequency working mode of the target laser gyro in an actual working environment, and calculate a final working voltage of the target laser gyro in the current stable frequency working mode based on the internal temperature, the shell temperature, all cold start curves, and all hot start curves; An adjustment module adjusts the operating voltage of the target laser gyro to the final operating voltage, so that the target laser gyro operates in the current frequency stabilization operating mode; Wherein, the calculation module is specifically used for: Determining whether the target laser gyro is hot started or cold started according to the internal temperature and the housing temperature; If the target laser gyro is cold started, a cold start curve corresponding to the current stable frequency working mode is determined from all cold start curves, and a final working voltage corresponding to the internal temperature is calculated using the cold start curve; If the target laser gyro is hot-started, a hot-start curve corresponding to the current stable frequency operation mode is determined from all hot-start curves, and a final operation voltage corresponding to the internal temperature is calculated using the hot-start curve.

6. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the temperature fitting selection method for the laser gyro frequency stabilization working mode according to any one of claims 1 to 4 is implemented.

7. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the temperature fitting selection method for the laser gyro frequency stabilization working mode as claimed in any one of claims 1 to 4 is implemented.

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