CN116182824A - Low-power consumption control method and device for optical fiber gyro light source - Google Patents
Low-power consumption control method and device for optical fiber gyro light source Download PDFInfo
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- CN116182824A CN116182824A CN202310149878.0A CN202310149878A CN116182824A CN 116182824 A CN116182824 A CN 116182824A CN 202310149878 A CN202310149878 A CN 202310149878A CN 116182824 A CN116182824 A CN 116182824A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
- G01C19/72—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
- G01C19/72—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers
- G01C19/721—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
- G01K13/024—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving gases
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
Abstract
The invention relates to a low-power consumption control method and device for a fiber optic gyroscope light source, belongs to the technical field of fiber optic gyroscope control, and solves the problems that an existing light source temperature control device adopts constant light source temperature to control preset temperature and a temperature control circuit adjusts power consumption greatly. The low power consumption control method of the light source of the fiber optic gyroscope comprises the steps of determining a working temperature interval and a set temperature interval of the fiber optic gyroscope according to the use requirement of the fiber optic gyroscope; measuring the working environment temperature of the fiber-optic gyroscope, and setting a light source temperature control preset temperature according to the working environment temperature, so that the light source temperature control preset temperature floats in a set temperature interval according to the working environment temperature of the fiber-optic gyroscope; measuring the temperature of the light source tube core, and comparing the preset temperature of the light source temperature control with the temperature of the light source tube core to obtain the temperature difference between the preset temperature of the light source temperature control and the temperature of the light source tube core; and controlling the temperature of the light source tube core according to the temperature difference between the preset temperature of the light source temperature control and the temperature of the light source tube core. The method reduces the power consumption of the temperature control circuit when the fiber optic gyroscope works at low temperature and high temperature.
Description
Technical Field
The invention relates to the technical field of fiber-optic gyroscope control, in particular to a low-power consumption control method and device for a fiber-optic gyroscope light source.
Background
The fiber optic gyroscope is an optical angular rate sensor, is based on the SAGAC effect, has the characteristics of full solid state, strong environment adaptability and wide precision range, and is widely applied to the fields of navigation, guidance, control and the like of the sea, the land, the air and the sky.
The fiber optic gyroscope generally adopts a temperature control type light source to ensure stable performance of light beams running in an optical path system. The control circuit performs temperature control on the light source by taking heat from one end of the thermoelectric cooler to the other end, so that the temperature of the light source tube core is kept at a temperature control preset temperature. Therefore, the magnitude of the temperature-controlled current depends on the temperature difference across the thermoelectric cooler (i.e., the difference between the ambient temperature and the temperature-controlled preset temperature). It is common in engineering applications to set the light source temperature control preset temperature to a constant 25 ℃. Under the condition that the ambient temperature of the fiber-optic gyroscope is high or low, the temperature control circuit consumes larger power.
In order to reduce the power consumption of the temperature control of the optical fiber gyro light source, the following measures are mainly adopted in engineering application: firstly, performing structural optimization on a light source design, adopting sealing packaging, and reducing direct external heat exchange of a light source tube core; secondly, improving a thermoelectric refrigerator and improving temperature control efficiency; finally, the improved temperature control circuit adopts a pulse width modulation scheme to reduce power consumption.
After the measures are applied, the power consumption of the light source temperature control is still the main part of the power consumption when the fiber-optic gyroscope product works in high-temperature and low-temperature application environments, so that the temperature control method for realizing low power consumption by adopting the specific control device has important significance in engineering.
Disclosure of Invention
In view of the above analysis, the implementation of the invention aims to provide a low-power consumption control device and method for a fiber optic gyroscope light source, which solve the problems that the conventional fiber optic gyroscope light source temperature control device adopts constant light source temperature control preset temperature and a temperature control circuit adjusts large power consumption, and further reduce the power consumption of the temperature control circuit when the fiber optic gyroscope works at low temperature and high temperature on the basis of optimizing the light source structure and improving a thermoelectric refrigerator and the temperature control circuit in the prior art.
The aim of the invention is mainly realized by the following technical scheme:
in one aspect, the invention provides a method for controlling low power consumption of a fiber optic gyroscope light source, which comprises the following steps:
determining a working temperature interval and a set temperature interval of the fiber-optic gyroscope according to the use requirement of the fiber-optic gyroscope;
measuring the working environment temperature of the fiber-optic gyroscope, and setting a light source temperature control preset temperature according to the working environment temperature, so that the light source temperature control preset temperature floats in a set temperature interval according to the working environment temperature of the fiber-optic gyroscope;
measuring the temperature of the light source tube core, and comparing the preset temperature of the light source temperature control with the temperature of the light source tube core to obtain the temperature difference between the preset temperature of the light source temperature control and the temperature of the light source tube core;
and controlling the temperature of the light source tube core according to the temperature difference between the preset temperature of the light source temperature control and the temperature of the light source tube core.
Further, the working temperature interval [ T ] of the fiber-optic gyroscope L ，T H ]The set temperature interval is [ T ] b ，T t ]The setting of the light source temperature control preset temperature according to the working environment temperature comprises the following steps: when the working environment temperature of the fiber-optic gyroscope is within the working temperature interval [ T ] of the fiber-optic gyroscope L ，T H ]When in use, the light source controls the preset temperature T S The determination is made by the following formula:
T L ≤T E ≤T H in the time-course of which the first and second contact surfaces,
wherein T is S The temperature of the light source is controlled to be preset, and the temperature is controlled to be lower than the temperature;
T b setting a low value of a temperature interval and a temperature degree C;
T t setting a high value of a temperature interval and a temperature degree C;
T E the working environment temperature of the fiber-optic gyroscope is DEG C;
T H is a high temperature working temperature, DEG C;
T L is the working temperature at low temperature and is at the temperature of DEG C.
Further, the setting the light source temperature control preset temperature according to the working environment temperature further includes when the working environment temperature T of the fiber-optic gyroscope E Higher than the high-temperature working temperature T H When the temperature of the light source is controlled to be at a preset temperature T S The determination is made by the following formula: t (T) E >T H At the time T S ＝T t 。
Further, the setting the light source temperature control preset temperature according to the working environment temperature further includes when the working environment temperature T of the fiber-optic gyroscope E Below the low temperature operating temperature T L When the temperature of the light source is controlled to be at a preset temperature T S The determination is made by the following formula: t (T) E <T L At the time T S ＝Tb。
Further, the performing temperature control on the light source die according to the temperature difference between the preset temperature of the light source and the temperature of the light source die includes:
inputting a temperature difference delta T between a preset temperature of the light source temperature control and the temperature of the light source tube core into a temperature controller, and calculating a temperature control parameter by the temperature controller through a PID algorithm according to the temperature difference, and performing temperature control on the light source tube core: if delta T is more than 0, heating the light source tube core, and increasing the temperature of the light source tube core; if delta T is less than 0, refrigerating the light source tube core, and reducing the temperature of the light source tube core until the temperature of the light source tube core is equal to the preset temperature of the light source temperature control.
The invention also provides a low-power consumption control device of the optical fiber gyro light source, which is used for realizing the low-power consumption control method of the optical fiber gyro light source according to any one of claims 1 to 5, and comprises a temperature controller, a light source, a temperature preset circuit, a comparator, a light source thermoelectric cooler, a light source thermistor and a light source tube core;
the temperature controller, the temperature preset circuit and the light source thermistor are respectively connected with the comparator, the light source thermoelectric cooler is connected with the temperature controller, and the light source tube core, the light source thermoelectric cooler and the light source thermistor are arranged in the light source.
Further, the temperature preset circuit can measure the ambient temperature and set the light source temperature control preset temperature according to the ambient temperature;
the light source thermistor measures the temperature of the light source tube core, the temperature preset circuit and the light source thermistor respectively output the light source temperature control preset temperature and the light source tube core temperature to the comparator, and the temperature difference between the light source temperature control preset temperature and the light source tube core temperature is obtained;
the temperature controller receives the temperature difference between the preset temperature of the light source temperature control and the temperature of the light source tube core output by the comparator, calculates temperature control parameters through a PID algorithm, and inputs the temperature control parameters into the light source thermoelectric refrigerator;
the light source thermoelectric refrigerator receives the temperature control parameters, controls the current direction, heats or cools the light source tube core, and adjusts the temperature of the light source tube core to the preset temperature of the light source temperature control.
Further, the temperature preset circuit consists of a temperature sensor, a digital signal processor and a digital-to-analog converter;
the temperature sensor measures the working environment temperature of the fiber-optic gyroscope, the digital signal processor sets the light source temperature control preset temperature according to the measured working environment temperature, and the digital-to-analog converter outputs the light source temperature control preset temperature.
Further, the set temperature interval is [15 ℃,40 ℃).
The invention also provides a light source gyro temperature control light source manufactured according to the control method.
Compared with the prior art, the invention has at least one of the following beneficial effects:
1. in the control device, the temperature preset circuit is adopted, and can measure the working environment temperature of the fiber-optic gyroscope, and the temperature control preset temperature of the light source is set according to the working environment temperature.
2. The output of the temperature preset circuit and the output of the light source thermistor can be compared through a comparator, and a feedback control signal is output, so that temperature control is realized.
3. The method of the invention sets the preset temperature of the light source temperature control according to the working environment temperature of the fiber-optic gyroscope, so that the preset temperature of the light source temperature control floats in a set range according to the environment temperature when the fiber-optic gyroscope works in an application environment, the temperature difference regulated by a temperature control circuit is reduced, and the power consumption of the light source of the fiber-optic gyroscope is reduced.
4. The method of the invention sets the preset temperature of the light source temperature control according to the working environment temperature of the fiber-optic gyroscope, can ensure that the fiber-optic gyroscope product stably works at a higher temperature, and expands the working temperature range of the fiber-optic gyroscope product.
In the invention, the technical schemes can be mutually combined to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, like reference numerals being used to refer to like parts throughout the several views.
FIG. 1 is a temperature control preset temperature setting chart of the method of the present invention;
FIG. 2 is a diagram of the apparatus of the present invention.
Reference numerals:
1-a temperature controller; 2-a light source; 3-a temperature preset circuit; a 4-comparator; 5-light source thermoelectric refrigerator (TEC); 6-a light source thermistor; 7-a light source die; 8-a temperature sensor; 9-a digital signal processor; 10-digital-to-analog converter.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the invention, and are not intended to limit the scope of the invention.
The invention provides a low-power consumption control method of a fiber optic gyroscope light source, which comprises the following steps:
determining a working temperature interval and a set temperature interval of the fiber-optic gyroscope according to the use requirement of the fiber-optic gyroscope;
measuring the working environment temperature of the fiber-optic gyroscope, and setting a light source temperature control preset temperature according to the working environment temperature, so that the light source temperature control preset temperature floats in a set temperature interval according to the working environment temperature of the fiber-optic gyroscope;
measuring the temperature of the light source tube core, and comparing the preset temperature of the light source temperature control with the temperature of the light source tube core to obtain the temperature difference between the preset temperature of the light source temperature control and the temperature of the light source tube core;
and controlling the temperature of the light source tube core according to the temperature difference between the preset temperature of the light source temperature control and the temperature of the light source tube core.
The control method adopts variable light source temperature control preset temperature, sets the light source temperature control preset temperature according to the working environment temperature of the fiber-optic gyroscope, enables the light source temperature control preset temperature to float in a set range according to the environment temperature when the fiber-optic gyroscope works in an application environment, reduces the absolute value of the temperature difference between the light source temperature control preset temperature and the working environment temperature, reduces the temperature difference required to be regulated by the temperature control circuit, and can reduce the power consumption of the temperature control circuit when the fiber-optic gyroscope works at low temperature and high temperature.
Specifically, the working temperature interval [ T ] of the fiber-optic gyroscope L ，T H ]The temperature range of the fiber-optic gyroscope, which can be normally used, is determined by the application environment temperature range of the fiber-optic gyroscope, and a certain design allowance is usually reserved in engineering. Exemplary, when the application environment temperature range of the fiber optic gyroscope is-50 ℃ to 80 ℃, and the actual design is carried out, the working temperature range [ T ] of the fiber optic gyroscope L ，T H ]Can be at-55deg.C, 85deg.C]。
Set temperature interval [ T ] b ，T t ]Is a temperature range in which the light source die can operate stably. Exemplary, set temperature interval [ T ] b ，T t ]Is 15 deg.C, 40 deg.C]I.e. the light source temperature is controlled to preset the temperature to be 15 ℃ and 40 DEG C]At any temperature point in the interval, the optical fiber gyro light source tube core can work stably. When the working environment temperature of the fiber-optic gyroscope exceeds the temperature range, the method of the invention controls the temperature of the light source to a preset temperature T S Always in the set temperature interval [ T ] b ，T t ]And the stable operation of the light source tube core of the fiber-optic gyroscope is ensured.
Specifically, measuring the working environment temperature of the fiber-optic gyroscope, setting a light source temperature control preset temperature according to the working environment temperature, so that the light source temperature control preset temperature floats in a set temperature interval according to the working environment temperature of the fiber-optic gyroscope, comprising:
measuring the working environment temperature T of an optical fiber gyroscope E ；
Setting a light source temperature control preset temperature T according to the measured working environment temperature S Light source temperature control preset temperature T S The setting is performed according to the following formula:
equation 1:
equation 2: t (T) S ＝T b T E <T L ；
Equation 3: t (T) S ＝T t T E >T H ；
Wherein T is S The temperature of the light source is controlled to be preset, and the temperature is controlled to be lower than the temperature;
T b setting a low value of a temperature interval and a temperature degree C;
T t setting a high value of a temperature interval and a temperature degree C;
T E the working environment temperature of the fiber-optic gyroscope is DEG C;
T H is a high temperature working temperature, DEG C;
T L is the working temperature at low temperature and is at the temperature of DEG C.
The set temperature interval is [ T ] b ，T t ]The method comprises the steps of carrying out a first treatment on the surface of the Working environment temperature T of optical fiber gyro E Higher than the high-temperature working temperature T H When the light source is controlled to a preset temperature T S Is set as a set temperature interval [ T ] b ，T t ]High value T in (1) t ；
Working environment temperature T of optical fiber gyro E Below the low temperature operating temperature T L When the light source is controlled to a preset temperature T S Is set as a set temperature interval [ T ] b ，T t ]Low value T in b ；
Working environment temperature T of optical fiber gyro E Is located in interval [ T ] L ，T H ]When in use, the light source is controlled to preset temperature T S Is arranged in a set temperature interval [ T ] b ，T t ]And is determined according to equation 1.
Meanwhile, measuring the temperature of the light source tube core, comparing the preset temperature of the light source temperature control with the temperature of the light source tube core to obtain the temperature difference between the preset temperature of the light source temperature control and the temperature of the light source tube core, inputting the temperature difference into a temperature controller, calculating a temperature control parameter by the temperature controller through a PID algorithm, and adjusting the temperature of the light source tube core according to the temperature control parameter.
When the optical fiber gyro just begins to work in an application environment, the temperature of the light source tube core is equal to the working environment temperature of the optical fiber gyro, the temperature of the light source tube core is measured, the preset temperature of the light source temperature control is compared with the temperature of the light source tube core, and the temperature difference delta T between the preset temperature of the light source temperature control and the temperature of the light source tube core is obtained, wherein the temperature difference is also the temperature difference between the preset temperature of the light source temperature control and the working environment temperature of the optical fiber gyro. The temperature difference is input into a temperature controller, the temperature controller calculates temperature control parameters through a PID algorithm, and the temperature of the light source tube core is adjusted according to the temperature control parameters. For a temperature control type light source, in order to ensure stable light beam performance in the working process of the fiber optic gyroscope, the temperature of the light source tube core is required to be always kept at the temperature control preset temperature, so when the temperature of the light source tube core is not equal to the temperature control preset temperature, the light source tube core is required to be heated or cooled by controlling a light source thermoelectric cooler (TEC), and the temperature of the light source tube core is regulated to be equal to the temperature control preset temperature of the light source. If delta T is more than 0, heating the light source tube core, and increasing the temperature of the light source tube core; if delta T is less than 0, refrigerating the light source tube core, and reducing the temperature of the light source tube core; the smaller the absolute difference of Δt, the smaller the power consumption to adjust and maintain the light source die temperature equal to the light source temperature control preset temperature.
Preferably, the setting T is selected b ＝25℃，T t At > 25 ℃, a set temperature interval [25 ℃, T t ]The light source temperature control preset temperature is set to be constant 25 ℃ relative to the constant temperature control method,when the fiber-optic gyroscope works in a high-temperature environment, the working environment temperature T of the fiber-optic gyroscope E Equal to or higher than the high temperature operating temperature T H When the temperature of the light source is controlled to be the preset temperature T S ＝T t Light source temperature control preset temperature T S And the working environment temperature T of the fiber-optic gyroscope E The absolute value of the temperature difference is smaller than the preset temperature (25 ℃) of the light source temperature control and the working environment temperature T of the fiber optic gyroscope in the constant temperature control method E In other words, the temperature difference required to be adjusted is small in the process of controlling the temperature of the light source tube core to be equal to the preset temperature of the light source temperature control, and the power consumption of high-temperature work of the product can be reduced due to the reduction of the temperature difference.
Select setting T b ＝T t >Setting the preset temperature of the light source to be constant 25 ℃ relative to the constant temperature control method, and when the optical fiber gyroscope works in a high-temperature environment, setting the working environment temperature T of the optical fiber gyroscope E Equal to or higher than the high temperature operating temperature T H When the temperature of the light source is controlled to be the preset temperature T S ＝T t Light source temperature control preset temperature T S And the working environment temperature T of the fiber-optic gyroscope E The absolute value of the temperature difference is smaller than the preset temperature (25 ℃) of the light source temperature control and the working environment temperature T of the fiber optic gyroscope in the constant temperature control method E In other words, the temperature difference required to be adjusted is small in the process of controlling the temperature of the light source tube core to be equal to the preset temperature of the light source temperature control, and the power consumption of high-temperature work of the product can be reduced due to the reduction of the temperature difference.
Select setting T t ＝25℃、T b <25 ℃ to form a set temperature interval [ T ] b ，25℃]Setting the preset temperature of the light source to be constant 25 ℃ relative to a constant temperature control method, and when the optical fiber gyroscope works in a low-temperature environment, setting the working environment temperature T of the optical fiber gyroscope E At or below the low operating temperature T L When the temperature of the light source is controlled to be the preset temperature T S ＝T b Light source temperature control preset temperature T S And the working environment temperature T of the fiber-optic gyroscope E The absolute value of the temperature difference is smaller than the preset temperature (25 ℃) of the light source temperature control and the working environment temperature T of the fiber optic gyroscope in the constant temperature control method E Absolute value of temperature difference of (2)That is to say, in the process of controlling the temperature of the light source tube core to be equal to the preset temperature of the light source temperature control, the temperature difference to be adjusted is small, and the power consumption of the low-temperature work of the product can be reduced due to the reduction of the temperature difference.
Select setting T b ＝T t <Setting the preset temperature of the light source to be constant 25 ℃ relative to the constant temperature control method, and when the optical fiber gyroscope works in a low-temperature environment, setting the working environment temperature T of the optical fiber gyroscope E At or below the low operating temperature T L When the temperature of the light source is controlled to be the preset temperature T S ＝T b Light source temperature control preset temperature T S And the working environment temperature T of the fiber-optic gyroscope E The absolute value of the temperature difference is smaller than the preset temperature (25 ℃) of the light source temperature control and the working environment temperature T of the fiber optic gyroscope in the constant temperature control method E In other words, the temperature difference required to be adjusted is small in the process of controlling the temperature of the light source tube core to be equal to the preset temperature of the light source temperature control, and the power consumption of low-temperature work of the product can be reduced due to the reduction of the temperature difference.
Select setting T t >25℃、T b <Setting the preset temperature of the light source to be constant 25 ℃ relative to the constant temperature control method, and when the optical fiber gyroscope works in a high-temperature environment, setting the working environment temperature T of the optical fiber gyroscope E Equal to or higher than the high temperature operating temperature T H When the temperature of the light source is controlled to be the preset temperature T S ＝T t Light source temperature control preset temperature T S And the working environment temperature T of the fiber-optic gyroscope E The absolute value of the temperature difference is smaller than the preset temperature (25 ℃) of the light source temperature control and the working environment temperature T of the fiber optic gyroscope in the constant temperature control method E The absolute value of the temperature difference, the reduction of the temperature difference can reduce the power consumption of the high-temperature work of the product. When the fiber-optic gyroscope works in a low-temperature environment, the working environment temperature T of the fiber-optic gyroscope E At or below the low operating temperature T L When the temperature of the light source is controlled to be the preset temperature T S ＝T b The temperature of the light source is controlled to be preset temperature T S And the working environment temperature T of the fiber-optic gyroscope E The absolute value of the temperature difference is smaller than the preset temperature (25 ℃) of the light source temperature control and the working environment temperature T of the fiber optic gyroscope in the constant temperature control method E In other words, the temperature difference required to be adjusted is small in the process of controlling the temperature of the light source tube core to be equal to the preset temperature of the light source temperature control, and the power consumption of high-temperature work of the product can be reduced due to the reduction of the temperature difference.
The invention also provides a low-power consumption control device of the optical fiber gyro light source, which is used for realizing the low-power consumption control method of the optical fiber gyro light source, and comprises a temperature controller, a light source, a temperature preset circuit, a comparator, a light source thermoelectric cooler, a light source thermistor and a light source tube core;
the temperature controller, the temperature preset circuit and the light source thermistor are respectively connected with the comparator, the light source thermoelectric cooler is connected with the temperature controller, and the light source tube core, the light source thermoelectric cooler and the light source thermistor are arranged in the light source.
The temperature preset circuit consists of a temperature sensor, a digital signal processor and a digital-to-analog converter, wherein the temperature sensor is used for measuring the working environment temperature of the fiber-optic gyroscope, the digital signal processor is used for setting the light source temperature control preset temperature according to the measured working environment temperature, and the light source temperature control preset temperature is output through the digital-to-analog converter;
the light source thermistor measures the temperature of the light source tube core, and the temperature preset circuit and the light source thermistor respectively output the temperature control preset temperature and the temperature of the light source tube core to the comparator to obtain the temperature difference between the temperature control preset temperature and the temperature of the light source tube core;
the temperature controller receives the temperature difference between the temperature control preset temperature and the light source tube core temperature output by the comparator, calculates temperature control parameters through a PID algorithm, and inputs the temperature control parameters into the light source thermoelectric refrigerator;
the light source thermoelectric refrigerator receives the temperature control parameters, controls the current direction, heats or cools the light source tube core, and adjusts the temperature of the light source tube core to the temperature control preset temperature.
According to the fiber-optic gyroscope temperature control light source prepared by the control method and the device, the light source temperature control preset temperature is set according to the working environment temperature of the fiber-optic gyroscope, so that when the fiber-optic gyroscope works in an application environment, the light source temperature control preset temperature floats within a set range according to the environment temperature, the temperature difference adjusted by a temperature control circuit is reduced, and the power consumption of the temperature control light source is reduced.
Examples
Working temperature interval [ T ] of certain optical fiber gyro product L ，T H ]Is at-55deg.C, 85deg.C]The constant temperature control method controls the temperature of the light source to a preset temperature T S Set to 25 ℃, the set temperature interval [ T ] of the invention b ，T t ]Is [15 ℃,35℃ ]]The comparison (representing the temperature control current) of the temperature difference of the product in the application environment, which is required to be controlled, is shown in table 1, and the method has the advantages of smaller temperature difference required to be controlled and smaller power consumption. Compared with the prior art, the method further reduces the power consumption of the temperature control system for ensuring the normal operation of the light source in the set temperature range when the fiber optic gyroscope works at low temperature and high temperature.
When T is E =90 ℃, i.e. T E ＞T H The initial temperature of the light source die is equal to T E According to formula 3, in the control method of the present invention, the light source temperature is controlled to a preset temperature T S The refrigeration temperature difference is |T E -T S I, T E -T S Is 55 ℃; similarly, in the constant temperature control method, the light source temperature is controlled to preset temperature T S The refrigeration temperature difference was 65 ℃.
When T is E =85 ℃, i.e. T E ＝T H The initial temperature of the light source die is equal to T E According to formula 1, in the control method of the present invention, the light source temperature is controlled to a preset temperature T S The refrigeration temperature difference is |T E -T S I, T E -T S Is 50 ℃; similarly, in the constant temperature control method, the light source temperature is controlled to preset temperature T S The refrigeration temperature difference was 60 ℃.
When T is E =60 ℃, i.e. T L ＜T E ＜T H The initial temperature of the light source die is equal to T E According to formula 1, in the control method of the present invention, the light source temperature is controlled to a preset temperature T S =31.4deg.C, refrigeration temperature difference T E -T S I, 28.6 ℃; similarly, in the constant temperature control method, the light source temperature is controlled to preset temperature T S The refrigeration temperature difference was 35 ℃.
When T is E =10deg.C, i.e. T L ＜T E ＜T H The initial temperature of the light source die is equal to T E According to formula 1, in the control method of the present invention, the light source temperature is controlled to a preset temperature T S =24.3 ℃, heating temperature difference T E -T S I, i.e. 14.3 ℃; similarly, in the constant temperature control method, the light source temperature is controlled to preset temperature T S =25 ℃, the heating temperature difference is 15 ℃.
When T is E = -20 ℃, i.e. T L ＜T E ＜T H The initial temperature of the light source die is equal to T E According to formula 1, in the control method of the present invention, the light source temperature is controlled to a preset temperature T S =20 ℃, heating temperature difference of |t E -T S I, 40 ℃; similarly, in the constant temperature control method, the light source temperature is controlled to preset temperature T S =25 ℃, the heating temperature difference is 45 ℃.
When T is E = -55 ℃, i.e. T L ＝T E The initial temperature of the light source die is equal to T E According to formula 1, in the control method of the present invention, the light source temperature is controlled to a preset temperature T S =15 ℃, heating temperature difference of |t E -T S I, 70 ℃; similarly, in the constant temperature control method, the light source temperature is controlled to preset temperature T S =25 ℃, the heating temperature difference is 80 ℃.
When T is E = -60 ℃, i.e. T E ＜T L The initial temperature of the light source die is equal to T E According to formula 2, in the control method of the present invention, the light source temperature is controlled to a preset temperature T S =15 ℃, heating temperature difference of |t E -T S I, 75 ℃; similarly, in the constant temperature control method, the light source temperature is controlled to preset temperature T S =25 ℃, the heating temperature difference is 85 ℃.
TABLE 1 comparison of temperature differences between the inventive and conventional methods requiring temperature control
As can be seen from Table 1, in the method of the present invention, the light source temperature is controlled to a preset temperature T S And the working environment temperature T of the fiber-optic gyroscope E The absolute value of the temperature difference is smaller than the preset temperature (25 ℃) of the light source temperature control and the working environment temperature T of the fiber optic gyroscope in the constant temperature control method E In other words, the temperature difference required to be adjusted is small in the process of controlling the temperature of the light source tube core to be equal to the preset temperature of the light source temperature control, and the power consumption of high-temperature work of the product can be reduced due to the reduction of the temperature difference.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The low-power consumption control method of the optical fiber gyro light source is characterized by comprising the following steps of:
determining a working temperature interval and a set temperature interval of the fiber-optic gyroscope according to the use requirement of the fiber-optic gyroscope;
measuring the working environment temperature of the fiber-optic gyroscope, and setting a light source temperature control preset temperature according to the working environment temperature, so that the light source temperature control preset temperature floats in a set temperature interval according to the working environment temperature of the fiber-optic gyroscope;
measuring the temperature of the light source tube core, and comparing the preset temperature of the light source temperature control with the temperature of the light source tube core to obtain the temperature difference between the preset temperature of the light source temperature control and the temperature of the light source tube core;
and controlling the temperature of the light source tube core according to the temperature difference between the preset temperature of the light source temperature control and the temperature of the light source tube core.
2. The control method according to claim 1, wherein an operation temperature interval [ T ] of the optical fiber gyro L ，T H ]The set temperature interval is [ T ] b ，T t ]The setting of the light source temperature control preset temperature according to the working environment temperature comprises the following steps: when the working environment temperature of the fiber-optic gyroscopeLocated in the working temperature interval [ T ] of the fiber optic gyroscope L ，T H ]When in use, the light source controls the preset temperature T S The determination is made by the following formula:
T L ≤T E ≤T H in the time-course of which the first and second contact surfaces,
wherein T is S The temperature of the light source is controlled to be preset, and the temperature is controlled to be lower than the temperature;
T b setting a low value of a temperature interval and a temperature degree C;
T t setting a high value of a temperature interval and a temperature degree C;
T E the working environment temperature of the fiber-optic gyroscope is DEG C;
T H is a high temperature working temperature, DEG C;
T L is the working temperature at low temperature and is at the temperature of DEG C.
3. The control method according to claim 2, wherein the setting the light source temperature control preset temperature according to the operating environment temperature further comprises when the fiber-optic gyroscope operating environment temperature T E Higher than the high-temperature working temperature T H When the temperature of the light source is controlled to be at a preset temperature T S The determination is made by the following formula: t (T) E >T H At the time T S ＝T t 。
4. The control method according to claim 2, wherein the setting the light source temperature control preset temperature according to the operating environment temperature further comprises when the fiber-optic gyroscope operating environment temperature T E Below the low temperature operating temperature T L When the temperature of the light source is controlled to be at a preset temperature T S The determination is made by the following formula: t (T) E <T L At the time T S ＝Tb。
5. The control method according to claim 1, wherein the performing temperature control on the light source die according to a temperature difference between a preset temperature of the light source and a temperature of the light source die comprises:
inputting a temperature difference delta T between a preset temperature of the light source temperature control and the temperature of the light source tube core into a temperature controller, and calculating a temperature control parameter by the temperature controller through a PID algorithm according to the temperature difference, and performing temperature control on the light source tube core: if delta T is more than 0, heating the light source tube core, and increasing the temperature of the light source tube core; if delta T is less than 0, refrigerating the light source tube core, and reducing the temperature of the light source tube core until the temperature of the light source tube core is equal to the preset temperature of the light source temperature control.
6. A fiber optic gyroscope light source low power consumption control device for implementing the fiber optic gyroscope light source low power consumption control method according to any one of claims 1-5, characterized by comprising a temperature controller, a light source, a temperature preset circuit, a comparator, a light source thermoelectric cooler, a light source thermistor and a light source tube core;
the temperature controller, the temperature preset circuit and the light source thermistor are respectively connected with the comparator, the light source thermoelectric cooler is connected with the temperature controller, and the light source tube core, the light source thermoelectric cooler and the light source thermistor are arranged in the light source.
7. The control device according to claim 6, wherein the temperature presetting circuit can measure an ambient temperature and set a light source temperature control preset temperature according to the ambient temperature;
the light source thermistor measures the temperature of the light source tube core, the temperature preset circuit and the light source thermistor respectively output the light source temperature control preset temperature and the light source tube core temperature to the comparator, and the temperature difference between the light source temperature control preset temperature and the light source tube core temperature is obtained;
the temperature controller receives the temperature difference between the preset temperature of the light source temperature control and the temperature of the light source tube core output by the comparator, calculates temperature control parameters through a PID algorithm, and inputs the temperature control parameters into the light source thermoelectric refrigerator;
the light source thermoelectric refrigerator receives the temperature control parameters, controls the current direction, heats or cools the light source tube core, and adjusts the temperature of the light source tube core to the preset temperature of the light source temperature control.
8. The control device according to claim 6, wherein the temperature preset circuit is composed of a temperature sensor, a digital signal processor and a digital-to-analog converter;
the temperature sensor measures the working environment temperature of the fiber-optic gyroscope, the digital signal processor sets the light source temperature control preset temperature according to the measured working environment temperature, and the digital-to-analog converter outputs the light source temperature control preset temperature.
9. The control method according to claim 1, wherein the set temperature interval is [15 ℃,40 ℃).
10. The light source gyro temperature control light source manufactured by the control method according to claim 1.
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| CN117470209A (en) * | 2023-12-25 | 2024-01-30 | 江西驰宇光电科技发展有限公司 | Thermal balance control method and device for laser gyroscope |
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| CN117470209A (en) * | 2023-12-25 | 2024-01-30 | 江西驰宇光电科技发展有限公司 | Thermal balance control method and device for laser gyroscope |
| CN117470209B (en) * | 2023-12-25 | 2024-03-19 | 江西驰宇光电科技发展有限公司 | Thermal balance control method and device for laser gyroscope |
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