CN112710295A - Energy-saving method and system for optical fiber gyroscope - Google Patents
Energy-saving method and system for optical fiber gyroscope Download PDFInfo
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- CN112710295A CN112710295A CN202011483563.2A CN202011483563A CN112710295A CN 112710295 A CN112710295 A CN 112710295A CN 202011483563 A CN202011483563 A CN 202011483563A CN 112710295 A CN112710295 A CN 112710295A
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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
Abstract
The invention relates to the technical field of optical fiber gyroscopes, and discloses an energy-saving method and an energy-saving system of an optical fiber gyroscope, which are used for greatly reducing the power consumption of the system and prolonging the service life of equipment. The method comprises the following steps: step S1, dividing the power supply into three groups, which are respectively marked as power supply 1, power supply 2 and power supply 3; the power supply 1 supplies power to the logic processing module, the storage module and the RTC module, the power supply 2 supplies power to the AD conversion module, and the power supply 3 supplies power to the optical detector, the signal conditioning module, the drive circuit facing the Y waveguide and the laser drive circuit; step S2, setting the power supply 2 and the power supply 3 to be high and low levels corresponding to a normal working mode and a low power consumption mode of the optical fiber gyroscope respectively; step S3, in the power management process, when the optical fiber gyroscope is switched to the low power consumption mode, the power supply 3 is powered off firstly, and the power supply 2 is powered off later; when the power supply is powered on, the power supply 2 is powered on first, and the power supply 3 is powered on later.
Description
Technical Field
The invention relates to the technical field of optical fiber gyroscopes, in particular to an energy-saving method and system of an optical fiber gyroscope.
Background
The gyroscope is an accurate navigation device, is very important for a navigation system, and gradually develops towards miniaturization and low power consumption along with the development of the optical fiber gyroscope. Especially, under the scene of using battery power supply, in order to guarantee duration, the low-power consumption of gyroscope or the low-power consumption mode research under the low-power consumption of battery have very important meaning.
The optical fiber gyroscope has a laser, a high-precision logic device and the like, and the power of the optical fiber gyroscope is generally more than dozens of milliwatts, so that the optical fiber gyroscope has important practical significance for using a battery to supply power and needing equipment working for a long time to reduce the power consumption; especially in the case of low battery charge, it becomes important how to extend the service life.
Disclosure of Invention
The invention aims to disclose an energy-saving method and system for an optical fiber gyroscope, which are used for greatly reducing the power consumption of the system and prolonging the service life of equipment.
In order to achieve the above object, the present invention discloses an energy saving method for an optical fiber gyroscope, comprising:
step S1, dividing the power supply into three groups, which are respectively marked as power supply 1, power supply 2 and power supply 3; the power supply 1 supplies power to the logic processing module, the storage module and the RTC module, the power supply 2 supplies power to the AD conversion module, and the power supply 3 supplies power to the optical detector, the signal conditioning module, the drive circuit facing the Y waveguide and the laser drive circuit;
step S2, setting the power supply 2 and the power supply 3 to be high and low levels corresponding to a normal working mode and a low power consumption mode of the optical fiber gyroscope respectively;
step S3, in the power management process, when the optical fiber gyroscope is switched to the low power consumption mode, the power supply 3 is powered off firstly, and the power supply 2 is powered off later; when the power supply is powered on, the power supply 2 is powered on first, and the power supply 3 is powered on later.
Preferably, in the power management process, when the duration of the optical fiber gyroscope in the uniform angular velocity or the uniform angular velocity motion exceeds a set threshold, the optical fiber gyroscope enters an intermittent working mode; when the electric quantity of the battery is lower than a set threshold value, forcibly entering an intermittent working mode; the intermittent working mode is that the optical fiber gyroscope intermittently works in a normal working mode and a low-power-consumption mode, and in the intermittent working mode, a normal period T is composed of a low-power-consumption mode duration T1 and a normal working mode duration T2.
Preferably, in the intermittent operation mode, when the optical fiber gyro is switched from the normal operation mode to the low power consumption mode, the step S3 includes:
step 311, storing the driving information externally output to the Y waveguide driving circuit into a memory, recording the output information of the AD conversion module into the memory, and recording the angular velocity W1 at this time;
step S312, outputting the logic processing module to a laser driver and a signal setting low level of a driving circuit facing the Y waveguide;
step S313, controlling the power supply 3 to stop supplying power to the outside;
step S314, controlling the power supply 2 to stop supplying power to the outside;
when the gyroscope returns to the normal operation state from the low power consumption state, the step S3 includes:
step S321, controlling the power supply 2 to start external power supply;
step S322, controlling the power supply 3 to start external power supply;
step S323, calling out Y waveguide driving circuit information from a memory before entering a low power consumption mode;
step S324, the logic processing module normally outputs a laser driving signal, and drives a driving circuit facing the Y waveguide according to the Y waveguide driving information read from the memory;
step S325, the logic processing module calculates a current angular velocity value W2 by adjusting the delay of light passing through the Y waveguide, and determines the angular velocity in the low power consumption time period according to the angular velocity before the low power consumption mode W1 and the current angular velocity value W2.
Preferably, if there is a fixed rule about the angular velocity change in the normal operation period, the step S235 includes, with respect to the angular velocity determination in the low power consumption period:
if the angular acceleration is a, the angular velocity before entering the low power consumption mode is W1, and after the low power consumption time t1, W2 ═ W1+ a × (t 1) can be calculated according to the formula; comparing the W2 'with the actually tested angular velocity W2, and if the W2' is equal to the actually tested angular velocity W2, judging that the system where the gyroscope is located still keeps uniform angular velocity motion in the t1 time period; if the angular acceleration a is not equal to the t 2/W1, calculating the ratio K1, and multiplying the angular velocity in the time of t1 calculated according to the angular acceleration a by K1 to obtain the angular velocity in the time period of t 1;
if the angular velocity change is not regular in the normal operation period or the intermittent operation mode is forced due to low power, the average of W1 and W2 is taken as the angular velocity value in t 1.
In order to achieve the above object, the present invention also discloses an energy saving system for an optical fiber gyroscope, which includes a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor implements the steps of the above method when executing the computer program.
The invention has the following beneficial effects:
the invention can greatly reduce the system power consumption and prolong the service time of the equipment; and when the optical fiber gyroscope is switched between the normal working mode and the low power consumption mode, the condition that the AD working is abnormal or damaged due to the fact that the front end has the level before the AD conversion module obtains power supply can be avoided. Moreover, in the intermittent working mode, the related state parameters can be accurately transmitted and determined; the influence on the overall performance of the equipment due to energy conservation is effectively avoided.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow chart of an energy saving method of an optical fiber gyroscope according to an embodiment of the present invention.
Fig. 2 is a block diagram of an optical fiber gyro system according to an embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating a relationship between a timing sequence and a level state corresponding to each group of power supplies in the intermittent operation mode according to an embodiment of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Example 1
The embodiment discloses an energy saving method for an optical fiber gyroscope, as shown in fig. 1, including the following steps:
step S1, dividing the power supply into three groups, which are respectively marked as power supply 1, power supply 2 and power supply 3; and the power supply 1 supplies power to the logic processing module, the storage module and the RTC module, the power supply 2 supplies power to the AD conversion module, and the power supply 3 supplies power to the optical detector, the signal conditioning module, the drive circuit facing the Y waveguide and the laser drive circuit.
In this step, a system block diagram of the optical fiber gyro refers to fig. 2, which lists the functional modules served by the various groups of power supply stations.
And step S2, setting the power supply 2 and the power supply 3 to correspond to high and low levels of a normal working mode and a low power consumption mode of the optical fiber gyroscope respectively.
Step S3, in the power management process, when the optical fiber gyroscope is switched to the low power consumption mode, the power supply 3 is powered off firstly, and the power supply 2 is powered off later; when the power supply is powered on, the power supply 2 is powered on first, and the power supply 3 is powered on later.
Preferably, in the power management process, when the duration of the optical fiber gyroscope in the uniform angular velocity or the uniform angular velocity motion exceeds a set threshold, the optical fiber gyroscope enters an intermittent working mode; and when the battery power is lower than a set threshold value, forcibly entering an intermittent working mode. As shown in fig. 3, the intermittent operation mode of the present embodiment is that the optical fiber gyroscope intermittently operates in a normal operation mode and a low power consumption mode, and in the intermittent operation mode, a normal period T is composed of a low power consumption mode duration T1 and a normal operation mode duration T2.
Preferably, in the intermittent operation mode, when the optical fiber gyro is switched from the normal operation mode to the low power consumption mode, the step S3 includes:
step S311 stores the driving information externally output to the Y waveguide driving circuit in the memory, records the AD conversion module output information in the memory, and records the angular velocity W1 at this time.
And step S312, outputting the signal of the logic processing module to the laser drive circuit and the drive circuit facing the Y waveguide to set a low level.
Step S313 controls the power supply 3 to stop supplying power to the outside.
And step S314, controlling the power supply 2 to stop supplying power to the outside.
Correspondingly, when the gyroscope returns to the normal operating state from the low power consumption state, the step S3 includes:
step S321, controlling the power supply 2 to start supplying power to the outside.
And step S322, controlling the power supply 3 to start external power supply.
And step S323, calling out the Y waveguide driving circuit information before entering the low power consumption mode from the memory.
Step S324, the logic processing module outputs the laser driving signal normally, and drives the driving circuit facing the Y waveguide according to the Y waveguide driving information read from the memory.
Step S325, the logic processing module calculates a current angular velocity value W2 by adjusting the delay of light passing through the Y waveguide, and determines the angular velocity in the low power consumption time period according to the angular velocity before the low power consumption mode W1 and the current angular velocity value W2.
Preferably, if the angular velocity change has a fixed rule in the normal operation period, such as a uniform angular velocity motion (including a uniform angular velocity motion), the step S235 of determining the angular velocity in the low power consumption period includes: if the angular acceleration is a, the angular velocity before entering the low power consumption mode is W1, and after the low power consumption time t1, W2 ═ W1+ a × (t 1) can be calculated according to the formula; comparing the W2 'with the actually tested angular velocity W2, and if the W2' is equal to the actually tested angular velocity W2, judging that the system where the gyroscope is located still keeps uniform angular velocity motion in the t1 time period; if the values are not equal, the ratio K1 is calculated to be W2/W1, and the angular velocity in the time t1 calculated according to the angular acceleration a is multiplied by K1 to be used as the angular velocity in the time t 1.
In step S325, if there is no fixed rule for the angular velocity change in the normal operation period or the intermittent operation mode is forced due to low power, the average of W1 and W2 is taken as the angular velocity value in t 1.
Example 2
Corresponding to the above embodiments, the present embodiment discloses an energy saving system for an optical fiber gyroscope, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the computer program.
In summary, the energy saving method and system for the optical fiber gyroscope disclosed in the above embodiments of the present invention can greatly reduce the power consumption of the system and prolong the service life of the device; and when the optical fiber gyroscope is switched between the normal working mode and the low power consumption mode, the condition that the AD working is abnormal or damaged due to the fact that the front end has the level before the AD conversion module obtains power supply can be avoided. Moreover, in the intermittent working mode, the related state parameters can be accurately transmitted and determined; the influence on the overall performance of the equipment due to energy conservation is effectively avoided.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An energy saving method for an optical fiber gyroscope is characterized by comprising the following steps:
step S1, dividing the power supply into three groups, which are respectively marked as power supply 1, power supply 2 and power supply 3; the power supply 1 supplies power to the logic processing module, the storage module and the RTC module, the power supply 2 supplies power to the AD conversion module, and the power supply 3 supplies power to the optical detector, the signal conditioning module, the drive circuit facing the Y waveguide and the laser drive circuit;
step S2, setting the power supply 2 and the power supply 3 to be high and low levels corresponding to a normal working mode and a low power consumption mode of the optical fiber gyroscope respectively;
step S3, in the power management process, when the optical fiber gyroscope is switched to the low power consumption mode, the power supply 3 is powered off firstly, and the power supply 2 is powered off later; when the power supply is powered on, the power supply 2 is powered on first, and the power supply 3 is powered on later.
2. The method according to claim 1, wherein during power management, when the length of time that the fiber optic gyroscope is in the uniform angular velocity or the uniform angular velocity motion exceeds a set threshold, an intermittent operation mode is entered; and
when the electric quantity of the battery is lower than a set threshold value, forcibly entering an intermittent working mode;
the intermittent working mode is that the optical fiber gyroscope intermittently works in a normal working mode and a low-power-consumption mode, and in the intermittent working mode, a normal period T is composed of a low-power-consumption mode duration T1 and a normal working mode duration T2.
3. The method according to claim 1 or 2, wherein in the intermittent operation mode, when the optical fiber gyroscope is switched from the normal operation mode to the low power consumption mode, the step S3 includes:
step 311, storing the driving information externally output to the Y waveguide driving circuit into a memory, recording the output information of the AD conversion module into the memory, and recording the angular velocity W1 at this time;
step S312, outputting the logic processing module to a laser driver and a signal setting low level of a driving circuit facing the Y waveguide;
step S313, controlling the power supply 3 to stop supplying power to the outside;
step S314, controlling the power supply 2 to stop supplying power to the outside;
when the gyroscope returns to the normal operation state from the low power consumption state, the step S3 includes:
step S321, controlling the power supply 2 to start external power supply;
step S322, controlling the power supply 3 to start external power supply;
step S323, calling out Y waveguide driving circuit information from a memory before entering a low power consumption mode;
step S324, the logic processing module normally outputs a laser driving signal, and drives a driving circuit facing the Y waveguide according to the Y waveguide driving information read from the memory;
step S325, the logic processing module calculates a current angular velocity value W2 by adjusting the delay of light passing through the Y waveguide, and determines the angular velocity in the low power consumption time period according to the angular velocity before the low power consumption mode W1 and the current angular velocity value W2.
4. The method of claim 3, wherein if the angular velocity changes according to a fixed rule during the normal operation period, the step S235 for determining the angular velocity during the low power consumption period comprises:
if the angular acceleration is a, the angular velocity before entering the low power consumption mode is W1, and after the low power consumption time t1, W2 ═ W1+ a × (t 1) can be calculated according to the formula; comparing the W2 'with the actually tested angular velocity W2, and if the W2' is equal to the actually tested angular velocity W2, judging that the system where the gyroscope is located still keeps uniform angular velocity motion in the t1 time period; if the angular acceleration a is not equal to the t 2/W1, calculating the ratio K1, and multiplying the angular velocity in the time of t1 calculated according to the angular acceleration a by K1 to obtain the angular velocity in the time period of t 1;
if the angular velocity change is not regular in the normal operation period or the intermittent operation mode is forced due to low power, the average of W1 and W2 is taken as the angular velocity value in t 1.
5. An energy saving system for an optical fiber gyroscope, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the method of any one of the preceding claims 1 to 4 are implemented when the computer program is executed by the processor.
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| JPH06201388A (en) * | 1992-12-28 | 1994-07-19 | Sumitomo Electric Ind Ltd | Gyro device |
| JP2002340565A (en) * | 2001-05-16 | 2002-11-27 | Canon Inc | Optical gyro, drive method therefor and signal processing method |
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