Laser gyro with auxiliary electrode and low-pressure fast start-up method

Abstract

The application provides a laser gyro with an auxiliary electrode and a low-pressure rapid starting method, and relates to the technical field of laser gyros.The laser gyro comprises a frame with a cavity, the cavity comprises a capillary, two first electrodes, a second electrode and an auxiliary electrode are symmetrically arranged on the frame, the first electrodes and the second electrode are opposite in polarity, the second electrode is located between the two first electrodes, the auxiliary electrode is arranged close to the second electrode, the auxiliary electrode is the same in polarity as the first electrode, a control circuit is arranged on one side of the frame, and an optical auxiliary device is further arranged on the frame.By arranging the auxiliary electrode near the second electrode, the discharge channel distance between the auxiliary electrode and the second electrode is shorter, the charge density of the discharge end of the auxiliary electrode is improved, the ionization energy of the working gas can be effectively reduced by the light ionization effect of the optical auxiliary device, the working gas in the capillary can be broken down within a few hundred milliseconds, and the starting speed is greatly improved compared with the starting time of several seconds of a traditional laser gyro.

Description

Technical Field

[0001] This invention relates to the field of laser gyroscope technology, specifically to a laser gyroscope with auxiliary electrodes and a low-voltage rapid ignition method. Background Technology

[0002] A laser gyroscope is a high-precision, highly reliable, and long-life inertial instrument. The principle of a laser gyroscope is the Sagnac effect: the clockwise and counterclockwise laser frequencies differ, and the rotational angular velocity can be obtained by measuring the frequency difference between the two laser beams. Its underlying formula is:

[0003]

[0004] Here, S is the loop area. At the speed of light, For the optical length of the loop, The rotational speed of the carrier, This represents the frequency difference between the counter-clockwise and clockwise light paths. In a closed optical path within a square resonant cavity, the light path rotates at a speed of [missing information]. Rotating clockwise increases the light frequency by 100%. The clockwise light frequency decreases to .

[0005] Existing laser gyroscopes typically employ a symmetrical arrangement of dual anodes and a single cathode, or a single anode and dual cathodes, relying on a high-voltage electric field between the anode and cathode to break down a helium-neon gas mixture for laser ignition. However, the high ionization energy of the helium-neon gas mixture, coupled with the long discharge channel distance and low charge accumulation efficiency of traditional electrode structures, results in high ignition voltages required for laser gyroscopes, generally between 2000V and 6000V, and long ignition times, often several seconds or even tens of seconds. Excessively high voltages are detrimental to insulation protection, increase the impact on electronic components, and reduce reliability. Conversely, excessively low voltages further prolong the startup time, sometimes even failing to ignite the laser gyroscope, thus limiting its application in rapid-start scenarios.

[0006] In view of the shortcomings of the existing technology, there is an urgent need for a laser gyroscope that can shorten the ignition time and reduce the ignition voltage. Summary of the Invention

[0007] The purpose of this invention is to provide a laser gyroscope with auxiliary electrodes and a low-voltage rapid ignition method, which effectively solves the problems of high ignition voltage and long ignition time in laser gyroscopes.

[0008] To address the aforementioned problems, this invention discloses a laser gyroscope with an auxiliary electrode. The laser gyroscope includes a frame, a cavity within the frame, and a working gas within the cavity. The cavity includes a capillary tube. A first electrode, a second electrode, and an auxiliary electrode are disposed on the frame, wherein the first electrode and the second electrode have opposite polarities. The first electrode, the second electrode, and the auxiliary electrode all extend into the capillary tube.

[0009] The system has two first electrodes and one second electrode. The two first electrodes are symmetrically arranged, and the second electrode is positioned between the two first electrodes. The auxiliary electrode is positioned close to the second electrode. The auxiliary electrode has the same polarity as the first electrode and the opposite polarity to the second electrode.

[0010] A control circuit is provided on one side of the frame. The control circuit is used to control the external power supply to supply power to the first electrode, the second electrode and the auxiliary electrode. The control circuit is provided with a relay. The relay controls the connection of the first electrode of the external power supply to the first electrode or to the auxiliary electrode. The second electrode of the external power supply is connected to the second electrode through the control circuit.

[0011] The frame is also provided with a light-assisted device, which irradiates the capillary.

[0012] Preferably, the working gas is a helium-neon mixture, and the light-aiding device is an LED auxiliary lamp.

[0013] Preferably, the first electrode is an anode, the second electrode is a cathode, and the auxiliary electrode is an anode.

[0014] Preferably, the first electrode is a cathode, the second electrode is an anode, and the auxiliary electrode is a cathode.

[0015] Preferably, the auxiliary electrode is made of Invar alloy, oxygen-free copper, aluminum, beryllium or tungsten alloy.

[0016] Preferably, the auxiliary electrode includes a main body, a mounting part, and a discharge end; the main body is cylindrical, the mounting part is disc-shaped, the mounting part is disposed at one end of the main body, the discharge end is conical, the discharge end is disposed on the side of the mounting part away from the main body, and the main body, the mounting part, and the discharge end are all coaxially arranged; the end curvature of the discharge end is 1µm-10µm.

[0017] Preferably, the frame is provided with a countersunk hole adapted to the auxiliary electrode, the bottom of the countersunk hole is provided with a channel communicating with the capillary, the inner diameter of the countersunk hole is larger than the outer diameter of the mounting part of the auxiliary electrode, the auxiliary electrode is installed in the countersunk hole, and the discharge end of the auxiliary electrode is located in the channel at the bottom of the countersunk hole; the mounting part of the auxiliary electrode and the countersunk hole are sealed and welded by indium solder.

[0018] Preferably, the capillary has an annular structure, a first channel is provided at the first electrode, one end of the first channel is connected to the first electrode, and the other end is connected to the capillary; a second channel is provided at the second electrode, one end of the second channel is connected to the second electrode, and the other end is connected to the capillary; the auxiliary electrode is disposed at the connection between the capillary and the second channel; a third channel is provided at the auxiliary electrode, one end of the third channel is provided with the countersunk hole and connected to the auxiliary electrode, and the other end is connected to the capillary.

[0019] Preferably, the first electrode and the second electrode are disposed on the side of the frame, the auxiliary electrode is disposed on the front of the frame, and the light-assisted device is disposed opposite to the auxiliary electrode.

[0020] This application also discloses a low-voltage fast ignition method based on a laser gyroscope with auxiliary electrodes. The aforementioned laser gyroscope with auxiliary electrodes includes the following steps:

[0021] S1, activate the light-assisted device on the laser gyroscope, and direct the light-assisted device toward the capillary tube;

[0022] S2, an external power supply powers the laser gyroscope, the relay controls the first electrode to be connected to the auxiliary electrode and disconnected from the first electrode, powering the auxiliary electrode and the second electrode, triggering the pre-ionization of the working gas;

[0023] S3, after the working gas reaches the predetermined ionization state, the relay disconnects electrode one from the auxiliary electrode and connects electrode one to the first electrode. The external power supply supplies power to the first and second electrodes, triggering the formal start of the laser gyroscope.

[0024] Beneficial effects:

[0025] This invention provides a laser gyroscope with an auxiliary electrode and a low-pressure rapid ignition method. By placing the auxiliary electrode near the second electrode, the discharge channel distance between the auxiliary electrode and the second electrode is shortened, increasing the charge density at the discharge end of the auxiliary electrode. Combined with the photo-assisted ionization effect of the LED auxiliary lamp, the ionization energy of the working gas can be effectively reduced, enabling the working gas in the capillary to break down within hundreds of milliseconds. Compared to the several seconds of ignition time of traditional laser gyroscopes, this significantly improves the start-up speed. Moreover, the photo-assisted ionization of the LED auxiliary lamp, combined with the pre-ionization effect of the auxiliary electrode, allows the laser gyroscope to quickly complete the ionization breakdown of the working gas even in extreme environments such as low temperature and low pressure, significantly improving the reliability of the laser gyroscope. Attached Figure Description

[0026] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 This is a schematic diagram of a single-cathode, double-anode structure for a laser gyroscope with auxiliary electrodes disclosed in this invention.

[0028] Figure 2 This is a schematic diagram of a single-anode, dual-cathode structure of a laser gyroscope with auxiliary electrodes disclosed in this invention.

[0029] Figure 3 This is a schematic diagram of the auxiliary electrode structure disclosed in this invention;

[0030] Figure 4 This is a schematic diagram of the structure of the auxiliary electrode mounted on the frame as disclosed in this invention;

[0031] Figure 5 This is a flowchart of a low-voltage rapid ignition method based on a laser gyroscope with auxiliary electrodes, as disclosed in this invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Frame; 2. Capillary tube; 3. First electrode; 4. Second electrode; 5. Auxiliary electrode; 51. Main body; 52. Mounting part; 53. Discharge end; 6. Control circuit; 7. Relay; 8. Countersunk hole; 9. First channel; 10. Second channel; 11. Third channel. Detailed Implementation

[0034] It should be understood that in the description of this invention, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0035] It should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] The technical solution of the present invention will be further illustrated below through specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The content of the embodiments does not constitute a limitation on the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1-4 As shown, this invention discloses a laser gyroscope with an auxiliary electrode 5. By introducing an auxiliary electrode 5 outside the main discharge electrode structure and cooperating with a control circuit 6 and an optical auxiliary device, this invention overcomes the problems of long ignition time and high ignition voltage in existing laser gyroscopes. It can effectively reduce the working gas breakdown threshold, shorten the ignition time, reduce the ignition voltage, and significantly improve the reliability of the laser gyroscope.

[0038] Specifically, a laser gyroscope with an auxiliary electrode 5 includes a frame 1, inside which a cavity is formed to accommodate the working gas. The frame 1, serving as the mounting carrier for the entire laser gyroscope, is made of high-strength, low-expansion-coefficient microcrystalline glass, ceramic, or other materials, effectively reducing the impact of temperature changes on the internal cavity structure and ensuring its stability. The cavity includes a capillary tube 2 and a gas storage hole connected to the capillary tube 2, which is filled with the working gas. The capillary tube 2 serves as the resonant channel for laser propagation, and the gas storage hole stores the working gas, compensates for working gas loss, maintains the stability of the working gas pressure within the cavity, and ensures the continuity and stability of the laser output.

[0039] In this embodiment, the working gas is a helium-neon mixture. In other embodiments, the working gas can also be other gases such as carbon dioxide or argon mixture.

[0040] The frame 1 is equipped with a first electrode 3, a second electrode 4, and an auxiliary electrode 5. All three electrodes are made of a metallic material with excellent conductivity, high temperature resistance, and resistance to ionization corrosion, forming the main discharge electrode of the laser gyroscope. This electrode is used to achieve the formal ionization of the helium-neon gas mixture and the stable generation of laser light. The first electrode 3 and the second electrode 4 have opposite polarities. One end of each of the first electrode 3, the second electrode 4, and the auxiliary electrode 5 is located outside the laser gyroscope, while the other end extends into the capillary tube 2.

[0041] In a preferred structure, two first electrodes 3 are provided and one second electrode 4 is provided, located between the two first electrodes 3. The two first electrodes 3 are symmetrically arranged about the second electrode 4, thereby forming a symmetrical discharge structure in space, so that the electric field is uniformly distributed and the helium-neon mixed gas in the capillary 2 is ionized uniformly.

[0042] The auxiliary electrode 5 is positioned close to the second electrode 4, and has the same polarity as the first electrode 3 but opposite polarity to the second electrode 4. By shortening the discharge channel distance between the auxiliary electrode 5 and the second electrode 4, a high electric field can be formed in a localized area, assisting the main discharge electrode in achieving rapid ionization of the helium-neon mixture and reducing the ignition voltage.

[0043] The laser gyroscope is also equipped with an optical auxiliary device (not shown in the figure). The optical auxiliary device is fixedly installed on the frame 1 near the capillary tube 2, and its irradiation direction is directly facing the inner wall of the capillary tube 2. By using optical assisted ionization, the ionization energy of the helium-neon mixed gas can be reduced. In conjunction with the auxiliary electrode 5, the discharge channel is shortened and the charge density is increased, which can achieve rapid breakdown of the helium-neon mixed gas. The ignition time can be shortened to hundreds of milliseconds, which can greatly improve the start-up speed of the laser gyroscope.

[0044] Specifically, the light-assisted device is an LED auxiliary light. The light-assisted device uses high-brightness, narrow-spectrum ultraviolet LEDs, which can emit ultraviolet light with wavelengths matching the absorption wavelengths of the helium-neon mixed gas ionization.

[0045] like Figure 1 and Figure 2 As shown, the laser gyroscope also includes a control circuit 6, which controls the external power supply to power the first electrode 3, the second electrode 4, and the auxiliary electrode 5 respectively. The control circuit 6 includes a relay 7, which enables rapid switching of the power supply circuit with a response speed down to the millisecond level. The relay 7 selectively controls the connection between the first electrode of the external power supply and either the first electrode 3 or the auxiliary electrode 5 of the laser gyroscope, allowing for flexible switching between the two. The second electrode of the external power supply is directly connected to the second electrode 4 of the laser gyroscope via the control circuit 6, ensuring a stable power supply to the second electrode 4.

[0046] Specifically, in the initial stage of ignition, relay 7 controls the first electrode of the external power supply to connect with the auxiliary electrode 5 of the laser gyroscope, while disconnecting from the first electrode 3. The second electrode of the external power supply connects with the second electrode 4, so that the external power supply only supplies power to the auxiliary electrode 5 and the second electrode 4. The voltage between the auxiliary electrode 5 and the second electrode 4 is 300V-1000V, thereby forming a pre-discharge channel between the auxiliary electrode 5 and the second electrode 4.

[0047] Since the auxiliary electrode 5 is located close to the second electrode 4, and the tip structure of the auxiliary electrode 5 can significantly increase the local electric field strength, the charge density at the tip of the auxiliary electrode 5 accumulates rapidly, which can trigger the pre-ionization of the helium-neon mixture in the capillary 2 under low voltage conditions.

[0048] Based on this, when the gas is in a pre-ionized state, relay 7 switches its connection state, disconnecting electrode one from the auxiliary electrode 5 of the laser gyroscope and connecting electrode one to the first electrode 3. This establishes a main discharge channel between the first electrode 3 and the second electrode 4, completing the formal startup of the laser gyroscope. At this time, the voltage applied between the first electrode 3 and the second electrode 4 is only a few hundred volts, enabling the invention to achieve rapid and reliable startup of the laser gyroscope at a low voltage of less than 1000V. The startup voltage is reduced by 2 to 6 times compared to traditional laser gyroscopes, greatly improving safety.

[0049] During the ignition phase, photons emitted by the LED auxiliary lamp enter the capillary 2, which can photoexcite the helium-neon mixture gas, further increasing the initial ionization level of the gas. Through the synergistic effect of electric field pre-ionization and photo-assisted pre-ionization, the breakdown discharge of the helium-neon mixture gas in the capillary 2 can be achieved in just a few hundred milliseconds, significantly shortening the ignition time.

[0050] In different implementations, the polarity relationship between the first electrode 3, the second electrode 4, and the auxiliary electrode 5 can be configured according to actual design requirements, for example:

[0051] In one alternative embodiment, such as Figure 1 As shown, the first electrode 3 and the auxiliary electrode 5 are both anodes, and the second electrode 4 is a cathode;

[0052] In this layout, two anodes are symmetrically distributed on both sides of the cathode, and the auxiliary anode is placed close to the cathode. This allows a strong local electric field to be formed near the cathode, which quickly accumulates positive charges and forms a short-distance discharge channel with the cathode. Combined with the photoionization effect of the LED auxiliary lamp, this enables low-voltage rapid ignition.

[0053] In another alternative embodiment, such as Figure 2 As shown, the first electrode 3 and the auxiliary electrode 5 are both cathodes, and the second electrode 4 is the anode. This arrangement is consistent with the working principle of the aforementioned embodiment. By placing the auxiliary cathode close to the anode, negative charges are accumulated, the discharge channel distance is shortened, and rapid ionization and breakdown are achieved in conjunction with the LED auxiliary lamp, thus realizing low-voltage rapid ignition.

[0054] Preferably, the auxiliary electrode 5 is made of Invar alloy, oxygen-free copper, aluminum, beryllium or tungsten alloy, all of which have the characteristics of high melting point, excellent conductivity, resistance to ionization corrosion and strong charge accumulation ability. They can adapt to the high temperature and high ionization environment during the long-term operation of the laser gyroscope and avoid the decline in ignition performance caused by electrode wear. At the same time, the tip charge accumulation effect of such materials is significant, which can further improve the charge density of the discharge end 53 of the auxiliary electrode 5, shorten the ignition time and improve the ignition reliability.

[0055] In other embodiments, the auxiliary electrode 5 may also be made of metals such as Invar alloy, oxygen-free copper, and aluminum.

[0056] Specifically, such as Figure 3 As shown, the auxiliary electrode 5 includes a main body 51, a mounting part 52, and a discharge end 53, all three being integrally formed. The main body 51 is cylindrical. The mounting part 52 is disc-shaped and located at one end of the main body 51. The diameter of the mounting part 52 is larger than the outer diameter of the main body 51, used to fix the auxiliary electrode 5 to the frame 1. The discharge end 53 is located on the side of the mounting part 52 away from the main body 51 and has a conical structure. The conical structure can effectively concentrate charge, increase the charge density of the discharge end 53, and shorten the discharge channel distance with the second electrode 4. The main body 51, mounting part 52, and discharge end 53 are all coaxially arranged to ensure smooth charge transfer and accurate discharge direction, avoiding uneven ionization caused by electric field deviation.

[0057] In other embodiments, the auxiliary electrode 5 may also be configured in other structural forms as needed without departing from the principle of the present invention.

[0058] Preferably, the radius of curvature of the discharge terminal 53 is 1µm-10µm. This curvature range ensures the charge accumulation efficiency of the discharge terminal 53 while avoiding excessive wear of the electrode tip due to excessively small curvature. If the curvature is less than 1µm, the electrode tip is easily corroded by ionization, shortening its service life; if the curvature is greater than 10µm, the charge accumulation effect is poor, and rapid ignition cannot be achieved.

[0059] Preferred, such as Figure 4 As shown, the frame 1 has a countersunk hole 8 adapted to the auxiliary electrode 5. The bottom of the countersunk hole 8 has a channel connecting to the capillary tube 2. The inner diameter of the countersunk hole 8 is larger than the outer diameter of the mounting part 52 of the auxiliary electrode 5. The auxiliary electrode 5 is installed in the countersunk hole 8, and the discharge end 53 of the auxiliary electrode 5 is located in the channel at the bottom of the countersunk hole 8. The side of the mounting part 52 of the auxiliary electrode 5 is sealed to the bottom surface of the countersunk hole 8 by indium soldering to ensure the airtightness of the cavity. Indium soldering has good sealing performance, which can prevent the leakage of helium-neon gas mixture in the cavity and prevent external impurities from entering the cavity. The design of the countersunk hole 8 structure allows the discharge end 53 of the auxiliary electrode 5 to be as close as possible to the second electrode 4 and the capillary tube 2, further shortening the discharge channel distance.

[0060] Preferably, the capillary 2 has a ring structure, and a first channel 9 is provided at the first electrode 3, with one end of the first channel 9 connected to the first electrode 3 and the other end connected to the capillary 2. A second channel 10 is provided at the second electrode 4, with one end of the second channel 10 connected to the second electrode 4 and the other end connected to the capillary 2.

[0061] The auxiliary electrode 5 is positioned at the connection between the second channel 10 and the capillary 2, close to the second electrode 4. A third channel 11 is also positioned at the auxiliary electrode 5, with a countersunk hole 8 at one end communicating with the auxiliary electrode 5, and the other end communicating with the capillary 2. This structural arrangement allows the discharge from the auxiliary electrode 5 to directly act on the helium-neon mixture inside the capillary 2, improving pre-ionization efficiency.

[0062] Specifically, frame 1 has a rectangular structure, with the first electrode 3 and the second electrode 4 positioned on the sides of frame 1, and the auxiliary electrode 5 positioned on the front of frame 1. Here, "side" refers to the smaller face of the rectangular frame 1, and "front" refers to the larger face. This design avoids mutual interference between the electrodes and ensures that the discharge directions of the three electrodes are coordinated, guaranteeing uniform ionization of the helium-neon mixture within capillary 2.

[0063] This application also discloses a low-voltage rapid ignition method for a laser gyroscope with auxiliary electrode 5, which achieves step-by-step power supply by switching the relay 7 of the control circuit 6, thereby completing the pre-ionization of the helium-neon mixture and the formal ignition of the laser gyroscope. Figure 5 As shown, the method includes the following steps:

[0064] S1. Activate the optical auxiliary device on the laser gyroscope, directing it towards capillary tube 2. S2. External power supply powers the laser gyroscope. Relay 7 connects electrode one to auxiliary electrode 5 and disconnects it from first electrode 3, supplying power to auxiliary electrode 5 and second electrode 4, triggering pre-ionization of the working gas. S3. Once the working gas reaches the predetermined ionization state, relay 7 disconnects electrode one from auxiliary electrode 5 and connects electrode one to first electrode 3. External power supply powers first electrode 3 and second electrode 4, triggering the formal startup of the laser gyroscope.

[0065] In step S1, the light-assisted device emits ultraviolet light to pre-irradiate the helium-neon mixed gas in the capillary tube 2, thereby reducing the ionization energy of the helium-neon mixed gas.

[0066] In step S2, the external power supply is directed to power only the auxiliary electrode 5 and the second electrode 4, triggering a pre-discharge between the auxiliary electrode 5 and the second electrode 4, thereby pre-ionizing the helium-neon mixture in the capillary 2. Because the auxiliary electrode 5 and the second electrode 4 have opposite polarities, and the discharge channel distance between them is short, and the charge density at the discharge end 53 of the auxiliary electrode 5 is high, combined with the light-assisted ionization effect of the LED auxiliary lamp, the helium-neon mixture in the capillary 2 can complete pre-ionization within hundreds of milliseconds, forming initial ionized plasma, significantly reducing the difficulty and required voltage for subsequent formal ignition.

[0067] In step S3, since an initial ionized plasma has been formed inside the capillary 2, the electric field between the first electrode 3 and the second electrode 4 can quickly ionize the plasma further, forming a stable discharge channel and realizing the formal ignition of the laser gyroscope. After ignition, the LED auxiliary light can be turned off or kept working as needed.

[0068] Furthermore, the power supply time of auxiliary electrode 5 during the pre-ionization process is 200ms-800ms. The specific time can be adjusted according to the structure of auxiliary electrode 5, the brightness of the LED auxiliary light, and the pressure of the helium-neon mixed gas in the cavity to ensure the pre-ionization effect. After pre-ionization is completed, the switching time of relay 7 does not exceed 50ms to avoid the dissipation of plasma after pre-ionization and to ensure the continuity and stability of the formal ignition.

[0069] The applicant declares that the above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention fall within the scope of protection and disclosure of the present invention.

Claims

1. A laser gyroscope with auxiliary electrodes, characterized in that, The laser gyroscope includes a frame (1), a cavity is provided inside the frame (1), the cavity is filled with working gas, and the cavity includes a capillary tube (2); a first electrode (3), a second electrode (4) and an auxiliary electrode (5) are provided on the frame (1), wherein the first electrode (3) and the second electrode (4) have opposite polarities; the first electrode (3), the second electrode (4) and the auxiliary electrode (5) all extend into the capillary tube (2); There are two first electrodes (3) and one second electrode (4). The two first electrodes (3) are symmetrically arranged, and the second electrode (4) is arranged between the two first electrodes (3). The auxiliary electrode (5) is arranged close to the second electrode (4). The auxiliary electrode (5) has the same polarity as the first electrode (3). A control circuit (6) is provided on one side of the frame (1). The control circuit (6) is used to control the external power supply to supply power to the first electrode (3), the second electrode (4) and the auxiliary electrode (5). A relay (7) is provided on the control circuit (6). The relay (7) controls the first electrode of the external power supply to be connected to the first electrode (3) or to the auxiliary electrode (5). The second electrode of the external power supply is connected to the second electrode (4) through the control circuit (6). The frame (1) is also provided with a light-assisted device, which irradiates the capillary (2).

2. A laser gyroscope with auxiliary electrodes according to claim 1, characterized in that, The working gas is a helium-neon mixture, and the light-assisted device is an LED auxiliary light.

3. A laser gyroscope with auxiliary electrodes according to claim 1, characterized in that, The first electrode (3) and the auxiliary electrode (5) are anodes, and the second electrode (4) is a cathode.

4. A laser gyroscope with auxiliary electrodes according to claim 1, characterized in that, The first electrode (3) and the auxiliary electrode (5) are cathodes, and the second electrode (4) is an anode.

5. A laser gyroscope with auxiliary electrodes according to claim 1, characterized in that, The auxiliary electrode (5) is made of Invar alloy, oxygen-free copper, aluminum, beryllium or tungsten alloy.

6. A laser gyroscope with auxiliary electrodes according to claim 5, characterized in that, The auxiliary electrode (5) includes a main body (51), a mounting part (52), and a discharge end (53); the main body (51) is a cylindrical structure, the mounting part (52) is a disc-shaped structure, the mounting part (52) is disposed at one end of the main body (51), the discharge end (53) is a conical structure, the discharge end (53) is disposed on the side of the mounting part (52) away from the main body (51), the main body (51), the mounting part (52), and the discharge end (53) are all coaxially disposed; the end curvature of the discharge end (53) is 1um-10um.

7. A laser gyroscope with auxiliary electrodes according to claim 6, characterized in that, The frame (1) is provided with a countersunk hole (8) adapted to the auxiliary electrode (5). The bottom of the countersunk hole (8) is provided with a channel connecting the capillary (2). The inner diameter of the countersunk hole (8) is larger than the outer diameter of the mounting part (52) of the auxiliary electrode (5). The auxiliary electrode (5) is installed in the countersunk hole (8). The discharge end (53) of the auxiliary electrode (5) is located in the channel at the bottom of the countersunk hole (8). The mounting part (52) of the auxiliary electrode (5) and the countersunk hole (8) are sealed and welded by indium solder.

8. A laser gyroscope with auxiliary electrodes according to claim 7, characterized in that, The capillary (2) has a ring structure. A first channel (9) is provided at the first electrode (3). One end of the first channel (9) is connected to the first electrode (3), and the other end is connected to the capillary (2). A second channel (10) is provided at the second electrode (4). One end of the second channel (10) is connected to the second electrode (4), and the other end is connected to the capillary (2). The auxiliary electrode (5) is located at the connection between the capillary (2) and the second channel (10). A third channel (11) is provided at the auxiliary electrode (5). One end of the third channel (11) is provided with the countersunk hole (8) and is connected to the auxiliary electrode (5). The other end is connected to the capillary (2).

9. A laser gyroscope with auxiliary electrodes according to claim 1, characterized in that, The first electrode (3) and the second electrode (4) are disposed on the side of the frame (1), the auxiliary electrode (5) is disposed on the front of the frame (1), and the light-assisted device is disposed opposite to the auxiliary electrode (5).

10. A low-voltage rapid ignition method based on a laser gyroscope with auxiliary electrodes, applied to a laser gyroscope with auxiliary electrodes as described in any one of claims 1-9, characterized in that, Includes the following steps: S1, activate the light-assisted device on the laser gyroscope, and direct the light-assisted device toward the capillary (2); S2, an external power supply powers the laser gyroscope, and the relay (7) controls the first electrode to be connected to the auxiliary electrode (5) and disconnected from the first electrode (3), powering the auxiliary electrode (5) and the second electrode (4) to trigger the pre-ionization of the working gas; S3, after the working gas reaches the predetermined ionization state, the relay (7) disconnects the first electrode from the auxiliary electrode (5) and connects the first electrode to the first electrode (3). The external power supply supplies power to the first electrode (3) and the second electrode (4), triggering the formal start of the laser gyroscope.

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