A hemispherical resonator lip edge detection device

Abstract

The present invention discloses a lip edge detection device for a hemispherical resonator, which includes an optical detection module and a signal analysis module. The photosensor of the optical detection module is fixed on the upper cover, its probe extends into the upper cover, and its light emission mechanism is arranged below the light shielding plate corresponding to its light transmission hole. The upper cover is detachably connected to the upper surface of the light shielding plate. When detecting the lip edge of the coated hemispherical resonator, it is arranged in the upper cover; when detecting the lip edge of the transparent hemispherical resonator, it is arranged in the upper cover through a light shielding fixture. The lip edge of the coated / transparent hemispherical resonator abuts against the light shielding plate and covers the light transmission hole therein. The photosensor detects the light signal leaking from between the lip edge and the light shielding plate. The signal analysis module receives the light signals transmitted by multiple photosensors and judges the overall uniformity and defective parts of the lip edge of the hemispherical resonator according to the magnitudes of the multiple light signals. The present invention can efficiently and simply complete the lip edge detection of various hemispherical resonators before and after coating.

Description

Technical Field

[0001] The present invention relates to the technical field of hemispherical gyro preparation, and particularly relates to a lip edge detection device for a hemispherical resonator. Background Art

[0002] The hemispherical resonant gyro has the characteristics of simple structure, high precision, high reliability, long service life, etc., and has important application scenarios in the fields of military, aerospace, astronomy, ocean, etc. Its core component is a hemispherical thin-shell resonator. It mainly uses the metal coating layer on the electrode and the metal coating layer on the hemisphere to form a capacitance effect, electrostatically excite the resonator to form vibration, and calculate the rotation angle by detecting its vibration signal. The lip edge of the hemispherical resonator is the main vibration area, and its vibration characteristics determine the accuracy of the hemispherical gyroscope. When there are defects on the lip edge, it will cause frequency splitting and increased loss, which is not conducive to the vibration of the resonator; at the same time, it will cause differences in the electrode spacing of the capacitance effect, thus affecting the accuracy of the gyroscope.

[0003] At present, lip edge detection mainly includes microscopic morphology detection and projection detection. Microscopic morphology detection is to detect it under a microscope or magnifying glass. The advantage of this method is that it can find the fine defects on the lip edge, and the disadvantage is that it lacks detection of the overall uniformity of the lip edge of the hemispherical resonator; projection detection is to project the lip edge of the hemispherical resonator after coating onto the grid line, observe the coincidence of the projection and the grid line, and judge whether the lip edge is flat based on this. This method can observe the overall situation of the lip edge, but it is difficult to detect the details of the lip edge and the uncoated hemisphere. By combining the two detection methods, the detection of fine defects and overall uniformity of the lip edge can be achieved, but the detection efficiency is generally low, the detection method is relatively complex, and more energy needs to be invested, which is not conducive to the quality detection of the hemispherical resonator.

[0004] In addition, with the development of technology, the size of the hemispherical resonant gyro varies according to different application scenarios. At present, according to the size of the hemispherical resonator, it is generally divided into a conventional hemisphere and a micro hemisphere. The structure of the conventional hemisphere is as Figure 1 shown, which is formed by machining, and includes a hemisphere, an inner anchor post connected to the top of the inner wall of the hemisphere, and an outer anchor post connected to the top of the outer wall of the hemisphere. Its hemisphere diameter is generally 20 - 50 mm; the diameter size of the micro hemisphere is generally ≤ 10 mm, which is formed by blowing, and includes a hemisphere and a hollow anchor post formed by inward depression from the top of the hemisphere, as Figure 2 shown. Due to different processing technologies, their shapes are also different. At present, there is no lip edge detection device that can efficiently and simply complete the lip edge detection of various hemispherical resonators before and after coating. Quickly detecting the uniformity of the lip edge of the hemispherical resonant gyro is currently a major problem. Summary of the Invention

[0005] In view of the problems in the background art, the present invention proposes a lip edge detection device for a hemispherical resonator, which can efficiently and simply complete the lip edge detection of various hemispherical resonators before and after coating.

[0006] The present invention adopts the following technical solutions:

[0007] A lip edge detection device for a hemispherical resonator, comprising:

[0008] An optical detection module and a signal analysis module,

[0009] The optical detection module includes a light emission mechanism, a light shielding plate, and a light sensitive mechanism.

[0010] The light sensitive mechanism includes an upper cover and a plurality of photo sensors. The photo sensors are fixed on the upper cover, and their probes extend into the cavity of the upper cover. The plurality of photo sensors are evenly spaced along the circumference of the upper cover.

[0011] The light shielding plate has a light transmission hole, and the light emission mechanism is arranged below the light shielding plate corresponding to the position of the light transmission hole.

[0012] The upper cover is detachably connected to the upper surface of the light shielding plate, and there is a light leakage prevention structure between the upper cover and the light shielding plate to prevent light from leaking out between the two.

[0013] When detecting the lip edge of a coated hemispherical resonator, the coated hemispherical resonator is arranged in the upper cover; when detecting the lip edge of a transparent hemispherical resonator, the transparent hemispherical resonator is arranged in the upper cover through a light shielding fixture. The transparent hemispherical resonator is covered in the light shielding fixture, and there is a gap between the light shielding fixture and the light shielding plate. The lip edge of the coated / transparent hemispherical resonator abuts against the light shielding plate, and the coated / transparent hemispherical resonator covers the light transmission hole therein.

[0014] The photo sensors detect the light signals leaking from between the lip edge and the light shielding plate, and are electrically connected to the signal analysis module. The signal analysis module receives the light signals transmitted by the plurality of photo sensors, and judges the overall uniformity and defective parts of the lip edge of the hemispherical resonator according to the magnitudes of the plurality of light signals.

[0015] As a further improvement of the above technical solution:

[0016] The light shielding plate includes a first light shielding plate, and the light transmission hole includes a first light transmission hole opened on the first light shielding plate, and the coated / transparent micro hemispherical resonator can cover the first light transmission hole therein;

[0017] The light shielding plate further includes a second light shielding plate detachably connected to the first light shielding plate. The second light shielding plate is provided with a first jack for cooperating with the inner anchor post of the conventional coated / transparent hemispherical resonator. The light transmission hole further includes a second light transmission hole opened on the second light shielding plate, and the conventional coated / transparent hemispherical resonator can cover the second light transmission hole therein. The second light transmission hole is communicated with the first light transmission hole.

[0018] There are multiple first light-transmitting holes, and the multiple first light-transmitting holes are evenly distributed along the hollow anchor posts of the coated / transparent micro hemispherical resonator and correspond to the multiple light sensors one by one;

[0019] There are multiple second light-transmitting holes, and the multiple second light-transmitting holes are evenly distributed along the inner anchor posts of the conventional coated / transparent hemispherical resonator and correspond to the multiple light sensors one by one.

[0020] The light-shielding fixture includes a first light-shielding fixture for installing the transparent micro hemispherical resonator. A first accommodation hole is opened on the bottom surface of the first light-shielding fixture. The inverted transparent micro hemispherical resonator is fixed in the first accommodation hole through an adhesive, and the lip edge of the transparent micro hemispherical resonator exposes outside the first accommodation hole.

[0021] The light-shielding fixture further includes a second light-shielding fixture for installing the conventional transparent hemispherical resonator. A second accommodation hole is opened on the bottom surface of the second light-shielding fixture, and a second jack for cooperating with the outer anchor post of the conventional transparent hemispherical resonator is opened at the bottom of the second accommodation hole. The outer anchor post of the conventional transparent hemispherical resonator is inserted into the second jack so that the conventional transparent hemispherical resonator is fixed in the second accommodation hole, and the lip edge of the conventional transparent hemispherical resonator exposes outside the second accommodation hole.

[0022] The light leakage prevention structure includes an annular groove, which is opened on the upper surface of the light-shielding plate and cooperates with the bottom end of the upper cover. The bottom end of the upper cover is clamped in the annular groove.

[0023] A plurality of first magnetic attraction structures are arranged in the annular groove, and a plurality of second magnetic attraction structures corresponding to the first magnetic attraction structures one by one are arranged at the bottom of the upper cover. The plurality of second magnetic attraction structures correspond to the plurality of light sensors one by one, and the first magnetic attraction structure is magnetically connected to the corresponding second magnetic attraction structure.

[0024] The light emission mechanism includes a lamp bead and a lamp cover. The lamp cover is fixed to the lower end of the light-shielding plate and has an upward opening, and the lamp bead is fixed in the lamp cover.

[0025] The upper cover includes a mounting part and a cover body part integrally formed at the lower end of the mounting part. The body of the light sensor is fixed on the mounting part, and the probe of the light sensor passes through the cover body part and is fixed to its body.

[0026] A frustum is formed by the top of the light-shielding fixture extending upward, and a frustum cavity is also formed by the bottom of the cavity of the cover body part extending upward. The frustum is snapped into the frustum cavity.

[0027] Compared with the prior art, the advantages of the present invention are as follows:

[0028] For the hemispherical resonator lip edge detection device of the present invention, after placing the coated hemisphere, a sealed space is formed between the lip edge of the coated hemisphere and the light shield. At this time, light is emitted from the light emission mechanism. After passing through the light shield, the cavity of the coated hemisphere is filled with light. If the circumferential uniformity of the hemisphere lip is good, the detection signals of the photosensor probes should be equally uniform; if the circumferential uniformity of the hemisphere lip edge is poor (there are uneven phenomena such as gaps, cracks, and poor flatness), light will leak out at the uneven places. At this time, there will be differences in the light intensity signals detected by each probe, so as to detect the circumferential uniformity of the lip edge.

[0029] When placing the transparent hemispherical resonator, there is a narrow gap between the jig for accommodating the transparent hemispherical resonator and the light shield. During detection, the principle is the same as that of the coated hemisphere. If the local uniformity is poor, more light will leak out, and then it will be detected by the probe after passing through the gap between the jig and the light shield.

[0030] It can be seen that the present invention can efficiently and simply complete the lip edge detection of various hemispherical resonators before and after coating. Thus, during the preparation process of the hemispherical resonator, this device can be used to detect the circumferential uniformity of the hemisphere lip edge at any time, which is convenient for early detection of defects in the hemisphere lip edge or the influence of the processing technology on its lip edge. The traditional detection method is inefficient and requires a lot of effort. The detection device of the present invention can quickly and conveniently detect the circumferential uniformity of the hemispherical resonator lip edge using the optical principle, improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more easily understand the present invention, the present invention will be described in more detail by referring to the specific embodiments shown in the accompanying drawings. These drawings only depict the typical embodiments of the present invention and should not be considered as limiting the protection scope of the present invention.

[0032] Figure 1 It is a structural diagram of a conventional hemispherical resonator.

[0033] Figure 2 It is a structural diagram of a micro-hemispherical resonator.

[0034] Figure 3 It is a schematic structural diagram of the hemispherical resonator lip edge detection device according to the embodiment of the present invention.

[0035] Figure 4 It is an exploded structural diagram of the optical detection module according to the embodiment of the present invention (taking the detection of a micro-hemispherical resonator as an example).

[0036] Figure 5 It is a schematic cross-sectional structural diagram of the optical detection module according to the embodiment of the present invention (taking the detection of an uncoated micro-hemispherical resonator as an example).

[0037] Figure 6 It is a schematic cross-sectional structural diagram of the detection of an uncoated micro-hemisphere according to the embodiment of the present invention (omitting the light emission mechanism).

[0038] Figure 7 Schematic cross-sectional structure diagram for detecting a coated micro hemisphere according to an embodiment of the present invention (the light emitting mechanism is omitted).

[0039] Figure 8 Schematic cross-sectional structure diagram for detecting a conventional uncoated hemisphere according to an embodiment of the present invention (the light emitting mechanism is omitted).

[0040] Figure 9 Schematic cross-sectional structure diagram for detecting a conventional coated hemisphere according to an embodiment of the present invention (the light emitting mechanism is omitted).

[0041] Figure 10 Schematic structure diagram of the first light shielding plate.

[0042] Figure 11 Schematic structure diagram of the second light shielding plate.

[0043] Figure 12 Schematic structure diagram of the first light shielding fixture.

[0044] Figure 13 Schematic structure diagram of the second light shielding fixture.

[0045] Figure 14 Schematic structure diagram of the upper cover.

[0046] Figure 15 Schematic structure diagram of the upper cover from another perspective.

[0047] Figure 16 Schematic structure diagram of the photosensor.

[0048] Reference numerals:

[0049] 1. Optical detection module; 2. Signal analysis module; 13. Photosensor; 131. Probe; 132. Body; 14. Upper cover; 141. Copper column hole; 142. Through hole; 143. Threaded hole; 144. Second magnetic attraction structure; 145. Step; 146. Mounting portion; 147. Cover body portion; 148. Frustum cavity; 15. First light shielding plate; 151. Annular groove; 152. First light transmission hole; 153. Fixing hole; 154. Connection hole; 155. First magnetic attraction structure; 16. Lamp bead; 17. Lamp cover; 18. Screw; 19. Support rod; 20. Base; 3. Display module; 4. First light shielding fixture; 41. First accommodation hole; 42. Frustum; 5. Second light shielding fixture; 51. Second accommodation hole; 52. Second jack; 6. Second light shielding plate; 61. First jack; 62. Second light transmission hole. Detailed implementation manners

[0050] The embodiments of the present invention will be described below with reference to the accompanying drawings, so that those skilled in the art can better understand the present invention and implement it. However, the listed embodiments are not intended to limit the present invention. Without conflict, the following embodiments and the technical features in the embodiments can be combined with each other, and the same components are denoted by the same reference numerals.

[0051] As Figures 1-9 shown, this embodiment provides a lip edge detection device for a hemispherical resonator, including:

[0052] an optical detection module 1 and a signal analysis module 2,

[0053] The optical detection module 1 includes a light emitting mechanism, a light shielding plate, and a light sensitive mechanism.

[0054] The light sensitive mechanism includes an upper cover 14 and a plurality of photo sensors 13. The photo sensors 13 are fixed on the upper cover 14, and their probes 131 extend into the cavity of the upper cover 14. The plurality of photo sensors 13 are evenly spaced along the circumference of the upper cover 14.

[0055] The light shielding plate has a light transmitting hole, and the light emitting mechanism is arranged below the light shielding plate corresponding to the position of the light transmitting hole.

[0056] The upper cover 14 is detachably connected to the upper surface of the light shielding plate, and there is a light leakage prevention structure between the upper cover 14 and the light shielding plate to prevent light from leaking between the two.

[0057] When detecting the lip edge of a coated hemispherical resonator, the coated hemispherical resonator is arranged in the upper cover 14; when detecting the lip edge of a transparent hemispherical resonator, the transparent hemispherical resonator is arranged in the upper cover 14 through a light shielding fixture. The transparent hemispherical resonator is covered in the light shielding fixture, and there is a gap between the light shielding fixture and the light shielding plate. The lip edge of the coated / transparent hemispherical resonator abuts against the light shielding plate, and the coated / transparent hemispherical resonator covers the light transmitting hole therein.

[0058] The photo sensors 13 detect the light signals leaking from between the lip edge and the light shielding plate, and are electrically connected to the signal analysis module 2. The signal analysis module 2 receives the light signals transmitted by the plurality of photo sensors 13, and judges the overall uniformity and defective parts of the lip edge of the hemispherical resonator according to the magnitudes of the plurality of light signals.

[0059] After placing the coated hemisphere, a closed space is formed between the lip edge of the coated hemisphere and the light shielding plate. At this time, light rays are emitted from the light emitting mechanism, and after passing through the light shielding plate, the cavity of the coated hemisphere is filled with light. If the axial uniformity of the hemisphere lip edge is good, the detection signals of the photo sensor probes should be the same; if the circumferential uniformity of the hemisphere lip edge is poor (there are uneven phenomena such as notches, cracks, and poor flatness), light will leak from the uneven places. At this time, there will be differences in the light intensity signals detected by each probe, so as to detect the circumferential uniformity of the lip edge.

[0060] When placing the transparent hemisphere, there is a narrow gap between the jig for placing the transparent hemisphere and the light-shielding plate. During detection, the principle is the same as that of the coated hemisphere. If the local uniformity is poor, more light will leak out and be detected by the probe after passing through the gap between the jig and the light-shielding plate.

[0061] Therefore, the present invention can efficiently and simply complete the lip edge detection of various hemisphere resonators before and after coating. Thus, during the preparation process of the hemisphere resonator, this device can be used to detect the circumferential uniformity of the hemisphere lip edge at any time, facilitating the early discovery of lip edge defects or the influence of the processing technology on its lip edge. The traditional detection method is inefficient and requires a lot of effort. The detection device of the present invention can quickly and conveniently detect the circumferential uniformity of the lip edge of the hemisphere resonator using the optical principle, improving the detection efficiency.

[0062] In this embodiment, as Figure 10 shown, the light-shielding plate includes a first light-shielding plate 15, and the light-transmitting hole includes a first light-transmitting hole 152 opened on the first light-shielding plate 15, and the coated / transparent micro hemisphere resonator can cover the first light-transmitting hole 152 therein;

[0063] As Figure 11 shown, the light-shielding plate further includes a second light-shielding plate 6 detachably connected to the first light-shielding plate 15. A first jack 61 for cooperating with the inner anchor post of the conventional coated / transparent hemisphere resonator is opened on the second light-shielding plate 6. The light-transmitting hole further includes a second light-transmitting hole 62 opened on the second light-shielding plate 6, and the conventional coated / transparent hemisphere resonator can cover the second light-transmitting hole 62 therein. The second light-transmitting hole 62 and the first light-transmitting hole 152 are communicated.

[0064] When detecting the micro hemisphere resonator, only the first light-shielding plate 15 is needed. When detecting the conventional hemisphere resonator, only the second light-shielding plate 6 needs to be added to the first light-shielding plate 15. Compared with replacing different light-shielding plates according to resonators of different sizes, the efficiency is higher.

[0065] In this embodiment, there are multiple first light-transmitting holes 152. The multiple first light-transmitting holes 152 are evenly spaced along the hollow anchor post of the coated / transparent micro hemisphere resonator and correspond to the multiple light sensors 13 one by one;

[0066] There are multiple second light-transmitting holes 62. The multiple second light-transmitting holes 62 are evenly spaced along the inner anchor post of the conventional coated / transparent hemisphere resonator and correspond to the multiple light sensors 13 one by one.

[0067] Specifically, in this embodiment, the light-transmitting holes are designed as four sector structures with equal areas, which can ensure that the emitted light intensity is the same when the sensors detect in each direction around, and the four holes correspond to the positions of the four sensors on the wall, reducing the test error. The small spacing between the sectors can increase the detection lip area. If the sector area is too small, the light cannot irradiate the lip; if the area is too large, too much light will enter, reducing the accuracy of the sensor detection and increasing the detection error. An appropriate sector area can ensure that an appropriate amount of light enters in all directions of the hemisphere, and at the same time ensure that there is no interference from other light when the sensor detects.

[0068] As Figure 12 shown, the light-shielding fixture includes a first light-shielding fixture 4 for installing a transparent micro hemispherical resonator. A first accommodation hole 41 is provided on the bottom surface of the first light-shielding fixture 4. The inverted transparent micro hemispherical resonator is fixed in the first accommodation hole 41 through an adhesive, and the lip of the transparent micro hemispherical resonator exposes outside the first accommodation hole 41.

[0069] As Figure 13 shown, the light-shielding fixture further includes a second light-shielding fixture 5 for installing a conventional transparent hemispherical resonator. A second accommodation hole 51 is provided on the bottom surface of the second light-shielding fixture 5. A second jack 52 for cooperating with the outer anchor post of the conventional transparent hemispherical resonator is provided at the bottom of the second accommodation hole 51. The outer anchor post of the conventional transparent hemispherical resonator is inserted into the second jack 52 so that the conventional transparent hemispherical resonator is fixed in the second accommodation hole 51, and the lip of the conventional transparent hemispherical resonator exposes outside the second accommodation hole 51.

[0070] The hemispherical resonator is generally made of quartz. The appearance of the uncoated hemispherical resonator is relatively translucent, while the light transmittance of the coated hemispherical resonator is relatively poor. To achieve the circumferential uniformity detection of the lips of various hemispherical resonators, a light-shielding fixture dedicated to the uncoated hemispherical resonator is designed to meet the test requirements. The transparent micro hemispherical resonator can be fixed in its light-shielding fixture through a filler (hot melt adhesive); while the conventional transparent hemispherical resonator has inner and outer anchor posts, and the conventional transparent hemispherical resonator can be fixed by opening a jack on the fixture that cooperates with the outer anchor post. And to avoid the influence of the inner anchor post on the assembly of its lip and the light-shielding plate, a jack also needs to be opened on the light-shielding plate. After the inner anchor post is stuck in, the lip of the hemisphere can be in contact with the light-shielding plate. Place the fixture for installing the hemispherical resonator on the light-shielding plate so that the lip of the hemispherical resonator is in contact with the light-shielding plate. The light leaking from the uneven part of the lip can be transmitted to the sensor probe through the gap between the fixture and the light-shielding plate, realizing the detection of the circumferential uniformity of the lip; using the fixture can block the light transmitted through other parts outside the lip, achieving the purpose of detecting the lip of the uncoated hemispherical resonator.

[0071] At the same time, a small gap should be set between the hemispherical surface and the special fixture to ensure no damage to the spherical surface, and the small gap can reduce light loss.

[0072] Therefore, during the preparation of the hemispherical resonator, a special fixture can be used to detect the circumferential uniformity of the hemisphere lip edge at any time, which is convenient for early detection of lip edge defects or the influence of the processing technology on the lip edge.

[0073] Since the light transmittance of the coated hemisphere becomes poor, the coated hemispherical resonator does not require a special fixture and can directly test the circumferential uniformity of its lip edge.

[0074] In this embodiment, the light leakage prevention structure includes a ring groove 151. The ring groove 151 is opened on the upper surface of the light shielding plate and cooperates with the bottom end of the upper cover 14. The bottom end of the upper cover 14 is clamped in the ring groove 151 to fix the upper cover 14 and enhance light shielding.

[0075] A plurality of first magnetic attraction structures 155 are arranged in the ring groove 151. A plurality of second magnetic attraction structures 144 corresponding to the first magnetic attraction structures 155 one by one are arranged at the bottom of the upper cover 14. The plurality of second magnetic attraction structures 144 correspond to the plurality of light sensors 13 one by one. The first magnetic attraction structure 155 is magnetically connected to the corresponding second magnetic attraction structure 144 to fixedly connect the light shielding plate and the upper cover 14.

[0076] Using the magnetic attraction structure can, on the one hand, further fix the upper cover, and on the other hand, ensure that the light sensors around and the corresponding light transmission holes are in the same orientation, ensuring the tightness of the device, reducing experimental errors, and reducing the complexity of the device.

[0077] In this embodiment, the light emitting mechanism includes a lamp bead 16 and a lamp shade 17. A fixing hole 153 is opened on the light shielding plate for threaded connection with a fastener. The lamp shade 17 is fixed to the lower end of the light shielding plate by the fastener and has an upward opening, and the lamp bead 16 is fixed in the lamp shade 17.

[0078] The lamp bead and the ring groove are coaxially designed. The lamp shade is used as the outer shell of the lamp bead and is fixed on the lower end surface of the light shielding plate through three holes outside the light shielding plate ring by a screw 18.

[0079] The lamp shade 17 is designed as a triangular structure, which can save space and reduce the volume of the device.

[0080] As Figure 14 and Figure 15 shown, in this embodiment, the upper cover 14 includes an installation part 146 and a cover body part 147 integrally formed at the lower end of the installation part 146. As Figure 16 is the structural diagram of the light sensor 13. The body 132 of the light sensor 13 is fixed on the installation part 146. The installation part 146 is a square column structure, and the cover body part 147 is a cylindrical structure and is tangent to the four circumferential side surfaces of the installation part 146. The probe 131 of the light sensor 13 passes through the through hole 142 opened on the cover body part 147 and is fixed to its body 132. A threaded hole 143 is opened on the side surface of the installation part 146 for threaded connection with the body 132 of the light sensor 13.

[0081] In addition, a photosensor 13 is also installed on the top of the installation part 146. The probe of the photosensor 13 on the top passes through the through hole 142 opened on the top surface of the installation part 146 and is fixed to its body. A copper column hole 141 is opened on the top of the installation part 146 for fixedly connecting with the body of the photosensor 13 on the top. The body of the photosensor 13 on the top is fixed to a top plate 11 through a stud 12.

[0082] The photosensor 13 on the top can be used for detecting the coating consistency of the coating resonators in the same batch. If the coating thickness of the coating resonators in the same batch is uniform, the light intensities detected by the photosensor 13 on the top should not differ much. If the film layer thicknesses are different, the data read by the photosensor 13 on the top will differ greatly.

[0083] A frustum 42 extends upward from the top of the light-shielding fixture. A frustum cavity 148 extends upward from the bottom of the cavity of the cover body part 147. The frustum 42 is snapped into the frustum cavity 148.

[0084] By hollowing out a frustum cavity inside the cover body part, the detection space can be reduced, and the detection accuracy can be enhanced. At the same time, when detecting a transparent hemisphere with a special fixture, the side surface of the frustum of the fixture is tangent to the side surface of the hollowed-out frustum cavity to realize the positioning of the fixture, ensure that the hemisphere and the lamp bead are on the same axis, and reduce experimental errors.

[0085] The bottom end part of the side wall of the cover body part is recessed inward to form multiple steps 145. A plurality of screws 18 are fixed on the light-shielding plate. The plurality of screws 18 correspond to the multiple steps 145 one by one. The nut end of the screw 18 abuts against the corresponding step 145.

[0086] The optical detection module 1 further includes a base 20. Connection holes 154 are opened around the light-shielding plate for passing through the screws 18 to fix the support rods 19. The light-shielding plate is supported on the base 20 through multiple support rods 19.

[0087] The detection device of this embodiment further includes a display module 3 for displaying the analysis result of the signal analysis module 2 in the form of data.

[0088] As Figure 6 shown, the detection process of the uncoated microhemisphere resonator (i.e., the transparent microhemisphere resonator 7) is as follows:

[0089] Step 1: Coat a hot-melt adhesive filler in the first accommodation hole 41 of the first light-shielding fixture 4, and gently place the transparent microhemisphere into it so that the top of the transparent microhemisphere is fully connected to the first light-shielding fixture 4.

[0090] Step 2: Open the upper cover 14, place the first light-shielding fixture 4 containing the transparent microhemisphere on the first light-shielding plate 15, and ensure that the transparent microhemisphere covers the four first light-transmitting holes 152 on the first light-shielding plate 15.

[0091] Step 3: Close the upper cover 14, fit the upper cover 14 onto the first light-shielding plate 15 through the annular groove 151 on the first light-shielding plate 15, and further fix the upper cover 14 by using the magnetic attraction device.

[0092] Step 4: Turn on the power supply. The light rays are emitted from the lamp beads 16 and evenly pass through the lip of the hemispherical resonator after passing through the first light-shielding plate 15. If there are defects in the lip, it will cause an increase in the transmitted light intensity, which will ultimately be detected by the light sensor.

[0093] Step 5: Read the indication on the serial port screen. The greater the light intensity detected by the light sensor, the smaller the corresponding indication. Through detection in all directions, the circumferential lip uniformity of the hemispherical resonator is judged according to the light intensity. The hemispherical resonator can also be rotated to further verify.

[0094] As Figure 7 shown, for the coated micro-hemispherical resonator 8, due to its poor light transmittance after coating, a light-shielding fixture is not required, and step 1 can be skipped. After opening the upper cover 14, the coated micro-hemisphere is directly placed on the first light-shielding plate 15, and it is ensured that the transparent micro-hemisphere covers the four first light-transmitting holes 152 on the first light-shielding plate 15. The remaining steps are the same as those in the above example.

[0095] As Figure 8 shown, the detection process of the uncoated conventional hemispherical resonator (i.e., the conventional transparent hemispherical resonator 9) is as follows:

[0096] Step 1: Apply hot-melt adhesive filler into the second jack 52 of the second light-shielding fixture 5, and gently place the transparent conventional hemisphere into it so that the outer support posts of the conventional transparent hemisphere are fully connected to the second light-shielding fixture 5.

[0097] Step 2: Open the upper cover 14, install the second light-shielding plate 6 on the first light-shielding plate 15, and ensure that the four second light-transmitting holes 62 correspond to the four first light-transmitting holes 152 one by one. Then place the second light-shielding fixture 5 containing the conventional transparent hemisphere on the second light-shielding plate 6, and make the inner anchor post of the conventional transparent hemisphere snap into the first jack 61 on the upper surface of the second light-shielding plate 6.

[0098] Step 3: Close the upper cover 14, fit the upper cover 14 onto the second light-shielding plate 6 through the annular groove 151 on the second light-shielding plate 6, and further fix the upper cover by using the magnetic attraction device.

[0099] Step 4: Turn on the power supply. The light rays are emitted from the lamp beads 16 and evenly pass through the lip of the hemispherical resonator after passing through the first light-shielding plate 15. If there are defects in the lip, it will cause an increase in the transmitted light intensity, which will ultimately be detected by the light sensor.

[0100] Step 5: Read the readings on the serial port screen. The greater the light intensity detected by the light sensor, the smaller the corresponding reading. Through detection in all directions, the circumferential lip edge uniformity of the hemispherical resonator is judged according to the light intensity. At the same time, the hemispherical resonator can also be rotated for further verification.

[0101] As Figure 9 shown, for the conventional coated hemispherical resonator 10, since its light transmittance is poor after coating, a light-shielding fixture is not required, and step 1 can be skipped. After step 2 to complete the installation of the second light-shielding plate 6, the conventional coated hemisphere is directly placed on the second light-shielding plate 6, and the inner anchor post of the conventional coated hemisphere is snapped into the first jack 61 on the upper surface of the second light-shielding plate 6. The remaining steps are the same as those in the above example.

[0102] The embodiments described above are only relatively preferred specific embodiments of the present invention. The present specification uses the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", which can all refer to one or more of the same or different embodiments according to the present disclosure. Ordinary variations and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A hemispherical resonator lip edge detection device, characterized in that, Including: an optical detection module (1) and a signal analysis module (2), the optical detection module (1) includes a light emission mechanism, a light shielding plate, and a light sensitive mechanism, the light sensitive mechanism includes an upper cover (14) and a plurality of photo sensors (13), the photo sensors (13) are fixed on the upper cover (14), and their probes (131) extend into the cavity of the upper cover (14), and the plurality of photo sensors (13) are evenly distributed at intervals along the circumference of the upper cover (14), the light shielding plate has a light transmission hole, and the light emission mechanism is arranged below the position of the light shielding plate corresponding to the light transmission hole, the upper cover (14) is detachably connected to the upper surface of the light shielding plate, and there is a light leakage prevention structure between the upper cover (14) and the light shielding plate to prevent light from leaking between the two, when detecting the lip edge of the coated hemispherical resonator, the coated hemispherical resonator is arranged in the upper cover (14); when detecting the lip edge of the transparent hemispherical resonator, the transparent hemispherical resonator is arranged in the upper cover (14) through a light shielding fixture, the transparent hemispherical resonator is covered in the light shielding fixture, there is a gap between the light shielding fixture and the light shielding plate, the lip edge of the coated / transparent hemispherical resonator abuts against the light shielding plate, and the coated / transparent hemispherical resonator covers the light transmission hole therein, the photo sensors (13) detect the light signal leaking from between the lip edge and the light shielding plate, and are electrically connected to the signal analysis module (2), the signal analysis module (2) receives the light signals transmitted by the plurality of photo sensors (13), and judges the overall uniformity and defective parts of the lip edge of the hemispherical resonator according to the magnitudes of the plurality of light signals.

2. The hemispherical resonator lip edge detection device according to claim 1, wherein the light shielding plate includes a first light shielding plate (15), the light transmission hole includes a first light transmission hole (152) opened on the first light shielding plate (15), and the coated / transparent micro hemispherical resonator can cover the first light transmission hole (152) therein; the light shielding plate further includes a second light shielding plate (6) detachably connected to the first light shielding plate (15), a first jack (61) for cooperating with the inner anchor post of the conventional coated / transparent hemispherical resonator is opened on the second light shielding plate (6), the light transmission hole further includes a second light transmission hole (62) opened on the second light shielding plate (6), and the conventional coated / transparent hemispherical resonator can cover the second light transmission hole (62) therein, and the second light transmission hole (62) communicates with the first light transmission hole (152).

3. The hemispherical resonator lip edge detection device according to claim 2, characterized in that, a plurality of first light transmission holes (152) are provided, and the plurality of first light transmission holes (152) are evenly distributed at intervals along the hollow anchor post of the coated / transparent micro hemispherical resonator and correspond to the plurality of photo sensors (13) one by one; a plurality of second light transmission holes (62) are provided, and the plurality of second light transmission holes (62) are evenly distributed at intervals along the inner anchor post of the conventional coated / transparent hemispherical resonator and correspond to the plurality of photo sensors (13) one by one.

4. The hemispherical resonator lip edge detection device according to any one of claims 1-3, characterized in that, the light shielding fixture includes a first light shielding fixture (4) for installing the transparent micro hemispherical resonator, a first accommodation hole (41) is opened on the bottom surface of the first light shielding fixture (4), the inverted transparent micro hemispherical resonator is fixed in the first accommodation hole (41) through an adhesive, and the lip edge of the transparent micro hemispherical resonator exposes outside the first accommodation hole (41).

5. The hemispherical resonator lip edge detection device according to any one of claims 1-3, characterized in that, The light-shielding fixture further includes a second light-shielding fixture (5) for installing a conventional transparent hemispherical resonator. A second accommodation hole (51) is formed in the bottom surface of the second light-shielding fixture (5). A second jack (52) for mating with the outer anchor post of the conventional transparent hemispherical resonator is formed at the bottom of the second accommodation hole (51). The outer anchor post of the conventional transparent hemispherical resonator is inserted into the second jack (52) so that the conventional transparent hemispherical resonator is fixed in the second accommodation hole (51), and the lip edge of the conventional transparent hemispherical resonator protrudes out of the second accommodation hole (51).

6. The hemispherical resonator lip edge detection device according to any one of claims 1-3, characterized in that The light leakage prevention structure includes an annular groove (151). The annular groove (151) is formed in the upper surface of the light-shielding plate and mates with the bottom end of the upper cover (14). The bottom end of the upper cover (14) is clamped in the annular groove (151).

7. The hemispherical resonator lip edge detection device according to claim 6, characterized in that, A plurality of first magnetic attraction structures (155) are provided in the annular groove (151). A plurality of second magnetic attraction structures (144) corresponding to the first magnetic attraction structures (155) one by one are provided at the bottom of the upper cover (14). The plurality of second magnetic attraction structures (144) correspond to the plurality of light sensors (13) one by one. The first magnetic attraction structure (155) is magnetically connected to the corresponding second magnetic attraction structure (144).

8. The hemispherical resonator lip edge detection device according to any one of claims 1-3, characterized in that, The light emission mechanism includes a lamp bead (16) and a lamp cover (17). The lamp cover (17) is fixed to the lower end of the light-shielding plate and has an upward opening. The lamp bead (16) is fixed in the lamp cover (17).

9. The hemispherical resonator lip edge detection device according to any one of claims 1-3, characterized in that, The upper cover (14) includes a mounting portion (146) and a cover body portion (147) integrally formed at the lower end of the mounting portion (146). The body of the light sensor (13) is fixed to the mounting portion (146), and the probe of the light sensor (13) passes through the cover body portion (147) and is fixed to its body.

10. The hemispherical resonator lip edge detection device according to claim 9, characterized in that, A frustum (42) extends upward from the top of the light-shielding fixture. A frustum cavity (148) extends upward from the bottom of the cavity of the cover body portion (147). The frustum (42) is snapped into the frustum cavity (148).

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