Optical testing device for steam concentration in miniature rubidium atomic clock air chamber

Abstract

The embodiment of the invention provides an optical testing device for steam concentration in a gas chamber of a miniature rubidium atomic clock, and relates to the technical field of rubidium atomic clock testing. The invention discloses an optical testing device for steam concentration in a miniature rubidium atomic clock air chamber. A driving assembly and an adjusting assembly which are used for adjusting the distance between the light-emitting sources are arranged on the left side of the rack, and the driving assembly comprises a double-head motor fixed between the bottom frame and the back frame. The center of the rack is provided with a transposition assembly used for converting the position of a miniature rubidium atomic clock air chamber, and the two sides of the rack are each provided with a traction assembly and a protection assembly which are used for optical test protection. The driving assembly and the adjusting assembly are used for realizing a self-adaptive spacing adjustment effect on the luminous source, and the transposition assembly is used for carrying out ordered transposition test operation on the plurality of groups of rubidium atomic clock air chambers according to actual test requirements. The traction assembly and the protection assembly are used for carrying out protection operations such as electromagnetic signals and light rays on the miniature rubidium atomic clock air chamber in a test state on the rack.

Description

Technical Field

[0001] The invention belongs to the technical field of rubidium atomic clock testing, and in particular relates to an optical testing device for steam concentration in a gas chamber of a miniature rubidium atomic clock. Background Art

[0002] Rubidium clock is also called rubidium atomic clock. Rubidium frequency standard is a passive atomic frequency. It uses the transition between ground state hyperfine energy levels. Rubidium atomic clock consists of rubidium quantum part and voltage-controlled crystal oscillator. The short-term stability of rubidium atomic frequency standard can reach up to 10 -12 The accuracy is ±5×10 -11 , with the characteristics of small size and high precision.

[0003] In the prior art (the patent application with publication number CN105043930A and patent name of "Detection Device and Method for Alkali Metal Vapor Atom Density in Microstructure Alkali Metal Gas Chamber"), the detection of each gas chamber unit under the same environment can ensure the consistency of the detection of each gas chamber unit and improve the accuracy of the measurement result. In the process of implementing this technical solution, it is found that there are at least the following problems in the prior art.

[0004] During the test of the steam concentration in the gas chamber of the micro-rubidium atomic clock, a group of optical lenses amplifies and enhances the test light emitted by the light source, and then another group of optical lenses transmits, collects and receives the light penetrating the gas chamber of the micro-rubidium atomic clock to obtain the steam concentration data in the gas chamber of the micro-rubidium atomic clock. Here, the intensity of light penetrating the gas chamber of the micro-rubidium atomic clock cannot be accurately adjusted by adjusting the optical test distance between the light source and the optical lenses, and the position of the light source still needs to be manually adjusted, which is not worth the effort. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems in the prior art that the optical spacing of the light source cannot be adaptively adjusted according to the requirements of field testing. To this end, the present application proposes an optical testing device for vapor concentration in a gas chamber of a micro rubidium atomic clock.

[0006] To achieve the above purpose, the specific technical solutions of the present invention are as follows: An optical test device for vapor concentration in a gas chamber of a miniature rubidium atomic clock comprises a stand, one side of the bottom of the stand is fixedly connected to a base frame, both sides of the top of the stand are fixedly connected to side frames, and the back of the stand is fixedly connected to a back frame; A driving component and an adjusting component for adjusting the spacing between light sources are respectively arranged on the left side of the platform, and the driving component includes a double-headed motor fixed between the base frame and the back frame. A transposition component for converting the position of the gas chamber of a micro-rubidium atomic clock is arranged at the center of the platform, and a pulling component and a protection component for optical test protection are respectively arranged on both sides of the platform.

[0007] Preferably: the driving assembly also includes a driving bevel gear fixed on an output shaft of the double-headed motor, and a first driven bevel gear is meshed on one side of the driving bevel gear, an inner cavity of the first driven bevel gear is fixedly connected to a rotating shaft that rotates with the stand, and a first main bevel gear is fixedly connected to the side of the rotating shaft away from the first driven bevel gear, and a first secondary bevel gear is arranged on one side of the first main bevel gear.

[0008] Preferably: the adjustment assembly includes a first electric push rod fixed on the other side of the first sub-bevel gear, and the outer side of the first electric push rod is provided with a rotating rod that cooperates with the rotation of the stand, the side of the rotating rod away from the first sub-bevel gear is fixedly connected to a threaded rod that cooperates with the rotation of the stand, and a threaded sleeve is threadedly connected to the threaded rod, a bracket is fixedly connected to the threaded sleeve, and a laser is fixedly connected to the top of the bracket.

[0009] Preferably: the shifting assembly includes a second electric push rod embedded in the rotating shaft away from the inner cavity of the first driven bevel gear, and the piston rod of the second electric push rod is fixedly connected to the second main bevel gear, one side of the second main bevel gear is meshed with the second secondary bevel gear, and the inner cavity of the second secondary bevel gear is fixedly connected to a driving circular gear that cooperates with the rotation of the gantry through a fixing rod, the top of the driving circular gear is meshed with a gear ring, and the other side of the gear ring is meshed with a driven circular gear that cooperates with the rotation of the gantry.

[0010] Preferably: the pulling assembly includes a third electric push rod embedded in the other output shaft of the double-headed motor, and the piston rod of the third electric push rod is fixedly connected to the third main bevel gear, one side of the third main bevel gear is meshed with the third sub-bevel gear, and the inner cavity of the third sub-bevel gear is fixedly connected to the transfer circular gear through a fixing rod and rotatably cooperates with the back frame, the upper and lower sides of the transfer circular gear are diagonally meshed with rack plates, and the opposite side of the rack plate is fixedly connected to a connecting piece that slides with the back frame.

[0011] Preferably: the protection component includes a blocking frame fixed on the front side of the connecting piece, and the opposite side of the blocking frame is fixedly connected to a limiting protrusion, the other side of the blocking frame is provided with a limiting groove which is snap-fitted with the limiting protrusion, and the outer side of the blocking frame is fixedly connected to a large telescopic cover, the outer end of the large telescopic cover is fixedly connected to a connecting frame, and the outer side of the connecting frame is fixedly connected to a small telescopic cover which is fixedly matched with the side frame, and the blocking frame, the large telescopic cover, the connecting frame and the small telescopic cover are all slidably matched with the stand.

[0012] Preferably: a through groove slidably matched with the bracket is opened on the left side of the top of the stand, and an annular slide groove is opened at the outer end of the inner cavity of the gear ring, and both sides of the bottom of the inner cavity of the annular slide groove are slidably connected with support slides fixedly matched with the stand.

[0013] Preferably: a tightening rod is threadedly connected to the inner cavity of the gear ring all around, and a screwing head is fixedly connected to the outer side of the tightening rod, a positioning head is provided on the inner side of the tightening rod, and a rubidium atomic clock gas chamber is clamped on the inner side of the positioning head.

[0014] Preferably: T-shaped slide grooves are provided on the upper and lower sides of the inner cavity of the back frame, and T-shaped sliders fixedly matched with the rack plate are slidably connected to both sides of the inner cavity of the T-shaped slide groove, and the left side of the top of the stand is fixedly connected with a collimator, attenuator and beam expander used in conjunction with the rubidium atomic clock gas chamber.

[0015] Preferably, the right side of the top of the platform is fixedly connected with a transmission mirror and a condenser that cooperate with the rubidium atomic clock gas chamber, a collimator, an attenuator and a beam expander for optical testing, as well as a photodiode matrix detector and an optical signal collector for collecting and receiving optical data.

[0016] The optical testing device for vapor concentration in a gas chamber of a miniature rubidium atomic clock of the present invention has the following advantages: 1. An optical testing device for steam concentration in a gas chamber of a miniature rubidium atomic clock. During the test of the steam concentration in the gas chamber of the miniature rubidium atomic clock, a double-headed motor first provides a unified driving source, and the meshing transmission of the driving bevel gear and the first driven bevel gear cooperates with the first main bevel gear to mesh and rotate with the first sub-bevel gear through the rotating shaft. At the same time, the first electric push rod adjusts the meshing stroke of the first main bevel gear with the first sub-bevel gear, and the rotating rod drives the threaded sleeve through the threaded rod to achieve horizontal displacement adjustment. The threaded sleeve drives the laser on the stand through the bracket to achieve an adaptive spacing adjustment effect. After the emitted light is straightened and enhanced by the collimator, attenuator and beam expander, it is emitted to the gas chamber of the rubidium atomic clock, which is beneficial for the gas chamber of the rubidium atomic clock to capture strong light and improve the test accuracy of the steam concentration in the gas chamber of the rubidium atomic clock.

[0017] 2. An optical testing device for steam concentration in a miniature rubidium atomic clock gas chamber. Next, the second electric push rod first adjusts the meshing stroke between the second main bevel gear and the second sub-bevel gear, and the second sub-bevel gear drives two sets of driving circular gears to rotate synchronously. The two sets of driving circular gears drive two sets of gear rings to achieve a low-speed rotation effect. At the same time, the two sets of driven circular gears play an auxiliary transmission support role for the two sets of gear rings in a low-speed rotation state, and a plurality of tightening rods, tightening heads and positioning heads are used to pre-position a plurality of rubidium atomic clock gas chambers. Then, the two sets of gear rings in a low-speed rotation state perform orderly transposition test operations on a plurality of rubidium atomic clock gas chambers according to actual test requirements, thereby meeting the high-efficiency test requirements for steam concentration in a plurality of rubidium atomic clock gas chambers.

[0018] 3. An optical testing device for steam concentration in a gas chamber of a miniature rubidium atomic clock. Then, the third electric push rod first adjusts the meshing stroke between the third main bevel gear and the third sub-bevel gear, and the third sub-bevel gear drives the intermediate circular gear to rotate. The intermediate circular gear drives two diagonally distributed groups of rack plates and connecting pieces to perform telescopic movements, and the two diagonally distributed groups of rack plates drive two groups of blocking skeletons to shrink inward or expand outward through the connecting pieces. The two groups of blocking skeletons shrink inward through two groups of large telescopic covers, connecting skeletons and small telescopic covers to protect the stand, and expand outward to expose the stand, and the protective measures are released to prevent external electromagnetic signals, light and other factors from interfering with the optical testing of steam concentration in the gas chambers of several groups of rubidium atomic clocks, thereby further improving the optical testing accuracy of steam concentration in the gas chambers of several groups of rubidium atomic clocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a front view of the initial state of the structure of an optical testing device for vapor concentration in a gas chamber of a micro rubidium atomic clock of the present invention; Figure 2 It is a side view of the initial state of the structure of an optical testing device for vapor concentration in a gas chamber of a miniature rubidium atomic clock of the present invention; Figure 3 It is a rear view of the structure of the optical testing device for vapor concentration in the gas chamber of a miniature rubidium atomic clock of the present invention in the working state; Figure 4 It is a partial cross-sectional view of the structure of an optical testing device for vapor concentration in a gas chamber of a miniature rubidium atomic clock according to the present invention; Figure 5 It is a partial rear view of the structure of an optical testing device for vapor concentration in a gas chamber of a miniature rubidium atomic clock of the present invention; Figure 6 It is a side view of the structure of the stand, the driving assembly and the adjusting assembly of the present invention; Figure 7 It is a side cross-sectional view of the drive assembly and the adjustment assembly structure of the present invention; Figure 8 A bottom view of the drive assembly and the transposition assembly structure of the present invention; Fig. 9 It is a bottom exploded view of the drive assembly and the transposition assembly structure of the present invention; Fig.10It is a partial top view of the drive assembly and the transposition assembly structure of the present invention; Fig.11 It is a partial rear cross-sectional view of the drive assembly and the transposition assembly structure of the present invention; Fig.12 It is a partial front view of the transposition assembly structure of the present invention; Fig.13 It is a rear cross-sectional view of the back frame, double-head motor, pulling assembly and protection assembly structure of the present invention; Fig.14 It is a rear view of the double-headed motor, pulling assembly and protection assembly structure of the present invention; Fig.15 It is a working state diagram of the double-head motor, pulling assembly and protection assembly structure of the present invention; Fig.16 It is a rear cross-sectional view of the connection frame, double-head motor, supply assembly and temperature control assembly structure of the present invention; Fig.17 It is a partial side cross-sectional view of the double-headed motor and supply assembly structure of the present invention; Fig.18 It is a rear exploded view of the temperature control component structure of the present invention.

[0021] Markings in the figure: 1. Stand; 2. Base frame; 3. Side frame; 4. Back frame; 5. Driving assembly; 51. Double-headed motor; 52. Driving bevel gear; 53. First driven bevel gear; 54. Rotating shaft; 55. First main bevel gear; 56. First secondary bevel gear; 6. Adjusting assembly; 61. First electric push rod; 62. Rotating rod; 63. Threaded rod; 64. Threaded sleeve; 65. Bracket; 66. Laser; 7. Transposition assembly; 71. Second electric push rod; 72. Second main bevel gear; 73. Second secondary bevel gear; 74. Driving circular gear; 75. Gear ring; 76. Driven circular gear; 8. Pulling assembly; 81. Third electric push rod; 82. Third main bevel gear; 83. Third secondary bevel gear; 84. Transfer circular gear; 85. Rack plate; 86. Connector; 9. Protective assembly; 91. Blocking skeleton; 92. Limit 93, limiting groove; 94, large telescopic cover; 95, connecting frame; 96, small telescopic cover; 10, supply component; 101, small hot and cold all-in-one machine; 102, conveying pipe; 103, sealing cover; 104, second driven bevel gear; 105, exhaust fan; 106, conveying head; 11, temperature control component; 111, pressurized pipe; 112, three-way pipe; 113, telescopic pipe; 114, conveying cover ; 115. Current equalizing plate; 116. Current equalizing net; 12. Through groove; 13. Annular slide groove; 14. Support slide; 15. Tightening rod; 16. Positioning head; 17. Rubidium atomic clock gas chamber; 18. T-shaped slide groove; 19. T-shaped slider; 20. Collimator; 21. Attenuator; 22. Beam expander; 23. Transmission mirror; 24. Condenser; 25. Photodiode matrix detector; 26. Optical signal collector. DETAILED DESCRIPTION

[0022] The present invention is specifically described below in conjunction with the accompanying drawings and specific embodiments: like Figure 1-Figure 18 As shown, an optical test device for vapor concentration in a gas chamber of a miniature rubidium atomic clock of the present invention comprises a stand 1, a bottom frame 2 is fixedly connected to one side of the bottom of the stand 1, and side frames 3 are fixedly connected to both sides of the top of the stand 1, and a back frame 4 is fixedly connected to the back of the stand 1; A driving component 5 and an adjusting component 6 for adjusting the spacing between light sources are respectively provided on the left side of the stand 1, and the driving component 5 includes a double-headed motor 51 fixed between the base frame 2 and the back frame 4, so as to realize an adaptive spacing adjustment effect on the light source. A transposition component 7 for converting the position of the micro-rubidium atomic clock gas chamber is provided at the center of the stand 1. According to actual test requirements, several groups of rubidium atomic clock gas chambers 17 are subjected to orderly transposition test operations, and a pulling component 8 and a protective component 9 for optical test protection are respectively provided on both sides of the stand 1. Electromagnetic signal, light and other protective operations are performed on the micro-rubidium atomic clock gas chamber in the test state on the stand 1 to prevent external factors from interfering with it, thereby improving the optical test accuracy of the steam concentration in the micro-rubidium atomic clock gas chamber.

[0023] like Figure 6-Figure 15 As shown, the driving assembly 5 also includes a driving bevel gear 52 fixed on an output shaft of the double-headed motor 51, and a first driven bevel gear 53 is meshed on one side of the driving bevel gear 52, and a unified driving source is provided by the double-headed motor 51, and the driving bevel gear 52 and the first driven bevel gear 53 are meshed and driven together, and the inner cavity of the first driven bevel gear 53 is fixedly connected to a rotating shaft 54 ​​that rotates with the gantry 1, and a first main bevel gear 55 is fixedly connected to the side of the rotating shaft 54 ​​away from the first driven bevel gear 53, and a first sub-bevel gear 56 is arranged on one side of the first main bevel gear 55, and the first main bevel gear 55 is driven by the rotating shaft 54 ​​to mesh and rotate with the first sub-bevel gear 56; The adjustment assembly 6 includes a first electric push rod 61 fixed on the other side of the first secondary bevel gear 56, and the first electric push rod 61 adjusts the meshing stroke of the first main bevel gear 55 with the first secondary bevel gear 56, and the outer side of the first electric push rod 61 is sleeved with a rotating rod 62 that rotates with the platform 1, and the side of the rotating rod 62 away from the first secondary bevel gear 56 is fixedly connected with a threaded rod 63 that rotates with the platform 1, and the threaded sleeve 64 is threadedly connected to the threaded rod 63, and the rotating rod 62 drives the threaded sleeve 64 through the threaded rod 63 to realize horizontal displacement adjustment; A bracket 65 is fixedly connected to the threaded sleeve 64, and a through groove 12 is provided on the left side of the top of the stand 1, which is slidably matched with the bracket 65, and serves as a sliding support for the bracket 65. A laser 66 is fixedly connected to the top of the bracket 65. The threaded sleeve 64 drives the laser 66 through the bracket 65 to achieve an adaptive spacing adjustment effect on the stand 1. The emitted light is straightened and enhanced by the collimator 20, the attenuator 21 and the beam expander 22, and then emitted to the rubidium atomic clock gas chamber 17, which is beneficial for the rubidium atomic clock gas chamber 17 to capture the strong light and improve the test accuracy of the steam concentration in the rubidium atomic clock gas chamber 17.

[0024] The shifting assembly 7 includes a second electric push rod 71 embedded in the rotating shaft 54 ​​away from the inner cavity of the first driven bevel gear 53, and the piston rod of the second electric push rod 71 is fixedly connected to the second main bevel gear 72, and one side of the second main bevel gear 72 is meshed with a second sub-bevel gear 73, and the meshing stroke between the second main bevel gear 72 and the second sub-bevel gear 73 is first adjusted by the second electric push rod 71; The inner cavity of the second secondary bevel gear 73 is fixedly connected to a driving circular gear 74 that rotates with the test stand 1 through a fixing rod, and the second secondary bevel gear 73 drives the two groups of driving circular gears 74 to rotate synchronously. A gear ring 75 is meshed on the top of the driving circular gear 74, and a driven circular gear 76 that rotates with the test stand 1 is meshed on the other side of the gear ring 75. The two groups of driving circular gears 74 drive the two groups of gear rings 75 to achieve a low-speed rotation effect. At the same time, the two groups of driven circular gears 76 play an auxiliary transmission support role for the two groups of gear rings 75 in the low-speed rotation state. A plurality of groups of tightening rods 15, tightening heads and positioning heads 16 pre-position the plurality of groups of rubidium atomic clock gas chambers 17. Then, the two groups of gear rings 75 in the low-speed rotation state perform orderly transposition test operations on the plurality of groups of rubidium atomic clock gas chambers 17 according to actual test requirements; An annular groove 13 is provided at the outer end of the inner cavity of the gear ring 75, and support slides 14 fixedly matched with the stand 1 are slidably connected on both sides of the bottom of the inner cavity of the annular groove 13 to improve the rotation stability of the gear ring 75 to prevent the gear ring 75 from tilting and shaking during rotation. A tightening rod 15 is threadedly connected to the inner cavity of the gear ring 75 all around, and a screwing head is fixedly connected to the outer side of the tightening rod 15. A positioning head 16 is provided on the inner side of the tightening rod 15, and a rubidium atomic clock gas chamber 17 is clamped on the inner side of the positioning head 16, which is convenient for equidistant positioning of several groups of rubidium atomic clock gas chambers 17.

[0025] The pulling assembly 8 includes a third electric push rod 81 embedded in the other output shaft of the double-headed motor 51, and the piston rod of the third electric push rod 81 is fixedly connected to the third main bevel gear 82, and one side of the third main bevel gear 82 is meshed with a third sub-bevel gear 83, and the meshing stroke between the third main bevel gear 82 and the third sub-bevel gear 83 is adjusted by the third electric push rod 81, and the inner cavity of the third sub-bevel gear 83 is fixedly connected to a transfer circular gear 84 through a fixed rod and rotates with the back frame 4, and the third sub-bevel gear 83 drives the transfer circular gear 84 to rotate, and the upper and lower sides of the transfer circular gear 84 are diagonally meshed with rack plates 85, and the opposite side of the rack plate 85 is fixedly connected with a connecting piece 86 that slides with the back frame 4, and the transfer circular gear 84 drives two diagonally distributed groups of rack plates 85 and connecting pieces 86 to perform telescopic movements; The protection component 9 includes a blocking frame 91 fixed on the front of the connecting member 86, and the two sets of blocking frames 91 are driven by the diagonally distributed two sets of rack plates 85 through the connecting member 86 to retract inward or expand outward, and the blocking frames 91 are fixedly connected to the limiting protrusions 92 on one side facing each other, and the blocking frames 91 are provided with limiting grooves 93 that are engaged with the limiting protrusions 92 on the other side facing each other, and the outer side of the blocking frames 91 is fixedly connected to a large telescopic cover 94, and the outer end of the large telescopic cover 94 is fixedly connected to a connecting frame 95, and the outer side of the connecting frame 95 is fixedly connected to a side frame The small telescopic cover 96 fixedly matched, the blocking frame 91, the large telescopic cover 94, the connecting frame 95 and the small telescopic cover 96 are all slidably matched with the stand 1, and the two sets of blocking frames 91 are contracted inwardly through the two sets of large telescopic covers 94, the connecting frame 95 and the small telescopic cover 96 to protect the stand 1, and expand outward to expose the stand 1, and release the protective measures to prevent external electromagnetic signals, light and other factors from interfering with the optical test of the steam concentration in the gas chambers 17 of the rubidium atomic clocks, so as to further improve the optical test accuracy of the steam concentration in the gas chambers 17 of the rubidium atomic clocks; T-shaped slide grooves 18 are provided on both sides of the inner cavity of the back frame 4, and T-shaped sliders 19 fixedly matched with the rack plate 85 are slidably connected on both sides of the inner cavity of the T-shaped slide groove 18, which play a role of sliding support for the rack plate 85. The left side of the top of the stand 1 is respectively fixedly connected with a collimator 20, an attenuator 21 and a beam expander 22 used in conjunction with the rubidium atomic clock gas chamber 17 to align and enhance the light emitted by the rubidium atomic clock gas chamber 17. The right side of the top of the stand 1 is respectively fixedly connected with the rubidium atomic clock gas chamber 17, the collimator 2 0, the attenuator 21 and the beam expander 22 are matched with the transmission mirror 23 and the condenser 24 for optical testing, and the photodiode matrix detector 25 and the optical signal collector 26 for collecting and receiving optical data. After the light penetrating the rubidium atomic clock gas chamber 17 is transmitted and focused, it is captured and collected by the photodiode matrix detector 25 and the optical signal collector 26, and the other side of the optical signal collector 26 is provided with a display that penetrates the side frame 3, and then the captured and collected optical data is displayed.

[0026] like Figure 16-Figure 18As shown, during the test of the vapor concentration in the gas chamber of the micro-rubidium atomic clock, due to the different operating environment temperatures of the micro-rubidium atomic clock, some are used in high temperature environments, while others are used in low temperature environments, and do not have the temperature control field simulation function, resulting in imperfect optical test conditions for the vapor concentration in the gas chamber of the micro-rubidium atomic clock, resulting in low optical test accuracy. Both sides of the back frame 4 are provided with a supply component 10 and a temperature control component 11 used in conjunction with the protection component 9, and the supply component 10 includes a small hot and cold all-in-one machine 101 fixed on the other side of the bottom of the stand 1, and the front side of the small hot and cold all-in-one machine 101 is unidirectionally connected to a conveying The conveying pipe 102 is connected to the sealing cover 103 fixedly matched with the bottom frame 2, and the small hot and cold integrated machine 101 provides a cold and hot source supply, and the cold and hot source is input into the sealing cover 103 by the conveying pipe 102. The other side of the driving bevel gear 52 is meshed with a second driven bevel gear 104, and the inner cavity of the second driven bevel gear 104 is fixedly connected with an exhaust fan 105 used in conjunction with the sealing cover 103 through a fan shaft. The rear side of the sealing cover 103 is connected to a conveying head 106, and then the exhaust fan 105 is driven by the driving bevel gear 52 through the second driven bevel gear 104 to rotate in the sealing cover 103; The temperature control assembly 11 includes a pressurized tube 111 connected to the conveying head 106, and the other end of the pressurized tube 111 is connected to a three-way tube 112, and both ends of the three-way tube 112 are connected to a telescopic tube 113, and the other end of the telescopic tube 113 is connected to a conveying cover 114 that is connected and matched with the connecting frame 95. A temperature sensor is embedded in the conveying cover 114 to monitor the heat source or cold source sent into the conveying cover 114 in real time. A flow equalizing plate 115 is embedded in one end of the conveying head 106 close to the sealing cover 103, and the conveying cover 114 is close to the end of the connecting frame 95. A flow equalizing net 116 is embedded, and the rotating exhaust fan 105 supplies the cold and hot sources into the sealing cover 103 through the conveying head 106, the pressurizing pipe 111, the three-way pipe 112 and the two telescopic tubes 113 into the two groups of conveying covers 114, and then reaches the sealing skeleton 91, the large telescopic cover 94, the connecting skeleton 95 and the small telescopic cover 96 in the sealed state after flow equalization treatment by the flow equalizing net 116, so as to simulate the high and low temperature control field environment for several groups of rubidium atomic clock gas chambers 17 in the optical testing state, so as to improve the optical testing accuracy of several groups of rubidium atomic clock gas chambers 17.

[0027] The working principle of an optical test device for steam concentration in a micro rubidium atomic clock gas chamber is as follows: first, a plurality of groups of rubidium atomic clock gas chambers 17 to be tested are placed inside a plurality of groups of positioning heads 16, and the tightening heads are respectively held tightly and the tightening rods 15 are rotated clockwise, and then the plurality of groups of rubidium atomic clock gas chambers 17 to be tested are positioned and clamped by moving the plurality of positioning heads 16 inward, and then the first electric push rod 61 is controlled to start and drive the first secondary bevel gear 56 to be clamped to the meshing portion of the first main bevel gear 55, and then the double-headed motor 51 is controlled to start and drive the first driven bevel gear 53 to rotate through the driving bevel gear 52, and the first driven bevel gear 53 is driven by the rotating shaft 54. The first main bevel gear 55 is driven to rotate accordingly, and the first main bevel gear 55 drives the rotating rod 62 to rotate through the first sub-bevel gear 56 that is meshed in place, and the rotating rod 62 drives the threaded rod 63 to rotate forward, and the threaded rod 63 drives the threaded sleeve 64 to move forward, and the threaded sleeve 64 drives the bracket 65 to slide forward in the through groove 12, and drives the laser 66 to move forward accordingly, and vice versa, drives the laser 66 to move backward, until the spacing of the laser 66 is adjusted to the optimal position, first control the double-headed motor 51 to pause, and then control the first electric push rod 61 to close and drive the first sub-bevel gear 56 to disengage from the meshing portion of the first main bevel gear 55 to the initial position; After the spacing of the laser 66 is adjusted to the best, the third electric push rod 81 is first controlled to open and drive the third main bevel gear 82 to be stuck to the meshing part of the third sub-bevel gear 83, and then the double-headed motor 51 is controlled to be turned on again and the third sub-bevel gear 83 is driven to rotate by the third main bevel gear 82 that is meshed in place, and the third sub-bevel gear 83 drives the transfer circular gear 84 to rotate positively, and the T-shaped slide groove 18 and the T-shaped slider 19 provide limit support for the diagonally distributed rack plates 85, so that the transfer circular gear 84 drives the two sets of diagonally distributed rack plates 85 to move inwardly, and the two sets of rack plates 85 drive the two sets of blocking skeletons 91 to be pulled inward synchronously through the two sets of connecting pieces 86. , the two groups of blocking skeletons 91 drive the two groups of large telescopic covers 94, the connecting skeletons 95 and the small telescopic covers 96 to be pulled inward in turn, and the other ends of the two groups of small telescopic covers 96 are fixed by the two groups of side frames 3, until the limiting protrusions 92 on the two groups of blocking skeletons 91 are stuck in the limiting grooves 93, and the two groups of blocking skeletons 91, the large telescopic covers 94, the connecting skeletons 95 and the small telescopic covers 96 are sealed in place, and the electromagnetic signal, light and other factors of the several groups of rubidium atomic clock gas chambers 17 on the stand 1 are prevented from being interfered with, first control the double-headed motor 51 to pause, and then control the third electric push rod 81 to close and drive the third main bevel gear 82 to disengage the meshing part of the third sub-bevel gear 83 to the initial position; Next, the test light is emitted by the laser 66 with the best spacing adjustment, and after being straightened and enhanced by the collimator 20, the attenuator 21 and the beam expander 22 in sequence, it is directed to the steam area of ​​the first group of rubidium atomic clock gas chambers 17 in the positioning state on the gear ring 75. Then, the light penetrating the steam area of ​​the first group of rubidium atomic clock gas chambers 17 is enhanced by the transmission mirror 23 and the condenser 24 in sequence and then transmitted to the photodiode matrix detector 25 area, and the photodiode matrix detector 25 transmits the light penetrating the first group of rubidium atomic clock gas chambers 17 to the photodiode matrix detector 25. After the light in the steam area of ​​the sub-clock air chamber 17 is captured, the optical signal collector 26 performs data conversion and displays it on the display. After the optical test of the steam concentration of the first group of rubidium atomic clock air chambers 17 is completed, the second electric push rod 71 is first controlled to start and drive the second main bevel gear 72 to the meshing part of the second sub-bevel gear 73, and then the double-headed motor 51 is controlled to start again and drive the first driven bevel gear 53 to rotate through the driving bevel gear 52. The first driven bevel gear 53 drives the second driven bevel gear 53 through the rotating shaft 54. The main bevel gear 72 rotates accordingly, and the second main bevel gear 72 drives the second sub-bevel gear 73 which is meshed in place to rotate accordingly, and the second sub-bevel gear 73 drives the two sets of driving circular gears 74 to rotate synchronously, and the annular slide groove 13 and the supporting slide 14 provide rotation support for the two sets of ring gears 75, and the two sets of driven circular gears 76 provide support and transmission for the two sets of ring gears 75. Then, the two sets of driving circular gears 74 drive the two sets of ring gears 75 to rotate synchronously clockwise until the two sets of ring gears 75 are driven to be in a positioning state. The steam area of ​​the second group of rubidium atomic clock gas chambers 17 reaches the test position. Similarly, the optical test operation is performed on the steam concentration of the second group of rubidium atomic clock gas chambers 17 after they are in place. Similarly, after the optical test of the steam concentration of the remaining rubidium atomic clock gas chambers 17 is completed, the double-headed motor 51 is first controlled to pause, and then the second electric push rod 71 is controlled to close and drive the second main bevel gear 72 to disengage from the meshing portion of the second sub-bevel gear 73 to the initial position, so that the optical test of the steam concentration of all rubidium atomic clock gas chambers 17 can be completed; During the optical test of the steam concentration of several groups of rubidium atomic clock gas chambers 17, the small integrated cold and hot machine 101 first provides heat source or cold source supply, and the heat source or cold source is unidirectionally transported to the sealed cover 103 by the delivery pipe 102. At this time, the double-headed motor 51 is controlled to start and drive the second driven bevel gear 104 to rotate through the driving bevel gear 52. The second driven bevel gear 104 drives the exhaust fan 105 to rotate in the sealed cover 103, and the heat source or cold source supplied to the sealed cover 103 passes through the flow equalizing plate 115 at the delivery head 106. After the flow equalization treatment, the flow is pressurized by the pressure pipe 111 and then supplied into the two groups of conveying covers 114 through the two telescopic tubes 113 on the three-way pipe 112. Then, the flow is equalized by the two groups of flow equalization nets 116 and reaches the two groups of sealing skeletons 91, the large telescopic cover 94, the connecting skeleton 95 and the small telescopic cover 96 in a sealed state. The high and low temperature control field environment is simulated for several groups of rubidium atomic clock gas chambers 17 in the optical testing state, so that the several groups of rubidium atomic clock gas chambers 17 can perform high-precision optical testing under high or low temperature control field conditions.

[0028] It should be noted that the specific models and specifications of the double-headed motor 51, the electric push rod and the small hot and cold integrated machine 101, as well as the attenuator 21, the photodiode matrix detector 25 and the optical signal collector 26 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in the field, so it will not be repeated in detail.

[0029] The power supply circuits of the double-headed motor 51, the electric push rod, the small integrated cooling and heating machine 101, the attenuator 21, the photodiode matrix detector 25 and the optical signal collector 26 are clear to those skilled in the art and will not be described in detail here.

[0030] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An optical test device for vapor concentration in a micro rubidium atomic clock gas chamber, comprising a stand (1), characterized in that: One side of the bottom of the stand (1) is fixedly connected to a bottom frame (2), and both sides of the top of the stand (1) are fixedly connected to side frames (3), and the back of the stand (1) is fixedly connected to a back frame (4); A driving component (5) and an adjusting component (6) for adjusting the distance between light sources are respectively arranged on the left side of the stand (1), and the driving component (5) comprises a double-headed motor (51) fixed between the bottom frame (2) and the back frame (4); A transposition component (7) for converting the position of the micro-rubidium atomic clock gas chamber is arranged at the center of the stand (1), and a pulling component (8) and a protection component (9) for optical test protection are respectively arranged on both sides of the stand (1).

2. The optical test device for vapor concentration in a gas chamber of a micro rubidium atomic clock according to claim 1, characterized in that: The driving assembly (5) further comprises a driving bevel gear (52) fixed on an output shaft of the double-headed motor (51), and a first driven bevel gear (53) is meshed with one side of the driving bevel gear (52), a rotating shaft (54) that is rotatably matched with the stand (1) is fixedly connected to the inner cavity of the first driven bevel gear (53), and a first main bevel gear (55) is fixedly connected to the side of the rotating shaft (54) away from the first driven bevel gear (53), and a first secondary bevel gear (56) is provided on one side of the first main bevel gear (55).

3. The optical test device for vapor concentration in a gas chamber of a micro rubidium atomic clock according to claim 2, characterized in that: The adjustment assembly (6) comprises a first electric push rod (61) fixed to the other side of the first secondary bevel gear (56), and the outer side of the first electric push rod (61) is sleeved with a rotating rod (62) that is rotatably matched with the platform (1), and the rotating rod (62) is fixedly connected to a threaded rod (63) that is rotatably matched with the platform (1) on the side away from the first secondary bevel gear (56), and the threaded rod (63) is threadedly connected to a threaded sleeve (64), and a bracket (65) is fixedly connected to the threaded sleeve (64), and the top of the bracket (65) is fixedly connected to a laser (66).

4. The optical test device for vapor concentration in a micro rubidium atomic clock gas chamber according to claim 3, characterized in that: The shifting assembly (7) comprises a second electric push rod (71) embedded in the rotating shaft (54) away from the inner cavity of the first driven bevel gear (53), and the piston rod of the second electric push rod (71) is fixedly connected to the second main bevel gear (72), one side of the second main bevel gear (72) is meshed with the second secondary bevel gear (73), and the inner cavity of the second secondary bevel gear (73) is fixedly connected to a driving circular gear (74) that rotates with the platform (1) through a fixing rod, the top of the driving circular gear (74) is meshed with a gear ring (75), and the other side of the gear ring (75) is meshed with a driven circular gear (76) that rotates with the platform (1).

5. The optical test device for vapor concentration in a gas chamber of a micro rubidium atomic clock according to claim 4, characterized in that: The pulling assembly (8) comprises a third electric push rod (81) embedded in another output shaft of the double-headed motor (51), and the piston rod of the third electric push rod (81) is fixedly connected to a third main bevel gear (82), one side of the third main bevel gear (82) is meshed with a third secondary bevel gear (83), and the inner cavity of the third secondary bevel gear (83) is fixedly connected to a transfer circular gear (84) through a fixing rod and is rotatably matched with the back frame (4), the upper and lower sides of the transfer circular gear (84) are diagonally meshed with rack plates (85), and the opposite side of the rack plate (85) is fixedly connected to a connecting piece (86) that is slidably matched with the back frame (4).

6. The optical test device for vapor concentration in a gas chamber of a micro-rubidium atomic clock according to claim 5, characterized in that: The protection component (9) comprises a blocking frame (91) fixed to the front side of the connecting member (86), and a limiting protrusion (92) is fixedly connected to one side of the blocking frame (91) facing the other side, and a limiting groove (93) is provided on the other side of the blocking frame (91) to be snap-fitted with the limiting protrusion (92), and a large telescopic cover (94) is fixedly connected to the outside of the blocking frame (91), and a connecting frame (95) is fixedly connected to the outer end of the large telescopic cover (94), and a small telescopic cover (96) fixedly matched with the side frame (3) is fixedly connected to the outside of the connecting frame (95), and the blocking frame (91), the large telescopic cover (94), the connecting frame (95) and the small telescopic cover (96) are all slidably matched with the stand (1).

7. The optical test device for vapor concentration in a gas chamber of a micro-rubidium atomic clock according to claim 6, characterized in that: A through groove (12) slidably matched with the bracket (65) is provided on the left side of the top of the stand (1), and an annular slide groove (13) is provided at the outer end of the inner cavity of the gear ring (75), and supporting slides (14) fixedly matched with the stand (1) are slidably connected to both sides of the bottom of the inner cavity of the annular slide groove (13).

8. The optical test device for vapor concentration in a gas chamber of a micro-rubidium atomic clock according to claim 7, characterized in that: The inner cavity of the gear ring (75) is threadedly connected to a tightening rod (15) on all sides, and a screwing head is fixedly connected to the outer side of the tightening rod (15). A positioning head (16) is provided on the inner side of the tightening rod (15), and a rubidium atomic clock gas chamber (17) is clamped on the inner side of the positioning head (16).

9. The optical test device for vapor concentration in a gas chamber of a micro-rubidium atomic clock according to claim 8, characterized in that: T-shaped slide grooves (18) are provided on both upper and lower sides of the inner cavity of the back frame (4), and both sides of the inner cavity of the T-shaped slide groove (18) are slidably connected to T-shaped sliders (19) fixedly matched with the rack plate (85), and the left side of the top of the stand (1) is respectively fixedly connected to a collimator (20), an attenuator (21) and a beam expander (22) used in conjunction with the rubidium atomic clock gas chamber (17).

10. The optical test device for vapor concentration in a gas chamber of a micro rubidium atomic clock according to claim 9, characterized in that: The right side of the top of the stand (1) is respectively fixedly connected with a transmission mirror (23) and a condenser (24) that cooperate with a rubidium atomic clock gas chamber (17), a collimator (20), an attenuator (21) and a beam expander (22) for optical testing, as well as a photodiode matrix detector (25) and an optical signal collector (26) for collecting and receiving optical data.

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