CN117111163B - Gravity measuring device - Google Patents
Gravity measuring device Download PDFInfo
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- CN117111163B CN117111163B CN202310988309.5A CN202310988309A CN117111163B CN 117111163 B CN117111163 B CN 117111163B CN 202310988309 A CN202310988309 A CN 202310988309A CN 117111163 B CN117111163 B CN 117111163B
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- 230000005484 gravity Effects 0.000 title claims abstract description 58
- 238000005259 measurement Methods 0.000 claims abstract description 41
- 230000003287 optical effect Effects 0.000 claims abstract description 38
- 230000005684 electric field Effects 0.000 claims abstract description 25
- 239000013307 optical fiber Substances 0.000 claims description 26
- 238000012360 testing method Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
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- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005339 levitation Methods 0.000 description 3
- 238000012576 optical tweezer Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 210000000085 cashmere Anatomy 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
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- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000013101 initial test Methods 0.000 description 1
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- 238000005305 interferometry Methods 0.000 description 1
- 238000004652 magnetic resonance force microscopy Methods 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical group N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V7/00—Measuring gravitational fields or waves; Gravimetric prospecting or detecting
- G01V7/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V7/00—Measuring gravitational fields or waves; Gravimetric prospecting or detecting
- G01V7/02—Details
- G01V7/04—Electric, photoelectric, or magnetic indicating or recording means
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The disclosure relates to a gravity measurement device, comprising a measurement chamber, an electrode assembly, a lens, a first light generating assembly and a second light generating assembly; the measuring chamber comprises a shell, wherein the shell is provided with a cavity; the electrode assembly is arranged on the shell, and an electric field is generated in the cavity after the electrode assembly is electrified; the lens is arranged on the shell; the first light generating component is used for generating a first laser beam, enabling the first laser beam to pass through the lens, and forming an optical trap area in the cavity, wherein the optical trap area is used for suspending and capturing an object to be detected; the second optical component is used for generating a second laser beam and transmitting the second laser beam into the cavity so as to detect the charge quantity of the object to be detected. Therefore, the gravity measuring device has simple space light path, small system volume and convenient movement.
Description
Technical Field
The disclosure relates to the technical field of precision measurement, in particular to a gravity measurement device.
Background
The measurement of extremely weak gravity promotes the application in the fields of magnetic resonance force microscopy, material wave interferometry, close-range gravitational physical test, surface force research including Cashmere effect, inertial sensing and the like.
In practical application, in order to achieve the high-sensitivity gravity measurement, the space optical path system adopted has the problems of large volume, complex optical path, inconvenient movement and the like, and the miniaturization, integration, engineering and application development of the system are restricted.
Disclosure of Invention
An object of the present disclosure is to provide a miniaturized and integrated gravity measurement device.
Embodiments of the present disclosure provide a gravity measurement device including a measurement chamber, an electrode assembly, a lens, a first light generating assembly, and a second light generating assembly; the measuring chamber comprises a shell, wherein the shell is provided with a cavity; the electrode assembly is arranged on the shell, and an electric field is generated in the cavity after the electrode assembly is electrified; the lens is arranged on the shell; the first light generating component is used for generating a first laser beam, enabling the first laser beam to pass through the lens, and forming an optical trap area in the cavity, wherein the optical trap area is used for suspending and capturing an object to be detected; the second optical component is used for generating a second laser beam and transmitting the second laser beam into the cavity so as to detect the charge quantity of the object to be detected.
In one embodiment, the gravity measurement device further comprises a mirror disposed within the chamber, and the first laser beam is reflected by the mirror to form the optical trap region.
In one embodiment, the housing includes a first end, a second end, and a sidewall connecting the first end and the second end, the first end and the second end being disposed opposite in a first direction; the lens comprises a first lens and a second lens, the first lens and the second lens are arranged on the side wall, and the height of the second lens in the first direction is higher than that of the first lens;
the reflecting mirror comprises a first reflecting mirror and a second reflecting mirror, and the first reflecting mirror and the second reflecting mirror are oppositely arranged in the first direction;
The first laser beam generated by the first light generating component passes through the first lens to the chamber, the first laser beam is reflected by the first reflecting mirror, the light trap area is formed between the first reflecting mirror and the second reflecting mirror, and the first laser beam passes through the second lens to the outside of the chamber after being reflected by the second reflecting mirror.
In one embodiment, the gravity measurement device further comprises a throwing component, at least part of which stretches into the cavity of the shell, and is used for throwing the object to be measured into the optical trap area.
In one embodiment, the throwing component comprises a throwing base and a throwing part, wherein the throwing base is arranged outside the measuring chamber, one end of the throwing part is connected with the throwing base, and the other end of the throwing part stretches into the cavity of the shell.
In one embodiment, the dispensing assembly further comprises a vibration part, wherein the vibration part is used for vibrating the dispensing part, and the vibration part is arranged on the dispensing base.
In one embodiment, the launch pad comprises:
a first moving part movable in a first direction; and/or
A second moving part movable in a second direction; and/or
A third moving part movable in a third direction; and/or
A first rotating part rotatable in a first direction; and/or
A second rotating part rotatable in a second direction; and/or
And a third rotating part rotatable in a third direction.
In one embodiment, the second optical component includes a first optical fiber connector, an optical fiber, and a first optical fiber base, the first optical fiber base is disposed outside the measuring chamber, the first optical fiber connector is disposed on the first optical fiber base, and the optical fiber is connected to the first optical fiber connector and extends into the cavity of the housing.
In one embodiment, the first light generating base comprises a base body and a bracket, the bracket is arranged on the base body, and the first optical fiber connector is arranged on the bracket; the extending direction of the bracket intersects with the extending direction of the housing.
In one embodiment, the base body includes:
a fourth moving part movable in the first direction; and/or
A fifth moving part movable in a second direction; and/or
A sixth moving part movable in a third direction; and/or
A fourth rotating part rotatable in the first direction; and/or
A fifth rotating part rotatable in a second direction; and/or
And a sixth rotating part rotatable in a third direction.
In one embodiment, the gravity measuring device further comprises a discharge part for ionizing air and changing the electric quantity of the object to be measured.
In one embodiment, the housing includes a first end, a second end, and a sidewall connecting the first end and the second end, the first end and the second end being disposed opposite in a first direction; the electrode assembly comprises a first electrode and a second electrode, the first electrode is arranged at the first end, the second electrode is arranged at the second end, and an electric field is generated in the cavity after the first electrode and the second electrode are electrified.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:
The gravity measuring device provided by the disclosure is characterized in that the lens is integrally arranged in the measuring chamber, and the space light path is simple, the system is small in size and convenient to move. And the electrode assembly is also arranged in the measuring chamber, so that the capturing and the gravity measurement of the object to be measured can be completed in the measuring chamber, and the operation is very convenient.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the exemplary embodiments of the disclosure and their description are given by way of illustration and not of limitation.
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 shows a cross-sectional view of a gravity measurement device in an embodiment along the horizontal direction.
Fig. 2 shows a cross-sectional view of the gravity measuring device in an embodiment in a vertical direction.
Fig. 3 shows a front view of a gravity measurement device in an embodiment.
Detailed Description
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the drawings and specific language will be used to describe the same. It should be understood that the detailed description is presented herein only to illustrate the present disclosure and not to limit the scope of the disclosure.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.
The gravity measuring device of the present disclosure will be described in detail with reference to the accompanying drawings. The features of the examples and embodiments described below may be combined with each other without conflict.
In one embodiment of the present disclosure, as shown with reference to fig. 1 and 2, a gravity measurement device 1 is provided that includes a measurement chamber 11, an electrode assembly 12, a lens 13, a first light generating assembly 14, and a second light generating assembly 15. The measuring chamber 11 comprises a housing 111, the housing 111 being provided with a chamber 112. The electrode assembly 12 is disposed in the housing 111, and when the electrode assembly 12 is energized, an electric field is generated in the chamber 112. The lens 13 is provided in the housing 111. The first light generating component 14 is configured to generate a first laser beam, and make the first laser beam pass through the lens 13, and form a light trap region 14a in the chamber 112 for suspending and capturing the object to be measured. The second optical component 15 is configured to generate a second laser beam, and transmit the second laser beam into the chamber 112 to detect the charge of the object.
When the object to be measured enters the optical trap area 14a, the object to be measured is captured by the first laser beam, and at the moment, the object to be measured generates a suspension effect under the action of suspension force and gravity given by the first laser beam, so that positioning is realized. Then, the first laser intensity is reduced to reduce the levitation force, and the electrode assembly 12 is energized to generate an electric field in the chamber 112, and the object to be measured is subjected to the electric field force in the electric field, and at this time, the object to be measured is balanced under the actions of the levitation force, the electric field force and the gravity. Then, the levitation force is slowly reduced, and the electric field force is slowly increased until the first light generating component 14 is closed, at this time, the object to be measured is balanced under the action of the electric field force and the gravity, and the gravity of the object to be measured can be known by obtaining the electric field force received by the object to be measured. The second optical component 15 detects the charge amount of the object to be measured, the electric field strength of the electrode component 12 is known, and the electric field strength is calculated according to the charge amount and the electric field strength.
The gravity measuring device 1 provided by the disclosure is characterized in that the lens 13 is integrally arranged in the measuring chamber 11, and the space light path is simple, the system is small in volume and convenient to move. And the electrode assembly 12 is also arranged in the measuring chamber 11, so that the capturing and the gravimetric measurement of the object to be measured can be completed in the measuring chamber 11, and the operation is very convenient.
In this embodiment, the gravity measuring device 1 is kept in a vacuum environment at least in the working process of the first light generating component 14, so that the first laser beam generated by the first light generating component 14 can achieve the technical effect of the vacuum optical tweezers. In the vacuum optical tweezers technique, momentum exchange between light and micro-nano particles is utilized to enable micro-nano particles to be stably confined and manipulated in an optical trap, i.e., the optical trap region 14a described above. The scattering force and the gradient force can be classified according to the stress of the micro-nano particles in the optical trap. Wherein, the scattering force is along the light propagation direction, and the gradient force points to the light potential energy reduction direction. Irrespective of the action of gravity, when the resultant force of the scattering force and the gradient force applied to the particles at a certain position is zero, the particles are trapped at the stress balance position, namely the center of the optical trap. The basic principle of measurement of very weak forces is mainly limited by thermal Langevin forces according to the wave-dissipation theorem, the power spectral density (power SPECTRAL DENSITY, PSD) is denoted S F＝4kBT0mΩ0/Q, where k B is boltzmann constant, T 0 is ambient temperature, m is mass of micro-nano particles, Ω 0 is oscillation frequency, Q is quality factor, then the very weak forces measurable at temperature T 0 areWhere Γ 0 is the damping rate and b is the measurement bandwidth.
In some embodiments, the gravity of the test object is a picocell-grade micro force. In this example, the test object is a silicon nitride microsphere with a diameter of 5. Mu.m. The gravity measurement device 1 provided by the present disclosure can realize measurement of extremely weak gravity with high accuracy by adopting a vacuum optical tweezers technology.
In some embodiments, referring to fig. 2, the housing 111 includes a first end 1111, a second end 1112, and a sidewall 1113 connecting the first end 1111 and the second end 1112, the first end 1111 and the second end 1112 being disposed opposite in a first direction z. The electrode assembly 12 includes a first electrode 121 and a second electrode 122, the first electrode 121 is disposed at a first end 1111, the second electrode 122 is disposed at a second end 1112, and an electric field is generated in the chamber 112 after the first electrode 121 and the second electrode 122 are energized. The first direction z is the same as the gravity direction, so that the electric field force applied by the object to be measured in the electric field can be opposite to the gravity direction.
In some embodiments, the housing 111 is a ceramic material.
In some embodiments, the first electrode 121 and the second electrode 122 are disposed on the inner wall of the housing 111 by electroplating or embedded in the housing 111 to reduce the volume of the gravity measuring device 1. In this embodiment, the first electrode 121 and the second electrode 122 are coated on the inner wall of the casing 111, and are welded with the casing 111 made of ceramic material by adopting a brazing technique after coating, so as to form high insulation strength.
In some embodiments, with continued reference to FIG. 2, the gravity measurement device 1 further includes a mirror 16 disposed within the chamber 112, the first laser beam being reflected by the mirror 16 to form the optical trap region 14a. By providing the mirror 16 for changing the direction of transmission of the first laser beam, the position of the first light generating assembly 14 can be set according to the actual requirements in order to design the volume of the gravity measuring device 1 as small as possible.
Specifically, in some embodiments, the lens 13 includes a first lens 131 and a second lens 132, the first lens 131 and the second lens 132 are disposed on the sidewall 1113, and the second lens 132 has a height in the first direction z higher than the first lens 131. The mirror 16 includes a first mirror 161 and a second mirror 162, and the first mirror 161 and the second mirror 162 are disposed opposite to each other in the first direction z. The first laser beam generated by the first light generating component 14 passes through the first lens 131 to the chamber 112, and after being reflected by the first reflecting mirror 161, forms a light trap area 14a between the first reflecting mirror 161 and the second reflecting mirror 162, and after being reflected by the second reflecting mirror 162, passes through the second lens 132 to the outside of the chamber 112.
The first lens 131 is used to introduce the first laser beam generated by the first light generating component 14 into the chamber 112 and focus the first laser beam to form the optical trap region 14a. The second lens 132 is used to guide the first laser beam out of the chamber 112, so as to avoid that the first laser beam is transmitted in the chamber 112 to affect the measurement of the gravity of the object to be measured. The second lens 132 is disposed higher than the first lens 131 in the first direction z, so that the suspension force applied to the object to be measured can be opposite to the direction of gravity.
The first laser beam is transmitted along the optical path of the first lens 131-first mirror 161-second mirror 162-second lens 132. In this embodiment, the first parallel laser beam generated by the first light generating component 14 is transmitted to the first lens 131 along a nearly horizontal direction, focused by the first lens 131, transmitted to the first mirror 161, reflected by the first mirror 161, and the transmission direction is changed to be nearly in the first direction z, and then focused at the focal point. The focused light is further transmitted to the second reflector 162, reflected by the second reflector 162, and the transmission direction is changed to be approximately horizontal, and finally transmitted to the second lens 132, and the focused light is restored to be parallel light beams after being transmitted to the output cavity 112 through the second lens 132.
In the present embodiment, the focal lengths of the first lens 131 and the second lens 132 are equal.
Specifically, in the present embodiment, the case 111 is provided with an opening corresponding to the first lens 131 and the second lens 132, and the first lens 131 and the second lens 132 may be adhered to the inner wall of the opening. The specific arrangement of the first lens 131 and the second lens 132 is not limited in this disclosure.
The first mirror 161 and the second mirror 162 are disposed at an angle inclined with respect to the first direction z, for example, 30 °, 45 °, 60 °, or the like. In the present embodiment, the first mirror 161 is inclined by 45 ° with respect to the first direction z to reflect the first laser beam approaching the horizontal direction to be transmitted approaching the vertical direction, and the second lens is inclined by 45 ° with respect to the first direction z to reflect the first laser beam approaching the vertical direction to be transmitted approaching the horizontal direction.
In some embodiments, the first mirror 161 and the second mirror 162 are connected to the inner wall of the housing 111 by a support bracket to achieve fixation. In other embodiments, the inner wall of the housing 111 is provided with a bevel, and the first mirror 161 and the second mirror 162 are electroplated on the bevel. The specific arrangement of the first mirror 161 and the second mirror 162 is not limited in this disclosure.
In the present embodiment, the first mirror 161 and the second mirror 162 are formed by physical vapor deposition, and a reflective layer is coated on the inner wall surface of the housing 111, and then a protective layer is coated on the reflective layer by chemical vapor deposition technology, so as to improve the high transparency and durability of the first mirror 161 and the second mirror 162.
In the present embodiment, the first laser beam wavelength is 1064nm, the optical power is 1W, the focal lengths of the first lens 131 and the second lens 132 are 35mm, and the pitch of the first electrode 121 and the second electrode 122 is 21mm.
In some embodiments, referring to fig. 2 and 3, the gravity measurement device 1 further comprises a dispensing assembly 17, at least part of the dispensing assembly 17 extending into the chamber 112 of the housing 111 for dispensing the object to be measured into the optical trap area 14a. In this way, the throwing component 17 is conveniently operated outside the measuring chamber 11 to throw the object to be measured.
Further, in some embodiments, with continued reference to fig. 2 and 3, the dispensing assembly 17 includes a dispensing base 171 and a dispensing portion 172, the dispensing base 171 being disposed outside the measuring chamber 11, one end of the dispensing portion 172 being connected to the dispensing base, and the other end extending into the chamber 112 of the housing 111. One end of the throwing portion 172 extending into the chamber 112 is used for placing an object to be tested for throwing, and the throwing base 171 is used for supporting the throwing portion 172. In the present embodiment, the dispensing portion 172 employs a pulling tab.
Still further, in some embodiments, with continued reference to fig. 2 and 3, the launch assembly 17 further includes a vibration portion 173 for vibrating the launch portion 172, the vibration portion 173 being provided to the launch base 171. Thus, when the vibration portion 173 drives the placement portion 172 to vibrate, the object placed on the placement portion 172 falls into the optical trap region 14a to be captured. In the present embodiment, the vibration portion 173 employs a piezoelectric element. The vibration frequency of the vibration portion 173 can be adjusted by adjusting the frequency of the input electric signal.
In the present embodiment, an end of the delivery portion 172 extending into the chamber 112 is disposed directly above the optical trap region 14 a. In some embodiments, the distance between the end of the dispensing portion 172 protruding into the chamber 112 and the optical trap region 14a in the first direction z is less than or equal to one tenth of the focal length of the lens 13, so as to improve the accuracy of dispensing the object to be measured.
In some embodiments, the launch base 171 shown with reference to fig. 3 includes a first moving portion 1711 movable in a first direction z. In some embodiments, launch base 171 includes a second movable portion 1712 movable in a second direction x. In some embodiments, launch base 171 includes a third movable portion 1713 movable in a third direction y. In some embodiments, launch base 171 includes a first rotating portion 1714 rotatable in a first direction z. In some embodiments, launch base 171 includes a second rotating portion 1715 rotatable in a second direction x. In some embodiments, launch base 171 includes a third rotating portion 1716 rotatable in a third direction y. In this way, the delivery base 171 can realize displacement and rotation in the first direction z, the second direction x and the third direction y, so as to realize position regulation and control of the delivery portion 172, so that the delivery portion 172 is close to the optical trap area 14a, the delivery of the object to be tested can be facilitated, and the delivery portion 172 can be moved out of the cavity 112, so that the object to be tested can be placed at one end of the delivery portion 172 far away from the delivery base 171. In this embodiment, the second direction x and the third direction y are in a horizontal plane and are perpendicular to each other.
In the embodiment shown in fig. 3, the first moving portion 1711, the second moving portion 1712, the third moving portion 1713, the first rotating portion 1714, the second rotating portion 1715, and the third rotating portion 1716 are stacked in this order along the first direction z. The vibration portion 173 is sandwiched between the second rotation portion 1715 and the third rotation portion 1716.
In some embodiments, the housing 111 is provided with an opening having an area margin corresponding to the putting portion 172, facilitating vibration and position adjustment of the putting portion 172.
In some embodiments, referring to fig. 1 and 3, the second optical component 15 includes a first optical fiber connector 151, an optical fiber 152, and a first optical fiber base 153, where the first optical fiber base 153 is disposed outside the measurement chamber 11, and the first optical fiber connector 151 is disposed on the first optical fiber base 153, and the optical fiber 152 is connected to the first optical fiber connector 151 and extends into the cavity 112 of the housing 111. The first optical fiber connection 151 is used to connect a laser generating device and the optical fiber 152 is used to transmit the second laser beam into the chamber 112.
Further, in some embodiments, the first light generating base 153 includes a base body 1531 and a support 1532, the support 1532 is provided on the base body 1531, and the first optical fiber connector 151 is provided on the support 1532. The extending direction of the support 1532 intersects with the extending direction of the case 111. I.e., the shelf 1532 has an angle with the first direction z. In this way, the second laser beam is conveniently transmitted to the optical trap region 14a, so as to accurately detect the charge amount of the object to be detected.
In some embodiments, the base body 1531 includes a fourth moving portion 15311 movable in the first direction z. In some embodiments, the base body 1531 includes a fifth moving part 15312 movable in the second direction x. In some embodiments, the base body 1531 includes a sixth moving part 15313 movable in the third direction y. In some embodiments, the base body 1531 includes a fourth rotation portion 15314 rotatable in the first direction z. In some embodiments, the base body 1531 includes a fifth rotation portion 15315 rotatable in the second direction x. In some embodiments, the base body 1531 includes a sixth rotation portion 15316 rotatable in the third direction y. In this way, the first photo-base 153 can realize displacement and rotation in the first direction z, the second direction x and the third direction y, and realize position adjustment of the first optical fiber connector 151 and the optical fiber 152, so as to transmit the second laser beam to the optical trap region 14a.
In the embodiment shown in fig. 3, the fourth moving portion 15311, the fifth moving portion 15312, the sixth moving portion 15313, the fourth rotating portion 15314, the fifth rotating portion 15315, and the sixth rotating portion 15316 are stacked in this order along the first direction z.
In some embodiments, the housing 111 is provided with an opening having an area margin corresponding to the optical fiber 152 to facilitate positional adjustment of the optical fiber 152.
In some embodiments, the gravity measurement device 1 further comprises a base 18. The measuring device 1, the first light generating component 14, the second light generating component 15 and the delivering component 17 can be disposed on the base 18, so as to facilitate the overall movement of the gravity measuring device 1.
As shown in fig. 2, the first light generating assembly 14 also includes a second fiber optic connector 141 and a second light generating base 142.
In some embodiments, referring to fig. 3, the gravity measuring device 1 further includes a discharging part 19 for ionizing air and changing the amount of electricity of the object to be measured. The initial test object may be uncharged, and the discharge unit 19 charges the test object, so that the test object can receive an electric field force in an electric field. The discharge portion 19 may employ a discharge electrode. The discharge portion 19 may be disposed in any one of the measuring device 1, the first light generating component 14, the second light generating component 15, the delivery component 17, and the base 18, in this embodiment, the discharge portion 19 is disposed in the delivery base 171, and the delivery portion 172 is disposed at intervals in a horizontal plane, so that the discharge portion 19 is close to an opening disposed on the housing 111 corresponding to the delivery portion 172, thereby generating a better ionization effect on the gas in the chamber 112.
In actual gravity measurement, the gravity measuring device 1 is used to realize measurement of an object to be measured by the following method:
The first light generating element 14 is turned on to generate a first laser beam to form the optical well region 14a.
A plurality of objects to be measured are placed on the end of the putting portion 172 away from the putting base 171, and the putting portion 172 is made to extend into the chamber 112 and move to above the optical trap area 14a by adjusting the first moving portion 1711, the second moving portion 1712, the third moving portion 1713, the first rotating portion 1714, the second rotating portion 1715, and the third rotating portion 1716.
The vibration part 173 drives the throwing part 172 to vibrate, so that a plurality of objects to be tested on the throwing part 172 are released, and one object to be tested falls into the optical trap area 14a to be captured.
The first electrode 121 and the second electrode 122 are energized.
A high voltage is applied to the discharge portion 19 to break down air and ionize the air, thereby charging the object to be measured.
The electric field intensity between the first electrode 121 and the second electrode 122 is slowly increased, and the intensity of the first laser beam is slowly weakened until the first light generating component 14 is turned off, so that the particles of the object to be detected reach balance under the action of gravity and electric field force.
The second optical component 15 is turned on to generate a second laser beam for detecting the charge amount of the object to be detected.
And calculating the gravity according to the charge quantity and the electric field intensity.
In the description of the present disclosure, it should be understood that the terms "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present disclosure.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first," "second," etc. can include at least one such feature, either explicitly or implicitly. In the description of the present disclosure, the meaning of "a plurality" is at least two, such as two, three, etc., unless explicitly specified otherwise.
In the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.
In this disclosure, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "mounted," "positioned," "secured" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered as being "fixedly connected" to another element, the two elements may be fixed by a detachable connection manner, or may be fixed by a non-detachable connection manner, such as sleeving, clamping, integrally forming, or welding, which may be implemented in the conventional technology, which is not further described herein.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples merely represent several embodiments of the present disclosure, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that variations and modifications can be made by those skilled in the art without departing from the inventive concepts of the present disclosure, which are within the scope of the present disclosure.
Claims (12)
1. A gravity measuring device for measuring gravity of an object to be measured, comprising:
the measuring chamber comprises a shell, wherein the shell is provided with a cavity;
The electrode assembly is arranged on the shell and generates an electric field in the cavity after being electrified;
A lens provided in the housing;
The first light generating assembly is used for generating a first laser beam, enabling the first laser beam to pass through the lens, and forming an optical trap area in the cavity, wherein the optical trap area is used for suspending and capturing an object to be detected; and
The second light component is used for generating a second laser beam and transmitting the second laser beam into the cavity so as to detect the charge quantity of the object to be detected; and the gravity of the object to be detected is calculated according to the charge quantity and the electric field intensity of the electrode assembly.
2. The gravity measurement device of claim 1, further comprising a mirror disposed within the chamber, wherein the first laser beam is reflected by the mirror to form the optical trap region.
3. The gravity measurement device of claim 2, wherein the housing includes a first end, a second end, and a sidewall connecting the first end and the second end, the first end and the second end being disposed opposite in a first direction; the lens comprises a first lens and a second lens, the first lens and the second lens are arranged on the side wall, and the height of the second lens in the first direction is higher than that of the first lens;
the reflecting mirror comprises a first reflecting mirror and a second reflecting mirror, and the first reflecting mirror and the second reflecting mirror are oppositely arranged in the first direction;
The first laser beam generated by the first light generating component passes through the first lens to the chamber, the first laser beam is reflected by the first reflecting mirror, the light trap area is formed between the first reflecting mirror and the second reflecting mirror, and the first laser beam passes through the second lens to the outside of the chamber after being reflected by the second reflecting mirror.
4. The gravity measurement device of claim 1, further comprising a launch assembly, at least a portion of which extends into the chamber of the housing for launching the test object into the optical trap area.
5. The gravity measurement device of claim 4, wherein the dispensing assembly comprises a dispensing base and a dispensing portion, the dispensing base is disposed outside the measurement chamber, one end of the dispensing portion is connected to the dispensing base, and the other end of the dispensing portion extends into the chamber of the housing.
6. The gravity measurement device of claim 5, wherein the launch assembly further comprises a vibrating portion for vibrating the launch portion, the vibrating portion being provided to the launch base.
7. The gravity measurement device of claim 5, wherein the launch base comprises:
a first moving part movable in a first direction; and/or
A second moving part movable in a second direction; and/or
A third moving part movable in a third direction; and/or
A first rotating part rotatable in a first direction; and/or
A second rotating part rotatable in a second direction; and/or
And a third rotating part rotatable in a third direction.
8. The gravity measurement device of claim 1, wherein the second light generating assembly comprises a first fiber optic connector, an optical fiber, and a first light generating base, the first light generating base being located outside the measurement chamber, the first fiber optic connector being located at the first light generating base, the optical fiber being connected to the first fiber optic connector and extending into the chamber of the housing.
9. The gravity measurement device of claim 8, wherein the first light generating base comprises a base body and a bracket, the bracket being provided to the base body, the first fiber optic connector being provided to the bracket; the extending direction of the bracket intersects with the extending direction of the housing.
10. The gravity measurement device of claim 9, wherein the base body comprises:
a fourth moving part movable in the first direction; and/or
A fifth moving part movable in a second direction; and/or
A sixth moving part movable in a third direction; and/or
A fourth rotating part rotatable in the first direction; and/or
A fifth rotating part rotatable in a second direction; and/or
And a sixth rotating part rotatable in a third direction.
11. A gravity measurement device as claimed in any one of claims 1 to 10 further comprising a discharge for ionising air to change the electrical quantity of the object to be measured.
12. The gravity measurement device of any one of claims 1 to 10 wherein the housing includes a first end, a second end and a side wall connecting the first end and the second end, the first end and the second end being oppositely disposed in a first direction; the electrode assembly comprises a first electrode and a second electrode, the first electrode is arranged at the first end, the second electrode is arranged at the second end, and an electric field is generated in the cavity after the first electrode and the second electrode are electrified.
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| CN202310988309.5A CN117111163B (en) | 2023-08-07 | 2023-08-07 | Gravity measuring device |
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| CN202310988309.5A CN117111163B (en) | 2023-08-07 | 2023-08-07 | Gravity measuring device |
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