CN111212347B - Intelligence microphone mount - Google Patents
Intelligence microphone mount Download PDFInfo
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- CN111212347B CN111212347B CN202010325084.1A CN202010325084A CN111212347B CN 111212347 B CN111212347 B CN 111212347B CN 202010325084 A CN202010325084 A CN 202010325084A CN 111212347 B CN111212347 B CN 111212347B
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- wheat
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- driving mechanism
- height
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
Abstract
An intelligent microphone fixing frame comprises a telescopic support (10) and an electric microphone clamp (30), wherein the telescopic support (10) comprises a support sleeve (11) and a telescopic rod (12) which are in guiding sliding fit, and the telescopic support is coupled with a lifting driving mechanism (20) and used for automatically adjusting the height of the telescopic rod through the lifting driving mechanism (20) according to the height of a mouth of a speaker; electronic microphone clamp (30) spiral installation is in telescopic bracket (10) top, and electronic microphone clamp (30) include microphone clamp shell (31) and every single move portion (32), and microphone clamp actuating mechanism (40) coupling connection microphone clamp shell (31) and every single move portion (32) simultaneously for the gesture through microphone clamp actuating mechanism (40) automatically regulated microphone according to the coordinate position of speaker's mouth. The intelligent microphone fixing frame is accurate in height and posture and low in noise.
Description
Technical Field
The invention relates to the technical field of microphones, in particular to an intelligent microphone fixing frame.
Background
A microphone is used as a sound amplification apparatus for a person to make a sound, and is an acoustic apparatus for converting a sound signal into an electric signal. The sensitivity of a microphone to sound from different directions may differ, referred to as the directivity of the microphone. The optimal position of the speaker to the microphone is 15-40cm, if the distance is too close, the bass part of the speaker can be distorted due to too large volume, the principle is that the sound pressure of the sound source is too strong and can be distorted when the sound pressure exceeds 0.5% because of being too close; if the distance is too far away, the microphone can record other sounds in the space at the same time, so that the speech definition is influenced; the angle of the microphone should also be directed towards the speaker's mouth, preferably a straight line. The height of the microphone is adapted to the height of the speaker, the microphone boom needs to be raised for the taller speaker, and the microphone boom needs to be lowered for the next speaker with the shorter speaker. In short, the reasonable use of the microphone requires adjustment of the distance, angle and height of the microphone.
The microphone stands in the prior art are all adjusted in advance, can only approximately adapt to general heights and angles, and need to be adjusted temporarily when needed, which is very inconvenient. For example, a microphone fixing seat frame (CN 107040833A,2017, 8.11.2017) of xiamen lingrui smart technology ltd is clamped in the clamping grooves of the first clamping piece 4 and the second clamping piece 5 of the opposite clamp through a clamping ring 91 to satisfy the fixing and rotating functions, and an elastic brake pad is arranged on the outer surface of the clamping ring 91 to enable the microphone fixing seat frame to have a damping effect during rotation. The microphone with the snap ring can be conveniently taken out from the V-shaped clamping groove, and the microphone is very convenient to take out. However, it still cannot be adjusted manually, and cannot be adjusted reasonably according to changing requirements.
Therefore, finding a control technology for automatically adjusting the height, centering the mouth and adjusting the pitch angle according to the height of the speaker becomes a bottleneck in the technical development of the microphone fixing frame industry.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an intelligent microphone fixing frame which solves the problems of automatic height adjustment, automatic centering of a human mouth and automatic pitching angle adjustment according to the height of a speaker.
The object of the invention is achieved by an intelligent microphone holder, which comprises
The telescopic support comprises a support sleeve and a telescopic rod which are in guiding sliding fit, and the telescopic support is coupled with the lifting driving mechanism and used for automatically adjusting the height of the telescopic rod through the lifting driving mechanism according to the height of the mouth of the speaker;
the electric microphone clamp is rotatably installed at the top of the telescopic support and comprises a microphone clamp shell and a pitching part, and the microphone clamp driving mechanism is simultaneously coupled with the microphone clamp shell and the pitching part and used for automatically adjusting the posture of the microphone through the microphone clamp driving mechanism according to the coordinate position of the mouth of a speaker.
Furthermore, the lifting driving mechanism comprises a lifting gear and a rack, the telescopic rod is rotatably provided with a lifting rotating shaft, the lifting rotating shaft is fixedly provided with at least one lifting gear, the rack is fixed by the support sleeve, and the lifting gear is meshed with the rack.
Further, the wheat clamp shell comprises a wheat clamp body with a central rotating shaft, the wheat clamp body is coaxially provided with a Z-direction pipe joint, a Z-direction pivot part and a pitching pivot part, the rotating shaft of the pitching pivot part is perpendicular to the Z axis, the Z-direction pipe joint is rotatably connected with the telescopic rod, and the pitching part is rotatably arranged in the pitching pivot part.
Furthermore, every single move portion includes every single move pivot and every single move shell, every single move shell fixed connection every single move pivot, every single move shell body coupling microphone clamp, the microphone centre gripping is in the microphone clamp.
Further, the wheat clamp driving mechanism comprises a sun gear, a gear ring and at least 3 planetary gears, the planetary gears are meshed between the sun gear and the gear ring, the planetary gears are fixedly connected with a planet carrier, and inner holes of the wheat clamp body are integrally connected with the gear ring.
Further, sun gear fixed connection drive shaft, the drive shaft is worn to establish in the telescopic link, and drive shaft other end fixed connection adjusting motor, support sleeve bottom are fixed in the support base, and adjusting motor is fixed in the support base.
Furthermore, the planet carrier is connected with the planet rotating shaft in an integrated mode, the planet rotating shaft extends into the pitching shell, the end portion of the planet rotating shaft is fixedly provided with a first bevel gear, the pitching rotating shaft is fixedly provided with a second bevel gear, and the first bevel gear is meshed with the second bevel gear.
Further, the top of the telescopic rod is provided with a first rotation stopping part for stopping the wheat clamp body, so that the wheat clamp driving mechanism can actuate the pitching part; the wheat clamp body is provided with a second rotation stop for stopping the pitching part, so that the wheat clamp driving mechanism can actuate the wheat clamp body.
Furthermore, the first rotation stopping structure and the second rotation stopping structure comprise rotation stopping block pairs, one ends of the rotation stopping block pairs are fixed in a pivoting mode, the other ends of the rotation stopping block pairs are connected with electromagnet pairs, and the electromagnet pairs are arranged in the sliding grooves in a sliding mode.
An automatic adjusting method of an intelligent microphone fixing frame comprises the following steps,
1) initializing, starting up the lifting drive mechanism and the wheat clamp drive mechanism, and adjusting the wheat height to an initial height H0Ergot as initial angle gamma0；
2) Acquiring the mouth height of a speaker, periodically acquiring camera face data, acquiring human body photographing data and acquiring the mouth height H1；
3) Height adjustment of telescopic rod
|ΔH|=|H1-H0I, determine | Δ H shading<5mm, if yes, executing the next step; otherwise, the following adjustments are performed:
the determination is that deltah is <0,
if yes, the lifting motor 24 is started to reduce the height | Δ H |;
if not, the lifting motor 24 is started to raise the height | delta H |;
4) adjusting horizontal turning angle
Shoot through the surveillance camera head, grab through the camera and shoot the head image, combine human height, obtain the three-dimensional coordinate position of people's mouth position, M: x1，Y1，Z1And microphone particle B: x0，Y0，Z0By comparison, the process of the first and second steps,
determine | X1-X0|>5mm, if not, executing the next step; if yes, the following adjustments are performed:
① calculate the horizontal turn angle β,
；
②ΔX=X1-X0judgment of Δ X>0，
If yes, clockwise rotating by a horizontal rotation angle beta;
if not, rotating the horizontal rotation angle beta anticlockwise;
5) adjusting pitch angle
① calculating the pitch angle gamma and the relative angle
；
②ΔZ=z1-z0Judgment of Δ Z>0，
Is, then
Starting the adjusting motor 47 to enable the wheat clamp to rotate upwards by an angle of gamma;
otherwise, then
The adjustment motor 47 is started to rotate the wheat clamp downwards by an angle gamma.
The cooperative matching of the microphone clamp driving mechanism 40, the microphone clamp shell 31 and the pitching part 32 and the penetration of the driving shaft in the telescopic rod enable the adjusting motor to be far away from the microphone and simultaneously not to influence the telescopic driving mechanism 20, so that the height of the intelligent microphone fixing frame can be automatically adjusted according to the height, the posture of the microphone can be adjusted according to the relative position of the human mouth and the microphone, and the intelligent microphone fixing frame is accurate in height posture, low in noise, convenient and practical.
Drawings
Fig. 1 is a front sectional view of an intelligent microphone holder according to a first embodiment of the present invention;
fig. 2 is a front sectional view of a telescopic bracket according to a first embodiment of the smart microphone holder of the present invention;
FIG. 3 is a cross-sectional view taken along line C-C of FIG. 2 illustrating a first embodiment of an intelligent microphone holder according to the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 1 according to a first embodiment of the present invention;
fig. 5 is a cross-sectional view (without stopping state) of fig. 1B-B of a first embodiment of an intelligent microphone holder according to the present invention;
fig. 6 is a sectional view (at rest state) of fig. 1B-B of a first embodiment of an intelligent microphone holder according to the present invention.
Reference numerals in the above figures:
10 telescopic supports, 11 support sleeves, 12 telescopic rods, 13Z-axis rotating shafts and 14 support cylinders
20 lifting driving mechanism, 21 lifting rotating shaft, 22 lifting gear, 23 rack, 24 lifting motor and 25 support base
30 electric wheat clamp, 31 wheat clamp shell, 32 pitching part, 33 wheat clamp, 34 angle displacement sensor, 35 first rotation stop, 36 second rotation stop, 37 laser ranging sensor
40 wheat clamp driving mechanism, 41 sun gear, 42 ring gear, 43 planetary gear, 44 planet carrier, 45 planetary rotating shaft, 46 driving shaft, 47 regulating motor, 48 first bevel gear, 49 second bevel gear
50-stop structure, 51-stop block pair, 52-electromagnet pair and 53-chute
11.1 guide part, 11.2 drive part
31.1 wheat clamp body, 31.2Z-direction pipe joint, 31.3Z-direction pivot part, 31.4 pitch pivot part and 32.1 pitch rotating shaft
52.1 permanent magnet, 52.2 electromagnet.
Detailed Description
The following detailed description of the embodiments of the present invention is provided in connection with the accompanying drawings, but is not intended to limit the scope of the invention.
Example one
An intelligent microphone fixing frame comprises a telescopic support 10, wherein the telescopic support 10 comprises a support sleeve 11 and a telescopic rod 12 which are in guiding sliding fit, and the telescopic rod 12 is driven by a lifting driving mechanism 20 to ascend or descend along the Z direction. The support sleeve 11 is a special-shaped section piece integrally connected with a circle and a triangle and comprises a guide part 11.1 and a driving part 11.2, and the telescopic rod 12 is in sliding fit in the guide part 11.1. The telescopic rod 12 is rotatably provided with a lifting rotating shaft 21, the lifting rotating shaft 21 is connected with a lifting motor 24 through a coupler, at least one lifting gear 22 is fixed on the lifting rotating shaft 21, a rack 23 is fixed on the driving part 11.2, and the lifting gear 22 is meshed with the rack 23. The lift motor 24 is a step servo motor.
The top of the telescopic rod 12 is rotatably connected with an electric wheat clamp 30, and the telescopic rod 12 takes a Z axis as a rotating shaft; the electric wheat clamp 30 is driven by a wheat clamp driving mechanism 40 to realize horizontal rotation around a Z axis and vertical pitching rotation around an X axis. The electric wheat clamp 30 comprises a cylindrical wheat clamp shell 31 and a pitching part 32, and a wheat clamp driving mechanism 40 is simultaneously coupled with the wheat clamp shell 31 and the pitching part 32. The wheat clamp shell 31 comprises a wheat clamp body 31.1 which takes a Z axis as a central rotating shaft, the wheat clamp body 31.1 is coaxially provided with a Z-direction pipe joint 31.2, a Z-direction pivot part 31.3 and a pitching pivot part 31.4 of which the rotating shaft is vertical to the Z axis, and the Z-direction pivot part 31.3 and the pitching pivot part 31.4 are respectively provided with a bearing. The pitch 32 is rotatably arranged in the pitch pivot 31.4. The pitching part 32 comprises a pitching rotating shaft 32.1 and a pitching shell 32.2, the pitching shell 32.2 is fixedly connected with the pitching rotating shaft 32.1, the pitching shell 32.1 is integrally connected with the wheat clamp 33, and an inner hole of the wheat clamp shell 31 is integrally connected with the gear ring 42.
The wheat clamp driving mechanism 40 comprises a sun gear 41, a gear ring 42 and at least 3 planet gears 43, wherein the planet gears 43 are meshed between the sun gear 41 and the gear ring 42, the planet gears 43 are fixedly connected with a planet carrier 44, and the planet carrier 44 is integrally connected with a planet rotating shaft 45. The sun gear 41 is fixedly connected with a driving shaft 46, the driving shaft 46 is arranged in the telescopic rod 12 in a penetrating mode, and the other end of the driving shaft 46 is connected with an adjusting motor 47 through a coupler. The adjustment motor 47 is fixed to the stand base 25. The planet shaft 45 is rotatably arranged in the Z-pivot 31.3 via the support cylinder 14. The planet rotating shaft 45 extends into the pitching shell 32.1 of the pitching part, a first bevel gear 48 is fixedly arranged at the end part of the planet rotating shaft, a second bevel gear 49 is fixedly arranged on the pitching rotating shaft 32.1, and the first bevel gear 48 is meshed with the second bevel gear 49. The adjustment motor 47 is a stepping servo motor.
Action setting: the purpose of action setting is that the three of the planetary gear mechanism need one input and one output, and the other is motionless. The sun gear is input, and the planetary gear needs to be ensured to be immobile when the gear ring 42 needs to be output; when the sun gear is the input and the planet gear carrier is the output, it is necessary to ensure that the ring gear is stationary. Therefore, the top of the telescopic rod 12 is provided with a first rotation stop 35 for stopping the wheat clamp body 31.1, so that the wheat clamp driving mechanism 40 can actuate the pitching part 32; the wheat clamp body 31.1 is provided with a second rotation stop 36 for stopping the pitch 32, so that the wheat clamp driving mechanism 40 can actuate the wheat clamp body 31.1.
The rotation stopping structure 50 comprises a rotation stopping block pair 51, one end of the rotation stopping block pair 51 is fixed in a pivoting mode, the other end of the rotation stopping block pair 51 is connected with an electromagnet pair 52, and the electromagnet pair 52 is arranged in a sliding groove 53 in a relatively sliding mode. The electromagnet pair 52 comprises a permanent magnet 52.1 and an electromagnet 52.2, the electromagnet 52.2 comprises an iron core and a coil, the coil is powered by a control circuit, when the coil is powered in the forward direction, the electromagnet 52.2 generates magnetism the same as the magnetic pole of the permanent magnet 52.1, a repulsive force is generated, the electromagnet pair 52 can be forced to slide to two ends of the sliding groove 53, and therefore the rotation stop block pair 51 is enabled to expand or contract to abut against a coaxial stop body.
When the stopping body is a wheat clamp body, the Z-axis rotating shaft 13 is welded on the inner wall of the top of the telescopic rod 12, one end of the rotation stopping block pair 51 is pivotally fixed on the Z-axis rotating shaft 13, and when the electromagnet pair 52 slides to the two ends of the sliding groove 53, the rotation stopping block pair 51 is expanded to abut against the wheat clamp body. When the stopping body is a pitching part 32, the wheat clamp body is provided with a Z-axis rotating shaft 13, and the Z-axis rotating shaft 13 is coaxial with the pitching pivoting part 31.4; one end of the rotation stopping block pair 51 is pivotally fixed on the Z-axis rotating shaft 13, and when the electromagnet pair 52 is mutually attracted to the middle of the sliding chute 53, the rotation stopping block pair 51 is contracted and abutted against the pitching shell 32.2.
The microphone holder shell 31 has a laser distance measuring sensor 37 on the top, the stand base 25 has a laser reflector, the microphone holder 33 is a semi-circular holder with a central axis A, the microphone is held in the microphone holder 33, and the position of the central axis A approximately at the midpoint of the microphone holder 33 is defined as a microphone mass point B (X)0，Y0，Z0) For measuring the height of a microphone particle B from the ground, called height H0. The initial height of the wheat height may optionally be set to 1700 mm. The pitch pivot part 31.4 is spirally provided with an external rotation cap 33, an angular displacement sensor 34 is arranged in the external rotation cap, and the shaft end of the pitch rotating shaft 32.1 is coupled with the angular displacement sensor 32 to measure the angle of the central axis a rotating relative to the horizontal plane, which is called ergot gamma. Initial angle gamma of ergot0Can be set to 0 ℃. The wheat clamp 33 is also provided with a monitoring camera, and the control device can automatically photograph people within 3 meters and calculate the height of the mouth of the human body according to the image recognition technology, namely the mouth height H1(how to take a picture, how to identify, this section is prior art and is not within the technical scope of the present invention).
An automatic positioning method of an intelligent microphone fixing frame comprises the following steps,
1) initializing, starting the lifting driving mechanism 20 and the wheat clamp driving mechanism 40, and adjusting the wheat height to the initial height H0Ergot as initial angle gamma0；
2) Acquiring the mouth height of the mouth, periodically acquiring the face data of the camera, acquiring the photographing data of the human body and acquiring the mouth height H1；
3) Height adjustment of telescopic rod
|ΔH|=|H1-H0I, determine | Δ H shading<5mm, if yes, executing the next step; otherwise, the following adjustments are performed:
the determination is that deltah is <0,
if yes, the lifting motor 24 is started to reduce the height | Δ H |;
if not, the lifting motor 24 is started to raise the height | delta H |;
4) adjusting horizontal turning angle
The monitoring camera is used for shooting, the camera is used for capturing the head image, and the three-dimensional coordinate position of the mouth position, M (X), is obtained by combining the height of the human body1，Y1，Z1) And microphone particle B (X)0，Y0，Z0) By comparison, the process of the first and second steps,
determine | X1-X0|>5mm, if not, executing the next step; if yes, the following adjustments are performed:
① calculate the horizontal turn angle β,
；
②ΔX=X1-X0judgment of Δ X>0，
If yes, clockwise rotating by a horizontal rotation angle beta;
if not, rotating the horizontal rotation angle beta anticlockwise;
starting the rotation stopping structure 50 to complete rotation stopping positioning of the horizontal rotation of the wheat clamp shell 31.1;
5) adjusting pitch angle
① calculating the pitch angle gamma and the relative angle
；
②ΔZ=z1-z0Judgment of Δ Z>0，
Is, then
Starting the adjusting motor 47 to let wheatThe clamp is rotated upwards by an angle gamma;
otherwise, then
Starting the adjusting motor 47 to rotate the wheat clamp downwards by an angle of gamma;
according to the positioning method, a user who needs to be repositioned at each time touches and presses the automatic adjustment button on the microphone support, the execution of the automatic adjustment method is triggered, the pointing is not wrong, the automatic adjustment is realized, and the positioning method is practical and convenient.
The implementation principle of the technical scheme of the invention is explained as follows:
the invention aims to solve the technical problems of automatically adjusting height, automatically centering the mouth and automatically adjusting the pitch angle according to the height of a speaker, and adopts the following technical means:
1) the wheat clamp driving mechanism 40 is cooperated with the wheat clamp shell 31 and the pitching part 32
The wheat clamp driving mechanism 40 is in planetary gear transmission, a sun gear 41, a gear ring 42 and a planetary gear 43, the planetary gear 43 is meshed between the sun gear 41 and the gear ring 42, the planetary gear 43 is fixedly connected with a planetary carrier 44, and the planetary carrier 44 is integrally connected with a planetary rotating shaft 45. The ring gear 42 is connected integrally with the main body 31.1, and the planetary shaft 45 is connected with the pitch part 32 by a direction-changing bevel gear drive.
The sun gear is fixedly connected with the driving shaft and is used as power input, when the pitching part stops, the planet carrier does not move, the gear ring 42 rotates, and the Z-direction pipe joint 31.2 rotatably arranged on the telescopic rod is driven to rotate to complete horizontal rotation adjustment; when the gear ring 42 is not moved, the planet carrier rotates to drive the pitching part to rotate around the pitching pivoting part 31.4 to perform pitching adjustment.
It is the planetary gear transmission that actuates the horizontal rotation of the wheat clamp housing and the pitch rotation of the pitch portion, respectively, that achieves the cooperative cooperation of the wheat clamp drive mechanism 40 with the wheat clamp housing 31 and the pitch portion 32.
2) The drive shaft penetrates through the telescopic rod, so that the telescopic drive mechanism 20 is not influenced when the adjusting motor is far away from the microphone
The telescopic driving mechanism 20 is located at the lower part of the support sleeve, the motor of the telescopic driving mechanism is far away from the microphone, and the driving shaft 46 of the sun gear 41 for actuating the planetary gear mechanism is arranged in the telescopic rod in a penetrating way and penetrates through the lifting gear 22, so that the action of the telescopic driving mechanism 20 is not influenced, and the adjusting motor 47 is located at the support base 25 close to the bottom surface.
The cooperative matching of the microphone clamp driving mechanism 40, the microphone clamp shell 31 and the pitching part 32 and the penetration of the driving shaft in the telescopic rod enable the adjusting motor to be far away from the microphone and simultaneously not to influence the telescopic driving mechanism 20, so that the height of the intelligent microphone fixing frame can be automatically adjusted according to the height, the posture of the microphone can be adjusted according to the relative position of the human mouth and the microphone, and the intelligent microphone fixing frame is accurate in height posture, low in noise, convenient and practical.
Claims (6)
1. An intelligent microphone fixing frame is characterized by comprising
The telescopic support (10) comprises a support sleeve (11) and a telescopic rod (12) which are in guiding sliding fit, the lifting driving mechanism (20) comprises a support base (25), and the support sleeve (11) is fixed on the support base (25); the telescopic bracket is coupled with the lifting driving mechanism (20) and is used for automatically adjusting the height of the telescopic rod through the lifting driving mechanism (20) according to the mouth height of the speaker;
the electric wheat clamp (30) comprises a wheat clamp shell (31) and a pitching part (32), the wheat clamp shell (31) can be horizontally and rotatably arranged at the top of the telescopic rod (12), the pitching part (32) can be vertically and rotatably arranged in the wheat clamp shell (31), a wheat clamp driving mechanism (40) is simultaneously coupled with the wheat clamp shell (31) and the pitching part (32), and the electric wheat clamp is used for enabling the wheat clamp shell (31) to horizontally rotate around the telescopic rod (12) and enabling the pitching part (32) to pitch and rotate relative to the wheat clamp shell only through the wheat clamp driving mechanism (40) according to the coordinate position of the mouth of a speaker;
the wheat clamp driving mechanism (40) comprises a sun gear (41), a gear ring (42) and at least 3 planet gears (43), the planet gears (43) are meshed between the sun gear (41) and the gear ring (42), the planet gears (43) are fixedly connected with a planet carrier (44), and inner holes of the wheat clamp shell (31) are integrally connected with the gear ring (42); the sun gear (41) is fixedly connected with a driving shaft (46), the adjusting motor (47) is fixedly arranged on the bracket base (25), and the driving shaft (46) penetrates through the telescopic rod (12) to be connected with the adjusting motor (47);
the planet carrier (44) is integrally connected with a planet rotating shaft (45), a first bevel gear (48) is fixedly arranged at the end part of the planet rotating shaft (45), a second bevel gear (49) is fixedly arranged on the pitching rotating shaft (32.1), and the first bevel gear (48) is meshed with the second bevel gear (49);
the top of the telescopic rod (12) is provided with a first rotation stopping part (35) for stopping the wheat clamp shell (31), so that the wheat clamp driving mechanism (40) can enable the wheat clamp to adjust the pitching part (32); the wheat clamp shell (31) is provided with a second rotation stopping part (36) for stopping the pitching part (32), so that the wheat clamp driving mechanism (40) can make the wheat clamp shell (31) adjusted.
2. The intelligent microphone fixing frame as claimed in claim 1, wherein the lifting driving mechanism (20) comprises a lifting gear (22) and a rack (23), the telescopic rod (12) is rotatably provided with a lifting rotating shaft (21), the lifting rotating shaft (21) is fixedly provided with at least one lifting gear (22), the rack (23) is fixed by the support sleeve (11), and the lifting gear (22) is meshed with the rack (23).
3. The smart microphone holder as claimed in claim 1, wherein the microphone holder housing (31) comprises a microphone holder body (31.1) having a central rotation axis, the microphone holder body (31.1) is coaxially provided with a Z-direction pipe joint (31.2), a Z-direction pivot portion (31.3) and a pitch pivot portion (31.4) having a rotation axis perpendicular to the Z-direction axis, the Z-direction pipe joint (31.2) is rotatably connected with the telescopic rod (12), and the pitch portion (32) is rotatably disposed in the pitch pivot portion (31.4).
4. The smart microphone holder as claimed in claim 1, wherein the pitching portion (32) comprises a pitching rotating shaft (32.1) and a pitching shell (32.2), the pitching shell (32.2) is fixedly connected with the pitching rotating shaft (32.1), the pitching shell (32.2) is integrally connected with a microphone clamp (33), and the microphone is clamped on the microphone clamp (33).
5. The smart microphone fixing frame according to claim 1, wherein the first and second rotation stopping structures (50) are rotation stopping structures, the rotation stopping structures (50) comprise rotation stopping block pairs (51), one ends of the rotation stopping block pairs (51) are pivotally fixed, the other ends of the rotation stopping block pairs are connected with electromagnet pairs (52), and the electromagnet pairs (52) are arranged in the sliding grooves (53) in a relatively sliding manner.
6. A method for automatically adjusting a smart microphone holder according to any of claims 1-5, comprising the steps of,
1) initializing, starting the lifting driving mechanism (20) and the wheat clamp driving mechanism (40), and adjusting the wheat height to an initial height H0Ergot as initial angle gamma0；
2) Acquiring the mouth height of a speaker, periodically acquiring camera face data, acquiring human body photographing data and acquiring the mouth height H1；
3) Height adjustment of telescopic rod
|ΔH|=|H1-H0If yes, executing the next step; otherwise, the following adjustments are performed:
it is determined whether deltah is less than 0,
starting a lifting driving mechanism (20) to reduce the height | delta H |;
if not, starting the lifting driving mechanism (20) to raise the height | delta H |;
4) adjusting horizontal turning angle
The monitoring camera is used for shooting, the camera is used for capturing the head image, and the three-dimensional coordinate position of the mouth position, M (X), is obtained by combining the height of the human body1，Y1，Z1) And microphone particle B (X)0，Y0，Z0) By comparison, the process of the first and second steps,
determine | X1-X0If the | is larger than 5mm, if not, executing the next step; if yes, the following adjustments are performed:
① calculate the horizontal turn angle β,
；
②ΔX=X1-X0judging whether the Delta X is larger than 0 or not,
if yes, clockwise rotating by a horizontal rotation angle beta;
if not, rotating the horizontal rotation angle beta anticlockwise;
5) adjusting pitch angle
① calculating the pitch angle gamma and the relative angle
；
②ΔZ=z1-z0Judging whether the Delta Z is larger than 0 or not,
is, then
Starting an adjusting motor (47) to enable the wheat clamp to rotate upwards by an angle gamma;
otherwise, then
And starting the adjusting motor (47) to rotate the wheat clamp downwards by an angle gamma.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010325084.1A CN111212347B (en) | 2020-04-23 | 2020-04-23 | Intelligence microphone mount |
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|---|---|---|---|
| CN202010325084.1A CN111212347B (en) | 2020-04-23 | 2020-04-23 | Intelligence microphone mount |
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| CN111212347B true CN111212347B (en) | 2020-09-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112367578B (en) * | 2020-10-30 | 2022-04-15 | 西南交通大学 | Adjusting device for automatically adjusting height of microphone and height correction method thereof |
| CN113160626A (en) * | 2021-04-21 | 2021-07-23 | 周口师范学院 | Multimedia audio-visual education platform |
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