CN210141445U - Cloud platform and shooting device - Google Patents
Cloud platform and shooting device Download PDFInfo
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- CN210141445U CN210141445U CN201921072273.1U CN201921072273U CN210141445U CN 210141445 U CN210141445 U CN 210141445U CN 201921072273 U CN201921072273 U CN 201921072273U CN 210141445 U CN210141445 U CN 210141445U
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Abstract
The utility model provides a cloud platform and shooting device. The holder comprises a feedback adjusting mechanism, a fixing frame and a speed reduction transmission mechanism; the speed reduction transmission mechanism comprises a transmission shaft, the transmission shaft is provided with a first end used for being in transmission connection with the motor and a second end used for being connected with the lens, and the transmission shaft penetrates through a shaft hole formed in the fixed frame and can rotate relative to the fixed frame; the feedback adjusting mechanism comprises a magnetic encoder and a magnet, one of the magnetic encoder and the magnet is fixed at the first end of the transmission shaft, the other of the magnetic encoder and the magnet is fixed on the fixing frame, and a gap is formed between the magnetic encoder and the magnet along the axis direction of the transmission shaft. The utility model discloses a feedback adjustment mechanism, whether accurate feedback camera lens rotates preset position, avoids speed reduction drive mechanism's assembly error, transmission error etc. compensate or reset the camera lens according to the feedback result, are favorable to improving the motion precision of camera lens to improve the shooting quality.
Description
Technical Field
The utility model relates to a security protection control technical field especially relates to a cloud platform and shooting device.
Background
The photographing apparatus generally includes a head and a lens mounted on the head for imaging. The pan-tilt generally comprises a motor and a speed reduction transmission mechanism, wherein the motor drives the lens to horizontally and vertically move through the speed reduction transmission mechanism, so that multi-angle shooting of the lens is realized. In order to detect whether the lens rotates to a preset angle, a stepping motor is generally used in the existing holder, the rotating angle of the stepping motor is obtained by obtaining the number of steps of the stepping motor and calculating according to a preset algorithm, and the rotating angle of the stepping motor is used for directly representing the actual rotating angle of the lens.
Specifically, the existing pan/tilt head is provided with an angle detection device including a sensor for detecting a rotational distance of a stepping motor and a controller. The sensor transmits the detected step number of the stepping motor to the controller, the controller calculates the rotation angle of the stepping motor according to a preset algorithm, and the rotation angle is regarded as the actual rotation angle of the lens.
However, because a speed reduction transmission mechanism needs to be arranged between the stepping motor and the lens to realize speed reduction and torque increase, and due to assembly errors, transmission errors and the like of the speed reduction transmission mechanism, an error exists between the actual rotation angle of the lens and the rotation angle of the stepping motor obtained through algorithm calculation, so that the rotation precision of the lens is difficult to guarantee, and the shooting quality is affected.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cloud platform and shooting device to solve current cloud platform because of speed reduction drive mechanism's assembly error, transmission error etc. for there is the error in the turned angle of camera lens, can't confirm whether the camera lens rotates and predetermines the position, reduced the motion precision of camera lens, thereby the technical problem of quality is shot in the influence.
A first aspect of the present invention provides a pan/tilt head, which includes a feedback adjustment mechanism, a fixing frame and a speed reduction transmission mechanism; the speed reduction transmission mechanism comprises a transmission shaft, the transmission shaft is provided with a first end used for being in transmission connection with the motor and a second end used for being connected with the lens, and the transmission shaft penetrates through a shaft hole formed in the fixing frame and can rotate relative to the fixing frame; the feedback adjusting mechanism comprises a magnetic encoder and a magnet, one of the magnetic encoder and the magnet is fixed at the first end of the transmission shaft, the other of the magnetic encoder and the magnet is fixed on the fixing frame, and a gap is formed between the magnetic encoder and the magnet along the axis direction of the transmission shaft.
Compared with the prior art, the utility model discloses a cloud platform that first aspect provided has following advantage:
the utility model discloses the cloud platform that the first aspect provided, one of magnetic encoder and magnet through with feedback adjustment mechanism sets up the first end at speed reduction drive mechanism's transmission shaft, set up another in magnetic encoder and the magnet on the mount, magnetic encoder and magnet rotate relatively, magnetic encoder utilizes the turned angle of hall effect detection transmission shaft, whether accurate feedback camera lens rotates anticipated angular position, avoid speed reduction drive mechanism's assembly error, transmission error etc., compensate or reset the camera lens according to the feedback result, be favorable to improving the motion precision of camera lens, thereby improve the shooting quality.
The holder as described above, wherein the holder further comprises a controller and a motor, and the controller is electrically connected to both the drive circuit of the motor and the magnetic encoder; the magnetic encoder is used for detecting the variation of the magnetic field intensity when the magnetic encoder and the magnet rotate relatively, determining the actual angle displacement of the transmission shaft according to the variation of the magnetic field intensity and sending the actual angle displacement to the controller; the controller is used for generating an expected angle displacement of the transmission shaft according to a control instruction, comparing the expected angle displacement with the actual angle displacement, and sending a control signal to the motor according to a comparison result so that the motor drives the transmission shaft to adjust the position of the lens.
The holder as described above, wherein the reduction transmission mechanism includes a driving wheel, a driven wheel and a transmission belt for driving and connecting the driving wheel and the driven wheel, the driving wheel is used for connecting with the output shaft of the motor, and the driven wheel is sleeved at the first end of the transmission shaft.
The holder as described above, wherein the reduction transmission mechanism further includes a rotating body and a bearing installed in the shaft hole; the transmission shaft and the rotating body are integrally arranged; the driven wheel is connected with the rotating body through the bearing, and the rotating body is used for connecting the lens.
The holder as described above, wherein the magnet is a magnetic column, the holder further comprises a first support, one end of the first support is fixedly connected to the fixed frame, and the magnetic column is mounted at the other end of the first support; the magnetic encoder is arranged on the end face, facing the magnetic column, of the driven wheel, and the magnetic encoder and the magnetic column are coaxially arranged.
The holder as described above, wherein the first bracket includes a first mounting plate, from the end of the first mounting plate faces the holder to extend to form a connecting plate and from the end of the connecting plate deviates from the first mounting plate extends to form a second mounting plate, the first mounting plate is provided with the magnetic column, and the second mounting plate is fixedly connected with the holder.
The holder as described above, wherein the first mounting plate is provided with a first fixing portion on a surface facing the fixing frame, and the first fixing portion is used for fixing the magnetic column.
The holder as described above, wherein the magnetic column is a cylindrical structure; the first fixing part is a circular ring for accommodating the magnetic column.
The holder as described above, wherein the second mounting plate is provided with at least one first mounting hole; the fixing frame is provided with a fixing seat, and the fixing seat is provided with a first fixing column fixedly connected with the first mounting hole.
The holder as claimed above, wherein the holder further comprises a first circuit board on which the magnetic encoder is integrated; the end face of the driven wheel facing the magnetic column is provided with a mounting groove for fixing the first circuit board.
The holder as described above, wherein the first circuit board is provided with at least one first fixing hole, the bottom wall of the mounting groove is provided with at least one second fixing hole, and the second fixing holes correspond to the first fixing holes one to one; the cloud platform still includes at least one first fastener, every first fastener all wears to establish and corresponds in first fixed orifices and the second fixed orifices, in order to with first circuit board is fixed in the mounting groove
The holder as described above, wherein the holder further includes a second support, one end of the second support is fixedly connected to the fixed frame, and the other end of the second support is provided with the magnetic encoder; the magnet is a magnetic column, the magnetic column is arranged on the end face, facing the magnetic encoder, of the driven wheel, and the magnetic column and the magnetic encoder are coaxially arranged.
The holder as described above, wherein the transmission shaft is a hollow shaft, and the magnet is a magnetic ring; the holder also comprises a third support, one end of the third support is fixedly connected with the end face of the driven wheel, and the other end of the third support is provided with the magnetic ring; the fixed frame is provided with an installation part for installing the magnetic encoder; the magnetic encoder and the magnetic ring are eccentrically arranged.
The holder according to the above, wherein the third support comprises a first mounting ring, a limiting ring disposed on the first mounting ring, and a second mounting ring disposed on the limiting ring, the first mounting ring, the limiting ring, and the second mounting ring are coaxial, and an outer diameter of the first mounting ring, an outer diameter of the limiting ring, and an outer diameter of the second mounting ring decrease in sequence; the first mounting ring is fixedly connected with the end face of the driven wheel; the magnetic ring is of a circular ring structure, and the magnetic ring is sleeved on the second mounting ring.
The holder as described above, wherein the end surface of the driven wheel facing the magnetic encoder is provided with at least one second mounting hole along the circumferential direction thereof, the first mounting ring is provided with at least one third mounting hole along the circumferential direction thereof, and the third mounting holes correspond to the second mounting holes one to one; the holder further comprises at least one second fastener, and the second fastener penetrates through the second mounting hole and the corresponding third mounting hole so as to fix the first mounting ring on the end face, facing the magnetic encoder, of the driven wheel.
The holder as described above, wherein the holder further comprises a second circuit board on which the magnetic encoder is integrated; the second circuit board is provided with at least one second fixing hole, the fixing frame is provided with at least one second fixing column, the second fixing columns correspond to the second fixing holes one to one, and the second fixing columns penetrate through the second fixing holes so as to fix the second circuit board on the fixing frame.
The holder as described above, wherein the transmission shaft is a hollow shaft, and the magnet is a magnetic ring; the holder also comprises a fourth support, one end of the fourth support is fixedly connected with the fixed frame, and the other end of the fourth support is provided with the magnetic ring; the magnetic encoder is arranged on the end face, facing the magnetic ring, of the driven wheel; the magnetic encoder and the magnetic ring are eccentrically arranged.
The holder as described above, wherein the magnetic encoder is disposed outside the magnetic ring.
The holder as described above, wherein the magnetic ring is a multi-pair magnetic ring.
The utility model discloses the second aspect provides a shooting device, it includes camera lens and first aspect the cloud platform, the speed reduction drive mechanism of cloud platform with the camera lens is connected.
The utility model discloses a shooting device that second aspect provided, because it includes the first aspect the cloud platform, consequently the utility model discloses a shooting device that second aspect provides also has with the first aspect the same advantage of cloud platform.
In addition to the technical problems, technical features constituting technical solutions, and advantageous effects brought by the technical features of the technical solutions described above, the present invention provides other technical problems that a pan/tilt and a photographing apparatus can solve, other technical features included in the technical solutions, and advantageous effects brought by the technical features, which will be described in further detail in the following detailed description.
Drawings
The above and other objects, features and advantages of the embodiments of the present invention will become more readily understood from the following detailed description with reference to the accompanying drawings. Embodiments of the invention will be described, by way of example and not by way of limitation, in the accompanying drawings, in which:
fig. 1 is a schematic structural view of a pan/tilt head according to a first embodiment of the present invention;
FIG. 2 is a schematic view of the relative positions of the magnetic cylinder and the magnetic encoder of FIG. 1;
fig. 3 is a schematic structural view of a pan/tilt head provided by the second embodiment of the present invention;
FIG. 4 is a schematic diagram showing the relative positions of a single pair of pole magnetic rings and a magnetic encoder in FIG. 3;
FIG. 5 is a schematic diagram showing the relative positions of the multiple pairs of pole magnetic rings and the magnetic encoder in FIG. 3.
Description of reference numerals:
1: a rotating body; 11: a drive shaft;
2: a fixed mount; 21: a shaft hole; 22: a fixed seat;
3: a bearing;
4: a driven wheel; 41: mounting grooves;
5: a transmission belt;
61: a first circuit board; 62: a second circuit board;
7: a magnetic encoder;
8: a magnetic column;
9: a magnetic ring;
10: a first bracket; 110: a first mounting plate; 120: a connecting plate; 130: a second mounting plate; 131: a first mounting hole;
20: a third support; 210: a first mounting ring; 211: a third mounting hole; 220: a limiting ring; 230: a second mounting ring.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
Fig. 1 is a schematic structural view of a pan/tilt head according to a first embodiment of the present invention; FIG. 2 is a schematic view of the relative positions of the magnetic cylinder and the magnetic encoder of FIG. 1; fig. 3 is a schematic structural view of a pan/tilt head provided by the second embodiment of the present invention; FIG. 4 is a schematic diagram showing the relative positions of a single pair of pole magnetic rings and a magnetic encoder in FIG. 3; FIG. 5 is a schematic diagram showing the relative positions of the multiple pairs of pole magnetic rings and the magnetic encoder in FIG. 3.
Referring to fig. 1, an embodiment of the present invention provides a pan/tilt head, which includes a feedback adjusting mechanism, a fixing frame 2 and a deceleration transmission mechanism, wherein the deceleration transmission mechanism includes a transmission shaft 11, the transmission shaft 11 has a first end for being connected to a motor in a transmission manner and a second end for being connected to a lens, and the transmission shaft 11 is inserted into a shaft hole 21 formed in the fixing frame 2 and can rotate relative to the fixing frame 2; the feedback adjusting mechanism comprises a magnetic encoder 7 and a magnet, one of the magnetic encoder 7 and the magnet is fixed at the first end of the transmission shaft 11, the other of the magnetic encoder 7 and the magnet is fixed on the fixing frame 2, and the magnetic encoder 7 and the magnet have a gap along the axial direction of the transmission shaft. The controller is electrically connected with a drive circuit of the motor and the magnetic encoder 7. The magnetic encoder 7 is configured to detect a variation of the magnetic field strength when the magnetic encoder and the magnet rotate relative to each other, determine an actual angular displacement of the transmission shaft 11 according to the variation of the magnetic field strength, and send the actual angular displacement to the controller. The controller is used for generating an expected angle displacement of the motor according to the control command, comparing the expected angle displacement with an actual angle displacement and adjusting the position of the motor according to a comparison result.
Specifically, the fixing frame 2 is used for fixedly supporting the motor, and may include a fixing housing, the fixing housing may be provided with a shaft hole 21 corresponding to the position of the transmission shaft 11, and the transmission shaft 11 of the reduction transmission mechanism is inserted into the shaft hole 21. The stationary housing may also be provided with a mounting seat 22 for fixing the magnetic encoder 7 or the magnet. The embodiment of the utility model provides a do not restrict the concrete structure of mount 2.
The speed reducing transmission mechanism comprises a transmission shaft 11, wherein a first end of the transmission shaft 11 is used for being in transmission connection with the motor, and a second end of the transmission shaft 11 is used for being connected with the lens and transmitting power output by the motor to the lens so as to enable the lens to rotate to a desired angle position. The transmission shaft 11 may be a single shaft, one end of which is used for being in transmission connection with the motor, and the other end of which is connected with the lens; alternatively, the transmission shaft 11 may include two sections of shafts, and the two sections of shafts are connected by a coupling. The drive shaft 11 may be a solid shaft; or, the transmission shaft 11 may also be a hollow shaft, and is applied to a pan-tilt where the transmission shaft 11 needs to be threaded. The reduction transmission mechanism can also comprise a gear transmission mechanism, the reduction transmission mechanism can also comprise a belt transmission mechanism, and the reduction transmission mechanism can also comprise other transmission mechanisms. The utility model discloses the preferred belt drive mechanism of speed reduction drive mechanism.
The magnetic encoder 7 and the magnet have a gap therebetween in the axial direction of the transmission shaft 11, and are capable of relative rotation. In some embodiments, referring to fig. 3, the magnetic encoder 7 is mounted on a stationary mounting frame 2 and the magnet is mounted on a first end of a drive shaft 11 that moves in rotation. In other embodiments, referring to fig. 1, the magnetic encoder 7 is mounted on a first end of a drive shaft 11 that rotates, and the magnet is mounted on a stationary mounting frame 2. The magnetic encoder 7 may be an existing magnetic encoder structure, which is usually a chip structure, and in the actual installation process, the magnetic encoder 7 may be integrated on a circuit board of the cradle head, and the circuit board is fixed on the first end of the transmission shaft 11 or the fixing frame 2.
In the use, according to magnetic encoder 7's specification, make and satisfy certain condition between magnetic encoder 7 and the magnet, as shown in fig. 1, when motor drive transmission shaft 11 rotated, transmission shaft 11 drove magnetic encoder 7 and rotates together, and like this, relative rotation takes place between magnetic encoder 7 and the magnet, and magnetic encoder 7 senses magnetic field and changes, can detect the actual angle displacement volume of transmission shaft 11 according to hall effect magnetic encoder 7, the actual angle displacement volume of camera lens promptly to send the testing result for the controller of cloud platform. The controller of the pan/tilt head generates an expected angular position amount of the motor according to the control instruction, compares the expected angular displacement amount with an actual angular displacement amount, and adjusts the position of the transmission shaft 11, that is, adjusts the position of the lens according to the comparison result.
It is understood that the magnet may be a ru fe boron magnet, a ferrite magnet, or the like, which is not limited by the embodiment of the present invention. The magnet can be a magnetic column, a magnetic ring and the like, and the specific shape of the magnet can be designed in an adaptive manner according to the specific structure of the holder so as to adapt to the existing structure of the holder.
The embodiment of the utility model provides a cloud platform, one of magnetic encoder and magnet through with feedback adjustment mechanism sets up the first end at speed reduction drive mechanism's transmission shaft, set up another in magnetic encoder and the magnet on the mount, magnetic encoder and magnet rotate relatively, magnetic encoder utilizes the turned angle of hall effect detection transmission shaft, whether accurate feedback camera lens rotates anticipated angular position, avoid speed reduction drive mechanism's assembly error, transmission error etc., compensate or reset the camera lens according to the feedback result, be favorable to improving the motion precision of camera lens, thereby improve and shoot the quality.
Further, the cradle head further comprises a controller (not shown) and a motor (not shown), wherein the controller is electrically connected with a driving circuit of the motor and the magnetic encoder 7; the magnetic encoder 7 is used for detecting the variation of the magnetic field intensity when the magnetic encoder and the magnet rotate relatively, determining the actual angle displacement of the transmission shaft according to the variation of the magnetic field intensity and sending the actual angle displacement to the controller; and the controller is used for generating an expected angle displacement of the transmission shaft according to the control instruction, comparing the expected angle displacement with the actual angle displacement, and sending a control signal to the motor according to a comparison result so that the motor drives the transmission shaft to adjust the position of the lens.
Specifically, after receiving the control instruction, the controller sends a control signal to the motor according to the control instruction, so that the motor operates, and drives the lens to rotate through the transmission shaft 11, so that the lens rotates by a desired angle displacement amount to reach a desired position for picture shooting. Due to assembly errors, transmission errors, and the like of the reduction transmission mechanism, the lens does not rotate to a desired position, that is, the lens does not rotate by a desired angular displacement amount. And in the rotation process of the transmission shaft 11, the magnetic encoder 7 and the magnet rotate relatively, the magnetic encoder 7 senses the change of the magnetic field, the actual angle displacement of the transmission shaft 11, namely the actual angle displacement of the lens, can be detected according to the Hall effect magnetic encoder 7, and the detection result is sent to the controller. The controller of the pan/tilt head compares the expected angular displacement with the actual angular displacement, and adjusts the position of the transmission shaft 11, i.e., the position of the lens, according to the comparison result.
Illustratively, the controller controls the motor to operate after receiving the control command, and the lens rotates by driving the transmission shaft 11, but the lens does not rotate to the preset position. For example, the controller controls the motor to operate according to the control command, and drives the lens to rotate by an expected angle of 45 degrees. In the rotating process of the transmission shaft 11, relative rotation occurs between the magnetic encoder 7 and the magnet, the magnetic encoder 7 senses that the magnetic field changes, the actual angle displacement of the transmission shaft 11 can be detected according to the Hall effect magnetic encoder 7, and the actual angle displacement of the transmission shaft 11 detected by the magnetic encoder 7 is 43 degrees, namely, the lens actually rotates 43 degrees. The magnetic encoder 7 sends the actual rotation angle displacement 43 degrees to the controller, the controller compares the actual rotation angle displacement 43 degrees with the expected angle displacement 45 degrees, and the comparison shows that the lens rotates by two degrees less, at the moment, the controller controls the motor to continue to operate according to the comparison result, and the transmission shaft 11 drives the lens to continue to rotate by two degrees. It can be understood that the difference between the expected angular displacement and the actual angular displacement is smaller than a threshold, which is obtained by simulation based on the magnetic encoder, the motor, the controller, the reduction transmission mechanism, and the like, and is not limited herein.
Because the belt drive has the advantage that the transmission is steady, the embodiment of the utility model provides a speed reduction transmission mechanism still includes belt drive mechanism. Specifically, speed reduction drive mechanism includes action wheel (not shown), follows driving wheel 4 and transmission belt 5 of transmission connection action wheel and follow driving wheel 4, and the action wheel is used for with the output shaft of motor, and follow driving wheel 4 suit is in the first end of transmission shaft 11.
The output shaft of action wheel and motor can be connected through the bearing, and the action wheel is connected with from 5 transmissions of drive belt between the driving wheel 4, the embodiment of the utility model provides a do not limit to the action wheel and the reduction ratio from between the driving wheel, and technical personnel in the field can set up according to actual conditions.
The transmission belt 5 may be a flat belt, a V-belt, a circular belt, a toothed belt, etc., and preferably, the transmission belt 5 is a toothed belt to reduce noise. Correspondingly, the driving wheel and the driven wheel 4 are provided with tooth-shaped structures.
The driven wheel 4 is sleeved at the first end of the transmission shaft 11, and the magnetic encoder 7 or the magnet can be arranged on the end face of one end of the driven wheel 4 far away from the lens, or the magnetic encoder 7 or the magnet can also be arranged at the first end of the transmission shaft 11. Referring to fig. 1, a magnetic encoder 7 is fixedly installed on the end face of one end of the driven wheel 4 far away from the lens, the magnetic encoder 7 rotates along with the rotation of the driven wheel 4, and the magnet is installed on the stationary fixed frame 2; alternatively, referring to fig. 3, a magnet is fixedly mounted on the end surface of the driven wheel 4 at the end far away from the lens, the magnet rotates along with the rotation of the driven wheel 4, and the magnetic encoder 7 is mounted on the stationary fixed frame 2.
Furthermore, the speed reduction transmission mechanism also comprises a rotating body 1 and a bearing 3 arranged in the shaft hole 21, and the transmission shaft 11 and the rotating body 1 are integrally arranged; the driven wheel 4 is connected with the rotating body 1 through a bearing 3, and the rotating body 1 is used for connecting a lens.
Specifically, the transmission shaft 11 is provided integrally with the rotor 1, and the transmission shaft 11 is connected with the inner ring of the bearing 3. And the terminal surface of following driving wheel 4 and being close to bearing 3 sets up circular recess for be connected with the outer lane of bearing 3, the terminal surface that deviates from bearing 3 from driving wheel 4 is used for installing magnetic encoder 7 or magnet.
Of course, the transmission shaft 11 may also include two parts, one part of which is integrally disposed with the rotating body 1, and the other part of which is integrally disposed with the driven wheel 4, that is, one end of the rotating body 1 away from the lens is provided with a section of shaft in a protruding manner, and one end of the driven wheel 4 close to the rotating body 1 is provided with another section of shaft in a protruding manner, and the two sections of shafts are connected through the bearing 3.
Rotor 1 can be provided with the mount pad to be connected with the camera lens, the embodiment of the utility model provides a do not restrict rotor 1's concrete structure.
The power output process of the motor is as follows: the output shaft of motor rotates, drives speed reduction drive mechanism's action wheel and rotates, and under the transmission effect of drive belt 5, from rotary motion of driving wheel 4, under the effect of bearing 3, rotor 1 drives the camera lens and rotates to reach preset shooting angle.
The shape of the magnet may be varied, for example, the magnet may be of a cylindrical configuration, or the magnet may be of a circular configuration.
In some embodiments, referring to fig. 1 and 2, the magnet is a magnetic column 8, the tripod head further includes a first support 10, one end of the first support 10 is fixedly connected with the fixed frame 2, and the other end of the first support 10 is provided with the magnetic column 8; magnetic encoder 7 is disposed on the end surface of driven wheel 4 facing magnetic column 8, and magnetic encoder 7 and magnetic column 8 are disposed coaxially.
In the embodiment, the magnetic column 8 is fixedly connected with the fixed frame 2 through the first bracket 10, and is static relative to the fixed frame; the magnetic encoder 7 is arranged on the end face of the driven wheel 4 facing the magnetic column 8 and rotates relative to the fixed frame 2.
Further, the first bracket 10 includes a first mounting plate 110, a connecting plate 120 extending from an end of the first mounting plate 110 toward the fixing frame 2, and a second mounting plate 130 extending from an end of the connecting plate 120 away from the first mounting plate 110, wherein the first mounting plate 110 is mounted with a magnetic pillar 8, and the second mounting plate 130 is fixedly connected with the fixing frame 4.
Wherein the first mounting plate 110 and the second mounting plate 130 are respectively located at two sides of the connecting plate 120, the first bracket 10 forms a zigzag structure, and preferably, the first mounting plate 110, the connecting plate 120 and the second mounting plate 130 are an integrally formed integral piece. The first mounting plate 110 is used for mounting the magnetic column 8, for example, a groove is formed in an end surface of the first mounting plate 110 facing the fixed frame 2, and the magnetic column 8 is in interference connection with the groove; for another example, a first fixing portion (not shown) is disposed on a surface of the first mounting plate 110 facing the fixing frame 4, and the first fixing portion is used for fixing the magnetic pillar 8. The first fixing portion may be a circular ring fixed on a surface of the first mounting plate 110 facing the fixing frame 4, and in this case, the magnetic pillar 8 has a cylindrical structure, and the magnetic pillar 8 of the cylindrical structure is accommodated in the circular ring. Of course, the magnetic column 8 can also be the cylinder structure of other shapes, and the size of magnetic column 8 and the current structure looks adaptation of cloud platform, the embodiment of the utility model provides a do not limit here.
It will be appreciated that the first support 10 is not limited to that shown in fig. 1 in order to accommodate different models of pan-tilt structures.
Further, the second mounting plate 130 is provided with at least one first mounting hole 131, the fixing bracket 4 is provided with a fixing base 22, and the fixing base 22 is provided with a first fixing column (not shown) fixedly connected with the first mounting hole 131. For example, as shown in fig. 1, the second mounting plate 130 may be provided with four first mounting holes 131, the four first mounting holes 131 form a diamond pattern, correspondingly, the fixing base 22 is also provided with four first fixing columns, and the four first fixing columns correspond to the four first mounting holes 131 in position, and the embodiment of the present invention is not limited to the number and arrangement of the first mounting holes 131.
With continued reference to fig. 1, the cloud platform of the embodiment of the present invention further includes a first circuit board 61, and the magnetic encoder 7 is integrated on this first circuit board 61. The end surface of driven wheel 4 facing magnetic pole 8 is provided with mounting groove 41 for fixing first circuit board 61. The first circuit board 61 may be a PCB board or an FPC board, which is not limited herein. The first circuit board 61 is provided with a control component of the pan/tilt head, which is not limited in this embodiment. The shape of the first circuit board 61 may be various, and for example, the shape of the first circuit board 61 may be as shown in fig. 1. To the pan tilt head structure of different models, the shape and the size of first circuit board 61 are different, promptly, the shape and the size of first circuit board 61 and the concrete structure adaptation of cloud platform, the embodiment of the utility model provides a do not injecing to this.
In order to fix the first circuit board 61 in the mounting groove 41, as shown in fig. 1, at least one first fixing hole (not shown) is provided on the first circuit board 61, and correspondingly, at least one second fixing hole (not shown) is provided on the bottom wall of the mounting groove 41, and each second fixing hole corresponds to one first fixing hole. The cradle head further comprises first fasteners (not shown in the figures), each of which is inserted into the corresponding first fixing hole and the second fixing hole, so that the first circuit board 61 can be fixed in the mounting groove 41. For example, as shown in fig. 1, four first fixing holes may be provided on the first circuit board 61, and correspondingly, four second fixing holes may be provided on the mounting groove 41. The embodiment of the utility model provides a quantity and the mode of arranging of first fixed orifices and second fixed orifices do not restrict.
In other embodiments, the tripod head further includes a second support (not shown in the drawings), one end of the second support is fixedly connected to the fixed frame 2, the other end of the second support is provided with a magnetic encoder 7, the magnet is a magnetic column 8, the magnetic column 8 is disposed on an end surface of the driven wheel 4 facing the magnetic encoder 7, and the magnetic column 8 and the magnetic encoder 7 are coaxially disposed.
This embodiment differs from the previous embodiment in that the magnetic cylinder 8 is arranged on the end face of the driven wheel 4 facing the magnetic encoder 7, which rotates with respect to the fixed frame 2; the magnetic encoder 7 is arranged on the fixed frame 2 and is stationary relative to the fixed frame 2.
In this embodiment, the second stent may be a stent of zigzag structure. One end of the second support is provided with a fixing hole fixedly connected with the first circuit board 61, and the other end of the second support is provided with a fixing hole fixedly connected with the fixing frame 2. The embodiment of the utility model provides a do not restrict the concrete structure of second support, the structure of second support can be designed according to the current structure suitability of cloud platform to the technical personnel in the field.
In the above two embodiments, the magnet is a magnetic pillar 8, and the magnetic pillar 8 is disposed coaxially with the magnetic encoder 7. The structure is suitable for the tripod head without threading requirements at the position of the transmission shaft 11, and the whole layout space is compact.
It should be understood that the magnetic cylinder 8 is coaxial with the magnetic encoder 7, for example, the coaxiality is ± 0.25mm, the magnetic cylinder 8 and the magnetic encoder 7 are also required to be arranged in parallel, and the deviation of the parallel of the magnetic cylinder 8 and the magnetic encoder 7 is within 5 °, for example, the deviation of the parallel of the magnetic cylinder 8 and the magnetic encoder 7 is 3 °. Of course, the coaxial and parallel installation requirements of the magnetic pole 8 and the magnetic encoder 7 are not limited thereto, and those skilled in the art can install the magnetic pole according to the specification of the magnetic encoder 7 in particular.
However, there is generally a threading requirement at the transmission shaft of the horizontal rotation of the holder, and at this time, a space for threading needs to be reserved. In this case, the magnet may have a magnetic ring structure.
In some embodiments, the transmission shaft 11 is a hollow shaft, and the magnet is a magnetic ring 9; the tripod head also comprises a third bracket 20, one end of the third bracket 20 is fixedly connected with the end surface of the driven wheel 4, and the other end of the third bracket 20 is provided with a magnetic ring 9; the fixed frame 2 is provided with a mounting part for mounting the magnetic encoder 7; the magnetic encoder 7 and the magnetic ring 9 are eccentrically arranged.
In the embodiment, the magnetic ring 9 is fixedly connected with the driven wheel 4 through a third bracket 20, and rotates relative to the fixed bracket 2; the magnetic encoder 7 is fixedly connected with the fixed frame 2 and is static relative to the fixed frame 2.
Further, the third bracket 20 includes a first mounting ring 210, a limiting ring 220 disposed on the first mounting ring 210, and a second mounting ring 230 disposed on the limiting ring 220, and the first mounting ring 210, the limiting ring 220, and the second mounting ring 230 are coaxial, and the outer diameters of the first mounting ring 210, the limiting ring 220, and the second mounting ring 230 decrease in sequence; the first mounting ring 210 is fixedly connected with the end face of the driven wheel 4; the magnetic ring 9 is a circular ring structure, and the magnetic ring 9 of the circular ring structure is sleeved on the second mounting ring 230.
It can be understood that the magnetic ring 9 may also be an annular structure with other shapes, and those skilled in the art can design the specific structure of the magnetic ring 9 according to the existing structure adaptability of the pan/tilt head, and the embodiment of the present invention is not limited herein.
Preferably, the first mounting ring 210, the stop collar 220, and the second mounting ring 230 are integrally formed as a single piece.
Furthermore, the end surface of the driven wheel 4 facing the magnetic encoder 7 is provided with at least one second mounting hole along the circumferential direction thereof, the first mounting ring 210 is provided with at least one third mounting hole 211 along the circumferential direction thereof, and the third mounting holes 211 correspond to the second mounting holes one to one; the head also comprises at least one second fastening member (not shown in the figures) which is inserted in the second mounting hole and the corresponding third mounting hole 211 so as to fix the first mounting ring 210 on the end surface of the driven wheel 4 facing the magnetic encoder 7. For example, referring to fig. 3, a groove is formed in an end surface of the driven wheel 4 facing the magnetic encoder 7, four second mounting holes are formed in a bottom wall of the groove, and the four second mounting holes are uniformly arranged at intervals along the circumferential direction of the driven wheel 4; correspondingly, four third mounting holes 211 are provided on the first mounting ring 210, and the third mounting holes 211 correspond to the second mounting holes one to one. Of course, the embodiment of the present invention does not limit the number of the second mounting holes and the number of the third mounting holes 211.
The embodiment of the utility model provides a cloud platform still includes second circuit board 62, and magnetic encoder 7 is integrated on second circuit board 62, in order to fix second circuit board 62 on mount 2, be provided with at least one second fixed orifices (not shown in the figure) on the second circuit board 62, be provided with at least one second fixed column (not shown in the figure) on mount 2, and second fixed column and second fixed orifices one-to-one, the second fixed column is worn to establish in the second fixed orifices to fix second circuit board 62 on mount 2.
The second circuit board 62 may be a PCB board or an FPC board, which is not limited herein. The second circuit board 62 is provided with a control component of the pan/tilt head, which is not limited in this embodiment. The shape of the second circuit board 62 may be various, for example, the shape of the second circuit board 62 may be as shown in fig. 3. The shape and the size of second circuit board 62 and the current structure looks adaptation of cloud platform, the embodiment of the utility model provides a do not limit to this.
In other embodiments, the transmission shaft 11 is a hollow shaft, and the magnet is a magnetic ring 9; the holder also comprises a fourth bracket (not shown in the figure), one end of the fourth bracket is fixedly connected with the fixed frame 2, and the other end of the fourth bracket is provided with a magnetic ring 9; the magnetic encoder 7 is arranged on the end face of the driven wheel 4 facing the magnetic ring 9; the magnetic encoder 7 and the magnetic ring 9 are eccentrically arranged.
The difference between this embodiment and the above embodiment is that the magnetic ring 9 is fixedly connected with the fixed frame 2 through a fourth bracket, and is stationary relative to the fixed frame 2; the magnetic encoder 7 is mounted on the end face of the driven wheel 4 facing the magnetic ring 9 and rotates relative to the fixed frame 2.
Those skilled in the art can design the specific structure of the fourth support according to the existing structure of the pan/tilt head to adapt to the existing pan/tilt head structure, which is not limited herein.
In the two embodiments, the magnet is a magnetic ring 9, a space is reserved for threading, and the magnetic encoder 7 and the magnetic ring 9 are arranged eccentrically.
Further, magnetic encoder 7 sets up in the outside of magnetic ring 9, further avoids influencing the threading.
Referring to fig. 4, the magnetic ring 9 may be a single pair of pole magnetic ring, i.e. the magnetic ring 9 has a pair of S-pole and N-pole. In order to improve the movement accuracy of the lens and the resolution of the entire head, the magnetic ring 9 is preferably a multi-pole magnetic ring, i.e. the magnetic ring 9 has a plurality of pairs of S poles and N poles, for example, referring to fig. 5, the magnetic ring 9 has five pairs of S poles and N poles. The embodiment of the utility model provides a do not restrict the quantity to the utmost point of magnetic ring 9.
The embodiment of the utility model provides a still provide a shooting device, it includes camera lens and cloud platform, and the speed reduction drive mechanism and the camera lens of cloud platform are connected.
Specifically, the embodiment of the utility model provides a shooting device can be applied to the security protection control, and the camera lens can be current camera, camera etc. does not do the restriction here.
The tripod head comprises a feedback adjusting mechanism, a fixing frame 2 and a speed reduction transmission mechanism, the speed reduction transmission mechanism comprises a transmission shaft 11, the transmission shaft 11 is provided with a first end which is in transmission connection with a motor and a second end which is in connection with a lens, and the transmission shaft 11 is arranged in a shaft hole 21 formed in the fixing frame 2 in a penetrating manner and can rotate relative to the fixing frame 2; the feedback adjusting mechanism comprises a magnetic encoder 7 and a magnet, one of the magnetic encoder 7 and the magnet is fixed at the first end of the transmission shaft 11, the other of the magnetic encoder 7 and the magnet is fixed on the fixing frame 2, and the magnetic encoder 7 and the magnet have a gap along the axial direction of the transmission shaft. The structure, function, and effect of the pan/tilt head provided in this embodiment are the same as those of the above embodiment, and the above embodiment may be specifically referred to, and are not described herein again.
The embodiment of the utility model provides a shooting device, its cloud platform sets up the first end at speed reduction drive mechanism's transmission shaft through one in magnetic encoder and the magnet with feedback adjustment mechanism, set up another in magnetic encoder and the magnet on the mount, magnetic encoder and magnet rotate relatively, magnetic encoder utilizes the turned angle of hall effect detection transmission shaft, whether accurate feedback camera lens rotates expected angular position, avoid speed reduction drive mechanism's assembly error, transmission error etc., compensate or reset the camera lens according to the feedback result, be favorable to improving the motion precision of camera lens, thereby improve the shooting quality.
In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (20)
1. A cloud platform is characterized by comprising a feedback adjusting mechanism, a fixed frame and a speed reduction transmission mechanism;
the speed reduction transmission mechanism comprises a transmission shaft, the transmission shaft is provided with a first end used for being in transmission connection with the motor and a second end used for being connected with the lens, and the transmission shaft penetrates through a shaft hole formed in the fixing frame and can rotate relative to the fixing frame;
the feedback adjusting mechanism comprises a magnetic encoder and a magnet, one of the magnetic encoder and the magnet is fixed at the first end of the transmission shaft, the other of the magnetic encoder and the magnet is fixed on the fixing frame, and a gap is formed between the magnetic encoder and the magnet along the axis direction of the transmission shaft.
2. A head according to claim 1, wherein said head further comprises a controller and a motor, said controller being electrically connected to both the drive circuit of said motor and to said magnetic encoder;
the magnetic encoder is used for detecting the variation of the magnetic field intensity when the magnetic encoder and the magnet rotate relatively, determining the actual angle displacement of the transmission shaft according to the variation of the magnetic field intensity and sending the actual angle displacement to the controller;
the controller is used for generating an expected angle displacement of the transmission shaft according to a control instruction, comparing the expected angle displacement with the actual angle displacement, and sending a control signal to the motor according to a comparison result so that the motor drives the transmission shaft to adjust the position of the lens.
3. A head according to claim 2, wherein said reduction gear mechanism comprises a driving wheel for connection to an output shaft of said motor, a driven wheel mounted on a first end of said drive shaft, and a drive belt drivingly connecting said driving wheel and said driven wheel.
4. A head according to claim 3, wherein said reduction gear mechanism further comprises a rotor and a bearing mounted in said axial bore; the transmission shaft and the rotating body are integrally arranged; the driven wheel is connected with the rotating body through the bearing, and the rotating body is used for connecting the lens.
5. A head according to claim 4, wherein said magnets are magnetic columns,
the holder also comprises a first bracket, one end of the first bracket is fixedly connected with the fixed frame, and the other end of the first bracket is provided with the magnetic column;
the magnetic encoder is arranged on the end face, facing the magnetic column, of the driven wheel, and the magnetic encoder and the magnetic column are coaxially arranged.
6. A head according to claim 5, wherein said first support comprises a first mounting plate on which said magnetic column is mounted, a connecting plate extending from an end of said first mounting plate towards said mounting bracket and a second mounting plate extending from an end of said connecting plate away from said first mounting plate, said second mounting plate being fixedly connected to said mounting bracket.
7. A head according to claim 6, wherein a first fixing portion is provided on a face of said first mounting plate facing said fixed mount, said first fixing portion being adapted to fix said magnetic column.
8. A head according to claim 7, wherein said magnetic cylinder is of cylindrical configuration; the first fixing part is a circular ring for accommodating the magnetic column.
9. A head according to claim 8, wherein said second mounting plate is provided with at least one first mounting hole;
the fixing frame is provided with a fixing seat, and the fixing seat is provided with a first fixing column fixedly connected with the first mounting hole.
10. A head according to any one of claims 5 to 9, wherein said head further comprises a first circuit board on which said magnetic encoder is integrated;
the end face of the driven wheel facing the magnetic column is provided with a mounting groove for fixing the first circuit board.
11. A holder according to claim 10, wherein said first circuit board is provided with at least one first fixing hole, and the bottom wall of said mounting slot is provided with at least one second fixing hole, and said second fixing holes correspond to said first fixing holes one to one;
the cloud platform still includes at least one first fastener, every first fastener all wears to establish and corresponds in first fixed orifices and the second fixed orifices to with first circuit board is fixed in the mounting groove.
12. A holder according to claim 4, wherein said holder further comprises a second support, one end of said second support being fixedly connected to said fixed frame, the other end of said second support being provided with said magnetic encoder;
the magnet is a magnetic column, the magnetic column is arranged on the end face, facing the magnetic encoder, of the driven wheel, and the magnetic column and the magnetic encoder are coaxially arranged.
13. A head according to claim 4, wherein said transmission shaft is a hollow shaft and said magnet is a magnetic ring;
the holder also comprises a third support, one end of the third support is fixedly connected with the end face of the driven wheel, and the other end of the third support is provided with the magnetic ring;
the fixed frame is provided with an installation part for installing the magnetic encoder;
the magnetic encoder and the magnetic ring are eccentrically arranged.
14. A head according to claim 13, wherein said third support comprises a first mounting ring, a retaining ring provided on said first mounting ring and a second mounting ring provided on said retaining ring, said first mounting ring, said retaining ring and said second mounting ring being coaxial and the outer diameter of said first mounting ring, of said retaining ring and of said second mounting ring decreasing in sequence;
the first mounting ring is fixedly connected with the end face of the driven wheel;
the magnetic ring is of a circular ring structure, and the magnetic ring is sleeved on the second mounting ring.
15. A head according to claim 14, wherein the end surface of said driven wheel facing said magnetic encoder is provided with at least one second mounting hole along its circumference, said first mounting ring is provided with at least one third mounting hole along its circumference, and said third mounting holes correspond one-to-one with said second mounting holes;
the holder further comprises at least one second fastener, and the second fastener penetrates through the second mounting hole and the corresponding third mounting hole so as to fix the first mounting ring on the end face, facing the magnetic encoder, of the driven wheel.
16. A head according to claim 13, wherein said head further comprises a second circuit board on which said magnetic encoder is integrated;
the second circuit board is provided with at least one second fixing hole, the fixing frame is provided with at least one second fixing column, the second fixing columns correspond to the second fixing holes one to one, and the second fixing columns penetrate through the second fixing holes so as to fix the second circuit board on the fixing frame.
17. A head according to claim 4, wherein said transmission shaft is a hollow shaft and said magnet is a magnetic ring;
the holder also comprises a fourth support, one end of the fourth support is fixedly connected with the fixed frame, and the other end of the fourth support is provided with the magnetic ring;
the magnetic encoder is arranged on the end face, facing the magnetic ring, of the driven wheel;
the magnetic encoder and the magnetic ring are eccentrically arranged.
18. A head according to any one of claims 13 to 17, wherein said magnetic encoder is arranged outside said magnetic ring.
19. A head according to any one of claims 13 to 17, wherein said magnetic rings are multi-pole magnetic rings.
20. A camera device, comprising a lens and a head as claimed in any one of claims 1 to 19, wherein the reduction gear mechanism of the head is coupled to the lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921072273.1U CN210141445U (en) | 2019-07-10 | 2019-07-10 | Cloud platform and shooting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921072273.1U CN210141445U (en) | 2019-07-10 | 2019-07-10 | Cloud platform and shooting device |
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| CN210141445U true CN210141445U (en) | 2020-03-13 |
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| CN201921072273.1U Active CN210141445U (en) | 2019-07-10 | 2019-07-10 | Cloud platform and shooting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112399041A (en) * | 2019-08-19 | 2021-02-23 | 杭州海康威视数字技术股份有限公司 | Video camera |
| WO2022000316A1 (en) * | 2020-06-30 | 2022-01-06 | 深圳市大疆创新科技有限公司 | Gimbal device, and photographing device |
| US11531251B2 (en) | 2020-03-16 | 2022-12-20 | Hanwha Techwin Co., Ltd. | Camera assembly and assembling method thereof |
-
2019
- 2019-07-10 CN CN201921072273.1U patent/CN210141445U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112399041A (en) * | 2019-08-19 | 2021-02-23 | 杭州海康威视数字技术股份有限公司 | Video camera |
| CN112399041B (en) * | 2019-08-19 | 2022-07-15 | 杭州海康威视数字技术股份有限公司 | Video camera |
| US11531251B2 (en) | 2020-03-16 | 2022-12-20 | Hanwha Techwin Co., Ltd. | Camera assembly and assembling method thereof |
| US11868037B2 (en) | 2020-03-16 | 2024-01-09 | Hanwha Techwin Co., Ltd. | Camera assembly and assembling method thereof |
| WO2022000316A1 (en) * | 2020-06-30 | 2022-01-06 | 深圳市大疆创新科技有限公司 | Gimbal device, and photographing device |
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