A smart camera based on brushless DC motor

Abstract

The present invention relates to a smart camera, and in particular to a smart camera based on a DC brushless motor. The device includes a bottom shell, a rotating seat, a bottom plate, and a support frame, etc.; the rotating seat is rotatably connected to the top of the bottom shell, the bottom plate is arranged on the inner wall of the bottom of the bottom shell, and the support frame is fixedly connected to the top of the bottom plate. When the smart camera is started, two DC brushless motors are driven to start, and the camera module is controlled to perform monitoring and recording. The output shaft of the DC brushless motor located on the support frame rotates forward or reversely, which drives the rotating seat to rotate forward or reversely, thereby allowing the camera module to perform 360-degree monitoring and recording of the surroundings of the smart camera.

Description

Technical Field

[0001] The invention relates to an intelligent camera, in particular to an intelligent camera based on a brushless DC motor. Background Art

[0002] Smart cameras are devices that convert optical image signals into electrical signals and record them. They convert light into electrical energy through camera devices to obtain video signals, which are amplified by pre-amplifier circuits, processed and adjusted by various circuits, and then sent to recording media such as video for recording. Brushless DC motors are composed of a motor body and a driver. They are a typical mechatronics product. Since brushless DC motors have a very wide speed regulation range, low noise, high efficiency, and can achieve certain "intelligent" operations, they can be used in smart cameras.

[0003] Current smart cameras can monitor the surrounding area 360 degrees without blind spots, but the viewing angle of the lens is mostly only 90 degrees. Although it can monitor the upper part, when the smart camera monitors directly below, part of the viewing angle will be blocked by its own body, resulting in the actual surveillance video not reaching 90 degrees. The monitoring range is smaller than the actual one, and the monitoring area is not comprehensive enough. Summary of the invention

[0004] In view of this, the present invention provides an intelligent camera based on a brushless DC motor, which can monitor and record the monitored area more comprehensively, thereby expanding the monitoring range.

[0005] The technical implementation scheme of the present invention is: an intelligent camera based on a DC brushless motor, including a bottom shell, a rotating seat, a bottom plate, a support frame, a rotating mechanism and a shifting mechanism, the rotating seat is rotatably connected to the top of the bottom shell, the bottom plate is fixedly connected to the bottom inner wall of the bottom shell, a control module is provided on the side surface of the bottom plate, the support frame is fixedly connected to the top of the bottom plate, the support frame is located in the bottom shell, the rotating mechanism is arranged on the support frame and connected to the rotating seat, and the shifting mechanism is arranged on the rotating mechanism.

[0006] Optionally, a fan-shaped groove is provided on an inner wall of one side of the rotating seat.

[0007] Optionally, the rotating mechanism includes a brushless DC motor, an electric slip ring, a guide sliding frame and a limiting sliding frame. A brushless DC motor is fixedly connected to the upper part of the support frame, and a brushless DC motor is also fixedly connected to the upper inner part of the rotating seat. Both of the brushless DC motors are electrically connected to a control module located on the bottom plate. The output shaft of the brushless DC motor located on the support frame is fixedly connected to the rotating seat. The electric slip ring is fixedly connected to the outer wall of the brushless DC motor located on the support frame, the guide sliding frame is fixedly connected to the output shaft of the brushless DC motor located on the rotating seat, and the limiting sliding frame is rotatably connected to the upper inner part of the rotating seat away from the guide sliding frame.

[0008] Optionally, a convex strip is provided on the position-limiting sliding frame, and the convex strip is slidably connected to the fan-shaped groove of the rotating seat.

[0009] Optionally, the shift mechanism includes a rotating shell, a compression spring, a rotating push rod, a contact rod and a camera module. A rotating shell is slidably connected to the guide sliding frame, and a rotating shell is also slidably connected to the limit sliding frame. A compression spring is connected between the rotating shell away from the limit sliding frame and the guide sliding frame. The rotating push rod is fixedly connected to the output shaft of the DC brushless motor located on the rotating seat. Two contact rods are fixedly connected to the inner side of the rotating shell located on the guide sliding frame, one of the contact rods is in contact with the rotating push rod, and a camera module is fixedly connected between the two rotating shells. The camera module is electrically connected to a control module located on the bottom plate.

[0010] Optionally, it also includes a limiting mechanism, which is arranged on one of the rotating shells, and includes a guide rod, a support spring, a connecting plate, a bracket and a movable spring. Two guide rods are fixedly connected to the inner side of the rotating shell on the guide sliding frame, a connecting plate is slidably connected between the two guide rods, the rotating push rod is in contact with the connecting plate, two support springs are connected between the rotating shell and the connecting plate of the guide sliding frame, the bracket is slidably connected to the connecting plate, the bracket is in contact with the guide sliding frame, and two movable springs are connected between the bracket and the connecting plate.

[0011] Optionally, the card frame is provided with a plurality of convex strips.

[0012] Optionally, a balancing mechanism is also included, which is arranged on the camera module, and includes a pulling rod, a guide limit frame, a fixed ring, a sliding weight and a connecting rod. The pulling rod is slidably connected to the camera module, the pulling rod is slidably connected to the rotating seat, the guide limit frame is fixedly connected to the support frame, the pulling rod passes through the guide limit frame, the fixed ring is fixedly connected to the pulling rod, the sliding weight is slidably connected to the guide limit frame, the lower end of the connecting rod is rotatably connected to the fixed ring, and the upper end of the connecting rod is rotatably connected to the sliding weight.

[0013] Optionally, it also includes a central stabilizing block and a supporting ring, wherein the central stabilizing block is rotatably connected to the inner side of the rotating seat, the central stabilizing block passes through a limiting sliding frame, two rotating shells and a camera module, and two supporting rings are slidably connected to the central stabilizing block, and both of the supporting rings are fixedly connected to the camera module.

[0014] Optionally, a counterweight block is further included, and two counterweight blocks are fixedly connected to the support frame, and the two counterweight blocks are symmetrically arranged.

[0015] The present invention has the following advantages:

[0016] 1. When the smart camera is started, it will drive the two brushless DC motors to start and control the camera module to monitor and record. The forward or reverse rotation of the output shaft of the brushless DC motor on the support frame will drive the rotating seat to rotate forward or reverse, so that the camera module can perform 360-degree monitoring and recording of the surroundings of the smart camera. The forward or reverse rotation of the output shaft of the brushless DC motor on the rotating seat will drive the guide sliding frame to rotate forward or reverse, and then drive the camera module to rotate forward or reverse, so that the camera module can monitor and record the upper and lower parts of the smart camera. The control module on the bottom plate will control the rotation of the rotating seat and the rotating shell by controlling the rotation of the output shafts of the two brushless DC motors, so as to monitor the monitoring area.

[0017] 2. When the convex strip of the limit sliding frame swings downward to the end of the fan-shaped groove of the rotating seat, the rotating push rod continues to rotate to push the contact rod to move away from the rotating seat, thereby driving the camera module to move away from the rotating seat. The movement of the camera module will no longer be blocked by the rotating seat, so that the camera module can monitor and record the area directly below the bottom shell, making the monitoring range of the smart camera wider and able to monitor and record the monitoring area more comprehensively.

[0018] 3. When the camera module moves away from the pulling rod, the center of gravity of the smart camera will shift with the movement of the camera module. At this time, the sliding weight moves away from the support frame, which will cause the center of gravity of the smart camera to shift away from the camera module, thereby balancing the center of gravity of the smart camera, and thus keeping the center of gravity of the smart camera in the bottom shell, so that the smart camera can monitor more stably when conducting more comprehensive monitoring; at the same time, when the camera module moves, the central stabilizing block remains stationary, so that the center of gravity of the camera module remains stationary, allowing the camera module to be more stable when moved out. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the second three-dimensional structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0022] Figure 4 It is a partial cross-sectional three-dimensional structural schematic diagram of the rotating mechanism and the shifting mechanism of the present invention.

[0023] Figure 5 It is a schematic diagram of a first partial three-dimensional structure of the rotating mechanism and the shifting mechanism of the present invention.

[0024] Figure 6 It is a partial cross-sectional three-dimensional structural schematic diagram of the rotating seat, the limiting sliding frame and the rotating shell of the present invention.

[0025] Figure 7 It is a schematic diagram of a partially cutaway separated three-dimensional structure of a rotating seat, a limiting sliding frame and a rotating shell of the present invention.

[0026] Figure 8 It is a schematic diagram of a second partial three-dimensional structure of the rotating mechanism and the shifting mechanism of the present invention.

[0027] Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0028] Fig.10 It is a partial three-dimensional structural schematic diagram of the rotating push rod, the connecting plate and the bracket of the present invention.

[0029] Fig.11 It is a partial cross-sectional three-dimensional structural schematic diagram of the rotating mechanism, the shifting mechanism and the balancing mechanism of the present invention.

[0030] Fig.12 It is a schematic cross-sectional three-dimensional structure diagram of the camera module and the pulling rod of the present invention.

[0031] Fig.13 It is a schematic diagram of the partial three-dimensional structure of the rotating mechanism and the balancing mechanism of the present invention.

[0032] Fig.14 It is a schematic diagram of the partial three-dimensional structure of the camera module, the central stabilizing block and the supporting ring of the present invention.

[0033] Fig.15 It is a schematic diagram of the three-dimensional structure of the central stabilizing block of the present invention.

[0034] Fig.16 It is a schematic diagram of the cross-sectional three-dimensional structure of the rotating seat of the present invention.

[0035] The markings of the components in the accompanying drawings are as follows: 1: bottom shell, 2: rotating seat, 3: bottom plate, 4: supporting frame, 61: DC brushless motor, 62: electric slip ring, 63: guide sliding frame, 64: limiting sliding frame, 71: rotating shell, 72: compression spring, 73: rotating push rod, 74: contact rod, 75: camera module, 91: guide rod, 92: supporting spring, 93: connecting plate, 94: bracket, 95: movable spring, 101: pulling rod, 102: guiding limiting frame, 103: fixing ring, 104: sliding weight, 105: connecting rod, 111: central stabilizing block, 112: supporting ring, 12: counterweight. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1

[0038] A smart camera based on a brushless DC motor, such as Figure 1-Figure 16 As shown, it includes a bottom shell 1, a rotating seat 2, a bottom plate 3, a support frame 4, a rotating mechanism and a shifting mechanism. The rotating seat 2 is rotatably connected to the top of the bottom shell 1, the bottom plate 3 is connected to the bottom inner wall of the bottom shell 1 by bolts, a control module is provided on the upper side of the bottom plate 3, the support frame 4 is connected to the top of the bottom plate 3 by bolts, the support frame 4 is located in the bottom shell 1, the rotating mechanism is arranged on the support frame 4 and connected to the rotating seat 2, and the shifting mechanism is arranged on the rotating mechanism.

[0039] A fan-shaped groove is provided on one inner wall of the rotating seat 2 .

[0040] The rotating mechanism includes a brushless DC motor 61, an electric slip ring 62, a guide slide frame 63 and a limit slide frame 64. The upper part of the support frame 4 is connected to a brushless DC motor 61 by bolts, and the upper inner part of the rotating seat 2 is also connected to a brushless DC motor 61 by bolts. The two brushless DC motors 61 are electrically connected to the control module located on the bottom plate 3. The output shaft of the brushless DC motor 61 located on the support frame 4 is fixedly connected to the rotating seat 2. The electric slip ring 62 is connected to the outer wall of the brushless DC motor 61 located on the support frame 4 by bolts. The guide slide frame 63 is connected to the output shaft of the brushless DC motor 61 located on the rotating seat 2 by bolts. The limit slide frame 64 is rotatably connected to the upper inner part of the rotating seat 2 away from the guide slide frame 63.

[0041] The position-limiting sliding frame 64 is provided with a convex strip, and the convex strip is slidably connected to the fan-shaped groove of the rotating seat 2 .

[0042] The shift mechanism includes a rotating shell 71, a compression spring 72, a rotating push rod 73, a contact rod 74 and a camera module 75. A rotating shell 71 is slidably connected to the guide sliding frame 63, and a rotating shell 71 is also slidably connected to the limiting sliding frame 64. A compression spring 72 is connected between the rotating shell 71 on the side away from the limiting sliding frame 64 and the guide sliding frame 63 through a hook. The rotating push rod 73 is bolted to the output shaft of the DC brushless motor 61 located on the rotating seat 2. Two contact rods 74 are bolted to the inner side of the rotating shell 71 located on the guide sliding frame 63, one of which is in contact with the rotating push rod 73. A camera module 75 is bolted between the two rotating shells 71, and the camera module 75 is electrically connected to the control module located on the base plate 3.

[0043] In actual operation, the user installs the bottom shell 1 horizontally at a high place, and then starts the smart camera. The control module on the bottom plate 3 will start and drive the two DC brushless motors 61 to start, and control the camera module 75 to monitor and record. The output shaft of the DC brushless motor 61 located on the support frame 4 rotates forward or reversely, which will drive the rotating seat 2 to rotate forward or reversely. The forward or reverse rotation of the rotating seat 2 will drive the guide sliding frame 63, the limit sliding frame 64, the rotating shell 71 and the camera module 75 to rotate together, so that the camera module 75 can perform 360-degree monitoring and recording of the surroundings of the smart camera. The output shaft of the DC brushless motor 61 located on the rotating seat 2 rotates forward or reversely, which will drive the guide sliding frame 63 and The rotating push rod 73 rotates forward or reversely together, and the forward or reverse rotation of the guide sliding frame 63 will drive one of the rotating shells 71 to rotate forward or reversely, and the forward or reverse rotation of one of the rotating shells 71 will drive the camera module 75 to rotate forward or reversely, and the forward or reverse rotation of the camera module 75 will drive the other rotating shell 71 to rotate forward or reversely, and the forward or reverse rotation of the other rotating shell 71 will drive the limiting sliding frame 64 to rotate forward or reversely, so that the camera module 75 can monitor and record the upper and lower parts of the smart camera, and the control module on the base plate 3 will control the rotation of the rotating seat 2 and the rotating shell 71 by controlling the rotation of the output shafts of the two brushless DC motors 61, so as to monitor the monitoring area.

[0044] When the convex strip of the limit sliding frame 64 swings downward to the end of the fan-shaped groove of the rotating seat 2, the rotating seat 2 will limit the convex strip of the limit sliding frame 64, so that the limit sliding frame 64 will no longer rotate. At this time, the rotating push rod 73 continues to rotate to push the contact rod 74 to move away from the rotating seat 2. The movement of the contact rod 74 will drive one of the rotating shells 71 to move along the guide sliding frame 63, and the compression spring 72 will be stretched. The movement of one of the rotating shells 71 will drive the camera module 75 to move. The movement of the camera module 75 will drive the other rotating shell 71 to move along the limit sliding frame 64. When the bottom shell 1 is moved, the viewing angle will no longer be blocked by the rotating seat 2, so that the camera module 75 can monitor and record the area directly below the bottom shell 1, so that the monitoring range of the smart camera is wider and the monitoring area can be monitored and recorded more comprehensively; when the limit sliding frame 64 rotates in the opposite direction, the rotating push rod 73 also rotates in the opposite direction, and the rotating push rod 73 no longer pushes the contact rod 74. The reset of the compression spring 72 will drive one of the rotating shells 71 to reset, and the reset of one of the rotating shells 71 will drive the contact rod 74 and the camera module 75 to reset, and the reset of the camera module 75 will drive the other rotating shell 71 to reset.

[0045] Example 2

[0046] On the basis of Example 1, Figure 4-Figure 10As shown, it also includes a limiting mechanism, which is arranged on one of the rotating shells 71. The limiting mechanism includes a guide rod 91, a support spring 92, a connecting plate 93, a bracket 94 and a movable spring 95. The inner side of the rotating shell 71 located on the guide sliding frame 63 is connected to two guide rods 91 by bolts, and a connecting plate 93 is slidably connected between the two guide rods 91. The rotating push rod 73 contacts the connecting plate 93. Two supporting springs 92 are connected between the rotating shell 71 and the connecting plate 93 of the guide sliding frame 63 by hooks. The support spring 92 is sleeved on the guide rod 91. The bracket 94 is slidably connected to the connecting plate 93. The bracket 94 contacts the guide sliding frame 63. Two movable springs 95 are connected between the bracket 94 and the connecting plate 93 by hooks, and both of the two movable springs 95 are sleeved on the bracket 94.

[0047] The bracket 94 is provided with a plurality of convex strips.

[0048] When the convex strip of the limit sliding frame 64 swings downward to the end of the fan-shaped groove of the rotating seat 2, one of the rotating shells 71 moves in the direction away from the rotating seat 2, which will drive the guide rod 91, the connecting plate 93 and the bracket 94 to move together. The bracket 94 will be continuously pushed by the guide sliding frame 63 and move in the direction away from the guide sliding frame 63. The movable spring 95 is continuously compressed. When one of the rotating shells 71 stops moving, the guide sliding frame 63 no longer squeezes the bracket 94. The reset of the movable spring 95 will drive the bracket 94 to reset. The reset of the bracket 94 will jam the guide sliding frame 63 to prevent the movable spring 95 from pulling the guide sliding frame 63 all the time. The output shaft of one of the DC brushless motors 61 is damaged; when the limit sliding frame 64 rotates in the opposite direction, the rotating push rod 73 also rotates in the opposite direction and squeezes the connecting plate 93 to move, the supporting spring 92 is compressed, the movement of the connecting plate 93 will drive the clamping frame 94 to move, and the movement of the clamping frame 94 will no longer jam the guide sliding frame 63. When one of the rotating shells 71 is reset, it will drive the guide rod 91, the connecting plate 93 and the clamping frame 94 to reset together, and then the rotating push rod 73 rotates forward and no longer squeezes the connecting plate 93. The reset of the supporting spring 92 will drive the connecting plate 93 and the clamping frame 94 to reset together, and the reset of the clamping frame 94 will jam the guide sliding frame 63 again.

[0049] Example 3

[0050] On the basis of Example 2, Figure 3-Figure 13As shown, a balancing mechanism is also included, which is arranged on the camera module 75. The balancing mechanism includes a pulling rod 101, a guide limit frame 102, a fixed ring 103, a sliding weight 104 and a connecting rod 105. The pulling rod 101 is slidably connected to the camera module 75, and the pulling rod 101 is slidably connected to the rotating seat 2. The pulling rod 101 is vertically arranged, and the guide limit frame 102 is connected to the support frame 4 by bolts. The pulling rod 101 passes through the guide limit frame 102, and the fixed ring 103 is connected to the pulling rod 101 by bolts. The sliding weight 104 is slidably connected to the guide limit frame 102, and the lower end of the connecting rod 105 is rotatably connected to the fixed ring 103, and the upper end of the connecting rod 105 is rotatably connected to the sliding weight 104.

[0051] When the camera module 75 moves in the direction away from the pull rod 101, the center of gravity of the smart camera will shift with the movement of the camera module 75. The movement of the camera module 75 in the direction away from the guide limit frame 102 will drive the pull rod 101 to move upward. The upward movement of the pull rod 101 will drive the fixing ring 103 to move upward. The upward movement of the fixing ring 103 will push the sliding weight block 104 to move away from the support frame 4 through the connecting rod 105. Since the sliding weight block 104 has a certain weight, the movement of the sliding weight block 104 in the direction away from the support frame 4 will The center of gravity of the smart camera is shifted away from the camera module 75, and the center of gravity of the smart camera is balanced, so that the center of gravity of the smart camera is always maintained in the bottom shell 1, so that the smart camera can monitor more stably when performing more comprehensive monitoring; the camera module 75 moves toward the direction close to the guide limit frame 102, which will drive the pulling rod 101 to reset downward, and the pulling rod 101 will reset downward, which will drive the fixing ring 103 to reset downward, and the fixing ring 103 will reset downward by pulling the sliding weight 104 through the connecting rod 105.

[0052] Example 4

[0053] On the basis of Example 3, Figure 11-Figure 15 As shown, it also includes a central stabilizing block 111 and a supporting ring 112. The central stabilizing block 111 is rotatably connected to the inner side of the rotating seat 2. The central stabilizing block 111 passes through the limiting sliding frame 64, two rotating shells 71 and the camera module 75. Two supporting rings 112 are slidably connected to the central stabilizing block 111, and the two supporting rings 112 are fixedly connected to the camera module 75.

[0054] When the camera module 75 rotates, it will drive the supporting ring 112 to rotate, and the rotation of the supporting ring 112 will drive the central stabilizing block 111 to rotate. The movement of the camera module 75 in the direction away from the guide limit frame 102 will drive the supporting ring 112 to move. At this time, the central stabilizing block 111 remains stationary, so that the center of gravity of the camera module 75 remains stationary, allowing the camera module 75 to be more stable when moving out; the movement of the camera module 75 in the direction close to the guide limit frame 102 will drive the supporting ring 112 to reset.

[0055] Example 5

[0056] On the basis of Example 4, Figure 3 As shown, a counterweight block 12 is also included. Two counterweight blocks 12 are connected to the support frame 4 by bolts, and the two counterweight blocks 12 are symmetrically arranged.

[0057] The two counterweights 12 can increase the weight of the support frame 4 , so that the bottom plate 3 can support the bottom shell 1 more stably.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smart camera based on a brushless DC motor, characterized in that: The invention comprises a bottom shell (1), a rotating seat (2), a bottom plate (3), a support frame (4), a rotating mechanism and a shifting mechanism, wherein the rotating seat (2) is rotatably connected to the top of the bottom shell (1), the bottom plate (3) is fixedly connected to the inner wall of the bottom of the bottom shell (1), a control module is provided on the upper side of the bottom plate (3), the support frame (4) is fixedly connected to the top of the bottom plate (3), the support frame (4) is located in the bottom shell (1), the rotating mechanism is arranged on the support frame (4) and connected to the rotating seat (2), and the shifting mechanism is arranged on the rotating mechanism; A fan-shaped groove is provided on an inner wall of one side of the rotating seat (2); The rotating mechanism comprises a brushless DC motor (61), an electric slip ring (62), a guide sliding frame (63) and a limit sliding frame (64); a brushless DC motor (61) is fixedly connected to the upper part of the support frame (4); a brushless DC motor (61) is also fixedly connected to the upper inner part of the rotating seat (2); both brushless DC motors (61) are electrically connected to a control module located on the bottom plate (3); an output shaft of the brushless DC motor (61) located on the support frame (4) is fixedly connected to the rotating seat (2); the electric slip ring (62) is fixedly connected to the outer wall of the brushless DC motor (61) located on the support frame (4); the guide sliding frame (63) is fixedly connected to the output shaft of the brushless DC motor (61) located on the rotating seat (2); and the limit sliding frame (64) is rotatably connected to the upper inner part of the rotating seat (2) away from the guide sliding frame (63); The limit sliding frame (64) is provided with a convex strip, and the convex strip is slidably connected to the fan-shaped groove of the rotating seat (2); The shift mechanism comprises a rotating shell (71), a compression spring (72), a rotating push rod (73), a contact rod (74) and a camera module (75); a rotating shell (71) is slidably connected to the guide sliding frame (63); a rotating shell (71) is also slidably connected to the limit sliding frame (64); a compression spring (72) is connected between the rotating shell (71) and the guide sliding frame (63) on a side away from the limit sliding frame (64); the rotating push rod (73) is fixedly connected to an output shaft of a DC brushless motor (61) located on the rotating seat (2); two contact rods (74) are fixedly connected to the inner side of the rotating shell (71) located on the guide sliding frame (63); one of the contact rods (74) contacts the rotating push rod (73); a camera module (75) is fixedly connected between the two rotating shells (71); and the camera module (75) is electrically connected to a control module located on the bottom plate (3).

2. The smart camera based on a brushless DC motor according to claim 1, characterized in that: The invention comprises a limit mechanism, wherein the limit mechanism is arranged on one of the rotating shells (71), and the limit mechanism comprises a guide rod (91), a support spring (92), a connecting plate (93), a bracket (94) and a movable spring (95). Two guide rods (91) are fixedly connected to the inner side of the rotating shell (71) located on the guide sliding frame (63), a connecting plate (93) is slidably connected between the two guide rods (91), the rotating push rod (73) is in contact with the connecting plate (93), two support springs (92) are connected between the rotating shell (71) and the connecting plate (93) located on the guide sliding frame (63), the bracket (94) is slidably connected to the connecting plate (93), the bracket (94) is in contact with the guide sliding frame (63), and two movable springs (95) are connected between the bracket (94) and the connecting plate (93).

3. The smart camera based on a brushless DC motor according to claim 2, characterized in that: The card frame (94) is provided with a plurality of convex strips.

4. The smart camera based on a brushless DC motor according to claim 3, characterized in that: The invention comprises a balancing mechanism, which is arranged on a camera module (75). The balancing mechanism comprises a pulling rod (101), a guide limit frame (102), a fixed ring (103), a sliding weight (104) and a connecting rod (105). The pulling rod (101) is slidably connected to the camera module (75), the pulling rod (101) is slidably connected to a rotating seat (2), the guiding limit frame (102) is fixedly connected to a supporting frame (4), the pulling rod (101) passes through the guiding limit frame (102), the fixed ring (103) is fixedly connected to the pulling rod (101), the sliding weight (104) is slidably connected to the guiding limit frame (102), the lower end of the connecting rod (105) is rotatably connected to the fixed ring (103), and the upper end of the connecting rod (105) is rotatably connected to the sliding weight (104).

5. The smart camera based on a brushless DC motor according to claim 4, characterized in that: The invention comprises a central stabilizing block (111) and a supporting ring (112); the central stabilizing block (111) is rotatably connected to the inner side of a rotating seat (2); the central stabilizing block (111) passes through a limit sliding frame (64), two rotating shells (71) and a camera module (75); two supporting rings (112) are slidably connected to the central stabilizing block (111); and the two supporting rings (112) are fixedly connected to the camera module (75).

6. The smart camera based on a brushless DC motor according to claim 5, characterized in that: It comprises a counterweight block (12), two counterweight blocks (12) are fixedly connected to the support frame (4), and the two counterweight blocks (12) are symmetrically arranged.

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