A short play effect camera electric cloud platform control system

Abstract

The utility model relates to digital hand draws equipment technical field especially, a short play system of making use of camera electrically operated cloud platform control system, including handheld controller, touch -control panel and cloud platform receiving end, handheld controller contains controller main part, its front surface is equipped with magnetic attraction interface panel, inside has six -axis sensor module, main control unit and wireless transmitting module, magnetic attraction interface contains four permanent magnets and six spring needle contact, touch -control panel back surface is equipped with magnetic attraction butt joint board, front surface has touch -control display screen, magnetic attraction butt joint structure contains polarity corresponding permanent magnet and metal contact, still include panel control unit, independent power supply and communication module. Cloud platform receiving end includes wireless receiving module, signal analysis circuit and double -way motor drive circuit. Main control unit can detect touch -control panel connection state and switch mode. The system realizes cloud platform nimble control, gives consideration to portability and control accuracy, satisfies short play shooting in multiple scene camera posture adjustment demand.

Description

Technical Field

[0001] This utility model relates to the field of film and television equipment control technology, specifically to a motorized pan-tilt control system for a camera used in short drama production. Background Technology

[0002] With the rapid development of the short video and short drama industry, the demand for efficient and flexible shooting equipment is increasing. Motorized pan-tilt heads, as important auxiliary equipment for cameras, enable horizontal rotation and tilt adjustment, and are widely used in short drama shooting, live streaming, vlog production, and other scenarios. Traditional motorized pan-tilt heads are mainly controlled via wired remote controls or apps. Wired remote controls use physical buttons and joysticks to control the pan-tilt head's movement, offering intuitive operation but limited by cable length. In recent years, some manufacturers have begun exploring motion-sensing control technology, using sensors such as gyroscopes to detect the controller's tilt angle and mapping human movements to pan-tilt head motion, improving the naturalness of control. However, most existing pan-tilt control systems use a single control method, making it difficult to switch flexibly between different shooting scenarios. Furthermore, most products require manual operation when switching modes, increasing complexity and limiting the work efficiency of short drama shooting teams.

[0003] Existing motorized gimbal control systems suffer from the following technical shortcomings: First, the control methods are limited and inconvenient to switch between. Traditional remote controls only support button or joystick operation, lacking advanced functions such as trajectory drawing. While mobile app control offers rich features, it requires carrying an additional phone or tablet, increasing the equipment's burden. Motion control, though natural to use, lacks precision and struggles with fine adjustments. Users must frequently switch control devices or manually change modes for different shooting needs, making operation cumbersome. Second, multi-device collaboration is difficult. When simultaneous use of motion control and touch operation is required, existing systems typically require two independent devices, each occupying its own communication frequency band, leading to signal interference and hindering intelligent collaboration between devices. Third, portability is poor. Carrying multiple independent controllers increases equipment size and weight, hindering outdoor shooting and rapid scene transitions. Fourth, mode recognition is not intelligent. Existing products require manual button presses or menu access to switch control modes, which is time-consuming and prone to errors, affecting shooting continuity and efficiency, and failing to meet the demands of short drama shooting for rapid response and flexible control. Utility Model Content

[0004] The purpose of this utility model is to provide a motorized pan-tilt control system for cameras used in short drama production, so as to solve the technical problems of existing pan-tilt control systems, such as the inability to flexibly switch between motion control and touch operation, the cumbersome manual mode switching operation, and the difficulty of multi-device coordination.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model includes:

[0006] The handheld controller includes: a controller body with a magnetic interface panel on its front; a six-axis sensor module installed inside the controller body for detecting the controller's tilt angle and acceleration, the six-axis sensor module including a three-axis gyroscope and a three-axis accelerometer; a magnetic interface on the magnetic interface panel, including four permanent magnets and six spring pin contacts, the four permanent magnets arranged in NSNS polarity, and the six spring pin contacts including two power supply pins, two data communication pins, one connection detection pin, and one grounding pin; a main control unit electrically connected to the six-axis sensor module and the magnetic interface, the main control unit including an MCU chip, signal processing circuitry, and mode switching circuitry; and a wireless transmission module electrically connected to the main control unit for sending control signals to the gimbal receiver.

[0007] The touch tablet includes: a tablet body with a magnetic docking plate on the back; a touch display screen on the front of the tablet body for receiving user touch input; a magnetic docking structure on the magnetic docking plate, comprising four permanent magnets and six metal contacts, wherein the polarity of the four permanent magnets corresponds to the polarity of the permanent magnets on the handheld controller, and the six metal contacts correspond one-to-one with the six spring pin contacts on the handheld controller; a tablet control unit electrically connected to the touch display screen and the magnetic docking structure; an independent power supply module, including a lithium battery and a charging management circuit, receiving charging current through the power supply pins of the magnetic docking structure; and an independent communication module for independently connecting to a gimbal receiver when the touch tablet is separated from the handheld controller.

[0008] The gimbal receiver includes: a wireless receiving module for receiving control signals sent by a handheld controller or touch tablet; a signal parsing circuit electrically connected to the wireless receiving module for parsing the received control signals and extracting control parameters; and a dual-motor drive circuit electrically connected to the signal parsing circuit, including a horizontal motor drive unit and a pitch motor drive unit for driving the horizontal and pitch motors according to the control parameters.

[0009] The above technical solution includes a connection detection circuit in the main control unit. The connection detection circuit monitors the level of the connection detection pin of the magnetic interface in real time. When a low level is detected for more than a preset time threshold, it is determined that the touch panel has been connected. When a high level is detected for more than a preset time threshold, it is determined that the touch panel has been disconnected.

[0010] The mode switching circuit includes a first relay and a second relay. The first relay controls the signal path between the six-axis sensor module and the main control unit, and the second relay controls the signal path between the data communication pins of the magnetic interface and the main control unit. When the connection detection circuit determines that the touch panel is connected, the first relay disconnects and the second relay closes; when the connection detection circuit determines that the touch panel is disconnected, the first relay closes and the second relay disconnects. Using the above technical solution, the signal processing circuit includes:

[0011] The analog signal conditioning unit, including a low-pass filter and a signal amplifier, is used to filter out the high-frequency jitter signal output by the six-axis sensor module. The signal amplifier amplifies the filtered signal to a voltage range that the MCU can recognize.

[0012] The comparator array unit includes five sets of voltage comparators, which are used to convert the tilt angle analog voltage signal output by the six-axis sensor module into five-level digital speed signals. The reference voltage of the five sets of voltage comparators is set by five adjustable resistors respectively.

[0013] The encoding output unit encodes the five-speed digital signals into three-bit binary signals and outputs them to the MCU chip.

[0014] Using the above technical solution, the functional allocation of the six spring pin contacts of the magnetic interface is as follows:

[0015] The first and second pins are power supply pins, which are connected to the power module of the handheld controller to power and charge the touch tablet.

[0016] The third and fourth pins are data communication pins, which are connected to the bus interface of the main control unit. The third pin is the SDA data line and the fourth pin is the SCL clock line.

[0017] The fifth pin is the connection detection pin, which is pulled down to a low level when the magnetic interface is connected; the sixth pin is the ground pin, which is connected to the common ground of the handheld controller and the touch tablet.

[0018] The magnetic docking structure in the above-mentioned technical solution further includes:

[0019] A metal positioning ring is positioned at the center of the magnetic docking plate.

[0020] The plastic guide post is located in the center of the magnetic interface panel. When the touch tablet is close to the handheld controller, the plastic guide post inserts into the metal positioning ring to achieve initial alignment.

[0021] The magnetic attraction of the four permanent magnets and the mechanical guiding effect of the plastic guide post and the metal positioning ring together ensure that the six spring pin contacts are precisely aligned with the six metal contacts.

[0022] The independent communication module in the above technical solution includes:

[0023] Bluetooth chip;

[0024] The communication mode switching circuit includes a single-pole double-throw switch. The common terminal of the single-pole double-throw switch is connected to the tablet control unit, the first contact is connected to the data communication pin of the magnetic docking structure, and the second contact is connected to the Bluetooth chip.

[0025] The automatic mode detection unit connects the connection detection pin with the magnetic docking structure and the communication mode switching circuit. When the connection detection pin is detected to be high, the single-pole double-throw switch is automatically switched to the second contact to enable Bluetooth communication. When the connection detection pin is detected to be low, the single-pole double-throw switch is automatically switched to the first contact to enable bus communication.

[0026] The dual-motor drive circuit in the above-mentioned technical solution further includes:

[0027] An overcurrent protection unit is installed at the power input terminals of the horizontal motor drive unit and the pitch motor drive unit. When the motor current is detected to exceed the limit, the motor power supply is automatically cut off.

[0028] The limit detection unit includes four photoelectric switches, which are respectively installed at the horizontal left limit, horizontal right limit, pitch upper limit and pitch lower limit positions of the gimbal receiver. When any photoelectric switch is triggered, a limit signal is sent to the signal analysis circuit to stop the motor drive in the corresponding direction.

[0029] The position feedback unit includes two rotary encoders, which are respectively installed on the output shafts of the horizontal motor and the pitch motor. They feed back the actual rotation angle of the motor to the signal analysis circuit to achieve closed-loop position control.

[0030] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0031] This invention achieves seamless integration of motion control and touch operation through a magnetic detachment structure, significantly improving the flexibility and convenience of gimbal control. First, the magnetic interface adopts an integrated data and power supply design, simultaneously achieving charging and data transmission through six spring contacts. The touch panel can be attached or detached at any time according to shooting needs, avoiding the inconvenience of carrying multiple independent controllers. Second, the connection detection circuit and mode switching circuit enable automatic identification and switching of control modes. When the touch panel is magnetically connected, the system automatically switches from motion mode to touch mode; after detachment, it automatically reverts to motion mode, eliminating the need for manual operation and solving the problems of cumbersome mode switching and easy misoperation in existing technologies. Third, the relay interlocking mechanism ensures that the motion signal path and touch signal path do not work simultaneously, fundamentally avoiding gimbal jitter or malfunctions caused by conflict between the two control signals. Fourth, the touch panel has a built-in independent power supply and communication module, and can be used as an independent remote control after detachment, expanding the operating distance and usage scenarios. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] Figure 1 This is a schematic diagram illustrating the principle of an electric pan-tilt control system for a camera used in short drama production according to this utility model.

[0034] Figure 2 This is the electrical schematic diagram of the magnetic interface circuit of this utility model;

[0035] Figure 3 This is the electrical schematic diagram of the mode switching circuit of this utility model.

[0036] In the diagram: 1. Handheld controller; 11. Main control unit; 12. Six-axis sensor module; 13. Magnetic interface; 14. Wireless transmission module; 2. Touch panel; 21. Touch display screen; 22. Panel control unit; 23. Magnetic docking structure; 24. Independent communication module; 3. Gimbal receiver; 31. Wireless receiving module; 32. Signal analysis circuit; 33. Dual-channel motor drive circuit. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to embodiments:

[0038] Example 1

[0039] This embodiment provides a motorized pan-tilt control system for a camera used in short drama production, comprising three parts: a handheld controller 1, a touch panel 2, and a pan-tilt receiver 3.

[0040] The main body of the handheld controller 1 is made of ABS engineering plastic injection molding, with overall dimensions of 150mm × 80mm × 35mm and a weight of approximately 180g. A magnetic interface panel 13 is located in the center of the front of the controller body. This panel is made of stainless steel and has an anodized surface.

[0041] The six-axis sensor module 12 uses an MPU6050 chip and is installed on the PCB motherboard inside the controller body, communicating with the main control unit 11 via a bus interface. This sensor module can simultaneously detect three-axis acceleration and three-axis angular velocity. The acceleration measurement range is selectable from ±2g to ±16g, and the angular velocity measurement range is selectable from ±250° / s to ±2000° / s. In this embodiment, the acceleration range is set to ±4g, the angular velocity range is set to ±500° / s, and the sampling frequency is set to 100Hz.

[0042] The magnetic interface 13 is located on the panel of the magnetic interface 13 and includes four neodymium iron boron permanent magnets, each 8mm in diameter and 3mm thick, arranged in a square layout with sides of 25mm according to NSNS polarity. The six spring-loaded pin contacts are made of gold-plated beryllium copper, with a spring travel of 1.5mm and a contact resistance of less than 30mΩ. The first and second pins are power supply pins, outputting a stable 5V voltage with a maximum output current of 2A; the third and fourth pins are bus data communication pins, carrying SDA data signals and SCL clock signals respectively, with a communication rate of 400kHz; the fifth pin is a connection detection pin, connected to a 3.3V power supply through a 10kΩ pull-up resistor; and the sixth pin is a common ground pin.

[0043] The main control unit 11 uses an STM32F103C8T6 microcontroller with a working frequency of 72MHz. The low-pass filter in the signal processing circuit uses a second-order Butterworth topology with a cutoff frequency set to 4Hz, effectively filtering out high-frequency noise generated by minor hand tremors. The comparator array unit uses five LM393 voltage comparators, with reference voltages set to 0.5V, 1.2V, 1.9V, 2.6V, and 3.3V via precision multi-turn potentiometers, corresponding to five rotation speeds. The mode switching circuit uses two HK4100F miniature relays with a coil drive voltage of 5V and a contact capacity of 3A.

[0044] The wireless transmission module 14 uses the nRF24L01+ chip, operates at a frequency of 2.4GHz in the ISM band, has a data transmission rate of 2Mbps, a transmission power of 0dBm, and an effective communication distance of up to 50 meters in indoor environments.

[0045] The touch tablet 2 features a 7-inch capacitive touchscreen display with a resolution of 1024×600 and supports five-point touch. The tablet's main body is also made of ABS material, with overall dimensions of 180mm×110mm×12mm and a weight of approximately 220g.

[0046] The magnetic docking structure 23 is located on the magnetic docking plate on the back of the flat panel. The positions and polarities of the four permanent magnets correspond perfectly with those of the handheld controller 1, ensuring automatic alignment during magnetic attraction. Six metal contacts are made of gold-plated copper sheets, corresponding one-to-one with the spring pin contacts. The metal positioning ring is made of stainless steel, with an inner diameter of 10mm, and is fixed to the center of the magnetic docking plate. The magnetic interface 13 of the handheld controller 1 has a plastic guide post at its center, with an outer diameter of 9.2mm and a height of 5mm. Made of polyoxymethylene, it has good wear resistance and self-lubricating properties.

[0047] The tablet control unit 22 uses an Allwinner A33 quad-core processor and runs a customized Android system. The control interface on the touch display 21 provides interactive elements such as a virtual joystick, preset position buttons, and a speed slider.

[0048] The independent power supply module is equipped with a 3.7V 4000mAh lithium polymer battery. The charging management circuit uses a TP4056 chip, which supports 1A fast charging. It takes about 4 hours to fully charge and can operate independently for about 6 hours.

[0049] The Bluetooth chip in the independent communication module 24 is a CC2541, which supports the Bluetooth 4.0 BLE protocol. The single-pole double-throw switch in the communication mode switching circuit uses a TS5A3159 analog switch chip, with a switching time of less than 10ns, ensuring seamless switching of communication modes.

[0050] The gimbal receiver 3 is mounted on the gimbal's mechanical structure and directly connected to the horizontal and vertical motors. The wireless receiver module 31 also uses the nRF24L01+ chip and works in pair with the handheld controller 1. It is also equipped with a CC2541 Bluetooth chip to receive Bluetooth control signals sent when the touchscreen tablet 2 is detached.

[0051] The instruction decoding unit and parameter mapping unit of the signal parsing circuit 32 are implemented by an STM32F103RCT6 microcontroller. The speed-PWM duty cycle mapping table is stored in the microcontroller's Flash memory. The five speeds correspond to duty cycles of 10%, 30%, 50%, 70%, and 90%, respectively, and the PWM carrier frequency is 20kHz.

[0052] The dual-channel motor drive circuit 33 uses two TB6612FNG dual H-bridge driver chips, with a single-channel continuous drive current of 1.2A and a peak current of 3.2A. The overcurrent protection unit has a 0.1Ω sampling resistor connected in series at the power input terminal. The current sampling signal is amplified by an LM358 operational amplifier and then sent to a comparator. The threshold is set to the corresponding 2.5A motor current. When triggered, the motor power supply is cut off through a MOSFET.

[0053] The limit detection unit uses four EE-SX671 photoelectric switches, which are respectively installed at the horizontal left turn limit, horizontal right turn limit, pitch up limit, and pitch down limit positions of the gimbal's mechanical structure. The position feedback unit uses two EC11 incremental rotary encoders with 20 pulses per revolution. Through a quadruple frequency circuit, 80 counting pulses per revolution can be obtained, achieving an angle resolution of 4.5 degrees.

[0054] The system works as follows:

[0055] After the system is powered on, the connection detection circuit of the main control unit 11 continuously monitors the voltage level of the fifth pin (connection detection pin) of the magnetic interface 13. When the touch panel 2 is separated from the handheld controller 1, the connection detection pin remains at a high level through a pull-up resistor; when the touch panel 2 approaches and magnetically connects, the corresponding metal contact on the side of the touch panel 2 pulls the connection detection pin down to a low level. The main control unit 11 determines that the touch panel 2 is connected when it detects a low level that lasts for more than 50ms, and determines that the touch panel 2 is separated when it detects a high level that lasts for more than 50ms. This delay design effectively avoids false judgments caused by voltage level fluctuations at the moment of contact.

[0056] When the touch panel 2 is connected, the mode switching circuit controls the first relay to open and the second relay to close. At this time, the signal path between the six-axis sensor module 12 and the main control unit 11 is cut off, and the signal path between the data communication pin of the magnetic interface 13 and the main control unit 11 is opened. The system enters the touch input mode, and the user sends control commands through the virtual joystick and buttons on the touch display screen 21. The commands are transmitted to the main control unit 11 via the bus, and then sent to the gimbal receiver 3 by the wireless transmission module 14.

[0057] When the touch panel 2 is detached, the first relay flashes and the second relay deactivates, and the system enters the motion input mode. The six-axis sensor module 12 detects the tilt angle of the handheld controller 1 in real time. The output analog voltage signal is filtered by a low-pass filter to remove high-frequency jitter, and then converted into a five-level digital speed signal by a comparator array. The encoding output unit encodes it into a three-bit binary signal for the main control unit 11 to read and send.

[0058] At the same time, the automatic mode detection unit of the touch panel 2 detects that the connection detection pin is at a high level and automatically switches the single-pole double-throw switch of the communication mode switching circuit to the Bluetooth chip. The touch panel 2 can communicate independently with the gimbal receiver 3 via Bluetooth to realize the dual-device collaborative control function.

[0059] After receiving the control signal, the wireless receiving module 31 of the gimbal receiver 3 extracts the control command type and speed level from the signal parsing circuit 32. The parameter mapping unit queries the speed-PWM duty cycle mapping table to generate the corresponding PWM control signal, driving the horizontal or pitch motor to rotate at the specified speed. The rotary encoder of the position feedback unit collects the motor rotation angle in real time, compares it with the target angle to form a closed-loop control, ensuring the positioning accuracy of the gimbal. When the motor rotation triggers any limit photoelectric switch, the system immediately stops the drive in the corresponding direction to protect the mechanical structure from damage.

[0060] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A short play actuation camera motorized head control system, characterized by, include: A handheld controller (1) includes: a controller body, on the front of which is provided a magnetic interface (13) panel; a six-axis sensor module (12), installed inside the controller body, used to detect the tilt angle and acceleration of the controller, the six-axis sensor module (12) including a three-axis gyroscope and a three-axis accelerometer; a magnetic interface (13), provided on the magnetic interface (13) panel, including four permanent magnets and six spring pin contacts, the four permanent magnets arranged according to the polarity of NSNS, the six spring pin contacts including two power supply pins, two data communication pins, one connection detection pin and one grounding pin; a main control unit (11), electrically connected to the six-axis sensor module (12) and the magnetic interface (13), the main control unit (11) including an MCU chip, a signal processing circuit and a mode switching circuit; and a wireless transmission module (14), electrically connected to the main control unit (11), used to send control signals to the gimbal receiver (3); The touch panel (2) includes: a panel body with a magnetic docking plate on the back; a touch display screen (21) on the front of the panel body for receiving touch input from the user; a magnetic docking structure (23) on the magnetic docking plate, including four permanent magnets and six metal contacts, the polarity of the four permanent magnets corresponding to the polarity of the permanent magnets of the handheld controller (1), and the six metal contacts corresponding one-to-one with the six spring pin contacts of the handheld controller (1); a panel control unit (22) electrically connected to the touch display screen (21) and the magnetic docking structure (23); an independent power supply module including a lithium battery and a charging management circuit, receiving charging current through the power supply pins of the magnetic docking structure (23); and an independent communication module (24) for independently connecting to the gimbal receiver (3) when the touch panel (2) is separated from the handheld controller (1). The gimbal receiver (3) includes: a wireless receiving module (31) for receiving control signals sent by the handheld controller (1) or the touch tablet (2); a signal parsing circuit (32) electrically connected to the wireless receiving module (31) for parsing the received control signals and extracting control parameters; and a dual-path motor drive circuit (33) electrically connected to the signal parsing circuit (32), including a horizontal motor drive unit and a pitch motor drive unit for driving the horizontal motor and the pitch motor according to the control parameters.

2. The electric pan-tilt control system for a camera used in short drama production according to claim 1, characterized in that: The main control unit (11) also includes a connection detection circuit, which monitors the level of the connection detection pin of the magnetic interface (13) in real time. When a low level is detected for a continuous period of more than a preset time threshold, it is determined that the touch panel (2) has been connected. When a high level is detected for a continuous period of more than a preset time threshold, it is determined that the touch panel (2) has been disconnected. The mode switching circuit includes a first relay and a second relay. The first relay controls the signal path between the six-axis sensor module (12) and the main control unit (11). The second relay controls the signal path between the data communication pin of the magnetic interface (13) and the main control unit (11). When the connection detection circuit determines that the touch panel (2) is connected, the first relay is disconnected and the second relay is closed. When the connection detection circuit determines that the touch panel (2) is disconnected, the first relay is closed and the second relay is disconnected.

3. The electric pan-tilt control system for a camera used in short drama production according to claim 1, characterized in that: The signal processing circuit includes: The analog signal conditioning unit includes a low-pass filter and a signal amplifier, which are used to filter out the high-frequency jitter signal output by the six-axis sensor module (12). The signal amplifier amplifies the filtered signal to a voltage range that the MCU can recognize. The comparator array unit includes five sets of voltage comparators, which are used to convert the tilt angle analog voltage signal output by the six-axis sensor module (12) into five-level digital speed signals. The reference voltage of the five sets of voltage comparators is set by five adjustable resistors respectively. The encoding output unit encodes the five-level digital speed signals into three-bit binary signals and outputs them to the MCU chip.

4. The electric pan-tilt control system for a camera used in short drama production according to claim 1, characterized in that: The six spring pin contacts of the magnetic interface (13) are functionally assigned as follows: the first and second pins are power supply pins, which are connected to the power module of the handheld controller (1) to supply power and charge the touch tablet (2); The third and fourth pins are data communication pins, which are connected to the bus interface of the main control unit (11). The third pin is the SDA data line and the fourth pin is the SCL clock line. The fifth pin is a connection detection pin. When the magnetic interface (13) is connected, the connection detection pin is pulled down to a low level. The sixth pin is a grounding pin, which is connected to the common ground of the handheld controller (1) and the touch tablet (2).

5. The electric pan-tilt control system for a camera used in short drama production according to claim 1, characterized in that: The magnetic attraction docking structure (23) also includes: A metal positioning ring is positioned at the center of the magnetic docking plate; A plastic guide post is set at the center of the magnetic interface (13) panel. When the touch panel (2) is close to the handheld controller (1), the plastic guide post is inserted into the metal positioning ring to achieve initial alignment. The magnetic attraction of the four permanent magnets and the mechanical guiding effect of the plastic guide post and the metal positioning ring together ensure that the six spring pin contacts are precisely aligned with the six metal contacts.

6. The electric pan-tilt control system for a camera used in short drama production according to claim 1, characterized in that: The independent communication module (24) includes: Bluetooth chip; The communication mode switching circuit includes a single-pole double-throw switch, the common terminal of which is connected to the tablet control unit (22), the first contact is connected to the data communication pin of the magnetic docking structure (23), and the second contact is connected to the Bluetooth chip; The automatic mode detection unit is electrically connected to the connection detection pin of the magnetic docking structure (23) and the communication mode switching circuit. When the connection detection pin is detected to be at a high level, the single-pole double-throw switch is automatically switched to the second contact to enable Bluetooth communication. When the connection detection pin is detected to be at a low level, the single-pole double-throw switch is automatically switched to the first contact to enable bus communication.

7. The electric pan-tilt control system for a camera used in short drama production according to claim 1, characterized in that: The dual-path motor drive circuit (33) also includes: An overcurrent protection unit is installed at the power input terminals of the horizontal motor drive unit and the pitch motor drive unit. When the motor current is detected to exceed the limit, the motor power supply is automatically cut off. The limit detection unit includes four photoelectric switches, which are respectively installed at the horizontal left limit, horizontal right limit, pitch upper limit and pitch lower limit positions of the gimbal receiver (3). When any photoelectric switch is triggered, a limit signal is sent to the signal analysis circuit (32) to stop the motor drive in the corresponding direction. The position feedback unit includes two rotary encoders, which are respectively installed on the output shafts of the horizontal motor and the pitch motor, and feed back the actual rotation angle of the motor to the signal analysis circuit (32) to realize closed-loop position control.

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