A binocular monitoring camera control circuit supporting long and short focal lengths

Abstract

The utility model discloses a kind of binocular monitoring camera control circuit supporting long focus and short focus, which control circuit includes main control circuit;Adopt MIPI interface communication between first image sensor circuit and second image sensor circuit by main control circuit respectively, ensure that first image sensor circuit and second sensor circuit can independently collect, synchronous output, support binocular picture simultaneous display or switching use, improve the flexibility and information integrity of monitoring. Short focus lens cooperates with large field angle design, which can realize overall coverage of monitoring area; while long focus lens is used to capture details in the distance, and the combination of the two realizes "both see whole and clear". The driving circuit communicates with the main control circuit through I 2 C protocol, and drives long focus lens to rotate in horizontal and vertical directions, realizes angle adjustment under remote control, so that users can flexibly select the area of interest, and improve the accuracy and practicality of remote monitoring.

Description

Technical Field

[0001] This utility model relates to the field of surveillance camera technology, specifically to a control circuit for a binocular surveillance camera that supports both telephoto and short-focus lenses. Background Technology

[0002] With the acceleration of urbanization and the continuous improvement of security demands, surveillance cameras are increasingly widely used in public safety, traffic management, industrial production, and other fields. As a core device of modern security systems, the main function of surveillance cameras is to effectively monitor and record specific areas through video capture. Currently, the vast majority of surveillance cameras on the market use fixed-focus lenses, meaning that their field of view (FOV) remains fixed after installation and cannot be dynamically adjusted according to actual monitoring needs.

[0003] Fixed-focus lenses are mainly divided into short-focal-length lenses (wide-angle lenses) and long-focal-length lenses (telephoto lenses) based on their focal length. These two types of lenses have different characteristics in their application scenarios: Short-focal-length lenses have a wide field of view, covering a large monitoring area and are suitable for scenarios requiring a global view, such as squares and parking lot entrances. However, due to their short imaging distance, they are less capable of capturing details of distant targets, resulting in reduced image clarity and making it difficult to meet the needs of identifying or obtaining evidence from distant targets.

[0004] Telephoto lenses offer higher spatial resolution, enabling them to capture clearer images of targets at greater distances, making them suitable for applications requiring detailed information such as license plates and faces. However, their narrower field of view limits the monitoring range, potentially leading to a "seeing the trees but not the forest" situation, making it difficult to grasp changes in the overall environment.

[0005] Therefore, a persistent and irreconcilable contradiction exists in the application of traditional fixed-focus lenses: how to simultaneously achieve large-scale monitoring and high-definition identification under limited hardware conditions. This limitation not only affects the practicality of the monitoring system but also restricts the accuracy and comprehensiveness of intelligent analysis algorithms (such as behavior recognition and anomaly detection). Utility Model Content

[0006] To address the shortcomings and deficiencies of existing technologies, this invention provides a control circuit for a binocular surveillance camera that supports both telephoto and short-focal-length lenses, enabling simultaneous wide-area monitoring and high-definition recognition.

[0007] To achieve the above objectives, the present invention provides a binocular surveillance camera control circuit supporting both telephoto and short-focus lenses. The binocular surveillance camera control circuit includes a main control circuit, a short-focus lens and a telephoto lens for capturing peripheral images, a first image sensor circuit, a second image sensor circuit, a drive circuit for driving the telephoto camera to rotate, a power input terminal, a power supply circuit, and a WIFI module. The power input terminal is electrically connected to the input terminal of the power supply circuit, and the output terminal of the power supply circuit is electrically connected to the main control circuit. The main control circuit and the WIFI module are connected via a USB interface. The first and second image sensor circuits are both connected to the main control circuit via a MIPI interface. The first image sensor circuit is electrically connected to the short-focus lens, and the second image sensor circuit is electrically connected to the telephoto lens. The input terminal of the drive circuit is connected to the main control circuit via the I²C protocol, and the output terminal of the drive circuit is electrically connected to the second image sensor. An antenna is soldered onto the WIFI module.

[0008] Further; the main control circuit includes a main control chip, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a first resistor, a second resistor, a third resistor, and a fourth resistor; the 94th pin of the main control chip is connected to a 3.3V power supply voltage; one end of the first capacitor is grounded, and the other end is electrically connected to the second capacitor; one end of the second capacitor is grounded, and the other end is electrically connected to the 94th pin of the main control chip; the 80th pin of the main control chip is connected to a 0.85V power supply voltage; one end of the third capacitor is grounded, and the other end is electrically connected to the fourth capacitor; one end of the fourth capacitor is grounded, and the other end is electrically connected to the 80th pin of the main control chip; the 104th pin of the main control chip is connected to a 1.35V power supply voltage; one end of the fifth capacitor is grounded, and the other end is electrically connected to the sixth capacitor; one end of the sixth capacitor is grounded, and the other end is electrically connected to the 104th pin of the main control chip; one end of the first resistor is connected to the fifth pin of the main control chip. The first resistor has thirteen pins electrically connected, with the other end connected to the WIFI module. One end of the second resistor is electrically connected to the fifty-fourth pin of the main control chip, and the other end is connected to the WIFI module. The driving circuit is electrically connected to the one hundred and thirteenth and one hundred and twelfth pins of the main control chip. One end of the third resistor is electrically connected to the one hundred and thirteenth pin of the main control chip, and the other end is connected to a 3.3V power supply. One end of the fourth resistor is electrically connected to the third resistor, and the other end is connected to the one hundred and twelfth pin of the main control chip. Pins fifty-seven, fifty-eight, sixty-six, sixty-seven, sixty-eight, sixty-nine, seventy, and seventy-eight of the main control chip are all electrically connected to the first image sensor circuit. Pins four, five, seventy-three, seventy-four, seventy-fifth, seventy-six, seventy-seven, and seventy-eight of the main control chip are all electrically connected to the second image sensor circuit.

[0009] Further, the first image sensor circuit includes a first image sensor, a fifth resistor, and a sixth resistor; one end of the fifth resistor is electrically connected to the fifty-seventh pin of the main control chip, and the other end is connected to a 1.8V power supply voltage; one end of the sixth resistor is electrically connected to the fifth resistor, and the other end is electrically connected to the fifty-eighth pin of the main control chip; the fourth A pin of the first image sensor is electrically connected to the fifth resistor; the fifth A pin of the first image sensor is electrically connected to the sixth resistor; the fourth D pin of the first image sensor is electrically connected to the sixty-ninth pin of the main control chip; the fourth C pin of the first image sensor is electrically connected to the sixty-eighth pin of the main control chip; the fifth D pin of the first image sensor is electrically connected to the sixty-seventh pin of the main control chip; the fifth E pin of the first image sensor is electrically connected to the sixty-sixth pin of the main control chip; the second D pin of the first image sensor is electrically connected to the seventy-first pin of the main control chip; and the third D pin of the first image sensor is electrically connected to the seventieth pin of the main control chip.

[0010] Further; the second image sensor circuit includes a second image sensor, a seventh resistor, and an eighth resistor; one end of the seventh resistor is connected to the fifth pin of the main control chip, and the other end is connected to a 1.8V power supply voltage; one end of the eighth resistor is electrically connected to the seventh resistor, and the other end is electrically connected to the fourth pin of the main control chip; the fourth A pin of the first image sensor is electrically connected to the seventh resistor; the fifth A pin of the first image sensor is electrically connected to the eighth resistor; the fourth D pin of the first image sensor is electrically connected to the seventy-sixth pin of the main control chip; the fourth C pin of the first image sensor is electrically connected to the seventy-fifth pin of the main control chip; the fifth D pin of the first image sensor is electrically connected to the seventy-fourth pin of the main control chip; the fifth E pin of the first image sensor is electrically connected to the seventy-third pin of the main control chip; the second D pin of the first image sensor is electrically connected to the seventy-eighth pin of the main control chip; and the third D pin of the first image sensor is electrically connected to the seventy-seventh pin of the main control chip.

[0011] Further, the driving circuit includes a horizontal stepper motor, a vertical stepper motor, a drive control board, a seventh capacitor, and an eighth capacitor. The first pin of the drive control board is connected to a 5V power supply. One end of the seventh capacitor is grounded, and the other end is electrically connected to the first pin of the drive control board. One end of the eighth capacitor is grounded, and the other end is electrically connected to the seventh capacitor. The second pin of the drive control board is electrically connected to the eighth resistor. The fifth pin of the drive control board is electrically connected to the seventh resistor. The thirteenth, fourteenth, fifteenth, and sixteenth pins of the drive control board are all electrically connected to the horizontal stepper motor. The ninth, tenth, eleventh, and twelfth pins of the drive control board are all electrically connected to the vertical stepper motor. Both the horizontal and vertical stepper motors are electrically connected to the second image sensor.

[0012] Furthermore, the main control chip is model KM02D.

[0013] Furthermore, the focal length of the short-focus lens is 2.8mm, and the focal length of the long-focus lens is 6mm.

[0014] The beneficial effects of this utility model are: This invention provides a control circuit for a binocular surveillance camera that supports both telephoto and short-focus lenses. The main control circuit communicates with the first and second image sensor circuits via a high-speed MIPI interface, ensuring that the two image sensors can independently acquire data and output synchronously. This supports simultaneous display or switching of binocular images, improving the flexibility and integrity of monitoring. The short-focus lens, combined with a wide field of view, provides overall coverage of the monitored area; while the telephoto lens captures distant details. This combination solves the problem of traditional monitoring equipment "missing some details," truly achieving "seeing everything clearly." The drive circuit communicates with the main control circuit via the I²C protocol and drives the telephoto lens to rotate horizontally and vertically, enabling remote viewing angle adjustment. This allows users to flexibly select the area of ​​interest, improving the accuracy and practicality of remote monitoring. Attached Figure Description

[0015] Figure 1 This is a structural block diagram of a binocular surveillance camera control circuit that supports both long-focus and short-focus lenses according to the present invention. Figure 2 This is a circuit diagram of a control circuit for a binocular surveillance camera that supports both telephoto and short-focus lenses, according to this utility model. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0018] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0019] This invention proposes a control circuit for a binocular surveillance camera that supports both telephoto and short-focus lenses.

[0020] In the embodiments of this utility model, such as Figure 1-2 As shown, this is a control circuit for a binocular surveillance camera that supports both telephoto and short-focus lenses. The control circuit includes a main control circuit, a short-focus lens and a telephoto lens for capturing peripheral images, a first image sensor circuit, a second image sensor circuit, a drive circuit for rotating the telephoto lens, a power input terminal, a power supply circuit, and a Wi-Fi module. The power input terminal is electrically connected to the input terminal of the power supply circuit, and the output terminal of the power supply circuit is electrically connected to the main control circuit. The main control circuit and the Wi-Fi module are connected via a USB interface. The first and second image sensor circuits are both connected to the main control circuit via a MIPI interface. The first image sensor circuit is electrically connected to the short-focus lens, and the second image sensor circuit is electrically connected to the telephoto lens. The input terminal of the drive circuit is connected to the main control circuit via the I²C protocol, and the output terminal of the drive circuit is electrically connected to the second image sensor. An antenna is soldered onto the Wi-Fi module.

[0021] In this embodiment, the main control circuit includes a main control chip, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a first resistor, a second resistor, a third resistor, and a fourth resistor. The 94th pin of the main control chip is connected to a 3.3V power supply. One end of the first capacitor is grounded, and the other end is electrically connected to the second capacitor. One end of the second capacitor is grounded, and the other end is electrically connected to the 94th pin of the main control chip. The 80th pin of the main control chip is connected to a 0.85V power supply. One end of the third capacitor is grounded, and the other end is electrically connected to the fourth capacitor. One end of the fourth capacitor is grounded, and the other end is electrically connected to the 80th pin of the main control chip. The 104th pin of the main control chip is connected to a 1.35V power supply. One end of the fifth capacitor is grounded, and the other end is electrically connected to the sixth capacitor. One end of the sixth capacitor is grounded, and the other end is electrically connected to the 104th pin of the main control chip. One end of the first resistor is connected to the 94th pin of the main control chip. The first resistor has 53 pins electrically connected, with the other end connected to the WIFI module. One end of the second resistor is electrically connected to the 54th pin of the main control chip, and the other end is connected to the WIFI module. The driving circuit is electrically connected to the 113th and 112th pins of the main control chip. One end of the third resistor is electrically connected to the 113th pin of the main control chip, and the other end is connected to a 3.3V power supply. One end of the fourth resistor is electrically connected to the third resistor, and the other end is connected to the 112th pin of the main control chip. Pins 57, 58, 66, 67, 68, 69, 70, and 71 of the main control chip are all electrically connected to the first image sensor circuit. Pins 4, 5, 73, 74, 75, 76, 77, and 78 of the main control chip are all electrically connected to the second image sensor circuit.

[0022] In this embodiment, the first image sensor circuit includes a first image sensor, a fifth resistor, and a sixth resistor. One end of the fifth resistor is electrically connected to the fifty-seventh pin of the main control chip, and the other end is connected to a 1.8V power supply. One end of the sixth resistor is electrically connected to the fifth resistor, and the other end is electrically connected to the fifty-eighth pin of the main control chip. The fourth A pin of the first image sensor is electrically connected to the fifth resistor, the fifth A pin of the first image sensor is electrically connected to the sixth resistor, the fourth D pin of the first image sensor is electrically connected to the sixty-ninth pin of the main control chip, the fourth C pin of the first image sensor is electrically connected to the sixty-eighth pin of the main control chip, the fifth D pin of the first image sensor is electrically connected to the sixty-seventh pin of the main control chip, the fifth E pin of the first image sensor is electrically connected to the sixty-sixth pin of the main control chip, the second D pin of the first image sensor is electrically connected to the seventy-first pin of the main control chip, and the third D pin of the first image sensor is electrically connected to the seventieth pin of the main control chip.

[0023] In this embodiment, the second image sensor circuit includes a second image sensor, a seventh resistor, and an eighth resistor. One end of the seventh resistor is connected to the fifth pin of the main control chip, and the other end is connected to a 1.8V power supply. One end of the eighth resistor is electrically connected to the seventh resistor, and the other end is electrically connected to the fourth pin of the main control chip. The fourth A pin of the first image sensor is electrically connected to the seventh resistor, the fifth A pin of the first image sensor is electrically connected to the eighth resistor, the fourth D pin of the first image sensor is electrically connected to the seventy-sixth pin of the main control chip, the fourth C pin of the first image sensor is electrically connected to the seventy-fifth pin of the main control chip, the fifth D pin of the first image sensor is electrically connected to the seventy-fourth pin of the main control chip, the fifth E pin of the first image sensor is electrically connected to the seventy-third pin of the main control chip, the second D pin of the first image sensor is electrically connected to the seventy-eighth pin of the main control chip, and the third D pin of the first image sensor is electrically connected to the seventy-seventh pin of the main control chip.

[0024] In this embodiment, the driving circuit includes a horizontal stepper motor, a vertical stepper motor, a driving control board, a seventh capacitor, and an eighth capacitor. The first pin of the driving control board is connected to a 5V power supply. One end of the seventh capacitor is grounded, and the other end is electrically connected to the first pin of the driving control board. One end of the eighth capacitor is grounded, and the other end is electrically connected to the seventh capacitor. The second pin of the driving control board is electrically connected to the eighth capacitor. The fifth pin of the driving control board is electrically connected to the seventh capacitor. The thirteenth, fourteenth, fifteenth, and sixteenth pins of the driving control board are all electrically connected to the horizontal stepper motor. The ninth, tenth, eleventh, and twelfth pins of the driving control board are all electrically connected to the vertical stepper motor. Both the horizontal and vertical stepper motors are electrically connected to the second image sensor.

[0025] In this embodiment, the main control chip is model KM02D.

[0026] In this embodiment, the focal length of the short-focus lens is 2.8mm, and the focal length of the long-focus lens is 6mm.

[0027] The camera device provided in this application uses a 12V DC power input, and through the internal power management circuit, it performs multiple voltage conversions to output various voltage levels including 5V, 3.3V, 2.8V, 1.8V, 1.35V and 0.85V, in order to meet the power supply requirements of various functional modules inside the system.

[0028] The main control chip is a high-performance KM02D processing chip, which supports dual-camera access and can connect to two image sensors simultaneously. Image data is transmitted between the main control chip and the first and second image sensors via a MIPI interface, enabling synchronous binocular acquisition and output, providing users with a richer and more immersive monitoring visual experience.

[0029] Furthermore, this application integrates a WIFI module, enabling wireless transmission of image signals and user control commands via the WIFI network. High-speed and stable data communication between the main control chip and the WIFI module is achieved through the USB protocol, ensuring the real-time performance and reliability of image transmission.

[0030] This application employs a dual-lens design combining a fixed short-focus lens and a rotatable long-focus lens. The short-focus lens has a focal length of 2.8mm and a diagonal field of view of up to 160°, enabling it to cover a large monitoring area and achieve comprehensive control of the overall scene. The long-focus lens has a focal length of 6mm and offers higher spatial resolution, allowing for clear capture of distant details.

[0031] To further enhance the flexibility and practicality of the telephoto lens, this application specifically equips it with a horizontal stepper motor and a vertical stepper motor in the horizontal and vertical directions, and precisely controls the two stepper motors through a drive control board, driving the telephoto lens to rotate freely in the horizontal and vertical directions, thereby achieving precise positioning and viewing of specific areas.

[0032] Compared to traditional single-lens surveillance equipment, this application effectively solves the technical challenge of balancing "wide-range viewing" and "clear-viewing" by using a combination of short-focus and telephoto lenses. Users can use the short-focus lens to monitor the overall situation in real time, while selectively magnifying distant targets by manipulating the telephoto lens to obtain more comprehensive and detailed monitoring information.

[0033] In summary, the camera system provided in this application not only has a wide field of view but also excellent long-distance recognition capabilities, making up for the limitations of most cameras on the market in application scenarios, and has significant technical advantages and practical value.

[0034] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A binocular monitoring camera control circuit supporting long and short focus, characterized by, The binocular surveillance camera control circuit includes a main control circuit, a short-focus lens and a long-focus lens for capturing surrounding images, a first image sensor circuit, a second image sensor circuit, a drive circuit for driving the long-focus camera to rotate, a power input terminal, a power supply circuit, and a WIFI module. The power input terminal is electrically connected to the input terminal of the power supply circuit, and the output terminal of the power supply circuit is electrically connected to the main control circuit. The main control circuit and the WIFI module are connected via a USB interface. The first image sensor circuit and the second image sensor circuit are both connected to the main control circuit via a MIPI interface. The first image sensor circuit is electrically connected to the short-focus lens, and the second image sensor circuit is electrically connected to the long-focus lens. The input terminal of the drive circuit is connected to the main control circuit via the I²C protocol, and the output terminal of the drive circuit is electrically connected to the second image sensor. An antenna is soldered onto the WIFI module.

2. The dual surveillance camera control circuit supporting long and short focus according to claim 1, characterized in that, The main control circuit includes a main control chip, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a first resistor, a second resistor, a third resistor, and a fourth resistor. Pin 94 of the main control chip is connected to a 3.3V power supply. One end of the first capacitor is grounded, and the other end is electrically connected to the second capacitor. One end of the second capacitor is grounded, and the other end is electrically connected to pin 94 of the main control chip. Pin 80 of the main control chip is connected to a 0.85V power supply. One end of the third capacitor is grounded, and the other end is electrically connected to the fourth capacitor. One end of the fourth capacitor is grounded, and the other end is electrically connected to pin 80 of the main control chip. Pin 104 of the main control chip is connected to a 1.35V power supply. One end of the fifth capacitor is grounded, and the other end is electrically connected to the sixth capacitor. One end of the sixth capacitor is grounded, and the other end is electrically connected to pin 104 of the main control chip. One end of the first resistor is connected to pin 53 of the main control chip. One end of the first resistor is electrically connected to the first image sensor circuit, and the other end is electrically connected to the WIFI module. One end of the second resistor is electrically connected to the 54th pin of the main control chip, and the other end is electrically connected to the WIFI module. The driving circuit is electrically connected to the 113th and 112th pins of the main control chip. One end of the third resistor is electrically connected to the 113th pin of the main control chip, and the other end is connected to a 3.3V power supply. One end of the fourth resistor is electrically connected to the third resistor, and the other end is electrically connected to the 112th pin of the main control chip. Pins 57, 58, 66, 67, 68, 69, 70, and 71 of the main control chip are all electrically connected to the first image sensor circuit. Pins 4, 5, 73, 74, 75, 76, 77, and 78 of the main control chip are all electrically connected to the second image sensor circuit.

3. The dual surveillance camera control circuit supporting long and short focus according to claim 2, wherein, The first image sensor circuit includes a first image sensor, a fifth resistor, and a sixth resistor. One end of the fifth resistor is electrically connected to the fifty-seventh pin of the main control chip, and the other end is connected to a 1.8V power supply. One end of the sixth resistor is electrically connected to the fifth resistor, and the other end is electrically connected to the fifty-eighth pin of the main control chip. The fourth A pin of the first image sensor is electrically connected to the fifth resistor, the fifth A pin of the first image sensor is electrically connected to the sixth resistor, the fourth D pin of the first image sensor is electrically connected to the sixty-ninth pin of the main control chip, the fourth C pin of the first image sensor is electrically connected to the sixty-eighth pin of the main control chip, the fifth D pin of the first image sensor is electrically connected to the sixty-seventh pin of the main control chip, the fifth E pin of the first image sensor is electrically connected to the sixty-sixth pin of the main control chip, the second D pin of the first image sensor is electrically connected to the seventy-first pin of the main control chip, and the third D pin of the first image sensor is electrically connected to the seventieth pin of the main control chip.

4. The dual surveillance camera control circuit supporting long and short focus according to claim 3, characterized in that, The second image sensor circuit includes a second image sensor, a seventh resistor, and an eighth resistor. One end of the seventh resistor is electrically connected to the fifth pin of the main control chip, and the other end is connected to a 1.8V power supply. One end of the eighth resistor is electrically connected to the seventh resistor, and the other end is electrically connected to the fourth pin of the main control chip. The fourth A pin of the first image sensor is electrically connected to the seventh resistor, the fifth A pin of the first image sensor is electrically connected to the eighth resistor, the fourth D pin of the first image sensor is electrically connected to the seventy-sixth pin of the main control chip, the fourth C pin of the first image sensor is electrically connected to the seventy-fifth pin of the main control chip, the fifth D pin of the first image sensor is electrically connected to the seventy-fourth pin of the main control chip, the fifth E pin of the first image sensor is electrically connected to the seventy-third pin of the main control chip, the second D pin of the first image sensor is electrically connected to the seventy-eighth pin of the main control chip, and the third D pin of the first image sensor is electrically connected to the seventy-seventh pin of the main control chip.

5. The dual surveillance camera control circuit supporting long and short focus according to claim 4, characterized in that, The driving circuit includes a horizontal stepper motor, a vertical stepper motor, a drive control board, a seventh capacitor, and an eighth capacitor. The first pin of the drive control board is connected to a 5V power supply. One end of the seventh capacitor is grounded, and the other end is electrically connected to the first pin of the drive control board. One end of the eighth capacitor is grounded, and the other end is electrically connected to the seventh capacitor. The second pin of the drive control board is electrically connected to the eighth capacitor. The fifth pin of the drive control board is electrically connected to the seventh capacitor. The thirteenth, fourteenth, fifteenth, and sixteenth pins of the drive control board are all electrically connected to the horizontal stepper motor. The ninth, tenth, eleventh, and twelfth pins of the drive control board are all electrically connected to the vertical stepper motor. Both the horizontal and vertical stepper motors are electrically connected to the second image sensor.

6. The dual surveillance camera control circuit supporting long and short focus according to claim 4, characterized in that, The main control chip is model KM02D.

7. The long and short focus supported binocular monitoring camera control circuit according to claim 1, wherein, The short focal length lens has a focal length of 2.8mm, and the long focal length lens has a focal length of 6mm.

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