Water conservancy flood control early warning device

Abstract

This utility model provides a flood control early warning device, relating to the technical field of water level monitoring devices. The device includes: an installation pipe, a water level gauge, a floating block, two guide shafts, a camera, and a display device. The water level gauge is fixedly connected to the installation pipe, the two guide shafts are also fixedly connected to the installation pipe, the floating block is slidably connected to the two guide shafts, a mounting frame is fixedly connected to the floating block, the camera is fixedly connected to the mounting frame and is used to capture images of the water level gauge, the display device is mounted on the installation pipe and connected to the camera to display the content captured by the camera, and lighting lamps are provided on both sides of the camera. This flood control early warning device avoids the limitations of traditional mechanical water level gauges that rely on manual long-distance visual observation.

Description

Technical Field

[0001] This utility model relates to the technical field of water level monitoring devices, specifically a water conservancy flood control early warning device. Background Technology

[0002] As a core technology for safeguarding people's lives and property, flood control has achieved significant development in recent years through engineering structural innovation and technological iteration. Traditional flood control methods mainly rely on fixed dam structures, such as concrete or steel-timber composite dams for water level control. However, these structures lack flexibility in responding to sudden flood level changes. With technological advancements, new flood control devices have emerged, such as height-adjustable water-retaining mechanisms, buoyancy-driven flood control components, and intelligent systems integrating water level monitoring and early warning functions. These technologies, through modular design, optimized buffer mechanisms, and automated control, have significantly improved the adaptability of flood control projects. However, the effectiveness of flood control systems still highly depends on the accurate acquisition and rapid response of real-time water level data.

[0003] Currently, river water level monitoring commonly uses mechanical water level gauges, which work by manually observing the scale markings on the gauge's surface to determine the water level. However, these gauges are usually fixed in the middle of the river or near the bank, requiring observers to make visual estimations from a considerable distance (such as from the bank). The difficulty of reading these gauges is significantly increased, especially at night or in inclement weather, due to factors such as lighting conditions, viewing angle, and the clarity of the scale markings, leading to reading errors. Utility Model Content

[0004] According to an embodiment of this utility model, a flood control early warning device is provided to solve the problems mentioned in the background art.

[0005] In a first aspect, a flood control early warning device for water conservancy is provided.

[0006] The flood control and early warning device includes: an installation pipe, a water level gauge, a floating block, two guide shafts, a camera, and a display device. The water level gauge is fixedly connected to the installation pipe, the two guide shafts are fixedly connected to the installation pipe, the floating block is slidably connected to the two guide shafts, an installation frame is fixedly connected to the floating block, the camera is fixedly connected to the installation frame and is used to capture images of the water level gauge, the display device is installed on the installation pipe and connected to the camera to display the content captured by the camera, and lighting lamps are also provided on both sides of the camera.

[0007] Preferably, the device further includes an alarm component, which includes a contact switch and an alarm; the contact switch is disposed between the two guide shafts and is electrically connected to the alarm, and the floating block is located below the contact switch.

[0008] Preferably, the alarm includes a first motor, a first housing, a second housing, a rotating disk, two alarm lights, a whistle, and a rotating shaft; the first housing is connected to the upper end of the mounting tube via a support rod, and a light-transmitting window is provided on the side wall of the first housing; the rotating disk is disposed inside the first housing, the two alarm lights are fixedly installed on the lower surface of the rotating disk, the first motor is installed on the lower surface of the first housing, the rotating shaft is connected to the output end of the first motor, the second housing is fixedly connected to the first housing, the whistle is rotatably installed inside the second housing, an air inlet is provided on the top wall of the second housing, and a sound window is provided on the side wall of the second housing; the rotating shaft passes through the first housing and extends into the second housing, the rotating shaft is rotatably connected to the first housing, the rotating shaft is rotatably connected to the second housing, the rotating shaft passes through the rotating disk and is fixedly connected to the rotating disk, and the end of the rotating shaft away from the first motor is fixedly connected to the whistle.

[0009] Preferably, it further includes an adjustment component, which includes a second motor, a lead screw, and a moving block. The second motor is fixedly connected to the mounting tube, the lead screw is rotatably mounted inside the mounting tube, the output end of the second motor is connected to the lead screw, the moving block is threadedly connected to the lead screw, the side wall of the mounting tube is provided with a sliding groove, the moving block passes through the sliding groove and is slidably connected to the sliding groove, and the contact switch is connected to the lower surface of the moving block.

[0010] Preferably, the mounting frame includes two side plates, two horizontal plates, and a mounting plate; the two side plates are respectively fixedly connected to the floating block, the two horizontal plates are parallel to each other and are disposed between the two side plates, the mounting plate is fixedly connected to the two side plates, the camera is mounted on the mounting plate, and the camera captures images of the gap between the two horizontal plates.

[0011] Preferably, the display device includes a display screen, a mounting arm, and a light shield; the display screen is connected to the mounting tube via the mounting arm, the light shield is connected to the display screen, and the display screen is electrically connected to the camera.

[0012] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0013] This invention provides a flood control early warning device that avoids the limitations of traditional mechanical water level gauges that rely on manual long-distance visual observation. For example, by setting up a camera to capture images of a specific area and transmitting the images to a display screen, operators can clearly observe the details related to the water level on the screen. This method is unaffected by lighting conditions, viewing angle deviations, or the clarity of scale markings. Even at night or in inclement weather, it can provide operators with clear and accurate water level information, effectively reducing reading errors and greatly improving the accuracy of water level monitoring.

[0014] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0015] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0016] Figure 1 A three-dimensional structural schematic diagram of a flood control early warning device according to an embodiment of the present invention is shown;

[0017] Figure 2 An exploded structural diagram of a flood control early warning device according to an embodiment of the present invention is shown.

[0018] Figure 3 An exploded view of the regulating component of a flood control early warning device according to an embodiment of the present invention is shown.

[0019] Figure 4 An exploded view of the alarm of a flood control early warning device according to an embodiment of the present invention is shown.

[0020] Figure 5 An exploded view of the alarm of a flood control early warning device according to an embodiment of the present invention is shown.

[0021] Tag name

[0022] 1-Installation pipe, 11-Slide groove, 2-Water level gauge, 3-Floating block, 31-Installation frame, 311-Side plate, 312-Horizontal plate, 313-Installation plate, 4-Guide shaft, 5-Camera, 6-Alarm assembly, 61-Contact switch, 62-Alarm, 621-First motor, 622-First housing, 6221-Light-transmitting window, 623-Second housing, 6231-Air inlet, 6232-Sound window, 624-Rotating disc, 625-Alarm light, 626-Rotating shaft, 627-Sound wheel, 7-Adjustment assembly, 71-Second motor, 72-Lead screw, 73-Moving block, 8-Display device, 81-Display screen, 82-Installation arm, 83-Light shield. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0025] like Figures 1 to 5As shown, the flood control early warning device includes: an installation pipe 1, a water level gauge 2, a floating block 3, two guide shafts 4, a camera 5, and a display device 8. The water level gauge 2 is rigidly connected to the side groove of the installation pipe 1 by high-strength bolts. The two guide shafts 4 are made of stainless steel and are welded parallel to each other on the pre-set guide rail bases on both sides of the installation pipe 1. The floating block 3 is internally fitted with two sets of linear bearings (model: LM8UU), forming a precision sliding pair connection with the guide shafts 4. The top of the floating block 3 is fixed with a mounting frame 31 by anti-corrosion connectors. The camera 5 is an IP... An industrial-grade camera with a protection rating of 68 (such as Hikvision DS-2CD3T47EWD-L) is fixed to the mounting frame 31 at multiple angles via a gimbal. The optical axis of the camera 5 is perpendicular to the scale surface of the water level gauge 2. The display device 8 integrates a waterproof LCD screen with touch functionality (such as Advantech TPC-1570H), which is connected to the camera 5 via an RS485 communication cable and has an embedded image recognition algorithm module. Dimmable LED lights 9 (color temperature 5000K, illuminance ≥2000Lux) are also provided on both sides of the camera 5.

[0026] In use, the bottom of the mounting pipe 1 is embedded into the precast concrete base and anchored to the river monitoring point. The floating block 3 is made of closed-cell foamed polyethylene (density 0.03g / cm³), and its buoyancy coefficient, calculated by hydrodynamics, can support the total mass of the camera 5 assembly (including error compensation value ±5%). The lighting lamp 9 automatically switches between day and night modes through a photosensitive sensor (such as GL5528), and activates the supplementary lighting function in low-light environments to ensure that the camera 5 can clearly capture the laser-etched scale lines (line width 0.5mm, interval 1cm) of the water level gauge 2 with a resolution of 0.1mm. When the floating block 3 moves vertically along the guide shaft 4 with the water level change, the mounting frame 31 drives the camera 5 to move synchronously. The camera 5 continuously captures images of the water level gauge 2 at a rate of 30 frames per second and transmits them to the display device 8 in real time via H.265 encoding. The YOLOv5 algorithm model built into the display device 8 automatically identifies the current water level scale value and triggers an audible and visual alarm when the limit is exceeded (the alarm threshold can be set in stages).

[0027] This flood control early warning device avoids the limitations of traditional mechanical water level gauges that rely on manual long-distance visual observation. For example, by setting up a camera 5 to capture images of a specific area and transmitting the images to a display screen 81 for display, operators can clearly observe the details related to the water level on the display screen 81. This method is unaffected by lighting conditions, viewing angle deviation, and the clarity of scale markings. Even at night or in inclement weather, it can provide operators with clear and accurate water level information, effectively reducing reading errors and greatly improving the accuracy of water level monitoring.

[0028] In this embodiment, an alarm component 6 is further provided, which mainly consists of a contact switch 61 and an alarm 62.

[0029] Specifically, the contact switch 61 is strategically positioned between the two guide shafts 4. This positioning ensures that the contact switch 61 can operate stably in its designated working environment while also facilitating its coordination with other components. The contact switch 61 and the alarm 62 are electrically connected to transmit signals, ensuring that when the contact switch 61 is triggered, the signal is promptly transmitted to the alarm 62, prompting it to respond accordingly.

[0030] Meanwhile, the float block 3 is positioned below the contact switch 61. In practical applications, as the water level gradually rises, the float block 3 will move upwards due to buoyancy. When the water level reaches a certain point, the float block 3 will touch the contact switch 61 above. At this time, the state of the contact switch 61 changes, its internal circuit is activated, and an electrical signal is generated. This electrical signal is rapidly transmitted to the alarm 62 along a pre-connected line. Upon receiving the signal, the alarm 62 is activated and immediately sounds an alarm to remind relevant personnel that the water level has reached the set warning position, indicating a potential risk or the need for appropriate action.

[0031] With such detailed and logically clear settings, alarm component 6 can accurately and reliably realize water level monitoring and alarm functions, effectively improving the system's response capability and safety to water level changes.

[0032] In this embodiment, the structure and working principle of the alarm component 6 are described in more detail and clearly. The alarm 62 in the alarm component 6 has a relatively complex and ingenious structural design, the specific composition of which is as follows:

[0033] The alarm 62 is mainly composed of a first motor 621, a first housing 622, a second housing 623, a rotating disc 624, two alarm lights 625, a sound wheel 627, and a rotating shaft 626, among other components.

[0034] First, the installation positions and connections of each component are described. The first housing 622 is securely connected to the upper end of the mounting tube 1 via a support rod. This connection method ensures the stability of the first housing 622 within the entire system, enabling it to operate reliably in the corresponding working environment. A light-transmitting window 6221 is specially provided on the side wall of the first housing 622. The function of this light-transmitting window 6221 is to provide a channel for the light from the subsequent alarm light 625 to pass through, so as to realize a specific alarm indication function.

[0035] The rotating disk 624 is precisely positioned within the internal space of the first housing 622, providing a mounting base for the alarm lights 625. The two alarm lights 625 are securely mounted on the lower surface of the rotating disk 624, ensuring stable rotation of the alarm lights 625 as the disk 624 rotates. The first motor 621 is mounted on the lower surface of the first housing 622, providing power to some of the rotating components of the entire alarm 62. One end of the rotating shaft 626 is tightly connected to the output end of the first motor 621, ensuring accurate transmission of power from the first motor 621.

[0036] The second housing 623 is fixedly connected to the first housing 622, forming a tightly integrated whole. The sound wheel 627 is rotatably mounted inside the second housing 623, providing a key component for the audible alarm function. An air inlet 6231 is provided on the top wall of the second housing 623, allowing outside air to enter the second housing 623 when the alarm 62 is activated. Simultaneously, a sound window 6232 is provided on the side wall of the second housing 623, through which compressed air is discharged, thus generating the alarm sound.

[0037] The arrangement of the rotating shaft 626 is crucial; it passes through the first housing 622 and extends into the second housing 623. The rotating shaft 626 is rotatably connected to both the first and second housings 622 and 623. This connection method ensures both the free rotation of the rotating shaft 626 and the stability of the entire structure. Furthermore, the rotating shaft 626 also passes through and is fixedly connected to the rotating disk 624. Simultaneously, the end of the rotating shaft 626 furthest from the first motor 621 is also fixedly connected to the sound wheel 627, thus forming a complete power transmission chain.

[0038] The working process of the alarm 62 will be explained in detail below. When the float 3 moves upward with the rise of the water level and touches the contact switch 61, the contact switch 61 will trigger a corresponding electrical signal, which is transmitted to the first motor 621, thereby starting the first motor 621.

[0039] After the first motor 621 starts, its output drives the connected rotating shaft 626 to rotate. Simultaneously, the alarm light 625 receives the corresponding electrical signal and illuminates. Since the rotating shaft 626 is fixedly connected to the rotating disk 624, the rotation of the shaft 626 causes the rotating disk 624 to rotate synchronously, which in turn causes the two alarm lights 625 mounted on the lower surface of the rotating disk 624 to rotate as well. During rotation, the light from the alarm lights 625 alternately passes through the light-transmitting window 6221 on the side wall of the first housing 622, causing the first housing 622 to flash. This flashing motion provides a direct visual indication to personnel that the water level has risen to a set threshold, potentially posing a risk.

[0040] As the rotating shaft 626 rotates, the sound wheel 627, which is fixedly connected to the rotating shaft 626, also rotates. During rotation, the sound wheel 627 draws in outside air through the air inlet 6231 of the second housing 623. With the continuous rotation of the sound wheel 627, the drawn-in air is compressed within the second housing 623. The compressed air is then expelled through the sound window 6232 on the side wall of the second housing 623. This expulsion causes vibrations in the surrounding air, causing the second housing 623 to emit an alarm sound, thus achieving the audible alarm function.

[0041] In this embodiment, an adjustment component 7 is further added. This adjustment component 7 is mainly used to flexibly adjust the alarm threshold. Its specific structure and working principle are as follows:

[0042] The adjustment assembly 7 consists of a second motor 71, a lead screw 72, and a moving block 73. The second motor 71 is fixedly connected to the mounting pipe 1. This connection ensures the stability of the second motor 71 during operation, enabling it to reliably provide power to subsequent components.

[0043] The lead screw 72 is rotatably mounted inside the mounting tube 1. The output end of the second motor 71 is connected to the lead screw 72. When the second motor 71 starts running, it can accurately transmit power to the lead screw 72, driving it to rotate.

[0044] The movable block 73 is connected to the lead screw 72 by a thread. This threaded connection allows the movable block 73 to move along the axial direction of the lead screw 72 according to the rotation direction and speed of the lead screw 72 when the lead screw 72 rotates.

[0045] To ensure good guidance and stability in the movement of the movable block 73, a groove 11 is specially provided on the side wall of the mounting tube 1. The movable block 73 passes through the groove 11 and forms a sliding connection with the groove 11. In this way, during the movement of the movable block 73, the groove 11 can effectively limit and guide it, ensuring that the movable block 73 can only move in a straight line along the direction of the groove 11, avoiding deviation or shaking, thereby ensuring the smooth and stable operation of the movable block 73.

[0046] Contact switch 61 is connected to the lower surface of movable block 73. When the second motor 71 is started, its output drives lead screw 72 to rotate. As lead screw 72 rotates, movable block 73, which is threaded to it, moves along the axial direction of lead screw 72 under the action of threaded transmission. During the movement of movable block 73, since contact switch 61 is connected to the lower surface of movable block 73, the movement of movable block 73 will cause contact switch 61 to move synchronously.

[0047] Because the float 3 rises and touches the contact switch 61 to trigger the alarm when the water level changes, and the height of the contact switch 61 can now be changed by the adjustment component 7. When the height of the contact switch 61 changes, the float 3 needs to rise to different heights to touch the contact switch 61, which means that the alarm threshold has changed accordingly. In this way, the adjustment component 7 achieves flexible adjustment of the alarm threshold. Users can adjust the height of the contact switch 61 by controlling the operation of the second motor 71 according to actual needs, and thus set an appropriate alarm threshold to meet the water level alarm requirements in different scenarios.

[0048] In summary, the configuration of adjustment component 7 provides the entire system with more flexible and personalized alarm threshold adjustment functions, enhancing the system's applicability and practicality.

[0049] In this embodiment, the structure of the mounting frame 31 is described in detail. The mounting frame 31 is mainly composed of two side plates 311, two horizontal plates 312, and a mounting plate 313.

[0050] The two side plates 311 are fixedly connected to the floating block 3. This connection ensures a stable relationship between the mounting frame 31 and the floating block 3, allowing the mounting frame 31 to move synchronously with the floating block 3, thus guaranteeing the stability of the entire structure during water level changes.

[0051] The two horizontal plates 312 are arranged parallel to each other and are reasonably positioned between the two side plates 311. This layout not only provides structural support for the mounting frame 31, but also creates a specific spatial area between the two horizontal plates 312.

[0052] Mounting plate 313 is fixedly connected to the two side plates 311, further enhancing the overall structural strength of the mounting frame 31. Camera 5 is mounted on mounting plate 313, and its mounting position is carefully designed so that camera 5 can capture images of the gap between the two horizontal plates 312.

[0053] Through this structural design, camera 5 can monitor the area between the two horizontal plates 312 in real time. In practical applications, this area may experience phenomena related to water level changes or targets that need to be monitored. The images captured by camera 5 can provide important evidence for subsequent analysis and judgment, helping to promptly identify potential problems or obtain key information, thereby better achieving the functions and objectives of the entire system.

[0054] In this embodiment, a display device 8 is provided, which mainly consists of a display screen 81, a mounting arm 82, and a light shield 83.

[0055] The display screen 81 is connected to the mounting tube 1 via the mounting arm 82. The function of the mounting arm 82 is to provide stable support and a reasonable installation position for the display screen 81, ensuring that the display screen 81 is at a suitable working angle and height for easy viewing and operation by relevant personnel. At the same time, this connection method also ensures the stability of the display screen 81 in the entire system, enabling it to work normally under various environmental conditions.

[0056] The light shield 83 is connected to the display screen 81, and its main function is to reduce the interference of external light on the display effect of the display screen 81. Under different lighting conditions, especially in strong light environments, the light shield 83 can effectively block the surrounding light and prevent light from shining directly on the screen of the display screen 81, thereby improving the visibility of the display screen 81 and allowing users to see the content displayed on the screen more clearly.

[0057] The display screen 81 and the camera 5 are electrically connected. This connection method allows the images captured by the camera 5 to be successfully transmitted to the display screen 81. When the camera 5 captures a specific area (such as the gap between the two horizontal plates 312 mentioned above), the acquired image data is accurately transmitted to the display screen 81 along the connection line in the form of electrical signals.

[0058] Subsequently, the display screen 81 processes and displays the received image data, clearly showing the footage captured by the camera 5. This allows personnel on the shore to easily view the footage captured by the camera 5 on the display screen 81, gaining timely information about the relevant area and providing intuitive visual support for further decision-making and operations. The display device 8 effectively transmits and displays image data, greatly facilitating remote monitoring and observation of specific areas.

[0059] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A water conservancy flood control early warning device, characterized in that, include: The system includes an installation pipe (1), a water level gauge (2), a floating block (3), two guide shafts (4), a camera (5), and a display device (8). The water level gauge (2) is fixedly connected to the installation pipe (1), the two guide shafts (4) are fixedly connected to the installation pipe (1), the floating block (3) is slidably connected to the two guide shafts (4), an installation frame (31) is fixedly connected to the floating block (3), the camera (5) is fixedly connected to the installation frame (31), and the camera (5) is used to photograph the water level gauge (2). The display device (8) is installed on the installation pipe (1) and connected to the camera (5) to display the content photographed by the camera (5). Lighting lamps (9) are also provided on both sides of the camera (5).

2. The water conservancy flood control early warning device according to claim 1, characterized in that, It also includes an alarm component (6), which includes a contact switch (61) and an alarm (62); the contact switch (61) is disposed between the two guide shafts (4), the contact switch (61) is electrically connected to the alarm (62), and the floating block (3) is located below the contact switch (61).

3. The water conservancy flood control early warning device according to claim 2, characterized in that, The alarm (62) includes a first motor (621), a first housing (622), a second housing (623), a rotating disk (624), two alarm lights (625), a sound wheel (627), and a rotating shaft (626). The first housing (622) is connected to the upper end of the mounting tube (1) via a support rod. A light-transmitting window (6221) is provided on the side wall of the first housing (622). The rotating disk (624) is disposed inside the first housing (622). The two alarm lights (625) are fixedly installed on the lower surface of the rotating disk (624). The first motor (621) is installed on the lower surface of the first housing (622). The rotating shaft (626) is connected to the output end of the first motor (621). The second housing (623) is connected to the upper end of the mounting tube (1). The first housing (622) is fixedly connected, and the sound wheel (627) is rotatably installed in the second housing (623). The top wall of the second housing (623) is provided with an air inlet (6231), and the side wall of the second housing (623) is provided with a sound window (6232). The rotating shaft (626) passes through the first housing (622) and extends into the second housing (623). The rotating shaft (626) is rotatably connected to the first housing (622) and the second housing (623). The rotating shaft (626) passes through the rotating disk (624) and is fixedly connected to the rotating disk (624). The end of the rotating shaft (626) away from the first motor (621) is fixedly connected to the sound wheel (627).

4. The water conservancy flood control early warning device according to claim 2, characterized in that, It also includes an adjustment component (7), which includes a second motor (71), a lead screw (72) and a moving block (73). The second motor (71) is fixedly connected to the mounting tube (1), the lead screw (72) is rotatably installed inside the mounting tube (1), the output end of the second motor (71) is connected to the lead screw (72), the moving block (73) is threadedly connected to the lead screw (72), the side wall of the mounting tube (1) is provided with a sliding groove (11), the moving block (73) passes through the sliding groove (11) and is slidably connected to the sliding groove (11), and the contact switch (61) is connected to the lower surface of the moving block (73).

5. The water conservancy flood control early warning device according to claim 1, characterized in that, The mounting frame (31) includes two side plates (311), two horizontal plates (312), and a mounting plate (313); the two side plates (311) are fixedly connected to the floating block (3), the two horizontal plates (312) are parallel to each other and are arranged between the two side plates (311), the mounting plate (313) is fixedly connected to the two side plates (311), the camera (5) is mounted on the mounting plate (313), and the camera (5) takes pictures of the gap between the two horizontal plates (312).

6. The water conservancy flood control early warning device according to claim 1, characterized in that, The display device (8) includes a display screen (81), a mounting arm (82), and a light shield (83); the display screen (81) is connected to the mounting tube (1) through the mounting arm (82), the light shield (83) is connected to the display screen (81), and the display screen (81) is electrically connected to the camera (5).

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