Device and method capable of preventing high-altitude falling objects of dam

Abstract

The invention relates to the field of high-altitude falling prevention, in particular to a device and method capable of preventing high-altitude falling of objects on a dam. Comprising a first recognition unit, a second recognition unit, a control unit and an action unit, the control unit is connected with the first recognition unit, the second recognition unit and the action unit, the action unit comprises a driving part and a supporting part connected with the driving part, and the driving part drives the supporting part to rotate and unfold so as to bear falling objects; the first recognition unit and the second recognition unit work cooperatively to improve the falling object early warning and capturing effect, after an object falling signal is recognized, the control unit responds rapidly and drives the action unit to perform corresponding action, it is ensured that the system responds rapidly in a short time when finding the falling object, the falling object is effectively received, and the safety of the system is improved. Damage caused by falling of objects on the top of the dam is reduced to the maximum extent.

Description

Technical Field

[0001] The present invention relates to the field of preventing objects from falling from high altitude, and in particular to a device and method for preventing objects from falling from high altitude on a dam. Background Art

[0002] At a time when global energy is transitioning to clean and low-carbon development, hydropower, as a renewable energy form, is receiving much attention for its development and utilization. High dams and large reservoirs, with their huge storage capacity and strong power generation capacity, have become the main construction direction in the hydropower field. However, as the height of dams continues to rise, some new technical problems have emerged, and the problem of falling objects from high altitudes is one of the key problems that need to be solved urgently.

[0003] In the daily operation of high dams and large reservoirs, the dam top is the core area where workers carry out various operations, and personnel activities are frequent. When working on the dam top, practitioners will carry a variety of portable equipment and work tools and equipment, such as laptops, mobile phones, cameras, books, stationery, etc., which are commonly used equipment by workers. Once they fall, not only will the equipment itself be damaged, but the loss of data is more likely to have a serious impact on the management of the project. In terms of work tools and equipment, common tools such as wrenches and screwdrivers are essential for workers to inspect and maintain equipment, and surveying instruments are used to accurately measure project parameters to ensure the safety and stable operation of the project. Once these tools and equipment fall from the dam top, not only will the work progress be affected due to damage, but additional costs may also be incurred due to the replacement of new equipment.

[0004] Judging from the direction of falling objects, falling objects on the upstream reservoir side will generally fall into the water due to the geographical characteristics of the reservoir and the effect of gravity. When these falling objects contain harmful substances such as batteries and chemicals, the heavy metals in the batteries and the toxic components in the chemicals will quickly dissolve in the water, which will not only pollute the water quality of the reservoir, but also threaten the safety of downstream water use and the living environment of aquatic organisms in the long term; while falling objects on the downstream side will fall into the downstream riverbed or both sides of the river channel. These falling objects may injure people working or passing by near the river channel, thereby causing serious personal injury accidents to passers-by. Summary of the Invention In response to the problems mentioned in the prior art, the present invention proposes a device and method for preventing objects from falling from high altitudes on dams, aiming to solve the problem of lack of prevention and emergency treatment of objects from falling from high altitudes on dams in the prior art, improve dam safety, and reduce environmental pollution and property losses.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: The present invention provides a device for preventing objects from falling from high altitudes on dams, comprising a first recognition unit, a second recognition unit, a control unit, and an action unit. The control unit is connected to the first recognition unit, the second recognition unit, and the action unit, respectively. The action unit comprises a driving member and a supporting member connected to the driving member. The driving member drives the supporting member to rotate and expand to receive falling objects. When the control unit receives a signal indicating a falling object from the first recognition unit or the second recognition unit, it drives the action unit to move and catch the falling object.

[0006] As a further improvement of the present invention, the first recognition unit includes at least one camera, wherein the camera is arranged at the edge of the top of the dam, and the camera is arranged to face the edge of the dam.

[0007] As a further improvement of the present invention, the second identification unit includes a laser transceiver, which is arranged outside the guardrail at the top of the dam, wherein the laser light path formed by the laser transceiver can cover the top of the dam.

[0008] As a further improvement of the present invention, the laser transceiver includes multiple transceiver ends, wherein the receiver of one transceiver end is arranged adjacent to the transmitter of another transceiver end to form a continuous covering optical path.

[0009] As a further improvement of the present invention, the support member is provided at the bottom of the second identification unit and is spaced 2 to 3 meters apart from the second identification unit.

[0010] As a further improvement of the present invention, the support member includes a frame and a blocking net, the blocking net is provided on the frame, and one end of the frame is connected to the driving member through a rotating shaft.

[0011] As a further improvement of the present invention, the barrier is made of nylon or high-strength polyethylene.

[0012] As a further improvement of the present invention, the control unit is arranged in the access control or chassis on the dam top.

[0013] A method for preventing objects from falling from high altitude on a dam, comprising: When the control unit receives a signal indicating a falling object from the first recognition unit or the second recognition unit, it drives the action unit to unfold the support member to catch the falling object.

[0014] As a further improvement of the present invention, the action unit can deploy the support member within 0.5 seconds.

[0015] Compared with the prior art, the present invention has achieved the following technical effects: The present invention sets a first recognition unit and a second recognition unit, which work together to improve the effect of falling object warning and capture. The first recognition unit is set at the top edge of the dam to identify falling objects that may occur above. It can monitor the activities on the top of the dam in real time and capture the falling of equipment or objects in time. The second recognition unit is set outside the guardrail on the top of the dam. By forming a continuously covered laser light path, when an object passes through the laser light path, the system will immediately issue an alarm. The accuracy of the second recognition unit can achieve rapid response over a longer distance, thereby accurately detecting the occurrence of falling objects; after identifying the object falling signal, the control unit responds quickly and drives the action unit to perform corresponding actions, ensuring that the system reacts quickly within a short time after discovering the falling object, and effectively takes over the falling object, thereby minimizing the damage caused by falling objects on the top of the dam.

[0016] The present invention can effectively avoid the threat posed by falling objects to the environment and personal safety and prevent falling objects from high altitudes from falling directly into reservoirs or rivers, thereby reducing pollution to water quality and the ecological environment; in addition, the present invention is a modular design, and the independence between the first recognition unit, the second recognition unit, the control unit and the action unit enables each unit to function independently under different working conditions. In addition, the installation and adjustment of the device are relatively convenient, adapting to the specific requirements of different dams, ensuring that the device can operate stably in different environments, and providing strong guarantees for the daily operation of the dam. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side view and a front view of the overall structure of the present invention; Figure 2 It is a side view and a front view of the falling action of the present invention; Figure 3 It is a side view and a front view of the receiving object of the present invention; Figure 4 Schematic diagram of the control logic of the present invention.

[0018] Reference numerals: 1. first identification unit; 2. second identification unit; 3. control unit; 4. action unit; 4-1. driving member; 4-2. supporting member. DETAILED DESCRIPTION

[0019] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0022] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0024] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0025] It should also be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0026] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0027] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments disclosed herein. These figures are not drawn to scale; for clarity, some details are exaggerated and some details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0028] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 As shown, the present invention proposes a device for preventing objects from falling from high altitudes in dams, comprising a first recognition unit 1, a second recognition unit 2, a control unit 3 and an action unit 4, wherein the control unit 3 is connected to the first recognition unit 1, the second recognition unit 2 and the action unit 4 respectively, and the action unit 4 comprises a driving member 4-1 and a supporting member 4-2 connected to the driving member 4-1, wherein the driving member 4-1 drives the supporting member 4-2 to rotate and unfold to receive falling objects; when the control unit 3 receives a signal indicating falling objects from the first recognition unit 1 or the second recognition unit 2, it drives the action unit 4 to move and catch the falling objects.

[0030] The device of the present invention mainly consists of four core units: a first recognition unit 1, a second recognition unit 2, a control unit 3 and an action unit 4. Through the collaboration of each unit, it can monitor and intercept falling objects on the top of the dam, ensuring the operational safety of the dam, personnel safety and environmental protection.

[0031] In this embodiment, the first recognition unit 1 is a camera, which primarily monitors activities on the top of the dam through image recognition. When tools or equipment carried by a worker fall, the camera can capture the rapid fall of the object and transmit information to the control unit 3. In this embodiment, the camera is preferably an infrared camera or an optical camera. The camera is installed at the edge of the top of the dam and is directly aimed at the edge of the dam, so that the camera's field of view needs to cover the entire operating area of ​​the dam. The collected image signal is transmitted to the control unit 3 for determining the falling trajectory of the object and whether a falling object has occurred.

[0032] The cameras in the embodiment can detect the rapid movement of smaller objects and determine whether they are falling objects. The viewing angle and number of cameras can be adjusted according to actual needs to adapt to the monitoring requirements of different dam top environments.

[0033] In the embodiment, the second identification unit 2 is a laser transceiver, which emits a laser beam to form a continuously covered laser light path. When an object passes through the laser light path, the laser beam will be blocked, triggering a sensing signal, and transmitting the sensing signal to the control unit 3, thereby providing an all-weather monitoring method that does not rely on light conditions.

[0034] In the embodiment, the laser transceiver includes a transceiver, which includes a transmitting end and a receiving end. The transmitting end can emit lasers, and the receiving end can sense the entry and disappearance of light. When the transmitting end emits a laser beam, the receiving end will form a laser light path covering the entire dam top. Each receiver is paired with the transmitter to ensure that the transmission of each laser beam is not subject to external interference.

[0035] In this embodiment, the laser light path can cover the entire operating area of ​​the dam, and the laser beam is used to detect objects. The present invention uses laser beam detection to determine the position of objects, has a fast response speed, and is suitable for high-speed falling object monitoring. In addition, it is not affected by lighting and weather conditions and is applicable to various environments.

[0036] In the embodiment, the control unit 3 is used to receive signals from the first recognition unit 1 and the second recognition unit 2, perform data processing and make response decisions. When an object is detected falling, the control unit 3 sends an instruction to start the action unit 4 to intercept the falling object.

[0037] See also Figure 4 In this embodiment, the control unit 3 includes a processor, a communication module, and a feedback module. The processor is used to quickly process the signal data from the first recognition unit 1 and the second recognition unit 2 and determine whether there is a falling object based on the data. The communication module ensures smooth data transmission between the control unit 3 and the recognition unit and action unit 4. The feedback module is used to activate the action unit 4 to initiate the interception when a falling object is detected.

[0038] The control unit 3 in the embodiment has a fast processing speed and can complete signal reception and decision-making within milliseconds, thereby intercepting falling objects; the control unit of this embodiment is preferably arranged in the access control, house or independent chassis on the dam top to control the action unit.

[0039] The action unit 4 of the embodiment is used to deploy a barrier to intercept the object after detecting a falling object. It is mainly composed of a driving member 4-1 and a supporting member 4-2 and can be deployed quickly within 0.5 seconds.

[0040] See also Figure 2 and Figure 3 In the embodiment, the driving member 4-1 is preferably a motor or servo motor that drives the rotation and expansion of the support member 4-2; the support member 4-2 is composed of a frame and a net, wherein the net is a mesh structure made of high-strength nylon or polyethylene material, which has certain elasticity and tensile strength, and can effectively catch falling objects and prevent objects from continuing to fall. The net is fixed by the frame on all sides. In addition, the frame is connected to the driving member 4-1 through a rotating shaft, and the frame is driven to rotate by the driving member 4-1 until the frame is horizontal and basically parallel to the ground, becoming a working state, and the net can be used to catch falling objects.

[0041] When the support member 4-2 is in a normal state, the plane of the support member 4-2 is ensured to be naturally drooping or parallel to the surface of the dam body; when the support member 4-2 is in a working state, the support member 4-2 is set horizontally.

[0042] In this embodiment, the support member 4-2 is provided at the bottom of the second identification unit 2 and is 2 to 3 meters away from the second identification unit 2. According to the laws of physics, the time taken for a free fall from this position to the height of the bracket can be calculated using the velocity formula, that is:

[0043] When an object passes through the second recognition unit 2 and begins to fall, its velocity is essentially zero, i.e., its initial velocity v_0 = 0. The height s, the height difference between the motion system and the laser transceiver, is 2-3 meters. Substituting g = 9.8 into the formula, the time t is approximately 0.63-0.95 seconds. Since the first and second recognition units 1 and 2 fire instantaneously, the time it takes for control unit 3 to react is in the thousandth of a second. In other words, if the motion system is at a 2-meter drop from the laser transceiver, as long as the bracket can deploy to its working position within 0.63 seconds, it can catch the falling object.

[0044] The barrier material of the embodiment has the characteristics of high strength and strong weather resistance. Taking a 1kg object as an example, its speed after free fall for 1s is 9.8m / s, and its kinetic energy E=1 / 2 mv^2=48.02 joules. The barrier of the present invention can stably play a buffering role, so that falling objects will not penetrate or rebound a second time, but will be stably received, thus preventing accidentally falling objects from falling into reservoirs, riverbeds and rivers, and avoiding property losses and environmental pollution. When the present invention is used specifically, refer to Figure 1 , when the device is started, all units enter the normal state: The first recognition unit 1 continuously monitors the activities on the top of the dam and performs real-time image acquisition.

[0045] The second recognition unit 2 continuously emits laser beams to form a laser light path to monitor the dynamics of objects in the entire dam area.

[0046] The control unit 3 is in a normal state, ready to receive instructions from the control unit 3 and make decisions.

[0047] See also Figure 2 When the first identification unit or the second identification unit 2 detects the signal of a falling object, for example, when the first identification unit identifies that an object on the top of the dam is moving abnormally, it will send out an image recognition signal, and when the laser light path of the second identification unit 2 is blocked, it will send out a laser sensing signal.

[0048] Whenever a signal is sent by either the first or second recognition unit 2, it is transmitted to the control unit 3. The control unit 3 quickly analyzes the transmitted signal, determines whether the object is a falling object from high altitude, and calculates its falling location and trajectory. Based on the judgment result, the control unit 3 issues an action instruction to the action unit 4, initiating the corresponding interception action.

[0049] When the action unit 4 receives the action instruction from the control unit 3, it will start the driving member 4-1, and the driving member 4-1 will drive the support member 4-2 to rotate until an interception surface is formed to receive the falling object. The falling object is caught by the blocking net. The mesh structure can effectively absorb the kinetic energy of the object, slow down the speed of the falling object, and prevent it from causing secondary damage.

[0050] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0051] In addition, it should be understood that although this specification describes the embodiments, not every embodiment contains only one independent technical solution. This description is for clarity only. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for the purpose of illustrating the technical concept of the present invention and cannot be used to limit the scope of protection of the present invention. Any changes made based on the technical solution in accordance with the technical concept proposed by the present invention fall within the scope of protection of the claims of the present invention.

Claims

1. A device for preventing objects from falling from high altitude on a dam, characterized in that: The device comprises a first recognition unit, a second recognition unit, a control unit, and an action unit, wherein the control unit is connected to the first recognition unit, the second recognition unit, and the action unit respectively, and the action unit comprises a driving member and a supporting member connected to the driving member, wherein the driving member drives the supporting member to rotate and unfold to receive a falling object; When the control unit receives a signal indicating a falling object from the first recognition unit or the second recognition unit, it drives the action unit to move and catch the falling object.

2. A device for preventing objects from falling from high altitude on a dam according to claim 1, characterized in that: The first recognition unit includes at least one camera, wherein the camera is arranged at an edge position of the top of the dam and is aligned with the edge of the dam.

3. The device for preventing objects from falling from high altitude on a dam according to claim 1, characterized in that: The second identification unit includes a laser transceiver, which is arranged outside the guardrail at the top of the dam, wherein the laser light path formed by the laser transceiver can cover the top of the dam.

4. The device for preventing objects from falling from high altitude on a dam according to claim 3, characterized in that: The laser transceiver includes a plurality of transceiver ends, wherein the receiver of one transceiver end and the transmitter of another transceiver end are arranged adjacent to each other to form a continuous covering optical path.

5. The device for preventing objects from falling from high altitude on a dam according to claim 1, characterized in that: The support member is arranged at the bottom of the second identification unit and is spaced 2 to 3 meters apart from the second identification unit.

6. The device for preventing objects from falling from high altitude on a dam according to claim 5, characterized in that: The support member includes a frame and a blocking net. The blocking net is provided on the frame, and one end of the frame is connected to the driving member through a rotating shaft.

7. The device for preventing objects from falling from high altitude on a dam according to claim 6, characterized in that: The barrier is made of nylon or high-strength polyethylene.

8. The device for preventing objects from falling from high altitude on a dam according to claim 1, characterized in that: The control unit is arranged in the access control or the chassis on the top of the dam.

9. A method for preventing objects from falling from high altitude on a dam according to any one of claims 1 to 8, characterized in that: include: When the control unit receives a signal indicating a falling object from the first recognition unit or the second recognition unit, it drives the action unit to unfold the support member to catch the falling object.

10. A method for preventing objects from falling from high altitude on a dam according to claim 9, characterized in that: The action unit can deploy the support within 0.5s.

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