An unmanned aerial vehicle emergency flow measuring device

Abstract

The utility model provides a kind of unmanned plane emergency flow measuring device, belong to unmanned plane technical field, the emergency flow measuring device includes boom assembly, float and vortex shedding flowmeter, boom assembly is made of fixed rod, middle pole and bottom bar connected together in turn, the top edge of fixed rod is provided with boss, the axis of float is provided with inner hole, the top of float is plane, float is set on fixed rod and with the bottom of boss resistance, vortex shedding flowmeter is set on middle pole, the bottom of bottom bar is provided with echo sounder fixture, can hold echo sounder detector, unmanned plane will be suspended in the emergency flow measuring device bottom, fly to river surface and lower the emergency flow measuring device to water surface, vortex shedding flowmeter and echo sounder detector of float lower part are measured under water, compared with the way that unmanned plane carries non-contact equipment, solve the interference caused by environmental factors to the measurement process of non-contact equipment, such as rain, snow, fog, light, shelter, etc., lead to the problem of inaccurate measurement result.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and more specifically, to an emergency flow measurement device for UAVs. Background Technology

[0002] Emergency flow measurement equipment is a device that can measure river flow under special circumstances. Existing emergency flow measurement equipment mainly consists of non-contact devices mounted on drones. Common non-contact measurement methods include radar, laser, and cameras. These methods can calculate flow by remotely measuring parameters such as water surface height, surface velocity, and water surface morphology without contacting the water. However, non-contact measurements are significantly affected by environmental factors. For example, laser measurement methods may be limited by weather conditions such as rain, snow, and fog; camera measurement methods may be affected by light and obstructions; radar measurement methods utilize the Doppler effect, emitting electromagnetic waves onto the water surface. These waves are scattered by the moving water surface, creating echoes, and the flow velocity is calculated by the offset between the two. However, wind and rain can create interfering water waves. These environmental factors can interfere with the measurement process, leading to inaccurate results. Utility Model Content

[0003] To overcome the above deficiencies, this utility model provides an emergency flow measurement device for unmanned aerial vehicles (UAVs) to solve the aforementioned problems.

[0004] This utility model is implemented as follows:

[0005] An emergency flow measurement device for unmanned aerial vehicles (UAVs) includes: a boom assembly, a float, and a vortex flow meter. The boom assembly consists of a fixed rod, a middle rod, and a bottom rod connected in sequence. A boss is provided at the top edge of the fixed rod. An inner hole is opened at the axis of the float. The top of the float is flat. The float is mounted on the fixed rod and abuts against the bottom of the boss. The vortex flow meter is mounted on the middle rod.

[0006] In one embodiment of this utility model, a filter cage is provided at the inlet of the vortex flow meter, and a tail cover is provided at the outlet of the vortex flow meter.

[0007] In one embodiment of this utility model, the top and bottom of the filter cage are symmetrically provided with fixing rings, and a ball bearing is provided at the intersection of the fixing ring and the middle rod. The ball bearing is waterproof.

[0008] In one embodiment of this utility model, a rudder is provided at the tail cover.

[0009] In one embodiment of this utility model, a lifting eye screw is provided at the top of the fixing rod, and the lifting eye screw is connected to the suspension rope on the drone.

[0010] In one embodiment of this utility model, a locking nut is provided on the fixing rod, and the top of the locking nut abuts against the bottom of the float.

[0011] In one embodiment of this utility model, the diameter of the middle rod is smaller than the diameters of the fixed rod and the bottom rod.

[0012] In one embodiment of this utility model, a sonar clamp is provided at the bottom of the base rod, and the sonar clamp can hold a sonar detector.

[0013] The beneficial effects of this utility model are as follows: This emergency flow measurement device consists of a boom assembly, a float, and a vortex flow meter. The emergency flow measurement device is suspended at the bottom by a drone, which flies to the river surface and lowers the device onto the water. The vortex flow meter and sonar detector at the bottom of the float perform underwater measurements. Compared with drones carrying non-contact equipment, this method solves the problem of inaccurate measurement results caused by environmental factors such as rain, snow, fog, light, and obstructions during the measurement process of non-contact equipment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the structure of the emergency flow measurement device provided for an embodiment of this utility model;

[0016] Figure 2 A cross-sectional view of the emergency flow measurement device provided for an embodiment of the utility model;

[0017] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0018] Figure 4 A schematic diagram of the structure of the vortex flowmeter provided for an embodiment of this utility model.

[0019] In the diagram: 1. Float; 11. Inner hole; 2. Boom assembly; 21. Eye bolt; 22. Fixing rod; 221. Boss; 23. Middle rod; 24. Bottom rod; 25. Locking nut; 3. Vortex flow meter; 31. Ball bearing; 32. Filter cage; 321. Fixing ring; 33. Tail cover; 34. Rudder; 35. Turbofan; 36. Sensor; 37. Inlet; 38. Outlet; 4. Sonar clamp. Detailed Implementation

[0020] 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.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] like Figure 1-4 As shown, this utility model provides an emergency flow measurement device for unmanned aerial vehicles, including a boom assembly 2, a float 1, and a vortex flow meter 3. The boom assembly 2 consists of a fixed rod 22, a middle rod 23, and a bottom rod 24 connected in sequence. A boss 221 is provided at the top edge of the fixed rod 22. An inner hole 11 is opened at the axis of the float 1. The top of the float 1 is flat. The float 1 is set on the fixed rod 22 and abuts against the bottom of the boss 221. The vortex flow meter 3 is set on the middle rod 23.

[0023] In this embodiment, the float 1 is set at one end of the boom assembly 2 near the boss 221. A locking nut 25 is provided on the fixed rod 22. The top of the locking nut 25 abuts against the bottom of the float 1 to prevent the float 1 from moving on the boom assembly 2 and affecting the stability of the structure. In addition, the float 1 is umbrella-shaped, which can make the emergency flow measurement device lie more stably on the water surface and increase the measurement accuracy of the vortex flow meter 3.

[0024] In this embodiment, a filter cage 32 is provided at the inlet 37 of the vortex flow meter 3, and a tail cover 33 is provided at the outlet 38 of the vortex flow meter 3. The filter cage 32 and the tail cover 33 filter out larger objects such as aquatic plants, fish and shrimp in the water, preventing them from entering the vortex flow meter 3 and causing blockage.

[0025] In this embodiment, the top and bottom of the filter cage 32 are symmetrically provided with fixing rings 321, and a ball bearing 31 is provided at the intersection of the fixing ring 321 and the middle rod 23. A rudder 34 is provided at the tail cover 33. Through the above arrangement, the inlet 37 of the vortex flow meter 3 can be quickly rotated to the direction of water flow, so as to avoid measurement deviation caused by the inconsistency between the direction of water flow and the vortex flow meter 3.

[0026] As a preferred embodiment, the ball bearing 31 is selected as a waterproof type to avoid the loss of lubricating oil in ordinary bearings in water, which would increase the friction of the bearing and thus affect the rotation of the vortex flow meter 3 on the main shaft.

[0027] As a preferred embodiment, the diameter of the middle rod 23 is smaller than the diameter of the fixed rod 22 and the bottom rod 24. The diameter difference can restrict the vortex flow meter 3 to the middle rod 23, preventing the vortex flow meter 3 from falling off due to long-term use.

[0028] In this embodiment, a lifting eye screw 21 is provided at the top of the fixed rod 22. The lifting eye screw 21 is connected to the suspension rope on the drone. When measuring underwater, the drone hovers in the air and pulls the emergency flow measurement device to prevent the emergency flow measurement device from moving on the water surface with the direction of water flow and affecting the measurement of the vortex flow meter 3.

[0029] In this example, a sonar clamp 4 is provided at the bottom of the base rod 24, which can clamp the corresponding model of sonar detector as needed.

[0030] Specifically, the working principle of this UAV emergency flow measurement device is as follows: The UAV suspends the emergency flow measurement device at the bottom via a suspension rope, flies to the river surface, and lowers the device onto the water surface. The umbrella-shaped float 1 lies on the water surface, while the vortex flow meter 3 and sonar detector at the bottom of the float 1 are underwater. The tube rotation design of the vortex flow meter 3 and the rudder 34 set at the outlet 38 ensure that the inlet 37 always faces the direction of the water flow. At the same time, the filter cage 32 at the inlet 37 and the tail cover 33 at the outlet 38 can filter out larger objects such as aquatic plants, fish, and shrimp in the water, preventing them from entering the vortex flow meter 3 and causing blockage. The sonar detector at the bottom can detect the water depth. This underwater contact measurement method solves the problem that non-contact equipment is affected by environmental factors, which can cause inaccurate measurement results.

[0031] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. An emergency flow measurement device for unmanned aerial vehicles (UAVs), characterized in that, include: The assembly includes a boom assembly (2), a float (1), and a vortex flow meter (3). The boom assembly (2) consists of a fixed rod (22), a middle rod (23), and a bottom rod (24) connected together in sequence. A boss (221) is provided at the top edge of the fixed rod (22). An inner hole (11) is provided at the center of the float (1). The top of the float (1) is flat. The float (1) is set on the fixed rod (22) and abuts against the bottom of the boss (221). The vortex flow meter (3) is set on the middle rod (23).

2. The UAV emergency flow measurement device according to claim 1, characterized in that, A filter cage (32) is provided at the inlet (37) of the vortex flow meter (3), and a tail cover (33) is provided at the outlet (38) of the vortex flow meter (3).

3. The UAV emergency flow measurement device according to claim 2, characterized in that, The filter cage (32) is symmetrically provided with fixing rings (321) at the top and bottom. A ball bearing (31) is provided at the intersection of the fixing ring (321) and the middle rod (23). The ball bearing (31) is waterproof.

4. The UAV emergency flow measurement device according to claim 2, characterized in that, A rudder (34) is provided at the tail cover (33).

5. The UAV emergency flow measurement device according to claim 1, characterized in that, The top of the fixing rod (22) is provided with a lifting eye screw (21), which is connected to the suspension rope on the drone.

6. The UAV emergency flow measurement device according to claim 1, characterized in that, A locking nut (25) is provided on the fixing rod (22), and the top of the locking nut (25) abuts against the bottom of the float (1).

7. The UAV emergency flow measurement device according to claim 1, characterized in that, The diameter of the middle rod (23) is smaller than the diameter of the fixed rod (22) and the bottom rod (24).

8. The UAV emergency flow measurement device according to claim 1, characterized in that, The bottom of the base rod (24) is provided with a sonar clamp (4), which can hold the sonar detector.

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