River surface flow rate measuring device

Abstract

The utility model discloses a river surface flow velocity measuring device, including support frame and setting on the flow velocity measuring unit of support frame, the flow velocity measuring unit is including first casing and second casing, first casing sets up on the support frame, second casing is connected in first casing, the signal processing module is provided with in first casing, the radar antenna is provided with in second casing, and the outer end surface of second casing is the curved surface that protrudes outward, the signal output end of radar antenna is connected in the signal input end of signal processing module, and the signal output end of signal processing module exports flow velocity information. The utility model can optimize the focusing effect of radar wave, improves the stability of water surface echo signal reception to effectually promote the applicability and reliability of measuring device.

Description

Technical Field

[0001] This utility model relates to the field of velocity measurement, specifically to a device for measuring the surface velocity of a river. Background Technology

[0002] River surface velocity is a crucial parameter in hydrological monitoring and water resource management, playing a vital role in flood warning, water resource allocation, and river ecological protection. Currently, river surface velocity measurement primarily relies on manual current meters or fixed radar velocimeters. Traditional manual current meter measurements require operators to reach the measurement point and acquire data using propeller-type, acoustic, or electromagnetic current meters. This method is not only inefficient and physically demanding but also poses safety risks to personnel, especially during flood season or in complex river conditions.

[0003] Currently, non-contact measurement technologies are gradually being adopted. For example, non-contact radar velocity measuring devices calculate flow velocity by emitting electromagnetic waves and receiving echo signals reflected from the water surface, offering advantages such as convenient installation and no need for contact with the water. However, existing non-contact radar velocity measuring devices typically employ planar antenna designs, which often struggle to focus effectively or stably receive water surface echo signals in complex river channels or harsh environments. This results in significant fluctuations in velocity measurement results, affecting measurement accuracy and reliability. Therefore, to address these issues, a new river surface velocity measuring device is urgently needed that can optimize radar wave focusing and improve the stability of water surface echo signal reception, thereby effectively enhancing the applicability and reliability of the measuring device. Utility Model Content

[0004] In view of this, the purpose of this utility model is to overcome the defects in the prior art and provide a river surface velocity measuring device that can optimize the focusing effect of radar waves and improve the stability of water surface echo signal reception, thereby effectively improving the applicability and reliability of the measuring device.

[0005] The present invention relates to a river surface velocity measuring device, comprising a support frame and a velocity measuring unit disposed on the support frame;

[0006] The flow velocity measurement unit includes a first housing and a second housing; the first housing is mounted on a support frame, and the second housing is connected to the first housing; a signal processing module is disposed inside the first housing, and a radar antenna is disposed inside the second housing, and the outer end face of the second housing is a convex curved surface; the signal output terminal of the radar antenna is connected to the signal input terminal of the signal processing module, and the signal output terminal of the signal processing module outputs flow velocity information.

[0007] Furthermore, the cross-section of the curved surface is arc-shaped.

[0008] Furthermore, the inner end face of the second housing is made of waterproof material.

[0009] Furthermore, a heat sink is also provided inside the first housing, and heat dissipation holes are provided on the side end of the first housing.

[0010] Furthermore, the support frame includes a support rod and a tripod disposed at the lower end of the support rod; the first housing is fixedly disposed at the upper end of the support rod by fasteners.

[0011] Furthermore, the support rod is a telescopic rod.

[0012] Furthermore, the tripod is a collapsible tripod.

[0013] The beneficial effects of this utility model are as follows: The river surface velocity measuring device disclosed in this utility model, by setting up a support frame, a first housing and a second housing, and separating the signal processing module and the radar antenna in the first housing and the second housing respectively, and designing an outwardly protruding curved surface structure at the outer end of the second housing, not only optimizes the focusing effect of radar waves and improves the stability of water surface echo signal reception, but also simplifies the internal layout and effectively improves the applicability and reliability of the measuring device. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the front-end structure of the flow velocity measurement unit of this utility model;

[0017] Figure 3 This is a schematic diagram of the rear structure of the flow velocity measurement unit of this utility model;

[0018] Among them, 1-fastener, 2-tripod, 3-first housing, 4-telescopic rod, 5-second housing, 6-arc-shaped radar dome, 7-waterproof end face. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings, as shown in the figures:

[0020] The present invention relates to a river surface velocity measuring device, comprising a support frame and a velocity measuring unit disposed on the support frame;

[0021] The flow velocity measurement unit includes a first housing 3 and a second housing 5. The first housing 3 is mounted on a support frame, and the second housing 5 is connected to the first housing 3. A signal processing module is housed inside the first housing 3, and a radar antenna is housed inside the second housing 5. The outer end face of the second housing 5 is a convex curved surface. The signal output terminal of the radar antenna is connected to the signal input terminal of the signal processing module, and the signal output terminal of the signal processing module outputs flow velocity information. The radar antenna is a conventional millimeter-wave radar antenna, specifically a 77GHz PCB array antenna (4 receive, 1 transmit). The signal processing module uses a conventional four-layer PCB circuit board, which includes the existing TI AWR1843 chip, which will not be described in detail here. The signal processing module processes the radar antenna signal to obtain the magnitude and direction of the river's flow velocity. This flow velocity information can be wirelessly transmitted via a wireless communication module or wiredly transmitted in real-time via an output interface (such as a USB interface) to an external device (such as a host computer or PC).

[0022] This invention enhances the focusing and reception stability of water surface echo signals by placing the radar antenna inside the second housing 5, which has an outwardly convex outer end face; at the same time, the signal processing module is independently placed inside the first housing 3, which optimizes the internal layout, improves heat dissipation and maintenance convenience, and enhances measurement accuracy and environmental adaptability of the device.

[0023] In this embodiment, the cross-section of the curved surface is arc-shaped, making the curved surface an arc-shaped radar dome 6. The curved surface of the outer end face of the second housing 5 adopts an arc-shaped cross-section structure design, which is conducive to further focusing and uniformly distributing the radar beam, improving the ability to capture river surface echo signals, thereby enhancing measurement accuracy and stability, and also reducing measurement errors caused by water flow and wind interference to the housing.

[0024] In this embodiment, the inner end face of the second housing 5 is made of waterproof material, making it a waterproof end face 7. The waterproof material is made of ABS engineering plastic with an IP67 rating and a wall thickness of 3mm. Using waterproof material on the inner end face of the second housing 5 effectively improves the overall waterproof performance of the device, preventing rainwater or moisture from intruding and affecting the normal operation of the internal radar antenna, thereby extending the equipment's service life, ensuring measurement accuracy and long-term operational stability, and adapting to complex and changing outdoor river environments.

[0025] In this embodiment, a heat sink is also provided inside the first housing 3, and heat dissipation holes are provided on the side end of the first housing 3. The heat sink is an aluminum finned heat sink (80×60×15mm), which can quickly dissipate the heat generated by components such as the signal processing module, preventing performance degradation or damage due to overheating, such as reduced measurement accuracy or signal distortion. This excellent heat dissipation design ensures that the device can operate stably even under long-term continuous operation, such as in hot summers or during high-intensity measurement tasks, guaranteeing the accuracy and reliability of the measurement data.

[0026] In this embodiment, the support frame includes a support rod and a tripod 2 disposed at the lower end of the support rod; the first housing 3 is fixedly disposed at the upper end of the support rod by fasteners 1. The fasteners 1 are 304 stainless steel quick-release bolts (M8 specification), ensuring convenient installation and disassembly of the device in different riverbank environments, enabling rapid adaptation to adjustments in various measurement positions, and the material is corrosion-resistant, ensuring the long-term reliability of the device.

[0027] The support frame consists of a support rod and a tripod 2, and the first housing 3 is fixed to the upper end of the support rod by fasteners 1. This not only improves the overall stability and wind resistance of the device, but also makes it easy to quickly adjust the installation height and angle according to measurement needs, thereby improving the adaptability and deployment flexibility of the equipment and meeting the measurement needs of different river environments.

[0028] In this embodiment, the support rod is a telescopic rod 4. The telescopic rod 4 is a nested stainless steel tube with a telescopic range of 1.2-2.5m.

[0029] The support rod adopts a telescopic rod 4-structure, which makes it easy to flexibly adjust the height of the device according to different river widths, water levels or measurement needs, so as to achieve a better measurement angle and position. This allows the millimeter-wave radar antenna to be accurately aimed at specific areas of the river for speed measurement, improving measurement accuracy and applicability. At the same time, it is easy to carry and deploy, enhancing the convenience and flexibility of field operations.

[0030] In this embodiment, the tripod 2 is a retractable tripod. The retractable tripod uses an aviation-grade aluminum folding structure with an unfolded span of ≥80cm, providing stable support for the speed measuring device and preventing the device from shaking due to uneven ground, which could affect the accuracy of the speed measurement data.

[0031] The tripod 2 features a collapsible structure, allowing for quick folding and storage when not in use, reducing its size and facilitating transportation and carrying. At the same time, it can be quickly deployed and stably supported for measuring devices during field operations, improving installation efficiency and flexibility, thereby adapting to the flow velocity measurement needs in different terrain environments.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for measuring river surface velocity, characterized in that: Includes a support frame and a flow velocity measurement unit mounted on the support frame; The flow velocity measurement unit includes a first housing and a second housing; the first housing is mounted on a support frame, and the second housing is connected to the first housing; a signal processing module is disposed inside the first housing, and a radar antenna is disposed inside the second housing, and the outer end face of the second housing is a convex curved surface; the signal output terminal of the radar antenna is connected to the signal input terminal of the signal processing module, and the signal output terminal of the signal processing module outputs flow velocity information.

2. The river surface velocity measuring device according to claim 1, characterized in that: The cross-section of the curved surface is arc-shaped.

3. The river surface velocity measuring device according to claim 1, characterized in that: The inner end face of the second housing is made of waterproof material.

4. The river surface velocity measuring device according to claim 1, characterized in that: The first housing is also equipped with a heat sink, and heat dissipation holes are provided on the side of the first housing.

5. The river surface velocity measuring device according to claim 1, characterized in that: The support frame includes a support rod and a tripod disposed at the lower end of the support rod; the first housing is fixedly disposed at the upper end of the support rod by fasteners.

6. The river surface velocity measuring device according to claim 5, characterized in that: The support rod is a telescopic rod.

7. The river surface velocity measuring device according to claim 5, characterized in that: The tripod is a collapsible tripod.

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