Vertical rod type radar liquid level monitoring device

Abstract

The utility model relates to a vertical rod type radar liquid level monitoring device. The device comprises a main pipe, wherein a water inlet is formed in the side wall of the bottom of the main pipe; the host module is installed in the main pipe, and the host module comprises a power supply assembly, a control circuit board connected with the power supply assembly, a radar module connected with the control circuit board and a radar lens which is located on one side of the radar module and faces the bottom of the main pipe. According to the utility model, through the modularized host module in the main pipe, the structure is compact, rapid installation and replacement are realized, the radar lens (antenna) can process and optimize the beam angle generated by the radar module and control the beam angle, the application problem of the radar in a narrow pipe diameter environment is optimized, and the measurement error caused by the fact that reflected waves collide with the wall is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring devices, in particular to a pole-type radar liquid level monitoring device. Background Art

[0002] Radar sensor is a non-contact radio wave (millimeter wave) technology, which can measure non-absorbent materials and can also be used to measure media that are difficult to touch and observe. Its measurement accuracy is very high. Usually, millimeter waves refer to the 30-300GHz frequency domain (wavelength is 1-10mm). The wavelength of millimeter waves is between centimeter waves and light waves. Millimeter wave radar has the characteristics of small size, easy integration and high spatial resolution. Millimeter wave radar has strong ability to penetrate fog, smoke, and dust, strong anti-interference ability, and has the characteristics of all-weather (except heavy rainy days) and all-day.

[0003] Millimeter-wave radar will produce a beam angle due to the nature of its frequency band and wavelength. The beam angles produced by different frequency bands and wavelengths vary greatly, which limits the application environment. This can be said to be a common phenomenon in the industry.

[0004] In addition, when millimeter-wave radar is used in a (metal) round tube with a small inner diameter, the reflected wave will hit the wall and return, resulting in inaccurate measurement. It cannot be used to measure the height (depth) changes of liquids or other materials in a small diameter tube. Due to the above problems and restrictions such as outdoor installation, it cannot be fully applied to some specific environments. Summary of the invention

[0005] To this end, the utility model provides a pole-type radar liquid level monitoring device, which can be used for monitoring water-prone points such as tunnels, underground squares, and under bridges, solving the problem that existing millimeter-wave radar sensors cannot be applied to narrow pipe diameters.

[0006] In order to solve the above technical problems, the utility model provides a pole-type radar liquid level monitoring device, comprising:

[0007] A main pipe, the side wall of which has a water inlet at the bottom;

[0008] A host module is installed inside the main pipe, and the host module includes a power supply component, a control circuit board connected to the power supply component, a radar module connected to the control circuit board, and a radar lens located on one side of the radar module and facing the bottom of the main pipe.

[0009] In an implementation manner of the present invention, a digital scale is axially arranged along the side wall of the main pipe.

[0010] In one implementation of the utility model, a mounting chassis is provided at the bottom end of the main pipe, and the mounting chassis is connected with expansion screws.

[0011] In one embodiment of the utility model, the power supply assembly includes a host battery and an aviation plug connected to the control circuit board, and the aviation plug is used to connect to an external power source.

[0012] In one embodiment of the utility model, the radar module is built into the control circuit board, and the host module also includes an internal bracket, which is surrounded by a mounting column shell, and the aviation plug, the host battery, the radar module and the radar lens are axially installed on the internal bracket in sequence.

[0013] In one implementation of the present utility model, the host module further includes a magnetic switch connected to the control circuit board.

[0014] In one implementation of the present invention, a camera module is installed on the upper portion of the main pipe.

[0015] In one embodiment of the utility model, a mounting groove is provided on the upper side wall of the main pipe, an upper bracket is installed in the mounting groove, the upper bracket includes an upper mounting panel, an intermediate mounting panel and a lower mounting panel, the upper mounting panel and the lower mounting panel are symmetrically arranged and are respectively inclined to the intermediate mounting panel, the inner side surface of the intermediate mounting panel is connected to a connecting piece that passes through the side wall of the main pipe, the camera module is installed on the upper mounting panel, and the magnetic switch is installed on the lower mounting panel.

[0016] In one implementation of the utility model, a product logo is provided on the outer side surface of the middle installation panel.

[0017] In one embodiment of the present invention, the main pipe is made of Q235B, and its outer wall is covered with a polyethylene layer.

[0018] The above technical solution of the utility model has the following advantages compared with the prior art:

[0019] The utility model discloses a pole-type radar liquid level monitoring device, which has a compact structure and can realize quick installation and replacement through a modular host module inside the main pipe. The radar lens (antenna) can process and optimize the beam angle generated by the radar module, control the beam angle, optimize the application of the radar in a narrow pipe diameter environment, and reduce the measurement error caused by the reflected wave hitting the wall.

[0020] The monitoring device provides more intuitive on-site monitoring and remote management by setting up a digital scale and a camera module.

[0021] Compared with ordinary electronic water gauges, this monitoring device can achieve zero false triggering and high-precision measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0023] Figure 1 It is a sectional three-dimensional structural diagram of a vertical pole type radar liquid level monitoring device of the utility model.

[0024] Figure 2 It is an overall structural diagram of the utility model pole-type radar liquid level monitoring device.

[0025] Figure 3 It is the appearance structure diagram of the host module of the utility model.

[0026] Figure 4 It is a structural diagram of the internal bracket of the utility model.

[0027] Description of the Figures in the Specification:

[0028] 1. Main pipe; 11. Water inlet; 12. Digital scale; 13. Mounting chassis; 14. Expansion screws; 15. Support ring;

[0029] 2. Host module; 21. Host battery; 22. Radar module; 23. Radar lens; 24. Aviation plug; 25. Internal bracket; 251. Connection plate; 252. Support column; 26. Mounting column shell; 27. Magnetic switch;

[0030] 3. Camera module; 31. Upper bracket; 32. Upper mounting panel; 33. Middle mounting panel; 34. Lower mounting panel; 35. Product logo. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0032] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0033] In the present utility model, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present utility model, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0035] Reference Figures 1 to 3 As shown, a pole-type radar liquid level monitoring device of the utility model comprises:

[0036] A main pipe 1, a water inlet 11 is provided on the side wall at the bottom thereof;

[0037] The host module 2 is installed inside the main pipe 1, and includes a power supply component, a control circuit board (PCBA) connected to the power supply component, a radar module 22 connected to the control circuit board, and a radar lens 23 (lens antenna) located on one side of the radar module 22 and facing the bottom of the main pipe 1.

[0038] The radar lens 23 is coaxially arranged with the main pipe 1, and the radar module 22 is located on one side of the radar lens 23. When it rains, rainwater enters the internal cavity of the main pipe 1 through the water inlet 11 and can be detected by the radar module 22. The radar lens 23 (antenna) can process and optimize the beam angle generated by the radar module 22 and control the beam angle to reduce great interference in the main pipe 1. In addition, the radar lens 23 not only plays a role in beam transmission, but also has a certain filtering effect when receiving.

[0039] In one embodiment, a digital scale 12 is axially arranged along the side wall of the main pipe 1. The digital scale 12 can intuitively check the real-time liquid level height.

[0040] In one embodiment, the bottom end of the main pipe 1 is provided with a mounting chassis 13, and the mounting chassis 13 is connected with expansion screws 14. The entire monitoring device can be placed on a hard road surface / platform that is prone to water accumulation, and is firmly fixed by the expansion screws 14.

[0041] In one embodiment, the power supply assembly includes a host battery 21 and an aviation plug 24 connected to the control circuit board, and the aviation plug 24 is used to connect to an external power source.

[0042] Specifically, the aviation plug 24 can be connected to an external power source (220V) or a solar panel to power the host module 2. After the built-in host battery 21 reaches the end of its service life (approximately 3 years), it can continuously provide power, greatly reducing the use cost and maintenance cost.

[0043] In one embodiment, the radar module 22 is built into the control circuit board, and the host module 2 also includes an internal bracket 25, and the internal bracket 25 is circumferentially provided with a mounting column shell 26, and the aviation plug 24, the host battery 21, the radar module 22 and the radar lens 23 are axially installed in the internal bracket 25 in sequence.

[0044] A support ring is installed inside the main pipe 1 to ensure that the bottom of the host module 2 is supported on the support ring 15. The installation column shell 26 and the internal bracket 25 can provide a stable installation structure to ensure the installation stability and reasonable spatial layout of components such as the radar module 22, the circuit board and the radar lens 23, which is convenient for installation and maintenance. Through the internal bracket 25, a certain distance is maintained between the radar lens 23 and the radar module 22 (the distance affects the radar beam angle).

[0045] For example, refer to Figure 4 As shown, two internal brackets 25 are provided, each of the internal brackets 25 includes a connecting disk 251 and a plurality of supporting columns 252 distributed circumferentially along the connecting disk 251, wherein the supporting columns 252 of one internal bracket 25 can be used to install a circuit board, and a supporting partition is provided between the plurality of supporting columns 252 of the other internal bracket 25 to install the host battery 21, and the radar lens 23 or the aviation plug 24 is installed on the connecting disk 251 corresponding to the internal bracket 25, and the two connecting disks 251 are respectively connected to the two axial end surfaces of the mounting column shell 26 by screws.

[0046] In one embodiment, the host module 2 further includes a magnetic switch 27 connected to the control circuit board. The host module 2 can be activated by adsorbing the magnetic switch 27 with a magnet.

[0047] It can be understood that the radar module 22 includes a radar signal transceiver, and the control circuit board also includes a microprocessor, an analog-to-digital converter (ADC), a communication interface module, a power management module, etc. The analog-to-digital converter can convert the analog signal obtained by the radar module 22 into a digital signal, and the digital signal is processed and analyzed by the microprocessor to obtain the liquid level information; the communication interface module can adopt Wi-Fi, 4G, NB-IoT, Cat1, Bluetooth, etc., or other wireless communication technologies, and can upload the liquid level information to the cloud, Internet of Things platform or local server, so as to facilitate remote monitoring and data analysis; the integrated power management module is used for the normal operation of the equipment under different power states and the efficient use of power.

[0048] Exemplarily, the radar module 22 uses an 80GHz millimeter-wave radar to monitor the height of the liquid entering from the water inlet 11 through a signal transceiver. The monitored data can be uploaded to the Internet of Things or a big data platform through a control circuit board for detailed analysis, display and early warning of the data.

[0049] Specifically, the integrated radar lens 23 (antenna) processes and optimizes the beam angle generated by the 80GHz radar module 22, and can control the beam angle to within 2°, thereby greatly reducing interference in the main pipe 1. The radar lens 23 not only plays a role in beam transmission, but also has a certain filtering effect when receiving.

[0050] In one embodiment, a camera module 3 is installed on the upper part of the main pipe 1. A high-definition 2K camera unit camera can be used. The camera can monitor the surrounding environment of the device in real time to prevent the occurrence of false triggering.

[0051] In one embodiment, a mounting groove is provided on the upper side wall of the main pipe 1, and an upper bracket 31 is installed in the mounting groove. The upper bracket 31 includes an upper mounting panel 32, an intermediate mounting panel 33 and a lower mounting panel 34. The upper mounting panel 32 and the lower mounting panel 34 are symmetrically arranged and are respectively inclined to the intermediate mounting panel 33. The inner side of the intermediate mounting panel 33 is connected with a connector (bolt) penetrating the side wall of the main pipe 1. The camera module 3 is installed on the upper mounting panel 32, and the magnetic switch 27 is installed on the lower mounting panel 34. The upper mounting panel 32 and the lower mounting panel 34 are connected to the side wall of the main pipe 1 on one side of the mounting groove by screws.

[0052] In one embodiment, a product logo 35 (Logo) is disposed on the outer side of the middle installation panel 33 .

[0053] The upper mounting slot and bracket design not only optimizes the appearance of the device, but also facilitates the installation of the camera module 3 and the magnetic switch 27.

[0054] In one embodiment, the main pipe 1 has an outer diameter of 114 mm and a wall thickness of 2 mm, and is made of Q235B steel. The outer wall is treated with electrophoretic spraying and covered with a polyethylene layer. This structural design is not only low-cost and easy to construct, but also can significantly extend the service life. In terms of cost control, the use of 80GHz radar technology achieves lower costs than 120GHz. In addition, the overall structural design ensures that the protection level reaches IP68 (1 meter underwater for 7 days) without affecting the 4G / NB signal, and can be fully immersed in use.

[0055] For example, the radar module 22 may adopt RUDA LDRR04S or SinCody LD8001H.

[0056] The device uses the beam angle generated by the 80GHz millimeter wave radar and the radar lens 23 to optimize the beam angle, reduce interference and accurately measure the liquid level change. First, it controls the distance between the radar lens 23 and the radar module 22 and the shape of the radar lens 23 (set as needed), and secondly, it blocks and absorbs the scattered radar waves through special absorbing materials (EPE). Through these methods, useful return waves are accepted and the most accurate data is measured. Through the control circuit board processing, it can be uploaded to the Internet of Things or big data platform in real time for data analysis, display and early warning.

[0057] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A pole-type radar liquid level monitoring device, characterized in that: include: A main pipe (1) having a water inlet (11) formed on a side wall at the bottom thereof; A host module (2) is installed inside the main pipe (1), the host module (2) comprising a power supply component, a control circuit board connected to the power supply component, a radar module (22) connected to the control circuit board, and a radar lens (23) located on one side of the radar module (22) and facing the bottom of the main pipe (1).

2. A pole-type radar liquid level monitoring device according to claim 1, characterized in that: A digital scale (12) is axially arranged along the side wall of the main pipe (1).

3. The pole-type radar liquid level monitoring device according to claim 1, characterized in that: A mounting chassis (13) is provided at the bottom end of the main pipe (1), and an expansion screw (14) is connected to the mounting chassis (13).

4. The pole-type radar liquid level monitoring device according to claim 1, characterized in that: The power supply assembly comprises a host battery (21) and an aviation plug (24) connected to the control circuit board, wherein the aviation plug (24) is used to connect to an external power source.

5. The pole-type radar liquid level monitoring device according to claim 4, characterized in that: The radar module (22) is built into the control circuit board, and the host module (2) further comprises an internal bracket (25), the internal bracket (25) is provided with a mounting column shell (26) around its circumference, and the aviation plug (24), the host battery (21), the radar module (22) and the radar lens (23) are axially mounted on the internal bracket (25) in sequence.

6. The pole-type radar liquid level monitoring device according to claim 1, characterized in that: The host module (2) also includes a magnetic switch (27) connected to the control circuit board.

7. The pole-type radar liquid level monitoring device according to claim 6, characterized in that: A camera module (3) is installed on the upper part of the main pipe (1).

8. The pole-type radar liquid level monitoring device according to claim 7, characterized in that: An installation groove is provided on the upper side wall of the main pipe (1), and an upper bracket (31) is installed in the installation groove. The upper bracket (31) comprises an upper installation panel (32), an intermediate installation panel (33) and a lower installation panel (34). The upper installation panel (32) and the lower installation panel (34) are symmetrically arranged and are respectively inclined to the intermediate installation panel (33). The inner side surface of the intermediate installation panel (33) is connected to a connecting piece that passes through the side wall of the main pipe (1). The camera module (3) is installed on the upper installation panel (32), and the magnetic switch (27) is installed on the lower installation panel (34).

9. The pole-type radar liquid level monitoring device according to claim 8, characterized in that: A product logo (35) is provided on the outer side surface of the middle installation panel (33).

10. The pole-type radar liquid level monitoring device according to claim 1, characterized in that: The main pipe (1) is made of Q235B, and its outer wall is covered with a polyethylene layer.

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