Triangular pyramid radar liquid level monitoring device

Abstract

The utility model relates to radar monitoring technical field, concretely is triangular pyramid radar liquid level monitoring equipment, including triangular pyramid antenna, radar module, treater, display screen and remote communication module, triangular pyramid antenna is hollow structure, promotes microwave signal emission directionality and receiving sensitivity, bottom is equipped with probe, enhances signal stability in complex medium, triangular pyramid antenna top installs control box, inside integrated radar module, treater and remote communication module, outside sets up display screen, realizes local information real -time viewing, and control box is equipped with power module and circuit manager in, guarantees system stable operation, top is equipped with the connecting pipe of thread groove, and it is convenient to install fixed, side surface configuration power interface and data interface, support external power supply and data interaction, and this technical scheme has compact structure, high measurement accuracy, strong anti -interference ability, convenient installation and maintenance and so on, is applicable to the liquid level monitoring application under a variety of complex working conditions.

Description

Technical Field

[0001] This utility model relates to the field of radar monitoring technology, specifically to a triangular cone radar liquid level monitoring device. Background Technology

[0002] In industrial production, liquid level measurement is a crucial step in ensuring production safety, improving automation levels, and achieving process control. Traditional liquid level monitoring equipment mainly includes float-type, capacitive, and ultrasonic types, but these methods generally suffer from low accuracy, susceptibility to the characteristics of the medium, and frequent maintenance, making it difficult to meet the stable measurement requirements under complex operating conditions.

[0003] In recent years, radar level gauges have been widely used in petroleum, chemical, and water treatment industries due to their advantages such as non-contact measurement, strong anti-interference capability, and wide adaptability. However, existing radar level gauges generally adopt horn-shaped or planar antenna structures, which have problems such as poor signal transmission directionality, susceptibility to interference from tank internal structures, and unstable measurement in complex media (such as high-viscosity, highly corrosive liquids). In addition, most devices have low integration, loose module distribution, inconvenient installation and maintenance, and lack remote monitoring capabilities, which limits their application in intelligent systems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a triangular cone radar liquid level monitoring device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: The triangular cone radar liquid level monitoring device of this utility model includes:

[0006] A triangular pyramidal antenna is used to transmit and receive microwave signals;

[0007] The radar module, electrically connected to the triangular pyramidal antenna, is used to process the received echo signal and calculate the liquid level height.

[0008] The processor, connected to the radar module, is responsible for controlling the operation of the entire system and data processing.

[0009] The display screen, electrically connected to the processor, is used to display the current liquid level information and other status parameters;

[0010] A remote communication module, electrically connected to the processor, is used to transmit monitoring data to a remote server or mobile terminal.

[0011] Preferably, the triangular pyramidal antenna has a hollow structure, and the inner wall of the triangular pyramidal antenna is silver-plated.

[0012] More preferably, the bottom of the triangular pyramidal antenna is provided with a probe.

[0013] Preferably, a control box is mounted on the top of the triangular cone antenna, the radar module, processor, and remote communication module are installed inside the control box, and the display screen is mounted on the outer wall of the control box.

[0014] Preferably, a power module is installed inside the control box, and the power module is electrically connected to the processor, radar module, remote communication module and display screen through a circuit manager.

[0015] More preferably, a connecting pipe is installed on the top of the control box, and the connecting pipe is provided with a threaded groove.

[0016] Preferably, the control box has a power interface and a data interface on its side, the power interface being adapted to the power module and the data interface being adapted to the processor.

[0017] Compared with the prior art, the present invention provides a triangular cone radar liquid level monitoring device, which has the following beneficial effects:

[0018] Through structural innovation and optimized material design, the accuracy, stability, and applicability of radar liquid level measurement have been significantly improved. The device employs a hollow triangular pyramidal antenna with a silver-plated inner wall, effectively enhancing microwave signal reflection efficiency and transmission capability, improving signal transmission directionality and receiving sensitivity, thereby achieving more precise liquid level measurement.

[0019] Furthermore, the triangular pyramidal antenna is equipped with a probe at its bottom, which can assist signal propagation in high-viscosity or complex media, improve measurement stability, and broaden the application scenarios of the equipment. A control box is integrated at the top of the antenna, housing the radar module, processor, and remote communication module. The display screen is located on the outer wall of the control box, which not only improves the overall integrity and protection of the equipment but also facilitates on-site viewing and operation. Attached Figure Description

[0020] Figure 1 This is a top view of the device structure of this utility model;

[0021] Figure 2 This is a side view of the device structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the triangular pyramid antenna of this utility model;

[0023] Figure 4 This is a schematic diagram of the radar monitoring system structure of this utility model;

[0024] In the diagram: 1. Triangular cone antenna; 2. Control box; 3. Probe; 4. Display screen; 5. Data interface; 6. Power interface; 7. Connecting pipe; 8. Threaded groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 The triangular cone radar liquid level monitoring device of this utility model includes:

[0027] Triangular pyramidal antenna 1, used for transmitting and receiving microwave signals;

[0028] The radar module, electrically connected to the triangular pyramidal antenna 1, is used to process the received echo signal and calculate the liquid level height.

[0029] The processor, connected to the radar module, is responsible for controlling the operation of the entire system and data processing.

[0030] Display screen 4, electrically connected to the processor, is used to display the current liquid level information and other status parameters;

[0031] A remote communication module, electrically connected to the processor, is used to transmit monitoring data to a remote server or mobile terminal.

[0032] Triangular pyramid antenna 1. Signal transmission and reception principle

[0033] The triangular cone antenna 1 consists of a hollow structure formed by three metal triangular plates. The bottom probe 3 serves as the feed source to excite microwave signals. After multiple reflections within the inner wall of the cone, the microwaves form a narrow beam of directional radiation, which is then vertically projected onto the liquid surface. The echo signal is focused by the antenna and received by the probe 3. Spatial filtering characteristics are used to suppress sidelobe interference and improve signal purity.

[0034] Radar module liquid level calculation principle

[0035] Radar modules typically employ Frequency Modulated Continuous Wave (FMCW) technology, generating a linearly frequency-modulated signal by sweeping the frequency bandwidth. The frequency difference between the transmitted and echo signals is analyzed using a Fast Fourier Transform (FFT), and the liquid level distance is calculated using the formula d = c⋅Δf / 2⋅Δf⋅T (where c is the speed of light and T is the modulation period). This technology utilizes the linear relationship between phase difference and distance to achieve millimeter-level resolution.

[0036] The processor is the core of the system:

[0037] System control: The processor is responsible for the operation and control of the entire system, including starting / stopping the radar module, managing data flow, and executing computing tasks.

[0038] Data processing: The raw data transmitted from the radar module is further processed and converted into user-friendly liquid level information.

[0039] Interface Management: Communicates with external devices through data interface 5, supporting remote monitoring and data transmission.

[0040] The processor and radar module in this technical solution can adopt the mature equipment structure of the relevant equipment field. The processor is such as STM32 series, NXTi.MX RT series crossover processor or TI Sitara AM335x series. The radar module in this technical solution is such as SITRANS LR250 series, VEGAPULS 64 series or Micropilot FMR10 series.

[0041] Principles of Remote Communication and Display

[0042] Display screen 4 provides real-time display: It communicates with the processor via SPI or I2C interface to display parameters such as liquid level, waveform curve, and alarm status in a graphical interface;

[0043] Remote transmission: Remote communication modules (such as RS485, LoRa, 4G) encrypt data and transmit it to cloud servers or mobile terminals. They support Modbus protocol and API interface to enable remote monitoring and early warning.

[0044] Working principle of the preferred technical solution

[0045] Triangular pyramid antenna 1 structural optimization

[0046] Hollow cone design: reduces antenna weight and volume, while optimizing beam focusing characteristics and improving energy concentration through the angle of the metal plate (apex angle θ=30°-60°);

[0047] Silver plating on the inner wall: The silver layer (thickness ≥ 5 μm) reduces microwave transmission loss (reflectivity ≥ 95%) and enhances signal strength;

[0048] Bottom probe 3 feed source: Single-point electromagnetic wave excitation ensures phase center stability and avoids phase error introduced by multiple feed sources.

[0049] Control Box 2 Integrated Design

[0050] Modular layout: The radar module, processor, power module, etc. are integrated into the control box 2, and electromagnetic interference is isolated by a metal partition;

[0051] Power Management: Power modules (such as lithium batteries) are surge protected and voltage converted (5V / 3.3V) via a circuit manager to ensure stable power supply to the system;

[0052] Threaded design of connecting pipe 7: The top connecting pipe 7 (with threaded groove 8) supports flange installation, or the lifting rope with bolts can be connected to the threaded groove 8 of the connecting pipe 7, which is suitable for top and side mounting scenarios.

[0053] Anti-interference and environmental adaptation

[0054] Wide operating temperature range: Control box 2 is made of 316L stainless steel and filled with thermally conductive silicone, supporting a temperature difference of -40℃ to 120℃ and suppressing temperature drift of electronic components.

[0055] Multi-interface adaptation: Side power interface 6 (such as M12 aviation plug) and data interface 5 (such as RJ45) support explosion-proof cable connection to meet the needs of chemical explosion-proof scenarios.

[0056] Power Interface 6: Adapts to power modules, ensuring convenient and safe power access.

[0057] Data Interface 5: Adapted to the processor, supporting data exchange and expansion functions with external devices.

[0058] Detailed Workflow

[0059] Step 1: Initialization and Configuration

[0060] System startup: Power is turned on, the processor initializes the system, and checks whether the status of each module is normal.

[0061] Parameter settings: Input the necessary parameters via display screen 4 or the remote communication module.

[0062] Step 2: Signal Transmission and Reception

[0063] Signal generation: The radar module generates a high-frequency microwave signal and transmits it through the triangular pyramid antenna 1.

[0064] Signal reflection: After a microwave signal reaches the surface of a liquid, part of the signal is reflected back to the antenna.

[0065] Signal Acquisition: The triangular pyramid antenna 1 captures the echo signal and transmits it to the radar module.

[0066] Step 3: Data Processing and Calculation

[0067] Signal analysis: The radar module demodulates and analyzes the received echo signals to extract useful information.

[0068] Time difference measurement: The liquid level height is calculated based on the time difference between the transmitted signal and the received echo, combined with the propagation speed of microwaves in the medium.

[0069] Data correction: Adaptive filtering algorithms, which are mature technologies in the field of liquid level monitors, are applied to remove environmental noise interference and ensure measurement accuracy.

[0070] Step 4: Result Display and Transmission

[0071] Data output: The processor sends the calculated liquid level and other status parameters to display screen 4 for on-site viewing.

[0072] Remote transmission: Through the remote communication module, the monitoring data is transmitted to a remote server or mobile terminal in real time, so that users can view it anytime and anywhere.

[0073] Step 5: Maintenance and Updates

[0074] System monitoring: The processor continuously monitors the system's operating status, detects any abnormalities, and promptly issues an alarm.

[0075] Software upgrade: Download the latest firmware update via remote communication module to improve system performance and security.

[0076] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A triangular cone radar liquid level monitoring device, characterized in that, include: A triangular pyramidal antenna (1) is used to transmit and receive microwave signals; The radar module is electrically connected to the triangular pyramidal antenna (1) and is used to process the received echo signal and calculate the liquid level height. The processor, connected to the radar module, is responsible for controlling the operation of the entire system and data processing. The display screen (4) is electrically connected to the processor and is used to display the current liquid level information; A remote communication module, electrically connected to the processor, is used to transmit monitoring data to a remote server or mobile terminal.

2. The triangular cone radar liquid level monitoring device according to claim 1, characterized in that, The triangular pyramidal antenna (1) has a hollow structure, and the inner wall of the triangular pyramidal antenna (1) is plated with silver.

3. The triangular cone radar liquid level monitoring device according to claim 2, characterized in that, The bottom of the triangular pyramidal antenna (1) is provided with a probe (3).

4. The triangular cone radar liquid level monitoring device according to claim 3, characterized in that, The top of the triangular cone antenna (1) is equipped with a control box (2), the radar module, processor and remote communication module are installed inside the control box (2), and the display screen (4) is installed on the outer wall of the control box (2).

5. The triangular cone radar liquid level monitoring device according to claim 4, characterized in that, The control box (2) is equipped with a power module, which is electrically connected to the processor, radar module, remote communication module and display screen (4) through a circuit manager.

6. The triangular cone radar liquid level monitoring device according to claim 5, characterized in that, The top of the control box (2) is equipped with a connecting pipe (7), and the connecting pipe (7) is provided with a threaded groove (8).

7. The triangular cone radar liquid level monitoring device according to claim 6, characterized in that, The control box (2) has a power interface (6) and a data interface (5) on its side. The power interface (6) is adapted to the power module, and the data interface (5) is adapted to the processor.

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