Radar level meter system with blowing dust removal function
By integrating a blowing module and a wireless data transmission radio into the radar level gauge system, the problem of lens adhesion in powder material environments was solved, achieving stable and accurate measurement and remote monitoring.
Patent Information
- Application Number
- CN202511195969.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-26
- Publication Date
- 2025-11-11
AI Technical Summary
In powdery environments, the lens of a radar level gauge is easily covered by powder, which affects measurement accuracy and poses a safety hazard.
Design a radar level gauge system with a blowing dust removal function. Combine a radar level gauge and a blowing module to achieve remote monitoring and data recording through a wireless data transmission radio. Use a high-gain LoRa antenna to ensure communication stability and use a DC brushless motor to blow away the powder on the lens.
It enables accurate measurement of radar level gauges in powder material environments, reduces safety hazards, and ensures the stability of remote monitoring and data recording.
Smart Images
Figure CN120927096A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of radar level gauges, and particularly to a radar level gauge system with a blowing dust removal function. Background Technology
[0002] Radar level gauges are widely used in industrial production for height detection of materials in closed or open containers. Radar level gauges are usually installed on the top of the container and transmit electromagnetic signals through an antenna. The electromagnetic signals are reflected off the material surface and received by the radar system. By comparing the transmitted and received signals, the distance between the radar level gauge and the material surface can be determined. More specifically, the distance between the target and the radar is usually calculated based on the time it takes for the electromagnetic signal to be emitted from the radar, reflected by the target, and received by the radar, as well as the propagation speed of the electromagnetic signal.
[0003] In some applications, when powdery materials or materials that easily generate large amounts of powder are stored in containers, the lens on the radar will gradually become covered with powder, which will block the radar level gauge's transmission signal. This will affect the accuracy of material detection, making it impossible for users to identify the true detection data of the level gauge in a timely manner, thus causing safety hazards. Summary of the Invention
[0004] To address the aforementioned technical problems in the existing technology, this application aims to provide a monitoring and control system with a blowing dust removal function and the ability to remotely monitor and record radar measurement and control data. A radar level gauge is installed on the blowing module, which is then mounted on top of the container for material level reading. The radar level gauge data is transmitted via a wireless data transmission radio. The user interface in the control room allows for remote monitoring of the material level or viewing of recorded data log documents. The specific technical solution is as follows: A radar level gauge system with a blowing dust removal function includes multiple test nodes to simultaneously test the material height inside multiple containers. Each test node includes a radar level gauge, a blowing module, and a wireless data transmission radio. The radar level gauge is connected to the wireless data transmission radio via an RS485 bus. The control room PC is connected to another wireless data transmission radio via a USB to RS485 serial cable. The blowing module is used to blow dust off the radar lens surface of the radar level gauge.
[0005] The radar level gauge includes a radar housing. The bottom of the radar housing has threads and a mounting ring that matches the threads. The purpose of this is to achieve a sealing effect and prevent dust from entering the radar.
[0006] The blowing module includes a top mounting section, a supporting copper column, a blowing section, and a bottom mounting section. The top mounting section is used to fix the entire part to the top of the container in the environment where the equipment is used; the supporting copper column connects the top mounting section and the bottom mounting section and provides support; the blowing section is used to blow away powder adhering to the lens of the radar level gauge; and the bottom mounting section is used to fix the radar level gauge.
[0007] Wireless data transmission radios are used for wireless data transmission. Each radar level gauge and the PC in the control room need one for wireless communication. The wireless data transmission radios use high-gain LoRa antennas for transmission and reception to ensure the stability of long-distance wireless communication.
[0008] The user interface includes a real-time material height display section, a material height line graph section, and a data log document section. The real-time material height display section is used to display the current material height in the container in real time. The material height line graph section draws and displays a line graph of the material height read within one minute. The data log document section saves all the read material heights along with the read time to a specified path on the PC.
[0009] This invention secures the bottom mounting portions of the radar level gauge and the air blowing module together by tightening the mounting ring, thus fixing the radar level gauge and the air blowing module as a single unit. The top mounting portion has pre-drilled wiring holes for easy wiring of the radar level gauge and the air blowing module. The number of supporting copper pillars can be increased or decreased according to the actual installation environment to adjust the installation depth of the radar level gauge, enhancing the adaptability of the equipment. When the DC brushless motor is working, the air supply ducts in the bottom mounting portion continuously blow air onto the lens surface of the radar level gauge. Attached Figure Description
[0010] Figure 1 This is a system block diagram of the radar level gauge system with air blowing and dust removal function of the present invention; Figure 2 This is a front structural schematic diagram of the radar level gauge with blowing dust removal function of the present invention; Figure 3 This is a diagram of the air duct of the air blowing module of the radar level gauge of the present invention; The attached diagram is labeled as follows: 1-Radar housing, 2-Mounting ring, 3-Radar lens, 4-Top mounting module, 5-Supporting copper pillar, 6-Bottom mounting module, 7-Cable routing hole, 8-DC brushless motor, 9-Air distribution module, 10-Long air supply hose, 11-Air supply duct, 12-Short air supply hose. Detailed Implementation
[0011] The technical solutions of the present invention will now be described with reference to the accompanying drawings in the embodiments of the present invention.
[0012] like Figure 1As shown, the radar level gauge system with blowing dust removal function of the present invention includes multiple test nodes, which can simultaneously test the material height inside multiple containers. Each test node includes a radar level gauge, a blowing module, and a wireless data transmission radio. The radar level gauge and the blowing module are assembled together. The radar level gauge is connected to the wireless data transmission radio via an RS485 bus. The control room PC is connected to another wireless data transmission radio via a USB to RS485 serial cable. The wireless data transmission radio uses a high-gain LoRa antenna for transmission and reception to ensure the transmission stability of long-distance wireless communication.
[0013] When the system is working, the blowing module is controlled by the MCU to run intermittently. The radar level gauge of each test node will collect the data and transmit it wirelessly to the PC via a wireless data transmission radio. The wireless data transmission radios of different test nodes have different addresses. The host computer on the PC displays the material height and material height line graph of different test nodes according to the received data, and saves the received data as a data log document according to the address.
[0014] like Figure 2 As shown, the radar level gauge includes a radar housing 1, a radar lens 3 and other radar level gauge components are fixed in the radar housing 1, the radar lens 3 passes through the bottom mounting module 6, and the radar lens 3 and the mounting ring 2 are threaded. The entire radar level gauge is fixed to the bottom mounting module 6 by tightening the mounting ring 2.
[0015] The bottom mounting module 6 is connected to the top mounting module 4 via three supporting copper pillars 5. The supporting copper pillars 5 are threaded inside and are fixed to the top mounting module 4 and the bottom mounting module 6 by screws. The wiring hole 7 in the middle of the top mounting module 4 is used to pass the signal line and power line of the radar level gauge and the power line of the DC brushless motor 8.
[0016] The DC brushless motor 8 is located in the middle of the three supporting copper columns 5. It is sealed to the air distribution module 9 through the short air supply hose 12. The air distribution module 9 is connected to two long air supply hoses 10 to divide the air force into two streams. The two long air supply hoses 10 are then connected to two air supply channels 11 on the bottom mounting module 6 to blow air onto the lens.
[0017] like Figure 3 As shown, the air generated by the DC brushless motor 8 flows from the long air supply hose 10 to the air supply channel 11. The air supply channel in the bottom mounting module 6 is a slanted cylindrical shape to supply air to the lens.
[0018] The user interface includes a real-time material height display section, a material height line graph section, and a data log document section. The real-time material height display section is used to display the current material height in the container in real time. The material height line graph section draws and displays a line graph of the material height read within one minute. The data log document section saves all the read material heights along with the read time to a specified path on the PC.
Claims
1. A radar level gauge system with a blowing dust removal function, comprising multiple test nodes, simultaneously testing the material height inside multiple containers, characterized in that: Each test node includes a radar level gauge, a blower module, and a wireless data transmission radio. The radar level gauge is connected to the wireless data transmission radio via an RS485 bus. The control room PC is connected to another wireless data transmission radio via a USB to RS485 serial cable. The blower module is used to blow dust off the surface of the radar lens (3) of the radar level gauge.
2. The radar level gauge system with blowing dust removal function as described in claim 1, characterized in that: The radar level gauge includes a radar housing (1), a radar lens (3) fixed in the radar housing (1), the radar lens (3) passing through the bottom mounting module (6), and the radar lens (3) and the mounting ring (2) are threaded. The radar level gauge is fixed on the bottom mounting module (6) by tightening the mounting ring (2).
3. The radar level gauge system with blowing dust removal function as described in claim 2, characterized in that: The bottom mounting module (6) is connected to the top mounting module (4) via a supporting copper column (5). The supporting copper column (5) is threaded inside and is fixed to the top mounting module (4) and the bottom mounting module (6) by screws.
4. The radar level gauge system with blowing dust removal function as described in claim 3, characterized in that: The top mounting module (4) has a wiring hole (7) in the center for passing the signal line and power line of the radar level gauge and the power line of the DC brushless motor (8).
5. The radar level gauge system with blowing dust removal function as described in claim 4, characterized in that: The DC brushless motor (8) is located in the middle of the supporting copper column (5) and is sealed to the air distribution module (9) through a short air supply hose (12). The air distribution module (9) is connected to two long air supply hoses (10), and the two long air supply hoses (10) are connected to two air supply channels (11) on the bottom mounting module (6).
6. The radar level gauge system with blowing dust removal function as described in claim 5, characterized in that: The air supply duct (11) is oblique cylindrical.