A radar level gauge automatic detection mechanism

Abstract

The utility model discloses a kind of radar material level meter automatic detection mechanism, it is related to the technical field of calibration measurement, including darkroom and radar material level meter, the darkroom one end outer wall is connected with mounting plate, the darkroom is co-opened with the communicating hole for installing and placing radar material level meter with mounting plate, the movable reflector plate is provided in the darkroom, range finder is installed in the darkroom located radar material level meter one side outer wall, measuring hole is opened in the darkroom for range finder measurement use, the bottom of the darkroom is equipped with the seventh axle track, supporting frame is slidably connected on the seventh axle track. The utility model is set by PLC Test distance, can accurately position the position of reflector plate, reduce the positioning error caused by human factor, improve the precision of ranging detection, increase manual range finder, after reflector plate moves to specified position, manually click range finder calibration current reflector plate distance accuracy, further ensure the reliability of detection data.

Description

Technical Field

[0001] This utility model relates to the field of calibration and measurement technology, and in particular to an automatic detection mechanism for radar level gauges. Background Technology

[0002] As a widely used measurement device in the industrial field, radar level gauges are mainly used to accurately measure the height or level of materials in containers. Their measurement accuracy and stability are directly related to many key aspects such as the control accuracy of industrial production processes, product quality, and production safety. In order to ensure that radar level gauges can achieve the expected measurement results in practical applications, it is essential to conduct rigorous testing and calibration before leaving the factory.

[0003] For radar level gauge ranging detection, most methods still rely on manual and fixed-position ranging. This traditional method is relatively simple and direct in operation; the tester manually moves the radar level gauge to a specific fixed position, performs the ranging operation, and records the measurement data. While simple and direct, this method has the following problems: 1. Manual operation consumes a lot of time and manpower, resulting in low overall detection efficiency and failing to meet the needs of modern industrial production for speed and efficiency; 2. During manual ranging, the tester's operating skills, experience level, and working condition can significantly affect the measurement results; 3. In the ranging detection process, to simulate signal propagation conditions in the actual use environment, absorbing materials are usually placed around the test area to reduce signal reflection and interference. However, when manually moving the radar level gauge for fixed-position ranging, due to the limitation of operating space and the randomness of human operation, it is difficult to ensure that the absorbing material is completely sealed after each movement, inevitably leaving gaps. The additional reflected energy introduced by these gaps may cause changes in the radar received signal strength, thus affecting the distance resolution and ranging accuracy. Therefore, an automatic detection mechanism for radar level gauges is proposed. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose an automatic detection mechanism for radar level gauges.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic detection mechanism for a radar level gauge includes a dark chamber and a radar level gauge. An installation plate is connected to the outer wall of one end of the dark chamber. The dark chamber and the installation plate have a common through hole for mounting the radar level gauge. A movable reflector is installed inside the dark chamber. A rangefinder is installed on the outer wall of the dark chamber on one side of the radar level gauge. A measuring hole is provided on the dark chamber for the rangefinder to measure.

[0007] Preferably, a seventh-axis track is installed at the bottom of the darkroom, a support frame is slidably connected to the seventh-axis track, the reflector is installed on the support frame, and a driver is installed on the support frame to control the sliding of the support frame on the seventh-axis track.

[0008] Preferably, the six inner walls of the anechoic chamber are provided with a wave-absorbing layer, which is composed of a densely arranged plurality of cone-shaped or pyramidal wave-absorbing units.

[0009] Preferably, the absorbing layer is made of polyurethane material.

[0010] Preferably, the darkroom is equipped with a movable door.

[0011] Preferably, a control cabinet and a touch screen are installed on the outer wall of the darkroom.

[0012] Preferably, the darkroom is welded from galvanized square tubing and galvanized steel sheet, and has dimensions of 12m × 3m × 3m.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] 1. This utility model uses a PLC to set the test distance, which can accurately locate the position of the reflector, reduce positioning errors caused by human factors, improve the accuracy of distance measurement, and add a manual rangefinder. After the reflector is moved to the designated position, the manual click of the rangefinder can be used to calibrate the accuracy of the current distance to the reflector, further ensuring the reliability of the test data.

[0015] 2. The absorbing layer of this utility model covers the entire anechoic chamber without any dead spots. The absorbing layer is composed of multiple cone-shaped or pyramidal absorbing units arranged densely. From the tip of the cone to the bottom, its geometric characteristics gradually change, forming a specific impedance gradient characteristic. This allows electromagnetic waves to enter the interior of the absorbing material to the maximum extent, rather than being reflected on the surface, reducing signal reflection and interference. This provides a cleaner testing environment for radar level gauges, thereby improving the accuracy of factory testing. Attached Figure Description

[0016] Figure 1 This is a side sectional view of the present invention.

[0017] Figure 2 This is a top sectional view of the present invention.

[0018] Figure 3 This is a side view of the structure of this utility model.

[0019] In the diagram: 1 Darkroom, 2 Absorbing layer, 3 Movable door, 4 Control cabinet, 5 Touch screen, 6 Mounting plate, 7 Radar level gauge, 8 Rangefinder, 9 Seventh axis track, 10 Support frame, 11 Reflector. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-3 As shown, an automatic detection mechanism for a radar level gauge includes a dark chamber 1 and a radar level gauge 7. An installation plate 6 is connected to the outer wall of one end of the dark chamber 1. The dark chamber 1 and the installation plate 6 have a common through hole for mounting the radar level gauge 7. A movable reflector 11 is provided inside the dark chamber 1. A rangefinder 8 is installed on the outer wall of the dark chamber 1 on one side of the radar level gauge 7. A measuring hole is provided on the dark chamber 1 for the rangefinder 8 to measure.

[0022] In this embodiment, a seventh-axis track 9 is installed at the bottom of the darkroom 1, and a support frame 10 is slidably connected on the seventh-axis track 9. The reflector 11 is installed on the support frame 10, and a driver is installed on the support frame 10 to control the support frame 10 to slide on the seventh-axis track 9.

[0023] In this embodiment, the six inner walls of the darkroom 1 (the entire wall, ceiling and floor of the darkroom 1) are provided with a wave-absorbing layer 2. The wave-absorbing layer 2 is composed of multiple cone-shaped or pyramidal wave-absorbing units arranged densely. From the tip of the cone to the bottom of the cone, its geometric characteristics gradually change, forming a specific impedance gradient characteristic, so that electromagnetic waves can enter the interior of the wave-absorbing material to the maximum extent, rather than being reflected on the surface.

[0024] In this embodiment, the absorbing layer 2 is made of polyurethane material and contains carbon black powder, graphite powder and other materials.

[0025] In this embodiment, the darkroom 1 is equipped with a movable door 3, which facilitates manual operation, inspection and maintenance by personnel entering the darkroom 1.

[0026] In this embodiment, a control cabinet 4 and a touch screen 5 are installed on the outer wall of the darkroom 1. The control cabinet 4 contains a PLC controller, a switch, etc. for control and communication. The touch screen 5 is used to issue control commands to the control cabinet 4.

[0027] In this embodiment, the darkroom 1 is welded from galvanized square tubing and galvanized steel sheet, and its dimensions are 12m×3m×3m.

[0028] Working process and its principle:

[0029] When in use, first set the test distance of the radar level gauge 7 to such as 3m, 5m, 8m, 10m, etc., and set the detection in sequence. After the setting is completed on the touch screen 5, the PCL in the control cabinet 4 will send a command to the driver. The driver will drive the support frame 10 to move and move the reflector 11 to the designated position. The user manually clicks the rangefinder 8 to calibrate the accuracy of the current distance of the reflector 11. After the calibration is successful, the radar level gauge 7 is powered on and tested in sequence. After the test is completed, the touch screen 5 is set to return the reflector 11 to the origin, which is convenient for the next radar level gauge 7 to be used for detection.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic detection mechanism for radar level gauges, characterized in that, The device includes a darkroom (1) and a radar level gauge (7). One end of the darkroom (1) is connected to an installation plate (6). The darkroom (1) and the installation plate (6) have a common connecting hole for installing the radar level gauge (7). A movable reflector (11) is installed inside the darkroom (1). A rangefinder (8) is installed on the outer wall of the darkroom (1) on one side of the radar level gauge (7). A measuring hole is provided on the darkroom (1) for the rangefinder (8) to measure.

2. The automatic detection mechanism for radar level gauges according to claim 1, characterized in that, The bottom of the darkroom (1) is equipped with a seventh axis track (9), and a support frame (10) is slidably connected on the seventh axis track (9). The reflector (11) is mounted on the support frame (10), and a driver is installed on the support frame (10) to control the support frame (10) to slide on the seventh axis track (9).

3. The automatic detection mechanism for radar level gauges according to claim 1, characterized in that, The six inner walls of the darkroom (1) are provided with a wave-absorbing layer (2), which is composed of multiple cone-shaped or pyramid-shaped wave-absorbing units arranged in a dense manner.

4. The automatic detection mechanism for radar level gauges according to claim 3, characterized in that, The absorbing layer (2) is made of polyurethane material.

5. The automatic detection mechanism for radar level gauges according to claim 1, characterized in that, The darkroom (1) is equipped with a movable door (3).

6. The automatic detection mechanism for radar level gauges according to claim 1, characterized in that, The outer wall of the darkroom (1) is equipped with a control cabinet (4) and a touch screen (5).

7. The automatic detection mechanism for radar level gauges according to claim 1, characterized in that, The darkroom (1) is welded from galvanized square tubes and galvanized steel plates, and its dimensions are 12m×3m×3m.

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