Phased array scanning radar level instrument

Abstract

The utility model relates to a phased array scanning radar level instrument, which relates to the technical field of radar level instruments, and comprises a main body, a distance measuring assembly and a driving motor, the distance measuring assembly is rotatably connected with the main body, and the distance measuring assembly is used for scanning and measuring a plurality of point positions on a target line; the driving motor is connected with the main body, an output shaft of the driving motor is in transmission connection with the distance measuring assembly, the driving motor is used for driving the distance measuring assembly to rotate, position information of a plurality of point positions on a target line can be rapidly measured through the distance measuring assembly, and the distance measuring assembly is driven by the driving motor to rotate; according to the invention, the position information of a plurality of point positions on a plurality of target lines can be obtained, and the three-dimensional information of the target object can be rapidly and accurately obtained in combination with the position information of each point on all target lines.

Description

TECHNICAL FIELD

[0001] The utility model relates to radar level gauge technical field, concretely relates to a phased array scanning radar level gauge. BACKGROUND

[0002] The level measurement usually refers to the technology for monitoring the height (position) or volume / quality of liquid, solid particles or slurry and other substances in a container or storage tank in real time, and is widely used in chemical industry, petroleum, electric power, food, environmental protection and other industries. The core goal is to accurately obtain the storage amount of material in the container, interface stratification or dynamic change data.

[0003] The level measurement in the prior art usually adopts a multi-radar probe combination measurement or a gimbal driving single probe scanning mode. Among them, the multi-radar probe combination measurement is to synchronously collect data from different angles by fixedly arranging multiple radar probes (such as laser radar, ToF sensor), and to generate a three-dimensional model by merging point clouds; this measurement mode is limited by the number of probes and the field of view angle, and it is difficult to accurately restore the details of complex curved surfaces. The gimbal driving single probe scanning is to adopt a rotating gimbal to drive a single radar probe to scan multiple angles frame by frame, and to generate complete three-dimensional data by motion stitching; this measurement mode needs to collect and stitch data frame by frame, and has poor dynamic scene adaptability, and the scanning period of the gimbal is relatively long.

[0004] To solve the above problems, the utility model provides a phased array scanning radar level gauge which has a short scanning period and can accurately restore the three-dimensional information of the target object. UTILITY MODEL CONTENT

[0005] To solve the above problems, the utility model provides a phased array scanning radar level gauge which has a short scanning period and can accurately restore the three-dimensional information of the target object.

[0006] To achieve the above purpose, the utility model provides the following scheme: comprising:

[0007] A main body comprising a mounting portion for connecting with a to-be-installed position;

[0008] A ranging assembly in rotational connection with the main body, the ranging assembly being used for scanning and measuring multiple points on a target line;

[0009] A drive motor connected with the main body, an output shaft of the drive motor being in transmission connection with the ranging assembly, the drive motor being used for driving the ranging assembly to rotate.

[0010] Preferably, the ranging assembly is a phased array unit, the phased array unit comprising a transmitting antenna, a receiving antenna and a data processor, the data processor being connected with the transmitting antenna and the receiving antenna respectively, the transmitting antenna being used for transmitting wave signals to a target line of a target object, and the receiving antenna being used for receiving echo signals reflected by the target object to obtain position information of multiple points on a target line.

[0011] Preferably, the control unit is further provided, and the transmitting antenna, the receiving antenna and the driving motor are electrically connected with the control unit, and the control unit is capable of controlling the start and stop of the transmitting antenna, the receiving antenna and the driving motor.

[0012] Preferably, the main body comprises a shell and a flange, the ranging assembly and the driving motor are installed in the shell, and the flange is sealingly installed at an opening of the shell.

[0013] Preferably, the hollow fixing shaft is further provided, the fixing shaft is fixedly installed on the flange, the fixing shaft extends towards the ranging assembly, a rotating shaft is rotatably arranged in the fixing shaft, one end of the rotating shaft is connected with a mounting frame of the ranging assembly, the driving motor is installed on the mounting frame, and an output shaft of the driving motor is in transmission connection with the fixing shaft.

[0014] Preferably, the first synchronous wheel is installed on the output shaft of the driving motor, the second synchronous wheel is installed on the outer side wall of the fixing shaft, and the first synchronous wheel and the second synchronous wheel are in transmission connection through a synchronous belt.

[0015] Preferably, the inductive switch is installed below the flange, the trigger is installed on the mounting frame, and the trigger is correspondingly arranged with the inductive switch.

[0016] Preferably, the slip ring and a wiring board for connecting with an external power supply are further provided, the wiring board is installed on the flange, a stator side of the slip ring is connected with the flange, an electric brush of the slip ring is electrically connected with the wiring board, a rotor side of the slip ring is connected with the mounting frame, and the ranging assembly and the driving motor are electrically connected with a conductive ring of the slip ring.

[0017] Preferably, the aviation socket is further provided, the aviation socket is electrically connected with the wiring board, and the aviation socket is used for connecting with the external power supply.

[0018] Preferably, the Bluetooth antenna is further provided, the Bluetooth antenna is in signal connection with the ranging assembly, and the Bluetooth antenna is used for connecting with an external signal receiving device.

[0019] The utility model discloses relative to prior art has obtained following technical effect:

[0020] The utility model discloses a phased array scanning radar material level appearance, through ranging assembly can fast survey the position information of multiple point positions on a target line, through driving motor can drive ranging assembly rotation, ranging assembly can obtain the position information of multiple point positions on multiple target lines in the process of rotation along its rotation center, combines the position information of each point on all target lines, can fast, accurate obtain the three -dimensional information of target object. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the utility model or prior art, the following will briefly introduce the drawing needed in the embodiment, obviously, the drawing in the following description only is some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0022] Figure 1 It is a schematic view of the embodiment of the utility model;

[0023] Figure 2 It is a sectional view schematic view of the embodiment of the utility model;

[0024] Figure 3 It is a schematic view of the application scene of the utility model;

[0025] Figure 4 It is the schematic view of the antenna array of transmitting antenna and receiving antenna.

[0026] Wherein, 1, transmitting antenna;2, receiving antenna;3, driving motor;4, control unit;5, shell;6, flange;7, upper cover;8, fixed shaft;9, rotation shaft;10, mounting bracket;11, first synchronous wheel;12, second synchronous wheel;13, inductive switch;14, trigger piece;15, slip ring;16, wiring board;17, indicating lamp;18, aviation socket;19, bearing;20, bluetooth antenna;21, mounting plate. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled person in the art without making creative labor belong to the protection scope of the utility model.

[0028] The utility model aims at providing a kind of phased array scanning radar material level appearance, under the driving of driving motor, through ranging assembly can fast obtain the position information of multiple point positions on multiple target lines, and then can fast, accurate obtain the three -dimensional information of target object.

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and understandable, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0030] With reference to Figures 1-4 The phased array scanning radar level gauge disclosed in the embodiments of the present application comprises a main body, a distance measuring assembly and a driving motor 3. The main body comprises a mounting portion for being connected to a mounting position. The distance measuring assembly is rotationally connected to the main body and is used for scanning and measuring a plurality of point positions on a target line. The driving motor 3 is connected to the main body, and the output shaft of the driving motor 3 is drivingly connected to the distance measuring assembly. The driving motor 3 is used for driving the distance measuring assembly to rotate. The main body is mounted to a preset mounting position through the mounting portion. At this time, the distance measuring assembly faces the object to be measured. The distance measuring assembly can measure a plurality of point positions on a target line in the target surface, and further obtain the position information of the plurality of point positions. The driving motor 3 can drive the distance measuring assembly to rotate. In the process of rotating along the rotation center, the distance measuring assembly can scan and measure a plurality of point positions on a target line corresponding to a new angle each time the distance measuring assembly rotates to the new angle. Further, the position information of the plurality of point positions on a plurality of target lines can be obtained. In combination with the position information of each point position on all target lines, the contour shape of the target object can be obtained, and further the three-dimensional information of the target object can be obtained.

[0031] As a preferred embodiment, the distance measuring assembly is a phased array unit. The phased array unit comprises a transmitting antenna 1, a receiving antenna 2 and a data processor. The data processor is connected to the transmitting antenna 1 and the receiving antenna 2 respectively. The transmitting antenna 1 is used for transmitting a wave signal to a target line of a target object. The receiving antenna 2 is used for receiving a reflected echo signal of the target object. The data processor can calculate the distance between a target point position and the phased array unit according to the time difference between the transmitting of the wave signal by the receiving antenna 2 and the receiving of the echo signal by the receiving antenna 2. Further, the position information of a plurality of points on a target line can be obtained in cooperation with the transmitting antenna 1 and the receiving antenna 2. Those skilled in the art can understand that the transmitting antenna 1 of the phased array unit is provided with an antenna array. By changing the phase difference of the antenna array on the transmitting antenna 1, the direction of the wave signal transmitted by the transmitting antenna 1 can be quickly changed. Further, the wave signal can be quickly transmitted to a target line of a target object. The antenna array on the receiving antenna 2 can receive the reflected echo signal of the target object. According to the time-displacement formula and the wave speed, the distance between the target point position and the phased array unit can be obtained, and further the position information of a plurality of point positions on a target line can be quickly obtained.

[0032] As a preferred implementation, the ranging assembly is a range finder, and the range finder is connected to the main body through a swing mechanism, and the swing mechanism can drive the range finder to reciprocate within a certain angle, and then the position information of multiple points on a target line can be obtained. Preferably, the swing mechanism can be a crank rocker mechanism, a steering engine, a swing cylinder and other existing structures, which will not be described here.

[0033] As a preferred implementation, the phased array scanning radar level gauge further comprises a control unit 4, and the transmitting antenna 1, the receiving antenna 2 and the driving motor 3 are electrically connected to the control unit 4, and the control unit 4 can control the start-stop state of the transmitting antenna 1, the receiving antenna 2 and the driving motor 3. During measurement, the transmitting antenna 1 and the receiving antenna 2 work synchronously to measure multiple points on a target line, and when the position information of each point on the target line is confirmed, the transmitting antenna 1 and the receiving antenna 2 stop working, the driving motor 3 starts working, and after driving the phased array unit to rotate by a certain angle, it stops working, at this time the transmitting antenna 1 and the receiving antenna 2 start working again to measure the position of each point on another target line, and so on, so as to obtain the three-dimensional information of the target object. For the start-stop state of the transmitting antenna 1, the receiving antenna 2 and the driving motor 3, the control unit 4 can realize it through a controller capable of changing the circuit on-off state at a fixed time, such as a timing relay, a PLC controller, a cycle timer and the like. This is prior art and will not be described here.

[0034] As a preferred implementation, the main body comprises a shell 5 and a flange 6, and the ranging assembly and the driving motor 3 are installed in the shell 5, and the flange 6 is sealingly installed at the opening of the shell 5, thereby achieving the effect of dustproof and waterproof.

[0035] Preferably, the main body further comprises an upper cover 7, and the upper cover 7 is installed above the flange 6, thereby forming a containing space between the upper cover 7 and the flange 6 to accommodate other components required for normal operation of the phased array scanning radar level gauge.

[0036] As a preferred embodiment, the phased array scanning radar level gauge further comprises a hollow fixing shaft 8 fixedly installed on the flange 6, the fixing shaft 8 extends towards the ranging assembly, and a rotating shaft 9 is rotatably arranged in the fixing shaft 8, the outer wall of the rotating shaft 9 is matched with the inner wall of the fixing shaft 8, the ranging assembly further comprises a mounting bracket 10, and the driving motor 3 is installed on the mounting bracket 10, one end of the rotating shaft 9 is connected with the mounting bracket 10 of the ranging assembly, and the output shaft of the driving motor 3 is in transmission connection with the fixing shaft 8. The driving motor 3 is spaced from the rotating shaft 9, when the driving motor 3 works, since the fixing shaft 8 is fixedly connected with the flange 6, the fixing shaft 8 will not rotate, the driving motor 3 rotates around the outer peripheral wall of the fixing shaft 8, the driving motor 3 is installed on the mounting bracket 10, the mounting bracket 10 is rotatably connected with the fixing shaft 8 through the rotating shaft 9, under the driving of the motor, the mounting bracket 10 can rotate around the rotating shaft 9 as the rotation center, and thus the rotation of the ranging assembly is realized.

[0037] Preferably, the data processor is installed on the mounting bracket.

[0038] It can be understood that the driving motor 3 is directly fixedly installed on the shell 5 or the flange 6, and the mounting bracket 10 is installed on the output shaft of the motor, and the rotation of the ranging assembly can also be realized.

[0039] As a preferred embodiment, the axis of the output shaft of the driving motor 3 is spaced from the axis of the fixing shaft 8.

[0040] Preferably, a first synchronous wheel 11 is installed on the output shaft of the driving motor 3, a second synchronous wheel 12 is installed on the outer side wall of the fixing shaft 8, and the first synchronous wheel 11 and the second synchronous wheel 12 are in transmission connection through a synchronous belt. The synchronous wheel assembly has the advantages of precise synchronous transmission, high efficiency, small vibration and long service life, and ensures the stable connection of the output shaft of the driving motor 3 and the fixing shaft 8. Of course, the driving motor 3 can also realize the transmission connection with the fixing shaft 8 through a gear assembly, a belt transmission, a chain and sprocket assembly and the like.

[0041] Preferably, the diameter of the first synchronous wheel 11 is smaller than the diameter of the second synchronous wheel 12, which reduces the load of the driving motor 3 on the one hand and can accurately control the rotation angle of the phased array unit on the other hand.

[0042] As a preferred embodiment, an induction switch 13 is installed below the flange 6, a triggering piece 14 is installed on the mounting bracket 10, and the triggering piece 14 is correspondingly arranged with the induction switch 13. The triggering piece 14 rotates with the mounting bracket 10 of the ranging assembly, and the triggering piece 14 triggers the induction switch 13 once every time the mounting bracket 10 rotates one circle. The position of the induction switch 13 is set as zero, and the signal when the induction switch 13 is triggered is taken as the zero return signal, and thus the zero return processing of the ranging assembly is realized.

[0043] Preferably, the phased array scanning radar level gauge further comprises an indicator light 17, a control circuit is built in the indicator light 17, the control circuit can control the stroboscopic speed of the indicator light 17, the control circuit is connected with the transmitting antenna 1, the receiving antenna 2, the driving motor 3 and the control unit 4 respectively, when the working state of the transmitting antenna 1, the receiving antenna 2, the driving motor 3 and other components connected with the control unit 4 is abnormal, the control circuit controls the stroboscopic speed of the indicator light 17 to accelerate to prompt the staff that the level gauge is abnormal.

[0044] As a preferred embodiment, the phased array scanning radar level gauge further comprises a slip ring 15 and a terminal block 16 for connecting with an external power supply, the terminal block 16 is installed on the flange 6, the flange 6 is provided with a through hole for the slip ring 15 to pass through, the through hole on the flange 6 is communicated with the through hole in the fixed shaft 8, the stator side of the slip ring 15 is connected with the flange 6, the brush of the slip ring 15 is electrically connected with the terminal block 16, the rotor side of the slip ring 15 passes through the fixed shaft 8 and is connected with the mounting bracket 10, the ranging assembly and the driving motor 3 are connected with the conductive ring of the slip ring 15 through wires. Through the above-mentioned mode, the ranging assembly is powered at the same time, and it is ensured that the ranging assembly can work in rotation.

[0045] Preferably, the data processor and the control unit 4 are also electrically connected with the conductive ring.

[0046] Further, the slip ring 15 is installed on the flange 6 through a mounting plate 21, specifically, the mounting plate 21 is bolted with the flange 6, the mounting plate 21 is provided with a through hole for installing the slip ring 15 in the middle, the stator side of the slip ring 15 is fixedly connected with the mounting plate 21, and the detachable installation of the slip ring 15 is realized.

[0047] As a preferred embodiment, the phased array scanning radar level gauge further comprises an aviation socket 18, the aviation socket 18 is electrically connected with the terminal block 16, and the aviation socket 18 is used for connecting with an external power supply. The aviation socket 18 has the advantages of reliable connection, strong dustproof and waterproof protection, long service life and the like, and ensures the normal use of the phased array scanning radar level gauge.

[0048] As a preferred embodiment, the phased array scanning radar level gauge further comprises a Bluetooth antenna 20, the Bluetooth antenna 20 is signal connected with the ranging assembly, and the Bluetooth antenna 20 is used for connecting with an external signal receiving device, so as to transmit the information measured by the ranging assembly to an external terminal.

[0049] Preferably, the control unit 4 is signal connected with the Bluetooth antenna 20, so as to send a control signal to the Bluetooth antenna 20 through the external terminal, to control each structure in the phased array scanning radar level gauge.

[0050] As a preferred implementation, the phased array scanning radar level gauge further comprises a bearing 19, the fixed shaft 8 is installed on the lower side of the flange 6, the rotating shaft 9 extends upwards to the upper side of the fixed shaft 8 away from the one end of the mounting frame 10, the outer wall of the rotating shaft 9 is connected with the inner ring of the bearing 19, the outer ring of the bearing 19 is connected with the flange 6, the bearing 19 has the advantages of strong stability and small friction, and it is ensured that the rotating shaft 9 can stably rotate.

[0051] The adaptive changes according to actual demands are within the protection scope of the utility model.

[0052] It should be noted that, for those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A phased array scanning radar level gauge, characterized in that, The utility model relates to a kind of distance measuring device, including: Main body, the main body includes installation part for being connected with the position to be installed; Distance measuring component, the distance measuring component is rotatably connected with the main body, the distance measuring component is used to carry out the scanning measurement of multiple point positions on a target line; Driving motor (3), the driving motor (3) is connected with the main body, the output shaft of the driving motor (3) is drivingly connected with the distance measuring component, and the driving motor (3) is used to drive the distance measuring component rotation.

2. The phased array scanning radar level gauge according to claim 1, characterized in that, The distance measuring component is phased array unit, the phased array unit includes transmitting antenna (1), receiving antenna (2) and data processor, the data processor is connected with the transmitting antenna (1) and the receiving antenna (2) respectively, the transmitting antenna (1) is used to emit wave signal to target object a target line, and the receiving antenna (2) is used to receive echo signal reflected by target object, to obtain the position information of multiple points on a target line.

3. The phased array scanning radar level gauge according to claim 2, characterized in that, It further includes control unit (4), the transmitting antenna (1), the receiving antenna (2) and the driving motor (3) are electrically connected with the control unit (4), and the control unit (4) can control the start-stop of the transmitting antenna (1), the receiving antenna (2) and the driving motor (3).

4. The phased array scanning radar level gauge according to claim 1, characterized in that, The main body includes shell (5) and flange (6), the distance measuring component and the driving motor (3) are installed in the shell (5), and the flange (6) is sealingly installed at the opening of the shell (5).

5. The phased array scanning radar level gauge according to claim 4, characterized in that, It further includes hollow fixed shaft (8), the fixed shaft (8) is fixedly installed on the flange (6), the fixed shaft (8) extends to the distance measuring component direction, and the rotating shaft (9) is rotatably arranged in the fixed shaft (8), one end of the rotating shaft (9) is connected with the mounting bracket (10) of the distance measuring component, the driving motor (3) is installed on the mounting bracket (10), and the output shaft of the driving motor (3) is drivingly connected with the fixed shaft (8).

6. The phased array scanning radar level gauge according to claim 5, characterized in that, The output shaft of the driving motor (3) is provided with first synchronous wheel (11), the outer side wall of the fixed shaft (8) is provided with second synchronous wheel (12), and the first synchronous wheel (11) and the second synchronous wheel (12) are drivingly connected by synchronous belt.

7. The phased array scanning radar level gauge according to claim 5, characterized in that, The inductive switch (13) is installed below the flange (6), the trigger (14) is installed on the mounting bracket (10), and the trigger (14) is correspondingly arranged with the inductive switch (13).

8. The phased array scanning radar level gauge according to claim 5, characterized in that, It further includes slip ring (15) and wiring board (16) for being connected with external power supply, the wiring board (16) is installed on the flange (6), the stator side of the slip ring (15) is connected with the flange (6), the brush of the slip ring (15) is electrically connected with the wiring board (16), the rotor side of the slip ring (15) is connected with the mounting bracket (10), and the distance measuring component and the driving motor (3) are electrically connected with the conductive ring of the slip ring (15).

9. The phased array scanning radar level gauge according to claim 8, characterized in that, It further includes aviation socket (18), the aviation socket (18) is electrically connected with the wiring board (16), and the aviation socket (18) is used to be connected with external power supply.

10. The phased array scanning radar level gauge according to claim 1, characterized in that, A Bluetooth antenna (20) is also included, which is connected with the ranging component signal, and is used to connect with external signal receiving devices.

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