CN212228169U - Radar level gauge of high frequency radar subassembly - Google Patents
Radar level gauge of high frequency radar subassembly Download PDFInfo
- Publication number
- CN212228169U CN212228169U CN201922398871.4U CN201922398871U CN212228169U CN 212228169 U CN212228169 U CN 212228169U CN 201922398871 U CN201922398871 U CN 201922398871U CN 212228169 U CN212228169 U CN 212228169U
- Authority
- CN
- China
- Prior art keywords
- antenna
- flange plate
- radar
- square
- transmitting antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Images
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses a radar liquid level meter of a high-frequency radar component, which comprises a guided wave radar module, a flange plate and an antenna, wherein the guided wave radar module is connected with the flange plate; the flange plate is arranged at the bottom of the guided wave radar module, and the antenna is arranged on the bottom surface of the flange plate; the antenna comprises a transmitting antenna and a plurality of receiving antennas which are respectively connected with the guided wave radar module, the transmitting antenna is arranged at the center of the flange plate, and the plurality of receiving antennas are arranged around the transmitting antenna; the receiving antenna is semicircular and is attached to the bottom surface of the flange plate; the transmitting antenna is arranged in the flange plate, and the transmitting end is provided with a horn-shaped waveguide tube penetrating out of the bottom surface of the flange plate. The antenna and the flange plate are integrally arranged, so that the volume of the antenna is reduced, and the measuring blind area of the conventional horn-shaped and bar-shaped antenna during deep test is avoided; based on the structure of the existing radar liquid level meter, the structure is simplified by rearranging the antennae, the radar liquid level meter is convenient to install, store and transport, the measurement precision is improved by the plurality of receiving antennae which are arranged in a square shape, and the radar liquid level meter has strong practicability and wide applicability.
Description
Technical Field
The invention relates to a liquid level meter, in particular to a radar liquid level meter of a high-frequency radar assembly, and belongs to the technical field of liquid level measurement.
Background
Radar level gauges are measuring instruments based on the time-travel principle, the radar waves running at the speed of light, the running time being converted into a fill-level signal by electronic components. The probe emits high-frequency pulses which are transmitted in space at the speed of light, and when the pulses meet the surface of the material, the pulses are reflected back to be received by a receiver in the instrument and convert distance signals into level signals.
The radar level gauge transmits very short microwave pulses of very low energy which are transmitted and received via the antenna system. The radar wave runs at the speed of light. The antenna receives the reflected microwave pulse and transmits the microwave pulse to the electronic circuit, and the microprocessor processes the signal and identifies the echo generated by the microwave pulse on the surface of the material. The operating time can be converted into a fill-level signal by the electronic component.
The distance D from the surface of the material is proportional to the time travel T of the pulse:
d = C × T/2, where C is the speed of light, and since the distance E of the empty tank is known, the level L is: l = E-D.
The radar liquid level gauge mainly comprises an electronic element and an antenna, has no movable part, has few faults in use, and has the problems that some volatile organic matters in a storage tank can be crystallized on a horn mouth or the antenna of the radar liquid level gauge in use, and certain inconvenience is caused to use because the horn mouth or the antenna has relatively large volume and length.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a radar liquid level gauge of a high-frequency radar assembly.
In order to achieve the above object, the present invention adopts the following technical solutions:
a radar liquid level gauge of a high-frequency radar assembly comprises a guided wave radar module, a flange plate and an antenna;
the flange plate is arranged at the bottom of the guided wave radar module, and the antenna is arranged on the bottom surface of the flange plate;
the antenna comprises a transmitting antenna and a plurality of receiving antennas which are respectively connected with the guided wave radar module, the transmitting antenna is arranged at the center of the flange plate, and the plurality of receiving antennas are arranged around the transmitting antenna;
the receiving antenna is semicircular and is attached to the bottom surface of the flange plate;
the transmitting antenna is arranged in the flange plate, and the transmitting end is provided with a horn-shaped waveguide tube penetrating out of the bottom surface of the flange plate.
The tail end of the waveguide extends out of the bottom surface of the flange.
The receiving antennas are distributed in a circular arrangement by taking the transmitting antenna as a circle center.
The receiving antennas are distributed into an inner circle and an outer circle by taking the transmitting antenna as a circle center.
Furthermore, the receiving antennas are distributed in a square shape and are respectively arranged at the end corners of the square shape, and the receiving antennas comprise an inner square, a middle square and an outer square, wherein the deflection angles of the inner square, the middle square and the outer square are 45 degrees in sequence;
the end angle of the inner square is arranged on the inner circle;
the end angles of the outer square are respectively arranged on the outer circle, and the side length is parallel to that of the inner square;
the end angle of the middle square is arranged on the outer circle, and the end angle of the inner square is arranged on the side length of the middle square.
The guided wave radar module comprises a microwave signal source and a signal converter;
the microwave signal generated by the microwave signal source is transmitted through a transmitting antenna; the receiving antenna feeds back the received microwave signal to the signal converter.
The invention has the advantages that:
according to the radar liquid level meter of the high-frequency radar component, the antenna and the flange plate are integrally arranged, so that the volume of the antenna is reduced, and a measuring blind area is avoided when the existing horn-shaped and bar-shaped antennas are deeply tested; based on the structure of the existing radar liquid level meter, the structure is simplified by rearranging the antennae, the radar liquid level meter is convenient to install, store and transport, the measurement precision is improved by the plurality of receiving antennae which are arranged in a square shape, and the radar liquid level meter has strong practicability and wide applicability.
Drawings
FIG. 1 is a schematic structural diagram of a top view of a radar level gauge of a high frequency radar assembly of the present invention.
FIG. 2 is a schematic structural diagram of a front view of a radar level gauge of a high frequency radar assembly of the present invention.
Fig. 3 is a schematic diagram of the principle of the present invention.
The designations in the drawings have the following meanings: 1-a guided wave radar module, 2-a flange plate, 3-a transmitting antenna, 4-a receiving antenna, 5-an inner circle, 6-an outer circle and 7-a guided wave tube.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
A radar liquid level meter of a high-frequency radar component comprises a guided wave radar module, a flange plate, a transmitting antenna and a plurality of receiving antennas.
The flange plate and the guided wave radar module are integrally arranged and arranged at the bottom of the guided wave radar module; the transmitting antenna and the receiving antennas are fixedly arranged with the flange plate, wherein the transmitting antenna is arranged at the center in the flange plate, a horn-shaped waveguide tube is arranged at the transmitting end along the transmitting direction, and the waveguide tube penetrates out of the bottom surface of the flange plate and extends out of one section; the receiving antenna is semicircular and is arranged around the transmitting antenna by being attached to the bottom surface of the flange plate:
as shown in fig. 1, the arrangement mode is 3 groups of squares, the receiving antennas are respectively arranged at the end corners of the squares, namely an inner square, a middle square and an outer square, and the deflection angles are 45 degrees in sequence; and the end angle of the inner square is arranged on the inner circle, the end angles of the middle square and the outer square are arranged on the outer circle, the radius of the inner circle is R, and the radius of the outer circle is √ 2R. Namely, the end angle of the inner square is arranged on the inner circle; the end angles of the outer square are respectively arranged on the outer circle, and the side length is parallel to the inner square; the end angle of the middle square is arranged on the outer circle, and the end angle of the inner square is arranged on the side length of the middle square.
The guided wave radar module comprises a microwave signal source and a signal converter; transmitting the microwave signal generated by the microwave signal source through a transmitting antenna; the receiving antenna feeds back the received microwave signal to the signal converter, and the microwave signal is processed by the processor and then output.
L1 is the emission wavelength, L2 is the returned acceptance wavelength, and D is the distance from the surface of the material;
r = d1+ d2= L1 × sin β + L2 × sin β = (L1 + L2) × sin β = CT × sin β (formula 1);
wherein R, CT is known, and sin β can be obtained;
further, according to D = L2 · cos β (formula 2),
meanwhile, D + D = L1 × cos β (formula 3), in combination with L1 + L2= CT;
d is the depth of the transmitting antenna from the ground of the flange, and D is obtained.
The data of a plurality of receiving antennas are averaged, and the liquid level distance D with high precision can be measured.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (6)
1. A radar liquid level gauge of a high-frequency radar component is characterized by comprising a guided wave radar module, a flange plate and an antenna;
the flange plate is arranged at the bottom of the guided wave radar module, and the antenna is arranged on the bottom surface of the flange plate;
the antenna comprises a transmitting antenna and a plurality of receiving antennas which are respectively connected with the guided wave radar module, the transmitting antenna is arranged at the center of the flange plate, and the plurality of receiving antennas are arranged around the transmitting antenna;
the receiving antenna is semicircular and is attached to the bottom surface of the flange plate;
the transmitting antenna is arranged in the flange plate, and the transmitting end is provided with a horn-shaped waveguide tube penetrating out of the bottom surface of the flange plate.
2. The radar level gauge for high frequency radar assemblies according to claim 1, wherein the end of said waveguide extends beyond the bottom surface of the flange.
3. The radar level gauge according to claim 1, wherein said plurality of receiving antennas are distributed in a circular arrangement with respect to the transmitting antenna.
4. The radar level gauge according to claim 1, wherein said plurality of receiving antennas are arranged in an inner circle and an outer circle around the transmitting antenna.
5. The radar level gauge of a high frequency radar assembly according to claim 4, wherein said receiving antennas are arranged in a square shape and are respectively disposed at the end corners of the square shape, comprising an inner square, a middle square and an outer square, the deflection angles of which are 45 degrees in sequence;
the end angle of the inner square is arranged on the inner circle;
the end angles of the outer square are respectively arranged on the outer circle, and the side length is parallel to that of the inner square;
the end angle of the middle square is arranged on the outer circle, and the end angle of the inner square is arranged on the side length of the middle square.
6. The radar level gauge for high frequency radar assemblies according to claim 1, wherein said guided wave radar module comprises a microwave signal source, a signal converter;
the microwave signal generated by the microwave signal source is transmitted through a transmitting antenna; the receiving antenna feeds back the received microwave signal to the signal converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922398871.4U CN212228169U (en) | 2019-12-27 | 2019-12-27 | Radar level gauge of high frequency radar subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922398871.4U CN212228169U (en) | 2019-12-27 | 2019-12-27 | Radar level gauge of high frequency radar subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212228169U true CN212228169U (en) | 2020-12-25 |
Family
ID=73901630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922398871.4U Expired - Fee Related CN212228169U (en) | 2019-12-27 | 2019-12-27 | Radar level gauge of high frequency radar subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212228169U (en) |
-
2019
- 2019-12-27 CN CN201922398871.4U patent/CN212228169U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102313586B (en) | There is radar level gauge system and the bottom reflector of bottom reflector | |
| EP2283382B1 (en) | High sensitivity frequency modulated radar level gauge system | |
| CN110988862B (en) | Ultra-close millimeter wave radar sensing method and system | |
| CN1192454C (en) | System consisting of a wave guide and an antenna | |
| EP2659237B1 (en) | High frequency mode generator for radar level gauge | |
| US7532155B2 (en) | Radar level gauging system | |
| EP2490040B1 (en) | Single conductor probe gwr system with reduced end of nozzle reflection | |
| US8933835B2 (en) | Two-channel directional antenna and a radar level gauge with such an antenna | |
| CN215865393U (en) | Multi-frequency radar level meter | |
| US10801873B2 (en) | System and method for determining level and density distribution | |
| CN110967692A (en) | Imaging method | |
| CN104457910B (en) | The position measuring system of dielectric boundaries | |
| CN206019788U (en) | A kind of microwave radar wave level measurement device | |
| CN112803152A (en) | Meteor radar detection antenna | |
| CN212228169U (en) | Radar level gauge of high frequency radar subassembly | |
| CN112985540A (en) | Split type guided wave radar level gauge based on gated frequency modulated continuous wave | |
| US10942057B2 (en) | Radar level gauge with H01-mode wave transducer | |
| US11860025B2 (en) | System for recognizing and/or determining the volume of bodies or substances made of dielectric and/or conductive material | |
| CN116736228A (en) | Antennas for radar installations | |
| KR102063136B1 (en) | Smart level meter with removed measurement dead band | |
| Henry et al. | 3D scanning radar for the remote reading of passive electromagnetic sensors | |
| RU2276334C1 (en) | Radiowave level meter | |
| KR102630318B1 (en) | Horn antenna assembly for microstrip array antenna | |
| RU54180U1 (en) | DEVICE FOR RADAR MEASUREMENT VIBRATION | |
| RU109570U1 (en) | HELICOPTER RADAR STATION |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |