CN210199315U - Sea fog detection device based on visibility laser radar - Google Patents
Sea fog detection device based on visibility laser radar Download PDFInfo
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- CN210199315U CN210199315U CN201920672387.3U CN201920672387U CN210199315U CN 210199315 U CN210199315 U CN 210199315U CN 201920672387 U CN201920672387 U CN 201920672387U CN 210199315 U CN210199315 U CN 210199315U
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Abstract
The utility model provides a sea fog detection device based on visibility laser radar, survey laser radar including sea fog, including optics transceiver module, laser source module, detection module, collection module, numerical control module, scanning module. The scanning rotating device (110) is connected to one side of the non-optical path of the laser (101) and the detector (103) to drive the laser (101), the beam expander (102), the detector (103) and the telescope (104) to integrally rotate, or the scanning rotating device (110) is arranged on one side of the optical path of the beam expander (102) and the telescope (104) to rotate the light beam after the light beam enters a scanning head of the scanning rotating device (110), so that accurate measurement of the visibility of uneven atmosphere can be realized.
Description
Technical Field
The utility model relates to a radar detection technology field, it is specific, relate to a sea fog detection device based on visibility laser radar.
Background
Sea fog is one of the most important disastrous weathers at sea and is also a large enemy of ship navigation safety. At present, the understanding of the sea fog distribution is mostly based on observation of a coastal observation station, a marine vessel and a buoy, but the data is rare, and the problems of representativeness and data quality exist, so that the comprehensive and clear understanding of the sea fog distribution is always lacked. The existing visibility measuring instrument is mainly of a transmission type and a forward scattering type, and the measurement is based on the premise that the surrounding meteorological environment of an installation place is uniform, so that under the condition of local rain, snow or fog, the reading is easy to have errors, and the accurate and timely feedback can not be made on the weather phenomenon which seriously affects the navigation safety of a ship.
With the development of remote sensing technology in recent years, radars and satellites are gradually applied to the field of sea fog monitoring, and a better solution can be provided for sea fog monitoring. However, the satellite measurement is affected by the track of the point under the satellite, the transit time and the high-altitude cloud layer, and the real-time tracking and early warning of the sea fog cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sea fog detection device based on visibility laser radar. Scanning formula visibility laser radar through the detection and analysis to the produced backward light scattering process of interaction between atmospheric particulates and the laser, can realize the accurate measurement to inhomogeneous atmospheric visibility, and measuring result does not receive the influence of weather conditions such as group fog, smoke and dust. Set up scanning formula visibility laser radar at key harbour and peripheral area, establish the three-dimensional comprehensive monitoring net of sea fog with bank-based utility model radar as the main part, can effectively obtain the high resolution, sea real-time visibility distribution state on a large scale is showing the effect for the promotion performance of shipping safety and harbour operating efficiency, channel utilization ratio.
In order to achieve the above object, the utility model provides a scanning formula visibility laser radar's sea fog detection device: including visibility lidar, this visibility lidar includes: the telescope comprises an optical transceiver module, a laser source module, a detection module, an acquisition module, a numerical control module and a scanning module, wherein a detector is arranged at the tail end of the telescope, and a beam expander is arranged at the light beam emitting end of the laser;
the switch power supply is respectively connected with a processor, a laser power supply, a detector and a gate control card, the gate control card is respectively connected with the laser and the single photon counting card, the processor is respectively connected with the gate control card and the single photon counting card, the laser power supply is connected with the laser, and the detector is respectively connected with the single photon counting card and the gate control card;
the scanning rotating device is connected to one side of the laser and the detector, which is not on the light path, so as to drive the laser, the beam expanding lens, the detector and the telescope to integrally rotate, or the scanning rotating device is arranged on one side of the light path of the beam expanding lens and the telescope, and the light beam is rotated after being injected into a scanning head of the scanning rotating device.
Preferably, the processor is an embedded computer.
Preferably, the laser is a solid state laser, or a semiconductor laser.
Preferably, the first forward scattering visibility meter is arranged at the visibility laser radar, is connected to the control center, and is used for supplementing a detection blind area with a few tens of meters of a visibility laser radar near field; and the second forward scattering visibility meter is arranged in the effective detection distance of the visibility laser radar, is connected to the control center and is used for regularly calibrating the radar measurement result.
Through implementing above technical scheme, have following technological effect: the utility model provides a scanning formula visibility laser radar through the detection and analysis to produced backward light scattering process of interact between atmospheric particulates and the laser, can realize the accurate measurement to inhomogeneous atmospheric visibility, and measuring result does not receive the influence of weather conditions such as group's fog, smoke and dust. The method can effectively obtain the section-by-section information of visibility distribution in the whole detection path, accurately forecast the atmospheric environment characteristics such as cloud, fog, smoke dust and the like within a certain distance range from an installation place, and can also obtain the information such as visibility, fog, aerosol distribution and the like in each direction in real time by changing the scanning direction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a scanning visibility laser radar according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another scanning visibility lidar according to an embodiment of the present invention;
fig. 3 is an application schematic diagram of a scanning visibility laser radar provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a scanning visibility laser radar combined with a scattering visibility meter according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a scanning visibility laser radar. The device comprises a laser 101 power supply, a single photon counting card 106, a gate control card 107, a processor 108, a switching power supply 109, a scanning rotating device 110, a laser 101 and a detector 103, wherein the detector 103 is arranged at the tail end of a telescope 104, and a beam expanding lens 102 is arranged at the beam emitting end of the laser 101;
the switching power supply 109 is respectively connected with the processor 108, the laser power supply 105, the detector 103 and the gate control card 107, the gate control card 107 is respectively connected with the laser 101 and the single photon counting card 106, the processor 108 is respectively connected with the gate control card 107 and the single photon counting card 106, the laser power supply 105 is connected with the laser 101, and the detector 103 is respectively connected with the single photon counting card 106 and the gate control card 107; the scanning rotation device 110 is connected to one side of the non-optical path of the laser 101 and the detector 103 to drive the laser 101, the beam expander 102, the detector 103 and the telescope 104 to integrally rotate.
As shown in fig. 2. The embodiment of the utility model provides another kind of scanning formula visibility laser radar. The device comprises a laser 101 power supply, a single photon counting card 106, a gate control card 107, a processor 108, a switching power supply 109, a scanning rotating device 110, a laser 101 and a detector 103, wherein the detector 103 is arranged at the tail end of a telescope 104, and a beam expanding lens 102 is arranged at the beam emitting end of the laser 101; the switch power supply 109 is respectively connected with a laser power supply 105 and a gate control card 107, the gate control card 107 is respectively connected with the laser 101 and the single photon counting card 106, the processor 108 is respectively connected with the gate control card 107 and the single photon counting card 106, the laser power supply 105 is connected with the laser 101, the detector 103 is respectively connected with the single photon counting card 106 and the gate control card 107, and the scanning rotating device 110 is arranged on one side of the light path of the beam expanding mirror 102 and the telescope 104 and rotates laser beams after the beams enter a scanning head of the scanning rotating device. In this embodiment, the scanning and rotating device 110 does not carry the laser 101, the beam expander 102, the detector 103, and the telescope 104 to rotate integrally, but performs rotational scanning on the outgoing laser beam expanded by the beam expander 102 from the laser 101 and the light beam before the atmosphere is backscattered and enters the telescope 104.
The embodiment of the utility model provides a scanning formula visibility laser radar working process:
the switching power supply 109 controls the switching of the laser power supply 105, the laser power supply 105 provides power for the laser 101, the laser 101 emits laser beams, the laser beams pass through the beam expanding lens 102 for expanding beams and then emit to the atmosphere, echo signals of the laser beams scattered by the atmosphere are received by the telescope 104 and are introduced into the detector 103, and data signals of the detector 103 are connected to the single photon counting card 106. Gating card 107 provides trigger signals to laser 101, detector 103 and single photon counting card 106, and the data from single photon counting card 106 is transmitted to processor 108. Processor 108 controls the embodiment of the present invention provides a scanning visibility laser radar 305, which emits laser beams, detects signals, processes data and inverts visibility, and processes signals, forms results and displays data.
The embodiment of the utility model provides a scanning formula visibility laser radar adopts full solidification and modular structure, can regularly gather and acquire visibility distribution data under unmanned on duty's environment to the automatic storage record. And selecting a proper place according to actual environmental conditions, and scanning and monitoring in the direction needing to be monitored.
As shown in fig. 3, in addition, the embodiment of the utility model provides a scanning type visibility laser radar 305 sends the data of gathering to communication base station 302 and central control room 303 through GSM communication module 304, and communication base station 302 sends the cell-phone end again, in order to obtain cell-phone warning 301's information, and this scanning type visibility laser radar 305 can send terminal computer or terminal display in order to show the data of gathering through wireless communication network 306. The collected signals can also be sent to a terminal computer or a terminal display in a wired manner to display the collected data. The scanning visibility laser radar 305 is installed at a wide position of a field of view, and a scanning angle range can be set by itself. The power supply of the equipment can be connected to the existing power grid (220V, 50Hz alternating current), and can also be realized through solar energy, wind energy or wind-solar complementation. The embedded wireless communication module is configured in the scanning visibility laser radar 305 control box as an optional component, transmits data to a terminal information platform through a GPRS/CDMA wireless technology, can collect data acquired by remote monitoring equipment in real time, and can perform remote monitoring, debugging and management on the equipment. By adopting GPRS/CDMA wireless communication, the method has the advantages of wide network coverage, reliable transmission, flexible networking, quick construction period and the like. The software system analyzes the measurement data by combining with the GIS, and can provide real-time and accurate early warning of the cluster fog in the scanning area.
As shown in fig. 4, a schematic diagram of a scanning visibility lidar incorporating a scatterometer is provided.
Scattering visibility instruments are the dominant instruments for meteorological visibility observation at present. It directly measures the scattered light intensity from a small sample volume. The extinction coefficient is effectively calculated by forward scattering light intensity at two ends of a transmitter and a receiver which form a certain angle and a certain distance. The measurements assume that the atmosphere is uniformly distributed. Due to the small sampling volume, the measurement of visibility within a certain range may have a point-to-point problem.
In this embodiment, a forward scattering visibility meter 402A is provided at the installation site of the visibility laser radar 401, and is used to supplement a detection blind area 407 of a visibility laser radar near field of several tens of meters. A forward scattering visibility meter 402B is arranged in an effective detection distance 406 of the visibility laser radar 401 and is used for regularly calibrating 404 radar measurement results. The forward scattering visibility meter 402AB and the visibility laser radar 401 are connected to the control center 403, the measurement result is displayed in real time, and a full-range visibility distribution map 405 is given according to a GIS map. For the sea fog detection system, visibility laser radar, forward scattering radar and millimeter wave radar are combined for use and are mutually supplemented to obtain sea fog distribution in a larger range
In the above embodiment, preferably, the processor of the scanning visibility lidar is an embedded computer or other data signal processing device. The laser may be a fixed laser, a semiconductor laser, or other forms of laser.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The utility model provides a sea fog detection device based on visibility lidar which characterized in that, includes visibility lidar, and this visibility lidar includes: an optical transceiver module, a laser source module, a detection module, an acquisition module, a numerical control module and a scanning module,
wherein the tail end of the telescope (104) is provided with a detector (103), and the beam emitting end of the laser (101) is provided with a beam expander (102);
the switching power supply (109) is respectively connected with the processor (108), the laser power supply (105), the detector (103) and the gate control card (107), the gate control card (107) is respectively connected with the laser (101) and the single photon counting card (106), the processor (108) is respectively connected with the gate control card (107) and the single photon counting card (106), the laser power supply (105) is connected with the laser (101), and the detector (103) is respectively connected with the single photon counting card (106) and the gate control card (107);
the scanning rotating device (110) is connected to one side of the non-optical path of the laser (101) and the detector (103) to drive the laser (101), the beam expander (102), the detector (103) and the telescope (104) to integrally rotate, or the scanning rotating device (110) is arranged on one side of the optical path of the beam expander (102) and the telescope (104) to rotate the light beam after the light beam enters a scanning head of the scanning rotating device (110).
2. The visibility lidar based sea fog detection device of claim 1, wherein the processor is an embedded computer.
3. The visibility lidar based sea fog detection device of claim 1, wherein the laser is a solid state laser or a semiconductor laser.
4. The visibility lidar based sea fog detection device of claim 1,
the first forward scattering visibility meter (402A) is arranged at the visibility laser radar, is connected to the control center (403), and is used for supplementing a detection blind area with dozens of meters of a visibility laser radar near field;
and a second forward scattering visibility meter (402B) arranged in the effective detection distance of the visibility laser radar is connected to the control center (403) and used for periodically calibrating the radar measurement result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920672387.3U CN210199315U (en) | 2019-05-09 | 2019-05-09 | Sea fog detection device based on visibility laser radar |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920672387.3U CN210199315U (en) | 2019-05-09 | 2019-05-09 | Sea fog detection device based on visibility laser radar |
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| CN210199315U true CN210199315U (en) | 2020-03-27 |
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| CN201920672387.3U Active CN210199315U (en) | 2019-05-09 | 2019-05-09 | Sea fog detection device based on visibility laser radar |
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