CN208314186U - A kind of laser radar atmospheric visibility measuring device - Google Patents
A kind of laser radar atmospheric visibility measuring device Download PDFInfo
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- CN208314186U CN208314186U CN201820803638.2U CN201820803638U CN208314186U CN 208314186 U CN208314186 U CN 208314186U CN 201820803638 U CN201820803638 U CN 201820803638U CN 208314186 U CN208314186 U CN 208314186U
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- laser
- telescope
- optical circulator
- photon
- measuring device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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Abstract
The utility model discloses a kind of laser radar atmospheric visibility measuring devices, including laser, optical circulator, telescope, single-photon detector, photon counter, gate gating circuit, single board computer and three-dimensional scanning unit, laser, optical circulator, telescope is sequentially connected, optical circulator also with single-photon detector, photon counter, single board computer and gating gating circuit are sequentially connected, gate gating circuit output end respectively with laser, the connection of the control terminal of photodetector and photon counter, above-mentioned electronic component is encapsulated in a shell, shell is arranged in three-dimensional scanning unit；The utility model effectively increases the measurement accuracy and stability of the atmospheric visibility under adverse circumstances, reduce the volume of measuring device, so that it is can be effectively applied to the occasion for needing to measure oblique journey or vertical direction visibility, is particularly suitable for takeoff and landing, parachute jumping such as is dropped a bomb at the occasions.
Description
Technical field
The utility model relates to meteorological optical range technical field of measuring equipment more particularly to a kind of laser radar atmosphere to see
Spend measuring device.
Background technique
Existing business meteorological optical range measuring device mainly includes transmission-type visibility meter and forward scattering visibility
Two class of instrument, the light emitting end of transmission-type visibility meter and receiving end are split at two, need several hundred meters of parallax range therebetween, can not
It is applied to the occasions such as boat-carrying, airborne；The sending and receiving end of forward scattering type visibility meter is separated by usually at one meter or so, so can only survey
The meteorological optical range for measuring local, only can just be generalized to wide area under the equally distributed hypothesis of atmosphere.In addition, these two types of visibility
Instrument is typically only capable to the meteorological optical range in measurement horizontal direction, is unable to measure the landing of aircraft or the applications institutes such as parachute jumping of dropping a bomb
The visibility in oblique journey or vertical direction needed.
Utility model content
To solve the above-mentioned problems, the utility model proposes a kind of laser radar atmospheric visibility measuring devices.
Specifically, a kind of laser radar atmospheric visibility measuring device, including laser transmitting-receiving unit, photon detection and acquisition
Unit, system control and data processing unit and three-dimensional scanning unit, the laser transmitting-receiving unit include that laser, optics go in ring
Device and telescope, the photon detection and acquisition unit include single-photon detector and photon counter, and system controls and data
Processing unit includes gating gating circuit and single board computer, the first end company of the output end of the laser and the optical circulator
It connects, the second end of the optical circulator is connect with the telescope, and the optical circulator is arranged in the laser and institute
It states in the optical path between telescope, the third end of the optical circulator is connect with the input terminal of the single-photon detector, institute
The output end for stating single-photon detector is connect with the input terminal of the photon counter, the output end of the photon counter and institute
The input terminal connection of single board computer is stated, the output end of the single board computer is connect with the input terminal of the gating gating circuit, the choosing
The output end of logical gating circuit is connect with the control terminal of the laser, photodetector and photon counter respectively, described to swash
Light device, optical circulator, telescope, single-photon detector, photon counter, single board computer and gating gate circuit package are at one
In shell, the shell is arranged in the three-dimensional scanning unit.
Further, the three-dimensional scanning unit includes platform and transmission mechanism, and the shell passes through the transmission mechanism
It is fixedly connected with the platform, the transmission mechanism includes the first driving motor, and first driving motor is described for controlling
The pitch angle of transmission mechanism, the platform include the second driving motor, and second driving motor is for controlling the platform
Level angle, first driving motor and second driving motor pass through the first driving circuit and the second driving electricity respectively
Road is connect with the single board computer.
Further, the laser is impulse semiconductor laser.
Further, the telescope is projection-type telescope.
Further, the optical circulator is fiber optical circulator, the laser and telescope pass through respectively optical fiber with
The fiber optical circulator connection.
Further, the gating gating circuit is multichannel programmable circuit.
The utility model has the beneficial effects that: overcoming existing transmission-type visibility meter, forward scattering type visibility
The equipment operating distance such as instrument is small, is influenced the disadvantages of big by atmosphere is heteropical, effectively increases the atmosphere energy under adverse circumstances
The measurement accuracy and stability of degree of opinion, reduce the volume of measuring device, can be effectively applied to it and need to measure oblique journey or hang down
Histogram is particularly suitable for takeoff and landing, the occasions such as parachute jumping is dropped a bomb to the occasion of visibility.
Detailed description of the invention
Fig. 1 is a kind of laser radar atmospheric visibility measuring device structural schematic diagram of the utility model.
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, now compareing Detailed description of the invention
Specific embodiment of the present utility model.
As shown in Figure 1, a kind of laser radar atmospheric visibility measuring device, including laser transmitting-receiving unit, photon detection and
Acquisition unit, system control and data processing unit and three-dimensional scanning unit, laser transmitting-receiving unit include that laser, optics go in ring
Device and telescope, photon detection and acquisition unit include single-photon detector and photon counter, and system controls and data processing
Unit includes gating gating circuit and single board computer, and the output end of laser and the first end of optical circulator connect, and optics goes in ring
The second end of device is connect with telescope, and optical circulator is arranged in the optical path between laser and telescope, optical circulator
Third end and the input terminal of single-photon detector connect, the input terminal of the output end of single-photon detector and photon counter connects
It connects, the output end of photon counter and the input terminal of single board computer connect, the input of the output end and gating gating circuit of single board computer
End connection, the output end for gating gating circuit are connect with the control terminal of laser, photodetector and photon counter respectively, are swashed
Light device, optical circulator, telescope, single-photon detector, photon counter, single board computer and gating gate circuit package are at one
In shell, shell is arranged in three-dimensional scanning unit.
Further, laser is impulse semiconductor laser.
Further, telescope is projection-type telescope.
Further, optical circulator is fiber optical circulator, and laser and telescope pass through optical fiber and optical fiber ring respectively
Device connection.
Further, gating gating circuit is multichannel programmable circuit, specifically can be FPGA.
1 port of the laser pulse through optical fiber guiding fiber circulator that impulse semiconductor laser issues, and pass through optical fiber
From the focus of 2 ports guiding transmission-type telescope, in the atmosphere by the specific direction of normal sheaf after telescope；Dissipating in atmosphere
Radion generates scattering effect to laser incident thereon, and rear orientation light therein is received via telescope and guiding fiber
The port 2 of circulator, and exported from the port of fiber optical circulator 3, single-photon detector, which is imported, through optical fiber carries out photoelectric conversion, after
After entering photodetector to scattering light, the photocathode of photomultiplier tube receives the irradiation of light radiation, in photomultiplier transit light
A series of electric pulse is formd in load, these pulses are added on the loader of discriminator after amplifier amplifies, and pass through Zhen
Other device filters out partial noise pulse, only the pulse directly proportional with optical radiation power is allowed to pass through, photon counter can be effectively reduced
Background count rate, the single photon pulses and thermoelectron that improves the signal-to-noise ratio of testing result, and can only form emission of cathode
Pulses switch is that counting is participated in calibration pulse, and other noise pulses are subtracted out, and can distinguish the signal that intensity has minute differences,
Measurement accuracy is very high, and anti-drift is fine, and time stability is good, and the electric signal of generation is counted by photon counter, and with
The form of digital signal is sent to single board computer, and the CPU of single board computer obtains the atmosphere in specific direction according to the data received and returns
Wave profile, to further calculate out the meteorological optical range in the direction.
Further, three-dimensional scanning unit includes platform and transmission mechanism, and shell connects by the way that transmission mechanism and platform are fixed
It connects, transmission mechanism includes the first driving motor, and the first driving motor is used to control the pitch angle of transmission mechanism, and platform includes the
Two driving motors, the second driving motor are used for the level angle of control platform, the first driving motor and the second driving motor difference
It is connect by the first driving circuit and the second driving circuit with single board computer, single board computer receives the instruction of host computer, and passes through control
First, second driving circuit adjusts the direction of laser, realizes the measurement to the atmospheric visibility on any be directed toward.
It should be noted that for simple description, therefore, it is stated as a systems for each embodiment of the method above-mentioned
The combination of actions of column, but those skilled in the art should understand that, the application is not limited by the described action sequence, because
For according to the application, certain some step be can be performed in other orders or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, related movement and unit not necessarily this Shen
It please be necessary.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment
Part, reference can be made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, ROM, RAM etc..
Above disclosures are merely preferred embodiments of the utility model, the utility model cannot be limited with this certainly
Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.
Claims (6)
1. a kind of laser radar atmospheric visibility measuring device, which is characterized in that including laser transmitting-receiving unit, photon detection and adopt
Collect unit, system control and data processing unit and three-dimensional scanning unit, the laser transmitting-receiving unit include laser, optics ring
Row device and telescope, the photon detection and acquisition unit include single-photon detector and photon counter, and system controls sum number
It include gating gating circuit and single board computer, the first end of the output end of the laser and the optical circulator according to processing unit
Connection, the second end of the optical circulator connect with the telescope, the optical circulator be arranged in the laser and
In optical path between the telescope, the third end of the optical circulator is connect with the input terminal of the single-photon detector,
The output end of the single-photon detector is connect with the input terminal of the photon counter, the output end of the photon counter with
The input terminal of the single board computer connects, and the output end of the single board computer is connect with the input terminal of the gating gating circuit, described
The output end of gating gating circuit is connect with the control terminal of the laser, photodetector and photon counter respectively, described
Laser, optical circulator, telescope, single-photon detector, photon counter, single board computer and gating gate circuit package are one
In a shell, the shell is arranged in the three-dimensional scanning unit.
2. a kind of laser radar atmospheric visibility measuring device according to claim 1, which is characterized in that the three-dimensional is swept
Retouching unit includes platform and transmission mechanism, and the shell is fixedly connected by the transmission mechanism with the platform, the transmission
Mechanism includes the first driving motor, and first driving motor is used to control the pitch angle of the transmission mechanism, the platform
Including the second driving motor, second driving motor is used to control the level angle of the platform, first driving motor
And second driving motor passes through the first driving circuit respectively and the second driving circuit is connect with the single board computer.
3. a kind of laser radar atmospheric visibility measuring device according to claim 1, which is characterized in that the laser
For impulse semiconductor laser.
4. a kind of laser radar atmospheric visibility measuring device according to claim 1, which is characterized in that the telescope
For projection-type telescope.
5. a kind of laser radar atmospheric visibility measuring device according to claim 1, which is characterized in that the optics ring
Row device is fiber optical circulator, and the laser and telescope pass through optical fiber respectively and connect with the fiber optical circulator.
6. a kind of laser radar atmospheric visibility measuring device according to claim 1, which is characterized in that the storbing gate
Control circuit is multichannel programmable circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820803638.2U CN208314186U (en) | 2018-05-28 | 2018-05-28 | A kind of laser radar atmospheric visibility measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820803638.2U CN208314186U (en) | 2018-05-28 | 2018-05-28 | A kind of laser radar atmospheric visibility measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN208314186U true CN208314186U (en) | 2019-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820803638.2U Expired - Fee Related CN208314186U (en) | 2018-05-28 | 2018-05-28 | A kind of laser radar atmospheric visibility measuring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627812A (en) * | 2018-05-28 | 2018-10-09 | 成都信息工程大学 | A kind of laser radar atmospheric visibility measurement method and device |
| CN109827906A (en) * | 2019-01-31 | 2019-05-31 | 西安理工大学 | A kind of inversion method of laser radar slant visibility |
| CN114488196A (en) * | 2021-12-09 | 2022-05-13 | 山东国耀量子雷达科技有限公司 | Highway distributed visibility remote sensing system |
-
2018
- 2018-05-28 CN CN201820803638.2U patent/CN208314186U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627812A (en) * | 2018-05-28 | 2018-10-09 | 成都信息工程大学 | A kind of laser radar atmospheric visibility measurement method and device |
| CN109827906A (en) * | 2019-01-31 | 2019-05-31 | 西安理工大学 | A kind of inversion method of laser radar slant visibility |
| CN109827906B (en) * | 2019-01-31 | 2021-05-25 | 西安理工大学 | Inversion method of laser radar slope visibility |
| CN114488196A (en) * | 2021-12-09 | 2022-05-13 | 山东国耀量子雷达科技有限公司 | Highway distributed visibility remote sensing system |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190101 Termination date: 20200528 |