CN203454993U - Multilayer cloud real-time distance measurement device - Google Patents
Multilayer cloud real-time distance measurement device Download PDFInfo
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- CN203454993U CN203454993U CN201320517550.1U CN201320517550U CN203454993U CN 203454993 U CN203454993 U CN 203454993U CN 201320517550 U CN201320517550 U CN 201320517550U CN 203454993 U CN203454993 U CN 203454993U
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- time distance
- laser diode
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Abstract
The utility model discloses a multilayer cloud real-time distance measurement device. The multilayer cloud real-time distance measurement device comprises a laser beam expanding and shaping system, a laser diode, a signal identification timer, a system control module, a photoelectric detector, a subsequent light path, a small hole diaphragm and a receiving telescope, wherein the laser beam expanding and shaping system is arranged in front of the laser diode; the laser diode is connected to the signal identification timer; the system control module is connected with the signal identification timer; the signal identification timer is also connected with the photoelectric detector; the photoelectric detector is connected with the subsequent light path; the small hole diaphragm and the receiving telescope are arranged in front of the subsequent light path in sequence; the laser beam expanding and shaping system is formed by the combination of a plurality of adjustable lenses; the laser diode is an infrared laser diode. According to the multilayer cloud real-time distance measurement device, an efficient optical transmitting and receiving system and a simple low-cost distance measurement identification circuit are adopted, and the multilayer cloud-base height can be measured. The multilayer cloud real-time distance measurement device can automatically work all the time in an unattended manner and is applicable to weather, environment protection and measurement of the cloud-base height and cloud layers of airports.
Description
Technical field
The utility model relates to a kind of multi layer cloud real time distance device.
Background technology
The instrument of measuring for the height of cloud base often uses the principles such as range measurement principle and Mie scattering laser radar remote sensing.
Use the instrument of range measurement principle to have lamps behind a curtain, laser ranging ceilometer etc., so the measuring accuracy of lamps behind a curtain is too low, substantially do not re-use now, laser ranging ceilometer adopts Emission Lasers pulse to cloud layer, and record launch time and the time of the light pulse signal that is reflected back by cloud base, by time reckoning distance, due to the structure of taking, the penetration capacity of the light source using in atmosphere is not strong, the receiving ability of probe unit is not high simultaneously, only has 1-2 km general daytime, and also only have 8 kms night, and the technology path of taking timing is only to remember once, so realize approach and all can only measure a single target for these two kinds, can only survey from the nearest one deck cloud base of surveying instrument high, if multi layer cloud can not be measured.
Mie scattering laser radar remote sensing is surveyed principle: measuring the cloud level is the backscatter signal of exploring laser light pulse differing heights in atmosphere, cloud is strong scattering signal, so just can access cloud base information by algorithm, structure and its detectivity of unit component parameter of due to laser radar, taking are strong, can obtain the atmospheric information of ten a few to tens of kms, so multi layer cloud information also obtains simultaneously.But this technology not only needs to guarantee that penetrating with detectivity of laser also needs stratification of atmosphere to measure; cause the unit component cost of taking high; simultaneously for the field performance of assurance instrument has been taked more safeguard measure; therefore overall cost is relatively high, and the formation that not only depends on hardware system in precision also depends on the precision of algorithm.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of multi layer cloud real time distance device.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of multi layer cloud real time distance device, comprises laser beam expanding orthopedic systems, laser diode, signal identification timer, system control module, photodetector, follow-up light path, smallcolumn diaphragm, receiving telescope; Laser beam expanding orthopedic systems is located at laser diode the place ahead, and laser diode is connected to signal identification timer; System control module is connected with signal identification timer, and signal identification timer is also connected with photodetector; Photodetector is connected with follow-up light path; Follow-up light path the place ahead is provided with smallcolumn diaphragm and receiving telescope successively.
As preferably, laser beam expanding orthopedic systems is combined by plural piece adjustable lens.
As preferably, laser diode is infra-red laser diode.
As preferably, receiving telescope is transmission-type combined lens or Zigzag type telescope.
As preferably, follow-up light path comprises optical lens, collimation lens, optical filter.
As preferably, system control module comprises the communication interface for being connected with host computer.
The principle that the utility model multi layer cloud real time distance device has adopted Mie scattering laser radar and common range finding to combine.Take specifically the Laser emission can in atmosphere with high-penetration and capacity gauge to receive structure, adopt the beam expander device of laser tube and optimization, make light possess strong penetration capacity, signal receives receiving system and the highly sensitive photodetector that adopts high receiving efficiency, makes system possess the ability of atmospheric sounding echoed signal.The identification of signal adopts the identification timer of the continuous timing of identification of High-Speed Automatic adjustment threshold value, possesses the function that simultaneously records a plurality of time points.When having cloud, the amplitude of photodetector output signal can increase suddenly, timer can be recorded from laser pulse and be emitted to the time that signal strengthens, and is multiplied by the light velocity can obtains the round distance of light from emitter to cloud by this time, and half of this distance is the height of cloud base.Differing heights cloud echo signal can be different in amplitude, and the action of therefore identifying timer also has and has level threshold threshold value automatic identification function, thereby identifies different amplitude target echo pulse signals, realizes the multilayer height of cloud base and measure.
Technique scheme comprises following two key points:
1) adopt efficient optical emitting receiving system and succinct low cost range finding identification circuit, can survey elevation information at the bottom of multi layer cloud.First be the ability that possesses atmospheric sounding gasoloid and atmospheric molecule, this makes system can survey the cloud of tens kilometers, is secondly the pulse feature of utilizing cloud echo signal, is directly inputted to signal identification timer, can accurately record cloud signal with the high time.
2) adopt the identification timer of optimal design, possessed automatic adjustment identification cloud signal threshold value and function during recording gauge repeatedly, realized the detection of multi layer cloud.
This device is realized the measurement of the multilayer height of cloud base, realizes automatic unattended all weather operations.Can be used for the height of cloud base of meteorology, environmental protection, airport and R&D institution and the measurement of cloud layer.
The beneficial effects of the utility model are:
Adopt efficient optical emitting receiving system and succinct low cost range finding identification circuit, realize the measurement of the multilayer height of cloud base, it can automatic unattended all weather operations, is applicable to the height of cloud base of meteorology, environmental protection, airport and R&D institution and the measurement of cloud layer.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model multi layer cloud real time distance device embodiment.
In figure, 1-laser beam expanding orthopedic systems, 2-infra-red laser diode, 3-signal identification timer, 4-system control module, 5-photodetector, the follow-up light path of 6-, 7-smallcolumn diaphragm, 8-receiving telescope.
Embodiment
Fig. 1 is multi layer cloud real time distance device, comprises laser beam expanding orthopedic systems 1, laser diode 2, signal identification timer 3, system control module 4, photodetector 5, follow-up light path 6, smallcolumn diaphragm 7, receiving telescope 8.
Laser beam expanding orthopedic systems 1 is located at infra-red laser diode 2 the place aheads, and infra-red laser diode 2 is connected to signal identification timer 3; System control module 4 is connected with signal identification timer 3, and signal identification timer is also connected with photodetector 5; Photodetector is connected with follow-up light path 6; Follow-up light path the place ahead is provided with smallcolumn diaphragm 7 and receiving telescope 8 successively.
The course of work:
System control module 4 is controlled after a laser pulse of infra-red laser diode 2 transmittings, laser beam expanding orthopedic systems 1 shaping through optimal design enters atmosphere, the backscatter signal of atmosphere is received by telescopic system 8, by smallcolumn diaphragm 7 and follow-up light path 6, arrive photodetector 5, by photodetector, light signal is converted to electric signal, entering signal identification timer 3 carries out identification and the timing of signal again, according to the data of the temporal information output height of cloud base.Infra-red laser diode 2 sends to synchronizing signal signal identification timer 3 as timing start information in output laser pulse, when meeting cloud layer, echoed signal can strengthen suddenly, with respect to pulse of cloudless signal formation, first identification timer needs this signal to identify, if effective impulse signal record, will adjust pulse signal recognition threshold and wait for the arrival of next pulse simultaneously.All recorded informations and the adjustment of pulse recognition threshold value complete by system control module 4.System control module is also born the control of laser pulse output and the regulatory function of total system temperature control, to adapt to field all weather operations, has communication interface to provide cloud layer information to host computer simultaneously.
Laser beam expanding orthopedic systems 1 is comprised of polylith adjustable lens, can adapt to the parameter of different laser tubes, makes the laser beam of final transmitting reach request for utilization, in the shortest distance, can fall in field of view of receiver, possesses again enough penetration capacitys simultaneously.
Receiving telescope 8 systems consist of transmission-type combined lens, also can consist of Zigzag type telescope.
Follow-up light path 6 comprises optical lens, collimation lens, and a series of optics adjustment such as optical filter and background filter.Play Background suppression, improve the signal to noise ratio (S/N ratio) effect of signal.
The present embodiment has adopted efficient optical emitting receiving system and succinct low cost range finding identification circuit, can survey elevation information at the bottom of multi layer cloud.First be the ability that possesses atmospheric sounding gasoloid and atmospheric molecule, this makes system can survey the cloud of tens kilometers, is secondly the pulse feature of utilizing cloud echo signal, is directly inputted to signal identification timer, can accurately record cloud signal with the high time.
The present embodiment has adopted the identification timer of optimal design, possesses automatic adjustment identification cloud signal threshold value and function during recording gauge repeatedly, realizes the detection of multi layer cloud.Above-described the utility model embodiment, does not form the restriction to the utility model protection domain.Any modification of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present utility model.
Claims (6)
1. a multi layer cloud real time distance device, is characterized in that: comprise laser beam expanding orthopedic systems, laser diode, signal identification timer, system control module, photodetector, follow-up light path, smallcolumn diaphragm, receiving telescope; Described laser beam expanding orthopedic systems is located at laser diode the place ahead, and described laser diode is connected to signal identification timer; Described system control module is connected with signal identification timer, and signal identification timer is also connected with photodetector; Described photodetector is connected with follow-up light path; Described follow-up light path the place ahead is provided with smallcolumn diaphragm and receiving telescope successively.
2. multi layer cloud real time distance device according to claim 1, is characterized in that: described laser beam expanding orthopedic systems is combined by plural piece adjustable lens.
3. multi layer cloud real time distance device according to claim 1, is characterized in that: described laser diode is infra-red laser diode.
4. multi layer cloud real time distance device according to claim 1, is characterized in that: described receiving telescope is transmission-type combined lens or Zigzag type telescope.
5. multi layer cloud real time distance device according to claim 1, is characterized in that: described follow-up light path comprises optical lens, collimation lens, optical filter.
6. multi layer cloud real time distance device according to claim 1, is characterized in that: described system control module comprises the communication interface for being connected with host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320517550.1U CN203454993U (en) | 2013-08-23 | 2013-08-23 | Multilayer cloud real-time distance measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320517550.1U CN203454993U (en) | 2013-08-23 | 2013-08-23 | Multilayer cloud real-time distance measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203454993U true CN203454993U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320517550.1U Expired - Lifetime CN203454993U (en) | 2013-08-23 | 2013-08-23 | Multilayer cloud real-time distance measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203454993U (en) |
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2013
- 2013-08-23 CN CN201320517550.1U patent/CN203454993U/en not_active Expired - Lifetime
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Granted publication date: 20140226 |
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| CX01 | Expiry of patent term |