CN114322964A - Observation and aiming system and method with laser communication function - Google Patents
Observation and aiming system and method with laser communication function Download PDFInfo
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Abstract
A navigation route of a viewing terminal is obtained through low-mode three-dimensional modeling of a surveying object, analysis of wireless network signal strength and real-time surveying data of the viewing terminal, so that the viewing terminal can carry out interaction of surveying data at regular time when the wireless network signal exists, and the laser signal is used for finishing the interaction of the surveying data at fixed points when the wireless network signal does not exist, so that the requirement of surveying work on data timeliness is met.
Description
Technical Field
The invention relates to the technical field of observing and aiming equipment, in particular to an observing and aiming system and method with laser communication.
Background
In the terrain surveying, surveying is generally carried out through a night vision device/telescope, if terrain surveying results in different directions are required to be obtained, a surveyor needs to go to different positions to carry out surveying, or after a plurality of surveyors respectively carry out surveying at different angles, the surveying results are collected to obtain a comprehensive surveying result, and different terrain view angle images of each position cannot be displayed in eyes of a decision maker quickly.
Therefore, the problems of the prior art are to be further improved and developed.
Disclosure of Invention
The object of the invention is: in order to solve the problems in the prior art, an object of the present invention is to provide a viewing and aiming system and method with a laser communication function, which enable a viewing and aiming terminal to implement data interaction through a laser signal when a geographic condition of a terrain survey is complex and a wireless signal is received and unstable, and the information interaction requirement is met.
The technical scheme is as follows: in order to solve the technical problem, the observation and aiming system with laser communication is used for the way-finding navigation of surveying the terrain by a plurality of observation and aiming terminals and comprises a server end, wherein the server end comprises a geographical three-dimensional modeling unit, a network signal detection unit and a way-finding unit;
the geographic three-dimensional modeling unit is used for acquiring three-dimensional low-modulus data of the surveyed object and performing first three-dimensional modeling on the surveyed object to obtain a first three-dimensional model;
the network signal detection unit acquires network signals of corresponding positions according to position data of a surveying object, and performs area division on the network signals according to wireless network signal strength to acquire a timing interaction area with strong wireless network signals, a random interaction area with unstable wireless network signals and a fixed point interaction area without wireless network signals; the fixed point interaction area is an area where the fixed point of the observation and aiming terminal carries out information interaction through a laser signal;
the path searching unit gives a navigation route according to the first three-dimensional modeling data and survey data fed back by the observing and aiming terminal in real time, the navigation route comprises a laser information interaction position of the observing and aiming terminal in a fixed point interaction area, and the interaction position is a determined longitude and latitude position and aiming direction indication data of the observing and aiming terminal;
and the observing and aiming terminal carries out topographic survey according to the navigation route and completes survey data interaction with each other at fixed points through laser signals when no wireless network signal exists.
The observing and aiming system with the laser communication function is characterized in that the network signal detection unit sets a wireless network signal intensity area larger than a first threshold value as a timing interaction area of the observing and aiming terminal; setting a wireless network signal intensity area between a first threshold and a second threshold as a random interaction area of the observing and aiming terminal; and setting the wireless network signal intensity area smaller than the second threshold value as a fixed point interaction area of the observing terminal.
The observation and aiming system with the laser communication function is characterized in that the server side updates the low-modulus data of the first three-dimensional modeling data in real time according to the survey data acquired by the observation and aiming terminal in real time to obtain the high-modulus data of a survey object.
The observing and aiming system with the laser communication function is characterized in that an observing and aiming communication area meeting survey data interaction is searched in a random interaction area and/or a fixed point interaction area and is called as an observing and aiming communication point; the route searching unit determines a navigation route of an observing and aiming terminal for completing information interaction through a laser signal according to the first three-dimensional modeling data, a network intensity grid graph and observing and aiming communication points, so that the observing and aiming terminal is communicated and interpenetrated among a timing interaction area, a random interaction area and a fixed point interaction area to advance the observing and aiming system with the laser communication, wherein the three-dimensional surface of the first three-dimensional modeling data is divided into a plurality of blocks, and the plurality of observing and aiming terminals carry out data survey on different modules of the same block; partitioning the fixed point interaction region by blocks; the block with the fixed point interaction area simultaneously comprises a timing interaction area and a random interaction area; and the route searching unit sets a surveying sequence among the blocks of the three-dimensional surface so as to realize the route searching navigation communication among the blocks.
The observing and aiming system with the laser communication function is characterized in that the observing and aiming terminal comprises an observation unit, a laser information transmitting unit and a laser information receiving unit; the observation unit is used for finishing conventional imaging observation, the laser information transmitting unit loads, modulates and transmits audio-video information on a laser wave band, and the laser information receiving unit restores the received laser information into the audio-video information;
the observation unit comprises an optical observation module, an imaging acquisition module and a display control module, wherein an imaging detector of the optical observation module is connected with the imaging acquisition module, the imaging acquisition module is connected with the display control module, and the display control module is connected with a display screen;
the laser information transmitting unit comprises the laser modulation and transmitting module, and the laser modulation and transmitting module is respectively connected with the imaging acquisition module, the voice input module and the audio-video storage module;
the laser information receiving unit comprises a laser receiving and modulating module and a voice output module, and the laser receiving and modulating module is respectively connected with the voice output module and the display control module.
The observing unit further comprises a voice input module and an audio-video storage module, the voice input module is used for collecting voice information, the voice input module and the imaging collection module are respectively connected with the audio-video storage module, and the audio-video storage module stores the audio-video information collected by the imaging collection module and the voice input module.
The utility model provides a sight system that possesses laser communication, wherein, optics observation module includes objective, first beam splitter, formation of image detector, display screen and eyepiece, the objective, first beam splitter the formation of image detector the display screen, the eyepiece arranges in proper order along the light propagation direction.
The observation system with the laser communication function comprises an optical observation module, a first light splitting module, a second light splitting module and a control module, wherein the optical observation module further comprises a second light splitting sheet which is arranged in the vertical direction of the first light splitting sheet; the second light splitting sheet is provided with a laser modulation and emission module in the vertical direction far away from the first light splitting sheet; and a laser receiving and demodulating module is arranged in the light refraction direction of the second light splitting sheet.
A viewing method with laser communication is used for a plurality of viewing terminals to carry out route finding navigation on topographic survey, and specifically comprises the following steps:
acquiring three-dimensional low-modulus data of a survey terrain, and carrying out first three-dimensional modeling on a survey object to obtain a first three-dimensional model;
acquiring wireless network signals of corresponding positions according to the position data of the surveying object, and carrying out region division on the wireless network signals to obtain a timing interaction region with strong wireless network signals, a random interaction region with unstable wireless network signals and a fixed point interaction region without wireless network signals; the fixed point interaction area is an area where the fixed point of the observation and aiming terminal carries out information interaction through a laser signal;
step three, a navigation route is given according to the first three-dimensional modeling data and survey data fed back by the observing and aiming terminal in real time, the navigation route comprises a laser information interaction position of the observing and aiming terminal in a fixed point interaction area, and the interaction position is a determined longitude and latitude position and aiming direction indication data of the observing and aiming terminal;
and fourthly, surveying the terrain according to the navigation route, and finishing mutual surveying data interaction at fixed points through laser signals when no wireless network signal exists.
(III) the beneficial effects are as follows: the observation and aiming system and method with laser communication provided by the invention obtain the navigation route of the observation and aiming terminal through low-mode three-dimensional modeling of an investigation object, analysis of wireless network signal strength and real-time investigation data of the observation and aiming terminal, so that the observation and aiming terminals can carry out interaction of investigation data at regular time when the wireless network signal exists, and finish the interaction of the investigation data through the laser signal at fixed points when the network signal does not exist, thereby meeting the requirement of investigation work on data timeliness.
Drawings
FIG. 1 is a schematic diagram of a laser communication system according to the present invention;
fig. 2 is a schematic structural diagram of a preferred embodiment of a viewing terminal with laser communication according to the present invention;
fig. 3 is a schematic structural diagram of another preferred embodiment of a viewing terminal with laser communication according to the present invention;
FIG. 4 is a flow chart of a method of laser communication in accordance with the present invention;
1-ocular lens; 2-a display screen; 3-an imaging detector; 4-a first light splitter; 5-an objective lens; 6-a second dichroic sheet; 7-optical axis; 8-cartridge 1; 9-cartridge 2.
Detailed Description
The present invention will be described in further detail with reference to preferred embodiments, and more details are set forth in the following description in order to provide a thorough understanding of the present invention, but it is apparent that the present invention can be embodied in many other forms different from the description herein and can be similarly generalized and deduced by those skilled in the art based on the practical application without departing from the spirit of the present invention, and therefore, the scope of the present invention should not be limited by the contents of this detailed embodiment.
The drawings are schematic representations of embodiments of the invention, and it is noted that the drawings are intended only as examples and are not drawn to scale and should not be construed as limiting the true scope of the invention.
The invention provides a viewing and aiming system with laser communication, which is used for route finding navigation of surveying a terrain by a plurality of viewing and aiming terminals, and the viewing and aiming terminals are also called as viewing and aiming terminals. The number of the sight terminals is 2, and more than 2, and the specific numbers are set according to specific situations, preferably between 2 and 5. The invention provides a sighting terminal with a laser communication function, which is used for realizing real-time data interaction when a sighting terminal has information interaction requirements and has complex geographic conditions of topographic survey and unstable wireless signal receiving.
The invention provides a sight system with laser communication, which is used for route searching navigation of a plurality of sight terminals for surveying a terrain, and comprises a server end, wherein the server end comprises a geographical three-dimensional modeling unit, a network signal detection unit and a route searching unit; the geographic three-dimensional modeling unit is used for acquiring three-dimensional low-modulus data of the surveyed object and performing first three-dimensional modeling on the surveyed object to obtain a first three-dimensional model; the network signal detection unit acquires network signals of corresponding positions according to position data of a surveying object, and performs area division on the network signals according to wireless network signal strength to acquire a timing interaction area with strong wireless network signals, a random interaction area with unstable wireless network signals and a fixed point interaction area without wireless network signals; the fixed point interaction area is an area where the fixed point of the observation and aiming terminal carries out information interaction through a laser signal. The path searching unit gives a navigation route according to the first three-dimensional modeling data and survey data fed back by the observing and aiming terminal in real time, the navigation route comprises a laser information interaction position of the observing and aiming terminal in a fixed point interaction area, and the interaction position is a determined longitude and latitude position and aiming direction indication data of the observing and aiming terminal. And the observing and aiming terminal carries out topographic survey according to the navigation route and completes survey data interaction with each other at fixed points through laser signals when no wireless network signal exists.
Preferably, the server side of the viewing system with laser communication, as shown in fig. 1, includes a geographic three-dimensional modeling unit, configured to collect three-dimensional low-modulus data of a survey terrain, and perform a first three-dimensional modeling on a survey object, so as to obtain a first three-dimensional model. The three-dimensional low-modulus data includes coarse data for obtaining a survey topography, such as location data including longitude, latitude data, altitude, and the like. The server side further comprises a network signal detection unit, and the network signal detection unit acquires the wireless network signal intensity of the corresponding position according to the position data of the surveying object.
According to the first three-dimensional modeling data of the survey object and the corresponding wireless network signal strength, the wireless network signals are subjected to region division, and the method comprises the following steps: the wireless network signal intensity area larger than the first threshold is a timing interaction area of the observing terminals, the first threshold can be set to-50 dbm, and in the timing interaction area, the observing terminals interact detection data with a timing server. The area where the wireless network signal strength fluctuates and affects the interaction of the observing and aiming terminal is between the first threshold and the second threshold, which is called as a random interaction area, the second threshold is preferably set to-70 dbm, and the area where the wireless network signal strength is between-70 dbm and-50 dbm is preferably the area where the wireless network signal strength is corresponding to the second threshold and the first threshold. The area of the wireless network signal intensity smaller than the second threshold value is used for the fixed point of the observing and aiming terminal to perform information interaction through laser signals, and the area of the wireless network signal intensity smaller than the second threshold value is called a fixed point interaction area. And the wireless network signal intensity corresponding to the survey object is divided into a network intensity grid map according to the timing interaction area, the random interaction area and the fixed point interaction area. The interior of each of the timed interactive area, the random interactive area and the fixed point interactive area can also be subdivided by grids for positioning, and the grids are preferably longitude and latitude grids.
The server side of the observing and aiming system with laser communication gives real-time route searching navigation to the observing and aiming terminal according to the first three-dimensional modeling data, the network intensity grid diagram and the route searching unit of the surveying object, as shown in figure 1.
The route searching unit gives a navigation route according to the first three-dimensional modeling data and survey data fed back by the observing and aiming terminal in real time, the navigation route comprises a laser information interaction position of the observing and aiming terminal in a fixed point interaction area, and the interaction position is a determined longitude and latitude position and aiming direction indicating data of the observing and aiming terminal. The aiming direction indicating data is convenient for aiming between the aiming terminals according to preset data, and the aiming speed is improved. The first three-dimensional modeling data are low-modulus data of the surveying object, and the low-modulus data of the first three-dimensional modeling data are updated in real time according to the surveying data acquired by the observing and aiming terminal in real time, so that high-modulus data of the surveying object are obtained step by step. The high-modulus data are ground surface detailed data surveyed by the sighting terminal and comprise high-definition data of real scenes such as roads, plants and mountains. The way-finding unit combines the low-modulus data and the continuously updated high-modulus data of the survey object to gradually refine the survey route.
And the route searching unit searches a viewing communication area meeting survey data interaction in a random interaction area and/or a fixed point interaction area according to the first three-dimensional modeling data and the updated partial high-modulus data, and the area is called a viewing communication point. The observing and aiming communication point is located in the fixed point interaction area, and may be located between the random interaction area and the fixed point interaction area. The condition met by the observing and aiming communication point comprises the following conditions: the area of the observation communication point is 2-5 square kilometers, the visual field between the observation and aiming terminals is as wide as possible, and the large area is not shielded by a barrier, so that the laser communication is conveniently completed. The path searching unit determines a navigation route of laser communication of the observing and aiming terminal according to the first three-dimensional modeling data, the network intensity grid graph and the observing and aiming communication point, so that the observing and aiming terminal can alternately advance among the timing interaction area, the random interaction area and the fixed point interaction area, survey data collected by the observing and aiming terminal can interact fastest and can be transmitted to the first three-dimensional modeling data as soon as possible, and the first three-dimensional modeling data is updated as soon as possible to obtain second high-modulus three-dimensional modeling data.
The way-finding navigation of the way-finding unit of the present invention may employ one or several of the following preferred algorithms,
the first algorithm: and calculating according to the capacity of a storage space of the sight terminal and the estimated video data amount of the surveyed object in unit area to obtain the route of a sight communication point, a timing interaction area and a random interaction area in the path-finding navigation fixed-point interaction area.
The second algorithm: dividing the three-dimensional surface of the first three-dimensional modeling data into a plurality of blocks, and carrying out data survey on different modules of the same block by a plurality of observing and aiming terminals; partitioning the fixed point interaction region by blocks; the block with the fixed point interaction area simultaneously comprises a timing interaction area and a random interaction area; and the route searching unit sets a surveying sequence among the blocks of the three-dimensional surface so as to realize the route searching navigation communication among the blocks. The blocks can also only comprise a timed interaction area or comprise a timed interaction area and a random interaction area, and the navigation route ensures that the data transmission and interaction between the viewing terminals can be realized in the blocks.
The third algorithm: and determining the sequence of laser signal transmission between the viewing terminals according to the specific geographic position of the viewing communication point and the number of the viewing terminals. Taking 3 observing and aiming terminals as an example, the transmission sequence of the laser messages is explained as follows: determining a first observing and aiming terminal, a second observing and aiming terminal and a third observing and aiming terminal; the first observing and aiming terminal sends data to the second observing and aiming terminal, and the third observing and aiming terminal sends data to the second observing and aiming terminal; and then the second observation terminal sends the incremental data outside the first observation terminal to the first observation terminal, and the second observation terminal sends the incremental data outside the third observation terminal to the third observation terminal, so that data interaction between the observation terminals is realized. The core observing and aiming terminal can be preferably selected, other observing and aiming terminals send survey data to the core observing and aiming terminal through laser signals, and then the core observing and aiming terminal sends incremental data corresponding to each observing and aiming terminal through the laser signals for the second time after summarizing and analyzing the data, so that the number of interaction times among the observing and aiming terminals is reduced. And simultaneously, determining the respective geographic positions of the observing and aiming terminals during laser data interaction according to the specific geographic positions of the observing and aiming communication points and the number of the observing and aiming terminals, wherein the geographic positions comprise longitude and latitude, aiming directions, appointed time and time intervals.
The observing and aiming terminal is provided with a longitude and latitude positioning unit and a compass, and when a wireless signal is provided, a navigation route is received and stored in advance, wherein the navigation route comprises an observing and aiming communication point position, a specific geographic position on the observing and aiming communication point, a transmitting and aiming direction and a laser communication time interval. And after the plurality of observing and aiming terminals reach the observing and aiming communication point positions, laser alignment is carried out according to the emission and aiming direction. The laser alignment steps are as follows: aiming terminals emit aiming laser to each other, a light spot with the diameter of 5m is arranged, the specific diameter is designed according to the parameters of divergence angle, power and distance, the two aiming terminals are preliminarily aimed at the eyes according to the aiming laser, and the two instruments are assisted by prompt tones for aiming, such as prompt tones in the center positions of the light spots are rapid and the edges are long and slow. And after aiming, carrying out laser information interaction between the two aiming terminals according to the set first time interval. And after the first laser information interaction is finished, carrying out second laser information interaction according to a preset second time interval. The first time interval is the signal sending preparation time after laser aiming and before laser signal interaction, and is generally 30-50 seconds; and the second time interval is the second time of information interaction after the information preparation of the observing and aiming terminals is finished, generally the interaction of incremental signals is carried out, the second time of information interaction is determined according to the number of the observing and aiming terminals, and the information interaction of the observing and aiming terminals is generally carried out for 2-3 minutes.
A viewing terminal with laser communication comprises an observation unit, a laser information transmitting unit and a laser information receiving unit. The observation unit is used for finishing conventional imaging observation, the laser information transmitting unit loads, modulates and transmits the audio-video information on a laser wave band, and the laser information receiving unit restores the received laser information into the audio-video information.
The observation unit comprises an optical observation module, an imaging acquisition module and a display control module. The optical observation module is connected with the imaging acquisition module, and the display control module is connected with the imaging acquisition module.
The optical observation module comprises an objective lens, a first light splitter, an imaging detector, a display screen and an eyepiece. The objective lens, the first light splitter, the imaging detector, the display screen and the eyepiece are sequentially arranged along the light propagation direction; the objective lens, the first light splitter, the imaging detector, the display screen and the central point of the eyepiece are on the same straight line, and the included angle between the first light splitter and the objective lens is 45 degrees, namely when the observing and aiming system is placed horizontally, the included angle between the first light splitter and the horizontal plane is 45 degrees. The first light splitter is a light splitter for observation light and laser, the first light splitter projects the observation light on the imaging detector through the first light splitter, and the laser which penetrates through the objective lens is refracted to the laser receiving and demodulating module through the first light splitter, or the laser which is emitted by the laser modulating and emitting module is refracted to the objective lens.
The optical observation module further comprises a second light splitter, wherein the second light splitter is a waveband light splitter, the waveband of laser communication is narrow, the waveband can be selected as the marginal waveband of an imaging spectrum, such as 960nm, the light splitter reflects in the waveband of 960nm +/-10 nm and is used for communication, and the light splitter reflects in the waveband of 400-900 visible light and is used for low-light imaging. The second light splitting sheet is arranged in the vertical direction of the first light splitting sheet, and may be vertically above or vertically below, and the position relationship between the second light splitting sheet and the first light splitting sheet is not limited herein as long as light splitting is possible: the beam splitter can split light by forming an oblique angle of 45 degrees with the optical axis. The laser modulation and emission module is arranged in the vertical direction of the second light splitter far away from the first light splitter, and transmits the emitted laser through the second light splitter and the objective lens after being refracted through the first light splitter, so that the emission of the laser is realized. The laser receiving and demodulating module is arranged in the light refraction direction of the second light splitting sheet, when laser penetrates through the objective lens and is refracted to the second light splitting sheet through the first light splitting sheet, the second light splitting sheet refracts the laser to the laser receiving and demodulating module, and laser receiving is achieved.
The imaging acquisition module acquires image information detected by an imaging detector of the optical observation module, and particularly, the imaging acquisition module realizes time sequence control of an imaging detector chip and acquisition of the image information.
The imaging acquisition module sends acquired image information to the display control module, the display control module realizes image information display control, and the display screen is connected with the display control module, namely the display control module controls the image information acquired by the imaging acquisition module to be displayed on the display screen. The display screen is preferably an OLED.
The observation unit further comprises a voice input module and an audio-video storage module, the voice input module and the imaging acquisition module are respectively connected with the audio-video storage module, the audio-video storage module stores audio-video information acquired by the imaging acquisition module and the voice input module, and the audio-video information stored by the audio-video storage module can support external reading and calling of the laser modulation and emission module. The voice input module is used for collecting voice information and can be a microphone. The voice information and the image information constitute the audio-video information.
The laser information transmitting unit comprises the laser modulation and transmission module, and the laser modulation and transmission module comprises a laser and an information loading and modulation circuit. The laser modulation and emission module is respectively connected with the imaging acquisition module, the voice input module and the audio-video storage module. The laser modulation and emission module is used for receiving the real-time image information sent by the imaging acquisition module, the real-time voice information sent by the voice input module or calling historical audio-video information stored by the audio-video storage module, completing the loading, modulation and emission of the audio-video information on a laser wave band and realizing the transmission of the audio-video information through laser.
The laser information receiving unit comprises a laser receiving and modulating module and a voice output module, and the laser receiving and modulating module is respectively connected with the voice output module and the display control module. The laser receiving and modulating module comprises a laser receiving photoelectric device, a corresponding signal acquisition circuit and a laser information analyzing circuit, so that the laser signal is received and demodulated, and the received voice information and image information are restored. The voice output module is used for outputting voice information and can be an earphone or an external sound box. The laser receiving and modulating module restores the received laser information into voice information and image information, the display control module controls the display screen to display the restored image information, and the voice output module plays the restored voice information.
The viewing terminal can be of a double-light-tube structure or a single-light-tube structure.
When the observation and aiming terminal is of a double-light-cylinder structure, one lens cylinder is used for sending laser information and the other lens cylinder is used for receiving the laser information besides the function of completing conventional imaging observation of the double light cylinders, and the double light cylinders integrally form a full-duplex laser communication system.
When the observation and aiming terminal is of a single optical tube structure, the optical tube is used as an optical system for transmitting and receiving laser information to form a half-duplex laser communication system besides the function of completing conventional imaging observation, and the laser communication function can be completed in a time sharing manner.
A preferred embodiment (dual beam barrel structure) of a viewing terminal having laser communication according to the present invention will be described below.
As shown in fig. 2, the voice output module is an earphone or an external speaker. The laser receiving and modulating module comprises a laser receiving photoelectric device, a corresponding signal acquisition circuit and a laser information analyzing circuit, so that the laser signals are received and demodulated, and received voice and video image information is restored. The display control module controls the display screen, receives video image information transmitted by the laser receiving and modulating module or the imaging acquisition module and displays the video image information on the display screen. The display screen is an OLED. The imaging acquisition module realizes the time sequence control of the imaging detector and the acquisition of image information, the imaging acquisition module sends the image information to the display control module to realize the display of the display screen on the image information, and meanwhile, the imaging acquisition module sends the image information to the audio-video storage module to store images. The voice input module can be a microphone, collects voice information and sends the collected voice information to the audio-video storage module for image storage. The voice information and the image information stored by the audio-video storage module support external reading and calling of the laser modulation and emission module. The laser modulation and emission module comprises a laser and an information loading and modulation circuit, and is used for receiving the real-time image information sent by the imaging acquisition module, the real-time voice information sent by the voice input module or calling the historical image information and the voice information stored by the audio-video storage module, and completing the loading, modulation and emission of the audio-video information on a laser wave band.
The sensitive spectrum of the imaging detector is observation light, and the observation light is visible light for visible light or low-light imaging, and the observation light is corresponding infrared light for an infrared night vision device or an infrared telescope. The first light splitting sheet is used for distinguishing observation light from laser light splitting, projecting the observation light and reflecting the laser light.
In fig. 3, 7 is the optical axis of two optical tubes, the observation light passes through the objective lens, and after passing through the beam splitter, the observation light is imaged on the detector, the imaging acquisition module acquires, processes and compresses the formed image, and transmits the processed image to the display control module, so as to control the OLED display screen to display the image in real time, and the human eye observes the OLED display screen through the eyepiece, so that the real-time image can be observed. When a user has a storage requirement, the imaging acquisition module transmits the compressed image to the audio-video storage module simultaneously, and completes storage of image information and voice information simultaneously in combination with voice data input by the voice input module.
When laser communication is carried out, the laser modulation and emission module is used for modulating the audio and video information to be transmitted in the audio and video storage module or modulating the real-time image information of the imaging acquisition module and the real-time voice information of the voice input module, the audio and video information is loaded on a laser wave band, the laser modulation and emission module is used for emitting laser carrying the audio and video information, and the laser is reflected by the first light splitter and expanded by the objective lens of the barrel 1 to finish the emission of the laser information.
When laser information is received, a laser beam is focused through an objective lens of the barrel 2, reflected through the first light splitting sheet, and focused on the laser receiving and demodulating module, the laser receiving and demodulating module performs photoelectric conversion on the laser signal, analyzes the electric signal, restores audio and video information, sends the image information to the display control module, displays the image on the OLED display screen, enables human eyes to observe through an eyepiece, sends the audio signal to the voice output module, and plays voice.
Another preferred embodiment (single light tube structure) of a viewing terminal with laser communication according to the present application will be described below.
As shown in fig. 3, the imaging and displaying optical path is a single tube, the objective lens, the beam splitter, the detector, the display screen and the eyepiece are all one piece, and the laser communication transmission and reception are performed through the same objective lens, so that a second beam splitter is additionally arranged at the laser receiving end, and the second beam splitter is a waveband beam splitter. The modulated laser sent by the laser modulation and emission module is projected by the wave band beam splitter and then expanded and emitted by the objective lens.
The objective lens focuses the laser carrying the audio-video information, the light beam passes through the first beam splitter to perform wave band splitting, and after the laser is reflected, the light beam is reflected by the wave band beam splitter to reach the laser receiving and demodulating module for information analysis.
The imaging, audio-video storage and laser communication processes of the single light cylinder structure are consistent with those of the double light cylinder structure. It should be noted that, in order to eliminate stray light interference, prevent received light information from being interfered by emitted light, and ensure signal quality, the single optical cylinder structure adopts a half-duplex communication mode.
The following illustrates a practical application scenario of a viewing terminal with laser communication:
when the electronic is silent or no electromagnetic signal exists, the two night vision observing and aiming systems are aligned through the two observing and aiming terminals and the eyes at the time and the place appointed by the navigation route, so that the transmission of video and audio information is realized, and the visual field sharing and the communication are completed. For example, in topographic survey, different topographic visual angle images of different positions are rapidly displayed in eyes of decision makers through sights of different persons at different positions.
A kind of terminal of sighting that possesses laser communication, has proposed the concept of sighting device of night-time vision device/telescope that possesses the function of laser communication, it is an instrument and equipment with brand-new function, and has carried on the planning to the module and principle of realizing inside: the objective lens of the sighting device is used as a beam expanding lens and a receiving lens for laser communication transmission, so that the objective lens can simultaneously complete imaging, laser beam expanding and laser focusing functions.
The system realizes integration of observation and laser communication, has the traditional observation and simultaneously adopts the observation and aiming function as a link of laser communication alignment to provide the precondition of laser communication, and simultaneously adopts the laser communication to realize the transmission of audio and video information between observation and aiming equipment, thereby having good confidentiality, not generating electromagnetic signals and enhancing the concealment and anti-interference performance of the equipment; in addition, the imaging objective lens is simultaneously used as a beam expanding lens and a focusing lens for laser communication, and one device has multiple purposes, so that the compactness of the system is increased.
The invention provides a viewing method with laser communication, which is used for the way-finding navigation of surveying a terrain by a plurality of viewing terminals, as shown in fig. 4, and specifically comprises the following steps:
the method comprises the steps of firstly, acquiring three-dimensional low-modulus data of a survey terrain, and carrying out first three-dimensional modeling on a survey object to obtain a first three-dimensional model.
Acquiring wireless network signals of corresponding positions according to the position data of the surveying object, and carrying out region division on the wireless network signals to obtain a timing interaction region with strong wireless network signals, a random interaction region with unstable wireless network signals and a fixed point interaction region without wireless network signals; the fixed point interaction area is an area where the fixed point of the observation and aiming terminal carries out information interaction through a laser signal.
Step three, a navigation route is given according to the first three-dimensional modeling data and survey data fed back by the observing and aiming terminal in real time, the navigation route comprises a laser information interaction position of the observing and aiming terminal in a fixed point interaction area, and the interaction position is a determined longitude and latitude position and aiming direction indication data of the observing and aiming terminal;
and fourthly, surveying the terrain according to the navigation route, and finishing mutual surveying data interaction at fixed points through laser signals when no wireless network signal exists.
The observation and aiming system and method with laser communication provided by the invention obtain the navigation route of the observation and aiming terminal through low-mode three-dimensional modeling of an investigation object, analysis of wireless network signal strength and real-time investigation data of the observation and aiming terminal, so that the observation and aiming terminals can carry out interaction of investigation data at regular time when the wireless network signal exists, and finish the interaction of the investigation data through the laser signal at fixed points when the network signal does not exist, thereby meeting the requirement of investigation work on data timeliness.
The above description is provided for the purpose of illustrating the preferred embodiments of the present invention and will assist those skilled in the art in more fully understanding the technical solutions of the present invention. However, these examples are merely illustrative, and the embodiments of the present invention are not to be considered as being limited to the description of these examples. For those skilled in the art to which the invention pertains, several simple deductions and changes can be made without departing from the inventive concept, and all should be considered as falling within the protection scope of the invention.
Claims (10)
1. A sight system with laser communication is used for a plurality of sight terminals to carry out route finding navigation on topographic survey, and is characterized in that:
the system comprises a server side, wherein the server side comprises a geographical three-dimensional modeling unit, a network signal detection unit and a route searching unit;
the geographic three-dimensional modeling unit is used for acquiring three-dimensional low-modulus data of the surveyed object and performing first three-dimensional modeling on the surveyed object to obtain a first three-dimensional model;
the network signal detection unit acquires network signals of corresponding positions according to position data of a surveying object, and performs area division on the network signals according to wireless network signal strength to acquire a timing interaction area with strong wireless network signals, a random interaction area with unstable wireless network signals and a fixed point interaction area without wireless network signals; the fixed point interaction area is an area where the fixed point of the observation and aiming terminal carries out information interaction through a laser signal;
the path searching unit gives a navigation route according to the first three-dimensional modeling data and survey data fed back by the observing and aiming terminal in real time, the navigation route comprises a laser information interaction position of the observing and aiming terminal in a fixed point interaction area, and the interaction position is a determined longitude and latitude position and aiming direction indication data of the observing and aiming terminal;
and the observing and aiming terminal carries out topographic survey according to the navigation route and completes survey data interaction with each other at fixed points through laser signals when no wireless network signal exists.
2. The viewing system with laser communication function of claim 1, wherein the network signal detection unit sets a wireless network signal strength area greater than a first threshold as a timed interaction area of the viewing terminal; setting a wireless network signal intensity area between a first threshold and a second threshold as a random interaction area of the observing and aiming terminal; and setting the wireless network signal intensity area smaller than the second threshold value as a fixed point interaction area of the observing terminal.
3. The viewing system with laser communication of claim 1, wherein the server side updates the low-modulus data of the first three-dimensional modeling data in real time according to survey data acquired by the viewing terminal in real time to obtain the high-modulus data of the survey object.
4. The viewing system with laser communication of claim 1, wherein a viewing communication area satisfying survey data interaction is found in a random interaction area and/or a fixed point interaction area, which is called a viewing communication point; the path searching unit determines a navigation route of the observing and aiming terminal for completing information interaction through a laser signal according to the first three-dimensional modeling data, the network intensity grid graph and the observing and aiming communication point, so that the observing and aiming terminal is communicated and interpenetrated among the timing interaction area, the random interaction area and the fixed point interaction area.
5. The viewing system with laser communication of claim 1, wherein the three-dimensional surface of the first three-dimensional modeling data is divided into blocks, and a plurality of viewing terminals perform data surveys on different modules of the same block; partitioning the fixed point interaction region by blocks; the block with the fixed point interaction area simultaneously comprises a timing interaction area and a random interaction area; and the route searching unit sets a surveying sequence among the blocks of the three-dimensional surface so as to realize the route searching navigation communication among the blocks.
6. The viewing system with laser communication of claim 1, wherein the viewing terminal comprises an observation unit, a laser information transmitting unit and a laser information receiving unit; the observation unit is used for finishing conventional imaging observation, the laser information transmitting unit loads, modulates and transmits audio-video information on a laser wave band, and the laser information receiving unit restores the received laser information into the audio-video information;
the observation unit comprises an optical observation module, an imaging acquisition module and a display control module, wherein an imaging detector of the optical observation module is connected with the imaging acquisition module, the imaging acquisition module is connected with the display control module, and the display control module is connected with a display screen;
the laser information transmitting unit comprises the laser modulation and transmitting module, and the laser modulation and transmitting module is respectively connected with the imaging acquisition module, the voice input module and the audio-video storage module;
the laser information receiving unit comprises a laser receiving and modulating module and a voice output module, and the laser receiving and modulating module is respectively connected with the voice output module and the display control module.
7. The viewing system with laser communication of claim 6, wherein the observation unit further comprises a voice input module and an audio/video storage module, the voice input module is used for collecting voice information, the voice input module and the imaging collection module are respectively connected to the audio/video storage module, and the audio/video storage module stores the audio/video information collected by the imaging collection module and the voice input module.
8. The viewing system with laser communication of claim 6, wherein the optical observation module comprises an objective lens, a first light splitter, an imaging detector, a display screen and an eyepiece, and the objective lens, the first light splitter, the imaging detector, the display screen and the eyepiece are arranged in sequence along a light propagation direction.
9. The viewing system with laser communication of claim 8, wherein said optical observation module further comprises a second dichroic sheet disposed in a vertical direction of said first dichroic sheet;
the second light splitting sheet is provided with a laser modulation and emission module in the vertical direction far away from the first light splitting sheet; and a laser receiving and demodulating module is arranged in the light refraction direction of the second light splitting sheet.
10. A viewing method with laser communication is used for a plurality of viewing terminals to carry out route finding navigation on topographic survey, and specifically comprises the following steps:
acquiring three-dimensional low-modulus data of a survey terrain, and carrying out first three-dimensional modeling on a survey object to obtain a first three-dimensional model;
acquiring wireless network signals of corresponding positions according to the position data of the surveying object, and carrying out region division on the wireless network signals to obtain a timing interaction region with strong wireless network signals, a random interaction region with unstable wireless network signals and a fixed point interaction region without wireless network signals; the fixed point interaction area is an area where the fixed point of the observation and aiming terminal carries out information interaction through a laser signal;
step three, a navigation route is given according to the first three-dimensional modeling data and survey data fed back by the observing and aiming terminal in real time, the navigation route comprises a laser information interaction position of the observing and aiming terminal in a fixed point interaction area, and the interaction position is a determined longitude and latitude position and aiming direction indication data of the observing and aiming terminal;
and fourthly, surveying the terrain according to the navigation route, and finishing mutual surveying data interaction at fixed points through laser signals when no wireless network signal exists.
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