CN201518483U - Solar blind ultraviolet laser communication system - Google Patents
Solar blind ultraviolet laser communication system Download PDFInfo
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- CN201518483U CN201518483U CN2009201105594U CN200920110559U CN201518483U CN 201518483 U CN201518483 U CN 201518483U CN 2009201105594 U CN2009201105594 U CN 2009201105594U CN 200920110559 U CN200920110559 U CN 200920110559U CN 201518483 U CN201518483 U CN 201518483U
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Abstract
The utility model provides a solar blind ultraviolet laser communication system which is composed of a transmission end and a receiving end. The transmission end is composed of a solar blind ultraviolet laser and a divergent lens. The light transmitted from the ultraviolet laser firstly passes through the divergent lens so that a signal light scatters with a certain divergence angle. The receiving end is composed of one or a plurality of ultraviolet detector, wherein, a photoelectric detector is composed of solar blind bandpass ultraviolet filter, a photomultiplier and a photodetector bracket. After the received optical signal passes filtering and noise reduction by the solar blind bandpass filter, the received optical signal is transformed to an electric signal by the photomultiplier. Then the information is restored by a back amplifying filtering demodulating circuit for realizing a non-light-of-sight point-to-point or point to multi-point broadcasting mode communication. The utility model adopts the ultraviolet laser as a transmission light source. Furthermore the divergent lens is equipped at the light outlet. The solar blind ultraviolet laser communication system has the advantages of longer transmission distance, simple structure of the receiving end, small volume, capability for being carried about, and stronger mobility.
Description
Technical field
The utility model relates to a kind of optical communication technique of Ultra-Violet Laser, especially relates to a kind of day blind Ultra-Violet Laser communication system of free space.
Background technology
Develop at present faster that free space optical communication mainly is infrared laser communication, compare with microwave communication, radio communication, the confidentiality and the anti-interference of infrared laser communication are relatively good.But the disadvantage of infrared laser communication can only realize point-to-point horizon communication exactly, if there is barrier to stop between communication line, its communication will be interrupted.And the free space ultraviolet communication of more and more being noted by people in recent years can either realize that horizon communication also can realize non line of sight communication, has remedied the deficiency of infrared laser communication.
Because ultraviolet light has stronger scattering process when transmitting in free atmosphere, thereby can propagate in non-directional mode, promptly can the cut-through thing and realize non line of sight communication.Ultraviolet communication is to utilize the carrier of the ultraviolet light wave of " day is blind " wave band as information, is transmission medium with the atmosphere, can realize based on point-to-point or some communication to multiple spot (broadcast mode) in the local scope.Ultraviolet light is used to communicate by letter and has many advantages.Low eavesdropping rate, low level are debated rate, strong interference immunity, comprehensive property, all weather operations etc., and the non-direct-view of ultraviolet communication can be described as the ultraviolet communication the most outstanding advantage of other communications of comparing.
Summary of the invention
The purpose of this utility model is to provide a kind of day blind Ultra-Violet Laser communication system of novel free space.It utilizes the scattering process of ultraviolet light, is implemented in point-to-point in the free space or a bit to non line of sight ultraviolet communication of multiple spot by simple structure.
The day blind Ultra-Violet Laser communication system of free space of the present utility model is made of transmitting terminal and receiving terminal two parts.(ultraviolet laser of 200nm～280nm) and divergent lens constitute described transmitting terminal by non-solar-blind band, described receiving terminal is made of one or more UV-detector, detection by a plurality of photodetectors receives, and realizes some non line of sight ultraviolet communication to multiple spot.
Wherein, the divergent lens of described transmitting terminal is placed in the light-emitting window place of described ultraviolet laser, can adopt the ultraviolet lens of various materials such as ultraviolet melten glass.Ultraviolet laser adopts the internal modulation mode as the light source of the information of transmission, and angle can freely be controlled.The light that described ultraviolet laser sends is earlier through described divergent lens, make flashlight be launched (considering that generally divergence half-angle is about 5 °～15 °) with bigger dispersion angle, in atmospheric channel, light is mainly propagated with the form of scattering, and the launching elevation of transmitting terminal is between 0 °～90 °.
The UV-detector of described receiving terminal is propped up by the logical ultraviolet filter of blind type band of day, photomultiplier and photoelectric detector and is configured to.After the optical filtering and noise reduction of the light signal that receives, be transformed into the signal of telecommunication,, thereby realize transmission of Information again through the amplification filtering demodulator circuit restore information of rear end by described photomultiplier through described day blind bandpass filter.
The reception elevation angle of described receiving terminal is also between 0 °～90 °.UV-detector at receiving terminal can receive in all directions, realizes non line of sight communication.UV-detector can be independent use, realizes the point-to-point communication of non line of sight, also can use a plurality ofly simultaneously, and promptly n 〉=2 o'clock are realized point-to-point or some communication to the broadcast mode of multiple spot.
In addition, collect the ability of light, a collector lens can also be set in the front of filter again in order to increase receiving terminal.
The beneficial effect of day blind Ultra-Violet Laser communication system of free space of the present utility model is: constitute by simple structure, the characteristics that have stronger scattering process according to ultraviolet light, utilize the carrier of the ultraviolet light wave of non-solar-blind band as information, with the atmosphere is transmission medium, realizes based on point-to-point or some radio communication to the multicast pattern in the local scope.Adopt the light source of ultraviolet laser as the information of transmission, and the light-emitting window place at the ultraviolet laser of transmitting terminal also is provided with divergent lens, flashlight is launched with bigger dispersion angle, thereby can propagate in non-directional mode, can the cut-through thing and realize the non line of sight ultraviolet communication.Ultraviolet communication has low eavesdropping rate, low level is debated advantages such as rate, strong interference immunity, comprehensive property, all weather operations.And receiving terminal is simple in structure, volume is small and exquisite, can carry, and mobility is stronger, is highly suitable for the secure communication in the local scope.
Description of drawings
Fig. 1 is that the principle of day blind Ultra-Violet Laser communication system of free space of the present utility model constitutes schematic diagram.
Fig. 2 be free space of the present utility model day blind Ultra-Violet Laser communication system the formation schematic diagram of UV-detector of receiving terminal.
Embodiment
Be described further below in conjunction with the day blind Ultra-Violet Laser communication system of the drawings and specific embodiments, but should do not limit protection range of the present utility model with this to free space of the present utility model.
Fig. 1 is that the principle of day blind Ultra-Violet Laser communication system of free space of the present utility model constitutes schematic diagram.As shown in Figure 1, the day blind Ultra-Violet Laser communication system of free space of the present utility model is made of transmitting terminal and receiving terminal two parts.Described transmitting terminal is made of the ultraviolet laser 1 and the divergent lens 2 of non-solar-blind band, described receiving terminal is made of one or more UV-detector 3, detection by a plurality of photodetectors receives, and can realize point-to-point or some non line of sight ultraviolet communication to multiple spot.
Because present available low pressure mercury lamp light source is comprehensive emission light, power is not easy to concentrate, and present domestic day blind area ultraviolet light-emitting diode also do not have the product of practicability.So in the utility model, the light source that ultraviolet laser 1 conduct that transmitting terminal adopts angle freely to control sends information adopts the internal modulation mode.The divergent lens 2 of described transmitting terminal can adopt the ultraviolet lens of various materials such as ultraviolet melten glass, is placed in the light-emitting window place of described ultraviolet laser 1.The light that ultraviolet laser 1 sends is earlier through divergent lens 2, make flashlight be launched (considering that generally divergence half-angle is about 5 °～15 °) with bigger dispersion angle, in atmospheric channel, light is mainly propagated with the form of scattering, and the launching elevation of transmitting terminal is between 0 °～90 °.
Fig. 2 is the formation schematic diagram of UV-detector of receiving terminal of blind Ultra-Violet Laser communication system of free space day of the present utility model.As shown in Figure 2, the UV-detector 3 of receiving terminal is made of the logical ultraviolet filter 5 of blind type band of day, photomultiplier 6 and photoelectric detector support 7.In addition, collect the ability of light, a collector lens 4 can also be set in the front of filter 5 in order to increase receiving terminal.Collector lens 4 is in order to collect more flashlight, the light signal that receives is through a day blind bandpass filter 5, filter out stray light by it, reduce after the noise, be transformed into the signal of telecommunication by described photomultiplier 6, again through the amplification filtering demodulator circuit restore information of rear end, thereby realize transmission of Information.
The reception elevation angle of receiving terminal is also between 0 °～90 °.Can receive in all directions by UV-detector 3 at receiving terminal, realize non line of sight communication.UV-detector 3 can be independent use, realizes the point-to-point communication of non line of sight, also can use a plurality of UV-detector 3 simultaneously at receiving terminal, i.e. n 〉=2 o'clock can be realized point-to-point or a bit to communication of multiple spot.
Ultra-Violet Laser communication system in the free space of present embodiment, (ultraviolet light of 200nm～280nm) is as the carrier of signal transmission to be based on non-solar-blind band.Because scattering and the decay of ultraviolet light in atmosphere, so the utility model is applicable to the secure communication in the local scope.
Claims (6)
- One kind day blind Ultra-Violet Laser communication system, constitute by transmitting terminal and receiving terminal two parts, it is characterized in that,Described transmitting terminal by day blind ultraviolet laser and divergent lens constitute, light that described ultraviolet laser sends through described divergent lens, makes flashlight scatter out with certain dispersion angle earlier,Described receiving terminal is made of one or more UV-detector, wherein, photoelectric detector is propped up by the logical ultraviolet filter of blind type band of day, photomultiplier and photodetector and is configured to, after the optical filtering and noise reduction of the light signal that receives through described day blind type bandpass filter, be transformed into the signal of telecommunication by described photomultiplier, again through the amplification filtering demodulator circuit restore information of rear end, thereby realize the point-to-point of non line of sight or a bit to communication of the broadcast mode of multiple spot.
- 2. as claimed in claim 1 day blind Ultra-Violet Laser communication system is characterized in that, in the described UV-detector, also is provided with collector lens in the front of described day blind type bandpass filter, in order to collect more flashlight.
- 3. as claimed in claim 1 or 2 day blind Ultra-Violet Laser communication system is characterized in that, the logical ultraviolet laser of blind type band of day of described transmitting terminal adopts the internal modulation mode, and non-solar-blind band is 200nm～280nm.
- 4. as claimed in claim 1 or 2 day blind Ultra-Violet Laser communication system is characterized in that the divergent lens of described transmitting terminal is placed in the light-emitting window place of described ultraviolet laser.
- 5. as claimed in claim 1 or 2 day blind Ultra-Violet Laser communication system is characterized in that the launching elevation of described transmitting terminal is between 0 °～90 °, and divergence half-angle is between 5 °～15 °.
- 6. as claimed in claim 1 or 2 day blind Ultra-Violet Laser communication system is characterized in that the reception elevation angle of described receiving terminal is between 0 °～90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201105594U CN201518483U (en) | 2009-07-29 | 2009-07-29 | Solar blind ultraviolet laser communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201105594U CN201518483U (en) | 2009-07-29 | 2009-07-29 | Solar blind ultraviolet laser communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201518483U true CN201518483U (en) | 2010-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201105594U Expired - Fee Related CN201518483U (en) | 2009-07-29 | 2009-07-29 | Solar blind ultraviolet laser communication system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986579A (en) * | 2009-07-29 | 2011-03-16 | 中国科学院空间科学与应用研究中心 | Day blind ultraviolet laser communication system in free space |
| CN102324973A (en) * | 2011-05-25 | 2012-01-18 | 西安理工大学 | Ultraviolet light non-line of sight (NLOS) communication directional access method based on angular sensing |
| CN103175523A (en) * | 2012-12-18 | 2013-06-26 | 江苏五维电子科技有限公司 | Pilot instrument based on solar blind ultraviolet light signal |
| CN108988942A (en) * | 2018-08-23 | 2018-12-11 | 西安蜂语信息科技有限公司 | The communication means and device of lighting apparatus |
| CN112235046A (en) * | 2020-10-20 | 2021-01-15 | 西安工程大学 | Noise reduction processing method for wireless ultraviolet communication |
| CN112737677A (en) * | 2021-01-21 | 2021-04-30 | 南京邮电大学 | Solar blind ultraviolet light communication system based on quantum dot glass |
-
2009
- 2009-07-29 CN CN2009201105594U patent/CN201518483U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101986579A (en) * | 2009-07-29 | 2011-03-16 | 中国科学院空间科学与应用研究中心 | Day blind ultraviolet laser communication system in free space |
| CN102324973A (en) * | 2011-05-25 | 2012-01-18 | 西安理工大学 | Ultraviolet light non-line of sight (NLOS) communication directional access method based on angular sensing |
| CN102324973B (en) * | 2011-05-25 | 2014-10-01 | 西安理工大学 | Ultraviolet light non-line of sight (NLOS) communication directional access method based on angular sensing |
| CN103175523A (en) * | 2012-12-18 | 2013-06-26 | 江苏五维电子科技有限公司 | Pilot instrument based on solar blind ultraviolet light signal |
| CN103175523B (en) * | 2012-12-18 | 2015-08-12 | 江苏南大五维电子科技有限公司 | Based on the piloting instrument of solar blind ultraviolet light signal |
| CN108988942A (en) * | 2018-08-23 | 2018-12-11 | 西安蜂语信息科技有限公司 | The communication means and device of lighting apparatus |
| CN112235046A (en) * | 2020-10-20 | 2021-01-15 | 西安工程大学 | Noise reduction processing method for wireless ultraviolet communication |
| CN112235046B (en) * | 2020-10-20 | 2023-10-31 | 深圳万知达科技有限公司 | Noise reduction processing method for wireless ultraviolet communication |
| CN112737677A (en) * | 2021-01-21 | 2021-04-30 | 南京邮电大学 | Solar blind ultraviolet light communication system based on quantum dot glass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20140729 |
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| EXPY | Termination of patent right or utility model |