CN103389519A - Detecting and warning system for laser attacking directions - Google Patents
Detecting and warning system for laser attacking directions Download PDFInfo
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- CN103389519A CN103389519A CN2012101464790A CN201210146479A CN103389519A CN 103389519 A CN103389519 A CN 103389519A CN 2012101464790 A CN2012101464790 A CN 2012101464790A CN 201210146479 A CN201210146479 A CN 201210146479A CN 103389519 A CN103389519 A CN 103389519A
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Abstract
The invention belongs to the technical field of detection and warning and particularly relates to a detecting and warning system for laser attacking directions. The detecting and warning system for the laser attacking directions is low in cost and high in performance. The detecting and warning system comprises an optical module, a signal processing module and a display module. The detecting and warning system is characterized in that the optical module, the signal processing module and the display module are sequentially connected; the optical module is responsible for receiving of laser signals and spatial division of a field of view, the signal processing module converts the laser signals acquired from the optical module into electrical signals and sends the electrical signals to a first single-chip microcomputer for processing after amplifying processing, and the display module is used for displaying information about the attacking directions.
Description
Technical field
The invention belongs to and survey and the warning technology field, relate in particular to a kind of laser attacking direction and survey and warning system.
Background technology
Along with the widespread use militarily of laser ranging, goal direct and target marker, accelerated development laser reconnaissance warning technology has become the top priority of laser countermeasure (s).Usually, alarm device need to survey to attack the information such as incident direction, wavelength and coding thereof of laser, wherein, survey incident laser direction particularly important, therefore, developed some laser incident direction detection systems both at home and abroad, but these systems exist the contradiction that cost and performance restrict mutually, therefore, Low-cost, high performance laser direction detection system have important practical significance.
Summary of the invention
The present invention is exactly for the problems referred to above, provides the laser attacking direction that a kind of cost is low, performance is high to survey and warning system.
For achieving the above object, the present invention adopts following technical scheme, the present invention includes optical module, signal processing module and display module, and its structural feature optical module, signal processing module, display module are connected successively; Described optical module is responsible for the reception of laser signal and the spatial division of visual field, described signal processing module will be converted into electric signal from the laser signal that optical module obtains, send into the first single-chip microcomputer and process after amplifying processing, described display module is used for showing the information of attacking direction.
As a kind of preferred version, optical module of the present invention is comprised of lens combination and optical fiber, and described lens combination is comprised of concavees lens and convex lens, and described concavees lens are used for filtering.
As another kind of preferred version, signal processing module of the present invention comprises artificial circuit part and digital circuit part.
In addition, display module of the present invention consists of 19 LED and second singlechip; Described LED is used for orientation and shows.
Beneficial effect of the present invention
The information such as the present invention passes through optical module, signal processing module and display module, detectable incident direction, wavelength and coding thereof of attacking laser and performance are high.Member of the present invention is on market easily purchases product, and therefore, cost of the present invention is low.
Description of drawings
Fig. 1 block diagram of system of the present invention;
Fig. 2 is optical module structure schematic diagram of the present invention;
Fig. 3 is that display module LED of the present invention arranges schematic diagram.
Embodiment
As shown in the figure, the present invention includes optical module, signal processing module and display module, optical module, signal processing module, display module are connected successively; Described optical module is responsible for the reception of laser signal and the spatial division of visual field, described signal processing module will be converted into electric signal from the laser signal that optical module obtains, send into the first single-chip microcomputer and process after amplifying processing, described display module is used for showing the information of attacking direction.
As shown in Figure 2, described optical module is comprised of lens combination and optical fiber, and described lens combination is comprised of concavees lens and convex lens, and described concavees lens are used for filtering; Described optical fiber is silica fibre,, because the numerical aperture of silica fibre only has 10～20 ° usually, can not reach the field range of 60 °, therefore, need to be equipped with lens combination to meet the visual field requirement at the optical fiber head end.Selected optical fiber core diameter is 400 μ m, and numerical aperture is 0.22.The laser of getting wavelength and be 1.06 μ m calculates focus as reference wavelength, and the optical fiber head-end is placed in its focus place.Concavees lens only allow wavelength to pass through greater than the infrared light more than 0.78 μ m, effectively the interference of the visible light such as filtering sunshine, cannon flash of light.(in Fig. 2, f is focal length)
Described signal processing module comprises artificial circuit part and digital circuit part.In photoelectric switching circuit, for three kinds of laser pulses to pulsewidth 10ns respond rapidly, (model: GD3551Y) carry out opto-electronic conversion, its response time is 1.5ns to have selected the InGaAs type photodiode that photosurface is large, the response wave length scope is 900-1700um.Photoelectric switching circuit is comprised of photodetector, current-limiting resistance, pull-up resistor.Current-limiting resistance is between power supply and detector, prevents from burning photodetector when electric current is excessive.If the current direct to output taps into capable filtering, its signal intensity can decline to a great extent, and therefore, will be voltage signal by the current conversion of photodetector output by pull-up resistor, to reduce the signal attenuation amplitude.Filtering circuit uses the single order high-pass filtering circuit, because the incident pulse laser pulse width is 10ns, its corresponding electric signal centre frequency is 33MHz, and after forming filtering circuit by electric capacity and resistance, further the interference of the stray light signal infrared part that injects is leaked in effective filtering by optical window.Amplification circuits, use the AD8072 operational amplifier to form the two-stage calculation amplifying circuit, the first order is that homophase amplifies, the second level is oppositely to amplify, connect by electric capacity between the two stage amplifer circuit, its Main Function is the direct current offset of isolation one-level amplifying signal, and two-stage amplifier output is access comparer MAX9201 directly.The amplifying circuit enlargement factor is 20, is mainly the laser signal that is direct incident due to this alarm device detected object, and its light intensity is larger, is not less than 1mW/cm2, and available voltage signal, up to 0.2V, is enough to meet the detection demand after opto-electronic conversion.Noise signal after the double inhibition of optically filtering and electricity filtering, transforms the not enough 0.01V of the electric signal that obtains, and with the laser signal contrast, differs larger, can be by the thorough filtering of the threshold voltage that comparer is set.The digital circuit part mainly is comprised of optocoupler, monostalbe trigger, single-chip microcomputer.Optocoupler is isolated mimic channel and digital circuit, prevents the impact of digital circuit on mimic channel; Monostalbe trigger is used for signal is carried out time delay, makes more than signal can keep 20us the time requirement of processing to meet single-chip microcomputer; The inner editor of single-chip microcomputer polling routine, realize the coding to direction information, and its method is, uses 24 I/O pins, and its address corresponds respectively to independent visual field vertical with 16 district, 8 level independence visual fields, then coding of each independent visual field correspondence; When having more than one pin to receive signal, the overlay region at corresponding these places, regional center (RC) position, 2 adjacent tunnels are arranged at most due to every layer, two-layer have at most 4 tunnels, can respond laser signal simultaneously, therefore, all possible situation is encoded one by one, when having laser to attack, the single-chip microcomputer basis can judge attacking direction by pinout information, and corresponding encoded is sent to display module by serial ports.
As shown in Figure 3, described display module consists of 19 LED and second singlechip; Described LED is used for orientation and shows.Single-chip microcomputer judges single-chip microcomputer in signal processing module by the coding that serial communication mode transports, then the LED of correspondence is lighted and realizes alarm.16 LED divide equally arrangement on a circle, corresponding No. 16 LED of No. 1 independent horizontal subregion wherein, and 1, No. 2 folded corresponding No. 2 LED of overlapping partition of horizontal independent partitions, the rest may be inferred clockwise; Other 3 LED form a line, respectively the zone of corresponding vertical field of view subregion.
Claims (4)
1. the laser attacking direction is surveyed and warning system, comprises optical module, signal processing module and display module, it is characterized in that an optical module, signal processing module, display module are connected successively; Described optical module is responsible for the reception of laser signal and the spatial division of visual field, described signal processing module will be converted into electric signal from the laser signal that optical module obtains, send into the first single-chip microcomputer and process after amplifying processing, described display module is used for showing the information of attacking direction.
2. the laser attacking direction is surveyed and warning system according to claim 1, it is characterized in that described optical module is comprised of lens combination and optical fiber, and described lens combination is comprised of concavees lens and convex lens, and described concavees lens are used for filtering.
3. the laser attacking direction is surveyed and warning system according to claim 1, it is characterized in that described signal processing module comprises artificial circuit part and digital circuit part.
4. the laser attacking direction is surveyed and warning system according to claim 1, it is characterized in that described display module consists of 19 LED and second singlechip; Described LED is used for orientation and shows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012101464790A CN103389519A (en) | 2012-05-11 | 2012-05-11 | Detecting and warning system for laser attacking directions |
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| CN2012101464790A CN103389519A (en) | 2012-05-11 | 2012-05-11 | Detecting and warning system for laser attacking directions |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504864A (en) * | 2017-08-04 | 2017-12-22 | 南京理工大学 | A kind of comprehensive laser engineered net shaping construction method |
| CN107504863A (en) * | 2017-08-04 | 2017-12-22 | 南京理工大学 | Comprehensive laser engineered net shaping based on 4 quadrant detector |
| CN107589465A (en) * | 2017-09-02 | 2018-01-16 | 南京理工大学 | A kind of laser engineered net shaping of hemispherical dome structure |
| CN109489489A (en) * | 2018-10-11 | 2019-03-19 | 湖北华中光电科技有限公司 | A kind of big visual field laser warning method and system |
| CN109975997A (en) * | 2019-02-11 | 2019-07-05 | 中国人民解放军军事科学院军事医学研究院 | Multifunctional laser protecting glasses and laser acquisition alert set composite |
-
2012
- 2012-05-11 CN CN2012101464790A patent/CN103389519A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504864A (en) * | 2017-08-04 | 2017-12-22 | 南京理工大学 | A kind of comprehensive laser engineered net shaping construction method |
| CN107504863A (en) * | 2017-08-04 | 2017-12-22 | 南京理工大学 | Comprehensive laser engineered net shaping based on 4 quadrant detector |
| CN107504864B (en) * | 2017-08-04 | 2019-09-13 | 南京理工大学 | A kind of comprehensive laser engineered net shaping construction method |
| CN107589465A (en) * | 2017-09-02 | 2018-01-16 | 南京理工大学 | A kind of laser engineered net shaping of hemispherical dome structure |
| CN109489489A (en) * | 2018-10-11 | 2019-03-19 | 湖北华中光电科技有限公司 | A kind of big visual field laser warning method and system |
| CN109489489B (en) * | 2018-10-11 | 2020-10-23 | 湖北华中光电科技有限公司 | Large-view-field laser warning method and system |
| CN109975997A (en) * | 2019-02-11 | 2019-07-05 | 中国人民解放军军事科学院军事医学研究院 | Multifunctional laser protecting glasses and laser acquisition alert set composite |
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Application publication date: 20131113 |