CN103308029A - Automatic cat eye effect target distance measurement method - Google Patents
Automatic cat eye effect target distance measurement method Download PDFInfo
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- CN103308029A CN103308029A CN2013101832392A CN201310183239A CN103308029A CN 103308029 A CN103308029 A CN 103308029A CN 2013101832392 A CN2013101832392 A CN 2013101832392A CN 201310183239 A CN201310183239 A CN 201310183239A CN 103308029 A CN103308029 A CN 103308029A
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Abstract
The invention provides an automatic cat eye effect target distance measurement method which belongs to the technical field of laser imaging and laser ranging, and mainly solves the problem that the cat eye effect target is difficultly aimed during ranging due to the small size. The method is characterized in that optical observation equipment and photoelectric equipment with the cat eye effect are detected by employing a cat eye effect target detection module, and after the cat eye effect target detection module discovers the cat eye effect target, the cat eye effect target is automatically identified, a red warning frame is displayed on a display module, and the target is marked. Then, a cross cursor is arranged in the warning frame, the cat eye effect target detection module is triggered to transmit a distance measurement trigger signal to a distance measurement module, and the distance measurement module receives the distance measurement trigger signal and measures the distance of the cat eye effect target, so that automatic small target distance measurement is realized. The method has wide application prospects in the technical fields of photoelectric countermeasure, laser imaging and ranging.
Description
(1) technical field
Target automatic range method that the present invention relates to a kind of " chatoyancy ".This method belongs to laser imaging and laser ranging technique field.
(2) background technology
When the optics that has an optical lens when one of laser irradiation is seen and is taken aim at equipment and optoelectronic device, equipment is taken aim in the optics sight and optoelectronic device can be similar to the combination of regarding lens and a detector focal plane as, laser in its visual field is through the effect of optical system, near the focal plane of optical system, form one " image patch ", this " image patch " is equivalent to a light source, laser reflects back with certain beam divergence angle through optical system, by the light path principle of reversibility, laser beam can be returned along former road, thereby generation good directionality, the reflected in parallel light of concentration of energy, its light intensity substantially exceeds common diffuse reflection light intensity, " chatoyancy " of Here it is imaging optical system.Based on the detection system of " chatoyancy ", because it has optics is seen the effect of taking aim at equipment and optoelectronic device early warning, have very high using value.
Laser ranging is owing to have non-cpntact measurement, far measuring distance, and it is fast and simple to find range, distance accuracy advantages of higher and being widely adopted.It sends laser pulses irradiate to target surface to be measured by pulsed laser, and target surface to be measured is the laser of reflected illumination on it, calculates distance value thereby received by detector by target laser light reflected signal.The optical system of laser ranging comprises: range finding laser emission optical system, receiving optics, the two-way system optical axis need have high precision collimation and stability, the plain shaft parallelism error should be less than 0.1mrad, could find range to " chatoyancy " aim target, and range finder using laser plain shaft parallelism error is 0.3mrad usually.Therefore " chatoyancy " target size very little, be difficult to aiming, thereby can't accurately record the distance value of " chatoyancy " target.
The present invention's " chatoyancy " target automatic range method, " chatoyancy " target detection module and range finder module are combined, can carry out automatic range to " chatoyancy " target, solve because of " chatoyancy " target size problem very little, that be difficult to aim at when it is found range." chatoyancy " target detection module need not to rely on the heat radiation of ambient lighting and object itself with laser floodlighting target, therefore can realize finding range round the clock.This method can be round the clock to " chatoyancy " target automatic range, and it can be widely used in fields such as security protection, monitoring and measurement.
(3) summary of the invention
1, purpose: the objective of the invention is to propose a kind of " chatoyancy " target automatic range method, it can be to the identification of " chatoyancy " target and automatic range.That this method has solved is little because of " chatoyancy " target size, be difficult to aiming when it is found range, thereby can't accurately record the problem of distance value.
2, technical scheme: the present invention proposes a kind of " chatoyancy " target automatic range method." chatoyancy " target detection module and range finder module are combined, wherein the optical system of " chatoyancy " target detection module and range finder module adopts three tunnel optical systems, comprise: exploring laser light optical transmitting system, range finding laser emission optical system and receiving optics, three tunnel system optical axis have high precision collimation and stability.In " chatoyancy " target detection module, employing character stacked system is superimposed upon tracking cross in the video and makes the tracking cross center and the receiving optics optical axis coincidence.
" chatoyancy " target detection module is seen the optics with " chatoyancy " and is taken aim at equipment and optoelectronic device is surveyed, and after detecting " chatoyancy " target, to its automatic identification, and shows that at display module red alert box is with target label.At this moment, tracking cross is placed in the alert box, trigger " chatoyancy " target detection module and send the range finding trigger pip to range finder module, after range finder module receives the range finding trigger pip of " chatoyancy " target detection module, begin " chatoyancy " target is carried out automatic range, and distance value is sent into " chatoyancy " target detection module, adopt the character stacked system that distance value is superimposed upon in the video, shown by display module, thereby realize little target automatic range.
Because target is very little, the range finding laser echo signal is very weak, therefore adopting wavelength is semiconductor laser and the high sensitivity avalanche photodide of 1550nm, by repeatedly launch laser pulse, receive repeatedly return laser beam, signal integration and correlation technique handle, the weak echo signal is amplified, thereby realize little target range finding.Because " chatoyancy " target detection module adopts laser active illumination, need not to rely on the heat radiation of ambient lighting and object itself, can the round-the-clock imaging, can realize finding range round the clock.Therefore the present invention can be round the clock to " chatoyancy " target identification back automatic range.
3, advantage and effect: advantage of the present invention be when " chatoyancy " target detection module detect and identify the optics with " chatoyancy " see take aim at equipment and optoelectronic device after, the control range finder module is found range to target, thereby realize " chatoyancy " target automatic range, solved little because of " chatoyancy " target size, be difficult to the aiming, thereby the problem that can't accurately find range, and can be round the clock to " chatoyancy " target identification back automatic range.
(4) description of drawings
Fig. 1 is " chatoyancy " target automatic range method flow diagram.
(5) embodiment
The present invention is a kind of " chatoyancy " target automatic range method, " chatoyancy " target detection module and range finder module are combined, wherein the optical system of " chatoyancy " target detection module and range finder module adopts three tunnel optical systems, comprise: exploring laser light optical transmitting system, range finding laser emission optical system and receiving optics, three tunnel system optical axis have high precision collimation and stability.In " chatoyancy " target detection module, employing character stacked system is superimposed upon tracking cross in the video and makes the tracking cross center and the receiving optics optical axis coincidence.
It is detecting laser that " chatoyancy " target detection module adopts the 915nm semiconductor pulse laser.Detecting laser is through optical fiber coupling, beam shaping output uniform light spots, optics with " chatoyancy " is seen with certain angle of divergence through optical transmitting system again and taken aim at equipment and optoelectronic device throws light on, after detecting " chatoyancy " target, to its automatic identification, and show that at display module red alert box is with target label.At this moment, tracking cross is placed in the alert box, trigger " chatoyancy " target detection module and send the range finding trigger pip to range finder module, after range finder module receives the range finding trigger pip of " chatoyancy " target detection module, begin " chatoyancy " target is carried out automatic range, and distance value is sent into " chatoyancy " target detection module, adopt the character stacked system that distance value is superimposed upon in the video, shown by display module, thereby realize little target automatic range.
Because target is very little, the range finding laser echo signal is very weak, therefore adopting wavelength is semiconductor laser and the high sensitivity avalanche photodide of 1550nm, by repeatedly launch laser pulse, receive repeatedly return laser beam, signal integration and correlation technique handle, the weak echo signal is amplified, thereby realize little target range finding.
Just can see the optics with " chatoyancy " by above method and to take aim at equipment and optoelectronic device carries out automatic range, solve very little because of " chatoyancy " target size, be difficult to aiming, thereby can't accurately record the problem of the distance value of " chatoyancy " target.
Advantage of the present invention be " chatoyancy " target detection module detect and identify the optics with " chatoyancy " see take aim at equipment and optoelectronic device after, the control range finder module is found range to target, thereby realize " chatoyancy " target automatic range, solve because of " chatoyancy " target size problem very little, that be difficult to aim at when it is found range, and can be round the clock to " chatoyancy " target identification back automatic range.
Claims (1)
1. " chatoyancy " target automatic range method, this method may further comprise the steps:
1) at first adopts " chatoyancy " target detection module that the optics with " chatoyancy " is seen and take aim at equipment and optoelectronic device is surveyed;
2) in " chatoyancy " target detection module, employing character stacked system is superimposed upon tracking cross in the video and the tracking cross center is overlapped with three tunnel system optical axis, is shown by display module; 3) when 1) detect " chatoyancy " target after, to its automatic identification, and showing red alert box with target label at display module, place tracking cross in the alert box this moment, triggers " chatoyancy " target detection module and send the range finding trigger pip to range finder module;
4) after range finder module receives the range finding trigger pip of " chatoyancy " target detection module, begin " chatoyancy " target is carried out automatic range, and distance value sent into " chatoyancy " target detection module, adopt the character stacked system that distance value is superimposed upon in the video, shown by display module.
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| CN2013101832392A CN103308029A (en) | 2013-05-17 | 2013-05-17 | Automatic cat eye effect target distance measurement method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104032657A (en) * | 2014-05-29 | 2014-09-10 | 交通运输部公路科学研究所 | Calibrating method and device for laser road surface construction depth instrument |
| CN111381241A (en) * | 2020-03-31 | 2020-07-07 | 深圳市银星智能科技股份有限公司 | Laser radar and cleaning robot |
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| CN104032657A (en) * | 2014-05-29 | 2014-09-10 | 交通运输部公路科学研究所 | Calibrating method and device for laser road surface construction depth instrument |
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| CN111381241A (en) * | 2020-03-31 | 2020-07-07 | 深圳市银星智能科技股份有限公司 | Laser radar and cleaning robot |
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Application publication date: 20130918 |