DEVICE FOR DETECTION OF OPTOELECTRONIC OBJECTS

Abstract: The present invention relates to automation and computer engineering and it can be used as indicator for detection of optoelectronic objects when ingressing within a visibility thereof. The technical result of the applied invention is detection of optoelectronic objects with their subsequent image at the monitor. The technical result of the present invention, which contains frequency impulse laser with objective and photoreceiving unit with objective, is achieved by the fact of additional incorporation and true connection of electrooptical transducer EOT, picture monitor, videosignal processing unit (VPU), the 1st and the 2nd high voltage impulse sources, block of lock impulses BLI, remote control, frame frequency divider, modulator, AGC. As a result, picture monitor shows all detected objects, the focal plane of them is aligned with optical system of the applied device for detection.

Description: DEVICE FOR DETECTION OF OPTOELECTRONIC OBJECTS BACKGROUND OF THE INVENTION I. FIELD OF INVENTION The present invention relates generally to automation and computer engineering and it can be used as indicator for detection of optoelectronic objects when ingressing within a visibility thereof. II. DESCRIPTION OF THE PRIOR ART The closest prior art has been described in an active impulse device for night viewing ("Devices for observation at night and upon poor visibility" by Orlov V. and Petrov V., published by "Voennoe isdatelstvo", 1989, Moscow, p.116, fig.56), comprising frequency impulse laser photoreceiving unit with PRU objective. That system enables detection of optoelectronic objects. Major drawbacks associated with the prior art device reside in a limited noise immunity and impossibility of automation of the detection process. SUMMARY OF THE INVENTION It is an object of the present invention to expand the functional possibilities of the device, to increase noise immunity and automation of detection of the optoelectronic objects. This can be achieved in accordance with the present invention, which contains frequency impulse laser with objective and photoreceiving unit 4 with objective (TV camera), by additional incorporation to the device for detection of the optoelectronic objects of electrooptical transducer (EOT) 3, the first input of which is optically connected with the objective outlet 2, its outlet is connected with the first input of photoreceiving * unit (PRU) with objective 4, picture monitor (PM) 5, the input of which is connected with the PRU outlet 4, videosignal processing unit (VPU) 6, the first input of which is also connected with the PRU outlet 4, synchronizer 10, the first input of which is connected with the outlet PRU 4 and its second outlet is connected with the second input of VPU 6, the 1st and the 2nd high voltage impulse sources 8, 9, their inputs are connected with the first outlet of the synchronizer 10, and the outlet of the 1st impulse source is connected with the third input of EOT 3, block of lock impulses (BLI) 7, the first input of which is connected with the outlet of the 2nd impulse source 9, its second input is connected with the third outlet of synchronizer 10, and its outlet is connected with the second input of EOT 3, remote control 14, the outlet of which is connected with the second input of the synchronizer 3, frame frequency divider 13, the input of which is connected with the fourth outlet of synchronizer 10, and its first outlet is connected with the third input of BLI 6, modulator 12, the first input of which is connected with the second outlet of frame frequency divider 13, the second input is connected with the fifth outlet of synchronizer 10, and the outlet is connected with the input of frequency impulse laser 11, the AGC (automatic grain control) scheme 15, the input of which is connected with the outlet of PRU 4, and the 1st, the 2nd and the 3rd outlets are connected accordingly with the objective input 2, with the fourth input of EOT 3 and the second input of PRU 4. BRIEF DESCRIPTION OF THE DRAWINGS Other advantages and features of the present invention will be described in greater detail with reference to an exemplary embodiment, which is intended to explain and not to limit the invention, and is illustrated in a drawing in which: FIGURE 1 shows a preferred embodiment in accordance with the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in FIGURE 1, the present invention comprises an object for detection (1), objective (2), electrooptical transducer EOT (3), photoreceiving unit PRU with objective (4), picture monitor PM (5), videosignal processing unit VPU (6), block of lock impulses BLI (7), high voltage impulse sources (8, 9), synchronizer (10), frequency impulse laser (11), modulator (12), frame frequency divider (13), remote control (14), AGC (automatic grain control) scheme (15). The present device operates as follows. FIGURE 1 shows structure scheme of the device. The determined space volume where an object for detection takes place (1), is illuminated by laser impulse radiation (11) with repetition frequency f| /n (fi - line frequency of signal transformation by TV method; n - integral number) and modulated by the frequency f f /m (f f - frame frequency of signal transformation by TV method; m - integral number). The laser radiation (11), reflected from object (1) and other object in the determined volume is received by the input objective (2), which forms the image of projection of the determined space volume on the input photocathode of EOT (3). The image signals, amplified by EOT (3), are projected at the photosensitive element of photoreceiving unit 4. The videosignals of the PRU 4 output are receiving by picture monitor (5), videosignal processing unit (6), synchronizer (10) and AGS scheme (15). Synchronizer (10) provides sychronous operation of high voltage impulse sources (8, 9), forming of the synchropulses, which control modulator (12) and accordingly laser (11), and also forming of sychropulses controlling block of lock impulses (7). The reflected on the electrooptical transducer signal is amplified only within the time interval, characterized by the duration of lock impulses τ 3 , that is in accordance with the depth of instantly viewed space C τ 3 Δ R = , C - velocity of light 2 The change of the delay of lock impulses relatively laser radiation impulses determines the distance where the signals, reflected from objects, are received. Changing mutual position of lock impulses and laser radiation impulses from remote control (14), the subsequent view of the determined space of ΔR discrete depth can be provided. The impulses subsequence modulation of a transmitter with the frequency f f /m « 3...5 Hz with the help of signals, received from the frame frequency divider (13), ensures defined image of the reflected laser signal at the interference background made by headlights of a car, illuminated lamps, windows of appartments etc. In this case the indication of useful signal is its frequency f f /m cophased with the videosignal frame frequency. Due to these indications, operator emphasizes the signals of the optical devices (checking amplitude and repetition frequency) at the picture monitor (5); videosignal autoprocessing unit (6) will form the alarm signal owing to these signs. By means of . diaphragms control of objectives (2, 4) and amplifying of electrooptical transducer (3), the AGS scheme provides supporting of optimal signal level at the input of photoreceiving unit (4) upon change of the signal level at the input objective pupil (2). Although the present invention has been described with reference to the preferred inbodiment, the invention is not limited to the details thereof, and various changes and modifications obvious to one skilled in the art to which the invention pertains are deemed to be within the spirit, scope and contemplation of the invention as further defined in the appended claims.

Claims: WHAT IS CLAIMED IS: A device for detection of optoelectronic objects, comprising frequency impulse laser and photoreceiving unit with objective, differing from the prior art by incorporation of electrooptical transducer EOT, the first input of which is optically connected with the objective outlet, its outlet is connected with the first input of photoreceiving unit (PRU) with objective, picture monitor (PM), the input of which is connected with the PRU outlet, videosignal processing unit (VPU), the first input of which is also connected with the PRU outlet, synchronizer, the first input of which is connected with the outlet PRU and its second outlet is connected with the second input of VPU, the 1st and the 2nd high voltage impulse sources, their inputs are connected with the first outlet of the synchronizer, and the outlet of the 1st impulse source is connected with the third input of EOT, block of lock impulses (BLI), tne first input of which is connected with the outlet of the 2nd impulse source, its second input is connected with the third outlet of synchronizer, and its outlet is connected with the second input of EOT, remote control, the outlet of which is connected with the second input of the synchronizer, frame frequency divider, the input of which is connected with the fourth outlet of synchronizer, and its first outlet is connected with the third input of BLI, modulator, the first input of which is connected with the second outlet of frame frequency divider, the second input is connected with the fifth outlet of synchronizer, and the outlet is connected with the input of frequency impulse laser, the AGC (automatic grain control) scheme, the input of which is connected with the outlet of PRU, and the 1st, the 2nd and the 3rd outlets are connected accordingly with the objective input, with the fourth input of EOT and the second input of PRU.

Inventors: IGUMNOV SVJATOSLAV FEDOROVICH, KAZAKOV ALEXANDR SERGEEVICH, KRIMSKI MICHAIL ILICH, MIKHAILENKO SERGEI ANATOLIEVIC, PODJUEV VIKTOR ALEXEEVICH, SLIPCHENKO NIKOLAI NIKOLAEVICH, IGUMNOV, SVJATOSLAV FEDOROVICH, KAZAKOV, ALEXANDR SERGEEVICH, KRIMSKI, MICHAIL ILICH, MIKHAILENKO, SERGEI ANATOLIEVICH, PODJUEV, VIKTOR ALEXEEVICH, SLIPCHENKO, NIKOLAI NIKOLAEVICH
Applicants: IGUMNOV SVJATOSLAV FEDOROVICH, KAZAKOV ALEXANDR SERGEEVICH, KRIMSKI MICHAIL ILICH, MIKHAILENKO SERGEI ANATOLIEVIC, PODJUEV VIKTOR ALEXEEVICH, SLIPCHENKO NIKOLAI NIKOLAEVICH, IGUMNOV, SVJATOSLAV FEDOROVICH, KAZAKOV, ALEXANDR SERGEEVICH, KRIMSKI, MICHAIL ILICH, MIKHAILENKO, SERGEI ANATOLIEVICH, PODJUEV, VIKTOR ALEXEEVICH, SLIPCHENKO, NIKOLAI NIKOLAEVICH
Application year: 1999
Main classification: G02B
IPC codes: G01S17