WO2016153395A1 - Active pulsed television device - Google Patents
Active pulsed television device Download PDFInfo
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- WO2016153395A1 WO2016153395A1 PCT/RU2016/000159 RU2016000159W WO2016153395A1 WO 2016153395 A1 WO2016153395 A1 WO 2016153395A1 RU 2016000159 W RU2016000159 W RU 2016000159W WO 2016153395 A1 WO2016153395 A1 WO 2016153395A1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/51—Housings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
Definitions
- the invention relates to dust-impermeable optoelectronic technology and can be used to observe objects at a low level of their lighting (in the presence of rain and fog, during snowfall, under water, etc.).
- An active-pulsed television device consisting of a surveillance unit comprising sequentially mounted and optically conjugated receiving lenses, an electron-optical converter (EOC), transfer optics transmitting a television camera connected to a video monitor, and a pulsed illumination unit containing I and optically coupled forming lenses and a laser emitter connected by a control input to a gate control device through a I a synchronizer connected by the first output to the control unit input, the second output to the control input E01 1 through the shutter control device, a narrow-band optical filter installed between the receiving lens and the image intensifier tube is introduced into the monitoring unit, and a reference pulse sensor is included in the pulse illumination unit, optically coupled to the laser emitter and the forming lens, in addition, a range measuring unit containing optically coupled receiving lens and photodetector is introduced into the device the output of which is connected to a threshold device, the output of a threshold device is connected to the first input of the time interval meter, the output of which is connected to
- This device is designed to observe objects at a low level of natural light and solves the problem of increasing the noise immunity and operability of the device from external background noise in the presence of bright radiation sources in the field of view.
- the disadvantage of this device is the fact that the use of a laser radiation source does not allow to obtain a color image of the observed object.
- an active-pulse television device designed to detect and monitor objects in limited visibility conditions, including in the presence of rain, snowfall, smoke, during a dust storm.
- the device contains a laser optical emitter, a transmitting lens, a narrow-band transmitting optical filter, a receiving lens, an electron-optical converter, a matching lens, a television camera (TC), a monitor, a gate pulse generator, a control unit, a TC shutter driver, a recording pulse generator, RU 2406100 C2, publ. 10.12.201 0.
- This technical solution is aimed at increasing the resolution and sensitivity of the device.
- the elements of the device are placed in a sealed enclosure containing protective glass.
- part of the luminous flux from the optical emitter is reflected from the glass surfaces and enters the camera lens (interference) along with the CBCTOBoiO part of the flux reflected from the observed object (useful luminous flux).
- the image quality of the object is significantly deteriorated due to the appearance of false contours and a decrease in contrast.
- the present invention is to improve the image quality of the observed object.
- an active-pulse television device including a housing, one of the walls of which is made with the possibility of transmitting light in which the television camera is located with the possibility of connecting it to a video monitor, and the source of pulsed illumination, to which the control unit for the source of pulsed illumination is connected, further comprises a block for selecting television signals for field synchronization, the input of which is connected to the output of the television camera, and the input of the control unit of the source of pulsed illumination, which is made in the form of one or more eustodiodes.
- FIG. 1 is a schematic sectional view of a device; in FIG. graphs showing the relationship in time between the change in the sensitivity R of the television camera and the intensity
- the active-pulse device includes a sealed case 1, one of the walls of which is equipped with a protective glass 2.
- a television camera 3 with the possibility of connecting it to the video monitor through connector 4.
- a source 5 of pulse illumination is made, made in a specific example in the form powerful LED type MCE4WT.
- the source control unit 5 is connected to the source 5 of the pulse illumination 5.
- a unit 7 for selecting the television signals for field synchronization made in a specific example based on the EP4CE 1 1 5F29C7N microcircuit.
- the input of block 7 is connected to the output of the television camera 3, and the output to the input of block 6 of the control source 5 of the pulse illumination.
- the device operates as follows.
- the control unit 6 of the source 5 of pulsed illumination generates a pulsed light flux directed at the observed object 8 through a protective glass 2.
- Part 9 of the light flux is reflected from the surfaces of the glass 2 and enters the lens of the television camera 3.
- Another part 10 of the light guide about the flux is reflected from the object 8 and passing through glass 2 also hits the lens television camera 3.
- television camera 3 mainly perceives part 1 0 of the light flux reflected from object 8. This occurs at intervals 1 1 of the operating time of television camera 3.
- the position of the light pulses in time reflects the dependence of the intensity I of the light flux on time, which is determined by the control unit 6 of the source 5 of the pulse illumination.
- Block 7 of the selection of television field signal signals extracts from the full signal at the output of the television camera 3 field synchronization pulses that coincide but with the frequency with intervals 1 2 of the insensitivity of the television camera 3.
- the signals allocated by block 7 are fed to block 6, which controls the pulse illumination source 5 in such a way that part 9 of the light flux enters the lens of the television camera 3 at an interval of 12 times its zero sensitivity, and part 10 of the light flux enters the lens of the television camera 3 in the inter al January 1st time lo normal sensitivity.
- the television camera perceives mainly the light flux reflected from the object 8.
- the result is a technical result consisting in preventing the appearance of false contours and in increasing the contrast of the image by eliminating the influence of reflections from surfaces of protective glass.
- the image quality is significantly improved.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Studio Devices (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Лктишю-импульсный телевизионный прибор Lctishu Pulse Television
Область техники Technical field
Изобретение относится к пыле-влагонепропицаемой оптико- электронной технике и может быть использовано для наблюдения объектов при пониженном уровне их освещения (при наличии дождя и тумана, во время снегопада, под водой и т.п.). The invention relates to dust-impermeable optoelectronic technology and can be used to observe objects at a low level of their lighting (in the presence of rain and fog, during snowfall, under water, etc.).
Предшествующий уровень техники Известен активно-импульсный телевизионный прибор, состоящий из блока наблюдения, содержащего последовательно установленные и оптически сопряженные приемный объектив, электронно-оптический преобразователь (ЭОП), оптику переноса, передающую телевизионную камеру, подключенную к видеомонитору, блока импульсного подсвета, содержащего блок у п равлен и я и оптически сопряженные формирующий объекти в и лазерный излучатель, соединенный управляющим входом с устройством управления затвором через блок управления и синхронизатор, подключенный первым выходом к входу блока управления, вторым выходом - к управляющему входу Э01 1 через устройство управления затвором, в состав блока наблюдения введен узкополосный оптический фильтр, установленный между приемным объективом и ЭОП, а в состав блока импульсного подсвета введен датчик опорных импульсов, оптически связанный с лазерным излучателем и формирующим объективом, кроме того, в состав прибора введен блок измерения дальности, содержащий оптически сопряженные приемный объектив и фотоприемное устройство, выход которого подключен к пороговому устройству, выход порогового устройства соединен с первым входом измерителя временных интервалов, выход которого подключен к первому входу синхронизатора, а второй вход - к выходу датчика опорных импульсов, выход датчика опорных импульсов подключен ко второму входу синхронизатора, а первый выход синхронизатора дополнительно соединен с управляющим входом формирующего объектива, RU 57472 U 1 , опубл. 1 0. 1 0.2006. BACKGROUND OF THE INVENTION An active-pulsed television device is known, consisting of a surveillance unit comprising sequentially mounted and optically conjugated receiving lenses, an electron-optical converter (EOC), transfer optics transmitting a television camera connected to a video monitor, and a pulsed illumination unit containing I and optically coupled forming lenses and a laser emitter connected by a control input to a gate control device through a I a synchronizer connected by the first output to the control unit input, the second output to the control input E01 1 through the shutter control device, a narrow-band optical filter installed between the receiving lens and the image intensifier tube is introduced into the monitoring unit, and a reference pulse sensor is included in the pulse illumination unit, optically coupled to the laser emitter and the forming lens, in addition, a range measuring unit containing optically coupled receiving lens and photodetector is introduced into the device the output of which is connected to a threshold device, the output of a threshold device is connected to the first input of the time interval meter, the output of which is connected to the first input of the synchronizer, and the second input to the output of the reference pulse sensor, the output of the reference pulse sensor is connected to the second input of the synchronizer, and the first output synchronizer is additionally connected to the control input of the forming lens, RU 57472 U 1, publ. 1 0. 1 0.2006.
Данный прибор предназначен для наблюдения объектов при пониженном уровне естественной освещенности и решает задачу повышения помехозащищенности и работоспособности прибора от внешних фоновых помех при наличии в поле зрения ярких источников излучения. This device is designed to observe objects at a low level of natural light and solves the problem of increasing the noise immunity and operability of the device from external background noise in the presence of bright radiation sources in the field of view.
Недостатком данного прибора является то обстоятельство, что использование лазерного источника излучения не позволяет получить цветное изображение наблюдаемого объекта. The disadvantage of this device is the fact that the use of a laser radiation source does not allow to obtain a color image of the observed object.
Известен также активно-импульсный телевизионный прибор, предназначенный для обнаружения и наблюдения объектов в условиях ограниченной видимости, в том числе, при наличии дождя, снегопада, дыма, во время пылевой бури. Прибор содержит лазерный оптический излучатель, передающий объектив, узкополосный пропускающий оптический фильтр, приемный объектив, электронно-оптический преобразователь, согласующий объектив, телевизионную камеру (ТК), монитор, формирователь стробирующих импульсов, блок управления, формирователь импульсов управления затвором ТК, формирователь импульсов записи, RU 2406100 С2, опубл. 10. 12.201 0. Also known is an active-pulse television device designed to detect and monitor objects in limited visibility conditions, including in the presence of rain, snowfall, smoke, during a dust storm. The device contains a laser optical emitter, a transmitting lens, a narrow-band transmitting optical filter, a receiving lens, an electron-optical converter, a matching lens, a television camera (TC), a monitor, a gate pulse generator, a control unit, a TC shutter driver, a recording pulse generator, RU 2406100 C2, publ. 10.12.201 0.
Данное техническое решение направлено на повышение разрешающей способности и чувствительности прибора. Для работы в указанных выше условиях (снег, дождь, пыльная буря и т.п.) элементы прибора размещаются в герметичном корпусе, содержащем защитное стекло. Однако часть светового потока от оп тического излучателя отражается от поверхностей стекла и попадает в объектив телекамеры (помеха) наряду с частью CBCTOBoiO потока, отраженной от наблюдаемого объекта (полезный световой поток). В результате существенно ухудшается качество изображения объекта из-за появления ложных контуров и снижения контрастности. This technical solution is aimed at increasing the resolution and sensitivity of the device. To work in the above conditions (snow, rain, dust storm, etc.), the elements of the device are placed in a sealed enclosure containing protective glass. However, part of the luminous flux from the optical emitter is reflected from the glass surfaces and enters the camera lens (interference) along with the CBCTOBoiO part of the flux reflected from the observed object (useful luminous flux). As a result, the image quality of the object is significantly deteriorated due to the appearance of false contours and a decrease in contrast.
Раскрытие изобретения Disclosure of invention
Задачей настоящего изобретения является повышение качества изображения наблюдаемого объекта. The present invention is to improve the image quality of the observed object.
Согласно изобретению активно-импульсный телевизионный прибор, включающий корпус, одна из стенок которого выполнена с возможностью пропускания света, в котором размещена телевизионная камера с возможностью ее подключения к видеомонитору, и источник импульсного подсвета, к которому подключен блок управления источником импульсного подсвета, дополнительно содержит блок селекции телевизионных сигналов полевой синхронизации, вход которого соединен с выходом телевизионной камеры, а выход со входом блока управления источником импульсного подсвета, который выполнен в виде одного или более евстодиодов. According to the invention, an active-pulse television device including a housing, one of the walls of which is made with the possibility of transmitting light in which the television camera is located with the possibility of connecting it to a video monitor, and the source of pulsed illumination, to which the control unit for the source of pulsed illumination is connected, further comprises a block for selecting television signals for field synchronization, the input of which is connected to the output of the television camera, and the input of the control unit of the source of pulsed illumination, which is made in the form of one or more eustodiodes.
Заявителем не выявлены какие-либо технические решения, идентичные заявленному, что позволяет сделать вывод о соответствии изобретения условию патентоспособности «Новизна» («N»). The applicant has not identified any technical solutions identical to the claimed one, which allows us to conclude that the invention meets the condition of patentability “Novelty” (“N”).
Заявителем не выявлены источники информации, в которых содержались бы сведения о влиянии отличительных признаков изобретения на достигаемый технический результат. The applicant has not identified sources of information that would contain information about the influence of the distinguishing features of the invention on the achieved technical result.
Указанные обстоятельства позволяют сделать вывод о соответствии заявленного технического решения условию патентоспособности «Изобретательский уровень» («IS»). These circumstances allow us to conclude that the claimed technical solution meets the patentability condition “Inventive step” (“IS”).
Краткое описание чертежей Brief Description of the Drawings
В дальнейшем сущность изобретения поясняется подробным описанием примеров его осуществления со ссылками на чертежи, на которых представлены: In the future, the invention is illustrated by a detailed description of examples of its implementation with reference to the drawings, which show:
на фиг. 1 - схематическое изображение устройства в разрезе; на фиг. графики, отображающие связь во времени между изменением чувствительности R телевизионной камеры и интенсивностьюin FIG. 1 is a schematic sectional view of a device; in FIG. graphs showing the relationship in time between the change in the sensitivity R of the television camera and the intensity
I помехи и полезного светового потока; на фиг.З фрагмент Л на фиг. 2. I interference and useful luminous flux; in FIG. 3, fragment L in FIG. 2.
Лучший вариант осуществления изобретения The best embodiment of the invention
Активно-импульсный прибор включает герметичный корпус 1 , одна из стенок которого снабжена защитным стеклом 2. В корпусе 1 размещена телевизионная камера 3 с возможностью ее подключения к видеомонитору через разъем 4. В корпусе 1 установлен источник 5 импульсного подсвета, выполненный в конкретном примере в виде мощного светодиода типа MCE4WT. К источнику 5 импульсного подсвета подключен блок 6 управления источником 5. В корпусе 1 размещен блок 7 селекции телевизионных сигналов полевой синхронизации, выполненный в конкретном примере на базе микросхемы ЕР4СЕ 1 1 5F29C7N. Вход блока 7 соединен с выходом телевизионной камеры 3, а выход со входом блока 6 управления источником 5 импульсного подсвета. The active-pulse device includes a sealed case 1, one of the walls of which is equipped with a protective glass 2. In the case 1 there is a television camera 3 with the possibility of connecting it to the video monitor through connector 4. In the case 1, a source 5 of pulse illumination is made, made in a specific example in the form powerful LED type MCE4WT. The source control unit 5 is connected to the source 5 of the pulse illumination 5. In the case 1, there is a unit 7 for selecting the television signals for field synchronization, made in a specific example based on the EP4CE 1 1 5F29C7N microcircuit. The input of block 7 is connected to the output of the television camera 3, and the output to the input of block 6 of the control source 5 of the pulse illumination.
Устройство работает следующим образом. Блок 6 управления источником 5 импульсного подсвета формирует импульсный световой поток, направленный на наблюдаемый объект 8 через защитное стекло 2. Часть 9 светового потока отражается от поверхностей стекла 2 и попадает в объектив телевизионной камеры 3. Другая часть 10 световог о потока отражается от объекта 8 и, пройдя через стекло 2, также попадает в объектив телевизионной камеры 3. В процессе работы телевизионная камера 3, в основном, воспринимает часть 1 0 светового потока, о траженную от объекта 8. Это происходит в интервалы 1 1 времени работы телевизионной камеры 3. Однако существуют интервалы 1 2 времени, когда чувствительность телевизионной камеры равна нулю. Эти интервалы повторяются с частотой телевизионных нолей и связаны с переносом зарядов в ПЗС-матрицс. Положение световых импульсов во времени, показанное на нижнем графике на фиг. 2 и 3, отражает зависимость интенсивности I светового потока от времени, которая определяется блоком 6 управления источником 5 импульсного подсвета. Блок 7 селекции телевизионных сигналов полевой сигнализации выделяет из полного сигнала на выходе телевизионной камеры 3 импульсы полевой синхронизации, совпадающие но частоте с интервалами 1 2 нечувствительности телевизионной камеры 3. Выделенные блоком 7 сигналы поступают в блок 6, управляющий источником 5 импульсного подсвета таким образом, что часть 9 светового потока попадает в объектив телевизионной камеры 3 в интервал 12 времени нулевой ее чувствительности, а часть 10 светового потока попадает в объектив телевизионной камеры 3 в интервал 1 1 времени се нормальной чувствительности. The device operates as follows. The control unit 6 of the source 5 of pulsed illumination generates a pulsed light flux directed at the observed object 8 through a protective glass 2. Part 9 of the light flux is reflected from the surfaces of the glass 2 and enters the lens of the television camera 3. Another part 10 of the light guide about the flux is reflected from the object 8 and passing through glass 2 also hits the lens television camera 3. During operation, television camera 3 mainly perceives part 1 0 of the light flux reflected from object 8. This occurs at intervals 1 1 of the operating time of television camera 3. However, there are intervals 1 2 times when the sensitivity of the television camera equals zero. These intervals are repeated with the frequency of television zeros and are associated with charge transfer to the CCD matrices. The position of the light pulses in time, shown in the lower graph in FIG. 2 and 3, reflects the dependence of the intensity I of the light flux on time, which is determined by the control unit 6 of the source 5 of the pulse illumination. Block 7 of the selection of television field signal signals extracts from the full signal at the output of the television camera 3 field synchronization pulses that coincide but with the frequency with intervals 1 2 of the insensitivity of the television camera 3. The signals allocated by block 7 are fed to block 6, which controls the pulse illumination source 5 in such a way that part 9 of the light flux enters the lens of the television camera 3 at an interval of 12 times its zero sensitivity, and part 10 of the light flux enters the lens of the television camera 3 in the inter al January 1st time lo normal sensitivity.
Таким образом телевизионная камера воспринимает, главным образом, световой поток, отраженный от объекта 8. Thus, the television camera perceives mainly the light flux reflected from the object 8.
В результате достигается технический результат, состоящий в предотвращении появления ложных контуров и в увеличении контрастности изображения за счет устранения влияния отражений от поверхностей защитного стекла. Таким образом существенно повышается качество изображения. ΐ 1ромышленная применимость The result is a technical result consisting in preventing the appearance of false contours and in increasing the contrast of the image by eliminating the influence of reflections from surfaces of protective glass. Thus, the image quality is significantly improved. ΐ 1 industrial applicability
Опытный образен прибора изготовлен и испытан ООО «Авиаинформатика», Санкт-Петербург, что позволяет сделать вывод о соответствии заявленного технического решения условию патентоспособности «Промышленная применимость» («ΙΛ»). A prototype device was manufactured and tested by Aviainformatics LLC, St. Petersburg, which allows us to conclude that the claimed technical solution meets the patentability condition “Industrial Applicability” (“ΙΛ”).
Claims
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2015110227 | 2015-03-23 | ||
| RU2015110227/28A RU2589772C1 (en) | 2015-03-23 | 2015-03-23 | Active-pulsed television device |
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| WO2016153395A1 true WO2016153395A1 (en) | 2016-09-29 |
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2016
- 2016-03-23 WO PCT/RU2016/000159 patent/WO2016153395A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6529640B1 (en) * | 1998-06-09 | 2003-03-04 | Nikon Corporation | Image processing apparatus |
| US8073321B2 (en) * | 2005-07-29 | 2011-12-06 | Cisco Technology, Inc. | Controlling an exposure time for digital cameras |
| RU2406100C2 (en) * | 2008-12-29 | 2010-12-10 | ГОУ ВПО Томский государственный университет систем управления и радиоэлектроники (ТУСУР) | Active pulse tv system |
| US20110279681A1 (en) * | 2010-01-27 | 2011-11-17 | Ci Systems Ltd. | Room-temperature filtering for passive infrared imaging |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2589772C1 (en) | 2016-07-10 |
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