CN108254998B - Refrigeration camera with prevent condensation function and can calculate dew point temperature - Google Patents
Refrigeration camera with prevent condensation function and can calculate dew point temperature Download PDFInfo
- Publication number
- CN108254998B CN108254998B CN201810105214.3A CN201810105214A CN108254998B CN 108254998 B CN108254998 B CN 108254998B CN 201810105214 A CN201810105214 A CN 201810105214A CN 108254998 B CN108254998 B CN 108254998B
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- China
- Prior art keywords
- camera
- inner cavity
- cavity shell
- heating assembly
- refrigeration
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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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/55—Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
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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
- G03B11/00—Filters or other obturators specially adapted for photographic purposes
Abstract
The invention provides a refrigeration camera with an anti-condensation function, which comprises a camera inner cavity shell and filter glass positioned in the camera inner cavity shell. The temperature of the filter glass is increased by electrifying and heating the heating assembly, the dewing caused by the fact that the temperature on the filter glass is lower than the dew point temperature is prevented, and the adaptability of the refrigeration camera to the environment temperature and the humidity is improved.
Description
The present application is filed in divisional manner as a parent application of an invention patent entitled "refrigeration camera with anti-condensation function" with an application date of 2015, 12/10 and an application number of 201510908821. X.
Technical Field
The invention relates to the field of scientific research cameras, in particular to a refrigeration camera with a condensation prevention function.
Background
Scientific research camera has high SNR, small advantage, and refrigeration camera just belongs to one of them. The camera generates heat in the running process, so that noise occurs, the imaging effect of the whole machine vision is finally influenced, and the refrigeration camera with low noise, high sensitivity, high resolution and wide dynamic range is generated in order to improve the imaging quality of the camera. In order to improve the sensitivity of a refrigeration camera and reduce the influence of noise on imaging quality, the method adopted at present is to refrigerate a photosensitive chip, sometimes the refrigerating temperature of the photosensitive chip even reaches below minus 80 ℃, so that a problem occurs, and the photosensitive chip with deep refrigeration can absorb radiant heat from the periphery, so that the temperature of peripheral structural components of the photosensitive chip, such as an inner cavity shell and filter glass, is reduced. In addition, water vapor in the air can be condensed on the mirror surface under conditions in which the dew point temperature is 23.2 ℃ when the indoor temperature is 25 ℃ and the relative humidity is 90%. That is, under the conditions that the indoor temperature is 25 ℃ and the relative humidity is 90%, if the temperature of the filter glass of the refrigeration camera is lower than 23.2 ℃, the dew condensation phenomenon occurs on the filter glass. For a refrigeration camera, the filter glass temperature is easily below 23.2 ℃ at an indoor temperature of 25 ℃. At present, many camera manufacturers use a method of limiting the environment in which the camera is used, for example, limiting the working environment of the camera to be below 20 ℃ and the relative humidity to be below 70 ℃, which causes inconvenience to users.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the refrigeration camera with the condensation preventing function is wide in application range of environmental temperature and humidity.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a refrigeration camera with prevent condensation function, includes camera inner chamber casing, is located the filter glass of camera inner chamber casing, still includes heating element, heating element fixes on camera inner chamber casing, heating element is used for heating filter glass.
The invention has the beneficial effects that: set up heating element in camera inner chamber casing, improve filter glass's temperature through heating element's generating heat to prevent that filter glass's temperature is less than dew point temperature, increase the adaptability of refrigeration camera to ambient temperature and humidity.
Drawings
Fig. 1 is an exploded view of a refrigeration camera with an anti-condensation function according to an embodiment of the present invention;
FIG. 2 is an exploded view of a heating assembly according to an embodiment of the present invention;
fig. 3 is a sectional view of a refrigeration camera with an anti-condensation function according to an embodiment of the present invention.
Description of reference numerals:
1. a camera inner cavity housing; 2. a filter glass; 3. a heating assembly; 4. a fixing ring; 5. a first temperature sensor; 6. a photosensitive chip; 7. a chip circuit board;
11. a flange; 12. threading holes;
31. a resistance wire; 32. a protective film; 33. and (6) leading out wires.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: the refrigerating camera is additionally provided with a heating component, and the heat generated by the heating component is transferred to the filter glass, so that the dewing caused by the fact that the temperature of the filter glass is lower than the dew point temperature is prevented.
Referring to fig. 1 to 3, the present invention provides a refrigeration camera with an anti-condensation function, including a camera inner cavity housing 1, a filter glass 2 located in the camera inner cavity housing 1, and a heating assembly 3, wherein the heating assembly 3 is fixed on the camera inner cavity housing 1, and the heating assembly 3 is used for heating the filter glass 2.
Further, the heating component 3 comprises a resistance wire 31 and two protective films 32, the resistance wire 31 is positioned in an interlayer of the two protective films 32 which are arranged in parallel, a flange 11 matched with the heating component 3 is arranged on an inner ring of the camera inner cavity shell 1, and the heating component 3 is attached to the flange 11.
As can be seen from the above description, the resistance wire 31 is clamped and protected by the two protective films 32, so that the resistance wire 31 is effectively shaped, the heating assembly 3 is attached to the flange 11 on the camera inner cavity shell 1, the resistance wire 31 is convenient to mount and use, and meanwhile, the contact area between the heating assembly 3 and the camera inner cavity shell 1 is increased, and the heating efficiency is improved.
Further, the heating assembly 3 further comprises two outgoing lines 33, the two outgoing lines 33 are respectively connected with two ends of the resistance wire 31, two threading holes 12 are formed in the root of the flange 11, the threading holes 12 are led to the outer side face of the camera inner cavity shell 1 from the root of the flange 11, and the threading holes 12 are matched with the outgoing lines 33 in shape.
As can be seen from the above description, the two ends of the resistance wire 31 of the heating assembly 3 are respectively connected with an outgoing wire 33, so that the connection between the heating assembly 3 and other circuits is facilitated, and the operation is convenient; the root of the flange 11 is provided with a threading hole 12, the threading hole 12 leads to the outer side surface of the camera inner cavity shell 1 from the root of the flange 11, the trend of the outgoing line 33 does not influence other structures of the camera, the structure is reasonable, and the operation is convenient; through wires hole 12 and 33 shape adaptations of lead-out wire, compact structure is reasonable, makes things convenient for the installation of lead-out wire 33, prevents simultaneously that lead-out wire 33 from deviating from in through wires hole 12, prevents to influence the camera and shoots the sight.
Further, the surface of the flange 11, which is attached to the heating element 3, is a conical surface.
As can be seen from the above description, the surface of the flange 11 of the camera cavity housing 1, which is attached to the heating element 3, is a tapered surface, which can ensure the contact area between the heating element 3 and the flange 11, and reduce the processing requirement for the flange 11.
Further, the material of the protective film 32 is a PET film.
As can be seen from the above description, the material of the protective film 32 is a PET film, which has the advantages of high temperature resistance, good dimensional stability and long service life.
Further, the resistance wire 31 is a constantan resistance wire, the resistance wire 31 is wound into a plurality of shapes, and the lead wire 33 is riveted with the end of the resistance wire 31.
As can be seen from the above description, the constantan resistance wire has the advantages of small temperature coefficient and small resistance coefficient, so that the heating component 3 has stable performance and low power consumption; the resistance wires 31 are wound into a plurality of shapes which are uniformly arranged, so that the length of the resistance wires 31 in unit length can be increased, namely the area of the resistance wires 31 is increased, and the heating efficiency and the uniformity of the heating component 3 are improved; the lead wire 33 is riveted with the end of the resistance wire 31, and has the advantage of stable structure.
Further, still include solid fixed ring 4, gu fixed ring 4's medial surface with heating element 3 laminates, gu fixed ring 4 passes through the fix with screw on camera inner chamber casing 1.
It can be known from the above description that the heating component 3 is closely attached to the flange 11 of the camera inner cavity shell 1 through the fixing ring 4 and the screw, and the heat emitted by the heating component 3 reaches the camera inner cavity shell 1 through the flange 11 of the camera inner cavity shell 1, the fixing ring 4 and the screw and then reaches the filter glass 2, so that the structure is reasonable, the heating area is large, and the heating efficiency is high.
Further, the material of the fixing ring 4 is aluminum.
As can be seen from the above description, the material of the fixing ring 4 is aluminum, which has the advantages of fast heat transfer speed and strong heat transfer capability.
Further, the camera further comprises a first temperature sensor 5, and the first temperature sensor 5 is fixed on the inner ring wall of the camera inner cavity shell 1.
As can be seen from the above description, the first temperature sensor 5 detects the temperature of the inner ring wall of the camera inner cavity housing 1, and then indirectly calculates the temperature of the filter glass 2, thereby detecting and controlling the temperature of the filter glass 2.
Further, the camera further comprises a humidity sensor and a second temperature sensor, wherein the humidity sensor and the second temperature sensor are fixed on the outer side wall of the camera inner cavity shell 1.
As can be known from the above description, humidity transducer and second temperature sensor are fixed on the lateral wall of camera inner chamber casing 1, can realize calculating the temperature and humidity in the environment, and then calculate dew point temperature, as long as guarantee that filter glass 2's temperature is higher than dew point temperature, can guarantee that filter glass 2 goes up can not the condensation, and the structure sets up rationally.
Referring to fig. 1 to fig. 3, a first embodiment of the present invention is:
a refrigeration camera with an anti-condensation function comprises a camera inner cavity shell 1 and filter glass 2 located in the camera inner cavity shell 1, wherein the filter glass 2 is embedded on the camera inner cavity shell 1, the refrigeration camera further comprises a heating component 3, a fixing ring 4, a first temperature sensor 5, a humidity sensor and a second temperature sensor, the heating component 3 comprises a resistance wire 31, two protective films 32 and two outgoing wires 33, the resistance wire 31 is a constantan resistance wire, the resistance wire 31 is wound into a plurality of n-shaped arrays, the protective films 32 are made of PET films, the resistance wire 31 is located in an interlayer of the two protective films 32 which are arranged in parallel, the two outgoing wires 33 are respectively connected with two ends of the resistance wire 31 in a riveting manner, a flange 11 matched with the heating component inner ring 3 is arranged on the camera inner cavity shell 1, two threading holes 12 are arranged at the root of the flange 11, threading hole 12 leads to from the root of flange 11 1 lateral surface of camera inner chamber casing, heating element 3 laminates on the flange 11, on the flange 11 with the face of heating element 3 laminating is the toper face, threading hole 12 with 33 shape adaptations of lead-out wire, heating element 3 is used for heating filter glass 2.
The inner side face of the fixing ring 4 is attached to the heating assembly 3, the fixing ring 4 is fixed on the camera inner cavity shell 1 through a screw, and the fixing ring 4 is made of aluminum.
The first temperature sensor 5 is fixed on the inner ring wall of the camera inner cavity shell 1, and the humidity sensor and the second temperature sensor are fixed on the outer side wall of the camera inner cavity shell 1.
In addition, still include sensitization chip 6 and chip circuit board 7, sensitization chip 6 and chip circuit board 7 all are located filter glass 2's back, first temperature sensor 5 with chip circuit board 7 is connected.
When the camera inner cavity shell is used, after the heating assembly 3 is heated, heat is transmitted to the camera inner cavity shell 1 through the flange 11, the fixing ring 4 and the screws of the camera inner cavity shell 1, and therefore the filter glass 2 embedded in the camera inner cavity shell 1 is heated; the first temperature sensor 5 detects the temperature on the inner ring wall of the camera inner cavity shell 1, thereby indirectly calculating the temperature of the filter glass 2; the second temperature sensor and the humidity sensor respectively detect the temperature and the humidity in the environment, so that the dew point temperature is indirectly calculated; as long as guarantee that the temperature of filter glass 2 is higher than dew point temperature, can guarantee not the condensation on the filter glass 2, then but the noise of greatly reduced camera improves the adaptability to ambient temperature and humidity of camera.
In summary, the refrigeration camera with the condensation prevention function provided by the invention heats the inner cavity shell 1 of the camera through the heating component 3, thereby indirectly heating the filter glass 2 fixed on the inner cavity shell 1 of the camera, the resistance wires 31 in the heating component 3 are wound into a plurality of shapes and are clamped by two PET films, the heating component 3 is attached and fixed on the flange 11 of the conical surface through the fixing ring 4 and the screw, the first temperature sensor 5 detects the temperature of the inner cavity shell 1 of the camera, thereby indirectly obtaining the temperature of the filter glass 2, the second temperature sensor and the humidity sensor respectively detect the temperature and the humidity of the environment, thereby indirectly obtaining the dew point temperature of the environment, realizing the control that the temperature of the filter glass 2 is not lower than the temperature, and the refrigeration camera has the advantages of reasonable structure, high heating efficiency, strong heating capability, stable performance of parts and long service life, the adaptability of the refrigeration county level to the ambient temperature and humidity is greatly improved, and the noise is reduced.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (5)
1. A refrigeration camera with an anti-condensation function and capable of calculating dew point temperature is characterized by comprising a camera inner cavity shell, filter glass positioned in the camera inner cavity shell, a heating assembly and a fixing ring, wherein the heating assembly is fixed on the camera inner cavity shell and used for heating the filter glass;
the heating assembly comprises a resistance wire and two protective films, the resistance wire is positioned in an interlayer of the two protective films which are arranged in parallel, a flange matched with the heating assembly is arranged on an inner ring of the camera inner cavity shell, and the heating assembly is attached to the flange; the inner side surface of the fixing ring is attached to the heating assembly, and the fixing ring is fixed on the camera inner cavity shell through a screw;
the camera further comprises a first temperature sensor, wherein the first temperature sensor is fixed on the inner ring wall of the camera inner cavity shell; the camera further comprises a humidity sensor and a second temperature sensor, wherein the humidity sensor and the second temperature sensor are fixed on the outer side wall of the camera inner cavity shell;
the resistance wires are wound into a plurality of shapes;
the surface of the flange, which is attached to the heating assembly, is a conical surface.
2. A refrigeration camera with a condensation prevention function and a dew point temperature calculation function according to claim 1, wherein the heating assembly further comprises two outgoing lines, the two outgoing lines are respectively connected with two ends of the resistance wire, the root of the flange is provided with two threading holes, the threading holes are communicated with the outer side surface of the camera inner cavity shell from the root of the flange, and the threading holes are matched with the outgoing lines in shape.
3. A refrigeration camera with an anti-condensation function and capable of calculating dew point temperature according to claim 1, wherein the protective film is made of PET film.
4. The refrigeration camera with the condensation prevention function and the dew point temperature calculation function as claimed in claim 2, wherein the resistance wire is a constantan resistance wire, and the lead wire is riveted with the end of the resistance wire.
5. A refrigeration camera with anti-condensation function and capable of calculating dew point temperature according to claim 1, characterized in that the material of the fixing ring is aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810105214.3A CN108254998B (en) | 2015-12-10 | 2015-12-10 | Refrigeration camera with prevent condensation function and can calculate dew point temperature |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510908821.XA CN105372909B (en) | 2015-12-10 | 2015-12-10 | Refrigeration camera with antifogging function |
| CN201810105214.3A CN108254998B (en) | 2015-12-10 | 2015-12-10 | Refrigeration camera with prevent condensation function and can calculate dew point temperature |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510908821.XA Division CN105372909B (en) | 2015-12-10 | 2015-12-10 | Refrigeration camera with antifogging function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108254998A CN108254998A (en) | 2018-07-06 |
| CN108254998B true CN108254998B (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510908821.XA Active CN105372909B (en) | 2015-12-10 | 2015-12-10 | Refrigeration camera with antifogging function |
| CN201810105213.9A Active CN108333854B (en) | 2015-12-10 | 2015-12-10 | High-temperature-resistant refrigeration camera with anti-condensation function |
| CN201810105225.1A Active CN108020981B (en) | 2015-12-10 | 2015-12-10 | Refrigeration camera with prevent condensation function and simple to operate |
| CN201810105214.3A Active CN108254998B (en) | 2015-12-10 | 2015-12-10 | Refrigeration camera with prevent condensation function and can calculate dew point temperature |
| CN201810105271.1A Active CN108153084B (en) | 2015-12-10 | 2015-12-10 | Refrigeration camera with prevent condensation function and noise reduction |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510908821.XA Active CN105372909B (en) | 2015-12-10 | 2015-12-10 | Refrigeration camera with antifogging function |
| CN201810105213.9A Active CN108333854B (en) | 2015-12-10 | 2015-12-10 | High-temperature-resistant refrigeration camera with anti-condensation function |
| CN201810105225.1A Active CN108020981B (en) | 2015-12-10 | 2015-12-10 | Refrigeration camera with prevent condensation function and simple to operate |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810105271.1A Active CN108153084B (en) | 2015-12-10 | 2015-12-10 | Refrigeration camera with prevent condensation function and noise reduction |
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| CN (5) | CN105372909B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6723194B2 (en) * | 2017-04-26 | 2020-07-15 | 株式会社東海理化電機製作所 | Imaging device |
| CN110875997A (en) * | 2018-08-29 | 2020-03-10 | 三赢科技（深圳）有限公司 | Camera head |
| CN109361845B (en) * | 2018-12-05 | 2023-10-27 | 武汉精立电子技术有限公司 | CCD camera structure capable of continuously shooting high-definition pictures |
| WO2020197289A1 (en) * | 2019-03-26 | 2020-10-01 | 엘지이노텍 주식회사 | Heating device and camera module |
| CN110095921A (en) * | 2019-06-05 | 2019-08-06 | 广东弘景光电科技股份有限公司 | Automatic temperature-sensed heats camera module |
| CN111381620A (en) * | 2019-12-12 | 2020-07-07 | 贵州电网有限责任公司 | Anti-icing camera heating strategy software implementation scheme |
| CN113645444B (en) * | 2021-07-30 | 2024-02-13 | 广西电网有限责任公司电力科学研究院 | Anti-icing binocular vision transmission line crossing point on-line monitoring device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2739671Y (en) * | 2004-10-22 | 2005-11-09 | 中国科学院西安光学精密机械研究所 | Digital camera temperature control device |
| JP2009117911A (en) * | 2007-11-01 | 2009-05-28 | Nikon Corp | Image apparatus |
| JP2009152971A (en) * | 2007-12-21 | 2009-07-09 | Nikon Corp | Imaging apparatus and observation equipment |
| CN201226073Y (en) * | 2008-07-10 | 2009-04-22 | 福州图森图像技术有限公司 | Digital camera with heat-dissipating structure |
| DE102008033316A1 (en) * | 2008-07-16 | 2010-01-21 | Siemens Aktiengesellschaft | Heating device for heating a glass surface, in particular a protective glass of an outdoor camera |
| CN102162980A (en) * | 2010-12-21 | 2011-08-24 | 天津市亚安科技电子有限公司 | Window glass dew prevention system for camera housing |
| CN202003121U (en) * | 2011-02-01 | 2011-10-05 | 胜品电通股份有限公司 | Defogging and defrosting device of camera protecting lens |
| CN201965385U (en) * | 2011-02-14 | 2011-09-07 | 杭州海康威视数字技术股份有限公司 | Anti-fogging camera |
| JP5562891B2 (en) * | 2011-03-30 | 2014-07-30 | 富士フイルム株式会社 | Imaging device |
| CN205157953U (en) * | 2015-12-10 | 2016-04-13 | 福州鑫图光电有限公司 | Refrigeration camera with prevent condensation function |
-
2015
- 2015-12-10 CN CN201510908821.XA patent/CN105372909B/en active Active
- 2015-12-10 CN CN201810105213.9A patent/CN108333854B/en active Active
- 2015-12-10 CN CN201810105225.1A patent/CN108020981B/en active Active
- 2015-12-10 CN CN201810105214.3A patent/CN108254998B/en active Active
- 2015-12-10 CN CN201810105271.1A patent/CN108153084B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105372909B (en) | 2018-03-06 |
| CN108254998A (en) | 2018-07-06 |
| CN108333854B (en) | 2020-10-30 |
| CN108153084B (en) | 2020-11-10 |
| CN108153084A (en) | 2018-06-12 |
| CN108020981A (en) | 2018-05-11 |
| CN105372909A (en) | 2016-03-02 |
| CN108020981B (en) | 2020-11-10 |
| CN108333854A (en) | 2018-07-27 |
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