CN108415483A - Photogrammetric apparatus - Google Patents
Photogrammetric apparatus Download PDFInfo
- Publication number
- CN108415483A CN108415483A CN201810242974.9A CN201810242974A CN108415483A CN 108415483 A CN108415483 A CN 108415483A CN 201810242974 A CN201810242974 A CN 201810242974A CN 108415483 A CN108415483 A CN 108415483A
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- Prior art keywords
- temperature
- safety
- camera
- photogrammetric apparatus
- end wall
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Studio Devices (AREA)
Abstract
A kind of photogrammetric apparatus comprising safety can, video camera, temperature sensor, temperature adjustment platform and camera controller；Safety can sealed set, including the first end wall, the second end wall being oppositely arranged, and the side wall of connection the first end wall and the second end wall, at least side wall is the constant temperature wall with temperature control cabin, second end wall is equipped with safety can window, and safety can window is made of transparent material；Video camera setting is in safety can, camera lens face safety can window；Temperature sensor is used to acquire the temperature in safety can；The temperature of the constant temperature wall in the temperature control temperature control cabin that temperature adjustment platform is acquired according to temperature sensor is between 15 DEG C~30 DEG C；Camera controller is for the image of acquisition camera, setting camera parameters and control camera shutter.
Description
Technical field
The present invention relates to environmental test chamber application field, more particularly to a kind of photogrammetric apparatus.
Background technology
The imaging sensing element of video camera is generally the PN junction principle semiconductor based on semiconductor and makees the main body object being imaged
Matter.For example, a kind of typical semiconductor sensitive element, on PN junction plus reverse biased forms depletion layer, when there is photon incidence,
Ionization generates electron-hole pair in depletion layer, and external circuit will collect the electron-hole pair of ionization generation, to believe light
Number it is converted into electric signal.
It is well known that general video camera all selects CCD semiconductors as image-forming component at present, depletion region is due to heat shock
The electron-hole pair generated is sent out, the consequence that image quality can be caused to be deteriorated.The hot generation rate of electron-hole pair is with depletion region
The increase of volume and the raising of temperature and dramatically increase, as long as by CCD elements cool down as long as can make its reduction.
Video camera under atmospheric conditions/photograph function continuously works normally, and need to overcome wider range of temperature
Imaging problem under (- 10 DEG C~+50 DEG C).
In consideration of it, urgent need to resolve above-mentioned technical problem of the present invention.
Invention content
There can be the photogrammetric apparatus for stablizing photographical condition the invention mainly solves the technical problem of providing a kind of.
In order to solve the above technical problems, one aspect of the present invention is：A kind of photogrammetric apparatus is provided,
Including safety can, video camera, temperature sensor, temperature adjustment platform and camera controller；Safety can sealed set, including set relatively
The first end wall, the second end wall set, and the side wall of the first end wall and the second end wall is connected, at least side wall is with temperature control cabin
Constant temperature wall, the second end wall are equipped with safety can window, and safety can window is made of transparent material；Video camera setting is in safety can
In, camera lens face safety can window；Temperature sensor is used to acquire the temperature in safety can；Temperature adjustment platform is passed according to temperature
The temperature of the constant temperature wall in the temperature control temperature control cabin of sensor acquisition is between 15 DEG C~30 DEG C；Camera controller is imaged for acquiring
Image, setting camera parameters and the control camera shutter of machine.
Wherein, the inside useful space >=φ 300mm × 300mm of safety can.
Wherein, the quartz glass of safety can window use >=φ 170mm.
Wherein, insulating layer is arranged in safety can outer surface, and insulating layer is the insulation material layer of cladding/coating on the outside of safety can.
Wherein, temperature on the first end wall of safety can is set and measures interface, radio frequency interface and camera observing and controlling interface.
Wherein, camera power supply is fixed in safety can.
Wherein, photogrammetric apparatus further includes barometer, and barometer to the air pressure in safety can for measuring record.
Wherein, temperature adjustment platform is freezed and is heated respectively to refrigerating medium using refrigeration compressor and electric heater, is carried
Cryogen is passed through temperature control cabin by transmission pump.
Wherein, refrigeration compressor is that 2Hp seals compressor entirely, uses R404a working medium, so that refrigerant temperature refrigeration is to most
Low is -40 DEG C；Electric heater capacity is 2Kw, so that refrigerant temperature is heated to up to 60 DEG C；Refrigerating medium is using ethylene glycol
Aqueous solution, to ensure the constant temperature wall temperature in temperature control cabin between 15 DEG C~30 DEG C.
Wherein, temperature control cabin is sealed using viton seal ring.
The beneficial effects of the invention are as follows：Compared with prior art, the protection pot sidewall of photogrammetric apparatus of the present invention is tool
There are the constant temperature wall in temperature control cabin, the temperature of the constant temperature wall in the temperature control temperature control cabin that temperature adjustment platform is acquired according to temperature sensor to exist
Between 15 DEG C~30 DEG C, due to safety can sealed set, the temperature in safety can also has that there are one the humidity provinces stablized
Between, it is ensured that the normal work of video camera, photogrammetric apparatus of the present invention not only can be used as environment simulation facility dedicated video camera, to supervise
The large-scale vacuum tank internal part motion conditions of testing temperature wider range also are used as essence under vacuum condition after replacing video camera
Close range unit has wider application range.
Description of the drawings
Fig. 1 is the structural schematic diagram of one better embodiment of photogrammetric apparatus of the present invention；
Fig. 2 is the front view of the safety can of photogrammetric apparatus shown in Fig. 1；
Fig. 3 is the left view of the safety can of photogrammetric apparatus shown in Fig. 1.
Specific implementation mode
The present invention provides a kind of photogrammetric apparatus, please refers to the preferred embodiment of photogrammetric apparatus shown in Fig. 1-Fig. 3.
Photogrammetric apparatus includes safety can 1, video camera 2, temperature sensor 3, temperature adjustment platform 4 and camera controller 5.
1 sealed set of safety can, including the first end wall 11, the second end wall 12 that are oppositely arranged, and the first end wall of connection
11 and second end wall 12 side wall 13.At least side wall 13 is the constant temperature wall with temperature control cabin, and the second end wall 12 is equipped with safety can
Window 121, safety can window 121 are made of transparent material.
In the present embodiment, side wall 13 is the constant temperature wall with temperature control cabin.In other examples, other than side wall 13,
It can also be the perseverance with temperature control cabin not to be arranged at the position of safety can window 121 on first end wall 11 and/or the second end wall 12
Wen Bi.
In the present embodiment, 1 shell of safety can is substantially in cylinder, and side wall is in hollow cylindrical.Preferably, safety can
The inside useful space >=φ 300mm × 300mm, weight≤20kg of safety can 1.
Preferably, the quartz glass of safety can window use >=φ 170mm；Quartz glass can be infrared optics quartz glass
Glass can also be common quartz glass.
In order to make hermetically sealed can 1 that there is good leakproofness, high-low temperature resistant Seal Design is all made of at hermetically sealed can link position.
Preferably, temperature control cabin is sealed using high-low temperature resistant viton seal ring.
For the ease of the installation, maintenance of camera, 1 dismantled and assembled design of hermetically sealed can, so that repeatability installation, safety can window
It need not repeat to dismount in the case of inessential, the hatchcover of the first end wall 11 and the second end wall 12 as temperature control cabin, the sealing ring of hatchcover
It needs to wipe seal groove using absolute ethyl alcohol before installation.
When safety can assembles, safety can window 121 and hatchcover (the first end wall 11 and the second end wall 12) are all made of stainless steel
Bolt is installed, and washes of absolute alcohol, acetone dehydration must be used before stainless steel bolt installation.
Become using the heat transfer free convection of high/low temperature safety can (TED_ATMO) and high/low temperature gas under normal pressure and changes
The major part of heat, ranging from -100 DEG C~100 DEG C of high/low temperature warm area；High/low temperature safety can needs under normal pressure are set in outer surface
Insulating layer is set, to reduce influence of the heat convection to temperature control, insulating layer can be the heat-barrier material of cladding/coating on the outside of safety can
The thickness of layer, insulating layer is 10mm~60mm, it is preferable that insulation layer thickness 20mm, to ensure in the working time in safety can
Temperature range between 15 DEG C~30 DEG C.
There is experimental data to learn, under normal pressure, diameter 400mm, long 400mm, with 20mm insulating layers safety can 1, with
When the environmental gas temperature difference is up to 30 DEG C, heat transfer free convection power about 70W；In -100 DEG C~100 DEG C of environment, the safety can
Heat exchange power is up to about 200W, and energy consumption is smaller.
Under vacuum environment, vacuum high/low temperature safety can (TED_VACU) and environment will not generate free convection, safety can without
Insulating layer need to be set.
It is connect in addition, temperature is arranged on the first end wall of safety can and measures interface 111, radio frequency interface 113 and camera observing and controlling
Mouth 112, temperature measure interface 111 and are connect with temperature sensor, and camera observing and controlling interface 112 connects video camera, radio frequency interface connection
Video camera is used for extended simulation video camera.Temperature measures interface 111, video interface 113 and camera observing and controlling interface 112 and is both needed to adopt
It is fixed with sealing ring, wherein temperature measures interface 111 and video interface 113 is all made of viton seal ring, and video interface 113 is adopted
The sealing ring carried with connector.
Video camera 2 is set in safety can 1, camera lens face safety can window 121.In the present embodiment, video camera 2 is fixed
On fixed frame in safety can.By fixing video camera 2, the camera lens face safety can window of video camera 2 both may insure,
And it can ensure the stability in use of video camera.Further, camera power supply 2 is also fixed in safety can 1, according to taking the photograph
The size of camera and its power supply designs mounting means and installation dimension in safety can in advance.
Temperature sensor 3 is used to acquire the temperature in safety can 1.
Temperature adjustment platform 4 is set to outside safety can, according to the constant temperature in the temperature control temperature control cabin that temperature sensor 3 acquires
The temperature of wall is between 15 DEG C~30 DEG C.Temperature adjustment platform is also known as constant temperature machine.In the present embodiment, temperature is adjusted platform and is pressed using refrigeration
Contracting machine and electric heater are freezed and are heated respectively to refrigerating medium, and refrigerating medium is passed through temperature control cabin by transmission pump.Temperature adjusts
Temp controlled meter is set on platform, and connecting the temperature on 1 first end wall of safety can by temperature control feedback line measures interface 111, passes through load
Cryogen transfer tube is connected to temperature control cabin.For example, refrigeration compressor is 2Hp seals compressor entirely, R404a working medium is used, so that refrigerating
Agent temperature refrigeration is to minimum -40 DEG C；Electric heater capacity is 2Kw, so that refrigerant temperature is heated to up to 60 DEG C；Refrigerating
Agent is the aqueous solution using ethylene glycol, to ensure the constant temperature wall temperature in temperature control cabin between 15 DEG C~30 DEG C.
Camera controller 5 is set to outside safety can 1, and the camera observing and controlling interface being arranged on safety can 1 is connected by control line
112 and video interface 113.Camera controller 5 is for the image of acquisition camera 1, setting camera parameters and control camera shooting
Machine shutter.
Photogrammetric apparatus further includes barometer, and barometer to the air pressure in safety can for measuring record.Due to
The air-tightness of safety can is high, and leak rate control is in 1 × 10-9Pam/s hereinafter, the air pressure change rate under room temperature is about 10Pa/
Magnitude.In high/low temperature changing environment, the air pressure change in safety can be estimated according to The Ideal-Gas Equation, but
It is minimum to change numerical value.At present using diaphragm pressure transducers come to monitor the variation be a method, but because domestic film
Rule precision is poor (0.5%), and measurement error should be bigger than changing value, the necessity not measured；According to the high-precision of external import
Film rule measure, and rule value is higher, and there are the confined problems of import.Therefore, barometer can also be not necessarily to setting.
May include following two about the mounting means of safety can 1：Mode one：It is very small in no vibration or vibration
Chamber in use, can float and rest on workbench；Mode two：In the undesirable chamber of vibration isolation, it is proposed that consolidate safety can
It is scheduled on workbench.Preferably, workbench selects duralumin material to make.
Compared with prior art, 1 side wall 13 of safety can of photogrammetric apparatus of the present invention is the constant temperature wall with temperature control cabin,
The temperature that temperature adjustment platform 4 is acquired according to temperature sensor 3 controls the temperature of the constant temperature wall in temperature control cabin between 15 DEG C~30 DEG C,
Due to 1 sealed set of safety can, the temperature in safety can 1 also has that there are one the temperature ranges stablized, it is ensured that video camera 2
Normal work, photogrammetric apparatus of the present invention not only can be used as environment simulation facility dedicated video camera, to monitoring temperature range compared with
Wide large-scale vacuum tank internal part motion conditions also are used as precise distance measurement device under vacuum condition after replacing video camera,
With wider application range.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (10)
1. a kind of photogrammetric apparatus, which is characterized in that the photogrammetric apparatus includes safety can, video camera, temperature sensing
Device, temperature adjustment platform and camera controller；
The safety can sealed set, including the first end wall, the second end wall that are oppositely arranged, and connection the first end wall and second
The side wall of end wall, at least described side wall are the constant temperature wall with temperature control cabin, and second end wall is equipped with safety can window, described
Safety can window is made of transparent material；
The video camera setting is in the safety can, safety can window described in camera lens face；
The temperature sensor is used to acquire the temperature in safety can；
Temperature adjustment platform controls the temperature of the constant temperature wall in the temperature control cabin according to the temperature that the temperature sensor acquires at 15 DEG C
Between~30 DEG C；
The camera controller is used to acquire the image, setting camera parameters and control camera shutter of the video camera.
2. photogrammetric apparatus according to claim 1, which is characterized in that the inside useful space >=φ of the safety can
300mm×300mm。
3. photogrammetric apparatus according to claim 2, which is characterized in that the safety can window use >=φ 170mm
Quartz glass.
4. photogrammetric apparatus according to claim 1, which is characterized in that insulating layer is arranged in the safety can outer surface,
The insulating layer is the insulation material layer of cladding/coating on the outside of safety can.
5. photogrammetric apparatus according to claim 1, which is characterized in that temperature is arranged on the first end wall of the safety can
Degree measures interface, radio frequency interface and camera observing and controlling interface.
6. photogrammetric apparatus according to claim 1, which is characterized in that the camera power supply is fixed at described anti-
It protects in tank.
7. photogrammetric apparatus according to claim 1, which is characterized in that the photogrammetric apparatus further includes air pressure
Meter, the barometer to the air pressure in safety can for measuring record.
8. photogrammetric apparatus according to claim 1, which is characterized in that the temperature adjustment platform uses refrigeration compressor
Refrigerating medium is freezed and heated respectively with electric heater, refrigerating medium is passed through the temperature control cabin by transmission pump.
9. photogrammetric apparatus according to claim 8, which is characterized in that the refrigeration compressor is that 2Hp seals compression entirely
Machine uses R404a working medium, so that refrigerant temperature refrigeration is to minimum -40 DEG C；The electric heater capacity is 2Kw,
So that the refrigerant temperature is heated to up to 60 DEG C；The refrigerating medium is the aqueous solution using ethylene glycol, described to ensure
The constant temperature wall temperature in temperature control cabin is between 15 DEG C~30 DEG C.
10. photogrammetric apparatus according to claim 1, which is characterized in that the temperature control cabin uses viton seal ring
It is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810242974.9A CN108415483A (en) | 2018-03-23 | 2018-03-23 | Photogrammetric apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810242974.9A CN108415483A (en) | 2018-03-23 | 2018-03-23 | Photogrammetric apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108415483A true CN108415483A (en) | 2018-08-17 |
Family
ID=63132275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810242974.9A Pending CN108415483A (en) | 2018-03-23 | 2018-03-23 | Photogrammetric apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108415483A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109976068A (en) * | 2019-03-29 | 2019-07-05 | 北京卫星制造厂有限公司 | A kind of Portable type high-low temperature camera shooting protective device |
| CN113587903A (en) * | 2021-06-08 | 2021-11-02 | 中绘云图信息科技有限公司 | Photogrammetric device for automatically matching image features and extracting vector diagram |
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| CN206757429U (en) * | 2017-04-17 | 2017-12-15 | 广州惠利电子材料有限公司 | A kind of specimen cup thermostatically-controlled equipment of viscosity test |
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| US20070029496A1 (en) * | 2005-06-22 | 2007-02-08 | Jean-Paul Bouhnik | Method and apparatus for reducing polarization within an imaging device |
| CN102116620A (en) * | 2009-12-31 | 2011-07-06 | 北京卫星环境工程研究所 | Protection compartment for CCD (Charge Coupled Device) photographic surveying in vacuum low-temperature environment |
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| CN103616791A (en) * | 2013-12-10 | 2014-03-05 | 大连理工大学 | Camera lens heat-insulating cooling and temperature control device |
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| CN109976068A (en) * | 2019-03-29 | 2019-07-05 | 北京卫星制造厂有限公司 | A kind of Portable type high-low temperature camera shooting protective device |
| CN109976068B (en) * | 2019-03-29 | 2021-07-13 | 北京卫星制造厂有限公司 | Portable high-low temperature camera protection device |
| CN113587903A (en) * | 2021-06-08 | 2021-11-02 | 中绘云图信息科技有限公司 | Photogrammetric device for automatically matching image features and extracting vector diagram |
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Application publication date: 20180817 |