CN101089658A - Method of non-refrigeration focal surface infrared cloud detection - Google Patents
Method of non-refrigeration focal surface infrared cloud detection Download PDFInfo
- Publication number
- CN101089658A CN101089658A CN 200710025125 CN200710025125A CN101089658A CN 101089658 A CN101089658 A CN 101089658A CN 200710025125 CN200710025125 CN 200710025125 CN 200710025125 A CN200710025125 A CN 200710025125A CN 101089658 A CN101089658 A CN 101089658A
- Authority
- CN
- China
- Prior art keywords
- refrigeration focal
- focal surface
- signal
- surface infrared
- refrigeration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Radiation Pyrometers (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
A method for measuring cloud by non-refrigeration focal plane infrared includes carrying out integration treatment on data at each point in original digital signal of image obtained by non-refrigeration focal plane infrared detector as per time sequence to obtain multi-frame average value for raising S-N ratio of signal then obtaining image signal of cloud and outputting obtained image signal.
Description
Technical field
The present invention relates to a kind of surface weather observation instrument and measuring method thereof, be specially a kind of survey cloud method of non-refrigeration focal surface infrared cloud detection sensor.
Background technology
The non-refrigerating infrared focal plane nineties in 20th century (UFPA) technology has reached the practicability level, this technology makes the infra-red thermal imaging system that depends on low-temperature working break away from complicated refrigerating plant, realized small-sized, reliable, relatively inexpensive application, especially obtained using widely at aspects such as the precise guidance of military field, thermal imaging tracking, but the signal to noise ratio (S/N ratio) of its original signal is not high, the codomain scope is little, can not directly apply to the detection of the cloud in the atmospheric science.
Non-refrigerating infrared focal plane is used in surveying cloud and is in conceptual phase at present, directly adopt thermal camera as surveying the distribution that the cloud sensor obtains the sky cloud as infrared cloud imager (ICI), not big at atmosphere infrared radiation codomain scope, the characteristics that signal to noise ratio (S/N ratio) is not high are surveyed the cloud Design of Sensor.
And adopt the refrigerating infrared focal plane sensor all very high on manufacturing cost and use cost.
Summary of the invention
The present invention seeks to: change characteristics at the atmosphere infrared radiation,, develop a kind of signal to noise ratio (S/N ratio) height, picture quality is good, data rate is fast, cost is low non-refrigeration focal surface infrared cloud detection sensor, for use in the detection of cloud by a series of digital processing.
Technical scheme of the present invention is: uncooled ir is surveyed the cloud sensor, the raw digital signal that is the image of cloud that the non-refrigeration focal surface infrared eye is obtained is done Integral Processing to the data of each point in the image chronologically, promptly get the multi-frame mean value, thereby improve the signal to noise ratio (S/N ratio) of signal, obtain the picture signal output of cloud again.
Especially pending each frame image signal writes the RAM storer through totalizer back of adding up by sequence of addresses, and output allows the signal read after finishing the multiframe integration.The frame number of multiframe is The more the better, but is directly proportional therewith integral time, generally carries out 64-512 frame integration, also is not limited to this scope certainly.
The non-refrigeration focal surface infrared cloud detection method constitutes sensor, form by non-refrigeration focal surface infrared eye, front end signal circuit, A/D convertor circuit, FPGA or CPLD logic array, CPU or ARM, the output of non-refrigeration focal surface infrared eye connects front end signal circuit and A/D convertor circuit, the input end that connects FPGA or CPLD logic array again, the control end of FPGA or CPLD logic array is connected with the control end of CPU or ARM; FPGA or CPLD logic array are finished the multiframe integration of each point on the picture frame, comprise a totalizer and a dual port RAM.
Non-refrigeration focal surface infrared cloud detection sensor of the present invention also is provided with network chip, connects the interface of CPU or ARM, uses the data after procotol is transmitted integration, and procotol is an ICP/IP protocol.
Beneficial effect of the present invention is: transmission speed is fast, precision is high, reducing noise, make image quality improvement, cloud body clarity of detail; NETD reduces to 10mK by 100mK in theory.Non-refrigeration infrared image device temperature adaptation ability is strong, suitable ground is surveyed the application of cloud automatically, characteristics at the cloud detection, adopt many video integrations of pure digi-tal (FPGA) to handle, improve the signal to noise ratio (S/N ratio) of infrared image signal, with the procotol transmission, the peak velocity of transmission can reach 100M/s, satisfies the requirement of terminal to data speed and interface generality.Preparation of the present invention and use cost are all lower.
Description of drawings
Fig. 1 surveys the structured flowchart of cloud sniffer for embodiment of the invention uncooled ir.
Fig. 2 is a multiframe digital integration block diagram.
Fig. 3 is integration of the present invention and transmission course figure.
Embodiment
As Fig. 1, the polysilicon non-refrigerated infrared focal plane probe that the infrared imaging assembly uses French SOFADIR company to produce, induction mode is a micro-metering bolometer, and surveying elemental size is 320 * 240, and original image signal length is 10bit.Each pending frame image signal writes the RAM storer by sequence of addresses after adding up through totalizer, next frame picture signal and this signal add up, output allows the signal read (frame number of multiframe is The more the better after finishing 128 frame integrations, but be directly proportional integral time therewith, therefore get 128 frame integrations), to take out, be transferred to terminal computer with procotol by sensing circuit through ARM systematic microprocessor and network-driven chip as the sequential of Fig. 2 16bit digital video signal after with integration.
Above-mentioned non-refrigerated infrared focal plane probe can be micro-metering bolometer or thermoelectric pile or pyroelectricity type, and pixelated array can select 320 * 240 or other pixel according to actual needs; Use samsung4510 ARM systematic microprocessor, also can be with other CPU microprocessor; The network-driven chip is selected RTL8201 for use; Procotol is an ICP/IP protocol; The integration frame number can be selected in 64-256 interframe.
Claims (7)
1, the method for non-refrigeration focal surface infrared cloud detection, the raw digital signal that it is characterized in that the image of cloud that the non-refrigeration focal surface infrared eye is obtained is done Integral Processing to the data of each point in the image chronologically, promptly get the multi-frame mean value, thereby improve the signal to noise ratio (S/N ratio) of signal, obtain the picture signal output of cloud again.
2, the method for non-refrigeration focal surface infrared cloud detection according to claim 1, it is characterized in that forming by the flat infrared eye of non-refrigeration focal plane, front end signal circuit, A/D convertor circuit, FPGA or CPLD logic array, CPU or ARM, the output of the flat infrared eye of non-refrigeration focal plane connects front end signal circuit and A/D convertor circuit, the input end that connects FPGA or CPLD logic array again, the control end of FPGA or CPLD logic array is connected with the control end of CPU or ARM; FPGA or CPLD logic array are finished the multiframe integration of each point on the picture frame, comprise a totalizer and a dual port RAM.
3, the method for non-refrigeration focal surface infrared cloud detection according to claim 1 is characterized in that being provided with network chip, connects the interface of CPU or ARM, uses the data after procotol is transmitted integration, and procotol is an ICP/IP protocol.
4,, it is characterized in that the non-refrigeration focal surface infrared eye adopts micro-metering bolometer or thermoelectric pile or pyroelectricity type according to the method for claim 1 and 2 described non-refrigeration focal surface infrared cloud detections.
5, the method for non-refrigeration focal surface infrared cloud detection according to claim 1 is characterized in that each frame image signal writes the RAM storer through totalizer back of adding up by sequence of addresses, and output allows the signal read after finishing the multiframe integration.
6, the method for non-refrigeration focal surface infrared cloud detection according to claim 1 is characterized in that carrying out 64-512 frame integration.
7, the method for non-refrigeration focal surface infrared cloud detection according to claim 1 is characterized in that carrying out 128 frame integrations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710025125XA CN100510781C (en) | 2007-07-13 | 2007-07-13 | Method of non-refrigeration focal surface infrared cloud detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710025125XA CN100510781C (en) | 2007-07-13 | 2007-07-13 | Method of non-refrigeration focal surface infrared cloud detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101089658A true CN101089658A (en) | 2007-12-19 |
| CN100510781C CN100510781C (en) | 2009-07-08 |
Family
ID=38943082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710025125XA Expired - Fee Related CN100510781C (en) | 2007-07-13 | 2007-07-13 | Method of non-refrigeration focal surface infrared cloud detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100510781C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702036B (en) * | 2009-11-16 | 2010-12-08 | 中国科学院大气物理研究所 | Infrared sky instrument |
| CN102073069A (en) * | 2010-12-08 | 2011-05-25 | 北京空间飞行器总体设计部 | All-weather and all-time cloud coverage graph continuous imager |
| CN104486562A (en) * | 2014-12-26 | 2015-04-01 | 昆明物理研究所 | Embedded infrared image super frame processing method based on fixed integral time |
-
2007
- 2007-07-13 CN CNB200710025125XA patent/CN100510781C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702036B (en) * | 2009-11-16 | 2010-12-08 | 中国科学院大气物理研究所 | Infrared sky instrument |
| CN102073069A (en) * | 2010-12-08 | 2011-05-25 | 北京空间飞行器总体设计部 | All-weather and all-time cloud coverage graph continuous imager |
| CN102073069B (en) * | 2010-12-08 | 2011-12-28 | 北京空间飞行器总体设计部 | All-weather and all-time cloud coverage graph continuous imager |
| CN104486562A (en) * | 2014-12-26 | 2015-04-01 | 昆明物理研究所 | Embedded infrared image super frame processing method based on fixed integral time |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100510781C (en) | 2009-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105300175B (en) | The sniperscope that a kind of infrared and low-light two is blended | |
| CN100510781C (en) | Method of non-refrigeration focal surface infrared cloud detection | |
| JP2019512964A (en) | Self-correcting adaptive low-light optical payload | |
| CN106289532A (en) | The temperature extracting method of a kind of thermal-induced imagery and device | |
| Endoh et al. | Uncooled infrared detector with 12um pixel pitch video graphics array | |
| CN104154932B (en) | Implementation method of high-dynamic star sensor based on EMCCD and CMOS | |
| WO2020214719A1 (en) | Thermal ranging devices and methods | |
| CN103969829B (en) | Based on simple detector optical imaging system and the method for MEMS micro scanning mirror | |
| CN109981966A (en) | A kind of super-resolution imaging camera and its imaging method | |
| Gordiyenko et al. | A multi-element thermal imaging system based on an uncooled bolometric array | |
| CN103462623A (en) | X-ray digital imaging system capable of acquiring images fast | |
| Ardilanov et al. | Development of Large-Format Camera Systems Based on the Latest Generation Sensors for the 6-m Telescope | |
| Bieszczad et al. | Image processing module for high-speed thermal camera with cooled detector | |
| CN205562046U (en) | Three -dimensional hot imaging device of hand -held type | |
| CN204761571U (en) | Infrared thermal imaging system | |
| WO2022012091A1 (en) | A germanium silicon image sensor, a collection module, and a tof depth camera | |
| US11454545B2 (en) | System and method for depth thermal imaging module | |
| Urbaś et al. | Development of low-resolution, low-power and low-cost infrared System | |
| 汪德棠 et al. | Polarization redundancy estimation scene-based non-uniformity correction algorithm | |
| CN103313035A (en) | Infrared imaging signal output system with wireless transmitting function | |
| CN114913096B (en) | Feature initialization non-uniform correction method and system thereof | |
| SUN et al. | 3D Range-gated Imaging Method Based on Parabolic Envelope Inversion | |
| 周前飞 et al. | Geometric correction of oblique images for array CCD aerial cameras | |
| Xiao-ke et al. | Study on the Pointing Error Model of Terahertz Telescopes with Optically Assisted Pointing Measurements | |
| Ashcroft et al. | A miniature ruggedized fast frame rate infrared sensor module for hostile fire detection and industrial applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20140713 |
|
| EXPY | Termination of patent right or utility model |