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Infrared sky instrument

A cloud and infrared technology, applied to scientific instruments, using multiple variables to indicate weather conditions, measuring devices, etc., can solve the problems of insufficient judgment resolution, insufficient detailed and complete data, etc.

Active Publication Date: 2010-05-05
INST OF ATMOSPHERIC PHYSICS CHINESE ACADEMY SCI
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  • Application Information

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Problems solved by technology

Because it can only distinguish the gray level of the photo, the resolution of the cloud shape and cloud amount is not enough, and it can only be measured during the day, so the cloud information is not detailed and complete.

Method used

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Embodiment Construction

[0018] Referring to the accompanying drawings, the present invention is described in detail.

[0019] See attached figure 1 , Infrared cloud sky instrument is composed of infrared temperature measurement unit, two-dimensional scanning platform and controller, control and data acquisition and processing microcomputer.

[0020] The infrared temperature measurement unit is a fast-response non-contact infrared temperature measurement thermometer, which directly transmits the target infrared radiation brightness temperature value in the field of view to the control and data acquisition and processing microcomputer. Its technical indicators are:

[0021] Temperature range: -100℃~500℃

[0022] Response wavelength range: 8 ~ 14um

[0023] Response time: 25ms

[0024] Distance ratio: 25:1, equivalent to a field of view of 2.3°

[0025] Operating environment temperature: -20℃~60℃

[0026] Data interface: RS232C

[0027] The microcomputer for control and data acquisition and proce...

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Abstract

The invention relates to an infrared sky instrument comprising an infrared temperature measurement unit, a two-dimension scanning platform, a controller and a control and data collection processing microcomputer. The infrared temperature measurement unit is a rapidly-response non-contact infrared temperature measurement thermometer; the two-dimension scanning platform comprises an azimuth scanning mechanism and a pitch scanning mechanism; the controller comprises a stepping motor driver (Motor Driver) satisfying the use requirements of a stepping motor, a micro chip computer and a communication interface chip; the two-dimension scanning platform drives the rapidly-response infrared temperature measurement unit to carry out all-day sky stereoscan under the control of the controller and the data collection processing micro computer and stores the measured cloud base infrared radiation bright temperature values in the conditions of specified azimuth and elevation into the control and data collection processing micro computer. After the scanning is finished, the infrared radiation bright temperature values corresponding to different azimuths and elevations are spliced together to form an all-sky infrared radiation bright temperature distribution chart. The measurement can be carried out whenever in the day or at night as infrared radiation of clouds are measured. The infrared sky instrument can substitute the original cloud observation means, and can obtain all-weather refined cloud data of sky cloud form and cloud cover.

Description

technical field [0001] The invention relates to an all-sky infrared brightness temperature measuring device, which can be used as a practical device for analyzing and measuring sky cloud shape and cloud amount in meteorological and atmospheric detection, especially a device for measuring at night. Background technique [0002] The acquisition of cloud data in the early ground meteorological observations mainly relied on regular observations by human eyes. Due to individual differences, the subjectivity of people is strong, and the work intensity is also high. Recently, devices with similar functions include visible light all-sky camera systems, which are equipped with fisheye The lens (180° field of view) is composed of a camera plus a light-blocking ball that blocks direct sunlight, and it can obtain cloud information by taking pictures of the clouds in the whole sky. Because it can only distinguish the gray level of the photos, the resolution of the cloud shape and cloud a...

Claims

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Application Information

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IPC IPC(8): G01W1/02
Inventor 宣越健章文星吕达仁
Owner INST OF ATMOSPHERIC PHYSICS CHINESE ACADEMY SCI
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