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A Wide Temperature Range Control System for Source Blackbodies Under Vacuum Conditions

A surface source black body, temperature control technology, applied in the direction of temperature control, electric temperature control, control/regulation system, etc., can solve the problems of complex system structure, can not meet the wide temperature control range, etc. The effect of making up for edge energy loss and improving reliability

Active Publication Date: 2016-01-27
BEIJING ZHENXING METROLOGY & TEST INST
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the existing temperature control system has improved the temperature range and accuracy of the surface source blackbody, its system structure is complex, and none of them can meet the current demand for wide temperature control range.

Method used

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  • A Wide Temperature Range Control System for Source Blackbodies Under Vacuum Conditions
  • A Wide Temperature Range Control System for Source Blackbodies Under Vacuum Conditions
  • A Wide Temperature Range Control System for Source Blackbodies Under Vacuum Conditions

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Embodiment Construction

[0034] The following describes the technical solutions in the embodiments of the present invention clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all the embodiments, based on the invention. The embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work, fall within the protection scope of the present invention.

[0035] The embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, such as figure 1 Shown is a system design diagram provided by an embodiment of the present invention, figure 1 It includes: 1. Temperature control instrument, 2. Low temperature liquid nitrogen solenoid valve, 3. Programmable power supply, 4. PT100 sensor, 5 resistive heating film, 6. Pressurized liquid nitrogen system, 7. Area s...

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Abstract

The invention discloses a control system applicable to wide temperature ranges of surface source black bodies under a vacuum condition. The control system comprises a temperature control instrument, a program-controlled power supply, a temperature sensor, a refrigerating plant, a heating sheet and a surface source black body radiation source; the heating sheet and the temperature control instrument are respectively arranged on the surface source black body radiation source, a first control signal output end of the temperature control instrument is connected with the heating sheet by the program-controlled power supply, a second control signal output end of the temperature control instrument is connected with a control end of the refrigerating plant, and the refrigerating plant is connected with the surface source black body radiation source; the temperature sensor is connected with a signal input end of the temperature control instrument. The control system has the advantages that the temperature control ranges of the surface source black bodies can be effectively expanded by the aid of the control system, particularly, a control temperature lower limit of each surface source black body can reach 190K owing to a refrigerating mode, and a vacuum low-temperature infrared radiation standard source can be vividly simulated.

Description

Technical field [0001] The invention belongs to the field of space-borne infrared imager performance calibration equipment, and relates to a wide temperature range control system suitable for a source black body under vacuum conditions. The system can effectively improve the temperature control range of a surface source black body, especially a cooling method, which can make The lower limit of the control temperature of the surface source blackbody reaches 190K, which can realistically simulate the vacuum cryogenic infrared radiation standard source. Background technique [0002] The remote sensing data sent by the infrared remote sensing detector carried on the spacecraft is the electrical signal formed after the photoelectric conversion of the remote sensor. In order to invert the electrical signal into the radiation of the object, it is necessary to calibrate the infrared channel before the satellite is launched. . The calibration accuracy directly affects the accuracy of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D23/24G05D23/30
Inventor 杨旺林刘亚平魏建强张玉国王加朋
Owner BEIJING ZHENXING METROLOGY & TEST INST
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