Control system applicable to wide temperature ranges of surface source black bodies under vacuum condition

A surface source blackbody and control system technology, applied in temperature control, electric temperature control, control/regulation system, etc., can solve the problems of not meeting the wide temperature control range, complex system structure, etc., and achieve marginal energy loss , meet the test requirements, improve the reliability of the effect

Active Publication Date: 2014-03-26
BEIJING ZHENXING METROLOGY & TEST INST
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] Although the existing temperature control system has improved the temperature range and accuracy of the surface source

Method used

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  • Control system applicable to wide temperature ranges of surface source black bodies under vacuum condition
  • Control system applicable to wide temperature ranges of surface source black bodies under vacuum condition
  • Control system applicable to wide temperature ranges of surface source black bodies under vacuum condition

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the invention All other embodiments obtained by persons of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0035] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings, as figure 1 Shown is the system design diagram provided by the embodiment of the present invention,figure 1 Including: 1. Temperature control instrument, 2. Low-temperature liquid nitrogen solenoid valve, 3. Program-controlled power supply, 4. PT100 sensor, 5. Resistive heating plate, 6. Pressurized liquid nitrogen system, 7. Surface source blackbody radiati...

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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 performance calibration equipment for space-borne infrared imagers, and relates to a wide temperature range control system for source black bodies under vacuum conditions. The system can effectively improve the temperature control range of surface source black bodies, especially the cooling method, which can The lower limit of surface source black body control temperature reaches 190K, which can realistically simulate the vacuum low temperature infrared radiation standard source. Background technique [0002] The remote sensing data sent back by the infrared remote sensing detector carried on the space vehicle is an 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 level of calibration accuracy directly affects the accur...

Claims

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Application Information

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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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