Control system and method for suppressing abnormal temperature of infrared focal plane
A technology of infrared focal plane and control system, which is applied in the field of control system for suppressing abnormal temperature of infrared focal plane, which can solve problems such as thermal imaging image quality degradation, long startup stabilization time, poor non-uniformity of detector output image, etc., and achieve constant temperature , The effect of starting current stability
Active Publication Date: 2018-12-25
江苏北方湖光光电有限公司
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[0005] At present, the temperature of the focal plane of the detector in the domestic infrared detection equipment rises too fast during the start-up process, and the temperature of the focal plane repeatedly oscillates during the start-up stabilization process. decline in quality
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[0028] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
[0029] When the existing domestic infrared detection equipment is turned on, the instantaneous current is too large, the focal plane of the detector has excessive heat generation, and the temperature is abnormal, which leads to the deterioration of the output image quality due to the rapid temperature rise of the detector when the startup is started.
[0030] In view of this, the present inventi...
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The invention discloses a control system and a control method for inhibiting temperature abnormity of an infrared focal plane, wherein the control system and the control method belong to the field of infrared thermal imaging technology. The control method comprises the steps of in system starting and electrification, performing an initializing operation by a processor, lowering an enabling end of a TEC power supply circuit, and keeping enabling voltage which is output from the TEC power supply circuit to a TEC controller to zero; and after processor initialization is finished, increasing voltage of the enabling end of the TEC power supply circuit by the processor, outputting the enabling voltage by the TEC power supply circuit to a TEC controller, and starting to perform temperature control on an infrared focal plane detector. According to the control system and the control method, the processor controls power supplying time of the TEC power supply circuit to the TEC controller, thereby ensuring stable starting current and constant temperature of the focal plane of the detector in a starting preparation process of infrared detecting equipment, preventing infrared image quality reduction caused by factors such as overhigh instant temperature increase speed and temperature fluctuation of the infrared focal plane, and outputting a thermal imaging image with relatively high quality.
Description
technical field [0001] The invention relates to the technical field of infrared thermal imaging, in particular to a control system and method for suppressing abnormal temperature of an infrared focal plane. Background technique [0002] As the manufacturing process of domestic infrared detectors continues to mature, more and more domestic infrared detectors are widely used in civilian and military markets. The infrared detector integrates a semiconductor thermoelectric cooler (English: ThermoElectric Cooler, TEC for short) inside the tube shell. The infrared detector needs an external TEC controller to cool or heat the pixels on the focal plane of the infrared detector, so that The internal sensor of the infrared detector is maintained at a stable temperature point, and the TEC control strategy of the infrared detector directly affects the response sensitivity of the focal plane of the infrared detector and the image output quality. Due to its special imaging mechanism, inf...
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IPC IPC(8): G05D23/20G01J5/00
CPCG01J5/00G01J2005/0077G05D23/20
Inventor 韩瑞顾鑫钱佳高志强王世允王洪涛
Owner 江苏北方湖光光电有限公司