Infrared analog detector and design method thereof

An infrared simulation and detector technology, applied in the field of infrared thermal imaging, can solve the problems of difficult component control, low growth efficiency, and small number, and achieve the effect of shortening the development cycle

Inactive Publication Date: 2012-07-11
NANJING UNIV OF SCI & TECH
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Problems solved by technology

At present, the most mainstream staring type cooling detector material is HgCdTe material. Judging from the current usage, this material has the highest detection rate, but it also has its own manufacturing technical difficulties.
The biggest problem is that in the growth process of the focal plane film, it is difficult to control the composition of the elements in the HgCdTe material. At the same time, the choice of the growth method of the film also determines the existence of dislocations, surface crossings, and twinning in the lattice of the HgCdTe material. At present, molecular epitaxy (MBE), t

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  • Infrared analog detector and design method thereof
  • Infrared analog detector and design method thereof
  • Infrared analog detector and design method thereof

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Embodiment Construction

[0014] The infrared analog detector of the present invention is divided into two parts: hardware architecture and software control. In the hardware architecture, the central processing unit is composed of DSP+FPGA chips, the data storage module is composed of SRAM chips, and the program execution module is composed of SDRAM and FLASH chips. The main interface and the A / D chip constitute the external drive signal receiving module, which includes the interface with the drive circuit of the infrared imaging electronic components, the bias voltage overvoltage monitoring module, the power-on sequence detection module, and the analog signal output module It includes a D / A chip that converts the digital signal output from the central processing unit into an analog signal and an amplifier circuit that enhances the signal. The software control part is a software console of the upper computer, and the instructions of the upper computer are directly sent to the central computer through the...

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Abstract

The invention discloses an infrared analog detector and a method thereof. The infrared analog detector comprises a hardware framework and a software control part. A central processing unit comprises a DSP(digital signal processor) and an FPGA (field programmable gate array); a data storage module comprises an SRAM (static random access memory); a program executing module comprises an SDRAM (synchronous dynamic random access memory) and an FLASH chip; an external drive signal receiving module comprises an external total interface and an A/D chip, and further comprises an interface for connecting the drive circuit of an infrared imaging electronic component, as well as an offset over-voltage monitoring module and an electrifying sequential detection module; an analog signal output module comprises a D/A chip for converting digital signals output by the central processing unit into analog signals and an amplification circuit for signal amplification; and the software control part is a software console for a host computer and is used for sending the instruction of the host computer directly to the central processing unit through a serial port command, so as to correct various model parameters and functional parameters of the analog detector. The invention has the advantage that the format of an output image as well as the proportion of various image characteristics in the analog detector can be selected freely.

Description

technical field [0001] The invention belongs to the technical field of infrared thermal imaging, in particular to an infrared analog detector and a design method thereof. Background technique [0002] The staring cooling infrared focal plane detector is a kind of infrared detector which is widely and rapidly used and developed at present. It has the advantages of high sensitivity and small temperature difference, and is an extremely important infrared detection device for both military and civilian purposes. At present, the most mainstream staring cooling detector material is HgCdTe material, which has the highest detection rate according to the current use situation, but it also has its own manufacturing technical difficulties. The biggest problem is that in the growth process of the focal plane film, it is difficult to control the composition of the elements in the HgCdTe material. At the same time, the choice of the growth method of the film also determines the existence...

Claims

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Application Information

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IPC IPC(8): G01J5/00
Inventor 陈钱刘宁顾国华隋修宝左超季尔优钱惟贤何伟基张闻文路东明于雪莲毛义伟王士绅樊晓青张桥舟
Owner NANJING UNIV OF SCI & TECH
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