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Infrared focal plane analog front-end circuit

An analog front-end circuit, infrared focal plane technology, applied in the field of infrared detection, can solve the problems of increasing power consumption and cost, and achieve the effect of quantitative temperature change and linear temperature change

Inactive Publication Date: 2015-11-18
XIAN TRANSETERNAL ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Normally, we use semiconductor coolers to provide a relatively constant ambient temperature. However, the introduction of semiconductor coolers increases additional power consumption and cost

Method used

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Embodiment Construction

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below, obviously, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] The invention discloses an infrared focal plane analog front-end circuit, please refer to figure 1 and figure 2 , the infrared focal plane analog front-end circuit 1 includes an electrically connected infrared detection array 11, a reference pixel 12, an integrator 13 and a control module circuit 14, wherein the infrared detection array 11 includes a photosensitive pixel resistor 111, and the The reference pixel 12 includes a blind pixel resistor 121 .

[0018] The control module circuit 14 includes a current mi...

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Abstract

The invention provides an infrared focal plane analog front-end circuit. The circuit includes a control module circuit. The control module circuit includes a current mirror and a bias unit. The bias unit is used for controlling the initial current of the infrared focal plane analog front-end circuit. The initial current of the infrared focal plane analog front-end circuit will no longer be decided by resistance influenced by ambient temperature, and installation of a semiconductor cooler is not necessary.

Description

technical field [0001] The invention belongs to the technical field of infrared detection, in particular to an infrared focal plane analog front-end circuit Background technique [0002] Infrared focal plane is the current mainstream infrared detection technology. Specifically, it can be divided into two types: cooled and uncooled. The former is based on the photoelectric effect, and realizes temperature measurement by detecting the number of carriers excited by electromagnetic radiation; the latter directly converts the absorbed electromagnetic radiation into a certain basic property of the material, such as the change of resistance, which can be measured by measuring the change of resistance value Realize temperature measurement. The latter is mainly designed based on the vanadium oxide thermal radiation meter, which directly converts the absorbed electromagnetic radiation into a certain basic property of the material, such as the change of resistance, and temperature mea...

Claims

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Application Information

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IPC IPC(8): G01J5/24
Inventor 吕坚
Owner XIAN TRANSETERNAL ELECTRONICS
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