Infrared camera front-end high-speed data acquisition method and system, and satellite-borne infrared camera

A high-speed data acquisition and infrared camera technology, which is applied to the parts of TV system, TV, optical device exploration, etc., can solve the problem of complex interface timing signal, bias voltage output analog interface, background characteristics of infrared camera that cannot be ignored, channels that cannot Carry out simple reuse and other issues to achieve the effect of avoiding repeated design and re-test verification, good scalability, and good scalability

Pending Publication Date: 2021-11-23
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The improvement of circuit capabilities is often accompanied by an increase in processors, power consumption, scale, and data throughput. For space infrared cameras with extremely limited space resources and power consumption resources, it is necessary to find a camera that meets the current data acquisition requirements and at the same time. It is extremely difficult to have a solution that can expand to a certain extent and meet the resource constraints of the space thermal environment
The demand for space remote sensing and the particularity of the application environment determine that it is impossible to directly increase the circuit scale and stack the peripheral test equipment to improve the capability as the ground test machine does; on the other hand, the unique background characteristics of the infrared camera cannot be ignored, and large The interfaces of large-scale infrared detectors include timing signals, bias voltages, output analog interfaces, etc. are relatively complex, and it is determined that the processing channels cannot be simply multiplexed. solution, critical for infrared cameras

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  • Infrared camera front-end high-speed data acquisition method and system, and satellite-borne infrared camera
  • Infrared camera front-end high-speed data acquisition method and system, and satellite-borne infrared camera
  • Infrared camera front-end high-speed data acquisition method and system, and satellite-borne infrared camera

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Embodiment 1

[0057] The present invention is based on the design steps of the satellite-borne 4000-yuan long-line infrared detector information acquisition and data acquisition system as follows.

[0058] The first step is based on the task-based module reuse design idea. Firstly, according to the size of the space infrared camera, power consumption resource constraints and data acquisition requirements, the data acquisition module configuration scheme is divided and formulated. A dual-band infrared camera with a 4,000 yuan infrared detector is used. The number of detector output channels is 32, and the two bands have a total of 64 channels. The readout frequency is 6MHz. Under the constraints of space resources, one configurable module is set to 64 channels, which can meet the data acquisition requirements; compared with two modules set to 32 channels, it can reduce power consumption; according to the readout frequency of the detector, the channel sampling rate is 6MSPS@16bit, the origina...

Embodiment 2

[0063] The present invention is based on the design steps of the satellite-borne 12,000-yuan long-line infrared detector information acquisition and data acquisition system as follows.

[0064] The first step, based on the task-based module reuse design idea, first divides and formulates the data acquisition module configuration scheme according to the size of the space infrared camera, power consumption resource constraints and data acquisition requirements. A single-band infrared camera with a 12,000 yuan infrared detector is used. The number of detector output channels is 96, and the readout frequency is 12MHz. Under the constraints of space resources, one configurable module is set to 64 channels, which can meet the data acquisition requirements; according to the readout frequency of the detector, the channel sampling rate is 12MSPS@16bit, and the original data rate is 18.4Gbps, each high-speed serial The transmission data rate of the line interface is set to 2Gbps, consid...

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Abstract

The invention belongs to the technical field of infrared information acquisition and processing, and discloses an infrared camera front-end high-speed data acquisition method and system and a satellite-borne infrared camera, wherein the infrared camera front-end high-speed data acquisition system comprises an infrared camera front-end data acquisition configurable module and a large-scale infrared detector; the infrared camera front section data acquisition configurable module comprises a multi-path analog signal conditioning module, a multi-path signal channel acquisition module, a time sequence control and data acquisition module, a multi-path high-speed data transmission module, a power supply module, a mechanical structure and a thermal control module. According to the invention, the problem that the scale of the infrared detector is continuously increased and the existing data acquisition architecture cannot adapt to the infrared detector can be effectively solved, the problems of continuous repeated design and re-test verification are avoided, and the requirements of high electromagnetic compatibility, low power consumption and circuit miniaturization on hundreds of paths of signals in infrared camera data acquisition are considered. Therefore, the resource contradiction between the super-large-scale infrared detector signal acquisition circuit scale and the platform is solved.

Description

technical field [0001] The invention belongs to the technical field of infrared information acquisition and processing, and in particular relates to an infrared camera front-end high-speed data acquisition method, a system, and a spaceborne infrared camera. Background technique [0002] At present, the core device of the modern infrared imaging system is the focal plane array (focal plane array FPA). The pursuit of high efficiency has further driven the rapid development of infrared focal plane devices in terms of performance, scale, and imaging speed. [0003] In recent years, with the development of infrared remote sensing technology, the scale of infrared detectors of space infrared cameras has expanded rapidly. At present, large-scale infrared linear array detectors or area array detectors have been gradually applied to space-borne infrared cameras at home and abroad. The size of the detector has reached more than 2,000 yuan, the size of a single area array detector has...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H04N5/268H04N5/33H04N5/765G01J5/10G01V8/10
CPCH04N5/268H04N5/33H04N5/765G01V8/10G01J5/10G01J2005/106
Inventor林长青周双喜孙胜利李璐芳喻琪超
OwnerSHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI