CN110809154A

CN110809154A - Image verification system for infrared detector

Info

Publication number: CN110809154A
Application number: CN201911152409.4A
Authority: CN
Inventors: 张勇; 龚卫东
Original assignee: Jiangsu Dongfang Photoelectric Co Ltd
Current assignee: Jiangsu Dongfang Photoelectric Co Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-02-18

Abstract

The invention discloses an image verification system for an infrared detector, which comprises a hardware platform, wherein the hardware platform is provided with an FPGA chip, a level conversion chip, a power supply chip, a USB protocol chip, a shutter driving chip and a serial port chip, and the FPGA chip is respectively connected with the level conversion chip, the power supply chip, the USB protocol chip, the shutter driving chip and the serial port chip; when the invention verifies a plurality of detectors, the independent design is not needed, and the respective detector boards are directly inserted with the verification platform, thereby saving the cost; the development time of independent hardware is saved, if the image effect of the detector is not as expected, the detector can be directly not developed further, and the risk of final development failure can be effectively reduced.

Description

Image verification system for infrared detector

Technical Field

The invention relates to the technical field of infrared detectors, in particular to an image verification system for an infrared detector.

Background

An Infrared Detector (Infrared Detector) is a device that converts an incident Infrared radiation signal into an electrical signal and outputs the electrical signal. Infrared radiation is electromagnetic waves with wavelengths between visible and microwave, and is imperceptible to the human eye. To detect the presence of such radiation and measure its intensity, it must be converted into other physical quantities that can be detected and measured. In general, any effect caused by infrared radiation illuminating an object can be used to measure the intensity of the infrared radiation, provided that the effect is measurable and sensitive enough. The infrared thermal effect and the photoelectric effect are mainly utilized by the modern infrared detector. The output of these effects is largely electrical, or can be converted to electrical by suitable means.

At present, infrared detectors are various in types and are not compatible with each other. If the hardware design is individually designed for each detector in order to verify the image quality of each detector, not only the hardware cost is greatly increased, but also certain risks exist. If a detector image is not as expected, time and hardware costs are wasted. Therefore, improvements are needed.

Disclosure of Invention

The present invention is directed to an image verification system for an infrared detector, which solves the above problems in the related art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an image verification system for infrared detector, includes the hardware platform, be equipped with FPGA chip, level conversion chip, power chip, USB agreement chip, shutter driver chip, serial ports chip on the hardware platform, the FPGA chip is connected level conversion chip, power chip, USB agreement chip, shutter driver chip, serial ports chip respectively, level conversion chip connecting plate is to the board connector, USB agreement chip connection USB interface.

Preferably, the FPGA chip is further connected with an ADC chip, and the ADC chip is connected with the board-to-board connector through the operational amplifier module connecting board.

Preferably, the device further comprises an LRDDR2 module, a differential clock module, a single-ended clock module, a FLASH module and a video DA module, wherein the LRDDR2 module, the differential clock module, the single-ended clock module, the FLASH module and the video DA module are respectively connected with the FPGA chip, and the video DA module is connected with the SMA module.

Preferably, the FPGA chip is connected with a power supply adjusting module, the power supply adjusting module comprises a DA chip and a voltage follower, the DA chip is connected with the voltage follower, and the power supply adjusting module is respectively connected with the FPGA chip and the board-to-board connector.

Preferably, a JTAG interface is arranged on the hardware platform, and the JTAG interface is connected to the FPGA chip.

Preferably, the FPGA chip adopts Virtex-4 FX or Virtex-5 FX series chips.

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention can be compatible with the image output function of a plurality of detectors, can not need to singly design hardware for a certain detector, can shorten the research and development process, save the hardware cost and reduce the risk of project failure, and can also be used as a verification platform for the warehousing detection of the detectors.

(2) When the invention verifies a plurality of detectors, the independent design is not needed, and the respective detector boards are directly inserted with the verification platform, thereby saving the cost; the time for developing the independent hardware is saved, the time is saved, and the research and development period is shortened; if the image effect of the detector is not as expected, the detector can be directly developed without further development, and the risk of final development failure can be effectively reduced; the method can be used as a hardware platform for detector warehousing detection.

Drawings

FIG. 1 is a schematic block diagram of the system of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: an image verification system for an infrared detector comprises a hardware platform, wherein an FPGA chip 1, a level conversion chip 2, a power supply chip 3, a USB protocol chip 4, a shutter driving chip 5 and a serial port chip 6 are arranged on the hardware platform, and the FPGA chip 1 adopts a Virtex-4 FX or Virtex-5 FX series chip; the FPGA chip 1 is respectively connected with a level conversion chip 2, a power supply chip 3, a USB protocol chip 4, a shutter driving chip 5 and a serial port chip 6, the level conversion chip 2 is connected with a board-to-board connector 7, and the USB protocol chip 4 is connected with a USB interface 8; the FPGA chip 1 is also connected with an ADC chip 9, and the ADC chip 9 is connected with a board-to-board connector 7 through an operational amplifier module 10; the hardware platform is provided with a JTAG interface 20, and the JTAG interface 20 is connected with the FPGA chip 1.

The invention also comprises an LRDDR2 module 11, a differential clock module 12, a single-ended clock module 13, a FLASH module 14 and a video DA module 15, wherein the LRDDR2 module 11, the differential clock module 12, the single-ended clock module 13, the FLASH module 14 and the video DA module 15 are respectively connected with the FPGA chip 1, and the video DA module 15 is connected with the SMA module 16.

According to the invention, the FPGA chip 1 is connected with the power supply adjusting module 17, the power supply adjusting module 17 comprises a DA chip 18 and a voltage follower 19, the DA chip 18 is connected with the voltage follower 19, and the power supply adjusting module 17 is respectively connected with the FPGA chip 1 and the board-to-board connector 7. And selecting the DA chip and the voltage follower with the power supply higher than 11V. The power supply voltage can be controlled through the MCU, and the control range is 0-11V. The output current of the voltage follower can reach 50mA, and the power supply requirement of the detector can be met.

In the invention, a configuration bus of the detector adopts a mode of coexisting LVDS and single-ended signals; the single-ended signal uses 1.8V and 3.3V levels, and the LVDS signal can be split into a single-ended signal with a 2.5V level for use; aiming at the analog image signals output by the analog detector, an operational amplifier and ADC (LVDS output) chip with higher performance/index is used so as to be compatible with the image signals output by various detectors; for digital image signals output by a digital detector, multi-channel LVDS signals and multi-channel multi-level single-ended signals are adopted to be compatible with image signals output by a plurality of detectors.

When the invention verifies a plurality of detectors, the independent design is not needed, and the respective detector boards are directly inserted with the verification platform, thereby saving the cost; the time for developing the independent hardware is saved, the time is saved, and the research and development period is shortened; if the image effect of the detector is not as expected, the detector can be directly developed without further development, and the risk of final development failure can be effectively reduced; the method can be used as a hardware platform for detector warehousing detection.

In summary, the invention can be compatible with the image output function of multiple detectors, can avoid hardware design for a certain detector alone, can shorten the development process, save the hardware cost and reduce the risk of project failure, and can also be used as a verification platform for detector warehousing detection.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An image verification system for an infrared detector comprises a hardware platform and is characterized in that: the hardware platform is provided with an FPGA chip (1), a level conversion chip (2), a power chip (3), a USB protocol chip (4), a shutter driving chip (5) and a serial port chip (6), wherein the FPGA chip (1) is respectively connected with the level conversion chip (2), the power chip (3), the USB protocol chip (4), the shutter driving chip (5) and the serial port chip (6), the level conversion chip (2) is connected with a board connector (7), and the USB protocol chip (4) is connected with a USB interface (8).

2. An image authentication system for an infrared detector as set forth in claim 1, wherein: the FPGA chip (1) is further connected with an ADC chip (9), and the ADC chip (9) is connected with a board-to-board connector (7) through an operational amplifier module (10).

3. An image authentication system for an infrared detector as set forth in claim 1, wherein: the device is characterized by further comprising an LRDDR2 module (11), a differential clock module (12), a single-ended clock module (13), a FLASH module (14) and a video DA module (15), wherein the LRDDR2 module (11), the differential clock module (12), the single-ended clock module (13), the FLASH module (14) and the video DA module (15) are respectively connected with the FPGA chip (1), and the video DA module (15) is connected with the SMA module (16).

4. An image authentication system for an infrared detector as set forth in claim 1, wherein: FPGA chip (1) connects power regulation module (17), power regulation module (17) include DA chip (18) and voltage follower (19), voltage follower (19) are connected in DA chip (18), FPGA chip (1) and board to board connector (7) are connected respectively in power regulation module (17).

5. An image authentication system for an infrared detector as set forth in claim 1, wherein: the hardware platform is provided with a JTAG interface (20), and the JTAG interface (20) is connected with the FPGA chip (1).

6. An image authentication system for an infrared detector as set forth in claim 1, wherein: the FPGA chip (1) adopts Virtex-4 FX or Virtex-5 FX series chips.