CN103248833B

CN103248833B - The large area array CCD imaging system of modularization high frame rate

Info

Publication number: CN103248833B
Application number: CN201310138164.6A
Authority: CN
Inventors: 张达
Original assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Current assignee: Changchun Institute of Optics Fine Mechanics and Physics of CAS
Priority date: 2013-04-19
Filing date: 2013-04-19
Publication date: 2015-12-09
Anticipated expiration: 2033-04-19
Also published as: CN103248833A

Abstract

The large area array CCD imaging system of modular high frame rate, belong to CCD technical field of imaging, for solving the problem of existing area array CCD imaging system poor universality, complex interfaces, expandability difference, this system has three modules and adopts laminated construction combination, the pre-amplification module in CCD front end receives the drive singal and biased, power supply that CCD drives and bias supply module exports, and exports analog video signal simultaneously and controls and processing module to CCD; CCD driven unit and bias supply module receive clock signal and the power reference of CCD control and processing module, provide the pre-amplification module in CCD front end to export to the multichannel analog video signal interface of CCD control and processing module simultaneously; CCD controls and processing module and external control platform carry out transfer of data and Communication Control, receives the multichannel analog vision signal from the pre-amplification module in CCD front end inputted by CCD driven unit and the switching of bias supply module simultaneously.

Description

The large area array CCD imaging system of modularization high frame rate

Technical field

The present invention relates to the large area array CCD imaging system of a kind of modularization high frame rate, belong to CCD technical field of imaging.

Background technology

The large area array CCD imaging system of high frame rate is widely used in Aeronautics and Astronautics field such as spectral remote sensing, mapping generaI investigation, environmental monitoring etc.For in the large area array CCD imaging applications of high frame rate, existing area array CCD imaging system version, as shown in Figure 1, by front end spatial limitation, the multiple output of area array CCD is by putting the rear analog video signal exported of conditioning in advance by many co-axial cables transport to A/D converter, multidiameter delay digital signal is become respectively through multiple A/D converter, through controlling and forming parallel data stream after data processing unit integration, pass interface by number and adopt multichannel LVDS cable to export with parallel LVDS or Cameralink interface shape.The multi-channel drive signal that CCD needs adopts multichannel twisted signal cable to export CCD to by driver element.The interconnected complexity of existing area array CCD imaging system, cable are various, volume power consumption is comparatively large, and different application needs brand-new design according to demand.For the large area array CCD imaging applications of high frame rate, above-mentioned shortcoming is more outstanding.Along with improving constantly of remote sensing application index, actual needs cannot be met, modularization, integrated be the developing direction of current association area, correspondingly also just require that the large area array CCD imaging system of high frame rate has modularization, integrated, miniaturized feature, flexibility easy to use, versatility and convertibility.

Summary of the invention

The present invention is the interconnected complexity of the existing area array CCD imaging system of solution, cable is various, volume power consumption is comparatively large, and different application needs the problem of brand-new design according to demand, provides the large area array CCD imaging system of modularization high frame rate.

The large area array CCD imaging system of modular high frame rate, this system comprises the pre-amplification module in CCD front end, CCD driving and bias supply module and CCD controls and processing module;

Three modules adopt laminated construction combination, form stereochemical structure;

The pre-amplification module in CCD front end receives the drive singal and biased, power supply that CCD drives and bias supply module exports, and exports analog video signal simultaneously and controls and processing module to CCD; CCD driven unit and bias supply module receive clock signal and the power reference of CCD control and processing module, provide the pre-amplification module in CCD front end to export to the multichannel analog video signal interface of CCD control and processing module simultaneously; CCD controls and processing module and external control platform carry out transfer of data and Communication Control, receives the multichannel analog vision signal from the pre-amplification module in CCD front end inputted by CCD driven unit and the switching of bias supply module simultaneously.

Accompanying drawing explanation

Fig. 1 is the structured flowchart of existing area array CCD imaging system.

Fig. 2 is the structured flowchart of the large area array CCD imaging system of modularization high frame rate of the present invention.

Fig. 3 is each module of the large area array CCD imaging system of modularization high frame rate of the present invention and the signal flow graph of a relation of functional unit.

Embodiment

Below in conjunction with accompanying drawing, the present invention is described in further details.

As shown in Figure 2, the large area array CCD imaging system of modularization high frame rate of the present invention controls and processing module three module compositions primarily of the pre-amplification module in CCD front end, CCD driving and bias supply module and CCD, and three modules adopt stacked system to be interconnected by connector and are combined to form stereochemical structure.Each module is convenient to change and upgrading as required.

As shown in Figure 3, the every association of mutual between the two of three modules that modularization high frame rate area array CCD imaging system of the present invention comprises, the pre-amplification module in CCD front end receives the drive singal and supply voltage that CCD drives and bias supply module provides, and exports analog video signal simultaneously and controls and processing module to CCD; CCD driven unit and bias supply module receive clock signal and the power reference of CCD control and processing module, provide the pre-amplification module in CCD front end to export to the multichannel analog video signal interface of CCD control and processing module simultaneously; CCD controls and processing module and external control platform carry out transfer of data and Communication Control, receives the multichannel analog vision signal from the pre-amplification module in CCD front end inputted by CCD driven unit and the switching of bias supply module simultaneously.

The pre-amplification module in CCD front end is put assembly in advance by high frame rate area array CCD and front end and is formed, CCD drives and bias supply module is made up of CCD driven unit and bias supply assembly, CCD controls and processing module is made up of sequencing control and interface module and video frequency signal processing assembly (multichannel input), and wherein sequencing control and interface module are partly made up of FPGA, power interface, optical fiber interface, Cameralink interface, control interface and input/output interface etc.Each assembly adopts the design of MCM Integration ofTechnology.

The signal flow of each inside modules assembly of the large area array CCD imaging system of modularization high frame rate is:

In the pre-amplification module in CCD front end, the CCD drive singal that the large area array CCD of high frame rate exports for receiving CCD driven unit, receives the various bias supplies that bias supply assembly provides; The preposition analog video signal put assembly reception high frame rate area array CCD in advance and export, export CCD control and processing module to through the multichannel analog video signal interface of CCD driving and bias supply module after coupling amplification, receive the power supply that bias supply assembly provides simultaneously.

CCD drives and in bias supply module, CCD driven unit receives the clock signal of sequencing control and interface module generation, produces the drive singal having specific voltage biased export the large area array CCD of high frame rate to by driving conversion; Bias supply assembly receives the power reference that sequencing control and interface module export, and provides the large area array CCD of high frame rate, CCD driven unit, front end puts bias supply needed for assembly in advance and power supply;

CCD controls and in processing module, the FPGA of sequencing control and interface module produces the work schedule signal of the large area array CCD signal of high frame rate, sends to CCD driven unit; Simultaneously can be received with LVDS form by input/output interface with parametric controller as required or export synchronous, triggering signal; Sequencing control and interface module export control signal to analog video signal processing components (multichannel input) by FPGA, receive the serial image data that analog video signal processing components produces, and exchange controling parameters with analog video signal processing components, complete integration and the format packing of view data.By the view data after optical fiber and Cameralink interface two kinds of mode output processing to parametric controller.Communication Control and telemetry parameter transmission is carried out by RS422 mode by control interface and external control platform.Power interface provides power reference to bias supply assembly.Analog video signal processing components (multichannel input) receives the area array CCD multichannel analog vision signal of input, export to the FPGA of sequencing control and interface module after carrying out analog/digital conversion formation digital quantity with serial data form, carry out controling parameters transmission with FPGA simultaneously.

Claims

1. the large area array CCD imaging system of modularization high frame rate, this system comprises the pre-amplification module in CCD front end, CCD driving and bias supply module and CCD controls and processing module, it is characterized in that,

Described three modules adopt laminated construction combination, form stereochemical structure;

The pre-amplification module in CCD front end receives the drive singal and biased, power supply that CCD drives and bias supply module exports, and exports analog video signal simultaneously and controls and processing module to CCD; CCD driving and bias supply module receive clock signal and the power reference of CCD control and processing module, provide the pre-amplification module in CCD front end to export to the multichannel analog video signal interface of CCD control and processing module simultaneously; CCD controls and processing module and external control platform carry out transfer of data and Communication Control, receives to be driven by CCD and bias supply module is transferred the multichannel analog vision signal from the pre-amplification module in CCD front end inputted simultaneously;

In the pre-amplification module in CCD front end, the large area array CCD of high frame rate receives the CCD drive singal that CCD driven unit exports, and receives the bias supply that bias supply assembly provides; The preposition analog video signal put assembly reception high frame rate area array CCD in advance and export, export CCD control and processing module to through the multichannel analog video signal interface of CCD driving and bias supply module after coupling amplification, receive the power supply that bias supply assembly provides simultaneously;

CCD drives and in bias supply module, CCD driven unit receives the clock signal of sequencing control and interface module generation, produces the drive singal having specific voltage biased export the large area array CCD of high frame rate to by driving conversion; Bias supply assembly receives the power reference that sequencing control and interface module export, and provides the large area array CCD of high frame rate, CCD driven unit, prepositionly puts bias supply needed for assembly and power supply in advance;

CCD controls and in processing module, the FPGA of sequencing control and interface module produces the work schedule signal of the large area array CCD signal of high frame rate, sends to CCD driven unit; Simultaneously can be received with LVDS form by input/output interface with parametric controller as required or export synchronous, triggering signal; Sequencing control and interface module export control signal to analog video signal processing components by FPGA, receive the serial image data that analog video signal processing components produces, and exchange controling parameters with analog video signal processing components; By the view data after optical fiber and Cameralink interface two kinds of mode output processing to parametric controller; Communication Control and telemetry parameter transmission is carried out by control interface and parametric controller; Power interface provides power reference to bias supply assembly; Analog video signal processing components receives the area array CCD multichannel analog vision signal of input, exports to the FPGA of sequencing control and interface module, carry out controling parameters transmission simultaneously with FPGA after carrying out analog/digital conversion formation digital quantity with serial data form.

2. the large area array CCD imaging system of modularization high frame rate according to claim 1, is characterized in that, each assembly in three modules adopts the design of MCM Integration ofTechnology.