CN205510214U

CN205510214U - But reconfiguration bus interface's CCD camera

Info

Publication number: CN205510214U
Application number: CN201620225472.1U
Authority: CN
Inventors: 徐晓明; 孔玲玲; 刘恺
Original assignee: Huahe New Technology Development Co Research Institute of Physical and Chemical Engineering of Nuclear Industry
Current assignee: Research Institute of Physical and Chemical Engineering of Nuclear Industry
Priority date: 2016-03-23
Filing date: 2016-03-23
Publication date: 2016-08-24
Anticipated expiration: 2026-03-23

Abstract

The utility model discloses a but reconfiguration bus interface's CCD camera, including image acquisition unit, image processing unit, the control unit and bus interface unit, through electric signal connection between each unit, the image acquisition unit includes camera lens subassembly, CCD image sensor, drive circuit and CCD signal processor, CCD image sensor respectively with drive circuit and CCD signal processor electricity signal connection, image processing unit includes FPGA and SDRAM, the control unit adopts STM32F407IE, the bus interface unit includes ethernet interface, USB interface, RS485 interface, CAN interface, RS232 interface and each bus hardware mechanical interface. The utility model discloses a bus interface's the reconfiguration and the selection of bus agreement have improved the convenience that the CCD camera was used under multiple scene, overcome the shortcoming that the communication interface part need repeatedly design among the prior art, work load is big, and the treatment effeciency of CCD camera is high.

Description

A kind of CCD camera of reconfigurable EBI

Technical field

This utility model belongs to a kind of Machine Vision Detection, is specifically related to the CCD phase of a kind of reconfigurable EBI Machine.

Background technology

Along with the development of machine vision technique, with CCD(charge coupled devic, charge-coupled image sensor) be The vision detection technology of core has the most gradually been dissolved in the middle of all conglomeraties such as industry, medical treatment, robot.In many excellences In detecting system, systematic function whether superior it is crucial that see correctness that the real-time of image acquisition, image algorithm process, be The integrity of system function.

But, when these fields are applied, due to requirement and the difference of application scenarios of system, the detection used In system, the particularly EBI of CCD camera is the most also not quite similar, and this allows for many close application scenarios often Meet different communication interfaces and communication interface part is redesigned.

The design of these communication interface parts mainly includes PCB(Printed Circuit Board, printed circuit board) and soft Part, when carrying out the design of these communication interface parts, not only workload can strengthen, and often duplicates the phenomenon of design, In turn result in the versatility of CCD camera in detecting system poor.

Utility model content

This utility model proposes to overcome shortcoming present in prior art, its objective is to provide one to weigh The CCD camera of newly configured EBI.

This utility model is realized by techniques below scheme:

The CCD camera of a kind of reconfigurable EBI, including image acquisition units, graphics processing unit, control list Unit and Bus Interface Unit, connected by the signal of telecommunication between each unit；Described image acquisition units includes lens assembly, CCD Imageing sensor, drive circuit and ccd signal processor, ccd image sensor respectively with drive circuit and ccd signal processor The signal of telecommunication connects；Described graphics processing unit includes FPGA and SDRAM；Described control unit uses STM32F407IE；Institute The Bus Interface Unit stated includes Ethernet interface, USB interface, RS485 interface, CAN interface, RS232 interface and each bus Hardware mechanical interface.

Described drive circuit includes voltage conversion circuit and the signal amplification circuit being made up of operational amplifier.

The model of described ccd signal processor is AD9846.

This utility model beneficial effect:

This utility model is by realizing the CCD camera that EBI can heavily be joined, and improve CCD camera should under several scenes Convenience, reconfigure the selection with bus protocol by EBI, dramatically reduce vision detection system and set In meter, the repeated design work of communication interface part, enhances the versatility of CCD camera.Graphics processing unit FPGA utilizes different Step FIFO and Peripheral storage SDRAM complete the data communication of image acquisition units and control in real time, not only accelerate data letter The speed of number transmission, the more convenient control to image acquisition, improve ability to work and the treatment effeciency of CCD camera.

Accompanying drawing explanation

Fig. 1 is structured flowchart of the present utility model；

Fig. 2 is workflow diagram of the present utility model.

In figure:

1 image acquisition units 2 graphics processing unit

3 control unit 4 Bus Interface Units

5 lens assembly 6 ccd image sensors

7 drive circuit 8 ccd signal processors

9 FPGA 10 SDRAM

11 STM32F407IE 12 Ethernet interfaces

13 usb 14 RS485 interfaces

15 CAN interface 16 RS232 interfaces

17 each bus hardware mechanical interfaces.

Detailed description of the invention

Below, referring to the drawings and the CCD camera of a kind of reconfigurable EBI of the present utility model is entered by embodiment Row describes in detail:

As it is shown in figure 1, the CCD camera of a kind of reconfigurable EBI, including image acquisition units 1, image procossing Unit 2, control unit 3 and Bus Interface Unit 4, connected by the signal of telecommunication between each unit.

Wherein, image acquisition units 1 includes that lens assembly 5, ccd image sensor 6, drive circuit 7 and ccd signal process Device 8；Ccd image sensor 6 is connected with drive circuit 7 and ccd signal processor 8 signal of telecommunication respectively, i.e. drive circuit 7 produces Driving signal to deliver to ccd image sensor 6, the picture output signal transmission that ccd image sensor 6 produces processes to ccd signal Device 8, thus obtain the image that Real-time Collection arrives；

Graphics processing unit 2 includes FPGA(Field Programmable Gate Array, field programmable gate array) 9 and SDRAM(Synchronous Dynamic Random Access Memory, synchronous DRAM) 10, this list Unit's application image Processing Algorithm, processes the realtime image data collected.Specifically: by total line traffic control in this unit The methods such as system, sequential generation, synchronizing signal, asynchronous FIFO (First In First Out, push-up storage) are just realizing True image acquisition, and the information obtained is stored in outer memory module, complete at required algorithm finally by algoritic module Reason.

The image processing algorithm of described graphics processing unit 2 includes the reconstruct of the denoising of image ccd image, filtering, image And the operation such as the extraction of characteristics of image.

Control unit 3 uses STM32F407IE 11, is with ARM(Random Access Memory, and dynamic random stores Device) it is the microcontroller (Microcontroller Unit) of core, controlled by STM32F407IE 11 according to configuration parameter The work of CCD camera processed, connects various EBI and selects different bus agreement according to configuration order.Major function includes:

A () is attached with the interlock circuit of each EBI；

B (), according to configuration order, selects to perform different bus protocols；

C () resolves camera configuration parameter, such as: CCD rate of scanning, gain setting, white balance correction etc., and be sent to figure As processing unit, and then control FPGA 9 drives ccd image sensor 6 to be operated.

Bus Interface Unit 4 includes Ethernet interface 12, usb 13, RS485 interface 14, CAN interface 15, RS232 Interface 16, each bus hardware mechanical interface 17.Its effect is the control parameter receiving camera, the view data that transmission obtains.

Drive circuit 7 includes voltage conversion circuit and the signal amplification circuit being made up of operational amplifier, is mainly used to produce Pulse signal required during raw CCD camera work, such as: clock pulse signal, transfer pulse signal, reseting pulse signal, pincers Digit pulse signal etc..

The model that described ccd signal processor 8 uses is AD9846.

Ethernet interface 12 in Bus Interface Unit 4, usb 13, RS485 interface 14, CAN interface 15, RS232 Interface 16 is standard interface.

EBI and corresponding bus protocol all can carry out freely configuring and choosing according to application scenarios, and then expand The application scenario of CCD camera and ease of use.

As in figure 2 it is shown, workflow of the present utility model is:

() initial configuration

In the controls, send configuration order by man machine interface to CCD camera, including bus configuration order, camera Configuration parameter etc., S1；

() bus configuration

STM32F407IE 11 in control unit 3 carries out bus selection according to configuration order, and configures bus parameter, as The baud rate of CAN interface, and perform corresponding bus protocol program, such as CANOPEN agreement etc., S2；

() camera parameter configures

STM32F407IE 11 in control unit 3 resolves camera configuration parameter, including camera scanning frequency, gain ginseng Number, white balance configuration parameter etc., S3；

() camera starts

Relevant configured parameter is sent to the FPGA 9 of graphics processing unit 2 by the STM32F407IE 11 in control unit 3 Module, controls CCD camera, and sensor starts to gather image, S4；

() image procossing

FPGA 9 module in graphics processing unit 2 passes through denoising, filtering, the reconstruct of image, and the extraction of characteristics of image Image is processed by scheduling algorithm, S5；

() result is uploaded

Image after process, and data result transmission is to the STM32F407IE 11 in control unit 3, through related protocol The processing module in detecting system, S6 is delivered to after coding.

This utility model reconfigures the selection with bus protocol by EBI, improves CCD camera multiple The convenience of application under scene, overcomes the shortcoming that communication interface part in prior art needs repeatability design, workload is big, The treatment effeciency of CCD camera is high.

Claims

1. the CCD camera of a reconfigurable EBI, it is characterised in that: include image acquisition units (1), image procossing Unit (2), control unit (3) and Bus Interface Unit (4), connected by the signal of telecommunication between each unit；Described image acquisition Unit (1) includes lens assembly (5), ccd image sensor (6), drive circuit (7) and ccd signal processor (8), ccd image Sensor (6) is connected with drive circuit (7) and ccd signal processor (8) signal of telecommunication respectively；Described graphics processing unit (2) Including FPGA(9) and SDRAM(10)；Described control unit (3) uses STM32F407IE(11)；Described EBI list Unit (4) includes Ethernet interface (12), USB interface (13), RS485 interface (14), CAN interface (15), RS232 interface (16) With each bus hardware mechanical interface (17).

The CCD camera of reconfigurable EBI the most according to claim 1, it is characterised in that: described driving electricity Road (7) includes voltage conversion circuit and the signal amplification circuit being made up of operational amplifier.

The CCD camera of reconfigurable EBI the most according to claim 1, it is characterised in that: at described ccd signal The model that reason device (8) uses is AD9846.