基于USB的视频采集系统的设计和实现
|
摘要
数据采集是很多领域广泛采用的技术,随着对采集数据量、采集精度和传输速度的要求越来越高,传统的采集方式已经严重阻碍了数据采集设备的发展。而新一代通用串行总线(Universal Serial Bus,简称USB)具有传输线少、速度快、支持热插拔以及易于扩展等优点,很好地解决了以上问题,因此在数据采集应用中得到了广泛的应用。
论文课题在深入分析和探讨了USB2.0协议的基础上,以福华FS7805控制芯片为核心,设计和实现了基于USB的视频采集传输系统,该系统具备基于USB的批量与控制两种传输方式。
论文完整地总结了课题研究的整个过程,取得的成果概括如下:
1.在分析了USB总线的体系结构和特点的基础上确定了系统的整体框架和各个部分芯片的选择。整个系统包括硬件设计和软件设计两部分,实现视频数据高速转换、采集和数据显示功能。
2.在分析各关键元件详细接口和参数的基础上,完成了电源电路、接口电路和外部辅助电路的硬件设计。系统硬件部分实现视频数据采集功能,并将采集的数据送至USB控制器,再通过USB接口将数据传送给PC机。
3.在硬件设计的基础上,完成了USB固件程序、设备的驱动程序和上位应用程序的系统软件设计。USB固件程序实现对USB控制芯片与外部采集芯片的初始化,设备驱动程序为上位应用程序提供了软件和硬件平台连接的通道,上位应用程序实现采集数据的接收与图像显示。
课题的研究对于拓展FameG FS7805芯片的应用领域具有一定促进作用,并且对于基于USB 2.0的同类嵌入式系统的开发提供了一定的参考。
Data acquisition technology is used in lots of manufacture occasion. With the acquisition of data, accuracy and speed acquisition of increasingly high demands. Traditional acquisition style is strongly restricted the development of data acquisition devices. New generation Universal Serial Bus has the advantages of small transmission line, quick transmitting rate, sustaining hot-plug and pull. Easy extensibility and so on which solved the problems of traditional communications style well. So Universal Serial Bus technology gains wide applications in the data acquisition applications.
In this paper, based on deeply analyzing of USB2.0 protocol, which built up the video system for data acquisition and transmission with FameG FS7805 control chip. And the bulk and control were carried out in this system respectively.
Papers summed up the whole process of research, the results can be summarized as follows:
1. In the analysis of the USB bus architecture and determined on the basis of the characteristics of the system and the overall framework of various parts of the chip choice. The whole system contains two parts that are hardware design and software design. It realizes functions of data acquisition, data transition and data display.
2. In a detailed analysis of the key components of interfaces and parameters on the basis of completion of the power supply circuit, interface circuit and external auxiliary circuit hardware design. The hardware of the system realizes video data acquisition function, which sends data to the USB controller, and then USB controller sends data to PC by USB interface.
3. On the basis of hardware design realized USB firmware program, device driver program and the user program. The USB firmware program realizing the initialization of USB controller and Acquisition chip. The device driver program provides the channel to the software and the hardware platform for the user program. The user program realizes the data receiving and displaying functions.
Research projects in the developing FameG FS7805 chip for the applications have some role. And USB 2.0-based embedded system development similar to provide a certain amount of reference.
论文课题在深入分析和探讨了USB2.0协议的基础上,以福华FS7805控制芯片为核心,设计和实现了基于USB的视频采集传输系统,该系统具备基于USB的批量与控制两种传输方式。
论文完整地总结了课题研究的整个过程,取得的成果概括如下:
1.在分析了USB总线的体系结构和特点的基础上确定了系统的整体框架和各个部分芯片的选择。整个系统包括硬件设计和软件设计两部分,实现视频数据高速转换、采集和数据显示功能。
2.在分析各关键元件详细接口和参数的基础上,完成了电源电路、接口电路和外部辅助电路的硬件设计。系统硬件部分实现视频数据采集功能,并将采集的数据送至USB控制器,再通过USB接口将数据传送给PC机。
3.在硬件设计的基础上,完成了USB固件程序、设备的驱动程序和上位应用程序的系统软件设计。USB固件程序实现对USB控制芯片与外部采集芯片的初始化,设备驱动程序为上位应用程序提供了软件和硬件平台连接的通道,上位应用程序实现采集数据的接收与图像显示。
课题的研究对于拓展FameG FS7805芯片的应用领域具有一定促进作用,并且对于基于USB 2.0的同类嵌入式系统的开发提供了一定的参考。
Data acquisition technology is used in lots of manufacture occasion. With the acquisition of data, accuracy and speed acquisition of increasingly high demands. Traditional acquisition style is strongly restricted the development of data acquisition devices. New generation Universal Serial Bus has the advantages of small transmission line, quick transmitting rate, sustaining hot-plug and pull. Easy extensibility and so on which solved the problems of traditional communications style well. So Universal Serial Bus technology gains wide applications in the data acquisition applications.
In this paper, based on deeply analyzing of USB2.0 protocol, which built up the video system for data acquisition and transmission with FameG FS7805 control chip. And the bulk and control were carried out in this system respectively.
Papers summed up the whole process of research, the results can be summarized as follows:
1. In the analysis of the USB bus architecture and determined on the basis of the characteristics of the system and the overall framework of various parts of the chip choice. The whole system contains two parts that are hardware design and software design. It realizes functions of data acquisition, data transition and data display.
2. In a detailed analysis of the key components of interfaces and parameters on the basis of completion of the power supply circuit, interface circuit and external auxiliary circuit hardware design. The hardware of the system realizes video data acquisition function, which sends data to the USB controller, and then USB controller sends data to PC by USB interface.
3. On the basis of hardware design realized USB firmware program, device driver program and the user program. The USB firmware program realizing the initialization of USB controller and Acquisition chip. The device driver program provides the channel to the software and the hardware platform for the user program. The user program realizes the data receiving and displaying functions.
Research projects in the developing FameG FS7805 chip for the applications have some role. And USB 2.0-based embedded system development similar to provide a certain amount of reference.
引文
[1].杨波,刘延波.具有USB2.0接口的高速数据采集卡设计[J].单片机与嵌入式系统应用. 2004,(4):53-56
[2].夏益民,王光君.基于USB的高速数据采集系统[J].国外电子元器件, 2003,(10):20-23
[3].边海龙,贾少华. USB2.0设备的设计与开发[M].北京:人民邮电出版社. 2004
[4].马伟.计算机USB系统原理及其主/从机设计[M].北京:北京航空航天大学出版社. 2004
[5].许永和. 8051单片机USB接口程序设计[M].北京:北京航空航天大学出版社. 2004
[6].王宜怀,刘晓升.嵌入式应用技术基础教程[M].北京:清华大学出版社. 2005
[7].谢兰英.基于USB数据采集系统的研究与设计[D].武汉理工大学硕士学位论文. 2007
[8].武刚.基于USB数据采集的系统设计[D].西北工业大学硕士学位论文. 2007
[9]. Universal Serial Bus Specification[S], Revision 2.0.2000.
[10].杰诚文化.编著精通Protel DXP入门提高篇[M]北京:中国青年出版社. 2005.
[11]. FASP-7805 User Manual[S] V1.2.2007
[12]. P03130R0 1/3.3 Inch SXGA Single Chip CMOS IMAGE SENSOR[S] Rev0.2 10.Aug.2005
[13].尹勇,王洪成.单片机开发环境uVsion使用指南及USB固件编程与调试(第一版)[M].北京:北京航空航天大学出版社. 2004
[14]. FS7805 Memory Map and Register[Z] V1.0 Mar29.2007
[15]. Cypress Semiconductor Corporation.EZ-USB FX2 Technical Reference Manual V2.1.2001
[16]. Cypress Semiconductor Corporation Data through Isochronous/BulkEndpoints on EZ-USB FX2.
[17].谭浩强. C程序设计(第二版)[M].北京:清华大学出版社. 1999
[18].周航慈.单片机应用程序设计技术[M].北京:北京航空航天大学出版社. 2002
[19]. (美)Chris Cant著孙义马莉波国雪飞等译Windows WDM设备驱动程序开发指南[M].北京:机械工业出版社. 2005
[20]. Microsoft公司. Window2000驱动程序开发手册(影印版)[M].北京:北京大学出版社. 2001
[21]. http://www.driverdevelop.com.驱动开发网[Z].
[22]. http://www.usb.org. USB开发者论坛[Z].
[23].潘建兵.基于USB总线的数据采集器的研制[D].武汉大学硕士学位论文. 2006
[24].何立民.单片机应用技术选编[M].北京:北京航空航天大学出版社. 2000
[2].夏益民,王光君.基于USB的高速数据采集系统[J].国外电子元器件, 2003,(10):20-23
[3].边海龙,贾少华. USB2.0设备的设计与开发[M].北京:人民邮电出版社. 2004
[4].马伟.计算机USB系统原理及其主/从机设计[M].北京:北京航空航天大学出版社. 2004
[5].许永和. 8051单片机USB接口程序设计[M].北京:北京航空航天大学出版社. 2004
[6].王宜怀,刘晓升.嵌入式应用技术基础教程[M].北京:清华大学出版社. 2005
[7].谢兰英.基于USB数据采集系统的研究与设计[D].武汉理工大学硕士学位论文. 2007
[8].武刚.基于USB数据采集的系统设计[D].西北工业大学硕士学位论文. 2007
[9]. Universal Serial Bus Specification[S], Revision 2.0.2000.
[10].杰诚文化.编著精通Protel DXP入门提高篇[M]北京:中国青年出版社. 2005.
[11]. FASP-7805 User Manual[S] V1.2.2007
[12]. P03130R0 1/3.3 Inch SXGA Single Chip CMOS IMAGE SENSOR[S] Rev0.2 10.Aug.2005
[13].尹勇,王洪成.单片机开发环境uVsion使用指南及USB固件编程与调试(第一版)[M].北京:北京航空航天大学出版社. 2004
[14]. FS7805 Memory Map and Register[Z] V1.0 Mar29.2007
[15]. Cypress Semiconductor Corporation.EZ-USB FX2 Technical Reference Manual V2.1.2001
[16]. Cypress Semiconductor Corporation Data through Isochronous/BulkEndpoints on EZ-USB FX2.
[17].谭浩强. C程序设计(第二版)[M].北京:清华大学出版社. 1999
[18].周航慈.单片机应用程序设计技术[M].北京:北京航空航天大学出版社. 2002
[19]. (美)Chris Cant著孙义马莉波国雪飞等译Windows WDM设备驱动程序开发指南[M].北京:机械工业出版社. 2005
[20]. Microsoft公司. Window2000驱动程序开发手册(影印版)[M].北京:北京大学出版社. 2001
[21]. http://www.driverdevelop.com.驱动开发网[Z].
[22]. http://www.usb.org. USB开发者论坛[Z].
[23].潘建兵.基于USB总线的数据采集器的研制[D].武汉大学硕士学位论文. 2006
[24].何立民.单片机应用技术选编[M].北京:北京航空航天大学出版社. 2000