基于VI的仪器远程校准技术研究
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摘要
为了保证量值的统一,必须对仪器实施周期性校准。传统的仪器校准方式不但耗时而且校准成本也比较高,同时已校准的仪器从校准实验室返回到校准客户的传输过程中,仪器的状况是否和它在校准实验室时保持一样也难以保证。虽然现在开展的现场校准可以缩短校准时间,但它对实施现场校准人员的专业技能要求比较高,如果由专门校准人员进行现场校准,这样校准成本将会更高。这对那些要求实时校准并且校准成本适中的客户来说不能满足他们的要求,因此研究新的仪器校准技术具有重要的应用价值。
本论文研究了基于VI(虚拟仪器)的仪器远程校准技术,利用此技术校准人员能实时、异地、远程地控制某一仪器的校准全过程。本论文主要研究内容如下:
1.分析了基于PC机的虚拟仪器系统测量不确定度的来源,探讨了采用基于数值仿真的方法进行虚拟仪器不确定度计算。
2.研究了远程校准体系结构,提出C/S和B/S相结合的混合远程校准模式。利用ASP+ADO技术,对客户访问校准主页和校准数据库进行了设计;利用LabSQL+ADO技术,对校准实验室端的校准数据库管理进行了初步设计;对几种校准VI远程控制技术进行了比较分析,并利用VI Server和DataSocket相结合的技术对校准实验室端实现对校准VI远程控制和对远程测试数据实时共享进行了设计。
3.分析了远程校准过程中存在的风险,利用移动agent技术对待校准端的校准VI在校准过程中的安全性进行了设计。
4.对Modbus式仪器的远程校准进行了初步实验设计,在LabVIEW中实现了基于Modbus通信协议通信过程中待校准准端串口初始化、CRC-16、和RLC-8校验以及Modbus信息读写功能模块。
本文所建立的基于VI的仪器远程校准系统,与一般拥有数字接口的仪器互联性较强,用户可接入性比较好,使仪器校准的实时性增强、溯源或传递的时问缩短,校准的成本降低,采用移动agent技术使校准的安全性得到提高。因此,具有较高的工程应用价值。
In order to keep measurement traceability, instrument calibration must be executed periodically. The traditional method of instrument calibration is extensively time and resource consuming. At the same time it is dubious to maintain the state of the instrument that has been calibrated as the former state at the calibration laboratory when it returns to the calibration clients. Although the technology of on-site calibration applied at present time can reduce calibration time, it needs a calibration operator mastering specialty technology. Resource consuming will higher when a professor goes to the site for operating instrument calibration. These don't meet the requirement of these clients who require that instrument calibration is real time and moderate resource consuming. Thus it is very important to research new technology about instrument calibration.In this thesis, a remote instrument calibration technology based on VI(Virtual Instrument) is put forward. Calibration operator can control a calibration process real time and remotely by using mat technology. The main works of this thesis are as following:1. The resource of measurement uncertainty about VIs based on PC is discussed and it proposes to evaluate the measurement uncertainty of VIs by using numerical methods.2. The framework of remote calibration is researched and a mode using C/S combined with B/S is put forward. How to realize calibration client access to calibration homepage and calibration database is designed by using ASP combined with ADO. How to realize basically manage calibration database is also designed by using LabSQL combined with ADO at calibration laboratory. And some methods about how to realize remote control of calibration VI are discussed and compared. And how to realize that the calibration laboratory can control the calibration VI remotely and measurement data can be shared real time by using VI Server combined with DataSocket is designed.3. The risk in remote calibration is discussed and the security of calibration VI running in calibration client site is designed by using mobile agent.4.A remote calibration experiment about an instrument based on Modbus protocol is given. Modbus communication protocol is realized through labVIEW.The remote instrument calibration system based on VI set up in this thesis can
communicate with instruments embedded with communication interface conveniently and be accessed easy, enhance the quality of real-time calibration,short the time used to instrument traceability or transfer,reduce the consuming of calibration and improve the security by using mobile agent.
本论文研究了基于VI(虚拟仪器)的仪器远程校准技术,利用此技术校准人员能实时、异地、远程地控制某一仪器的校准全过程。本论文主要研究内容如下:
1.分析了基于PC机的虚拟仪器系统测量不确定度的来源,探讨了采用基于数值仿真的方法进行虚拟仪器不确定度计算。
2.研究了远程校准体系结构,提出C/S和B/S相结合的混合远程校准模式。利用ASP+ADO技术,对客户访问校准主页和校准数据库进行了设计;利用LabSQL+ADO技术,对校准实验室端的校准数据库管理进行了初步设计;对几种校准VI远程控制技术进行了比较分析,并利用VI Server和DataSocket相结合的技术对校准实验室端实现对校准VI远程控制和对远程测试数据实时共享进行了设计。
3.分析了远程校准过程中存在的风险,利用移动agent技术对待校准端的校准VI在校准过程中的安全性进行了设计。
4.对Modbus式仪器的远程校准进行了初步实验设计,在LabVIEW中实现了基于Modbus通信协议通信过程中待校准准端串口初始化、CRC-16、和RLC-8校验以及Modbus信息读写功能模块。
本文所建立的基于VI的仪器远程校准系统,与一般拥有数字接口的仪器互联性较强,用户可接入性比较好,使仪器校准的实时性增强、溯源或传递的时问缩短,校准的成本降低,采用移动agent技术使校准的安全性得到提高。因此,具有较高的工程应用价值。
In order to keep measurement traceability, instrument calibration must be executed periodically. The traditional method of instrument calibration is extensively time and resource consuming. At the same time it is dubious to maintain the state of the instrument that has been calibrated as the former state at the calibration laboratory when it returns to the calibration clients. Although the technology of on-site calibration applied at present time can reduce calibration time, it needs a calibration operator mastering specialty technology. Resource consuming will higher when a professor goes to the site for operating instrument calibration. These don't meet the requirement of these clients who require that instrument calibration is real time and moderate resource consuming. Thus it is very important to research new technology about instrument calibration.In this thesis, a remote instrument calibration technology based on VI(Virtual Instrument) is put forward. Calibration operator can control a calibration process real time and remotely by using mat technology. The main works of this thesis are as following:1. The resource of measurement uncertainty about VIs based on PC is discussed and it proposes to evaluate the measurement uncertainty of VIs by using numerical methods.2. The framework of remote calibration is researched and a mode using C/S combined with B/S is put forward. How to realize calibration client access to calibration homepage and calibration database is designed by using ASP combined with ADO. How to realize basically manage calibration database is also designed by using LabSQL combined with ADO at calibration laboratory. And some methods about how to realize remote control of calibration VI are discussed and compared. And how to realize that the calibration laboratory can control the calibration VI remotely and measurement data can be shared real time by using VI Server combined with DataSocket is designed.3. The risk in remote calibration is discussed and the security of calibration VI running in calibration client site is designed by using mobile agent.4.A remote calibration experiment about an instrument based on Modbus protocol is given. Modbus communication protocol is realized through labVIEW.The remote instrument calibration system based on VI set up in this thesis can
communicate with instruments embedded with communication interface conveniently and be accessed easy, enhance the quality of real-time calibration,short the time used to instrument traceability or transfer,reduce the consuming of calibration and improve the security by using mobile agent.
引文
[1] 梁志国、孙璟宇,虚拟仪器校准中的几个问题[J].航空科学技术,2000,64(3):36-37.
[2] 殳伟群、贺玲、严林波,走进网络化校准——远程校准技术初探(之一)[J]计算机应用研究,2002,19(9):23-26
[3] R. A. Dudly、N. M. Ridler, Internet calibration direct to national measurement standards for automatic network analysers, IEEE instrumentation and Measurement, May 2001: 255-258
[4] http://www.ptb.de/
[5] A. Carullo、W. Parvis、A. Vallan, A Travelling Standard for the Calibration of Data-Acquisition Boards, IEEE instrumentation and Measurement, May 2001: 1625-1629
[6] A. Carullo、M. Parvis、A. Vallan, Security Issues for Internet-Bbsed Calibration Activities, IEEE instrumentation and Measurement, May 2002: 817-822
[7] Mihaela M. Albu、Alessandro Ferrero、Florin Mihai、Simona Salicone, Remote Calibration Using Mobile, Multiagent Technology, IEEE instrumentation and Measurement, Vol. 54, No. 1, Feb. 2005: 24-30
[8] C. Cassigo、L. Callegaro、G. La Paglia, Internet Calibration for Electrical Metrology: First Application at IEN, IEEE instrumentation and Measurement, May 2004: 102-105
[9] Espina PI, Tele-metrology: Remote Flowmete Calibration[J], Flow Control Magazine, 1999. 5(1): 16221
[10] Nile Oldham、Mark Parker, Internet-based Test Service for Multifunction Calibrators, IEEE instrumentation and Measurement, May 1999: 1485-487
[11] http://www.nist.gov/tele-cals[EB/OL],12.2001
[12] 贺玲、殳伟群、严林波,基于虚拟仪器的远程校准系统软件——远程校准技术初探(之二),计算机应用研究,2002,19(10):8-10
[13] 严林波、殳伟群、贺玲,远程校准系统的网络连接——远程校准技术初探(之三),计算机应用研究,2002,19(11):53-56
[14] 王勇、施文康,基于Internet的数字示波器e-Calibration技术研究,计算机测量与控制,2004.12:296-298
[15] 潘光斌,网络化校准测试系统及其软件设计技术研究,中国计量,2004.8:72-73
[16] 梁志国、孙璟宇,虚拟仪器自动校准系统的实现,测控技术,2004.8:23-25
[17] 吕洁光、马蔚宇、刘晓帆,VXI仪器的校准检测技术,测控技术,2000.6:38-42
[18] Salvatore Nuccio、Ciro Sputaro, Assessment of virtual instruments measurement uncertainty, Computer Standards & Interfaces, 23 (2001): 39-46
[19] D. A. Larnpasi、Podesta, A practical approach to evaluate the measurement uncertainty of virtual instruments, IEEE instrumentation and Measurement, May 2004: 146-151
[20] Emilio Ghiani、Nicola Locci、Carlo Muscas, Auto-evaluation of the Uncertainty in Virtual Instruments, IEEE instrumentation and Measurement, May 2002: 385-389
[22] Peng yu、Peng xiyuan、Meng shengwei, Virtual Instrument Parameter Calibration with Particle Swarm Optimization, IEEE instrumentation and Measurement, May 2003: 42-45
[22] 詹惠琴、习友宝、古天祥,基于数值仿真法的虚拟仪器不确定度评估研究,仪器仪表 学报,2005.10:1011-1015
[23] 倪育才,实用测量不确定度评定,中国计量出版社,2004.5
[24] 黄浩,不确定度与误差的关系,中国科技信息,2005,15期:
[25] 张巍,ASP+SQL Server网络应用系统开发与实例,人民邮电出版社,2004.3
[26] 杨乐平,LabVIEW高级程序设计,清华大学出版社,2003.4
[27] 李建文、刘笃喜、朱名铨,基于ADO技术的LabVIEW访问数据库的方法,自动化仪表,2003.9:15-18
[28] 张冰、戴晓强、朱志宇,ADO和LabSQL在数据库操作方面的应用,微计算机信息,2005,10-2期:88-90
[29] Masoud Naghedolfeizi、Sanjeev Arora、Singli Garcia, Survey of LabVIEW Technologies for Building Web/Internet-Enabled Experimental Setups, Proceedings of American Society for Engineering Education Annual Conference & Exposition, 2002
[30] AppletView EntireManual 4.0, Nacimiento Software Corporation.
[31] 白原铭、黄建立.远端教学环境构架,2003.5
[32] Jin Fan、Stephen Horan, Implementing real-time radio propagation measurements over the internet, May 2000
[33] 张云勇,、刘锦德,移动agent技术,清华大学出版社,2003.9
[34] Mitsurn Oshima、Guenter Karjoth、KouichiOno, Aglets Specification 1.1 Draft, Sep. 1998
[35] 张晨、付冰、赵军,Java 2应用编程150例,电子工业出版社,2003.9
[36] Luca Ferrari, The Aglet 2.0.2 User's Manual, Sep. 2004
[37] Modicon Inc., Modbus protocol user's guide[Z], 1996
[38] 钟鸣、马龙华、孙少群,Modbus协议的ActiveX组件实现,自动化仪表,2005.2:64-66
[2] 殳伟群、贺玲、严林波,走进网络化校准——远程校准技术初探(之一)[J]计算机应用研究,2002,19(9):23-26
[3] R. A. Dudly、N. M. Ridler, Internet calibration direct to national measurement standards for automatic network analysers, IEEE instrumentation and Measurement, May 2001: 255-258
[4] http://www.ptb.de/
[5] A. Carullo、W. Parvis、A. Vallan, A Travelling Standard for the Calibration of Data-Acquisition Boards, IEEE instrumentation and Measurement, May 2001: 1625-1629
[6] A. Carullo、M. Parvis、A. Vallan, Security Issues for Internet-Bbsed Calibration Activities, IEEE instrumentation and Measurement, May 2002: 817-822
[7] Mihaela M. Albu、Alessandro Ferrero、Florin Mihai、Simona Salicone, Remote Calibration Using Mobile, Multiagent Technology, IEEE instrumentation and Measurement, Vol. 54, No. 1, Feb. 2005: 24-30
[8] C. Cassigo、L. Callegaro、G. La Paglia, Internet Calibration for Electrical Metrology: First Application at IEN, IEEE instrumentation and Measurement, May 2004: 102-105
[9] Espina PI, Tele-metrology: Remote Flowmete Calibration[J], Flow Control Magazine, 1999. 5(1): 16221
[10] Nile Oldham、Mark Parker, Internet-based Test Service for Multifunction Calibrators, IEEE instrumentation and Measurement, May 1999: 1485-487
[11] http://www.nist.gov/tele-cals[EB/OL],12.2001
[12] 贺玲、殳伟群、严林波,基于虚拟仪器的远程校准系统软件——远程校准技术初探(之二),计算机应用研究,2002,19(10):8-10
[13] 严林波、殳伟群、贺玲,远程校准系统的网络连接——远程校准技术初探(之三),计算机应用研究,2002,19(11):53-56
[14] 王勇、施文康,基于Internet的数字示波器e-Calibration技术研究,计算机测量与控制,2004.12:296-298
[15] 潘光斌,网络化校准测试系统及其软件设计技术研究,中国计量,2004.8:72-73
[16] 梁志国、孙璟宇,虚拟仪器自动校准系统的实现,测控技术,2004.8:23-25
[17] 吕洁光、马蔚宇、刘晓帆,VXI仪器的校准检测技术,测控技术,2000.6:38-42
[18] Salvatore Nuccio、Ciro Sputaro, Assessment of virtual instruments measurement uncertainty, Computer Standards & Interfaces, 23 (2001): 39-46
[19] D. A. Larnpasi、Podesta, A practical approach to evaluate the measurement uncertainty of virtual instruments, IEEE instrumentation and Measurement, May 2004: 146-151
[20] Emilio Ghiani、Nicola Locci、Carlo Muscas, Auto-evaluation of the Uncertainty in Virtual Instruments, IEEE instrumentation and Measurement, May 2002: 385-389
[22] Peng yu、Peng xiyuan、Meng shengwei, Virtual Instrument Parameter Calibration with Particle Swarm Optimization, IEEE instrumentation and Measurement, May 2003: 42-45
[22] 詹惠琴、习友宝、古天祥,基于数值仿真法的虚拟仪器不确定度评估研究,仪器仪表 学报,2005.10:1011-1015
[23] 倪育才,实用测量不确定度评定,中国计量出版社,2004.5
[24] 黄浩,不确定度与误差的关系,中国科技信息,2005,15期:
[25] 张巍,ASP+SQL Server网络应用系统开发与实例,人民邮电出版社,2004.3
[26] 杨乐平,LabVIEW高级程序设计,清华大学出版社,2003.4
[27] 李建文、刘笃喜、朱名铨,基于ADO技术的LabVIEW访问数据库的方法,自动化仪表,2003.9:15-18
[28] 张冰、戴晓强、朱志宇,ADO和LabSQL在数据库操作方面的应用,微计算机信息,2005,10-2期:88-90
[29] Masoud Naghedolfeizi、Sanjeev Arora、Singli Garcia, Survey of LabVIEW Technologies for Building Web/Internet-Enabled Experimental Setups, Proceedings of American Society for Engineering Education Annual Conference & Exposition, 2002
[30] AppletView EntireManual 4.0, Nacimiento Software Corporation.
[31] 白原铭、黄建立.远端教学环境构架,2003.5
[32] Jin Fan、Stephen Horan, Implementing real-time radio propagation measurements over the internet, May 2000
[33] 张云勇,、刘锦德,移动agent技术,清华大学出版社,2003.9
[34] Mitsurn Oshima、Guenter Karjoth、KouichiOno, Aglets Specification 1.1 Draft, Sep. 1998
[35] 张晨、付冰、赵军,Java 2应用编程150例,电子工业出版社,2003.9
[36] Luca Ferrari, The Aglet 2.0.2 User's Manual, Sep. 2004
[37] Modicon Inc., Modbus protocol user's guide[Z], 1996
[38] 钟鸣、马龙华、孙少群,Modbus协议的ActiveX组件实现,自动化仪表,2005.2:64-66