基于GPRS的自动售货机监控系统的设计与实现
摘要
在同一地区随着自动售货机数量的增多,管理中不断出现新问题,传统的自动售货机运营管理方式已不能满足需求,本文结合实际情况设计并实现了基于GPRS的自动售货机监控系统,适应了当前运营商的需求。
本文在研究了国内外自动售货机管理系统的基础上,对基于GPRS的自动售货机监控系统的整体结构进行了设计,并分别设计了自动售货机的通讯终端,监控中心的监控系统以及两者之间的通讯协议。
首先自动售货机的通讯终端实现了自动售货机终端与监控中心之间通讯。该终端使用由西门子提供的GPRS DTU,该设备只支持RS232接口,而自动售货与外围设备通讯采用的是MDB/ICP协议,所以本文设计了总线转换接口来完成协议之间的转换工作。
然后通过对C/S架构和B/S架构的研究,结合他们的优点,设计了以C/S+B/S为架构的监控中心,该监控中心主要完成自动售货机状态信息的接收、遥控信息的发送和相关数据的显示。
最后分析了通信过程中单一使用应答式规约或循环式规约的不足,本文通过结合应答式规约和循环式规约,有针对性的设计了问讯式和主动上传式通讯规约相结合的自动售货机与监控中心之间的通信协议,并在不同时间段、不同数据包长、不同的发送频率下,测试了数据达到的最高速率、到达的正确率和延时情况,试验结果表明该系统可以满足实际的需求。
本系统为运营商提供高效的管理,从而大大提高服务水平和质量,进而降低运营成本。
In the same area, as the number of vending machines increases, some new problems of management emerge. So the traditional operation methods of vending machine can not meet the demands. This paper designs and achieves the vending machine monitoring system based on GPRS that can meet.
Based on the research of vending machines at home and aboard, this paper designs the whole structure of vending machine monitoring system based on GPRS, and designs the communication terminal of the vending machine, the monitoring system of the monitoring center and the communication protocol between them.
Firstly, with the communication terminal of the vending machine, the terminal of the vending machine and the monitoring center can communicate with each other. The terminal uses the GPRS DTU provided by Siemens, which only supports the interface of RS232, and automatic sale communicates with peripheral equipments with the MDB/ICP protocol, so this paper designs the bus interface to realize the conversion between the protocols.
Secondly, based on the research of C/S and B/S, referring to their advantages and disadvantages, the paper designs the monitoring center on the basis of the structure of C/S+B/S, whose task is receiving the information of the vending machine's status, sending the information of remote control and show the relative data.
Thirdly, analyzed the imperfections of ask-and-answer mechanism or circular mechanism, on the basis of the combinative regulations of the above two mechanisms, this paper mainly designs the communication protocol of vending machines and monitors on the basis of ask-and-answer mechanism and the initiative communication mechanism. Besides, the paper tests the highest rates that the data can reach, the accuracy of the data which have reached, and the delay of the data in different time periods, in different lengths of data packets, in different sending frequency, respectively, and the results show that the system can satisfy the actual demands.
In all, this system helps the operators manage effectively, which not only improves service level and quality, but also reduces the operating costs.
本文在研究了国内外自动售货机管理系统的基础上,对基于GPRS的自动售货机监控系统的整体结构进行了设计,并分别设计了自动售货机的通讯终端,监控中心的监控系统以及两者之间的通讯协议。
首先自动售货机的通讯终端实现了自动售货机终端与监控中心之间通讯。该终端使用由西门子提供的GPRS DTU,该设备只支持RS232接口,而自动售货与外围设备通讯采用的是MDB/ICP协议,所以本文设计了总线转换接口来完成协议之间的转换工作。
然后通过对C/S架构和B/S架构的研究,结合他们的优点,设计了以C/S+B/S为架构的监控中心,该监控中心主要完成自动售货机状态信息的接收、遥控信息的发送和相关数据的显示。
最后分析了通信过程中单一使用应答式规约或循环式规约的不足,本文通过结合应答式规约和循环式规约,有针对性的设计了问讯式和主动上传式通讯规约相结合的自动售货机与监控中心之间的通信协议,并在不同时间段、不同数据包长、不同的发送频率下,测试了数据达到的最高速率、到达的正确率和延时情况,试验结果表明该系统可以满足实际的需求。
本系统为运营商提供高效的管理,从而大大提高服务水平和质量,进而降低运营成本。
In the same area, as the number of vending machines increases, some new problems of management emerge. So the traditional operation methods of vending machine can not meet the demands. This paper designs and achieves the vending machine monitoring system based on GPRS that can meet.
Based on the research of vending machines at home and aboard, this paper designs the whole structure of vending machine monitoring system based on GPRS, and designs the communication terminal of the vending machine, the monitoring system of the monitoring center and the communication protocol between them.
Firstly, with the communication terminal of the vending machine, the terminal of the vending machine and the monitoring center can communicate with each other. The terminal uses the GPRS DTU provided by Siemens, which only supports the interface of RS232, and automatic sale communicates with peripheral equipments with the MDB/ICP protocol, so this paper designs the bus interface to realize the conversion between the protocols.
Secondly, based on the research of C/S and B/S, referring to their advantages and disadvantages, the paper designs the monitoring center on the basis of the structure of C/S+B/S, whose task is receiving the information of the vending machine's status, sending the information of remote control and show the relative data.
Thirdly, analyzed the imperfections of ask-and-answer mechanism or circular mechanism, on the basis of the combinative regulations of the above two mechanisms, this paper mainly designs the communication protocol of vending machines and monitors on the basis of ask-and-answer mechanism and the initiative communication mechanism. Besides, the paper tests the highest rates that the data can reach, the accuracy of the data which have reached, and the delay of the data in different time periods, in different lengths of data packets, in different sending frequency, respectively, and the results show that the system can satisfy the actual demands.
In all, this system helps the operators manage effectively, which not only improves service level and quality, but also reduces the operating costs.
引文
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[2]蒋卫星.基于GPRS的售货机远程监控管理系统的设计与实现:[硕士学位论文].长沙:中南大学,2007
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[4]邵宇锋,高明煜,曾毓.GSM技术在路灯远程监控系统中的应用.电工技术杂志,2004,(12):89-92
[5]宋国峰.GSM短信技术在电力变压器监测系统中的应用[J].通信信号,2006,(3):43-45
[6]卢伟,王习群.基于GSM短信息的污水处理水质水量在线监测系统.给排水与污水处理,2005,(4):50-52
[7]时伟.基于GSM短信息通信方式的路灯无线监控系统.安徽电子信息职业技术学院学报,2006,5(23):85-86
[8]张亮,曾伟,郑确.沈阳煤业集团公司数字化矿山信息管理系统的应用.煤矿安全,2006,9(11):41-43
[9]赵政宁,孙航.一款基于GSM的自动售货机无线监控系统的实现.电子元器件应用,2006,8(10):28-31
[10]何小荣,钱清泉,陈维荣.GPRS在工业业监控中的应用.铁道机车车辆,2004,24(1):20-22
[11]陈金山,杨学军,黄载禄.GPRS的移动性管理.通讯世界,2001,4(10):38-39
[12]JKeng,SPand.Short Message Peer to Peer Protocol Specification SMPP Developers Forum,1999,1(2):59-68
[13]万海鹏,候春萍.基于8051嵌入式系统的GPRS终端实现.计算机应用,2004,(5):13-16
[14]武装,周云峰.基于GPRS+WEB分散点工业数据采集与控制,2004,23,(6):56-58
[15]施伟年,凌海宏.GPRS无线DDN系统与应用.电力系统通信,2004,3(32):26-28
[16]黄宇红,孙少陵.通用分组无线业务(GPRS).电信科学,2000,9(5):39-42
[17]张静钟,章队.GSM中的通用分组无线业务-GPRS.电信技术,2000,10(2):10-11
[18]徐济仁.GPRS技术与应用.无线电工程,2002,32(10):23-26
[19][美]R.J.(Bud)Bates著,朱洪波译.通用分组无线业务(GPRS)技术与应用.北京:人民邮电出版社,2004:22-81
[20]Kim DK,Tok CK.Mobile multicastion in wireless ATM networks.Mobile Networks and Applications,2000,3(12):103-110
[21]Kalden R,Meirick I,Meyer M.Wireless Interact Access Based on GPRS,IEEE Personal Communications,2000,2(17):8-18
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[24]JordanR,AbdallahC.TWireless Communications and Newtorking:An Ovewie.IEEE Antenna and ProPagation Magazine,2002,44(1):185-193
[25]湖南金码.国家高技术研究发展计划(863计划)课题任务合同书.长沙:湖南金码科技发展有限公司,2003:259-283
[26]NAMA.MDB/ICP specification.National Automatic Merchandising Association,2003:129-139
[27]National Automatic Merchandising Association.Multi-Drop Bus/Internal Communication Protocol MDB/ICP Version 2.National Automatic Merchandising Association,2000,8(1):10-13
[28]赵海林.自动售货机信息管理系统的设计与实现:[硕士学位论文].长沙:中南大学,2005
[29]胡科,蔡方凯,胡蓉.基于GPRS数据传输智能终端的实现.电讯技术,2003,(4):117-119
[30]陈安宝.基于MDB/ICP协议的纸币识别器与自动售货机通讯的研究.机械管理开发,2004,4(13):77-78
[31]金瓯,勾红领,危巍.基于GPRS的自动售货机管理系统设计与实现.计算机测量与控制,2007,15(11):1611-1617
[32]黄承安,张跃.微控制器的GPRS无线上网.单片机与嵌入式系统应用,2003,4(12):19-22
[33]范寿康,王宁.单片微型计算机的应用开发技术.北京:人民邮电出版社,1993:49-86
[34]李洪涛,皇甫堪,王展.AT89C51单片机在无线数据传输中的应用.单片机及嵌入式系统应用,2003,18(6):25-27
[35]何艳,陈国强.基于FPGA的ARINC-429总线收发系统实现.电子工程师,2005,31(11):19-211
[36]Sabastien Lesrel.AT Commands for GPRS(version1.3),2000.11:75-88
[37]Usman Y.Embedded solution for system on chip ARINC 429 and UART interfaces.WSEAS Transactions on Elect ronics,2006,3(2):85-92
[38]焦青松,吴应良.基于OPC和JAVA的远程监控系统架构设计和设计.微计算机信息,2006,22(2-1):74-77
[39](美)W.Richard Stevens.TCP/IP详解,卷1:协议.北京:机械工业出版社,2000:48-99
[40]Zaghloul,S.,Frost,V,Mohammad,A.J.Modeling TCP long file transfer latency over longdelay wireless multilink PPP Communications Letters,2005.9(11):988-990
[41]李真文.SQLServer 2000开发指南.北京:希望电子出版社,2001:59-127
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