基于GPRS的LED显示屏控制系统的研究与设计
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摘要
随着科技的发展,LED广告屏的性能不断提高,并且价格越来越低,LED广告屏作为一种新型信息显示媒体在现代信息社会当中得到越来越多人的认可并被广泛的应用,目前广告屏的发展方向之一就是无线LED广告屏的设计与使用。
本论文提出的无线LED广告屏的设计方案是针对尚未架设通讯线路与电源线路、人流较大、有广告宣传的价值地方,要求环境为露天并且被GPRS信号所覆盖。以MSP430F149单片机为控制核心,实现LED显示驱动、LED广告屏的无线通讯、LED太阳能收集、电源检测与控制等功能。硬件电路系统的设计采用了当前应用广泛的低功耗芯片MSP430F149作为控制器,结合其他CMOS芯片作为外围部件,搭建了一种典型的无线LED广告屏的硬件结构,配合太阳能供电发挥系统低功耗的特点,系统稳定可靠。充分利用了主控芯片自带的AD转换功能对蓄电池电压进行实时采样,提高了电源检测的精度,保证了系统供电系统的稳定。无线信息传输采用了SIM300C模块,利用GPRS无线网络传输对字模和控制命令进行信息可靠传输,对字模编码的读取与匹配在控制模块进行,避免了大量数据量的无线传输问题,使无线信息传输更简洁稳定,提高传输可靠性。上位机编程采用了VB,实现的文字到字模的转换和字模与控制命令的发送。下位机采用了采用模块化的程序设计方法,分为了系统控制模块与LED驱动两部分,各部分下分多个程序功能模块,将各个功能模块分别进行独立编程。
With the development of science and technology, LED advertising screen with improving performance and price lower, LED advertising screen as a new information display media in the modern information society get more people's recognition of and widely application, at present one of the development direction of advertising screen is the wireless LED advertising screen design and use.
Demanding environment must open for the covered and GPRS signal,this paper presents a design of wireless LED advertising screen where there is no lines of communication and power lines set up, much people passing by, and only request in written form of advertising. This design with MSP430 microcontroller as control core, realized the function of the wireless communication, LED solar collecting, power of testing and controlling, function circuit design of LED display drivering. Hardware circuit system was designed using the applied widely and low-powered chip MSP430F149 as controller, combined with other CMOS chips as peripheral parts, built a kind of typical wireless LED advertising screen in practical aspect of hardware structure. The solar power plays with the characteristics of the low consumption, the system is stable and reliable, and fully utilized the main control chip bringing AD transform function battery voltage of real-time sampling, and improved the accuracy of power testing system, and ensured the stability of the power supply system. Wireless information transmission adopts the SIM300C module, using GPRS wireless network transmission control command of font and information reliable transmission, to read and matching word-model codes in control module, to avoid a lot of amount of data,making the transmission more concise and stable. PC programming adopted VB, realizing the conversion of Chinese characters to unicode and the transmission of unicode andcontrolling command. Software of microcomputer system divided into the system control module and LED drive module, each functional module divided into different tasks,and independent programmed respectively.
本论文提出的无线LED广告屏的设计方案是针对尚未架设通讯线路与电源线路、人流较大、有广告宣传的价值地方,要求环境为露天并且被GPRS信号所覆盖。以MSP430F149单片机为控制核心,实现LED显示驱动、LED广告屏的无线通讯、LED太阳能收集、电源检测与控制等功能。硬件电路系统的设计采用了当前应用广泛的低功耗芯片MSP430F149作为控制器,结合其他CMOS芯片作为外围部件,搭建了一种典型的无线LED广告屏的硬件结构,配合太阳能供电发挥系统低功耗的特点,系统稳定可靠。充分利用了主控芯片自带的AD转换功能对蓄电池电压进行实时采样,提高了电源检测的精度,保证了系统供电系统的稳定。无线信息传输采用了SIM300C模块,利用GPRS无线网络传输对字模和控制命令进行信息可靠传输,对字模编码的读取与匹配在控制模块进行,避免了大量数据量的无线传输问题,使无线信息传输更简洁稳定,提高传输可靠性。上位机编程采用了VB,实现的文字到字模的转换和字模与控制命令的发送。下位机采用了采用模块化的程序设计方法,分为了系统控制模块与LED驱动两部分,各部分下分多个程序功能模块,将各个功能模块分别进行独立编程。
With the development of science and technology, LED advertising screen with improving performance and price lower, LED advertising screen as a new information display media in the modern information society get more people's recognition of and widely application, at present one of the development direction of advertising screen is the wireless LED advertising screen design and use.
Demanding environment must open for the covered and GPRS signal,this paper presents a design of wireless LED advertising screen where there is no lines of communication and power lines set up, much people passing by, and only request in written form of advertising. This design with MSP430 microcontroller as control core, realized the function of the wireless communication, LED solar collecting, power of testing and controlling, function circuit design of LED display drivering. Hardware circuit system was designed using the applied widely and low-powered chip MSP430F149 as controller, combined with other CMOS chips as peripheral parts, built a kind of typical wireless LED advertising screen in practical aspect of hardware structure. The solar power plays with the characteristics of the low consumption, the system is stable and reliable, and fully utilized the main control chip bringing AD transform function battery voltage of real-time sampling, and improved the accuracy of power testing system, and ensured the stability of the power supply system. Wireless information transmission adopts the SIM300C module, using GPRS wireless network transmission control command of font and information reliable transmission, to read and matching word-model codes in control module, to avoid a lot of amount of data,making the transmission more concise and stable. PC programming adopted VB, realizing the conversion of Chinese characters to unicode and the transmission of unicode andcontrolling command. Software of microcomputer system divided into the system control module and LED drive module, each functional module divided into different tasks,and independent programmed respectively.
引文
[1]徐建化.LED技术应用与展望。科技情报开发与经济,2002,10(1)：287-288
[2]虑根裕.平板显示技术.北京：人民邮电出版社,2002.
[3]光二极管材料与器件的历史、现状和展望,物理学和高新技术,2003,9
[4]马宏平,LED显示屏的计算机远程控制系统,重庆大学学报,2002,10
[5]李爱国模块化LED电子大屏幕的设计与实现计算机应用研究98年第6期
[6]张华,樊庆文等,一种经济型大屏幕LED显示系统,自动化信息,2002,2：25-26
[7]马黎,单片机控制的汉字点阵大屏幕显示,计算机应用研究,1999,3
[8]吴金龙,洪家军.数据通信与网络应用.北京：清华大学出版社,2006
[9]赵才荣,丁铁夫,郑喜凤,刘高霞.大屏幕LED显示控制系统的设计[J].液晶与显示,200520(12)：564-569
[10]赵书利,叶烽,朱刚.太阳能电池技术应用与发展[J].船电技术,2010,(04)
[11]章诗,王小平,王丽军,朱玉传,林石裕,顾应展,田健健,周成琳.薄膜太阳能电池的研究进展[J].材料导报,2010,(09).
[12]太阳能电池的开发趋势[J].中外能源,2010,(05)
[13]赵宏娟.太阳能电池工作原理与种类[J].黑龙江科技信息,2007,(17)
[14]Simulation and Optimal Research for Premixed Combustor Based on Micro-Thermoelectric Generate Device[A]. Proceedings of the Fifth International Symposium on Fluid Power Transmission and Control[C],2007
[15]杨金焕,陈中华.21世纪太阳能发电的展望.上海电力学院学报.2001,第17卷第4期
[16]俞可.终极太阳能电池[J].技术与市场,2010,(08)
[17]宁铎,高继春.发展太阳能光伏发电的意义及前景.西北轻工业学院学报.2002,第20卷
[18]郝国法,杨妓.LED大屏幕控制电路设计方案研究[J].电视技术,2005,(11)：
[19]胡大可编著.MSP430系列超低功耗16位单片机原理与应用.北京航空航天大学出版社,2000
[20]胡大可.MSP430系列单片机C语言程序设计与开发.第1版.北京：北京航空航天大学出版社,2003.63-74
[21]MSP430 Technical Support Website.http://www.lierda.com/
[22]秦龙,MSP430单片机应用系统开发典型实例,中国电力出版社,2005
[23]A New-type Water Level Measured Device Based on MSP430 Series Chip Micro Controlled[A]. Proceedings of 6th International Symposium on Test and Measurement(Volume 4)[C],2005
[24]靳建波,吴晓红,王正勇,何小海,卿粼波.基于MSP430F135的货车防盗报警系统设计[J].安防科技,2007,(11)
[25]SIM300C AT Commands Set. Version2.0
[26]SIM300C Hardware Interface Description. Version03.04
[27]杨森,刘一兵.基于MSP430单片机的车辆蓄电池报警器设计[J].自动化与仪器仪表,2010,(03)
[28]JohnM.RodrignesJr.CharaeteristiCSofCommercialRTOS[C].Proceedingsofthe2001 IntemationalConfereneeonEmbeddedSystem,2001,10
[29]GSM0260.Digital Cellular Telecommunications System(Phase 2+).GPRS Service Description,Stage 1 (version7.4.0),2000.3
[30]SIM300 Hardware Interface Description.2005.
[31]吕婕GPRS技术.北京邮电大学出版社,2001
[32]卢满怀GPRS数据传送服务的无线通信控制器设计[J].单片机与嵌入式系统,2004.8：9-11.
[33]周明刚,王元芳,宋庆美,等.用AT指令实现的用电欠费短信通知系统[J].现代计算机,2009(6)：186-188
[34]徐济仁GPRS技术与应用.无线电工程,20(2),32(10)：23-26
[35]韩斌杰.GPRS原理及其网络优化.第1版.北京：机械工业出版社,2003.
[36]I.Goetz.Keeping up with GPRS.Communications Engineer,2003
[37]黄承安,张跃,云怀中.基于GPRS的远程仪表监控系统.计算技术与自动化,2003,第22卷(第3期)：26-29
[38]李为虎,樊昌元.基于GPRS的嵌入式TCP胆协议转换器设计[J].成都电子信息工程学院学报,2008,23(6)：626-62
[39]X5045 datasheet. Xicor, Inc.2000
[40]PCF8563 datasheet. Philips Semiconductors.2002
[41]周永,陈宁.几种典型汉字编码之间转换的原理与实现[A].2008中国信息技术与应用学术论坛论文集(二)[N],2008.
[42]陈琦,丁天怀,李成,王鹏.基于GPRS/GSM的低功耗无线远程测控终端设计[J].清华大学学报(自然科学版)网络.预览,2009,(02)
[43]LM2576 datasheet. National Semiconductors.2002
[44]崔彦锋等.VB网络与远程控制编程实例教程[M].北京,北京希望电子出版社,2002.
[45]Nueleus FILE Referenee Manual Aceelerated Technology, Inc.2001
[46]蓝晓雾,童小念.PPP协议在GPRS无线网络中的嵌入式实现.中南民族大学学报,2005,24(4)：72-75
[47]RFC1662.PPP in HDLC-like framing[S]
[48]赵雪峰,管建.基于PPP协议软件的实现.微计算机信,2005,21(10-3)：48-50
[49]RFC1661.The Point-to-Point Protoeol(PPP)[S].NetworkWOrkingGroup,1994
[50]GT21L16S2W用户手册V31.http://www.genitop.com/Index.html
[2]虑根裕.平板显示技术.北京：人民邮电出版社,2002.
[3]光二极管材料与器件的历史、现状和展望,物理学和高新技术,2003,9
[4]马宏平,LED显示屏的计算机远程控制系统,重庆大学学报,2002,10
[5]李爱国模块化LED电子大屏幕的设计与实现计算机应用研究98年第6期
[6]张华,樊庆文等,一种经济型大屏幕LED显示系统,自动化信息,2002,2：25-26
[7]马黎,单片机控制的汉字点阵大屏幕显示,计算机应用研究,1999,3
[8]吴金龙,洪家军.数据通信与网络应用.北京：清华大学出版社,2006
[9]赵才荣,丁铁夫,郑喜凤,刘高霞.大屏幕LED显示控制系统的设计[J].液晶与显示,200520(12)：564-569
[10]赵书利,叶烽,朱刚.太阳能电池技术应用与发展[J].船电技术,2010,(04)
[11]章诗,王小平,王丽军,朱玉传,林石裕,顾应展,田健健,周成琳.薄膜太阳能电池的研究进展[J].材料导报,2010,(09).
[12]太阳能电池的开发趋势[J].中外能源,2010,(05)
[13]赵宏娟.太阳能电池工作原理与种类[J].黑龙江科技信息,2007,(17)
[14]Simulation and Optimal Research for Premixed Combustor Based on Micro-Thermoelectric Generate Device[A]. Proceedings of the Fifth International Symposium on Fluid Power Transmission and Control[C],2007
[15]杨金焕,陈中华.21世纪太阳能发电的展望.上海电力学院学报.2001,第17卷第4期
[16]俞可.终极太阳能电池[J].技术与市场,2010,(08)
[17]宁铎,高继春.发展太阳能光伏发电的意义及前景.西北轻工业学院学报.2002,第20卷
[18]郝国法,杨妓.LED大屏幕控制电路设计方案研究[J].电视技术,2005,(11)：
[19]胡大可编著.MSP430系列超低功耗16位单片机原理与应用.北京航空航天大学出版社,2000
[20]胡大可.MSP430系列单片机C语言程序设计与开发.第1版.北京：北京航空航天大学出版社,2003.63-74
[21]MSP430 Technical Support Website.http://www.lierda.com/
[22]秦龙,MSP430单片机应用系统开发典型实例,中国电力出版社,2005
[23]A New-type Water Level Measured Device Based on MSP430 Series Chip Micro Controlled[A]. Proceedings of 6th International Symposium on Test and Measurement(Volume 4)[C],2005
[24]靳建波,吴晓红,王正勇,何小海,卿粼波.基于MSP430F135的货车防盗报警系统设计[J].安防科技,2007,(11)
[25]SIM300C AT Commands Set. Version2.0
[26]SIM300C Hardware Interface Description. Version03.04
[27]杨森,刘一兵.基于MSP430单片机的车辆蓄电池报警器设计[J].自动化与仪器仪表,2010,(03)
[28]JohnM.RodrignesJr.CharaeteristiCSofCommercialRTOS[C].Proceedingsofthe2001 IntemationalConfereneeonEmbeddedSystem,2001,10
[29]GSM0260.Digital Cellular Telecommunications System(Phase 2+).GPRS Service Description,Stage 1 (version7.4.0),2000.3
[30]SIM300 Hardware Interface Description.2005.
[31]吕婕GPRS技术.北京邮电大学出版社,2001
[32]卢满怀GPRS数据传送服务的无线通信控制器设计[J].单片机与嵌入式系统,2004.8：9-11.
[33]周明刚,王元芳,宋庆美,等.用AT指令实现的用电欠费短信通知系统[J].现代计算机,2009(6)：186-188
[34]徐济仁GPRS技术与应用.无线电工程,20(2),32(10)：23-26
[35]韩斌杰.GPRS原理及其网络优化.第1版.北京：机械工业出版社,2003.
[36]I.Goetz.Keeping up with GPRS.Communications Engineer,2003
[37]黄承安,张跃,云怀中.基于GPRS的远程仪表监控系统.计算技术与自动化,2003,第22卷(第3期)：26-29
[38]李为虎,樊昌元.基于GPRS的嵌入式TCP胆协议转换器设计[J].成都电子信息工程学院学报,2008,23(6)：626-62
[39]X5045 datasheet. Xicor, Inc.2000
[40]PCF8563 datasheet. Philips Semiconductors.2002
[41]周永,陈宁.几种典型汉字编码之间转换的原理与实现[A].2008中国信息技术与应用学术论坛论文集(二)[N],2008.
[42]陈琦,丁天怀,李成,王鹏.基于GPRS/GSM的低功耗无线远程测控终端设计[J].清华大学学报(自然科学版)网络.预览,2009,(02)
[43]LM2576 datasheet. National Semiconductors.2002
[44]崔彦锋等.VB网络与远程控制编程实例教程[M].北京,北京希望电子出版社,2002.
[45]Nueleus FILE Referenee Manual Aceelerated Technology, Inc.2001
[46]蓝晓雾,童小念.PPP协议在GPRS无线网络中的嵌入式实现.中南民族大学学报,2005,24(4)：72-75
[47]RFC1662.PPP in HDLC-like framing[S]
[48]赵雪峰,管建.基于PPP协议软件的实现.微计算机信,2005,21(10-3)：48-50
[49]RFC1661.The Point-to-Point Protoeol(PPP)[S].NetworkWOrkingGroup,1994
[50]GT21L16S2W用户手册V31.http://www.genitop.com/Index.html