三星彩票代理

现场总线变送器原理及应用

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  一、引言

  信息技术的飞速发展,引起了自动化系统结构的变革,逐步形成了以网络集成自动化系统为基础的企业信息系统。现场总线三星彩票代理就是顺应这一形势发展起来的新技术。现场总线是应用在生产现场,在微机化测量控制设备(称为现场总线仪表)之间实现双向串行多节点数字通信系统,也被称为开放式、数字化、多点通信的底层控制网络,它在制造业、流程工业、交通、楼宇等方面的自动化系统中具有广泛的应用前景。

  MUQIAN,ZAIGUONEIKEGOUDAODEFF(XIANCHANGZONGXIANJIJINHUI)XIANCHANGZONGXIANYIBIAOYOU:LUOSIMENGTEGONGSIDEFF3051YALI(YACHA)BIANSONGQI、FF3244MVWENDUBIANSONGQI、FFDVC50000ZHINENGFAMEN;SmartGONGSIDEFFLD302YALI(YACHA)BIANSONGQI、FFTT302WENDUBIANSONGQI、FFFP302XIANCHANGZONGXIANDAOQIYAZHUANHUANQI。BENWENCONGGONGCHENGYINGYONGCHUFA,DUIFFTT302XIANCHANGZONGXIANWENDUBIANSONGQIDEYUANLIHEYINGYONGJIAYIJIESHAO,YIGONGZIDONGHUARENYUANCANKAO。

  二、原理

  1、功能与特性

三星彩票代理  TT302SHIYIZHONGJIANGWENDU、WENCHA、HAOFUDENGGONGYEGUOCHENGCANSHUZHUANBIANWEIXIANCHANGZONGXIANSHUZIXINHAODEBIANSONGQI,TAHAIJUYOUKONGZHIGONGNENG,QIDAOLEJIDISHI(XIANCHANG)YIBIAODEZUOYONG。

  TT302CELIANGWENDUPEIYONGRTD(REDIANZU)HUO,DANYEKEPEIYONGQITAJUYOUDIANZUHUOHAOFUSHUCHUDE,ZHURUGAOWENJI、FUHECHUANGANQI、DIANZUHUOWEIZHIZHISHIQIDENG。TT302CAIYONGSHUZIJISHUHOUNENGSHIXIANXIALIEXINGNENG:DANYIDEXINGHAONENGJIESHOUDUOZHONGCHUANGANQI、KUANLIANGCHENGFANWEI、DANZHIHUOCHAZHICELIANG;ZAIXIANCHANGHEKONGZHISHIZHIJIANJIEKOURONGYI,KEDADAJIANSHAOANZHUANGHEWEIHUFEIYONG,NENGJIESHOUERLUSHURU,YEJIUSHISHUOYOULIANGGECELIANGDIAN,ZHUNQUEDUWEI0.02%。

  TT302温度变送器内装AI(模拟输入)、PID(比例加积分加微分控制)、ISS(输入选择)、CHAR(线性化)和ARTH(计算)等5种功能模块。它们具有可由用户组态三星彩票代理的基本功能,各种功能模块都有输入、输出,并装有参数和一个算法。各功能模块用一个标识符来表示,功能模块的输入、输出等能用其他仪表从总线上读出,它们之间也能互相连接,其他仪表也能写入模块的输入。TT302与其他现场总线仪表互连构成现场总线控制系统。用户可通过功能模块的连接建立适合控制应用所需的控制策略。

  2、硬件构成原理

三星彩票代理  YOUTT302SHURUBAN、ZHUDIANLUBANHEXIANSHIBANZUCHENG。TT302JIESHOULAIZIREDIANOU(TC)、mVFASHENGQI、REDIANZU(ohm)CHUANGANQIDEXINHAO,ZHEIXIESHURUXINHAOBIXUZAIGUIDINGFANWEINEI。DIANYAGUIDINGFANWEIWEI50~500mV,DIANZUDEGUIDINGFANWEIWEI0~200W。LIANGCHENGKEYIZUTAI。

  (1)输入板

  MUXWEIDUOLUZHUANHUANQI,TADEZUOYONGSHIQUEBAOCHUANGANQIDUANZIDAOXINHAODIAOLIBANJIESHOUDEDIANYAXINHAOSHIZHENGQUEDEDUANZIJIANDIANYA。

  XINHAODIAOLIBANDEGONGNENGSHIJISHURUXINHAOCHENGSHANGYIGEZHENGQUEDEZENGYIYISHIHEA/D(MO/SHU)ZHUANHUANQIDEXINHAOJIESHOUFANWEI。

  DIANYUANGELIHEXINHAOGELIDEZUOYONGSHIFANGZHISHURUXINHAOYUDIXINGCHENGDIHUANDIANLIUERYINRUGANRAO。LAIZIZHUDIANLUBANCPUDEKONGZHIXINHAOHELAIZIA/DZHUANHUANQIDEXINHAOTONGGUOGUANGDIANOUHEQICHUANSHU,CONGERSHIXIANLEXINHAODIANDEGELI。TONGYANG,SHURUBANSHANGDEDIANYUANYEBIXUSHIGELIDE,DIANYUANGELISHICAIYONGBAZHILIUZHUANHUANWEIYIGAOPINJIAOLIU,BINGSHIYONGBIANYAQIFENGEDIANDELIANXILAISHIXIANDE。

  (2)主电路板

  ZHONGYANGCHULIQICPUSHITT302DEHEXINBUJIAN,TAKONGZHIZHEZHENGGEYIBIAOGEGEBUJIANDEXIEDIAOGONGZUO、XIANXINGHUAHETONGXIN。XITONGCHENGXUCUNZHUYUCPUWAIBUDEZHIDUCUNZHUQIPROM,YUNSUANSHUJUZANCUNZHUYURAM,RUGUODIANYUANKAIGUANDUANKAI,RAMZHONGDESHUJUJIUHUIDIUSHI。RANER,CPUNEIHAIYOUYIGEFEIYISHIXINGCUNZHUQIEEPROM,DANGDIANYUANKAIGUANDUANKAISHI,ZHEILIDESHUJURENGBAOLIU。YINCI,YIXIEZHONGYAODEBIAODING、ZUTAIHEBIANSHIDENGYINGYONGCHENGXUDOUCUNZHUZAIZHEILI。ZHUDIANLUBANSHANGDEEEPROMCUNZHUQIYONGLAICUNZHUZUTAICANSHU(ZHIGONGNENGMOKUAIDECANSHU)。

  CPU与信号整形之间是通信'>控制器,此控制器用来监视现场总线上的占空系数(或情况),调制和解调通信信号,引入和删除数字信号中开始和结束的定界符。

  BENJIDIAOZHENGWEILIANGGEGANHUANGGUAN(YECHENGCIXINGKAIGUAN)。ZAIBENJIDIAOZHENGSHI,BUYONGDAKAIYIBIAODEDUANGAI,JIZAIYIBIAODEDIANLUQUANBUBEIMIFENGDEQINGKUANGXIA,LIYONGCIBANGDEZHIRUYUZHICHUJIUKECHUFATT302NEIDECIKAIGUAN,JINXINGYIBIAODEZUTAIHEDIAOZHENG,CONGERSHIXIANCHANGYIBIAONEIDEDIANZIYUANJIANBUYUXIANCHANGDEELIEHUANJINGZHIJIEJIECHU,DADAYANZHANGLEDIANZIYUANJIANDESHIYONGSHOUMING,YESHIYIBIAOSHIYINGELIEHUANJINGDEXINGNENGDEDAOTIGAO。

三星彩票代理  TT302SHIYOUXIANCHANGZONGXIANGONGDIANDE,GONGDIANDIANYAWEI9~32VDC。ZAIGONGDIANDETONGSHI,YIBIAODESHURU-SHUCHUDESHUZIXINHAOYEYOUXIANCHANGZONGXIANCHUANSHU,YUERXIANZHIMONIBIANSONGQIXIANGJIN,DANXIANCHANGZONGXIANZHONGDESHUZIXINHAOSHISHUANGXIANGDE,ERQIECHUANSHUDESHIDUOGEXINHAO。XINHAOGUICHENGFUHEIEC-1158-2,BENAN,GEBAO。

  (3)显示板

  XIANSHIBANSHIYIGECONGCPUJIESHOUSHUJUDEWEIGONGHAOYEJINGXIANSHIQI,TAWEISIWEIBANSHUZIZHIHEWUWEIZIMUDELCD(YEJINGXIANSHIQI)。

  三、应用

  MUQIAN,ZAIZHONGGUOYIYOUSHIJIJIAGONGYEQIYEXUANYONGLESmartGONGSIDE302XIANCHANGZONGXIANKONGZHIXITONG。ANQINGSHIHUAJINGLUNCHANGSHIGUONEILVXIANCAIYONGSmart302XIANCHANGZONGXIANKONGZHIXITONGDECHANGJIA,QIXIANCHANGZONGXIANKONGZHIXITONGYINGYONGSHIYITURUTU2SUOSHI。

  PCIWEIGUOCHENGKONGZHIJIEKOUKA,TATONGGUOKASHANGDEOPRAM(SHUANGKOURAM)YUPCJICPUJINXINGKUAISUXINXIJIAOHUAN,CONGERSHIXIANPCJIYUSUOYOUXIANCHANGZONGXIANYIBIAOJIANDEXINXIJIAOHUAN,ERPCJIDECPUZHUYAOCONGSHIGUANLIGONGZUO。MEIKUAIKAKEJIE4GEXIANGHUDULIDETONGDAO,MEIGETONGDAOXIAKEGUAJIE4KUAIZONGXIANANQUANZHA(SB302)。

三星彩票代理  ZONGXIANANQUANZHACHULEQIZONGXIANANQUANGELIZUOYONGWAI,HAIQIZONGXIANGONGDIANHEZONGXIANZHONGFUQI(FANGDAQI)ZUOYONG。

  LD302SHIYIZHONGJIANGCHAYA、JUEYA、CHAYA、YEWEIHELIULIANGDENGGONGYEGUOCHENGCANSHUZHUANBIANWEIXIANCHANGZONGXIANSHUZIXINHAODEBIANSONGQI,TAHAIJUYOUKONGZHIGONGNENG,QIDAOLEJIDISHIYIBIAODEZUOYONG。

三星彩票代理  TT302KEJIUDISHIXIANWENDUDEZIDONGKONGZHI,TONGSHIBAWENDUXINHAOTONGGUOXIANCHANGZONGXIANCHUANSONGJICAOZUOZHAN。

  FI302SHIBAXIANCHANGZONGXIANSHUZIXINHAOZHUANHUANWEI4~20mADCDIANLIUXINHAODEZHUANHUANQI,IF302SHIBA4~20mA (DC)DIANLIUXINHAOZHUANHUANWEIXIANCHANGZONGXIANSHUZIXINHAODEZHUANHUANQI。ZHEILIANGGEZHUANHUANQIKESHIXIANCHANGZONGXIANKONGZHIXITONGYUCHANGGUIMONIKONGZHIXITONGXIANGLIAN。

  操作站采用普通工控机及AIMAX-WIN人机界面软件。

  SHUANGXIANGDEQUANSHUZITONGXINZONGXIANCONGKONGZHISHIDECAOZUOZHANYIZHIYANSHENDAOXIANCHANGYIBIAO,ZHONGJIANJIESHENGLEHENDUOA/D、D/ADENGHUANJIE,JIKETIGAOXITONGDEJINGDU,YOUKEJIANSHAOI/OKAJIQIANZHUANGKONGJIAN,YINERKEYIDADAJIANSHAOYUNXINGHEWEIHUFANGMIANDEFEIYONG。ZAIANQUANKEKAOXINGFANGMIAN,YOUYUKONGZHIGONGNENGXIAFANGZAIGECHUDEXIANCHANGZONGXIANYIBIAONEI,CONGERJIANGWEIXIANFENSAN,DADATIGAOLEXITONGDEKEKAOXING。

  四、结束语

  XIANCHANGZONGXIANKONGZHIXITONGDEYOUYUEXINGSHIBURONGZHIYIDE,YINCI,XIANGTT302ZHEIYANGDEXIANCHANGZONGXIANYIBIAOSHIHENYOUFAZHANQIANTUDEYIBIAO,TAJIANGSHICHUANTONGDECHUANGANQIHUOBIANSONGQIXIAOSHI,CONGERKAICHUANGYIGEGONGYEKONGZHIDEXINSHIDAI。