排列五奇偶走势图

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常见的自动抄表通讯方式

文章作者:宁波市江北水表厂 发布时间:2010-09-21

常见的自动抄表通讯方式
    (1)按信道介质分,常见的自动抄表通讯有光纤通讯、电话线通讯和无线通讯三种方式。

排列五奇偶走势图    a)GUANGXIANTONGXUNJUYOUPINDAIKUAN、CHUANSHUSULVGAO、CHUANSHUJULIYUANHEKANGGANRAONENGLIQIANGDENGTEDIAN,FEICHANGSHIHESHANGCENGTONGXUNWANGDEYAOQIU。SUIZHEGUANGXIANJISHUDEFAZHANHEGUANGFANYINGYONG,ZIDONGCHAOBIAOXITONGZHONGYOUKENENGGENGDUODISHIYONGGUANGXIAN。

    b)由于电话在城镇的迅速普及,利用现有电话网进行数据通讯是一个经济有效的方案。利用电话网通讯,只需在数据集中器和工作主站处加装调制解调器即可,其传输速率可达56Kbps。但电话线通讯的线路接通时间较长,一般要几秒到十几秒。还有,我国的广大乡村、小城镇还没普及电话。
  
排列五奇偶走势图     c)对于分布分散的集中器,利用无线方式进行数据通讯是一种较好的选择。目前我国已有车载无线通讯自动抄表系统投入运行。但无线通讯方式需要慎重选择频点,并需申请频点使用权。

排列五奇偶走势图    (2)RUOANLIANJIEFANGSHIFEN,ZEZIDONGCHAOBIAOXITONGDETONGXUNFANGSHIZHUYAOYOUXINGXINGHEZONGXIANXINGLIANJIEFANGSHI。

排列五奇偶走势图    a)XINGXINGLIANJIETONGXUNSHIYIGONGZUOZHUZHANWEIZHONGXIN,YIXINGXINGFASANDEXINGSHIFENBIETONGGUOTONGXUNXINDAO,YUFENSANYUGEDIDEJIZHONGQILIANJIE,XINGCHENG1DUINDELIANJIEXINGSHI。ZHEIZHONGFANGSHIXIAXINDAOTONGXUNSHUJULIANGDA,YAOQIUYOUYIDINGDECHUANSHUSULVHEPINKUAN。

    b)ZONGXIANXINGTONGXUNYIYITIAOCHUANXINGZONGXIANLIANJIEGEFENSANDECAIJIQIHUODIANDUBIAO,SHIXINGGEJIEDIANDEHULIAN。ZHEIZHONGFANGSHIXIA,XINDAOSHANGJIEDIANDUO,CHUANSHUSULVYEBUHUIHENGAO,YIBANYONGYUDICENGDEDIANNENGSHUJUDECAIJI。CHANGJIANDEYOURS-485ZONGXIANWANGHEDIYADIANLIXIANZAIBOTONGXUNWANG。YOUYUDIANLIXIANWANQUANYOUDIANLIBUMENKONGZHI,RUGUOYONGDIANLIXIANSHISHIZAIBOTONGXUN,BUXUYAOZAITOUZIPUSHETONGXUNXIANLU,BUJINKEDADAJIEYUEZIJINTOURU,QIEHAIJUYOUWEIHULIANGXIAODETEDIAN;FOUZE,YONGDIYADIANLIXIANZUOTONGXUNXINDAOKEYISHIXIANLINGHUODE“JICHAJIYONG”。YOUQISHIJINNIANLAIKUOPINTONGXUNJISHUDEJIAOCHENGGONGYINGYONG,SHIDEDIYADIANLIXIANZAIBOTONGXUNYUELAIYUEDUODIYONGYUZIDONGCHAOBIAOXITONG。LIYONGDIYADIANLIXIANZUOWEIZIDONGCHAOBIAOXITONGDEDICENGSHUJUTONGDAO,CHENGBENDI、FANGBIANZHUNQUE。

    TONGXUNFANGSHIDEXUANZESHISHEJIZIDONGCHAOBIAOXITONGDESHOUYAORENWU,TAZHIJIEGUANXIDAOXITONGDEXINGNENG。JUTIQUEDINGTONGXUNFANGSHISHIXUYAOZONGHEKAOLVXITONGMIANDUIDEDUIXIANG、YONGHUDEFENBU、YONGHUDESHULIANG、DILITIAOJIAN、QIWANGDADAOYIDEMUBIAOYIJIXITONGDEKUOZHANSHENGJIHEYUQITAWANGLUODEJIANRONG,DENGDENG。YINCI,SHANGSHUDEGEZHONGTONGXUNFANGSHIBUYINGGAISHIGULIDE,ERQIERENHEYIZHONGTONGXUNFANGSHIZAIBUTONGDEXITONGZHONGDEYINGYONGXIAOGUOYEBUJINXIANGTONG。

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