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智能电表工作原理和结构

2012-02-23 09:30 作者: 来源: 本站 浏览: 1,497 次 我要评论(14条) 字号:

摘要: 当前,国内智能电度表从构造上大致可分为机电一体式和全电子式两大类。机电一体式,即在原机械式电度表上附加必然的部件,使其既能完成所需功用,又能降低造价且易于装置,一般来说其设计方案是在不毁坏现行计量表原有物理构造,不改动其国度计量规范的根底上加装传感安装酿成在机...

当前,国内智能电度表从构造上大致可分为机电一体式和全电子式两大类。机电一体式,即在原机械式电度表上附加必然的部件,使其既能完成所需功用,又能降低造价且易于装置,一般来说其设计方案是在不毁坏现行计量表原有物理构造,不改动其国度计量规范的根底上加装传感安装酿成在机械计度的还亦有电脉冲输出的智能电表,全电子式则从计量到数据处置都采用以集成电路为中心的电子器件,然后作废了电表上长时间运用的机械部件, 元器件查询  与机电一体化电度表比拟具有电表体积减小,牢靠性添加,愈加准确,耗电量削减,而且出产工艺大大改善,不用只在原有意义上的专业电度表厂出产等优胜性,最终会替代带有机械部件的计量表。

1、机电一体式的电度表

第一类机电连系的电度表,是在原有的机械表的根底上,加装电子式计数安装和响应的节制、通信电路,或加上IC卡读写接口以完成主动计量计费和节制;其根本构造是在原有机械电度表的转盘上打孔或涂(贴)上能接收光线的资料。电子元件型号查询        这类电度表因为其计量道理没有改动,其计量精度和特征与机械表完全一样,而本钱相对较高,其优势在于能充沛应用现已装置运用中的很多的机械电度表,且其计量道理为群众所熟习而轻易承受。

另一类机电连系的电度表则是采用电子式计量电路在取得数字式脉冲旌旗灯号后,经过微型电机驱动字码转轮获得电能计数 值,     电子元件邮购    这种构造是最简练可行的电子式电度表的方案,但遗憾的是其对计量电路的要求较高,即要求一切的表都按一个固定的比例将电能值转换为对应数目的数字脉冲,才干按准确的速度驱动微电机以转变字轮。这个比例就是所谓的电表常数(imp/kWh),因为电路中所用的决议脉冲速度的准时元件大都是参数离散性较大的阻容元件,  电子元器件大全为了包管电度表的计量精度和产物的一致性,就必需在出产进程中增强对元件的挑选和对半制品的调校,也就是说要添加响应的人力物力的投入并要延伸出产周期,然后使电度表的出产费用和本钱有所添加。别的这种构造的电度表在数据搜集和用户缴费方法上与老式的机械表没什么区别,应属裁减产物。

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