WOA100C线路描述
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A100C电表数据采集器WOA100C线路描述
A100C meter data collector WOA100C line description
本A100C电表数据采集器WOA100C(交流电源)是由一片ATMEG644(U1)的单片机经过一个光耦隔离电路(U9)和2芯的电缆接口来采集A100C电表的数据,同时,单片机把读到的数据保存在EEPROM(U6,U7)中,并通过TTL接口把采集到的数据通过GPRS模块(JM3)传送到后台服务器。
This A100C meter data collector WOA100C (AC) collected A100C meter’s data from a ATMEG644(U1) SCM which through a opto-isolation circuit (U9)and 2-conductor cable interfaces. At the same time, SCM saved the data in EEPROM(U6,U7), and using TTL interface to send the collection data to back-end server (throuh GPRS module (JM3)).
本A100C电表数据采集器WOA100C(交流电源)的230V的交流电源取自A100C电表,并通过一个内置的AC/DC 220V转9V的电源模块经一个LDO芯片(U2)转成DC3.7V的电压供给GPRS模块使用,再经过另一个LDO芯片(U5)转成DC3V的电压供给系统使用。
The 230V AC of A100C meter data collector WOA100C (AC) was
taken from A100C meter, and it through a built-in AC/DC 220V switch 9Vpower module to turn into DC3.7V voltage (through a LDO chip(U2)), supply GPRS module to use, and through another LDO chip (U5) switch to DC3V voltage that supply to system.
本产品的天线接口由了一根具有SMA接头的天线馈线和一根阻抗为50Ω,增益为3dBi的外置900M/1800M的天线组成。
The antenna interface of production is made by a antenna feed (with SMA interface) and a external 900M/1800Mantenna (impedance of 50Ω, gain 3dBi).。