WBV/ I 121 高速寬帶跟蹤型電量隔離傳感器， 是針對(duì)高壓、大電流等強(qiáng)電， 或負(fù)載能力很差的弱電， 或幅值很小的信號(hào)， 為克服其干擾、不宜直接與系統(tǒng)連接而設(shè)計(jì)的， 分電壓隔離或電流隔離2 類。其工作原理是： 當(dāng)電壓（ 電流） 輸入信號(hào)送至輸入電路后， 被轉(zhuǎn)換成標(biāo)準(zhǔn)電壓， 并賦予較強(qiáng)的驅(qū)動(dòng)能力； 光電隔離電路實(shí)現(xiàn)輸入信號(hào)的線性變換及隔離處理； 輸出電路將信號(hào)放大， 輸出具有較強(qiáng)驅(qū)動(dòng)能力的標(biāo)準(zhǔn)電壓以跟
蹤輸入信號(hào)。傳感器內(nèi)部還配備了DC/ DC 轉(zhuǎn)換器， 從輔助電源+E 提取能量供輸入電路使用。并提供了傳感器輸出端接至后續(xù)設(shè)備的高速A/ D 等電路，信號(hào)由計(jì)算機(jī)等控制采樣、處理，以及相應(yīng)傳遞函數(shù)的應(yīng)用示例。
關(guān) 鍵 詞 ： 電量傳感器； 寬帶跟蹤； 原理； 應(yīng)用
Abstract: Aiming at the high voltage, strong current, weak-over-load feeble sign, small-amplitude sign, overcoming the system disturb, WBV/ I121 electrical isolation with high-speed wide band track sensor is designed. The sensor is divided into current isolation and voltage isolation two classes. The working principium is: the voltage (current) sign is sent to the input circuit, it is transformed to standard voltage (current) sign, and has powerful drive power. The linear transform of the input sign and isolation processing is achieve d in photoelectric isolation circuit. The output circuit magnifies the sign and outputs the standard
sign or track sign. The sensor that has DC/ DC transformer supplies power that is obtained from additional electrical source to the input circuit. The join circuit between the output port of sensor and the high-speed A/ D interface, the sign sampling and sign processing with computer, and the application example for correlative transfer function are presented.
Key Words: Electrical isolation sensor; Wide band track; Principium; Application