For more than a century, overhead lines have been the most commonly used
technology for transmitting electrical energy at all voltage levels, especially on the
highest levels. However, in recent years, an increase in both the number and length
of HVAC cables in the transmission networks of different countries like Denmark,
Japan or United Kingdom has been observed. At the same time, the construction of
offshore wind farms, which are typically connected to the shore through HVAC
cables, increased exponentially.
標(biāo)簽：
Electromagnetic
Transients
Cables
Power
in
上傳時(shí)間：
2020-06-07
上傳用戶：shancjb
超聲波換能器作為一種實(shí)用的檢測(cè)手段，能實(shí)現(xiàn)聲波所攜帶的信息和電能之間轉(zhuǎn)換。它的性能優(yōu)良，價(jià)格低廉，操作方便，易于調(diào)試，因此在工農(nóng)業(yè)生產(chǎn)中發(fā)揮著重要的作用。但目前換能器驅(qū)動(dòng)電路的發(fā)射頻率多為40 kHz，本文針對(duì)1 MHz的超聲波換能器電路進(jìn)行了設(shè)計(jì)，主要介紹了它的發(fā)射驅(qū)動(dòng)電路和接收驅(qū)動(dòng)電路的設(shè)計(jì)方案，并對(duì)它們的功能進(jìn)行了詳細(xì)地說(shuō)明。最后搭建實(shí)驗(yàn)平臺(tái)，并對(duì)電路的輸入、輸出模塊進(jìn)行了測(cè)試。實(shí)驗(yàn)結(jié)果表明，換能器電路運(yùn)行良好，可以為超聲波高精度測(cè)量領(lǐng)域的應(yīng)用提供參考。As a practical means of detection, ultrasonic transducer can realize the conversion between theinformation carried by sound wave and electric energy.It has the advantages of excellent performance,low cost, convenient operation and debugging, so plays an important role in industrial and agriculturalproduction.However, the transmitting frequency of the driving circuit for most transducer is 40 kHz.Thecircuit of 1 MHz ultrasonic transducer is designed In this paper. It mainly introduces the emissive drivingcircuit and the receiving circuit design and the detailed function of them. Finally, the experimentalplatform is built, and the circuit of input and output were tested. Experiments show that the transducer＇ s...
標(biāo)簽：
換能器
驅(qū)動(dòng)電路
上傳時(shí)間：
2022-04-28
上傳用戶：
