AX—D311是款超薄型、全数字化的7．1声道AV放大器。它兼容Dolby Digital EX／DTS—ES／Dolby Pro LogicⅡx等环绕声解码功能，并且运用到自家的DEUS数字放大技术，内置放大器的输出功率为110W×7（6Ω）。此外，面板上附带的USB端...AX—D311是款超薄型、全数字化的7．1声道AV放大器。它兼容Dolby Digital EX／DTS—ES／Dolby Pro LogicⅡx等环绕声解码功能，并且运用到自家的DEUS数字放大技术，内置放大器的输出功率为110W×7（6Ω）。此外，面板上附带的USB端口还可以用来连接个人电脑，对其中的音乐文件予以播放。展开更多
Introducing a System-on-Chip （SoC） microcontroller （C8051F350） into a ceramic pressure sensor has resulted in the design of a intelligent sensor. An improved algorithm for digital phassensitive detection is used ...Introducing a System-on-Chip （SoC） microcontroller （C8051F350） into a ceramic pressure sensor has resulted in the design of a intelligent sensor. An improved algorithm for digital phassensitive detection is used to perform lock-in amplification of the sensor signal. The compensation for the sensor error is realized by the detection of the sensor＇s supply voltage and working temperature. The system also has the function of short/open circuit fault detection and can ommamicate with other digital equipment through an RS-485 communication interface. In the design, full utilization of the SoC microcontroller＇ s internal resource results in the simple hardware structure. Experimental results show that the error of the sensor is less than 0.5% at range ratio 1 ： 10. Employing the microcontroller and using lock-in amplification algorithm are an effective method for achieving an intelligent sensor of slowly-varying physical quantities, thereby improving the measuring accuracy and performance.展开更多
文摘AX—D311是款超薄型、全数字化的7．1声道AV放大器。它兼容Dolby Digital EX／DTS—ES／Dolby Pro LogicⅡx等环绕声解码功能，并且运用到自家的DEUS数字放大技术，内置放大器的输出功率为110W×7（6Ω）。此外，面板上附带的USB端口还可以用来连接个人电脑，对其中的音乐文件予以播放。
基金supported by Research Project of "SUSTSpring Bud"(No.2008BWZ042)from Shandong University of Science and Technology
文摘Introducing a System-on-Chip （SoC） microcontroller （C8051F350） into a ceramic pressure sensor has resulted in the design of a intelligent sensor. An improved algorithm for digital phassensitive detection is used to perform lock-in amplification of the sensor signal. The compensation for the sensor error is realized by the detection of the sensor＇s supply voltage and working temperature. The system also has the function of short/open circuit fault detection and can ommamicate with other digital equipment through an RS-485 communication interface. In the design, full utilization of the SoC microcontroller＇ s internal resource results in the simple hardware structure. Experimental results show that the error of the sensor is less than 0.5% at range ratio 1 ： 10. Employing the microcontroller and using lock-in amplification algorithm are an effective method for achieving an intelligent sensor of slowly-varying physical quantities, thereby improving the measuring accuracy and performance.
