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ATS的选择及其在输气站场低压系统的应用
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作者 陈聪 李树山 +1 位作者 曲鹏 张雷 《化工自动化及仪表》 CAS 2015年第8期948-951,共4页
在介绍双电源转换开关(ATS)的定义和分类,并分析三、四极ATS应用范围的基础上,说明输气站场消防负荷配电箱、工艺区阀门配电箱和110k V变电站交流屏双电源切换,以及为分输站二级负荷供电的市电-发电机的切换中,ATS的极数及转换时间等参... 在介绍双电源转换开关(ATS)的定义和分类,并分析三、四极ATS应用范围的基础上,说明输气站场消防负荷配电箱、工艺区阀门配电箱和110k V变电站交流屏双电源切换,以及为分输站二级负荷供电的市电-发电机的切换中,ATS的极数及转换时间等参数的设计方案。 展开更多
关键词 双电源自动转换开关 输气站场低压系统 市电-市电双电源 市电-发电机双电源 极数转换时间
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Design and implementation of GM- APD array readout circuit for infrared imaging
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作者 吴金 袁德军 +3 位作者 王灿 陈浩 郑丽霞 孙伟锋 《Journal of Southeast University(English Edition)》 EI CAS 2016年第1期11-15,共5页
Based on an avalanche photodiode( APD) detecting array working in Geiger mode( GM-APD), a high-performance infrared sensor readout integrated circuit( ROIC) used for infrared 3D( three-dimensional) imaging is ... Based on an avalanche photodiode( APD) detecting array working in Geiger mode( GM-APD), a high-performance infrared sensor readout integrated circuit( ROIC) used for infrared 3D( three-dimensional) imaging is proposed. The system mainly consists of three functional modules, including active quenching circuit( AQC), time-to-digital converter( TDC) circuit and other timing controller circuit. Each AQC and TDC circuit together constitutes the pixel circuit. Under the cooperation with other modules, the current signal generated by the GM-APD sensor is detected by the AQC, and the photon time-of-flight( TOF) is measured and converted to a digital signal output to achieve a better noise suppression and a higher detection sensitivity by the TDC. The ROIC circuit is fabricated by the CSMC 0. 5 μm standard CMOS technology. The array size is 8 × 8, and the center distance of two adjacent cells is 100μm. The measurement results of the chip showthat the performance of the circuit is good, and the chip can achieve 1 ns time resolution with a 250 MHz reference clock, and the circuit can be used in the array structure of the infrared detection system or focal plane array( FPA). 展开更多
关键词 infrared 3D(three-dimensional) imaging readout integrated circuit(ROIC) Geiger mode avalanche photodiode active quenching circuit(AQC) time-to-digital converter(TDC)
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