基于STM32的轨道电路高压脉冲测量仪的设计

对于铁路来说准确的检测轨道占用情况是非常重要的,为了对铁路更精确的检测,设计了基于STM32的轨道电路高压脉冲测量仪,通过使用STM32作为控制芯片,可以精确的测量到脉冲的参数值,同时可以在LCD上面进行波形显示,显示界面分辨率高,而且数据测量准确,能够真实的反映出列车在轨道上的占用情况,保障铁路运行方面的安全、稳定。

Improvement of Electrical Performance of SOI-LIGBT by Resistive Field Plate

The electrical performance including breakdown voltage and turn-off speed of SOI-LIGBT is improved by incorporating a resistive field plate (RFP) and a p-MOSFET.The p-MOSFET is controlled by a signal detected from a point of the RFP.During the turning-off of the IGBT,the p-MOSFET is turned on,which provides a channel for the excessive carriers to flow out of the drift region and prevents the carriers from being injected into the drift region.At the same time,the electric field affected by the RFP makes the excessive carriers flow through a wider region,which almost eliminates the second phase of the turning-off of the SOI-LIGBT caused by the substrate bias.Faster turn-off speed is achieved by above two factors.During the on state of the IGBT,the p-MOSFET is off,which leads to an on-state performance like normal one.At least,the increase of the breakdown voltage for 25% and the decrease of the turn-off time for 65% can be achieved by this structure as can be verified by the numerical simulation results.

BTS75型便携式全自动绝缘油耐压试验仪

BTS75型便携式全自动绝缘油耐压试验仪是北京华泰科仪电子有限公司与奥地利BAUR公司合作生产出来的新型便携式全自动绝缘油试验仪器。该仪器是由BAUR公司转让技术、提供大部分元器件、培训一批生产技术人员，应中国电力部门和石化部门的需求做最优化的功能增加而设计出来的。