介绍了一种基于CAN总线的煤矿井下风机监控系统。该系统采用CAN总线将矿井风机多电机综合保护器互联构成CAN总线监控网络,利用USB-CAN网络适配器对CAN总线网络进行监控;运行PC端实时监控平台程序,采用C/S模式连接到服务器的数据库SQL Se...介绍了一种基于CAN总线的煤矿井下风机监控系统。该系统采用CAN总线将矿井风机多电机综合保护器互联构成CAN总线监控网络,利用USB-CAN网络适配器对CAN总线网络进行监控;运行PC端实时监控平台程序,采用C/S模式连接到服务器的数据库SQL Server 2000,可实时显示、保存、查询、打印监控信息。展开更多
In the first paper of two referring to the TEXUS 50 campaign using micro dual wavelength spectrometers (MDWS) we kinetically determined the threshold1 for GIACs (gravity-induced absorption changes) in Phycomyces to be...In the first paper of two referring to the TEXUS 50 campaign using micro dual wavelength spectrometers (MDWS) we kinetically determined the threshold1 for GIACs (gravity-induced absorption changes) in Phycomyces to be lower than 25 × 10−3 g (http://file.scirp.org/pdf/JMP_2015082810060783.pdf). In this second paper, we attended measurement of GIAC-spectra. Unexpectedly, during the upwards movement, i.e. the hypergravity phase up to top acceleration values reaching 11.6 g at 35.4 s after liftoff we observed transient GIAC-spectra ranging from 380 to 750 nm. In addition, during the whole acceleration phase of 68.2 s, another component near 700 nm develops which remains stable during the whole “free fall trajectory parabola” for 381.3 s. The subsequent reentry of the rocket leads to extraordinary deceleration values up 37.8 g, completely destroying Phycomyces sporangiophores excluding their spectral measurement. During the microgravity phase and by centrifuge operation we were unable to detect any GIAC-spectra (in contrast to kinetic MDWS-measurements, first paper).展开更多
文摘介绍了一种基于CAN总线的煤矿井下风机监控系统。该系统采用CAN总线将矿井风机多电机综合保护器互联构成CAN总线监控网络,利用USB-CAN网络适配器对CAN总线网络进行监控;运行PC端实时监控平台程序,采用C/S模式连接到服务器的数据库SQL Server 2000,可实时显示、保存、查询、打印监控信息。
文摘In the first paper of two referring to the TEXUS 50 campaign using micro dual wavelength spectrometers (MDWS) we kinetically determined the threshold1 for GIACs (gravity-induced absorption changes) in Phycomyces to be lower than 25 × 10−3 g (http://file.scirp.org/pdf/JMP_2015082810060783.pdf). In this second paper, we attended measurement of GIAC-spectra. Unexpectedly, during the upwards movement, i.e. the hypergravity phase up to top acceleration values reaching 11.6 g at 35.4 s after liftoff we observed transient GIAC-spectra ranging from 380 to 750 nm. In addition, during the whole acceleration phase of 68.2 s, another component near 700 nm develops which remains stable during the whole “free fall trajectory parabola” for 381.3 s. The subsequent reentry of the rocket leads to extraordinary deceleration values up 37.8 g, completely destroying Phycomyces sporangiophores excluding their spectral measurement. During the microgravity phase and by centrifuge operation we were unable to detect any GIAC-spectra (in contrast to kinetic MDWS-measurements, first paper).
