现有的接触式验电需分电压等级使用不同的验电设备,非接触式验则无法识别电压等级,而电压等级直接决定了带电作业安全距离。电压等级的非接触识别对验电设备的非接触验电、近电预警有重要意义。文章基于距离和电场测量,利用多项式回归...现有的接触式验电需分电压等级使用不同的验电设备,非接触式验则无法识别电压等级,而电压等级直接决定了带电作业安全距离。电压等级的非接触识别对验电设备的非接触验电、近电预警有重要意义。文章基于距离和电场测量,利用多项式回归分析理论研究了一种电压等级的非接触识别方法。通过采集10 k V、35k V和110 k V三种电压等级周围的电场和距离数据,分别求取三种拟合函数,进行多项式回归分析,从而实现电压等级的判别。同时研制了电压等级非接触识别装置,对该方法进行识别验证,实验结果证明能够对三种电压等级实现较好地识别。展开更多
A dinitrophenyl hydrazone colorimetric anion sensor (receptor 1) was synthesized and its recognition properties towards various anions were investigated by naked eye observation and spectroscopic methods, namely UV-...A dinitrophenyl hydrazone colorimetric anion sensor (receptor 1) was synthesized and its recognition properties towards various anions were investigated by naked eye observation and spectroscopic methods, namely UV-vis and 1H NMR titrations in DMSO. The addition of AcO?, F? and H2PO4? to receptor 1 resulted in marked red shift of the charge-transfer absorbance band (Δλ=91 nm, 407 nm to 498 nm) concomitant with a 'naked-eye' detectable colour change from yellow to pink. However, both the colour and spectral changes were reversible by the addition of cations (MII) of 3d5-10 as well as CdII, HgII, MgII and CaII. Subsequently, complementary IMP/INH logic functions based on colour and spectral switching (ON/OFF) were affirmed. The sensor can, thus be utilized as a colorimetric molecular switch modulated by F?/MII.展开更多
文摘现有的接触式验电需分电压等级使用不同的验电设备,非接触式验则无法识别电压等级,而电压等级直接决定了带电作业安全距离。电压等级的非接触识别对验电设备的非接触验电、近电预警有重要意义。文章基于距离和电场测量,利用多项式回归分析理论研究了一种电压等级的非接触识别方法。通过采集10 k V、35k V和110 k V三种电压等级周围的电场和距离数据,分别求取三种拟合函数,进行多项式回归分析,从而实现电压等级的判别。同时研制了电压等级非接触识别装置,对该方法进行识别验证,实验结果证明能够对三种电压等级实现较好地识别。
文摘A dinitrophenyl hydrazone colorimetric anion sensor (receptor 1) was synthesized and its recognition properties towards various anions were investigated by naked eye observation and spectroscopic methods, namely UV-vis and 1H NMR titrations in DMSO. The addition of AcO?, F? and H2PO4? to receptor 1 resulted in marked red shift of the charge-transfer absorbance band (Δλ=91 nm, 407 nm to 498 nm) concomitant with a 'naked-eye' detectable colour change from yellow to pink. However, both the colour and spectral changes were reversible by the addition of cations (MII) of 3d5-10 as well as CdII, HgII, MgII and CaII. Subsequently, complementary IMP/INH logic functions based on colour and spectral switching (ON/OFF) were affirmed. The sensor can, thus be utilized as a colorimetric molecular switch modulated by F?/MII.