Measurement System of Uniformity between Breech Horizontal Platform and Datum Tube Axis of Rocket Artillery

The purpose of this development is to detect the parallelism between the breech horizontal platform and the datum tube axis of the rocket artillery. The located aiming mechanism at the muzzle and located adjustment mechanism at the breech are designed in the system. Besides those, the system also uses an autocollimator with accuracy of 1″ and a collimating mirror together to determine the axis of the datum tube. An electronic level with accuracy of 2″ is employed to measure and display the value of the included angle and the parameter of the inclined direction. The entire accuracy of this system is σ≤± 9.1″. This paper describes the composition and the operating principle of the system and analyzes the accuracy. The development of this system supplies reliable measurement method for new rocket artilleries and artilleries, and this technology is of a good application prospect.     

大坝变形自动监测仪器

混凝土大坝的变形,尤其是坝基和拱座的变形,是衡量工程安全与否的一个重要指标。变形自动监测仪器与人工测读的仪器相比,具有精度高、时间快的优点。本文参考国外资料,提出测斜仪、钻孔变位计、垂线自动监测仪等三种国内外正在试用的电子仪器。将有助于提高并改善大坝设计的经济性和安全性。     

卷烟信息网络防伪系统的构建及应用

介绍了卷烟信息网络防伪管理系统构建原理、技术特点和功能 ,及其在烟草行业中的应用。     

高分辨率电阻率测井仪在薄层评价中的应用

传统的测井仪器无法克服纵向分辨率和径向探测深度这一矛盾，高分辨率电阻率测井仪（HDRT）测量精度好、探测深度大且垂向分辨率高，能够准确识别薄互层、评价薄油气层，准确记录油层厚度，可为精细描述油气田地下地质状态提供更多依据。     

Procedure for Measuring Low Concentrations of H2 and H2S Above a Water Surface

A simple measuring procedure for low concentrations of H₂ and H₂S (at the level of ppm fractions) above the surface of water by using sensitive gas analyzers is suggested. The procedure is easily accomplished in conditions outside the laboratory (under field conditions).     

舰船导航信号发生器虚拟化设计

介绍了基于PC总线的便携式舰船导航信号发生器虚拟化设计，着重叙述该仪器硬件设计、基于虚拟仪器开发平台LabWindows／CVI的软件设计。     

单线复用技术在水文巡测设备中的应用

为了解决水文巡测设备中数据传输的可靠性，电力载波通讯中的单频阻波器技术被应用到巡测设备上。此法简单易行，稳定可靠。     

IMAGE仪器MRX站A/D板电路分析及故障排除

通过对IMAGE仪器MRX站A／D板的电路分析，利用综合测试和分析诊断程序，并借助示波器和万用表，针对不同的故障，找出A／D板产生故障的根源，切实有效地排除故障。     

基于虚拟仪器的虚拟实验模块化研究

由于计算机网络技术和微电子技术的迅速发展和普及,基于虚拟仪器的虚拟实验已经从初期的尝试走向更加完善的开发和应用,从一定程度上弥补了传统实体实验的不足。另一方面,在虚拟实验的设计开发和使用过程中,虚拟设备存在着重复开发、重用性差等问题,而模块化虚拟实验单元具有标准化、灵活性、用户自主性等特点,为这一问题的解决提供了有效的途径,具有良好的发展前景和实际应用价值。     

Influence of a Jump in the Power of Laser Radiation on Its Measurement

Simulation and investigation of the effect of an isolated jump on realization of the unit of power of laser radiation and dissemination of the size of the unit are considered. Results are obtained by means of a newly developed algorithm that characterizes the behavior of the mean value of a signal and the standard deviation of a system as functions of the parameters of a jump in the power of laser radiation and the length and amplitude of the jump. If information concerning the time when a jump occurs is available, the proposed algorithm makes it possible to take into account how a jump affects the ultimate result of a measurement.