静水压试验机的压力测量系统及计量方法

文章简略地叙述了静水压试验机的压力测量系统,分析了压力传感器的原理和记录仪的应用,介绍了压力测量系统的校验方法和经验,介绍了压力传感器、PLC 和记录仪的校准方法。     

基于无源伺服传感器的振动测量系统

针对工程领域（超）低频的振动问题，介绍了一种基于无源伺服传感器的振动测量系统。阐述了系统的特点和组成，着重分析了无源伺服反馈传感器的特点和原理，构建了传感器的数学模型，并比较了反馈前后传感器性能的差异，分析了反馈后传感器的基本参数。给出了部分测试数据和应用实例，分析了系统的抗干扰问题。最后，给出了一些结论。     

无线温湿度记录仪的校准方法研究

无线温湿度记录仪或无线温度记录仪是目前医疗行业验证药品储存箱、冰箱、灭菌器及生化培养箱等设备的温度、湿度参数性能的重要仪器,其准确性直接影响了实验或生产设备的性能判断.所以,对无线温湿度记录仪进行周期性校准必不可少.本文参考温度采集仪校准规范和湿度传感器校准规范,提供了一种校准方法,利用标准铂电阻和冷镜式露点仪作为标准器,实现了无线温湿度记录仪的量值溯源.对实验结果进行分析,验证了此实验方法的可行性.     

自适应结构振动主动控制的最佳效果实现

推导了自适应结构振动控制中不同控制目标函数下，次级力源的最优强度以及所能获得的最佳振动和声幅抵消化计算公式，通过理论和计算分析讨论限次级振源和误差传感器的选择和布放规律。研究结果表明，在次级振源和误差传感器的位置选择中，结构模态振型间的相位关系与幅度同样重要。     

一种汽车行驶记录仪检定装置校准方法

正0引言汽车行驶记录仪检定装置是以GPS速度传感器为测速单元,可以对汽车行驶记录仪进行实车测试和模拟测试的测试仪器。我国自2015年3月起实施了GB/T 21861-2014《机动车安全技术检验项目和方法》,该标准规定公路客车、旅游客车、危险货物运输车、专用校车等应安装符合规定的汽车行驶记录仪~([1-2])。全国大部分机动车检测机构都已按要求购置汽车行驶记录仪检定装置,用于对车辆行驶记录仪各参数进行检定。     

压电梁振动的多输入多输出主动控制

对表面上贴有多个用作驱动器和传感器的压电陶瓷片的“压电梁”结构，导出了从驱动器到传感器的频响函数公式，作为压电结构设计和振动控制的数学模型。提出了压电梁对缓变周期扰动振动环境的多输入多输出振动抑制方法。     

基于MEMS的结构振动无线传感器研究

针对结构振动监测现场传感器布线困难的问题，提出了一种基于MEMS微加速度计的可编程无线振动传感器集成设计方法，并进行了模拟试验。     

基于隧道效应的纳米级振动检测及补偿

微振动是提高纳米测量精度的主要障碍，为了减小微振动在STM测量中的影响，需要对微振动进行隔离和检测．因此，抗振、隔振及振动补偿技术成为了纳米测量领域的一大分支．设计了基于隧道效应的纳米级振动传感器，该传感器具有很高的灵敏度和分辨力，并用设计的振动传感器进行了纳米级振动检测试验．在隧道状态下．观察隧道间隙对外界微振动的响应情况，并用测量结果实时对STM测量进行补偿．结果表明，基于隧道效应的测振传感器具有很好的响应特性和良好的幅频特性，并且可以进行STM的振动补偿．     

振动传感器温度响应的激光绝对校准

介绍了将激光测振技术应用于振动传感器温度响应测试中，从而实现高精度绝对校准的原理、方法、装置和不确定度分析。     

监测监控系统在避难硐室中的应用

主要介绍监测传感器的选用方法,以及无纸记录仪在避灾硐室监测系统中的应用。     

Fundamental study of odor recorder for multicomponent odor using recipe exploration method based on singular value decomposition

A new method for the odor recorder, electronically recording the recipe of odors or scents made up of many components, was proposed. Although apple flavors have been recorded with a mixture of five components using the odor recorder in previous work, the number of odor components should be increased to expand the applicable range of odors. Since the collinearity problem of the odor sensor array became apparent with the increase of components, a new method based on variable transformation using singular value decomposition was developed in this paper, to extract the effective subspace of the sensor outputs for recipe exploration. As a result, the sensor-array response pattern of the reproduced odor, with the eight-component recipe, almost agreed with that of the target apple flavor. Furthermore, human sensory tests revealed that the smell of the approximated odor was identical to that of the target flavor.     

小水池中延时爆破对地表振动的测试与分析

为了研究水下延时爆破对地表振动的影响,在某一小水池中,采用不同延时药包组合引起地表振动,对其进行测试。试验中各组合总药量相同,药包个数不同,对地面产生的振动速度和主振频率采用UBOX-5016型振动自记仪进行测试和分析。研究并发现毫秒延时爆破能有效降低爆破振动,通过选出的较优延时组合,初步估计合理的延时间隔为25~50 ms。     

The effect of coplanar sensor spacing on determining the angular acceleration of vehicles

Vehicle vibration presents challenges to a packaged product that is inevitable in any distribution environment. Typically products are tested in only a single, vertical axis; researchers have shown that there is energy in all six axes of motion. In this work, we study the recording methods of the six degrees of freedom (6DOF) motion of a transport vehicle. Using a co-planar sensor array, three tri-axial linear accelerometers and three angular rate sensors mounted in a L shape are used to calculate the rotational accelerations that occur in the back of a vehicle. Missing from prior work is a scientific study designed to determine the minimum sensor spacing necessary to accurately capture the yaw, pitch, and roll of transport vehicles. A sensitivity study is conducted to determine the effect of the misplacement and misorientation of sensors on the angular acceleration calculation. A laboratory study is used to determine the distance error begins to accumulate in the angular acceleration calculation in response to a sinusoidal input. A field study is conducted to calculate the rotational motions of a vehicle on a rough road. It is found that a mounting fixture is valuable in assuring the necessary sensor placement accuracy needed to accurately determine angular accelerations of a truck. Additionally, laboratory and field analysis show that as the sensor spacing location approaches the origin sensor, angular acceleration calculation error increases due to a loss in distinctiveness. It is desired for a close sensor mounting array, but there is a trade off between measurement accuracy and compactness of the recording array. A limit exists where the sensors can not be mounted in close proximity.     

Analysis of in‐flight vibration of a twin‐engine turbo propeller aircraft

A data recorder was utilized to record in‐flight vibration of a twin engine turbo propeller (feeder) aircraft. The data recorded produced power spectral density (PSD) profiles which are currently used in laboratory settings to drive vibration tables in order to simulate a particular vehicle type. Overall Grms values were averaged and compared to previous research studies. The data collected from this research study could be utilized for packaging research when developing products and packages that will pass through a distribution cycle which includes transportation via a feeder aircraft. One example of this type of distribution cycle is the small parcel shipping environment. The PSD profiles which were analyzed from this research could simulate in‐flight aircraft vibration of the aircraft chassis in a laboratory environment. This will enable further research in the air transport environment. Copyright © 2009 John Wiley & Sons, Ltd.     

深孔内含水炸药爆速和相对爆压的现场测试研究

长沙矿冶研究院和武钢大冶铁矿、本钢南芬露天铁矿合作进行了深孔内含水炸药爆速和相对爆压的测试研究。测试结果表明,运用改进的探针法—数字爆速仪和电气石压电晶体传感器－ 瞬态波形记录仪两种方法,可为改善破碎质量和大规模干扰降震提供可靠的数据     

基于F-P滤波器的光纤光栅振动传感解调系统的研究

光纤光栅传感技术较其它传感技术有其独特的优点,在振动传感中有很大的发展前景。文章提出了一种利用法布里-玻罗腔作为滤波器,将FBG传感振动信号产生的Bragg波长的漂移转化为F-P滤波器透过光强度的变化来传感解调的方法,通过实验验证,可知该方法能克服相位型光纤振动传感器和匹配光纤光栅振动传感器的一些缺点,性能稳定,价格低廉,精确度高,具有较高的实用价值,有望在实际应用中推广。     

深孔内含水炸药爆速和相对爆压的现场测试研究

长沙矿冶研究院和武钢大冶铁矿、本钢南芬露天铁矿合作进行了深孔内含水炸药爆速和相对爆压的测试研究。测试结果表明,运用改进的探针法—数字爆速仪和电气石压电晶体传感器－ 瞬态波形记录仪两种方法,可为改善破碎质量和大规模干扰降震提供可靠的数据     

基于太阳能供电的无线振动传感器试验研究

针对铁路、桥梁、船舶等结构振动巡查中监测节点的自供电问题,研制了一种利用太阳能供电的振动信号无线传输模块.并对一悬臂梁的振动信号进行了室外发射与接收试验.试验结果与理论计算结果基本吻合,验证了设计方案的可行性.     

MINI-SEIS地震仪在爆破振动监测中的应用

介绍了MINI-SEIS地震仪在实践中的应用情况;在爆破振动测试中,传感器的固定是一个重要环节,因此用MINI-SEIS通过对比试验研究了传感器的不同固定方式对测试结果的影响,分析结论可用于其它类型的振动传感器的爆破振动测试.