便携式PPM性能测试装置的设计

该测试装置是一种用于柱塞泵与柱塞马达（Piston Pump ＆ Motor）液压试验台的便携式性能测试装置。把该装置与HEDLAND公司生产的Flo—teeh系列的涡轮流量传感器连接,可以对温度、流量、压力进行测量,并通过上位机软件的数据处理,可以得出被测PPM的性能报告。该装置基于C8051F206单片机,采用CP2102实现了USB的功能,该装置具有精度高、噪声低、抗干扰能力强等特点,经实际使用证明本装置具有很强的市场推广价值。     

基于无线技术的液压油泵测试装置设计

研制了一种基于无线技术的液压油泵测试装置,该装置能够在不拆卸液压设备且不影响液压油泵正常工作的情况下,对液压油泵在正常运行过程中的工作状态进行实时监测,确保液压油泵安全工作.采集的数据可以通过蓝牙传到地面系统,通过对温度、压力、流量等数据的分析处理,画出压力-流量曲线,并于标准曲线相比较,可诊断液压油泵是否出现故障等.     

发动机检测仪检定装置的示波灵敏度检定设计

本文介绍了发动机检测仪检定装置的示波灵敏度电路设计。该电路由锁相环芯片CD4 0 4 6、十进制计数器CD4 5 18、低通滤波器MAX2 93和一些电阻、电容构成。电路设计合理 ,实际使用效果好     

The use of a portable electronic device in accident dosimetry

The use of a portable electronic device in accident dosimetry has been investigated. The thermoluminescence properties of a surface-mount alumina-rich ceramic resonator from a USB flash drive were investigated. The following characteristics were verified: the absence of a zero-dose signal, gamma dose response, dose recycling behaviour, fading and optical bleaching. Finally, this component has been successfully used to determine a simulated accident dose (1 d following the irradiation event). It is concluded that it should be possible to perform rapid and reliable accident dose assessments with such components using conventional thermoluminescence dosimetry equipment.     

Far infrared emission and portable testing device of fine powders

In order for industrial and mining enterprises to fast detect the quality of fine mineral powders with far infrared emission, a simple testing model was set up according to the relationship between the emission intensity of powders and their surface temperature. The corresponding testing device was designed and assembled into three parts containing Constant Temperature Heating Part, Temperature Measuring Part and Sample Loading Part. By using the tourmaline mineral powders with far infrared emission as the research object and combining Fourier transform infrared spectroscopy, the calibration for the testing device was carried out. The results showed that the far infrared emission intensity of the tourmaline powders with different mining area and particle size could be judged. The testing results exhibited correct values when compared with those from FTIR measurements.     

新型便携式汽车动态参数检测系统

介绍基于三星ARM9处理器S3C2410和ATMEL公司的AT89C5131单片机的汽车动态参数检测系统,该系统能够完成汽车在运动状态下的各种运动参数的检测。充分利用了S3C2410处理器提供的丰富的功能接口和强大的处理数据的能力以及AT89C5131单片机提供的USB功能接口。使运动参数传感器模块经模数转换器AD7656与单片机AT89C5131相连,然后通过USB接口连接到S3C2410处理器平台,共同构成即插即用型的便携式检测系统,从而给出了一个完整的汽车动态参数检测系统的实现方案。     

装甲车辆车载变压吸附制氧装置性能的试验分析

为解决高原部队缺氧问题,更好地满足部队战斗、训练的需要,对两台装甲车辆车载变压吸附制氧装置的样机进行低压舱模拟试验。测试制氧装置性能,分析产氧浓度、输出流量、入口压力和海拔高度之间的关系以及耗电量对样机性能的影响。测试结果表明,产氧浓度随海拔高度的升高而降低,随着输出流量的增大而减小,随入口压力的增加而增加。样机ZJS-2的功耗比ZJS-1平均高出300W。样机的产氧性能基本满足系统工程生理学防护要求和国军标GJB114—1986《急性缺氧防护生理要求》。     

装甲车辆车载变压吸附制氧装置性能的试验分析

为解决高原部队缺氧问题，更好地满足部队战斗、训练的需要，对两台装甲车辆车载变压吸附制氧装置的样机进行低压舱模拟试验。测试制氧装置性能，分析产氧浓度、输出流量、入口压力和海拔高度之间的关系以及耗电量对样机性能的影响。测试结果表明，产氧浓度随海拔高度的升高而降低，随着输出流量的增大而减小，随入口压力的增加而增加。样机ZJS-2的功耗比ZJS-1平均高出300W。样机的产氧性能基本满足系统工程生理学防护要求和国军标GJB 114-1986《急性缺氧防护生理要求》。