不良导体导热系数快速测定仪

依据非稳态传热理论研制了导热系数快速测定仪，用单片机完成了解偏微分方程等复杂数据的处理，能自动完成测试条件的自动控制，材料所处温度的测量，直接显示待测材料的导热系数，整个测量过程在10min内完成．     

广播式自动相关监视设备系统设计

随着多旋翼无人机日益广泛的应用,其监视能力的薄弱也日渐显露,增强其自主监视能力是实现无机自动化的重要手段,为此,设计了一套基于MSP430F4152的小型广播式自动相关监视设备,可使多旋翼无人机具有自主监视能力。首先,基于现有的广播式自动相关监视技术,对嵌入式系统进行优化设计,然后,设计了以MSP430F4152微控制器为主控芯片的硬件部分,通过ATGM331C模块获取位置信息与时间同步信号,并利用nRF24L01 模块进行无线数据传输,最终在J204A显示屏上显示本机信息与远程数据。软件部分针对电池驱动的硬件做了优化设计,参考UAT数据链设计了本系统的工作时序,利用Asterix Category 021协议设计了本系统的报文格式,最后对文中方法进行实验测试,结果表明了文中系统能实现主监视,是一种可行的方法。     

基于AVR单片机的超声波测距系统构建

为了提高超声波测距精度,构建了基于AVR单片机的测距及数据处理系统。分析了超声波测距的原理,以AVR单片机为处理器设计了超声波产生和发射电路、超声波接收和信号处理电路以及温度测量和补偿电路等。针对温度对超声波速度的影响,根据超声波速度与温度的关系,设计了超声波速度补偿算法。为了提高回波时间测量准确性,减小随机噪声及空气中其他杂散播干扰的影响,采用均值数字滤波方法,对计数时间进行处理。实测结果表明,在3cm~400cm范围内,超声波测距系统测量数据准确,最大误差为0.66cm。     

一种全自动光度滴定仪

报道了改装７２１型分光光度计为光度滴定仪并联用８０３１单片微机构成一台全自动光度滴定仪，在单片机的控制下，实现取样，加试液，搅拌，开关光门，调零，调参比，滴定，测吸光度，数据处理，显示结果并打印，排除废液，冲洗滴定池等操作过程的全自动化，约１１０ｓ可完成一次测定，误差〈０．２％，ＲＳＤ〈１．５％，测定快速，准确，重复性好，可胜任在线监测工作，也可作常规滴定分析。     

A portable, inexpensive and microcontrolled spectrophotometer based on white LED as light source and CD media as diffraction grid

A portable, microcontrolled and low-cost spectrophotometer (MLCS) is proposed. The instrument combines the use of a compact disc (CD) media as diffraction grid and white light-emitting diode (LED) as radiation source. Moreover, it employs a phototransistor with spectral sensitivity in visible region as phototransductor, as well as a programmable interrupt controller (PIC) microcontroller as control unit. The proposed instrument was successfully applied to determination of food colorants (tartrazine, sunset yellow, brilliant blue and allura red) in five synthetics samples and Fe²⁺ in six samples of restorative oral solutions. For comparison purpose, two commercial spectrophotometers (HP and Micronal) were employed. The application of the t-paired test at the 95% confidence level revealed that there are not significant differences between the concentration values estimated by the three instruments. Furthermore, a good precision in the analyte concentrations was obtained by using MLCS. The overall relative standard deviation (R.S.D.) of each analyte was smaller than 1.0%. Therefore, the proposed instrument offers an economically viable alternative for spectrophotometric chemical analysis in small routine, research and/or teaching laboratories, because its components are inexpensive and of easy acquisition.     

利用压力传感器测量溶质质量分数

介绍了用压力传感器快速、准确测量溶质质量分数的一种新方法。     

智能弗兰克-赫兹实验测量仪的研制

采用AT90S 8535单片机研制了一种智能弗兰克－赫兹实验测量仪，能测量10^-9-10^-12A微电流，提供0－50V线性程控稳压电源，模糊控温，图形液晶显示中英和曲线，曲线数据打印，具有测量快、精度高、体积小、成本低、使用方便等优点。本介绍了该测量仪的硬件组成、典型电路工作原理、软件设计，分析了实验结果。     

基于PA92的F-P扫描干涉仪设计

使用STM32F103ZET6单片机控制,采用PA92功率放大器驱动压电陶瓷,设计了532nm平平腔结构的F-P扫描干涉仪。腔镜反射率为99%,精细度310,腔长0.1~150mm连续可调,对应自由光谱区1~1500GHz和分辨率3.2~4800MHz连续可调。压电陶瓷驱动电压和频率通过编码器调节,可以在0~200V和1~100Hz连续可调,并显示在数码管上。同时可以通过RS232串口与计算机通讯,在上位机使用LabVIEW软件界面方便地设置压电陶瓷驱动电压和频率。使用F-P扫描干涉仪,对激光二极管泵浦Nd∶YVO4/KTP绿光激光器纵模进行了测量,验证了整个系统的工作性能稳定可靠。     

Autonomous System Design for Mössbauer Spectra Acquisition

An autonomous system for Mössbauer spectroscopy based in a microcontroller has been designed. A timer of the microcontroller was used to generate the control signal for the Mössbauer linear motor, and a counter for the spectra acquisition. Additionally, the system has its own memory for data storage and a serial port to transmit the data to a computer for its later processing and display.     

基于单片机的光纤半导体温度传感器的研究

提出了一种基于单片机技术的光纤半导体温度传感器.利用GaAs晶体对光的吸收率与温度所存在的确定关系进行测温,并采用单片机进行信号检测与信号处理.实验表明,所研制的传感器具有较高精度,精度为0.2℃(-50～150℃).现场试用情况表明,此光纤半导体温度传感器具有较高时间稳定性、高重复性、高可靠性、高性价比等特点,是一种应用前景广阔的传感器.