Energetic particle radiations measured by particle detector on board CBERS-1 satellite

Using the data measured by energetic particle detector on board CBERS-01 and -02 for the past five years, statistics was made to show the general features of MeV electrons and protons along a solar synchronous orbit at an altitude of 780 km. This height is in the bottom region of the Earth's radiation belts. Detectors are inside the satellite cabinet and such continuous monitoring of particle radiation environment inside a satellite has seldom conducted so far. After a proper and careful treatment, it is indicated that the data inside satellite are well correlated with the radiation environment outside. Be-sides the agreement of the general distribution characteristics of energetic electrons and protons with similar observations from other satellites, attention is particularly paid to the disturbed conditions. Variations of particle fluxes are closely related with solar proton events, in general, electron fluxes of outer belt are well correlated with Dst index after three days' delay while the electron injection occurred almost at the same day during great magnetic storms. It is confirmed that both energetic electrons and protons appear in the Polar Cap region only after the solar proton events.     

基于新型MEMS技术的实时飞行仿真系统微控制器设计与实现

设计开发了一种基于新型MEMS技术的实时飞行仿真系统微控制器．首先设计了用以姿态控制、数据采集、控制律解算及接口通讯的微控制器系统的软件和硬件，在软件设计中采用了模块化思想，大大降低了微控制器软件设计的复杂度，同时给出了该软件的流程图．动静态仿真实验表明，所开发的基于MEMS技术的微控制器可完全满足实时飞行仿真系统对实时性和仿真精度的要求，从而验证了该设计方案的可行性和有效性．     

MCS—51微控制器在82527CAN控制器的接口方法

描述了ＭＣＳ－５１与８２５２７ＣＡＮ控制器的两种接口方法，简略介绍８２５２７的接口方式和时钟结构。     

锅炉水位智能控制器

采用ＡＴ８９Ｃ５１微控制器自动检测锅炉的水位状态，自动控制水泵的运行和停止，保证锅炉在正常的水位状态下工作，并且具有上，下限水位报警及锅炉超低水位紧急停炉等功能。     

热电偶热电势精密测定系统的设计

介绍采用精密运算放大器、模数转换（A/D）、微控制器进行处理,对热电偶电动势进行精密测量的方法。该系统电路简单,测量方便、适应性强、测量电压的范围宽,工作稳定。经测定电动势测量范围在00.00-99.99mv,误差≤±0.2%,转换速度6.25次/秒,符合设计要求。     

基于ARM7微控制器的双速轴角/数字处理器的设计

本文从应用角度出发,介绍了双速轴角/数字转换器的工作原理,分析了精粗机数据组合产生误差的原因,研究了纠错方法,选用高速32位ARM7微控制器作为主控芯片,设计了新式的双速轴角/数字转换器.通过试验证明,新式转换器的纠错方法正确,数据转换精度满足传统转换器的要求,并且配置方便,接口灵活,可扩展性好.     

一种新型防丢器的设计

本文介绍了一种新型防丢器设计和实现方法。该防丢器克服了市场上现有防丢器的缺陷,采用AT89S52CPU为控制器,nRF24L01射频模块作为收发系统,可以实现物品防丢功能,并可通过调整发射功率来实现接收距离的改变,特别适合用于儿童防丢。     

高分子电容式湿敏元件自动测量电路研究

由电容测量电路和８９Ｃ５１单片机控制系统结合组成１１８路高分子电容式湿敏元件自动测量仪，通过对电路采取多路电容公共连接点接大地、温度补偿和提高振荡频率等措施后，测量绝对精度可达±０．０４ｐＦ．