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[Documents] HowToCalibrateTouchScreens DL : 0: 有关如何进行touch screen校准的，对做嵌入式的朋友很有用的-About how to carry out calibration of touch screen, embedded on a friend to do useful
Date : 2025-12-19 Size : 79kb User : jack
[Documents] DESIGNOFHIGH-PRECISIONON-SPO DL : 0: 贲文介绍了一种高精度数字式就地指示温度计。使用Pt1000热电阻做测温传感器，采用典型的三线制接线方法来实现热电阻采样检测电路及导线的补偿。设计了微功耗高分辨率、高精度采样A/D通道，使得在-100℃～300℃范围内，测量精度达到了0.02 。设计了微功耗的控制核心MCU电路,微功耗采样和控制电路、微功耗配套电源和微功耗显示模块及键盘，在使用一节2AH/3.6V的AA型锂电池的情况下能够连续工作三年。提供了数字校准技术，方便用户在更换传感器后自行进行系统校准。-This design introduced a high-precision on-spot digital thermometer. It use PT1000 thermal resistance as the temperature sensor, and it use the classical three lines system. In the range of-100℃～300℃ the measure precision can be 0.02 .And it designed a low power consumption of sampling control power and the display circuits. With a 2AH/3.6V AA Li-battery it can be used for three years. And this design can be digital calibration to facility the user to calibrate himself.
Date : 2025-12-19 Size : 118kb User : 叶剧
[Documents] 微惯性测量单元的误差整机标定和补偿 DL : 0: 提出了微惯性测量单元( MIMU) 在高动态、高过载复杂应用条件下的误差整机标定和补偿方法。首先, 建立了高动态, 高过载复杂应用条件下MIMU 的误差模型, 该模型包括了结构误差, 传感器安装误差和MEMS 惯性传感器在复杂条件对精度影响较大的误差项, 指零位温度漂移、互耦误差、刻度因子非线性和微陀螺加速度效应误差; 根据模型提出了整机标定补偿方法, 该方法可以标定MIMU 的63 个误差系数, 并且不需要对单个传感器进行标定。然后, 介绍了利用最小二乘法对模型进行误差系数标定的方法和步骤, 并对自研的MIMU 进行了标定。(T he entire calibrat ion and compensat ion metho d o f a Miniature Inerial Measur ement U nit( MIMU) in high dy namic and o verload complicate environments w as pr opo sed. First ly, an error model applied to the complicate applicat ion environment s w as established, which consist s o f the structureer rors, installatio n misalignment errors and the erro rs of the MEMS sensors including zero outputdrif t, temperature drif t , crossax is error, no nlinear scale factor erro r and acceler at ion effect err or of gyr oscope. Based o n the model, the ent ire cal ibrat io n and compensat ion method w as pr opo sed to calibrate 63 er ror co ef ficient s w ithout calibrat ion of each MEMS iner tial sensor separ ately. T hen, thegeneralized least square algor ithm was used to calibrate and calculate the er ror coef ficient s. Finally, a MIMU was dev elo ped for a f light ex periment and w as calibrated w ith this pro posed method.)
Date : 2025-12-19 Size : 527kb User : guyan