16BITE_PWM

光纤倏逝场传感器对甲醇 （CH3OH）和乙醇（C2H5OH）基于变形光学溶剂 纤维芯的报道。现有的U型的敏感性 探讨提高延长暴露芯线圈形状 一个半圈的形成，核心行进 三弯曲的形状。利用可见光的波长区域（VIS） 甲醇/乙醇从0 到10 所示的浓度 的弯曲形状的传感器使测定灵敏度 更好的甲醇浓度比0点05 和 乙醇的浓度比0 在650nm。这有利于 低成本的光源和接收器使用规定 这个波长范围以及聚合物的光的利用 纤维导光和从传感器，从而导致较低的 成本的应用相比，所有的二氧化硅或聚合物包层石英光纤 在近红外（NIR）解决方案或紫外线（UV）波长 范围。 (An optical fibre evanescent field sensor for methanol (CH3OH) and ethanol (C2H5OH) solvents based on deformed optical fibre cores is reported. The sensitivity of an existing U-bend probe is increased by extending the exposed core to a coil shape of one and a half turns and by forming the core to a meander shape with three bends. Using the visible wavelength area (VIS) and methanol/ethanol concentrations from 0 to 10 it is shown that the sensitivity of the meander shape sensor enables the determination of methanol concentrations of better than 0:5 and of ethanol concentrations of better than 0:2 at 650nm. This facilitates the use of low cost optical sources and receivers provided for this wavelength range as well as the utilization of polymer optical fibres to guide the light to and from the sensor which results in low cost applications compared to all silica or polymer clad silica fibre solutions in the near-infrared (NIR) or ultra-violet (UV) wavelength range.)

用51单片机控制激光测距仪，测出距离并在数码管上显示(MCU control with 51 laser range finder, the distance measured and displayed on digital)

Datasheet of LCD chip

说明：  使用c语言开发51版的ADC功能与LCD功能。(51 written using c language version of the clock, can realize the normal timing)

传统的数据采集仪器（如示波器、频谱仪等）尽管采集速率大，但往往功能单一，且造价昂贵，不适合用于多通道、低速率的场合。使用LabVIEW编写的虚拟仪器，功能强大且易于开发，能方便地实现数据实时显示和保存。(Traditional data collection instruments (such as an oscilloscope, spectrum analyzer, etc.) even though a large collection rate, but often single function, and expensive, not suitable for multi-channel, low-rate occasions. Written in LabVIEW virtual instrument to use, powerful and easy to develop, easy to implement real-time data display and preservation.)

说明：  下面的程序利用友元函数求两点间的距离。请你将有关的程序补充完整，并总结为什么这里要用友元函数来求两点间的距离。(using friend to get the result.)

无线传感器网络时间同步（影印版）时间同步算法matlab仿真程序(time synchronization algorithm matlab simulation program in book：Wireless sensor network time synchronization (photocopy) )

这是Keil C51中的两个例子，对于刚刚接触Keil C51的人来说这两个例子非常有用 (This is the Keil C51 two examples, For contact Keil C51 just who these two examples very useful)

LCD显示18b20采集的温度，并且可以手动调整报警温度(LCD display 18b20 acquisition of temperature and can be adjusted manually alarm temperature)

DFRobot_bm160驱动，arduino驱动，arduino驱动(DFRobot_bm160 KEYWORD2 getSensorData KEYWORD2 softReset KEYWORD2 setInt KEYWORD2 setStepCounter KEYWORD2 readStepCounter KEYWORD2 setStepPowerMode KEYWORD2 onlyAccel KEYWORD2 onlyGyro KEYWORD2 bothAccelGyro KEYWORD2 stepNormalPowerMode)