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Description: 随着精准农业的发展，农业种植和农业研究人员需要一种手持式NDVI测量仪，以便对农作物长势进行定量测量。本文讨论了一种手持式NDVI测量仪的完整设计过程，详细论述了设计原理，并给出了详尽的单片机程序、设计电路原理图及PCB图。该NDVI测量仪采用太阳光作为光源，光电探测器采用滤光片和光敏二极管实现，用AT89C51单片机控制。其具有结构简单、成本低、轻便、低功耗的特点。-With the development of precision agriculture and farming, and agricultural researchers need a handheld NDVI measuring instrument, in order to crop growth for quantitative measurement. This paper discusses a handheld meter NDVI the integrity of the design process, discussed in detail the design principles, and gives a detailed SCM procedures, circuit schematics and PCB plans. The NDVI measuring instrument used sunlight as a light source, photodetector using filters and photodiode realized, with AT89C51 control. Its structure is simple, low cost, lightweight, low-power characteristics.
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Size: 351232 |
Author: 秦丽 |
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Description: a complete project files for 89C51 programer,include souce code for PC driver and PCB files
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Size: 968704 |
Author: harry li |
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Description: 触摸式人行灯控制器PCB图
是用89C52芯片的-tactile signal controller of the People's Bank of PCB map is used 89C52 chip
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Size: 96256 |
Author: zhangyao |
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Description: 89C51最小系统调试。
单片机的最小化系统是指单片机能正常工作所必须的外围元件，主要可以分成时钟电路和复位电路，我们采用的是AT89C51芯片，它内部自带4K的FLASH程序存储器，一般情况下，这4K的存储空间足够我们使用，所以我们将AT89C51芯片的第31脚固定接高电平（PCB画板时已经接死），所以我们只用芯片内部的4K程序存储器。-The 89 C51 minimum system commissioning.
Chip minimize system is a single chip can work properly the periphery of the main components, must be can be divided into the clock circuit and reset circuit, we use is AT89C51 chip, it bring their own internal 4 K FLASH program memory, usually, the 4 K storage space enough, so we will use our feet of fixed AT89C51 chip 31 by high level (PCB board has already meet dead), so we only inside the chip program memory 4 K.
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Size: 52224 |
Author: 黎娇 |
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