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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: 热释红外探测器的电路图和PCB图，已经经过测试，大家可以下来-Pyroelectric infrared detector circuit diagram and PCB map, has been tested, we can down
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Size: 49152 |
Author: 任杰 |
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Description: 用C51编写的一个等精度频率计，内涵PROTEUS，PCB及相应的代码。非常值得学习之用。-C51 prepared with a precision frequency meter, etc., the connotation of PROTEUS, PCB and the corresponding code. Well worth learning.
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Size: 76800 |
Author: 陈利庆 |
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Description: 是本人在前边一次上传的数字电压表的原理图包括PCB-Is my first time in front of the digital voltage meter From the schematic diagram including the PCB
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Size: 90112 |
Author: 陈飞 |
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Description: 一个基于89S52的电容表(原理图+PCB+源代码+实物照片）-89S52-based capacitive Table (Schematic+ PCB+ Source code+ Kind photos)
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Size: 533504 |
Author: 知秋 |
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Description: AD0809制作的简单数字电压表，文件中包含仿真图，pcb图以及c程序，便于学习。-AD0809 produced by a simple digital voltage meter, the document contains the simulation map, pcb diagram and c procedures, to facilitate learning.
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Size: 301056 |
Author: victorlee |
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Description: 这是att7030的电表电路图 包括sch pcb 全部资料.-This is att7030 meter sch pcb circuit, including all the information.
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Size: 306176 |
Author: 张攀 |
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Description: 一部完全成功的电能表,包括电路,pcb,对电能表设计很有帮助.-A complete success of the energy meter, including the circuit, pcb, helpful to the energy meter design.
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Size: 1460224 |
Author: 烟雨楼 |
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Description: 这是我的另一篇电能表的完整设计，包括完整的原理图和PCB-This is my other one watt-hour meter complete design, including a complete schematic and PCB
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Size: 1427456 |
Author: 烟雨楼 |
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Description: 简易数字电压表可以测量0~5CV的8路输入电压值，并在4位LED数码管上轮流显示或单路选择显示。测量最小分辨率为0.019V，测量误差约为0.02V。
-Simple digital voltage meter can measure 0 ~ 5CV 8-way input voltage value, and the four LED digital tube display or one-way rotating choose to display. Measuring a minimum resolution of 0.019V, measurement error is about 0.02V.
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Size: 697344 |
Author: 任星 |
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Description: 强！自制电容表的源程序和PCB图,很多贴片电容都没有标明电容值，而我又舍不得扔了它们；自己做电路玩时，经常看到一些废电路板上有很多贴片电容，可以拆下来用，但是却看不到容量，很郁闷。所以我决定做一个电容表来测试它们的容量。 我用单片机8952和电压比较器339做了一个简单的电容容量测量表，参数大致如下： 电容测量范围为1pF-9999.99uF，最小分辨力为1pF。分为5个量程，可以自动切换量程，也可手动切换。 另外，有简单的频率计功能，能测量0-60MHz的数字信号频率（TTL电平）；还可以产生几个单点频率的方波信号（比如1KHz）。-strong! Table homemade capacitance of the source and PCB plans, many chip capacitors are not marked with capacitance values, and I could not bear to throw them; Circuit done playing, I always see some circuit board waste a lot of chip capacitors, used to be removed, but I fail to see the capacity, very depressed. So I decided to make a capacitance meter to test their capacity. I used SCM 8952 and voltage comparator 339 to do a simple capacitance measurement table, along the following parameters : capacitance measurement range to max-9999.99uF, minimum resolution of the disturbance. Divided into five range, it will automatically switch range can also manually switch. In addition, a simple function of frequency meter, capable of measuring 0-60MHz digital signal frequency (TTL level); Some ca
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Size: 523264 |
Author: 胡永伟 |
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Description: Simple Speed meter PCB & design
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Size: 70656 |
Author: hassan7102 |
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Description: 这是我为国外设计的电能表（圆表）完整的电路图和PCB，已经交付国外，运行性能能良好，欢迎交流。-This is my design for the foreign power meter (round table) a complete schematic and PCB, have been delivered abroad, performance can be good, please share.
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Size: 204800 |
Author: 烟雨楼 |
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Description: volt meter PCB 16f676
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Size: 25600 |
Author: Raju D |
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Description: 单相多费率表PCB图，很详细可以直接设计产品。- Single Phase Multi-tariff Electronic Meter for PCB
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Size: 189440 |
Author: Arsen |
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Description: 数字频率计设计(PCB图+电路图+源程序)-课程设计，频率计的硬件电路是用Protel绘图软件绘制而成，软件部分的单片机控制程序，是用汇编语言编写而成。由于本设计采用了模块化的设计方法，具有性能优良，精度高，可靠性好等特点，提高了测量频率的范围。-Digital Frequency Meter (PCB schematic diagram++ source code)- course design, frequency of the hardware circuit is drawn by using Protel mapping software, the software part of the microcontroller control program is written in assembly language. Since the design uses a modular design approach, with excellent performance, high precision, reliability and other characteristics, the measurement frequency range.
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Size: 23552 |
Author: 冯紫藤 |
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Description: zl电感电容电解电容测量仪电路原理图pcb-zl electrolytic capacitor meter LC circuit diagram pcb
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Size: 539648 |
Author: 邓 |
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Description: LC meter (ATmega32)
Sources codes & Schematics ,PCB
Features
-Inexpensive
-High acuarity
-Auto scale
-Auto calibration
-Can be use as a frequency meter with only small modification
-Measure capacitance and inductance
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Size: 309248 |
Author: manoch |
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Description: 基于MODBUS协议的智能电表数据采集传输设计，原理图库和PCB库(Design of data acquisition and transmission of intelligent meter based on Modbus protocol, schematic library and PCB Library)
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Size: 386048 |
Author: O1同学 |
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Description: 2x16 led Vu meter PCB Design Files.Use eagle to open or edit
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Size: 82577 |
Author: jobitjoseph1 |
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