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基于ATmega8的雙軸太陽跟蹤器設(shè)計(jì)

為提高太陽能的利用率，以ATmega8單片機(jī)為控制核心，設(shè)計(jì)了一套光電跟蹤與視日運(yùn)動(dòng)軌跡跟蹤互補(bǔ)控制的雙軸太陽跟蹤器。該跟蹤器在晴天時(shí)，利用光敏電阻采集光強(qiáng)判斷太陽位置,控制步進(jìn)電機(jī)實(shí)現(xiàn)光電跟蹤；在陰天時(shí)，采集時(shí)鐘器件PCF8583的時(shí)間信息,計(jì)算當(dāng)前太陽位置來實(shí)現(xiàn)視日運(yùn)動(dòng)軌跡跟蹤。實(shí)驗(yàn)表明：該太陽跟蹤器能在不同天氣狀況下對(duì)太陽進(jìn)行較準(zhǔn)確地跟蹤，能量接收效率提高了30%，達(dá)到充分利用太陽能的目的。 Abstract: To improve the utilization rate of solar energy，a kind of solar tracking controller which effectively combined the sun angle tracking and photo electric tracking based on ATmega8is designed.In the sunny days，the solar tracking con-troller determines the sun's position by using photosensitive resistances to collect Light intensity and control stepper motors to achieve photo electric tracking，n cloudy days，it collects clock chip PCF8583time information to calculate the current position of the sun and achieve the sun angle tracking.Experimental results show the solar tracking controller accurately tracks the sun in different weather conditions，improves received energy efficiency by30%and reaches the purpose of full use of solar energy.

標(biāo)簽： ATmega8 跟蹤器

上傳時(shí)間： 2013-10-15

上傳用戶：urgdil
基于CAN總線的綜自通訊規(guī)約設(shè)計(jì)

介紹一種基于CAN總線的牽引變電站自動(dòng)化系統(tǒng)通訊規(guī)約的設(shè)計(jì)，CAN通訊規(guī)約采用標(biāo)準(zhǔn)幀，報(bào)文采用主動(dòng)發(fā)送和發(fā)送查詢兩種處理形式。該設(shè)計(jì)在城市輕軌與地鐵牽引變電站中的應(yīng)用表明：可實(shí)現(xiàn)間隔層和通訊處理層的數(shù)據(jù)快速、可靠的交換，提高牽引變電站的安全性和穩(wěn)定性。 Abstract: This paper firstly presents a kind of design dealing with communicational protocol to the traction substation automation system based on CAN bus,and then comes up with the ideas that all frames of CAN communicational protocol should adopt the standard frame,and that messages be processed by two ways:sending initiatively and sending quiries.Subway and Light rail application shows that the use of the CAN bus is possible to exchange data quickly and reliably between the layers of the middle and the communicational processing,hence to improve the safety and stability of traction substations.

標(biāo)簽： CAN 總線通訊規(guī)約

上傳時(shí)間： 2013-11-07

上傳用戶：bs2005
A Single-Chip Pulsoximeter Des

This application report discusses the design of non-invasive optical plethysmographyalso called as pulsoximeter using the MSP430FG437 Microcontroller (MCU). Thepulsoximeter consists of a peripheral probe combined with the MCU displaying theoxygen saturation and pulse rate on a LCD glass. The same sensor is used for bothheart-rate detection and pulsoximetering in this application. The probe is placed on aperipheral point of the body such as a finger tip, ear lobe or the nose. The probeincludes two Light emitting diodes (LEDs), one in the visible red spectrum (660nm) andthe other in the infrared spectrum (940nm). The percentage of oxygen in the body isworked by measuring the intensity from each frequency of Light after it transmitsthrough the body and then calculating the ratio between these two intensities.

標(biāo)簽： Pulsoximeter Single-Chip Des

上傳時(shí)間： 2013-10-27

上傳用戶：黑漆漆
FREERTOS的官方移植文檔

FeaturesThe following standard features are provided.• Choice of RTOS scheduling policy1. Pre-emptive:Always runs the highest available task. Tasks of identical priorityshare CPU time (fully pre-emptive with round robin time slicing).2. Cooperative:Context switches only occur if a task blocks, or explicitly callstaskYIELD().• Co-routines (Light weight tasks that utilise very little RAM).• Message queues• Semaphores [via macros]• Trace visualisation ability (requires more RAM)• Majority of source code common to all supported development tools• Wide range of ports and examples

標(biāo)簽： FREERTOS 移植文檔

上傳時(shí)間： 2013-10-13

上傳用戶：13162218709
水位監(jiān)測(cè)報(bào)警系統(tǒng)原理

摘要：本水位監(jiān)測(cè)報(bào)警器使用5V低壓直流電源（也可以用3節(jié)5號(hào)電池代替）就可以對(duì)5~15厘米的水位進(jìn)行監(jiān)測(cè)，用LED顯示和數(shù)碼管顯示水位，并可以對(duì)不再此范圍內(nèi)的水位發(fā)出報(bào)警。主要采用CD4066、74LS86、74LS32、CD4511芯片，再加上數(shù)碼管、蜂鳴器、發(fā)光二極管、電阻這些器件組成一個(gè)簡(jiǎn)單而靈敏的監(jiān)測(cè)報(bào)警電路，操作簡(jiǎn)單，接通電源即可工作。因?yàn)榇蟛糠蛛娐凡捎脭?shù)字電路，所以本水位監(jiān)測(cè)報(bào)警器還具有耗能低、準(zhǔn)確性高的特點(diǎn)。關(guān)鍵字：譯碼電路報(bào)警電路監(jiān)測(cè)電路 Abstract: The water level alarm monitoring the use of 5 V low-voltage DC power (can also use three batteries replaced on the 5th) will be able to 5 to 15 centimeters of water level monitoring, with LED display and digital display of water level, and this can no longer Within the scope of a water level alarm. Mainly CD4066, 74LS86, 74LS32, CD4511 chips, coupled with digital control, buzzer, Light-emitting diode, the resistance of these devices composed of a simple and sensitive monitoring alarm circuits. Because the majority of circuits using digital circuitry, so the water level monitored alarm system also has low energy consumption, high accuracy of the characteristics. Keyword: Decoding circuit alarm circuit monitoring circuit

標(biāo)簽： 水位監(jiān)測(cè)報(bào)警系統(tǒng)原理

上傳時(shí)間： 2013-11-05

上傳用戶：王慶才
飛思卡爾S12處理器培訓(xùn)講義

飛思卡爾S12處理器培訓(xùn)講義 In this LAB, we will: Get familiar with CodeWarrior 4.7 IDE; How to work with project wizard; Light the LEDs

標(biāo)簽： S12 飛思卡爾處理器培訓(xùn)講義

上傳時(shí)間： 2013-11-13

上傳用戶：LIKE
光電開關(guān)電路模塊設(shè)計(jì)

高性能光電傳感器具有以下特性：電源可選; 模式可選： Dark ON / Light ON; 輸出形式： NPN / PNP / 繼電器輸出; 響應(yīng)速度快; 預(yù)報(bào)警功能; 保護(hù)距離長; 抗干擾性強(qiáng);輸入回路保護(hù); 輸出回路短路保護(hù);相鄰多個(gè)傳感器可并排使用相互之間不干擾

標(biāo)簽： 光電開關(guān)電路模塊設(shè)計(jì)

上傳時(shí)間： 2015-01-02

上傳用戶：cknck
智能照明控制器測(cè)量環(huán)境光線

Abstract: This application note explains how to design an intelligent Lighting controller that senses and measures the ambient Lightlevel with an ambient Light sensor (ALS). Equipped with a real-time clock (RTC), the controller also knows when to turn Lighting on oroff at specified times. The system presented in this document can be used to control all luminaires that are mains-supply operated.Controller software is also provided in hex format.

標(biāo)簽： 智能照明控制器測(cè)量環(huán)境光線

上傳時(shí)間： 2013-11-18

上傳用戶：AbuGe
這是一個(gè)比較酷（炫）的特殊效果

這是一個(gè)比較酷（炫）的特殊效果，最早出現(xiàn)在 Ray Of Light 網(wǎng)站，現(xiàn)在您也可以試一下輝光的效果了！快快動(dòng)手吧！

標(biāo)簽： 比較

上傳時(shí)間： 2013-12-06

上傳用戶：Breathe0125
CWebGrab is a simple class that allows you to quickly and easily download files from the net. The cl

CWebGrab is a simple class that allows you to quickly and easily download files from the net. The class is merely a Light wrapper for the MFC internet classes, and as such supports any protocol that the MFC classes support.

標(biāo)簽： CWebGrab download quickly allows

上傳時(shí)間： 2015-03-19

上傳用戶：R50974