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，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，采集時鐘器件PCF8583的時間信息,計(jì)算當(dāng)前太陽位置來實(shí)現(xiàn)視日運(yùn)動軌跡跟蹤。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.
出了一種利用ATmegA8單片機(jī)對ISD2500系列語音芯片進(jìn)行控制的智能語音系統(tǒng)，此系統(tǒng)使用靈活，易于功能升級，具有良好的應(yīng)用前景。提供了硬件連接電路和關(guān)鍵源程序。
Abstract:
An intelligent voice system using ISD2500 series voice chips based on ATmegA8 MCU is described.This system is flexible and easy to upgrade for users,and it has pretty good using foreground. The circuit diagram and the key program are also provided.
