基于PWM的標(biāo)準(zhǔn)光源控制系統(tǒng)設(shè)計(jì)

電氣工程論文編號(hào):DQ124   論文字?jǐn)?shù):12429,頁數(shù):39

目  錄
摘要 II
Abstract III
目  錄 IV
1  緒 論 1
2  總體設(shè)計(jì)方案 3
 2.1  系統(tǒng)結(jié)構(gòu)設(shè)計(jì) 3
 2.2  系統(tǒng)控制面板設(shè)計(jì) 4
3  系統(tǒng)硬件電路設(shè)計(jì) 5
 3.1  基于PWM的電路設(shè)計(jì) 5
 3.2  液晶屏電路設(shè)計(jì) 7
 3.3  按鍵電路設(shè)計(jì) 9
 3.4  供電電源電路設(shè)計(jì) 10
 3.5  激光器電路設(shè)計(jì) 10
 3.6  蜂鳴器電路設(shè)計(jì) 11
 3.7  數(shù)據(jù)存儲(chǔ)器電路設(shè)計(jì) 11
 3.8  復(fù)位電路設(shè)計(jì) 12
 3.9  DEBUG指示燈電路設(shè)計(jì) 13
 3.10  主控電路設(shè)計(jì) 13
4  軟件設(shè)計(jì) 16
 4.1  使用函數(shù)說明 16
 4.2  程序設(shè)計(jì) 16
5  總結(jié) 22
致謝 23
參考文獻(xiàn) 24
附 錄1 26
附 錄2 27

摘  要
 
 汽車前照燈檢測(cè)儀校準(zhǔn)器是光軸可以轉(zhuǎn)動(dòng)的標(biāo)準(zhǔn)光源,它由光源、直流穩(wěn)壓電源及電壓表、光軸角轉(zhuǎn)動(dòng)及讀數(shù)機(jī)構(gòu)、水平調(diào)整機(jī)構(gòu)和找正機(jī)構(gòu)等部分構(gòu)成。按JJG 967-2001機(jī)動(dòng)車前照燈檢測(cè)儀校準(zhǔn)器檢定規(guī)程要求,應(yīng)對(duì)其發(fā)光強(qiáng)度、光軸角及水平調(diào)節(jié)機(jī)構(gòu)進(jìn)行計(jì)量性能檢定以保證其正常使用。本次設(shè)計(jì)考慮到大功率管在使用上的局限，使用了在功能上可以替換大功率管調(diào)節(jié)的另一種調(diào)節(jié)方式，即采用PWM調(diào)節(jié)控制輸出電壓，這樣可以保證標(biāo)準(zhǔn)光源的輸出光照強(qiáng)度不會(huì)出現(xiàn)因線性電路存在漂移而不精確的問題，更為準(zhǔn)確的調(diào)節(jié)輸出電壓來達(dá)到目的。
 
關(guān)鍵詞 前照燈檢測(cè)儀；校準(zhǔn)器；PWM

Abstract

Calibrators of Headlamp Tester for Motor Vehicle is the standard source which the optical axis can rotate. It consists of lighting, DC regulated power supply and voltage meter, optical axis angle of rotation and reading institutions, horizontal adjustemt institutions and the parts of find are institutions. By JJG 967-2001 Motor Vehicle headlamp tester calibrator verification procedures required, we should deal with its luminous intensity, the optical axis angle and the horizontal adjusting mechanism for measuring the performance test to ensure its normal use. The design considerations to the limited of the power tube use. We use in the functional regulation can replace the power control means another adjustment, that adjustment by PWM control of output voltage, so we can ensure that the standard output of light intensity light source is not occur due to the existence of linear electric drift problem without accurate, more accurate output voltage regulation to achieve their goals.
 
Keywords  Headlamp Tester；Calibrators；PWM