太赫兹科学与电子信息学报
太赫玆科學與電子信息學報
태혁자과학여전자신식학보
Information and Electronic Engineering
2013年
6期
986-989
,共4页
热释电红外传感器%智能照明%单片机%恒流驱动
熱釋電紅外傳感器%智能照明%單片機%恆流驅動
열석전홍외전감기%지능조명%단편궤%항류구동
pyroelectric infrared sensor%intelligent lighting%single chip microcomputer%constant current driver
为了提高发光二极管(LED)照明系统的智能化程度，介绍了一个以 lpc2103为控制核心的设计方案。系统由主控制器和单元控制器构成，热释电红外传感器检测的人体移动信号，与光敏电阻检测的环境光强度信号送入 PIC16F628a 单片机，实现移动人体和环境光照强度检测。采用PT4115芯片，实现 LED光源恒流驱动，运用脉冲宽度调制调光方式，使光照强度保持稳定，从而实现对LED照明的智能化控制。实验结果充分证明了系统方案的可行性、高效性和稳定性。
為瞭提高髮光二極管(LED)照明繫統的智能化程度，介紹瞭一箇以 lpc2103為控製覈心的設計方案。繫統由主控製器和單元控製器構成，熱釋電紅外傳感器檢測的人體移動信號，與光敏電阻檢測的環境光彊度信號送入 PIC16F628a 單片機，實現移動人體和環境光照彊度檢測。採用PT4115芯片，實現 LED光源恆流驅動，運用脈遲寬度調製調光方式，使光照彊度保持穩定，從而實現對LED照明的智能化控製。實驗結果充分證明瞭繫統方案的可行性、高效性和穩定性。
위료제고발광이겁관(LED)조명계통적지능화정도，개소료일개이 lpc2103위공제핵심적설계방안。계통유주공제기화단원공제기구성，열석전홍외전감기검측적인체이동신호，여광민전조검측적배경광강도신호송입 PIC16F628a 단편궤，실현이동인체화배경광조강도검측。채용PT4115심편，실현 LED광원항류구동，운용맥충관도조제조광방식，사광조강도보지은정，종이실현대LED조명적지능화공제。실험결과충분증명료계통방안적가행성、고효성화은정성。
In order to improve the intelligence of Light Emitting Diode(LED) lighting system,the design of controller based on lpc2103 is introduced. The system is composed of the main controller and the unit controller. The pyroelectric infrared sensor detects the signal of human body movements and the photosensitive resistance detects the light signal intensity of environment , both signals are then transmitted to the single chip microcomputer immediately to realize the detection. By using adjustable light chip PT4115,high power LED constant-current driver can be realized. The Pulse Width Modulation (PWM) can keep the light intensity stable. The controller communicates with other devices by the communication module. It has been proved that the proposed circuit system is simple,feasible,sensitive and manageable with low cost.
