- 學位論文
LED照明驅動電路於精緻農業之應用設計
Design of a Driver Circuit for LED Lighting Applied in Quality Agriculture
摘要
本論文主要設計一個LED照明驅動電路於精緻農業之應用設計，以升壓式轉換器來進行設計與模擬。為了避免電路起動時，由於電感導致的大電流損毀晶片及元件，因此需要一緩啟動電路以達到觸發功率電晶體的導通週期逐漸變大的訊號，本論文使用藉由偵測電阻回授電路來控制功率電晶體的開關或截止，可縮短暫態時間以及抑制電路起始瞬間大電流。本文使用旺宏電子Macronix 0.5um CMOS DPDM BCD 5V/65V HV Process進行設計，電路包括誤差放大器、時脈與鋸齒波產生器、具遲滯效應之軌對軌電壓比較器、電壓電流轉換器、緩啟動電路。LED照明驅動電路系統，此系統採用照光補償(使用LED或高效能節能投射燈)，以收集作物生長環境參數與統計分析，以達到精緻農業生產中所需技術與設備建置的有效管理。補光照明系統規劃採用LED照明燈陣列或高效能節能射燈，在天候不佳情況下可讓作物有更充足光源幫助生長，降低因天候因素影響生長問題。
並列摘要
In this paper, the design and simulation of an LED lighting driver circuit with boost converter applied in quality agriculture is presented. In order to avoid circuit start-up caused by high-current inductors that can lead to chip and component damage, a soft-start circuit consisting of a power transistor triggered during each clock period has been implemented. This causes the signal to gradually increase. In this paper, a resistor feedback circuit has been used to control the switching of the power transistor. The transient time can be shortened with the suppression circuit starting momentarily with high current. In this paper, the Macronix 0.5um CMOS DPDM BCD 5V / 65V HV Process has been used. The circuit includes an error amplifier, clock and sawtooth generator with comparator, V-I converter, and soft-start circuit. The LED lighting driver circuit system incorporates illumination compensation (use LED or high-efficiency energy-saving projection lamp), and collects the crop growth environment parameters for statistical analysis. This aims to achieve effective technological management and to build a quality equipment needed for agricultural production. supplement lighting systems using LED arrays provide an efficient energy-saving lighting allowing ample light to grow more crops despite any bad weather condition.