SCR夜间光控照明灯电路设计说明书.doc

word格式文档 word格式文档 专业整理 专业整理 SCR夜间光控照明灯电路设计 摘 要 随着光控电路的发展, 光能在智能化设计电路中得到了广泛应用, 本文设计了一种既实用又便于制作的光控照明电路, 首先为确保电路能正常工作设计了一个稳压电路, 然后利用光敏元件随光照强度的变化而阻抗发生变化的特点去控制电信号的强弱, 再由传感器将变化的电信号传递给触发器, 只要电信号强度达到一定程度就可触发触发器使其导通工作, 这样就能实现当外界光照强度降低到一定程度时, 使照明电路导通工作,从而就可实现光对照明电路的亮与暗的控制。 本文首先采用了晶闸管﹑光敏器件﹑高亮度LED灯﹑电容降压技术等。设计了SCR夜间光控照明灯电路设计，该系统组成的特点如下： 本文达到的指标：达到了实用性﹑经济性﹑创新性。大大增大了经济效益。它的特点：电容降压，使得体积重量大大减小，成本显著地降低，从而效率明显的上升。所需要达到的指标：U=220V﹑驱动LED=30W，实现了高效的切换关灯与熄灯的自动控制。 实用性：SCR夜间光控照明灯可以广泛的应用到广场﹑街道等等的公共场所，因此具有很高的实用性与经济性。 关键词:稳压电路，光敏元件，光照强度，电信号，传感器，触发器 ABSTRACT With the development of the light-controlled circuit , the energy of light has widely been applied in the intellectuaectualization designed circuit A kind of light-controlled illumination circuit which is both practical and conveniently made is designed in the article.At first,a voltage-estabilizer is desigined to guarantee the electrical made is designed to guarantee the electrical circuit to work changing of the intenth of the the strength o r weakenth of the electrical signal , then the sensor transmits the changed electrical signal to the trigger sw itch , the intensity o f electrical signal which reaches to a certain ex tent can cause the triggerswitch to breakover .So when the intensity of illumination outside reduces to a certain ex tent , this can realize the aim that the illumination circuit breakovers , and then the bright o r black conditions of the illumination circuit a re controlled by the light . At first, this paper adopts thyristor photosensor high brightness LED lamp capacitor step-down technology design of the SCR electric lighting at night circuit design, the system composition is as follows: The characteristics of this paper, the performance indexes of the practical economy innovation of this article features: capacitance step-down, greatly reduce the volume weight, significantly reduce cost .Rising efficiency obviou