汽车尾灯设计精品推荐.docVIP

汽车尾灯显示控制电路设计 目 录 摘 要 I Abract II 1.设计任务 - 1 - 2.设计要求 - 1 - 3.设计方案 - 2 - 3.1参考过的设计方案 - 2 - 3.1.1参考方案一 - 2 - 3.1.2参考方案二 - 2 - 3.1.3参考方案三 - 3 - 3.1.4参考方案四 - 3 - 3.1.5参考方案五 - 4 - 3.2方案电路的详细原理 - 4 - 4.设计内容 - 6 - 4.1分部设计 - 6 - 4.1.1时钟信号源（CLK）设计 - 6 - 4.1.2总电路设计 - 7 - 4.2部分电路图及整体电路图 - 12 - 5.设计总结 - 15 - 6.元器件清单 - 15 - 7.参考资料及文献 - 16 -  摘 要 本设计为汽车尾灯控制电路设计，设计初一共参考了五种设计方案，最终选择其中一种本人认为最佳的方案，采用555时钟电路来构成脉冲产生电路，用74138芯片构成译码电路，用74160芯片来组成计数电路，从而驱动LED发光。该设计方案是通过查阅各种资料和自我思考做出来的，在设计的过程中我想用Protel DXP 2004仿真但是由于时间关系，掌握不了。由于会EWB，于是在仿真的时候我就想到用EWB仿真来替代。通过网上查阅资料了解了555定时器构成，于是我设计一个方波源。但是设计好方波源后我们必须仿真看是否正确，于是就用到了EWB进行仿真。这次设计的功能都是逐一增加的。特别是停车模拟开关的设计，没用老师提示的555定时器，而是通过自己思考，用了一个单刀双掷开关和电源实现。 Abstract Originally designed in the taillight control circuit of car to design, has designed and consulted five kinds of design plans altogether for the first time, choose one kind of them to think the best scheme in person finally, adopt 555 clocks of circuit to form the pulse to produce the circuit, form decipher circuit with 74138 chip, come, make up, count circuit with 74160 chip, urge LED give out light. This design plan was worked out through consulting various materials and thinking oneself, I want to use Protel DXP 2004 emulation but by virtue of time, can not master during the process of designing. Because of knowing EWB, then I think of substituting with EWB emulation in emulation. Have understood 555 timers form, then I design a square wave source through consulting the materials on the net. But after designing the square wave source well whether our necessary emulation is seen to be correct, then carry on emulation by reaching EWB. The functions designed this time all increase one by one. Park design of analog switch, with 555 timers that Mr. brief on, think through oneself, throw with one short-hilted broadsword pair switch and power realize. 1.设计任务 设计构成一个控制汽车六个尾灯的电路，用六个指示灯模拟六个尾灯（汽车尾部左右每侧三个灯），并用两个拨动式（乒乓）开关作为转弯信号源；一个乒乓开关用于指示右转弯，一个乒乓开关用于指示左转弯，如果两个乒乓开关都被接通，说明驾驶员是一个外行，紧急闪烁器起作用。 图1-1 汽车尾灯控