发布时间 : 星期六 文章基于EDA的交通灯控制系统设计更新完毕开始阅读41117c79250c844769eae009581b6bd97e19bc4e
Q3<=TIME2H;Q4<=TIME2L; END IF;
ELSE Q1<=TIME1H;Q2<=TIME1L; --支路无车辆不减计时
Q3<=TIME2H;Q4<=TIME2L;
END IF; END PROCESS ZS;
YM:PROCESS (num,numseg) BEGIN
CASE num IS
WHEN \WHEN \WHEN \WHEN \WHEN \WHEN \WHEN \WHEN \WHEN \WHEN \ WHEN OTHERS=>NULL; END CASE;
END PROCESS YM; sel<=numsel; seg<=numseg; END one;
5.4 顶层文件：
LIBRARY IEEE;
USE IEEE.STD_LOGIC_1164.ALL; USE IEEE.STD_LOGIC_UNSIGNED.ALL;
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USE IEEE.STD_LOGIC_ARITH.ALL; ENTITY jtd IS
PORT (clk:IN STD_LOGIC; --动态扫描时钟
car:IN STD_LOGIC; --支路车辆传感信号 led:OUT STD_LOGIC_VECTOR(5 DOWNTO 0); --交通灯信号 sel:OUT STD_LOGIC_VECTOR(2 DOWNTO 0); --数码管位码 seg:OUT STD_LOGIC_VECTOR(6 DOWNTO 0)); --数码管段码
END jtd;
ARCHITECTURE one OF jtd IS COMPONENT fP
PORT(clK:IN STD_LOGIC;
CLK1S:OUT STD_LOGIC);
END COMPONENT; COMPONENT kz
PORT(CLK1S,car:IN STD_LOGIC;
TIME1H,TIME1L:OUT STD_LOGIC_VECTOR(3 DOWNTO 0); TIME2H,TIME2L:OUT STD_LOGIC_VECTOR(3 DOWNTO 0); count:OUT STD_LOGIC_VECTOR(6 DOWNTO 0); led:OUT STD_LOGIC_VECTOR(5 DOWNTO 0));
END COMPONENT; COMPONENT xs
PORT(clK,CLK1S,car:IN STD_LOGIC;
TIME1H,TIME1L:IN STD_LOGIC_VECTOR(3 DOWNTO 0); TIME2H,TIME2L:IN STD_LOGIC_VECTOR(3 DOWNTO 0); count:IN STD_LOGIC_VECTOR(6 DOWNTO 0); sel:OUT STD_LOGIC_VECTOR(2 DOWNTO 0); seg:OUT STD_LOGIC_VECTOR(6 DOWNTO 0));
END COMPONENT;
SIGNAL CLK1S:STD_LOGIC;
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SIGNAL count:STD_LOGIC_VECTOR(6 DOWNTO 0);
SIGNAL TIME1H,TIME1L,TIME2H,TIME2L:STD_LOGIC_VECTOR(3 DOWNTO 0); BEGIN
U1:fp PORT MAP(CLK=>clk,CLK1S=>CLK1S); U2:
kz
PORT
MAP
(CLK1S=>CLK1S,car=>car,count=>count,led=>led,TIME1H=>TIME1H, TIME1L=>TIME1L,TIME2H=>TIME2H,TIME2L=>TIME2L); U3:
xs
PORT
MAP
(clk=>clk,CLK1S=>CLK1S,car=>car,count=>count,sel=>sel,seg=>seg, TIME1H=>TIME1H,TIME1L=>TIME1L,TIME2H=>TIME2H,TIME2L=>TIME2L); END;
6 系统仿真与分析
6.1 仿真结果
利用quartusII软件对顶层实体程序进行编译，生成了可以进行仿真定时分析以及下载到可编程器件的相关文件，然后进行仿真，即可得到最后仿真结果。仿真结果如图6.1所示：
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图6.1仿真结果
6.2 仿真结果分析
通过仿真结果可以得出：开始时，支干道没有车辆行驶。主干道处于常通行状态，支干道处于禁止状态；当支干道有车来时，主干道亮绿灯，经行45秒倒计时，支干道亮红灯，经行50秒倒计时；主干道45秒倒计时结束后跳变到黄灯，进行5秒倒计时，支干道继续亮红灯，进行倒计时；主干道5秒倒计时结束后跳变到红灯，经行30秒倒计时，支干道跳变到绿灯，进行25秒倒计时；支干道25秒倒计时结束后跳变到黄灯，进行5秒倒计时，主干道继续亮红灯，进行倒计时；支干道5秒倒计时结束后，判断支干道是否有车，若有车跳变到S1状态，没有车跳变到S0状态
7 设计总结
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