出租车计费设计VHDL代码Quartus仿真

名称：出租车计费设计VHDL代码Quartus仿真

软件：Quartus

语言：VHDL

代码功能：

出租车计费

1、可以控制行程开始和停止

2、通过车轮脉冲判断车行驶里程

3、显示总费用和里程

4、3.0公里以内起步价5.0元，大于3.0公里按0.2元/0.1公里计费

5、停车按时间计费，每1分钟1元

FPGA代码Verilog/VHDL代码资源下载：www.hdlcode.com

演示视频：

设计文档：

1. 工程文件

2. 程序文件

3. 程序编译

4. RTL图

5. Testbench

6. 仿真图

整体仿真图

速度及判断模块

控制模块

里程计算模块

时间计算模块

显示模块

部分代码展示:

LIBRARY?ieee;
???USE?ieee.std_logic_1164.all;
ENTITY?taxi_fee?IS
???PORT?(
??????clk????????:?IN?STD_LOGIC;--50MHz基准频率CLOCK0
??????reset??????:?IN?STD_LOGIC;--复位信号，低有效?
??????
??????stop???????:?IN?STD_LOGIC;--本次行程结束，停止计费，高有效
??????start??????:?IN?STD_LOGIC;--启动信号，行程开始，高有效?
??????
??????Wheel_pulse?????:?IN?STD_LOGIC;--车轮脉冲
??????
--3位数码管显示费用
??????Kmmoney_L_HEX????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);--合计费用?HML=xxx?（BCD码显示）
??????Kmmoney_M_HEX????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);
??????Kmmoney_H_HEX????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);
??????--里程和时间切换显示
??????Kmcount_H_HEX????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);--总路程，里程范围为HL=0~99.9（BCD码显示）
??????Kmcount_M_HEX????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);
??????Kmcount_L_HEX????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0)
???);
END?taxi_fee;
ARCHITECTURE?trans?OF?taxi_fee?IS
--速度计算及判断模块
COMPONENT?speed_pulse?IS
???PORT?(
??????clk?????????????:?IN?STD_LOGIC;--标准时钟，10hz?
??????reset???????????:?IN?STD_LOGIC;--复位信号，低有效?
??Wheel_pulse?????:?IN?STD_LOGIC;--车轮脉冲
??????Speed???????????:?OUT?STD_LOGIC;--0：暂停等待；1：行驶
??????kilometre_01???:?OUT?STD_LOGIC;--0.1公里产生一次
??????minute_en??:?OUT?STD_LOGIC--暂停等待,2min产生一次脉冲
???);
END?COMPONENT;
--模块例化
???COMPONENT?display?IS
??????PORT?(
?????????clk????????:?IN?STD_LOGIC;
?????????reset??????:?IN?STD_LOGIC;
Speed????????????:?IN?STD_LOGIC;--0：暂停等待；1：行驶
?????????wait_time????:?IN?STD_LOGIC_VECTOR(7?DOWNTO?0);
?????????totel_money?:?IN?STD_LOGIC_VECTOR(15?DOWNTO?0);
?????????mileage????:?IN?STD_LOGIC_VECTOR(7?DOWNTO?0);
?????????Kmmoney_L_HEX??:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);
?????????Kmmoney_M_HEX??:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);
?????????Kmmoney_H_HEX??:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);
?????????Kmcount_H_HEX??:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);
?????????Kmcount_M_HEX????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);
?????????Kmcount_L_HEX??:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0)
??????);
???END?COMPONENT;

点击链接获取代码文件：http://www.hdlcode.com/index.php?m=home&c=View&a=index&aid=1320