用VHDL设计一个序列检测器检测序列1110010，每输入一个序列1110010则会在输出端输出一个1，其余时间为0。

以下是一个基于VHDL的序列检测器的代码示例：

library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.NUMERIC_STD.ALL;

entity sequence_detector is
    Port ( clk : in  STD_LOGIC;
           reset : in  STD_LOGIC;
           input : in  STD_LOGIC;
           output : out  STD_LOGIC);
end sequence_detector;

architecture Behavioral of sequence_detector is

    type state_type is (S0, S1, S2, S3, S4, S5, S6);
    signal state : state_type := S0;

begin

    process (clk, reset)
    begin
        if reset = '1' then
            state <= S0;
            output <= '0';
        elsif rising_edge(clk) then
            case state is
                when S0 =>
                    if input = '1' then
                        state <= S1;
                    else
                        state <= S0;
                    end if;
                when S1 =>
                    if input = '1' then
                        state <= S2;
                    else
                        state <= S0;
                    end if;
                when S2 =>
                    if input = '1' then
                        state <= S3;
                    else
                        state <= S0;
                    end if;
                when S3 =>
                    if input = '0' then
                        state <= S4;
                    else
                        state <= S0;
                    end if;
                when S4 =>
                    if input = '0' then
                        state <= S5;
                    else
                        state <= S0;
                    end if;
                when S5 =>
                    if input = '1' then
                        state <= S6;
                        output <= '1';
                    else
                        state <= S0;
                    end if;
                when S6 =>
                    state <= S0;                    
            end case;
        end if;
    end process;

end Behavioral;

该代码使用了一个 FSM（有限状态机）来检测序列1110010。在每个时钟上升沿，它会检查当前输入是否与期望的序列匹配。如果匹配，则将状态转换到下一个状态，否则将状态重置为起始状态S0。当检测到完整的序列时，在输出端口上输出1，否则输出0。