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module fft_control(clk,rst,/*re_fifo,*/wr_fifo,rst_fifo,w_cycle,wr_full1,wr_full2,wr_fifo1,wr_fifo2,fftpts_in,sink_eop,sink_sop,sink_valid,start_16,fft16_over,switch,re_im,out_reim,count_in,recycle,re1,re2); input clk,rst; input wr_fifo,wr_full1,start_16,fft16_over,wr_full2; input [47:0] re_im; output [10:0] fftpts_in; output /*re_fifo,*/sink_eop,sink_sop,sink_valid; output rst_fifo,re1,re2; output w_cycle,switch,wr_fifo1,wr_fifo2; output [13:0] count_in; output [47:0] out_reim; output[4:0] recycle; wire [47:0] out_reim; reg pd; reg w_cycle; reg re_fifo; reg rst_fifo; reg [3:0] state1; reg [4:0] recycle; //修改,加入周期计数,积累16周期 reg [4:0] cnt;//存储计数 reg [10:0] fftpts_in; reg [13:0] count_in; reg sink_eop,sink_sop; reg sink_valid; reg flag; assign out_reim=flag? re_im:48'd0; assign re1=pd? re_fifo:1'b0; assign re2=pd? 1'b0:re_fifo; assign wr_fifo2=pd? wr_fifo:1'b0; assign wr_fifo1=pd? 1'b0:wr_fifo; always @(posedge clk) if(!rst) begin re_fifo<=1'b0; state1<=4'b0000; rst_fifo<=1'b1; w_cycle<=1'b0; recycle<=5'd0;//周期计数 fftpts_in<=11'd1024; sink_eop<=1'b0; sink_sop<=1'b0; sink_valid<=1'b0; count_in<=12'd0; flag<=1'b1; pd<=1'b0; cnt<=5'd0; end else case(state1) 4'b0000: begin rst_fifo<=1'b0; //1024点FFT变换阶段 flag<=1'b1; //16 dian bianhuan qiehuan biaozhiwei count_in<=14'd0; //jisu re_fifo<=1'b0; //ad shuju duqu fifo shineng w_cycle<=1'b0; //zhouqi biaozhiwei recycle<=5'd0;//周期计数 sink_eop<=1'b0; //FFT shuju shuru qishibiaozhi sink_sop<=1'b0; //FFT shuru jieshu biaozhi sink_valid<=1'b0; //shuju shuruyouxiao biaozhiwei fftpts_in<=11'd1024; //fft shuruchangdu if(((wr_full1||wr_full2)==1'b1)&&(wr_fifo==1'b0)) begin //dang fifo duman 2048 wr_full==1'b1,qie wr_fifo==1'b0; if(cnt<=5'd16) begin state1<=4'b0001; //zhuanru xia yige zhuangtai re_fifo<=1'b1; //dushineng count_in<=10'd0; cnt<=5'd0; end else begin state1<=4'b0001; //zhuanru xia yige zhuangtai re_fifo<=1'b1; //dushineng count_in<=10'd0; cnt<=cnt+1'b1; pd<=~pd; end end else begin state1<=4'b0000; end end 4'b0001: begin sink_valid<=1'b1; //数据输入有效标志 sink_sop<=1'b1; //输入数据流起始标志 sink_eop<=1'b0; //输入数据流结束标志 state1<=4'b0010; //转入下一状态,数据开始输入 count_in<=count_in+1'b1; //开始计第一点数据 end 4'b0010: begin if(count_in==14'd2047) begin //1024dianFFT if(recycle==5'd15) // 增加周期判断 begin sink_eop<=1'b1; //shujukuai jieshu biaozhi count_in<=14'd0; w_cycle<=1'b1; state1<=4'b0011; //zhuanru 16dian bianhuan end else begin recycle=recycle+1; sink_eop<=1'b1; count_in<=10'd0; w_cycle<=1'b1; state1<=4'b0000; end end else if(count_in==14'd1023) begin //shang shaopin sink_eop<=1'b1; //shangshaopin shuju shuru jieshu state1<=4'b0001; //fanhui shang yi ge zhuangtai wanchengxiashaopinshuju shuru count_in<=count_in+1'b1; end else count_in<=count_in+1'b1; sink_sop<=1'b0; end //16dian FFT bianhuan jieduan 4'b0011: begin re_fifo<=1'b0; fftpts_in<=11'd16; //停止从fifo中读取数据 sink_eop<=1'b0; //shuju jiesubiaozhi zhi 0 sink_valid<=1'b0; w_cycle<=1'b0; count_in<=10'd0; if(start_16) state1<=4'b0100; //16点变换开始 end 4'b0100: begin sink_valid<=1'b1; //16dianbianhuan shujushuruzhunbeijieduan sink_sop<=1'b1; sink_eop<=1'b0; state1<=4'b0101; end 4'b0101: begin if(count_in==14'd15) begin //16dianshuju shifou shuruwanbi sink_eop<=1'b1; count_in<=12'd0; if(fft16_over) //16zhouqi shuju chuliwanbi state1<=4'b0000; //chongxinkaishixiayilunshuju shuru else state1<=4'b0110; //ruguomeijieshu jixuxiayige16dianbianhuan end else begin count_in<=count_in+1'b1; flag<=1'b1; //biaozhiwei zhi wei 1 end sink_sop<=1'b0; end 4'b0110: begin sink_eop<=1'b0; sink_sop<=1'b1; //sink_valid<=1'b0; state1<=4'b0101; flag<=1'b1; end default: state1<=state1; endcase reg switch; always @(posedge clk) if(!rst) switch<=1'b1; else case(fftpts_in) 11'd512: switch<=1'b1; 11'd16: switch<=1'b0; default: switch<=switch; endcase endmodule |
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module fft_control(clk,rst,/*re_fifo,*/wr_fifo,rst_fifo,w_cycle,wr_full1,wr_full2,wr_fifo1,wr_fifo2,fftpts_in,sink_eop,sink_sop,sink_valid,start_16,fft16_over,switch,re_im,out_reim,count_in,recycle,re1,re2); input clk,rst; input wr_fifo,wr_full1,start_16,fft16_over,wr_full2; input [47:0] re_im; output [10:0] fftpts_in; output /*re_fifo,*/sink_eop,sink_sop,sink_valid; output rst_fifo,re1,re2; output w_cycle,switch,wr_fifo1,wr_fifo2; output [13:0] count_in; output [47:0] out_reim; output[4:0] recycle; wire [47:0] out_reim; reg pd; reg w_cycle; reg re_fifo; reg rst_fifo; reg [3:0] state1; reg [4:0] recycle; //修改,加入周期计数,积累16周期 reg [4:0] cnt;//存储计数 reg [10:0] fftpts_in; reg [13:0] count_in; reg sink_eop,sink_sop; reg sink_valid; reg flag; assign out_reim=flag? re_im:48'd0; assign re1=pd? re_fifo:1'b0; assign re2=pd? 1'b0:re_fifo; assign wr_fifo2=pd? wr_fifo:1'b0; assign wr_fifo1=pd? 1'b0:wr_fifo; always @(posedge clk) if(!rst) begin re_fifo<=1'b0; state1<=4'b0000; rst_fifo<=1'b1; w_cycle<=1'b0; recycle<=5'd0;//周期计数 fftpts_in<=11'd1024; sink_eop<=1'b0; sink_sop<=1'b0; sink_valid<=1'b0; count_in<=12'd0; flag<=1'b1; pd<=1'b0; cnt<=5'd0; end else case(state1) 4'b0000: begin rst_fifo<=1'b0; //1024点FFT变换阶段 flag<=1'b1; //16 dian bianhuan qiehuan biaozhiwei count_in<=14'd0; //jisu re_fifo<=1'b0; //ad shuju duqu fifo shineng w_cycle<=1'b0; //zhouqi biaozhiwei recycle<=5'd0;//周期计数 sink_eop<=1'b0; //FFT shuju shuru qishibiaozhi sink_sop<=1'b0; //FFT shuru jieshu biaozhi sink_valid<=1'b0; //shuju shuruyouxiao biaozhiwei fftpts_in<=11'd1024; //fft shuruchangdu if(((wr_full1||wr_full2)==1'b1)&&(wr_fifo==1'b0)) begin //dang fifo duman 2048 wr_full==1'b1,qie wr_fifo==1'b0; if(cnt<=5'd16) begin state1<=4'b0001; //zhuanru xia yige zhuangtai re_fifo<=1'b1; //dushineng count_in<=10'd0; cnt<=5'd0; end else begin state1<=4'b0001; //zhuanru xia yige zhuangtai re_fifo<=1'b1; //dushineng count_in<=10'd0; cnt<=cnt+1'b1; pd<=~pd; end end else begin state1<=4'b0000; end end 4'b0001: begin sink_valid<=1'b1; //数据输入有效标志 sink_sop<=1'b1; //输入数据流起始标志 sink_eop<=1'b0; //输入数据流结束标志 state1<=4'b0010; //转入下一状态,数据开始输入 count_in<=count_in+1'b1; //开始计第一点数据 end 4'b0010: begin if(count_in==14'd2047) begin //1024dianFFT if(recycle==5'd15) // 增加周期判断 begin sink_eop<=1'b1; //shujukuai jieshu biaozhi count_in<=14'd0; w_cycle<=1'b1; state1<=4'b0011; //zhuanru 16dian bianhuan end else begin recycle=recycle+1; sink_eop<=1'b1; count_in<=10'd0; w_cycle<=1'b1; state1<=4'b0000; end end else if(count_in==14'd1023) begin //shang shaopin sink_eop<=1'b1; //shangshaopin shuju shuru jieshu state1<=4'b0001; //fanhui shang yi ge zhuangtai wanchengxiashaopinshuju shuru count_in<=count_in+1'b1; end else count_in<=count_in+1'b1; sink_sop<=1'b0; end //16dian FFT bianhuan jieduan 4'b0011: begin re_fifo<=1'b0; fftpts_in<=11'd16; //停止从fifo中读取数据 sink_eop<=1'b0; //shuju jiesubiaozhi zhi 0 sink_valid<=1'b0; w_cycle<=1'b0; count_in<=10'd0; if(start_16) state1<=4'b0100; //16点变换开始 end 4'b0100: begin sink_valid<=1'b1; //16dianbianhuan shujushuruzhunbeijieduan sink_sop<=1'b1; sink_eop<=1'b0; state1<=4'b0101; end 4'b0101: begin if(count_in==14'd15) begin //16dianshuju shifou shuruwanbi sink_eop<=1'b1; count_in<=12'd0; if(fft16_over) //16zhouqi shuju chuliwanbi state1<=4'b0000; //chongxinkaishixiayilunshuju shuru else state1<=4'b0110; //ruguomeijieshu jixuxiayige16dianbianhuan end else begin count_in<=count_in+1'b1; flag<=1'b1; //biaozhiwei zhi wei 1 end sink_sop<=1'b0; end 4'b0110: begin sink_eop<=1'b0; sink_sop<=1'b1; //sink_valid<=1'b0; state1<=4'b0101; flag<=1'b1; end default: state1<=state1; endcase reg switch; always @(posedge clk) if(!rst) switch<=1'b1; else case(fftpts_in) 11'd512: switch<=1'b1; 11'd16: switch<=1'b0; default: switch<=switch; endcase endmodule //先输入单个周期的1024点个数据然后进行周期计算,即录入16个单周期采样数据,设置快速傅里叶变换标志,即进行16点快速变换,或1024点快速变换 |
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module fft_control(clk,rst,/*re_fifo,*/wr_fifo,rst_fifo,w_cycle,wr_full1,wr_full2,wr_fifo1,wr_fifo2,fftpts_in,sink_eop,sink_sop,sink_valid,start_16,fft16_over,switch,re_im,out_reim,count_in,recycle,re1,re2); input clk,rst; input wr_fifo,wr_full1,start_16,fft16_over,wr_full2; input [47:0] re_im; output [10:0] fftpts_in; output /*re_fifo,*/sink_eop,sink_sop,sink_valid; output rst_fifo,re1,re2; output w_cycle,switch,wr_fifo1,wr_fifo2; output [13:0] count_in; output [47:0] out_reim; output[4:0] recycle; wire [47:0] out_reim; reg pd; reg w_cycle; reg re_fifo; reg rst_fifo; reg [3:0] state1; reg [4:0] recycle; //修改,加入周期计数,积累16周期 reg [4:0] cnt;//存储计数 reg [10:0] fftpts_in; reg [13:0] count_in; reg sink_eop,sink_sop; reg sink_valid; reg flag; assign out_reim=flag? re_im:48'd0; assign re1=pd? re_fifo:1'b0; assign re2=pd? 1'b0:re_fifo; assign wr_fifo2=pd? wr_fifo:1'b0; assign wr_fifo1=pd? 1'b0:wr_fifo; always @(posedge clk) if(!rst) begin re_fifo<=1'b0; state1<=4'b0000; rst_fifo<=1'b1; w_cycle<=1'b0; recycle<=5'd0;//周期计数 fftpts_in<=11'd1024; sink_eop<=1'b0; sink_sop<=1'b0; sink_valid<=1'b0; count_in<=12'd0; flag<=1'b1; pd<=1'b0; cnt<=5'd0; end else case(state1) 4'b0000: begin rst_fifo<=1'b0; //1024点FFT变换阶段 flag<=1'b1; //16 dian bianhuan qiehuan biaozhiwei count_in<=14'd0; //jisu re_fifo<=1'b0; //ad shuju duqu fifo shineng w_cycle<=1'b0; //zhouqi biaozhiwei recycle<=5'd0;//周期计数 sink_eop<=1'b0; //FFT shuju shuru qishibiaozhi sink_sop<=1'b0; //FFT shuru jieshu biaozhi sink_valid<=1'b0; //shuju shuruyouxiao biaozhiwei fftpts_in<=11'd1024; //fft shuruchangdu if(((wr_full1||wr_full2)==1'b1)&&(wr_fifo==1'b0)) begin //dang fifo duman 2048 wr_full==1'b1,qie wr_fifo==1'b0; if(cnt<=5'd16) begin state1<=4'b0001; //zhuanru xia yige zhuangtai re_fifo<=1'b1; //dushineng count_in<=10'd0; cnt<=5'd0; end else begin state1<=4'b0001; //zhuanru xia yige zhuangtai re_fifo<=1'b1; //dushineng count_in<=10'd0; cnt<=cnt+1'b1; pd<=~pd; end end else begin state1<=4'b0000; end end 4'b0001: begin sink_valid<=1'b1; //数据输入有效标志 sink_sop<=1'b1; //输入数据流起始标志 sink_eop<=1'b0; //输入数据流结束标志 state1<=4'b0010; //转入下一状态,数据开始输入 count_in<=count_in+1'b1; //开始计第一点数据 end 4'b0010: begin if(count_in==14'd2047) begin //1024dianFFT if(recycle==5'd15) // 增加周期判断 begin sink_eop<=1'b1; //shujukuai jieshu biaozhi count_in<=14'd0; w_cycle<=1'b1; state1<=4'b0011; //zhuanru 16dian bianhuan end else begin recycle=recycle+1; sink_eop<=1'b1; count_in<=10'd0; w_cycle<=1'b1; state1<=4'b0000; end end else if(count_in==14'd1023) begin //shang shaopin sink_eop<=1'b1; //shangshaopin shuju shuru jieshu state1<=4'b0001; //fanhui shang yi ge zhuangtai wanchengxiashaopinshuju shuru count_in<=count_in+1'b1; end else count_in<=count_in+1'b1; sink_sop<=1'b0; end //16dian FFT bianhuan jieduan 4'b0011: begin re_fifo<=1'b0; fftpts_in<=11'd16; //停止从fifo中读取数据 sink_eop<=1'b0; //shuju jiesubiaozhi zhi 0 sink_valid<=1'b0; w_cycle<=1'b0; count_in<=10'd0; if(start_16)begin state1<=4'b0100; //16点变换开始 end else begin state1<=4'b0011; end end 4'b0100: begin sink_valid<=1'b1; //16dianbianhuan shujushuruzhunbeijieduan sink_sop<=1'b1; sink_eop<=1'b0; state1<=4'b0101; end 4'b0101: begin if(count_in==14'd15) begin //16dianshuju shifou shuruwanbi sink_eop<=1'b1; count_in<=12'd0; if(fft16_over) //16zhouqi shuju chuliwanbi state1<=4'b0000; //chongxinkaishixiayilunshuju shuru else state1<=4'b0110; //ruguomeijieshu jixuxiayige16dianbianhuan end else begin count_in<=count_in+1'b1; flag<=1'b1; //biaozhiwei zhi wei 1 end sink_sop<=1'b0; end 4'b0110: begin sink_eop<=1'b0; sink_sop<=1'b1; //sink_valid<=1'b0; state1<=4'b0101; flag<=1'b1; end default: state1<=state1; endcase reg switch; always @(posedge clk) if(!rst) switch<=1'b1; else case(fftpts_in) 11'd512: switch<=1'b1; 11'd16: switch<=1'b0; default: switch<=switch; endcase endmodule |
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可能是状态转移条件有误,一直达不到转移的条件
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module fft_control(clk,rst,/*re_fifo,*/wr_fifo,rst_fifo,w_cycle,wr_full1,wr_full2,wr_fifo1,wr_fifo2,fftpts_in,sink_eop,sink_sop,sink_valid,start_16,fft16_over,switch,re_im,out_reim,count_in,recycle,re1,re2); input clk,rst; input wr_fifo,wr_full1,start_16,fft16_over,wr_full2; input [47:0] re_im; output [10:0] fftpts_in; output /*re_fifo,*/sink_eop,sink_sop,sink_valid; output rst_fifo,re1,re2; output w_cycle,switch,wr_fifo1,wr_fifo2; output [13:0] count_in; output [47:0] out_reim; output[4:0] recycle; wire [47:0] out_reim; reg pd; reg w_cycle; reg re_fifo; reg rst_fifo; reg [3:0] state1; reg [4:0] recycle; //修改,加入周期计数,积累16周期 reg [4:0] cnt;//存储计数 reg [10:0] fftpts_in; reg [13:0] count_in; reg sink_eop,sink_sop; reg sink_valid; reg flag; assign out_reim=flag? re_im:48'd0; assign re1=pd? re_fifo:1'b0; assign re2=pd? 1'b0:re_fifo; assign wr_fifo2=pd? wr_fifo:1'b0; assign wr_fifo1=pd? 1'b0:wr_fifo; always @(posedge clk) if(!rst) begin re_fifo<=1'b0; state1<=4'b0000; rst_fifo<=1'b1; w_cycle<=1'b0; recycle<=5'd0;//周期计数 fftpts_in<=11'd1024; sink_eop<=1'b0; sink_sop<=1'b0; sink_valid<=1'b0; count_in<=12'd0; flag<=1'b1; pd<=1'b0; cnt<=5'd0; end else case(state1) 4'b0000: begin rst_fifo<=1'b0; //1024点FFT变换阶段 flag<=1'b1; //16 dian bianhuan qiehuan biaozhiwei count_in<=14'd0; //jisu re_fifo<=1'b0; //ad shuju duqu fifo shineng w_cycle<=1'b0; //zhouqi biaozhiwei recycle<=5'd0;//周期计数 sink_eop<=1'b0; //FFT shuju shuru qishibiaozhi sink_sop<=1'b0; //FFT shuru jieshu biaozhi sink_valid<=1'b0; //shuju shuruyouxiao biaozhiwei fftpts_in<=11'd1024; //fft shuruchangdu if(((wr_full1||wr_full2)==1'b1)&&(wr_fifo==1'b0)) begin //dang fifo duman 2048 wr_full==1'b1,qie wr_fifo==1'b0; if(cnt<=5'd16) begin state1<=4'b0001; //zhuanru xia yige zhuangtai re_fifo<=1'b1; //dushineng count_in<=10'd0; cnt<=5'd0; end else begin state1<=4'b0001; //zhuanru xia yige zhuangtai re_fifo<=1'b1; //dushineng count_in<=10'd0; cnt<=cnt+1'b1; pd<=~pd; end end else begin state1<=4'b0000; end end 4'b0001: begin sink_valid<=1'b1; //数据输入有效标志 sink_sop<=1'b1; //输入数据流起始标志 sink_eop<=1'b0; //输入数据流结束标志 state1<=4'b0010; //转入下一状态,数据开始输入 count_in<=count_in+1'b1; //开始计第一点数据 end 4'b0010: begin if(count_in==14'd2047) begin //1024dianFFT if(recycle==5'd15) // 增加周期判断 begin sink_eop<=1'b1; //shujukuai jieshu biaozhi count_in<=14'd0; w_cycle<=1'b1; state1<=4'b0011; //zhuanru 16dian bianhuan end else begin recycle=recycle+1; sink_eop<=1'b1; count_in<=10'd0; w_cycle<=1'b1; state1<=4'b0000; end end else if(count_in==14'd1023) begin //shang shaopin sink_eop<=1'b1; //shangshaopin shuju shuru jieshu state1<=4'b0001; //fanhui shang yi ge zhuangtai wanchengxiashaopinshuju shuru count_in<=count_in+1'b1; end else count_in<=count_in+1'b1; sink_sop<=1'b0; end //16dian FFT bianhuan jieduan 4'b0011: begin re_fifo<=1'b0; fftpts_in<=11'd16; //停止从fifo中读取数据 sink_eop<=1'b0; //shuju jiesubiaozhi zhi 0 sink_valid<=1'b0; w_cycle<=1'b0; count_in<=10'd0; if(start_16)begin state1<=4'b0100; //16点变换开始 end else begin state1<=4'b0011; end end 4'b0100: begin sink_valid<=1'b1; //16dianbianhuan shujushuruzhunbeijieduan sink_sop<=1'b1; sink_eop<=1'b0; state1<=4'b0101; end 4'b0101: begin if(count_in==14'd15) begin //16dianshuju shifou shuruwanbi sink_eop<=1'b1; count_in<=12'd0; if(fft16_over) //16zhouqi shuju chuliwanbi state1<=4'b0000; //chongxinkaishixiayilunshuju shuru else state1<=4'b0110; //ruguomeijieshu jixuxiayige16dianbianhuan end else begin count_in<=count_in+1'b1; flag<=1'b1; //biaozhiwei zhi wei 1 end sink_sop<=1'b0; end 4'b0110: begin sink_eop<=1'b0; sink_sop<=1'b1; //sink_valid<=1'b0; state1<=4'b0101; flag<=1'b1; end default: state1<=state1; endcase reg switch; always @(posedge clk) if(!rst) switch<=1'b1; else case(fftpts_in) 11'd512: switch<=1'b1; 11'd16: switch<=1'b0; default: switch<=switch; endcase endmodule //先输入单个周期的1024点个数据然后进行周期计算,即录入16个单周期采样数据,设置快速傅里叶变换标志,即进行16点快速变换,或1024点快速变换 |
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会不会是初始信号(((wr_full1||wr_full2)==1'b1)&&(wr_fifo==1'b0)) 没给到或不满足建立时间,导致状态机只能停留在初始状态。为什么不将条件改成 (wr_full1||wr_full2)&&(!wr_fifo),或新定义寄存器赋值或组合逻辑赋值flag_start = (((wr_full1||wr_full2)==1'b1)&&(wr_fifo==1'b0))拿出状态机作为判决条件if(flag_start )
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WZH1991 发表于 2017-10-10 23:41 嗯,我试试,新手编程,写的不规范,谢谢啊 |
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WZH1991 发表于 2017-10-10 23:41 嗯,我试试,新手编程,写的不规范,谢谢啊 |
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WZH1991 发表于 2017-10-10 23:41 嗯,我试试,新手编程,写的不规范,谢谢啊 |
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