写一段verilog语言识别R波计算心率
时间: 2023-04-07 20:05:34 浏览: 71
我可以回答这个问题。以下是一段Verilog代码,用于识别R波并计算心率:
```
module R_wave_detector(
input clk,
input reset,
input ecg_signal,
output reg r_wave_detected,
output reg [15:0] heart_rate
);
reg [15:0] counter;
reg [15:0] r_wave_counter;
reg [15:0] r_wave_interval;
reg [15:0] last_r_wave_time;
reg [15:0] current_time;
parameter R_WAVE_THRESHOLD = 200; // R波阈值
always @(posedge clk) begin
if (reset) begin
counter <= 0;
r_wave_counter <= 0;
r_wave_interval <= 0;
last_r_wave_time <= 0;
current_time <= 0;
r_wave_detected <= 0;
heart_rate <= 0;
end else begin
counter <= counter + 1;
current_time <= counter * 10; // 采样率为100Hz,每个采样点间隔10ms
if (ecg_signal > R_WAVE_THRESHOLD && current_time - last_r_wave_time > 200) begin
// 检测到R波
r_wave_detected <= 1;
r_wave_counter <= r_wave_counter + 1;
r_wave_interval <= current_time - last_r_wave_time;
last_r_wave_time <= current_time;
end else begin
r_wave_detected <= 0;
end
if (counter == 9999) begin
// 计算心率
heart_rate <= 60000 / r_wave_interval;
counter <= 0;
end
end
end
endmodule
```
这段代码使用了一个简单的R波检测算法,当心电信号超过阈值并且距离上一个R波的时间超过200ms时,就认为检测到了一个R波。然后根据R波的时间间隔计算心率。