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@ -0,0 +1,101 @@
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"""
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作者:aixsys
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作用:串口形式韧和传感器数据读取处理
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说明:处理的数据格式如下:
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b'\xfa\x19,\xaa'
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b'\xfa\x1a\x16\xaa\xfa\x1a\x16\xaa'
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这个代码可以进行呼吸带传感器的数据保存了,但是有点问题,另外还不能动态显示数据
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"""
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import serial # 导入模块
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import threading
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import time
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import binascii
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import re
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from statistics import mean
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import numpy as np
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import sys
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import openpyxl
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import pandas as pd
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STRGLO = "" # 读取的数据
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BOOL = True # 读取标志位
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# 读数代码本体实现
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def ReadData(ser):
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global STRGLO, BOOL
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# 循环接收数据,此为死循环,可用线程实现.有时候硬件接口问题常导致收不到数据要合理处理。并对接收的数据进行一定处理。
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while BOOL:
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if ser.in_waiting:
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STRGLO = ser.read(ser.in_waiting) # b'\xfa\x19-\xaa' ,b'\xfa\x1a\x16\xaa\xfa\x1a\x16\xaa' # data在后面进行截取。
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# 判断数据格式并做处理
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hex_list = list(STRGLO)
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data_len = len(hex_list)
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if data_len < 4 or hex_list[0] != 0xfa or hex_list[-1] != 0xaa:
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continue
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else:
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#print(hex_list)
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strength1 = hex_list[3]
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strength2 = hex_list[8]
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strength3 = hex_list[13]
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strength1 = 1.18327*strength1 + 0.0113*strength1*strength1 + 0.0000610045*strength1*strength1*strength1
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strength2 = 1.16311*strength2 + 0.0108*strength2*strength2 + 0.000062639*strength2*strength2*strength2
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strength3 = 0.86501*strength3 + 0.0166*strength3*strength3 + 0.0000425563*strength3*strength3*strength3
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print(strength1,strength2,strength3)
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# 打开串口
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# 端口,GNU / Linux上的/ dev / ttyUSB0 等 或 Windows上的 COM3 等
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# 波特率,标准值之一:50,75,110,134,150,200,300,600,1200,1800,2400,4800,9600,19200,38400,57600,115200
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# 超时设置,None:永远等待操作,0为立即返回请求结果,其他值为等待超时时间(单位为秒)
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def DOpenPort(portx, bps, timeout):
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global ser, ret
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ret = False
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try:
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# 打开串口,并得到串口对象
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ser = serial.Serial(portx, bps, timeout=timeout)
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# 判断是否打开成功,若成功则调用ReadData读取数据获得STRDLO
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if ser.is_open:
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# print("打开成功")
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ret = True
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ser.flushInput() # 清空缓冲区
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threading.Thread(target=ReadData, args=(ser,)).start()
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# else:
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# print("open failed")
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# # DColsePort(ser) # 关闭端口
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# ser.close() # 关闭端口
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except Exception as e:
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print("---异常---:", e)
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return ser, ret
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# 关闭串口
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def DColsePort(ser):
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global BOOL
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BOOL = False
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threading.currentThread().join()
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ser.close()
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# 读数据 传递清空
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def DReadPort():
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global STRGLO
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data_byte = STRGLO # 用中间变量data_byte传数
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STRGLO = b'' # 清空当次读数,并且是字节类型 b''
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return data_byte # 返回当次读数
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# 主程序
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if __name__ == "__main__":
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ser, ret = DOpenPort("COM3", 115200, None) # 串口根据自己电脑情况手动输入更新,我这里是COM9,这里已经调用了ReadData()
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if ret: # 判断串口是否成功打开,成功打开的话循环读取数据
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# print("打开成功")
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while True:
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ReadData(ser) # 读数据并处理显示。
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# 关闭串口
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DColsePort(ser)
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