我正在嘗試在我的 Kivy 應用程序中顯示從我的心跳傳感器獲得的值。我已經嘗試使用應用于其他傳感器的數據提取方法，但它不適用于該傳感器，因為它不包含任何功能。我嘗試了多種不同的方法，但它們都沒有返回所需的輸出。有人可以看看傳感器代碼并建議一些方法在我的 kivy 應用程序中顯示輸出。Heartbeatsensot.pyimport time# Import the ADS1x15 module.import Adafruit_ADS1x15if __name__ == '__main__': adc = Adafruit_ADS1x15.ADS1015() # initialization GAIN = 2/3 curState = 0 thresh = 525 # mid point in the waveform P = 512 T = 512 stateChanged = 0 sampleCounter = 0 lastBeatTime = 0 firstBeat = True secondBeat = False Pulse = False IBI = 600 rate = [0]*10 amp = 100 lastTime = int(time.time()*1000) # Main loop. use Ctrl-c to stop the code while True: # read from the ADC Signal = adc.read_adc(0, gain=GAIN) #TODO: Select the correct ADC channel. I have selected A0 here curTime = int(time.time()*1000) sampleCounter += curTime - lastTime; # # keep track of the time in mS with this variable lastTime = curTime N = sampleCounter - lastBeatTime; # # monitor the time since the last beat to avoid noise #print N, Signal, curTime, sampleCounter, lastBeatTime ## find the peak and trough of the pulse wave if Signal < thresh and N > (IBI/5.0)*3.0 : # # avoid dichrotic noise by waiting 3/5 of last IBI if Signal < T : # T is the trough T = Signal; # keep track of lowest point in pulse wave if Signal > thresh and Signal > P: # thresh condition helps avoid noise P = Signal; # P is the peak # keep track of highest point in pulse wave** 我正在嘗試將讀數添加到的 kivy 應用程序**
1 回答
米琪卡哇伊
TA貢獻1998條經驗 獲得超6個贊
我認為你可以通過一些小的修改來完成你想要的。首先添加一個StringProperty到你的ScreenThermo類，并在on_enter()方法中啟動一個線程來運行你的Heartbeatsensot代碼：
from Heartbeatsensot import hearbeatsensot
class ScreenThermo(Screen):
BPM_string = StringProperty('BPM: Not Detected')
def on_enter(self, *args):
Thread(target=hearbeatsensot, args=(self,)).start()
在您的kv文件中，添加對 new 的引用StringProperty：
<ScreenThermo>:
Label:
text: " Pulse rate"
font_size: 50
pos: (35, 100)
Label:
id: TempLabel
text: root.BPM_string # references new StringProperty
font_size: 60
halign: 'center'
valign: 'middle'
現(xiàn)在您只需要將要顯示的任何內容TempLabel放入BPM_string屬性中即可。為此，請更改Heartbeatsensot.py以定義可在Thread. if __name__ == '__main__':只需將該文件中的替換為def hearbeatsensot(screenThermo):如下所示：
import time
# Import the ADS1x15 module.
import Adafruit_ADS1x15
def hearbeatsensot(screenThermo):
adc = Adafruit_ADS1x15.ADS1015()
# initialization
GAIN = 2/3
.
.
.
screenThermo.BPM_string = 'BPM: 65'
.
.
.
然后，在該方法中，只需使用 somethink like screenThermo.BPM_string = 'BPM: 65'（或任何您想要設置的內容）。BPM_string文件中的引用kv將自動設置綁定以更新TempLabel每當BPM_string被修改時。
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