imx219_plus_relay.py

import cv2
import RPi.GPIO as GPIO
import time

RelayA = [21, 20, 26] #CH1, CH2, CH3
RelayB = [16, 19, 13]


GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)

#GPIO.setup(RelayB, GPIO.OUT, initial=GPIO.LOW)
GPIO.setup(RelayA, GPIO.OUT, initial=GPIO.LOW)
time.sleep(0.5)

def gstreamer_pipeline(
    capture_width=1280,
    capture_height=720,
    display_width=640,
    display_height=480,
    framerate=24,
    flip_method=2, #flip_method=0 180 derece
):
    return (
        "nvarguscamerasrc ! "
        "video/x-raw(memory:NVMM), "
        "width=(int)%d, height=(int)%d, framerate=(fraction)%d/1 ! "
        "nvvidconv flip-method=%d ! "
        "video/x-raw, width=(int)%d, height=(int)%d, format=(string)BGRx ! "
        "videoconvert ! "
        "video/x-raw, format=(string)BGR ! appsink drop=True"
        % (
            capture_width,
            capture_height,
            framerate,
            flip_method,
            display_width,
            display_height,
        )
    )

fire_cascade = cv2.CascadeClassifier('fire_detection.xml')

cap = cv2.VideoCapture(gstreamer_pipeline(), cv2.CAP_GSTREAMER)

while(True):
    ret, frame = cap.read()
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
    fire = fire_cascade.detectMultiScale(frame, 1.03, 4) #1.05 ,4 --> çok sıkışırsa scale factor 1.15, minNeighbors artınca much faster, less accurate

    	#cv.CascadeClassifier.detectMultiScale(	image[, scaleFactor[, minNeighbors[, flags[, minSize[, maxSize]]]]]

    for (x,y,w,h) in fire:
        cv2.rectangle(frame,(x-20,y-20),(x+w+20,y+h+20),(255,0,0),2)
        roi_gray = gray[y:y+h, x:x+w]
        roi_color = frame[y:y+h, x:x+w]
        
        print("fire!")

"""
            #fire çıktısını aldığında çalışacak
try:
	while True:
		print("turn off")
		GPIO.output(RelayA, GPIO.LOW)
		time.sleep(1)
		print("turn on")
		GPIO.output(RelayA, GPIO.HIGH)		
		time.sleep(10) #alarm suresi sn

except:
    GPIO.output(RelayA, GPIO.LOW) #role NO kontak kullaniminda LOW, aksi halde HIGH
    GPIO.cleanup()


"""
	

    cv2.imshow('frame', frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):

        break


    

cap.release()
cv2.destroyAllWindows()