覆盆子皮AMG8833热敏相机,如何打印最高检测温度?

2024-03-29 10:58:17 发布

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我一直在学习本教程-https://www.instructables.com/Thermal-Camera-AMG833-Raspberry-Pi/

如图所示,它运行良好。我可以在窗口中看到图形温度参考

守则:

from Adafruit_AMG88xx import Adafruit_AMG88xx
import pygame
import os
import math
import time

import numpy as np
from scipy.interpolate import griddata

from colour import Color

#low range of the sensor (this will be blue on the screen)
MINTEMP = 26

#high range of the sensor (this will be red on the screen)
MAXTEMP = 32

#how many color values we can have
COLORDEPTH = 1024

os.putenv('SDL_FBDEV', '/dev/fb1')
pygame.init()

#initialize the sensor
sensor = Adafruit_AMG88xx()

points = [(math.floor(ix / 8), (ix % 8)) for ix in range(0, 64)]
grid_x, grid_y = np.mgrid[0:7:32j, 0:7:32j]

#sensor is an 8x8 grid so lets do a square
height = 240
width = 240

#the list of colors we can choose from
blue = Color("indigo")
colors = list(blue.range_to(Color("red"), COLORDEPTH))

#create the array of colors
colors = [(int(c.red * 255), int(c.green * 255), int(c.blue * 255)) for c in colors]

displayPixelWidth = width / 30
displayPixelHeight = height / 30

lcd = pygame.display.set_mode((width, height))

lcd.fill((255,0,0))

pygame.display.update()
pygame.mouse.set_visible(False)

lcd.fill((0,0,0))
pygame.display.update()

#some utility functions
def constrain(val, min_val, max_val):
    return min(max_val, max(min_val, val))

def map(x, in_min, in_max, out_min, out_max):
  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min

#let the sensor initialize
time.sleep(.1)
    
while(1):

    #read the pixels
    pixels = sensor.readPixels()
    pixels = [map(p, MINTEMP, MAXTEMP, 0, COLORDEPTH - 1) for p in pixels]
    
    #perdorm interpolation
    bicubic = griddata(points, pixels, (grid_x, grid_y), method='cubic')
    
    #draw everything
    for ix, row in enumerate(bicubic):
        for jx, pixel in enumerate(row):
            pygame.draw.rect(lcd, colors[constrain(int(pixel), 0, COLORDEPTH- 1)], (displayPixelHeight * ix, displayPixelWidth * jx, displayPixelHeight, displayPixelWidth))
    
    pygame.display.update()

https://github.com/adafruit/Adafruit_AMG88xx_python/blob/master/examples/thermal_cam.py

但我如何才能将最高测量温度打印到控制台,以便以后使用该值

谢谢


Tags: theinfromimportforvalsensorout
1条回答
网友
1楼 · 发布于 2024-03-29 10:58:17

要获得每个帧的最大值,只需在pixels = sensor.readPixels()之后立即添加print(max(pixels))

这应该足够快,不会对脚本的其余部分造成任何明显的缓慢

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