用python实现温湿度传感器消除数据抖动

以下是一个简单的Python程序，可以消除温湿度传感器的数据抖动：

import Adafruit_DHT
import time

DHT_SENSOR = Adafruit_DHT.DHT22
DHT_PIN = 4

def read_dht():
    while True:
        humidity, temperature = Adafruit_DHT.read_retry(DHT_SENSOR, DHT_PIN)
        if humidity is not None and temperature is not None:
            return humidity, temperature
        time.sleep(0.1)

def filter_data(humidity, temperature):
    # 使用滑动平均滤波器消除数据抖动
    window_size = 5
    humidity_samples = [humidity] * window_size
    temperature_samples = [temperature] * window_size
    while True:
        humidity_samples.pop(0)
        temperature_samples.pop(0)
        humidity_samples.append(humidity)
        temperature_samples.append(temperature)
        filtered_humidity = sum(humidity_samples) / window_size
        filtered_temperature = sum(temperature_samples) / window_size
        return filtered_humidity, filtered_temperature

while True:
    humidity, temperature = read_dht()
    filtered_humidity, filtered_temperature = filter_data(humidity, temperature)
    print(f"Humidity: {humidity:.2f}%, Temperature: {temperature:.2f}°C")
    print(f"Filtered Humidity: {filtered_humidity:.2f}%, Filtered Temperature: {filtered_temperature:.2f}°C")

该程序使用Adafruit_DHT库读取DHT22传感器的温度和湿度数据，并使用滑动平均滤波器来消除数据抖动。滑动平均滤波器是一种简单的滤波器，它计算最近一些样本的平均值，并将其用作过滤器的输出。在这个例子中，我们使用一个窗口大小为5的滑动平均滤波器，即使用最近的5个样本来计算平均值。您可以根据需要调整窗口大小。