yolov5跌倒检测，当检测到有人跌倒，自动发送邮件，请写出代码

以下是一个基于YOLOv5的跌倒检测的Python代码示例，当检测到有跌倒事件时，会自动发送邮件给指定的收件人。需要安装OpenCV、PyTorch和smtplib库。

import cv2
import torch
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.mime.image import MIMEImage
from email.header import Header

# 加载YOLOv5模型
model = torch.hub.load('ultralytics/yolov5', 'yolov5s')

# 设置邮件发送者和接收者
sender = 'your_email@example.com'
password = 'your_password'
receiver = 'recipient_email@example.com'

# 初始化邮件内容
msg = MIMEMultipart()
msg['From'] = Header('Fall Detection System', 'utf-8')
msg['To'] = Header('Recipient', 'utf-8')
msg['Subject'] = Header('Fall Detected', 'utf-8')

# 开启摄像头
cap = cv2.VideoCapture(0)

while True:
    # 读取摄像头捕获的帧
    ret, frame = cap.read()

    # 将帧转化为Tensor，并进行目标检测
    results = model(frame)

    # 如果检测到跌倒事件
    if 'person' in results.names and 'fall' in results.names:
        persons = results.pandas().xyxy[results.pandas().xyxy['name'] == 'person']
        falls = results.pandas().xyxy[results.pandas().xyxy['name'] == 'fall']
        for person in persons.iterrows():
            for fall in falls.iterrows():
                if person[1]['xmax'] > fall[1]['xmin'] and person[1]['xmin'] < fall[1]['xmax'] and person[1]['ymax'] > fall[1]['ymin'] and person[1]['ymin'] < fall[1]['ymax']:
                    # 将跌倒事件的帧转化为图片附件，添加到邮件中
                    cv2.imwrite('fall.jpg', frame)
                    with open('fall.jpg', 'rb') as f:
                        img = MIMEImage(f.read())
                        img.add_header('Content-Disposition', 'attachment', filename='fall.jpg')
                        msg.attach(img)

                    # 发送邮件
                    try:
                        smtpObj = smtplib.SMTP('smtp.example.com', 587)
                        smtpObj.starttls()
                        smtpObj.login(sender, password)
                        smtpObj.sendmail(sender, receiver, msg.as_string())
                        print("邮件发送成功")
                    except smtplib.SMTPException:
                        print("Error: 无法发送邮件")

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

# 释放资源
cap.release()
cv2.destroyAllWindows()

请注意，这只是一个简单的示例代码，实际应用中需要根据具体情况进行修改和完善。