This is some python code for the raspberry pi that detects when a person has tripped

TripShoes.py

#!/usr/bin/python
import smbus
import math
import twilio
from twilio.rest import Client
import urllib
import json
import socket

#The details for sending messages.
account_sid = __SID__
auth_token = __AUTH__

# Here we are going to get values from the accelerometer. 
# The code is from https://tutorials-raspberrypi.com/measuring-rotation-and-acceleration-raspberry-pi/

# Register
power_mgmt_1 = 0x6b
power_mgmt_2 = 0x6c
 
def read_byte(reg):
    return bus.read_byte_data(address, reg)
 
def read_word(reg):
    h = bus.read_byte_data(address, reg)
    l = bus.read_byte_data(address, reg+1)
    value = (h << 8) + l
    return value
 
def read_word_2c(reg):
    val = read_word(reg)
    if (val >= 0x8000):
        return -((65535 - val) + 1)
    else:
        return val

bus = smbus.SMBus(1) # bus = smbus.SMBus(0) for older pis
address = 0x68       # via i2cdetect

while True:
	try:
		bus = smbus.SMBus(1) # bus = smbus.SMBus(0) for older pis
		address = 0x68       # via i2cdetect
		# Activate the module so we can get more values
		bus.write_byte_data(address, power_mgmt_1, 0)
		#These are the accelerations in the x and y direction. It's scaled so that's why we divided by 16384
		ax2=read_word_2c(0x3b)/16384.0
		ay2=read_word_2c(0x3d)/16384.0
		print("x: "+str(ax2))
		print("y: "+str(ay2))
		if (ax2 < 0.8 and  ay2 > 0.8):
			hostname = socket.gethostname()
			IPAddr = socket.gethostbyname(hostname)
			url = "http://geoip-db.com/json/"+IPAddr
			response = urllib.urlopen(url)
			data = json.loads(response.read())
			msgbody = "User has tripped at location: "+str(data["latitude"])+","+str(data["longitude"])+" in "+str(data["city"])
			# Send a text to guardian - my phone
			client = Client(account_sid, auth_token)
			message = client.api.account.messages.create(
				to=NUM_TO,
				from_=NUM_FROM,
				body=msgbody)
			break
	except IOError as e:
		print("Accelerometer not connected properly")
                continue