View source for Alarm systems (Fire, intrusion, ...)

In this page some alarm systems, from different authors, are described, one section for each system.
==Fire detection script based on temperature sensors==
In https://github.com/CreasolTech/domoticz_lua_scripts it is' possible to find 4 files that can be used to '''detect fire checking the rooms temperature'''. 

'''When a room temperature increases too fast, the script send an alert by Telegram''' specifying the room name, average temperature and new temperature.

The script:

* has a configuration file where, for each rooms, are defined the room name, temperature sensor name, deltaT to trigger the alarm

* stores in a variable, json encoded, the list of average temperatures for each room

* when in one or more rooms  '''Temperature > Average_Temperature + deltaT => send notification by Telegram'''
* it works with both simple temperature sensors, and temperature+humidity(+barometric) sensors


Below the descriptions of the 4 files, that should be placed into Domoticz scripts/lua directory:

* script_time_fireAlarm.lua => lua script triggered every minute

* config_fireAlarm.lua => configuration file with rooms definition

* globalvariables.lua => another configuration file with telegram API information and something else

* globalfunctions.lua => some functions that are used from my scripts


For any suggestions, open an issue on [https://github.com/CreasolTech/domoticz_lua_scripts gitHub]

==Simple alarm script==
This script is a simple alarm.

This script has been taken from [http://domoticz.blogspot.fr/2014/04/un-exemple-de-script-lua.html here]

===Dependencies - hardware / software / operating system===
This script will work on all type of hardware / software / operating system.

===Domoticz Setup - switches, variables, version===
TBC

===Installation instructions===
Copy this script in your '''domoticz\scripts\lua\''' folder.

===Script with comments===
 local sensor  = 'Bedroom 1 - Motion'
 local sensor2 = 'Hall - Motion'
 local sensor3 = 'Living Room - Motion'
 
 local sensor_out = 'Presence Detected'
 local sensor_out2 = 'Security Panel'
 
 commandArray = {}
 
 function timedifference (s)
  year = string.sub(s, 1, 4)
  month = string.sub(s, 6, 7)
  day = string.sub(s, 9, 10)
  hour = string.sub(s, 12, 13)
  minutes = string.sub(s, 15, 16)
  seconds = string.sub(s, 18, 19)
  t1 = os.time()
  t2 = os.time{year=year, month=month, day=day, hour=hour, min=minutes, sec=seconds}
  difference = os.difftime (t1, t2)
  return difference
 end
 
 if ((devicechanged[sensor] == 'On') or (devicechanged[sensor2] == 'On') or (devicechanged[sensor3] == 'On')) then
 print('Presence from PIR') 
 commandArray[sensor_out]='On'
 
 --commandArray['SecPanel']='Arm Home'
 --else
 --commandArray['Security Panel']='Disarm'
  
 end
 
 
 --if(devicechanged[sensor_out] == 'On') then
 --commandArray[sensor_out2]='Arm Home'
 --end
 
 --commandArray['SecPanel']='Arm Home'
 --commandArray['SecPanel']='Disarm'
 --commandArray['SecPanel']='Arm Away'
 
 return commandArray

===Example of use (if relevant) i.e. output files / screen displays===
N/A

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[[Category:Setup]]
[[Category:Scripting]]
[[Category:Lua]]