Securing burglar bars against car jacks, cutting torch and angle grinder

[mentari <StephanusR@xxxxxxxxx>]

http://scratchpad.wikia.com/wiki/BurglarBars


=== Burglar bars square tubing assembly ===
http://scratchpad.wikia.com/wiki/BurglarBars -
Place 2cm square tubed on the inside of the house around the window
frame. Insert a Y12 concrete iron rod inside a square tube. Weld the
square tube to the outer perimeter tube. Any attempt at cutting
through the square tube results in the loose inner iron rod spinning
on its axis preventing any further penetration through the square
tube.

=== Car jack ===
Criminals use a car jack between the window frame and first iron rod
to jack the rod out of the frame.

=== Broad Square tubing on inside ===
Fit broad 10cm square tubing on inside of the wall next to the window
frame and secure by drilling through the wall with a handy bar. The
broad square tube is 10cm in width and 5cm in height. On the outside
the handy bar is secured against a base plate and welded to the wall.
Weld Y12 concrete rods to the broad square tubing on the inside of the
home.

This whole square tubing, Y12 rod assembly is monitored by a vibration
sensor [[ConfiguringAlarmSystem]] , strain gauge or resistance
measuring circuit.

Using a cutting torch or car jack will change the resistance of the
assembly. Monitor the resistance with a constant voltage, A/D
converter and [[AtmelMicro]]. Increasing the temperature of the
assembly will increase resistance changing the voltage. Forcing the
bars open with a car jack will also change the resistance altering the
voltage measured by the A/D converter and triggering an alarm.
Manually cutting any of the bars will generate a vibration measured by
a GE vibration sensor. The sensors should be placed inside the square
tubing during assembly of the Y12 structure. Sensor that are exposed
can be manually tampered with , by enclosing it the vibration sensor
will pick any attempt at getting to it.