Intruder detection and deterrent system

Claim 1

An intruder deterrence system for protecting enclosed premises, said system comprising: at least three sensors arranged to be placed incrementally along a path of probable ingress of a potential intruder into the protected premises; said sensors adapted to emit an electrical signal upon passage thereby by any person; latching means connected to the signal output of each said sensor and arranged to generate a signal and then latch-over upon receiving the first signal generated by said sensor, and further adapted to thereafter prevent additional signals from said sensor being passed through said latching means until said latching means is reset; an OR gate means having inputs operably connected to the signal outputs of all of said latching means, and a signal output; a first staged response circuit connected operably to the output of said OR gate means and having timing means therein including an adjustable timer with a signal input and a signal output, for generating after a predetermined period a first staged response signal in response to a signal received from said OR gate means; a second staged response circuit comprising a dual AND gate function having signal inputs operably connected to said OR gate and said first staged response signal, and having timing means therein arranged to generate a time delayed signal output in response to a signal input generated by said second staged circuit AND gate means; and, at least one additional staged response circuit comprising an AND gate means having signal inputs numerically coinciding with and operably connected to the staged response signals of all preceeding staged response circuits plus said OR gate means signal ouput, and said additional staged response circuits each having timing means arranged to generate a time-delayed output signal after receiving an input signal from said circuit's AND gate means; wherein said second and successive staged response output signals are further adapted to initiate noticeable responses in and around the protected premises in response to the possible intrusion.