Car-directing apparatus for an alarm system

Claim 1

A car-directing apparatus incorporated into an alarm system which includes emergency sensors for sensing an emergency and/or abnormality occurring in a predetermined protected area, a security-ensuring apparatus arranged in the predetermined protected area and capable of transmitting an emergency-information signal in the form of a modulated coded signal, and a dispatch car in which dispatched engineers are transported to the predetermined protected area when an emergency and/or abnormality occurs, comprising: a signal-receiving circuit for receiving said emergency-information signal transmitted from said security-ensuring apparatus and a confirmation signal in the form of a radio transmission signal transmitted by said dispatched engineers; a demodulating circuit connected to said signal-receiving circuit and demodulating said emergency-information signal and said confirmation signal into a coded emergency- information signal and a coded confirmation signal, respectively; a memory unit arranged so as to store therein predetermined codes, including at least type-of-emergency discriminating codes and a confirmation signal code; a discriminating unit arranged so as to be connected to said demodulating circuit and said memory unit and discriminating whether said emergency-information signal or said confirmation signal is input thereinto upon the receipt of each signal from said demodulating circuit, said discriminating unit issuing a signal on the basis of the discrimination thereof; a first emergency-discriminating circuit connected to said discriminating unit so as to respond to said emergency-information signal transmitted from said security-ensuring apparatus; a second emergency-discriminating circuit connected to said discriminating unit so as to respond to said confirmation signal transmitted by said dispatched engineers; a car-directing signal-generating unit for generating a signal to direct said dispatched engineers in said dispatch car to said predetermined protected area when said first emergency-discriminating circuit responds to said emergency-information signal; an AND gate circuit having input terminals connected to said first and second emergency-discriminating circuits, said AND gate circuit issuing an output signal upon the receipt of signals from both said first and second emergency-discriminating circuits; a priority circuit arranged so as to be connected to said AND gate circuit for generating a prior emergency signal upon the receipt of said output signal from said AND gate circuit; a display unit connected to said first emergency-discriminating circuit for displaying an emergency-information signal in response to a signal from said first emergency-discriminating circuit; a signal-modulating circuit for modulating said prior emergency signal from said priority circuit; a signal-emitting circuit for emitting said modulated prior emergency signal from said signal-modulating circuit; and a built-in electric power unit for electrically powering said aforementioned circuits and units of said car-directing apparatus, said electric power unit comprising a battery means.