Building Intruder AlarmThis invention relates to a pre-programmable clock timed, automatic, setting and un-setting (on and off) multi-detection building intruder alarm system.
Intruder alarms are well known electrical circuits which are brought in to action to secure an area with the intention of creating an alarm condition if an intruder enters into the field of a detection device or alarm circuit.
Alarm setting and un-setting is controlled by the key holder operating a key code pad or key switch, controlling alarm circuits, and setting an alarm final Exit circuit, Entry route, Time exit or Entry timer, bringing into operation the alarm detection circuit when the empty building is to be protected.
Time clock logging equipment is used to acquire alarm activation listing times or activated zone in a memory log. A number key pad and display is provided. Setting the alarm system at a required time can only be done manually by the key holder using the key pad or key switch with the final exit procedure.
Final alarm setting procedures are inconvenient and cumbersome, resulting in irregular alarm usage and a lack of coverage to the premises. Automatic setting and un-setting alarms would be more convenient and desirable especially in domestic circumstances where entry/exit times (going to work in the mornings) are standard. Convenient automatic alarm morning off times, for alarms automatically setting at night, and night coverage alarms automatically set at say at 12,o'clock p.m.
These may be backed up by the use of panic button alarms.
Intruder alarm detectors now-a-days, like passive infrareds, are extremely reliable and can not be left open like a door can where a system fault or failiure would occur if an intruder alarm was to set with one open. And control units can detect and deactivate or cut out unserviceable circuits, although these may not necessarily be hard wired; and intruder alarms may use radio transmitting detectors and radio control equipment.
Detection devices may have some sort of access circuitry, or built in warning device (self contained) but these do not usually operate external alarms. Control unit circuitry may re-arm and re-activate circuits. Also external bell duration times have been limited to 20 minutes maximum operation, resulting in eventual higher alarm coverage. Autosetting alarms have not been desirable with multi wired installations as complicated setting procedures do not allow for this.
According to the present invention there is provided a preprogramable, clock timed, automatic setting and un-setting (on and off), multi detection building intruder alarm, comprising: an intruder alarm; control circuitry and detection devices with a pre-programmable automatic 24 hour, 7 day, clock timer; time base; operating key pad; timer display; display buffer; timer access control circuit; timer output operating circuit; timer operated time delay circuit; alarm system operating relays; setting warning alarm ; auto-setting recognition circuit; set/unset radio transmitter; external bell and telephone dialler/digital communicator delay circuit; auxiliary relay; and alarm system key switch.
Means for reasonably controlling key holder clock timer access is made, and clock timer circuit operating access to an intruder alarm via operating relays is made using electronic timers and logic circuits.
Being adapted to control an intruder alarm system's setting and un-setting (on and off) functions operating automatically by day and night by 24 hour, 7 day clock timer, making all the necessary connections to an intruder alarm system controlling: key switch, entry/exit route, final exit, entry/exit time delays, alarm key pad, and control unit operations necessary to work.
A specific embodiment of the invention will now be described by way of example, with reference to the accompanying drawing in which :Figure 1, shows in schematic form a multi detection intruder alarm, key pad, key switch, detection device, control unit, control operating circuitry, radio receiver, control outputs, and the Intruder alarm operating with detection devices, eg passive infrared detector, door contact, window contact, ultra-sonic, microwave, pressure mat, vibration detection or volumematic device.
Figure 2, shows in schematic form a pre-programmable automatic clock timer and associated circuits.
Figure 3, shows in schematic form a pre-programmable automatic clock timer making operating connection to a multi detection intruder alarm to operate setting and un-setting, (on and off) procedures and controlling the alarm systems outputs to a telephone communicator/dialler and external alarm bell.
Referring to the drawing an intruder alarm in the form of: an intruder detector 1; control unit 2; final set circuit 3; entry/exit circuit 4; control unit entry/exit timer 5; key switch 6; code entry key pad 7; alarm outputs 8; and alarm radio detection receiver 26; being adapted to operate automatically by pre-programmable 12 hr, 7 day clock timer such as a TMS 1601a Integrated circuit 9, to set, switch on or off automatically by engaging and disengaging an alarm normally open, normally closed multi way operating alarm control relay 10; and unset or alarm off operating, normally open, normally closed, multi way relay 11; activated by the clock timer out put stage 12; pre set by the programming key pad 13; allowing a key holder access to the timer functions when operated by the security timer code access control circuitry 14;AM706B1 integrated circuit is fitted for clock timer timing control as a time base 16; display buffer 29.
Programming of the clock timer can be made by use of the key pad 13; and display 15; by the key holder for pre set timing command loading.
An adjustable timer operating time delay is used 17; connected to a timer auto-set, setting warning alarm 18; and system set warning alarm relay 19; using the auto set recognition circuit 20.
To detect if the clock timer has set the alarm, connections may be made to an external bell and or telephone dialler/ communicator via an adjustable time delay circuit 21; allowing an adjustable time delay before operation to be enforced on the bell and telephone dialler/communicator when the clock timer has set the intruder alarm using an auxiliary relay 22.
An on/off, set/unset radio transmitter code channel circuit 23, provides operating instructions to a security code circuit 24; providing access to a radio transmitter 25; that can be operated by the clock timer for remote operation of auxiliary equipment using option switches 26, 27 and 28.
Delay timers may impose a time delay of up to 15 minutes and are fitted to allow pre-warning of alarm about to set operations or delays to operate in alarm devices before main alarm set is activated, or alarm action taken, allowing internal alarm warning devices 27, to operate first, guaranteeing that the key holder is out of the premises, supplying a three stage type warning: About to set; Internal alarms only; Delayed dialler and telephone alarms with external bells.