US 4,023,139 AGranted

Security control and alarm system

OwnerGene Samburginventor

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Abstract

A security control and alarm system includes a central station communicating with each of plural remote stations, or facilities, protected by the system. The remote stations may be multi-zone office buildings, shopping centers, or any of various specialized applications. The central station provides point-to-point monitoring of each protection sensor device at each remote station. Protection sensors of any desired type are encompassed by the system, including detectors for unauthorized entry, fire, smoke, mechanical equipment failure and the like. The central also provides remote control of various security functions including selective arming and disarming of the remote station, resetting of the alarm condition following an alarm activation, operating doors to permit access to authorized personnel, operating elevators to restricted, selected floors of a building, any of various other types of desired control functions. The system also may provide general remote control of non-security building functions. Communication between the central and remote is provided by an FSK-type multiplex mode of communication over standard voice grade telephone lines. Each person authorized to gain access to a remote, protected facility is provided a password. At the entrance of the facility, there is provided a telephone with a direct line connection to the central. An individual wishing to gain access must call and give the correct password to an operator at the central in response to which the operator issues a control to the remote facility for unlocking the entrance door. Elevator control is performed on the same basis. Parity check and general system test, in addition to various system operation monitoring and tamper detection means assure reliable operation of the system.

Claims19

Dependent claims

A security control and alarm system having a central station communicating with at least one station for receiving signals indicating security conditions, including alarm and access conditions, sensed at the remote station and for transmitting controls to the remote station wherein:

said remote station comprises:
a master control unit communicating with plural zones to be protected, each said zone including at least one sensor device and an access switch selectively settable to a desired one of secure and access positions and operative in the access position to shunt the sensor device, said master control unit including means responsive to arming and disarming controls from said central station to establish armed and disarmed states of said unit and being enabled in said armed state to respond to activation of said sensor device,
means connecting said sensor device of each said zone to said master control unit, said master control unit, when armed, being enabled to respond to activation of said sensor device of a given said zone for the secure position of said access switch to generate an alarm signal associated with the said zone, and
a multiplex-transmitter/receiver communicating with said master control unit, said multiplexer thereof including a multiplex point for each said zone for receiving an alarm signal for the corresponding zone and for transmitting each received zone alarm signal as a corresponding signal of a multiplex wave form to said central station, and said central station, and said central station comprises:
a multiplexer-transmitter/receiver for receiving the multiplex wave form transmissions from said remote station and for selectively transmitting a multiplex wave form to said remote station,
means for indicating an alarm condition for each zone for which a corresponding said alarm signal is present in the received multiplex wave form, and
means for selectively producing plural controls, including at least said arming and disarming controls, and supplying said controls as inputs to corresponding multiplex points of said central station multiplexer-transmitter for transmission as corresponding signals of the multiplex wave form to said remote station, and said remote station further comprises:
plural devices to be controlled, including at least said means of said master control unit responsive to said arming and disarming controls, said multiplexer-receiver of said remote station producing a control output corresponding to each control signal of the multiplex wave form received from said central station, and
means responsive to each said control output for controlling the respectively associated device to be controlled.

6 more elements

A security control and alarm system having a central station communicating with at least one remote station for receiving indications of security conditions, including alarm and access conditions, sensed at the remote station and for transmitting controls to the remote station, comprising

a master control unit at the remote station communicating with at least one zone to be protected, said zone including at least one sensor device, and an access switch selectively settable to a desired one of secure and access positions and operative in the access position to shunt the sensor device, said master control unit including means responsive to arming and disarming controls from said central station to establish armed and disarmed states of said unit and being enabled in said armed state to respond to activation of said sensor device,
means connecting said at least one sensor device of each said zone to said master control unit, said master control unit, when armed, being enabled to respond to activation of said at least one sensor device of a given said zone for the secure position of said access switch for generating an alarm signal associated with said zone,
transmitter means at said remote station communicating with said master control unit for receiving said alarm signal for said zone and transmitting a corresponding zone alarm signal to said central station,
means at said central station for selectively transmitting arming and disarming controls to said remote station for selectively arming and disarming said master control unit thereof,
means at said central station for receiving a zone alarm signal from said remote station, and for indicating the alarm condition of said zone, and
means at said central station for selectively transmitting a system test control signal to said remote station, said remote station including means responsive to a received system test control signal to apply a test signal corresponding to said alarm signal for said zone to said remote station transmitter for transmission to said control station receiving and indicating means.

3 more elements

A security control and alarm system having a central station for communicating with at least one remote station for receiving indications of security conditions sensed at the remote station and for transmitting controls to the remote station, comprising:

a master control unit at the remote station communicating with plural zones to be protected, each said zone including at least one sensor device,
means connecting said at least one sensor device of each said zone to said master control unit and said master control unit including a detecting relay associated with each said zone and connected in series energizing circuit with said at least one sensor device of each said zone and a tamper loop further connected in series therewith comprising first and second wires completing a series connection of said relay means and said sensor device to a power source, to normally maintain energization of said detecting relay, for each of said zones, either of activation of the sensor device and cutting of the tamper loop first and second wires of a given said zone opening said series circuit and deenergizing said detecting relay thereby to generate an alarm signal for the corresponding zone,
transmitter means at said remote station communicating with said master control unit for receiving alarm signals for the corresponding zones thereof and for transmitting the said corresponding zone allarm signals to said central station,
a cable for connecting said master control unit to said transmitter means to provide said communicating therebetween, said tamper loop including third and fourth wires in said cable whereby cutting of said cable cuts said third and fourth wires of said tamper loop and open circuits said energizing circuits for the detecting relays of all of said zones and produces zone alarm signals for all of said zones associated with said master control unit, and
said central station includes means for receiving each said zone alarm signal and indicating the alarm condition of said zone, for all of said zones associated with said master control unit.

2 more elements

Dependencies are inferred from the claim text.