Method and device for supervising and giving a progressive alarm in response to detected intensity

• US 4,568,920 A
• Filed: 07/07/1982
• Issued: 02/04/1986
• Est. Priority Date: 07/10/1981
• Status: Expired due to Fees

• Current Assignee: ICB France Industrie et Componsants Du Batiment Societe Anonyme
• Original Assignee: ICB France Industrie et Componsants Du Batiment Societe Anonyme
• Inventors: Mombelli, Paul
• Primary Examiner(s): Rowland, James L.
• Assistant Examiner(s): Tumm, Brian R.
• Application Number:
  US06/396,094
• Time in Patent Office: 1,308 Days
• Field of Search: 340/585, 340/566, 340/65, 340/511, 340/537, 340/545, 340/547, 340/665, 340/683
• US Class Current: 340/566
• CPC Class Codes: G08B 13/00 Burglar, theft or intruder alarms

Abstract

The method and device employs detectors which are connected to electronic analyzers which, in accordance with the level of detection, actuate the corresponding level of alarm and the level of dissuasion by choosing the suitable timing and the suitable power circuit. The alarm is progressive and dissuasive so as to inform a provoker on the spot, in the region of the openings to be protected, that the system has detectors connected to an alarm center which is capable of analyzing the items of information coming from the detector or detectors and immediately actuating a specific and understandable alarm. The method and device are applicable to the supervision and protection of premises.

Claims

1. In a supervising and alarm device comprising a means for detecting vibrations undergone by closing means of exits or openings of premises to be supervised, a means for assigning to said vibrations at least two levels respectively corresponding to at least two intensities of vibrations and a means for producing a general alarm signal in response to the highest intensity of vibrations;

the improvement comprising a means for producing a warning and dissuasion signal for a predetermined period of time in response to vibrations corresponding at least to the lowest level of intensity, said signal being intended for the person who had caused said vibrations and produced at the exit or opening location where said vibrations have been produced;

wherein said means for detecting vibrations are detectors which are operative under the action in inertia and are each associated with the respective closing means of an exit or opening, said means assigning levels to the vibrations comprising analyzers, each of which analyzers is connected to a respective one of said detectors;

said device further comprising;

timing circuits which are respectively connected to said analyzers for determining the period during which said general alarm signal and/or warning and dissuasion signals are produced as a function of the level of the detected vibrations; and

wherein exits or openings to be supervised are provided with said detectors which are operative under the action of inertia and are combined with magnetic contacts in such manner that wire loops which interconnect them are permanently closed when its corresponding exit or opening is closed and are intermittently opened when its corresponding exit or opening is subjected to vibrations or are permanently opened when the exit or opening is opened, each loop comprising a filtering circuit for passing information signals which correspond to mechanical vibrations detected by the detector and for eliminating noise signals of an electromagnetic or electric origin induced on said wire loop, said filtering circuits including shaping circuits for shaping said passed signals; and

wherein each shaping circuit is connected to a memory means for storing an information signal coming from the corresponding detector, said memory means including means for cyclically resetting themselves so as to solely store said information signal corresponding to the signals which are being processed in the analyzers, said memory means also authorizing the corresponding means for producing a warning and dissuasion signal.

2. A device according to claim 1, further comprising power circuits through which said timing circuits for determining the period during which said warning and dissuasion signals are produced are connected to the corresponding means for producing said warning and dissuasion signal;

said timing circuits having outputs connected in parallel to corresponding inputs of said power circuits, which power circuits further comprise authorization inputs respectively connected to outputs of said memory means.

3. A device according to claim 2, wherein the timing circuit connected to the analyzer of signals corresponding to the lowest level of vibrations is connected in parallel to inputs of the power circuits adapted to bring into action one half of the power of said power circuits.

4. A device according to claim 3, wherein a medium sensitivity channel comprising the analyzer of signals corresponding to the medium level of vibrations and its corresponding timing circuit, acts on the power circuits simultaneously at an input bringing into action the full power of said power circuits.

5. A device according to claim 2, wherein a medium sensitivity channel comprising the analyzer of signals corresponding to the medium level of vibrations and the corresponding timing circuit, acts on the power circuits simultaneously at an input bringing into action the full power of said power circuits.

6. A device according to claim 1, wherein upon a simultaneous agression on a plurality of exits or openings, each corresponding dissuasion means is actuated by the highest level of vibrations detected by its means for detection.

7. A device according to claim 1, wherein there are three of said levels of vibrations, and the analyzers are three in number, a first analyzer being very sensitive, a second analyzer being of medium sensitivity and a third analyzer being of low sensitivity and arranged so as to require signals of long duration in order to operate.

8. A device according to claim 1, wherein the actuation of the analyzer of signals corresponding to the highest level of vibrations cause by a veritable intrusion, causes the actuation through its corresponding timing circuit of an associated power circuit of said general alarm signal producing means.