DE3601600A1 - Fire-protection surveillance and alarm device for public assembly or presentation premises - Google Patents

Abstract

A fire-protection surveillance and alarm device for public assembly or presentation premises having at least one assembly hall which exhibits at least one entrance and a number of safety exits. The device has smoke detectors which are arranged in the entrance area and in the assembly hall and a number of sensors allocated to the doors of the safety exits, and a microprocessor-controlled electronic control and command unit. When predetermined hazardous states detected by the sensors and/or the smoke detectors are established, this unit activates alarm means, switches on all light fittings in the hall and automatically opens the doors of the safety exits by means of activating devices.

Description

ELEITROCXMJUITURE S.p.A., Via Montenapoleone 10, Milano, Italy

Fire protection - monitoring and alarm device for a public meeting or demonstration room

The invention relates to a fire protection - monitoring and alarm device for a public assembly or demonstration space.

In detail, the invention relates to a monitoring and alarm device for a room with at least one meeting room, the at least has an entrance and a number of safety exits, each of which contains a door with a quick opening of the door from the inside enabling actuators ("panic lock actuators") is provided, with a device essential for its intended use in the room or an equivalent essential facility is installed. Such a device or one Furnishings are, for example, in the case of a cinema hall by the projection device, in the case of a ballroom given by the amplifier device and, in the case of a theater, by the stage lighting.

If a fire breaks out in a public place, the room must be ordered as quickly as possible For this purpose, safety exits are provided, their nature

is regulated by special laws and regulations in different countries.

The doors of these security exits must usually remain closed during the demonstration to prevent unauthorized entry from outside. On the other hand, there must be doors can be opened from the inside by means of a simple push so that they can be opened if necessary enable the evacuation of the audience.

As experience has tragically shown, these measures are not enough to cause sadness To prevent accidents.

Π The object of the invention is therefore to provide a fire protection monitoring and to create alarm devices that quickly detect and display dangerous situations States and ensures that conditions are automatically established that allow to evacuate the space completely safely.

This object is achieved according to the invention by a device of the type mentioned above, which is characterized in that it has for each door:

- An electrical sensor which emits a signal when the actuating element is actuated;

- An electrical position sensor for the bolt of the locking device;

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- an electrical position sensor for the door;

- one by means of an electrical command signal

remotely disabled door retention means to maintain the door in the closed position;

- a door opening device to automatically open the door when the locking device and the door holding device has been rendered ineffective;

- first and second smoke alarms placed in the entrance and in the meeting room, respectively;

- display and alarm means, and

- A microprocessor-controlled electronic control and command unit, which is in connection with the first and second smoke alarms, with the electrical sensors, with the door holding device and the Door opening device of each door, with the electrical lighting system of the meeting room and with the Device or the corresponding facility,

and that the control and command unit is set up to carry out the following processes:

a) Enabling the start-up of the device or the corresponding Device only when the signals supplied by the sensors indicate that all Doors closed and the locking devices and the actuators of all doors rendered ineffective are;

b) Activating the alarm means if one of the smoke alarms arranged in the entrance indicates the occurrence of Emits smoke indicating signal and, in case of stopping this signal over a predetermined

Period of time, deactivation of the device or the corresponding device, switching on the Lighting system of the assembly hall and deactivation of the door holding devices around the to trigger automatic opening of the doors;

c) Activating the alarm means if one of the in Smoke alarms placed in the meeting room notify the occurrence of smoke; and

d) Deactivating the device or the corresponding device, switching on the lighting system of the assembly hall and deactivation of the door holding devices if at least two smoke alarms report the occurrence of smoke in the meeting room.

Further properties and advantages of the device according to the invention emerge with reference to the accompanying drawing from the following description of an exemplary embodiment.

In the drawing show:

Fig. 1 shows the plan of a movie theater in which a fire protection monitoring and Alarm device is installed, in a schematic representation;

FIG. 2 shows a door of a security exit of the presentation room of FIG. 1, in a side view;

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- • - • ro - ■ "" "

3 shows the arrangement according to FIG. 2, sectioned longitudinally the line III-III of Fig. 2, in a plan view,

Fig. 4 is a block diagram to illustrate an embodiment of the invention Establishment, and

Fig. 5, 6 7

Flow charts to illustrate the mode of operation of the device according to the invention.

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In Fig. 1, the plan of a movie theater is illustrated schematically, for example. The inventive monitoring and alarm system is applicable.

The movie theater illustrated by way of example has an entrance room A to which an inlet B Access and which is connected to the screening room C via passages D, which are covered with curtains or Partition walls are provided. In the projection room C is a projection booth E in which a projection device M is installed.

Opposite the demonstration booth E is a canvas and F installed, in front of the ordered rows of Sesse.l: i or seats G are arranged.

The screening room C has a number of safety exits, which are designated with U and with to the outside to opening doors H are provided.

As can be seen from FIGS. 2, 3, each door H is provided with a so-called panic lock handle L and one Locking device N provided, which has a pawl or bolt P, which or by hand is adjustable in the vertical direction and can engage in a seat E provided in the floor, in order to lock the door H in the closed state in this position. The locking device N is only accessible by hand from inside the screening room C. The bolt P of the door H

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A%

are in the lowered locking and locking position when the hall is not in use held.

A microswitch 1 is assigned to the panic lock handle L of each door H; when the handle is pressed is, the microswitch 1 is opened, while on the other hand the microswitch 1 at in the Has the rest position standing handle closed contacts. Above the bolt P each door carries H another microswitch 2; when the bolt P is in the raised unlocking position, the contacts of the microswitch 2 are closed, while on the other hand they are open when the The bolt is in the lowered locking position.

Each door H is also assigned a further microswitch 3, which acts as a position sensor for the door works: When the door is in the closed position, the contacts of this microswitch are closed.

Finally, each door H is assigned a spring device which strives to move the door leaf in to transfer the open position. In the embodiment shown in FIGS. 2, 3 each door is equipped with two torsion springs 4, which on the one hand against the door leaf and on the other hand are supported against a door frame.

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ψ, * ■ τ ~ # ft *

Each door H is also provided with a holding device 5, which serves to hold it in the To keep the closed position and ineffective remotely by means of an electrical control signal can be done. This holding device can be made smaller, for example by means of an electromagnet Power be formed, which is fed with direct current at low voltage and on the door exerts a closing force that is sufficient to overcome the effect of the spring opening device, e.g. a force of 500 N.

Smoke detectors 6 are installed in entrance A of the movie theater, which are connected to "strategic" Locations are arranged and which, for example, with an analysis of the "train" prevailing in the room work preventively. Such smoke alarms can be used in particular in the vicinity of the curtains only provided passages D be arranged. Experience and statistics show that that damaging fires almost always arise in connection with such passages.

Similar smoke alarms marked 7 are in the Demonstration room C installed.

The smoke alarms 6 and 7 are of a known type; they emit an electrical signal when they notice the appearance of smoke.

The monitoring and alarm system according to the invention, as shown in FIG. 4, has an electronic one

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Control and command unit, which is controlled by a microprocessor Z, to which the liikroschalter 1-3 and the electromagnets 5 of the doors H and the smoke alarms 6 and 7 are connected. The unit Z is also connected to the network circuit of the projection device M, the lighting system of the projection room C, an optical display panel or console T, an acoustic signaling device R, which is arranged next to the display panel T or is built into it, an acoustic signal generator V. and an optical alarm signal generator W, which is arranged outside the room (see also FIG. 1) and an alarm signal transmission device Y.

On the unit Z are also two switches X1 and X2 connected, which - as will be explained in detail - serve to improve the functionality the control and command unit C and thus the internal monitoring and alarm system Select.

In the embodiment shown schematically in FIG. 4, T is on each optical display panel a row of 9 optical signal transmitters (lamps or light-emitting diodes) for each door H of the safety outputs arranged, which are designated 11-19. The following applies in detail:

The signal transmitters 11 - 13 (for example each of green, red or yellow color) are the microswitch 3 assigned;

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the signal transmitters 14-16 (also these e.g. of green, red or yellow color) are the microswitch assigned and

the signal generators 17-19 (green, red and yellow) are assigned to the electromagnet 5 of the door.

On the optical display panel T there is a corresponding pair of signal transmitters for each smoke detector 6 (Lamps or light emitting diodes) 21, 22 are provided. A corresponding pair of signal transmitters is analogous 31, 32 available for each smoke detector 7.

The electronic control and command unit Z set up to be able to carry out essentially three different modes of operation: One mode of operation the state of readiness for each opening of the room before the start of the demonstration (or a other type of use for which the room in which the system is installed is intended), one Operating mode of standby mode during the course of the demonstration and finally a transfer to the operational status at the end of the Demonstration before closing the room.

Each time the room is opened before the start of the demonstration, the security doors H are unlocked, i.e. the bolts P are raised. The doors H remain under the effect of the permanently excited Electromagnet 5 closed.

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The first mode of operation given above is thereby effective that the unit Z is supplied with a corresponding signal by pressing the push button XI will. After receiving such an order, the unit Z examines the security doors assigned microswitches 1-3 supplied signals. When all doors H are closed stay, the panic lock operating lever are in their rest position and all latch P raised the unit Z agrees to the start of the demonstration, e.g. by switching off the power supply of the projection device. In addition, the transition to the second operating mode is carried out at the same time, monitoring and control during the course of the demonstration.

During the demonstration, unit Z periodically examines those from detectors 1, 2, 3 and 6, 7 supplied signals. Every time the detectors assigned to one of the security doors H 1-3 incoming signals have been examined, the unit Z makes the green signal generator 11 or the red signal transmitter 12 effective, depending on whether the door is closed or open. Accordingly, the signal generator 14 or the signal generator 15 is switched on, depending on whether the bolt P is raised or locked The same applies to the signal transmitter 17 or 18, depending on whether the electromagnet 5 assigned to the door is energized or de-energized. Whenever the signal transmitter assigned to a security door

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or 15 or 18 is switched on at the same time the acoustic signal generator R made effective.

If smoke occurs in entrance A and in the presentation room C, the unit Z makes the signaling device 21 and 31 (indicators for the occurrence of smoke) that are assigned to these smoke alarms are effective.

If, during the performance, a smoke alarm placed in entrance A, smoke appears reports, the unit Z makes the acoustic signal generator R effective; it also triggers the switch-on of the associated signal generator 22 (signal generator for the occurrence of smoke), as well as the extinction of the associated signal generator 21. If the signaling coming from this smoke detector 6 during is maintained for a predetermined period of time, e.g. over 30 seconds, the unit switches Z off the projection device M by interrupting the electrical power supply; it switches on the lighting system Q of the screening room C and interrupts the power supply to the Electromagnet 5 of the security doors H, which then are opened simultaneously and automatically under the action of the springs 4.

Instruct the interruption of the demonstration and the switching on of the lighting system in the auditorium the audience present in the hall about the occurrence of a dangerous situation. This notification is from

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fundamental importance: Experience has shown that any delay in the knowledge of the The gravity of a situation on the part of the audience can have tragic consequences. Such consequences can be limited or avoided with the system according to the invention: The interruption of the performance and turning on the lighting in the auditorium immediately indicates that something is abnormal or extraordinary has occurred. The simultaneous automatic opening of all doors of the security exits, as effected by the security system according to the invention, ensures that the audience can leave the room under the best security conditions, without hindrance and without occurrence from panic.

If, on the other hand, only one (single) smoke detector 7 in the screening room C reports the occurrence of smoke, the control and command unit Z makes the acoustic signal generator R. effective; it clears the signal generator 31 and switches the corresponding signal generator 32 on. The switched on The operating mode of the unit Z now initially remains in this state, with the following Waiting for development:

If the given alarm is triggered by, for example, a cigarette from a bystander who does not comply with the regulations originating smoke can be returned, the supervisory staff can thanks to the information on the display panel T localize the cause of the alarm and eliminate it; the optical and acoustic

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Alarm indication stops and the unit Z leads continue their normal monitoring cycle;

When the alarm is given as a result of a real outbreak of fire, it becomes the control and command unit Z immediately when another smoke detector 7 is in the vicinity of the smoke detector, the has given the first alarm, reports the occurrence of smoke, the operation of the demonstration device M interrupt, cause the lighting system Q of the projection room C to be switched on and de-energize the electromagnet 5 and thus the automatic opening of the doors of the safety outputs H trigger.

At the end of a demonstration, the unit Z is sent a command signal by pressing the push button X2, which is the third of the above Brings operating modes to effect.

The control and command unit Z examines those coming from the microswitches 2, 3 of the security doors H. Signals to ensure that these doors are closed and the latch P in the locking position are convicted. In addition, the unit Z switches off the demonstration device M and de-excites the Electromagnet 5.

If the door H has remained open at one of the safety outputs, or if the assigned bolt P is open is not in the locked position, the unit switches Z the optical signal generator 13 or 16 to report this condition. If, in addition, from any Reasons the electromagnet 5 of a door H im

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If the excited state remains, the unit Z switches on the corresponding optical signal transmitter 19.

During the time when the room is unused, the control and command unit Z continues to periodically check the data supplied by the smoke detectors 6, 7 Signals. As soon as one of these smoke alarms reports the occurrence of smoke, the unit Z switches the corresponding one optical signal transmitter on the display panel E on; it triggers the acoustic signal generator R and the acoustic signal generator V and the optical signal generator W arranged outside the room and, if necessary, controls the signal transmitter Y, which sends corresponding alarm signals, for example the Fire department, zule itet.

FIGS. 5, 7 illustrate schematically in the form of a flow chart the sequence of the courses of action the three modes of operation of the system described in detail above.

The surveillance and alarm system explained above has the advantage that it effects, among other things, effective burglary surveillance of the security doors. This surveillance is done by examining the microswitches 3 coming from the doors associated with these doors Signals; it does not require any additional elements or special changes to the structure of the system.

Further advantages of the system are the simplicity of its construction, its high level of reliability and safety.

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Of course, while maintaining the inventive concept, the embodiments and the details the practical realization of the idea compared to the description and only exemplary Drawing can be modified in a wide scope without departing from the scope of the invention.

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Claims (6)

Patent Attorneys Dr.-lng. R. Rüger Dipl.-Ing. H. P. Barthelt " reins. Representative at the European Patent Office European Patent Attorneys Webergasse 3 · Postfach 348 · D-7300 Esslingen (Neckar) January 20, 1986 Telephone Stuttgart (0711) 35 65 39 and 35 9619 PA 1 rÜal fax (0711) 35 99 Telex 7256 610 smru Telegram patent protection Esslingenneckar Claims Fire protection monitoring and alarm device for a public meeting or demonstration space with at least one meeting room, which is at least has an entrance and a number of safety exits, each of which contains a door, the with their quick opening from the inside enabling actuators and a locking device is provided with a hand-operated latch, with a for the intended purpose in the room Use of the premises essential equipment or an equivalent essential facility installed are, characterized in that it has for each door (H): - An electrical sensor (1) which emits a signal when the actuator (L) is actuated; - An electrical position sensor (2) for the bolt (P) of the locking device (N); - An electrical position sensor (3) for the door (H); - a door-holding device (5) which can be made ineffective remotely by means of an electrical command signal, to keep the door (H) in the closed position; - 2nd Accounts: Deutsche Bank AQ, Esslingen branch No. 304 014 (bank code 611 700 76) ■ Postscheck Stuttgart 624 51-700 (bank code 600 100 70) _ ο - * - a door opening device "(4) to the door (H) to open automatically when the locking device (N) and the door holding device (5) are rendered ineffective; - first and second smoke alarms (6,7) in the entrance (A) or are arranged in the assembly hall (C); - Display and alarm means (RCVW), and - a microprocessor-controlled electronic control and command unit Z, which is in communication with the first and second smoke alarms (6,7), with the electrical ones Sensors (1-3), with the door holding device (5) and the door opening device (4) each door (H), with the electrical lighting system (Q) of the meeting room and with the device or the corresponding facility (M), and that the control and command unit (Z) is set up to carry out the following processes: , a) Enabling the start-up of the device or the ent speaking device (M) only if the »The signals delivered to the sensors (1-3) indicate that all Doors (H) closed and the locking devices (N) and the actuators (L) of all doors (H) ineffective are made; b) Activating the alarm means (RT) when one of the smoke alarms (6) arranged in the entrance (A) activates the Occurrence of smoke indicating signal emits and in the event of stopping this signal over a predetermined Period of time inactivating the device or the corresponding device (M), switching on the Lighting system (K) of the meeting room (C) and disabling the door holding devices (5) in order to trigger the automatic opening of the doors (H); c) Activating the alarm means (R, T) if one of the in the assembly room (C) arranged smoke alarm (7) reports the occurrence of smoke; and d) Deactivating the device or the corresponding device (M), switching on the lighting system (Q) the assembly hall (C) and disabling the door holding devices (5) if at least two Smoke alarms (7) in the assembly room (C) report the occurrence of smoke. 2. Device according to claim 1, characterized in that it has manually operated selection means (X1, X2), through which the electronic control and command unit (Z) signals can be fed through which these is adjustable to a first or a second mode of operation and that the electronic control and command unit (Z) is set up to trigger the processes mentioned in its first mode of operation and in its second mode of operation to make the display and alarm means (R, T) effective if one or several interlocking devices (N) are disabled, one or more doors (H) of the safety exits (U) are open, one or more door holding devices (5) are activated or the device or the corresponding device (M) are in operation. 3. Device according to claim 2, characterized in that the electronic control and command unit (Z) is set up to operate the display and alarm means (T, R, V, W, Y) in its second mode of operation to do when one of the smoke alarms (6,7) reports the occurrence of smoke. 4. Device according to one of the preceding claims, characterized in that the display and alarm means for each door (H) at least one associated with the position sensor (2) of the locking device (N, P) optical signal transmitter (14 - 16) and at least one other, the position sensor (3) of the door (H) has associated optical signal transmitter (11-13) and that the control and command unit (Z) is set up to the optical signal transmitter in a predetermined Way depending on the signals supplied by the sensors (2,3). 5. Device according to one of the preceding claims, characterized in that the indicating and alarm means are for each of the first and second smoke alarms (6,7) each have at least one optical signal transmitter (21, 22; 31, 32) and that the control and Command unit (Z) is set up to this optical signal transmitter (21, 22; 31, 32) in a predetermined Way depending on the signals supplied by the smoke alarms (6,7). 6. Device according to one of the preceding claims, characterized in that the display and signaling means for each door (H) at least one of the Door holding device (5) have associated optical signal transmitter (17-19) and that the Control and command unit (Z) is set up to pre-determine each of these optical signal generators Way to be controlled depending on whether the door holding device (5) is in its effective or ineffective status.