JPH0413755Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to an interlocking control device that interlocks and controls fire doors, smoke evacuation devices, etc. using activation signals from a fire detector connected to a fire receiver. .

[Conventional technology]

Utility Model Application No. 111199/1983 is an interlocking control device equipped with a fire detector that is connected to a district line extending from a fire receiver and, when activated, controls nearby fire doors, smoke exhaust devices, etc. be. This conventional control device has a fire detector D as shown in FIG.
The light emitting/receiving element SP is connected in parallel with the operation indicator lamp La.
A photocoupler consisting of SB is connected to the sensor D, and the sensor D is configured to control a control circuit M for a fire door, a smoke evacuation device, etc., provided in the vicinity of the sensor D.

[Problem that the invention attempts to solve]

Conventional motion control devices like this require a power supply for control.
E ₂ must be provided separately from the power source E ₁ of the fire receiver Re, and since power is supplied from this power source E ₂ to each control circuit M via lines l ₁ and l ₂ , the number of lines increases,
Furthermore, the controlled equipment may be activated even during temporary operations such as malfunction of fire detector D, and
There were problems such as the inability to perform non-coupled switching in the receiver section.

[Means for solving problems]

In order to solve the above-mentioned problems, this invention includes a fire receiver that monitors fires, a pair of district lines extending from the fire receiver to the warning area, and a fire alarm connected between the pair of district lines. In an interlocking control device that controls controlled equipment such as a fire door and a smoke evacuation device in conjunction with the detection operation of the fire detector, the fire detector detects smoke, heat, etc. and a switch circuit that becomes conductive during a detection operation when the detection level is above a certain level, and a control circuit that is connected in series to the switch circuit and outputs a control signal for controlling the controlled device when a predetermined electric current is supplied. The receiver includes an impedance circuit inserted between the power supply and the district line, and set to a resistance value through which an operating current lower than the current at which the control circuit operates during the detection operation of the fire detector. , a storage circuit that outputs an output signal when the operating current of the fire detector is detected in the impedance circuit for a predetermined period or more; a normally open switch that closes based on the output signal of the storage circuit; An operating switch for switching between interlocking and non-interlocking control, and a resistor set to allow an electric current to flow through the normally open switch and the control circuit are connected in series, and the operating switch is connected in parallel to the impedance circuit. This is an interlock control device characterized by comprising a series circuit.

〔Example〕

Next, the invented device will be explained in detail using drawings showing one embodiment thereof.

FIG. 1 shows an embodiment of this invention, in which the receiver Re is equipped with a power source E and a district circuit RC, and this district circuit RC includes a series circuit of resistors R ₁ and R ₂ . One end of the impedance circuit is connected to the positive terminal of the power supply E, and the other end is connected to the district line _l1 . The base electrode of the transistor Tr ₁ is connected to the connection point between the resistors R ₁ and R ₂ , and the collector output thereof is applied to a storage circuit T consisting of a resistor R ₃ , a capacitor C, and a Zener diode Z.

The output of the storage circuit T is applied to the base electrode of the transistor _Tr2 , and the relay N connected to this collector electrode is controlled.

Furthermore, from the positive terminal of the power supply E, operate the operation switch SW.
A series circuit consisting of a normally open contact n of a relay N, and a resistor _R5 is connected to the district line _l1 . This series circuit is connected in parallel to the impedance circuit and acts as a bypass circuit. Also, normally open contact n
is a normally open switch that is closed by the output of the storage circuit T.

Fire detectors D ₁ to _{D o} are connected to district lines l ₁ and l ₂ extending from the receiver Re, and this fire detector D is
A control circuit DK is provided, which includes a sensor S that detects smoke, heat, etc., a transistor Tr ₃ as a switch circuit that is turned on by the sensor S, and a relay K connected in series with the transistor Tr ₃ . . Fire detector _D1 by this control circuit DK
Fire doors, smoke evacuation equipment, etc. located near the area are controlled,
A contact point _k1 with the relay K is provided for outputting a control signal to drive the controlled device.

The operation of the device of this invention having such a configuration will be described below.

When smoke, heat, etc. are detected by the sensor S, the transistor Tr ₃ becomes conductive, and this is transmitted as a fire signal to the receiver Re via the district lines l ₁ and l ₂ . It is assumed that the operating current based on the conduction of the transistor Tr ₃ is set in advance to a value equal to or lower than the current of the relay K of the control circuit DK by an impedance circuit consisting of resistors R ₁ and _R 2 .

The transistor is activated by the current flowing through the resistors R ₁ and R ₂ , the relay K, and the transistor Tr ₃ .
Tr ₁ is turned on, and the signal of this collector electrode is applied to the storage circuit T. If this signal is applied for more than a predetermined time, the preset time (several seconds to tens of seconds)
After that, the output of the storage circuit T causes the transistor
Tr ₂ becomes conductive and relay N is driven. At this time, if the switch SW is ON, that is, on the interlocking side, the resistance R ₁ ,
_R2 is closed by resistor _R5 , and the fire detector _D1 is additionally supplied with the bypassed current via resistor _R5 , and this current increase causes relay K to The controlled device is activated.

When a fire detector is activated by a temporary noise such as cigarette smoke, the signal is not permanent, so the signal applied to the storage circuit T is
disappears within the accumulation time of , and is not enough to activate relay N of district circuit RC. Therefore, even if the switch SW is on the interlocking side, the bypass circuit via the resistor _R5 is not established, so the relay K of the control circuit DK is not activated, and malfunction of the controlled equipment is prevented.

When performing an operation test by applying smoke or heat to a fire detector, leaving the switch SW open (non-interlocking) will prevent the controlled equipment from being driven unnecessarily.

Of course, the relay circuit used in this embodiment can be replaced with a semiconductor circuit.

[Effect of idea]

As described above, the device of this invention can drive the control circuit without installing a new power supply line to the fire detector that has the control circuit, and also prevents the controlled device from erroneously alarming the fire detector due to noise etc. It has features such as being able to easily select and control interlocking and non-interlocking at the fire receiver without having to drive the fire alarm.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of the interlock control device of this invention, and FIG. 2 is a circuit diagram of a conventional device. Re……fire receiver, D ₁ ~D _o ……fire detector,
RC ₁ ~ _{RC o} ...District circuit, T...Storage circuit, DK
...control circuit, _l1 , _l2 ...district line.

Claims (1)

[Scope of claim for utility model registration] Consisting of a fire receiver for monitoring fires, a pair of district lines extending from the fire receiver to a warning area, and a fire detector connected between the pair of district lines. , an interlocking control device that outputs a control signal to drive controlled equipment such as a fire door and a smoke evacuation device in conjunction with the detection operation of the fire detector, wherein the fire detector is configured to detect smoke, heat, etc. , comprising a switch circuit that becomes conductive during a detection operation when the detection level is above a certain level, and a control circuit that is connected in series with the switch circuit and outputs a control signal that drives the controlled device when a predetermined electric current is supplied. , The receiver includes an impedance circuit inserted between the power source and the district line, and set to a resistance value through which an operating current lower than the current at which the control circuit operates during the detection operation of the fire detector; A storage circuit that outputs an output signal when the operating current of the fire detector is detected in the impedance circuit for a predetermined time or more, a normally open switch that closes based on the output signal of the storage circuit, and interlocking of the controlled device. , an operating switch for switching non-interlocked control, and a bypass circuit in which the operating switch, the normally open switch, and a resistor set to allow an electric current to flow through the control circuit are connected in series, and the resistor is connected in parallel to the impedance circuit. An interlocking control device characterized by comprising a series circuit.