JPH05151487A - Inspection of fire alarm - Google Patents

Abstract

PURPOSE:To provide a system which allows plural fire detectors to be inspected by one person. CONSTITUTION:Plural fire detectors 3 installed at different places and a central unit 1 connected to respective fire detectors with a cable 7 are provided to a fire detecting facility. It consists of a transmitting equipment 29 which transfers the decision result of the central unit 1 by radio, a pseudo facility generator 13 which offers pseudo facility condition to a fire detector, an inspection start instruction switch 15 which activates the pseudo fire generator 13 and an inspection unit 8 consisting of a receiving means which receives radio signal from the transmitting equipment 29. When one fire detector 3 is given pseudo fire condition, it detects the condition and transfers it to the central unit 1. The decision result of the central unit 1 is transferred by the transmitting equipment 29 as radio signal. The inspection unit 8 displays the decision result of the central unit 1 with a lamp 17 when it receives the radio signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system suitable for inspecting a fire alarm consisting of a fire detector installed on a ceiling or the like and a central device for centrally monitoring a signal coming from the fire detector.

[0002]

2. Description of the Related Art Normally, a person who monitors a central unit and a person who inspects a fire detector communicate with each other through a transceiver or the like to inspect whether or not the fire detectors scattered at respective positions normally operate. While inspecting the fire, each fire detector was inspected while exposing it to smoke and light.

[0003]

However, there is a problem that a total of two persons are required for the inspection, that is, a person who gives a false fire to the fire detector and a person who informs the judgment result in the central unit. is there. The present invention has been made in view of such a problem, and an object thereof is to provide a new fire alarm inspection method capable of inspecting a fire alarm as a system by one person. ..

[0004]

In order to solve such a problem, according to the present invention, a plurality of fire detecting means installed at different places and a signal transmitted by wire from each fire detecting means are received. A fire detection device comprising a central device for judging the occurrence of a fire, wherein a transmitter transmitting the judgment result of the central device by radio, and a pseudo fire generation device for giving a pseudo fire status to the fire detection device, and the pseudo fire occurrence. An inspection start instruction means for operating the means, a receiving means for receiving a radio signal from the transmitter, and an inspection device including a means for displaying the received result are provided.

[0005]

When a pseudo fire situation is given to one fire detecting means, the fire detecting means detects this situation and transmits it to the central unit. The result determined by the central unit is transmitted by the transmitter as a radio signal. The inspection device displays the determination result of the central device when it receives the wireless signal.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will now be described based on the illustrated embodiments. FIG. 1 shows an example of fire detection equipment to which the present invention is applied. In the figure, reference numeral 1 is a central control unit installed in a monitoring room 2 and is installed on a ceiling of a place where a fire should be monitored. For example, a plurality of fire detectors 3, 4, 5 for detecting fluctuations of flames as infrared fluctuations installed
6 and a cable 7. Reference numeral 8 is an inspection device characterized by the present invention. As shown in FIG. 2, an expandable rod 11 is provided on the main body case 10, and the periphery of the fire detectors 3, 4, 5, 6 is provided at the tip thereof. A cover 12 for covering is provided,
In this cover, means for simulating the same state as a fire, for example, an infrared lamp 13 is housed. Further, on the surface of the case, there is a keyboard 14 for specifying the number of the fire detector, and an inspection start command switch 1 for instructing the start of inspection.
5, inspection end command switch 16 for instructing the end of inspection,
As a result of the inspection result, a normality notification lamp 17 for notifying that the inspection result is normal, an abnormality notification lamp 18 for notifying that the inspection result is abnormal, and a display device 19 for displaying the time from the start of the inspection until the inspection result is wirelessly notified. An antenna 20 of the receiver, which is provided and is housed inside, is provided.

The central unit 1 comprises lamps 25, 25, 25 arranged on the surface of the case in correspondence with the numbers of the fire detectors.
An alarm 26 that informs the fire by sound and an alarm release switch 27 that stops the operation of the alarm in case of a false alarm.
A connector 28 for outputting the determination result to the outside is provided, and a transmitter 29 is connected to the connector 28.

FIG. 3 shows an embodiment of the central unit. In the figure, reference numeral 30 is a control unit constituted by a microcomputer, in which the respective fire detectors 3, 4,
The signal transmitted from the cable 5 through the cable 7, the signal from the alarm release switch 27, and the connector 2 described later.
When the transmitter 29 is connected to 8, the signal from the transmitter mounting detector 31 that operates is input, and the result of judging the signal from each of the fire detectors 3, 4, 5, ... In addition, the notification command signal is output to the notification device 26.

FIG. 4 shows an embodiment of the above-mentioned inspection device. In the figure, reference numeral 40 is a control device composed of a microcomputer for identifying the number of the fire detector. Signals from the keyboard 14, the inspection start command switch 15, the inspection end command switch 16 and the wireless receiver 41, respectively, and the infrared lamp 13 for generating a pseudo fire phenomenon, the lamps 17, 18 for notifying the inspection result, And display 1 for displaying the time measurement result
9 is configured to output a signal.

Next, the operation of the apparatus thus constructed will be described with reference to the flow charts shown in FIGS.

When one of the fire detectors 3, 4, 5, ... Detects the occurrence of a fire, the fire phenomenon detected by this detector, for example, the fluctuation of light, is converted into an electric signal and is detected by the cable 7 as a detection signal. It is transmitted to the central unit 1. Based on the level and duration of the detection signal, the central unit 1 determines whether or not a fire has occurred (step a), and if it determines that a fire has occurred, activates the alarm 26 (step a).
B). In this case, since the transmitter 29 is not attached (step C), if the result of the investigation shows that the alarm is false, the alarm cancel switch 27 is operated (step E) to stop the alarm (step E). ).

On the other hand, when inspecting the fire detector, a transmitter 29 is attached to the connector 28 of the central unit 1. This activates the transmitter mounting detector 31 to activate the control device 30.
The signal is input to.

In this state, the expansion tube 11 of the inspection device 8 is
Pull out until the tip reaches the fire alarm 3, and apply the cover 12 so as to cover the fire detector 3. When the number assigned to the fire detector 3, for example, "3" is input from the keyboard 14 (step H), and then the inspection start command switch 15 is turned ON (step S), the control device 40 turns the infrared lamp 13 on. The fire alarm 3 is activated to emit infrared rays, and at the same time, the timekeeping operation is started (step N). If the fire detector 3 is operating normally,
Time determined by the performance of the fire detector 3 and the performance of the transmission line (1
After 2 seconds), the central unit 1 receives a detection signal as described later, outputs the judgment result to the connector 28, and the transmitter 29 receives the input of this signal and the fire alarm 3 as the judgment result. No., in this case "3", is transmitted as a radio signal.

The receiver 41 of the inspection device 8 receives this radio signal and outputs it to the control device 40 (step). The number "3" entered is the number entered from the keyboard 14 "
If it is equal to 3 ", the control device 40 turns on the normal alarm lamp 17, stops the time counting operation, and turns off the infrared lamp 13 (step W).

When the normality notification lamp 17 is turned on, the number "
The 3 "fire detector 3 is found to be normal.

Further, the response speed can be known from the time data displayed on the display unit 19 and can be used as a guide for maintenance or the like.

On the other hand, when the inspection start command switch 15 is turned on (step) and a signal from the central unit 1 is not sent within a certain time, for example, 3 seconds, from the occurrence of the pseudo fire. (Step E), the abnormality notification lamp 18 is turned on, the timing operation is stopped, and the infrared lamp 13 is turned off (Step C).

On the other hand, as described above, the central unit 1 receives the detection signal from the fire detector 3 (step
B) When it is judged that there is a fire, the alarm 26 is activated (step B). At this time, since the transmitter 29 is installed (step C), the detection signal “3” is output from the transmitter 29 (step B). ) When a predetermined time, for example, 2 seconds has elapsed (step F), the alarm device is stopped to prevent noise (step).

By pressing the inspection end command switch 16 at the stage when the inspection of one fire detector is completed,
The inspection device is reset and ready for the next inspection.

As described above, according to the present invention,
In a fire detection device comprising a plurality of fire detection means installed at different locations and a central device that receives a signal transmitted by wire from each fire detection device to determine the occurrence of a fire, the determination result of the central device is wirelessly transmitted. And a pseudo fire generating means for giving a pseudo fire status to the fire detecting means, an inspection start command means for operating the pseudo fire generating means, and a receiving means for receiving a radio signal from the transmitter,
Since the inspection device including the means for displaying the received result is provided, the inspection result can be known on the inspection device side, and the fire alarm system in which the fire detector and the central device are separated from each other. Can be inspected by one person.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of the present invention.

FIG. 2 is a diagram showing an embodiment of an inspection device.

FIG. 3 is a block diagram showing an embodiment of a central device.

FIG. 4 is a block diagram showing an embodiment of an inspection device.

FIG. 5 is a flowchart showing the operation of the central device.

FIG. 6 is a flowchart showing the operation of the inspection device.

[Explanation of symbols]

 1 Central Control Unit 2 Monitoring Room 3, 4, 5, 6 Fire Detector 8 Inspection Device 10 Case 11 Rod 12 Cover 13 Infrared Lamp 14 Keyboard 15 Inspection Start Command Switch 16 Inspection End Command Switch 17, 18 Notification Lamp 19 Display Device 20 antenna 26 alarm 28 connector 29 transmitter 30 controller

Claims (1)

[Claims] 1. A fire detection device comprising a plurality of fire detection means installed at different locations and a central device for judging the occurrence of a fire by receiving a signal transmitted by a wire from each fire detection means. A transmitter for transmitting the judgment result by radio, a pseudo fire generating means for giving a pseudo fire condition to the fire detecting means, an inspection start command means for operating the pseudo fire generating means, and a radio signal from the transmitter. A fire alarm inspection method comprising a receiving means for receiving and an inspection device comprising means for displaying the received result.