JPH04182798A - System and method for fire monitoring control - Google Patents

Abstract

PURPOSE:To accurately perform the inspection or the like of fire generation by starting a video recording operation when the analog level of a transmitted data signal reaches the preliminary level. CONSTITUTION:When the level of the analog data signal sent from a fire sensor 4 exceeds an alarm level which is the judge reference of the fire generation, a fire signal ALM is outputted to a judge processing part 18 of a central processing part 10 to perform the control of a disaster prevention equipment or the like. A preliminary signal PRE is outputted at the time of exceeding the preliminary level even when the level of the analog data signal does not exceed the alarm level. When the preliminary signal PRE is outputted from the decision processing part 18, a recording control part 16 outputs a control signal CTL against a video recording part 15 and starts the recording operation of the video recording part 15. Thus, the abnormal state not leading to the generation of a fire is reproducibly recorded, and the information effective for analyzing the cause of the generation of a fire can be obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a fire monitoring and control system and a fire monitoring and control method that perform fire monitoring and control based on information from fire detectors and sensors that detect temperature, smoke, etc. Regarding.

[Conventional technology]

Conventionally, as a system that can reproduce and display fire outbreak situations,
For example, a system as disclosed in Japanese Patent Laid-Open No. 63-208189 is known.

FIG. 7 is a diagram showing an example of the configuration of this type of conventional system. In this system, when a detection signal from a fire detector 50 is sent to a central monitoring and control device 52 via a transmission line 51, the main CPU 53 decodes this detection signal in the central monitoring and control device 52, and as a result, If this is determined to be an abnormal signal, the main CPU 53 outputs a fire data signal necessary for displaying a fire, and provides this to the CRT CPU 55 via the interface 54.

When the CRT CPU'55 receives the fire data signal from the main CPU 53, it can send video data to the CR7 display device 56 to display the degree of fire occurrence on the CRT screen.

At this time, in the system shown in FIG.
and a switching means 58 for controlling data writing and reading between the CRT CPU 55 and the monitor memory 59.
is further provided, so that when a fire occurs, the CR7 display device 5 displays the situation of the fire as described above.
At the same time, the switching means 58 is switched by operation from the monitor operation section 57 equipped with operation switches, etc., and the CR-
It becomes possible to write the data signal sent to the T CPU 55 into the monitor memory 59.

In this way, once the data signal at the time of fire outbreak is stored in the monitor memory 59, the monitor memory 5
By reading the data signals stored in the CRT 9 and sending them to the CRT CPU 55 as necessary when extinguishing a fire, the CRT
It is possible to reproduce and display the fire outbreak situation on the R7 display device 56, thereby providing effective information when elucidating the cause of the fire occurrence.

[Problem to be solved by the invention]

However, in the conventional system as described above, data signals from the time when a fire actually occurred are stored and recorded in the monitor memory 59, so the situation before the fire is not recorded. First, there was a problem that it was only possible to reproduce and display this. For this reason, even if a fire actually occurs, it is not possible to verify the occurrence of a fire more accurately, and it is difficult to take countermeasures against abnormal situations that may not lead to the occurrence of a fire. It had some drawbacks, such as being difficult to do.

The present invention can reproducibly record the situation before a fire actually occurs and abnormal situations that do not lead to the occurrence of a fire, and furthermore, can perform this recording reliably and reliably. The purpose of this invention is to provide a fire monitoring and control system and a fire monitoring and control method that can be used to monitor and control fires.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a level determining means for determining the analog level of a transmitted data signal, and a method for reproducibly recording the transmitted data signal or data obtained by performing a predetermined conversion on the transmitted data signal. a video recording means for
When the level determining means outputs an instruction indicating that the analog level of the data signal has reached a preliminary level that is set by a predetermined value lower than the alarm level serving as a criterion for determining the occurrence of a fire, the video recording means is activated. The apparatus is characterized in that it is equipped with a recording control means that activates and starts a video recording operation.

In addition, when the analog level of the data signal exceeds the preliminary level but does not ultimately reach the alarm level, the recording control means controls the recording control means to record the video while the analog level of the data signal exceeds the preliminary level. If the analog level of the data signal exceeds the preliminary level and then reaches the alarm level, during the period from when the analog level exceeds the preliminary level until manual operation is restored. , the video recording means is controlled to perform a video recording operation.

Furthermore, an audio recording device may be further provided which operates simultaneously with the video recording device and records predetermined audio in a playable manner under the control of the recording control device.

[Effect]

In the present invention, even if the analog level of the transmitted data signal does not reach the alarm level, when the analog level reaches the preliminary level, the video recording operation is automatically started, thereby raising the analog level from the preliminary level. It is possible to record a video of the situation before the alarm level so that it can be played back without requiring any operation by an operator.

In addition, if the analog level of the data signal exceeds the preliminary level but does not ultimately reach the alarm level, video recording operation is automatically performed while the analog level exceeds the preliminary level. Fully automatic recording of images is done. Further, when the analog level reaches the alarm level, the video recording operation can be stopped by manual operation.

Furthermore, by providing an audio recording means and operating it simultaneously with the video recording means, predetermined audio can be recorded in a reproducible manner in synchronization with the video recording.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a block diagram of an embodiment of a fire monitoring and control system according to the present invention. Referring to FIG. 1, the fire monitoring and control system of this embodiment includes a central monitoring and controlling device 1 that performs centralized monitoring and control, and fire detectors connected to the central monitoring and controlling device 1 via transmission lines 2 and 3, respectively. 4. It has a terminal device 5.

The terminal equipment 5 is, for example, disaster prevention equipment such as a fire alarm, a smoke prevention damper, and a fire door, and the fire detector 4 and the terminal equipment 5 are installed in each monitoring area.

The central monitoring and control device fl is installed, for example, in a disaster prevention center, and based on analog data signals from the fire detector 4, fire alarms, smoke prevention dampers, fire prevention doors, and other disaster prevention devices, that is, terminal devices 5 is designed to be controlled.

FIG. 2 is a diagram showing an example of the configuration of the central monitoring and control device 1,
Referring to FIG. 2, the central monitoring and control device 1 includes a central processing unit 10 that performs overall processing control, a transmission unit 11 that performs data transmission between the fire detector 4 and the central processing unit 10, and a terminal. A transmission unit 12 that transmits data between the device 5 and the central processing unit 10, an operating unit 13 that provides predetermined instructions to the central processing unit 10, and an analog data signal from the fire detector 4. A display unit 14 such as a CRT display on which a predetermined video based on the data is displayed on the screen; a video recording unit 15 that reproducibly records video based on the analog data signal from the fire detector 4; The recording control section 16 performs recording control.

The central processing unit 10 is particularly provided with a video conversion unit 17, a judgment processing unit 18, and an alarm control unit 19. At times, a predetermined video is generated based on this analog data signal and provided to the display section 14, and when the video recording section 15 is being driven, the generated video is provided to the video recording section 15. ing.

The video recording unit 15 may be, for example, a video tape recorder, or may be a memory such as a hard disk (HD), a compact disc (CD), or a RAM. A video recorder is used as the video recording unit 15. In this case, the video converter 17 can be configured as shown in FIG. That is, in the example of FIG.
RT controller) R (red), G (green), B from 20
(Blue) color signal C8 is directly supplied to the display unit 14, while the RlG and B color signals C8 from the display controller 20 are converted into video signals by the signal converter 21, and the video recording unit 15 functions as a video tape recorder. can be given to

Further, when a memory such as a compact disk is used as the video recording section 15, the video converting section 17 can be configured as shown in FIG. That is, the fourth
In the illustrated example, the video converter 17 provides the image signal PS to the display unit 14 via the display controller 20, and
The image signal PS or the data signal DS before being converted into an image signal can be provided to the memory 15.

Although not shown, the video converter 17 is provided with a clock,
The display unit 14 displays the time from the clock together with video and data signals.
．． The signal may be supplied to the video recording section 15 to cause the display section 14 to display the time together with the video, or to cause the video recording section 15 to record the time together with the video and data signals.

Further, the judgment processing unit 18 of the central processing unit 10 detects the level of the analog data signal from the fire detector 4, outputs a preliminary signal PRE when the detected level exceeds the preliminary level, and also outputs a preliminary signal PRE when the detected level exceeds the preliminary level. A fire signal ALM is output when the level exceeds the alarm level. Note that the preliminary level is set in advance to be a predetermined value lower than the alarm level, which is the criterion for determining the occurrence of a fire.
The preliminary signal PRE is generated when the analog data signal is at a level between the preliminary level and the alarm level, that is, when it is determined that some abnormality that does not lead to the occurrence of a fire but has the possibility of causing a fire has occurred. It is now output to . On the other hand, the fire signal ALM is output when it is determined that a fire has actually occurred.

Further, the alarm control section 19 is configured to control the fire alarm based on the judgment result of the judgment processing section 18.

Further, the recording control unit 16 determines that when the level of the analog data signal exceeds the preliminary level, the determination processing unit 18 of the central processing unit 10
The control signal CTL is applied to the video recording unit 15 from the time when the pre-III signal PRE begins to be outputted, and the video recording unit 15 is operated from this point on.

Note that the control signal CTL sent from the recording control unit 16 to the video recording unit 15 exceeds the preliminary level when the level of the analog data signal exceeds the preliminary level but does not ultimately reach the alarm level. It is output only during the period (that is, while the preliminary signal PRE is being output), and when the level of the analog data signal exceeds the preliminary level and then further exceeds the fire level and a fire alarm is issued, the preliminary level It is designed to be output from the time when the error is exceeded until recovery is performed by manual operation.

In addition, in this embodiment, the central monitoring and control device 1 includes a voice recording unit 30 that reproducibly records the voices of conversations within the disaster prevention center, conversations on emergency telephones, and command conversations issued to each monitoring area.
If the audio recording section 30 is further provided in the central monitoring and control unit Wl, the audio recording section 30 can be controlled by the recording control section 16 in the same way as the video recording section 15. It is operated by the signal CTL and records audio in synchronization with the video recording operation.

Next, the fire monitoring control operation in such a configuration will be explained. When called by the central supervisory control device 1, the fire detector 4 sends back to the central supervisory control device 1 an analog data signal regarding detected phenomena such as heat and smoke. When an analog data signal is sent from the fire detector 4, in the central monitoring and control device 1, the determination processing unit 18 of the central processing unit 10 analyzes the level of this analog data signal to determine whether a fire has occurred. When making a decision,
5. Terminal equipment in the monitoring area where the fire detector 4 that issued the fire alarm and sent its analog data signal is installed. In other words, it controls disaster prevention equipment such as smoke dampers and fire doors where necessary.

At this time, based on the analog data signal sent from the fire detector 4, the video converter 17 of the central processor 10
Then, an image is generated and displayed on the display unit 14, so the operator in the disaster prevention center can view the image on the display unit 14.
By viewing the video displayed on the screen, you can learn about the situation of a fire outbreak and the operating status of disaster prevention equipment. Further, if a clock is provided in the video converting section 17 and the time is displayed on the display section 14 along with the video, the operator can accurately know the passage of time and the like.

By the way, in the judgment processing section 18 of the central processing section 10, when the level of the analog data signal sent from the fire detector 4 exceeds the alarm level which is the criterion for determining the occurrence of a fire, the judgment processing section 18 outputs the fire signal ALM and performs the above-mentioned process. However, even if the level of the analog data signal does not exceed the alarm level, if it exceeds the preliminary level, the preliminary signal PR
Outputs E. When the preliminary signal PRE is output from the determination processing section 18, the recording control section 16 outputs a control signal CTL to the video recording section 15, and causes the video recording section 15 to start recording operation.

FIG. 5(a) shows a case where the level L of the analog data signal exceeds the preliminary level L1 but ultimately does not reach the alarm level L2. In this case, the recording control section 16 As shown in FIG. 5(b), the time point ti (
During the period from t3) to time t2 (or t4) when the level L becomes lower than the preliminary level 1, the control W signal CT
Output L. Thereby, the video recording unit 15 can automatically record the video from time t1 (or t3) when the reserve level exceeds L1 to time t2 (or t4) when the reserve level becomes 1 or lower.

Further, FIG. 6(a) shows a case where the level L of the analog data signal exceeds the preliminary level L1 and then further exceeds the alarm level L2. In this case, the recording control section 16 , as shown in FIG. 6(b), the time t when the level L of the analog data signal exceeds the preliminary level L
5 to the time t6 when manual operation is restored, the control signal CTL
Output.

As a result, the video recording unit 15 can record video from the time t when the preliminary level L is exceeded to the recovery special 0.

In this way, in this embodiment, even if the level L of the analog data signal does not exceed the alarm level L2, the preliminary level L
Since images are recorded when the temperature exceeds 1, as shown in Figure 5 fa) and +b), it is possible to record even abnormal situations that do not lead to the occurrence of a fire. In addition, as shown in Figures 6(a) and (b), the situation before the actual occurrence of a fire, that is, the situation from time t5 when the preliminary level L1 is exceeded to time t7 when the alarm level reaches L2, is shown. It is also possible to record. This not only records the fire situation, but also records the occurrence of false alarms.

Records for maintenance inspection, training, etc. can be made.

Note that when the video recording section 15 is a video tape recorder, for example, and the video converting section 17 is configured as shown in FIG. After a predetermined video is recorded on the videotape 140, an operator of the disaster prevention center or the like can record this videotape 40 in the central monitoring and control device 1 or at a central location at any time. It is possible to set the image reproducing device 3f41 separate from the monitoring control device 1 and reproduce and display continuous images on the display device 42.

Furthermore, the video resulting from conversion by the video converter 17 may not be recorded in the video recording unit 15.

For example, when the video recording section 15 is a memory such as a compact disk and the video converting section 17 is configured as shown in FIG. Alternatively, only when there is a state change in the analog data signal (judgment result, control command), data on this state change is recorded in the memory 15 together with the time, and then at any time. The data recorded in the memory 15 is read out and converted into an image signal by the video converter 17, for example, and then
It can also be reproduced and displayed on the display section 14 via the display controller 20.

When video is played back and displayed in this way, the video that is played back and displayed includes video under conditions of alarm level 2 or lower, as described above, so this allows the operator to verify the occurrence of a fire. This can be done accurately and accurately, making it easier to take measures to improve equipment and counter false alarms. Furthermore, if a clock is provided in the video converter 17, the time can also be recorded in the video recording unit 15 together with the video or data signal, and when this is played back and displayed, the time at the time of recording is recorded along with the video. is also displayed. In this case, the user can accurately grasp the time course of the situation, etc., and it becomes easier to take countermeasures more accurately.

Furthermore, in this embodiment, when the level L of the analog data signal reaches the preliminary level L1, the recording operation is automatically started without the operator having to operate a switch or the like on the operation unit 13. It is possible to effectively prevent a situation in which recording is not performed due to an operational error or the like, and it is possible to record the desired video reliably and with high reliability. Furthermore, even if the level L of the analog data signal exceeds the preliminary level L1, if it does not ultimately exceed the alarm level L2, the recording operation will automatically stop when the preliminary level becomes 1 or less. In some cases, completely automatic recording is possible without relying on the operator, and when the analog data signal level L exceeds the alarm level L2, the operator can
The recording operation can be stopped simply by operating the predetermined switch No. 3 or the like.

Furthermore, when the central monitoring and control device 1 is provided with the audio recording section 30, the recording control section 16 outputs a control signal CTL as shown in FIG. 5(b) or FIG. 6(b). During the period, the audio recording unit 30 is operated, and at the same time as the video recording unit 15 records video, the audio recording unit 30 records the audio of conversations inside the disaster prevention center, conversations on emergency telephones, and command conversations issued to each monitoring area. Can be recorded and played back later. This allows for even more accurate verification and countermeasures.

In addition, in the above-mentioned embodiment, it was explained that only the fire detector 4 is provided in each monitoring area as a device for transmitting an analog data signal, but in addition to the fire detector 4, various other sensors may also be provided. It's okay to be left behind.

〔Effect of the invention〕

As explained above, according to the present invention, even if the analog level of the transmitted data signal does not reach the alarm level, the video recording operation is started when it reaches the preliminary level. Therefore, it is possible to replayably record the situation before a fire actually occurs and abnormal conditions that do not lead to the occurrence of a fire, and it is possible to verify the occurrence of a fire with high precision and accuracy. .

Additionally, if the analog level of the data signal exceeds the preliminary level but ultimately does not reach the alarm level, the video recording operation can be performed completely automatically without any manual intervention by the operator. When the analog level reaches the alarm level, manual operation is performed only to stop the video recording operation at the time of recovery, so recording can be performed reliably and reliably.

Furthermore, by providing an audio recording means, operating it simultaneously with the video recording means, and recording predetermined audio in a reproducible manner in synchronization with the video recording, verification of the occurrence of a fire, etc. can be performed with greater accuracy and accuracy. be able to.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the fire monitoring and control system according to the present invention, Fig. 2 is a block diagram showing an example of the structure of the central monitoring and control device shown in Fig. 1, and Figs. 3 and 4 are video conversion diagrams. 5 [a), (b) and 6 (a), (b) are time charts for explaining the operation according to the present invention, and FIG. 7 is a conventional system. FIG. 1... Central monitoring and control device, 2, 3... Transmission line, 4
... Fire detector, 5 ... Terminal equipment (disaster prevention equipment), 1
0...Central processing unit, 11.12...Transmission device, 13
...Operation unit, 14...Display unit, 15...Video recording unit, 16...Recording control unit, 17...Video conversion unit, 1
8... Judgment processing unit, 19... Alarm control unit, 30...
・Audio recording section...Analog data signal level,
L...Preliminary level, L2...Warning level Patent applicant Nittan Co., Ltd. Patent applicant Obayashi Corporation

Claims (1)

[Claims] 1) A fire monitoring and control system that performs fire monitoring and control by analyzing a transmitted data signal, comprising a level determining means for determining an analog level of the transmitted data signal; or a video recording means for reproducibly recording data obtained by subjecting the data signal to a predetermined conversion;
When the level determining means outputs an instruction indicating that the analog level of the data signal has reached a preliminary level that is set by a predetermined value lower than the alarm level serving as a criterion for determining the occurrence of a fire, the video recording means is activated. A fire monitoring control system comprising: recording control means for activating and starting a video recording operation. 2) In the fire monitoring control system according to claim 1,
When the analog level of the data signal exceeds the preliminary level but does not ultimately reach the alarm level, the recording control means controls the video recording means during the period when the analog level of the data signal exceeds the preliminary level. If the analog level of the data signal exceeds the preliminary level and then reaches the alarm level, during the period from when the analog level exceeds the preliminary level until manual operation is restored.
A fire monitoring control system characterized in that the fire monitoring control system is configured to control the video recording means to perform a video recording operation. 3) The fire monitoring control system according to claim 1 or 2, further comprising a voice recording means for reproducibly recording a predetermined voice, and the voice recording means is controlled by the recording control means to: A fire monitoring control system, characterized in that it operates simultaneously with the video recording means. 4) In a fire monitoring and control method that performs fire monitoring and control by analyzing a transmitted data signal, an image based on the transmitted data signal is displayed on a display device in real time, and an analog level of the transmitted data signal is detected. When the analog level reaches a preliminary level that is set by a predetermined value lower than the alarm level that is used as a criterion for the occurrence of a fire, the transmitted data signal or data obtained by performing a predetermined conversion on the data signal is transmitted. A fire monitoring control method characterized by starting a reproducible recording operation without operator operation.