JP2829785B2 - Fire monitoring control system and fire monitoring control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a fire monitoring control system and a fire monitoring control method for performing a fire monitoring control based on information from a fire detector and a sensor for detecting temperature, smoke and the like. About.

[Conventional technology]

Conventionally, as a system capable of reproducing and displaying a fire occurrence situation, for example, a system disclosed in JP-A-63-208189 is known. FIG. 7 is a diagram showing a configuration example of a conventional system of this kind. In this system, when a detection signal from the fire detector 50 is sent to the central monitoring and control device 52 via the transmission line 51, the central monitoring and control device 52
Then, this detection signal is decoded by the main CPU 53, and as a result, if it is determined that this is an abnormal signal, the main CPU 53
The U53 outputs a fire data signal required for a fire display, and supplies this to the CRT CPU 55 via the interface.

When the CRT CPU 55 receives the fire data signal from the main CPU 53, the CRT CPU 55 can send the image data to the CRT display 56 and display the fire occurrence status on the CRT screen.

At this time, in the system shown in FIG.
And a switching means 58 for controlling the writing and reading of data between the CRT CPU 55 and the monitor memory 59, so that when a fire occurs, At the same time as displaying an image in real time on the CRT display device 56, the switching means 58 is switched by an operation from a monitor operation unit 57 provided with operation switches and the like, and the data signal transmitted from the main CPU 53 to the CRT CPU 55 is transmitted. Can be written into the monitor memory 59.

In this way, once the data signal at the time of the fire occurrence is once stored in the monitor memory 59, the monitor memory 59
By reading out the stored data signal as needed at the time of fire suppression and sending it to the CRT CPU 55, the CRT display device 5
The fire occurrence status and the like can be reproduced and displayed in FIG. 6, thereby providing effective information for elucidating the cause of the fire occurrence.

[Problems to be solved by the invention]

However, in the conventional system as described above,
Since the data signal from the time when the fire actually occurred was stored and recorded in the monitor memory 59, the situation before the fire was not recorded, and it could not be reproduced and displayed. There was a problem. For this reason, even if a fire actually occurs, it is not possible to more accurately verify the occurrence of the fire, and to take measures against abnormal situations that do not lead to the occurrence of the fire. There were drawbacks such as difficulty.

According to the present invention, a situation before a fire actually occurs or an abnormal situation that does not lead to the occurrence of a fire can be recorded in a reproducible manner. Further, the recording can be performed reliably and reliably. It is an object of the present invention to provide a fire monitoring control system and a fire monitoring control method which can be controlled.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a fire monitoring control system having a video converter for generating a predetermined image signal based on a transmitted data signal, wherein the level determining means determines the level of the transmitted data signal. Recording means for reproducibly recording the image signal or a video signal converted from the image signal, and recording control means for controlling start and stop of a recording operation of the recording means, wherein the recording control means When the level determining means outputs an instruction indicating that the level of the data signal has reached a preliminary level set by a predetermined value lower than an alarm level serving as a fire criterion, a recording operation is performed on the recording means. After the start of the recording operation, if the level determining means outputs an instruction indicating that the level of the data signal has reached the alarm level, the recovery operation is performed. When the recording operation is performed, the recording operation by the recording unit is controlled to stop, and the recording unit includes an image signal or an image signal from when the level of the data signal exceeds the reserve level until a restoration operation is performed. It is characterized in that the video signal converted from is recorded so as to be reproducible even after a restoration operation is performed.

Also, the present invention provides a fire monitoring control system having a video conversion unit for generating a predetermined image signal based on a transmitted data signal, a level determining means for determining a level of the transmitted data signal, Or recording means for recording a video signal converted from the image signal in a reproducible manner, and recording control means for controlling start and stop of the recording operation of the recording means, wherein the recording control means,
When the level judging means outputs an instruction indicating that the level of the data signal has reached a preliminary level set by a predetermined value lower than the alarm level serving as a fire occurrence judging standard, the recording operation is performed on the recording means. After the start of the recording operation, if the level determining means does not finally output an instruction that the level of the data signal has reached the alarm level, it indicates that the level of the data signal has fallen below the preliminary level. When the level determining means outputs an instruction, the recording means controls the recording means to stop the recording operation, and the recording means determines that the data signal level exceeds the preliminary level and the data signal level becomes less than the preliminary level. The video signal converted from the video signal or the video signal converted from the video signal can be reproduced even after the level of the data signal becomes lower than the preliminary level. It is characterized by being recorded retained.

Further, there may be further provided an audio recording means which operates simultaneously with the video recording means under the control of the recording control means and records a predetermined audio so as to be reproducible.

[Action]

According to the present invention, even when the analog level of the transmitted data signal does not reach the alarm level, the video recording operation is automatically started when the preliminary level is reached, whereby the analog level is changed from the preliminary level. It is possible to record a video image in a reproducible state without requiring an operator's operation even when the alarm is at or before the alarm level.

If the analog level of the data signal exceeds the reserve level but does not finally reach the alarm level, the video recording operation is automatically performed while the analog level exceeds the reserve level. Fully automatic recording of video is performed. When the analog level reaches the alarm level, the video recording operation can be stopped manually.

Further, by providing an audio recording unit and operating it simultaneously with the video recording unit, it is possible to record a predetermined audio in a reproducible manner in synchronization with the video recording.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram of an embodiment of a fire monitoring control system according to the present invention. Referring to FIG. 1, a fire monitoring and control system according to the present embodiment includes a central monitoring and control device 1 for centralized monitoring and control, and a fire sensor connected to the central monitoring and control device 1 via transmission lines 2 and 3, respectively. 4, terminal equipment 5.

The terminal device 5 includes, for example, a fire alarm,
The fire detector 4 and the terminal device 5, which are disaster prevention devices such as a disaster prevention door, are installed in each monitoring area.

The central monitoring and control apparatus 1 is installed in, for example, a disaster prevention center, and uses fire alarms, smoke prevention dampers, fire doors, and other disaster prevention devices based on analog data signals from the fire detectors 4, that is, terminal devices 5, Is controlled.

FIG. 2 is a diagram showing an example of the configuration of the central monitoring and control apparatus 1. Referring to FIG. 2, the central monitoring and control apparatus 1 includes a central processing unit 10 for performing overall processing control, a fire detector 4, and a central processing unit. A transmission unit 11 for performing data transmission with the processing unit 10,
A transmission unit 12 for performing data transmission between the terminal device 5 and the central processing unit 10, an operation unit 13 for giving a predetermined instruction to the central processing unit 10, and analog data from the fire detector 4 CRT on which predetermined video based on the signal is displayed on the screen
A display unit 14 such as a display, a video recording unit 15 that reproducibly records a video based on an analog data signal from the fire detector 4, and a recording control unit 16 that performs recording control on the video recording unit 15 are provided. ing.

The central processing unit 10 includes, in particular, a video conversion unit 17, a determination processing unit 18, and an alarm control unit 19, and the video conversion unit
17 generates a predetermined image based on the analog data signal when the analog data signal is transmitted from the fire detector 4 and supplies the generated image to the display unit 14, or when the image recording unit 15 is driven, The generated video is provided to the video recording unit 15 or the like.

The video recording unit 15 may be, for example, a video tape recorder or a memory such as a hard disk (HD), a compact disk (CD), or a RAM. When a video tape recorder is used as the video recording unit 15, the video conversion unit 17 can be configured as shown in FIG. That is, in the example of FIG. 3, the video conversion unit 17 directly supplies the R (red), G (green), and B (blue) color signals CS from the display controller (for example, a CRT controller) 20 to the display unit 14. On the other hand, R,
The G and B color signals CS can be converted into video signals by the signal converter 21 and provided to the video recording unit 15 as a video tape recorder.

When a memory such as a compact disc is used as the video recording unit 15, the video conversion unit 17 can be configured as shown in FIG. That is, in the example of FIG. 4, the video conversion unit 17 supplies the image signal PS to the display unit 14 via the display controller 20 and simultaneously outputs the image signal PS.
Or the data signal DS before being converted into the image signal can be provided to the memory 15.

Although not shown, a clock is provided in the video conversion unit 17,
Display unit 14 displays the time from the clock together with video and data signals.
The time may be provided to the video recording unit 15 so that the display unit 14 displays the time together with the video, and the video recording unit 15 may record the time together with the video and the data signal.

In addition, the judgment processing unit 18 of the central processing unit 10
To detect the level of the analog data signal from the controller, output the standby signal PRE when the detected level exceeds the standby level, and output the fire signal ALM when the detected level exceeds the alarm level. Has become. Note that the preliminary level is set in advance by a predetermined value lower than the alarm level serving as a criterion for judging the occurrence of a fire.Therefore, the preliminary signal PRE is set to a level at which the analog data signal is between the preliminary level and the alarm level. At a certain time, that is, when it is determined that some abnormality that does not lead to the occurrence of a fire but may cause a fire has occurred. On the other hand, the fire signal ALM is output when it is determined that a fire has actually occurred.

Further, the alarm control unit 19 controls a fire alarm based on the judgment result of the judgment processing unit 18.

Further, the recording control unit 16 starts the output of the preliminary signal PRE from the determination processing unit 18 of the central processing unit 10 when the level of the analog data signal exceeds the preliminary level.
Control signal CTL to the video recording unit 1 from this point.
5 is supposed to work.

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 eventually reach the alarm level. During the period (that is, during the period when the spare signal PRE is being output), and when the level of the analog data signal exceeds the spare level,
Thereafter, when a fire alarm is further issued beyond the fire level, the alarm is output from the time when the reserve level is exceeded to the time of recovery by manual operation.

In the present embodiment, the central monitoring and control device 1
Voice recording unit 30 that reproducibly records the voices of conversations in the disaster prevention center, emergency telephone conversations, and command conversations issued to each monitored area.
If the voice recording unit 30 is further provided in the central monitoring and control device 1, the voice recording unit 30
Operates in response to a control signal CTL from the recording control unit 16 like the video recording unit 15, and performs audio recording in synchronization with the video recording operation.

Next, a fire monitoring control operation in such a configuration will be described. When there is a call from the central monitoring and control device 1,
The fire detector 4 returns an analog data signal relating to the detected phenomenon such as heat or smoke to the central monitoring and control device 1. When an analog data signal is sent from the fire detector 4, the central monitoring and control device 1 analyzes the level of this analog data signal in the judgment processing unit 18 of the central processing unit 10 to judge whether a fire has occurred. When a judgment is made, a fire alarm is issued, and the terminal device 5, 5 in the monitored area where the fire detector 4 to which the analog data signal is sent is installed.
That is, disaster prevention devices such as smoke exhaust dampers and fire doors at required locations are controlled.

At this time, based on the analog data signal sent from the fire detector 4, an image is generated in the image conversion unit 17 of the central processing unit 10, and the image is displayed on the display unit 14. The operator in the disaster prevention center can know the situation of the fire occurrence and the operation state of the disaster prevention equipment by watching the image displayed on the display unit 14. Further, when a clock is provided in the video conversion unit 17 and the time is displayed together with the video on the display unit 14, the operator can accurately know the passage of time and the like.

By the way, in the judgment processing unit 18 of the central processing unit 10,
When the level of the analog data signal sent from the fire detector 4 exceeds an alarm level serving as a criterion for determining the occurrence of a fire, a fire signal ALM is output to control the disaster prevention equipment and the like as described above. However, even when the level of the analog data signal does not exceed the alarm level, if the level exceeds the reserve level, the spare signal PRE is output. When the preliminary signal PRE is output from the determination processing unit 18, the recording control unit 16 sends a control signal CT to the video recording unit 15.
L is output, and the recording operation of the video recording unit 15 is started.

The FIG. 5 (a), and if the level L of the analog data signal exceeds the reserve level L ₁ is not lead to the final warning level L ₂ is shown, in this case, the recording control unit 16
As shown in FIG. 5 (b), the time t ₂ level L of the analog data signal to the level from the time t ₁ exceeds the reserve level L ₁ (or t ₃₎ L is the reserve level L ₁ or less ( Or
During the period until t _4), and outputs a control signal CTL. Thus, the video recording unit 15, the time exceeds the reserve level L ₁ t
The video from ₁ (or t ₃ ) to the time t ₂ (or t ₄ ) when the level becomes equal to or lower than the preliminary level L ₁ can be automatically recorded.

Further, in the FIG. 6 (a), the level L of the analog data signal exceeds the reserve level L _1, and thereafter, there is shown a case where further exceeding the warning level L _2, in this case, the recording control unit 16, as shown in FIG. 6 (b), between the time t ₅ the level L of the analog data signal exceeds a reserve level L ₁ to recover the time t ₆ of the manual operation, and outputs a control signal CTL.
This makes it possible to record images during the video recording unit 15, from the time t ₅ exceeds the reserve level L ₁ to recover the time t _6.

Thus, in this embodiment, the preliminary level L ₁ level L of the analog data signal if not exceeded the warning level L ₂
Video is recorded when it exceeds
As shown in FIGS. 5 (a) and 5 (b), it is possible to record an abnormal situation that does not lead to the occurrence of a fire. In addition, as shown in FIGS. 6 (a) and 6 (b), FIG. as the previous situation where fire actually occurs, i.e., it is possible also to record the situation from the time t ₅ exceeds the reserve level L ₁ to the time t ₇ to be warning level L _2. As a result, it is possible to perform not only the recording of the fire status but also the recording of the occurrence of a false report, the record for maintenance and inspection, the record for training, and the like.

When the video recording unit 15 is, for example, a video tape recorder and the video conversion unit 17 is configured as shown in FIG. 3, the same video displayed on the display unit 14 is continuously displayed on the video tape 40. After a predetermined image is recorded on the video tape 40, the operator of the disaster prevention center or the like can store the video tape 40 in the central monitoring control device 1 or at any time after the predetermined video is recorded on the video tape 40. A continuous image can be reproduced and displayed on the display device 42 by setting the image reproducing device 41 separately from the monitoring control device 1.

Further, the video image obtained as a result of conversion and generation by the video image conversion unit 17 may not be recorded in the video image recording unit 15. For example, when the video recording unit 15 is a memory such as a compact disk and the video conversion unit 17 is configured as shown in FIG. 4, the analog data signal is continuously transmitted to save the memory capacity. Can be recorded in the memory 15 or
State change to analog data signal (judgment result, control command)
This state change data is recorded in the memory 15 together with the time only when there is a
15 to read the data recorded in the
After being converted into an image signal, the image signal can be reproduced and displayed on the display unit 14 via the display controller 20.

When this manner reproduction display an image, as described above in the image to be reproduced and displayed, because it includes also the image under warning level L ₂ following conditions, thereby, the operator verification of fire Can be performed with high accuracy and accuracy, and it becomes easier to more accurately take measures for improving equipment and false alarms. Furthermore, when a clock is provided in the video conversion unit 17, the video recording unit 15 can also record the time together with the video or data signal. Is also displayed. In this case, the user can accurately grasp the time course of the situation and the like, and it becomes easier to take measures more accurately.

In the present embodiment, the level L of the analog data signal is
Valid but reaches a preliminary level L _1, without operating a switch or the like of an operator operating unit 13, the recording operation is started automatically, a situation that the recording is not performed by the operation forget or operation error or the like of the operator This makes it possible to reliably and reliably record the target video. Further, when the level L of the analog data signals which even exceeds the reserve level L ₁ does not exceed the final warning level L _2, since the recording operation when it is in the backup level L ₁ or less automatically stops in this case, does not depend on the operator fully automatic recording can be also when the level L of the analog data signal exceeds a Keibo level L _2, only the recording operation operator moth during recovery operates a predetermined switch of the operation unit 13 Can be stopped.

Further, when the central monitoring and control device 1 is provided with the audio recording unit 30, the recording control unit 16 outputs a control signal CTL as shown in FIG. 5 (b) or FIG. 6 (b). During this period, the voice recording unit 30 is operated, and at the same time as the video recording by the video recording unit 15, the voice recording unit 30 outputs the voice of the conversation in the disaster prevention center, the emergency telephone conversation, and the command conversation issued to each monitoring area. Can be recorded and played back later. As a result, it is possible to make even more accurate verifications and countermeasures.

In the above embodiment, only the fire detector 4 is provided in each monitoring area as a device for transmitting an analog data signal. However, in addition to the fire detector 4, various other sensors are provided. It may be.

〔The invention's effect〕

As described above, according to the present invention, even when the analog level of the transmitted data signal does not reach the alarm level, the video recording operation is started when the analog level of the transmitted data signal reaches the preliminary level. Therefore, it is possible to reproducibly record a situation before the fire actually occurs or an abnormal situation that does not lead to the occurrence of the fire, and it is possible to accurately and accurately verify the occurrence of the fire. .

If the analog level of the data signal exceeds the preliminary level but does not reach the alarm level, the video recording operation can be performed completely automatically without any manual operation by the operator. When the analog level reaches the alarm level, the manual operation is performed only to stop the video recording operation at the time of restoration, so that the recording can be performed reliably and with high reliability.

Further, a sound recording means is provided, which is operated simultaneously with the video recording means, and a predetermined sound is recorded so as to be reproducible in synchronization with the video recording, thereby making it possible to more accurately and accurately verify the occurrence of a fire. be able to.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of a fire monitoring and control system according to the present invention, FIG. 2 is a diagram showing a configuration example of a central monitoring and control device shown in FIG. 1, and FIGS. FIGS. 5 (a), 5 (b), 6 (a), and 6 (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), 10 central processing unit, 11, 12 transmission device, 13 ... Operation unit, 14 ... Display unit, 15 ... Video recording unit, 16 ... Record control unit, 17 ... Video conversion unit, 18 ... Judgment processing unit, 19 ... Alarm control unit, 30 ... Audio recording Section, L: Analog data signal level, L _1: Reserve level, L _2: Alarm level

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-262797 (JP, A) JP-A-2-224497 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G08B 17/00

Claims (4)

(57) [Claims] 1. A fire surveillance control system having a video converter for generating a predetermined image signal based on a transmitted data signal, a level judging means for judging a level of the transmitted data signal, Recording means for recording a video signal converted from the image signal in a reproducible manner; and recording control means for controlling start and stop of a recording operation of the recording means, wherein the recording control means determines a fire When the level determining means outputs an instruction indicating that the level of the data signal has reached a preliminary level which is lower than the alarm level by a predetermined value, the recording means starts the recording operation, and performs the recording operation. After the start of the operation, if the level determination unit outputs an instruction indicating that the level of the data signal has reached the alarm level, the recovery operation is performed. The recording means is controlled to stop the recording operation, and the recording means includes an image signal or a video signal converted from the image signal between the time when the level of the data signal exceeds the reserve level and the time when the restoration operation is performed. However, the fire monitoring and control system is characterized in that the information is recorded so as to be reproducible even after a recovery operation is performed. 2. A fire surveillance control system having a video converter for generating a predetermined image signal based on a transmitted data signal, a level judging unit for judging a level of the transmitted data signal; Recording means for recording a video signal converted from the image signal in a reproducible manner; and recording control means for controlling start and stop of a recording operation of the recording means, wherein the recording control means determines a fire When the level determining means outputs an instruction indicating that the level of the data signal has reached a preliminary level which is lower than the alarm level by a predetermined value, the recording means starts the recording operation, and performs the recording operation. If the level determination means does not finally output an instruction that the level of the data signal has reached the alarm level after the start of When the level judging means outputs an instruction indicating that the level has become equal to or lower than the reserve level, the recording means controls the recording means to stop the recording operation. An image signal or a video signal converted from the image signal until the signal level falls below the reserve level can be reproduced even after the data signal level falls below the reserve level. A fire monitoring and control system characterized by being held. 3. A fire monitoring control method for generating a predetermined image signal based on a transmitted data signal and performing fire monitoring control, wherein the image signal or a video signal converted from the image signal is displayed on a display device in real time. While displaying, the level of the transmitted data signal is detected, and when the level reaches a preliminary level set by a predetermined value lower than an alarm level serving as a criterion of fire occurrence,
A recording operation capable of reproducing the image signal or a video signal converted from the image signal is started without operation of an operator, and when the level of the data signal further reaches an alarm level after the start of the recording operation, Wherein the recording operation is stopped when a recovery operation is performed. 4. A fire monitoring control method for generating a predetermined image signal based on a transmitted data signal and performing fire monitoring control, wherein the image signal or a video signal converted from the image signal is displayed on a display device in real time. While displaying, the level of the transmitted data signal is detected, and when the level reaches a preliminary level set by a predetermined value lower than an alarm level serving as a criterion of fire occurrence,
A recording operation capable of reproducing the image signal or a video signal converted from the image signal is started without operation of an operator, and after the recording operation is started, the level of the data signal exceeds the preliminary level. Wherein the recording operation is stopped without operation of an operator when the level of the data signal falls below the reserve level when the alarm level is not reached.