JP6190862B2 - Monitoring system and monitoring control device thereof - Google Patents

Description

  The present invention relates to a monitoring system for monitoring a fire that occurs in various facilities such as a business office and a plant, and a monitoring control device thereof.

  In offices and plants, a system using an infrared camera is used to monitor a fire of equipment. For example, in the system described in Patent Document 1, an infrared camera is used to capture an image of a monitoring target, and infrared image data obtained thereby is displayed on a display device, and a fire is detected by image processing from the infrared image data. A technique for detecting and notifying is described.

JP 2009-100198 A

  However, in the system described in Patent Document 1, the image level of the infrared image data is simply compared with a preset threshold value, and when a location where the image level is higher than the threshold value is detected, It is determined that a fire has occurred at the location and fire information is issued. For this reason, it is good when the monitoring target is fixed, but when a plurality of monitoring targets are sequentially monitored by turning or tilting one infrared camera, an appropriate determination can be made for the following reason. There may not be.

  That is, when a monitoring target is imaged while turning or tilting one infrared camera, the monitoring target shown in the infrared image data sequentially changes. However, because the upper limit temperature that leads to a fire differs depending on the type and operating conditions of the monitored object, if the fire determination is made with one fixed threshold value, depending on the monitored object, the temperature may not cause a fire. Regardless, there are cases where an alarm is issued or, on the contrary, the temperature is at a risk of causing a fire, but this may be missed.

  In order to solve the above problem, it is conceivable to fix the infrared camera for each monitoring target and take an image of the monitoring target based on a specific threshold, but in this way, the number corresponding to the number of monitoring targets Infrared cameras must be prepared, and the system becomes large and expensive.

  The present invention has been made paying attention to the above circumstances, and the object of the present invention is to enable accurate monitoring of the status of different types of monitoring targets by using a smaller number of infrared cameras than the number of monitoring targets. Accordingly, it is an object of the present invention to provide a monitoring system and a monitoring control device thereof that are inexpensive and enable high-precision monitoring.

  In order to achieve the above object, a first aspect of the present invention is an infrared camera that images a plurality of monitoring targets and outputs infrared image data thereof, and the imaging target can be variably set. A visible camera that outputs visible image data; and a monitoring control device capable of communication between the infrared camera and the visible camera, and the monitoring control device receives infrared image data output from the infrared camera. A first receiving means for extracting, a heat generating part extracting means for extracting a heat generating part exceeding a preset temperature from the received infrared image data, and a monitoring object including the extracted heat generating part is imaged by the visible camera. A second receiving means for receiving the visible image data, and recognizing the monitoring object from the received visible image data, and corresponding to the recognized monitoring object The determination means for determining whether or not the temperature of the heat generating part is abnormal based on the fire determination condition set in advance, and when it is determined that the temperature of the heat generating part is abnormal, Alarm output means for outputting alarm information for notification is provided.

  According to a second aspect of the present invention, when the second receiving means receives visible image data, the visible camera captures the heat generating part based on imaging conditions of the infrared camera when the heat generating part is imaged. An imaging condition for imaging is obtained, an imaging target of the visible camera is variably set based on the imaging condition, and then a monitoring target including the heat generating part is imaged by the visible camera.

  According to a third aspect of the present invention, the determination means includes a data table storing different fire determination conditions in association with each of a plurality of operation modes of the monitoring target for each monitoring target, and the visible image data. Means for reading out from the data table a fire determination condition corresponding to the operation mode of the monitoring target based on the recognized identification information of the monitoring target and the operation mode of the monitoring target when the heat generation part is extracted; A means for determining whether or not the temperature of the heat generating portion is abnormal based on the read fire determination condition is provided.

  According to the first aspect, even when there are a plurality of types of monitoring targets with different fire determination conditions, it is possible to select a fire determination condition for each monitoring target and accurately determine a temperature abnormality for each monitoring target. For this reason, an alarm is generated in spite of the heat generation temperature that does not cause a fire, or on the contrary, it is overlooked even though the heat generation temperature may cause a fire. Can be prevented. In addition, since the monitoring target including the heat generation part is identified based on the visible image data of the visible camera, there is no need to install an infrared camera fixedly for each monitoring target. It is possible to monitor using a small number of infrared cameras and a small number of visible cameras.

  According to the second aspect, based on the imaging conditions of the infrared camera when the heat-generating part is imaged, the imaging conditions for imaging the heat-generating part by the visible camera are obtained, and visible based on the imaging condition. The imaging target of the camera is variably set. For this reason, the imaging target of the visible camera can be reliably directed to the monitoring target including the heat generating part.

  According to the 3rd aspect, even if it is the monitoring object from which a fire determination condition changes with operation modes, the exact fire monitoring according to the operation mode at that time can be performed.

  That is, according to each aspect of the present invention, it is possible to accurately monitor the status of different types of monitoring targets by using a smaller number of infrared cameras than the number of monitoring targets, thereby reducing the cost and providing high-precision monitoring. It is possible to provide a monitoring system and a monitoring control device for enabling the monitoring system.

The figure which shows the whole structure of the monitoring system which concerns on 1st Embodiment of this invention. The block diagram which shows the function structure of the monitoring server of the system shown in FIG. The flowchart which shows the procedure and processing content of the monitoring control by the monitoring server shown in FIG. The figure which shows an example of the monitoring operation | movement with respect to the monitoring object. The figure for demonstrating the monitoring operation | movement by the monitoring system which concerns on 2nd Embodiment of this invention.

[First Embodiment]
(Constitution)
FIG. 1 is a diagram showing an overall configuration of a monitoring system according to the first embodiment of the present invention.
The monitoring system according to the first embodiment is provided corresponding to each of a plurality of infrared cameras SCM1 to SCMn, a smaller number of visible cameras WCM1 to WCMm than the infrared cameras SCM1 to SCMn, and the infrared cameras SCM1 to SCMn. A plurality of encoders ENC11 to ENC1n, a plurality of encoders ENC21 to ENC2m provided corresponding to each of the visible cameras WCM1 to WCMm, and a monitoring server SV functioning as a monitoring control device. The monitoring server SV can communicate with each of the encoders ENC11 to ENC1n and ENC21 to ENC2m via the network NW. The network NW is configured by a local IP network such as a LAN (Local Area Network) or a wireless LAN.

  A plurality of infrared cameras SCM1 to SCMn are distributed in, for example, a site of a business office or an arbitrary place in a plant facility, and take an image of a preset monitoring target area while panning, tilting and zooming, and corresponding the infrared image data. Output to the encoders ENC11 to ENC1n. The encoders ENC11 to ENC1n encode and compress the infrared image data output from the infrared cameras SCM1 to SCMn, and then transmit them to the monitoring server SV via the network NW.

  The visible cameras WCM1 to WCMm are arranged at positions that collectively cover a plurality of monitoring target areas monitored by the infrared cameras SCM1 to SCMn. The visible cameras WCM1 to WCMm are, for example, omnidirectional PTZ cameras that can perform pan, tilt, and zoom operations, and perform the pan, tilt, and zoom operations according to a drive control signal output from the monitoring server SV. And the specific installation etc. which are reflected in the monitoring object area imaged with the said infrared camera SCM1-SCMn are imaged, The visible image data is output to corresponding encoder ENC21-ENC2m. The encoders ENC21 to ENC2m encode and compress the visible image data output from the visible cameras WCM1 to WCMm, and then transmit them to the monitoring server SV via the network NW.

By the way, the monitoring server SV is the core of the monitoring system according to the first embodiment, and is configured as follows. FIG. 2 is a block diagram showing the functional configuration.
That is, the monitoring server SV includes a control unit 1, a storage unit 2, and a communication interface unit 3. The communication interface unit 3 transmits / receives drive control signals and image data to / from the encoders ENC11 to ENC1n and ENC21 to ENC2m through the network NW under the control of the control unit 1.

  The storage unit 2 uses a nonvolatile memory that can be written and read as needed, such as a hard disk drive (HDD) or a solid state drive (SSD), as a storage medium, and is necessary for implementing the first embodiment. As storage areas, an infrared image storage unit 21, an imaging direction data table 22, a visible image storage unit 23, an equipment image database 24, and a fire determination condition storage unit 25 are provided.

  The infrared image storage unit 21 is used to accumulate infrared image data of the monitoring target area captured by the infrared cameras SCM1 to SCMn. The visible image storage unit 23 is used to store visible image data captured by the visible cameras WCM1 to WCMm.

  In the imaging direction data table 22, the imaging directions when the infrared cameras SCM1 to SCMn and the visible cameras WCM1 to WCMm image the same monitoring target area are stored in association with each other. The facility image database 24 stores basic image data of each facility installed in the monitoring target area. The fire determination condition storage unit 25 stores information indicating an allowable temperature range when the equipment is operating normally for each equipment to be monitored.

  The control unit 1 includes a CPU (Central Processing Unit) and a program memory. As control functions necessary for carrying out the first embodiment, an infrared image acquisition control unit 11, a temperature determination processing unit 12, and a visible camera An attitude control unit 13, a visible image acquisition control unit 14, a facility-specific fire determination unit 15, and an alarm generation control unit 16 are provided. All of these control functions are realized by causing the CPU to execute a program stored in the program memory.

  The infrared image acquisition control unit 11 drives and controls the infrared cameras SCM <b> 1 to SCMn so that each monitoring target area is imaged constantly or intermittently, and the communication interface unit 3 receives the infrared image data obtained by the imaging. The process of storing in the infrared image storage unit 21 is performed.

  The temperature determination processing unit 12 has a preset threshold value corresponding to the facility having the lowest upper limit temperature that may lead to a fire among all the facilities to be monitored, and from the infrared image storage unit 21. Infrared image data is read, and a process of extracting a part where the temperature exceeds the threshold value from the read infrared image data is performed.

  When the temperature determination processing unit 12 extracts a heat generating part whose temperature exceeds the threshold value, the visible camera posture control unit 13 images the infrared cameras SCM1 to SCMn when the heat generating part is imaged. Based on the information indicating the direction, a visible camera capable of imaging the heat generating portion and information indicating the imaging direction are searched from the imaging direction data table 22. Then, the retrieved posture of the visible camera is driven and controlled so that the imaging direction is directed to the heat generating part.

  The visible image acquisition control unit 14 operates the visible camera in a state in which the posture control is finished by the visible camera posture control unit 13 to pick up a predetermined range including the heat generation part of the monitoring target area, and is obtained by this image pickup. The received visible image data is received by the communication interface unit 3 and stored in the visible image storage unit 23.

The facility-specific fire determination unit 15 has the following processing functions.
(1) The facility image data shown in the received visible image data is collated with the basic image data of each facility stored in advance in the facility image database 24, and the heat generation part is based on the collation result. The process of identifying the equipment name that contains or the equipment identification number.

  (2) Based on the specified facility name or the identification number of the facility, information indicating the allowable temperature range of the facility is read from the fire determination condition storage unit 25, and the heat previously extracted from the infrared image data Processing for determining whether or not the temperature of the part exceeds the allowable temperature range.

  The alarm generation control unit 16 generates alarm information and sends the alarm information to a terminal for a supervisor (not shown) when the facility fire determination control unit 16 determines that the temperature of the heat generation part exceeds the allowable temperature range. In addition to transmitting, the received visible image data is read from the visible image storage unit 23 and transmitted to the supervisor terminal.

(Operation)
Next, the operation of the monitoring server SV configured as described above will be described. FIG. 3 is a flowchart showing the control procedure and control contents, and FIG. 4 is a diagram for explaining the operation.
Under the control of the infrared image acquisition control unit 11, the monitoring server SV drives and controls the infrared cameras SCM <b> 1 to SCMn in step S <b> 11 to image each monitoring target area, and transmits the infrared image data obtained by the imaging to the communication interface. Received by the unit 3 and stored in the infrared image storage unit 21. At this time, a time stamp indicating the imaging date and time is added to each infrared image data together with camera identification information. Such additional information is used to search for the corresponding infrared image data in elucidating the cause in the event of a fire.

  When the new infrared image data is obtained, the monitoring server SV then reads the infrared image data from the infrared image storage unit 21 in step S12 under the control of the temperature determination processing unit 12, and the temperature is determined from the read infrared image data. The part where is exceeding the threshold is extracted. Then, in step S13, it is determined whether or not a heat generating portion whose temperature exceeds the threshold value is extracted, and the determination result is notified to the visible camera posture control unit 13.

  When the heat generating part exceeding the threshold is extracted, the monitoring server SV first controls the infrared cameras SCM1 to SCMn when the heat generating part is imaged in step S14 under the control of the visible camera posture control unit 13. Based on the information indicating the imaging direction, a visible camera capable of imaging the heat generating part and information indicating the imaging direction are searched from the imaging direction data table 22. In step S15, the searched posture of the visible camera is controlled by panning, tilting, and zooming, and the imaging direction is directed to the heat generating portion.

  For example, as shown in FIG. 4, when the heat generation part X is extracted from the infrared image data imaged by the infrared camera SCM1, the visible camera WCM1 arranged at a position where the heat generation part X can be imaged is selected. Control is performed so that the imaging direction of the visible camera WCM1 is directed to an area including the heat generating portion X.

  When the control of the imaging direction of the visible camera WCM1 is completed, the monitoring server SV subsequently causes the visible camera WCM1 to image a predetermined range including the heat generating part under the control of the visible image acquisition control unit 14 in step S16. The captured visible image data is received by the communication interface unit 3 and stored in the visible image storage unit 23. At this time, the identification information of the captured visible camera and information indicating the imaging date and time are added to the visible image data, and the identification information of the infrared image data used when selecting the visible camera is added. These additional information is used when searching the corresponding infrared image data from the visible image data when investigating the cause of the fire.

When the visible image data is received, the monitoring server SV then makes a fire determination as follows under the control of the equipment-specific fire determination unit 15.
That is, first, in step S17, the equipment image data reflected in the received visible image data is sequentially checked against the basic image data of each equipment stored in advance in the equipment image database 24. And the equipment name including the heat generating part or the identification number thereof is specified. As a result, for example, the equipment P2 is specified in the case of FIG.

  Next, in step S18, based on the name or number of the specified equipment P2, the information indicating the allowable temperature range of the equipment is read from the fire determination condition storage unit 25, and the heat previously extracted from the infrared image data is read. The temperature of the site | part X is compared with the said allowable temperature range. In step S19, it is determined whether or not the temperature of the heat generating portion X exceeds the allowable temperature range. If the temperature exceeds the allowable temperature range, it is determined that the temperature of the facility P2 has become abnormal.

  When the temperature abnormality is detected, the monitoring server SV generates alarm information in step S20 under the control of the alarm generation control unit 16, and transmits the alarm information to a monitor terminal (not shown). At this time, the alarm information includes the temperature at that time, the name or number of the equipment P2 where the temperature abnormality is detected, and information indicating the date and time. At the same time, the received visible image data is read from the visible image storage unit 23 and transmitted to the terminal for the supervisor. As a result, the alarm information and the visible image at this time are displayed on the terminal for the supervisor, and the operator can specify the equipment P2 and instruct the operation state check operation and the fire fighting activity or the preparation thereof. It becomes possible.

(effect)
As described in detail above, in the first embodiment, in the monitoring server SV, a heat generation part is extracted from infrared image data obtained by imaging the monitoring target area, and the range including the extracted heat generation part is imaged by the visible camera WCM1. The equipment that generates heat is identified from the visible image data. Then, by reading the allowable temperature range during normal operation of the specified equipment from the fire determination condition storage unit 25 and comparing the temperature of the heat generating part with the allowable temperature range, whether or not a temperature abnormality has occurred in the equipment. The alarm information is generated when the temperature is abnormal.

  Therefore, even when there are a plurality of types of equipment having different allowable temperature ranges as monitoring targets, it is possible to select a fire determination condition for each equipment and accurately determine a temperature abnormality for each equipment. For this reason, an alarm is generated in spite of the heat generation temperature that does not cause a fire, or on the contrary, it is overlooked even though the heat generation temperature may cause a fire. Can be prevented. In addition, since the equipment of the heat generation part is specified based on the images of the visible cameras WCM1 to WCMm, there is no need to install an infrared camera fixedly for each monitoring target. It is possible to monitor using the infrared cameras SCM1 to SCMn and the visible cameras WCM1 to WCMm.

[Second Embodiment]
In the first embodiment, the infrared cameras SCM <b> 1 to SCMn are configured to be capable of panning, tilting, and zooming so that a plurality of monitoring targets are sequentially imaged. In contrast, in the second embodiment, a plurality of monitoring objects can be imaged at once using a wide-angle infrared camera, and the entire image area of the captured infrared image is divided into a plurality of small areas. The exothermic part is extracted for each area.

  FIG. 5 is a diagram for explaining the operation. In the figure, the entire area imaged by the infrared camera SCM is divided into small areas E1 to E4, and a heat generation part is extracted for each of the small areas E1 to E4 by the temperature determination processing unit 12. In the visible camera posture control unit 13, based on the imaging direction of the infrared camera SCM and the position information of the small area E3 from which the heat generating part X is extracted, the visible camera WCM for imaging the heat generating part X is displayed. Information representing the posture, that is, panning, tilting, and zooming is retrieved from the imaging direction data table 22 and the imaging direction of the visible camera WCM is set.

  Thereafter, the process of identifying the facility of the heat generation part from the visible image data obtained by the visible camera WCM, the process of reading the allowable temperature range of the identified facility from the fire determination condition storage unit 25, and the re-determination condition of the read The process for determining whether or not the temperature of the heat generating portion X is an abnormal temperature and the process for generating alarm information when it is determined as an abnormal temperature are performed in the same manner as in the first embodiment.

  According to the second embodiment, a simple device that does not require panning, tilting, and zooming can be used as the infrared camera, thereby enabling simplification of the system configuration and cost reduction.

[Other Embodiments]
In the first embodiment, fire determination conditions are set for each facility, but a plurality of fire determination conditions may be set for the same facility. For example, even if the same equipment is used, the allowable temperature range may vary depending on the operation mode (stopping, normal operation, maintenance, combustion, temperature rise, etc.). Therefore, in this case, an allowable temperature range is set in association with each of the plurality of operation modes for each facility, and is stored in the fire determination condition storage unit 25. And when reading out the fire judgment condition, it corresponds to the operation mode at that time based on the identification information of the facility specified from the visible image data and the operation mode information acquired from the operation management device (not shown) of the system Read the allowable temperature range. In this way, even if the equipment has a different allowable temperature range depending on the operation mode, it is possible to perform accurate fire monitoring according to the operation mode at that time.

  In the first embodiment, the temperature determination processing unit 12 extracts the part where the temperature is equal to or higher than the threshold value from the infrared image data. The shape and size of the heat generation part is recognized, information indicating the shape and size of the heat generation part is taken into account, the degree of temperature abnormality is determined by the equipment fire determination unit 15, and the determination result is included in the alarm information. It may be.

  When a temperature abnormality is detected in a certain facility, a change in the temperature of the facility may be monitored for a predetermined time thereafter, and alarm information indicating the change may be issued as a subsequent report. For example, if the rate of change exceeds a certain value, it is determined that the urgency is high, and that is included in the alarm information for transmission.

  In the first embodiment, the imaging direction of the visible camera corresponding to the imaging direction of the infrared camera with respect to the heat generating part is searched from the imaging direction data table, but the imaging direction of the infrared camera when the heat generating part is imaged is shown. The calculation may be performed based on the information, the information indicating the imaging direction of the visible camera before directing the imaging direction to the heat generating portion, and the installation position coordinates of the infrared camera and the visible camera.

  In the first and second embodiments, the case where the fire monitoring of the facility installed in the premises of the establishment or in the plant has been described as an example. However, the building and planting in the premises of the establishment including the outdoors are monitored. You may include in object.

  In addition, the types and configurations of the infrared camera and the visible camera, the configuration of the monitoring server, its control procedure, and the control contents can be variously modified without departing from the scope of the invention. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in each embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  SCM1 to SCMn: Infrared camera, WCM1 to WCMn: Visible camera, ENC11 to ENC1n, ENC21 to ENC2n ... Encoder, SV ... Monitoring server SV, NW ... Network, 1 ... Control unit 1, 2 ... Storage unit, 3 ... Communication interface unit DESCRIPTION OF SYMBOLS 11 ... Infrared image acquisition control part, 12 ... Temperature determination process part, 13 ... Visible camera attitude | position control part, 14 ... Visible image acquisition control part, 15 ... Fire determination part according to equipment, 16 ... Alarm generation control part, 21 ... Infrared Image storage unit, 22: imaging direction data table, 23 ... visible image storage unit, 24 ... facility image database, 25 ... fire determination condition storage unit.

Claims (4)

An infrared camera that images a plurality of monitoring targets and outputs infrared image data thereof;
A visible camera capable of variably setting the imaging target, imaging the imaging target and outputting the visible image data;
A monitoring control device capable of communicating with the infrared camera and the visible camera;
The monitoring and control device includes:
First receiving means for receiving infrared image data output from the infrared camera;
Exothermic part extracting means for extracting the exothermic part exceeding the preset temperature from the received infrared image data,
A second receiving means for capturing an image of the monitoring target including the extracted heat generation portion with the visible camera and receiving the visible image data;
A monitoring target is recognized from the received visible image data, and it is determined whether or not the temperature of the heat generating part is abnormal based on a fire determination condition set in advance in association with the recognized monitoring target. Determination means to perform,
And an alarm output means for outputting alarm information for notifying that when the temperature of the heat generating portion is determined to be abnormal.   The second receiving means obtains an imaging condition for imaging the heat-generating part by the visible camera based on an imaging condition of the infrared camera when the heat-generating part is imaged, and based on the imaging condition The monitoring system according to claim 1, wherein after the imaging target of the visible camera is variably set, the monitoring target including the heat generating portion is imaged by the visible camera. The determination means includes
A data table storing different fire determination conditions in association with each of a plurality of operation modes of the monitoring target for each monitoring target;
Based on the identification information of the monitoring target recognized from the visible image data and the operation mode of the monitoring target when the heat generation part is extracted, the fire determination condition corresponding to the operation mode of the monitoring target is the data. Means for reading from the table;
The monitoring system according to claim 1, further comprising: a unit that determines whether or not the temperature of the heat generating portion is abnormal based on the read fire determination condition. An infrared camera that captures multiple monitoring targets and outputs infrared image data thereof, and the imaging target can be variably set, and can communicate with a visible camera that captures the imaging target and outputs its visible image data A monitoring and control device,
First receiving means for receiving infrared image data output from the infrared camera;
Exothermic part extracting means for extracting the exothermic part exceeding the preset temperature from the received infrared image data,
A second receiving means for capturing an image of the monitoring target including the extracted heat generation portion with the visible camera and receiving the visible image data;
A monitoring target is recognized from the received visible image data, and it is determined whether or not the temperature of the heat generating part is abnormal based on a fire determination condition set in advance in association with the recognized monitoring target. Determination means to perform,
And an alarm output means for outputting alarm information for notifying that when the temperature of the heat generating portion is determined to be abnormal.