Fire monitoring device

Abstract

To provide a portable fire monitoring apparatus whose monitoring area can be freely changed.SOLUTION: A fire monitoring apparatus 1 includes a support rod 3 serving as transportation means for use in transporting the apparatus to a monitoring position, and a fire sensor 5 that detects occurrence of a fire. When the fire sensor 5 detects occurrence of a fire, fire occurrence information that notifies occurrence of a fire is transmitted to a predetermined communication device through wireless communication.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an apparatus for monitoring the occurrence of a fire.

Background Art

[0002] Conventionally, a system for monitoring the occurrence of a fire has been known. For example, in Patent Document 1, when a video of a fire extinguishing target area is taken and the occurrence of a fire is detected as a result of image recognition, the occurrence of the fire is notified to a user's mobile terminal, and when a fire extinguishing command signal is transmitted from the mobile terminal, a fire extinguishing system that operates a fire extinguishing device is described.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, since the fire extinguishing system described in Patent Document 1 is fixedly installed and used in a specific house, the fire extinguishing target area cannot be freely changed. Therefore, it was not suitable for use in a multi-purpose event venue where the monitoring target area changes for each event.

[0005] The present invention has been made in view of such circumstances, and an object thereof is to provide a portable fire monitoring device capable of freely changing a monitoring area.

Means for Solving the Problems

[0006] In order to solve the above problems, a fire monitoring device according to the present invention is a portable fire monitoring device, comprising: a transporting means for transporting the fire monitoring device to a monitoring position; a fire detector for detecting the occurrence of a fire; and a transmitting means for wirelessly transmitting fire occurrence information for notifying the occurrence of a fire to a predetermined communication device when the fire detector detects the occurrence of a fire.

[0007] In a preferred embodiment, the fire monitoring device further comprises a detecting means for detecting a displacement amount, an inclination or a rotation angle of the fire monitoring device, and the transmitting means further wirelessly transmits state change information for notifying that the state of the fire monitoring device has changed to the communication device when the displacement amount, the inclination or the rotation angle detected by the detecting means exceeds a threshold value.

[0008] In a more preferred embodiment, the fire monitoring device further comprises a photographing means for photographing the surroundings of the fire monitoring device, and the transmitting means further wirelessly transmits an image photographed by the photographing means to the communication device.

[0009] In a more preferred embodiment, the fire monitoring device further comprises a receiving means for receiving a photographing instruction wirelessly transmitted from the communication device, and the photographing means photographs the surroundings of the fire monitoring device when the photographing instruction is received by the receiving means.

[0010] In a more preferred embodiment, the fire monitoring device further comprises a positioning means, and the transmitting means further wirelessly transmits position information measured by the positioning means to the communication device, and the communication device displays the position of the fire monitoring device on a map.

[0011] In a more preferred embodiment, the fire monitoring device further comprises a human presence sensor for sensing the presence of a person, and the photographing means photographs the surroundings of the fire monitoring device when the presence of a person is sensed by the human presence sensor, stores the photographed image in a recording unit, and further comprises a recording control means for deleting the stored image when no fire occurrence is detected by the fire detector within a predetermined time.

Advantages of the Invention

[0012] According to the fire monitoring device of the present invention, the user can freely change the monitoring area.

Brief Description of the Drawings

[0013]

Figure 1

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Figure 9

Modes for Carrying Out the Invention

[0014] 1. Embodiment 1-1. Configuration The fire monitoring device 1 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an example of the appearance of the fire monitoring device 1. FIG. 2 is a block diagram showing an example of the electrical configuration of the fire monitoring device 1. The fire monitoring device 1 shown in these figures is a portable fire monitoring device that is installed and used for each monitoring target area in a fire protection object such as an event venue. After this fire monitoring device is installed at the monitoring position, when it detects the occurrence of a fire, it notifies the security guards patrolling inside the fire protection object of the occurrence of the fire.

[0015] As shown in Fig. 1, the fire monitoring device 1 includes a leg part 2 in a cross shape in plan view, a support rod 3 extending vertically from the central part of the leg part 2 in plan view, a sensor mounting base 4 fixed to the tip of the support rod 3, two fire sensors 5 fixed to the sensor mounting base 4, a first storage container 6 fixed to the upper part of the support rod 3, and a second storage container 7 fixed to the lower part of the support rod.

[0016] The support rod 3 included in this fire monitoring device 1 is configured to be telescopically extendable, like a strut rod for example, and its length can be changed within a range of, for example, 1.3 m to 2 m. By changing the length of this support rod 3, the height of the fire sensor 5 and the first storage container (in other words, the monitoring range) can be changed. Also, this support rod 3 is a transporting means for transporting the fire monitoring device 1 to the monitoring position, and the user can transport the fire monitoring device 1 by gripping this support rod 3.

[0017] The fire sensor 5 is an infrared type flame sensor. After the power of the fire monitoring device 1 is turned on, the fire sensor 5 receives infrared rays irradiated from a flame, and when the change in the amount of received light exceeds a certain value, it outputs a fire signal to the control unit 10. The two fire sensors 5 are fixed to the sensor mounting base 4 so as to form a fan-shaped monitoring area in front of the fire monitoring device 1. Figs. 3 and 4 are a plan view and a side view showing an example of the monitoring area R.

[0018] The first storage container 6 houses a visible light camera 8 and an infrared camera 9. These cameras are imaging means for photographing the surroundings of the fire monitoring device 1. Specifically, they are housed in the first storage container 6 so as to be able to photograph the surrounding scenery including the monitoring area of the fire sensor 5. These cameras receive a photographing instruction signal from the control unit 10, photograph the monitoring area, and output the photographed image data to the control unit 10. At this time, the photographed image may be a still image or a moving image.

[0019] The second storage container 7 houses the control unit 10, the acceleration sensor 11, the positioning unit 12, the communication unit 13, and the battery 14. The control unit 10 includes a microprocessor and a memory. The functions provided by this control unit 10 will be described later. After the power of the fire monitoring device 1 is turned on, the acceleration sensor 11 periodically detects the acceleration of the fire monitoring device 1 and outputs it to the control unit 10. The positioning unit 12 receives the positioning instruction signal from the control unit 10, measures the position of the fire monitoring device 1 using a well-known indoor positioning technology, and outputs the measured position information to the control unit 10. This positioning unit 12 is an example of the positioning means according to the present invention. The communication unit 13 uses a mobile communication system to wirelessly transmit various notifications to the communication device 15 carried by the security guard. The communication device 15 carried by the security guard will be described later. After the power of the fire monitoring device 1 is turned on, the battery 14 supplies power to each electronic device constituting the fire monitoring device 1.

[0020] The microprocessor included in the control unit 10 provides functions of a fire occurrence notification unit 16, a fall determination unit 17, and a fall occurrence notification unit 18 by executing a control program stored in the memory.

[0021] When the fire occurrence notification unit 16 receives a fire signal output from the fire sensor 5, it outputs a shooting instruction signal to the visible light camera 8 and the infrared camera 9. In response to this shooting instruction signal, the visible light camera 8 and the infrared camera 9 shoot the monitoring area and output the shot image data to the control unit 10. When the fire occurrence notification unit 16 receives the output image data, it then outputs a positioning instruction signal to the positioning unit 12. In response to this positioning instruction signal, the positioning unit 12 measures the position of the fire monitoring device 1 and outputs the measured position information to the control unit 10. When the fire occurrence notification unit 16 receives the output position information, it transmits, as a push notification, fire occurrence information including the received image data and position information and a message notifying the occurrence of a fire to the communication device 15 carried by the security guard. This fire occurrence notification unit 16 is an example of the transmission means according to the present invention.

[0022] The fall determination unit 17 detects the inclination of the fire monitoring device 1 based on the acceleration periodically output from the acceleration sensor 11, and determines whether or not the detected inclination exceeds a predetermined threshold value. Here, the predetermined threshold value is set to an appropriate value (for example, plus or minus 45 degrees) for detecting the fall of the fire monitoring device 1. When the inclination of the fire monitoring device 1 exceeds the predetermined threshold value, the fall determination unit 17 outputs a fall signal to the fall occurrence notification unit 18. This fall determination unit 17 is an example of the detection means according to the present invention.

[0023] When the fall occurrence notification unit 18 receives the fall signal output from the fall determination unit 17, it outputs a shooting instruction signal to the visible light camera 8 and the infrared camera 9. In response to this shooting instruction signal, the visible light camera 8 and the infrared camera 9 capture the monitoring area and output the captured image data to the control unit 10. When the fall occurrence notification unit 18 receives the output image data, it then outputs a positioning instruction signal to the positioning unit 12. In response to this positioning instruction signal, the positioning unit 12 measures the position of the fire monitoring device 1 and outputs the measured position information to the control unit 10. When the fall occurrence notification unit 18 receives the output position information, it transmits, as a push notification, fall occurrence information including the received image data and position information and a message notifying the fall of the fire monitoring device 1 to the communication device 15 carried by the security guard. This fall occurrence information is an example of the state change information according to the present invention. The above is the explanation of the functions provided by the control unit 10.

[0024] Next, the communication device 15 carried by the security guard will be described. FIG. 5 is a block diagram showing an example of the electrical configuration of the communication device 15. The communication device 15 shown in the figure is a portable communication device such as a smartphone or a tablet terminal.

[0025] As shown in the figure, the communication device 15 includes a processor 19 such as a CPU, a volatile memory 20 such as a DRAM, a non-volatile memory 21 such as a flash memory, a network card 22, a display 23 such as a liquid crystal display, and a touch panel 24. Among these components, the non-volatile memory 21 stores the floor map information of the fire protection object and the event notification program executed by the processor 19. When the event notification program is executed by the processor 19, it provides a function called the event notification unit 25.

[0026] When the event notification unit 25 receives the fire occurrence information transmitted from the fire monitoring device 1, it generates a fire occurrence notification screen and displays it on the display 23 together with an alarm sound. FIG. 6 is a diagram showing an example of this fire occurrence notification screen. The fire occurrence notification screen shown in the figure has a message M1 for notifying the occurrence of a fire, a visible light image P1 taken by the visible light camera 8, an infrared image P2 taken by the infrared camera 9, and a floor map image P3 that displays the location of the fire monitoring device 1 (in other words, the fire point) on a map. By referring to the visible light image P1 and the infrared image P2 among these display information, the security guard can visually confirm the actual situation of the fire point. In particular, by referring to the infrared image P2, it is possible to clearly confirm the presence or absence and the degree of the fire even at night. Also, by referring to the floor map image P3, the security guard can easily understand the location of the fire point and quickly rush to the fire point to carry out fire extinguishing activities.

[0027] In addition, when the event notification unit 25 receives the fall occurrence information transmitted from the fire monitoring device 1, it generates a fall occurrence notification screen and displays it on the display 23 together with an alarm sound. FIG. 7 is a diagram showing an example of this fall occurrence notification screen. The fall occurrence notification screen shown in the figure includes a message M2 for notifying a fall, a visible light image P4 captured by the visible light camera 8, an infrared image P5 captured by the infrared camera 9, and a floor map image P6 that displays the position of the fire monitoring device 1 (in other words, the fall position) on a map. By referring to the surrounding scenery shown in the visible light image P4 and the infrared image P5 among these display information, the security guard can confirm whether the fire monitoring device 1 has actually fallen. In particular, by referring to the infrared image P5, it is possible to confirm the presence or absence of a fall even at night. Also, by referring to the floor map image P6, the security guard can easily understand the position of the fallen fire monitoring device 1 and quickly rush to the fall position to return the fallen fire monitoring device 1 to its original posture.

[0028] 1-2. Operation Next, the operation of the fire monitoring device 1 will be described with reference to the sequence diagram shown in FIG. 8.

[0029] The fire monitoring device 1 is transported by the user to the monitoring target area in the event venue and installed so that its front faces the monitoring target area. After installation, when the power is turned on, power is supplied from the battery 14 to each electronic device of the fire monitoring device 1. As a result, the fire determination by the fire sensor 5 and the output of the acceleration by the acceleration sensor 11 are started.

[0030] When a fire signal is output from the fire detector 5 to the control unit 10 as a result of the fire determination by the fire detector 5 (step S1), the fire occurrence notification unit 16 outputs a shooting instruction signal to the visible light camera 8 and the infrared camera 9. In response to this shooting instruction signal, the visible light camera 8 and the infrared camera 9 shoot the monitoring area and output the captured image data to the control unit 10 (step S2). When the fire occurrence notification unit 16 receives the output image data, it then outputs a positioning instruction signal to the positioning unit 12. In response to this positioning instruction signal, the positioning unit 12 measures the position of the fire monitoring device 1 and outputs the measured position information to the control unit 10 (step S3). When the fire occurrence notification unit 16 receives the output position information, it transmits, as a push notification, the fire occurrence information including the received image data and position information and a message notifying the occurrence of a fire to the communication device 15 carried by the security guard (step S4).

[0031] In the communication device 15 that has received this fire occurrence information, when the event notification program is not activated, the program is activated (step S5). After the activation of the program, the event notification unit 25 of the communication device 15 generates a fire occurrence notification screen based on the received fire occurrence information and displays it on the display 23 together with an alarm sound (step S6). An example of the display of the fire occurrence notification screen is as shown in FIG. 6. Referring to this fire occurrence notification screen, the security guard quickly rushes to the fire point relying on the floor map image P3 and conducts fire extinguishing activities.

[0032] On the other hand, after the start of the acceleration output by the acceleration sensor 11, when the fall determination unit 17 detects the occurrence of a fall of the fire monitoring device 1, it outputs a fall signal to the fall occurrence notification unit 18 (step S7). When the fall occurrence notification unit 18 receives the fall signal output from the fall determination unit 17, it outputs a shooting instruction signal to the visible light camera 8 and the infrared camera 9. In response to this shooting instruction signal, the visible light camera 8 and the infrared camera 9 capture the monitoring area and output the captured image data to the control unit 10 (step S8). When the fall occurrence notification unit 18 receives the output image data, it then outputs a positioning instruction signal to the positioning unit 12. In response to this positioning instruction signal, the positioning unit 12 measures the position of the fire monitoring device 1 and outputs the measured position information to the control unit 10 (step S9). When the fall occurrence notification unit 18 receives the output position information, it transmits, as a push notification, fall occurrence information including the received image data and position information and a message notifying the fall of the fire monitoring device 1 to the communication device 15 carried by the security guard (step S10).

[0033] In the communication device 15 that has received this fall occurrence information, when the event notification program is not activated, the program is activated (step S11). After the activation of the program, the event notification unit 25 of the communication device 15 generates a fall occurrence notification screen based on the received fall occurrence information and displays it on the display 23 together with an alarm sound (step S12). An example of the display of the fall occurrence notification screen is as shown in FIG. 7. Referring to this fall occurrence notification screen, the security guard quickly rushes to the fall position relying on the floor map image P6 and returns the fallen fire monitoring device 1 to its original posture. The above is the description of the operation of the fire monitoring device 1.

[0034] According to the fire monitoring device 1 described above, it is possible to quickly carry out fire extinguishing activities at the time of a fire outbreak without having a security guard permanently stationed in the monitoring target area. Also, since the fire monitoring device 1 is portable, the user can freely change the monitoring area. Further, since the fire monitoring device 1 is configured to notify the security guard of a fall when it topples over, the security guard can notice that the fire monitoring device 1 has toppled over and return it to its original position. Additionally, since the fire monitoring device 1 is configured to transmit the captured image and location information of the scene to the security guard when a fire or a fall occurs, the security guard can visually confirm the situation at the scene and quickly rush to the scene.

[0035] 2. Modification Example The above-described embodiment may be modified as follows. Note that the following modification examples may be combined with each other.

[0036] 2-1. Modification Example 1 The appearance of the fire monitoring device 1 is not limited to the example shown in FIG. 1. The shape and arrangement of each component of the fire monitoring device 1 may be arbitrarily changed according to the environment in which the device is actually used. Also, as a means for transporting the fire monitoring device 1, a handle may be attached to the support rod 3 and casters may be attached to the bottom surface of the leg portion 2.

[0037] 2-2. Modification Example 2 The fire monitoring device 1 may be provided with an illuminance sensor and the threshold value of the fire detector 5 may be changed between day and night. Specifically, the detection accuracy of a fire may be improved by setting the threshold value during the day higher than at night.

[0038] 2-3. Modification Example 3 As the fire detector 5, an ultraviolet flame detector may be used. Alternatively, instead of the flame detector, a heat detector or a smoke detector may be used. When a heat detector or a smoke detector is used, the control unit 10 of the fire monitoring device 1 may be configured to provide a function of determining the occurrence of a fire by comparing the analog value output from the detector with a threshold value.

[0039] 2-4. Modification Example 4 When the fire monitoring device 1 is manufactured for use in outdoor facilities, a positioning unit that performs positioning using well-known outdoor positioning technology may be employed instead of the positioning unit 12.

[0040] 2-5. Modification Example 5 The fire monitoring device 1 may be configured to capture an image of the monitoring area upon receiving an instruction from a security guard. In this case, in order to receive a shooting instruction from the security guard, a button for instructing the update of the captured image is provided on the fire occurrence notification screen displayed on the communication device 15. When this button is selected by the security guard, the communication device 15 transmits a shooting instruction to the fire monitoring device 1. When this shooting instruction is received by the receiving means of the fire monitoring device 1, the fire occurrence notification unit 16 outputs a shooting instruction signal to the visible light camera 8 and the infrared camera 9. In response to this shooting instruction signal, the visible light camera 8 and the infrared camera 9 capture an image of the monitoring area and output the captured image data to the control unit 10. When the fire occurrence notification unit 16 receives the output image data, it transmits the received image data to the communication device 15. When this image data is received by the communication device 15, the event notification unit 25 updates the captured image on the fire occurrence notification screen. According to this modification example, the security guard can visually confirm the situation of the fire point at an arbitrary timing.

[0041] Note that the above description is for the case where the security guard gives a shooting instruction when a fire occurs, but the security guard may also be able to give a shooting instruction when a fall occurs.

[0042] 2-6. Modification Example 6 After transmitting the fire occurrence information, the fire monitoring device 1 may update the captured images periodically. In that case, after transmitting the fire occurrence information, the fire occurrence notification unit 16 outputs a periodic shooting instruction signal to the visible light camera 8 and the infrared camera 9. Then, when receiving shooting data from these cameras, it transmits the received image data to the communication device 15. When this image data is received by the communication device 15, the event notification unit 25 updates the captured image on the fire occurrence notification screen. According to this modification example, even after receiving the first report of the fire occurrence, the security guard can continuously visually confirm the situation of the fire point.

[0043] In addition, when this modification example is adopted, in order to receive a shooting stop instruction from the security guard, a button for instructing the stop of the update of the captured image may be provided on the fire occurrence notification screen displayed on the communication device 15. When this button is selected by the security guard, the communication device 15 transmits a shooting stop instruction to the fire monitoring device 1. When this shooting stop instruction is received by the fire monitoring device 1, the fire occurrence notification unit 16 stops outputting the shooting instruction signal to the visible light camera 8 and the infrared camera 9.

[0044] The above description is about the case of updating the captured image periodically when a fire occurs, but the captured image may also be updated periodically when a fall occurs.

[0045] 2-7. Modification Example 7 The communication device 15 may identify the position of the fire monitoring device 1. In that case, the fire monitoring device 1 transmits its device ID to the communication device 15 instead of the position information. The communication device 15 stores in advance the association between the device ID of the fire monitoring device 1 and the installation location, and generates a floor map image P3 or P6 that displays the installation location corresponding to the device ID received from the fire monitoring device 1 on the map. According to this modification example, the positioning unit 12 in the fire monitoring device 1 can be omitted.

[0046] 2-8. Modification Example 8 The fire monitoring device 1 may be linked with an existing communication service (e.g., LINE (registered trademark)) so that various notifications can be received using an existing communication app. In that case, instead of the communication device 15, the fire occurrence notification unit 16 of the fire monitoring device 1 transmits fire occurrence information to the server that provides the communication service, and the server transmits the fire occurrence information to the communication device 15. FIG. 9 is a diagram showing an example of fire occurrence information displayed using a communication app in the communication device 15. The fire occurrence information shown in the figure includes a message M3 for notifying the occurrence of a fire, a visible light image P7 captured by the visible light camera 8, an infrared image P8 captured by the infrared camera 9, and a floor map image P9 showing the location of the fire monitoring device 1 on a map. According to this modification, the security guard does not need to install an event notification program to receive various notifications from the fire monitoring device 1.

[0047] Note that the above description is for the case of transmitting fire occurrence information, but an existing communication service may also be used when transmitting fall occurrence information.

[0048] 2-9. Modification Example 9 The fire monitoring device 1 may be provided with an angular velocity sensor so as to notify a security guard when the orientation of the device has changed. In that case, the control unit 10 of the fire monitoring device 1 provides a rotation determination unit and a rotation occurrence notification unit to notify the security guard of the change in orientation. The rotation determination unit detects the rotation angle around the support rod 3 of the fire monitoring device 1 based on the angular velocity periodically output from the angular velocity sensor, and determines whether the detected rotation angle exceeds a predetermined threshold value. Here, the predetermined threshold value is set to the allowable deviation angle of the fire monitoring device 1. This rotation determination unit is an example of the detection means according to the present invention. When the rotation angle detected by the rotation determination unit exceeds the predetermined threshold value as a result of the determination by the rotation determination unit, the rotation occurrence notification unit transmits rotation occurrence information to the communication device 15 as a push notification. This rotation occurrence information includes a message notifying that the orientation of the fire monitoring device 1 has been changed, image data captured by the visible light camera 8 and the infrared camera 9, and position information measured by the positioning unit 12. This rotation occurrence information is an example of the state change information according to the present invention. The event notification unit 25 of the communication device 15 that has received this rotation occurrence information generates a rotation occurrence notification screen and causes it to be displayed on the display 23 together with an alarm sound. This rotation occurrence notification screen has a message notifying the occurrence of rotation, a captured image, and a floor map image showing the position of the fire monitoring device 1 on a map. By referring to this screen, the security guard can notice that the orientation of the fire monitoring device 1 has changed, rush to the original position of the device, and return the orientation to the original state.

[0049] 2-10. Modification Example 10 It is also possible to monitor the displacement amount of the fire monitoring device 1 and notify a security guard when the device has been taken away. In that case, the control unit 10 of the fire monitoring device 1 provides a removal determination unit and a removal notification unit to notify the security guard of the removal. The removal determination unit detects the displacement amount of the fire monitoring device 1 based on the position information periodically output from the positioning unit 12, and determines whether the detected displacement amount exceeds a predetermined threshold value. Here, the predetermined threshold value is set to the allowable displacement amount of the fire monitoring device 1. This removal determination unit is an example of the detection means according to the present invention. When the detected displacement amount exceeds the predetermined threshold value as a result of the determination by the removal determination unit, the removal notification unit transmits removal occurrence information to the communication device 15 as a push notification. This removal occurrence information includes a message notifying that the fire monitoring device 1 has been taken away, image data captured by the visible light camera 8 and the infrared camera 9, and position information measured by the positioning unit 12. This removal occurrence information is an example of the state change information according to the present invention. The event notification unit 25 of the communication device 15 that has received this removal occurrence information generates a removal occurrence notification screen and displays it on the display 23 together with an alarm sound. This removal occurrence notification screen has a message notifying the occurrence of removal, a captured image, and a floor map image showing the position of the fire monitoring device 1 on a map. By referring to this screen, the security guard can notice that the fire monitoring device 1 has been taken away and track the whereabouts of the device.

[0050] 2-11. Modification Example 11 The fire monitoring device 1 may be provided with a human presence sensor to notify a security guard of the intrusion of a person. In that case, the control unit 10 of the fire monitoring device 1 provides an intrusion notification unit to notify a security guard of the intrusion of a person. When the human presence sensor detects the presence of a person, the intrusion notification unit transmits intrusion occurrence information to the communication device 15 as a push notification. This intrusion occurrence information includes a message notifying of the intrusion of a person, image data captured by the visible light camera 8 and the infrared camera 9, and position information measured by the positioning unit 12. The event notification unit 25 of the communication device 15 that has received this intrusion occurrence information generates an intrusion occurrence notification screen and displays it on the display 23 together with an alarm sound. This intrusion occurrence notification screen has a message notifying of the intrusion of a person, a captured image, and a floor map image showing the position of the fire monitoring device 1 on a map. By referring to this screen, the security guard can notice the intrusion of a person and rush to the scene to apprehend the intruder.

[0051] In addition, when this modification is adopted, in order to record the behavior of the intruder, the control unit 10 may provide a recording control unit. This recording control unit is an example of the recording control means according to the present invention. When the human presence sensor detects the presence of a person, this recording control unit outputs a shooting instruction signal to the visible light camera 8 and the infrared camera 9. In response to this shooting instruction signal, the visible light camera 8 and the infrared camera 9 periodically shoot the monitoring area and output the captured image data to the control unit 10. The recording control unit stores the output image data in the memory in chronological order. This memory is an example of the recording unit according to the present invention. By recording the behavior of the intruder as an image in this way, it becomes easier to prove the case when the intruder commits a criminal act such as arson. Note that the stored image data may be deleted from the memory by the recording control unit if the occurrence of a fire is not detected by the fire detector 5 within a predetermined time after the recording. Here, "deletion" includes not only the complete deletion of the image data but also making the image data overwritable.

[0052] 2-12. Modification Example 12 The communication device 15 used by the security guard may be a stationary communication device installed at the security guard's post.

[0053] 2-13. Variation 13 When multiple fire monitoring devices 1 are used within a fire protection object, they may be used in cooperation. Specifically, multiple fire monitoring devices 1 may be paired using short-range wireless communication such as Bluetooth (registered trademark). When a fire is detected by one device, the other device may also be made to photograph the monitoring area. In that case, the fire monitoring device 1 is provided with a short-range wireless communication unit, and after power-on, it is made to pair with other surrounding fire monitoring devices 1. Then, when a fire is detected by one fire monitoring device 1 (hereinafter, "fire monitoring device 1A"), the fire occurrence notification unit 16 of the device transmits a photographing instruction to the other fire monitoring device 1 (hereinafter, "fire monitoring device 1B"). The fire monitoring device 1B that has received this photographing instruction causes the visible light camera 8 and the infrared camera 9 to photograph the monitoring area of the device, and transmits the photographed image data to the fire monitoring device 1A. The fire occurrence notification unit 16 of the fire monitoring device 1A that has received this image data transmits fire occurrence information further including the received image data to the communication device 15. By referring to this image data, the security personnel can also confirm the state around the fire point.

[0054] Note that the above description is for the case of detecting a fire. However, when the presence of a person is detected by a human presence sensor, the other fire monitoring devices 1 may also be made to photograph the monitoring area.

[0055] Also, when the fire monitoring devices 1 are made to cooperate as described above, the image data photographed by the fire monitoring device 1 that has detected the occurrence of a fire or the presence of a person may not be transmitted to the communication device 15 intentionally. That is, only the image data photographed by the other fire monitoring device 1 may be transmitted to the communication device 15.

Explanation of Reference Numerals

[0056] 1…Fire monitoring device, 2…Foot part, 3…Support rod, 4…Sensor mounting table, 5…Fire sensor, 6…First storage container, 7…Second storage container, 8…Visible light camera, 9…Infrared camera, 10…Control unit, 11…Acceleration sensor, 12…Position measurement unit, 13…Communication unit, 14…Battery, 15…Communication device, 16…Fire occurrence notification unit, 17…Falling determination unit, 18…Falling occurrence notification unit, 19…Processor, 20…Volatile memory, 21…Non-volatile memory, 22…Network card, 23…Display, 24…Touch panel, 25…Event notification unit, M1, M2, M3…Messages, P1, P4, P7…Visible light images, P2, P5, P8…Infrared images, P3, P6, P9…Floor map images

Claims

[Claim 1] A fire detector for detecting the occurrence of a fire; a transmission means for transmitting, when the fire detector detects an occurrence of a fire, fire occurrence information notifying the occurrence of a fire to a predetermined communication device via wireless communication; a communication unit that pairs with another fire monitoring device installed around the fire detector among at least one other fire monitoring device and communicates with the other fire monitoring device; When the fire detector detects the occurrence of a fire, the communication unit transmits an instruction to capture an image of the monitoring area of ​​the fire detector to the other fire monitoring device with which the pairing has been performed, and receives an image of the monitoring area of ​​the fire detector captured by the other fire monitoring device in response to the image capture instruction from the other fire monitoring device, The fire detector further includes an imaging means for imaging a monitoring area of ​​the fire detector, A fire monitoring device characterized in that the transmission means transmits an image of the monitored area captured by the photographing means and an image of the monitored area captured by the other fire monitoring device received by the communication unit to the communication device via wireless communication.

Images