JP6975667B2 - Fire detector - Google Patents

Description

The present invention relates to a fire detection device.

Conventionally, as one of the techniques for detecting a fire in a wide range of monitoring areas for a fire detection device that detects a fire in a monitoring area, horizontal scanning and vertical scanning of the field of view of the monitoring area are optically performed. A technique for detecting a fire has been proposed (see, for example, Patent Document 1). Further, the horizontal scanning method is performed by, for example, intermittently turning the infrared sensor and the condensing optical system of the fire detection device horizontally by the horizontal scanning motor of the fire detection device, and the vertical scanning method is described. For example, the scanning mirror is continuously swiveled in a vertical direction by a vertical scanning motor of a fire detection device to scan the field of view of the infrared sensor in a vertical direction.

Japanese Unexamined Patent Publication No. 2016-59426

Here, in the above-mentioned conventional technique, as described above, when the field of view by the infrared sensor and the condensing optical system (horizontal swivel part) is intermittently swirled in the horizontal direction by the horizontal scanning motor in the horizontal scanning, the horizontal swivel part is obtained. Vibration noise was generated by the horizontal swivel part vibrating due to the inertial force at the timing when the As a result, for example, a person in the monitoring area may feel the vibration sound annoying, so there is room for improvement from the viewpoint of usability. Especially in music venues and lecture venues where a quiet environment is required, noise due to vibration noise has been a problem.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a fire detection device capable of improving the usability of the fire detection device.

The fire detection device according to claim 1 is a fire detection device for detecting and notifying a fire in a monitoring area in order to solve the above-mentioned problems and achieve the object, and is a detection target from the monitoring area. An incident means to which light is incident, a determination means for determining the presence or absence of a fire based on the detection target light incident by the incident means, and the incident means to be swiveled around a first turning axis. By rotating the first scanning driving means for scanning the monitoring area in the first scanning direction and the incident means around a second turning axis different from the first turning axis, the monitoring area is obtained. A second scanning driving means for scanning in a second scanning direction different from the first scanning direction, and either the first scanning driving means or the second scanning driving means is continuously used. It is provided with a drive control means for controlling the first scan drive means or the second scan drive means so as to drive the other in a quasi-continuous manner.

The fire detection device according to claim 2 drives each of the first scanning drive means and the second scanning drive means continuously, quasi-continuously, or intermittently in the fire detection device according to claim 1. It is a quasi-continuous turning step that is executed a plurality of times when the first scanning driving means or the second scanning driving means is driven quasi-continuously, comprising the driving control means for controlling the first scanning. The stop time of the quasi-continuous turning step for turning and stopping the scanning drive means or the second scanning drive means is executed a plurality of times when the first scanning drive means or the second scanning drive means is intermittently driven. The intermittent turning step is shorter than the stop time of the intermittent turning step for turning and turning and stopping the first scanning drive means or the second scanning drive means.

The fire detection device according to claim 3 has a turning angle acquired by a predetermined method in the fire detecting device according to claim 2, and is around the first turning axis or the second turning axis of the incident means. A determination means for determining the number of steps of the quasi-continuous turning step is provided based on the turning angle of the above and the turning time obtained by a predetermined method, which is the turning time required to turn the turning angle.

The fire detection device according to claim 4 is the fire detection device according to claim 3, wherein the determination means determines the number of steps of the quasi-continuous turning step based on the determination result of the determination means.

The fire detection device according to claim 5 is the fire detection device according to any one of claims 1 to 4, wherein the position of the fire is determined based on the detection target light incidented by the incident means. A specific means for specifying and a notification means for notifying the position of the fire specified by the specific means are provided.

The fire detection device according to claim 6 is a correction for correcting the position of the fire specified by the specific means based on the correction information acquired by a predetermined method in the fire detection device according to claim 5. A means is provided, and the notification means notifies the position of the fire corrected by the correction means.

The fire detection device according to claim 7 is the fire detection device according to claim 6, wherein the correction information is correction information corresponding to continuous driving of the first scanning drive means or the second scanning drive means. It includes a certain continuous correction information and quasi-continuous correction information which is correction information corresponding to the quasi-continuous drive of the first scan drive means or the second scan drive means.

The fire detection device according to claim 8 is the fire detection device according to claim 6, wherein the correction information is correction information corresponding to a state before the monitoring area is dynamically changed. The correction information and the post-change correction information which is the correction information corresponding to the state after the monitoring area is dynamically changed are included.

The fire detection device according to claim 9 is the fire detection device according to any one of claims 1 to 8, until it is determined that the drive control means has detected the fire by the determination means. After controlling to drive each of the first scanning driving means and the second scanning driving means either continuously or quasi-continuously, and determining that the fire has been detected by the determining means. , Each of the first scanning driving means and the second scanning driving means is controlled to be driven continuously, quasi-continuously, or intermittently.

The fire detection device according to claim 10 is the fire detection device according to any one of claims 1 to 9, wherein the drive control means is used until a predetermined operation is accepted or a predetermined time arrives. After controlling each of the first scanning driving means and the second scanning driving means to be driven either continuously or quasi-continuously, after the predetermined operation is accepted or after the predetermined time has arrived, the predetermined operation is received. Each of the first scanning driving means and the second scanning driving means is controlled to be driven continuously, quasi-continuously, or intermittently.

According to the fire detection device according to claim 1, a first scanning driving means for scanning the monitoring area in the first scanning direction by turning the incident means around a first turning axis, and an incident means. The second scanning driving means for scanning the monitoring area in the second scanning direction and either the first scanning driving means or the second scanning driving means are continuously connected by turning the second scanning axis around the second turning axis. The first scanning driving means and the second scanning driving means are provided with a driving control means for controlling the driving of the first scanning driving means or the second scanning driving means so as to drive the other in a quasi-continuous manner. By continuously or quasi-continuously driving each of the scanning driving means, scanning in the first scanning direction and scanning in the second scanning direction can be performed, and the first scanning driving means or the second scanning driving means can be intermittently driven. It is possible to make the incident means less likely to vibrate during scanning in the first scanning direction or during scanning in the second scanning direction, as compared with the case of driving the incident means. Therefore, at least the vibration noise generated by the vibration of the incident means can be reduced, so that the usability of the fire detection device can be improved.

According to the fire detection device according to claim 2, the stop time of the quasi-continuous turning step executed a plurality of times when the first scanning driving means or the second scanning driving means is driven quasi-continuously is set as the first scanning. Since it is shorter than the stop time of the intermittent turning step executed a plurality of times when the driving means or the second scanning driving means is intermittently driven, the first scanning driving means or the second scanning driving means is intermittently driven. Compared with the case, at least the incident means can be made less likely to vibrate during scanning in the first scanning direction or during scanning in the second scanning direction, and at least the vibration noise generated by the vibration of the incident means can be reduced.

According to the fire detection device according to claim 3, the quasi-continuous turning step is based on the turning angle around the first turning axis or the second turning axis of the incident means and the turning time required to turn the turning angle. Since the determination means for determining the number of steps is provided, the number of steps of the quasi-continuous turning step regarding scanning in the first scanning direction can be easily determined, and the usability of the fire detection device can be further improved.

According to the fire detection device according to claim 4, since the determining means determines the number of steps of the quasi-continuous turning step based on the determination result of the determining means, the quasi-continuous turning step according to the situation of the monitoring area is determined. The number of steps can be determined. Therefore, for example, by making the number of steps of the quasi-continuous turning step when a fire is detected smaller than the number of steps of the quasi-continuous turning step when no fire is detected, the presence or absence of a fire can be accurately detected. ..

According to the fire detection device according to claim 5, the specific means for specifying the position of the fire and the position of the fire specified by the specific means are notified based on the detection target light incidented by the incident means. Since it is equipped with a notification means for the purpose, the position of the fire specified by the specific means can be notified to the external device (for example, the position where the fire broke out in the stadium or the exhibition hall can be clearly determined. It can be notified), and the convenience of the user in detecting a fire can be improved.

According to the fire detection device according to claim 6, a correction means for correcting the position of the fire specified by the specific means is provided based on the correction information acquired by the predetermined method, and the notification means is used as the correction means. Since the position of the corrected fire is notified, the position of the fire corrected by the correction means can be notified, and the convenience of the user in detecting the fire can be further improved.

According to the fire detection device according to claim 7, the correction information includes continuous correction information corresponding to continuous driving of the first scanning driving means or the second scanning driving means, and the first scanning driving means or the second scanning. Since the quasi-continuous correction information corresponding to the quasi-continuous correction information of the drive means is included, the position of the fire is corrected based on the correction information according to the drive state of the first scan drive means or the second scan drive means. It is possible to identify the location of the fire with high accuracy.

According to the fire detection device according to claim 8, the correction information corresponds to the pre-change correction information corresponding to the state before the monitoring area is dynamically changed and the state after the monitoring area is dynamically changed. Since the post-change correction information is included, the position of the fire can be corrected based on the correction information according to the state of the monitoring area, and the position of the fire can be specified with high accuracy.

According to the fire detection device according to claim 9, the drive control means can continuously or quasi-continuously drive the first scanning drive means or the second scanning drive means until a fire is detected. Scanning in one scanning direction or scanning in a second scanning direction can be performed silently. Further, the drive control means can intermittently drive the first scan drive means or the second scan drive means after the fire is detected, and the fire can be detected in the scan in the first scan direction and the scan in the second scan direction. The presence or absence can be detected relatively accurately. Therefore, the usability of the fire detection device can be further improved.

According to the fire detection device according to claim 10, the drive control means continuously or quasi-continuously performs the first scan drive means or the second scan drive means until a predetermined operation is accepted or a predetermined time arrives. It can be driven, and scanning in the first scanning direction or scanning in the second scanning direction can be performed silently. Further, the drive control means can intermittently drive the first scan drive means or the second scan drive means after the predetermined operation is received or after the predetermined time has arrived, and the scan in the first scan direction and the second scan can be performed. The presence or absence of a fire can be detected relatively accurately by scanning in two scanning directions. Therefore, the usability of the fire detection device can be further improved.

It is a figure which conceptually shows the fire extinguishing system which concerns on embodiment. It is a figure which shows the fire detection apparatus (partly not shown), (a) is a perspective view, and (b) is a front view which shows the rotation state of a rotary mirror. It is a figure which shows the scanning range of a fire detection apparatus. It is a block diagram which showed the electric composition of a fire detection apparatus. It is a figure which shows the structural example of the correction table. It is a flowchart of the fire detection process which concerns on embodiment. It is a flowchart of the initial setting process. It is a figure which shows the verification result, the horizontal axis shows the amount of movement of the center position of an instantaneous visual field, and the vertical axis shows the floor surface distance.

Hereinafter, embodiments of the fire detection device according to the present invention will be described in detail with reference to the drawings. First, [I] the basic concept of the embodiment will be described, then [II] the specific contents of the embodiment will be described, and finally, [III] a modification to the embodiment will be described. However, the present invention is not limited to the embodiments.

[I] Basic concept of the embodiment First, the basic concept of the embodiment will be described. Embodiments typically relate to a fire detection device for detecting and notifying a fire in a monitoring area.

Here, in the embodiment, the "fire detection device" is a device that detects and notifies a fire by optically scanning the monitoring area, and is, for example, an optical scanning fire detector or a scanning type. It is a concept that includes fire alarms and the like. Further, the "monitoring area" is an area to be monitored, and is a concept including, for example, an area inside the building, an area outside the building, and the like. The term "building" is arbitrary in its specific structure and type, but is a concept including, for example, a detached house, an apartment house such as an apartment or a condominium, an office building, an event facility, a commercial facility, and a public facility. Is. Further, "notifying" is a concept including, for example, outputting predetermined information to an external device, displaying or outputting predetermined information via an output means (display means or voice output means), and the like. be.

Further, scanning of the fire detection device is a concept including scanning in the first scanning direction and scanning in a second scanning direction different from the first scanning direction, and in the embodiment, scanning in the first scanning direction is performed in the horizontal direction. The scan in the second scan direction will be described as a scan in the vertical direction. Further, the method of controlling the horizontal scanning motor described later in this horizontal scanning is a concept including controlling the horizontal scanning motor described later to be driven continuously or quasi-continuously, but in the embodiment, it is a concept. , The following will be described as controlling the horizontal scanning motor to be driven semi-continuously. Here, the "quasi-continuous drive" means an intermittent drive, but a substantially continuous drive. Further, the control method of the vertical scanning motor described later in this vertical scanning is a concept including controlling the vertical scanning motor described later to be driven continuously or quasi-continuously, but in the embodiment, it is a concept. , The following will be described as controlling the vertical scanning motor to be continuously driven.

Hereinafter, in the embodiment, when the "fire detection device" is an "optical scanning fire detector" and the "monitoring area" is an "area inside an event facility (for example, a dome stadium)". Will be explained.

[II] Specific contents of the embodiment Next, the specific contents of the embodiment will be described.

(composition)
First, the configuration of the fire extinguishing system to which the fire detection device according to the embodiment is applied will be described. FIG. 1 is a diagram conceptually showing a fire extinguishing system according to an embodiment. In the following description, the X direction in FIG. 1 is the left-right direction of the fire extinguishing system (+ X direction is the left direction of the fire extinguishing system, -X direction is the right direction of the fire extinguishing system), and the Y direction in FIG. 1 is the front-back direction of the fire extinguishing system (+ Y). The direction is the front direction of the fire extinguishing system, the -Y direction is the rear direction of the fire extinguishing system), the Z direction in FIG. It is called.

The fire extinguishing system 1 is a system for extinguishing a fire generated in the monitoring area 2 of FIG. 3, which will be described later, and as shown in FIG. 1, a water cannon 11, an operating device 12, an on-off valve 13, and a water discharge control device 14 , The air compressor 15, the pump equipment 16, the pump control device 17, the receiver 18, and the fire detection device 20. More specifically, one receiver 18 is provided, and for this one receiver 18, a water cannon 11, an operating device 12, an on-off valve 13, a water discharge control device 14, an air compressor 15, and a pump facility 16 are provided. , The pump control device 17, and the fire detection device 20 are each provided at least one or more. However, the configuration of the fire extinguishing system 1 is not limited to the configuration described above, and for example, for this one receiver 18, in addition to these devices, devices other than these devices (for example, a distribution board). , Relay device, lighting device, etc.), the receiver 18 may also control the other system by providing at least one other system. Hereinafter, in the embodiment, in the fire extinguishing system 1, each of a plurality of water cannons 11, an operating device 12, an on-off valve 13, a water discharge control device 14, and a fire detection device 20 are provided for one receiver 18. In addition to being provided, it is assumed that one each of the air compressor 15, the pump equipment 16, and the pump control device 17 is provided.

Further, the installation position of the components of the fire extinguishing system 1 is arbitrary, but in the embodiment, the water cannon 11, the operation device 12, and the fire detection device 20 are installed inside the building, for example, water discharge. The gun 11 and the fire detection device 20 are installed at positions that are difficult for people in the building to touch, and the operation device 12 is installed at a position that can be operated by people in the building. Further, the on-off valve 13, the water discharge control device 14, the air compressor 15, the pump equipment 16, the pump control device 17, and the receiver 18 are installed inside or outside the building, and in particular, the water discharge control device 14 and the pump control. The device 17 and the receiver 18 are installed at positions that can be operated by the building manager (user).

Further, the connection form of each device is set as shown below. That is, as shown in FIG. 1, the receiver 18 is electrically connected to each of the operation device 12, the water discharge control device 14, the pump control device 17, and the fire detection device 20 via the wiring 3. Further, the water discharge control device 14 is electrically connected to the water discharge gun 11 and the on-off valve 13 via the wiring 3, and the pump control device 17 is electrically connected to the pump equipment 16 via the wiring 3. There is. Further, the pump equipment 16 is connected to the water cannon 11 via the on-off valve 13 and the water distribution pipe 4 (in addition, among the water distribution pipes 4, the water distribution pipe 4 connecting the water cannon 11 and the on-off valve 13 is connected. The air compressor 15 is connected to the water cannon 11 via the air pipe 5 (which is connected to the drain tank (not shown) via the drain pipe 6). Through such a connection, communication can be performed between the receiver 18 and each of the operating device 12, the on-off valve 13, the water discharge control device 14, the pump control device 17, the fire detection device 20, and the receiver 18. At the same time, power can be supplied from the receiver 18 to each of the operation device 12, the on-off valve 13, the water discharge control device 14, the pump control device 17, the fire detection device 20, and the receiver 18. Further, the pump equipment 16 can supply fire extinguishing water to the water cannon 11, and the air compressor 15 can supply air to the water cannon 11. The term "fire extinguishing water" means a liquid used for extinguishing a fire, and rainwater or tap water stored in the water storage tank of the pump equipment 16 described later, or adding fire extinguishing chemicals to these rainwater or tap water. It is a concept that includes liquids and the like.

(Composition-Water cannon)
Next, the configuration of the water cannon 11 will be described. The water cannon 11 is a fire extinguishing means for extinguishing a fire by discharging fire extinguishing water. The water cannon 11 is configured by using, for example, a known water cannon, and is provided on the upper part (or the ceiling part (not shown)) of the wall part (not shown) of the building, and is provided on the wall part (or the wall part (not shown)). It is fixed so that it can swivel horizontally or vertically with respect to the gantry (not shown) provided on the ceiling).

(Configuration-Operating device)
Next, the configuration of the operating device 12 will be described. The operating device 12 is an operating means for operating the water cannon 11. The operating device 12 is configured by using, for example, a known wired operating device or the like, and has a water discharge start button for starting water discharge from the water cannon 11, a water discharge stop button for stopping water discharge from the water cannon 11, and a water cannon 11. It is provided with a turning start button for starting the turning of the water cannon 11 and a turning stop button for stopping the turning of the water cannon 11 (both are not shown). When the water discharge start button, the water discharge stop button, the turning start button, or the turning stop button is pressed by a person in the building, the operation signal corresponding to the pressed button (that is, the water discharge start signal, the water discharge stop signal, etc.) By outputting a turning start signal (turning stop signal, turning stop signal) to the water discharge control device 14, the water discharge control device 14 can start or stop the water discharge of the water cannon 11 or start or stop the turn of the water cannon 11. ..

(Structure-on-off valve)
Next, the configuration of the on-off valve 13 will be described. The on-off valve 13 is a valve for closing the water distribution pipe 4 when it is desired to stop the water discharge when the water cannon 11 is operated or when maintenance work is performed on the water cannon 11, and the on-off valve 13 is, for example, a known electric on-off valve or the like. It is configured using.

(Configuration-Water discharge control device)
Next, the configuration of the water discharge control device 14 will be described. The water discharge control device 14 is a device for controlling the water discharge gun 11 and the on-off valve 13. The water discharge control device 14 is configured by using, for example, a known control device for a water cannon, and includes an operation unit, a communication unit, an output unit, a power supply unit, a control unit, and a storage unit (all of which are shown in the figure). omit).

Of these, the operation unit is an operation means for receiving an operation input to the water discharge control device 14. The communication unit is a communication means for communicating with each of the water cannon 11, the on-off valve 13, the operating device 12, and the receiver 18. The output unit is an output means that outputs various information based on the control of the control unit, and is configured by using, for example, a known display means such as an LED, a known audio output means such as a speaker, or the like (note that the output unit). The same applies to the output unit of the pump control device 17 described later and the output unit of the receiver 18 described later). The power supply unit is a power supply means for supplying the electric power supplied from the receiver 18 to each unit of the water cannon 11, the on-off valve 13, and the water discharge control device 14. The control unit is a control means for controlling the water discharge control device 14. Specifically, this control unit includes a CPU, various programs that are interpreted and executed on the CPU (including a basic control program such as an OS, and an application program that is started on the OS and realizes a specific function) and a program. It is a computer configured to include an internal memory such as a RAM for storing various data (note that the control unit of the pump control device 17 described later, the control unit of the receiver 18 described later, and the fire detection device 20 described above. The same applies to the control unit 34). The storage unit is a storage means for storing programs and various data necessary for the operation of the water discharge control device 14. This storage unit is configured by using a rewritable recording medium, and a non-volatile recording medium such as a flash memory can be used (note that the storage unit of the pump control device 17 described later and the storage unit 18 described later) can be used. The same applies to the unit and the storage unit 35 of the fire detection device 20).

(Composition-Air compressor)
Next, the configuration of the air compressor 15 will be described. The air compressor 15 is an air supply means for supplying outside air toward the water cannon 11, and is configured by using, for example, a known air compressor.

(Configuration-Pump equipment)
Next, the configuration of the pump equipment 16 will be described. The pump equipment 16 is a supply means for supplying fire extinguishing water to the water cannon 11. The pump equipment 16 is configured by using, for example, a known fire extinguishing pump equipment or the like, and has a water storage tank for storing fire extinguishing water and a pump for supplying fire extinguishing water in the water storage tank toward the water cannon 11. (Neither is shown).

(Configuration-Pump control device)
Next, the configuration of the pump control device 17 will be described. The pump control device 17 is configured by using, for example, a known control device for pump equipment, and includes an operation unit, a communication unit, an output unit, a power supply unit, a control unit, and a storage unit (all of which are not shown). ).

Of these, the operation unit is an operation means for receiving an operation input to the pump control device 17. The communication unit is a communication means for communicating with each of the pump equipment 16 and the receiver 18. The output unit is an output means that outputs various information based on the control of the control unit. The power supply unit is a power supply means for supplying the electric power supplied from the receiver 18 to each unit of the pump equipment 16 and the pump control device 17. The control unit is a control means for controlling the pump control device 17. The storage unit is a storage unit that stores programs and various data necessary for the operation of the pump control device 17.

(Configuration-Receiver)
Next, the configuration of the receiver 18 will be described. The receiver 18 is a device that performs predetermined processing based on a signal received from the operation device 12, the water discharge control device 14, the pump control device 17, or the fire detection device 20. The receiver 18 is configured by using, for example, a known disaster prevention receiver, and includes an operation unit, a communication unit, a transfer signal transmission unit, an output unit, a power supply unit, a control unit, and a storage unit. (Both are not shown).

Of these, the operation unit is an operation means for receiving an operation input to the receiver 18. The communication unit is a communication means for communicating with each of the operation device 12, the water discharge control device 14, the pump control device 17, and the fire detection device 20. The transfer signal transmission unit transmits a signal including fire information indicating a fire notification (hereinafter referred to as “transfer signal”) to the outside of the fire extinguishing system 1 via a notification device (not shown). The output unit is an output means that outputs various information based on the control of the control unit. The power supply unit is a power supply means for supplying the electric power supplied from the commercial power source to the operation device 12, the water discharge control device 14, the pump control device 17, the fire detection device 20, and each part of the receiver 18. The control unit is a control means for controlling the receiver 18. The storage unit is a storage means for storing programs and various data necessary for the operation of the receiver 18.

(Configuration-Fire detection device)
Next, the configuration of the fire detection device 20 will be described. 2A and 2B are views showing a fire detection device 20 (partially omitted), FIG. 2A is a perspective view, and FIG. 2B is a front view showing a rotation state of a rotary mirror 22 described later. FIG. 3 is a diagram showing a scanning range of the fire detection device 20. FIG. 4 is a block diagram showing the electrical configuration of the fire detection device 20. The fire detection device 20 is a device that detects and notifies a fire by optically scanning the monitoring area 2 in the horizontal direction and scanning in the vertical direction. The fire detection device 20 is provided at the position of the upper part (or the ceiling part (not shown) of the wall portion of the building and in the vicinity of the water cannon 11. Specifically, as shown in FIG. 3, the position is diagonally above the monitoring area 2, and the direction in which the fire detection device 20 starts scanning in the vertical direction coincides with the 0 ° direction in the monitoring area 2. Moreover, the direction in which the vertical scanning of the fire detection device 20 is completed is arranged at a position corresponding to the 90 ° direction in the monitoring area 2. Further, as shown in FIG. 2A, the fire detection device 20 includes a rotating mirror 22, an objective lens 23, a reflecting mirror 24, a slit portion 25, and a collection inside a housing 21 provided inside the building. The optical lens 26, the detection element 27, the horizontal scanning motor 28, the vertical scanning motor 29, and the control unit 30 are integrally housed and configured.

(Configuration-Fire detection device-Housing)
The housing 21 is the basic structure of the fire detection device 20, and is a rotary mirror 22, an objective lens 23, a reflector 24, a slit portion 25, a condenser lens 26, a detection element 27, a horizontal scanning motor 28, and a vertical scanning motor 29. , And a protective means for protecting the control unit 30 from the outside. The housing 21 is a hollow substantially cylindrical body made of, for example, a metal material, and as shown in FIG. 2A, the rotating mirror 22, the objective lens 23, the reflecting mirror 24, the slit portion 25, and the like. A swivel portion 21a accommodating the condenser lens 26, the detection element 27, and the vertical scanning motor 29, and a base portion 21b arranged above the swivel portion 21a, accommodating the horizontal scanning motor 28 and the control unit 30. It is provided with a base portion 21b. Further, the swivel portion 21a is rotatably attached to the base portion 21b in a horizontal direction, and the base portion 21b is attached to the wall portion with a fixture or the like.

(Configuration-Fire detector-Rotating mirror)
The rotating mirror 22 is an incident means to which the light to be detected is incident from the monitoring area 2. Here, the "detection target light" is light to be detected in order to detect a fire, and is a concept including, for example, infrared light. Further, the rotary mirror 22 is configured by using, for example, a known double-sided mirror or the like, and as shown in FIG. 2A, a fixture or the like is attached to the second swivel shaft 29b of the vertical scanning motor 29 described later. Is fixed by. With such a configuration, as shown in FIG. 2B, the rotating mirror 22 rotates 45 ° in a vertical direction to perform vertical scanning of the fire detection device 20 in the range of 0 ° to 90 °. Can be done.

(Configuration-Fire detector-Objective lens)
The objective lens 23 is a lens that collects the light to be detected reflected by the rotating mirror 22. The objective lens 23 is configured by using, for example, a known objective lens or the like, and as shown in FIG. 2A, is provided at a position where the detection target light reflected from the rotating mirror 22 can be incident. , Is fixed to the swivel portion 21a by a fixture or the like.

(Configuration-Fire detector-Reflector)
The reflecting mirror 24 is a mirror for reflecting the light to be detected collected by the objective lens 23 toward the slit portion 25. The reflecting mirror 24 is configured by using, for example, a known single-sided mirror or the like, and as shown in FIG. 2A, the reflecting mirror 24 is provided at a position where the light to be detected focused by the objective lens 23 can be incident. It is fixed to the swivel portion 21a by a fixture or the like.

(Structure-Fire detection device-Slit part)
The slit portion 25 is a member for setting the instantaneous visual field SS of the fire detection device 20. Here, the "instantaneous field of view SS" means a monitoring field of view when the rotating mirror 22 is assumed to be stationary. The slit portion 25 is, for example, a metal plate-like body having an opening 25a, and as shown in FIG. 2A, the slit portion 25 is provided at a position where the light to be detected reflected by the reflector 24 can be incident. It is fixed to the swivel portion 21a by a fixture or the like. The shape and size of the opening 25a of the slit portion 25 are arbitrary, but in the embodiment, the instantaneous visual field SS in the horizontal direction SS = 1.0 ° and the instantaneous visual field SS in the vertical direction SS = 0.43 °. It is set in a rectangular shape.

(Configuration-Fire detector-Condensing lens)
The condensing lens 26 is a lens that condenses the light to be detected that has passed through the opening 25a of the slit portion 25. The condenser lens 26 is configured by using, for example, a known condenser lens, and as shown in FIG. 2A, the light to be detected that has passed through the opening 25a of the slit portion 25 can be incident. It is provided and is fixed to the swivel portion 21a by a fixture or the like.

(Configuration-Fire detection device-Detection element)
The detection element 27 is an element that receives the light to be detected condensed by the condenser lens 26. The detection element 27 is configured by using, for example, a known detection element (for example, an infrared detection element or the like), and as shown in FIG. 2A, the detection is condensed by the condenser lens 26. It is provided at a position where the target light can be incident, and is fixed to the swivel portion 21a by a fixture or the like.

(Configuration-Fire detection device-Horizontal scanning motor)
The horizontal scanning motor 28 is a first scanning driving means for scanning the monitoring area 2 in the horizontal direction (first scanning direction) by rotating the rotary mirror 22 around the first swivel shaft 28b described later. , As shown in FIG. 2A, the horizontal drive unit 28a and the first swivel shaft 28b are provided.

Of these, the horizontal drive unit 28a is for rotationally driving the first swivel shaft 28b, and is configured by using, for example, a known motor (for example, a stepping motor or the like) with respect to the base unit 21b. It is fixed by a fixture or the like. Further, the first swivel shaft 28b is a shaft member for swiveling the swivel portion 21a accommodating the rotary mirror 22 in a horizontal direction. The first swivel shaft 28b is configured by using, for example, a known long shaft material, and as shown in FIG. 2A, the longitudinal direction of the first swivel shaft 28b is along the vertical direction. They are arranged and are connected to the horizontal drive portion 28a and the connecting member connected to the swivel portion 21a by a fixture or the like.

(Configuration-Fire detection device-Vertical scanning motor)
The vertical scanning motor 29 is a second scanning driving means for scanning in the vertical direction (second scanning direction) with respect to the monitoring region 2 by rotating the rotary mirror 22 around the second turning shaft 29b described later. .. As shown in FIG. 2A, the vertical scanning motor 29 is provided in the vicinity of the rotary mirror 22 and includes a vertical drive unit 29a and a second swivel shaft 29b.

Of these, the vertical drive unit 29a is for rotationally driving the first swivel shaft 28b, and is configured by using, for example, a known motor (for example, a DC brushless motor or the like). Further, the second swivel shaft 29b is a shaft member for swiveling the vertical drive unit 29a in a vertical direction. The second swivel shaft 29b is configured by using, for example, a known long shaft or the like, and as shown in FIG. 2A, the second swivel shaft 29b is arranged so that the longitudinal direction of the second swivel shaft 29b is along the horizontal direction. The vertical drive unit 29a and the rotary mirror 22 are connected to each other by a fixture or the like.

(Configuration-Fire detection device-Control unit)
The control unit 30 is a unit for controlling the fire detection device 20, and as shown in FIG. 4, includes an operation unit 31, a communication unit 32, a power supply unit 33, a control unit 34, and a storage unit 35. ing.

(Configuration-Fire detection device-Control unit-Operation unit, communication unit, power supply unit)
The operation unit 31 is an operation means for receiving an operation input to the fire detection device 20. The communication unit 32 is a communication means for communicating with the receiver 18. The power supply unit 33 is a power supply means for supplying the electric power supplied from the receiver 18 to each unit of the fire detection device 20.

(Configuration-Fire detection device-Control unit-Control unit)
The control unit 34 is a control means for controlling the fire detection device 20, and as shown in FIG. 4, functionally conceptually, the determination unit 34a, the drive control unit 34b, the determination unit 34c, the specific unit 34d, and the notification unit 34e. And a correction unit 34f is provided.

The determination unit 34a is a determination unit for determining the presence or absence of a fire based on the detection target light incident on the rotating mirror 22.

The drive control unit 34b is a drive control means for controlling each of the horizontal scanning motor 28 and the vertical scanning motor 29 to be driven continuously or quasi-continuously.

The determination unit 34c is a swivel angle acquired by a predetermined method, which is a swivel angle around the first swivel shaft 28b or the second swivel shaft 29b of the rotary mirror 22 and a swivel time acquired by the predetermined method. It is a determination means for determining the number of steps of the quasi-continuous turning step based on the turning time required to turn the turning angle. Here, the "quasi-continuous turning step" is a step executed a plurality of times when the horizontal scanning motor 28 or the vertical scanning motor 29 is driven semi-continuously, and is a step of the horizontal scanning motor 28 or the vertical scanning motor 29. It means a step of turning and turning and stopping. Further, the setting of the stop time of the quasi-continuous turning step is arbitrary, but in the embodiment, it is set shorter than the stop time of the intermittent turning step, and as an example, the stop time of the intermittent turning step is 10 minutes. It may be set to about 1 of. The "intermittent turning step" is a case where the drive control unit 34b drives each of the horizontal scanning motor 28 and the vertical scanning motor 29 continuously, quasi-continuously, or intermittently, and the horizontal scanning motor 28 or the vertical scanning motor 28 or the vertical scanning motor 28. It is a step executed a plurality of times when the scanning motor 29 is intermittently driven, and means a step of turning and stopping the turning of the horizontal scanning motor 28 or the vertical scanning motor 29. With such a setting, the stop time of the quasi-continuous turning step can be made shorter than the stop time of the intermittent turning step, and the horizontal scanning motor 28 or the vertical scanning motor 29 is being scanned in the horizontal direction as compared with the case where the horizontal scanning motor 28 or the vertical scanning motor 29 is intermittently driven. The swivel portion 21a and the rotating mirror 22 can be made difficult to vibrate (or during scanning in the vertical direction), and the vibration noise of the swivel portion 21a and the rotating mirror 22 can be reduced.

The specific unit 34d is a specific means for specifying the position of the fire based on the light to be detected incident on the rotating mirror 22.

The notification unit 34e is a notification means for notifying the position of the fire specified by the specific unit 34d.

The correction unit 34f is a correction means for correcting the position of the fire specified by the specific unit 34d based on the correction information described later acquired by a predetermined method. The details of the processing executed by the control unit 34 will be described later.

(Configuration-Fire detection device-Control unit-Storage unit)
The storage unit 35 is a storage means for storing programs and various data necessary for the operation of the fire detection device 20. Further, as shown in FIG. 4, the storage unit 35 includes a correction table 35a.

(Configuration-Fire detection device-Control unit-Storage unit-Correction table)
The correction table 35a is a correction information storage means for storing correction information. Here, the "correction information" is information for correcting the position of the fire specified by the specific unit 34d.

FIG. 5 is a diagram showing a configuration example of the correction table 35a. As shown in FIG. 5, the correction table 35a is configured by relating the item “floor surface distance” and the item “correction value” and the information corresponding to each item to each other. Here, the information corresponding to the item "floor surface distance" is the floor surface distance information indicating the horizontal distance from the fire detection device 20 to the floor surface (hereinafter referred to as "floor surface distance"), for example. The floor distances shown in FIG. 5, such as "0 m", "50 m", "100 m", and "200 m", correspond to each other. Further, the information corresponding to the item "correction value" is correction information, for example, "0 mm", "-24 mm", "-12 mm", "12 mm", etc., which are the correction values (correction distance) shown in FIG. Corresponds to.

(Fire detection processing)
Next, the fire detection process executed by the fire detection device 20 configured as described above will be described. FIG. 6 is a flowchart of a fire detection process according to an embodiment (steps are abbreviated as “S” in the following description of each process). The fire detection process is generally a process of detecting a fire by optically scanning the monitoring area 2 in the horizontal direction and scanning in the vertical direction. The timing for executing this fire detection process is arbitrary, but in the embodiment, the fire detection device 20 will be described as being started after the power is turned on.

When the fire detection process is activated, as shown in FIG. 6, the control unit 34 of the fire detection device 20 in SA1 activates the initial setting process.

(Fire detection process-initial setting process)
Next, the initial setting process of SA1 in FIG. 6 will be described. FIG. 7 is a flowchart of the initial setting process. The initial setting process is a process for performing initial settings related to the fire detection process.

As shown in FIG. 7, in SB1, the control unit 34 of the fire detection device 20 has a swivel angle in horizontal scanning (that is, a swivel angle around the first swivel shaft 28b of the rotary mirror 22. More specifically, it swivels. It is determined whether or not the turning angle corresponding to the turning angle) and the turning time corresponding to the turning angle have been acquired. The method of acquiring the turning angle and the turning time is arbitrary, but for example, when the information indicating the turning angle and the turning time is input by the administrator via the operation unit 31 (or received from an external device). , The input information (or the received information) is set as the turning angle and turning time to be acquired. Then, the control unit 34 of the fire detection device 20 waits until the turning angle and turning time are acquired (SB1, No), and when the turning angle and turning time are acquired (SB1, Yes), SB2 Move to.

In SB2, the determination unit 34c of the fire detection device 20 determines the number of steps of the quasi-continuous turning step for horizontal scanning based on the turning angle and turning time acquired in SB1. Here, the method for determining the number of steps of the quasi-continuous turning step is arbitrary, but for example, the following equation (1) to the following equation (3) may be used for determination.
Number of steps of quasi-continuous turning step = turning angle acquired by SB1 / turning angle per step ... Equation (1)
Turning time acquired in SB1 <Allowable turning time (for example, 60 sec, etc.) ... Equation (2)
Swing time acquired by SB1 / Swing angle acquired by SB1 <Minimum swivel time per 1 ° swivel angle in the horizontal scanning motor 28 (for example, 50 msec, etc.) ... Equation (3)

In SB3, the control unit 34 of the fire detection device 20 determines whether or not an instruction for correcting the position of the fire specified by SA5, which will be described later, has been received via the operation unit 31. Then, when the control unit 34 of the fire detection device 20 receives the above instruction (SB3, Yes), after setting the instruction flag indicating the instruction in the SB4 (this instruction flag is not set). It is an initial value and is stored in the storage unit 35), and the initial setting process is terminated. On the other hand, if the above instruction is not accepted (SB3, No), the initial setting process is terminated without setting the above instruction flag.

Returning to FIG. 6, in SA2, the control unit 34 of the fire detection device 20 determines whether or not the timing for detecting the fire (hereinafter referred to as “detection timing”) has arrived. The method for determining whether or not this detection timing has arrived is arbitrary, but for example, it is determined based on whether or not a predetermined operation has been accepted via the operation unit 31, or after the processing of SA1 is completed. Judgment is made based on whether or not a predetermined time has elapsed. Here, when the predetermined operation is accepted or when the predetermined time has elapsed, it is determined that the detection timing has arrived, and when the predetermined operation is not accepted or the predetermined time has not elapsed. Determines that the detection timing has not arrived. Then, the control unit 34 of the fire detection device 20 waits until the detection timing arrives (SA2, No), and when it is determined that the detection timing has arrived (SA2, Yes), the control unit 34 shifts to SA3.

In SA3, the drive control unit 34b of the fire detection device 20 controls the horizontal scanning motor 28 and the vertical scanning motor 29 to drive each of the horizontal scanning motor 28 and the vertical scanning motor 29 continuously or quasi-continuously, thereby performing horizontal scanning and vertical scanning. Perform a scan.

Here, the method of executing the horizontal scanning is arbitrary, but for example, the horizontal scanning motor 28 is quasi-based on the turning angle and turning time acquired by SB1 and the number of steps set by SB2. By controlling the chassis 21 to be driven continuously, the swivel portion 21a of the housing 21 is swiveled quasi-continuously in a horizontal direction.

Further, the method of executing the scanning in the vertical direction is arbitrary, but for example, the continuous rotation specified from the swivel angle around the second swivel axis 29b of the rotary mirror 22 predetermined in the storage unit 35 and the predetermined resolution. By controlling the vertical scanning motor 29 to be continuously driven based on the number of steps of the turning step, the rotating mirror 22 is continuously swiveled in a vertical direction. Here, the "continuous turning step" is a step executed a plurality of times when the horizontal scanning motor 28 or the vertical scanning motor 29 is continuously driven, and only the turning of the horizontal scanning motor 28 or the vertical scanning motor 29 is performed. Means the steps to do. Further, an example of the setting when scanning in the vertical direction is as shown below, for example. That is, when the rotation speed of the vertical scanning motor 29 is 500 rpm, the time for one rotation (360 °) of the rotating mirror 22 = 60 sec / 500 = 120 msec is set. Further, when the turning angle around the second turning shaft 29b of the rotating mirror 22 composed of the double-sided mirror is 90 °, the time required for one side of the rotating mirror 22 to turn the turning angle = the rotating mirror 22. The time of one rotation of 1 × 45 ° / 360 ° = 120 × 45/360 = 15 msec is set. Further, in this case, when the rotary mirror 22 is swiveled with a resolution of a swivel angle of 0.1 °, the period per swivel angle of 0.1 ° = one side of the swivel mirror 22 is required to swivel the swivel angle. Time / continuous turning step = 15/900≈16.7 μsec is set.

In the SA4, the determination unit 34a of the fire detection device 20 determines the presence or absence of a fire based on the detection target light acquired from the detection element during the processing of the SA4 and received by the detection element. The method for determining the presence or absence of this fire is arbitrary, but for example, it is determined based on whether or not the amount of light to be detected received by the detection element is equal to or greater than the threshold value at predetermined timings, and the above threshold value is determined. If it is more than the above, it is determined that a fire has been detected, and if it is not equal to or more than the above threshold value, it is determined that a fire has not been detected. Regarding the predetermined timing, for example, the horizontal scanning is set at every 0.72 ° swivel angle, and the vertical scanning is set at every 0.1 ° swivel angle. Then, the determination unit 34a of the fire detection device 20 shifts to SA3 when it is determined that no fire has been detected (SA4, No), and when it is determined that a fire has been detected (SA4, Yes). Will move to SA5.

In SA5, the identification unit 34d of the fire detection device 20 identifies the position of the fire based on the detection target light acquired by SA4.

Here, the method of specifying the position of the fire is arbitrary, but for example, it may be specified as follows. In the following example, the information indicating the horizontal turning angle of the turning portion 21a, the information indicating the vertical turning angle of the rotating mirror 22, and the information indicating the coordinates of the fire position (hereinafter, "fire position information"). (Referred to as) and a fire position table (not shown) for storing floor surface distance information in association with each other will be described on the premise that the storage unit 35 is provided in advance.

That is, when the instruction flag is not set in the processing of SA1, first, the specific unit 34d of the fire detection device 20 rotates horizontally in the turning unit 21a at the timing when it is determined that the fire is detected by SA4. The turning angle and the vertical turning angle of the rotary mirror 22 are calculated. Then, the specific unit 34d of the fire detection device 20 extracts the fire position information corresponding to the above-calculated horizontal turning angle and vertical turning angle from the fire position information stored in the fire position table. , The coordinates of the extracted fire position information are specified as the position of the fire to be specified.

Further, when the instruction flag is set in the processing of SA1, first, the specific unit 34d of the fire detection device 20 fires from the fire position table as in the case where the instruction flag is not set in the processing of SA1. The position information is extracted, and the coordinates of the extracted fire position information are specified as the position of the temporary fire. Next, the correction unit 34f of the fire detection device 20 extracts the floor surface distance information corresponding to the extracted fire position information from the floor surface distance information stored in the fire position table. Next, the correction unit 34f of the fire detection device 20 extracts the correction information corresponding to the above-extracted floor surface distance information from the correction information stored in the correction table 35a. Next, the correction unit 34f of the fire detection device 20 adds the correction value of the extracted correction information to the floor distance of the extracted floor surface distance information. Then, the correction unit 34f of the fire detection device 20 has among the coordinates on a straight line passing through the coordinates of the fire detection device 20 stored in advance in the storage unit 35 and the coordinates of the position of the temporary fire specified above. The coordinates corresponding to the floor distance to which the above correction values are added are calculated, and the calculated coordinates are specified as the position of the fire to be specified.

In SA6, the notification unit 34e of the fire detection device 20 executes notification processing. Here, the "notification process" means a process of notifying the fact that a fire has been detected in SA4 and the position of the fire specified in SA5. Specifically, the notification unit 34e of the fire detection device 20 contains a signal including information indicating that a fire has been detected in SA4 and information indicating the position of the fire specified in SA5 (hereinafter, "fire signal"). ”) Is output toward the receiver 18. As a result, the fact that a fire has been detected and the position of the fire can be notified to an external device such as the receiver 18, and the convenience of the administrator in detecting the fire can be improved. Specifically, the control unit of the receiver 18 calculates the fire position coordinates and the like in the monitoring area based on the information indicating the position of the fire included in the fire signal input from the fire detection device 20. The water cannon 11 at the optimum position for extinguishing a fire is identified, and a signal instructing the water cannon 14 corresponding to the specified water cannon 11 to discharge water by the water cannon 11 is transmitted. The control unit of the corresponding water discharge control device 14 controls to discharge water by the specified water cannon 11 based on the information indicating the fire position coordinates included in the signal to be instructed received from the receiver 18. Is possible. In addition, the position of the fire corrected by the correction unit 34f can be notified, and the convenience of the administrator in detecting the fire can be further improved.

However, the process is not limited to the above-mentioned process, and other processes may be performed. For example, when the processing cycle of SA3 to SA7 is repeated a plurality of times before the end timing of SA7, which will be described later, is reached, a fire signal is received after it is determined that a fire has been detected in SA4 of a predetermined cycle. Although it is not output to 18, when a fire is detected more than a predetermined number of times in SA4 of the subsequent cycle and the same fire position or its vicinity position is specified more than once in SA5 after that. A fire signal may be output. By such a process, it is possible to prevent a fire from being erroneously detected, and it is possible to further improve the accuracy of fire detection.

In the SA7, the control unit 34 of the fire detection device 20 determines whether or not the timing for ending the fire detection process (hereinafter referred to as “end timing”) has arrived. The method for determining whether or not the end timing has arrived is arbitrary, but for example, it is determined based on whether or not a predetermined operation by the administrator has been performed via the operation unit 31, or from the receiver 18 or the like. Judgment is made based on whether or not the recovery signal has been received, and when the above-mentioned predetermined operation is performed or when the recovery signal is received, it is determined that the end timing has arrived, and the above-mentioned predetermined operation is not performed. If the recovery signal is not received, it is determined that the end timing has not arrived. Then, when it is determined that the end timing has not arrived (SA7, No), the control unit 34 of the fire detection device 20 shifts to SA3, and thereafter repeats the processing cycle from SA3 to SA7 in the same manner. On the other hand, when it is determined that the end timing has arrived (SA7, Yes), the fire detection process is terminated.

By such a fire detection process, horizontal scanning and vertical scanning can be performed by continuously or quasi-continuously driving each of the horizontal scanning motor 28 and the vertical scanning motor 29, and the horizontal scanning motor 28 can be performed. Alternatively, the swivel portion 21a and the rotating mirror 22 can be made less likely to vibrate during horizontal scanning or vertical scanning as compared with the case where the vertical scanning motor 29 is intermittently driven. Therefore, since the vibration noise of the swivel portion 21a and the rotary mirror 22 can be reduced, the usability of the fire detection device 20 can be improved.

(inspection result)
Next, the verification results performed by the applicant will be described. Here, the verification result of confirming the relationship between the instantaneous visual field and the floor surface distance when the horizontal scanning is performed semi-continuously and the vertical scanning is performed continuously will be described.

First, regarding the verification method for obtaining this verification result, it is assumed that horizontal scanning and vertical scanning are performed so as to satisfy the following requirements, and the center position of the instantaneous field of view of the fire detection device in that case is assumed. It is verified by calculating the amount of movement according to the floor distance. That is, for vertical scanning, scanning is performed at a rotation time of one rotation of the rotating mirror = 120 msec, and for horizontal scanning, scanning is performed at a rotation time of 60 msec in one step (0.72 °) of a quasi-continuous turning step. .. Further, while the horizontal scanning is rotated at a rotation time of 15 msec and the turning angle is 0.18 °, the vertical scanning is performed at a turning angle of 90 ° (continuous turning step = 900 steps). Further, while one step of the continuous turning step in the vertical scanning is performed (16.7 μsec), the turning angle of the horizontal scanning is set to 0.18 ° / 900 = 0.0002 °. Further, for example, at a point where the floor distance from the fire detection device having an installation height of 20 m = 150 m (a point where the vertical turning angle = 62.5 °), the horizontal position is adjusted as directly in front of the fire detection device. do.

Next, the details of the above verification result will be described. FIG. 8 is a diagram showing verification results, in which the horizontal axis represents the amount of movement of the center position of the instantaneous visual field, and the vertical axis represents the floor surface distance. Further, in FIG. 8, the above verification result is shown by a thick line, and the amount of movement of the instantaneous visual field when scanning in the horizontal direction is intermittently performed and scanning in the vertical direction is continuously performed is shown by a dotted line. As shown in FIG. 8, the center of the instantaneous visual field starts from the floor distance = 0.0 m. At this time, the fire detection device faces slightly to the left from the position directly in front, but the instantaneous field of view is directly below. Then, as the horizontal scanning and the vertical scanning were performed, the instantaneous visual field moved forward (leftward in FIG. 8). Further, by performing horizontal scanning and vertical scanning, the instantaneous visual field was moved to the left in FIG. 8 until the amount of movement of the center position of the instantaneous visual field was about -25 mm, and then alignment was performed. At the point (that is, the point where the floor distance = 150 m), the amount of movement of the center position of the instantaneous visual field = 0 mm, and then the instantaneous visual field moved to the right in FIG. Further, when the horizontal scanning and the vertical scanning were performed, the floor surface distance was 200 m, and the amount of movement of the center position of the instantaneous visual field was about +25 mm. Regarding the amount of instantaneous visual field movement when horizontal scanning is intermittently performed and vertical scanning is continuously performed, the detection target light received by the detection element while the horizontal scanning is stopped turning. Since the fire position is specified based on the above, the amount of movement of the center position of the instantaneous field of view is always 0 mm regardless of the length of the floor surface distance.

From the verification results shown in FIG. 8, when horizontal scanning and vertical scanning are performed so that the floor distance = 0 m to 200 m, the amount of movement of the center position of the instantaneous visual field is within about 25 mm. It was confirmed that the location of the fire obtained from the instantaneous field of view was highly reliable. Therefore, it was confirmed that the horizontal scanning is performed semi-continuously and the vertical scanning is performed continuously. Since the conditions for horizontal scanning and vertical scanning are different from the above-mentioned conditions, it is assumed that the amount of movement of the center position of the instantaneous visual field exceeds about 25 mm. In that case, the above-mentioned case is assumed. It is desirable to correct the position of the fire using the correction information.

(Effect of embodiment)
As described above, according to the embodiment, the horizontal scanning motor 28 for scanning the monitoring area 2 in the horizontal direction and the rotary mirror 22 are the first by rotating the rotary mirror 22 around the first swivel shaft 28b. 2 The vertical scanning motor 29 for scanning in the vertical direction with respect to the monitoring area 2 and the horizontal scanning motor 28 and the vertical scanning motor 29 are continuously or quasi-continuously driven by turning around the swivel shaft 29b. Since the drive control unit 34b for controlling the horizontal scanning is provided, the horizontal scanning motor 28 and the vertical scanning motor 29 are driven continuously or quasi-continuously to perform horizontal scanning and vertical scanning. This makes it possible to make the swivel portion 21a and the rotary mirror 22 less likely to vibrate during horizontal scanning or vertical scanning as compared with the case where the horizontal scanning motor 28 or the vertical scanning motor 29 is intermittently driven. can. Therefore, since the vibration noise generated by the vibration of the swivel portion 21a and the rotary mirror 22 can be reduced, the usability of the fire detection device 20 can be improved.

Further, when the horizontal scanning motor 28 or the vertical scanning motor 29 is intermittently driven, the stop time of the quasi-continuous turning step executed a plurality of times when the horizontal scanning motor 28 or the vertical scanning motor 29 is driven semi-continuously is set. Since it is shorter than the stop time of the intermittent turning step executed a plurality of times, during horizontal scanning or vertical scanning as compared with the case where the horizontal scanning motor 28 or the vertical scanning motor 29 is intermittently driven. The swivel portion 21a and the rotary mirror 22 can be made difficult to vibrate, and the vibration noise generated by the vibration of the swivel portion 21a and the rotary mirror 22 can be reduced.

Further, a determination means for determining the number of steps of the quasi-continuous turning step based on the turning angle around the first turning shaft 28b or the second turning shaft 29b of the rotary mirror 22 and the turning time required to turn the turning angle. Therefore, the number of steps of the quasi-continuous turning step regarding the horizontal scanning can be easily determined, and the usability of the fire detection device 20 can be further improved.

Further, a specific unit 34d for specifying the position of the fire and a notification unit 34e for notifying the position of the fire specified by the specific unit 34d based on the detection target light incidented by the rotating mirror 22 are provided. Since the fire is provided, the position of the fire specified by the specific unit 34d can be notified to the external device, and the convenience of the user in detecting the fire can be improved.

Further, a correction unit 34f for correcting the position of the fire specified by the specific unit 34d based on the correction information acquired by the predetermined method is provided, and the notification unit 34e is the position of the fire corrected by the correction unit 34f. Is notified, so that the position of the fire corrected by the correction unit 34f can be notified, and the convenience of the user in detecting the fire can be further improved.

[III] Modifications to the Embodiment The embodiment of the present invention has been described above, but the specific configuration and means of the present invention are within the scope of the technical idea of each invention described in the claims. Can be arbitrarily modified and improved. Hereinafter, such a modification will be described.

(About the problem to be solved and the effect of the invention)
First, the problem to be solved by the invention and the effect of the invention are not limited to the above-mentioned contents, and may differ depending on the implementation environment and the details of the configuration of the invention, and only a part of the above-mentioned problems. May be resolved or only some of the above effects may be achieved.

(About distribution and integration)
Further, each of the above-mentioned electrical components is a functional concept and does not necessarily have to be physically configured as shown in the figure. That is, the specific form of dispersion or integration of each part is not limited to the one shown in the figure, and all or part of them may be functionally or physically dispersed or integrated in any unit according to various loads and usage conditions. Can be configured. Further, the "device" in the present application is not limited to a device composed of a single device, but includes a device composed of a plurality of devices. For example, the fire detection device 20 is dispersedly configured in a plurality of devices configured to be communicable with each other, a control unit 34 is provided in a part of the plurality of devices, and another part of the plurality of devices is provided. May be provided with a storage unit 35.

(About the fire extinguishing system)
In the above embodiment, it has been described that the water cannon 11 and the fire detection device 20 are configured as separate devices, but the present invention is not limited to this, and for example, the water cannon 11 and the fire detection device 20 are combined into one device. It may be configured as.

(About fire detection device)
In the above embodiment, it has been described that the scanning in the first scanning direction in the fire detection device 20 is the scanning in the horizontal direction, and the scanning in the second scanning direction in the fire detection device 20 is the scanning in the vertical direction. Not exclusively. For example, the scan in the first scanning direction in the fire detection device 20 may be scanning in the vertical direction, and the scanning in the second scanning direction in the fire detection device 20 may be scanning in the horizontal direction. Alternatively, the scan in the first scanning direction in the fire detection device 20 is scanning in a direction other than the horizontal direction and the vertical direction (for example, diagonally upward to the left), and the scanning in the second scanning direction in the fire detection device 20 is horizontal and vertical. Scanning may be performed in a direction other than the direction (for example, diagonally upward to the right).

Further, in the above embodiment, the rotating mirror 22 has been described as the incident means, but the present invention is not limited to this. For example, the detection element 27 may be an incident means. In this case, the rotating mirror 22, the objective lens 23, the reflecting mirror 24, the slit portion 25, and the condenser lens 26 may be omitted.

Further, in the above embodiment, it has been explained that the fire detection device 20 includes the determination unit 34c, but the present invention is not limited to this. For example, when the number of steps of the quasi-continuous turning step related to the horizontal scanning is recorded in the storage unit 35 in advance, the determination unit 34c may be omitted. In this case, SB1 and SB2 of the initial setting process of FIG. 7 may be omitted.

Further, in the above embodiment, it has been described that the fire detection device 20 includes the specific unit 34d, but the present invention is not limited to this. For example, when it is not necessary to notify the position of the fire to the external device (for example, when the fire extinguishing system 1 does not have the water cannon 11), the specific unit 34d may be omitted. In this case, SA5 of the fire detection process of FIG. 6 may be omitted.

Further, in the above embodiment, it has been described that the fire detection device 20 includes the correction unit 34f, but the present invention is not limited to this. For example, when the horizontal scanning is performed semi-continuously and the vertical scanning is performed continuously under the condition of the verification result, the correction unit 34f may be omitted. In this case, the correction table 35a may be omitted, or SB3 of the initial setting process of FIG. 7 may be omitted.

Further, in the above embodiment, it has been described that the fire detection device 20 includes a correction table 35a including one correction information, but the present invention is not limited to this, and for example, the fire detection device 20 includes a correction table 35a including a plurality of correction information. You may. As an example, when the monitoring area 2 changes dynamically (for example, when the building is an event facility, the monitoring area 2 dynamically changes depending on the presence or absence of seats, etc.), the monitoring area 2 A correction table including pre-change correction information which is correction information corresponding to the state before dynamically changing and post-change correction information which is correction information corresponding to the state after the monitoring area 2 is dynamically changed. It may be provided with 35a. As a result, the monitoring area can be switched between the pre-change correction information and the post-change correction information by a predetermined method (for example, receiving a predetermined operation via the operation unit 31, receiving a predetermined signal from the receiver 18 and the like). The position of the fire can be corrected based on the correction information according to the state of 2, and the position of the fire can be specified with high accuracy.

(About fire detection processing)
In the above embodiment, it has been described that the number of steps of the quasi-continuous turning step related to the horizontal scanning is used in the initial setting process of SA1 regardless of the determination result of SA4, but the present invention is not limited to this. For example, after the initial setting process of SA1, the determination unit 34c of the fire detection device 20 may determine the number of steps of the quasi-continuous turning step based on the determination result of SA4. As an example, it is determined that a fire has been detected in SA4, although the number of steps of the quasi-continuous turning step determined in the initial setting process of SA1 is used until it is determined that no fire has been detected in SA4. If so, the number of steps calculated (or acquired) by a predetermined method and different from the number of steps of the quasi-continuous turning step determined in the initial setting process of SA1 should be determined. May be determined as. Thereby, the number of steps of the quasi-continuous turning step according to the situation of the monitoring area 2 can be determined. Therefore, for example, by making the number of steps of the quasi-continuous turning step when a fire is detected smaller than the number of steps of the quasi-continuous turning step when no fire is detected, the presence or absence of a fire can be accurately detected. ..

Further, in the above embodiment, it has been described that the horizontal scanning is performed quasi-continuously and the vertical scanning is performed continuously regardless of the determination result of SA4, but the present invention is not limited to this.

For example, the drive control unit 34b of the fire detection device 20 may drive the horizontal scanning motor 28 or the vertical scanning motor 29 continuously, quasi-continuously, or intermittently based on the determination result of the SA4. As an example, until it is determined that no fire has been detected in SA4, the horizontal scanning motor 28 and the vertical scanning motor 29 are driven either semi-continuously or continuously, but the SA4 fires. If it is determined that is detected, each of the horizontal scanning motor 28 and the vertical scanning motor 29 may be driven quasi-continuously, continuously, or intermittently (or the horizontal scanning motor 28 and / and vertical). The drive of the scanning motor 29 may be changed to either quasi-continuous, continuous, or intermittent). As a result, the horizontal scanning motor 28 or the vertical scanning motor 29 can be continuously or quasi-continuously driven until a fire is detected, and horizontal scanning or vertical scanning can be performed silently. Further, the horizontal scanning motor 28 or the vertical scanning motor 29 can be intermittently driven after the fire is detected, and the presence or absence of the fire can be detected relatively accurately in the horizontal scanning or the vertical scanning. Therefore, the usability of the fire detection device 20 can be further improved. In this case, the correction table 35a is used for continuous correction information, which is correction information corresponding to continuous driving of the horizontal scanning motor 28 or vertical scanning motor 29, and quasi-continuous driving of the horizontal scanning motor 28 or vertical scanning motor 29. The horizontal scanning motor 28 or the vertical scanning motor 29 may be configured to include quasi-continuous correction information which is the corresponding correction information (note that the horizontal scanning motor 28 or the vertical scanning motor 29 is based on other conditions other than the determination result of SA4 described later). The same applies to the case of continuous, quasi-continuous, or intermittent driving). Further, in the example in which the continuous correction information and the quasi-continuous correction information are used, for example, when the vertical scanning motor 29 is continuously driven and the horizontal scanning motor 28 is driven quasi-continuously or intermittently. , The case where the horizontal scanning motor 28 is turned in the horizontal direction during the vertical scanning because the stop time of the horizontal scanning motor 28 is shorter than the time when the vertical scanning motor 29 rotates by 45 ° is applicable (in particular, the horizontal scanning motor 28 is applicable). When driven intermittently, only the quasi-continuous correction information of the vertical scanning motor 29 is used). Thereby, for example, by switching the continuous correction information or the quasi-continuous correction information according to the determination result, the position of the fire is corrected based on the correction information according to the driving state of the horizontal scanning motor 28 or the vertical scanning motor 29. This can be done and the location of the fire can be identified with high accuracy. For example, in addition to correcting the position of the fire by using these continuous correction information and quasi-continuous correction information, the floor distance correction information (specifically, the floor distance correction information) which is the correction information corresponding to the floor distance is used. The position of the fire may be further corrected by using the correction information) in which the correction value increases as the floor distance increases.

Further, for example, the drive control unit 34b of the fire detection device 20 continuously, quasi-continuously, or intermittently drives the horizontal scanning motor 28 or the vertical scanning motor 29 based on conditions other than the determination result of the SA4. You may let me. As an example, until a predetermined operation is accepted or a predetermined time arrives, the horizontal scanning motor 28 and the vertical scanning motor 29 are driven either quasi-continuously or continuously, but the predetermined operation is accepted. After or after a predetermined time has arrived, each of the horizontal scanning motor 28 and the vertical scanning motor 29 may be driven quasi-continuously, continuously, or intermittently (or the horizontal scanning motor 28 and / and the vertical scanning). The drive of the motor 29 may be changed to either quasi-continuous, continuous, or intermittent). As a result, the horizontal scanning motor 28 or the vertical scanning motor 29 can be continuously or quasi-continuously driven until a predetermined operation is accepted or a predetermined time arrives, and horizontal scanning or vertical scanning is silent. Can be done at. Further, the horizontal scanning motor 28 or the vertical scanning motor 29 can be intermittently driven after the predetermined operation is accepted or after the predetermined time has arrived, and the presence or absence of a fire is compared in the horizontal scanning or the vertical scanning. It can be detected accurately. Therefore, the usability of the fire detection device 20 can be further improved.

(Additional note)
The fire detection device according to Appendix 1 is a fire detection device for detecting and notifying a fire in a monitoring area, and the fire detection device according to claim 1 is an incident light incident on which light to be detected is incident from the monitoring area. The means, the determination means for determining the presence or absence of the fire based on the detection target light incidented by the incident means, and the incident means for the monitoring area by turning around the first turning axis. Scanning with respect to the monitoring region by swiveling the first scanning driving means for scanning in the first scanning direction and the incident means around a second swivel axis different from the first swivel axis. A second scanning driving means for performing scanning in a second scanning direction different from the first scanning direction, and the first scanning driving means and the second scanning driving means are driven continuously or quasi-continuously. It is equipped with a drive control means for controlling.

The fire detection device of Appendix 2 controls the fire detection device according to Appendix 1 to drive each of the first scanning drive means and the second scanning drive means continuously, quasi-continuously, or intermittently. It is a quasi-continuous turning step executed a plurality of times when the first scanning driving means or the second scanning driving means is driven quasi-continuously, and the first scanning driving means or the first scanning driving means or the second scanning driving means. The stop time of the quasi-continuous turning step for turning and stopping the second scanning drive means is executed a plurality of times when the first scanning drive means or the second scanning drive means is intermittently driven. The step is shorter than the stop time of the intermittent turning step for turning and stopping the turning and turning of the first scanning driving means or the second scanning driving means.

The fire detection device of the appendix 3 is a swivel angle acquired by a predetermined method in the fire detection device of the appendix 2, and is a swivel angle around the first swivel axis or the second swivel axis of the incident means. A determination means for determining the number of steps of the quasi-continuous turning step is provided based on the turning time obtained by a predetermined method and the turning time required to turn the turning angle.

The fire detection device of the appendix 4 is the fire detection device of the appendix 3, and the determination means determines the number of steps of the quasi-continuous turning step based on the determination result of the determination means.

The fire detection device of the appendix 5 is the specific means for identifying the position of the fire based on the detection target light incidented by the incident means in the fire detection device according to any one of the appendices 1 to 4. And a notification means for notifying the position of the fire specified by the specific means.

The fire detection device of the appendix 6 includes a correction means for correcting the position of the fire specified by the specific means based on the correction information acquired by a predetermined method in the fire detection device of the appendix 5. The notification means notifies the position of the fire corrected by the correction means.

In the fire detection device according to the appendix 6, the correction information is the correction information corresponding to the continuous drive of the first scanning drive means or the second scanning drive means. The information includes information and quasi-continuous correction information which is correction information corresponding to the quasi-continuous driving of the first scanning driving means or the second scanning driving means.

The fire detection device according to the appendix 8 is the fire detection device according to the appendix 6 or 7, wherein the correction information includes pre-change correction information which is correction information corresponding to a state before the monitoring area is dynamically changed. The post-change correction information, which is the correction information corresponding to the state after the monitoring area is dynamically changed, is included.

The fire detection device of the appendix 9 is the fire detection device according to any one of the appendices 1 to 8, and the first drive control means is the first until it is determined that the determination means has detected the fire. The scanning driving means and the second scanning driving means are controlled to be driven either continuously or quasi-continuously, and after it is determined by the determining means that the fire has been detected, the first Each of the scanning driving means and the second scanning driving means is controlled to be driven continuously, quasi-continuously, or intermittently.

The fire detection device of the appendix 10 is the fire detection device according to any one of the appendices 1 to 9, wherein the drive control means drives the first scan until a predetermined operation is accepted or a predetermined time arrives. The first scan is controlled after the means and the second scan drive means are controlled to be driven either continuously or quasi-continuously, and after the predetermined operation is accepted or the predetermined time has arrived. Each of the driving means and the second scanning driving means is controlled to be driven continuously, quasi-continuously, or intermittently.

(Effect of appendix)
According to the fire detection device described in Appendix 1, the incident means are provided with a first scanning driving means for scanning the monitoring area in the first scanning direction by rotating the incident means around the first turning axis, and the incident means. By turning around the second turning axis, the second scanning driving means for scanning the monitoring area in the second scanning direction, and the first scanning driving means and the second scanning driving means are continuously or quasi. Since it is provided with a drive control means for controlling to be continuously driven, scanning in the first scanning direction is performed by continuously or quasi-continuously driving each of the first scanning driving means and the second scanning driving means. And scanning in the second scanning direction can be performed, and the scanning in the first scanning direction or the scanning in the second scanning direction is being performed as compared with the case where the first scanning driving means or the second scanning driving means is intermittently driven. At least the incident means can be made less likely to vibrate. Therefore, at least the vibration noise generated by the vibration of the incident means can be reduced, so that the usability of the fire detection device can be improved.

According to the fire detection device described in Appendix 2, the stop time of the quasi-continuous turning step executed a plurality of times when the first scanning driving means or the second scanning driving means is driven quasi-continuously is set to the first scanning drive. When the first scan drive means or the second scan drive means is intermittently driven because it is shorter than the stop time of the intermittent turning step executed a plurality of times when the means or the second scan drive means is intermittently driven. In comparison with the above, at least the incident means can be made less likely to vibrate during scanning in the first scanning direction or during scanning in the second scanning direction, and at least the vibration noise generated by the vibration of the incident means can be reduced.

According to the fire detection device described in Appendix 3, the quasi-continuous turning step is based on the turning angle around the first turning axis or the second turning axis of the incident means and the turning time required to turn the turning angle. Since the determination means for determining the number of steps is provided, the number of steps of the quasi-continuous turning step regarding scanning in the first scanning direction can be easily determined, and the usability of the fire detection device can be further improved.

According to the fire detection device described in Appendix 4, the determining means determines the number of steps of the quasi-continuous turning step based on the determination result of the determining means, so that the steps of the quasi-continuous turning step according to the situation of the monitoring area The number can be determined. Therefore, for example, by making the number of steps of the quasi-continuous turning step when a fire is detected smaller than the number of steps of the quasi-continuous turning step when no fire is detected, the presence or absence of a fire can be accurately detected. ..

According to the fire detection device described in Appendix 5, in order to notify the specific means for specifying the position of the fire and the position of the fire specified by the specific means based on the detection target light incidented by the incident means. Since the fire is provided with the notification means of, the position of the fire specified by the specific means can be notified to the external device (for example, the position of the fire in the stadium or the exhibition hall is clearly notified. It is possible to improve the convenience of the user in detecting a fire.

According to the fire detection device described in Appendix 6, a correction means for correcting the position of the fire specified by the specific means is provided based on the correction information acquired by the predetermined method, and the notification means is the correction means. Since the position of the corrected fire is notified, the position of the corrected fire can be notified by the correction means, and the convenience of the user in detecting the fire can be further improved.

According to the fire detection device according to the appendix 7, the correction information includes the continuous correction information corresponding to the continuous drive of the first scan drive means or the second scan drive means, and the first scan drive means or the second scan drive. Since the quasi-continuous correction information corresponding to the quasi-continuous correction information of the means is included, the position of the fire is corrected based on the correction information according to the driving state of the first scanning drive means or the second scanning drive means. This can be done and the location of the fire can be identified with high accuracy.

According to the fire detection device described in Appendix 8, the correction information corresponds to the pre-change correction information corresponding to the state before the monitoring area is dynamically changed and the state after the monitoring area is dynamically changed. Since the post-change correction information is included, the position of the fire can be corrected based on the correction information according to the state of the monitoring area, and the position of the fire can be specified with high accuracy.

According to the fire detection device according to the appendix 9, the drive control means can continuously or quasi-continuously drive the first scanning drive means or the second scanning drive means until a fire is detected. Scanning in the scanning direction or scanning in the second scanning direction can be performed silently. Further, the drive control means can intermittently drive the first scan drive means or the second scan drive means after the fire is detected, and the fire can be detected in the scan in the first scan direction and the scan in the second scan direction. The presence or absence can be detected relatively accurately. Therefore, the usability of the fire detection device can be further improved.

According to the fire detection device according to the appendix 10, the drive control means continuously or quasi-continuously drives the first scan drive means or the second scan drive means until a predetermined operation is accepted or a predetermined time arrives. The scanning in the first scanning direction or the scanning in the second scanning direction can be performed silently. Further, the drive control means can intermittently drive the first scan drive means or the second scan drive means after the predetermined operation is received or after the predetermined time has arrived, and the scan in the first scan direction and the second scan can be performed. The presence or absence of a fire can be detected relatively accurately by scanning in two scanning directions. Therefore, the usability of the fire detection device can be further improved.

1 Fire extinguishing system 2 Monitoring area 3 Wiring 4 Water distribution pipe 5 Air piping 6 Drain pipe 11 Water discharge gun 12 Operation device 13 On-off valve 14 Water discharge control device 15 Air compressor 16 Pump equipment 17 Pump control device 18 Receiver 20 Fire detection device 21 Housing 21a Swing part 21b Base part 22 Rotating mirror 23 Objective lens 24 Reflector 25 Slit part 25a Opening 26 Condensing lens 27 Detection element 28 Horizontal scanning motor 28a Horizontal drive unit 28b 1st swivel shaft 29 Vertical scanning motor 29a Vertical drive unit 29b 2 Swing axis 30 Control unit 31 Operation unit 32 Communication unit 33 Power supply unit 34 Control unit 34a Judgment unit 34b Drive control unit 34c Determination unit 34d Specific unit 34e Notification unit 34f Correction unit 35 Storage unit 35a Correction table SS Instantaneous viewing

Claims (10)

A fire detection device for detecting and notifying a fire in the monitoring area.
An incident means in which the light to be detected is incident from the monitoring area, and
A determination means for determining the presence or absence of the fire based on the detection target light incidented by the incident means, and
A first scanning driving means for scanning in the first scanning direction with respect to the monitoring area by swiveling the incident means around the first swivel axis.
To swivel the incident means around a second swivel axis different from the first swivel axis to scan the monitoring area in a second scanning direction different from the first scanning direction. The second scanning drive means and
One of the first scanning driving means and the second scanning driving means is continuously driven, and either the first scanning driving means or the second scanning driving means is driven semi-continuously. Drive control means to control
A fire detection device equipped with. The drive control means for controlling each of the first scan drive means and the second scan drive means to be driven continuously, quasi-continuously, or intermittently is provided.
A quasi-continuous turning step executed a plurality of times when the first scanning driving means or the second scanning driving means is driven quasi-continuously, and the turning of the first scanning driving means or the second scanning driving means. In the intermittent turning step, which is executed a plurality of times when the first scanning driving means or the second scanning driving means is intermittently driven, the stop time of the quasi-continuous turning step for stopping the turning is the first. It is shorter than the stop time of the intermittent turning step for turning and turning and stopping the scanning drive means or the second scanning drive means.
The fire detection device according to claim 1. The turning angle acquired by a predetermined method, which is the turning angle around the first turning axis or the second turning axis of the incident means, and the turning time acquired by the predetermined method, turn the turning angle. A determination means for determining the number of steps of the quasi-continuous turning step based on the turning time required for the quasi-continuous turning step.
The fire detection device according to claim 2. The determination means determines the number of steps of the quasi-continuous turning step based on the determination result of the determination means.
The fire detection device according to claim 3. A specific means for identifying the position of the fire based on the detection target light incidented by the incident means, and a specific means for identifying the position of the fire.
A notification means for notifying the position of the fire specified by the specific means is provided.
The fire detection device according to any one of claims 1 to 4. A correction means for correcting the position of the fire specified by the specific means based on the correction information acquired by a predetermined method is provided.
The notification means notifies the position of the fire corrected by the correction means.
The fire detection device according to claim 5. The correction information is
Continuous correction information, which is correction information corresponding to continuous driving of the first scanning driving means or the second scanning driving means, and
Includes quasi-continuous correction information, which is correction information corresponding to the quasi-continuous drive of the first scanning drive means or the second scanning drive means.
The fire detection device according to claim 6. The correction information is
Pre-change correction information, which is correction information corresponding to the state before the monitoring area dynamically changes,
The post-change correction information, which is the correction information corresponding to the state after the monitoring area is dynamically changed, is included.
The fire detection device according to claim 6 or 7. The drive control means is
Until it is determined that the fire has been detected by the determination means, each of the first scanning drive means and the second scanning drive means is controlled to be driven either continuously or quasi-continuously.
After it is determined that the fire has been detected by the determination means, each of the first scanning drive means and the second scanning drive means is controlled to be continuously, quasi-continuously, or intermittently driven.
The fire detection device according to any one of claims 1 to 8. The drive control means is
Until a predetermined operation is accepted or a predetermined time arrives, each of the first scanning driving means and the second scanning driving means is controlled to be driven either continuously or quasi-continuously.
After the predetermined operation is received or the predetermined time has arrived, each of the first scanning drive means and the second scanning drive means is controlled to be continuously, quasi-continuously, or intermittently driven. ,
The fire detection device according to any one of claims 1 to 9.

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