Disaster prevention system

Abstract

To enable a test device to collect information of one or a plurality of fire detectors so as to confirm the information by connecting the test device to a side of an arbitrary fire detector in an installation site or a disaster prevention reception board without requiring power supply from the test device to the fire detector.SOLUTION: A plurality of fire detectors 12(12-1), 12(12-2)... for detecting a fire of a monitoring area are connected in parallel to a signal line 14 from a disaster prevention reception board 10. thereby to monitor a fire. The test device 15 is removably connected between the fire detector 12(12-2) and the signal line 14 via a connector, for example. Power from the disaster prevention reception board 10 is supplied to the test device 15 via a power source line and also the test device is connected to the fire detectors 12(12-1), 12(12-2)... via a transmission line. Then, the test device 15 receives the information detected by the designated arbitrary fire detector 12 so as to preserve the information.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a disaster prevention system that monitors for fires by connecting a fire detector that detects fires in a monitored area to a signal line from a disaster prevention receiving panel. [Background technology]

[0002] Conventionally, for example, in tunnels on expressways and the like, fire detectors are installed along the length of the tunnel as a disaster prevention system to monitor for fires that occur within the tunnel and protect people and vehicles from fire accidents, and the fire detectors are connected to signal lines pulled out from a disaster prevention receiving panel.

[0003] The fire detectors have detection areas on both the left and right sides of the tunnel in the longitudinal direction, and are placed consecutively, for example at intervals of 25 m or 50 m, so that the detection areas of adjacent fire detectors overlap in a mutually complementary manner.

[0004] In order to detect fires, fire detectors use a light receiving element to receive, for example, infrared energy as radiation energy (light energy) from fire flames occurring inside the tunnel through a translucent window, and in order to maintain the fire detection function, sensitivity tests are conducted to monitor the sensitivity of the light receiving element, and dirt tests are conducted to monitor dirt on the translucent window.

[0005] In the sensitivity test of the light receiving element, when a test signal periodically transmitted from the disaster prevention receiving panel is received, a test light equivalent to the light emitted from a fire flame is incident from a test light source on the light receiving element to detect the light receiving sensitivity (light receiving value).Then, the fire detector transmits a failure signal (sensitivity abnormality signal) of the light receiving element to the disaster prevention receiving panel according to the detected light receiving sensitivity, causing it to output a failure alarm (sensitivity abnormality alarm) of the light receiving element.

[0006] In the stain test of the light-transmitting window, when a test signal periodically transmitted from the disaster prevention receiving panel is received, a test light is emitted from a test light source provided outside the fire detector through the light-transmitting window into the light-receiving element to determine the light attenuation rate. The fire detector maintains the fire detection function by correcting the light reception value until the light attenuation rate falls below a predetermined stain threshold, and when the light attenuation rate exceeds the predetermined stain threshold, it transmits a stain abnormality signal to the disaster prevention receiving panel to output a stain alarm.

[0007] Also, in recent years, methods of monitoring the deterioration of fire detectors have become known, such as a radiation type fire detector that performs a sensitivity test and judges that there is an abnormality in deterioration when the light receiving element meets the conditions before it is deemed to have failed (Patent Document 1), and a tunnel disaster prevention system that detects deterioration of a fire detector based on information (e.g., current consumption) other than the light receiving sensitivity (light receiving value) of the sensitivity test in the fire detector (Patent Document 2).

[0008] In addition, in conventional disaster prevention systems, a test device with the same functions is installed on the disaster prevention receiving panel side, the signal line connected to the disaster prevention receiving panel is disconnected and connected to the test device, and information on signs of deterioration of the fire detector is collected by the test device installed on the disaster prevention receiving panel side (Patent Document 3). [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Patent No. 3240586 [Patent Document 2] Patent No. 6900206 [Patent Document 3] Patent Publication No. 2021-163099 Summary of the Invention

[0010] However, in conventional disaster prevention systems (Patent Document 3), in which deterioration warning information for fire detectors is collected using test equipment installed on the disaster prevention receiving panel side, test equipment with the same functions and power supply as the disaster prevention receiving panel is required, resulting in problems such as a complex equipment configuration and high costs.

[0011] In addition, the fire detector operates by receiving power from two power sources, a normal power source and a test power source, from the disaster prevention receiving panel.When switching from the disaster prevention receiving panel to the test equipment, the power supply to the fire detector is cut off when the signal line from the disaster prevention receiving panel is disconnected.When the signal line is then connected to the test equipment, power is supplied to the fire detector and it restarts, which creates the same situation as a power outage occurring during operation and increases the possibility of a malfunction that prevents the fire detector from starting up normally due to the power supply being disconnected.

[0012] In addition, detector information collected by the test equipment may be collected and checked not only on the disaster prevention receiving panel side, but also on the fire detector side installed at the site. In such cases, it is necessary to collect and check information not only from a specific fire detector, but also from multiple surrounding fire detectors.

[0013] For this reason, if the testing equipment is made portable, it requires a battery power source, and in order to ensure sufficient power to collect information while operating multiple fire detectors, the battery power source becomes large, which means that each fire detector has to be tested individually, making it time-consuming and laborious to collect information on-site.

[0014] The object of the present invention is to provide a disaster prevention system that enables a test device to be connected to the fire detector side or disaster prevention receiving panel side at any installation site, and that allows information from one or more fire detectors to be collected and confirmed by the test device, without the need to supply power from the test device to the fire detector. [Means for solving the problem]

[0015] (First invention: A system for connecting a test device to a fire detector) The present invention is a disaster prevention system that monitors abnormalities including fires by connecting multiple fire detectors that detect fires in a monitoring area in parallel to a signal line from a disaster prevention receiving panel, The signal lines include power lines and transmission lines; The fire detector is detachably connected to the signal line via a connector, A test device is detachably connected between the signal line and any one of the fire detectors via a connector, and power is supplied to the test device via a power line and the test device is connected to the plurality of fire detectors via a transmission line; The test device is characterized by receiving and storing information detected by a specified fire detector.

[0016] (Connector connection between fire detector and test device) The fire detector is connected to the signal line by a first connector, The test device includes a socket of the second connector and a plug of a third connector that is connected to the same signal line as the signal line; The plug of the first connector removed from one of the fire detectors is connected to the socket of the second connector of the test device, and the plug of the third connector of the test device is connected to the socket of the first connector of the fire detector, thereby removably connecting the test device between the signal line and the fire detector.

[0017] (Second invention: A system for connecting a test device to the signal line lead-out section of a disaster prevention receiving panel) In another embodiment of the present invention, a disaster prevention system is provided that monitors for abnormalities including fires by connecting a plurality of fire detectors in a monitoring area in parallel to a signal line from a disaster prevention receiving panel, The signal lines include power lines and transmission lines; The fire detector is detachably connected to the signal line via a connector, A test device is detachably connected to a connector connecting portion of a signal line to the disaster prevention receiving panel via a connector, and power is supplied to the test device via a power line and the test device is connected to a plurality of fire detectors via a transmission line; The test device is characterized by receiving and storing information detected by a specified fire detector.

[0018] (Connector connection between emergency receiving panel and test equipment) The fire detector is connected to the signal line by a first connector, The test device includes a socket of the second connector and a plug of a third connector that is connected to the same signal line as the signal line; The emergency receiving panel is connected to the signal line by the 4th connector in a detachable manner. By connecting the plug of the fourth connector removed from the disaster prevention receiving panel to the socket of the second connector of the test device and connecting the plug of the third connector of the test device to the socket of the fourth connector of the disaster prevention receiving panel, the test device is detachably connected to the connection point of the signal line to the disaster prevention receiving panel.

[0019] (Third invention: A system for connecting a test device to a line switching unit of a disaster prevention receiving panel) In another embodiment of the present invention, a disaster prevention system is provided that monitors for abnormalities including fires by connecting a plurality of fire detectors in a monitoring area in parallel to a signal line from a disaster prevention receiving panel, The signal lines include power lines and transmission lines; The fire detector is detachably connected to the signal line via a connector, The disaster prevention receiving panel includes a line switching unit that connects a power line included in the signal line to the test device and switches the transmission line from the fire detector side to the disaster prevention receiving panel side or the test device side, With the signal line switched to the test equipment side by the line switching unit, the test equipment is connected to the line switching unit via a connector, thereby supplying power to the test equipment via the power line and connecting it to multiple fire detectors via the transmission line; The test device is characterized by receiving and storing information detected by a specified fire detector.

[0020] (Connector connection between emergency receiving panel and test equipment) The fire detector is connected to the signal line by a first connector, The test device includes a socket of the second connector and a plug of a third connector that is connected to the same signal line as the signal line; The disaster prevention receiving panel is provided with a fourth connector for connecting the signal line of the fire detector side and a socket for a fifth connector of the line switching unit for connecting the signal line of the test device side, The line switching unit of the disaster prevention receiving panel is provided with a changeover switch circuit that switches the transmission line from the fourth connector to a transmission line to a transmission unit in the disaster prevention receiving panel or a transmission line to a socket of the fifth connector, The plug of the third connector of the test device is connected to the socket of the fifth connector of the line switching unit, thereby detachably connecting the test device to the line switching unit of the disaster prevention receiving panel; The test device receives and stores information detected by the specified fire detector.

[0021] (4th invention: A system for connecting a test device to a line branch of a disaster prevention receiving panel) In another embodiment of the present invention, a disaster prevention system is provided that monitors for abnormalities including fires by connecting a plurality of fire detectors in a monitoring area in parallel to a signal line from a disaster prevention receiving panel, The signal lines include power lines and transmission lines; The fire detector is detachably connected to the signal line via a connector, The disaster prevention receiving panel is provided with a line branching section which connects the power supply line included in the signal line to the test device and connects the transmission line from the fire detector side to the disaster prevention receiving panel side or the test device side, With the signal line connected to the test equipment via the line branching section, the test equipment is connected to the line branching section via a connector, thereby supplying power to the test equipment via the power line and connecting it to multiple fire detectors via the transmission line. The test device is characterized by receiving and storing information detected by a specified fire detector.

[0022] (Connector connection between emergency receiving panel and test equipment) The fire detector is connected to the signal line by a first connector, the test device includes a socket of the second connector and a plug of a third connector led out on the same signal line as the signal line; The disaster prevention receiving panel is provided with a fourth connector for connecting the signal line of the fire detector side and a socket of a sixth connector of the line branching part for connecting the signal line of the test device side, The line branching section of the disaster prevention receiving panel branches and connects the power line and transmission line from the transmission section in the disaster prevention receiving panel to the 4th connector to the socket of the 6th connector, The plug of the third connector of the test device is connected to the socket of the sixth connector of the line branching section, thereby detachably connecting the test device to the branching section of the disaster prevention receiving panel; The test device receives and stores information detected by the specified fire detector.

[0023] (Stopping polling of the disaster prevention receiving panel of the first, second and fourth inventions) When the test device is connected, the disaster prevention receiving panel stops the polling process of periodically sending a call signal to the fire detector using the transmission line and receiving a response signal, and allocates the transmission line to transmitting information by the test device.

[0024] (Fire interruption during polling stop of the first, second and fourth inventions) The disaster prevention receiving panel detects a fire and issues an alarm based on the reception of a fire interrupt signal that is transmitted when a fire is detected by a fire detector while the polling process is stopped.

[0025] (Third invention: Fire monitoring using test equipment) The test device, while connected to multiple fire detectors via a line switching unit, detects fires and issues an alarm based on receiving a fire interrupt signal transmitted when a fire is detected by a fire detector.

[0026] (Signal Line Configuration) The power supply circuit consists of a normal power supply circuit and a test power supply circuit. The signal line is A first power supply line and a first power supply common line that constitute a normal power supply circuit; a second power supply line and a second power supply common line constituting a test power supply circuit; A serial signal line and a serial signal common line constituting a transmission line; It is a six-line station with

[0027] (Transmission of downstream and upstream signals) The disaster prevention receiving panel transmits a predetermined downstream signal to the fire detector and receives a predetermined upstream signal from the fire detector, The test device transmits a downstream signal to the fire detector and receives an upstream signal from the fire detector, transmits an upstream signal to the disaster prevention receiving panel and receives a downstream signal from the disaster prevention receiving panel, The fire detector receives downstream signals from the disaster prevention receiving panel or the test device, and transmits upstream signals to the disaster prevention receiving panel or the test device.

[0028] (Voltage mode downstream signal and current mode upstream signal) The downstream signal is a voltage mode signal that changes the signal voltage on the transmission line. The upstream signal is a current mode signal that changes the signal current on the transmission line. Effect of the Invention

[0029] (Effect of the first invention: Effect of the system that connects the test device to the fire detector) The present invention is a disaster prevention system that monitors for abnormalities including fires by connecting multiple fire detectors that detect fires in a monitored area in parallel to a signal line from a disaster prevention receiving panel, the signal line including a power supply line and a transmission line, and the fire detectors are detachably connected to the signal line via connectors, and with a test device detachably connected between the signal line and any of the fire detectors via a connector, power is supplied to the test device via the power supply line and the test device is connected to the multiple fire detectors via the transmission line, and information detected by a specified fire detector is received and stored by the test device. Therefore, even if the test device is connected between the signal line and the fire detector via a connector, the power supply from the disaster prevention receiving panel to all of the fire detectors connected to the signal line is maintained, and there is no need to provide the test device with a power supply unit equivalent to that of the disaster prevention receiving panel, making the test device small and lightweight and enabling it to be made into a portable test device.

[0030] In addition, the test device operates by receiving power from the disaster prevention receiving panel and only needs to be equipped with a small, small-capacity battery power source sufficient to operate it itself, making it possible to make the test device even smaller and lighter.

[0031] In addition, the test device can be connected via a connector at the location of any fire detector connected to the signal line, and by connecting it via the connector to a fire detector installed in a location where the temperature and humidity environments, which are factors that cause deterioration, are more likely to lead to deterioration than others, it makes it possible to collect deterioration prediction information, etc. stored in the fire detector at the installation site of the fire detector.

[0032] In addition, the test equipment connected via a connector between the signal line and any fire detector is connected to all fire detectors via a transmission line included in the signal line, and by specifying the addresses of not only the fire detector to which the test equipment is connected via the connector but also all other fire detectors and instructing them to read, it is possible to collect and confirm the stored information.

[0033] In addition, when test equipment is connected between the signal line and the fire detector via a connector, the fire detector whose connector is disconnected will be restarted by disconnecting the power supply, but the power supply to all other fire detectors is maintained even if the test equipment is connected via a connector, which minimizes the need for restarts of fire detectors due to disconnection of the power supply during operation, thereby making it possible to suppress the occurrence of fire detector start-up failures due to disconnection of the power supply.

[0034] (Effect of connector connection between fire detector and test device) In addition, in the first invention, the fire detector is connected to the signal line by a first connector, and the test equipment is provided with a socket of the second connector and a plug of the third connector pulled out by the same signal line as the signal line, and by connecting the plug of the first connector removed from any of the fire detectors to the socket of the second connector of the test equipment and connecting the plug of the third connector of the test equipment to the socket of the first connector of the fire detector, the test equipment can be detachably connected between the signal line and the fire detector, so that the plug of the first connector connecting the fire detector to the signal line, the socket of the second connector of the test equipment, and the plug of the third connector of the test equipment can be simply and easily connected between the signal line and the fire detector by the connectors, making it possible to collect information specifying any fire detector connected to the signal line.

[0035] (Effect of the second invention: Effect of the system that connects the test device to the signal line pull-out part of the disaster prevention receiving panel) In another embodiment of the present invention, a disaster prevention system monitors for abnormalities including fires by connecting a plurality of fire detectors in a monitoring area in parallel to a signal line from a disaster prevention receiving panel, the signal line including a power supply line and a transmission line, the fire detectors being detachably connected to the signal line via a connector, and a test device being detachably connected to a connector connection portion of the signal line to the disaster prevention receiving panel via a connector, the test device being supplied with power via the power supply line and being connected to the plurality of fire detectors via the transmission line, and the test device receiving and storing information detected by a designated fire detector. Therefore, even if the test device is connected between the disaster prevention receiving panel and the signal line via a connector, the power supply is temporarily cut off when the test device is connected, but after the test device is connected, the power supply from the disaster prevention receiving panel to all of the fire detectors connected to the signal line is maintained, so there is no need to provide the test device with a power supply unit equivalent to that of the disaster prevention receiving panel, and the test device is small and lightweight, enabling it to be a portable test device.

[0036] In addition, the test device operates by receiving power from the disaster prevention receiving panel and only needs to be equipped with a small, small-capacity battery power source sufficient to operate it itself, making it possible to make the test device even smaller and lighter.

[0037] In addition, the test equipment connected via a connector between the disaster prevention receiving panel and the signal line is connected to all fire detectors via a transmission line included in the signal line, making it possible to collect and confirm the stored information by specifying the addresses of all fire detectors and instructing them to read out.

[0038] (Effect of connecting the emergency receiving panel and test equipment) In addition, in the second invention, the fire detector is connected to the signal line by the first connector, the test device has a socket of the second connector and a plug of the third connector drawn out by the same signal line as the signal line, and the disaster prevention receiving panel detachably connects the signal line by the fourth connector, and by connecting the plug of the fourth connector removed from the disaster prevention receiving panel to the socket of the second connector of the test device and connecting the plug of the third connector of the test device to the socket of the fourth connector of the disaster prevention receiving panel, the test device is detachably connected to the connection point of the signal line to the disaster prevention receiving panel, so that the test device can be simply and easily connected between the disaster prevention receiving panel and the signal line via the connectors by the socket of the second connector of the test device and the plug of the third connector of the test device, and the socket and plug of the fourth connector connecting the signal line to the disaster prevention receiving panel, making it possible to collect information specifying any fire detector connected to the signal line.

[0039] (Effect of the third invention: Effect of the system that connects the test device to the line switching unit of the disaster prevention receiving panel) In another embodiment of the present invention, a disaster prevention system monitors for abnormalities including fires by connecting a plurality of fire detectors in a monitoring area in parallel to a signal line from a disaster prevention receiving panel, the signal line including a power supply line and a transmission line, and the fire detectors are detachably connected to the signal line via a connector, the disaster prevention receiving panel includes a line switching unit that connects the power supply line included in the signal line to a test device and switches the transmission line from the fire detector side to either the disaster prevention receiving panel side or the test device side, and in a state in which the signal line is switched and connected to the test device side by the line switching unit, the test device is connected to the line switching unit via a connector, whereby power is supplied to the test device via the power supply line and the test device is connected to the plurality of fire detectors via the transmission line, and the test device receives and stores information detected by a specified fire detector, so that by simply connecting the test device to the line switching unit of the disaster prevention receiving panel via a connector and disconnecting the transmission line from the disaster prevention receiving panel side by the line switching unit and switching and connecting it to the test device side, the test device is connected to all of the fire detectors via the transmission lines, and it is possible to collect and confirm stored information by specifying an address and instructing reading for all of the fire detectors.

[0040] In addition, the line switching section of the disaster prevention receiving panel fixes the power supply to the fire detector via the power line included in the signal line without switching it, so even if a test device is connected to the line switching section of the disaster prevention receiving panel, the power supply to the fire detector continues without being disconnected, preventing failure to start up the fire detector due to disconnection of the power supply.

[0041] In addition, the test device operates by receiving power from the disaster prevention receiving panel and only needs to be equipped with a small, small-capacity battery power source sufficient to operate it itself, making it possible to make the test device even smaller and lighter.

[0042] (Effect of connecting the emergency receiving panel and test equipment) In addition, in the third invention, the fire detector is connected to the signal line by the first connector, the test device has a socket of the second connector and a plug of the third connector drawn out by the same signal line as the signal line, the disaster prevention receiving panel has a fourth connector that connects the signal line on the fire detector side and a socket of the fifth connector of the line switching unit that connects the signal line on the test device side, and the line switching unit of the disaster prevention receiving panel has a change-over switch circuit that switches the transmission line from the fourth connector to the transmission line to the transmission unit in the disaster prevention receiving panel or the transmission line to the socket of the fifth connector, and by connecting the plug of the third connector of the test device to the socket of the fifth connector of the line switching unit, the test device is detachably connected to the line switching unit of the disaster prevention receiving panel, and the test device receives and stores information detected by a specified fire detector by the test device, so that the test device can be simply and easily connected to the line switching unit of the disaster prevention receiving panel via the connectors by the socket of the second connector of the test device and the socket of the fifth connector provided in the switching unit of the disaster prevention receiving panel, making it possible to collect information specified by any fire detector connected to the signal line.

[0043] (Effect of the fourth invention: Effect of the system that connects the test device to the line branch of the disaster prevention receiving panel) In another embodiment of the present invention, a disaster prevention system monitors for abnormalities including fires by connecting a plurality of fire detectors in a monitoring area in parallel to a signal line from a disaster prevention receiving panel, the signal line including a power supply line and a transmission line, and the fire detectors are detachably connected to the signal line via a connector, the disaster prevention receiving panel includes a line branching section which connects the power supply line included in the signal line to a test device and connects the transmission line from the fire detector side to the disaster prevention receiving panel side or the test device side, and with the signal line connected to the test device side via the line branching section, the test device is supplied with power via the power supply line and is connected to the plurality of fire detectors via the transmission line, and the test device receives and stores information detected by a specified fire detector, so that simply by connecting a test device to the line branching section of the disaster prevention receiving panel via a connector, the test device is connected to all of the fire detectors via the transmission line, and it is possible to collect and confirm stored information for all of the fire detectors by specifying an address and issuing a read instruction.

[0044] In addition, since the line branching section of the disaster prevention receiving panel fixedly connects the power line included in the signal line to the fire detector, even if a test device is connected to the branching section of the disaster prevention receiving panel, the power supply to the fire detector continues without being interrupted, thereby preventing the occurrence of fire detector start-up failures due to interruptions in the power supply.

[0045] In addition, the test device operates by receiving power from the disaster prevention receiving panel and only needs to be equipped with a small, small-capacity battery power source sufficient to operate it itself, making it possible to make the test device even smaller and lighter.

[0046] (Effect of connecting the emergency receiving panel and test equipment) In addition, in the fourth invention, the fire detector is connected to the signal line by the first connector, the test equipment has a socket of the second connector and a plug of the third connector pulled out by the same signal line as the signal line, the disaster prevention receiving panel has a fourth connector for connecting the signal line on the fire detector side and a socket of the sixth connector of the line branching section for connecting the signal line on the test equipment side, the line branching section of the disaster prevention receiving panel branches and connects the power line and transmission line from the transmission section in the disaster prevention receiving panel to the fourth connector to the socket of the sixth connector, and the plug of the third connector of the test equipment is connected to the socket of the sixth connector of the branching section, thereby allowing the test equipment to be detachably connected to the line branching section of the disaster prevention receiving panel, and the test equipment receives and stores information detected by a specified fire detector by the test equipment, so that the test equipment can be simply and easily connected to the line branching section of the disaster prevention receiving panel via the socket of the second connector of the test equipment and the socket of the sixth connector provided in the line branching section of the disaster prevention receiving panel, making it possible to collect information specified by any fire detector connected to the signal line.

[0047] (Effect of stopping polling of the disaster prevention receiving panel of the first, second and fourth inventions) In addition, when the test equipment is connected, the disaster prevention receiving panel stops the polling process of periodically sending a call signal to the fire detector using the transmission line and receiving a response signal, and allocates the transmission line to the transmission of information by the test equipment, making it possible to efficiently transmit and collect information stored in the fire detector to the test equipment via the transmission line without being affected by the polling process of the fire detector from the disaster prevention receiving panel.

[0048] (Effects of fire interruption during polling stop in the first, second and fourth inventions) In addition, the disaster prevention receiving panels of the first, second and fourth inventions detect fires and issue an alarm based on receiving a fire interrupt signal that is sent when a fire is detected by a fire detector while the polling process is stopped. Therefore, even if the polling process of the disaster prevention receiving panel is stopped, a fire alarm will be output from the disaster prevention receiving panel when a fire is detected by the fire detector, making it possible to reliably continue fire monitoring even while fire detector information is being collected by the test equipment.

[0049] (Third invention: Fire monitoring using test equipment) In addition, the testing device of the third invention is connected to multiple fire detectors via the line switching unit, and detects fires and issues an alarm based on receiving a fire interrupt signal sent when a fire is detected by a fire detector.Therefore, even if the disaster prevention receiving panel is disconnected from the transmission line by the line switching unit due to the connection of the testing device, a fire alarm will be output from the testing device when a fire is detected by a fire detector, so that fire monitoring can be continued reliably even while the testing device is collecting information from the fire detector.

[0050] (Effect of signal line configuration) In addition, the power supply line is composed of a normal power supply line and a test power supply line, and the signal line is a six-wire circuit having the first power supply line and first power supply common line that constitute the normal power supply line, the second power supply line and second power supply common line that constitute the test power supply line, and the serial signal line and serial signal common line that constitute the transmission line.Therefore, the first connector of the fire detector, the socket of the second connector and the plug of the third connector of the test equipment, the socket and plug of the fourth connector of the disaster prevention receiving panel, the socket of the fifth connector of the line switching section of the disaster prevention receiving panel, and the socket of the sixth connector of the line branching section of the disaster prevention receiving panel all have a six-pin connector structure, allowing for simple and easy connection of the test equipment.

[0051] (Effect of downstream and upstream signal transmission) In addition, the disaster prevention receiving panel transmits a predetermined downstream signal to the fire detector and receives a predetermined upstream signal from the fire detector, the test equipment transmits a downstream signal to the fire detector and receives an upstream signal from the fire detector, and transmits an upstream signal to the disaster prevention receiving panel and receives a downstream signal from the disaster prevention receiving panel, and the fire detector receives a downstream signal from the disaster prevention receiving panel or the test equipment and transmits an upstream signal to the disaster prevention receiving panel or the test equipment, and the downstream signal is a voltage mode signal that changes the signal voltage of the transmission line, and the upstream signal is a current mode signal that changes the signal current of the transmission line, so that the test equipment can read out information stored in the fire detector as specified by the downstream signal and receive it as an upstream signal to collect information.

[0052] In addition, the test device can stop the polling process of the fire detector by transmitting, for example, an instruction (command) to stop the polling process as an upstream signal to the disaster prevention receiving panel. [Brief description of the drawings]

[0053] [Figure 1] FIG. 1 is an explanatory diagram showing a tunnel disaster prevention system. [Diagram 2] FIG. 2 is an explanatory diagram showing the functional configuration of a disaster prevention receiving panel. [Diagram 3] FIG. 2 is an explanatory diagram showing a fire detector attached to a storage box. [Figure 4] FIG. 2 is an explanatory diagram showing the functional configuration of a fire detector. [Diagram 5] FIG. 1 is an explanatory diagram showing a first embodiment of a tunnel disaster prevention system in which a test device is connected to a fire detector side. [Figure 6] FIG. 6 is an explanatory diagram showing a state in which the lid of the storage box is removed and a testing device is connected to the fire detector via a connector in the first embodiment of FIG. 5. [Figure 7] FIG. 2 is an explanatory diagram showing the appearance of a test device. [Figure 8] FIG. 2 is an explanatory diagram showing a functional configuration of a test device. [Figure 9] 6 is a flowchart showing information collection control of the test device in the first embodiment of FIG. 5. [Figure 10] FIG. 11 is an explanatory diagram showing a second embodiment of the tunnel disaster prevention system in which a test device is connected to a disaster prevention receiving panel. [Figure 11] FIG. 11 is an explanatory diagram showing a third embodiment of a tunnel disaster prevention system in which a test device is connected to a line switching unit of a disaster prevention receiving panel. [Figure 12] 12 is an explanatory diagram showing a circuit configuration of a line switching unit in FIG. 11. [Figure 13] 12 is a flowchart showing information collection control of the test device in the third embodiment of FIG. 11. [Figure 14]FIG. 11 is an explanatory diagram showing a fourth embodiment of a tunnel disaster prevention system in which a test device is connected to a line branching portion of a disaster prevention receiving panel. [Figure 15] 15 is an explanatory diagram showing a circuit configuration of the line branching unit in FIG. 14. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0054] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a disaster prevention system according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the following embodiment.

[0055] [Basic Concept of the Embodiment] First, a basic concept of the embodiment will be described. The embodiment is generally a disaster prevention system that monitors abnormalities in a monitoring area by connecting a plurality of anomaly detectors that detect fires in the monitoring area to a signal line from a disaster prevention receiving panel, and relates to a tunnel disaster prevention system as an example of such a disaster prevention system.

[0056] Here, the "tunnel disaster prevention system" is a system for monitoring and preventing / responding to abnormalities such as fires that may occur within the tunnel, which is the monitored area. Fire detectors acting as abnormality detectors are installed at specified intervals along the length of the tunnel, and the fire detectors are connected to a disaster prevention receiving panel via a signal line.

[0057] The "disaster prevention receiving panel" is installed in the electrical room of the facility or equipment that constructs the disaster prevention system, and monitors abnormalities such as fires in the monitored area by connecting terminal devices of emergency equipment such as fire detectors and fire hydrants installed in the monitored area. The "monitored area" is a place monitored by the disaster prevention system, and is a concept that includes, for example, rooms, corridors, staircases, and the inside of a tunnel in a building.

[0058] In addition, the term "fire detector" refers to a device that detects a fire in a monitored area, and the method of detecting a fire is arbitrary, but includes a device that detects a fire in a monitored area by, for example, receiving radiation (infrared rays) from a fire flame with a flame detection unit and detecting the flame as light energy from a fire flame occurring in the monitored area through a translucent window.

[0059] In the embodiment of the tunnel disaster prevention system, a test device is detachably connected to any position of a signal line including a transmission line and a power supply line using a connector, power is supplied to the test device from a disaster prevention receiving panel via the power supply line, and the test device is connected to multiple fire detectors via the transmission lines, and information detected by the specified fire detectors is received and stored by the test device.

[0060] The tunnel disaster prevention system of the embodiment has first to fourth embodiments corresponding to the first to fourth inventions depending on the location where the test device is connected.

[0061] The first embodiment of the tunnel disaster prevention system corresponding to the first invention has a test device detachably connected via a connector between a signal line and one of the fire detectors, and in this state, power is supplied to the test device via a power line and it is connected to multiple fire detectors via a transmission line, so that the test device receives and stores information detected by the addressed fire detector.

[0062] Here, the fire detector is connected to a signal line including a transmission line and a power line by a first connector, and the test device has a socket of a second connector and a plug of a third connector led out on the same signal line as the signal line.

[0063] Therefore, by connecting the plug of the first connector removed from the fire detector to the socket of the second connector of the test equipment and connecting the plug of the third connector of the test equipment to the socket of the first connector of the fire detector, it is possible to freely detachably connect the test equipment between the signal line and the fire detector.

[0064] According to the first embodiment of this tunnel disaster prevention system, even if the test equipment is connected between the signal line and the fire detector via a connector, the power supply from the disaster prevention receiving panel to all fire detectors connected to the signal line is maintained, so there is no need to provide the test equipment with a power supply unit equivalent to that of the disaster prevention receiving panel, making it possible to make the test equipment small and lightweight, and to make it into a portable test equipment.

[0065] In addition, the test device operates by receiving power from the disaster prevention receiving panel and only needs to be equipped with a small, small-capacity battery power source sufficient to operate it itself, making it possible to make the test device even smaller and lighter.

[0066] In addition, the test device can be connected via a connector at the location of any fire detector connected to the signal line, and by connecting the deterioration prediction information, etc. stored in the fire detector via the connector to a fire detector installed in a tunnel section where temperatures and humidity are high and deterioration factors are likely to occur, it becomes possible to collect the information stored in the fire detector at the installation site.

[0067] In addition, the test equipment connected via a connector between the signal line and any fire detector is connected to all fire detectors via a transmission line included in the signal line, and by specifying the addresses of not only the fire detector to which the test equipment is connected via the connector but also all other fire detectors and instructing them to read, it is possible to collect and confirm the information stored in these fire detectors.

[0068] In addition, when test equipment is connected between the signal line and the fire detector via a connector, the fire detector whose connector is disconnected will be restarted by disconnecting the power supply, but the power supply to all other fire detectors is maintained even if the test equipment is connected via a connector, which minimizes the need for restarts of fire detectors due to disconnection of the power supply during operation, thereby making it possible to suppress the occurrence of fire detector start-up failures due to disconnection of the power supply.

[0069] The second embodiment of the tunnel disaster prevention system corresponding to the second invention has a test device detachably connected via a connector to the connection point of the signal line to the disaster prevention receiving panel, and in this state, power is supplied to the test device via a power line and it is connected to multiple fire detectors via transmission lines, so that the test device receives and stores information detected by the addressed fire detectors.

[0070] Here, the connectors of the fire detector and the test device are the same as those in the first embodiment, and the disaster prevention receiving panel detachably connects the signal line by the fourth connector. Therefore, by connecting the plug of the fourth connector removed from the disaster prevention receiving panel to the socket of the second connector of the test device and connecting the plug of the third connector of the test device to the socket of the fourth connector of the disaster prevention receiving panel, it is possible to detachably connect the test device to the connection site of the signal line to the disaster prevention receiving panel.

[0071] According to the second embodiment of the tunnel disaster prevention system, even if the test equipment is connected between the disaster prevention receiving panel and the signal line via a connector, the power supply is temporarily cut off when the test equipment is connected. However, after the test equipment is connected, the power supply from the disaster prevention receiving panel to all fire detectors connected to the signal line is maintained. Therefore, there is no need to provide the test equipment with a power supply unit equivalent to that of the disaster prevention receiving panel, and the test equipment can be made small and lightweight, making it possible to make it a portable test equipment.

[0072] In addition, the test device operates by receiving power from the disaster prevention receiving panel and only needs to be equipped with a small, small-capacity battery power source sufficient to operate it itself, making it possible to make the test device even smaller and lighter.

[0073] In addition, the test equipment connected via a connector between the disaster prevention receiving panel and the signal line is connected to all fire detectors via a transmission line included in the signal line, and by specifying the addresses of all fire detectors and issuing a read command, it is possible to collect and confirm the information stored in these fire detectors.

[0074] A third embodiment of a tunnel disaster prevention system corresponding to the third invention is provided with a line switching unit that connects the power line included in the signal line of the disaster prevention receiving panel to a test device and switches the transmission line from the fire detector side to either the disaster prevention receiving panel side or the test device side. With the signal line switched and connected to the test device side by the line switching unit, the test device is connected to the line switching unit via a connector, thereby supplying power to the test device via the power line and connecting it to multiple fire detectors via the transmission line, and enabling the test device to receive and store information detected by a specified fire detector.

[0075] Here, the connectors of the fire detector and the testing equipment are the same as those in the first embodiment, and the disaster prevention receiving panel has a fourth connector for connecting the signal line on the fire detector side and a socket of the fifth connector for connecting the signal line on the testing equipment side, and the line switching section of the disaster prevention receiving panel has a changeover switch circuit for switching the transmission line from the fourth connector to the transmission line to the transmission section in the disaster prevention receiving panel or the transmission line to the socket of the fifth connector, and by connecting the plug of the third connector of the testing equipment to the socket of the fifth connector of the line switching section, it is possible to freely detachably connect the testing equipment to the line switching section of the disaster prevention receiving panel.

[0076] According to a third embodiment of the tunnel disaster prevention system, the test device is connected to the line switching section of the disaster prevention receiving panel via a connector, and the line switching section simply disconnects the transmission line from the disaster prevention receiving panel side and switches it to the test device side. This connects the test device to all fire detectors via the transmission line, and by specifying the address and issuing a read command for all fire detectors, it is possible to collect and confirm the information stored in these fire detectors.

[0077] In addition, the line switching section of the disaster prevention receiving panel fixes the power supply to the fire detector via the power line included in the signal line without switching it. Therefore, even if a test device is connected to the line switching section of the disaster prevention receiving panel, the power supply to the fire detector continues without being disconnected, thereby preventing failure to start up the fire detector due to disconnection of the power supply.

[0078] In addition, the test device operates by receiving power from the disaster prevention receiving panel and only needs to be equipped with a small, small-capacity battery power source sufficient to operate it itself, making it possible to make the test device even smaller and lighter.

[0079] In a fourth embodiment of a tunnel disaster prevention system corresponding to the fourth invention, a line branching section is provided in a disaster prevention receiving panel which connects a power supply line included in a signal line to a test device and which connects a transmission line from the fire detector side to the disaster prevention receiving panel side and the test device side. With the signal line connected to the test device side via the line branching section, the test device is connected to the line branching section via a connector, thereby supplying power to the test device via the power supply line and connecting it to multiple fire detectors via the transmission line, and enabling the test device to receive and store information detected by a specified fire detector.

[0080] Here, the connectors of the fire detector and the testing equipment are the same as those in the first embodiment, and the disaster prevention receiving panel is equipped with a fourth connector for connecting the signal line on the fire detector side, and a socket of the sixth connector of the line branching section for connecting the signal line on the testing equipment side, so that the line branching section of the disaster prevention receiving panel branches and connects the power line and transmission line from the transmission section in the disaster prevention receiving panel to the fourth connector to the socket of the sixth connector, and makes it possible to connect the plug of the third connector of the testing equipment to the socket of the sixth connector of the branching section.

[0081] According to the fourth embodiment of the tunnel disaster prevention system, by simply connecting the test device to the line branch of the disaster prevention receiving panel via a connector, the test device is connected to all fire detectors via the transmission line, and by specifying the address of all fire detectors and issuing a read command, it is possible to collect and confirm the information stored in these fire detectors.

[0082] In addition, since the line branching section of the disaster prevention receiving panel fixedly connects the power line included in the signal line to the fire detector, even if a test device is connected to the branching section of the disaster prevention receiving panel, the power supply to the fire detector continues without being interrupted, thereby making it possible to prevent failure to start up the fire detector due to interruption of the power supply.

[0083] In addition, the test device operates by receiving power from the disaster prevention receiving panel and only needs to be equipped with a small, small-capacity battery power source sufficient to operate it itself, making it possible to make the test device even smaller and lighter.

[0084] Furthermore, when the test device is connected, the disaster prevention receiving panel of the first, second and fourth embodiments stops the polling process of periodically sending a call signal to the fire detector and receiving a response signal using the transmission line, and allocates the transmission line to the transmission of information by the test device. Therefore, it becomes possible to efficiently transmit and collect information stored in the fire detector to the test device via the transmission line without being affected by the polling process of the fire detector from the disaster prevention receiving panel.

[0085] In addition, the disaster prevention receiving panel of the first, second and fourth embodiments detects and warns of a fire based on the reception of a fire interrupt signal transmitted when a fire is detected by a fire detector while the polling process is stopped. Therefore, even if the polling process of the disaster prevention receiving panel is stopped, a fire alarm is output from the disaster prevention receiving panel when a fire is detected by the fire detector, and fire monitoring can be continued reliably even while the test device is collecting information on the fire detector. When a fire is detected by the disaster prevention receiving panel, the information collecting operation by the test device is stopped.

[0086] On the other hand, the test device of the third embodiment detects and warns of fires based on the reception of a fire interrupt signal transmitted when a fire is detected by a fire detector while connected to multiple fire detectors via a line switching unit. Therefore, even if the disaster prevention receiving panel side is disconnected from the transmission line by the line switching unit due to the connection of the test device, a fire alarm is output from the test device when a fire is detected by a fire detector, and fire monitoring can be continued reliably even while the test device is collecting information on the fire detector. Note that when a fire is detected by the test device, the information collecting operation by the test device is stopped.

[0087] In the first to fourth embodiments, the power supply line is composed of a normal power supply line and a test power supply line, and the signal line is a six-wire line including a first power supply line and a first power supply common line constituting the normal power supply line, a second power supply line and a second power supply common line constituting the test power supply line, and a serial signal line and a serial signal common line constituting the transmission line. Therefore, the first connector of the fire detector, the socket of the second connector and the plug of the third connector of the test device, the socket and plug of the fourth connector of the disaster prevention receiving panel, the socket of the fifth connector of the line switching unit of the disaster prevention receiving panel, and the socket of the sixth connector of the line branch unit of the disaster prevention receiving panel all have a six-pin connector structure, which enables simple and easy connection of the test device.

[0088] Furthermore, in the first to fourth embodiments, the disaster prevention receiving panel transmits a predetermined downstream signal to the fire detector and receives a predetermined upstream signal from the fire detector, the test device transmits a downstream signal to the fire detector and receives an upstream signal from the fire detector, and transmits an upstream signal to the disaster prevention receiving panel and receives a downstream signal from the disaster prevention receiving panel, the fire detector receives a downstream signal from the disaster prevention receiving panel or the test device and transmits an upstream signal to the disaster prevention receiving panel or the test device, and the downstream signal is a voltage mode signal that changes the signal voltage of the transmission line, and the upstream signal is a current mode signal that changes the signal current of the transmission line, so that the test device can read out information stored in the fire detector as specified by the downstream signal and receive it as an upstream signal to collect information.

[0089] In addition, the test device can stop the polling process of the fire detector by transmitting, for example, an instruction (command) to stop the polling process as an upstream signal to the disaster prevention receiving panel.

[0090] Specific embodiments will be described below. The specific embodiments shown below are directed to a "tunnel disaster prevention system" in which fire detectors are installed at predetermined intervals along the length of a tunnel and connected to a disaster prevention receiving panel, and the fire detectors "receive and observe radiation energy (infrared energy) from fire flames occurring in the tunnel with a light receiving element in order to detect fires," the "fire detectors" "store predetermined deterioration prediction information," and the "test device" is "a portable device." The explanation will be divided into "first to fourth embodiments of the tunnel disaster prevention system" corresponding to "first to fourth inventions of the disaster prevention system."

[0091] [Specific details of the embodiment] The embodiment of the disaster prevention system will be described in more detail below. The contents will be described in the following parts. a. Tunnel disaster prevention system b. Disaster prevention receiving panel c. Fire detector c1. Location and appearance of fire detectors c2. Functional configuration of fire detector c3. Fire detection by fire detector c4. Determination of signs of deterioration c5. Contamination test C6. Sensitivity test d. First embodiment of tunnel disaster prevention system d1. Connection of the test device on the fire detector side d2. Appearance of the test equipment d3. Functional configuration of the test equipment d4. Test equipment information collection and control e. Second embodiment of tunnel disaster prevention system f.Third embodiment of tunnel disaster prevention system f1. Connection of test equipment to line switching unit f2. Test equipment information collection and control g. Fourth embodiment of tunnel disaster prevention system h. Modifications of the present invention

[0092] [a.Tunnel disaster prevention system] First, the tunnel disaster prevention system will be described with reference to Fig. 1 showing the tunnel disaster prevention system.

[0093] As shown in Fig. 1, an up-bound tunnel 1a and an down-bound tunnel 1b have been constructed as tunnels for expressways. Inside the up-bound tunnel 1a and the down-bound tunnel 1b, fire detectors 12 (12-1)...12 (12-4)...are placed along the walls in the longitudinal direction of the tunnel at intervals of, for example, 25 meters or 50 meters. Note that any one of the fire detectors 12 (12-1)...12 (12-4)...may be referred to as fire detector 12.

[0094] The fire detector 12 has detection areas set on both the left and right sides of the tunnel in the longitudinal direction, and is equipped with two sets of flame detection units that individually monitor either the left or right detection area. The fire detectors are arranged continuously so that the detection areas of the adjacent fire detectors overlap in a mutually complementary manner, and detect fire flames by observing, for example, infrared energy as radiation energy (light energy) from a flame caused by a fire that has broken out within the detection area, and if a fire is determined to exist based on the fire flames, a fire signal is transmitted to the outside.

[0095] Furthermore, the fire detector 12 has a function of determining and storing a deterioration sign of the fire detector based on the non-fire candidate determination result when a non-fire candidate is determined in the fire determination process.

[0096] In addition, the up line tunnel 1a and the down line tunnel 1b are provided with a manual reporting device and an emergency telephone for reporting fires as well as a fire hydrant for extinguishing fires and preventing the spread of fires as part of a disaster prevention system. In addition, water sprays that spray fire water from a water spray head are installed to protect the tunnel structure and inside the ducts from fires, but are not shown in the figure.

[0097] Signal lines 14, including a power line, a test power line, and a transmission line, are drawn from the disaster prevention receiving panel 10 to the up-line tunnel 1a and the down-line tunnel 1b, and a fire detector 12 is connected to the signal lines 14. The tunnel disaster prevention system of the embodiment is an R-type (Record-type) disaster prevention system in which a unique address is set for each line in the fire detector 12. If the address of the fire detector 12 is, for example, an 8-bit address, a maximum of 256 units can be connected to one line.

[0098] In addition, the disaster prevention receiving panel 10 is provided with a fire pump equipment 16, duct cooling pump equipment 18, IG slave station equipment 20, ventilation equipment 22, alarm display board equipment 24, radio rebroadcast equipment 26, television monitoring equipment 28, lighting equipment 30, etc., and except for the IG slave station equipment 20 which is connected by a data transmission line, the other equipment is individually connected to the disaster prevention receiving panel 10 by P-type signal lines. Here, the IG slave station equipment 20 is a communication equipment which connects the disaster prevention receiving panel 10 and remote monitoring and control equipment 32, which is a higher-level equipment provided externally, via a network.

[0099] The ventilation equipment 22 is a facility that gives energy to the air in the tunnel by blowing out a high wind speed from a jet fan installed on the ceiling side of the tunnel, creating a ventilation flow in the longitudinal direction of the tunnel. The alarm display board equipment 24 is a facility that notifies users in the tunnel of abnormalities inside the tunnel by displaying them on an electronic display board. The radio rebroadcast equipment 26 is a facility that enables drivers and others in the tunnel to receive information from the road administrator. The television monitoring equipment 28 is a facility for understanding the situation inside the tunnel when confirming the scale and location of a fire, activating the water spray equipment, and providing evacuation guidance. The lighting equipment 30 is a facility that drives and manages the lighting equipment in the tunnel.

[0100] [b. Disaster prevention receiving panel] Next, the disaster prevention receiving panel will be explained with reference to Fig. 2 showing the functional configuration of the disaster prevention receiving panel.

[0101] 2, the disaster prevention receiving panel 10 includes a panel control unit 34. The panel control unit 34 is a function realized by, for example, executing a program, and uses, as hardware, a computer circuit equipped with a CPU, memory, various input / output ports, etc.

[0102] R-type transmission units 36 (36-1) to 36 (36-n) are provided for the panel control unit 34, and a signal line 14 is drawn out to the outside. The R-type transmission units 36 (36-1) to 36 (36-n) are equipped with an upper transmission unit 48, a power supply unit 50, and a test power supply unit 52, as shown representatively in the R-type transmission unit 36 ​​(36-1). The power supply unit 50 supplies, for example, DC 48V as an operating power source to the fire detector, and is composed of a first power supply line SV1 and a first power supply common line SG1. The test power supply unit 52 supplies, for example, DC 48V as a test power source to the fire detector, and is composed of a second power supply line SV2 and a second power supply common line SG2.

[0103] The upper transmission unit 48 serially transmits various digital signals such as commands and data between the fire detector and the upper transmission unit 48, specifying the address of the fire detector 12, and a serial transmission line SA and a serial transmission common line SB are drawn out as transmission lines. The downstream signal transmitted by the upper transmission unit 48 to the fire detector side is a voltage mode signal that changes the line voltage in response to bits 0 and 1. In contrast, the upstream signal received by the upper transmission unit 48 from the terminal side including the fire detector is a current mode signal that changes the line current in response to bits 0 and 1.

[0104] In this way, the signal line 14 pulled out from the disaster prevention receiving panel 10 is composed of a six-core signal line, including the first power line SV1 and the first power common line SG1 which constitute the power line, the second power line SV2 and the second power common line SG2 which constitute the test power line, and the serial signal line SA and the serial signal common line SB which constitute the transmission line.

[0105] Also, the signal line 14 including six signal lines, the first power line SV1, the first power common line SG1, the second power line SV2, the second power common line SG2, the serial transmission line SA, and the serial transmission common line SB from the R-type transmission unit 36 ​​(36-1), is drawn to the outside via a connector 1010 (fourth connector). The connector 1010 is a 6-pin connector, and a socket 1011 (socket of the fourth connector) of the connector 1010 is arranged on the disaster prevention receiving panel 10 side, and a plug 1012 (plug of the fourth connector) of the connector 1010 is connected to the signal line 14 from the outside, and the plug 1012 is detachably connected to the socket 1011. The connector 1010 of the disaster prevention receiving panel 10 is provided with a waterproof connector the same as that used in a fire detector.

[0106] In addition, the panel control unit 34 is provided with an alarm unit 38 equipped with a speaker, alarm indicator lights, etc., a display unit 40 equipped with an LCD display, a printer, etc., an operation unit 42 equipped with various switches, etc., and a modem 44 connecting the IG child station equipment 20 which communicates with external monitoring equipment, and further with an IO unit 46 connecting the fire pump equipment 16, cooling pump equipment 18, ventilation equipment 22, alarm display board equipment 24, radio rebroadcast equipment 26, television monitoring equipment 28 and lighting equipment 30 shown in Figure 1.

[0107] The panel control unit 34 instructs the R-type transmission unit 36 ​​(36-1) to repeatedly send a "call signal" including a polling command that sequentially specifies the addresses of the fire detectors 12, and when the fire detector receives a "call signal" that matches its own address, it replies with a "response signal" including its own status information.

[0108] In addition, when the panel control unit 34 identifies the address of the fire detector 12 that has determined that there is a fire based on the reception of a "fire interrupt signal" that is sent when the fire detector determines that there is a fire, it controls the alarm unit 38 to output a fire alarm and also instructs the interlocking control of other equipment via the IO unit 46.

[0109] In addition, when the system is started up or at a predetermined cycle during operation, the panel control unit 34 transmits a test signal containing a test instruction command sequentially specifying the addresses of the fire detectors 12, causes the fire detectors to perform sensitivity tests and contamination tests, and controls the fire detectors to return each test result as a response signal. In addition, when a test operation specifying the address of a specific fire detector 12 is performed by the operation unit 42, it is also possible to transmit a test signal to each individual fire detector to cause it to perform a test.

[0110] In addition, when the panel control unit 34 receives a response signal of a sensitivity abnormality warning obtained by a sensitivity test of the fire detector 12, it controls the display unit 40 to issue a sensitivity abnormality warning alarm specifying the address of the fire detector 12, for example, by an alarm sound, a display display, or printing.

[0111] In addition, when the panel control unit 34 receives a response signal of a sensor failure (sensitivity abnormality) obtained by a sensitivity test of the fire detector 12, it controls the display unit 40 to issue a sensor failure alarm (sensitivity abnormality alarm) specifying the address of the fire detector 12, for example, by an alarm sound, a display, or printing.

[0112] In addition, when the panel control unit 34 receives a response signal of a contamination abnormality warning obtained by a contamination test of the fire detector 12, it controls the display unit 40 to issue a contamination abnormality warning alarm specifying the address of the fire detector 12, for example, by an alarm sound, a display display, or printing.

[0113] In addition, when the panel control unit 34 receives a response signal indicating a contamination abnormality obtained by a contamination test of the fire detector 12, it controls the display unit 40 to issue a contamination alarm specifying the address of the fire detector 12, for example, by an alarm sound, a display display, or printing.

[0114] In addition, when the panel control unit 34 receives a sensitivity and dirt abnormality warning signal or an abnormality response signal obtained by the sensitivity test and dirt test of the fire detector 12, it transmits the signal from the modem 44 to the remote monitoring and control equipment 32 via the IG substation equipment 20 shown in Figure 1, and controls the remote monitoring and control equipment 32 to also issue a sensitivity and dirt abnormality alarm.

[0115] [c. Fire detector] Next, the fire detector will be described. In this description, reference will be made to Fig. 3, which shows the fire detector attached to the storage box, and Fig. 4, which shows the functional configuration of the fire detector. Fig. 3(A) shows the front of the storage box, and Fig. 3(B) shows the internal structure of the storage box with the box lid removed.

[0116] 3, the X, Y and Z directions are mutually orthogonal, and specifically, when looking at the front surface on which the light-transmitting window is provided, the X direction is the left-right direction, the Y direction is the up-down direction, and the Z direction is the front-back direction. Also, the +X side in the X direction is the right side, the -X side is the left side, the +Y side in the Y direction is the top side, the -Y side is the bottom side, and the +Z side in the Z direction is the front side, and the -Z side is the rear side.

[0117] (c1. Placement and appearance of fire detectors) As shown in Figures 3(A) and (B), the fire detector 12 (12-1) is attached and fixed inside the box body 6010 of the storage box 60, and a sensor storage section 68 equipped with translucent windows 70R, 70L is exposed to the outside through a detector opening 6030 formed in the box lid 6020.

[0118] The fire detector 12 (12-1) attached and fixed to the storage box 60 has two sets of light-transmitting windows 70R, 70L on the front side of the sensor storage section 68, separated into left and right, and a light receiving element section (sensor section) is arranged inside the sensor storage section 68 corresponding to the positions of the light-transmitting windows 70R, 70L. In addition, two sets of light-transmitting windows 72R, 72L for test light sources that accommodate external test light sources used for soiling tests of the light-transmitting windows 70R, 70L are provided in positions near the light-transmitting windows 70R, 70L where the sensor sections can be seen through. In order to distinguish between the light-transmitting windows 70R, 70L, the light-transmitting window 70R may be called the right-eye light-transmitting window 70R, and the light-transmitting window 70L may be called the left-eye light-transmitting window 70L.

[0119] The fire detector 12 (12-1) is connected to the signal line 14 from the disaster prevention receiving panel 10 via the first connector 1210. Specifically, electric conduits 62 are connected to the lower sides of both the left and right sides of the storage box 60, and a wiring cable 1410 constituting the signal line 14 from the disaster prevention receiving panel 10 is drawn into the electric conduit 62 on the upward side (left side), and a wiring cable 1420 constituting the signal line 14 for connecting the next fire detector 12 (12-2) is drawn out of the electric conduit 62 on the downward side (right side).

[0120] A wiring cable 1410 having six core wires pulled in from the upstream side (left side), a wiring cable 1420 having six core wires pulled out to the downstream side (left side), and a wiring cable 1430 having six core wires pulled out from a first connector 1210 of the fire detector 12 using a waterproof connector are connected in groups of three for each of the six core wires with crimp terminals and covered with a well-known insulating tube 65 known as an RE sleeve, and are further protected by being covered with a vinyl bag 67.

[0121] Here, as shown in FIG. 3(B), the first connector 1210 provided on the fire detector 12 (12-1) has a socket 1211 of the first connector 1210 arranged on the detector side and a plug 1212 of the first connector 1210 arranged on the wiring cable 1430 side, and the plug 1212 of the first connector 1210 is detachably attached to the socket 1211 of the first connector 1210.

[0122] (c2. Functional configuration of fire detector) Next, the functional configuration of the fire detector will be described. As shown in Fig. 4, the fire detector 12 (12-1) is provided with a detector control unit 74, a terminal transmission unit 76, two sets of flame detection units 78R, 78L, a power supply unit 80, a test power supply unit 82, a test light emission driving unit 84, external test light sources 86R, 86L used for a contamination test of the light-transmitting windows 70R, 70L, and internal test light sources 88R, 90R, 88L, 90L used for a sensitivity test of the flame detection units 78R, 78L, and a socket 1211 of a first connector 1210. In order to distinguish between the flame detection units 78R, 78L, the flame detection unit 78R may be called the right flame detection unit 78R, and the flame detection unit 78L may be called the left flame detection unit 78L.

[0123] The detector control unit 74 has a function realized by, for example, executing a program, and as hardware, a computer circuit equipped with a CPU, memory, various input / output ports, etc. is used.

[0124] The terminal transmission unit 76 is connected via the socket 1211 and plug 1212 of the first connector 1210 by the serial transmission line SA and serial transmission common line SB included as transmission lines in the signal line 14, and receives a "downstream signal" in voltage mode from the disaster prevention receiving panel 10 side and transmits an "upstream signal" in current mode to the disaster prevention receiving panel 10 side. Here, the "downstream signal" received by the terminal transmission unit 76 includes a "call signal", a "test start signal", etc., and the "upstream signal" transmitted by the terminal transmission unit 76 includes a "response signal" to the "call signal", a "fire interrupt signal", a "pollution warning signal", a "pollution signal", a "sensitivity abnormality signal", a "deterioration sign signal", etc.

[0125] The power supply unit 80 is connected to the first power line SV1 and the first power common line SG1 constituting the power line of the signal line 14 via the first connector 1210, receives power from the power supply unit 50 of the disaster prevention receiving panel 10 shown in Fig. 2, and supplies a predetermined power supply voltage to, for example, the detector control unit 74, the transmission unit 76, and the flame detection units 78R, 78L. Note that the power supply lines for the flame detection units 78R, 78L are omitted in Fig. 4.

[0126] The test power supply unit 82 is connected via the first connector 1210 to the second power line SV2 and the second power common line SG2 that constitute the test power circuit of the signal line 14, and receives test power from the test power supply unit 52 of the disaster prevention receiving panel 10 shown in Figure 2 and supplies it to the test light emission driving unit 84.

[0127] The test light emission driver 84 is connected to external test light sources 86R, 86L used for contamination testing, as well as internal test light sources 88R, 90R, 88L, 90L used for sensitivity testing, each of which is provided with an LED as a light emitting element of the test light source.

[0128] (c3. Fire detection by fire detector) Next, the fire judgment of the fire detector 12 (12-1) will be described. The flame detection units 78R and 78L are equipped with a sensor unit and an amplification processing unit. For example, in the right flame detection unit 78R, a right light-transmitting window 70R is arranged on the front side of the sensor unit, and infrared energy from the external detection area enters the sensor unit through the right light-transmitting window 70R.

[0129] The right flame detection unit 78R monitors fires, for example, by a three-wavelength flame detection. The sensor unit of the right flame detection unit 78R selectively transmits (passes) infrared rays in the 4.5 μm band, which is the resonance radiation band of CO2 specific to flames, from the infrared energy incident through the right-eye transparent window 70R using an optical wavelength bandpass filter, receives the infrared rays using a light receiving sensor and performs photoelectric conversion, and then performs predetermined processing such as amplification using an amplification processing unit, and outputs the result to the detector control unit 74 as a flame receiving signal (E1R) corresponding to the amount of received light energy.

[0130] In addition, the sensor unit of the right eye inflammation detection unit 78R selectively transmits (passes) infrared energy in the first non-flame wavelength band, for example, the 5.0 μm band, from the infrared energy incident through the right eye transparent window 70R using an optical wavelength bandpass filter, receives the infrared energy using a light receiving sensor and performs photoelectric conversion, and then performs predetermined processing such as amplification using an amplification processing unit, and outputs the signal to the detector control unit 74 as a first non-flame light receiving signal (E2R) corresponding to the amount of received light energy.

[0131] Furthermore, the sensor section of the right eye flame detection unit 78R selectively transmits (passes) infrared energy in a second non-flame wavelength band, for example, infrared energy of 2.3 μm, from the infrared energy incident through the right eye transparent window 70R using an optical wavelength bandpass filter, receives the infrared energy using a light receiving sensor and performs photoelectric conversion, and then performs predetermined processing such as amplification using an amplification processing section, and outputs the signal to the detector control section 74 as a second non-flame light receiving signal (E3R) corresponding to the amount of received light energy.

[0132] The detector control unit 74 is provided with a fire detection function that is realized by executing a program, and detects a fire in multiple stages based on the input flame reception signal (E1R), first non-flame reception signal (E2R), and second non-flame reception signal (E3R), and performs a fire detection in, for example, the following three stages:

[0133] First, when the flame reception signal (E1R) is equal to or exceeds a predetermined threshold, the detector control unit 74 calculates the relative ratio (E1R / E2R) to the first non-flame reception signal (E2R), and when the relative ratio (E1R / E2R) exceeds a predetermined threshold, it determines that the first-stage fire determination conditions are met, determining that there is a fire (fire candidate), and then performs the second-stage fire determination.

[0134] The second stage fire judgment by the detector control unit 74 calculates the relative ratio (E1R / E3R) of the flame reception signal (E1R) to the second non-flame reception signal (E3R), and if the relative ratio (E1R / E3R) exceeds a predetermined threshold, it judges that a fire has occurred as the second stage fire judgment conditions are met.

[0135] Next, the detector control unit 74 performs the third stage of fire judgment. The third stage fire judgment conditions by the detector control unit 74 are to perform a fast Fourier transform (FFT) on the flame reception signal (E1R), analyze the result, calculate the relative ratio of the relative intensity of the low frequency component of 4 Hz or less to the relative intensity of the high frequency component of more than 4 Hz and 8 Hz or less, for example, and if this relativization is equal to or exceeds a predetermined threshold value, it is judged that a fire has occurred as the third stage fire judgment conditions are satisfied, and thus a fire has been judged in all of the first to third fire judgment stages, and the overall situation is judged to be a fire.

[0136] Furthermore, when the first to third stage fire judgment conditions are satisfied consecutively a predetermined number of times, it is determined that a fire has occurred as a predetermined accumulation condition is satisfied, and a control is performed to transmit a fire signal to the disaster prevention receiving panel 10, for example, a control to transmit a "fire interrupt signal." The same is performed in the left eye fire detection unit 78L.

[0137] The multiple-stage fire judgment by the detector control unit 74 is not limited to the above fire judgment, and one or more fire judgment stages may be added, or, for example, any of the above three stages may be omitted to make it two stages, or, for example, it may be four stages including the accumulation judgment stage.

[0138] (c4. Determination of signs of deterioration) Next, the determination of the deterioration sign of the fire detector 12 (12-1) will be described. If a fire is not determined to be a fire in the middle of the above-mentioned three fire determination stages, the detector control unit 74 determines that a deterioration sign has occurred and performs control to count the number of occurrences of the deterioration sign N by a counter.

[0139] Furthermore, when the number of occurrences N of the deterioration sign satisfies a predetermined accumulation condition for deterioration sign judgment, for example, when the number of occurrences N of the deterioration sign reaches a predetermined threshold value Nth, the detector control unit 74 judges (confirms) it as a deterioration sign, transmits a deterioration sign signal to the disaster prevention receiving panel 10, and then performs a predetermined deterioration sign processing. The detector control unit 74 may further perform a predetermined deterioration sign processing when the number of confirmed deterioration signs reaches a predetermined number.

[0140] The predetermined deterioration sign processing by the detector control unit 74 is, for example, processing to stop the transmission of a fire signal, processing to increase the threshold for the number of accumulated fire judgments to make the fire judgment accumulation condition stricter, etc. The deterioration sign processing to stop the transmission of a fire signal is to stop the transmission of a fire signal to prevent the generation of a non-fire alarm, since even if a fire is judged after judging a deterioration sign, it is highly likely that the fire judgment is an erroneous fire judgment due to deterioration. Note that it is also possible to not perform the processing to stop the transmission of a fire signal.

[0141] Furthermore, when the detector control unit 74 receives an internal status request command signal from an external device, for example, a test device, it performs control to generate and transmit deterioration sign information indicating the number of occurrences N of deterioration signs stored up to that point, and the test device is used to evaluate the reliability of the fire detector 12 (12-1) based on the number of occurrences N of failure signs extracted from the acquired failure sign information, and to determine whether the reliability is reliable or has decreased. Note that the decrease in reliability may be divided into multiple stages depending on the degree of decrease, so that, for example, a state of decreased reliability and a state of no reliability can be distinguished.

[0142] The number of occurrences N of signs of deterioration counted by the counter is reset at every predetermined period or when a predetermined period has elapsed since the signs of deterioration were counted. However, the number of occurrences N of signs of deterioration before the reset is stored in the fire detector 12 (12-1) as one piece of the signs of deterioration information.

[0143] (c5. Contamination test) Next, a description will be given of a contamination test function, which is a function of the detector control unit 74 realized by executing a program. When the detector control unit 74 receives a test start signal via the terminal transmission unit 76, it controls the test light emission driving unit 84 to sequentially drive the external test light sources 86R, 86L to emit light and perform a contamination test on the light-transmitting windows 70R, 70L.

[0144] Taking the example of a contamination test of the light-transmitting window 70R, the test light emission driving unit 84 drives the external test light source 86R to emit light, thereby causing simulated flame light equivalent to a fire flame to be incident on the light receiving sensor of the flame detection unit 78R through the light-transmitting window 70R. The simulated flame light from the external test light source 86R contains radiation of 4.4 to 4.5 μm and 5 to 6 μm that are specific to flames and is received by the light receiving sensor of the flame detection unit 78R, and has a fluctuation frequency of 8 to 12 Hz that is specific to flames.

[0145] In addition, the light reception value of the light reception signal obtained in a contamination test when the light-transmitting window 70R is not contaminated at the time of shipment from the factory is stored in memory as a contamination test reference light reception value, and is used to calculate the light attenuation rate obtained in the contamination test.

[0146] The fire detector is embedded in the tunnel wall, and the light reception value (detected light reception value) obtained in the contamination test at the start of the disaster prevention system matches the reference light reception value because there is almost no contamination on the light-transmitting window 70R, and the light attenuation rate calculated from the reference light reception value and the detected light reception value is 0. Then, as the operation period passes and dust and the like adheres to the light-transmitting window 70R and it becomes contaminated, the light attenuation rate gradually increases.

[0147] When the light extinction rate increases in this manner, the detector control unit 74 calculates a correction value which is the reciprocal of the light extinction rate when calculating the light extinction rate through the contamination test, and stores this in memory. Then, the detected light reception value obtained during subsequent operation is divided by the correction value to perform a contamination correction, and a fire is detected based on the contamination-corrected light reception value.

[0148] In addition, the detector control unit 74 presets the light attenuation rate corresponding to the limit at which the aforementioned contamination correction becomes impossible, for example as a predetermined contamination threshold value (=0.5), and if the light attenuation rate obtained in the contamination test is equal to or exceeds the contamination threshold value, it determines that a contamination abnormality has occurred that makes contamination correction of the translucent window 70R impossible, and controls the transmission of a contamination signal to the disaster prevention receiving panel.

[0149] In addition, the detector control unit 74 presets a predetermined contamination warning threshold, for example 0.4, which is a lower attenuation rate than the aforementioned contamination threshold, and when the attenuation rate obtained in the contamination test is equal to or exceeds the contamination warning threshold, it determines that a contamination abnormality is imminent and controls the transmission of a contamination warning signal to the disaster prevention receiving panel.

[0150] (c6. Sensitivity test) Next, a sensitivity test function, which is a function of the detector control unit 74 realized by executing a program, will be described. When the detector control unit 74 receives a test start input signal via the terminal transmission unit 76, it controls the test light emission drive unit 84 to sequentially drive the internal test light sources 88R, 90R, 88L, and 90L to emit light to perform a sensitivity test of the flame detection units 78R and 78L. Note that the order of the contamination test and sensitivity test described above may be any order.

[0151] Taking the sensitivity test of flame detection unit 70R as an example, test light emission drive unit 84 drives internal test light sources 88R, 90R to emit light, thereby causing simulated flame light equivalent to a fire flame to be incident on the light receiving sensor of flame detection unit 78R. The simulated flame light from internal test light sources 88R, 90R contains radiation of 4.4 to 4.5 μm and 5 to 6 μm that are specific to flames and is received by the light receiving sensor of flame detection unit 78R, and has a fluctuation frequency of 8 to 12 Hz that is specific to flames.

[0152] The light reception value of the light reception signal obtained in a sensitivity test at the time of shipment from the factory is stored in memory as the reference light reception value for the sensitivity test. When the fire detector is embedded in the tunnel wall and installed, the light reception value (detected light reception value) obtained in a sensitivity test at the time the disaster prevention system is started up matches the reference light reception value, and the detection sensitivity obtained by dividing the detected light reception value by the reference light reception value is 1. As the operation period passes, the detected light reception value gradually decreases due to the aging of parts, etc.

[0153] When the detection sensitivity is reduced in this way, the detector control unit 74 calculates a correction value which is the reciprocal of the detection sensitivity when calculating the detection sensitivity by the sensitivity test, stores this in memory, and then multiplies the detection light reception value obtained in the subsequent operational state by the correction value to perform sensitivity correction, and detects a fire using the sensitivity-corrected light reception value. In other words, the detection light reception value obtained in the operational state is corrected by the correction value obtained in the above-mentioned contamination test and the correction value obtained in the sensitivity test.

[0154] The detector control unit 74 also presets a predetermined sensitivity threshold, for example 0.5, corresponding to the limit at which the aforementioned sensitivity correction becomes impossible, and when the detection sensitivity determined in the sensitivity test falls below or equal to the sensitivity threshold, it determines that a sensitivity abnormality has occurred, resulting in a failure of the flame detection unit 78R, and instructs the terminal transmission unit 76 to transmit a sensitivity abnormality signal to the disaster prevention receiving panel.

[0155] In addition, the detector control unit 74 may be preset with a predetermined sensitivity prediction threshold value, for example 0.6, which is a detection sensitivity higher than the aforementioned sensitivity threshold value, and if the detection sensitivity obtained in the sensitivity test is equal to or falls below the sensitivity prediction threshold value, it will determine that a sensitivity abnormality that would result in a failure of the flame detection unit 78R is imminent, and will perform control to send a sensitivity abnormality warning signal to the disaster prevention receiving panel.

[0156] A sensitivity test is also performed on the flame detection unit 78L in a similar manner by driving the internal test light sources 88L, 90L to emit light using the test light emission drive unit 84. Furthermore, when the detector control unit 74 has completed the contamination test and the sensitivity test, it instructs the terminal transmission unit 76 to transmit a test completion signal to the disaster prevention receiving panel.

[0157] [d. First embodiment of tunnel disaster prevention system] Next, a first embodiment of a tunnel disaster prevention system in which a test device is connected to a fire detector will be described. In this description, reference will be made to Fig. 5, which shows the first embodiment of a tunnel disaster prevention system in which a test device is connected to a fire detector, Fig. 6, which shows the state in which the lid of the storage box is removed and the test device is connected to the fire detector with a connector in the first embodiment of Fig. 5, Fig. 7, which shows the external appearance of the test device, and Fig. 8, which shows the functional configuration of the test device.

[0158] (d1. Connection of test equipment on the fire detector side) In the first embodiment of the tunnel disaster prevention system, as shown in FIG. 5, a test device 15 is connected to any one of the fire detectors 12 (12-1), 12 (12-2), 12 (12-3), etc., the address of any one of the fire detectors 12 is specified by the test device 15, and information stored in the fire detector, such as deterioration sign information, is collected and saved.

[0159] In FIG. 5, a test device 15 is detachably connected to a fire detector 12 (12-2) which is connected to a signal line 14 extending from a disaster prevention receiving panel 10 by a connector.

[0160] Here, the fire detector 12 (12-1) is connected to the signal line 14 by a first connector 1210. The first connector 1210 is a waterproof connector, and as shown in Fig. 3(B), a socket 1211 of the first connector 1210 is provided on the fire detector side, and a plug 1212 of the first connector 1210 is connected to the signal line side.

[0161] The test device 15 also includes a second connector socket 1510 and a third connector plug 1520 drawn out of the same six-core signal line as the signal line 14. The signal lines of the second connector socket 1510 and plug 1520 are connected to each other within the device. The second connector socket 1510 and the third connector plug 1520 are waterproof connectors like the first connector 1210.

[0162] The test device 15 is connected between the signal line 14 and the fire detector 12 (12-2) by connecting the plug 1212 of the first connector 1210 removed from the fire detector 12 (12-2) to the socket 1510 of the second connector of the test device 15, and also connecting the plug 1520 of the third connector of the test device 15 to the socket 1211 of the first connector of the fire detector 12 (12-2). By such connector connection, the test device 15 is detachably connected between the signal line 14 and the fire detector 12 (12-2). The signal line 14 is also detachably connected to the disaster prevention receiving panel 10 by the socket 1011 and plug 1012 of the fourth connector 1010.

[0163] As shown in Figure 5, the actual work of connecting the test equipment 15 between the signal line 14 and the fire detector 12 (12-2) via a connector involves removing the box lid of the fire detector 12 (12-2) to expose the fire detector 12 (12-2) in the storage box 60, removing the plug 1212 of the first connector 1210 connected to the signal line 14 drawn from the fire detector 12 (12-1) into the storage box 60 from the socket 1211 and connecting it to the socket 1510 of the second connector of the test equipment 15, and also connecting the plug 1520 of the third connector of the test equipment 15 to the socket 1211 of the first connector 1210 of the fire detector 12 (12-2), as shown in Figure 6.

[0164] (d2. Appearance of the test equipment) Next, the external appearance of the test device will be described. As shown in Fig. 7, the test device 15 is a portable device, and is provided with a display 1530 functioning as a display unit, an operation unit 1540 such as a numeric keypad, and a power switch 1550 on the device panel.

[0165] Also, on the side of the test device 15, there are provided a second connector socket 1510 for connecting the test device 15 between any fire detector and the signal line 14, and a third connector plug 1520 drawn out by the same signal line (wiring cable) as the signal line 14 from the disaster prevention receiving panel 10. The length of the signal line connecting the third connector plug 1520 is arbitrary, but is, for example, about 1 meter.

[0166] (d3. Functional configuration of the test equipment) Next, a description will be given of the functional configuration of the test device 15. As shown in Fig. 8, the test device 15 includes a tester control unit 100, an upper transmission unit 102, a terminal transmission unit 104, a power supply unit 106, a display 1530, an operation unit 1540, a storage unit 1560, a battery power supply 108, and a power switch 1550.

[0167] The tester control section 100 is a function realized by, for example, executing a program, and uses, as hardware, a computer circuit equipped with a CPU, a memory, various input / output ports, and the like.

[0168] The upper transmission unit 102 and the terminal transmission unit 104 are connected to the serial transmission line SA and the serial transmission common line SB included in the signal line 14 from the disaster prevention receiving panel via the socket 1510 of the second connector and the plug 1520 of the third connector, and transmit and receive various signals between the disaster prevention receiving panel 10 and the fire detector 12 via serial transmission.

[0169] The upper transmission unit 102 is similar to the upper transmission unit 48 provided in the disaster prevention receiving panel 10 in Fig. 2, and transmits a "downstream signal" in a voltage mode to the fire detector 12 and receives an "upstream signal" in a current mode from the fire detector. The "downstream signal" that the upper transmission unit 102 transmits to the fire detector 12 includes an "information read command signal" that specifies the address of the fire detector 12. In addition, the "upstream signal" that the upper transmission unit 102 receives from the fire detector 12 includes a "stored information signal" such as deterioration prediction information.

[0170] The terminal transmission unit 104 is similar to the terminal transmission unit 76 provided in the fire detector 12 (12-1) in FIG. 4, and transmits an "upstream signal" in a current mode to the disaster prevention receiving panel 10 and receives a "downstream signal" in a voltage mode from the disaster prevention receiving panel 10. The "upstream signal" transmitted by the terminal transmission unit 104 to the disaster prevention receiving panel 10 includes a "polling prohibit command signal" for stopping the polling process of the disaster prevention receiving panel 10. In addition, the "downstream signal" received by the terminal transmission unit 104 from the disaster prevention receiving panel 10 includes an arbitrary "command signal" that instructs the test device 15 from the disaster prevention receiving panel 10 during the test as necessary.

[0171] The power supply unit 106 is connected to the first power line SV1 and the first power supply common line SG1 included as power lines in the signal line 14 via the socket 1510 of the second connector and the plug 1520 of the third connector, receives power from the power supply unit 50 of the disaster prevention receiving panel 10 shown in Fig. 2, and supplies a predetermined power supply voltage to, for example, the tester control unit 100, the upper transmission unit 102, the terminal transmission unit 104, etc. Note that the second power supply line SV2 and the second power supply common line SG2 for the test power supply included in the signal line 14 are not connected because the test equipment 15 does not require a test power supply.

[0172] The battery power source 108 is rechargeable and is connected in parallel to a first power line SV1 and a first power common line SV2 from a plug 1510 of the second connector and a socket 1520 of the third connector for the power source unit 106, and a power switch 1550 is inserted and connected to the first power line SV1, which is the positive side.

[0173] Here, as shown in FIG. 5, even if the test device 15 is connected between the fire detector 12 (12-2) and the signal line 14 via a connector, the power supply from the disaster prevention receiving panel 10 to all the fire detectors connected to the signal line 14 is maintained, and there is no need to provide the test device 15 with a power supply unit equivalent to that of the disaster prevention receiving panel 10. As a result, the test device 15 becomes small and lightweight, and it is possible to make the test device 15 portable.

[0174] In addition, when the test equipment 14 is connected between the signal line 14 and the fire detector 12 (12-2) via a connector, the fire detector 12 (12-2) whose connector is detached will be restarted by disconnecting the power supply, but the power supply to all other fire detectors is maintained even when the test equipment 15 is connected via a connector, so that restarts due to disconnection of the power supply to the fire detector 12 during operation are kept to a minimum, and the occurrence of start-up failures of the fire detector 12 due to disconnection of the power supply can be suppressed.

[0175] Furthermore, when the test device 15 is disconnected from between the fire detector 12 (12-2) and the signal line 14, the test device 15 operates by receiving power from the battery power supply 100. Therefore, the battery power supply 108 does not need to supply power to the fire detector, so it may be a small battery power supply with a small power capacity that allows the test device 15 to operate independently.

[0176] With the test device 15 connected between the signal line 14 and the fire detector 12 (12-2) via a connector, the tester control unit 100 controls the transmission of an "information read command signal" specifying the address of the fire detector 12 (12-2), the reception of a "stored information signal" including specified information such as deterioration prediction information stored in the addressed fire detector 12 (12-2), and the storage of the information in the memory unit 1560.

[0177] In addition, since the upper transmission unit 102 of the test device 15 is connected to all of the fire detectors 12 via the serial transmission line SA and serial transmission common line SB included in the signal line 14, the tester control unit 100 is able to control the reading of the deterioration prediction information stored in each of the fire detectors and the storage unit 1560 by sending an “information read command signal” that sequentially specifies the addresses of not only the fire detector 12 (12-2) to which the test device 15 is connected, but also, for example, other fire detectors 12 (12-1), 12 (12-3), etc. that are located before and after it.

[0178] Furthermore, when the power switch 1550 is turned on while the test device 15 is connected between the signal line 14 and the fire detector 12 (12-2) via a connector, the tester control unit 100 transmits a "polling prohibit command signal" from the terminal transmission unit 104 to the disaster prevention receiving panel 10, and controls the disaster prevention receiving panel 10 to stop the polling process that has been performed up until then, which periodically transmits a call signal to the fire detector 12 and receives a response signal. Therefore, the test device 15 is able to efficiently transmit and collect information stored in the fire detector 12 to the test device 15 via the transmission line (serial transmission line SA and serial transmission common line SB) without being affected by the serial transmission band limit caused by the polling process from the disaster prevention receiving panel 10 to the fire detector 12.

[0179] Here, when the disaster prevention receiving panel 10 receives a "fire interrupt signal" transmitted when a fire is detected by the fire detector 12 while the polling process is stopped by the "polling stop command signal" from the test device 15, the disaster prevention receiving panel 10 releases the stop of the polling process, and performs control to identify the address of the fire detector 12 that has issued a fire alert by transmitting a "group search command signal" and an "intra-group search command signal", and to output a fire alarm. In this case, the test operation, including the control of the test device 15 to read information from the fire detector 12, is forcibly terminated. The method for forcibly terminating the test operation by the test device 15 is arbitrary, but for example, the test operation is forcibly terminated when the upper transmission unit 102 determines that a fire interrupt signal has been received.

[0180] (d4. Test equipment information collection control) Next, the information collection control of the test device 15 connected between the signal line and the fire detector 12 (12-2) as shown in Fig. 5 will be described. In this description, reference will be made to Fig. 9, which is a flowchart showing the information collection control of the test device in the first embodiment of Fig. 5.

[0181] As shown in FIG. 5, when the power switch 1550 of the test device 15 is turned on while the test device 15 is connected between the signal line 14 and the fire detector 12 (12-2) via a connector, operation begins. As shown in FIG. 9, the tester control unit 100 of the test device 15 sends a "polling prohibition command signal" to the disaster prevention receiving panel 10, prohibiting the polling process that the disaster prevention receiving panel 10 had been performing up until then, in which the addresses of the fire detectors 12 are sequentially designated, a call signal is sent, and a response signal indicating the status of the fire detector 12 is returned (step S1).

[0182] Next, the address of the target of information collection, for example, the fire detector 12 (12-1), is specified by the operation unit of the test device 15 (step S2), and an "information read command signal" including the address as a destination is transmitted (step S3).

[0183] When an "information read signal" including stored information, for example, deterioration prediction information, is transmitted from, for example, a fire detector 12 (12-2) that has been addressed in response to the transmission of this "information read command signal," reception begins (step S4).

[0184] While receiving the "information read signal," the reception of a "fire interrupt signal" transmitted when a fire is detected by any of the fire detectors 12 is monitored (step S5). If it is not determined that a "fire interrupt signal" has been received (No in step S5), the end of information reception is monitored. If it is not terminated (No in step S6), the reception and monitoring of information and the fire interrupt signal are repeated (steps S4, S5). If it is determined that information reception has ended (Yes in step S6), the received information is displayed and saved (step S7).

[0185] Next, if there is no operation to end information collection (No in step S8), the address of the next fire detector 12 is specified and information collection is performed in the same manner (steps S2 to S7), and when it is determined that information collection has ended (Yes in step S8), the information collection control by the test device 15 is terminated.

[0186] On the other hand, if it is determined that a "fire interrupt signal" has been received during the reception of information (Yes in step S5), the information collection is forcibly terminated (step S9), and the information collection control by the test device 15 is terminated.

[0187] In addition, the disaster prevention receiving panel 10, which had prohibited polling processing by sending the "polling prohibition command signal," lifts the prohibition of polling processing upon receiving the fire interrupt signal, and, as described above, sequentially sends a "group search command signal" and an "intra-group search command signal" to identify the address of the fire detector 12 that detected the fire, and outputs a fire alarm.

[0188] [e. Second embodiment of tunnel disaster prevention system] Next, a second embodiment of the tunnel disaster prevention system in which a test device is connected to the disaster prevention receiving panel side will be described. In this description, reference will be made to Fig. 10 showing the second embodiment of the tunnel disaster prevention system in which a test device is connected to the disaster prevention receiving panel side.

[0189] As shown in FIG. 10, the second embodiment of the tunnel disaster prevention system has a test device 15 detachably connected via a connector to a connection site of a fourth connector 1010 that pulls out a signal line 14 from a disaster prevention receiving panel 10.

[0190] As a result, the test device 15 receives power from the disaster prevention receiving panel 10 via the power supply line (the first power supply line SV1 and the first power supply common line SG1) included in the signal line 14.

[0191] In addition, the test device 15 is connected to multiple fire detectors 12 (12-1), 12 (12-2), 12 (12-3), etc. via transmission lines (serial transmission line SA and serial transmission common line SB) included in the signal line 14, and the test device 15 specifies the address of any fire detector 12 and collects and saves information stored in the fire detector 12, such as deterioration prediction information.

[0192] Furthermore, since the test device 14 is connected to the disaster prevention receiving panel 10 via transmission lines (serial transmission line SA and serial transmission common line SB) included in the signal line 14, it is possible to send a "polling prohibition command signal" to the disaster prevention receiving panel 10 to prohibit polling processing.

[0193] To connect the test device 15 using the fourth connector 1010 of the disaster prevention receiving panel 14, the plug 1012 of the fourth connector 1010 removed from the disaster prevention receiving panel 10 is connected to the socket 1510 of the second connector of the test device 15, and the plug 1520 of the third connector of the test device 15 is connected to the socket 1011 of the fourth connector of the disaster prevention receiving panel 10. By connecting the connectors in this way, the test device 15 is detachably connected between the disaster prevention receiving panel 10 and the signal line 14.

[0194] The test device 15 has the appearance shown in Fig. 7 and the functional configuration shown in Fig. 8, and therefore the description thereof will be omitted. Also, as shown in Fig. 10, the information collection control of the test device 15 connected between the disaster prevention receiving panel 10 and the signal line 14 is the same as that of the first embodiment shown in Fig. 9, and therefore the description thereof will be omitted.

[0195] According to the second embodiment of the tunnel disaster prevention system, when the test device 15 is connected between the disaster prevention receiving panel 10 and the signal line 14 via a connector, the power supply to the fire detectors 12 (12-1), 12 (12-2), 12 (12-3) connected to the signal line 14 is temporarily cut off, but after the test device 15 is connected, the power supply from the disaster prevention receiving panel 10 is maintained, and it is not necessary to provide a power supply unit equivalent to that of the disaster prevention receiving panel 10 in the test device 15, and the test device 15 is small and lightweight, making it possible to make a portable test device 15. Note that when the signal line 14 is disconnected from the disaster prevention receiving panel 10 by the connector, a failure alarm is output as a terminal failure because a response signal from the fire detector is not received in response to a call signal associated with the polling process, but this is automatically restored by connecting the test device 15 via a connector as shown in FIG. 10.

[0196] In addition, since the test device 14 operates by receiving power from the disaster prevention receiving panel 10 and only needs to be equipped with a small, small-capacity battery power source sufficient to operate it itself, the test device 15 can be made even smaller and lighter.

[0197] In addition, the test device 15 connected via a connector between the disaster prevention receiving panel 10 and the signal line 14 is connected to all of the fire detectors 12 (12-1), 12 (12-2), 12 (12-3), etc. via transmission lines included in the signal line 14, and by designating the address of any fire detector 12 and instructing the reading of information, it is possible to collect and confirm the information stored in the fire detector 12.

[0198] [f. Third embodiment of tunnel disaster prevention system] Next, a third embodiment of the tunnel disaster prevention system in which a test device is connected to the line switching unit of the disaster prevention receiving panel will be described. In this description, reference will be made to Fig. 11 showing the third embodiment of the tunnel disaster prevention system in which a test device is connected to the line switching unit on the disaster prevention receiving panel side, Fig. 12 showing the circuit configuration of the line switching unit in Fig. 11, and Fig. 13 which is a flowchart showing information collection control of the test device in the third embodiment of Fig. 11.

[0199] (f1. Connection of test equipment to line switching unit) In the third embodiment of the tunnel disaster prevention system, as shown in Fig. 11, a line switching unit 110 is provided in a disaster prevention receiving panel 10. The line switching unit 110 is provided with a fourth connector 1010 and a socket 1100 of a fifth connector. A signal line 14 is drawn out from the fourth connector 1010, and fire detectors 12 (12-1), 12 (12-2), 12 (12-3), etc. are connected to it. A plug 1520 of a third connector of a test device 15 is connected to the socket 1100 of the fifth connector.

[0200] The line switching unit 110 fixedly connects the power line (first power line SV1 and first power common line SG1) from the power supply unit 50 (see FIG. 2) in the disaster prevention receiving panel 10 to the fourth connector 1010 and the socket 1100 of the fifth connector. Note that the test power line (second power line SV2 and second power common line SG2) from the test power supply unit 52 (see FIG. 2) in the disaster prevention receiving panel 10 is fixedly connected only to the fourth connector 1010.

[0201] In addition, when the test equipment 15 is connected, the line switching unit 110 disconnects the transmission line (serial transmission line SA and serial transmission common line SB) connected from the upper transmission unit 48 (see Figure 2) in the disaster prevention receiving panel 10 to the fourth connector 1010 from the upper transmission unit 48 and switches and connects it to the socket 1100 of the fifth connector, i.e., the test equipment 15 side.

[0202] The configuration of the line switching unit 110 of the disaster prevention receiving panel 10 is arbitrary, but for example, it has a circuit configuration shown in Fig. 12. The line switching unit 110 is provided with a socket 1100 of a fifth connector, and a first power supply line SV1 and a first power supply common line SG1 for a fourth connector 1010 are branched and connected.

[0203] The line switching unit 110 is provided with a switching circuit 112 having two change-over switches 114, 116, which switch-connect the serial signal line SA and the serial signal common line SB from the fourth connector 1010 to the upper transmission unit 48 (see FIG. 2) side in the disaster prevention receiving panel 10 or the socket 1100 side of the fifth connector. The change-over switches 114, 115 may have any switching structure, but may be manual change-over switches that are switched by a switch knob or the like, for example.

[0204] During operation of the tunnel disaster prevention system, the change-over switches 114, 116 provided in the switching circuit 112 are switched to the change-over contact a as shown in the figure, and the serial signal line SA and the serial signal common line SB from within the disaster prevention receiving panel 10 are connected to the fire detector 12 side via the fourth connector 1010.

[0205] 11, when the plug 1520 of the third connector of the test device 15 is connected to the socket 1100 of the fifth connector of the line switching unit 110, the changeover switches 114 and 116 provided in the changeover circuit 112 are switched to the changeover contact b, and the serial signal line SA and the serial signal common line SB from the fourth connector 1010 are disconnected from the inside of the disaster prevention receiving panel 10 and connected to the socket 1100 side of the fifth connector, that is, the test device 15 side. As a result, the serial signal line SA and the serial signal common line SB from the test device 15 are connected to the fire detectors 12 (12-1), 12 (12-2), 12 (12-3),...

[0206] Therefore, in the third embodiment of the tunnel disaster prevention system, the test device 15 is connected to the line switching unit 110 of the disaster prevention receiving panel 10 via a connector, and the line switching unit 110 simply disconnects the transmission line from the disaster prevention receiving panel 10 side and switches it to the test device 15 side.Since the test device 15 is connected to all fire detectors via the transmission line, it is possible to collect and confirm the information stored in any fire detector 12 by specifying the address and instructing to read the information from the fire detector 12.

[0207] In addition, the line switching unit 110 of the disaster prevention receiving panel 10 connects the power supply to the fire detectors 12(12-1), 12(12-2), 12(12-3)... via the power lines (first power line SV1 and first power common line SG11, and second power line SV2 and second power common line SG2) included in the signal line 14 in a fixed manner without switching. Therefore, even if a test device 15 is connected to the line switching unit 110 of the disaster prevention receiving panel 10, the power supply to the fire detectors 12(12-1), 12(12-2), 12(12-3)... is not disconnected and continues, making it possible to prevent start-up failures of the fire detectors 12 due to disconnection of the power supply.

[0208] In addition, since the test device 15 operates by receiving power from the disaster prevention receiving panel 10 and only needs to be equipped with a small, small-capacity battery power source sufficient to operate it itself, the test device 15 can be made even smaller and lighter.

[0209] In addition, during testing with the test device 15 connected to the line switching unit 110, the transmission line to the disaster prevention receiving panel 10 is disconnected from the fire detector side, so the disaster prevention receiving panel 10 cannot receive the fire interrupt signal sent by the fire detector that detected a fire and cannot issue an alarm.

[0210] Therefore, when the test device 15 of the third embodiment receives a "fire interrupt signal" transmitted when a fire is detected by a fire detector 12 while connected to the fire detectors 12 (12-1), 12 (12-2), 12 (12-3) via the line switching unit 110, the test device 15 transmits a "group search command signal" and an "intra-group search command signal" to identify the address of the fire detector 12 that detected the fire and output a fire alarm. Therefore, even when the test device 15 is collecting information stored in the fire detector 12, it is possible to reliably output a fire alarm.

[0211] (f2. Test equipment information collection control) Next, as shown in Fig. 11, the information collection control of the test device 15 connected to the line switching unit 110 of the disaster prevention receiving panel 10 will be described. In this description, reference will be made to Fig. 13, which is a flowchart showing the information collection control of the test device in the third embodiment of Fig. 11.

[0212] As shown in FIG. 11, when the test device 15 is connected to the line switching unit 110 of the disaster prevention receiving panel 10 via a connector, operation begins when the power switch 1550 of the test device 15 is turned on. As shown in FIG. 13, the address of the target device for information collection, for example, the fire detector 12 (12-1), is specified using the operation unit of the test device 15 (step S11), and an "information read command signal" including the address as the destination is transmitted (step S12).

[0213] When an "information read command signal" is sent from, for example, a fire detector 12 (12-1) that has been addressed in response to the transmission of the "information read command signal," an "information read signal" containing stored information, for example, deterioration prediction information, is transmitted, and reception begins (step S13).

[0214] While receiving the "information read signal," the reception of a "fire interrupt signal" transmitted when a fire is detected by any of the fire detectors 12 is monitored (step S14). If it is not determined that a "fire interrupt signal" has been received (No in step S14), the end of information reception is monitored. If it is not terminated (No in step S15), the reception and monitoring of information and the fire interrupt signal are repeated (steps S13, S14). If it is determined that information reception has ended (Yes in step S15), the received information is displayed and saved (step S16).

[0215] Next, if there is no operation to end information collection (No in step S17), the address of the next fire detector 12 is specified and information collection is performed in the same manner (steps S11 to S16), and when it is determined that information collection has ended (Yes in step S17), control of information collection by the test device 15 is terminated.

[0216] On the other hand, if it is determined that a "fire interrupt signal" has been received while receiving information (Yes in step S14), a "group search command signal" is sent to search for the group that includes the fire detector that sent the "fire interrupt signal" (step S18), and then a group search command signal is sent that sequentially specifies the addresses of the detectors in the searched group (step S19), so that the address of the fire detector 12 that issued the fire alarm is identified and a fire alarm is output from the test device 15.

[0217] [g. Fourth embodiment of tunnel disaster prevention system] Next, a fourth embodiment of the tunnel disaster prevention system in which a test device is connected to a line branching part of a disaster prevention receiving panel will be described. In this description, reference will be made to Fig. 14 showing the fourth embodiment of the tunnel disaster prevention system in which a test device is connected to a line branching part on the disaster prevention receiving panel side, and Fig. 15 showing the circuit configuration of the line branching part of Fig. 14.

[0218] In the fourth embodiment of the tunnel disaster prevention system, as shown in Fig. 14, a line branching section 120 is provided in a disaster prevention receiving panel 10. The line branching section 120 is provided with a fourth connector 1010 and a socket 1200 of a sixth connector. A signal line 14 is drawn out from the fourth connector 1010, and fire detectors 12 (12-1), 12 (12-2), 12 (12-3), etc. are connected to it. A plug 1520 of a third connector of a test device 15 is connected to the socket 1200 of the sixth connector.

[0219] The line branching section 120 branches and fixedly connects the power line (first power line SV1 and first power common line SG1) and transmission line (serial transmission line SA and serial transmission common line SB) included in the signal line 14 pulled out from the connector 1010 to the socket 1200 side of the sixth connector, i.e., the test equipment 15 side, within the disaster prevention receiving panel 10.

[0220] The configuration of the line branching unit 120 of the disaster prevention receiving panel 10 is arbitrary, but for example, it has a circuit configuration shown in Fig. 15. The line branching unit 120 branches and connects four lines, the first power supply line SV1, the first power supply common line SG1, the second power supply line SV2, the second power supply common line SG2, the serial signal line SA, and the serial signal common line SB, out of six lines, the first power supply line SV1, the first power supply common line SG1, the serial signal line SA, and the serial signal common line SB, to a socket 1200 of the sixth connector.

[0221] As shown in FIG. 14, when the plug 1520 of the third connector of the test device 15 is connected to the socket 1200 of the sixth connector of the line branching section 120, the test device 15 receives power supply from the first power line SV1 and the first power supply common line SG1 via the line branching section 120 and operates. In addition, the test device 15 is connected to the fire detectors 12 (12-1), 12 (12-2), 12 (12-3)... via the serial signal line SA and the serial signal common line SB via the line branching section 120, and is also connected to the disaster prevention receiving panel 10.

[0222] The test device 15 has the appearance shown in Fig. 7 and the functional configuration shown in Fig. 8, and therefore the description thereof will be omitted. Also, as shown in Fig. 14, the information collection control of the test device 15 connected to the line branching section 120 of the disaster prevention receiving panel 10 via a connector is the same as that of the first embodiment shown in Fig. 9, and therefore the description thereof will be omitted.

[0223] In such a fourth embodiment of the tunnel disaster prevention system, by simply connecting the test device 15 to the line branch section 120 of the disaster prevention receiving panel 10 via a connector, the test device 15 is connected to all fire detectors via the transmission line, so that by specifying the address of any fire detector 12 and issuing a read command, it is possible to collect and confirm the information stored in the fire detector 12.

[0224] In addition, the line switching unit 110 of the disaster prevention receiving panel 10 connects the power supply to the fire detectors 12(12-1), 12(12-2), 12(12-3)... via the power lines (first power line SV1 and first power common line SG1, and second power line SV2 and second power common line SG2) included in the signal line 14 in a fixed manner without switching. Therefore, even if a test device 15 is connected to the line branching unit 110 of the disaster prevention receiving panel 10, the power supply to the fire detectors 12(12-1), 12(12-2), 12(12-3)... is not disconnected and continues, making it possible to prevent start-up failures of the fire detectors 12 due to disconnection of the power supply.

[0225] In addition, the test device 15 operates by receiving power from the disaster prevention receiving panel 10 and only requires a small, small-capacity battery power source sufficient to operate it itself, making it possible to make the test device 15 even smaller and lighter.

[0226] [j. Modifications of the present invention] Modifications of the disaster prevention system according to the present invention will now be described. In addition to the above-described embodiment, the disaster prevention system according to the present invention includes the following modifications.

[0227] (Fire detector) The above embodiment takes a three-wavelength fire detector as an example, but other systems may be used. For example, it may be a two-wavelength fire detector that detects a fire and determines signs of deterioration based on a light receiving signal in a wavelength band having a central wavelength of 4.5 μm and a light receiving signal in a wavelength band having a central wavelength of 5.0 μm.

[0228] In the above embodiment, signs of deterioration are judged based on the fire judgment of the fire detector 12, but the present invention is not limited to this. When a sensitivity test and a dirt test are performed, the power supply voltage and current consumption (power supply current) to each circuit block during the test may be detected and stored in memory, and then the average values ​​of the multiple power supply voltages and current consumptions stored in memory may be calculated as the internal voltage and current consumption of each circuit block, and signs of deterioration may be judged from changes in the measured internal voltage or current consumption.

[0229] (others) Furthermore, the present invention is not limited to the above-described embodiment, but includes appropriate modifications that do not impair the objects and advantages of the present invention, and is not limited by the numerical values ​​shown in the above-described embodiment. [Explanation of symbols]

[0230] 1a: Up line tunnel 1b: Down line tunnel 10: Disaster prevention receiving panel 1010: 4th connector 1011: Socket for the 4th connector 1012: 4th connector plug 12, 12(12-1)~12(12-4): Fire detector 1210: First connector 1211: Socket for the first connector 1212: Plug of the first connector 14: Signal line 1410, 1420, 1430: Wiring cables 15: Test equipment 1510: Socket for the second connector 1520: Third connector plug 1530: Display 1540:Operation unit 1550: Power switch 16: Fire pump equipment 18: Cooling pump equipment 20:IG slave station equipment 22: Ventilation equipment 24: Alarm display board equipment 26: Radio rebroadcasting equipment 28: TV surveillance equipment 30: Lighting equipment 32: Remote monitoring and control equipment 34: Panel control unit 36(36-1)~36(36-n): R-type transmission unit 38: Alarm section 40: Display section 42:Operation unit 44: Modem 46: IO Department 48,102: Upper transmission section 50: Power supply section 52: Test power supply section 60: Storage box 6010: Box body 6020: Box lid 6030: Detector aperture 62:Electrical conduit 65: Insulating tube 67: Plastic bag 68: Sensor storage section 70R,70L: Translucent window 72R, 72L: Light-transmitting window for test light source 74: Detector control unit 76,104: Terminal transmission section 78R, 78L: Flame detector 80: Power supply section 82: Test power supply section 84: Test light emission driver 86R, 86L: External test light source 88R, 88L, 90R, 90L: Internal test light source 100: Tester control unit 102: Upper transmission section 104: Terminal transmission unit 106: Power supply section 108:Battery power supply 110: Line switching unit 1100: 5th connector socket 112: Line branching section 114, 116: Changeover switch 120: Line branching section 1200: 6th connector socket

Claims

1. A disaster prevention system that monitors for abnormalities including fires by connecting a plurality of fire detectors in parallel to a signal line from a disaster prevention receiving panel, the fire detectors detecting fires in a monitoring area, The signal lines include a power line and a transmission line; the fire detector is detachably connected to the signal line via a connector, a test device is detachably connected between the signal line and any one of the fire detectors via the connector, and power is supplied to the test device via the power line and the test device is connected to the plurality of fire detectors via the transmission line; A disaster prevention system characterized in that the test device receives and stores information detected by the specified fire detector.

2. The disaster prevention system according to claim 1, the fire detector is connected to the signal line by a first connector; the test device includes a socket of a second connector and a plug of a third connector that is led out on the same signal line as the signal line; A disaster prevention system characterized by connecting the plug of the first connector removed from any of the fire detectors to the socket of the second connector of the test device and connecting the plug of the third connector of the test device to the socket of the first connector of the fire detector, thereby removably connecting the test device between the signal line and the fire detector.

3. A disaster prevention system that monitors for abnormalities including fires by connecting a plurality of fire detectors in parallel to a signal line from a disaster prevention receiving panel, the fire detectors detecting fires in a monitoring area, The signal lines include a power line and a transmission line; the fire detector is detachably connected to the signal line via a connector, In a state where the test device is detachably connected via a connector to a connector connection portion of the signal line to the disaster prevention receiving panel, power is supplied to the test device via the power line and the test device is connected to the plurality of fire detectors via the transmission line; A disaster prevention system characterized in that the test device receives and stores information detected by the specified fire detector.

4. In the disaster prevention system according to claim 3, the fire detector is connected to the signal line by a first connector; the test device includes a socket of a second connector and a plug of a third connector that is led out on the same signal line as the signal line; The disaster prevention receiving panel is detachably connected to the signal line by a fourth connector, A disaster prevention system characterized by the fact that the test device is detachably connected to the connection point of the signal line to the disaster prevention receiving panel by connecting the plug of the fourth connector removed from the disaster prevention receiving panel to the socket of the second connector of the test device and connecting the plug of the third connector of the test device to the socket of the fourth connector of the disaster prevention receiving panel.

5. A disaster prevention system that monitors for abnormalities including fires by connecting a plurality of fire detectors in parallel to a signal line from a disaster prevention receiving panel, the fire detectors detecting fires in a monitoring area, The signal lines include a power line and a transmission line; the fire detector is detachably connected to the signal line via a connector, The disaster prevention receiving panel includes a line switching unit that connects a power line included in the signal line to the test device and switches and connects a transmission line from the fire detector side to the disaster prevention receiving panel side or the test device side, In a state where the signal line is switched and connected to the test device side by the line switching unit, the test device is connected to the line switching unit via a connector, thereby supplying power to the test device via the power line and connecting the test device to the plurality of fire detectors via the transmission line, A disaster prevention system characterized in that the test device receives and stores information detected by the specified fire detector.

6. The disaster prevention system according to claim 5, the fire detector is connected to the signal line by a first connector; the test device includes a socket of a second connector and a plug of a third connector that is led out on the same signal line as the signal line; The disaster prevention receiving panel includes a fourth connector for connecting a signal line on the fire detector side and a socket for a fifth connector of the line switching unit for connecting a signal line on the test device side, The line switching unit of the disaster prevention receiving panel includes a changeover switch circuit that switches the transmission line from the fourth connector to a transmission line to a transmission unit in the disaster prevention receiving panel or a transmission line to a socket of the fifth connector, The plug of the third connector of the test device is connected to the socket of the fifth connector of the line switching unit, thereby removably connecting the test device to the line switching unit of the disaster prevention receiving panel, A disaster prevention system characterized in that the test device receives and stores information detected by the specified fire detector.

7. A disaster prevention system that monitors for abnormalities including fires by connecting a plurality of fire detectors in parallel to a signal line from a disaster prevention receiving panel, the fire detectors detecting fires in a monitoring area, The signal lines include a power line and a transmission line; the fire detector is detachably connected to the signal line via a connector, The disaster prevention receiving panel includes a line branching section that connects a power supply line included in the signal line to the test device and connects a transmission line from the fire detector side to the disaster prevention receiving panel side or the test device side, With the signal line connected to the test device side via the line branching section, the test device is connected to the line branching section via a connector, thereby supplying power to the test device via the power line and connecting the test device to the plurality of fire detectors via the transmission line; A disaster prevention system characterized in that the test device receives and stores information detected by the specified fire detector.

8. The disaster prevention system according to claim 7, the fire detector is connected to the signal line by a first connector; the test device includes a socket of a second connector and a plug of a third connector that is led out on the same signal line as the signal line; The disaster prevention receiving panel includes a fourth connector for connecting a signal line on the fire detector side and a socket for a sixth connector of the line branching portion for connecting a signal line on the test device side, The line branching unit of the disaster prevention receiving panel branches and connects a power line and a transmission line from a transmission unit in the disaster prevention receiving panel to the fourth connector to a socket of the sixth connector, The test device is detachably connected to the line branching portion of the disaster prevention receiving panel by connecting a plug of the third connector of the test device to a socket of the sixth connector of the line branching portion, A disaster prevention system characterized in that the test device receives and stores information detected by the specified fire detector.

9. In the disaster prevention system according to any one of claims 1, 3 and 7, A disaster prevention system characterized in that, when the test equipment is connected, the disaster prevention receiving panel stops the polling process of periodically sending a call signal to the fire detector using the transmission line and receiving a response signal, and allocates the transmission line to the transmission of information by the test equipment.

10. In the disaster prevention system according to any one of claims 1, 3 and 7, A disaster prevention system characterized in that the disaster prevention receiving panel detects a fire and issues an alarm based on the reception of a fire interrupt signal transmitted when a fire is detected by the fire detector while the polling process is stopped.

11. The disaster prevention system according to claim 5, A disaster prevention system characterized in that the testing device, while connected to the multiple fire detectors via the line switching unit, detects fires and issues an alarm based on receiving a fire interrupt signal transmitted when a fire is detected by the fire detector.

12. In the disaster prevention system according to any one of claims 1, 3, 5 and 7, The power supply circuit is composed of a normal power supply circuit and a test power supply circuit, The signal line is a first power supply line and a first power supply common line constituting the normal power supply circuit; a second power supply line and a second power supply common line constituting the test power supply circuit; a serial signal line and a serial signal common line constituting the transmission line; A disaster prevention system comprising six wires.

13. In the disaster prevention system according to any one of claims 1, 3, 5 and 7, The disaster prevention receiving panel transmits a predetermined downstream signal to the fire detector and receives a predetermined upstream signal from the fire detector, The test device transmits the downstream signal to the fire detector and receives the upstream signal from the fire detector, and transmits the upstream signal to the disaster prevention receiving panel and receives the downstream signal from the disaster prevention receiving panel; A disaster prevention system characterized in that the fire detector receives the downstream signal from the disaster prevention receiving panel or the test device and transmits the upstream signal to the disaster prevention receiving panel or the test device.

14. The disaster prevention system according to claim 13, the downstream signal is a voltage mode signal that changes a signal voltage of the transmission line; A disaster prevention system, wherein the upstream signal is a current-mode signal that changes the signal current of the transmission line.

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