Smoke Monitoring System

Abstract

To enable a first smoke sensor that requires a smoke alarm board and a second smoke sensor that does not require a smoke alarm board to be collectively monitored using a monitoring device.SOLUTION: A smoke monitoring system 10 includes: a smoke alarm board 100; a subordinate smoke sensor 200 connected to the smoke alarm board 100 via a first signal line 500; an independent smoke sensor 300; and a monitoring device 400 connected to the smoke alarm board 100 and the independent smoke sensor 300 via a second signal line 510. The subordinate smoke sensor 200 detects smoke in surroundings, determines an alarm level according to the smoke detection result, and transmits a determination result to the smoke alarm board 100. The smoke alarm board 100 transmits the determination result received from the subordinate smoke sensor 200 to the monitoring device 400. The independent smoke sensor 300 detects smoke in surroundings, determines an alarm level according to the smoke detection result, and transmits the determination result to the monitoring device 400. The monitoring device 400 displays the determination results received from the independent smoke sensor 300 and the smoke alarm board 100 on a display unit.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a smoke monitoring system. [Background technology]

[0002] BACKGROUND ART Systems that use smoke detectors to detect fires are known (for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4381767 [Patent Document 2] Special Publication No. 2020-533726 Summary of the Invention [Problem to be solved by the invention]

[0004] There are two types of smoke sensors: slave smoke sensors that require a smoke alarm panel, and independent smoke sensors that do not. Slave smoke sensors and independent smoke sensors may be mixed within a single smoke monitoring system. However, while slave smoke sensors can be monitored using a smoke alarm panel, independent smoke sensors cannot be monitored using a smoke alarm panel. Therefore, slave smoke sensors and independent smoke sensors must be monitored separately at the location where the smoke alarm panel is installed and at the location where each independent smoke sensor is installed, and they cannot be monitored together.

[0005] An object of the present invention is to enable a first smoke sensor that requires a smoke alarm panel and a second smoke sensor that does not require a smoke alarm panel to be monitored collectively using a monitoring device. [Means for solving the problem]

[0006] One aspect of the present invention provides a smoke monitoring system comprising a smoke alarm panel, a first smoke sensor connected to the smoke alarm panel via a first signal line, a second smoke sensor, and a monitoring device connected to the smoke alarm panel and the second smoke sensor via a second signal line, wherein the first smoke sensor detects smoke in the surrounding area and transmits the smoke detection result to the smoke alarm panel, the smoke alarm panel transmits the smoke detection result received from the first smoke sensor to the monitoring device, the second smoke sensor detects smoke in the surrounding area and transmits the smoke detection result to the monitoring device, and the monitoring device displays the smoke detection results received from the second smoke sensor and the smoke alarm panel on a display unit.

[0007] The first smoke sensor may determine whether the smoke detection result corresponds to at least one of a plurality of alarm levels depending on the smoke detection result, and transmit the determination result of the plurality of alarm levels to the smoke alarm panel, the smoke alarm panel may transmit the determination result received from the first smoke sensor to the monitoring device, the second smoke sensor may determine whether the smoke detection result corresponds to at least one of the plurality of alarm levels depending on the smoke detection result, and transmit the determination result of the plurality of alarm levels to the monitoring device, and the monitoring device may display the corresponding alarm level depending on the determination result received from the second smoke sensor and the smoke alarm panel.

[0008] The monitoring device may accept operations on the first smoke sensor and the second smoke sensor, transmit a signal corresponding to the operation on the first smoke sensor to the smoke alarm panel, transmit a signal corresponding to the operation on the second smoke sensor to the second smoke sensor, the smoke alarm panel transmits the signal received from the monitoring device to the first smoke sensor, the first smoke sensor performs processing corresponding to the signal received from the smoke alarm panel, and the second smoke sensor performs processing corresponding to the signal received from the monitoring device.

[0009] The monitoring device may have a first operation mode and a second operation mode, and in the second operation mode, operations on the first smoke sensor and the second smoke sensor may be more limited than in the first operation mode.

[0010] The smoke alarm panel and the first smoke sensor may communicate according to a first communication method, the smoke alarm panel and the monitoring device may communicate according to a second communication method different from the first communication method, and the second smoke sensor and the monitoring device may communicate according to the second communication method. [Effects of the Invention]

[0011] According to the present invention, the first smoke sensor that requires a smoke alarm panel and the second smoke sensor that does not require a smoke alarm panel can be monitored together using a monitoring device. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram illustrating an example of a smoke monitoring system 10 according to an embodiment. [Figure 2] FIG. 1 is a diagram showing an example of the configuration of a smoke alarm panel 100. [Figure 3] 1 is a diagram showing an example of the configuration of a slave smoke sensor 200. FIG. [Figure 4] FIG. 2 is a diagram showing an example of the configuration of a stand-alone smoke sensor 300. [Figure 5] FIG. 2 illustrates an example of the configuration of a monitoring device 400. [Figure 6] 10 is a sequence chart showing an example of an operation for collectively monitoring the slave smoke sensor 200 and the independent smoke sensor 300. [Figure 7] FIG. 6 is a diagram showing an example of a monitoring screen 600. [Figure 8] FIG. 6 is a diagram showing another example of the monitoring screen 600. [Figure 9] FIG. 10 is a diagram showing yet another example of the monitoring screen 600. [Figure 10] 10 is a sequence chart showing an example of an operation when the monitoring device 400 is used to operate the slave smoke sensor 200 and the independent smoke sensor 300. DETAILED DESCRIPTION OF THE INVENTION

[0013] composition FIG. 1 is a diagram showing an example of a smoke monitoring system 10 according to an embodiment. The smoke monitoring system 10 is installed in a fire prevention facility such as a server room, a data center, or a clean room. The smoke monitoring system 10 detects signs of a fire by monitoring the state of the ambient air in the fire prevention facility. Detecting signs of a fire in this way enables prompt action at an early stage.

[0014] The smoke monitoring system 10 comprises a plurality of smoke alarm panels 100, a plurality of slave smoke sensors 200, a plurality of stand-alone smoke sensors 300, and a monitoring device 400. Each smoke alarm panel 100 is connected to a plurality of slave smoke sensors 200 via a first signal line 500. The first signal line 500 is a computer network based on the RS-485 standard. Each smoke alarm panel 100 and the slave smoke sensors 200 connected to that smoke alarm panel 100 communicate in accordance with the RS-485 standard. The RS-485 standard is an example of a "first communication method" according to the present invention. Note that the communication method used for communication between the smoke alarm panel 100 and the slave smoke sensors 200 is not necessarily limited to the RS-485 standard, and may be another communication method, such as a serial communication standard other than RS-485.

[0015] The plurality of smoke alarm panels 100, the plurality of stand-alone smoke sensors 300, and the monitoring device 400 are connected via a second signal line 510. The second signal line 510 is a general-purpose computer network based on the IP (Internet Protocol). An example of the second signal line 510 is a LAN (Local Area Network). The monitoring device 400 and each smoke alarm panel 100, and the monitoring device 400 and each The communication with the stand-alone smoke sensor 300 is performed according to IP. IP is an example of the "second communication method" according to the present invention.

[0016] The smoke alarm panel 100 is a device that receives smoke detection results from the slave smoke sensor 200 and outputs an alarm in response to the smoke detection results.

[0017] The slave smoke sensor 200 is also called a communication type smoke sensor, and is a smoke sensor that is slaved to the smoke alarm panel 100. "Slave" here means that part of the smoke alarm function is performed by the smoke alarm panel 100. The slave smoke sensor 200 detects smoke in the surrounding area and transmits the smoke detection results to the smoke alarm panel 100. The slave smoke sensor 200 is an example of the "first smoke sensor" according to the present invention.

[0018] The independent smoke sensor 300, also known as a stand-alone type smoke sensor, is a smoke sensor that operates independently without the need for the smoke alarm panel 100. Here, "operating independently" means that the smoke alarm function can be realized without relying on any other device. The independent smoke sensor 300 detects smoke in the surrounding area and outputs an alarm in response to the smoke detection result. The independent smoke sensor 300 is an example of the "second smoke sensor" according to the present invention.

[0019] The monitoring device 400 collects smoke detection results from the slave smoke sensors 200 and the stand-alone smoke sensors 300 and displays these detection results so that they can be monitored collectively. The monitoring device 400 also accepts operations for the smoke alarm panel 100, the slave smoke sensors 200, and the stand-alone smoke sensors 300 to enable remote control of these devices. The monitoring device 400 is used by both maintenance personnel and general users.

[0020] 2 is a diagram showing an example of the configuration of the smoke alarm panel 100. The smoke alarm panel 100 comprises a control unit 101, a memory unit 102, a first communication unit 103, a second communication unit 104, an operation unit 105, a display unit 106, and a sound output unit 107. These units are connected via a bus.

[0021] The control unit 101 is a processor that controls each unit of the device and performs various processes. The control unit 101 includes, for example, a CPU (Central Processing Unit). The storage unit 102 is a memory that stores programs and various data for realizing the functions of the device. The storage unit 102 includes, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), and a RAM (Random Access Memory).

[0022] The first communication unit 103 is a communication interface for connecting the device itself to the first signal line 500. The first communication unit 103 is used to communicate with another device connected via the first signal line 500 in accordance with, for example, RS-485. The first communication unit 103 includes, for example, a network adapter compatible with RS-485.

[0023] The second communication unit 104 is a communication interface for connecting the device itself to the second signal line 510. The second communication unit 104 is used to communicate with other devices connected via the second signal line 510 in accordance with, for example, IP. The second communication unit 104 includes, for example, a network adapter compatible with a LAN.

[0024] The operation unit 105 is used to operate the device itself. The operation unit 105 includes, for example, operation buttons. The display unit 106 displays various types of information. The display unit 106 includes, for example, at least one of a 7-segment display, an LED (Light Emitting Diode), and a liquid crystal display. The sound output unit 107 outputs various types of sounds. The sound output unit 107 includes, for example, a speaker.

[0025] The control unit 101 functions as first receiving means 111, output means 112, first transmitting means 113, second receiving means 114, and second transmitting means 115. These functions are realized by the control unit 101 executing a program stored in the memory unit 102, and the control unit 101 performing calculations or controlling each part of the smoke alarm panel 100.

[0026] The first receiving means 111 receives the smoke detection result from the slave smoke sensor 200 .

[0027] The output means 112 outputs an alarm in response to the smoke detection result received by the first receiving means 111. The output of this alarm includes at least one of displaying an alarm on the display unit 106, outputting a signal transfer to an external device, and outputting an alarm sound from the sound output unit 107.

[0028] The first transmitting means 113 transmits the smoke detection result of the slave smoke sensor 200 received by the first receiving means 111 to the monitoring device 400 .

[0029] When an operation is performed on the monitoring device 400, which is connected to the slave smoke sensor 200 or on the monitoring device itself, the second receiving means 114 receives a signal from the monitoring device 400 in response to this operation.

[0030] When the second receiving means 114 receives a signal corresponding to an operation directed to the slave smoke sensor 200, the second transmitting means 115 transmits this signal to the slave smoke sensor 200 that is the target of the operation.

[0031] 3 is a diagram showing an example of the configuration of the slave smoke sensor 200. The slave smoke sensor 200 includes a control unit 201, a storage unit 202, a communication unit 203, and a smoke detection unit 204. These units are connected via a bus.

[0032] The control unit 201, the memory unit 202, and the communication unit 203 are respectively similar to the above-described control unit 101, the memory unit 102, and the first communication unit 103. However, the memory unit 202 stores a program for realizing the functions of the dependent smoke sensor 200.

[0033] The smoke detection unit 204 sucks in the surrounding air and measures the smoke density. In this way, the smoke detection unit 204 detects smoke present in the surrounding air. The smoke density that the smoke detection unit 204 can measure ranges from 0.0001% / m to 20.0% / m, for example. Smoke detection can be performed using, for example, a total scattered light method or a two-light receiving method. However, the method of detecting smoke is not limited to these methods, and other methods may also be used.

[0034] The control unit 201 functions as a determination unit 211, a transmission unit 212, and a reception unit 213. These functions are realized by the control unit 201 executing a program stored in the storage unit 202, and the control unit 201 performing calculations or controlling each unit of the dependent smoke sensor 200.

[0035] The determination means 211 determines whether or not the result of smoke detection by the smoke detection unit 204 corresponds to at least one of a plurality of alarm levels. As an example, the plurality of alarm levels are three levels: "Alarm 1," "Alarm 2," and "Alarm 3." "Alarm 1" is the lowest alarm level. "Alarm 2" is the second lowest alarm level. "Alarm 3" is the highest alarm level.

[0036] The transmitting means 212 transmits the smoke detection result by the smoke detection section 204 to the smoke alarm panel 100. The smoke detection result includes the determination result by the determining means 211.

[0037] When an operation is performed on the monitoring device 400 itself, the receiving means 213 receives a signal corresponding to this operation via the smoke alarm panel 100.

[0038] 4 is a diagram showing an example of the configuration of a stand-alone smoke sensor 300. The stand-alone smoke sensor 300 includes a control unit 301, a memory unit 302, a communication unit 303, a smoke detection unit 304, an operation unit 305, a display unit 306, and a sound output unit 307. These units are connected via a bus.

[0039] The control unit 301, the memory unit 302, the communication unit 303, the operation unit 305, the display unit 306, and the sound output unit 307 are respectively similar to the above-mentioned control unit 101, the memory unit 102, the second communication unit 104, the operation unit 105, the display unit 106, and the sound output unit 107. However, the memory unit 302 stores a program for realizing the functions of the stand-alone smoke sensor 300.

[0040] The smoke detection unit 304 sucks in the surrounding air and measures the smoke density. In this way, the smoke detection unit 304 detects smoke present in the surrounding air. The smoke density that the smoke detection unit 304 can measure ranges from 0.0001% / m to 20.0% / m, for example. Smoke detection can be performed using, for example, a total scattered light method or a two-light receiving method. However, the method of detecting smoke is not limited to these methods, and other methods may also be used.

[0041] The control unit 301 functions as a determination unit 311, an output unit 312, a transmission unit 313, and a reception unit 314. These functions are realized by the control unit 301 executing a program stored in the storage unit 302, and the control unit 301 performing calculations or controlling each unit of the stand-alone smoke sensor 300.

[0042] The determination means 311 determines whether or not the detection result of smoke by the smoke detection unit 304 corresponds to at least one of a plurality of alarm levels. As an example, the plurality of alarm levels are the above-mentioned three levels of alarm, namely, "Alarm 1," "Alarm 2," and "Alarm 3."

[0043] The output means 312 outputs an alarm according to the determination result of the determination means 311. This output of the alarm includes at least one of displaying an alarm on the display unit 306, outputting a signal to an external device, and outputting an alarm sound from the sound output unit 307.

[0044] The transmitting means 313 transmits the smoke detection result by the smoke detection unit 304 to the monitoring device 400. The smoke detection result includes the determination result by the determining means 311.

[0045] When an operation is performed on the monitoring device 400 itself, the receiving means 314 receives a signal from the monitoring device 400 in response to this operation.

[0046] 5 is a diagram showing an example of the configuration of a monitoring device 400. For example, a general-purpose computer is used as the monitoring device 400. The monitoring device 400 includes a control unit 401, a storage unit 402, a communication unit 403, an operation unit 404, and a display unit 405. These units are connected via a bus.

[0047] The control unit 401, storage unit 402, communication unit 403, operation unit 404, and display unit 405 are respectively similar to the above-described control unit 101, storage unit 102, second communication unit 104, operation unit 105, and display unit 106. However, the storage unit 402 stores a program for realizing the functions of the monitoring device 400. The operation unit 404 includes, for example, a keyboard and a mouse.

[0048] The control unit 401 functions as a receiving means 411, a display control means 412, and a transmitting means 413. These functions are realized by the control unit 401 executing a program stored in the storage unit 402, and the control unit 401 performing calculations or controlling each part of the monitoring device 400.

[0049] The receiving means 411 receives smoke detection results from the smoke alarm panel 100 and the stand-alone smoke sensor 300 .

[0050] The display control means 412 displays the smoke detection results received from the smoke alarm panel 100 and the stand-alone smoke sensor 300 on the display unit 405 .

[0051] When an operation is performed on the dependent smoke sensor 200 or the independent smoke sensor 300 using the operation unit 105, the transmission means 413 transmits a signal corresponding to this operation to the smoke alarm panel 100 to which the dependent smoke sensor 200 that is the target of the operation is connected, or to the independent smoke sensor 300 that is the target of the operation.

[0052] operation 6 is a sequence chart showing an example of an operation for collectively monitoring the slave smoke sensor 200 and the stand-alone smoke sensor 300. This operation is performed repeatedly at predetermined time intervals, for example.

[0053] In step S11, the smoke detection unit 204 of each slave smoke sensor 200 measures the smoke density of the surrounding air. In step S12, the determination means 211 of each slave smoke sensor 200 uses the smoke density measured in step S11 to determine whether or not the smoke density corresponds to an alarm level.

[0054] Each dependent smoke sensor 200 is preset with a first threshold, a second threshold, and a third threshold to determine one of three alarm levels: "Alarm 1," "Alarm 2," and "Alarm 3." The first threshold, the second threshold, and the third threshold are transmitted in advance from the smoke alarm panel 100 to each dependent smoke sensor 200 and stored in the memory unit 202 of each dependent smoke sensor 200. The first threshold, the second threshold, and the third threshold are set, for example, within a range of 0.01% / m to 20.0% / m. The first threshold is the smallest of the three thresholds. The second threshold is greater than the first threshold and less than the third threshold. The third threshold is the largest of the three thresholds.

[0055] The determination means 211 determines the alarm level by comparing the smoke density measured by the smoke detection unit 204 with a first threshold, a second threshold, and a third threshold. For example, if the smoke density is equal to or less than the first threshold, the determination means 211 determines that the smoke density does not correspond to any of the alarm levels "Alarm 1" to "Alarm 3." If the smoke density is greater than the first threshold and equal to or less than the second threshold, the determination means 211 determines that the smoke density corresponds to the alarm level "Alarm 1." If the smoke density is greater than the second threshold and equal to or less than the third threshold, the determination means 211 determines that the smoke density corresponds to the alarm level "Alarm 2." If the smoke density is greater than the third threshold, the determination means 211 determines that the smoke density corresponds to the alarm level "Alarm 3."

[0056] In step S13, the transmission means 212 of each slave smoke sensor 200 transmits its own detection result to the smoke alarm panel 100. This detection result includes an identifier that uniquely identifies the slave smoke sensor 200 and the smoke density measured in step S11. This smoke density is an analog value. Furthermore, if it is determined in step S12 that the detected smoke corresponds to one of the alarm levels "Alarm 1" to "Alarm 3," this detection result includes alarm information indicating the corresponding alarm level.

[0057] In step S14, when the first receiving means 111 of each smoke alarm panel 100 receives a smoke detection result from the slave smoke sensor 200 connected to the device itself, the first transmitting means 113 transmits this detection result to the monitoring device 400.

[0058] If the smoke detection result received from the slave smoke sensor 200 includes alarm information, the output means 112 of the smoke alarm panel 100 outputs an alarm according to the alarm level indicated by the alarm information. This alarm output includes at least one of displaying an alarm on the display unit 106, outputting a signal to an external device, and outputting an alarm sound from the sound output unit 107.

[0059] In step S15, the smoke detection unit 304 of each stand-alone smoke sensor 300 measures the smoke density of the surrounding air. In step S16, the determination means 311 of each stand-alone smoke sensor 300 determines whether or not the smoke density measured in step S15 corresponds to an alarm level, similar to the process of step S12 described above. In each stand-alone smoke sensor 300, a first threshold, a second threshold, and a third threshold are set in advance and stored in the memory unit 302. The determination means 311 compares the smoke density measured in step S15 with the first threshold, the second threshold, and the third threshold to determine whether or not the smoke density corresponds to an alarm level.

[0060] If it is determined that the alarm level corresponds to any one of "Alarm 1" to "Alarm 3," the output means 312 of the stand-alone smoke sensor 300 outputs an alarm. This alarm output includes at least one of displaying an alarm on the display unit 306, outputting a signal to an external device, and outputting an alarm sound from the sound output unit 307.

[0061] In step S17, the transmitting means 313 of each stand-alone smoke sensor 300 transmits the detection result of its own device to the monitoring device 400. This detection result includes an identifier that uniquely identifies the stand-alone smoke sensor 300 and the smoke concentration measured in step S15. Furthermore, if it is determined in step S16 that the detected smoke corresponds to one of the alarm levels "Alarm 1" to "Alarm 3," this detection result includes alarm information indicating the corresponding alarm level.

[0062] The processing of steps S11 to S14 and the processing of steps S15 to S17 may be performed in parallel, or the processing of steps S15 to S17 may be performed before or after the processing of steps S11 to S14.

[0063] In step S18, when the receiving means 411 of the monitoring device 400 receives a detection result from the smoke alarm panel 100 or the stand-alone smoke sensor 300, it stores this detection result in the memory unit 402. At this time, the identifier, smoke concentration, and alarm information contained in one detection result are stored in association with each other. As a result, the memory unit 402 stores detection results from a plurality of slave smoke sensors 200 and a plurality of stand-alone smoke sensors 300.

[0064] In step S19, the display control means 412 of the monitoring device 400 displays a monitoring screen 600 showing the detection results stored in the storage unit 402 on the display unit 405 in response to an operation by an operator. This operator may be a maintenance technician or a general user.

[0065] 7 is a diagram showing an example of a monitoring screen 600. The monitoring screen 600 has a selection area 610, a display area 620, an event area 640, and an operation area 650. The selection area 610 accepts an operation to select the smoke alarm panel 100 or the stand-alone smoke sensor 300. Here, it is assumed that the smoke alarm panel 100 includes a smoke alarm panel 100A and a smoke alarm panel 100B. In this case, the selection area 610 includes a selection button 611 used to select the smoke alarm panel 100A, a selection button 612 used to select the smoke alarm panel 100B, and a selection button 613 used to select the stand-alone smoke sensor 300.

[0066] The display area 620 displays the detection results of the slave smoke sensors 200 connected to the smoke alarm panel 100 selected in the selection area 610 or the stand-alone smoke sensors 300 selected in the selection area 610. The display area 620 displays as many sensor areas 621 as the number of slave smoke sensors 200 connected to the smoke alarm panel 100 selected in the selection area 610 or the stand-alone smoke sensors 300 selected in the selection area 610. Note that a maximum number of sensor areas 621 may be set for display in the display area 620. If the number of sensor areas 621 is greater than the maximum number, the sensor areas 621 may be arranged across multiple pages, and the sensor areas 621 arranged on the next page may be displayed in response to an operation to move to the next page.

[0067] Each sensor area 621 includes a smoke density area 622, a bar graph 623, and alarm symbols 624 to 626 labeled "Alarm 1" to "Alarm 3." The smoke density area 622 displays the smoke density measured by the dependent smoke sensor 200 or the independent smoke sensor 300. The bar graph 623 displays a bar indicating the smoke density. The alarm symbol 624 lights up when at least one of the alarm levels "Alarm 1" to "Alarm 3" is determined based on the smoke density measured by the dependent smoke sensor 200 or the independent smoke sensor 300. The alarm symbol 625 lights up when either the alarm level "Alarm 2" or "Alarm 3" is determined based on the smoke density measured by the dependent smoke sensor 200 or the independent smoke sensor 300. The alarm symbol 626 lights up when the alarm level "Alarm 3" is determined based on the smoke density measured by the dependent smoke sensor 200 or the independent smoke sensor 300. This lighting display refers to a display that is conspicuously displayed in a lighting color such as red.

[0068] Here, it is assumed that slave smoke sensors 200A to 200C are connected to the smoke alarm panel 100A. In this case, when the operation of pressing the selection button 611 is performed using the operation unit 404, sensor areas 621-1 to 621-3 corresponding to the slave smoke sensors 200A to 200C respectively connected to the smoke alarm panel 100A are displayed in the display area 620. Furthermore, the detection results associated with the identifiers of the slave smoke sensors 200A to 200C are read from the storage unit 402 and displayed in the sensor areas 621-1 to 621-3, respectively.

[0069] For example, if the smoke density measured by dependent smoke sensor 200A is 0.01% / m and is determined not to correspond to any of the alarm levels "Alarm 1" to "Alarm 3," then as shown in FIG. 7, a smoke density of 0.01% / m is displayed in smoke density area 622 of sensor area 621-1. A bar graph 623 of sensor area 621-1 displays a bar indicating the smoke density of 0.01% / m. All of alarm symbols 624 to 626 for "Alarm 1" to "Alarm 3" are displayed in an unlit state. This unlit display refers to an inconspicuous display in an unlit color such as gray.

[0070] Furthermore, if the smoke density measured by slave smoke sensor 200B is 0.04% / m and is determined to correspond to the alarm level "Alarm 1," then, as shown in FIG. 7, a smoke density of 0.04% / m is displayed in smoke density area 622 of sensor area 621-2. A bar indicating the smoke density of 0.04% / m is displayed in bar graph 623 of sensor area 621-2. An alarm symbol 624 labeled "Alarm 1" is displayed lit. An alarm symbol 625 labeled "Alarm 2" and an alarm symbol 626 labeled "Alarm 3" are displayed unlit.

[0071] Furthermore, if the smoke density measured by sensor area 621-3 is 0.15% / m and is determined to correspond to the alarm level "Alarm 3," then, as shown in Fig. 7, a smoke density of 0.15% / m is displayed in smoke density area 622 of sensor area 621-3. A bar indicating the smoke density of 0.15% / m is displayed in bar graph 623 of sensor area 621-3. Note that in the example shown in Fig. 7, the maximum value of bar graph 623 is 0.10% / m, and therefore any value exceeding the maximum value is not displayed in bar graph 623. All of alarm symbols 624 to 626, "Alarm 1" to "Alarm 3," are displayed lit.

[0072] The displays of sensor areas 621-1 to 621-3 are updated every time new detection results of slave smoke sensors 200A to 200C are stored in storage unit 402. Therefore, sensor areas 621-1 to 621-3 display the detection results of slave smoke sensors 200A to 200C in real time.

[0073] In the example shown in FIG. 7, alarms "Alarm 1" and "Alarm 3" have been issued in accordance with the smoke concentrations measured by the slave smoke sensors 200B and 200C, respectively. In this case, the detection results of the slave smoke sensors 200B and 200C are preferentially displayed on the monitoring screen 600. For example, even if the operator does not press the selection button 611 used to select the smoke alarm panel 100A, the detection result of the slave smoke sensor 200 connected to the smoke alarm panel 100A is displayed in the display area 620. Also, as shown in FIG. 7, an additional image 615 indicating the occurrence of an alarm is added to the selection button 611 used to select the smoke alarm panel 100A. Furthermore, as shown in FIG. 7, the event area 640 displays event information 643 including the identifier of the slave smoke sensor 200B and the alarm level "Alarm 1", and event information 641 including the identifier of the slave smoke sensor 200C and the alarm level "Alarm 3".

[0074] 8 is a diagram showing another example of the monitoring screen 600. Here, it is assumed that the stand-alone smoke sensor 300 includes stand-alone smoke sensors 300A and 300B. In this case, when the operation of pressing the selection button 613 is performed using the operation unit 404, sensor areas 621-4 and 621-5 corresponding to the stand-alone smoke sensors 300A and 300B, respectively, are displayed in the display area 620. In addition, the detection results associated with the identifiers of the stand-alone smoke sensors 300A and 300B are read from the storage unit 402 and displayed in the sensor areas 621-4 and 621-5, respectively.

[0075] For example, if the smoke density measured by stand-alone smoke sensor 300A is 0.01% / m and is determined not to correspond to any of the alarm levels "Alarm 1" to "Alarm 3," then as shown in Fig. 8, smoke density area 622 of sensor area 621-4 displays a smoke density of 0.01% / m. Bar graph 623 of sensor area 621-4 displays a bar indicating the smoke density of 0.01% / m. All of alarm symbols 624 to 626 for "Alarm 1" to "Alarm 3" are displayed unlit.

[0076] Furthermore, if the smoke density measured by stand-alone smoke sensor 300B is 0.08% / m and is determined to correspond to the alarm level "Alarm 2," then, as shown in FIG. 8, a smoke density of 0.08% / m is displayed in smoke density area 622 of sensor area 621-5. A bar indicating the smoke density of 0.08% / m is displayed in bar graph 623 of sensor area 621-5. Alarm symbol 624 "Alarm 1" and alarm symbol 625 "Alarm 2" are displayed lit. Alarm symbol 626 "Alarm 3" is displayed unlit.

[0077] The displays of the sensor areas 621-4 and 621-5 are updated every time new detection results of the stand-alone smoke sensors 300A and 300B are stored in the memory unit 402. Therefore, the detection results of the stand-alone smoke sensors 300A and 300B are displayed in real time in the sensor areas 621-4 and 621-5.

[0078] In the example shown in FIG. 8 , an alarm called "Alarm 2" is issued in response to the smoke concentration measured by the independent smoke sensor 300B. In this case, the detection result of the independent smoke sensor 300B is displayed preferentially on the monitoring screen 600. For example, even if the operator does not press the selection button 613 used to select the independent smoke sensor 300, the detection result of the independent smoke sensor 300 shown in FIG. 8 is displayed in the display area 620. However, if an alarm called "Alarm 3" is issued in response to the smoke concentration measured by the dependent smoke sensor 200C along with an alarm called "Alarm 2" in response to the smoke concentration measured by the independent smoke sensor 300B, the detection result of the dependent smoke sensor 200C may be displayed preferentially in the display area 620 rather than the detection result of the independent smoke sensor 300, because the alarm level of "Alarm 3" is higher. Also, as shown in FIG. 8 , an additional image 615 indicating the occurrence of an alarm is added to the selection button 613 used to select the independent smoke sensor 300. As further shown in FIG. 8, the event area 640 displays event information 642 including the identifier of the stand-alone smoke sensor 300B and the alarm level "Alarm 2."

[0079] Furthermore, in addition to the detection result of the dependent smoke sensor 200 or the independent smoke sensor 300, the sensor area 621 may also display the status of the dependent smoke sensor 200 or the independent smoke sensor 300. For example, if a signal indicating the status of the dependent smoke sensor 200 or the independent smoke sensor 300 is transmitted from the smoke alarm panel 100, the dependent smoke sensor 200, or the independent smoke sensor 300 to the monitoring device 400, the status of the dependent smoke sensor 200 or the independent smoke sensor 300 may be displayed in response to this signal. Alternatively, if the monitoring device 400 controls the status of the dependent smoke sensor 200 or the independent smoke sensor 300, the status of the dependent smoke sensor 200 or the independent smoke sensor 300 may be displayed in response to this control content.

[0080] The states of the dependent smoke sensor 200 or the standalone smoke sensor 300 include a normal state, an abnormal state, and an interrupted state. However, the states of the dependent smoke sensor 200 or the standalone smoke sensor 300 are not limited to the normal state, the abnormal state, and the interrupted state. The states of the dependent smoke sensor 200 or the standalone smoke sensor 300 may also include at least one of a state in which various tests are being performed, a state in which environmental monitoring is being performed, and a state in which airflow normalization is being performed.

[0081] 7 or 8, the sensor area 621 includes a normal symbol 627 indicating a normal state, an abnormal symbol 628 indicating an abnormal state, and a blocked symbol 629 indicating a blocked state. For example, if the slave smoke sensor 200 or the stand-alone smoke sensor 300 is normal, the normal symbol 627 included in the corresponding sensor area 621 is displayed lit, and the abnormal symbol 628 is displayed unlit. On the other hand, if there is an abnormality in the slave smoke sensor 200 or the stand-alone smoke sensor 300, the abnormal symbol 628 included in the corresponding sensor area 621 is displayed lit, and the normal symbol 627 is displayed unlit. If the signal transmission of the slave smoke sensor 200 or the stand-alone smoke sensor 300 is blocked, the blocked symbol 629 included in the corresponding sensor area 621 is displayed lit.

[0082] If there is an abnormality in the dependent smoke sensor 200 or the standalone smoke sensor 300, an additional image indicating the occurrence of the abnormality may be added to the selection button used to select the smoke alarm panel 100 or standalone smoke sensor 300 to which the dependent smoke sensor 200 is connected. Furthermore, the event area 640 may display event information including the identifier of the abnormal dependent smoke sensor 200 or standalone smoke sensor 300 and a message indicating the occurrence of the abnormality.

[0083] FIG. 9 is a diagram showing yet another example of the monitoring screen 600. In the example shown in FIG. 9, the detection results of the dependent smoke sensor 200 or the independent smoke sensor 300 are displayed on a map 630. The monitoring screen 600 shown in FIG. 7 or 8 and the monitoring screen 600 shown in FIG. 9 may be switched in response to an operation by the operator. For example, the monitoring screen 600 displays a tab item 661 called "Show Side-by-Side" and a tab item 662 called "Map Display." When an operation to select the tab item 661 called "Show Side-by-Side" is performed using the operation unit 404, the monitoring screen 600 shown in FIG. 7 or 8 is displayed. On the other hand, when an operation to select the tab item 662 called "Map Display" is performed using the operation unit 404, the monitoring screen 600 shown in FIG. 9 is displayed.

[0084] 9, a map 630 is displayed in the display area 620 showing the installation locations of the slave smoke sensors 200 connected to the smoke alarm panel 100 selected in the selection area 610 or the stand-alone smoke sensor 300 selected in the selection area 610. For example, when an operation to press the selection button 611 is performed using the operation unit 404, icons 631 to 633 indicating the slave smoke sensors 200A to 200C connected to the smoke alarm panel 100A are displayed on the map 630 included in the display area 620. In addition, detection results associated with the identifiers of the slave smoke sensors 200A to 200C are read from the storage unit 402 and displayed near the icons 631 to 633, respectively.

[0085] For example, if the smoke density measured by slave smoke sensor 200A is 0.01% / m and it is determined that the smoke density does not correspond to any of the alarm levels "Alarm 1" to "Alarm 3," then the smoke density of 0.01% / m is displayed near icon 631, as shown in Fig. 9. Icon 631 is colored white, indicating that no alarm has occurred.

[0086] Furthermore, if the smoke density measured by slave smoke sensor 200B is 0.04% / m and is determined to correspond to the alarm level "Alarm 1," the smoke density of 0.04% / m will be displayed near icon 632, as shown in Fig. 9. The color of icon 632 will be red, indicating that an alarm has been issued.

[0087] Furthermore, if the smoke density measured by slave smoke sensor 200C is 0.15% / m and is determined to correspond to the alarm level "Alarm 3," a smoke density of 0.15% / m is displayed near icon 633, as shown in Fig. 9. The color of icon 633 turns red, indicating that an alarm has been issued.

[0088] If there is an abnormality in the dependent smoke sensor 200 or the independent smoke sensor 300, the color of the icon indicating the abnormal dependent smoke sensor 200 or independent smoke sensor 300 may be changed to yellow. However, if there is an abnormality in the dependent smoke sensor 200 or the independent smoke sensor 300 and the detection result of the dependent smoke sensor 200 or the independent smoke sensor 300 is determined to correspond to at least one of the alarm levels "Alarm 1" to "Alarm 3," the color of the corresponding icon may be changed to red.

[0089] The display of map 630 is updated every time new detection results of the slave smoke sensors 200A-200C are stored in storage unit 402. Therefore, map 630 displays the detection results of the slave smoke sensors 200A-200C in real time.

[0090] In the example shown in FIG. 9, alarms "Alarm 1" and "Alarm 3" have been issued in accordance with the smoke concentrations measured by the slave smoke sensors 200B and 200C. In this case, the detection results of the slave smoke sensors 200B and 200C are preferentially displayed on the monitoring screen 600. For example, even if the operator does not press the selection button 611 used to select the smoke alarm panel 100A, a map 630 showing the installation locations of the slave smoke sensors 200 connected to the smoke alarm panel 100A is displayed in the display area 620. Also, as shown in FIG. 9, an additional image 615 indicating the occurrence of an alarm is added to the selection button 611 used to select the smoke alarm panel 100A. Furthermore, the event area 640 displays event information 643 including the identifier of the slave smoke sensor 200B and the alarm level "Alarm 1", and event information 641 including the identifier of the slave smoke sensor 200C and the alarm level "Alarm 3".

[0091] 10 is a sequence chart showing an example of the operation when operating the slave smoke sensor 200 and the stand-alone smoke sensor 300 using the monitoring device 400. The monitoring screen 600 shown in FIGS. 7 to 9 is displayed on the monitoring device 400. An operation area 650 of the monitoring screen 600 receives operations for the smoke alarm panel 100, the slave smoke sensor 200, and the stand-alone smoke sensor 300.

[0092] The monitoring device 400 has a setting mode that is mainly used by maintenance personnel, and a user mode that is mainly used by general users. These operating modes are switched, for example, in response to an operator's operation on the monitoring screen 600. In the setting mode, all operations are permitted. On the other hand, in the user mode, operations are more restricted than in the setting mode. For example, in the user mode, operations for inspection or maintenance and operations that could cause serious problems if operated incorrectly are prohibited. The setting mode is an example of a "first operating mode" according to the present invention. The user mode is an example of a "second operating mode" according to the present invention.

[0093] In the setting mode, as shown in Figures 7 to 9, an operation area 650 displays an operation image 651 titled "Control," an operation image 652 titled "Test," an operation image 653 titled "Shutdown," an operation image 654 titled "Database," an operation image 655 titled "Settings," an operation image 656 titled "Restore," and an operation image 657 titled "Sound Stop."

[0094] The operation image 651 labeled "Control" is used for operations related to displaying device information of the dependent smoke sensor 200 or the standalone smoke sensor 300, collecting and saving event logs, performing environmental monitoring, performing airflow normalization, disabling switch operations, resetting the filter replacement period, clearing the event log, collecting software version information, and displaying the time elapsed since the filter replacement. The operation image 652 labeled "Test" is used for operations related to performing a fire test, an abnormality test, and an opposing test of the dependent smoke sensor 200 or the standalone smoke sensor 300. The operation image 653 labeled "Shutdown" is used for operations related to shutting down the fire signal, the abnormality signal, and the signal transfer. The operation image 654 labeled "Database" is used for operations related to changing the database of the smoke alarm panel 100, the dependent smoke sensor 200, or the standalone smoke sensor 300. The operation image 655 labeled "Settings" is used for operations related to changing the threshold used to determine the alarm level. The operation image 656 labeled "Restore" is used for operations related to restoring the smoke alarm panel 100, the dependent smoke sensor 200, or the standalone smoke sensor 300. The operation image 657 labeled "Stop sound" is used for operations related to stopping the warning sound of the smoke alarm panel 100, the dependent smoke sensor 200, or the standalone smoke sensor 300.

[0095] On the other hand, in the user mode, an operation image 653 called "Shutdown", an operation image 655 called "Settings", an operation image 656 called "Restore", and an operation image 657 called "Sound Stop" are displayed in the operation area 650, while an operation image 651 called "Control", an operation image 652 called "Test", an operation image 654 called "Database", etc. can be hidden. Therefore, in the user mode, for example, operations can be performed using operation images 653 and 655 to 657, but operations cannot be performed using operation images 651, 652, and 654.

[0096] 10, in step S31, the operation unit 404 of the monitoring device 400 accepts an operation by the operator on at least one of the smoke alarm panel 100, the slave smoke sensor 200, and the stand-alone smoke sensor 300. In step S32, the transmission means 413 of the monitoring device 400 determines whether the operation accepted in step S31 is directed to the stand-alone smoke sensor 300.

[0097] If the operation is directed to the stand-alone smoke sensor 300 (determination in step S32 is YES), in step S33 the transmitting means 413 of the monitoring device 400 transmits a signal instructing the execution of processing corresponding to the operation accepted in step S31 to the stand-alone smoke sensor 300 that is the target of the operation. In step S34, when the receiving means 314 of the stand-alone smoke sensor 300 receives this signal from the monitoring device 400, the stand-alone smoke sensor 300 executes processing corresponding to this signal.

[0098] On the other hand, if the operation is directed at the dependent smoke sensor 200 (the judgment in step S32 is NO), in step S35 the transmission means 413 of the monitoring device 400 transmits a signal instructing the execution of processing according to the operation received in step S31 and the identifier of the dependent smoke sensor 200 that is the target of the operation to the smoke alarm panel 100 to which this dependent smoke sensor 200 is connected.

[0099] In step S36, when the second receiving means 114 of the smoke alarm panel 100 receives this signal and identifier from the monitoring device 400, the second transmitting means 115 transmits this signal to the slave smoke sensor 200 to be operated. The slave smoke sensor 200 to be operated is identified by the identifier received together with the signal. In step S37, when the receiving means 213 of the slave smoke sensor 200 receives this signal from the smoke alarm panel 100, the slave smoke sensor 200 executes processing according to this signal.

[0100] The processing performed in step S34 or S37 includes at least one of the following processing: displaying device information, collecting and saving event logs, performing environmental monitoring, performing airflow normalization, disabling switch operations, resetting the filter replacement period, clearing event logs, collecting software version information, displaying the time elapsed since the filter was replaced, performing a fire test, performing an abnormality test, performing an opposing test, blocking the fire signal, blocking the abnormality signal, blocking the signal transfer, changing the database, changing the threshold used to determine the alarm level, recovery, and stopping the warning sound.

[0101] For example, when a maintenance worker uses operation unit 404 to select operation image 652 labeled "Test" shown in Figures 7 to 9 to instruct the start of a fire test of stand-alone smoke sensor 300A, a test start signal for the fire test is transmitted from monitoring device 400 to stand-alone smoke sensor 300A. Upon receiving this test start signal, stand-alone smoke sensor 300A starts the fire test.

[0102] On the other hand, when a maintenance person uses the operation unit 404 to select the operation image 652 labeled "Test" shown in Figures 7 to 9 to instruct the start of a fire test of the slave smoke sensor 200A, a test start signal for the fire test and an identifier for the slave smoke sensor 200A are transmitted from the monitoring device 400 to the smoke alarm panel 100A. The smoke alarm panel 100A transmits this test start signal to the slave smoke sensor 200A. Upon receiving this test start signal, the slave smoke sensor 200A begins the fire test.

[0103] According to the embodiment described above, the monitoring screen 600 displayed on the monitoring device 400 includes the smoke detection results by the slave smoke sensor 200 and the smoke detection results by the standalone smoke sensor 300, so that the smoke detection results by the slave smoke sensor 200, which requires the smoke alarm panel 100, and the smoke detection results by the standalone smoke sensor 300, which does not require the smoke alarm panel 100, can be monitored all at once using the monitoring device 400. Furthermore, when an alarm is issued in response to the smoke detection results by the slave smoke sensor 200 or the standalone smoke sensor 300, the alarm symbols 624 to 626 corresponding to the alarm level are lit, so that the occurrence of an alarm and the alarm level can be easily recognized.

[0104] Furthermore, the monitoring screen 600 displayed on the monitoring device 400 accepts operations for the dependent smoke sensor 200, which requires the smoke alarm panel 100, and the independent smoke sensor 300, which does not require the smoke alarm panel 100, so that both the dependent smoke sensor 200 and the independent smoke sensor 300 can be operated using the monitoring device 400. Here, since the monitoring device 400 is used not only by maintenance personnel but also by general users, there is a concern that general users may mistakenly perform operations that could cause serious problems. However, because the monitoring device 400 has a setting mode and a user mode, for example, by restricting operations that could cause serious problems in the user mode, general users can be prevented from mistakenly performing such operations.

[0105] Furthermore, the smoke alarm panel 100 receives smoke detection results from the slave smoke sensor 200 in accordance with a communication method supported by the slave smoke sensor 200, and transmits these smoke detection results to the monitoring device 400 in accordance with a communication method supported by the monitoring device 400. The stand-alone smoke sensor 300 also transmits smoke detection results to the monitoring device 400 in accordance with a communication method supported by the monitoring device 400. This allows the monitoring device 400 to obtain both the detection results of the slave smoke sensor 200 and the smoke detection results of the stand-alone smoke sensor 300, even if the communication method supported by the slave smoke sensor 200 and the communication method supported by the stand-alone smoke sensor 300 are different. As a result, the smoke detection results by the slave smoke sensor 200 and the smoke detection results by the stand-alone smoke sensor 300 can be monitored together using the monitoring device 400.

[0106] Furthermore, since the multiple smoke alarm panels 100, the multiple stand-alone smoke sensors 300, and the monitoring device 400 are connected via a general-purpose computer network such as a LAN, for example, if a user already has a general-purpose computer network, the smoke monitoring system 10 can be constructed using this general-purpose computer network.

[0107] Variations The present invention is not limited to the above-described embodiment. The above-described embodiment may be modified as in the following modified examples. The embodiment and the modified examples may be used in combination, or may be switched depending on the implementation. Similarly, the following modified examples may be used in combination, or may be switched depending on the implementation.

[0108] In the above-described embodiment, the display unit 106 of the smoke alarm panel 100 may also display the detection results of the slave smoke sensors 200 connected to that smoke alarm panel 100. The display unit 106 may display the information contained in the sensor area 621 shown in Figure 7 for each slave smoke sensor 200 connected to the smoke alarm panel 100, or may only display a portion of the information contained in the sensor area 621. Similarly, the display unit 306 of the stand-alone smoke sensor 300 may also display the detection results of that stand-alone smoke sensor 300. The display unit 306 may display the information contained in the sensor area 621 shown in Figure 7 for the stand-alone smoke sensor 300, or may only display a portion of the information contained in the sensor area 621.

[0109] 9 is displayed on map 630. If both the dependent smoke sensor 200 and the independent smoke sensor 300 are installed in the same installation location, both the dependent smoke sensor 200 and the independent smoke sensor 300 may be displayed on map 630. In this case, selection buttons used to select the installation location are displayed in selection area 610. Here, it is assumed that the dependent smoke sensors 200A-200C and the independent smoke sensor 300A are installed on the first floor. In this case, when the operator uses operation unit 404 to select the installation location of the first floor, icons 631-633 representing the dependent smoke sensors 200A-200C, respectively, and an icon representing the independent smoke sensor 300A are displayed on map 630.

[0110] In the above-described embodiments, the dependent smoke sensor 200 and the standalone smoke sensor 300 do not necessarily need to measure smoke density. For example, the dependent smoke sensor 200 and the standalone smoke sensor 300 may detect smoke when the density of smoke in the surrounding air reaches or exceeds a predetermined density, and transmit a smoke detection signal indicating that smoke has been detected.

[0111] In the above-described embodiment, the configuration of the smoke monitoring system 10 is not limited to the above-described example. The smoke monitoring system 10 may be configured to include one or more of the above-described devices, or may be configured to include none of the devices. Furthermore, the entity that performs the functions of the smoke monitoring system 10 is not limited to the above-described example. For example, the smoke alarm panel 100 may have a determination means 211 instead of the slave smoke sensor 200.

[0112] In the above-described embodiment, the operation of the smoke monitoring system 10 is not limited to the above-described example. The order of the processing steps of the smoke monitoring system 10 may be changed as long as there is no contradiction. Furthermore, some processing steps of the smoke monitoring system 10 may be omitted.

[0113] Another aspect of the present invention may provide a method having processing steps performed in at least one of the smoke monitoring system 10, the smoke alarm panel 100, the dependent smoke sensor 200, the standalone smoke sensor 300, and the monitoring device 400. Furthermore, yet another aspect of the present invention may provide a program executed in the smoke alarm panel 100, the dependent smoke sensor 200, the standalone smoke sensor 300, or the monitoring device 400. This program may be provided by being stored in a computer-readable recording medium, or by being downloaded via the Internet or the like.

[0114] In the above-described embodiment, the configuration of the monitoring screen 600 is not limited to the above-described example. The monitoring screen 600 may have any configuration as long as it displays the smoke detection results of the slave smoke sensor 200 and the stand-alone smoke sensor 300 and accepts operations for the smoke alarm panel 100, the slave smoke sensor 200, and the stand-alone smoke sensor 300. This configuration includes color, arrangement, shape, components, and screen transitions. For example, the colors of the icons on the monitoring screen 600 shown in FIG. 9 described in the above-described embodiment are merely examples and are not limited to these. The color of the icon indicating that no alarm has occurred may be a color other than white. Furthermore, the color of the icon indicating that an alarm has occurred may be a color other than red as long as it is different from the color indicating that no alarm has occurred. Furthermore, the color of the icon indicating that an abnormality has occurred in the slave smoke sensor 200 or the stand-alone smoke sensor 300 may be a color other than yellow as long as it is different from the color indicating that no alarm has occurred and the color indicating that an alarm has occurred. Furthermore, the number and arrangement of operation images on the monitoring screen 600 shown in FIGS. 7 to 9 are merely examples and are not limited to these. The monitoring screen 600 may be configured to include operation images different from the operation images 651 to 657, or may be configured to not include some of the operation images.

[0115] In the above-described embodiment, the monitoring device 400 may be used as a setting tool. In this case, the monitoring device 400 is individually connected to the device whose setting is to be changed, among the smoke alarm panel 100, the slave smoke sensor 200, and the stand-alone smoke sensor 300, via a third signal line different from the first signal line 500 and the second signal line 510. The third signal line is, for example, a computer network based on the USB (Universal Serial Bus) standard. When connected via the third signal line, the monitoring device 400 and the device whose setting is to be changed communicate with each other according to, for example, the USB standard. The monitoring device 400 also has a setting tool mode. Like the setting mode, the setting tool mode is an operating mode mainly used by maintenance personnel. In the setting tool mode, for example, all operations are permitted. When the monitoring device 400 transitions to the setting tool mode, it changes the settings of the device whose setting is to be changed in response to operations by a maintenance personnel. [Explanation of symbols]

[0116] 10: Smoke monitoring system, 100: Smoke alarm panel, 111: First receiving means, 112: Output means, 113: First transmitting means, 114: Second receiving means, 115: Second transmitting means, 200: Dependent smoke sensor, 211: Determination means, 212: Transmission means, 213: Receiving means, 300: Independent smoke sensor, 311: Determination means, 312: Output means, 313: Transmission means, 314: Receiving means, 400: Monitoring device, 411: Receiving means, 412: Display control means, 413: Transmission means

Claims

1. A smoke monitoring system comprising a smoke alarm panel, a first smoke sensor connected to the smoke alarm panel via a first signal line, a second smoke sensor, and a monitoring device connected to the smoke alarm panel and the second smoke sensor via a second signal line, The first smoke sensor detects surrounding smoke, determines whether or not the smoke corresponds to at least one of a plurality of alarm levels according to the smoke detection result, and transmits the determination result of the plurality of alarm levels to the smoke alarm panel; The smoke alarm panel transmits the determination result received from the first smoke sensor to the monitoring device, the second smoke sensor detects surrounding smoke, determines whether or not the smoke detection result corresponds to at least one of the plurality of alarm levels, and transmits the determination result of the plurality of alarm levels to the monitoring device; The monitoring device displays a corresponding alarm level according to the determination results received from the second smoke sensor and the smoke alarm panel. Smoke monitoring system.

2. The smoke alarm panel has an output means for outputting a signal to an external device, the first smoke sensor does not have the output means, The second smoke sensor has the output means.

10. The smoke monitoring system of claim 1.

Images