Smoke sensors and smoke monitoring systems

Abstract

To conduct a fire test of a smoke sensor individually as to a plurality of alarm levels.SOLUTION: A subordinate smoke sensor 300 or a standalone smoke sensor 400 comprises: an acquisition unit that acquires an implementation instruction of a fire test at each of a plurality of alarm levels indicative of the smoke density being equal to or more than respective different thresholds; a test unit that implements the fire test at each of the plurality of alarm levels; and an output unit that outputs a result of the fire test.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to smoke sensors and smoke monitoring systems. [Background technology]

[0002] There is technology for testing smoke detectors (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-352348 A Summary of the Invention [Problem to be solved by the invention]

[0004] Some smoke sensors output an alarm corresponding to a corresponding alarm level among a plurality of alarm levels according to the concentration of smoke measured by the smoke sensor. For such smoke sensors, there is a demand for conducting fire tests of the smoke sensor separately for each of the plurality of alarm levels in order to confirm whether the sensor normally issues an alarm for each of the plurality of alarm levels.

[0005] It is an object of the present invention to provide separate fire testing of smoke sensors for multiple alarm levels. [Means for solving the problem]

[0006] One aspect of the present invention provides a smoke sensor comprising an acquisition unit that acquires instructions to perform a fire test at each of a plurality of alarm levels indicating that the concentration of smoke is equal to or greater than a different threshold value, a test unit that performs the fire test at each of the plurality of alarm levels in accordance with the execution instructions, and an output unit that outputs results of the fire test. Effect of the Invention

[0007] The present invention allows for separate fire testing of smoke sensors for multiple alarm levels. [Brief description of the drawings]

[0008] [Figure 1] 1 is a diagram showing an example of the configuration of a smoke monitoring system according to an embodiment; [Diagram 2] FIG. 2 is a diagram showing an example of the configuration of a smoke alarm panel. [Diagram 3] FIG. 2 illustrates an example of a configuration of a monitoring device. [Figure 4] FIG. 2 is a diagram showing an example of the configuration of a dependent smoke sensor. [Diagram 5] FIG. 2 is a diagram showing an example of the configuration of a stand-alone smoke sensor. [Figure 6] 10 is a sequence chart showing an example of an operation when an instruction to execute a fire test of a slave smoke sensor is given from a smoke alarm panel. [Figure 7] FIG. 2 is a diagram showing an example of a panel surface of a smoke alarm panel. [Figure 8] FIG. 13 shows an example display of fire test results at different alarm levels. [Figure 9] FIG. 13 is a diagram showing an example display of the results of a fire test at yet another alarm level. [Figure 10] 10 is a sequence chart showing an example of an operation when a monitoring device issues an instruction to execute a fire test on a slave smoke sensor or an independent smoke sensor. [Figure 11] 10 is a sequence chart showing an example of an operation when a monitoring device issues an instruction to execute a fire test on a slave smoke sensor or an independent smoke sensor. [Figure 12] FIG. 4 is a diagram showing an example of a monitoring screen displayed on the monitoring device. [Figure 13] FIG. 13 is a diagram illustrating an example of a confirmation screen displayed on the monitoring device. [Figure 14] FIG. 13 is a diagram illustrating an example of a notification screen displayed on the monitoring device. [Figure 15] FIG. 13 shows an example display of fire test results at different alarm levels. [Figure 16]FIG. 13 is a diagram showing an example display of the results of a fire test at yet another alarm level. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] composition FIG. 1 is a diagram showing an example of the configuration of a smoke monitoring system 10 according to an embodiment. The smoke monitoring system 10 is installed in a fire-prevention object such as a server room, a data center, or a clean room. The smoke monitoring system 10 detects signs of fire by monitoring the state of the ambient air in the fire-prevention object. In this way, detecting signs of fire makes it possible to quickly respond at an early stage.

[0010] The smoke monitoring system 10 comprises a plurality of smoke alarm panels 100, a monitoring device 200, a plurality of dependent smoke sensors 300, and a plurality of independent smoke sensors 400. The plurality of dependent smoke sensors 300 are connected to each smoke alarm panel 100 via a first signal line 500. The plurality of smoke alarm panels 100, the monitoring device 200, and the plurality of independent smoke sensors 400 are connected via a second signal line 510 such as a LAN (Local Area Network).

[0011] In the smoke monitoring system 10, a fire test is performed on the dependent smoke sensor 300 and the independent smoke sensor 400 at predetermined times, such as during installation or maintenance. This fire test is a test to check whether the dependent smoke sensor 300 or the independent smoke sensor 400 operates normally.

[0012] The smoke alarm panel 100 is a device that receives smoke detection results from the slave smoke sensor 300 and outputs an alarm in response to the smoke detection results. The smoke alarm panel 100 also has a function of instructing the slave smoke sensor 300 to carry out a fire test.

[0013] The monitoring device 200 is used to collectively monitor the dependent smoke sensor 300 and the independent smoke sensor 400. The monitoring device 200 also has a function of instructing the independent smoke sensor 400 and the dependent smoke sensor 300 to execute a fire test.

[0014] The dependent smoke sensor 300 is also called a communication type smoke sensor, and is a smoke sensor that is dependent on the smoke alarm panel 100. The term "dependent" here means that part of the smoke alarm function is performed by the smoke alarm panel 100. The dependent smoke sensor 300 detects surrounding smoke and transmits the smoke detection result to the smoke alarm panel 100. The dependent smoke sensor 300 also performs a fire test according to instructions from the smoke alarm panel 100 or the monitoring device 200.

[0015] The independent smoke sensor 400 is also called a stand-alone type smoke sensor, and is a smoke sensor that operates independently without the need for the smoke alarm panel 100. Here, "operates independently" means that the smoke alarm function can be realized without relying on other devices. The independent smoke sensor 400 detects smoke in the surrounding area and outputs an alarm according to the smoke detection result. The dependent smoke sensor 300 also performs a fire test according to the instruction of the monitoring device 200.

[0016] 2 is a diagram showing an example of the configuration of the smoke alarm panel 100. The smoke alarm panel 100 includes a control unit 101, a storage unit 102, a first communication unit 103, a second communication unit 104, an operation unit 105, and a display unit 106. The various units of the smoke alarm panel 100 are connected via a bus.

[0017] The control unit 101 is a processor that controls each part 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 implementing 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).

[0018] 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, for example, to communicate with another device connected via the first signal line 500. 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, for example, to communicate with another device connected via the second signal line 510.

[0019] The operation unit 105 is used to operate the device itself. This operation includes an operation to instruct the execution of a fire test. The operation unit 105 includes, for example, an operation button. The display unit 106 displays various information. The display unit 106 includes, for example, a 7-segment display and an LED (Light Emitting Diode).

[0020] The control unit 101 functions as a transmission unit 111, a reception unit 112, a display control unit 113, and a transfer unit 114. These functions are realized by the control unit 101 executing a program stored in the storage unit 102, and the control unit 101 performing calculations or controlling each part of the smoke alarm panel 100.

[0021] The transmission unit 111 transmits instructions to the slave smoke sensor 300 to perform a fire test at each of a plurality of alarm levels in response to an operation using the operation unit 105. The plurality of alarm levels indicate that the concentration of smoke is equal to or greater than a different threshold value. In one example, the plurality of alarm levels are three alarm levels, "Alarm 1" to "Alarm 3". "Alarm 1" is the lowest alarm level. "Alarm 2" is the second lowest alarm level. "Alarm 3" is the highest alarm level.

[0022] The receiver 112 receives the results of the fire test performed by the slave smoke sensor 300 in accordance with the execution instruction transmitted from the transmitter 111 .

[0023] The display control unit 113 displays the results of the fire test received by the receiving unit 112 on the display unit 106 .

[0024] The transfer unit 114 transfers the data sent from the monitoring device 200 to the slave smoke sensor 300. In addition, the transfer unit 114 transfers the data sent from the slave smoke sensor 300 to the monitoring device 200.

[0025] 3 is a diagram showing an example of the configuration of the monitoring device 200. For example, a general-purpose computer is used as the monitoring device 200. The monitoring device 200 includes a control unit 201, a storage unit 202, a communication unit 203, an operation unit 204, and a display unit 205. The various units of the monitoring device 200 are connected via a bus.

[0026] The control unit 201, memory unit 202, communication unit 203, operation unit 204, and display unit 205 are similar to the control unit 101, memory unit 102, second communication unit 104, operation unit 105, and display unit 106 of the smoke alarm panel 100, respectively. However, the memory unit 202 stores a program for realizing the functions of the monitoring device 200. The operation unit 204 includes, for example, a keyboard and a mouse. The display unit 205 includes, for example, a liquid crystal display.

[0027] The control unit 201 functions as a transmission unit 211, a reception unit 212, and a display control 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 monitoring device 200.

[0028] The transmission unit 211 transmits, in response to an operation using the operation unit 204, an instruction to execute a fire test at each of a plurality of alarm levels to the slave smoke sensor 300 or the independent smoke sensor 400.

[0029] The receiving unit 212 receives the results of the fire test performed by the slave smoke sensor 300 or the independent smoke sensor 400 in accordance with the execution instruction transmitted from the transmitting unit 211.

[0030] The display control unit 213 displays the results of the fire test received by the receiving unit 212 on the display unit 205 .

[0031] 4 is a diagram showing an example of the configuration of the dependent smoke sensor 300. The dependent smoke sensor 300 includes a control unit 301, a storage unit 302, a communication unit 303, and a smoke detection unit 304. The respective units of the dependent smoke sensor 300 are connected via a bus.

[0032] The control unit 301, the storage unit 302, and the communication unit 303 are respectively similar to the control unit 101, the storage unit 102, and the first communication unit 103 of the smoke alarm panel 100. However, the storage unit 302 stores a program for realizing the functions of the dependent smoke sensor 300.

[0033] 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. For example, a total scattered light method or a two-light receiving method is used to detect smoke. However, the method of detecting smoke is not limited to these methods, and other methods may be used.

[0034] The control unit 301 functions as an acquisition unit 311, a test unit 312, a determination unit 313, and an output 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 dependent smoke sensor 300.

[0035] The acquisition unit 311 acquires from the smoke alarm panel 100 or the monitoring device 200 an instruction to perform a fire test at each of a plurality of alarm levels.

[0036] The test unit 312 executes a fire test at each of a plurality of alarm levels according to the execution instruction acquired by the acquisition unit 311. In the dependent smoke sensor 300, different thresholds are set in advance for each of a plurality of alarm levels. For example, the thresholds of the alarm levels "alarm 1" to "alarm 3" are set in the range of 0.01% / m to 20.0% / m so that the thresholds of the alarm levels "alarm 1" are larger than the threshold of the alarm level "alarm 2" and the threshold of the alarm level "alarm 3". The thresholds set in this manner are stored in the storage unit 302. The test unit 312 executes a fire test at a target alarm level by artificially increasing the smoke concentration to the threshold of the target alarm level.

[0037] The determination unit 313 determines the corresponding alarm level by comparing the smoke concentration stored in the storage unit 302 with the thresholds of the alarm levels "Alarm 1" to "Alarm 3". For example, when the smoke concentration is less than the threshold of the alarm level "Alarm 1", the determination unit 313 determines that the smoke concentration does not correspond to any of the alarm levels "Alarm 1" to "Alarm 3". When the smoke concentration is equal to or greater than the threshold of the alarm level "Alarm 1", the determination unit 313 determines that the smoke concentration corresponds to the alarm level "Alarm 1". When the smoke concentration is equal to or greater than the threshold of the alarm level "Alarm 2", the determination unit 313 determines that the smoke concentration corresponds to the alarm level "Alarm 2". When the smoke concentration is equal to or greater than the threshold of the alarm level "Alarm 3", the determination unit 313 determines that the smoke concentration corresponds to the alarm level "Alarm 3".

[0038] The output unit 314 outputs the result of the fire test performed by the test unit 312 to the smoke alarm panel 100 or the monitoring device 200. The result of the fire test indicates the smoke concentration stored in the memory unit 302 and the corresponding alarm level determined by the determination unit 313.

[0039] 5 is a diagram showing an example of the configuration of the stand-alone smoke sensor 400. The stand-alone smoke sensor 400 includes a control unit 401, a storage unit 402, a communication unit 403, a smoke detection unit 404, an operation unit 405, and a display unit 406. The individual units of the stand-alone smoke sensor 400 are connected via a bus.

[0040] The control unit 401, memory unit 402, communication unit 403, operation unit 405, and display unit 406 are respectively similar to the control unit 101, memory unit 102, second communication unit 104, operation unit 105, and display unit 106 of the smoke alarm panel 100. However, the memory unit 402 stores a program for realizing the functions of the stand-alone smoke sensor 400.

[0041] The smoke detection unit 404, like the smoke detection unit 304 of the dependent smoke sensor 300, sucks in the surrounding air and measures the concentration of smoke. The smoke concentration measured by the smoke detection unit 404 is stored in the memory unit 402.

[0042] The control unit 401 functions as an acquisition unit 411, a test unit 412, a determination unit 413, and an output unit 414. 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 unit of the stand-alone smoke sensor 400.

[0043] The acquisition unit 411 acquires from the monitoring device 200 an instruction to execute a fire test at each of a plurality of alarm levels.

[0044] Similar to the testing unit 312 of the dependent smoke sensor 300, the testing unit 412 executes fire tests at each of the multiple alarm levels in accordance with the execution instructions acquired by the acquiring unit 411. Similar to the dependent smoke sensor 300, the independent smoke sensor 400 also has different thresholds preset for each of the multiple alarm levels and stored in the memory unit 402.

[0045] Similar to the determination unit 313 of the dependent smoke sensor 300, the determination unit 413 determines the appropriate alarm level by comparing the smoke concentration stored in the memory unit 402 with the alarm level thresholds "Alarm 1" to "Alarm 3."

[0046] The output unit 414 outputs the result of the fire test performed by the test unit 412 to the monitoring device 200. The result of the fire test indicates the smoke concentration stored in the memory unit 402 and the corresponding alarm level determined by the determination unit 413.

[0047] operation FIG. 6 is a sequence chart showing an example of the operation when the smoke alarm panel 100 issues an instruction to execute a fire test on the slave smoke sensor 300. In FIG.

[0048] In step S11, the worker uses the operation unit 105 of the smoke alarm panel 100 to select the slave smoke sensor 300 to be subjected to a fire test, and performs an operation to instruct the execution of a fire test at any one of a plurality of alarm levels.

[0049] 7 is a diagram showing an example of the panel 150 of the smoke alarm panel 100. The panel 150 has an operation area 150a and a display area 150b. The operation area 150a accepts an operation to select the slave smoke sensor 300 to be subjected to a fire test and to instruct the execution of a fire test at any one of a plurality of alarm levels. In this example, the operation area 150a includes a "Test" button 151.

[0050] The "Test" button 151 accepts an operation to specify the target alarm level for the fire test from among "Alarm 1" to "Alarm 3" (hereinafter referred to as the "target alarm level") and to instruct the execution of the fire test. The target alarm level is specified, for example, by changing the number of times the "Test" button 151 is pressed.

[0051] For example, to instruct the execution of a fire test at an alarm level of "Alarm 1," the "Test" button 151 is pressed once. To instruct the execution of a fire test at an alarm level of "Alarm 2," the "Test" button 151 is pressed twice. To instruct the execution of a fire test at an alarm level of "Alarm 3," the "Test" button 151 is pressed three times.

[0052] The operation area 150a further includes an indicator light 153 of a "Test" button 151 and an indicator light 154 saying "Caution Switch". These indicator lights 153 and 154 are realized by, for example, LEDs. When the "Test" button 151 is pressed, the indicator light 153 of the "Test" button 151 lights up and the indicator light 154 saying "Caution Switch" flashes. The flashing of the indicator light 154 indicates that a fire test is in progress.

[0053] In step S12, the transmitting unit 111 of the smoke alarm panel 100 transmits a test start command to the dependent smoke sensor 300 to be subjected to the fire test in response to the operation performed in step S11, instructing the dependent smoke sensor 300 to start a fire test at the target alarm level. The test start command includes the target alarm level. The acquiring unit 311 of the dependent smoke sensor 300 receives the test start command from the smoke alarm panel 100.

[0054] In step S13, when the slave smoke sensor 300 receives the test start command, the slave smoke sensor 300 transitions to a fire test mode. In the fire test mode, the normal alarm operation is not performed.

[0055] In step S14, the test unit 312 of the slave smoke sensor 300 executes a fire test at the target alarm level in accordance with the test start command. Specifically, the test unit 312 rewrites the smoke concentration stored in the memory unit 302 to the threshold of the target alarm level. This artificially increases the smoke concentration to the threshold of the target alarm level.

[0056] The determination unit 313 compares the smoke concentration stored in the storage unit 302 with each threshold of the alarm levels "alarm 1" to "alarm 3" to determine whether or not the smoke concentration corresponds to at least one of the alarm levels "alarm 1" to "alarm 3". Here, since the smoke concentration stored in the storage unit 302 has been rewritten to the threshold of the target alarm level, the smoke concentration becomes equal to or greater than the threshold of the target alarm level. When the smoke concentration stored in the storage unit 302 becomes equal to or greater than the threshold of the target alarm level, the determination unit 313 performs an accumulation operation for a predetermined accumulation time stored in the storage unit 302. Here, the accumulation time is assumed to be 20 seconds. In this case, the determination unit 313 performs an accumulation operation for 20 seconds from the time when the smoke concentration stored in the storage unit 302 first becomes equal to or greater than the threshold of the target alarm level. Since the smoke concentration stored in the storage unit 302 is maintained as the threshold of the target alarm level, the determination unit 313 determines that the smoke concentration corresponds to the target alarm level after the accumulation time has elapsed. In addition, if there is a warning level lower than the target warning level, when the target warning level is met, the warning level lower than the target warning level is also met.

[0057] In step S15, when the fire test performed in step S14 is completed, the output unit 314 of the dependent smoke sensor 300 transmits an identifier that uniquely identifies the dependent smoke sensor 300 and the result of the fire test to the smoke alarm panel 100. The result of the fire test includes the smoke concentration and alarm information stored in the memory unit 302. The smoke concentration is an analog value. The alarm information indicates the corresponding alarm level. For example, the alarm information may be a one-bit value indicating the corresponding alarm level. The receiver unit 112 of the smoke alarm panel 100 receives the result of the fire test from the dependent smoke sensor 300.

[0058] In step S16, the receiving unit 112 of the smoke alarm panel 100 stores the received identifier and the result of the fire test in the memory unit 102 in association with each other.

[0059] In step S17, the display control unit 113 of the smoke alarm panel 100 reads out the fire test results from the memory unit 102 and displays them on the display unit 106. The fire test results are displayed for each slave smoke sensor 300 based on the associated identifier.

[0060] In step S18, the transmission unit 111 of the smoke alarm panel 100 judges whether or not to change the alarm level and perform the next fire test. For example, if an operator uses the "Test" button 151 to perform an operation to instruct the execution of a fire test at another alarm level, the transmission unit 211 judges that the alarm level will be changed and the next fire test will be performed (the judgment in step S18 is YES). In this case, the process returns to the above-mentioned step S12, and the processing from step S12 onward is performed with the changed alarm level as the target alarm level.

[0061] On the other hand, for example, if an operator performs an operation on the panel surface 150 of the smoke alarm panel 100 to instruct the end of the fire test, the transmission unit 211 determines that the next fire test will not be performed (NO in step S18). In this case, the process proceeds to step S19.

[0062] In step S19, the transmitting unit 111 of the smoke alarm panel 100 transmits a test end command to instruct the target slave smoke sensor 300 to end the fire test. The acquiring unit 311 of the slave smoke sensor 300 receives the test end command from the smoke alarm panel 100.

[0063] In step S20, when the dependent smoke sensor 300 receives the test end command, it returns from the fire test mode to the normal alarm mode. This restarts the normal alarm operation. In the normal alarm mode, the smoke detection unit 304 measures the smoke concentration at a predetermined time interval, and the smoke concentration is stored in the memory unit 302. Then, it is determined whether the smoke concentration stored in the memory unit 302 corresponds to at least one of the alarm levels "alarm 1" to "alarm 3". Then, the smoke detection result including the smoke concentration stored in the memory unit 302 and alarm information indicating the corresponding alarm level is transmitted to the smoke alarm panel 100. If the smoke detection result received from the dependent smoke sensor 300 includes alarm information, an alarm corresponding to the alarm level indicated by the alarm information is output from the smoke alarm panel 100.

[0064] Next, a specific operation example will be described. Here, the multiple dependent smoke sensors 300 include the dependent smoke sensor 300A. For example, when a fire test is first performed on the dependent smoke sensor 300A at an alarm level of "alarm 1", an operator selects the dependent smoke sensor 300A on the panel surface 150 of the smoke alarm panel 100 and presses the "test" button 151 once. In response to this operation, a test start command including the alarm level of "alarm 1" is transmitted from the smoke alarm panel 100 to the dependent smoke sensor 300A.

[0065] When the dependent smoke sensor 300A receives the test start command, it transitions to a fire test mode and executes a fire test at an alarm level of "alarm 1". Here, it is assumed that the threshold of the alarm level of "alarm 1" is 0.04% / m. In this case, the smoke concentration stored in the memory unit 302 of the dependent smoke sensor 300A is rewritten to 0.04% / m. Then, after a predetermined accumulation operation is performed, it is determined that the alarm level of "alarm 1" is met. Then, the result of the fire test, including the smoke concentration of 0.04% / m and alarm information indicating the alarm level of "alarm 1", is transmitted from the dependent smoke sensor 300A to the smoke alarm panel 100. The smoke alarm panel 100 stores the result of this fire test in the memory unit 102 and displays it on the display unit 106.

[0066] 7, the display area 150b is provided with sensor areas 156 equal to the number of slave smoke sensors 300 connected to the smoke alarm panel 100. Each sensor area 156 includes a smoke concentration area 157, a bar graph 158, and alarm lights 161-163 labeled "ALARM 1"-"ALARM 3." The alarm lights 161-163 are realized by, for example, LEDs.

[0067] The smoke density area 157 displays the smoke density measured by the slave smoke sensor 300. The bar graph 158 displays a bar indicating the smoke density. The warning lights 161-163 labeled "Alarm 1"-"Alarm 3" are turned on when it is determined that the smoke corresponds to "Alarm 1"-"Alarm 3", respectively.

[0068] The result of the fire test of the dependent smoke sensor 300A is displayed in the sensor area 156-1 corresponding to the dependent smoke sensor 300A. As described above, if the result of the fire test of the dependent smoke sensor 300A includes a smoke density of 0.04% / m and alarm information indicating an alarm level of "alarm 1", the smoke density of 0.04% / m is displayed in the smoke density area 157 of the sensor area 156-1. A bar indicating the smoke density of 0.04% / m is displayed in the bar graph 158 of the sensor area 156-1. The alarm light 161 of "alarm 1" is turned on. The alarm light 162 of "alarm 2" and the alarm light 163 of "alarm 3" are turned off. This display allows the operator to confirm that the alarm operation of the alarm level of "alarm 1" was performed normally in the fire test.

[0069] Next, to perform a fire test at the alarm level "Alarm 2", the worker presses the "Test" button 151 twice. In response to this operation, a test start command including the alarm level "Alarm 2" is transmitted from the smoke alarm panel 100 to the slave smoke sensor 300A.

[0070] When the dependent smoke sensor 300A receives the test start command, it continues the fire test mode and executes a fire test for the alarm level "alarm 2". Here, it is assumed that the threshold value of the alarm level "alarm 2" is 0.06% / m. In this case, the smoke concentration stored in the memory unit 302 of the dependent smoke sensor 300A is rewritten to 0.06% / m. Then, after a predetermined accumulation operation is performed, it is determined that the alarm levels "alarm 1" and "alarm 2" are met. Then, the result of the fire test including the smoke concentration of 0.06% / m and alarm information indicating the alarm levels "alarm 1" and "alarm 2" is transmitted from the dependent smoke sensor 300A to the smoke alarm panel 100. The smoke alarm panel 100 stores the result of this fire test in the memory unit 102 and displays it on the display unit 106.

[0071] FIG. 8 is a diagram showing an example of a display of the result of a fire test at an alarm level of "alarm 2". As described above, when the result of a fire test of the dependent smoke sensor 300A includes a smoke density of 0.06% / m and alarm information indicating alarm levels of "alarm 1" and "alarm 2", the smoke density of 0.06% / m is displayed in the smoke density area 157 of the sensor area 156-1. A bar indicating the smoke density of 0.06% / m is displayed in the bar graph 158 of the sensor area 156-1. The alarm light 161 of "alarm 1" and the alarm light 162 of "alarm 2" are turned on. The alarm light 163 of "alarm 3" is turned off. This display allows the operator to confirm that the alarm operation of the alarm level of "alarm 2" was performed normally in the fire test.

[0072] Next, to perform a fire test at an alarm level of "Alarm 3", the worker presses the "Test" button 151 three times. In response to this operation, a test start command including the alarm level of "Alarm 3" is transmitted from the smoke alarm panel 100 to the slave smoke sensor 300A.

[0073] When the dependent smoke sensor 300A receives the test start command, it continues the fire test mode and executes a fire test for the alarm level "alarm 3". Here, it is assumed that the threshold value of the alarm level "alarm 3" is 0.08% / m. In this case, the smoke concentration stored in the memory unit 302 is rewritten to 0.08% / m. Then, after a predetermined accumulation operation is performed, it is determined that the alarm level corresponds to "alarm 1" to "alarm 3". Then, the result of the fire test including the smoke concentration of 0.08% / m and the alarm information indicating the alarm levels "alarm 1" to "alarm 3" is transmitted from the dependent smoke sensor 300A to the smoke alarm panel 100. The smoke alarm panel 100 stores the result of this fire test in the memory unit 102 and displays it on the display unit 106.

[0074] FIG. 9 is a diagram showing an example of the display of the result of the fire test at the alarm level "Alarm 3". As described above, when the result of the fire test of the dependent smoke sensor 300A includes a smoke density of 0.08% / m and alarm information indicating the alarm levels "Alarm 1" to "Alarm 3", the smoke density of 0.08% / m is displayed in the smoke density area 157 of the sensor area 156-1. A bar indicating the smoke density of 0.08% / m is displayed in the bar graph 158 of the sensor area 156-1. The alarm lights 161 to 163 of "Alarm 1" to "Alarm 3" are turned on. This display allows the operator to confirm that the alarm operation of the alarm level "Alarm 3" was performed normally in the fire test.

[0075] In the above-mentioned operation example, the fire tests at the alarm levels "Alarm 1" to "Alarm 3" are carried out at different times. Also, each time a fire test at each alarm level of "Alarm 1" to "Alarm 3" is completed, the result of the fire test at this alarm level is transmitted and displayed on the smoke alarm panel 100.

[0076] After the result of the fire test at the alarm level "Alarm 3" is displayed, if a maintenance person performs an operation on the panel surface 150 of the smoke alarm panel 100 to instruct the end of the fire test, in response to this operation, a test end command is sent from the smoke alarm panel 100 to the slave smoke sensor 300A, and the slave smoke sensor 300A returns to alarm mode.

[0077] 10 and 11 are sequence charts showing an example of the operation when the monitoring device 200 issues an instruction to execute a fire test on the slave smoke sensor 300 or the independent smoke sensor 400. FIG.

[0078] In step S31, an operator uses the operation unit 204 of the monitoring device 200 to select the slave smoke sensor 300 or the independent smoke sensor 400 to be subjected to a fire test, and performs an operation to instruct execution of a fire test.

[0079] FIG. 12 is a diagram showing an example of a monitoring screen 250 displayed on the display unit 205 of the monitoring device 200. The monitoring screen 250 is displayed on the display unit 205 in response to, for example, an operation by an operator. As shown in FIG. 12, the monitoring screen 250 has an operation area 250a, a selection area 250b, and a display area 250c. The operation area 250a includes a "Test" button 251. The "Test" button 251 accepts an operation to specify a target alarm level from among "Alarm 1" to "Alarm 3" and to instruct the execution of a fire test. This operation is realized by the operation unit 204. For example, when a fire test with an alarm level of "Alarm 1" is to be executed, the operator uses the "Test" button 251 to perform an operation to instruct the execution of a fire test with the alarm level of "Alarm 1".

[0080] Fig. 13 is a diagram showing an example of a confirmation screen 265 displayed on the display unit 205 of the monitoring device 200. When an operation to instruct execution of a fire test is performed, the confirmation screen 265 shown in Fig. 13 is displayed on the display unit 205. The confirmation screen 265 includes a message for confirming whether it is OK to start a fire test and a "Yes" button 266. When starting a fire test, the operator presses the "Yes" button 266.

[0081] In step S32, the transmission unit 211 of the monitoring device 200 determines whether the target of the fire test selected in the operation performed in step S31 is the dependent smoke sensor 300 or the independent smoke sensor 400. For example, if the independent smoke sensor 400 is selected, the target of the fire test is the independent smoke sensor 400 (the determination in step S32 is "independent smoke sensor"), so the process proceeds to step S33.

[0082] In step S33, the transmitting unit 211 of the monitoring device 200 transmits a test start command to the stand-alone smoke sensor 400 to be subjected to the fire test in response to the operation performed in step S31, instructing the stand-alone smoke sensor 400 to start a fire test at the target alarm level. The test start command includes the target alarm level. The acquiring unit 411 of the stand-alone smoke sensor 400 receives the test start command from the monitoring device 200.

[0083] In step S34, when the stand-alone smoke sensor 400 receives the test start command, it transitions to a fire test mode. In the fire test mode, the normal alarm operation is not performed.

[0084] In step S35, the test unit 412 of the stand-alone smoke sensor 400 performs a fire test at the target alarm level in accordance with the test initiation command, similar to step S14 described above.

[0085] In step S36, similar to step S15 described above, when the fire test executed in step S35 is completed, the output unit 414 of the stand-alone smoke sensor 400 transmits the identifier of the stand-alone smoke sensor 400 and the result of the fire test to the monitoring device 200. The receiving unit 212 of the monitoring device 200 receives the identifier and the result of the fire test from the stand-alone smoke sensor 400.

[0086] In step S37, the receiving unit 212 of the monitoring device 200 associates the identifier received from the stand-alone smoke sensor 400 with the result of the fire test and stores them in the memory unit 202.

[0087] In step S38, the display control unit 213 of the monitoring device 200 reads the fire test results from the storage unit 202 and displays them on the display unit 205. The fire test results are displayed for each stand-alone smoke sensor 400 based on the associated identifier.

[0088] In step S39, the transmission unit 211 of the monitoring device 200 judges whether or not to change the alarm level and perform the next fire test. For example, when an operation to change the alarm level and instruct execution of the next fire test is performed by an operator, the transmission unit 211 judges that the alarm level will be changed and the next fire test will be performed (YES in step S39). In this case, the process returns to the above-mentioned step S33, and the process from step S33 onward is performed with the changed alarm level as the target alarm level.

[0089] On the other hand, if the operator performs an operation to instruct the end of the fire test, the transmission unit 211 determines that the next fire test will not be performed (NO in step S39). In this case, the process proceeds to step S40.

[0090] In step S40, the transmission unit 211 of the monitoring device 200 transmits a test end command instructing the target stand-alone smoke sensor 400 to end the fire test. The acquisition unit 411 of the stand-alone smoke sensor 400 receives the test end command from the monitoring device 200.

[0091] In step S41, when the stand-alone smoke sensor 400 receives the test end command, it returns from the fire test mode to the normal alarm mode, thereby resuming the normal alarm operation.

[0092] Next, a specific operation example will be described. Here, the independent smoke sensor 400 includes the independent smoke sensor 400A. For example, when a fire test is first performed on the independent smoke sensor 400A at an alarm level of "alarm 1", an operator selects the independent smoke sensor 400A using the "test" button 251 on the monitoring screen 250 shown in Fig. 12, performs an operation to instruct the execution of a fire test at an alarm level of "alarm 1", and then presses the "yes" button 266 on the confirmation screen 265 shown in Fig. 13. In response to this operation, a test start command including an alarm level of "alarm 1" is transmitted from the monitoring device 200 to the independent smoke sensor 400A.

[0093] When the independent smoke sensor 400A receives this test start command, it transitions to a fire test mode and executes a fire test at an alarm level of "alarm 1". Here, it is assumed that the threshold of the alarm level of "alarm 1" is 0.04% / m. In this case, the smoke concentration stored in the memory unit 402 is rewritten to 0.04% / m. Then, after a predetermined accumulation operation is performed, the alarm level of "alarm 1" is determined. Then, the result of the fire test including the smoke concentration of 0.04% / m and alarm information indicating the alarm level of "alarm 1" is transmitted from the independent smoke sensor 400A to the monitoring device 200. The monitoring device 200 stores the result of the fire test in the memory unit 202 and displays it on the display unit 205.

[0094] 12 includes selection buttons 252 to 254. Here, it is assumed that the smoke alarm panel 100 includes smoke alarm panels 100A and 100B. The selection button 252 accepts an operation to select the smoke alarm panel 100A. The selection button 253 accepts an operation to select the smoke alarm panel 100B. The selection button 254 accepts an operation to select the stand-alone smoke sensor 400.

[0095] In the display area 250c, sensor areas 255 are displayed in the same number as the number of the slave smoke sensors 300 or the independent smoke sensors 400 to be displayed. Each sensor area 255 includes a status display area 256, a smoke density area 257, a bar graph 258, and alarm symbols 261-263 labeled "Alarm 1"-"Alarm 3."

[0096] Status display area 256 displays the status of either the slave smoke sensor 300 or the standalone smoke sensor 400. While a fire test is in progress, status display area 256 displays the status "Fire Test."

[0097] The smoke density area 257 displays the smoke density measured by the dependent smoke sensor 300 or the independent smoke sensor 400. The bar graph 258 displays a bar indicating this smoke density.

[0098] The alarm symbols 261 to 263, labeled "Alarm 1" to "Alarm 3", are lit when they correspond to the alarm levels "Alarm 1" to "Alarm 3", respectively. This lighting refers to a conspicuous display in a lighting color such as red.

[0099] The result of the fire test of the independent smoke sensor 400A is displayed in the sensor area 255-1 corresponding to the independent smoke sensor 400A. As described above, when the result of the fire test of the independent smoke sensor 400A includes a smoke density of 0.04% / m and alarm information indicating an alarm level of "alarm 1", the smoke density of 0.04% / m is displayed in the smoke density area 257 of the sensor area 255-1. A bar indicating the smoke density of 0.04% / m is displayed in the bar graph 258 of the sensor area 255-1. The alarm symbol 261 of "alarm 1" is displayed in a lit state. The alarm symbol 262 of "alarm 2" and the alarm symbol 263 of "alarm 3" are displayed in an unlit state. This unlit display refers to displaying them in an unlit color such as gray so as not to stand out. This display allows the worker to confirm that the alarm operation of the alarm level of "alarm 1" was performed normally in the fire test.

[0100] FIG. 14 is a diagram showing an example of a notification screen 270 displayed on the display unit 205 of the monitoring device 200 while a fire test is being performed. While a fire test is being performed at an alarm level of "alarm 1", a notification screen 270A shown in FIG. 14(a) is displayed. The notification screen 270A includes an alarm level of "alarm 1" and a message indicating that a fire test is being performed. The notification screen 270A also accepts an operation to instruct the start of a fire test at "alarm 2", which is the next highest alarm level after "alarm 1". In this example, the notification screen 270A includes a message inquiring whether to change to an alarm level of "alarm 2" and a "Yes" button 271.

[0101] Next, to start a fire test at an alarm level of "ALARM 2", the operator presses the "YES" button 271. In response to this operation, a test start command including an alarm level of "ALARM 2" is transmitted from the monitoring device 200 to the stand-alone smoke sensor 400A.

[0102] When the independent smoke sensor 400A receives the test start command, it continues the fire test mode and executes a fire test at the alarm level of "alarm 2". Here, it is assumed that the threshold of the alarm level of "alarm 2" is 0.06% / m. In this case, the smoke density stored in the memory unit 302 is rewritten to 0.06% / m. Then, after a predetermined accumulation operation is performed, it is determined that the alarm levels of "alarm 1" and "alarm 2" are met. Then, the result of the fire test including the smoke density of 0.06% / m and alarm information indicating the alarm levels of "alarm 1" and "alarm 2" is transmitted from the independent smoke sensor 400A to the monitoring device 200. The monitoring device 200 stores the result of the fire test in the memory unit 202 and displays it on the display unit 205.

[0103] FIG. 15 is a diagram showing an example of a display of the result of a fire test at an alarm level of "alarm 2". As described above, when the result of a fire test of the independent smoke sensor 400A includes a smoke density of 0.06% / m and alarm information indicating alarm levels of "alarm 1" and "alarm 2", the smoke density of 0.06% / m is displayed in the smoke density area 257 of the sensor area 255-1. A bar indicating the smoke density of 0.06% / m is displayed in the bar graph 258 of the sensor area 255-1. The alarm symbol 261 of "alarm 1" and the alarm symbol 262 of "alarm 2" are displayed in a lit state. The alarm symbol 263 of "alarm 3" is displayed in an unlit state. This display allows an operator to confirm that the alarm operation of the alarm level of "alarm 2" was performed normally in the fire test.

[0104] While a fire test is being performed at the alarm level "ALARM 2", the display unit 205 of the monitoring device 200 displays a notification screen 270B shown in FIG. 14(b). The notification screen 270B includes the alarm level "ALARM 2" and a message indicating that a fire test is being performed. The notification screen 270B also accepts an operation to instruct the start of a fire test at "ALARM 3", which is the next highest alarm level after "ALARM 2". In this example, the notification screen 270B includes a message inquiring whether to change the alarm level to "ALARM 3" and a "YES" button 272.

[0105] Next, when a fire test is to be performed at an alarm level of "alarm 3", the worker presses the "Yes" button 272. In response to this operation, a test start command including an alarm level of "alarm 3" is transmitted from the monitoring device 200 to the independent smoke sensor 400A. When the independent smoke sensor 400A receives the test start command, it continues the fire test mode and performs a fire test at an alarm level of "alarm 3". Here, it is assumed that the threshold value of the alarm level of "alarm 3" is 0.08% / m. In this case, the smoke concentration stored in the memory unit 202 is rewritten to 0.08% / m. Then, after a predetermined accumulation operation is performed, it is determined that the alarm level corresponds to "alarm 1" to "alarm 3". Then, the result of the fire test including the smoke concentration of 0.08% / m and alarm information indicating the alarm levels of "alarm 1" to "alarm 3" is transmitted from the independent smoke sensor 400A to the monitoring device 200. The monitoring device 200 stores the results of this fire test in the memory unit 202 and displays them on the display unit 205.

[0106] FIG. 16 is a diagram showing an example of a display of the result of a fire test at an alarm level of "alarm 3". As described above, when the result of a fire test of the independent smoke sensor 400A includes a smoke density of 0.08% / m and alarm information indicating alarm levels of "alarm 1" to "alarm 3", the smoke density of 0.08% / m is displayed in the smoke density area 257 of the sensor area 255-1. A bar indicating the smoke density of 0.08% / m is displayed in the bar graph 258 of the sensor area 255-1. The alarm symbols 261 to 263 of "alarm 1" to "alarm 3" are lit. This display allows an operator to confirm that the alarm operation of the alarm level of "alarm 3" is normally performed in the fire test.

[0107] In the above-mentioned operation example, the fire tests at the alarm levels "ALARM 1" to "ALARM 3" are carried out at different times. Furthermore, each time a fire test at each alarm level of "ALARM 1" to "ALARM 3" is completed, the result of the fire test at this alarm level is transmitted and displayed on the monitoring device 200.

[0108] While the fire test is being performed at the alarm level "ALARM 3", the display unit 205 of the monitoring device 200 displays a notification screen 270C shown in FIG. 14(c). The notification screen 270C includes the alarm level "ALARM 3" and a message indicating that the fire test is being performed. The notification screen 270C also accepts an operation to instruct the end of the fire test. In this example, the notification screen 270C includes an "END TEST" button 273. When the fire test is to be ended, the worker presses the "END TEST" button 273. In response to this operation, a test end command is transmitted from the monitoring device 200 to the stand-alone smoke sensor 400A, and the stand-alone smoke sensor 400A returns to the alarm mode.

[0109] Returning to Fig. 10, a description will be given of the operation when the subject of the fire test is the dependent smoke sensor 300. When the dependent smoke sensor 300 is selected as the subject of the fire test, the subject of the fire test is the dependent smoke sensor 300 (the determination in step S32 is "dependent smoke sensor"), so the process proceeds to step S51 shown in Fig. 11.

[0110] In step S51, the transmitting unit 211 of the monitoring device 200 transmits, in response to the operation performed in step S31, to the smoke alarm panel 100 to which the slave smoke sensor 300 to be tested for fire is connected, an identifier of the slave smoke sensor 300 to be tested for fire and a test start command to instruct the start of a fire test at the target alarm level. The transferring unit 114 of the smoke alarm panel 100 receives the identifier and the test start command from the smoke alarm panel 100.

[0111] In step S52, the transfer unit 114 of the smoke alarm panel 100 transmits the received test start command to the dependent smoke sensor 300 that is to be subjected to the fire test. The destination of the test start command is identified by using the identifier received together with the test start command. The dependent smoke sensor 300 receives the test start command from the smoke alarm panel 100. The processes of steps S53 and S54 are similar to the processes of steps S13 and S14 shown in FIG. 6.

[0112] In step S55, when the fire test performed in step S54 is completed, the output unit 314 of the slave smoke sensor 300 transmits the identifier of the slave smoke sensor 300 and the result of the fire test to the smoke alarm panel 100 to which the slave smoke sensor 300 is connected. The transfer unit 114 of the smoke alarm panel 100 receives the identifier and the result of the fire test from the slave smoke sensor 300.

[0113] In step S56, the transfer unit 114 of the smoke alarm panel 100 transmits the received identifier and the result of the fire test to the monitoring device 200. The receiving unit 212 of the monitoring device 200 receives the identifier and the result of the fire test from the smoke alarm panel 100. When the smoke alarm panel 100 receives the result of the fire test from the slave smoke sensor 300, the result of the fire test may be displayed on the panel surface 150 of the smoke alarm panel 100, as shown in Figures 7 to 9.

[0114] The processing of steps S57 to S59 is similar to the processing of steps S37 to S39 shown in Fig. 10. For example, if a dependent smoke sensor 300 to be the subject of a fire test is connected to the smoke alarm panel 100A, when an operator presses the selection button 252 in the selection area 250b on the monitoring screen 250 shown in Fig. 12, sensor areas 255 equal to the number of dependent smoke sensors 300 connected to the smoke alarm panel 100A are displayed in the display area 250c. Of these sensor areas 255, the results of the fire test are displayed in the sensor area 255 corresponding to the dependent smoke sensor 300 to be the subject of the fire test.

[0115] In step S60, the transmission unit 211 of the monitoring device 200 transmits an identifier of the slave smoke sensor 300 to be tested for fire and a test end command to instruct the end of the fire test to the smoke alarm panel 100 to which the slave smoke sensor 300 to be tested for fire is connected. The transfer unit 114 of the smoke alarm panel 100 receives the identifier and the test end command from the smoke alarm panel 100.

[0116] In step S61, the transfer unit 114 of the smoke alarm panel 100 transmits the received test end command to the slave smoke sensor 300 that is to be subjected to the fire test. As in step S52 described above, the destination of this test end command is identified by using the identifier received together with the test end command. The slave smoke sensor 300 receives the test end command from the smoke alarm panel 100. The process of step S62 is similar to the process of step S20 shown in FIG. 6.

[0117] According to the above-described embodiment, the fire test of the dependent smoke sensor 300 or the independent smoke sensor 400 can be performed separately for the alarm levels "alarm 1" to "alarm 3". In addition, not only can the smoke alarm panel 100 issue an instruction to execute a fire test of the dependent smoke sensor 300, but the monitoring device 200 can also issue an instruction to execute a fire test of the dependent smoke sensor 300 and the independent smoke sensor 400 separately for the alarm levels "alarm 1" to "alarm 3". Furthermore, the fire tests at the alarm levels "alarm 1" to "alarm 3" are executed at different times, and each time a fire test at each alarm level is completed, the result of the fire test is transmitted and displayed on the smoke alarm panel 100 or the monitoring device 200, so that the results of the fire tests at each of the multiple alarm levels "alarm 1" to "alarm 3" can be individually confirmed.

[0118] 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.

[0119] In the above-described embodiment, the fire test may be performed on the stand-alone smoke sensor 400 without using the monitoring device 200. In this case, an operator uses the operation unit 405 of the stand-alone smoke sensor 400 to specify the target alarm level and perform an operation to instruct the execution of a fire test. The acquisition unit 411 acquires an instruction to execute a fire test at the target alarm level in response to this operation. The test unit 412 executes a fire test at the target alarm level in accordance with the execution instruction acquired by the acquisition unit 411. The output unit 414 outputs the result of the fire test executed by the test unit 412 to the display unit 406 or an external device connected via the second signal line 510.

[0120] In the above-described embodiment, the operation of instructing the execution of the fire test does not necessarily have to be performed for each alarm level. For example, an operation of instructing the execution of fire tests at alarm levels "alarm 1" to "alarm 3" in sequence may be performed only once. In response to this operation, a test start command is transmitted from the smoke alarm panel 100 or the monitoring device 200 to the dependent smoke sensor 300 or the independent smoke sensor 400 to instruct the execution of fire tests at alarm levels "alarm 1" to "alarm 3" in sequence. The dependent smoke sensor 300 or the independent smoke sensor 400 executes fire tests at alarm levels "alarm 1" to "alarm 3" in sequence according to this test start command. Specifically, first, a fire test at an alarm level "alarm 1" is started. When the fire test at the alarm level "alarm 1" is completed, a fire test at an alarm level "alarm 2" is started. When the fire test at the alarm level "alarm 2" is completed, a fire test at an alarm level "alarm 3" is started. The results of the fire test at each alarm level are transmitted each time a fire test at each alarm level is completed. According to this modification, fire tests at a plurality of alarm levels can be performed consecutively without an operator having to perform an operation to instruct the execution of a fire test for each alarm level.

[0121] In the above-described embodiment, the dependent smoke sensor 300 and the independent smoke sensor 400 may be subjected to not only a fire test but also other tests such as an abnormality test.

[0122] In the above-described embodiment, a command to execute a fire test may be issued simultaneously to the multiple dependent smoke sensors 300 or the multiple independent smoke sensors 400. In this modified example, an operator selects multiple dependent smoke sensors 300 or multiple independent smoke sensors 400 as targets for a fire test, and performs an operation to instruct execution of a fire test at each of multiple alarm levels, "alarm 1" to "alarm 3". In response to this operation, a test start command for a fire test is transmitted to the multiple dependent smoke sensors 300 or multiple independent smoke sensors 400 that are targets for the fire test, and the multiple dependent smoke sensors 300 or multiple independent smoke sensors 400 perform a fire test in parallel. In particular, when a command to execute a fire test is issued simultaneously to the multiple dependent smoke sensors 300 connected to the smoke alarm panel 100 in units of the smoke alarm panel 100 from the monitoring device 200, the fire tests of these dependent smoke sensors 300 can be performed collectively, which is convenient. In this modified example, the fire test may be performed in parallel only for the multiple dependent smoke sensors 300 or the multiple independent smoke sensors 400 connected to the same line. The same line refers to, for example, the first signal line 500 or the second signal line 510 connected to the same smoke alarm panel 100. The first signal line 500 connected to one smoke alarm panel 100 and the first signal line 500 connected to another smoke alarm panel 100 are different lines and are not the same line. In this case, when the fire test of the dependent smoke sensor 300 or independent smoke sensor 400 connected to a certain line is being performed, the fire test of the dependent smoke sensor 300 or independent smoke sensor 400 connected to the other line may be forcibly terminated.

[0123] In the above-described embodiment, if the smoke density is equal to or greater than the threshold for the alarm level "Alarm 2", it may not necessarily correspond to the alarm level "Alarm 1". For example, if the smoke density is equal to or greater than the threshold for the alarm level "Alarm 2", it may be determined that only the alarm level "Alarm 2" applies. Similarly, if the smoke density is equal to or greater than the threshold for the alarm level "Alarm 3", it may not necessarily correspond to the alarm levels "Alarm 1" and "Alarm 2". If the smoke density is equal to or greater than the threshold for the alarm level "Alarm 3", it may be determined that only the alarm level "Alarm 3" applies.

[0124] In the above-described embodiment, the number of alarm levels is not limited to three. The number of alarm levels may be two, or may be four or more.

[0125] In the above-described embodiment, the monitoring device 200 may be used as a setting tool. In this case, the monitoring device 200 is individually connected to the smoke alarm panel 100, the dependent smoke sensor 300, or the independent smoke sensor 400 via a third signal line such as a USB (Universal Serial Bus) cable. When connected via the third signal line, the monitoring device 200 exchanges various data with the connected device via the third signal line.

[0126] In the above-mentioned embodiment, the configuration of the various screens displayed on the panel 150 of the smoke alarm panel 100 and the monitoring device 200 is not limited to the above-mentioned example. The panel 150 and the monitoring screen 250 may have any configuration as long as they can display the results of the fire test of at least one of the dependent smoke sensor 300 and the independent smoke sensor 400. This configuration includes color, arrangement, shape, components, and screen transition. In addition, the panel 150 and the monitoring screen 250 may have any configuration as long as they receive an operation to instruct the execution of a fire test. For example, the panel 150 may be configured to include an operation button different from the operation button described in the above-mentioned embodiment, or may be configured without including some buttons. Similarly, the monitoring screen 250 may be configured to include an operation image different from the operation image described in the above-mentioned embodiment, or may be configured without including some operation images.

[0127] In the above-mentioned embodiment, the configuration of the smoke monitoring system 10 is not limited to the above-mentioned example. The smoke monitoring system 10 may be configured to include one or more of the above-mentioned devices, or may be configured to not include some of the devices. For example, the smoke monitoring system 10 may include only the smoke alarm panel 100 and the dependent smoke sensor 300. Alternatively, the smoke monitoring system 10 may include only the monitoring device 200 and the independent smoke sensor 400. In addition, the entity having the function of the smoke monitoring system 10 is not limited to the above-mentioned example.

[0128] 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. In addition, some of the processing steps of the smoke monitoring system 10 may be omitted.

[0129] 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 monitoring device 200, the dependent smoke sensor 300, and the independent smoke sensor 400. Furthermore, yet another aspect of the present invention may provide a program executed in the smoke alarm panel 100, the monitoring device 200, the dependent smoke sensor 300, or the independent smoke sensor 400. This program may be provided by being stored in a computer-readable recording medium, or may be provided by downloading via the Internet or the like. [Explanation of symbols]

[0130] 10: Smoke monitoring system, 100: Smoke alarm panel, 111: Transmitter, 112: Receiver, 113: Display control unit, 114: Transfer unit, 200: Monitoring device, 211: Transmitter, 212: Receiver, 213: Display control unit, 300: Dependent smoke sensor, 311: Acquisition unit, 312: Test unit, 313: Judgment unit, 314: Output unit, 400: Independent smoke sensor, 411: Acquisition unit, 412: Test unit, 413: Judgment unit, 414: Output unit

Claims

1. an acquisition unit that acquires instructions to perform a fire test at each of a plurality of alarm levels that indicate that the concentration of smoke is equal to or greater than a different threshold; a test unit that executes the fire test at each of the plurality of alarm levels in accordance with the execution instruction; An output unit that outputs a result of the fire test, The test section performs the fire test with data corresponding to a smoke concentration equal to or greater than a threshold for each of the plurality of alarm levels. Smoke sensor.

2. A smoke alarm panel and a smoke sensor connected to the smoke alarm panel, the smoke alarm panel transmits instructions to the smoke sensor to perform a fire test at each of a plurality of alarm levels indicating that a concentration of smoke is equal to or greater than a different threshold; The smoke sensor includes: An acquisition unit that acquires the execution instruction; a test unit that executes the fire test at each of the plurality of alarm levels in accordance with the execution instruction; an output unit that outputs a result of the fire test to the smoke alarm panel; The test section performs the fire test with data corresponding to a smoke concentration equal to or greater than a threshold for each of the plurality of alarm levels. Smoke monitoring system.

3. A monitoring device and a smoke sensor connected to the monitoring device, the monitoring device transmitting instructions to the smoke sensor to perform a fire test at each of a plurality of alarm levels indicating that a concentration of smoke is equal to or greater than a different threshold; The smoke sensor includes: An acquisition unit that acquires the execution instruction; a test unit that executes the fire test at each of the plurality of alarm levels in accordance with the execution instruction; an output unit that outputs a result of the fire test to the monitoring device; The test section performs the fire test with data corresponding to a smoke concentration equal to or greater than a threshold for each of the plurality of alarm levels. Smoke monitoring system.

Images