JP7612474B2 - Smoke monitoring systems and smoke sensors - Google Patents

Description

The present invention relates to a smoke monitoring system and a smoke sensor.

There is technology to test the reporting section of a fire receiver that transmits reports to other devices (for example, Patent Document 1).

JP 2018-173988 A

Some smoke sensors have an accumulation function. However, when a test is conducted to output to external equipment based on the test results of the smoke sensor's fire-related operation, if the smoke sensor performs an accumulation operation for a specified period of time, the time required for this test will be longer.

One of the objectives of the present invention is to shorten the time required to test the fire-related operation of a smoke sensor with accumulation function by outputting the results to external equipment.

One aspect of the present invention provides a smoke monitoring system that includes a smoke alarm panel connected to an external facility and a smoke sensor connected to the smoke alarm panel, the smoke sensor having an acquisition unit that acquires an instruction to execute an external output test involving output to the external facility, a test unit that executes a test of a fire-related operation in accordance with the execution instruction without performing a predetermined period of accumulation operation that is performed in a fire test that does not involve output to the external facility, and a transmission unit that transmits the results of the test to the smoke alarm panel, the smoke alarm panel having a receiving unit that receives the results of the test from the smoke sensor and an output unit that outputs a signal to the external facility in accordance with the results of the test.

The present invention can reduce the time required to test the fire-related operation of a smoke sensor with a storage function and output the results to external equipment.

1 is a diagram showing an example of the configuration of a smoke monitoring system according to an embodiment; FIG. 2 illustrates an example of a configuration of a monitoring device. FIG. 2 is a diagram showing an example of the configuration of a smoke alarm panel. FIG. 13 is a diagram showing an example of a transfer report database. FIG. 2 is a diagram showing an example of the configuration of a dependent smoke sensor. 11 is a sequence chart showing an example of an operation of an external output test. FIG. 4 is a diagram showing an example of a monitoring screen displayed on the monitoring device. FIG. 13 is a diagram illustrating an example of a confirmation screen displayed on the monitoring device. FIG. 2 is a diagram showing an example of a panel surface of a smoke alarm panel. 10 is a timing chart showing an example of timing for determining an alarm level. FIG. 13 is a diagram illustrating an example of a notification screen displayed on the monitoring device. FIG. 2 is a diagram showing an example of the configuration of a stand-alone smoke sensor.

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.

The smoke monitoring system 10 comprises a monitoring device 100, a smoke alarm panel 200, and a plurality of slave smoke sensors 300. The monitoring device 100 and the smoke alarm panel 200 are connected via a first signal line 11 such as a LAN (Local Area Network). The smoke alarm panel 200 is connected to a plurality of slave smoke sensors 300 via a second signal line 12. The smoke alarm panel 200 is also connected to an external device 500 via a third signal line 13. Note that although only one smoke alarm panel 200 is shown in FIG. 1, a plurality of smoke alarm panels 200 may be provided.

In the smoke monitoring system 10, a fire test and an external output test are performed at predetermined times, such as during installation and maintenance. The fire test is a test to check whether the dependent smoke sensor 300 operates normally. In the fire test, no output is made to the external equipment 500. The external output test is also called a facing test, and is a test to check whether the operation of transferring a signal to the external equipment 500 in response to the determination of a fire by the dependent smoke sensor 300 is performed normally. This transfer refers to transmitting an alarm. In the external output test, an output is made to the external equipment 500. During the external output test, someone must be present at the external equipment 500 to check whether the signal has been transferred to the external equipment 500. For this reason, it is preferable that the time required for the external output test is short.

The monitoring device 100 is used to collectively monitor the smoke alarm panel 200 and the dependent smoke sensor 300. The monitoring device 100 also instructs the smoke alarm panel 200 and the dependent smoke sensor 300 to perform an external output test.

The smoke alarm panel 200 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. This alarm output includes transmission of the alarm to external equipment 500.

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 200. The term "dependent" here means that the smoke alarm panel 200 is responsible for part of the smoke alarm function. The dependent smoke sensor 300 detects surrounding smoke and transmits the smoke detection results to the smoke alarm panel 200. The dependent smoke sensor 300 also performs tests according to instructions from the monitoring device 100.

The external equipment 500 is an external facility to which the smoke alarm panel 200 transmits a report in response to an alarm. The external equipment 500 includes, for example, warning lights, fire extinguishing equipment, disaster prevention control panels, broadcasting equipment, security company equipment, etc.

FIG. 2 is a diagram showing an example of the configuration of the monitoring device 100. For example, a general-purpose computer is used as the monitoring device 100. The monitoring device 100 includes a control unit 101, a storage unit 102, a communication unit 103, an operation unit 104, and a display unit 105. The various units of the monitoring device 100 are connected via a bus.

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). The communication unit 103 is a communication interface for connecting the device to the first signal line 11. The communication unit 103 is used to communicate with other devices connected via the first signal line 11. The operation unit 104 is used to operate the device. The operation unit 104 includes, for example, a mouse and a keyboard. The display unit 105 displays various information. The display unit 105 includes, for example, a liquid crystal display.

The control unit 101 functions as a transmission unit 111, a reception unit 112, and a display control unit 113. 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 monitoring device 100.

The transmitting unit 111 transmits an instruction to execute an external output test at each of the multiple alarm levels to the smoke alarm panel 200 in response to an operation to instruct execution of an external output test at each of the multiple alarm levels. The multiple alarm levels indicate that the smoke concentration is equal to or greater than different threshold values. In one example, the multiple 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.

When a test is performed by the dependent smoke sensor 300 in accordance with the execution instruction transmitted from the transmission unit 111, the reception unit 112 receives the results of this test from the dependent smoke sensor 300 via the smoke alarm panel 200.

The display control unit 113 displays the test results received by the receiving unit 112 on the display unit 105.

Figure 3 is a diagram showing an example of the configuration of the smoke alarm panel 200. The smoke alarm panel 200 includes a control unit 201, a memory unit 202, a first communication unit 203, a second communication unit 204, an operation unit 205, a display unit 206, and a reporting circuit 207. Each unit of the smoke alarm panel 200 is connected via a bus.

The control unit 201, the memory unit 202, the first communication unit 203, the operation unit 205, and the display unit 206 are basically the same as the control unit 101, the memory unit 102, the communication unit 103, the operation unit 104, and the display unit 105 of the monitoring device 100, respectively. However, the memory unit 202 stores a report database 221 in addition to a program for realizing the functions of the smoke alarm panel 200. The operation unit 205 includes, for example, an operation button. The display unit 206 includes, for example, a 7-segment display and an LED (Light Emitting Diode). The second communication unit 204 is a communication interface for connecting the device to the second signal line 12. The second communication unit 204 is used to communicate with other devices connected via the second signal line 12.

The report circuit 207 reports to the external equipment 500 when an alarm occurs. The report circuit 207 is an example of an "output unit" according to the present invention. The report circuit 207 includes a plurality of relays. Each relay includes a coil and a contact. In one example, the report circuit 207 includes a first relay to a third relay. The first relay to the third relay include a first coil and a first contact, a second coil and a second contact, and a third coil and a third contact, respectively.

The contacts included in the report transfer circuit 207 are connected to the external equipment 500 via the third signal line 13. A signal or alarm level that triggers a report transfer is assigned to these contacts in advance. Each contact includes a first terminal and a second terminal. Normally, no current flows through the coil, so the first terminal is closed and the second terminal is open. On the other hand, when a report transfer trigger assigned to a contact occurs and current flows through the paired coil, the first terminal opens and the second terminal closes. When the second terminal closes, both ends of the second terminal become conductive, and a contact signal is output to the external equipment 500 connected to the second terminal.

The control unit 201 functions as a transfer unit 211, a receiving unit 212, a display control unit 213, and a notification transfer control unit 214. These functions are realized by the control unit 201 executing a program stored in the memory unit 202, and the control unit 201 performing calculations or controlling each part of the smoke alarm panel 200.

The transfer unit 211 transfers the instruction to execute the external output test sent from the monitoring device 100 to the dependent smoke sensor 300. The transfer unit 211 also transfers the test results sent from the dependent smoke sensor 300 to the monitoring device 100.

When a test is performed by the dependent smoke sensor 300, the receiving unit 212 receives the results of the test from the dependent smoke sensor 300.

The display control unit 213 displays the test results received by the receiving unit 212 on the display unit 206.

The transmission control unit 214 outputs a contact signal to the external equipment 500 by switching the connection state of the transmission circuit 207 contacts according to the test results received by the receiving unit 212.

Figure 4 is a diagram showing an example of the report transfer database 221. The report transfer database 221 shows the correspondence between contacts and the report transfer triggers assigned to those contacts. The report transfer database 221 includes contact identifiers and report transfer triggers. The contact identifier is information that uniquely identifies a contact. The report transfer triggers include an alarm level or a signal. Each contact identifier is associated with the report transfer trigger assigned to the contact identified by that contact identifier.

Here, the first to third contacts included in the report transfer circuit 207 are assigned alarm levels "Alarm 1" to "Alarm 3", respectively. In this case, as shown in FIG. 4, the identifier of the first contact is associated with the alarm level "Alarm 1" and stored. The identifier of the second contact is associated with the alarm level "Alarm 2" and stored. Furthermore, the identifier of the third contact is associated with the alarm level "Alarm 3" and stored.

Figure 5 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 memory unit 302, a communication unit 303, and a smoke detection unit 304. Each unit of the dependent smoke sensor 300 is connected via a bus.

The control unit 301, memory unit 302, and communication unit 303 are essentially the same as the control unit 101, memory unit 102, and second communication unit 204 of the smoke alarm panel 200 of the monitoring device 100, respectively. However, the memory unit 302 stores a preset accumulation time in addition to a program for realizing the functions of the dependent smoke sensor 300. This accumulation time is an example of the "predetermined time" according to the present invention.

The smoke detection unit 304 sucks in the surrounding air and measures the smoke concentration. In this way, the smoke detection unit 304 detects smoke present in the surrounding air. The range of smoke concentration that the smoke detection unit 304 can measure is, for example, 0.0001%/m to 20.0%/m. 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. The smoke concentration measured by the smoke detection unit 304 is stored in the memory unit 302.

The control unit 301 functions as an acquisition unit 311, a test unit 312, a determination unit 313, and a transmission unit 314. These functions are realized by the control unit 301 executing a program stored in the memory unit 302, and the control unit 301 performing calculations or controlling each part of the dependent smoke sensor 300.

When an instruction to perform an external output test at each of multiple alarm levels is sent from the monitoring device 100, the acquisition unit 311 acquires the execution instruction via the smoke alarm panel 200.

The test unit 312 performs tests of fire-related operations at each of a plurality of alarm levels in accordance with the execution instructions acquired by the acquisition unit 311, without performing the accumulation operation for a predetermined time period that is performed in a fire test that does not involve output to the external equipment 500. The fire-related operations include operations that are performed when a fire occurs and operations that are performed when a fire warning sign occurs. Note that the test unit 312 may perform a fire test in addition to an external output test. In this case, the test unit 312 does not perform an accumulation operation during an external output test, and performs an accumulation operation during a fire test.

In the dependent smoke sensor 300, different thresholds are preset for each of a number of alarm levels. For example, the alarm level thresholds "Alarm 1" to "Alarm 3" are set in the range of 0.01%/m to 20.0%/m so that the alarm level threshold "Alarm 1" is larger than the alarm level threshold "Alarm 2" and the alarm level threshold "Alarm 3". The thresholds set in this manner are stored in the memory unit 302. The test unit 312 performs a test of the operation related to a fire at the target alarm level by artificially increasing the smoke concentration to the threshold of the target alarm level. The test unit 312 also controls the determination unit 313 so that the accumulation operation is not performed during the external output test.

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

Here, in a fire test that does not involve output to external equipment 500, the judgment unit 313 performs an accumulation operation for the accumulation time stored in the memory unit 302 and then judges the alarm level. For example, if the accumulation time is 20 seconds, the accumulation operation is performed for 20 seconds from the point when the smoke concentration stored in the memory unit 302 first becomes equal to or exceeds the threshold of the target alarm level. Then, when the accumulation time has elapsed, if the smoke concentration stored in the memory unit 302 is equal to or exceeds the threshold of the target alarm level, the judgment unit 313 judges that it corresponds to the target alarm level. On the other hand, in an external output test that involves output to external equipment 500, the judgment unit 313 judges the alarm level without performing this accumulation operation under the control of the test unit 312.

The transmission unit 314 transmits the results of the test performed by the test unit 312 to the smoke alarm panel 200. The test results indicate the smoke concentration stored in the memory unit 302 and the corresponding alarm level determined by the determination unit 313.

6 is a sequence chart showing an example of the operation of the external output test. This operation is started when the external test is performed.

In step S11, the operator uses the operation unit 104 of the monitoring device 100 to select the dependent smoke sensor 300 to be subjected to the external output test and performs an operation to instruct the execution of the external output test.

Figure 7 is a diagram showing an example of a monitoring screen 150 displayed on the display unit 105 of the monitoring device 100. The monitoring screen 150 is displayed on the display unit 105 in response to, for example, an operation by an operator. As shown in Figure 7, the monitoring screen 150 has an operation area 150a, a selection area 150b, and a display area 150c. The operation area 150a includes a "Test" button 151. The "Test" button 151 accepts an operation to specify a target alarm level from among "Alarm 1" to "Alarm 3" and to instruct the execution of an external output test. This operation is realized by the operation unit 104.

Here, the multiple dependent smoke sensors 300 include dependent smoke sensor 300A. For example, when first performing an external output test at an alarm level of "Alarm 1" on dependent smoke sensor 300A, an operator uses the "Test" button 151 on the monitoring screen 150 shown in FIG. 7 to select dependent smoke sensor 300A and perform an operation to instruct the execution of an external output test at an alarm level of "Alarm 1."

Figure 8 is a diagram showing an example of a confirmation screen 165 displayed on the display unit 105 of the monitoring device 100. When an operation is performed to instruct the execution of an external output test, the confirmation screen 165 shown in Figure 8 is displayed on the display unit 105. The confirmation screen 165 includes a message for confirming whether it is OK to start an external output test and a "Yes" button 166. To start an external output test, the operator presses the "Yes" button 166.

In step S12, the transmission unit 111 of the monitoring device 100 transmits, in response to the operation performed in step S11, to the smoke alarm panel 200 to which the dependent smoke sensor 300 to be tested for the external output is connected, an identifier of the dependent smoke sensor 300 to be tested for the external output and a test start command to start an external output test at the target alarm level. This test start command includes the target alarm level. For example, if the dependent smoke sensor 300 to be tested for the external output is the dependent smoke sensor 300A and the target alarm level is "alarm 1", the monitoring device 100 transmits a test start command including the identifier of the dependent smoke sensor 300A and the alarm level of "alarm 1" to the smoke alarm panel 200 to which the dependent smoke sensor 300A is connected. The transfer unit 211 of the smoke alarm panel 200 receives the identifier and the test start command from the monitoring device 100.

In step S13, the transfer unit 211 of the smoke alarm panel 200 transmits the received test start command to the dependent smoke sensor 300 that is to be subjected to the external output test. The destination of the test start command is identified using the identifier received together with the test start command. The acquisition unit 311 of the dependent smoke sensor 300 receives the test start command from the smoke alarm panel 200.

Figure 9 is a diagram showing an example of the panel 250 of the smoke alarm panel 200. When a test start command for an external output test is received, information indicating that an external output test is being performed is displayed on the panel 250 of the smoke alarm panel 200. In this example, the panel 250 includes an indicator light 251 for a "Test" button and an indicator light 252 for "Caution Switch". These indicator lights 251 and 252 are realized, for example, by LEDs. When a test start command for an external output test is received, the indicator light 251 for the "Test" button lights up and the indicator light 252 for "Caution Switch" flashes. These displays indicate that an external output test is in progress.

Returning to FIG. 6, in step S14, when the dependent smoke sensor 300 receives the test start command, it transitions to the external output test mode. When it transitions to the external output test mode, normal alarm operation is not performed.

In step S15, the test unit 312 of the dependent smoke sensor 300 performs a test of the fire-related operation 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 raises the smoke concentration to the threshold of the target alarm level. For example, if the target alarm level is "Alarm 1" and the threshold of the alarm level "Alarm 1" is 0.04%/m, the smoke concentration stored in the memory unit 302 is rewritten to 0.04%/m.

The determination unit 313 compares the smoke concentration stored in the memory 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". For example, if the smoke concentration stored in the memory unit 302 is rewritten to the threshold of the alarm level "Alarm 1", the smoke concentration will be equal to or greater than the threshold of the alarm level "Alarm 1", and therefore it will be determined that the smoke concentration corresponds to the alarm level "Alarm 1". Note that if there is an alarm level lower than the target alarm level, then when the smoke concentration corresponds to the target alarm level, it will also correspond to an alarm level lower than the target alarm level.

Here, in a fire test that does not involve output to the external equipment 500, the judgment unit 313 performs an accumulation operation for the accumulation time stored in the memory unit 302 and then judges the alarm level. However, in an external output test that involves output to the external equipment 500, the judgment unit 313 judges the alarm level without performing this accumulation operation. Specifically, the test unit 312 controls the judgment unit 313 to use an accumulation time of 0 instead of the accumulation time stored in the memory unit 302. However, the accumulation time itself stored in the memory unit 302 is not rewritten. Under the control of the test unit 312, the judgment unit 313 uses an accumulation time of 0, that is, judges the alarm level without performing an accumulation operation. Note that the fire test is performed by artificially increasing the smoke concentration to the threshold value of each alarm level, similar to the external output test.

Figure 10 is a timing chart showing an example of the timing for determining the alarm level. In a fire test, as shown in Figure 10 (a), an accumulation operation is performed for an accumulation time TA stored in the memory unit 302. For example, after the test is started at time t1, if the smoke concentration stored in the memory unit 302 is rewritten to the threshold value of the alarm level "Alarm 1" at time t2, an accumulation operation is performed for the accumulation time TA from time t2. Since the smoke concentration stored in the memory unit 302 remains at the threshold value of the alarm level "Alarm 1", when the accumulation time TA has elapsed at time t3, it is determined that the alarm level is "Alarm 1". In this case, the time required from the start of the test until the alarm level is determined is the time TB from time t1 to time t3.

On the other hand, in the external output test, as shown in FIG. 10(b), no accumulation operation is performed. For example, after the test is started at time t1, when the smoke concentration stored in the memory unit 302 is rewritten to the threshold value of the alarm level "Alarm 1" at time t2, it is immediately determined that the alarm level is "Alarm 1". In this case, the time required from the start of the test until the alarm level is determined is the time TC from time t1 to time t2, which is shorter than the time TB shown in FIG. 10(a).

Returning to FIG. 6, in step S16, when the test performed in step S15 is completed, the transmitting unit 314 of the dependent smoke sensor 300 transmits the identifier of the dependent smoke sensor 300 and the test result to the smoke alarm panel 200 to which the dependent smoke sensor 300 is connected. The test result includes the smoke concentration stored in the memory unit 302 and the alarm information. The smoke concentration is an analog value. The alarm information indicates the corresponding alarm level. For example, a 1-bit value indicating the corresponding alarm level may be used for the alarm information. For example, the test result including the smoke concentration of 0.04%/m stored in the memory unit 302 of the dependent smoke sensor 300A and the alarm information indicating the alarm level of "alarm 1", and the identifier of the dependent smoke sensor 300A are transmitted from the dependent smoke sensor 300A to the smoke alarm panel 200. The receiving unit 212 of the smoke alarm panel 200 receives the identifier and the test result from the dependent smoke sensor 300.

In step S17, the receiver 212 of the smoke alarm panel 200 associates the identifier received from the dependent smoke sensor 300 with the test result and stores them in the memory 202.

In step S18, the display control unit 213 of the smoke alarm panel 200 reads the test results from the memory unit 202 and displays them on the display unit 206. The test results are displayed for each dependent smoke sensor 300 based on the associated identifier.

As shown in FIG. 9, the panel surface 250 of the smoke alarm panel 200 is provided with sensor areas 253 equal to the number of dependent smoke sensors 300 connected to the smoke alarm panel 200. Each sensor area 253 includes a smoke concentration area 254, a bar graph 255, and alarm lights 256-258 labeled "Alarm 1"-"Alarm 3." The alarm lights 256-258 are realized by, for example, LEDs.

The smoke concentration area 254 displays the smoke concentration measured by the dependent smoke sensor 300. The bar graph 255 displays a bar indicating the smoke concentration. The warning lights 256-258 labeled "Alarm 1"-"Alarm 3" are turned on when it is determined that an alarm corresponds to "Alarm 1"-"Alarm 3," respectively.

The test results of the dependent smoke sensor 300A are displayed in the sensor area 253-1 corresponding to the dependent smoke sensor 300A. As described above, if the test results of the dependent smoke sensor 300A include a smoke density of 0.04%/m and alarm information indicating an alarm level of "Alarm 1", the smoke density area 254 of the sensor area 253-1 displays the smoke density of 0.04%/m. The bar graph 255 of the sensor area 253-1 displays a bar indicating the smoke density of 0.04%/m. The alarm light 256 "Alarm 1" is turned on. The alarm light 257 "Alarm 2" and the alarm light 258 "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 external output test.

Returning to FIG. 6, in step S19, the notification control unit 214 of the smoke alarm panel 200 refers to the notification database 221 stored in the memory unit 202 to determine whether a notification trigger assigned to the contact of the notification circuit 207 has occurred.

For example, if the test results stored in the memory unit 202 do not include alarm information, the trigger for the notification assigned to the contact has not occurred (the determination in step S19 is NO), so the process skips step S20, which will be described later, and proceeds to step S21.

On the other hand, if the test results stored in the memory unit 202 contain alarm information and the alarm level indicated by this alarm information is assigned to at least one of the contacts, a trigger for signal transfer has occurred (YES in step S19), and processing proceeds to step S20.

In step S20, the notification control unit 214 of the smoke alarm panel 200 activates a relay that includes a contact that is assigned to the trigger for notification that has occurred. This switches the connection state of the contact included in this relay, and a contact signal is output to the external equipment 500.

For example, assume that the test results of the dependent smoke sensor 300A include alarm information indicating that the alarm level is "Alarm 1." In the report database 221 shown in FIG. 4, the alarm level "Alarm 1" is assigned to the first contact. In this case, the report transfer control unit 214 supplies a signal to the report transfer circuit 207 to activate the first relay including the first contact. This signal causes a current to flow through the first coil included in the first relay. When a current flows through the first coil, the second terminal of the first contact closes, and both ends of the second terminal become conductive. This causes a contact signal to be sent to the external equipment 500 connected to this second terminal.

When the external equipment 500 receives the contact signal, it performs a predetermined process. This predetermined process may include, for example, sound output, light emission, operation, control of other devices, alarm display, or a combination of at least two of these. This allows workers at the location where the external equipment 500 is installed to know that the notification was normally transferred from the smoke alarm panel 200 to the external equipment 500 in response to the occurrence of an alarm.

In step S21, the transfer unit 211 of the smoke alarm panel 200 transmits the identifier and test result received from the dependent smoke sensor 300 to the monitoring device 100. The receiving unit 112 of the monitoring device 100 receives the identifier and test result from the smoke alarm panel 200.

In step S22, the receiver 112 of the monitoring device 100 associates the identifier received from the smoke alarm panel 200 with the test result and stores them in the memory unit 102.

In step S23, the display control unit 113 of the monitoring device 100 reads the test results from the memory unit 102 and displays them on the display unit 105. The test results are displayed for each dependent smoke sensor 300 based on the associated identifier.

In the monitoring screen 150 shown in FIG. 7, the selection area 150b includes a selection button 152. The selection button 152 accepts an operation to select a smoke alarm panel 200. In the display area 150c, sensor areas 159 are displayed in the same number as the number of dependent smoke sensors 300 to be displayed. Each sensor area 159 includes a status display area 153, a smoke concentration area 154, a bar graph 155, and alarm symbols 156-158 labeled "Alarm 1"-"Alarm 3."

The status display area 153 displays the status of the dependent smoke sensor 300. While an external output test is being performed, the status display area 153 displays the status "External Output Test". The smoke density area 154 displays the smoke density measured by the dependent smoke sensor 300. The bar graph 155 displays a bar indicating this smoke density. The alarm symbols 156-158, "Alarm 1"-"Alarm 3", are lit when they correspond to the alarm levels "Alarm 1"-"Alarm 3", respectively. This lit display refers to a prominent display in a color such as red.

The test results of the dependent smoke sensor 300A are displayed in the sensor area 159-1 corresponding to the dependent smoke sensor 300A. If the test results of the dependent smoke sensor 300A include a smoke density of 0.04%/m and alarm information indicating an alarm level of "alarm 1", the smoke density area 154 of the sensor area 159-1 displays a smoke density of 0.04%/m. The bar graph 155 of the sensor area 159-1 displays a bar indicating a smoke density of 0.04%/m. The alarm symbol 156 of "alarm 1" is displayed lit. The alarm symbol 157 of "alarm 2" and the alarm symbol 158 of "alarm 3" are displayed unlit. This unlit display refers to a display in an unlit color such as gray so as not to stand out. This display allows the operator to confirm that the alarm operation of the alarm level of "alarm 1" was performed normally in the external output test.

Returning to FIG. 6, in step S24, the transmission unit 111 of the monitoring device 100 determines whether or not to change the alert level and perform the next external output test. For example, if an operator changes the alert level and performs an operation to instruct the execution of the next external output test, the transmission unit 111 determines that the alert level will be changed and the next external output test will be performed (YES in step S24). In this case, the process returns to step S12 described above, and the process from step S12 onward is performed with the changed alert level as the target alert level.

11 is a diagram showing an example of a notification screen 170 displayed on the display unit 105 of the monitoring device 100 while an external output test is being performed. While an external output test is being performed at an alarm level of "alarm 1", a notification screen 170A shown in FIG. 11(a) is displayed. The notification screen 170A includes an alarm level of "alarm 1" and a message indicating that an external output test is being performed. The notification screen 170A also accepts an operation to instruct the dependent smoke sensor 300 that is the subject of the external output test to start an external output test at "alarm 2", which is the next highest alarm level after "alarm 1". In this example, the notification screen 170A includes a message inquiring whether to change the alarm level to "alarm 2" and a "Yes" button 171. To subsequently start an external output test at an alarm level of "alarm 2", the operator presses the "Yes" button 171.

In response to this operation, a test start command including an alarm level of "alarm 2" is sent from the monitoring device 100 to the dependent smoke sensor 300A via the smoke alarm panel 200. Upon receiving the test start command, the dependent smoke sensor 300A continues the test mode and performs a test at the alarm level of "alarm 2". Here, the threshold value of the alarm level of "alarm 2" is assumed to be 0.06%/m. In this case, the smoke concentration stored in the memory unit 302 is rewritten to 0.06%/m. Then, without performing an accumulation operation, it is determined that the alarm levels of "alarm 1" and "alarm 2" are met. Then, the test result including the smoke concentration of 0.06%/m and alarm information indicating the alarm levels of "alarm 1" and "alarm 2" is sent from the dependent smoke sensor 300A to the smoke alarm panel 200. The smoke alarm panel 200 stores this test result in the memory unit 202 and displays it on the display unit 206 in the same manner as in the example shown in FIG. 9. In addition, in the report transfer database 221 shown in FIG. 4, an alarm level of "Alarm 2" is assigned to the second contact, so in addition to the first contact that has already been activated, the second relay including the second contact is activated, and a contact signal is sent to the external equipment 500 connected to the second contact. Furthermore, this test result is sent from the smoke alarm panel 200 to the monitoring device 100. The monitoring device 100 stores this test result in the memory unit 102 and displays it on the display unit 105 in the same manner as the example shown in FIG. 7.

While an external output test is being performed at the alarm level "Alarm 2", the display unit 105 of the monitoring device 100 displays a notification screen 170B as shown in FIG. 11(b). The notification screen 170B includes the alarm level "Alarm 2" and a message indicating that an external output test is being performed. The notification screen 170B also accepts an operation to instruct the dependent smoke sensor 300 that is the subject of the external output test to start an external output test at "Alarm 3", which is the next highest alarm level after "Alarm 2". In this example, the notification screen 170B includes a message inquiring whether to change the alarm level to "Alarm 3" and a "Yes" button 172. To subsequently perform an external output test at the alarm level "Alarm 3", the operator presses the "Yes" button 172.

In response to this operation, a test start command including an alarm level of "alarm 3" is sent from the monitoring device 100 to the dependent smoke sensor 300A via the smoke alarm panel 200. Upon receiving the test start command, the dependent smoke sensor 300A continues the test mode and performs a test at the alarm level of "alarm 3". Here, the threshold value of the alarm level of "alarm 3" is assumed to be 0.08%/m. In this case, the smoke concentration stored in the memory unit 302 is rewritten to 0.08%/m. Then, without performing an accumulation operation, it is determined that the alarm level corresponds to "alarm 1" to "alarm 3". Then, the test result including the smoke concentration of 0.08%/m and alarm information indicating the alarm levels of "alarm 1" to "alarm 3" is sent from the dependent smoke sensor 300A to the smoke alarm panel 200. The smoke alarm panel 200 stores this test result in the memory unit 202 and displays it on the display unit 206 in the same manner as the example shown in FIG. 9. In addition, in the report transfer database 221 shown in FIG. 4, an alarm level of "Alarm 3" is assigned to the third contact, so in addition to the first and second contacts that have already been activated, a third relay including the third contact is activated, and a contact signal is sent to the external equipment 500 connected to the third contact. Furthermore, this test result is sent from the smoke alarm panel 200 to the monitoring device 100. The monitoring device 100 stores this test result in the memory unit 102 and displays it on the display unit 105 in the same manner as the example shown in FIG. 7.

Returning to FIG. 6, if the operator performs an operation to instruct the end of the external output test in step S24 described above, the transmission unit 111 determines that the next external output test will not be performed (the determination in step S24 is NO). In this case, the process proceeds to step S25.

For example, while an external output test is being performed at an alarm level of "Alarm 3", the display unit 105 of the monitoring device 100 displays a notification screen 170C shown in FIG. 11(c). The notification screen 170C includes the alarm level of "Alarm 3" and a message indicating that an external output test is being performed. The notification screen 170C also accepts an operation to instruct the end of the external output test. In this example, the notification screen 170C includes an "End Test" button 173. To end the external output test, the operator presses the "End Test" button 173. When the "End Test" button 173 is pressed, it is determined that the next external output test will not be performed.

Returning to FIG. 6, in step S25, the transmission unit 111 of the monitoring device 100 transmits to the smoke alarm panel 200 to which the dependent smoke sensor 300 that is the subject of the external output test is connected an identifier of the dependent smoke sensor 300 that is the subject of the external output test, and a test end command that instructs the end of the external output test at the target alarm level. For example, the monitoring device 100 transmits the identifier of the dependent smoke sensor 300A and a test end command to the smoke alarm panel 200 to which the dependent smoke sensor 300A is connected. The transfer unit 211 of the smoke alarm panel 200 receives the identifier and the test end command from the monitoring device 100.

In step S26, the transfer unit 211 of the smoke alarm panel 200 transmits the received test end command to the dependent smoke sensor 300 that is the subject of the external output test. The destination of this test start command is identified using the identifier received together with the test end command. The acquisition unit 311 of the dependent smoke sensor 300 receives the test end command from the smoke alarm panel 200.

When a test end command for the external output test is received, the indicator light 251 of the "Test" button and the indicator light 252 "Caution Switch" shown in FIG. 9 are turned off on the panel surface 250 of the smoke alarm panel 200. In addition, the first to third contacts are deactivated, and the transmission of contact signals to the external equipment 500 is stopped.

In step S27, when the dependent smoke sensor 300 receives the test end command, it returns from the external output test mode to the normal alarm mode. This resumes 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. Next, 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 200. 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 200. In addition, a contact corresponding to the alarm level is activated, and a contact signal is transmitted to the external equipment 500 connected to the activated contact.

According to the above-described embodiment, since the accumulation operation is not performed in the dependent smoke sensor 300 in the external output test, the time required for the external output test is shortened. In particular, when the external output tests at a plurality of alarm levels, "alarm 1" to "alarm 3", are performed in sequence, the accumulation operation is omitted in each of the external output tests at these alarm levels, so the time from the start of the external output test at the alarm level "alarm 1" to the end of the external output test at the alarm level "alarm 3" is significantly shortened. In addition, in the above-described embodiment, the accumulation time itself set in the dependent smoke sensor 300 is not changed during the external output test. If the accumulation time set in the dependent smoke sensor 300 is changed to 0 when the external output test is performed, for example, if an operator forgets to return the accumulation time to the original time set after the external output test, the accumulation operation will not be performed during the fire test. However, in the above-described embodiment, since the accumulation time itself set in the dependent smoke sensor 300 is not changed during the external output test, the accumulation operation will be performed during the fire test even if the operator does not perform the operation to return the accumulation time. This prevents the accumulation operation from not being performed during a fire test due to forgetting to reset the accumulation time. Furthermore, because the monitoring device 100 accepts an operation to instruct the execution of an external output test, an operator can instruct the execution of an external output test by operating the monitoring device 100.

Furthermore, because the external output test is performed separately for the alarm levels "Alarm 1" to "Alarm 3", it is possible to individually check whether the first to third contacts, to which the alarm levels "Alarm 1" to "Alarm 3" are assigned, are operating normally. For example, if the alarm levels "Alarm 1" to "Alarm 3" are assigned to the first to third contacts, respectively, when the external output test is performed for the alarm level "Alarm 3", it is determined that all of the alarm levels "Alarm 1" to "Alarm 3" are met, and a contact signal is output to the external equipment 500 connected to the first to third contacts. However, in this example, it may not be possible to determine whether the output of the contact signal to the external equipment 500 was triggered by reaching the alarm level "Alarm 1", the alarm level "Alarm 2", or the alarm level "Alarm 3". However, by performing separate external output tests for the alarm levels "Alarm 1" to "Alarm 3," it is possible to individually check whether a contact signal was normally output to the external equipment 500 when each of the alarm levels "Alarm 1" to "Alarm 3" was reached.

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.
Variation 1

In the above-described embodiment, the smoke monitoring system 10 may include one or more independent smoke sensors 400 that transmit and output a signal to an external device 500. The independent smoke sensor 400 is connected to the monitoring device 100 via a first signal line 11. The independent smoke sensor 400 is also connected to the external device 500 via a fourth signal line.

The independent smoke sensor 400 is also called a stand-alone type smoke sensor, and is a smoke sensor that operates independently without requiring the smoke alarm panel 200. Here, "operates independently" means that the smoke alarm function can be realized without relying on other devices. The independent smoke sensor 400 detects surrounding smoke and outputs an alarm according to the smoke detection result. The independent smoke sensor 400 also performs tests according to instructions from the monitoring device 100.

Figure 12 is a diagram showing an example of the configuration of a stand-alone smoke sensor 400. The stand-alone smoke sensor 400 includes a control unit 401, a memory unit 402, a communication unit 403, a smoke detection unit 404, an operation unit 405, a display unit 406, and a reporting circuit 407. Each unit of the stand-alone smoke sensor 400 is connected via a bus.

The control unit 401, the memory unit 402, the communication unit 403, the smoke detection unit 404, the operation unit 405, the display unit 406, and the report circuit 407 are basically the same as the control unit 101, the memory unit 102, the communication unit 103, the smoke detection unit 304 of the dependent smoke sensor 300, the operation unit 205, the display unit 206, and the report circuit 207 of the smoke alarm panel 200, respectively, of the monitoring device 100. The report circuit 407 is an example of an "output unit" according to the present invention. However, in addition to a program for realizing the function of the independent smoke sensor 400, the memory unit 402 stores a preset accumulation time for the independent smoke sensor 400 and a report database 421 similar to the report database 221 shown in FIG. 4. The smoke concentration measured by the smoke detection unit 404 is stored in the memory unit 402.

The control unit 401 functions as an acquisition unit 411, a test unit 412, a judgment unit 413, a transmission unit 414, a display control unit 415, and a report transfer control unit 416. These functions are realized by the control unit 401 executing a program stored in the memory unit 402, and the control unit 401 performing calculations or controlling each part of the stand-alone smoke sensor 400.

The acquisition unit 411, the test unit 412, the judgment unit 413, the transmission unit 414, the display control unit 415, and the report transfer control unit 416 are basically the same as the acquisition unit 311, the test unit 312, the judgment unit 313, the transmission unit 314, the display control unit 213, and the report transfer control unit 214 of the dependent smoke sensor 300, respectively. However, the acquisition unit 311 acquires an instruction to perform an external output test from the monitoring device 100 or in response to an operation of the operation unit 405. The transmission unit 414 transmits the test results to the monitoring device 100.

In a first operation example of this modified example, the monitoring device 100 instructs the independent smoke sensor 400 to perform an external output test. Here, the independent smoke sensor 400 is assumed to include the independent smoke sensor 400A. For example, when performing an external output test at an alarm level of "alarm 1" on the independent smoke sensor 400A, the worker uses the "test" button 151 on the monitoring screen 150 shown in FIG. 7 to select the independent smoke sensor 400A and instructs the execution of an external output test at an alarm level of "alarm 1".

In response to this operation, a test start command including an alarm level of "alarm 1" is sent from the monitoring device 100 to the independent smoke sensor 400A. Upon receiving the test start command, the independent smoke sensor 400A transitions to a test mode and executes a test at the alarm level of "alarm 1" without performing an accumulation operation. If the test determines that the alarm level of "alarm 1" is met, the connection state of the contact of the reporting circuit 407 to which that alarm level is assigned is switched, and a contact signal is sent to the external equipment 500 connected to this contact. In addition, the test result is sent from the independent smoke sensor 400A to the monitoring device 100. The monitoring device 100 stores the test result in the memory unit 102 and displays it on the display unit 105 in the same manner as the example shown in FIG. 7.

As a second operation example of this modified example, an instruction to execute an external output test is given using the operation unit 405 of the independent smoke sensor 400, without using the monitoring device 100. For example, when an external output test is to be performed on the independent smoke sensor 400A at an alarm level of "alarm 1", an operator uses the operation unit 405 of the independent smoke sensor 400A to give an instruction to execute an external output test at an alarm level of "alarm 1".

In response to this operation, a test start command including the alarm level "Alarm 1" is input to the independent smoke sensor 400A. When the test start command is input, the independent smoke sensor 400A transitions to a test mode and executes a test at the alarm level "Alarm 1" without performing an accumulation operation. If this test determines that the alarm level "Alarm 1" is met, the connection state of the contact of the reporting circuit 407 to which that alarm level is assigned is switched, and a contact signal is sent to the external equipment 500 connected to this contact. The test result is also displayed on the display unit 406.

According to this modified example, no accumulation operation is performed even during the external output test from the stand-alone smoke sensor 400 to the external equipment 500, so the time required for this external output test is reduced.

Variation 2
In the above-described embodiment or modified example, the accumulation time used in the external output test does not necessarily have to be 0. For example, an accumulation time shorter than the accumulation time used in the fire test may be used in the external output test. For example, if the accumulation time set for the dependent smoke sensor 300 or the independent smoke sensor 400 is 20 seconds, the accumulation operation may be performed in the external output test using a time that is a predetermined time less than this accumulation time, for example, 5 seconds. This modified example also shortens the time required for the external output test.

Variation 3
In the above-described embodiment or modification, the monitoring device 100 may be used as a setting tool. In this modification, the monitoring device 100 may be, for example, a portable computer carried by an operator. The monitoring device 100 is individually connected to the smoke alarm panel 200, the dependent smoke sensor 300, or the independent smoke sensor 400 via a fifth signal line such as a USB (Universal Serial Bus) cable. When connected to a destination device via the fifth signal line, the monitoring device 100 exchanges various data with the destination device via the fifth signal line.

Variation 4
In the above-described embodiment or modified example, the contacts included in the report transfer circuit 207 or 407 may be C contacts, or A contacts, or B contacts. The relay may be a contact relay or a contactless relay. Furthermore, the number of contacts included in the report transfer circuit 207 or 407 may be less than three, or more than three. Furthermore, all of the alarm levels "Alarm 1" to "Alarm 3" do not have to be assigned to the contacts. Only one or two of the multiple alarm levels "Alarm 1" to "Alarm 3" may be assigned to the contacts.

Variation 5
In the above-described embodiment or modification, a plurality of external equipment 500 may be provided. In this case, at least one of the plurality of contacts included in the report circuit 207 or 407 may be connected to an external equipment 500 different from the other contacts, or the plurality of contacts may be connected to different external equipment 500. In addition, the contacts and the external equipment 500 may be connected by wire or wirelessly.

Variation 6
In the above-described embodiment or modification, if the smoke concentration 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 concentration 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 concentration 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 concentration 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.

Variation 7
In the above-described embodiment or modified example, the number of alarm levels is not limited to three. The number of alarm levels may be two, or may be four or more.

Variation 8
In the above-described embodiment or variant, the smoke alarm panel 200, together with or instead of the monitoring device 100, may accept an operation to instruct the execution of an external output test, and in response to this operation, send a test start command to the dependent smoke sensor 300.

Variation 9
In the above-mentioned embodiment or modification, the configuration of the various screens displayed on the monitoring device 100 and the panel surface 250 of the smoke alarm panel 200 is not limited to the above-mentioned example. The monitoring screen 150 and the panel surface 250 may have any configuration as long as they can display the test results of the dependent smoke sensor 300 or the independent smoke sensor 400. This configuration includes color, arrangement, shape, components, and screen transition. In addition, the monitoring screen 150 may have any configuration as long as it accepts an operation to instruct the execution of an external output test. For example, the monitoring screen 150 may be configured to include an operation image different from the operation image described in the above-mentioned embodiment, or may be configured to not include some operation images.

Modification 10
In the above-mentioned embodiment or modified example, 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 a monitoring device 100, a smoke alarm panel 200, a dependent smoke sensor 300, and an independent smoke sensor 400. Alternatively, the smoke monitoring system 10 may include only 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.

Variation 11
In the above-described embodiment or modified example, 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.

Modification 12
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 monitoring device 100, the smoke alarm panel 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 monitoring device 100, the smoke alarm panel 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.

10: Smoke monitoring system, 100: Monitoring device, 111: Transmitter, 112: Receiver, 113: Display controller, 200: Smoke alarm panel, 207: Reporting circuit, 211: Transfer unit, 212: Receiver, 213: Display controller, 214: Reporting controller, 300: Dependent smoke sensor, 311: Acquisition unit, 312: Test unit, 313: Judgment unit, 314: Transmitter, 400: Independent smoke sensor, 407: Reporting circuit, 411: Acquisition unit, 412: Test unit, 413: Judgment unit, 414: Transmitter, 415: Display controller, 416: Reporting controller, 500: External equipment

Claims (5)

A smoke alarm panel connected to an external device and a smoke sensor connected to the smoke alarm panel,
The smoke sensor includes:
an acquisition unit that acquires an execution instruction for an external output test involving output to the external equipment;
a test unit that performs a test of an operation related to a fire according to the execution instruction without performing an accumulation operation for a predetermined time that is performed in a fire test that does not involve an output to the external equipment;
A first transmitting unit that transmits a result of the test to the smoke alarm panel,
The smoke alarm panel is
a receiver for receiving a result of the test from the smoke sensor;
and an output section for outputting a signal to the external equipment in response to a result of the test. A monitoring device connected to the smoke alarm panel,
The monitoring device has a second transmission unit that transmits the execution instruction of the external output test to the smoke alarm panel in response to an operation of instructing execution of the external output test,
The smoke monitoring system according to claim 1 , wherein the smoke alarm panel further comprises a transfer unit that transfers the execution instruction to the smoke sensor. The acquisition unit acquires the execution instruction for the external output test at each of a plurality of alarm levels indicating that a smoke concentration is equal to or greater than a different threshold value,
The test section performs the test at each of the plurality of alarm levels;
the result of the test indicates a corresponding alarm level determined in the test from among the plurality of alarm levels;
3. The smoke monitoring system of claim 1, wherein the output unit has a contact connected to the external equipment, the contact being assigned at least one of the plurality of alarm levels, and when the receiving unit receives a result of the test indicating the alarm level assigned to the contact, the output unit outputs the signal to the external equipment by switching the connection state of the contact. an acquisition unit that acquires an instruction to execute an external output test involving output to an external device;
a test unit that performs a test of an operation related to a fire according to the execution instruction without performing an accumulation operation for a predetermined time that is performed in a fire test that does not involve an output to the external equipment;
and an output unit that outputs a signal to the external equipment depending on a result of the test. The acquisition unit acquires an instruction to execute the external output test at each of a plurality of alarm levels indicating that a smoke concentration is equal to or greater than a different threshold value,
The test section performs the test at each of the plurality of alarm levels;
The smoke sensor of claim 4, wherein the output unit has a contact connected to the external equipment, and has a contact to which at least one of the plurality of alarm levels is assigned, and when it is determined in the test that the alarm level assigned to the contact is met, the output unit outputs the signal to the external equipment by switching the connection state of the contact.

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