Smoke alarm panel and smoke sensor

Abstract

To provide a smoke alarm board for informing an alarm-transfer destination, when a concentration of smoke measured by a smoke sensor reaches an alarm level desired by a user, to that effect.SOLUTION: A smoke monitoring system is arranged in a fire prevention object such as a server room, a data center, or a clean room. In the system, a smoke alarm board 200 to which a plurality of subordinate smoke sensors are connected via signal lines includes: an acquisition section for acquiring an alarm level corresponding to a concentration of smoke measured by the smoke sensor among the plurality of alarm levels; an alarm-transfer circuit having contact points to be connected to alarm-transfer destinations; an assignment section for assigning to the contact points the alarm levels selected by a user among the alarm levels; and an alarm-transfer control section for controlling the alarm-transfer circuit to output a signal to the alarm-transfer destination by switching the connection state of the contact point when the acquisition section acquires the alarm level assigned to the contact point.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a smoke alarm panel and a smoke sensor.

Background Art

[0002] There is known a technique of providing a transfer contact as an option to a fire receiver and allocating transfer information to this transfer contact (for example, Patent Document 1).

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] For example, when a fire signal is assigned to a contact, an alarm is transmitted to the transfer destination when the fire signal is generated. However, in a smoke monitoring system, the concentration of smoke for which a user desires alarm transmission may vary.

[0005] One object of the present invention is to transmit this information to a transfer destination when the concentration of smoke measured by a smoke sensor reaches a desired alarm level of the user.

Means for Solving the Problems

[0006] One aspect of the present invention provides a smoke alarm panel including a transfer circuit having a contact connected to a transfer destination, an allocation unit that allocates an alarm level selected by a user from a plurality of alarm levels to the contact, an acquisition unit that acquires an alarm level corresponding to the concentration of smoke measured by a smoke sensor, and a transfer control unit that controls the transfer circuit to switch the connection state of the contact and output a signal to the transfer destination when the alarm level assigned to the contact is acquired by the acquisition unit.

Effects of the Invention

[0007] According to the present invention, when the concentration of smoke measured by the smoke sensor reaches the desired warning level of the user, this information can be transmitted to the transfer destination.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Mode for Carrying Out the Invention

[0009] Configuration FIG. 1 is a diagram showing an example of the configuration of the smoke monitoring system 10 according to the embodiment. The smoke monitoring system 10 is installed in a fire protection target such as a server room, a data center, or a clean room. The smoke monitoring system 10 detects a sign of fire by monitoring the state of the ambient air of the fire protection target. In this way, by detecting a sign of fire, it becomes possible to quickly take measures at an early stage.

[0010]

[0011] ​The slave-type smoke sensor 100, also called a communication-type smoke sensor, is a smoke sensor subordinate to the smoke alarm panel 200. Here, "subordinate" means that the smoke alarm panel 200 undertakes part of the smoke alarm function. The slave-type smoke sensor 100 detects the surrounding smoke and transmits the detection result to the smoke alarm panel 200.

[0012] The smoke alarm panel 200 is a device that receives the smoke detection result from the slave-type smoke sensor 100 and outputs an alarm according to this detection result.

[0013] Figure 2 is a diagram showing an example of the configuration of the slave-type smoke sensor 100. The slave-type smoke sensor 100 includes a control unit 101, a storage unit 102, a communication unit 103, and a smoke detection unit 104. Each part of the slave-type smoke sensor 100 is connected via a bus.

[0014] The control unit 101 is a processor that controls each part of the device itself and performs various processes. The control unit 101 includes, for example, a CPU (Central Processing Unit). The storage unit 102 is a memory that stores programs and various data for realizing the functions of the device itself. The storage unit 102 includes at least one of, for example, 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 itself to the signal line 300. The communication unit 103 is used to communicate with other devices connected via the signal line 300.

[0015] The smoke detection unit 104 sucks in the surrounding air and measures the smoke concentration. Thereby, the smoke detection unit 104 detects the smoke present in the surrounding air. The range of the smoke concentration that the smoke detection unit 104 can measure is, for example, from 0.0001% / m to 20.0% / m. For smoke detection, for example, the total scattering light method or the two-receiving light method is used. However, the method of detecting smoke is not limited to these methods, and other methods may also be used.

[0016] The control unit 101 functions as a determination unit 111 and a transmission unit 112. These functions are realized by the control unit 101 executing a program stored in the storage unit 102, causing the control unit 101 to perform calculations or control each part of the dependent smoke sensor 100.

[0017] The determination unit 111 determines whether the measured smoke concentration by the smoke detection unit 104 corresponds to any of a plurality of alarm levels. The plurality of alarm levels are, for example, a three - level alarm system of "Alarm 1", "Alarm 2", and "Alarm 3". "Alarm 1" is the lowest alarm level. "Alarm 2" is the second - lowest alarm level. "Alarm 3" is the highest alarm level.

[0018] The transmission unit 112 transmits the measured smoke concentration by the smoke detection unit 104 and the determination result of the determination unit 111 to the smoke alarm panel 200.

[0019] 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 storage unit 202, a communication unit 203, an operation unit 204, a display unit 205, and a transfer circuit 206. Each part of the smoke alarm panel 200 is connected via a bus.

[0020] The control unit 201, the storage unit 202, and the communication unit 203 are basically the same as the control unit 101, the storage unit 102, and the communication unit 103 shown in Figure 2, respectively. However, the storage unit 202 stores a program for realizing the functions of the smoke alarm panel 200 and a transfer database 221.

[0021] The operation unit 204 is used for operating the device itself. The operation unit 204 includes, for example, operation buttons. The display unit 205 displays various types of information. The display unit 205 includes at least one of, for example, a 7 - segment display, an LED (Light Emitting Diode), and a liquid crystal display.

[0022] The transfer circuit 206 transfers information when an alarm or an abnormality occurs. Here, the transfer of information means transmitting an alarm to the transfer destination.

[0023] FIG. 4 is a diagram showing an example of the transfer circuit 206. The transfer circuit 206 includes relays 260A to 260E (hereinafter also collectively referred to as "relay 260"). Relays 260A to 260C each have a coil 261A to 261C and a normally-closed contact 262A to 262C. Relays 260D and 260E each have a coil 261D and 261E and a changeover contact 262D and 262E. In the following description, the coils 261A to 261E are also collectively referred to as "coil 261". Also, the normally-closed contacts 262A to 262C and the changeover contacts 262D and 262E are also collectively referred to as "contact 262".

[0024] The coil 261 switches the connection state of the contact 262 by electromagnetic force. Normally, no current flows through the coil 261.

[0025] A signal or an alarm level that triggers the transfer of information is assigned to the contact 262. Predetermined triggers for the transfer of information are assigned to the normally-closed contacts 262A to 262C regardless of the selection of the general user. On the other hand, for the changeover contacts 262D and 262E, no trigger for the transfer of information is assigned in the initial state so that the general user can freely select the trigger for the transfer of information.

[0026] The normally-closed contacts 262A to 262C and the changeover contacts 262D and 262E each include a first terminal 263A to 263E (hereinafter also collectively referred to as "first terminal 263") and a second terminal 264A to 264E (hereinafter also collectively referred to as "second terminal 264"). Normally, the first terminal 263 is closed and the second terminal 264 is open. On the other hand, when the trigger for the transfer of information assigned to the contact 262 occurs and current flows through the corresponding coil 261, the first terminal 263 opens and the second terminal 264 closes. When the second terminal 264 closes, both ends of the second terminal 264 are electrically connected, and a contact signal is output to the connection destination of the second terminal 264.

[0027] FIG. 5 is a diagram showing an example of the transfer information database 221. The transfer information database 221 shows the correspondence between the contact point 262 and the opportunity for transfer information assigned to the contact point 262. The transfer information database 221 includes a contact point identifier and an opportunity for transfer information. The contact point identifier is information that uniquely identifies the contact point 262. The opportunity for transfer information includes an alarm level or a signal. Each contact point identifier is associated with the opportunity for transfer information assigned to the contact point 262 identified by the contact point identifier.

[0028] Here, it is assumed that the default contact points 262A to 262C are respectively assigned an alarm level of "Alarm 1", an alarm level of "Alarm 3", and an abnormal signal. In this case, as shown in FIG. 5, the identifier of the default contact point 262A and the alarm level of "Alarm 1" are stored in association with each other. Also, the identifier of the default contact point 262B and the alarm level of "Alarm 3" are stored in association with each other. Further, the identifier of the default contact point 262C and the abnormal signal are stored in association with each other.

[0029] Returning to FIG. 3, the control unit 201 functions as an assignment unit 211, an acquisition unit 212, and a transfer information control unit 213. These functions are realized by the control unit 201 executing a program stored in the storage unit 202, causing the control unit 201 to perform calculations or control each part of the smoke alarm panel 200.

[0030] The assignment unit 211 assigns an alarm level selected by a general user from a plurality of alarm levels to the arbitrary contact points 262D and 262E.

[0031] The acquisition unit 212 acquires the smoke concentration measured by each slave type smoke sensor 100 and the determination result as to whether it corresponds to any of a plurality of alarm levels. For example, when the smoke concentration corresponds to any of a plurality of alarm levels, this determination result indicates the corresponding alarm level.

[0032] When the alarm level assigned by the allocation unit 211 is acquired by the acquisition unit 212, the transfer control unit 213 controls the transfer circuit 206 to switch the connection state of the optional contacts 262D or 262E and output a contact signal.

[0033] Operation Initial setting Before the smoke alarm panel 200 is installed, the general user can select the transfer trigger to be assigned to the optional contacts 262D and 262E from among the candidates for the transfer trigger determined in advance. Here, it is assumed that the candidates for the transfer trigger include the alarm levels of "Alarm 1", "Alarm 2", "Alarm 3", and an abnormal signal.

[0034] Here, as shown in FIG. 5, the alarm levels of "Alarm 1" and "Alarm 3" are respectively pre-assigned to the fixed contacts 262A and 262B. That is, the alarm levels assigned to the fixed contacts 262A and 262B are included in the candidates for the transfer trigger. Therefore, for example, if the alarm level of "Alarm 3" is assigned to the optional contact 262D or 262E, and the fixed contact 262B and the optional contact 262D or 262E are connected to different transfer destinations, when an alarm of the alarm level of "Alarm 3" occurs, this information can be transmitted to a plurality of transfer destinations. The alarm levels of "Alarm 1" and "Alarm 3" are examples of the "first alarm level" according to the present invention. The fixed contact 262B is an example of the "first contact" according to the present invention. The optional contact 262D or 262E is an example of the "second contact" according to the present invention.

[0035] On the other hand, the alarm level of "Alarm 2" is not assigned to any of the fixed contacts 262A to 262C. Therefore, for example, if the alarm level of "Alarm 2" is assigned to the optional contact 262D or 262E, when an alarm of the alarm level of "Alarm 2" occurs, this information can be transmitted to the transfer destination.

[0036] The manufacturer of the smoke alarm panel 200 acquires the allocation information indicating the trigger for transfer reporting selected by the general user for the optional contacts 262D and 262E. Then, the manufacturer connects a terminal device (not shown) to the smoke alarm panel 200 and uses the terminal device to perform an operation of allocating the trigger for transfer reporting selected by the general user to the optional contacts 262D and 262E based on this allocation information. This terminal device is, for example, a general-purpose computer. The allocation unit 211 of the smoke alarm panel 200 allocates the trigger for transfer reporting to the optional contacts 262D and 262E by adding the information corresponding to this operation to the transfer reporting database 221 stored in the storage unit 202.

[0037] Here, it is assumed that the general user has selected the alarm level of "Alarm 2" for the optional contact 262D and the alarm level of "Alarm 3" for the optional contact 262E. In this case, as shown in FIG. 5, the identifier of the optional contact 262D and the alarm level of "Alarm 2" are associated and added to the transfer reporting database 221. Also, as shown in FIG. 5, the identifier of the optional contact 262E and the alarm level of "Alarm 3" are associated and added to the transfer reporting database 221. In this way, after the trigger for transfer reporting is allocated to the optional contacts 262D and 262E, the smoke alarm panel 200 is installed on the fire protection target.

[0038] In addition, the general user can determine the transfer reporting destination for each contact 262. The transfer reporting destination includes external devices such as warning lights, fire extinguishing equipment, disaster prevention control panels, broadcasting equipment, and equipment of security companies, as well as the display unit 205. Here, it is assumed that the general user has determined the transfer reporting destinations of the default contacts 262A to 262C and the optional contact 262D to the first transfer reporting destination, and the transfer reporting destination of the optional contact 262E to a second transfer reporting destination different from the first transfer reporting destination. In this case, as shown in FIG. 4, when the smoke alarm panel 200 is installed, the default contacts 262A to 262C and the optional contact 262D are connected to the first transfer reporting destination via the signal line 310. On the other hand, the optional contact 262E is connected to the second transfer reporting destination via the signal line 310.

[0039] Transfer reporting operation FIG. 6 is a sequence chart showing an example of a transfer operation. This operation is started, for example, at predetermined time intervals. In step S11, the smoke detection unit 104 of each slave-type smoke sensor 100 measures the concentration of ambient smoke. In step S12, the determination unit 111 of each slave-type smoke sensor 100 determines whether the measured smoke concentration in step S11 corresponds to any one of a plurality of alarm levels.

[0040] For each slave-type smoke sensor 100, a first threshold value, a second threshold value, and a third threshold value are preset to determine three levels of alarm levels: "Alarm 1", "Alarm 2", and "Alarm 3". The first threshold value, the second threshold value, and the third threshold value are transmitted from the smoke alarm panel 200 to each slave-type smoke sensor 100 in advance and stored in the storage unit 102 of each slave-type smoke sensor 100. The first threshold value, the second threshold value, and the third threshold value are set, for example, within a range of 0.01% / m to 20.0% / m. The first threshold value is the smallest among the three threshold values. The second threshold value is larger than the first threshold value and smaller than the third threshold value. The third threshold value is the largest among the three threshold values.

[0041] The determination unit 111 determines the alarm level by comparing the smoke concentration measured by the smoke detection unit 104 with the first threshold value, the second threshold value, and the third threshold value. For example, when the smoke concentration is less than or equal to the first threshold value, the determination unit 111 determines that it does not correspond to any of the alarm levels from "Alarm 1" to "Alarm 3". When the smoke concentration is greater than the first threshold value and less than or equal to the second threshold value, the determination unit 111 determines that it corresponds to the alarm level of "Alarm 1". When the smoke concentration is greater than the second threshold value and less than or equal to the third threshold value, the determination unit 111 determines that it corresponds to the alarm level of "Alarm 2". When the smoke concentration is greater than the third threshold value, the determination unit 111 determines that it corresponds to the alarm level of "Alarm 3". When it is determined that it corresponds to any one of the alarm levels from "Alarm 1" to "Alarm 3", an alarm of the corresponding alarm level is generated.

[0042] In step S13, the transmitter 112 transmits the smoke concentration measured in step S11. This smoke concentration is an analog value. Further, when it is determined in step S12 that it corresponds to any one of the alarm levels of "Alarm 1" to "Alarm 3", the transmitter 112 transmits alarm information indicating the corresponding alarm level together with the smoke concentration.

[0043] In step S14, when the acquisition unit 212 of the smoke alarm panel 200 receives this information, the transfer control unit 213 refers to the transfer database 221 stored in the storage unit 202 and determines whether or not a transfer trigger assigned to the contact 262 has occurred.

[0044] For example, when the information received from the slave smoke sensor 100 does not include alarm information, it means that it does not correspond to any of the multiple alarm levels, and since the transfer trigger assigned to the contact 262 has not occurred (the determination in step S14 is NO), this process ends.

[0045] On the other hand, for example, when the information received from the slave smoke sensor 100 includes alarm information and the alarm level indicated by this alarm information is assigned to at least one of the contacts 262, since a transfer trigger has occurred (the determination in step S14 is YES), the process proceeds to step S15.

[0046] In step S15, the transfer control unit 213 of the smoke alarm panel 200 activates the relay 260 including the contact 262 to which the generated transfer trigger is assigned. As a result, the connection state of the contact 262 included in this relay 260 is switched.

[0047] In step S16, the transfer circuit 206 of the smoke alarm panel 200 outputs a contact signal to the transfer destination to which this contact 262 is connected. When the transfer destination receives this contact signal, it performs a predetermined process. This predetermined process includes, for example, output of sound, light emission, operation, control of other devices, alarm display, or a combination of at least two of these.

[0048] In one example, assume that alarm information indicating an alarm level of "Alarm 1" is received from a certain slave smoke sensor 100 in step S13. In the transfer database 221 shown in FIG. 5, the alarm level of "Alarm 1" is assigned to the default contact 262A. In this case, the transfer control unit 213 supplies a signal for operating the relay 260A to the transfer circuit 206. Due to this signal, current flows through the coil 261A included in the relay 260A. When current flows through the coil 261A, the second terminal 264A of the default contact 262A closes, and both ends of the second terminal 264A become conductive. As a result, a first contact signal is transmitted to the first transfer destination connected to the second terminal 264A. This first contact signal indicates that an alarm of the alarm level of "Alarm 1" has occurred.

[0049] In another example, assume that alarm information indicating an alarm level of "Alarm 2" is received from a certain slave smoke sensor 100 in step S13. In the transfer database 221 shown in FIG. 5, the alarm level of "Alarm 2" is assigned to the optional contact 262D. In this case, the transfer control unit 213 supplies a signal for operating the relay 260D to the transfer circuit 206. Due to this signal, current flows through the coil 261D included in the relay 260D. When current flows through the coil 261D, the second terminal 264D of the optional contact 262D closes, and both ends of the second terminal 264D become conductive. As a result, a second contact signal is transmitted to the first transfer destination connected to the second terminal 264D. This second contact signal indicates that an alarm of the alarm level of "Alarm 2" has occurred.

[0050] In yet another example, assume that in step S13, alarm information indicating an alarm level of "Alarm 3" is received from a slave smoke sensor 100. In the transfer information database 221 shown in FIG. 5, the alarm level of "Alarm 3" is assigned to the fixed contact 262B and the optional contact 262E. In this case, the transfer control unit 213 supplies a signal for operating the relay 260B and a signal for operating the relay 260E to the transfer circuit 206. When these signals are supplied, current flows through the coil 261B included in the relay 260B and the coil 261E included in the relay 260E, respectively. When current flows through the coil 261B, the second terminal 264B of the fixed contact 262B closes, and both ends of the second terminal 264B become conductive. As a result, a third contact signal is transmitted to the first transfer destination connected to the second terminal 264B. Also, when current flows through the coil 261E, the second terminal 264E of the optional contact 262E closes, and both ends of the second terminal 264E become conductive. As a result, a third contact signal is transmitted to the second transfer destination connected to the second terminal 264E. This third contact signal indicates that an alarm of the alarm level of "Alarm 3" has occurred.

[0051] These contact signals are continuously output unless the smoke concentration decreases and no longer corresponds to the corresponding alarm level, or a recovery operation is not performed. Therefore, when alarm information indicating an alarm level of "Alarm 2" is received, both the first contact signal and the second contact signal are output to the first transfer destination. Also, when alarm information indicating an alarm level of "Alarm 3" is received, the first contact signal, the second contact signal, and the third contact signal are all output to the first transfer destination, and the third contact signal is output to the second transfer destination.

[0052] Note that even when an abnormal signal is issued from the slave smoke sensor 100 or the smoke alarm panel 200, similarly, the relay 260C including the fixed contact 262C to which the abnormal signal is assigned is operated, and a contact signal is output to the first transfer destination.

[0053] According to the embodiments described above, since the alarm level selected by the general user can be assigned to the optional contacts 262D and 262E, when the smoke concentration measured by the slave smoke sensor 100 reaches the user's desired alarm level, this information can be transmitted to the transfer destination. In addition, since the alarm level "Alarm 3" assigned to the default contact 262B is included in the candidates for the trigger of the transfer report, by assigning this alarm level to the optional contact 262E and connecting the default contact 262B and the optional contact 262E to different transfer destinations, when the smoke concentration measured by the slave smoke sensor 100 reaches this alarm level, this information can be transmitted to a plurality of transfer destinations.

[0054] Modification Example The present invention is not limited to the embodiments described above. The above-described embodiments may be modified and implemented as follows. The embodiments and the modification examples may be used in combination, or may be switched and used during execution. Similarly, the following modification examples may be used in combination, or may be switched and used during execution.

[0055] Modification Example 1 In the above-described embodiment, the smoke monitoring system 10 may include an independent smoke sensor 400 instead of, or together with, the slave smoke sensor 100 and the smoke alarm panel 200.

[0056] FIG. 7 is a diagram showing an example of the configuration of the independent smoke sensor 400 according to this modification example. The independent smoke sensor 400 includes a control unit 401, a storage unit 402, a communication unit 403, an operation unit 404, a display unit 405, a transfer report circuit 406, and a smoke detection unit 407. Each part of the independent smoke sensor 400 is connected via a bus.

[0057] The control unit 401, the memory unit 402, and the smoke detection unit 407 are basically the same as the control unit 101, the memory unit 102, and the smoke detection unit 104 shown in FIG. 2. However, the memory unit 402 stores a program for realizing the functions of the independent smoke sensor 400 and a transfer information database 421 similar to the transfer information database 221 shown in FIG. 5. The smoke detection unit 104 is an example of the "measurement unit" according to the present invention.

[0058] The operation unit 404, the display unit 405, and the transfer information circuit 406 are the same as the operation unit 204, the display unit 205, and the transfer information circuit 206 shown in FIG. 3, respectively. The communication unit 403 is a communication interface for connecting the own device to a signal line different from the signal line 300. The communication unit 403 is used to communicate with other devices connected via this signal line.

[0059] The control unit 401 functions as an allocation unit 411, a determination unit 412, and a transfer information control unit 413. These functions are realized by the control unit 401 executing a program stored in the memory unit 402, causing the control unit 401 to perform calculations or control each part of the independent smoke sensor 400.

[0060] The allocation unit 411, similar to the allocation unit 211 shown in FIG. 3, allocates the opportunity for transfer of information selected by a general user from among the candidates for the opportunity for transfer of information to an arbitrary contact included in the transfer information circuit 406. The candidates for the opportunity for transfer of information include, as in the above-described embodiment, for example, an alarm level of "Alarm 1", an alarm level of "Alarm 2", an alarm level of "Alarm 3", and an abnormal signal. Further, to the three predetermined contacts included in the transfer information circuit 406, similar to the predetermined contacts 262A to 262C described above, an alarm level of, for example, "Alarm 1", an alarm level of "Alarm 3", and an abnormal signal are respectively pre-allocated. That is, the candidates for the opportunity for transfer of information include the alarm levels allocated to the predetermined contacts. Therefore, as in the above-described embodiment, for example, by allocating an alarm level of "Alarm 3" to an arbitrary contact and connecting the predetermined contact and the arbitrary contact to which the alarm level of "Alarm 3" is allocated to different transfer destinations, when an alarm of the alarm level of "Alarm 3" occurs, this information can be transmitted to a plurality of transfer destinations.

[0061] The determination unit 412, similar to the determination unit 111 shown in FIG. 2, determines whether or not it corresponds to any of a plurality of alarm levels according to the concentration of smoke measured by the smoke detection unit 407. Similar to the slave type smoke sensor 100, for the independent type smoke sensor 400 as well, a first threshold value, a second threshold value, and a third threshold value are preset and stored in the storage unit 402 in order to determine three levels of alarm levels of "Alarm 1", "Alarm 2", and "Alarm 3". The determination unit 412 determines the alarm level by comparing the concentration of smoke measured by the smoke detection unit 407 with the first threshold value, the second threshold value, and the third threshold value.

[0062] The transfer control unit 413, similar to the transfer control unit 213 shown in FIG. 3, when an opportunity for transfer of information allocated to a contact included in the transfer information circuit 406 occurs, switches the connection state of the contact and controls the transfer information circuit 406 to output a contact signal to the transfer destination to which this contact is connected.

[0063] According to this modification example, when the smoke concentration measured by the independent smoke sensor 400 reaches the user's desired alarm level, this information can be transmitted from the independent smoke sensor 400 to the transfer destination.

[0064] Modification Example 2 In the above-described embodiment, the configuration of the transfer circuit 206 is not limited to the example shown in FIG. 4. For example, the contact 262 of the relay 260 is not limited to the c contact shown in FIG. 4, and may be an a contact or a b contact. Further, the relay 260 is not limited to the contact relay shown in FIG. 4, and may be a non-contact relay. Furthermore, the number of fixed contacts included in the transfer circuit 206 is not limited to three. The number of fixed contacts may be less than three or more than three. Similarly, the number of optional contacts included in the transfer circuit 206 is not limited to two. The number of optional contacts may be less than two or more than two.

[0065] Modification Example 3 In the above-described embodiment, the transfer destination to which the contact 262 is connected is not limited to the example shown in FIG. 4. For example, the fixed contacts 262A to 262C and the optional contact 262D may be connected to different transfer destinations, respectively. Also, the contact 262 and the transfer destination may be connected by wire or wirelessly.

[0066] Modification Example 4 In the above-described embodiment, the number of levels of the alarm level is not limited to three. The number of levels of the alarm level may be two or four or more.

[0067] Modification Example 5 In the above-described embodiments, the configuration of the smoke monitoring system 10 is not limited to the above-described examples. The smoke monitoring system 10 may be configured to include one or more of the above-described devices, or may be configured without including some of the devices. Further, the subject having the function of the smoke monitoring system 10 is not limited to the above-described examples. For example, instead of the slave-type smoke sensor 100, the smoke alarm panel 200 may have the determination unit 111. In this case, the slave-type smoke sensor 100 transmits the smoke concentration measured by the smoke detection unit 104 to the smoke alarm panel 200. The smoke alarm panel 200 determines whether the received smoke concentration from the slave-type smoke sensor 100 corresponds to any of a plurality of alarm levels.

[0068] Modification Example 6 In the above-described embodiments, the operation of the smoke monitoring system 10 is not limited to the above-described examples. The processing procedure of the smoke monitoring system 10 may be rearranged as long as there is no contradiction. Also, some of the processing procedures of the smoke monitoring system 10 may be omitted.

[0069] Modification Example 7 Another aspect of the present invention may provide a method having steps of processing performed in at least any one of the smoke monitoring system 10, the slave-type smoke sensor 100, the smoke alarm panel 200, and the independent-type smoke sensor 400. Further, still another aspect of the present invention may provide a program executed in the slave-type smoke sensor 100, the smoke alarm panel 200, or the independent-type smoke sensor 400. This program may be provided by being stored in a computer-readable recording medium, or may be provided by being downloaded via the Internet or the like.

Description of Reference Numerals

[0070] 10: Smoke monitoring system, 100: Slave-type smoke sensor, 111: Determination unit, 112: Transmission unit, 200: Smoke alarm panel, 206: Transfer circuit, 211: Allocation unit, 212: Acquisition unit, 213: Transfer control unit, 260: Relay, 261: Coil, 262: Contact, 400: Independent-type smoke sensor, 406: Transfer circuit, 411: Allocation unit, 412: Determination unit, 413: Transfer control unit

Claims

1. A transfer reporting circuit having contacts connected to transfer destinations, an assignment unit that assigns an alarm level selected by a user from a plurality of alarm levels to the contacts, an acquisition unit that acquires an alarm level corresponding to the density of smoke measured by a smoke sensor, and a transfer control unit that controls the transfer reporting circuit to switch the connection state of the contacts and output a signal to the transfer destination when the alarm level assigned to the contacts is acquired by the acquisition unit and includes the transfer reporting circuit has a first contact and a second contact connected to different transfer destinations, a first alarm level included in the plurality of alarm levels is pre-assigned to the first contact, and any one of the alarm levels of the plurality of alarm levels is assigned to the second contact by the assignment unit Smoke alarm panel.

2. The first alarm level is assigned to the second contact by the assignment unit The smoke alarm panel according to Claim 1.

3. A transfer reporting circuit having contacts connected to transfer destinations, an assignment unit that assigns an alarm level selected by a user from a plurality of alarm levels to the contacts, a measurement unit that measures the density of surrounding smoke, a determination unit that determines an alarm level corresponding to the density of the smoke, and a transfer control unit that controls the transfer reporting circuit to switch the connection state of the contacts and output a signal to the transfer destination when the alarm level assigned to the contacts is determined by the determination unit and includes the transfer reporting circuit has a first contact and a second contact connected to different transfer destinations, a first alarm level included in the plurality of alarm levels is pre-assigned to the first contact, and any one of the alarm levels of the plurality of alarm levels is assigned to the second contact by the assignment unit Smoke sensor.

4. The first alarm level is assigned to the second contact by the assignment unit The smoke sensor according to Claim 3.

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