JP7229121B2 - Fire alarm equipment and renewal method of fire alarm equipment - Google Patents

Description

The present invention relates to a renewal technique for distributed fire alarm equipment.

A main repeater that monitors and controls multiple terminal devices connected via signal lines, and a fire receiver that is connected to this main repeater via transmission lines and transmits and receives monitoring information to and from the main repeater. and distributed fire alarm equipment is known (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2009-15403

Distributed fire alarm equipment such as that exemplified in Patent Document 1 is used for monitoring large-scale properties such as airports or commercial facilities, which are composed of multiple buildings. As time passes, it becomes necessary to replace the active main repeater and fire receiver that constitute the fire alarm system with new equipment. Here, the replacement of old equipment with new equipment is also called renewal.

Renewal of equipment requires a lot of work such as wiring work, equipment installation, equipment removal, equipment setting, equipment operation confirmation, etc. It is difficult to carry out these operations due to the comings and goings of people. Therefore, the timing at which the equipment can be renewed is generally during a time period when there are few people coming and going, such as at night. In this way, if the renewal is performed using a limited time period, the renewal of the entire facility cannot be performed at once, so partial renewal will be repeated. In addition, there is a demand from owners of large-scale properties that they would like to renew facilities at different times in order to spread the costs, since refurbishing facilities is costly. Against this backdrop, renewals are generally carried out in stages. If the renewal is to be carried out in stages, it may take years from the start of the renewal to its completion.

However, since the large-scale property to be monitored by the fire alarm equipment continues to operate, the fire alarm equipment needs to maintain the monitoring state even during the renovation.

Therefore, there has been a demand for a technology that can partially renew equipment while maintaining a monitoring state over the period from the start to the completion of renewal.

The present invention is based on the above problems, and provides a fire alarm system and a fire alarm system renewal method for gradually renewing a distributed fire alarm system while maintaining a monitoring state. It provides.

A fire alarm system according to the present invention is under renewal, comprising an old fire receiver , an old main relay connected to the old fire receiver, and a new main relay connected to the old fire receiver. comprising an updating unit that converts between the old transmission protocol of the old main repeater and the new transmission protocol of the new main repeater, wherein the updating unit converts the old transmission For converting a protocol to the new transmission protocol, supplementing the old transmission protocol with data corresponding to new functions and connectable equipment, and converting the new transmission protocol to the old transmission protocol; Among the new transmission protocols, those that do not exist in the old transmission protocol are discarded .
A fire alarm system according to the present invention is under renewal, comprising an old fire receiver, an old main relay connected to the old fire receiver, and a new main relay connected to the old fire receiver. comprising an updating unit that converts between the old transmission protocol of the old main relay and the new transmission protocol of the new main relay, wherein the updating unit receives the old fire interposed between the machine and the new main repeater, converts between the old transmission protocol and the new transmission protocol, and uses the old interlocking data used in the old main repeater and the new main repeater performing conversion with the new interlocking data, and supplementing the old interlocking data with data corresponding to new functions and connectable equipment in order to convert the old interlocking data into the new interlocking data; In order to convert the new interlocked data into the old interlocked data, the new interlocked data that is not in the old interlocked data is discarded.
A method for renewing a fire alarm system according to the present invention is a new fire alarm system in which a new fire receiver and a new main relay are connected from the old fire alarm system to which the old fire receiver and the old main relay are connected. A renewal method for renewing to , comprising: a first step of connecting the new main relay to the old fire receiver instead of the old main relay; and after the first step, connecting the old main relay. The new main repeater connected to the old fire receiver through an updating unit that converts or switches between the old transmission protocol and the new transmission protocol of the new main repeater , and the old fire receiver. a second step of transmitting and receiving monitoring information between; after the second step, a third step of connecting the new fire receiver to the new main repeater; and after the third step, the new main A signal transmitted from the new main relay to the new fire receiver by the repeater performing periodic monitoring with the new fire receiver, and by the update unit or the new main relay during the periodic monitoring Separately from, a fourth step of transmitting a steady signal to the old fire receiver, and a fifth step of removing the old fire receiver after the fourth step.

According to the present invention, in a state where the old fire alarm equipment to which the old fire receiver and the old main relay are connected and the new main relay are mixed, while maintaining the monitoring of the monitoring target, the equipment can be renewed step by step.

4 is a diagram illustrating the fire alarm system under renewal according to the first embodiment; FIG. FIG. 4 is a diagram for explaining a renewal procedure according to the first embodiment; FIG. FIG. 3 is a diagram illustrating a renewal procedure according to Embodiment 1 executed after the procedure of FIG. 2; FIG. It is a figure explaining the modification of the fire alarm equipment under renewal which concerns on Embodiment 1. FIG. FIG. 10 is a diagram illustrating a fire alarm system under renewal according to Embodiment 2; FIG. 11 is a diagram for explaining a renewal procedure according to the second embodiment; FIG. It is a figure explaining the fire alarm equipment under renewal which concerns on Embodiment 3. FIG. FIG. 12 is a diagram for explaining a renewal procedure according to the third embodiment; FIG. FIG. 10 is a diagram illustrating a renewal procedure according to the third embodiment, which is executed after the procedure of FIG. 8;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the fire alarm equipment, fire receiver, and main repeater before renewal are referred to as old fire alarm equipment, old fire receiver, and old main repeater, respectively. Also, the fire alarm equipment, fire receiver, and main repeater after renewal are referred to as new fire alarm equipment, new fire receiver, and new main repeater, respectively. Also, the transmission protocol used in the old fire alarm equipment is called the old transmission protocol, and the transmission protocol used in the new fire alarm equipment is called the new transmission protocol. The present invention is not limited to the following embodiments, and various modifications can be made without departing from the gist of the present invention. Moreover, the present invention includes all possible combinations of the configurations shown in the following embodiments. Moreover, the apparatus shown in the drawings is an example of the apparatus of the present invention, and the apparatus of the present invention is not limited by the apparatus shown in the drawings. Also, in each figure, the same reference numerals denote the same or corresponding parts, which are common throughout the specification.

Embodiment 1.
[Configuration of fire alarm system under renewal]
FIG. 1 is a diagram illustrating a fire alarm system under renewal according to Embodiment 1. FIG. The fire alarm system under renewal is a facility in which the old fire alarm system having the old fire receiver 10 and the old main repeater 20 and the new main repeater 40 are mixed.

First, the old fire alarm equipment will be explained. The old fire alarm system is configured by connecting an old fire receiver 10 to one or a plurality of old main repeaters 20 via a transmission line 4 . Terminal devices are connected to the old fire receiver 10 and the old main repeater 20 via signal lines 3, respectively. Terminal devices illustrated in FIG. 1 are a fire sensor 1 and a buzzer 2 . Terminal equipment may include alarm devices such as bells or lights, smoke control devices such as fire doors or shutters, or fire extinguishing equipment.

The old fire receiver 10 and the old main relay 20 monitor abnormalities such as fires in the monitoring area based on information collected from the connected terminal devices. When detecting an abnormality, the old fire receiver 10 and the old main relay 20 output abnormality detection information to the transmission line 4 . The abnormality detection information output to the transmission line 4 is acquired by the old fire receiver 10 and the old main repeater 20 other than the information output source. The old fire receiver 10 and the old main repeater 20 other than the information output source, which have acquired the information of the abnormality detection, are connected to the alarm device and the smoke prevention and exhaust device based on the interlocking data stored in advance. , or operate terminal equipment such as fire extinguishing equipment to issue an alarm or extinguish a fire.

The old fire receiver 10 has a control section 11 , a transmission circuit 12 and a terminal communication circuit 13 . The transmission circuit 12 is a circuit that transmits and receives signals to and from the old main repeater 20 using the old transmission protocol. The terminal communication circuit 13 is a circuit that performs signal transmission with terminal devices such as the fire sensor 1 and the buzzer 2 via the signal line 3 . The terminal communication circuit 13 transmits a command signal for collecting information to the terminal device, and receives a signal transmitted from the terminal device in response to this command signal. The transmission/reception operations of the transmission circuit 12 and the terminal communication circuit 13 are controlled by the controller 11 .

When the control unit 11 detects an abnormality based on the information collected from the terminal device, the control unit 11 controls a notification device such as a buzzer or light connected to the device, and a fire door or shutter connected to the device based on the interlocking data stored in advance. It controls the terminal communication circuit 13 and transmits a signal to operate terminal equipment such as a smoke device or fire extinguishing equipment. Further, when an abnormality such as a fire is detected, the control unit 11 controls the transmission circuit 12 to interlock the terminal devices connected to the old main repeater 20 based on pre-stored interlocking data. Send an interlock signal. Further, when receiving an interlocking signal from the old main repeater 20 that has detected an abnormality such as a fire, the control unit 11 operates the terminal device connected to itself based on prestored interlocking data.

The old fire receiver 10 has a regular monitoring function of periodically acquiring information from the old main repeater 20 connected to the old fire alarm equipment. In this periodical monitoring, the old fire receiver 10 sends a request signal to the old main repeater 20 requesting transmission of monitoring information. When a plurality of old main repeaters 20 are connected to the transmission line 4 , request signals are transmitted to each of the old main repeaters 20 in sequence without duplication. Upon receiving the request signal, the old main repeater 20 transmits information on the terminal device connected to itself and information on itself as a response signal. The old main repeater 20 transmits a steady signal as a response signal if there is no abnormality, and transmits an abnormal signal as a response signal if there is an abnormality. Upon receiving the response signal, the old fire receiver 10 notifies visually or audibly that an abnormality has occurred if the response signal is an abnormal signal, and terminates regular monitoring if the response signal is a steady signal. Also, the old fire receiver 10 judges that an abnormality has occurred and notifies that an abnormality has occurred even when a response signal cannot be received within a predetermined time after transmitting a request signal for regular monitoring. The old fire receiver 10 has a display and can display information from the old main repeater 20 connected to the old fire alarm equipment.

The old main repeater 20 has a control section 21 , a transmission circuit 22 and a terminal communication circuit 23 . Basic functions related to interlocking of the control unit 21, the transmission circuit 22 and the terminal communication circuit 23 are the same as those of the control unit 11, the transmission circuit 12 and the terminal communication circuit 13 of the old fire receiver 10, respectively. The old main repeater 20 differs from the old fire receiver 10 in that it does not have a display.

Next, the new fire alarm equipment will be explained. The new fire alarm system is configured by connecting one or a plurality of new main repeaters 40 to a new fire receiver 30 via transmission lines 4 . The new fire receiver 30 is not illustrated in FIG. 1 showing the fire alarm system under renewal, but the new fire receiver 30 is illustrated in FIG. 3 described later. Terminal devices are connected to the new fire receiver 30 and the new main repeater 40 via signal lines 3, respectively. During renewal, an update section 50 is interposed between the new main repeater 40 and the transmission line 4 . That is, the new main repeater 40 is connected to the transmission line 4 via the updating section 50 .

The basic functions of the new fire receiver 30 are the same as the old fire receiver 10 . The new fire receiver 30 has a configuration corresponding to the control unit 11, the transmission circuit 12, and the terminal communication circuit 13 of the old fire receiver 10. FIG.

The new main repeater 40 has a control section 41 , a transmission circuit 42 and a terminal communication circuit 43 . The basic functions of the control section 41, transmission circuit 42 and terminal communication circuit 43 are the same as those of the control section 21, transmission circuit 22 and terminal communication circuit 23 of the old main repeater 20, respectively.

The control units 11, 21, and 41 each include a CPU (Central Processing Unit), a memory, and an input/output port, and each function is realized by the CPU executing a program stored in the memory. Note that the control units 11, 21, and 41 may be configured by dedicated hardware circuits.

The update unit 50 performs protocol conversion between the old transmission protocol used in transmission via the transmission line 4 in the old fire alarm equipment and the new transmission protocol used in transmission via the transmission line 4 in the new fire alarm equipment. I do. The update unit 50 has, for example, a table in which the old transmission protocol and the new transmission protocol are associated with each other, converts the input old transmission protocol to the new transmission protocol, outputs the new transmission protocol, and converts the input new transmission protocol to the new transmission protocol. is converted to the old transmission protocol and output. The updating unit 50 also performs data conversion between the old interlocked data used in the old fire alarm equipment and the new interlocked data used in the new fire alarm equipment. The updating unit 50 has, for example, a table in which old interlocked data and new interlocked data are associated with each other, converts the input old interlocked data into new interlocked data, outputs the new interlocked data, and updates the input new interlocked data. is converted to the old linked data and output. The updating unit 50 includes a CPU (Central Processing Unit), a memory, and an input/output port, and each function is realized by the CPU executing a program stored in the memory. The update unit 50 may be configured with a dedicated hardware circuit. The table in which the old transmission protocol and the new transmission protocol are associated and the table in which the old interlocking data and the new interlocking data are associated are stored in the memory of the update unit 50 or a memory card that the update unit 50 can read. Stored in an external recording medium.

Here, the interlocking data is data in which the device of the interlocking source and the device of the interlocking destination are associated with each other. In the interlocking data, for example, information such as an address that uniquely identifies an interlocking source device is associated with information such as an address that uniquely identifies a interlocking device. The interlocking data may further include conditions under which the interlocking device operates. Interlocking in the fire alarm equipment is realized by the device of the interlocking destination performing a predetermined operation when a predetermined signal is output from the device of the interlocking source. The interlocking source device is, for example, a terminal device equipped with a sensor such as the fire sensor 1 . The interlocking device is, for example, a notification device such as a buzzer 2 or a light, a smoke prevention device such as a fire door or shutter, or a fire extinguishing device. Interlocking is performed between the terminal devices connected to the old fire receiver 10 and the old main repeater 20 in the old fire alarm system. In the new fire alarm system, communication is performed between the terminal devices connected to the new fire receiver 30 and the new main repeater 40, respectively. During the renewal, the terminal equipment connected to each of the old fire receiver 10, the old main repeater 20, the new fire receiver 30, and the new main repeater 40, which are connected to the transmission line 4 so as to be able to communicate with each other. Interlocking takes place between them.

In general, new fire alarm equipment has new functions and connectable equipment added to old fire alarm equipment. In that case, in order to convert the old transmission protocol and old interlocking data to the new transmission protocol and new interlocking data, a dummy corresponding to the new function and connectable equipment for the old transmission protocol and old interlocking data Data are added and supplemented. Further, in order to convert the new transmission protocol and new interlocking data into the old transmission protocol and old interlocking data, the new transmission protocol and new interlocking data that do not exist in the old transmission protocol and old interlocking data are discarded.

The updating unit 50 may be housed in the same housing as the new main repeater 40 or may be housed in a separate housing from the new main repeater 40 . Also, the updating unit 50 may be mounted on a circuit board that constitutes the new main repeater 40 or may be mounted on a circuit board that is different from the new main repeater 40 .

From the old fire alarm system in which the old fire receiver 10 and the old main repeater 20 are connected by the transmission line 4, to the new fire alarm system in which the new fire receiver 30 and the new main repeater 40 are connected by the transmission line 4 To, renewal will be carried out. During renewal, the new main repeater 40 is mixed with the old fire alarm equipment, and then the old fire receiver 10, the new main repeater 40 and the new fire receiver 30 are mixed. After that, it will switch to the new fire alarm system.

[Renewal procedure]
Hereinafter, the procedure for renewal from the old fire alarm system to the new fire alarm system will be described with reference to FIGS. 2 and 3. FIG. FIG. 2 is a diagram explaining a renewal procedure according to the first embodiment. FIG. 3 is a diagram for explaining the procedure of renewal according to the first embodiment, which is executed after the procedure of FIG. 2. In FIG. In FIGS. 2 and 3, the numbers in parentheses indicate the order of renewal steps. In the old fire alarm system shown in FIG. 2, one old fire receiver 10 and two old main repeaters 20 are connected via transmission lines 4 .

(1) First Step As shown in FIG. 2, a new main repeater 40 is connected in place of the old main repeater 20 in the old fire alarm system. More specifically, first, the old main repeater 20 is disconnected from the transmission line 4 . Subsequently, a new main repeater 40 is connected to the transmission line 4 . An updating unit 50 is connected between the new main repeater 40 and the transmission line 4 . The terminal equipment connected to the new main repeater 40 via the signal line 3 may be the same as that connected to the old main repeater 20, or may be a different terminal equipment.

(2) Second Step As shown in FIG. 2 , the new main repeater 40 connected to the transmission line 4 via the updating section 50 transmits and receives monitoring information to and from the old fire receiver 10 . Specifically, the new main repeater 40 transmits information collected from the terminal equipment to the old fire receiver 10 in the fire alarm system under renewal, receive.

Here, the old transmission protocol and the new transmission protocol originally used by the new main repeater 40 are different. Also, the old interlocking data and the new interlocking data originally used by the new main repeater 40 are different. The update unit 50 performs protocol conversion between different transmission protocols and data conversion between different linked data.

For example, assume that the fire sensor 1 connected to the new main relay 40 detects a fire and outputs a signal indicating the occurrence of the fire to the signal line 3 . The new main repeater 40, which has received this signal via the signal line 3, outputs a signal indicating the occurrence of fire. The signal output by the new main repeater 40 at this time is a signal conforming to the new transmission protocol. A signal output from the new main repeater 40 is input to the updating unit 50 . The update unit 50 converts the input signal conforming to the new transmission protocol into a signal conforming to the old transmission protocol, and outputs the converted signal. Then, a signal conforming to the old transmission protocol flows through the transmission line 4 and is received by the old fire receiver 10 . Since the old fire receiver 10 will receive the signal according to the old transmission protocol, it can perform normal operation as predetermined.

For example, assume that the time has come for the old fire receiver 10 to perform regular monitoring. The old fire receiver 10 outputs a request signal for periodic monitoring. The signal output by the old fire receiver 10 at this time is a signal conforming to the old transmission protocol. A signal output from the old fire receiver 10 is input to the updating unit 50 connected to the transmission line 4 . The updating unit 50 converts the input signal conforming to the old transmission protocol into a signal conforming to the new transmission protocol, and outputs the converted signal. Then, the new main repeater 40 receives a signal conforming to the new transmission protocol. Since the new main repeater 40 receives a signal conforming to the new transmission protocol, it can operate as predetermined. The periodic monitoring response signal output from the new main repeater 40 is converted by the updating unit 50 and received by the old fire receiver 10 .

Thus, in the second step, in a state where the new main repeater 40 is mixed with the old fire alarm equipment, signal transmission/reception and interlocking are performed between the old fire receiver 10 and the new main repeater 40. can be done.

When a plurality of old main repeaters 20 are connected to the old fire alarm equipment, each old main repeater 20 is replaced with a new main repeater 40 . The first and second steps are performed for the number of pieces of equipment to be replaced.

(3) Third Step As shown in FIG. 3, the new fire receiver 30 is connected to the fire alarm system under renewal. In the example of FIG. 3, all the old main repeaters 20 shown in FIG. 2 have been replaced with the new main repeaters 40. A new fire receiver 30 may be connected. Terminal devices such as the fire sensor 1 and the buzzer 2 are connected to the new fire receiver 30 . At this time, the terminal device connected to the old fire receiver 10 may be connected to the new fire receiver 30 , or the new terminal device may be connected to the new fire receiver 30 .

In this way, the fire alarm system under renewal in the state where the third step has been completed is in a state in which the old fire receiver 10, the new fire receiver 30, and the new main repeater 40 are connected to a single transmission line 4. Become. After the new fire receiver 30 starts operating, the new fire receiver 30 functions as the fire receiver of the fire alarm system under renewal. The new main repeater 40 connected to this fire alarm equipment is set to transmit to the new fire receiver 30 a signal regarding regular monitoring and interlocking based on the signal from the terminal device. Since transmission between the new fire receiver 30 and the new main repeater 40 is performed according to the new transmission protocol, the updating section 50 does not need to convert the transmission protocol. For this reason, the update unit 50 is set so as not to perform protocol conversion after the new fire receiver 30 is put into operation. The setting is performed by mechanical switches or electrical signals provided in the updating unit 50 .

By the way, the old fire receiver 10 is also connected to the fire alarm system under renewal. The new fire receiver 30 sends a periodic monitoring request signal to the new main repeater 40, and a response signal is sent from the new main repeater 40 to the new fire receiver 30. also sends a request signal for periodic monitoring. If the old fire receiver 10 does not receive the response signal from the new main repeater 40, it determines that there is an abnormal condition and issues a notification or the like. As described above, the degree of freedom in the timing of renewal work is low due to time constraints or cost constraints for renewal, and the period in which the old fire receiver 10 and the new fire receiver 30 coexist becomes longer. sometimes. Therefore, there is a demand to avoid unnecessary notifications from the old fire receiver 10 . Then, the following 4th process is performed.

(4) Fourth Step After the third step, the updating section 50 transmits a stationary signal for regular monitoring to the old fire receiver 10 . More specifically, upon receiving the periodic monitoring request signal transmitted from the old fire receiver 10 , the update unit 50 transmits a steady signal to the old fire receiver 10 . A stationary signal is a dummy signal that is transmitted regardless of the monitoring state of the new main repeater 40 . By transmitting such a dummy steady-state signal from the updating unit 50, it is possible to prevent the old fire receiver 10 from determining that an abnormality has occurred due to non-receipt of the response signal during regular monitoring. . In addition, the original periodical monitoring of the monitored area is performed between the new fire receiver 30 and the new main repeater 40, and the periodical monitoring is not interrupted. The process of transmitting the dummy stationary signal by the updating unit 50 is started by performing predetermined settings on the updating unit 50 . This setting is performed by a mechanical switch provided in the updating unit 50 or an electrical signal.

In this way, the update unit 50 transmits a steady signal to the old fire receiver 10, thereby avoiding unnecessary notification by the old fire receiver 10 being renewed, and monitoring by the new fire receiver 30. It can be carried out.

(5) Fifth Step After the fourth step, the old fire receiver 10 is removed from the transmission line 4 . Then, the equipment constituting the old fire alarm equipment disappears, and the fire alarm equipment whose renewal has been completed starts operating as the new fire alarm equipment. When the old fire receiver 10 is removed from the transmission line 4 , the updating unit 50 does not need to send dummy stationary signals to the old fire receiver 10 . Therefore, the updating unit 50 stops transmitting the stationary signal. The suspension of the stationary signal transmission process by the updating unit 50 is executed by performing a predetermined setting on the updating unit 50 . This setting is performed by a mechanical switch provided in the updating unit 50 or an electrical signal. In the new fire alarm equipment that has started operation, conversion of the transmission protocol and interlocking data is unnecessary, so the update unit 50 only mediates transmission between the transmission line 4 and the new main repeater 40. Become. Instead of setting the updating unit 50 to stop transmitting the stationary signal, the updating unit 50 may be removed from the transmission line 4 .

As described above, in the present embodiment, the old fire alarm equipment to which the old fire receiver 10 and the old main relay 20 are connected, and the new main relay 40 connected to the old fire receiver 10 are Explained the fire alarm equipment under renovation, which was mixed. The fire alarm system under renewal is provided with an updating unit 50 that converts between the old transmission protocol of the old fire alarm system and the new transmission protocol of the new main repeater 40 . For this reason, in a fire alarm system that is being replaced in stages and is undergoing renewal, even if facilities with different transmission protocols coexist, the monitoring state can be maintained.

Further, the updating unit 50 is interposed between the old fire receiver 10 and the new main repeater 40, converts between the old transmission protocol and the new transmission protocol, and converts the old interlocking data used in the old fire alarm equipment. and the new interlocking data used in the new main repeater 40 are converted. Therefore, in the fire alarm system under renewal, maintenance of monitoring and interlocking of terminal devices when an abnormality occurs are realized between the old fire receiver 10 and the new main repeater 40 .

FIG. 4 is a diagram illustrating a modification of the fire alarm system under renewal according to the first embodiment. In the fire alarm system under renewal shown in FIG. Alternatively, a plurality of new main repeaters 40 are connected. That is, a plurality of new main repeaters 40 connected to the transmission line 5 are connected to the transmission line 4 via the updating unit 50 . The configurations of the new main repeater 40 and the updating unit 50 are the same as those described in the first embodiment. is different. The present embodiment is also applied to fire alarm equipment having such a system configuration. In the modified example described above, the transmission line 4 and the transmission line 5 can be directly connected via the update unit 50 without the new main repeater 40 .

Embodiment 2.
FIG. 5 is a diagram for explaining the fire alarm system under renewal according to the second embodiment. In this embodiment, the same reference numerals are given to the same configurations as in the first embodiment, and the suffix A is added to the reference numerals to indicate different configurations. The following description focuses on differences from the first embodiment.

As shown in FIG. 5, the fire alarm system under renewal of the second embodiment differs from the first embodiment in the new main repeater 40A and its control section 41A, and the update section 50A. In the first embodiment, the updating unit 50 converts the transmission protocol and interlocking data, but in the present embodiment, the updating unit 50A converts the transmission protocol, and the new main repeater 40A converts the interlocking data. .

During renewal, the control unit 41A of the new main repeater 40A interlocks the terminal device connected to itself based on the old interlocking data used in the old fire alarm equipment. Specifically, the control unit 41A stores the old interlocked data in advance in addition to the new interlocked data. The old linked data may be stored in an external recording medium such as a memory card that can be read by the controller 41A. When the control unit 41A acquires the interlocking data transmitted from the old fire receiver 10 or the old main repeater 20 via the transmission line 4, the control unit 41A converts the old interlocking data into the new interlocking data, and converts the new interlocking data after the conversion. based on the terminal equipment. Further, when the control unit 41A acquires a signal indicating the occurrence of an abnormality from a terminal device connected to itself, the control unit 41A transmits the old interlock data. The conversion processing between the old linked data and the new linked data is the same as the conversion processing by the updating unit 50 of the first embodiment.

The updating unit 50A performs protocol conversion between the old transmission protocol and the new transmission protocol. The process of protocol conversion is as described in the first embodiment. Note that, unlike the update unit 50 of the first embodiment, the update unit 50A does not convert interlock data.

The renewal procedure in the present embodiment applies the same content to the first to third and fifth steps described in the first embodiment, but differs in the fourth step. The fourth step of this embodiment will be described below.

FIG. 6 is a diagram explaining a renewal procedure according to the second embodiment.

(4) Fourth Step The fourth step is executed while the new main repeater 40A, the old fire receiver 10, and the new fire receiver 30 are mixed in the fire alarm system under renewal. While the new fire receiver 30 performs periodic monitoring with the new main repeater 40A, the old fire receiver 10 also periodically outputs a periodic monitoring request signal. In this embodiment, the periodic monitoring request signal transmitted from the old fire receiver 10 is received by the new main repeater 40A via the updating unit 50A. The new main repeater 40A transmits a stationary signal to the old fire receiver 10 upon receiving the periodic monitoring request signal from the old fire receiver 10 . The stationary signal transmitted to the old fire receiver 10 is a dummy signal transmitted regardless of the monitoring state of the new main repeater 40A. By transmitting such a dummy steady-state signal from the new main repeater 40A, the old fire receiver 10 can avoid judging that an abnormality has occurred due to non-receipt of the response signal during regular monitoring. can be done. In addition, the original periodical monitoring of the monitored area is performed between the new fire receiver 30 and the new main repeater 40A, and the periodical monitoring is not interrupted. The process of transmitting a dummy stationary signal by the new main repeater 40A is started by performing predetermined settings on the control section 41A (see FIG. 5) of the new main repeater 40A. This setting is performed by a mechanical switch or an electrical signal provided in the new main repeater 40A.

In the present embodiment, as in the first embodiment, the monitoring state can be maintained even if equipment with different transmission protocols are mixed in the fire alarm equipment under renewal in which the equipment is being replaced in stages. can.

Embodiment 3.
[Configuration of fire alarm system under renewal]
FIG. 7 is a diagram illustrating a fire alarm system under renewal according to the third embodiment. In this embodiment, the same reference numerals are given to the same configurations as in the first embodiment, and the suffix B is added to the reference numerals to indicate different configurations. The following description focuses on differences from the first embodiment.

In this embodiment, the function of the updating unit 50 of the first embodiment or the updating unit 50A of the second embodiment is realized by the new main repeater 40B. That is, the new main repeater 40B functions as an updating unit. The new main repeater 40B includes a control section 41B, a transmission circuit 42, a terminal communication circuit 43, and an old transmission circuit 44B. The old transmission circuit 44B is a circuit that transmits and receives signals to and from the old fire receiver 10 and the old main repeater 20 using the old transmission protocol used in the transmission line 4 . In contrast to old transmission circuit 44B, transmission circuit 42 can be said to be a new transmission circuit that uses the new transmission protocol. The control unit 41B performs communication on the transmission line 4 using either the transmission circuit 42 using the new transmission protocol or the old transmission circuit 44B using the old transmission protocol. Which of the transmission circuit 42 and the old transmission circuit 44B is used is set by a mechanical switch provided in the new main repeater 40B or an electrical signal to the control section 41B.

In the fire alarm system under renewal shown in FIG. 7 of the present embodiment, the old fire receiver 10 functions as a fire receiver that monitors the monitoring area. Therefore, the new main repeater 40B under renewal uses the old transmission protocol to perform periodic monitoring and interlocking communication with the old fire receiver 10 . That is, during renewal, the transmission circuit 42 is not used, and the old transmission circuit 44B is used. The control unit 41B transmits and receives signals using the old transmission circuit 44B during renewal.

Further, the control unit 41B performs interlocking of the terminal devices using the old interlocking data when transmitting and receiving signals using the old transmission circuit 44B during renewal. Specifically, old interlocking data is stored in the memory of the control unit 41B or an external storage medium such as a memory card readable by the control unit 41B, and the control unit 41B uses this old interlocking data. When the renewed fire alarm system starts operating, the control unit 41B uses the new interlocking data stored in the memory of the control unit 41B or an external storage medium such as a memory card readable by the control unit 41B. In this way, the new main repeater 40B switches between the old interlocking data and the new interlocking data and uses the data for interlocking.

[Renewal procedure]
Hereinafter, the procedure for renewal from the old fire alarm system to the new fire alarm system will be described with reference to FIGS. 8 and 9. FIG. FIG. 8 is a diagram explaining a renewal procedure according to the third embodiment. FIG. 9 is a diagram for explaining the procedure of renewal according to the third embodiment, which is executed after the procedure of FIG. In FIGS. 8 and 9, the numbers in parentheses indicate the order of renewal steps. In the old fire alarm system shown in FIG. 8, one old fire receiver 10 and two old main repeaters 20 are connected via transmission lines 4 .

(1) First Step As shown in FIG. 8, a new main repeater 40B is connected instead of the old main repeater 20 in the old fire alarm system. More specifically, first, the old main repeater 20 is disconnected from the transmission line 4 . Subsequently, the new main repeater 40B is connected to the transmission line 4. At this time, the old transmission circuit 44B of the new main repeater 40B is communicatively connected to the transmission line 4, and the transmission circuit 42 is not communicatively connected to the transmission line 4. In addition to the state in which the transmission line 4 is not connected, the state of not being communicably connected includes the state in which the transmission line 4 is connected but the transmission circuit 42 does not perform communication due to setting. The terminal equipment connected to the new main repeater 40 via the signal line 3 may be the same as that connected to the old main repeater 20, or may be a different terminal equipment.

(2) Second Step As shown in FIG. 8, the new main repeater 40B connected to the transmission line 4 by the old transmission circuit 44B transmits and receives monitoring information to and from the old fire receiver 10. FIG. Specifically, the new main repeater 40B transmits the information collected from the terminal devices to the old fire receiver 10 in the fire alarm equipment under renewal, and receive. The old transmission circuit 44B uses the old transmission protocol used by the old fire receiver 10 to transmit and receive signals.

(3) Third Step As shown in FIG. 9, the new fire receiver 30 is connected to the fire alarm system under renewal. At this time, all of the old main repeaters 20 shown in FIG. 8 have been replaced with the new main repeaters 40B. may be connected. Terminal devices such as the fire sensor 1 and the buzzer 2 are connected to the new fire receiver 30 . At this time, the terminal device connected to the old fire receiver 10 may be connected to the new fire receiver 30 , or the new terminal device may be connected to the new fire receiver 30 .

In this way, the fire alarm system under renewal in the state where the third step is completed is in a state in which the old fire receiver 10, the new fire receiver 30, and the new main repeater 40B are connected to a single transmission line 4. Become. In this embodiment, even if the new fire receiver 30 is connected to the transmission line 4 , it does not start operating while the old fire receiver 10 is connected to the transmission line 4 . Therefore, the old fire receiver 10 functions as a fire receiver for the fire alarm system under renewal. Therefore, the transmission between the new main repeater 40B and the old fire receiver 10 is performed according to the old transmission protocol.

(4) Fourth Step After the third step, the new main repeater 40B transmits a stationary signal to the old fire receiver 10 for regular monitoring. More specifically, upon receiving the periodic monitoring request signal transmitted from the old fire receiver 10, the new main repeater 40B transmits a response signal to the old fire receiver 10 via the old transmission circuit 44B. do. The response signal is a signal that reflects the results of monitoring in the monitored area, and is a steady signal or an abnormal signal. In this way, periodic monitoring is continuously performed between the new main repeater 40B and the old fire receiver 10 during renewal.

Note that the same regular monitoring operation as in the fourth step is also performed before the third step, that is, before the new fire receiver 30 is connected to the transmission line 4 . Regardless of whether or not the new fire receiver 30 is connected, after the new main repeater 40B is connected to the fire alarm system being renewed, the new main repeater 40 will send a steady signal as a response signal to the periodic monitoring request signal. Send a signal or anomaly signal. In a state where the old main repeater 20 and the new main repeater 40B are mixed, the old fire receiver 10 performs periodic monitoring between the old main repeater 20 and the new main repeater 40B. .

(5) Fifth Step After the fourth step, the old fire receiver 10 is removed from the transmission line 4 . If it does so, the equipment which comprised the old fire alarm equipment will disappear.

(6) Sixth Step Subsequently, in the new main repeater 40B, communication using the old transmission circuit 44B is stopped and communication using the transmission circuit 42 is started. Specifically, the transmission circuit 42 is communicably connected to the transmission line 4 and the old transmission circuit 44B is disconnected from the transmission line 4 . Note that "disconnected" includes not only the state in which the transmission line 4 is not connected, but also the state in which the transmission line 4 is connected but the old transmission circuit 44B does not communicate due to setting.

When the renewal is completed in this way, the new fire receiver 30 starts operating, and monitoring of the monitoring area as the new fire alarm equipment is started.

As described above, in the present embodiment, the old fire alarm equipment to which the old fire receiver 10 and the old main relay 20 are connected, and the new main relay 40B connected to the old fire receiver 10 are Explained the fire alarm equipment under renovation, which was mixed. The new main repeater 40B of the fire alarm equipment under renewal uses either the transmission circuit 42 or the old transmission circuit 44B to achieve the old transmission protocol of the old fire alarm equipment and the new transmission protocol of the new fire alarm equipment. Protocol to switch the transmission protocol to use. That is, the new main repeater 40B realizes substantially the same function as the updating unit 50 in the first embodiment or the updating unit 50A in the second embodiment. For this reason, in a fire alarm system that is being replaced in stages and is undergoing renewal, even if facilities with different transmission protocols coexist, the monitoring state can be maintained.

The transmission line 4 described in Embodiments 1 to 3 above may be the same transmission line for the old fire alarm equipment, the fire alarm equipment under renewal, and the new fire alarm equipment. A new transmission line 4 may be laid in stages. Terminal devices such as the fire detector 1 and buzzer 2, and the signal line 3 may be the same as the old fire alarm equipment, the fire alarm equipment under renewal, and the new fire alarm equipment, or may be under renewal. can be gradually replaced with new equipment.
Further, the first to third embodiments can be combined as appropriate. For example, the second and third embodiments can be combined, the update unit 50 converts the transmission protocol, and the control unit 41B updates the old interlock data according to settings. You may make it interlock|cooperate a terminal device using.
Further, the periodical monitoring method is not limited to a method in which the fire receiver (hereinafter referred to as the old fire receiver 10 and the new fire receiver 30 when not distinguished) transmits a request signal, the so-called polling method, and various other methods. can do. For example, the fire receiver connected to the transmission line 4 and all the main repeaters (hereinafter referred to as the old main repeater 20 and the new main repeater 40 are referred to when not distinguishing between them) turn the information transmission right in order. , a so-called token-passing method in which a person with a transmission right transmits information. In this method as well, the fire receiver can determine that an abnormality has occurred in the main repeater that has not transmitted information within a predetermined period of time or has failed to confirm receipt in the transmission right transfer procedure.
Also, although interlocking data has been described as an example of data to be converted, other data are also converted if they differ between the old fire alarm equipment and the new fire alarm equipment.
Also, if the interlocking source device and the interlocking destination device are connected to different main relays, the fire receiver may relay the interlocking signal, and the interlocking destination main relay directly transmits the interlocking signal. You may make it receive.

1 fire detector, 2 buzzer, 3 signal line, 4 transmission line, 5 transmission line, 10 old fire receiver, 11 control unit, 12 transmission circuit, 13 terminal communication circuit, 20 old main repeater, 21 control unit, 22 Transmission circuit 23 Terminal communication circuit 30 New fire receiver 40 New main repeater 40A New main repeater 40B New main repeater 41 Control unit 41A Control unit 41B Control unit 42 Transmission circuit 43 Terminal Communication circuit, 44B old transmission circuit, 50 update section, 50A update section.

Claims (3)

old fire receiver and
an old main repeater connected to the old fire receiver ;
A fire alarm facility under renewal comprising a new main repeater connected to the old fire receiver,
An updating unit that converts between the old transmission protocol of the old main repeater and the new transmission protocol of the new main repeater ,
The update unit supplements the old transmission protocol with data corresponding to new functions and connectable equipment to convert the old transmission protocol to the new transmission protocol, and converts the new transmission protocol to the old transmission protocol. discarding those of the new transmission protocol that are not in the old transmission protocol to convert to the transmission protocol
Fire alarm equipment. old fire receiver and
an old main repeater connected to the old fire receiver;
A fire alarm facility under renewal comprising a new main repeater connected to the old fire receiver,
An updating unit that converts between the old transmission protocol of the old main repeater and the new transmission protocol of the new main repeater,
The updating unit
interposed between the old fire receiver and the new main repeater, converts between the old transmission protocol and the new transmission protocol, and converts the old interlocking data used in the old main repeater to the new main repeater; Convert between the new interlocking data used in the repeater ,
In order to convert the old interlock data into the new interlock data, the old interlock data is supplemented with data corresponding to new functions and connectable equipment, and the new interlock data is converted into the old interlock data. Therefore, the new interlocked data that is not in the old interlocked data is discarded.
Fire alarm equipment. A renewal method for renewing an old fire alarm system in which an old fire receiver and an old main relay are connected to a new fire alarm system in which a new fire receiver and a new main relay are connected,
a first step of connecting the new main repeater to the old fire receiver instead of the old main repeater;
After the first step, connected to the old fire receiver via an updating unit that converts or switches between the old transmission protocol of the old main repeater and the new transmission protocol of the new main repeater. a second step in which the new main relay transmits and receives monitoring information to and from the old fire receiver;
a third step of connecting the new fire receiver to the new main repeater after the second step;
After the third step, the new main repeater performs periodic monitoring with the new fire receiver, and the update unit or the new main repeater receives the new main repeater from the new main repeater in the periodic monitoring. a fourth step of transmitting a stationary signal to the old fire receiver separately from the signal transmitted to the new fire receiver;
A method for renewing a fire alarm system, comprising: a fifth step of removing the old fire receiver after the fourth step.

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