JP2008242648A - Transmission conversion replay - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily select operation processing content to be performed by a transmission conversion relay for every job site according to the circumstances of the job sites in the case of using a transmission conversion relay at a division renewal construction for changing an old type facility to a new type facility step by step. <P>SOLUTION: This transmission conversion relay is constituted so that during the division renewal of an old type fire alarm facility, an old type fire receiver is connected to the pre-stage, a plurality of new type terminal devices are connected to a transmission line so as to be connected to the post-stage, a signal is transmitted by the plurality of new type terminal devices and a second transmission system, a signal is transmitted by the old type fire receiver and a first transmission system, and the individual information of the plurality of new type terminal devices can be collected by the old type fire receiver. This transmission conversion relay is provided with a self-address setting means and a control means for performing different operation processing according to whether or not the self-address is set in the self-address setting means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a fire alarm system capable of monitoring a fire even in a new equipment part when only a part of the entire equipment is replaced with the new equipment when the old fire alarm equipment is renewed to the new fire alarm equipment.

  When multiple terminal devices such as fire detectors are connected to a fire receiver via a transmission line, a different address is assigned to each terminal device, and the terminal devices are individually assigned sequentially from the fire receiver based on that address. There is known a polling method (cyclic polling method) in which only the terminal device that is called and transmits individual information (normal, fire, etc.) related information about the terminal device to the fire receiver (for example, Patent Literature) 1).

  FIG. 9 is a time chart showing an example of a conventional cyclic polling method.

  In FIG. 9, the signal sent by the fire receiver is shown above the horizontal line, and the signal sent by the corresponding terminal device (fire detector, transmitter, etc.) is shown below the horizontal line.

  The fire receiver sequentially and cyclically designates the address AD individually, sends a command signal consisting of “AD / return command”, and this signal is received by the terminal device corresponding to the designated address AD.・ Return a return signal consisting of “individual information”, and the fire receiver will receive this signal to monitor the fire.

  This cyclic polling method is a method in which a fire receiver sequentially calls a large number of terminal devices and collects individual information such as the occurrence of a fire from each terminal device. In this cyclic polling method, each terminal device cannot transmit its own information to the fire receiver until it receives a call. The period for receiving this call becomes longer as the number of terminal devices connected to the transmission line increases.

  To shorten the period of receiving calls, divide a plurality of terminal devices on the transmission line into a plurality of groups, and when the fire receiver polls for each group and polls a predetermined group among the plurality of groups, Individual information from a plurality of terminal devices belonging to a group is continuously received in a time-sharing manner (point polling), and a control command such as a status information return command is transmitted to a specific terminal device as necessary (select ) And polling selecting system operations are performed (see, for example, Patent Document 2).

  FIG. 10 is a time chart showing an example of a conventional polling selecting method, and is a time chart showing an example of point polling.

  In FIG. 10, the signal sent by the fire receiver is shown above the horizontal line, and the signal sent by the corresponding terminal device (fire detector, transmitter, etc.) is shown below the horizontal line.

  “Point polling” is composed of a “group information collection frame” and a “transmitter detection frame”.

  The “group information collection frame” does not sequentially poll each terminal device (terminal device) one by one. For example, 208 terminal devices are grouped with 16 terminal devices as one group. This is a frame that is grouped into groups, and a command signal composed of “AD, CM1, CM2, and PS” is transmitted for each group, and is called by the fire receiver. Each terminal device belonging to the called group sends back individual information sequentially to the fire receiver by sending a return signal composed of “D1 · SS” at the response timing assigned to each terminal device.

  That is, in the polling selecting method (point polling), for example, 16 terminal devices (terminal devices) are set as one group, the number of groups is set according to the total number of terminal devices, and polling is performed for each group.

  The “transmitter detection frame” is a frame provided in addition to the “group information collection frame” and is a response frame dedicated to the transmitter, but may be deleted as necessary.

  For example, the cyclic polling method is used for old-type equipment, and the polling selecting method is used for new-type equipment.

  A transmission conversion repeater that can be renewed when an old system is renewed to a new system is known (for example, see Patent Document 3).

The transmission conversion repeater is a repeater that mediates information transmission by providing a signal conversion function between a fire receiver and a terminal device of different systems because the transmission methods of the old system and the new system are different.
JP-A-8-273082 JP 2002-175572 A JP 2003-248883 A

  The fire alarm equipment has a limited useful life, and it is necessary to change the equipment according to the useful life, but the monitoring state is not interrupted when the old equipment and the new equipment are replaced.

  Therefore, in the past, renewal installation work of new equipment has been performed while operating old equipment.

  However, if this is done, there is a problem that it is necessary to secure a new installation space for the new equipment, and there is a problem that it is difficult to make a budget because it is not possible to carry out the division work to gradually change to the new equipment. is there.

  In order to solve this problem, the transmission conversion relay as described above is used as a means for construction from the terminal while utilizing the old receiver, or as a means for construction from the receiver while utilizing the old terminal. It is conceivable to use a vessel.

  Split renewal is, for example, when an old receiver is used and construction is started from the terminal, the old terminal device is changed to the new terminal device, and the new terminal device is connected to the old fire receiver via the transmission conversion repeater. Connecting. Next, after changing the old fire receiver to the new fire receiver, as a final work, remove the transmission conversion repeater so that the new terminal equipment and the new fire receiver can directly transmit signals. Reconnect the wiring between the primary side and secondary side of the conversion repeater.

  By the way, as a request for a transmission conversion repeater, there are some sites where various functions are provided and a high-spec system is to be maintained even during split renewal, and there is a signal relay function between the old system and the new system equipment. Some sites require only the minimum necessary functions.

  In addition, when the transmission conversion repeater is configured to be supplied with power from the fire receiver, the amount of power supply that can be supplied to the transmission conversion repeater is limited depending on the changes in the system, such as an increase in the number of terminal devices. There is also a desire to select a function for each site in accordance with the amount of power supply that can be supplied.

  In other words, there is a demand that the operation processing content performed by the transmission conversion repeater can be easily selected for each site according to the situation at the site.

  In the fire alarm system, when the old equipment is changed to the new equipment step by step, the monitoring state is not interrupted, and when replacing the old equipment with the new equipment, a new installation space for the new equipment is secured. When the transmission conversion repeater is used for split renewal work that is not strict on budget, the operation processing content performed by the transmission conversion repeater can be easily selected for each site according to the situation at the site. An object of the present invention is to provide a transmission conversion repeater.

  In the present invention, a plurality of first terminal devices and a first fire receiver are connected via a transmission line, and a first transmission system is connected between the first fire receiver and the plurality of first terminal devices. The first fire alarm facility configured to collect the individual information of the plurality of first terminal devices by the first fire receiver is replaced with the plurality of second terminal devices instead of the plurality of first terminal devices. A terminal device, a second fire receiver instead of the first fire receiver, wherein the plurality of second terminal devices and the second fire receiver are connected via the transmission line; 2 The signal transmission by the second transmission method is performed between the fire receiver and the plurality of second terminal devices, and the individual information of the plurality of second terminal devices is collected by the second fire receiver. Used when renewing the second fire alarm facility, instead of a part of the plurality of first terminal devices. When the first fire alarm facility having the plurality of second terminal devices is divided and renewed, the first fire receiver is connected to the front stage, and the plurality of second terminal devices are connected to the rear stage. Connected to the transmission line to perform signal transmission with the plurality of second terminal devices by the second transmission method, to perform signal transmission with the first fire receiver and the first transmission method, and to The transmission conversion repeater configured to collect the individual information of the two terminal devices by the first fire receiver, or the first of the configuration in which the second fire receiver is provided instead of the first fire receiver. At the time of split renewal of the fire alarm facility, the second fire receiver is connected to the front stage, the plurality of first terminal devices are connected to the transmission line so as to be connected to the rear stage, and the plurality of first terminal devices are connected. And the first transmission method A transmission conversion repeater configured to perform transmission, perform signal transmission with the second fire receiver and the second transmission method, and collect the individual information of the plurality of first terminal devices by the second fire receiver And a self-address setting means and a control means for performing different operation processing depending on whether or not a self-address is set in the self-address setting means.

  According to the present invention, in the fire alarm facility, the monitoring state is not interrupted when the old facility is changed to the new facility step by step, and when the old facility is replaced with the new facility, the installation space for the new facility is renewed. If the transmission conversion repeater is used for split renewal work that is not strict in terms of budget, the self-address setting means and the self-address setting means are set in the transmission conversion repeater. Depending on whether or not there is a control means for performing different operation processing, the operation processing content performed by the transmission conversion repeater can be easily selected for each site according to the situation at the site.

  The best mode for carrying out the invention is the following examples.

  FIG. 1 is a block diagram showing a fire alarm system 100 including a transmission conversion repeater 10 that is Embodiment 1 of the present invention.

  The fire alarm system 100 includes a fire receiver RE1 (an example of an old fire receiver), a transmission conversion repeater 10, a first floor terminal group SE10 (an example of an old terminal device), and a second floor terminal group SE20 (new model). An example of a terminal device).

  In the fire alarm system 100, a plurality of old terminal devices and an old fire receiver RE1 are connected via a transmission line L1, and different addresses are assigned to the old terminal devices, respectively. Fire notification using a cyclic polling system in which the old terminal devices are individually and sequentially called, and only the called old terminal device transmits individual information regarding the old terminal device to the old fire receiver RE1. Equipment.

  In FIG. 1, as an example of the terminal group, the first-floor terminal group SE10 and the second-floor terminal group SE20 are representatively described, but more terminal groups may be provided. In the example shown in FIG. 1, when the fire alarm facility provided in the first to second floor buildings is divided and renewed, only the second-floor terminal group is currently replaced with the new-equipment terminal group. This is the stage where the change was made to SE20. For the first floor, there is still a terminal group SE10 for old equipment.

  That is, FIG. 1 shows an old fire alarm in which an old terminal device (first floor terminal group SE10 and the like) and an old fire receiver RE1 are connected via a transmission line L1 and cyclic polling signal transmission is used. It is a figure which shows the middle stage of the division renewal construction which changes old type terminal equipment into new type terminal equipment step by step in equipment, and in the second floor terminal group, new terminal equipment (second floor terminal group) It is a figure which shows that SE20) is provided. The new terminal device SE20 is connected to the secondary side of the transmission conversion repeater 10 via the branch line L2 (secondary transmission line L1), and the primary side of the transmission conversion repeater 10 is connected to the transmission line. The old fire receiver RE1 is connected via L1. Here, the cyclic polling method as the first transmission method is used for the old equipment, and the polling selecting method as the second transmission method is used for the new equipment. For this reason, the new terminal device SE20 cannot perform signal transmission with the old fire receiver RE1. Therefore, the transmission conversion repeater 10 collects information by performing signal transmission with the new terminal equipment SE20 by a polling selecting method used in the new equipment, and also by a cyclic polling method used in the old equipment. Then, signal transmission is performed with the old fire receiver RE1 to transmit information. As a result, the old fire receiver RE1 can collect the individual information of the new terminal device SE20.

  In particular, new terminal devices (terminal devices SE21, SE22, SE23 of the second-floor terminal group SE20) provided in place of the old terminal devices are individually assigned the addresses assigned to the removed old terminal devices, that is, In this fire alarm system 100, the addresses of the old terminal device and the new terminal device that have not been removed are individually set to be different from each other, and the old fire receiver RE is connected to the old terminal device by the cyclic polling method. By performing signal transmission with the terminal device and the transmission conversion repeater 10, the individual information of the new terminal device can be collected in the same manner as the old terminal device.

  After completing the work of changing the old terminal device on the first floor to the new terminal device in pairs with the transmission conversion repeater 10, the old fire receiver RE1 is changed to the new fire receiver, and each transmission conversion repeater 10 By connecting the transmission line L1 on the primary side and the branch line L2 on the secondary side, the split renewal work is completed, and the old facility can be renewed to the new facility. In other words, the new fire receiver and the new terminal device perform signal transmission using the polling selecting method, so that the new fire receiver collects the individual information of the new terminal device without having to reassign the entire address. be able to.

  That is, the transmission conversion repeater 10 can perform split renewal work in which the old equipment is gradually changed to the new equipment in the fire alarm equipment, and the old equipment is replaced with the new equipment without any interruption in the monitoring state. Sometimes it is not necessary to secure a new installation space for the new equipment, and the budget can be made strict.

  The terminal group may include a transmitter. Furthermore, controlled devices such as smoke prevention devices such as fire doors and fire dampers may be included in the terminal group.

  In the fire alarm system 100, a plurality of old terminal devices (first terminal devices) and an old fire receiver RE1 (first fire receiver) are connected via a transmission line L1, and the old fire receiver RE1 A configuration in which signal transmission is performed by the first transmission method (for example, cyclic polling method) with the plurality of old terminal devices, and the old fire receiver RE1 collects individual information of the plurality of old terminal devices. The old fire alarm facility (first fire alarm facility) is replaced with a plurality of new terminal devices (second terminal devices) in place of the plurality of old terminal devices, and a new fire receiver (first device) in place of the old fire receiver RE1. 2 fire receivers), the plurality of new terminal devices and the new fire receiver are connected via the transmission line L1, and between the new fire receiver and the plurality of new terminal devices. In the second transmission method For example, when signal transmission is performed by a point polling method), individual information of the plurality of new terminal devices is renewed to a new fire alarm facility (second fire alarm facility) configured to be collected by the new fire receiver. An example of a fire alarm facility at the time of split renewal of the old fire alarm facility having a configuration in which the plurality of new terminal devices (for example, the second-floor terminal group SE20) are provided instead of a part of the plurality of old terminal devices. It is.

  Further, the transmission conversion repeater 10 has the transmission line L1 (branch line L2) so that the old fire receiver RE1 is connected to the front stage and the plurality of new terminal devices SE20 are connected to the rear stage when the split renewal is performed. ) To perform signal transmission with the plurality of new terminal devices SE20 by the second transmission method, to perform signal transmission with the old fire receiver RE1 and the first transmission method, and to perform the signal transmission by the plurality of new terminal devices SE20. This is an example of a transmission conversion repeater configured so that the individual fire information can be collected by the old fire receiver RE1.

  FIG. 2 is a block diagram showing a configuration of the transmission conversion repeater 10.

  The transmission conversion repeater 10 includes a CPU 11 (an example of a control unit), a primary side reception circuit 12 that receives a signal from the fire receiver RE1, and a secondary side transmission circuit 13 that transmits a signal to a terminal group in the subsequent stage. The secondary side reception circuit 14 that receives signals from the terminal group at the subsequent stage and the primary side transmission circuit 15 that transmits signals to the fire receiver RE1. The transmission conversion repeater 10 includes a transmission constant voltage circuit 16, a power supply monitoring circuit 17 (an example of power supply monitoring means), a control circuit constant voltage circuit 18, a secondary side constant voltage circuit 19, a ROM 21, And RAM 22. The transmission conversion repeater 10 includes a self-address setting unit 23 (an example of a self-address setting unit), a short circuit detection circuit 24 (an example of an abnormality monitoring unit), a disconnection detection circuit 25 (an example of an abnormality monitoring unit), Have Furthermore, the primary side receiving circuit 12, the secondary side transmitting circuit 13, the secondary side receiving circuit 14, the primary side transmitting circuit 15, the power supply monitoring circuit 17, the short circuit detecting circuit 24, the disconnection detecting circuit 25, And the CPU 11 are respectively provided with insulating circuits 12i, 13i, 14i, 15i, 17i, 24i, 25i using photocouplers or the like. The ROM 21 and the RAM 22 may be built in the CPU 11 instead of being externally attached.

  The transmission constant voltage circuit 16 is a circuit which is supplied with power from the transmission line L1 which is a power and signal line and is provided on the primary side (transmission line L1 side) of the transmission conversion repeater 10, that is, a primary side receiving circuit. 12. A constant voltage is supplied to the primary side transmission circuit 15. The control circuit constant voltage circuit 18 and the secondary side constant voltage circuit 19 are supplied with power from the secondary side power line L3 (see FIG. 1).

  The control circuit constant voltage circuit 18 supplies a constant voltage to the CPU 11. The secondary side constant voltage circuit 19 is a circuit provided on the secondary side (branch line L2 side) of the transmission conversion repeater 10, that is, the power supply monitoring circuit 17, the secondary side transmission circuit 13, the secondary side reception circuit 14, A constant voltage is supplied to the short-circuit detection circuit 24 and the disconnection detection circuit 25, and power is supplied to the branch line L2 side (terminal group SE20 for the second floor) that is a power and signal line, so that signal transmission of the branch line L2 is good. To be able to.

  As described above, the transmission conversion repeater 10 is isolated from the primary side and the secondary side by the insulation circuits 12i, 13i, 14i, 15i, 17i, 24i, and 25i, and is different from the transmission line L1. It is connected to the fire receiver RE1 via the secondary side power line L3, and the power is supplied to the transmission conversion repeater 10 and the branch line L2 side. Signals can be transmitted without any problem without any problem.

    Further, the primary side transmission circuit 15 and the reception circuit 12 perform signal transmission by the first transmission method (in this case, cyclic polling method) with the old fire receiver RE1, as shown in FIG. In the main polling called by the old fire receiver RE1, the main polling signal (command signal consisting of “AD / return command”) is received, and the individual information (“AD / individual information”) concerning the new terminal device SE20 of the called address The main polling operation for transmitting a return signal consisting of

  The secondary transmission circuit 13 and the reception circuit 14 perform signal transmission with the plurality of new terminal devices SE20 by the second transmission method (in this case, polling selecting method), and as shown in FIG. The terminal equipment is divided into a plurality of groups, sub-polling is performed for each group, and a sub-polling signal is transmitted to a predetermined group among the plurality of groups (a command signal including “AD, CM1, CM2, and PS” is transmitted). Then, a sub-polling operation is performed in which individual information (return signal consisting of “D1 · SS”) from the new terminal device SE20 belonging to the group is received in a time division manner.

  The “main polling” is polling performed by the fire receiver RE1 to the transmission conversion repeater 10 and the old terminal device on the transmission line L1. The “sub-polling” is polling performed by the transmission conversion repeater 10 on a terminal group on the branch line L2 such as the second-floor terminal group SE20.

  The self address setting unit 23 is, for example, an EEPROM and is a storage area for setting the self address AD0. The self address AD0 is “0” in the initial state, that is, not set, and is given to the old terminal device removed as in the case of the surplus address or the second-floor terminal group SE20 as necessary at the site. The assigned address is assigned and the self address AD0 is set.

  The short-circuit detection circuit 24 detects disconnection of the branch line L2, and is configured by, for example, a short-circuit detection comparator. If the voltage V1 of the branch line L2 is lower than the reference voltage, a short-circuit signal is output to the CPU 11. . Here, the reference voltage is a predetermined voltage level equal to or lower than the low signal because the transmission signal on the branch line L2 is composed of a pulse signal based on a high signal and a low signal.

  The disconnection detection circuit 25 detects disconnection of the branch line L2. For example, the disconnection detection circuit 25 includes a disconnection detection comparator or the like, and outputs a disconnection signal to the CPU 11 when the voltage V1 of the branch line L2 becomes substantially zero.

  The CPU 11 performs different operation processes depending on whether or not the self address AD0 is set in the self address setting unit 23. That is, when the self address AD0 is set in the self address setting unit 23, the CPU 11 performs an individual information notifying operation for sending individual information about the self to the old fire receiver RE1, and the self address AD0 is set. When there is not, the individual information notification operation of the individual information about the self is not performed. Therefore, the transmission conversion repeater 10 can easily select operation processing contents performed by the transmission conversion repeater 10 for each site according to the situation at the site.

  Further, when the self address AD0 is not set in the self address setting unit 23, the CPU 11 performs an abnormality monitoring operation by the abnormality monitoring units 24 and 25, that is, a short circuit detecting operation by the short circuit detecting unit 24, or a disconnection by the disconnection detecting unit 25. Does not detect. Therefore, the transmission conversion repeater 10 can reduce power consumption by the amount of omitting this operation. For example, depending on the contents of system changes such as an increase in the number of terminal devices, power supply that can be supplied to the transmission conversion repeater 10 Even if the amount is limited, the transmission conversion repeater 10 can be provided.

  Next, the operation of the above embodiment will be described.

  FIG. 3 is a flowchart showing an outline of the operation of the transmission conversion repeater 10, and FIG. 4 is a diagram showing a transmission pattern table T1 used in the first embodiment.

  First, in S10, the transmission conversion repeater 10 recognizes the final address ADz of the terminal device provided in the fire alarm facility 100 so that the main polling and the sub-polling can be performed in synchronization.

  In S20, referring to the transmission pattern table T1 shown in FIG. 4, a sub-polling (polling to the terminal) pattern synchronized with the main polling is selected based on the final address ADz.

  In S30, the selected sub-polling pattern is stored in the RAM 22. Specifically, the group G (cluster) that transmits the sub-polling signal when the call address AD of the main polling signal is received is stored correspondingly. For example, in the transmission pattern table T1 shown in FIG. 4, when the final address ADz is 200, the group G0 (cluster 0) that transmits the secondary polling signal is stored correspondingly when the call address AD189 of the main polling signal is received, The group G1 (cluster 1) that transmits the secondary polling signal is stored correspondingly when the call address AD5 of the main polling signal is received, and the group G2 (cluster 2) that transmits the secondary polling signal when the call address AD21 of the main polling signal is received. ), And correspondingly stores the group G12 (cluster 12) that transmits the secondary polling signal when the call address AD178 of the main polling signal is received.

  In S40, an abnormality monitoring operation, that is, a short-circuit detection operation and a disconnection detection operation are performed. Next, in S50, a main polling / subpolling operation is performed based on the subpolling pattern stored in the RAM 22, and thereafter, S40 and S50 are performed. repeat.

  The pattern table T1 shown in FIG. 4 shows the transmission timing between the transmission conversion repeater 10 and the new terminal. This timing is the communication between the old fire receiver RE1 and the transmission conversion repeater 10, and which address AD is receiving the main polling, the transmission conversion repeater 10 should sub-polling which group G. It is the timing that defines whether or not there is.

  By following the transmission pattern, the transmission conversion repeater 10 can collect individual information from the new terminal and send it to the old fire receiver RE1 at the shortest timing with respect to the main polling from the old fire receiver RE1. .

  FIG. 8 is a diagram showing an example of polling synchronization used in the above embodiment.

  As shown in the timing chart of the polling synchronization example shown in FIG. 8, the CPU 11 executes the main polling operation and the sub-polling operation in parallel.

  The main polling is a cyclic polling method in which terminal devices are individually called and the individual information is received. On the other hand, the secondary polling divides the terminal device into a plurality of groups G, performs secondary polling for each group G, and sends a secondary polling signal to a predetermined group G among the plurality of groups G. This is a polling selecting method in which individual information from a plurality of terminal devices to which it belongs is continuously received in a time division manner.

  Note that one main polling frame in FIG. 8 (for example, one frame indicated by A1 in FIG. 8) is a frame in which the fire receiver RE1 receives individual information of each terminal device by transmission and reception, and is shown in FIG. Corresponds to A2. Further, one frame of sub-polling (for example, one frame indicated by B1 in FIG. 8) is a frame in which the fire receiver RE1 receives individual information of a plurality of terminal devices belonging to each group G by transmission and reception. This corresponds to one frame of 10 (portion represented as point polling (G0) in FIG. 10).

  Here, the main polling and the secondary polling are different in the polling method, and further, since the transmission speed when collecting individual information for each terminal is different, if the main polling and the secondary polling are performed asynchronously (main polling and When the secondary polling is operated without being associated with each other), the time until the individual information output from the new terminal device SE20 is notified to the old fire receiver RE1 through the transmission conversion repeater 10 is constant. Instead, it can be very late, which is a problem in the responsiveness of the system.

  That is, the maximum delay time is one cycle of main polling, for example, “maximum delay time = number of addresses × 20 msec (signal transmission required time per address)”. = 200 addresses × 20 msec = 4 sec ”.

  Therefore, the final address ADz is recognized, and when the call address AD of the main polling signal is received by the transmission pattern table T1, the group G (cluster) that transmits the sub polling signal is stored correspondingly, and the transmission conversion repeater 10 The start timing of the secondary polling for each group G is detected from the call address AD of the main polling, and the corresponding group G is subjected to the secondary polling.

  Thus, immediately before the address AD of any new terminal equipment SE21-23 is called from the old fire receiver RE1, sub-polling is sent to the group G to which the new terminal equipment SE21-23 of this address AD belongs, and this address The individual information of the new AD terminal devices SE21 to 23 is received, and the individual information is sent out in response to the main polling to the new terminal devices SE21 to 23 of the address AD performed immediately thereafter.

  For example, when the final address ADz in FIG. 8 is 200, as an example, when the call address AD5 of the main polling signal is received, subpolling is performed on the group G1 (cluster 1) of the addresses AD17 to AD32. In response to the main polling of the address AD17 (and addresses AD18 to 32 of the group G1) performed immediately after that, the individual information of the new terminal device SE20 of the corresponding address AD is transmitted, and this individual information is transmitted to the old fire receiver. RE1 can be received.

  As shown in the figure, this polling synchronization is performed not only for the group G1 (cluster 1) but also for all the groups G0 to G12.

  As described above, since the main polling and the sub-polling are performed synchronously so that the latest individual information of the new terminal device SE20 can be transmitted to the old fire receiver RE1, the relationship between the new terminal device SE20 and the old fire receiver RE1. Information transmission time loss can be prevented. That is, when the old equipment is partially changed to the new equipment, it is possible to prevent time loss of information transmission between the old and new different terminal devices and the fire receiver.

  Next, the operation (S10) for recognizing the final address ADz of the terminal device connected to the fire receiver RE1 will be described.

  FIG. 5 is a flowchart showing more specifically the operation (S10) for recognizing the final address ADz of the terminal device connected to the fire receiver RE1.

  The transmission conversion repeater 10 recognizes the final address ADz of the terminal device so that main polling and sub-polling can be performed in synchronization.

  First, in S11, the variable ADz of the final address is initialized to zero. Then, in S12, it is determined whether or not the transmission conversion repeater 10 has received the main polling signal (polling signal from the fire receiver RE1). If the main polling signal is not received, it waits. If the main polling signal is received, it is determined in S13 whether the address AD of the received main polling signal is smaller than the final address ADz. If the address AD is larger than the final address ADz, the address AD of the received main polling signal is stored in the RAM 22 as the final address ADz in S14, the process returns to S12, and the detection of the final address ADz is repeated.

  If it is determined in S13 that the address AD is smaller than the final address ADz, it means that the main polling operation is performed on all the addresses AD and the main polling operation is performed again on the first address AD. In S15, the final address ADz is stored in the RAM 22, and the recognition of the final address ADz is finished.

  Next, the abnormality monitoring operation (S40) in the above embodiment will be described.

  FIG. 6 is a flowchart showing more specifically the abnormality monitoring operation (S40) in the above embodiment.

  First, in S41, it is determined whether or not the self address AD0 is set. If the self address AD0 is “0”, that is, if the self address AD0 is not set, the short circuit detection operation and the disconnection detection operation are not performed. The abnormality monitoring operation is terminated. If the self address AD0 is other than “0” in S41, that is, if the self address AD0 is set, in S42, the short circuit detection operation of the branch line L2 is performed to determine whether or not a short circuit is detected.

  If a short circuit is detected in S42, short circuit information is stored in the RAM 22 in S43, and a disconnection detection operation for the branch line L2 is performed in S44 to determine whether a disconnection has been detected. If no short circuit is detected in S42, the process proceeds to S44.

  If a disconnection is detected in S44, the disconnection information is stored in the RAM 22 in S45, and the abnormality monitoring operation is terminated. If no disconnection is detected in S44, the abnormality monitoring operation is terminated.

  Next, the main polling / subpoling operation (S50) in the above embodiment will be described.

  FIG. 7 is a flowchart showing more specifically the main polling / subpoling operation (S50) in the above embodiment.

  First, in S51, it is determined whether or not a main polling signal has been received. If it has not been received, the main polling and sub-polling operations are terminated. If it is determined in S51 that the main polling signal has been received, it is determined in S52 whether or not the individual information (status information) of the address AD called by the received main polling signal is stored in the RAM 22. If the call address AD is stored, the individual information of the address AD is returned in S53 in response to the main polling. If the call address AD is not stored, the operation of returning the individual information of the address AD is not executed in response to the main polling.

  That is, when the self-address AD0 is set, the transmission conversion repeater 10 sends individual information (short-circuit information, disconnection information, normal information, etc.) regarding itself when the call address AD is the self-address AD0. To perform the operation. Also, the transmission conversion repeater 10 performs a sub-polling operation in S44 to S46 described later on the new terminal device SE20 connected to the secondary transmission line (branch line) L2 of the transmission conversion repeater 10. Thus, the individual information of the new terminal device SE20 is received, and the received individual information is stored in the RAM 22. Therefore, the transmission conversion repeater 10 also returns individual information related to the new terminal device SE20 connected to the secondary transmission line (branch line) L2 of the transmission conversion repeater 10 itself. Note that the transmission conversion repeater 10 does not have the individual information of the terminal device other than the received individual information. Therefore, only the status information relating to the new terminal device SE20 connected to the secondary transmission line (branch line) L2 of the transmission conversion repeater 10 itself is returned.

  Next, in S54, it is determined whether the call address AD of the main polling signal is the execution timing of the secondary polling. That is, in S30, it is determined whether or not the main polling address AD in the correspondence pattern between the main polling address AD and the secondary polling group G stored in the RAM 22 is satisfied.

  If it corresponds to the main polling address AD in the corresponding pattern, it is determined that it is the timing for performing the secondary polling, and in S55, the secondary polling of the corresponding group G is performed, and the individual information of the terminal device subjected to secondary polling is stored in the RAM 22. Store, and the main polling and sub-polling operations are terminated.

  Further, in S54, it is determined whether or not it corresponds to the main polling address AD in the corresponding pattern. If it is determined that it does not correspond, it is determined that it is not the execution timing of the secondary polling, and the primary polling / subpolling operation is ended.

  In the above flowchart, the main polling operation (S51 to S53) and the secondary polling operation (S54 to S56) are divided in terms of time in the explanation of the flowchart, but the polling synchronization example shown in FIG. As shown in the timing chart, the main polling operation and the secondary polling operation are executed in parallel.

  In the above embodiment, the transmission conversion repeater 10 does not perform the abnormality monitoring operation when the self address AD0 is not set in the self address setting unit 23 (S42 to S45 in FIG. 6). An operation may be performed. Even in such a case, the transmission conversion repeater 10 does not perform the individual information sending operation regarding itself, so the operation processing content performed by the transmission conversion repeater 10 is simply selected for each site according to the situation of the site. it can.

  In the above embodiment, the transmission conversion repeater 10 synchronizes main polling and sub-polling with each other, but main polling and sub-polling can also be performed asynchronously. When the main polling and the sub-polling are performed asynchronously, the time until the individual information output from the new terminal device SE20 is notified to the old fire receiver RE1 through the transmission conversion repeater 10 is not constant. However, the processing of the CPU 11 is easy.

  In the above embodiment, a plurality of old terminal devices (an example of a first terminal device) and an old fire receiver RE1 (an example of a first fire receiver) are connected via a transmission line L1. An old fire alarm facility configured to perform signal transmission by the first transmission method between RE1 and the plurality of old terminal devices, and to collect individual information of the plurality of old terminal devices by the old fire receiver RE1 ( An example of the first fire alarm facility) is replaced with a plurality of new terminal devices (an example of second terminal devices) instead of the plurality of old terminal devices, and a new fire receiver (second fire) is replaced with the old fire receiver RE1. An example of a receiver), the plurality of new terminal devices and the new fire receiver are connected via the transmission line L1, and between the new fire receiver and the plurality of new terminal devices. In the second transmission method signal transmission The individual information of the plurality of new terminal devices is used when renewed to a new fire alarm facility (an example of a second fire alarm facility) configured to be collected by the new fire receiver. At the time of split renewal of the old fire alarm facility having a configuration in which the plurality of new terminal devices SE20 are provided instead of the part, the old fire receiver RE1 is connected to the front stage, and the plurality of new terminal devices SE20 are connected to the rear stage. Connected to the transmission line L1, so as to perform signal transmission with the plurality of new terminal devices and the second transmission method, and perform signal transmission with the old fire receiver RE1 and the first transmission method. An example of the self-address setting means, which is a transmission conversion repeater 10 configured to collect the individual information of the new terminal equipment SE20 of the old fire receiver RE1. Since the self-address setting unit 23 and the CPU 11 as an example of control means for performing different operation processes depending on whether or not the self-address setting means 23 is set, the transmission conversion repeater 10 is provided with a self-address setting section 23. Only the address setting means 23 and the control means 11 that performs different operation processes depending on whether or not the self address is set in the self address setting means 23, the operation processing contents performed by the transmission conversion repeater 10 are It can be easily selected for each site according to the situation.

  In the above embodiment, when the self address is set in the self address setting means 23, the control means 11 sends individual information about the self to the old fire receiver RE1 or the new fire receiver. When the operation is performed and the self-address is not set, the individual information notification operation is not performed. Therefore, the operation processing content performed by the transmission conversion repeater can be easily selected for each site according to the situation at the site.

  The embodiment includes abnormality monitoring means 24 and 25 for monitoring abnormality relating to the self, and the individual information relating to the self includes abnormality information.

  In the above embodiment, the abnormality monitoring means 24 and 25 are the short-circuit detection circuit 24 as an example of the short-circuit detection means for detecting the short-circuit of the transmission line L1 (branch line L2) on the secondary side, or the disconnection detection for detecting the disconnection. It has a disconnection detection circuit 25 as an example of the means, and the abnormality information includes short-circuit information or disconnection information.

  In the above embodiment, when the self address is not set in the self address setting means 23, the control means 11 performs the abnormality monitoring operation by the abnormality monitoring means 24, 25, that is, the short detection operation by the short detection means 24. Since the disconnection detection operation by the disconnection detection means 25 is not performed, the transmission conversion repeater 10 can reduce power consumption by the amount of omitting this operation. Depending on the contents of the change, the transmission conversion repeater 10 can be provided even when the amount of power supply that can be supplied to the transmission conversion repeater 10 is limited.

  In the above embodiment, when the self address is not set in the self address setting means 23, the control means 11 does not supply power to the abnormality monitoring means, that is, the short circuit detection means 24 and the disconnection detection means 25. It may be. According to this, the transmission conversion repeater 10 can further reduce power consumption. For example, the amount of power supply that can be supplied to the transmission conversion repeater 10 is limited depending on the changes in the system, such as an increase in the number of terminal devices. Even if it is a case, the transmission conversion repeater 10 can be provided.

  In the above embodiment, the transmission conversion circuit 10 includes a power monitoring circuit 17 as an example of a power monitoring unit that is powered from the old fire receiver RE1 and monitors the power supply voltage that is supplied. When the power supply monitoring means 17 detects a drop in the power supply voltage, the self address setting means 23 may set the self address to an unset state if the self address is set. According to this, when the power supply amount that can be supplied to the transmission conversion repeater 10 is limited, even if the power supply voltage decreases due to some cause, the transmission conversion repeater 10 does not stop functioning, and the old system It can perform the minimum necessary function operation of the signal relay function between the device and the new system equipment.

  In the above example, as a split renewal, we showed the case where the old terminal device was changed to the new terminal device, and then the old fire receiver was changed to the new fire receiver. The receiver may be changed to the new fire receiver, and then the old terminal device may be changed to the new terminal device. At this time, the transmission conversion repeater may be configured so that the fire receiver can collect the individual information of the terminal device between the new fire receiver and the old terminal device.

  That is, the transmission conversion repeater 10 of the above-described embodiment is configured such that the old fire receiver RE1 is used at the time of split renewal of an old fire alarm facility having a configuration in which a plurality of new terminal devices SE20 are provided instead of a part of the plurality of old terminal devices. Is connected to the transmission line L1 so that the plurality of new terminal devices SE20 are connected to the subsequent stage, and performs signal transmission with the plurality of new terminal devices SE20 by the second transmission method, The old fire receiver RE1 performs signal transmission using the first transmission method, and the individual information of the plurality of new terminal devices SE20 is collected by the old fire receiver RE1. Instead of the repeater 10, the new fire alarm equipment having the new fire receiver in place of the old fire receiver RE 1 is divided and renewed at the time of split renewal. A disaster receiver is connected to the front stage, and the plurality of old terminal devices are connected to the transmission line L1 so as to be connected to the rear stage, and signal transmission is performed with the plurality of old terminal devices by the first transmission method, A transmission conversion repeater configured to perform signal transmission with the new fire receiver and the second transmission method and collect the individual information of the plurality of old terminal devices can be used by the new fire receiver. At this time, the transmission conversion circuit is supplied with power from the new fire receiver. In addition, the control means performs an individual information notification operation for sending individual information about the self to the new fire receiver when the self address is set in the self address setting means, and when the self address is not set, The individual information notification operation is not performed.

1 is a block diagram showing a fire alarm facility 100 including a transmission conversion repeater 10 that is Embodiment 1 of the present invention. FIG. 2 is a block diagram showing a configuration of a transmission conversion repeater 10. FIG. 4 is a flowchart showing an outline of the operation of the transmission conversion repeater 10; It is a figure which shows the transmission pattern table | surface T1. It is a flowchart which shows more specifically the operation | movement (S10) which recognizes the last address ADz of a terminal device. It is a flowchart which shows abnormality monitoring operation (S40) more concretely. It is a flowchart which shows the main polling / subpoling operation (S50) more specifically. It is a figure which shows the example of a polling synchronization used in the said Example. It is a time chart explaining the signal transmission of a cyclic polling system. It is a time chart explaining the signal transmission of a polling selecting system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Fire alarm equipment, 10 ... Transmission conversion repeater, 11 ... CPU (control means), 12 ... Primary side receiving circuit, 13 ... Secondary side transmitting circuit, 14 ... Secondary side receiving circuit, 15 ... Primary side Transmission circuit, 16 ... constant voltage circuit for transmission, 17 ... power supply monitoring circuit, 18 ... constant voltage circuit for control circuit, 19 ... secondary side constant voltage circuit, 21 ... ROM, 22 ... RAM, 23 ... self address setting unit ( Self address setting means), 24 ... Short circuit detection circuit (abnormality monitoring means), 25 ... Disconnection detection circuit (abnormality monitoring means), RE1 ... Fire receiver (old fire receiver, first fire receiver), SE10 ... 1st floor Terminal group (old terminal device, first terminal device), SE20 ... second floor terminal group (new terminal device, second terminal device), L1 ... transmission line, L2 ... branch line (secondary side transmission line), L3 ... Secondary power line.

Claims (7)

A plurality of first terminal devices and a first fire receiver are connected via a transmission line, and signal transmission by the first transmission method is performed between the first fire receiver and the plurality of first terminal devices. Performing the first fire alarm facility configured to collect the individual information of the plurality of first terminal devices by the first fire receiver, replacing the plurality of first terminal devices with the plurality of second terminal devices, A second fire receiver is provided in place of the first fire receiver, the plurality of second terminal devices and the second fire receiver are connected via the transmission line, and the second fire receiver And the plurality of second terminal devices perform second signal transmission using a second transmission method, and the second fire receiver is configured to collect the individual information of the plurality of second terminal devices by the second fire receiver. Used when renewing equipment,
At the time of split renewal of the first fire alarm facility having the configuration in which the plurality of second terminal devices are provided instead of a part of the plurality of first terminal devices, the first fire receiver is connected to the preceding stage, The second terminal device is connected to the transmission line so as to be connected to the subsequent stage, performs signal transmission with the plurality of second terminal devices by the second transmission method, and the first fire receiver and the first A transmission conversion repeater configured to perform signal transmission according to a transmission method and collect the individual information of the plurality of second terminal devices by the first fire receiver;
Alternatively, at the time of split renewal of the first fire alarm facility in which the second fire receiver is provided instead of the first fire receiver, the second fire receiver is connected to the previous stage, and the plurality of first fire receivers are connected. The terminal device is connected to the transmission line so as to be connected to the subsequent stage, performs signal transmission with the plurality of first terminal devices according to the first transmission method, and according to the second fire receiver and the second transmission method. A transmission conversion repeater configured to perform signal transmission and collect the individual information of the plurality of first terminal devices by the second fire receiver,
Self address setting means;
Control means for performing different operation processing depending on whether or not the self address is set in the self address setting means,
A transmission conversion repeater comprising:   When the self address is set in the self address setting means, the control means performs an individual information notifying operation for sending individual information related to the self to the first fire receiver or the second fire receiver. 2. The transmission conversion repeater according to claim 1, wherein the individual information notification operation is not performed when an address is not set. Provide an abnormality monitoring means to monitor abnormality related to self,
The transmission conversion repeater according to claim 2, wherein the individual information about the self includes abnormality information. As the abnormality monitoring means, it has a short-circuit detecting means for detecting a short circuit of the transmission line on the secondary side, or a disconnection detecting means for detecting a disconnection,
4. The transmission conversion repeater according to claim 3, wherein the abnormality information includes short circuit information or disconnection information.   5. The transmission conversion repeater according to claim 3, wherein said control means does not perform an abnormality monitoring operation by said abnormality monitoring means when a self address is not set in said self address setting means.   6. The transmission conversion repeater according to claim 3, wherein said control means does not supply power to said abnormality monitoring means when a self address is not set in said self address setting means. The transmission conversion circuit is supplied with power from the first fire receiver or the second fire receiver, and has power monitoring means for monitoring the power supply voltage supplied to the power.
The control means, when the power supply monitoring means detects a drop in power supply voltage, if the self address is set in the self address setting means, the self address is not set. The transmission conversion repeater according to 1 to 6.

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