JP3350213B2 - Repeater for fire alarm and receiver for fire alarm - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection between a receiving unit such as a fire receiver and a repeater via a signal line, the receiving unit calling the repeater by polling, collecting predetermined information, and collecting predetermined information. The present invention relates to a repeater and a receiving unit of a fire alarm system that executes the control of (1).

[0002]

2. Description of the Related Art In a conventional fire alarm system, a fire receiver and a plurality of repeaters are connected by signal lines, and different addresses are assigned to the plurality of repeaters, respectively. However, a method of collecting information from a specific relay and transmitting a control command to the specific relay (a so-called polling method) is known.

The above-mentioned repeater has a memory storing its own type, address, etc., and an MPU for controlling the entire repeater.
(Microprocessor).

[0004]

In the above conventional example,
When the fire receiver sends the simultaneous recovery command, all the repeaters perform initialization simultaneously. As this initial setting, for example, there is a peripheral confirmation such as resetting of a starting circuit for starting the controlled device.

[0005] In this case, all the repeaters initialize at the same time, and all the fire detectors and the like connected to the repeaters are initialized at the same time. Therefore, the power consumption of the fire receiver that supplies power to the repeaters is reduced. The larger the number of repeaters connected to the fire receiver, the larger the current flowing through the signal line, the larger the voltage drop of the signal line, which may cause transmission failure. There is.

In order for the repeater to control a controlled device such as a smoke prevention device, a latch relay is provided in advance in the repeater, the controlled device is connected to the latch relay, and the latch relay is set and reset. Thus, the controlled device is started and restored. Specifically, to recover the controlled device, a reset signal is output from the output port of the MPU, and the latch relay is reset by the reset signal. In this case, the reset signal from the MPU is a signal of the same system as the signal line, the signal for activating the latch relay is a signal of the same system as the power supply line, and it is preferable to insulate these signals from each other. , A photocoupler is provided between a reset signal from the MPU and a signal for resetting the latch relay. In order to drive this photocoupler, it is necessary to pass a current of, for example, 30 mA. That is, it is necessary to pass a reset pulse of 30 mA from the output port of the MPU. The more latch relays to be performed, the greater the voltage drop of the signal line.

The above problem occurs not only at the time of simultaneous recovery but also at the time of simultaneous ringing or the like.

An object of the present invention is to provide a repeater of a fire alarm system capable of reducing a voltage drop of a signal line connecting a receiver such as a fire receiver and a repeater at the time of simultaneous recovery or simultaneous ringing. It is intended for.

Further, the present invention provides a receiving unit of a fire alarm system capable of reducing a voltage drop of a signal line connecting a receiving unit such as a fire receiver and a repeater at the time of simultaneous recovery or simultaneous ringing. It is intended to do so.

[0010]

SUMMARY OF THE INVENTION According to the present invention, there is provided a communication system comprising:
The receiver such as a fire receiver is connected to the repeater,
The receiver calls the repeater by a ring, and
In a fire alarm system that collects constant information and executes prescribed control
In the relay, the relay is provided with a latch relay,
Simultaneous restoration command or simultaneous sounding command from the receiving unit
When the repeater receives the message,
When the repeater receives the simultaneous ringing command,
When terminal devices are divided into multiple groups,
The predetermined time, which differs for each group,
For a predetermined time according to the group of
Wait for reset, and after the predetermined time elapses,
Fire with control means to initiate reset of latch relay
It is a repeater for disaster alerting equipment.

[0011]

According to the present invention, a relay is provided with a latch relay,
Simultaneous restoration command or simultaneous sounding command from the receiving unit
When the repeater receives the message,
When the repeater receives the simultaneous ringing command,
When terminal devices are divided into multiple groups,
The predetermined time, which differs for each group,
For a predetermined time according to the group of
Wait for reset, and after the predetermined time elapses,
Since the reset of the latch relay is started, the voltage drop of the signal line connecting the receiving unit such as a fire receiver and the repeater can be reduced at the time of simultaneous recovery or simultaneous ringing.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a brief description will be given of a polling selecting method used in the present invention. The polling selecting method is based on the fact that terminal devices connected to a fire receiver are divided into a plurality of groups in advance, and when called from the fire receiver, only the terminal device whose state has changed responds. . The response timing differs between the system polling and the point polling. In the system polling, the timing at which the terminal device responds differs for each group. In the point polling, the response timing differs for each terminal device. If there is no response in system polling, the status of all terminal devices has not changed at all, and if there is a response in system polling, the status of any terminal device belonging to the group that responded has changed. , Point polling the terminal devices belonging to the group one by one.

FIG. 1 shows a repeater T according to an embodiment of the present invention.
FIG.

The repeater T includes an MPU (microprocessor) 10, a ROM 11, an EEPROM 20, an RA
M21, 22, 23, a transmission / reception unit 33, an interface 33a, latch relays R1 to R4, disconnection / short detection circuits D1 to D4, and a power supply circuit 40.

The ROM 11 is a storage area for programs relating to the flowcharts shown in FIGS. 2, 3 and 4, and the EPROM 20 is an area for storing the ID of the repeater T such as its own address and type. The RAM 21 is a work area.

The RAM 22 is a memory for a timer.
This is for counting the waiting time according to the self-address of the repeater T, and the output port P12 of the MPU 10
This is for counting the time when the output timings of the reset signals output from P22, P32 and P42 are shifted from each other.

The RAM 23 is an area for storing status information such as which latch is set among the latch relays R1 to R4.

The latch relay R1 comprises a relay coil C1, switches S11 and S12, and transistors T11 and T12.
The latch relay R2 includes a relay coil C2, switches S21 and S22, and transistors T21 and T22.
The latch relay R3 has a relay coil C3, switches S31 and S32, and transistors T31 and T32. The latch relay R4 has a relay coil C4, switches S41 and S42, and transistors T41 and T42. Note that, in the latch relays R1 to R4, a portion that performs latching is omitted in FIG.

The transistor T11 is turned on when a pulse-like set signal is received from the output port P11 of the MPU 10, and energizes the relay coil C1 to turn on the latch relay R1.
Is set, whereby the switch S1 is set.
1, S12 are switched to set terminals s, s, and the district bell B1 sounds. The transistor T12 is
It turns on when a pulse-shaped reset signal is received from the output port P12 of the MPU 10, interrupts energization of the relay coil C1, and resets the latch relay R1.
As a result, the switches S11 and S12 are connected to the test terminals t,
t, and the route that rings the district bell B1 is cut off.

The transistor T21 is turned on when receiving a pulse-like set signal from the output port P21 of the MPU 10, and energizes the relay coil C2, thereby turning on the latch relay R2.
Is set by the switch S2.
1, S22 is switched to the set terminals s, s, and the district bell B2 sounds. The transistor T22 is
It turns on when a pulse-shaped reset signal is received from the output port P22 of the MPU 10, and stops energization of the relay coil C2 to reset the latch relay R2.
As a result, the switches S21 and S22 are connected to the test terminals t,
t, and the path that rings the district bell B2 is cut off.

The transistor T31 is turned on when receiving a pulse-like set signal from the output port P31 of the MPU 10, energizes the relay coil C3, and turns on the latch relay R3.
Is set, whereby the switch S3 is set.
1, S32 is switched to the set terminals s, s, and the district bell B3 sounds. The transistor T32 is
It turns on when a pulse-shaped reset signal is received from the output port P32 of the MPU 10, interrupts energization of the relay coil C3, and resets the latch relay R3.
As a result, the switches S31 and S32 are connected to the test terminals t,
t, and the route that rings the district bell B3 is cut off.

The transistor T41 is turned on when a pulse-like set signal is received from the output port P41 of the MPU 10, energizes the relay coil C4, and turns on the latch relay R4.
Is set by the switch S4
1, S42 is switched to the set terminals s, s, and the district bell B4 sounds. The transistor T42 is
It turns on when a pulse-shaped reset signal is received from the output port P42 of the MPU 10, interrupts energization of the relay coil C4, and resets the latch relay R4.
As a result, the switches S41 and S42 are connected to the test terminals t,
t, and the path that rings the district bell B4 is cut off.

When the power is applied to the repeater T,
After the power is turned on, the control unit waits for reset of each of the latch relays R1, R2, R3, and R4 for a predetermined time corresponding to the self address of the repeater T, and resets the latch relays R1, R2, R3, and R4 after the predetermined time has elapsed. Is started. When a plurality of terminal devices are connected to the fire receiver, the predetermined time according to the self-address of the repeater T is different for each terminal device. When a plurality of terminal devices are divided into a plurality of groups, the predetermined time according to the self-address of the terminal device is different for each group. In each of the above cases, if the relay T is provided with a plurality of latch relays, the plurality of latch relays R
The reset timings of 1, R2, R3, and R4 are shifted from each other.

FIG. 2 is a flowchart showing the operation of the repeater T in the above embodiment, and shows an example in which a waiting time according to the self-address of the repeater T is provided.

When the simultaneous recovery command is sent from the fire receiver, the timer is started using the RAM 22 (S
1), and waits for a time corresponding to the self address of the repeater T (S2). As a time corresponding to the self address of the repeater T, a different time may be adopted for each repeater when a large number of repeaters are connected, and when a plurality of terminal devices are divided into a plurality of groups. , A different time may be adopted for each group.

If a large number of repeaters are connected, and if one tries to wait for a different time for each repeater, the repeater T
Is the n-th address and the waiting time from one repeater to the next is, for example, 160 ms, the total waiting time of the repeater T is 160 ms × (n−1).
It is. On the other hand, when a plurality of terminal devices are divided into a plurality of groups, if a different time is waited for each group, the repeater T starts measuring time according to the group to which the repeater T belongs. I do. The waiting time from one group to the next is 16
In the case of 0 ms, if the repeater T belongs to the m-th group, the waiting time of the repeater T is 160 ms ×
(M-1).

When the waiting time has elapsed (S2), MP
U10 is the output port P12, P22, P32, P42
Outputs a reset signal (S3). by this,
Since the transistors T12, T22, T32, T42 are turned on (S4), the relay coils C1, C2, C3, C4
Is stopped (S5), and the latch relays R1, R2,
R3 and R4 are reset (S6). Thereafter, normal monitoring and control are performed (S7).

In the above-described embodiment, the MPU stands by for a time corresponding to the self address of the repeater T (S2).
The timing at which the reset signal is output differs from that of the other repeaters, and the output of the reset signal of the MPU is temporally dispersed, so that a large current can be prevented from temporarily flowing through the signal line SL. For this reason, at the time of simultaneous recovery, it is possible to reduce the voltage drop of the signal line connecting the fire receiver and the terminal device.

FIG. 3 is a flowchart showing another operation in the repeater T in the above embodiment, and shows an example in which the reset timing is shifted for each latch relay.

When a simultaneous recovery command is sent from the fire receiver, a timer is started using the RAM 22 (S22).
11) First, a reset signal is output from the output port P12 of the MPU 10 (S12), whereby the transistor T12 is turned on, the relay coil C1 is interrupted, and the latch relay R1 is reset (S13). Then, it waits for a predetermined waiting time (for example, 10 ms) (S
14) To reset the second relay R2, M
The PU 10 outputs a reset signal from the output port P22 (S15), whereby the transistor T22 is turned on, the relay coil C2 is de-energized, and the latch relay R2 is reset (S16).

Thereafter, in the same manner as described above, standby, output of a reset signal from the output port, and reset of the latch relay are performed for the third latch relay R3 (S17, S17).
S18, S19) For the fourth latch relay R4, standby, output of a reset signal from the output port, and reset of the latch relay are executed (S20, S21, S2).
2) Normal monitoring and control are performed (S23).

In the operation shown in FIG. 3, the reset timing is shifted for each latch relay.
The output of the reset signal is time-dispersed, and the signal line SL
Large current can be prevented from flowing temporarily. For this reason, at the time of simultaneous recovery, it is possible to reduce the voltage drop of the signal line connecting the fire receiver and the terminal device.

In the operation shown in FIG. 3, the repeater T
, An operation of waiting for a time corresponding to the self address may be executed, and thereafter, the operation of step S11 may be executed. That is, after executing the operation of waiting for the time corresponding to the self address of the repeater T (the operation of step S2 shown in FIG. 2), the reset signals are output one by one from the output ports of the MPU 10, and the reset timing is shifted. , The latch relays may be sequentially reset.

FIG. 4 is a flowchart showing another operation of the repeater T in the above embodiment. The latch relays reset at the time of simultaneous recovery are not reset at the time of the simultaneous recovery instruction, but are set at the time of simultaneous recovery. An example is shown in which only the latch relay is reset at the time of the simultaneous recovery instruction.

When the simultaneous recovery command is sent from the fire receiver, status information indicating which latch relay is set is read from the RAM 23 and a timer is started (S31). If the latch relay R1 is set (S32), the MPU 10 outputs a reset signal from the output port 12 (S33), whereby the transistor T12 is turned on, the energization of the relay coil C1 is stopped, and the latch relay is turned off. R1 is reset and waits for a predetermined waiting time (for example, 10 ms) (S34),
If the second relay R2 is set (S35), M
The PU 10 outputs a reset signal from the output port 22 (S36), whereby the transistor T22 is turned on, the energization of the relay coil C2 is stopped, and the latch relay R2 is reset.

Thereafter, as described above, if the third latch relay R3 is set, standby, output of a reset signal from the output port, and reset of the latch relay are executed (S37, S38, S39), If the fourth latch relay R4 is set, standby, output of a reset signal from the output port, and reset of the latch relay are executed (S40, S41, S42), and among the state information stored in the RAM 23, Then, the information that the latch relays R1 to R4 are set is cleared (S43), and normal monitoring and control are performed (S44).

In the operation shown in FIG. 4, since only the latch relay set at the time of simultaneous recovery is reset, the reset signal is not output from the MPU 10 for the latch relay which is not set. Since the current is reduced and the current is dispersed due to the shift of the reset timing, the voltage drop of the signal line connecting the fire receiver and the terminal device at the time of simultaneous recovery can be reduced.

In each of the above embodiments, the signal line SL
Of the power supply line PL
Voltage drop can be reduced. That is, if the reset timings of the plurality of latch relays are simultaneous, the current flowing through the latch relay increases, and this current is the current flowing through the power supply line PL. As the number of relays increases, the voltage drop of the power supply line PL increases, and when a large number of latch relays are installed, the latch relay to be reset may not be reset. However, in the above embodiment, since the reset timing of the latch relay is shifted, the voltage drop of the power supply line PL can be reduced, and the reset failure of the latch relay does not occur even if a large number of latch relays are installed. It can respond to large-scale fire alarm equipment.

In the operation shown in FIG. 4, if the predetermined latch relay has been reset, it is immediately determined whether the next latch relay is set or reset without waiting for the waiting time. Is also good. Also,
About the latch relay set at the time of simultaneous recovery,
The reset may be performed at the same time when the simultaneous recovery command is issued. As a result, the reset signal is not output from the MPU 10 for the latch relay that is not set, so that the current flowing through the signal line SL is reduced by that much.

When the fire receiver sends the simultaneous recovery command to the repeater, the repeater sends the simultaneous recovery command to the repeater instead of executing the judgment to shift the reset of the latch relay. It may be shifted every time. That is, the simultaneous recovery command may be shifted by a predetermined time according to the address of the repeater, and the fire receiver may transmit the simultaneous recovery command. In this case, it is necessary to add the address of the repeater to the simultaneous recovery instruction, and to clarify to which repeater the simultaneous instruction is. In this case, since the restoration command is transmitted staggered for each repeater, it is not exactly a simultaneous restoration command. However, since the deviation time is short, for example, 160 ms,
In this specification, the above case is also expressed as a simultaneous restoration instruction.

That is, a fire alarm and a repeater are connected via a signal line, and the fire receiver calls the repeater by polling, collects predetermined information, and executes predetermined control. When the fire receiver sends the restoration command to the repeater, the fire receiver may send the simultaneous restoration command by shifting the simultaneous restoration command by a predetermined time according to the address of the repeater. In this case,
The predetermined time according to the address of the repeater may be different for each repeater, or may be different for each group when a plurality of terminal devices are divided into a plurality of groups.

In the above embodiments, the target for executing the simultaneous restoration command is the district bell. However, the case where the other controlled devices are simultaneously restored is the same as the case of the district bell.

In each of the above embodiments, the fire receiver sends a simultaneous recovery command. The fire receiver sends a simultaneous sounding command instead of the simultaneous recovery command.
Same as above. Further, in each of the above embodiments, the fire receiver sends the simultaneous recovery command, but instead of the fire receiver, another receiving unit such as a repeater sends the simultaneous recovery command and the simultaneous ringing command. You may.

[0044]

According to the present invention, a fire is generated via a signal line.
A receiver such as a receiver is connected to a repeater, and polling is performed.
Therefore, the receiving unit calls the repeater, and the predetermined information is
Collection and execution of predetermined control
At the time of simultaneous recovery or ringing,
Minimize voltage drop of signal line connecting receiver and repeater
It has the effect that it can be done.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a repeater T according to one embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the repeater T in the embodiment, and shows an example in which a waiting time according to a self-address of the repeater T is provided.

FIG. 3 is a flowchart showing another operation in the repeater T in the embodiment, and shows an example in which the reset timing is shifted for each latch relay.

FIG. 4 is a flowchart showing another operation in the repeater T in the above embodiment, and shows an example in which only a latch relay set at the time of simultaneous recovery is reset at the time of a simultaneous recovery instruction.

[Explanation of symbols]

T: repeater, 10: MPU, 11: ROM, 22: RAM for timer, R1 to R4: latch relay, C1 to C4: relay coil, P12, P22, P32, P42: reset signal output port, B1 to B4 ... District Bell.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G08B 17/00 G08B 23/00-31/00

Claims (5)

(57) [Claims] 1. A fire station, wherein a receiver such as a fire receiver is connected to a repeater via a signal line, the receiver calls the repeater by polling, collects predetermined information, and executes predetermined control. In the repeater of the alerting equipment, a latch relay is provided in the repeater, and when the repeater receives a simultaneous restoration command or a simultaneous ringing command from the receiving unit, the relayer repeats the simultaneous restoration command or the simultaneous ringing command. From the time when the terminal receives
Group when divided into groups
This is a predetermined time that differs for each group, and depends on the group of repeaters.
A relay unit for a fire alarm system, comprising: a control unit that waits for reset of the latch relay for a predetermined time, and starts resetting the latch relay after the predetermined time has elapsed. 2. A signal receiving unit such as a fire receiver and a repeater are connected via a signal line, and the polling unit calls the repeater by polling, collects predetermined information, and executes a predetermined control. In the repeater of the notification facility, a plurality of latch relays are provided in the repeater, and only the latch relay set when receiving the simultaneous recovery instruction is reset when receiving the simultaneous recovery instruction. A repeater for a fire alarm system. 3. A fire unit that connects a receiver such as a fire receiver and a repeater via a signal line, calls the repeater by polling, collects predetermined information, and executes predetermined control. In the receiving unit of the broadcast equipment, when the receiving unit sends a simultaneous restoration command or a simultaneous sounding command to the repeater, the simultaneous restoration command or the simultaneous sounding command is shifted for a predetermined time according to the address of the repeater. Wherein the receiving unit sends the simultaneous recovery command or the simultaneous sounding command. 4. The receiving section according to claim 3, wherein the predetermined time corresponding to the address of the repeater is a time different for each repeater. 5. The fire according to claim 3, wherein the plurality of terminal devices are divided into a plurality of groups, and the predetermined time according to the self-address of the repeater is different for each group. Receiving part of the notification equipment.