JPH07272169A - Repeater and reception part of fire alarm equipment - Google Patents

Abstract

PURPOSE:To reduce the voltage drop of a signal wire connecting the receiver and the repeater of a fire signal receiver by waiting the reset of a latch relay by a prescribed time corresponding to the own address of the repeater from the time when the repeater receives a simultaneous restoration instruction, etc., and starting reset after the prescribed time. CONSTITUTION:When the simultaneous restoration instruction is sent from the fire receiver, a timer is started through the use of RAM 22 so as to wait by the time corresponding to the own address of the repeater. Then, after the waiting time, MPU 10 outputs a reset signal from output ports P12, P22, P32 and P42. This turns on transistors T12, T22, T32 and T42 to prohibit relay coils C1 to C4 from energizing and to reset latch relays R1 to R4. Thereby, the timing of outputting the reset signal by MPU becomes different from the other repeaters so that the output of the reset signal by MPU is distributed in time so as to prevent the temporary flowing of large current through the signal cable SL.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiver such as a fire alarm receiver and a repeater connected via a signal line, and the receiver calls the repeater by polling to collect predetermined information and predetermined information. The present invention relates to a repeater and a receiver of a fire alarm facility that executes the control of.

[0002]

2. Description of the Related Art In a conventional fire alarm system, a fire receiver and a plurality of repeaters are connected by a signal line, and different addresses are assigned to the plurality of repeaters, respectively, and the fire receiver is transmitted through this address. However, there is known a method (so-called polling method) of collecting information from a specific repeater and sending a control command to the specific repeater.

The repeater has a memory for storing its type, address, etc., and an MPU for controlling the entire repeater.
(Microprocessor) is provided.

[0004]

SUMMARY OF THE INVENTION In the above conventional example,
When the fire receiver sends a simultaneous recovery command, all the repeaters simultaneously initialize. This initial setting includes, for example, peripheral confirmation such as resetting a starting circuit for starting the controlled device.

In this case, all the relays perform the initialization at the same time and all the fire detectors connected to the relays are initialized at the same time, so that the power consumption of the fire receiver for supplying power to the relays is reduced. The problem is that the larger the number of repeaters connected to the fire receiver, the larger the current flowing in the signal line, and the greater the voltage drop of the signal line, which may cause transmission failure. There is.

In order for the repeater to control the controlled equipment such as smoke proof equipment, a latch relay is provided in advance in the repeater, the controlled equipment is connected to this latch relay, and the latch relay is set and reset. By doing so, the controlled device is activated and restored. Specifically, in order to restore the controlled device, a reset signal is output from the output port of the MPU, and the latch relay is reset by this reset signal. In this case, the reset signal from the MPU is a signal of the same system as the signal line, and the signal that activates 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 photo coupler is provided between the reset signal from the MPU and the signal for resetting the latch relay. In order to drive this photocoupler, for example, a current of 30 mA needs to flow, that is, a reset pulse of 30 mA needs to flow from the output port of the MPU, and when resetting a large number of latch relays at the same time, the reset pulse is reset. The more latch relays that should be used, the greater the voltage drop on the signal line.

The above problem occurs not only at the time of simultaneous restoration but also at the time of simultaneous ringing.

The present invention provides a repeater of a fire alarm system capable of reducing the voltage drop of a signal line connecting a receiver and a repeater such as a fire receiver at the time of simultaneous recovery or ringing. The purpose is.

The present invention also provides a receiver of a fire alarm system capable of reducing the voltage drop of a signal line connecting a receiver such as a fire receiver and a repeater at the time of simultaneous restoration or ringing. The purpose is to do.

[0010]

According to the present invention, a receiver such as a fire receiver is connected to a repeater via a signal line, and the receiver calls the repeater by polling to collect predetermined information and to determine predetermined information. In the relay of the fire alarm equipment that executes the control of the relay, the relay is equipped with a latch relay, and when the relay recovery command or the ringing command is received from the receiving unit, the relay recovery command or the ringing command is relayed. The device waits for the reset of the latch relay for a predetermined time corresponding to the self-address of the repeater from the time when the device receives the signal, and then starts the reset of the latch relay after the predetermined time has elapsed.

[0011]

In the present invention, the repeater is provided with the latch relay,
When the repeater receives a broadcast recovery command or a ringing command from the receiver, the relay relay receives the broadcast recovery command or the ringing command for a predetermined time according to the self-address of the repeater. The system waits for a reset and starts the reset of the latch relay after a lapse of a predetermined time.Therefore, at the time of simultaneous restoration or simultaneous ringing, the voltage drop of the signal line connecting the receiving part such as the fire receiver and the repeater can be reduced. can do.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the polling selecting method used in the present invention will be briefly described. In the polling selecting method, the terminal devices connected to the 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 system polling and point polling. In system polling, the response timing of terminal devices differs for each group, and for point polling, the response timing differs for each terminal device. If there is no response by system polling, the state of all terminal devices has not changed at all, and if there is a response by system polling, the state of one of the terminal devices belonging to the group that made the response has changed. , Point polling the terminal devices belonging to the group one by one.

FIG. 1 is a repeater T which is an embodiment of the present invention.
It is a block diagram showing.

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

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

The RAM 22 is a memory for the timer,
It is for counting the waiting time according to the self-address of the repeater T, and it is an output port P12 of the MPU10.
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 state information such as which one of the latch relays R1 to R4 is set.

The latch relay R1 includes 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 includes a relay coil C3, switches S31 and S32, and transistors T31 and T32. The latch relay R4 includes a relay coil C4, switches S41 and S42, and transistors T41 and T42. In the latch relays R1 to R4, the latching portion is omitted in FIG.

The transistor T11 is turned on when a pulsed set signal is received from the output port P11 of the MPU 10, energizes the relay coil C1, and latches the relay R1.
To set switch S1
1 and S12 are switched to the set terminals s and s, and the district bell B1 rings. The transistor T12 is
It is turned on when a pulsed reset signal is received from the output port P12 of the MPU 10, blocks the 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 terminal t,
Then, the route for ringing the district bell B1 is cut off.

The transistor T21 turns on when it receives a pulse-shaped set signal from the output port P21 of the MPU 10, energizes the relay coil C2, and latches the relay R2.
To set switch S2.
1 and S22 are switched to the set terminals s and s, and the district bell B2 rings. The transistor T22 is
It is turned on when a pulsed reset signal is received from the output port P22 of the MPU 10, blocks the energization of the relay coil C2, and resets the latch relay R2.
As a result, the switches S21 and S22 are connected to the test terminal t,
Then, the route for ringing the district bell B2 is cut off.

The transistor T31 turns on when it receives a pulse-shaped set signal from the output port P31 of the MPU 10, energizes the relay coil C3, and latches the relay R3.
To set switch S3.
1 and S32 are switched to the set terminals s and s, and the district bell B3 rings. The transistor T32 is
It turns on when a pulsed reset signal is received from the output port P32 of the MPU 10, blocks the 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 terminal t,
Then, the route for ringing the district bell B3 is cut off.

The transistor T41 turns on when it receives a pulsed set signal from the output port P41 of the MPU 10, energizes the relay coil C4, and latches the relay R4.
To set switch S4.
1, S42 is switched to the set terminals s, s, and the district bell B4 rings. The transistor T42 is
It is turned on when a pulsed reset signal is received from the output port P42 of the MPU 10 to prevent energization of the relay coil C4 and reset the latch relay R4.
As a result, the switches S41 and S42 are connected to the test terminal t,
It is switched to t and the route for ringing the district bell B4 is cut off.

When the relay T is turned on,
After this power is turned on, the reset of each latch relay R1, R2, R3, R4 is waited for a predetermined time according to the self-address of the repeater T, and after the predetermined time has elapsed, the reset of the latch relays R1, R2, R3, R4 Is about to start. 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 the 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 repeater 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 deviated from each other.

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

When a simultaneous recovery command is sent from the fire receiver, the timer is started using the RAM 22 (S
1) Wait for a time corresponding to the self-address of the repeater T (S2). As the time corresponding to the self-address of the repeater T, different times 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. In the above, different time may be adopted for each group.

If many repeaters are connected and waiting for a different time for each repeater, the repeater T
Is the nth address, and the waiting time from one repeater to the next repeater is 160 ms, for example, the total waiting time of the repeater T is 160 ms × (n−1).
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 relay device T starts measuring time according to the group to which the relay device T belongs. To do. The waiting time from one group to the next is 16
If 0 ms is set and 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 an output port P12, P22, P32, P42
To output a reset signal (S3). by this,
Since the transistors T12, T22, T32, and T42 are turned on (S4), the relay coils C1, C2, C3, and C4.
Is blocked from energizing (S5), and the latch relays R1, R2,
R3 and R4 are reset (S6). After that, normal monitoring and control are performed (S7).

In the above embodiment, the MPU waits for the time corresponding to the self-address of the repeater T (S2).
The output timing of the reset signal differs from that of 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. Therefore, at the time of simultaneous restoration, it is possible to reduce the voltage drop of the signal line connecting the fire receiver and the terminal device.

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

When a simultaneous recovery command is sent from the fire receiver, the timer is started using the RAM 22 (S
11) First, a reset signal is first output from the output port P12 of the MPU 10 (S12), whereby the transistor T12 is turned on, the relay coil C1 is blocked from being energized, and the latch relay R1 is reset (S13). Then, wait for a predetermined waiting time (for example, 10 ms) (S
14) M to reset the second relay R2
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 blocked from being energized, and the latch relay R2 is reset (S16).

Thereafter, similarly to the above, the standby, the reset signal output from the output port, and the reset of the latch relay are executed for the third latch relay R3 (S17,
S18, S19) Standby, reset signal output from the output port, and reset of the latch relay are executed for the fourth latch relay R4 (S20, S21, S2).
2) Normal monitoring and control are performed (S23).

In the operation shown in FIG. 3, since the reset timing is shifted for each latch relay, the MPU 10
Output of the reset signal of the signal line SL
It is possible to prevent a large current from flowing temporarily. Therefore, at the time of simultaneous restoration, 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
It is also possible to execute the operation of waiting for a time corresponding to its own address, and then execute the operation of step S11. That is, after performing the operation of waiting for the time corresponding to the self-address of the repeater T (operation of step S2 shown in FIG. 2), the reset signal is output one by one from the output port of the MPU 10 while shifting the reset timing. The latch relays may be sequentially reset.

FIG. 4 is a flow chart showing another operation in the repeater T in the above-mentioned embodiment. Latch relays reset at the time of simultaneous restoration are set at the time of simultaneous restoration without being reset at the time of simultaneous restoration command. In this example, only the latch relays that have been reset are reset at the time of the simultaneous recovery command.

When the simultaneous recovery command is sent from the fire receiver, the status information indicating which latch relay is set is read from the RAM 23 and the 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 and the relay coil C1 is blocked from being energized. R1 is reset and waits for a predetermined waiting time (for example, 10 ms) (S34), 2
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 relay coil C2 is blocked from being energized, and the latch relay R2 is reset.

Thereafter, similarly to the above, if the third latch relay R3 is set, standby, reset signal output from the output port, and reset of the latch relay are executed (S37, S38, S39), If the fourth latch relay R4 is set, standby, reset signal output 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, Information indicating 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 restoration is reset, the reset signal is not output from the MPU 10 for the latch relay not set, and accordingly, the signal flows to the signal line SL. Since the current is reduced and the reset timing is shifted, the current is dispersed, and it is possible to reduce the voltage drop of the signal line connecting the fire receiver and the terminal device at the time of simultaneous recovery.

Further, in each of the above embodiments, the signal line SL
In addition to reducing the voltage drop of the
The voltage drop can be reduced. That is, if the reset timings of a plurality of latch relays are the same, a large amount of current flows through the latch relays, and since this current is a current flowing through the power supply line PL, the voltage of the power supply line PL also drops, and the latches that reset at the same time. 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 relays to be reset may not be reset. However, in the above-described embodiment, since the reset timing of the latch relay is shifted, it is possible to reduce the voltage drop of the power supply line PL, and even if a large number of latch relays are installed, the reset failure of the latch relay does not occur. Can cope with large-scale fire alarm equipment.

In the operation of FIG. 4, if the predetermined latch relay is reset, it is possible to immediately judge whether the next latch relay is set or reset without waiting for the waiting time. Good. Also,
About the latch relay set at the time of simultaneous restoration,
You may make it reset simultaneously at the time of a simultaneous restoration command. As a result, the reset signal is not output from the MPU 10 for the latch relay that is not set, and the current flowing through the signal line SL is reduced by that amount.

Further, when the fire receiver sends the simultaneous recovery command to the repeater, the timing at which the receiver side sends the simultaneous recovery command is set at the repeater side, instead of the relay device executing the judgment to shift the reset of the latch relay. You may make it shift every time. In other words, the simultaneous recovery command may be shifted by a predetermined time period 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 command and clarify to which repeater the simultaneous command belongs. In this case, since the restoration command is sent after being shifted for each repeater, it is not a simultaneous restoration command accurately, but the shift time is short, for example, 160 ms.
In the present specification, the above case is also expressed as a simultaneous restoration instruction.

That is, in a fire alarm facility in which a fire receiver and a repeater are connected via a signal line, 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 restoration command by shifting the simultaneous restoration command for 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 each of the above embodiments, the target for executing the simultaneous restoration command is the district bell, but the simultaneous restoration of the controlled devices other than this is similar to the case of the district bell.

In each of the above-mentioned embodiments, the fire receiver sends the simultaneous restoration command. However, when the fire receiver sends the simultaneous ringing command instead of the simultaneous restoration command,
The same as above. Further, in each of the above-mentioned embodiments, the fire receiver sends the simultaneous recovery command, but instead of the fire receiver, another receiving unit such as a repeater may send the simultaneous recovery command and the simultaneous ringing command. May be.

[0044]

According to the present invention, it is possible to reduce the voltage drop of the signal line connecting the receiving unit such as the fire receiver and the terminal device when the power is turned on.

[Brief description of drawings]

FIG. 1 is a block diagram showing a repeater T that is an embodiment of the present invention.

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

FIG. 3 is a flowchart showing another operation of the repeater T in the above embodiment, showing 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, showing an example in which only the latch relays set at the time of simultaneous restoration are reset at the time of simultaneous restoration command.

[Explanation of symbols]

T ... Repeater, 10 ... MPU, 11 ... ROM, 22 ... Timer RAM, R1 to R4 ... Latch relay, C1 to C4 ... Relay coil, P12, P22, P32, P42 ... Reset signal output port, B1 to B4 … District Bell.

Claims (9)

[Claims] 1. A fire in which a receiver such as a fire receiver is connected to a repeater via a signal line, and the receiver calls the repeater by polling to collect predetermined information and perform predetermined control. In the repeater of the notification equipment, a latch relay is provided on the repeater, and when the relay unit receives the simultaneous restoration command or the simultaneous ringing command from the receiving unit, the relaying the simultaneous recovery command or the simultaneous ringing command is performed. From the time of reception by the relay device, the reset of the latch relay is waited for a predetermined time according to the self-address of the relay device, and after the predetermined time has elapsed, the reset of the latch relay is started. Repeater for fire alarm equipment. 2. The repeater of a fire alarm system according to claim 1, wherein the predetermined time according to the self-address of the repeater is different for each repeater. 3. The predetermined time according to claim 1, wherein the predetermined time corresponding to the self-address of the repeater is a different time for each group when the plurality of terminal devices are divided into a plurality of groups. A repeater for the fire alarm system. 4. The relay according to claim 1, wherein a plurality of the latch relays are provided in the repeater, and a reset timing when the simultaneous recovery command or the simultaneous ringing command is received is the relay. A repeater for fire alarm equipment, characterized in that a plurality of latch relays inside the device are offset from each other. 5. A fire in which a receiver such as a fire receiver is connected to a repeater via a signal line, and the receiver calls the repeater by polling to collect predetermined information and execute predetermined control. In the repeater of the notification equipment, a plurality of the latch relays are provided in the repeater, and the reset timing when receiving the simultaneous restoration command or the simultaneous ringing command is between the plurality of latch relays in the repeater. , A fire alarm repeater, which is offset from each other. 6. A fire in which a receiver such as a fire receiver is connected to a repeater via a signal line, and the receiver calls the repeater by polling to collect predetermined information and execute predetermined control. In the repeater of the notification equipment, a plurality of latch relays are provided in the repeater, and only the above-mentioned latch relay set when receiving the simultaneous restoration command is reset when the simultaneous restoration command is received. A repeater for fire alarm equipment. 7. A fire in which a receiver such as a fire receiver is connected to a repeater via a signal line, and the receiver calls the repeater by polling to collect predetermined information and perform predetermined control. In the receiver of the notification equipment, when the receiver sends a simultaneous recovery command or a simultaneous ringing command to the repeater, it shifts the simultaneous recovery command or the simultaneous ringing command for a predetermined time according to the address of the repeater. The receiving unit of the fire alarm equipment is characterized in that the receiving unit sends the simultaneous restoration command or the simultaneous ringing command. 8. The receiving unit of the fire alarm equipment according to claim 7, wherein the predetermined time corresponding to the address of the repeater is different for each repeater. 9. The fire according to claim 7, wherein the plurality of terminal devices are divided into a plurality of groups, and the predetermined time corresponding to the self-address of the repeater is different for each group. Receiver of notification equipment.