JP3294430B2 - Fire alarm system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire alarm system in which a repeater starts and returns a controlled device in response to a command from a fire receiver.

[0002]

2. Description of the Related Art For example, a repeater for smoke control equipment, in particular,
There are two types of repeaters for dampers used in the smoke exhaust outlet: repeaters with return and repeaters without return. The repeater with reset turns on a relay that activates a predetermined line when receiving an off command with reset from the fire receiver, and after a predetermined time, turns on another relay that returns the same line as the predetermined line. It is a repeater that performs the operation of attaching and removing. The repeater without return does not perform the above-mentioned off operation with return, but only turns on the relay when a command to turn on the predetermined relay is received from the fire receiver, and receives a fire command to turn off the predetermined relay. It is a repeater that simply turns off the relay when it is received from the machine.

[0003]

By the way, the repeater with return and the repeater without return in the above-mentioned conventional example are the same from the viewpoint of hardware in that they have an MPU, a ROM and a RAM. If the input port for function selection, which is one input port of the MPU, is connected to, for example, level L, it is a repeater with a return. If the input port for function selection is connected to, for example, level H, a repeater without return. It is. In other words, outwardly, the only difference is whether the function selection input port of the MUPU in the repeater is connected to the level H side or the level L side.
Also, it is connected to the level H side or the L side by a jumper line. Therefore, if the connection status of this jumper wire is mistaken when installing a repeater, a repeater with a return should be installed, but a repeater without a return would be installed, or conversely, a repeater without a return should be originally installed. , A repeater with return is installed.

In this case, a repeater with a return should be installed, but if a repeater without a return is installed, even if the fire receiver side sends an off command with a return to the repeater, the repeater returns to the original state. Cannot perform the off operation, and
Originally, a repeater without return should be installed, but if a repeater with return is installed, even if the fire receiver sends a command to activate or return the controlled device on the specified line to the repeater, May ignore the instruction.

That is, in the above-mentioned conventional example, if the repeater with return and the repeater without return are incorrectly installed, there is a problem that the repeater may execute an operation different from the initial operation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fire alarm system in which an unexpected operation of a repeater caused by erroneously installing a repeater with return and a repeater without return does not occur.

[0007]

According to the present invention, when the repeater receives an n-line ON command from the fire receiver to activate the controlled device on the n-th line, the controlled device on the n-th line is activated. Relay on means for turning on the nth relay is provided, and relay off means for turning off the nth relay when the repeater receives an n line off command for returning the controlled device on the nth line from the fire receiver. When the repeater receives from the fire receiver an n-line return-off command to return the controlled device of the n-th line to the off state, the n-th relay is turned off. There is provided a reset-off means for turning on an m-th relay for returning the control device.

[0008]

According to the present invention, when the repeater receives from the fire receiver an n-line ON command for activating the n-th controlled device, the n-th relay for activating the n-th controlled device is turned on. Relay on means for turning off the n-th relay when the repeater receives from the fire receiver an n-line off command for returning the controlled equipment on the n-th line. When the repeater receives from the fire receiver an n-line return-off command for returning the control device to the off state, the n-th relay is turned off, and after a predetermined time, the controlled device on the n-th line is returned. Since the return-off means for turning on the second relay is provided, an unexpected operation of the repeater which has conventionally occurred due to erroneous installation of the repeater with the return and the repeater without the return does not occur.

[0009]

FIG. 1 is a circuit diagram showing an embodiment of the present invention, in which a repeater C is used as a repeater without return.

In FIG. 1, power supply line PL and signal line S
The relay C is connected to the fire receiver RE via L. The coil of the first relay R1 is connected to the output port P1 of the repeater C via an inverter, and the second relay R2 is connected to the output port P2 of the repeater C via the inverter.
Is connected to the output port P3 of the repeater C via an inverter, and the coil of the third relay R3 is connected to the output port P4 of the repeater C via the inverter.
The coil of the relay R4 is connected. The controlled device M1 is connected to the control side of the relay R1 via the first line L1, and the second line L2 is connected to the control side of the relay R2.
The controlled device M2 is connected via a third line L3 to the control side of the relay R3, and the controlled device M3 is connected via the fourth line L4 to the control side of the relay R4. M4 is connected. In the repeater C, R
An OM 11, a RAM 12, a transmission / reception circuit 21, and an MPU (microprocessor) 22 are provided.

FIG. 2 is a circuit diagram showing the above embodiment.
FIG. 9 is a diagram when the repeater C is used as a repeater with return. The repeater C shown in FIG. 1 is the same as the repeater C shown in FIG.

In FIG. 2, the portion between the fire receiver RE and the coil side of the relays R1 to R4 is the same as in FIG. FIG. 2 differs from FIG. 1 in the following points. That is, the control side of the relay R1 is connected to the start signal input terminal of the controlled device M11 via the start line of the first line L11, and the control side of the relay R2 is connected to the control side of the relay R2 via the start line of the second line L12. A start signal input terminal of the control device M12 is connected, a return signal input terminal of the controlled device M11 is connected to a control side of the relay R3 via a return line of the first line L11, and a control signal of the relay R4 is connected to a control side of the relay R4. The return signal input terminal of the controlled device M12 is connected via the return line of the two lines L12.

By the way, the fire receiver RE is a repeater C
Then, an n-line ON command, an n-line OFF command, and an n-line return-with-OFF command are transmitted. Here, the above n is a positive integer.

The n-line ON command includes a one-line ON command for activating the controlled device M1 of the first line L1, a two-line ON command for activating the controlled device M2 of the second line L2, and a third line L3. And a four-line on command for activating the controlled device M4 of the fourth line L4.

The n-line off command includes a one-line off command for returning the controlled device M1 on the first line L1, a two-line off command for returning the controlled device M2 on the second line L2, and a third line L3. And a four-line off command for returning the controlled device M4 of the fourth line L4.

The n-line return-with-off command includes a one-line return-off command for returning the controlled device M11 of the first line L11 in FIG. 2 and a turn-off of the controlled device M12 of the second line L12 with return. There is an off command with one line return to be performed.

The transmission and reception circuit 21 is a circuit for transmitting and receiving commands and data to and from the fire receiver RE.
Is an area for storing programs related to the flowcharts shown in FIGS. 3 and 4, and the RAM 12 is a work area. The input port Pc is a port used as a function selection input port in the conventional example, and is fixed at L level (or may be fixed at H level in the above-described embodiment. , Any level, and in this case, the signal at the input port Pc may be ignored.)

The fire receiver RE includes an n-line on command for activating the controlled device on the n-th line, an n-line off command for returning the controlled device on the n-th line, and a controlled device on the n-th line. This is an example of sending an n-line return-off command to return to the repeater C.

The MPU 22 and the ROM 11 are examples of relay-on means for turning on an n-th relay for activating a controlled device on the n-th line when an n-line on command is received from the fire receiver. This is an example of relay off means for turning off the nth relay when receiving an n-line off command from the receiver, and turning off the n-th relay when receiving an off command with n-line return from the fire receiver. ,
After this predetermined time, the controlled device on the n-th line is restored m
It is an example of a reset-off means for turning on a relay.
Further, the MPU 22 and the ROM 11 turn off the n-th relay when the n-line off command and the n-line on command are simultaneously received from the fire receiver. It is an example of a reset-off means for turning on an m-th relay for returning a terminal device.

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

FIG. 3 is a flow chart showing the operation of the repeater C in the above embodiment, in which an off operation with n-line return is executed by using an off command with n-line return.

First, if an n-line ON command has been received from the fire receiver RE (S1), the n-th relay is turned on (S2), and an n-line OFF command has been received from the fire receiver RE. If (S3), the n-th relay is turned off (S4). In this case, n is a value of 1 to 4. Therefore, the above operation can realize a conventional repeater without return. That is, as shown in FIG. 1, the controlled devices M1, M2, M3, and M4 are connected to the four lines L1, L2, L3, and L4, respectively, and each can be activated only or restored.

When the off command with n-line return is received from the fire receiver RE (S5), first, the n-th relay is turned off (S6), and one second after this (S7), the n-th relay is turned off. Turn on the m-th relay different from
8). For example, in FIG. 2, the controlled device M11 is activated by turning off the first relay R1, and after one second, the controlled device M11 is returned by turning on the third relay R3, and the conventional recovery is performed. It is possible to realize an attached repeater.

In the above embodiment, a repeater without return can be realized by using exactly the same repeater C, and a repeater with return can be realized. In this case, there is no need to perform an operation such as selecting the level of the function selection input port using a jumper wire as in the conventional example, and therefore, the repeater with return and the repeater without return are incorrectly installed. No unexpected operation of the repeater occurs.

FIG. 4 is a flowchart showing another operation of the repeater C in the above-described embodiment, in which an off operation with n-line return is executed by using an n-line off command and an n-line on command. It is.

First, the command received from the fire receiver RE is temporarily stored in the RAM 12 (S10). If the command stored in the RAM 12 is not the n-line off command but the n-line on command (S11, S12), the n-th relay is turned on (S13), and if the command received from the fire receiver RE is only the n-line off command (S11, S1)
4) The n-th relay is turned off (S15). In this case, n is a value of 1 to 4. Therefore, the above operation can realize a conventional repeater without return.

On the other hand, in FIG. 4, the instructions stored in the RAM 12 are an n-line off instruction and an n-line on instruction (S11, S12).
, The n-line off command and the n-line on command are received at the same time. In this case, the n-th relay is turned off (S1).
6) After one second from this (S17), the m-th relay different from the n-th relay is turned on (S18). For example, in FIG. 2, the controlled device M11 is activated by turning on the first relay R1, and after one second, the controlled device M11 is returned by turning on the third relay R3, and the conventional return is performed. It is possible to realize an attached repeater.

Also in the embodiment shown in FIG. 4, a repeater without return can be realized by using the same repeater C, and a repeater with return can be realized. In this case, there is no need to perform an operation such as selecting the level of the function selection input port using a jumper wire as in the conventional example, and therefore, the repeater with return and the repeater without return are incorrectly installed. No unexpected operation of the repeater occurs.

A specific example of the one-line ON command transmitted from the fire receiver RE is constituted by a predetermined number of bits and four bits, and the predetermined number of bits indicates that the ON command is issued. Of only the bit 0 is set to "1"("0001"). Therefore, a specific example of the two-line ON instruction is the one in which only bit 1 of the four bits is set to "1"(" 0010 "). Similarly, a specific example of the three-line ON instruction and the four-line ON instruction is one in which only bit 2 of the four bits is set to" 1 "(" 0100 "). Only 3 is "1"("1000"). In this case, in a specific example of the one-line off command, the predetermined number of bits indicate that the command is an off command, and the four bits are "0".
001 ”and then“ 0 ”
000 ", this" 0000 "is a one line off command. Therefore, a specific example of the two line off command is:
Under the precondition that the above four bits are "0010", if the value subsequently becomes "0000", this "00"
"00" is a two-line off command. The three line off instruction and the four line off instruction are the same as above.

The four bits are "0000", "0"
001 "," 0010 ", and" 0011 ",
It is assumed that the command is a one-line ON command, a two-line ON command, a three-line ON command, and a four-line ON command.
When it is "1", it may be a one-line on instruction, a two-line on instruction, a three-line on instruction, and a four-line on instruction, respectively. In this way, it is not necessary to use the state immediately before 4 bits as a criterion as described above. Further, in the off instruction with one line return, the above four bits are set to “100”.
0 ", and the one-line return-with-off command may be set to be the case where the above four bits are" 1001 ".

Although the number of relays and lines is four in FIG. 1, the number of relays and lines may be set to a number other than four. In FIG. 2, the number of relays and lines is two. But,
The number of relays and lines may be set to a number other than two. In addition, while waiting for one second in steps S7 and S17, this waiting time may be set to a time other than one second.

In the above embodiment, the relays R1 to R1
R4 always supplies current to each coil of relays R1 to R4 and keeps output ports P1 to P4 of MPU 22 in order to keep the controlled devices M1 to M4 connected thereto activated.
It is necessary to keep the current flowing constantly. In order to reduce this current, a latch relay may be used as the relays R1 to R4. In this case, for example, a pulse is output from the output port P1 to turn on the relay R1, and a pulse is output from the output port P1 to turn off the relay R1, but a switching signal is output from another output port. The pulse output from output port P1 when this switching signal is H, for example, sets the latch relay for R1, and the pulse output from output port P1 when this switching signal is L, for example, is R1.
What is necessary is just to reset the latch relay concerning.

[0033]

According to the present invention, there is an effect that unexpected operation of the repeater does not occur due to erroneous installation of the repeater with return and the repeater without return.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing one embodiment of the present invention, in which a repeater C is used as a repeater without return.

FIG. 2 is a circuit diagram showing the above embodiment, in which a repeater C is used as a return repeater.

FIG. 3 is a flowchart showing an operation of the repeater C in the embodiment, in which an off operation with n-line return is executed by using an off-command with n-line return.

FIG. 4 is a flowchart showing another operation of the repeater C in the embodiment, in which an n-line return and an n-line return instruction is used to execute an n-line return-with-off operation.

[Explanation of symbols]

 RE: fire receiver, C: repeater, 11: ROM, 12: RAM, 22: MPU, R1: first relay, R2: second relay, R3: third relay, R4: fourth relay L1 first line, L2 second line, L3 third line, L4 fourth line, L11 first line, L12 second line.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-193540 (JP, A) JP-A-3-154998 (JP, A) JP-A-4-346199 (JP, A) JP-A-5-1993 325060 (JP, A) JP-A-4-52897 (JP, A) JP-A-61-33188 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G08B 23/00 530 G08B 17/00 G08B 25/00 520

Claims (2)

(57) [Claims] 1. An n-line on command for activating a controlled device on an n-th line, an n-line off command for returning a controlled device on an n-th line, and n for resetting a controlled device on an n-th line A fire alarming device that sends an off command with line return to the repeater by the fire receiver, and activates the controlled device of the n-th line when receiving the n-line on command from the fire receiver. Relay-on means for turning on the n-th relay; relay-off means for turning off the n-th relay when receiving the n-line off command from the fire receiver; with the n-line return from the fire receiver When an off command is received, the above n
The relay of the nth is turned off, and after the predetermined time, the nth
And a return off means for turning on an mth relay for returning a controlled device of the line. 2. A fire alarm system in which a fire receiver sends an n-line on command for activating a controlled device on an n-th line and an n-line off command for returning the controlled device on an n-th line to a repeater. Relay-on means for turning on an n-th relay for activating the controlled device on the n-th line when receiving the n-line on command from the fire receiver; and turning off the n-line from the fire receiver. Relay-off means for turning off the n-th relay when a command is received; and turning off the n-th relay when the n-line off command and the n-line on command are simultaneously received from the fire receiver. And a resetting off means for turning on the m-th relay for returning the controlled terminal equipment of the n-th line after a predetermined time from the turning-off.