JPH0546158Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention connects multiple relay panels to a receiver via a transmission path, and connects a sensor etc. to each relay panel to independently monitor disaster prevention. The present invention relates to a distributed disaster prevention monitoring device, and particularly to a disaster prevention monitoring device that enables telephone communication between a receiver, a relay board, and a transmitter.

[Prior art] Conventionally, in this type of distributed disaster prevention monitoring equipment, multiple relay boards installed on each floor were connected to the receiver in a loop via a transmission path, and a Disaster prevention terminals such as fire detectors and transmitters are connected to the signal line.

In addition, in order to enable communication between the receiver and the transmitter installed at the site in the event of a fire outbreak or inspection, the receiver and transmitter are equipped with a communication means (a telephone jack for connecting a telephone when making a call). is installed, and this communication means is connected via a communication line via a relay board.

By the way, in the case of such distributed disaster prevention monitoring equipment, it is necessary to perform an operation test of the disaster prevention terminals such as detectors and transmitters connected to the relay board at the time of system installation or during post-installation inspection. , since transmitting information between the relay board and the receiver during the operation test of the disaster prevention terminal may cause erroneous control or false alarms, the inventors of the present application have decided to transmit information between the relay board and the receiver during the operation test. We are proposing a device that can inspect and repair disaster prevention terminals without disconnecting them from the transmission line of the machine and shutting down the entire system.

[Problems to be solved by the invention] However, in the case of disaster prevention monitoring equipment in which the repeater board is separated from the transmission path of the receiver during operation tests of such terminals, the repeater board separated from the receiver and the on-site There has been a new need for communication between the transmitter and the transmitter, and the conventional two-party call between the receiver and the on-site transmitter has been changed from the conventional two-party call between the receiver and the on-site transmitter to the three-party call including the relay board, i.e.,
Call selection is required between the receiver and the on-site transmitter, between the receiver and the repeater board, and between the repeater board and the on-site transmitter.Moreover, in a steady monitoring state where the repeater board is connected to the receiver's transmission path, the receiver and the on-site When the relay board is disconnected from the transmission line between the transmitters and the receiver, it is required to switch to a state where communication is possible between the relay board and the field transmitter.

The present invention was developed in view of the conventional situation, and is a disaster prevention monitoring device that allows for more appropriate telephone communication when disconnecting the repeater board from the transmission path of the receiver during the operation test of the disaster prevention terminal. The purpose is to provide.

[Means for solving the problem] First, the present invention provides a method for transmitting signals to a receiver via a transmission path.
Alternatively, a plurality of relay boards are connected, and a disaster prevention terminal including a transmitter is connected to the relay board via a signal line, and a communication means is provided in each of the receivers, relay boards, and transmitters, and a communication device is connected to the relay board via a communication line. Targets connected distributed disaster prevention monitoring equipment.

In the present invention regarding such a disaster prevention monitoring device, the relay board includes a switching means for switching the communication means of the relay board to a state in which communication is possible with respect to the communication means of the receiver or transmitter, and the relay board A control means is provided for switching the switching means to a state in which communication between the repeater board and the communication means of the transmitter is enabled when the transmitter is disconnected from the transmission path from the receiver.

[Function] In the disaster prevention monitoring device of the present invention having such a configuration, in the steady monitoring state, communication is possible between the receiver and the communication means of the field transmitter via the switching means of the repeater board. In the event of a fire, etc., the receiver can be called by inserting the phone into the telephone jack of the transmitter and an emergency call can be made. If the repeater board is disconnected from the transmission path of the receiver, this transmission path disconnection is detected and the switching means of the repeater board switches to a state where communication is possible between the repeater board and the communication means of the on-site transmitter, and the on-site call is made. By connecting a telephone on the machine side, it is possible to call the relay board and make calls for operational tests and the like.

Furthermore, when the repeater is returned to the transmission path from the receiver upon completion of the operation test, the call connection state is automatically restored to a state in which calls can be made between the receiver and the on-site transmitter.

[Example] FIG. 1 is an explanatory diagram showing the system configuration of a disaster prevention monitoring device of the present invention.

In FIG. 1, 1 is a receiver, and receiver 1
A plurality of relay panels 2-1 to 2-5 are connected in a loop via a transmission line 3.

Relay boards 2-1 to 2-5 are installed, for example, on each floor, and as shown in FIG. A terminal 6 is connected, and the disaster prevention terminal 6 is composed of a sensor, a fire door, a smoke prevention damper, and a transmitter 7 shown in FIG.

The relay board 2 sequentially calls the repeaters 5 using a polling method to collect detection information of the fire prevention terminals 6 or to control the disaster prevention terminals.

Referring again to FIG. 1, for example, between the receiver 1 and the relay boards 2-1 to 2-5, the relay board 2-1
If a fire is detected in Disaster prevention terminal control information is transmitted to transmission line 3.
The relay board 2-1 decodes the control information from the receiver 1 and controls and drives the necessary disaster prevention terminals.

Furthermore, even if the function of receiver 1 is lost, relay board 2-1
2-5 can independently centrally monitor and control their own disaster prevention terminals.

In such a distributed disaster prevention monitoring device, receiver 1, relay boards 2-1 to 2-5, and even relay board 2
A telephone jack 10 to which a telephone 9 can be connected via a plug 8 is provided on each of the transmitters 7 representatively shown in FIG.
is connected to the telephone jack 10 of the transmitter 7 by a communication line through communication means of the receiver 1 and repeaters 2-1 to 2-5, which will be explained later.

FIG. 2 shows an embodiment of the relay board shown in FIG.

In Fig. 2, a transmission line 3 connecting the receiver and other relay boards is input/output connected to the relay board 2, and the input side transmission line is shown as 3a, and the output side transmission line is shown as 3b. .

The relay panel 2 is provided with a CPU 12 as a control unit, and a signal line 4 is drawn out to the CPU 12 through a transmission interface 34 to a guarded area.
A disaster prevention terminal 6 including a transmitter 7 shown in FIG. 1 is connected to the signal line 4 via a repeater 5.

A changeover switch 14 is provided on the input side transmission line 3a side with respect to the relay board 2, and the output side transmission line 3b side is provided with a changeover switch 14.
A changeover switch 16 is provided on the side. The input side and output side transmission lines 3a, 3b are connected to a common terminal of the changeover switches 14, 16. Changeover switch 1
4 and 16 have two switching positions a and b, and a bypass line 18 is connected to the switching position b side.

Switching position a of the selector switch 14 provided on the input side
is connected to the input port 11 of the CPU 12, and when the changeover switch 14 is switched to the changeover position a, the transmission data from the receiver 1 or other relay board sent from the input side transmission line 3a is sent from the input port 11. can be imported. In addition, the changeover switch 14
The output side of switching position a is input to one of the AND gates 20, and the other inverting input of the AND gate is connected to the control port C1 of the CPU 12.
When the CPU 12 transmits data to the receiver 1, the control port C1 is set to H level and
The gate is set to a prohibited state, and transmission data from the receiver 1 or other relay board sent from the input side transmission path 3a is prohibited. When the CPU 12 does not perform data transmission, the control port C1 becomes L level, and the AND gate 20 is placed in an allowable state.

The output of the AND gate 20 is input to one side of the OR gate 22, and the other side of the OR gate 22 is input to the CPU 12.
The output port O1 of is connected. When transmitting data to the receiver 1, the CPU 12 sets the control port C1 to H level to disable the AND gate 20, and in this state, the output porter O1
Transmission data is output to the OR gate 22.

The output of OR gate 22 is input to decoder 24. The decoder 24 is the control port C of the CPU 12
2. That is, when the CPU 12 does not transmit data to the receiver 1, the control port C2 becomes L level, and the decoder 24 directly receives the data transmitted from the receiver 1 or another relay board via the OR gate 22. Output.
On the other hand, when the CPU 12 outputs transmission data, the control port C2 generates an H level output, the decoder 24 becomes activated, and modulates the transmission bits of the transmission data output via the OR gate 22. Output.

The operation of the CPU 12 is monitored by a watchdog circuit 26, and if the CPU 12 goes out of control, pulse output at a constant cycle to the watchdog circuit 26 will no longer be performed.
2 runaway is detected.

Furthermore, a decoder 24 and an output side selector switch 16
A fault detection circuit 28 is provided which has an input connection between the CPU 12 and the fault detection circuit 28 which detects a short circuit or disconnection from the line voltage on the output transmission line 3b side
We are trying to notify you.

Furthermore, a maintenance switch 30 is connected to the input port I2 of the CPU 12, which instructs control to disconnect the CPU 12 from the transmission path 3 when the disaster prevention terminal 6 is inspected or replaced or repaired. Further, a switching control circuit 32 is provided for the switching switches 14 and 16, and the switching control circuit 32 uses a control signal from the control port C3 of the CPU 12 or a detection output when the watchdog circuit 26 detects runaway to switch the switching switches 14, 16. 16 is switched from the switching position a side to the b side to disconnect the relay board 2 from the transmission line 3.

FIG. 3 is an explanatory diagram showing an example of communication connection between the receiver 1 in the embodiment shown in FIG. 1, the relay board 2-2, and the transmitter 7 connected to the relay board 2-2 by a signal line. It is.

In FIG. 3, the receiver 1 is provided with a telephone jack 10-1 and a calling buzzer 36 as communication means, and when a telephone call is made by the calling buzzer 36, the telephone 9 is connected to the telephone jack 10-1 by a plug 8.
You can make phone calls by connecting to .

The relay board 2-2 has a telephone jack 10- for the receiver.
2. A terminal telephone jack 10-3, a call buzzer 38, and a call changeover switch 40 are provided, and the call changeover switch 40 is switched under the control of the CPU 12 as a control unit based on the switch output of the maintenance switch 30. That is, the maintenance switch 30
In the steady monitoring state where CPU12 is turned off,
The call changeover switch 40 is switched to side a shown by a solid line, and when the maintenance switch 30 is turned on for inspection, repair, or replacement of the terminal, the control section 12 switches the call changeover switch 40 to side b shown by a broken line.

Furthermore, the transmitter 7 is provided with a telephone jack 10-4.

The communication line 4 is connected between the receiver and the relay board 2-2.
2-1, and relay board 2-2 and transmitter 7
The communication line 42-2 is connected to the communication line 42-2.

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

Now, as shown in FIG. 1, when testing the operation of the sensors etc. connected to the relay panel 2-22, the maintenance switch 30 provided on the relay panel 2-2 is turned on.

When the maintenance switch 30 is turned on, the CPU 12 receives the control signal from the maintenance switch 30 and outputs a control output from the control port C3 to the switching control circuit 32, as shown in FIG.
2 switches the changeover switches 14 and 16 from the previous switching position a side to the b side as shown by the broken line, connects the input side transmission line 3a to the output side transmission line 3b via the bypass line 18, and thereby Then, disconnect the repeater board 2-2 from the transmission line 3 of the receiver 1.

At the same time, as shown in FIG. 3, in response to the switch output from the maintenance switch 30, the CPU 12 outputs a switching control signal to the call changeover switch 40, and the call changeover switch 40 is switched from side a to side b. Therefore, the telephone jack 10-1 of the receiver 1 and the relay board 2-2, which were connected to each other by the communication lines 42-1 and 42-2 via the call changeover switch 40 of the relay board 2-2 in the regular monitoring state, a telephone jack 10-2 for the receiver, and a telephone jack 10-2 for the transmitter 7.
4 is disconnected, and a new call connection state is created between the terminal telephone jack 10-3 provided on the relay board 2-2 and the telephone jack 10-4 of the transmitter 7.

Therefore, when testing the operation of fire detectors, transmitters, etc. connected to relay board 2-2, which is disconnected from the transmission path from receiver 1, a telephone is connected to telephone jack 10-4 of transmitter 7. When the plug is inserted, the call buzzer 38 sounds through the call selector switch 40, which is switched to the b side, to make a call, and in response to this call, the terminal installed on the relay board 2-2 By plugging a telephone into the commercial telephone jack 10-3, a telephone call can be made with the transmitter 7.

In addition, the telephone jack 1 for the receiver of the relay board 2-2
If you insert the telephone plug into 0-2, receiver 1
The ringing buzzer 36 rings to make a call, and when the call is received, the plug 8 of the telephone 9 is inserted into the telephone jack 10-1 of the receiver, thereby establishing a call connection with the repeater 2-2. can be done.

Furthermore, when the operation test of the terminal connected to the relay panel 2-2 is completed and the maintenance switch 30 is restored to the OFF position, the changeover switch 1 is turned off as shown in FIG.
4 and 16 are switched to the a side again, and the relay board 2-2 is restored to the transmission line 3 from the receiver 1, and at the same time, as shown in FIG. switches to side a,
The receiver 1, the relay board 2-2, and the transmitter 7 are restored to a state where they can communicate with each other.

FIG. 4 is an explanatory diagram showing another embodiment of the telephone call connection of the present invention. In this embodiment, when the relay panel is disconnected from the transmission path from the receiver, the telephone line is also connected at the same time. It is characterized by being separated from the receiver side.

In FIG. 4, a call line 42-1 from the receiver 1 is connected to the a side of a call selector switch 40 provided on the relay board 2-2, and a call line 42-1 to the transmitter 7 is connected to the common terminal side of the switch. 2 is connected,
Furthermore, a calling buzzer 38 is connected to the switching position b side.

In the embodiment shown in FIG. 4, when the maintenance switch 30 is operated on the relay board 2-2 to disconnect it from the transmission path from the receiver 1, the call changeover switch 40 is switched from side a to Switching to the b side, the communication line 42-2 for the transmitter 7 is connected to the receiver 1.
The telephone line 42-1 is disconnected from the telephone line 42-1 and connected to the calling buzzer 38 connected to the b side.

When the telephone plug is inserted into the telephone jack 10-4 of the transmitter 7 while the telephone line to the receiver 1 is disconnected, the call buzzer 38 sounds via the call changeover switch 40, and the call is received. By inserting a telephone plug into the telephone jack 10-2, a telephone call can be made with the transmitter 7.

[Effects of the invention] As explained above, according to the invention, when the relay board is disconnected from the transmission line of the receiver for operation testing or repair of the disaster prevention terminal, the relay board is disconnected from the transmission line of the receiver according to the disconnection of the transmission line. The panel and the on-site transmitter's communication means are switched to a ready state, and by connecting a telephone on the on-site transmitter side, the repeater can be called and contacted for operation tests, etc., and the terminal operation is confirmed. Call control can be performed more appropriately by disconnecting the corresponding relay board from the receiver side during a test or the like.

[Brief explanation of the drawing]

Fig. 1 is a system configuration diagram of the present invention; Fig. 2 is an explanatory diagram showing an embodiment of the repeater board of Fig. 1; Fig. 3 is an explanatory diagram showing an embodiment of the call connection configuration of the present invention. ; FIG. 4 is an explanatory diagram showing another embodiment of the telephone call connection structure of the present invention. 1...Receiver, 2-1 to 2-5...Relay board, 3
...Transmission line, 4...Signal line, 5...Repeater, 6...
...Disaster prevention terminal, 7...Transmitter, 8...Plug, 9...
...Telephone, 10...Telephone jack, 12...
CPU (control unit), 14, 16...switch switch,
18...Bypass line, 30...Maintenance switch, 3
2...Switching control circuit, 36, 38...Call buzzer, 40...Call changeover switch, 42-1, 42
-2...Talking line.

Claims (1)

[Claims for Utility Model Registration] One or more relay boards are connected to the receiver via a transmission line, and a transmitter is connected to the relay board via a signal line, and the receiver, the relay board, and the transmitter In a disaster prevention monitoring device which is provided with a communication means in each of the machines and is connected to the communication line via a communication line, the communication means of the relay board is set to be able to communicate with the communication means of the receiver or the transmitter. and a control means for switching and controlling the switching means to enable communication between the relay board and the communication means of the transmitter when the relay board is disconnected from the transmission path of the receiver. Characteristic disaster prevention monitoring device.