JPH0664670B2 - Disaster prevention monitoring device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a distributed disaster prevention monitoring apparatus in which a plurality of relay boards to which disaster prevention terminals are connected by signal lines are connected to receivers via transmission lines.

[Prior Art] Conventionally, as this type of distributed disaster prevention monitoring apparatus, for example, one shown in FIG. 2 is known.

In FIG. 2, reference numeral 1 is a receiver, and CPU is a control means.
And a plurality of relay boards 2-1 to 2-5 are loop-connected to the receiver 1 via the transmission path 4.

The relay boards 2-1 to 2-5 are installed, for example, on each floor, and as shown by the relay board 2-1 as a representative, the sensor 7 is connected to the signal line 5 drawn out to the caution area via the relay 6. In addition to being connected, a control load 8 such as a fire door and a smoke proof damper is also connected.

In such a distributed type disaster prevention monitoring device, for example, when the CPU of the relay board 2-1 receives the fire detection signal from the detector 7, the fire detection information is transmitted to the receiver 1 via the transmission path 4. Fire alarm display. Further, the control information of the disaster prevention terminal associated with the fire reception is transmitted from the receiver 1 to the relay board 2-1 via the transmission path 4, and the relay board 2-1 decodes the control information to drive the necessary control load 8. .

By the way, in such a distributed disaster prevention monitoring device,
For example, when performing maintenance and inspection of a disaster prevention terminal on site, only the specific relay panel to be maintenance-inspected is separated from the transmission path 4 connecting the receiver 1 to the disconnection mode, and the relay panel alone is set to the disconnection mode. I try to perform maintenance.

As a maintenance inspection of the disaster prevention terminal of the relay panel in the disconnection mode setting, for example, if you take the operation test of the smoke detector that sets the accumulation time as an example, check the accumulation time with a stopwatch etc. Become. However, if the accumulation time is checked once for all the remaining smoke detectors after confirming the accumulation time, it will take time. Therefore, the accumulation mode is switched to the non-accumulation mode to perform the operation test. Furthermore, the sensors connected to the relay board are divided into sensors for which the storage mode is set and sensors for which the non-storage mode is set depending on the installation location. There are also vessels.

However, since it is complicated to perform an operation test by distinguishing accumulation, non-accumulation, and interlocking for each sensor, it is necessary to collectively set the accumulation mode or the non-accumulation mode during maintenance and inspection. .

And when the maintenance and inspection is completed, the sensor-related accumulation,
Return to the original state of non-accumulation, interlocking, etc., and further release the disconnection mode to restore the normal monitoring state.

[Problems to be Solved by the Invention] However, in such a conventional disaster prevention monitoring device, when the disconnection mode of the relay board is released at the end of maintenance and inspection and the monitoring control by the receiver is restored. , Had the following problems.

First, a mode different from the steady monitoring state is set at the time of maintenance and inspection, and there is a case that the mode change is forgotten and the state is returned to the steady monitoring state. There is a problem that the load cannot be driven.

Specifically, forget to return the sensor to the accumulation mode that was set to the non-accumulation mode at the time of maintenance and check the normal accumulation time of 20 seconds in the steady monitoring state when the accumulation time is shortened to 10 seconds at the time of maintenance and inspection. Forgot to return.

On the other hand, in the maintenance and inspection of the distributed disaster prevention monitoring device, for example, when the relay terminal 2-1 of FIG. Another relay board 2 that is normally monitored and controlled by the receiver 1
In some cases, the receiver 1 may change the preset control conditions for maintenance and inspection with respect to -2-2-5.

For example, a mode for interlocking control of both the fire door and the damper may be set, and the interlocking condition initially set when performing the operation test of the interlocking sensor that performs this interlocking control may be changed by the control information from the receiver 1. .

That is, in the operation test of the interlocking sensor that controls both dampers of the fire door, driving the damper in the test operation of the sensor does not cause any particular problem, but when the fire door is operated Since there is a problem such as being unable to enter and exit, the control information that sets the interlocking sensor interlocking conditions to "fire door: non-interlocking mode" and "damper: interlocking mode" is sent from receiver 1 to relay boards 2-1 to 2-. 5 and set.

Then, the inspector sequentially performs the operation test of the interlocking sensor with the interlocking mode set and changed under the control of the receiver.

However, when the disconnection mode of the relay board 2-1 is canceled and the monitoring control by the receiver 1 is restored after the maintenance and inspection,
If the change control of the interlocking condition is not performed on the relay board 2-1 and the inspector performs the operation test of the interlocking sensor of the relay board 2-1 in this state, the fire door that you want to prohibit interlocking at the time of inspection Has been activated, and in places where there are many people moving, such as department stores, the sudden closure of the fire door could lead to an accident.

The present invention has been made in view of such conventional problems, and was changed during restoration and inspection to the initial mode when the relay board separated during maintenance and inspection is returned to the supervisory control of the receiver. An object of the present invention is to provide a highly reliable disaster prevention monitoring device capable of smoothly and reliably switching to a control mode.

[Means for Solving the Problems] First, according to the present invention, a plurality of relay boards connected with a disaster prevention terminal via signal lines are connected to a receiver via a transmission line, and each of the relay boards is capable of rewriting data. Storage unit and a control unit for monitoring and controlling the disaster prevention terminal based on the storage data of the storage unit, and the receiver includes a control unit for monitoring and controlling the relay board by transmission control based on the storage data of the storage unit. For distributed disaster prevention monitoring equipment.

In contrast to such a disaster prevention monitoring device, in the present invention, the relay board is provided with a disconnection mode setting means for disconnecting transmission with the receiver, and when the disconnection mode is released, the receiver memory is stored. The relay board data stored in advance in the disconnection mode is transferred to the storage means of the relay board whose disconnection mode has been released, and when the disconnection mode is released, the receiver sets the control conditions initialized to other relay boards. When the control information to be changed is output, the control information is also output and transmitted to the relay board whose disconnection mode has been released.

[Operation] In the disaster prevention monitoring device of the present invention having such a configuration, the specific relay board is disconnected from the transmission path of the receiver by setting the disconnection mode at the time of maintenance and inspection, and the initially set mode is set. , For example, even when the sensor storage mode is changed to the non-storage mode and an operation test is performed, and the disconnection mode is canceled and the normal monitoring state is restored without forgetting to return to the storage mode, the disconnection mode is restored. The relay panel data used for the initial setting will be transferred to the relay panel returned from the receiver in response to the cancellation of the above, and will be written in the storage means, and the stored data of the relay panel will be restored to the initial state, Wrong data due to forgetting to restore the condition can be corrected correctly.

Also, during maintenance / inspection by setting the disconnection mode, control information that changes predetermined control conditions from the receiver to other relay boards, such as control information that cancels the interlocking of the fire door with the output of the interlocking sensor, It is output, and when maintenance and inspection is completed in this state and the disconnection mode is released, it is said that the relay board whose disconnection mode has been released from the receiver is changing the control conditions of other relay boards. The same control information is output and transmitted, the same control condition change state as that of the other relay boards can be automatically established, and it is possible to reliably prevent the occurrence of a failure due to the control condition not being changed.

[Embodiment] FIG. 1 is a constitutional view of an embodiment showing one embodiment of the present invention, in which a single relay board is taken out from the relay boards loop-connected to a receiver via a transmission path. But the second
As shown in the figure, a plurality of relay boards are loop-connected to the receiver 1 via transmission lines.

In FIG. 1, the relay board 2 is provided with a CPU 10 as a control unit, and a memory 50 as a data rewritable storage means is provided in the CPU 10. For the CPU 10, the signal line 5 is drawn out to the warning area through the transmission interface 48, and the signal line 5 is connected to the detector, the fire door, and the relay device 60 through the relay device 60.
The disaster prevention terminal 62 such as a smoke proof exhaust damper is connected. Disaster prevention terminal
The CPU 10 sequentially calls the relays 60 by the polling method to collect the detection information from the 62 or control the disaster prevention terminal 62.

Changeover switches 12 and 14 are provided in the relay board 2, the common terminal of the changeover switch 12 is connected to the transmission path 4 from another relay board, and the common terminal of the changeover switch 14 is connected to the transmission path 4 for the receiver 1. Connected to. The changeover switches 12 and 14 have changeover positions a and b, and in the steady monitoring state, the changeover switches 12 and 1
4 is closed to the switching position a side, and when the disconnection mode is set for the CPU 10 as will be described later, it is switched to the switching position b side and the transmission line 4 is connected to the bypass line 15 to connect the relay board 2 Are separated from the transmission path 4.

An AND gate 16 and an OR gate 1 are provided between the changeover switches 12 and 14.
8, a decoder 20 is provided. That is, the output line of the changeover switch 12 on the side of the changeover position a is input to the CPU 10 and
It is input to the ND gate 16 and the inverting input of the AND gate 16 is the CPU
When the control output of 10 is given, the relay board 2 sets the control output of the CPU 10 to the H level to disable the AND gate 16 when transmitting data to the receiver 1, and sends the transmission data from other relays. Prohibit Of course, when another relay board carries out data transmission, the control output of the CPU 10 becomes the L level and the AND gate 16 is set to the permissible state.

The output of AND gate 16 is fed to OR gate 18 and OR gate 1
Output data from the CPU 10 is given to the other input of 8. When transmitting data to the receiver 1, the CPU 10 sets the AND gate 16 in the prohibited state as described above, and at the same time outputs the transmission data to the OR gate 18.

The output of the OR gate 18 is input to the decoder 20. decoder
20 is controlled by the CPU 10, and when the CPU 10 does not transmit data to the receiver 1, the decoder 20 is in an inactive state and the transmission data from another relay panel transmitted via the OR gate 18 remains unchanged. Output. On the other hand, when the CPU 10 outputs the transmission data to the receiver 1, the decoder 20 is activated and modulates and outputs the data bit of the transmission data output via the OR gate 18.

The operation of the CPU10 is monitored by the watchdog circuit 22,
If the watch runs out of control, the fixed-cycle pulse output will not be performed.
26 detects runaway of CPU 10 and produces a detection output.

Further, the relay board 2 is provided with a fault detection circuit 26 having an input connection between the decoder 20 and the changeover switch 14, and the fault detection circuit 26 is provided.
26 detects a short circuit or disconnection from the line voltage of the transmission line 4 on the receiver 1 side, and outputs the failure detection result to the CPU 10.

Further, a maintenance switch 30 for setting the disconnection mode at the time of maintenance and inspection is connected to the CPU 10, and when the maintenance switch 30 is operated, the disconnection mode is set in the CPU 10.

A changeover control circuit 24 is provided for the changeover switches 12 and 14, and the changeover control circuit 24 outputs a runaway detection output of the watchdog circuit 22 or a control signal when the CPU 10 is set to the disconnection mode by operating the maintenance switch 30. In response, changeover switch
14, 16 are switched and controlled from the switching position a to b. Since the changeover switches 12 and 14 are interlocking switches, the output of the changeover control circuit 24 is shown only to the changeover switch 14.

Next, the receiver 1 will be described. The receiver 1 has a CP as a control unit.
A U30 is provided, and the CPU 30 has a memory 100 as a storage means.
Is built in.

Further, the receiver 1 is provided with changeover switches 32, 34, the common terminal of the changeover switch 32 is connected to the transmission path 4 from the relay board 2, and the common terminal of the changeover switch 34 is connected to another relay board. Connected to 4. Changeover switch 32,34
Has switching positions a and b, and by switching to the switching position b side, the receiver 1 can be disconnected from the transmission line 4 via the bypass line 35.

An AND gate 36 and an OR gate 38 are provided between the changeover switches 32 and 34.
And a decoder 40, and a fault detection circuit 46 and a watchdog circuit 42 are further provided. These circuit parts have exactly the same functions as the AND gate 16, the OR gate 18, the decoder 20, the fault detection circuit 26 and the watchdog circuit 22 provided in the relay board 2, and are directly switched by the runaway detection output by the watchdog circuit 42. The only difference is that the switches 32 and 34 are switched to the switching position b side.

The repeater data to be transferred and stored in the memories 50 of the plurality of relay boards 2 connected via the transmission path 4 is stored in advance in the memory 100 provided in the CPU 30 of the receiver 1, and the installation work of the system is completed. When the power is turned on, each repeater data stored in the memory 100 is transmitted to the corresponding repeater board through the transmission path 4 and written in the memory 50 provided in the CPU 10 of the repeater board 2.

The relay panel data transferred and written in the memory 50 of the relay panel 2 in the initial state in this way is, for example, in the case of a fire detector, set to the accumulation mode or the non-accumulation mode according to the installation location of the detector. In addition, it is data that sets a control condition for interlocking control of a fire door and a damper when a specific sensor is an interlocking sensor and a fire detection output of the interlocking sensor is received.

Next, the operation of the embodiment shown in FIG. 1 will be described.

First, in the steady monitoring state, the repeater 2 collects the detection data of the disaster prevention terminal 62 by sequentially calling by polling the repeater 60 via the transmission interface 48 based on the repeater data stored in the memory 50 of the CPU 10. Performs necessary control of the disaster prevention terminal. In the receiver 1, a confirmation signal is sent to the transmission line 4 at regular intervals for checking the function of the relay board 2, and the relay board 2 operates normally when receiving a response signal from the receiver 2 to the confirmation signal. I have confirmed that it is working.

Next, when performing maintenance and inspection of the disaster prevention terminal 62 connected to the relay board 2, the relay board 2 is disconnected from the transmission line 4 of the receiver 1 by operating the maintenance switch 30. That is, when the maintenance switch 30 is turned on, the disconnection mode is set by the CPU 10, and a control signal is output from the CPU 10 to the switching control circuit 24,
The changeover control circuit 24 changes the changeover switches 12 and 14 from the changeover position a side to the b side in the steady monitoring state, and the transmission line 4 in the relay board 2 passes through the bypass line 15 and the receiver 1
Is connected to the transmission line 4 on the side, and the CPU 10 of the relay board 2
Separated from.

With the disconnection mode set in the relay board 2 as described above,
For example, if an operation test of a storage type fire detector is performed as the disaster prevention terminal 62, the storage time is measured with a stopwatch etc. for the first one while it is in the storage mode, and after that the non-storage mode is set collectively. Then, the operation test is started.

When the operation test of all the sensors is completed, the non-accumulation mode set for maintenance and inspection is returned to the original accumulation mode. However, if the user forgets to return to this accumulation mode and cancels the disconnection mode of the relay board 2 by turning off the maintenance switch 30 to restore the steady monitoring state in which the transmission path 4 of the receiver 1 is connected, the receiver 1 side The CPU 30 of the receiver 1 reads out the relay panel data stored in advance in the memory 100 and sends it out after determining that the relay panel 2 has returned to the steady monitoring state. CPU1 of relay board 2
Receive at 0 and rewrite memory 50.

Therefore, when the disconnection mode is released at the end of the periodic inspection, the contents of the memory 50 of the CPU 10 will always be transferred and rewritten to the relay panel data from the receiver 1. Alternatively, even if the user forgets to return to the non-accumulation mode, the data stored in the memory 50 can always be corrected to correct data.

When disconnecting the relay board 2 from the transmission path 4 of the receiver 1 by operating the maintenance switch 30, the CPU 10 sends a disconnection notification to the receiver 1 side, and the receiver 1 side receives this disconnection notification. It makes it possible to recognize that the relay board 2 has been disconnected from the transmission path 4. Further, even when the disconnection mode is released and the relay board 2 returns to the transmission path 4, the CPU 10 sends the restoration information to the receiver 1, and the receiver 1 receives the restoration information and the receiver 1 stores the memory.
The relay board data of the relay board 2 previously stored in 100 is transferred and written.

On the other hand, control information for changing to a condition different from the control condition initially set by the receiver 1 for another relay board (not shown) in the state where the disconnection mode is set for the relay board 2 and maintenance and inspection are performed. When the relay board 2 is output, the same control information as that output to another relay board is transmitted to the relay board 2 returned to the transmission line 4 in response to the return of the relay board 2 due to the release of the disconnection mode. Become.

For example, at the time of maintenance and inspection when the disconnection mode of the relay board 2 is set,
If the receiver 1 is changing the interlocking mode for the fire door and the damper for the output of the interlocking detector of the relay panel to the other relay panel and changing the fire door to the non-interlocking mode to perform the operation test of the interlocking detector, When the relay board 2 is returned to the transmission line 4 by releasing the disconnection mode, the receiver 1 outputs control information for prohibiting the interlocking of the fire door to the relay board 2 that has been restored due to the interlocking mode of the interlocking sensor. become. For this reason, even if the operation test of the interlocking sensor connected to the relay panel that returned to the transmission path 4 after maintenance and inspection was done, the fire door was set to the non-interlocking mode like other relay panels. It is possible to reliably prevent the fire door from accidentally closing the operation test of the interlocking sensor.

It should be noted that the above-mentioned embodiment has been described by taking the process for changing the setting of the accumulation mode, the non-accumulation mode and the interlocking mode of the sensor as an example, but the present invention is not limited to this, and an appropriate disaster prevention including the sensor is performed. It is needless to say that the same can be applied to the initially set mode of the sensor and the control load or the condition change.

[Effects of the Invention] As described above, according to the present invention, for example, the non-accumulation mode whose setting is changed at the time of maintenance inspection is disconnected from the transmission line without forgetting to return to the accumulation mode. Even when the condition is restored, the relay panel data used for the initial setting is transferred to the relay panel that is automatically returned from the receiver and written in the storage means, and the conditions are changed during maintenance and inspection. Even if you forget to return it, you can always correct it when the relay board returns to the transmission line from the receiver, and it will be stored in the storage means without being affected by the condition changes during maintenance and inspection. It is possible to reliably monitor and control the disaster prevention terminal based on the relay board data.

Also, during maintenance / inspection with the disconnection mode set, the receiver outputs control information for changing the predetermined control conditions to other relay boards. When returning to the transmission path, the same control information is output and transmitted if the control conditions of other relay boards are changed to the relay board whose disconnection mode has been released from the receiver, and the same control conditions as those of other relay boards are transmitted. Change state can be established automatically,
It is possible to reliably prevent problems caused by the inability to change control conditions due to maintenance inspections.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of an embodiment showing an embodiment of the present invention; FIG. 2 is an overall configuration diagram of a distributed disaster prevention monitoring device. 1: Receiver 2: Relay board 4: Transmission line 5: Signal line 10,30: CPU (control unit) 12,14, 32, 34: Changeover switch 15,35: Bypass line 16,36: AND gate 18,38 : OR gate 20, 40: Decoder 22, 42: Watchdog circuit 24: Switching control circuit 26, 46: Fault detection circuit 48: Transmission interface 50, 100: Memory (storage means) 60: Repeater 62: Disaster prevention terminal

Claims (1)

[Claims] 1. A plurality of relay boards to which a disaster prevention terminal is connected via signal lines are connected to a receiver via a transmission path, each of the relay boards being capable of rewriting data and storing the storage means. In the disaster prevention monitoring device, the disaster prevention terminal includes a control unit that monitors and controls the disaster prevention terminal based on data, and the receiver includes a control unit that monitors and controls the relay board by transmission control based on the storage data of the storage unit. The relay board is provided with a disconnection mode setting means for disconnecting the transmission with the receiver, and when the disconnection mode is released, the relay board data previously stored in the storage means of the receiver is released from the disconnection mode. When the receiver outputs the control information for changing the preset control condition to another relay board when the disconnection mode is released, The control information disconnection mode has been released A disaster prevention monitoring device characterized in that the output is simultaneously transmitted to the relay board.