JP2002288763A - Disaster-preventive system, and operation number limiting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance safety of a system, and to allow sure disaster-preventive activity, in a disaster-preventing system. SOLUTION: This disaster preventing system 10 is constituted to connect a receiver 11, sensors 13, 15, flue gas-preventive terminals 14, 16, flue gas- preventive terminals x1, x2, x3,...xn, and an operation number limiting device 12 for limiting the operation numbers thereof, to an intelligent dispersion type control network N. The operation number limiting device 12 stores limiting values of the terminals output-operated in response to a capacity of an electric power source, grasps an actual operation number to transmit either of a stand-by signal or a stand-by releasing signal to the flue gas-preventive terminals x1, x2, x3,...xn, and the each terminal is not interlocked in the reception of the stand-by signal even when receiving a control signal from an origin interlock terminal, but interlocked in the reception of the stand-by releasing signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disaster prevention system including an intelligent distributed control network, and an operation number limiting device provided in the disaster prevention system.

[0002]

2. Description of the Related Art In a conventional disaster prevention system, a central processing unit such as a receiver employs a centralized control system that grasps the entire system and controls a number of terminals such as a fire detector and a smoke prevention terminal collectively. I was Examples of conventional disaster prevention systems
As shown in FIG. In a disaster prevention system 1 shown in FIG. 10, a sensor 3 and a smoke emission terminal 4 linked to the sensor 3 are connected to a receiver 2. The receiver 2, the sensor 3, and the smoke-elimination terminal 4 perform transmission and reception by polling communication, and the sensor 3 and the smoke-elimination terminal 4 respond to an instruction from the receiver 2. In addition, the detector 3 and the smoke exhaust terminal 4
Has a unique address, and the receiver 2 stores interlocking data indicating the interlocking relationship between the terminals. For example, if the detector 3 detects a fire, it sends a signal to the receiver 2, and the receiver 2 receives the signal and outputs a control signal to the smoke control terminal 4 linked to the detector 3. The smoke prevention terminal 4 performs an output operation in response to the control signal. The same is true when many fire detectors detect a fire at the same time and drive many smoke elimination terminals, in which case the receiver is mechanically controlled to fit within the overall power consumption limits. Alternatively, the number of terminals that perform output operation in software is controlled.

[0003]

However, in the above-mentioned centralized control system, if a central processing unit such as a receiver breaks down, there is a risk that the system will be down and no disaster prevention activities will be possible. Therefore, recently, a system has been developed in which a plurality of repeaters for controlling a predetermined number of terminals are set between the central processing unit and the terminals, and the repeaters take the place of the central processing unit. However, even in this case, if the repeater failed, the terminals connected to the repeater would not function, and did not essentially solve the problem of the centralized control system. .

An object of the present invention is to provide a disaster prevention system,
The purpose is to enhance the safety of the system and enable reliable disaster prevention activities.

[0005]

[MEANS FOR SOLVING THE PROBLEMS] To solve the above problems,
The invention according to claim 1 includes, for example, as shown in FIG. 1, a plurality of terminals (a sensor 13 and a smoke prevention terminal 14, a sensor 15 and a smoke prevention terminal 16) having an interlocking relationship. The disaster prevention system (10) is characterized in that a plurality of terminals are connected to an intelligent distributed control network (N) and command signals are transmitted and received between the terminals. Here, as the intelligent distributed control network, for example, LONWORK
S Network (developed by Echelon, USA).

According to the first aspect of the present invention, a plurality of linked terminals constituting the disaster prevention system are connected to the intelligent distributed control network, and command signals are transmitted and received between the terminals. Therefore, a conventional 'central processing unit' like a host computer is not required on the network, but if a 'central processing unit' is connected, even if it should fail, the terminals can control each other. Because of this, the impact is essentially small, and the disaster prevention function can be surely exhibited.

According to a second aspect of the present invention, in the disaster prevention system according to the first aspect, as shown in FIG. 3 and FIG. A plurality of smoke prevention terminals (x1, x
, Xn, y1, y2,... Yn), wherein the intelligent decentralized control network includes a plurality of smoke output terminals that simultaneously output and output among a plurality of smoke output terminals that are supplied with power from a common power supply. Number limiting means for limiting the number of pieces to a predetermined number or less according to the capacity of the power source (operating number limiting devices 12 and 20)
Are connected.

[0008] If the smoke emission control terminals are controlled and driven on the basis of the interlocking relationship between the terminals in the intelligent distributed control network, a large number of smoke emission prevention terminals operate simultaneously without permission and exceed the capacity of the power supply. there is a possibility. But,
According to the second aspect of the present invention, the number-of-operations limiting means for limiting the number of smoke-elimination terminals that simultaneously perform output operation among a plurality of smoke-elimination terminals supplied from the same power supply to a predetermined number or less is provided. Since it is provided, it is limited to operate only the smoke-elimination terminals within an allowable number, so that the current consumption does not exceed the capacity of one power supply. Here, the smoke prevention device operates while consuming current in order to prevent the spread of a fire in a fire door, a smoke outlet, or the like, to prevent smoke, or to eliminate the smoke in a predetermined direction. Also,
Examples of the “link source terminal” include various fire detectors and transmitters. "Performing the predetermined output operation" may include operating for fire prevention activities to prevent the spread of fire, etc., temporarily stopping and then returning to the original state, or operation and return for fire prevention activities Each operation may be performed.

According to a third aspect of the present invention, in the disaster prevention system according to the second aspect, the smoke prevention terminal transmits an ON signal to the operation number limiting means at the time of output operation, and stops the output operation. An OFF signal is transmitted at times, and the number-of-operations limiting means stores a limit value (limit value) of the number of smoke-prevention terminals that can be operated simultaneously, and outputs the limit value to the smoke-prevention terminal that is not operating. If the number of smoke control terminals that have transmitted the ON signal is less than the limit value, a permission signal (standby release signal) for permitting the output operation is transmitted, and if the number has reached the limit value, a standby signal for waiting for the output operation. Is transmitted.

According to the third aspect of the present invention, the number-of-operations limiting means compares the number of smoke prevention terminals during the output operation with the limit value. Since the permission signal is transmitted and the standby signal is transmitted if the limit value is reached, when the operating terminal has reached the limit value, the terminal does not operate again and the current consumption is one power supply. Do not exceed capacity. Here, "to the smoke-elimination terminal during operation stop" does not deny transmission to the smoke-elimination terminal during operation.

According to a fourth aspect of the present invention, in the disaster prevention system according to the second aspect, the smoke prevention terminal transmits an operation request signal indicating that the user wants to operate before the output operation to the operation number limiting means. Then, an ON signal is transmitted during the output operation, and an OFF signal is transmitted when the output operation is stopped. The number-of-operations limiting means stores a limit value of the number of smoke prevention terminals capable of operating simultaneously. The number of smoke control terminals that have transmitted the ON signal is less than the limit value, and the number of smoke control terminals that have transmitted the ON signal and the operation request are at least as large as the number of smoke control terminals that have transmitted the ON request signal. If the total number of smoke control terminals that have transmitted the signal does not exceed the limit value, a permission signal (standby release signal) that permits output operation is transmitted, and the number of smoke control terminals that transmit the ON signal is the limit value. Or the ON signal is sent If the sum of the number of smoke control terminals and the number of smoke control terminals that have transmitted the operation request signal exceeds the limit value, a standby signal to wait for the output operation is transmitted, and the smoke control terminal transmits the operation request signal. After a predetermined delay time elapses after the transmission of the signal, the output operation is performed when the permission signal is received, and the output operation is not performed when the standby signal is received.

According to the fourth aspect of the present invention, the number of active smoke control terminals and the number of terminals transmitting the operation request signal are compared with the limit value, and the number of active smoke control terminals is limited. If it is less than the value and the sum of the number of active smoke control terminals and the number of smoke control terminals that transmitted the operation request signal does not exceed the limit value, at least the smoke control device that transmitted the operation request signal The permission signal is sent to the terminal, and the number of active smoke emission terminals has reached the limit value, or the number of active smoke emission terminals and the number of smoke emission terminals that have sent the operation request signal If the sum exceeds the limit value, a standby signal is transmitted. Therefore, when the operating terminal has reached the limit value, or when the sum of the number of operating smoke prevention terminals and the number of smoke prevention terminals that have transmitted the operation request signal exceeds the limit value, the operation request If the terminal that is transmitting the signal is allowed to operate, if the capacity of the power supply is exceeded, the terminal will not operate newly and the current consumption will not exceed the capacity of one power supply .

In the case where the operation request signal is not output as in claim 3, for example, when a large-scale fire suddenly occurs and a plurality of terminals output continuously in a short time, the operation number limiting means is not provided. Due to the time required for the processing and transmission / reception, there is a possibility that the standby signal may not be able to keep up with the terminal and the terminal that normally has to wait may operate. However, in claim 4, each terminal first transmits an operation request signal before operation,
After waiting for a predetermined delay time, it follows the standby signal / permission signal from the actuation number limiting means. Therefore, even if there is a processing time in the actuation number limiting means or a time required for transmission / reception, the terminal waits for the delay time, so that the terminal follows the standby signal / permission signal accurately reflecting the current situation. In addition, the operating terminals can be reliably limited to within the limit value. Here, since it is "at least the smoke prevention terminal that has transmitted the operation request signal", all the smoke prevention terminals that are stopped may be used, and transmission to the operating terminal is not denied. .

According to a fifth aspect of the present invention, in the disaster prevention system according to the fourth aspect, the delay time is different for each of a plurality of smoke control terminals supplied with power from a common power supply. According to the invention as set forth in claim 5, since the delay time is set to be different for each terminal, even if an operation request signal is output so that a plurality of smoke control terminals perform an output operation at substantially the same time, each of the terminals may be output. The end times of the delay times are shifted from each other, and as a result, the number of terminals that are simultaneously in the output operation state can be suppressed. From this point, it is easy to limit the number of operations within a predetermined limit value.

According to a sixth aspect of the present invention, in the disaster prevention system according to any one of the second to fifth aspects, the actuation number limiting means intermittently transmits one of the standby signal and the permission signal at least at a predetermined interval. The smoke prevention terminal sets a predetermined monitoring time for monitoring the presence of the standby signal and the permission signal in accordance with the latest reception signal of the standby signal and the permission signal, and receives the standby signal. When the next signal is not received within the post-monitoring time, the standby signal is ignored, and the apparatus becomes a state in which the interlocking operation can be performed.

According to the sixth aspect of the present invention, after the standby signal is transmitted, if the next signal is not received even after the lapse of a predetermined monitoring time, the standby signal is ignored and the interlocking operation is enabled. Therefore, even if a standby signal is output and the next signal does not arrive due to a failure or disconnection of the operation number limiting means, the disaster prevention function of the smoke control terminal is reliably demonstrated, and the system Safety is guaranteed. Here, the monitoring time may be the transmission interval of the standby signal and the permission signal itself, or may be set to be longer than this transmission interval. Further, “at least” means that only a signal at a predetermined interval may be included, or a signal transmitted at a time other than a predetermined time may be included in addition to the signal at a predetermined interval.

According to a seventh aspect of the present invention, in the disaster prevention system according to any of the second to sixth aspects, the operation number limiting means transmits the standby signal and the permission signal as a broadcast signal. . According to the invention described in claim 7, since the operation number limiting means transmits the standby signal and the permission signal as a broadcast signal, only one address addressed to the terminal in the operation number limiting means is sufficient. The standby signal and the permission signal can be transmitted even if the number of terminals increases, irrespective of the capacity of the memory inside.

According to an eighth aspect of the present invention, there is provided the disaster prevention system according to the first aspect, wherein the terminal device includes a plurality of smoke emission control terminals that perform a predetermined output operation in accordance with a predetermined operation of the interlocking source terminal. And an interlocking state instructing means for transmitting at least one of an interlocking instruction signal to instruct the smoke prevention terminal to interlock with a predetermined operation of the interlocking source terminal and a non-interlocking instruction signal to instruct not to interlock. A receiver 11) is provided.

According to the eighth aspect of the present invention, the interlocking state instructing means instructs the smoke prevention terminal to be interlocked or non-interlocked. When it is not preferable, it is possible to switch between the interlocking state and the non-interlocking state by instructing non-interlocking, and instructing the interlocking state after the completion of inspection or the like, which is highly convenient.

According to a ninth aspect of the present invention, in the disaster prevention system according to the eighth aspect, the interlocking state instruction means intermittently transmits one of the interlocking instruction signal and the non-interlocking instruction signal at least at a predetermined interval. In accordance with the latest received signal of the interlocking instruction signal and the non-interlocking instruction signal, the smoke prevention terminal sets a predetermined monitoring time for monitoring the presence or absence of the interlocking state signal and the non-interlocking instruction signal in the smoke prevention terminal, When the next signal is not received within the monitoring time after the reception of the non-interlocking instruction signal, the non-interlocking instruction signal is ignored, and a state in which the interlocking operation is possible is achieved.

According to the ninth aspect of the present invention, after the non-interlocking instruction signal is transmitted, if the next signal is not received after a predetermined monitoring time, the non-interlocking instruction signal is ignored and the interlocking operation is enabled. If the non-interlocking instruction signal is output and the next signal does not arrive due to a failure or disconnection of the series of motion state indicating means, the disaster prevention function of the smoke prevention terminal will not It is fully demonstrated and the security of the system is guaranteed. Here, the monitoring time may be the transmission interval of the interlocking instruction signal and the non-interlocking instruction signal itself, or may be set to be longer than the transmission interval.

The invention according to claim 10 is, for example, shown in FIG.
As shown in FIG. 3 and FIG. 6, a plurality of interlocking source terminals and a plurality of smoke control terminals that perform a predetermined output operation in conjunction with a predetermined operation of the interlocking source terminal are provided. A smoke prevention terminal is provided in a disaster prevention system (10) configured to be connected to an intelligent distributed control network (N), connected to the intelligent distributed control network, and supplied with power from a common power supply. A plurality of smoke control terminals (x1, x2 ... x
(n, y1, y2... yn) to limit the number of smoke output terminals that simultaneously perform an output operation to a predetermined number or less according to the capacity of the power supply.
It is. According to the tenth aspect, the same operation and effect as those of the second aspect can be obtained.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. <First Embodiment> FIG. 1 is a diagram showing a disaster prevention system 10 as an example of the present invention. The disaster prevention system 10
Receiver 11, operation number limiting device 12, sensors 13, 15,
Smoke prevention terminals 14 and 16 are provided. The receiver 11 is connected to each terminal device, grasps the current situation in the disaster prevention system 10, displays the situation, and performs a fire notification by an alarm. Further, an operation unit (not shown) including a switch and the like is provided, and various settings, setting cancellation, and the like can be performed via the operation unit. Examples of the detector 13 include a smoke detector,
Examples include a heat sensor and a flame sensor, which detect a fire and output an alarm signal. Examples of the smoke prevention terminal 14 include a fire door and a smoke outlet.

The disaster prevention system 10 is composed of an intelligent distributed control network N. The receiver 11, the operation number limiting device 12, the sensors 13, 15 and the smoke emission terminals 14, 16 are each hardware nodes. 11a, 12a, 13
a, 14a, 15a, and 16a, and this node 11
a to 16a are connected to the network N. Each of the nodes 11a to 16a includes a neuron chip (not shown) which is a microcomputer dedicated to a network, a transceiver (not shown) for physically connecting the neuron chip to the network N, and the like. The neuron chip includes a CPU (Central Processing Unit) and various memories. Predetermined settings are made for each neuron chip, whereby the receiver 11, the operation number limiting device 12,
Each of the sensors 13 and 15 and the smoke and smoke prevention terminals 14 and 16 have intelligence and can communicate with each other.
We are building an intelligent distributed control network. FIG. 1 shows only a part of the disaster prevention system 10, and a number of various terminals are connected to the network N, and nodes are also mounted on these terminals.

In the disaster prevention system 10, the receiver 11 is connected to all the terminals as described above, but does not generally control all the terminals as in the related art. The receiver 11 is merely connected to each terminal in the disaster prevention system 10 and plays a role of grasping the overall situation.
It can be said that each terminal has a substantially equal relationship.

In FIG. 1, the detector 13 and the smoke control terminal 1
4. The sensor 15 and the smoke control terminal 16 are set in an interlocking relationship. Since the relationship between the sensor 15 and the smoke control terminal 16 is exactly the same as that of the sensor 13 and the smoke control terminal 14, the receiver 11 and the sensor 1 will be described below with reference to FIG.
3. The relationship between the smoke prevention terminal 14 will be described in detail. At least one self-address and a finite number of destination addresses can be stored in the receiver 11 and the neuron chip of each terminal node that constitute the disaster prevention system 10, and here, for example, two self-addresses and 15 Can be stored.

As shown in FIG. 2, the receiver 11, the sensor 1
3. Each of the smoke control terminals 14 has its own address. In addition, the sensor 13 and the smoke control terminal 14 also have their own group addresses. The group address is a common address used when transmitting a broadcast signal to a terminal belonging to a predetermined group, for example, a floor unit. Further, as the transmission destination address, for example, the receiver 11 stores the address and the group address of the smoke and smoke prevention terminal 14, and the sensor 13 stores the receiver 11
, The address of the smoke control terminal 14, etc.
The smoke prevention terminal 14 stores the address of the receiver 11, the address of the operation number limiting device 12, which will be described later, and the like. Each of the receiver 11, the sensor 13, and the smoke control terminal 14 checks the destination address of the signal transmitted via the network N, and if the destination address is the self address or the self group address, the signal is transmitted to the neuron. The data is taken into a specific CPU in the chip.

The operation of the disaster prevention system 10 when a fire is detected will be described with reference to FIG. In addition, the smoke prevention terminal 14 is linked with the sensor 13, but the operation is restricted by the operation number limiting device 12, which will be described later. Here, the receiver 12, the sensor 13, Description will be given in relation to the smoke exhaust terminal 14. For example, the sensor 13
Detects a fire, and transmits an alarm signal to the receiver 11 and the smoke prevention terminal 14. The receiver 11 performs predetermined various alarm operations in response to the alarm signal. On the other hand, smoke prevention terminal 1
Numeral 4 receives and outputs an alarm signal from the sensor 13 and performs an output operation (for example, an operation of closing the fire door), and outputs a response signal indicating that the output operation has been performed to the receiver 11. . Further, after a predetermined time elapses after the output operation in response to the alarm signal, the smoke prevention device 14
An output operation is performed so as to return in response to a control signal or the like from 1. Here, a command signal such as an alarm signal from the sensor 13 for controlling and driving the smoke prevention equipment is referred to as a control signal. Further, the output operation of the smoke prevention terminal includes both an output operation in response to a control signal (control output operation) and a subsequent return operation (return output operation).

By the way, in the disaster prevention system 10, a heartbeat signal for transmitting a predetermined signal from one to another at predetermined intervals (for example, one minute intervals) can be set as necessary. In the present embodiment, the receiver 11 is set to transmit a heartbeat signal relating to interlocking / non-interlocking to the smoke emission control terminal 14. The heartbeat signal is an interlocking instruction signal that instructs that the output operation may be performed in conjunction with the alarm signal of the sensor 13 or a non-interlocking instruction signal that prohibits the interlocking operation. That is, the receiver 11 is the interlocking state instruction means of the present invention.
Switching between interlocking and non-interlocking on the receiver 11 side is performed by operating a switch in the operation unit. If the receiver 11 is configured to be able to instruct interlocking / non-interlocking from the receiver 11 in this way, it is highly convenient when interlocking is inconvenient, for example, during maintenance and inspection. Then, the smoke prevention terminal 14 is interlocked or non-interlocked according to the type of the signal (latest information) received immediately before the alarm signal from the sensor 13. It interlocks with the sensor 13 and does not interlock with the sensor 13 if a non-interlocking instruction signal is received.

Further, the smoke prevention terminal 14 selects an interlocking operation if a heartbeat signal for instructing interlocking / non-interlocking is not received from the receiver 11 for a predetermined monitoring time. I have. Thereby, temporarily, the receiver 1
Even if a failure occurs after the transmission of the non-interlocking signal, the non-interlocking instruction signal is ignored after a predetermined monitoring time has elapsed, and the interlocking state is established. Therefore, the safety of the system is guaranteed. . The monitoring time may be the same as the heartbeat signal interval or may be set longer.

By the way, in the case of a conventional centralized control type disaster prevention system, the number of smoke prevention terminals at which receivers and repeaters operate mechanically or software simultaneously is limited so that current consumption is not insufficient. Was. However, as described above, the disaster prevention system 10 uses the intelligent distributed control network N to enhance the uniqueness of the terminal such that the smoke prevention terminal 14 is activated by the alarm signal of the sensor 13. System. Conversely, there is a possibility that a fire actually occurs, a large number of detectors are activated, and a large number of smoke emission terminals linked to those detectors are simultaneously output and the power consumption exceeds the limit. Therefore, in the present invention, an operation number limiting device 12 for limiting the number of operations of the smoke control terminal to a predetermined number or less is provided.

FIG. 3 shows the relationship between the actuation number limiting device 12 and the smoke control terminal. Here, the smoke prevention terminals x1 to x1 which are exactly the same as the smoke prevention terminal 14 are used as the smoke prevention terminals.
xn are shown. Smoke control terminals (hereinafter, also referred to as terminals) x1 to xn are connected to a network N, respectively, receive a signal (control signal) from a sensor serving as an interlocking source, and perform control output operation and return output. It operates and the power source of the supply source is common. Each smoke prevention terminal outputs an ON signal to the operation number limiting device 12 via the network N during the output operation, and outputs an OFF signal to the operation number limiting device 12 when the output operation is stopped.

The number-of-operations limiting device 12 is controlled by a neuron chip similarly to the other terminals, and operates to control the smoke-elimination terminals x1 to x.
The maximum number of smoke-control terminals that can simultaneously output among n is stored as a limit value (limit value) m value, and based on the m value, the number of operation terminals is set so that the current consumption falls within the capacity of the power source of the supply source. Restrict. The number-of-operations limiting device 12 counts the number of smoke prevention terminals during the output operation based on the ON signal and the OFF signal, and when the counted number reaches the value m, the ON state is further turned on. Do not admit that
Outputs a standby signal. Otherwise, it outputs a standby release signal. The standby signal and the standby release signal are periodically output as a heartbeat signal. However, when any change occurs, for example, when the number of active terminals changes from the state in which the limit value has been reached to the value less than the limit value, a standby release signal is output regardless of the time interval of the heartbeat, or conversely, the limit value is set. When it reaches, it sends a standby signal. The number-of-operations limiting device 12 has its own address, and here, 15 destination address can be set. Then, in order to use the memory for storing the transmission destination address efficiently, the connected smoke prevention terminal x1 is used.
Ｘxn as one group, the group address of the group is stored, and a standby signal and a standby release signal are transmitted as broadcast signals to the smoke control terminals x1 to xn. Here, it is assumed that the broadcast signal is transmitted.

Each smoke prevention terminal performs an output operation according to the control signal when receiving the standby release signal. Further, when a standby signal is received, no operation is performed even if a control signal is received from an interlocking source terminal. However, when the standby signal is received during the output operation, the output is continued as it is. It should be noted that the standby signal is a signal for controlling the current consumption so as not to increase any more.
It does not prevent returning to the F state. Terminal x1
The operation time of xn is set to a predetermined time for each. Similarly to the non-interlocking signal by the receiver 11, if the next signal is not transmitted from the operation number limiting device 12 even after a predetermined monitoring time has elapsed after the reception of the standby signal, the terminal x1 xn ignores the standby state and switches to the interlocking state. This monitoring time may be the interval time between the heartbeat signals of the standby signal and the permission signal, or may be longer.

The operation flow of the operation number limiting device 12 and the terminals x1 to xn will be described with reference to FIGS. FIG. 4A is an operation flow of the operation number limiting device 12, and FIG. 4B is an operation flow of the terminal x1 as an example of the smoke prevention terminal. Further, the operation flow of the terminal x1 in FIG.
There is a street. The terminals x2 to xn are also shown in FIG.
It has a similar operation flow. In FIG. 4, dotted lines connecting the flows indicate signal transmission. First, in step S1 of FIG. 4B, an event occurs in which a control signal such as an alarm signal is received from the interlocking source terminal. In step S2, it is determined whether or not a standby signal has been received from the operation number limiting device 12, and if it has been received, this determination is repeated until the operation standby is canceled in step S22, as described later.
If the standby signal has not been received, that is, if the standby release signal has been received, the process proceeds to step S3. In step S <b> 3, the terminal x <b> 1 operates, that is, enters the current consumption state, and transmits an ON signal to the operation number limiting device 12 as indicated by a dotted line. Elapse of the set operation time (step S
4) After that, in step S5, the operation stops and the output becomes O.
It becomes FF, transmits an OFF signal to the operation number limiting device 12, and ends this processing.

When the ON signal of step S3 or the OFF signal of step S5 is received, the actuation number limiting device 1
In FIG. 2, as shown in FIG.
It is determined that the event of receiving the N signal or the OFF signal has occurred (step S10). When such an event occurs, in Step S11, Step S
The number of terminals in the output operation is calculated in response to the received content of 10. Next, in step S12, it is determined whether or not the number of smoke prevention terminals during operation (during current consumption) is equal to or greater than the limit number m. If the value is equal to or larger than the m value, the process proceeds to step S13, where a standby signal is transmitted as a broadcast signal to all terminals x1 to xn, and this process ends. If the value is less than the value m in step S12, the process proceeds to step S14, where a standby release signal is transmitted as a broadcast signal to the terminals x1 to xn, and the process ends.

When the terminal xn receives the standby signal in step S13 or the standby release signal in step S14, an event occurs that receives the standby release signal or the standby signal as shown in step S20 of FIG. 4B. I do. Next, in step S21, step S20
It is determined whether the received signal is a standby signal or not.
At 22, the interlocking operation is enabled, and this process ends. If it is determined in step S21 that the signal is a standby signal, a standby state in which interlocking operation cannot be performed in step S23, and this process ends. FIG. 4 (a), (b)
In each case, the same processing is repeated if the next event occurs.

In the above description, the operation flow has been described centering on the processing in each of the smoke control terminals. Next, based on the timing chart of FIG. Will be described. FIG.
Then, (a) to (e) are terminals x1, x2, x3, x4,
The output status of x5 is illustrated, and the downward arrow indicates the smoke-elimination terminal x1.
.Times..times..times..times..times..times.5. Also, the limit number m value is set to 3,
(F) shows the count value of the operation terminal by the operation number restriction device 12, and (g) shows which of the standby signal and the standby release signal is transmitted from the operation number restriction device 12.

In the initial state, all of the terminals x1 to x5 are OF
In the F state, a standby release signal is output from the operation number limiting device 12 as a broadcast signal. In this state, first, at time T1, the terminal x1 is turned on in response to the alarm from the interlocking source sensor, and the operation number limiting device 12 sets the operation number to “1”.
And count. Next, at time T2, the terminal x2 is turned ON, and the operation number limiting device 12 counts the operation number as “2”. Further, at time T3, the terminal x3 is turned on. The actuation number limiting device 12 counts the actuation number as “3”,
It is determined that the limit number m has been reached, and a standby signal is output to the smoke-elimination terminals x1 to x5 so as not to be turned on. Next, at time T4, an alarm signal is transmitted from the interlocking source sensor to the terminal x4, but the terminal x4 does not enter the output operation state because the standby signal is received. When the terminal x1 is turned off at the time T5, the operation number restriction device 12 counts the operation number as “2” and outputs a standby release signal. As a result, the smoke prevention terminal x4 that has been in the standby state is turned on at the time T6, and the operation number limiting device counts “3” and outputs the standby signal again. The terminal x4 has been waiting for the time T4-T6.

Further, at time T7, the sensor at the interlocking source of the terminal x5 issues an alarm, but the terminal x5 does not enter the ON state since it receives the standby signal. At time T8, when the terminal x3 is turned off, the operation number limiting device 1
2 sets the number of operations to "2" and outputs a standby release signal. As a result, the terminal x5 is turned on at the time T9, the operation number limiting device 12 counts “3”, and outputs the standby signal again. When the terminal x2 is turned off at the time T10, the operation number limiting device 12 counts “2” and outputs a standby release signal. Thereafter, at time T11, the terminal x4 sets the time T1.
2, the terminal x5 is turned off, and the operation number limiting device 12
Is "0".

According to the disaster prevention system 10 described above, since the system is constituted by the intelligent decentralized control network N, each terminal in an interlocking relation can directly communicate control signals, and all are controlled by the receiver 11. It is not the configuration to do.
Therefore, the independence of each terminal is high, and even in the event that the receiver 11 fails, it is possible to reliably exhibit the disaster prevention function such that the smoke prevention terminal 14 operates if the detector 13 detects a fire. it can.

In addition, when the disaster prevention system 10 is configured by the intelligent decentralized control network N, since a large number of smoke prevention terminals can be operated respectively, the total current allowed by one power supply exceeds the total current allowed. There is a possibility. However, in the disaster prevention system 10, the operation number limiting device 1
Since 2 is connected, the operation is restricted so that only the smoke prevention terminals within the allowable number operate, and the current consumption does not exceed. The operation number limiting device 12 does not output a signal for controlling the operation to the smoke control terminal, but only switches the state of the standby signal. does not change. Further, the receiver 1
If a non-interlocking signal is transmitted from 1 to the smoke prevention terminal, or if a standby signal is transmitted from the operation number limiting device 12, if the next signal is not received even after the respective monitoring time has passed, Since each of the smoke control terminals enters an interlocking operation state, a state in which the receiver 11 or the operation number limiting device 12 cannot perform predetermined processing or a state in which the standby release signal or the interlocking instruction signal is not transmitted due to disconnection or the like occurs. Nevertheless, the disaster prevention function provided by the smoke elimination terminal is reliably demonstrated, and the safety of the system is guaranteed.

<Second Embodiment> In the disaster prevention system 10 of the first embodiment, the number-of-operations limiting device 12 is provided so as to limit the number of smoke prevention terminals that output simultaneously. It is possible to sufficiently cope with the case where the disaster prevention system 10 is installed in a building where it is unlikely that a fire will occur at many places at the same time, such as a general apartment house. However, due to the signal processing time in the actuation number limiting device 12 and the transmission time of the standby signal, when a plurality of smoke prevention and smoke emission terminals try to be turned on for interlocking or returning almost at the same time, the protection that should be originally in standby is The smoke exhaust terminal may also operate due to the delay of the standby signal, thereby exceeding the limit. For example, disaster prevention system 10
However, when installed in a large-scale building such as a factory, such a possibility can be assumed. Therefore, in the second embodiment, the following configuration is employed assuming a case where a plurality of smoke prevention and smoke emission terminals simultaneously operate.

The overall configuration of the disaster prevention system according to the second embodiment has exactly the same configuration as that of the disaster prevention system 10 according to the first embodiment. Hereinafter, the configuration different from that of the first embodiment will be described in detail. Will be described. FIG. 6 shows an operation number limiting device 20 according to the present embodiment. The number-of-operations limiting device 20, similarly to the number-of-operations limiting device 12, can output at a time with respect to, for example, dozens of smoke emission terminals (also referred to as terminals) y1 to yn connected to one power supply line. Is limited to be within the consumption current that can be supplied by one power supply line. Like the other terminals, the number-of-operations limiting device 20 is controlled by the neuron chip and has its own address.
Although five can be set, in order to efficiently use the memory for storing the destination address, the terminals y1 to yn are set to one.
A group address is stored as a group, and a broadcast signal is transmitted. Here, it is assumed that a broadcast signal is transmitted.

Each of the smoke control terminals y1 to yn operates in response to a control signal from the sensor of the link source terminal, similarly to the smoke control terminals x1 to xn. However,
Each of the terminals y1 to yn in the present embodiment transmits an operation request signal to the operation number limiting device 20 upon receiving a control signal from the link source terminal.
Furthermore, the terminals y1 to yn are set to have different delay times for each terminal (see FIG. 8), and after transmitting the operation request signal, stand by for the delay time. Since the length of the delay time can be arbitrarily set to be 10 times or more the length of the transmission / reception signal, for example, the transmission / reception signal has a sufficient length of several hundred milliseconds for about 10 milliseconds. Set.

On the other hand, the number-of-operations limiting device 20 stores the maximum number of smoke-elimination terminals that can be output at one time as the limit value (limit value) m according to the capacity of the power source of the supply source. If the number of the terminals is m or the number of terminals that are operating and has transmitted the operation request signal exceeds m in total, a standby signal is output. In cases other than these conditions, a standby release signal is output. After the delay time, the terminals y1 to yn check the reception status of the standby signal, and if the standby signal is received, temporarily cancel the operation request and output the operation request signal again after a predetermined time has elapsed. Has become. If a standby release signal has been received, an output operation is performed, and an ON signal is transmitted to the operation number limiting device 20. When the output is stopped after a predetermined operation time has elapsed, an OFF signal is transmitted to the operation number limiting device 20.

The standby signal and the standby release signal have the same characteristics as those of the first embodiment, and are transmitted from the operation number limiting device 20 as a broadcast signal and basically as a heartbeat signal. Further, when a request signal, an ON signal, and an OFF signal are received from the terminal, if there is a change in the situation, the signal is transmitted each time. Further, even after a predetermined monitoring time has elapsed after the reception of the standby signal, the next signal is transmitted to the operation number limiting device 1.
When no transmission is made from the terminal 2, each of the terminals y1 to yn automatically switches from the standby state to the interlocking state.

The operation flow of the operation number limiting device 12 and the terminals y1 to yn will be described with reference to FIGS. FIG.
(A) is an operation flow of the operation number limiting device 20, and (b) is an operation flow of the terminal y1 as an example of the smoke prevention terminal. Further, the operation flow of the terminal y1 in (b) is of two types, A and B. Note that the terminals y2 to yn have the same operation flow as in FIG. In FIG. 7, dotted lines connecting the flows indicate signal transmission. First, in step J1 of FIG. 7B, an event occurs in which a control signal is received from the interlocking source terminal. In step J2, it is determined whether or not a standby signal is received from the operation number limiting device 20, and if so, this determination is repeated until the operation standby is canceled in step J22 as described later, and the standby signal is received. If not, that is, if the standby release signal has been received, the process proceeds to step J3.

In step J3, the terminal y1 transmits an operation request signal to the operation number limiting device 20, and if a predetermined delay time has elapsed (step J4), the process proceeds to step J5. In step J5, it is determined whether or not a standby signal has been transmitted from the actuation number limiting device 20, and if so, the process proceeds to step J6, where a signal to withdraw the operation request signal is transmitted to the actuation number limiting device 20, It returns to step J2. If it is determined in step J5 that the standby signal has not been transmitted, that is, that the standby release signal has been transmitted, the process proceeds to step J7. In step J7, the terminal y1
Performs an output operation, that is, enters a current consumption state, and transmits an ON signal to the operation number limiting device 20. After elapse of the set operation time (step J8), in step J9,
The operation is stopped, an OFF signal is transmitted to the operation number limiting device 20, and the process is terminated.

When the ON signal of step J7 or the OFF signal of step J9 is received, the actuation number limiting device 20 performs the following operations as shown in step J10 of FIG.
It is determined that an event that an ON signal or an OFF signal related to current consumption has been received has occurred. When such an event occurs, in step J11, step J
Upon receiving the received content of 10, the number of terminals in the output operation is counted. On the other hand, when the operation request signal of step J3 or the operation request withdrawal signal of step J6 is received, it is determined in step J12 that an event indicating that a signal relating to the operation request has been received has occurred. Next, in step S13, the number of terminals transmitting operation requests is counted.

After step J11 and step J13
After that, the process proceeds to step J14, where it is determined whether or not the number of smoke prevention terminals during operation (during current consumption) is equal to or greater than the limit number m. If the value is equal to or more than the m value, step J
Move to 15. If the value is less than the m value in step J14, the process proceeds to step J16, where "the number of smoke emission terminals during operation (during current consumption) + the number of terminals issuing operation requests" is larger than the limit number m value. Is also determined. If it is determined to be larger, the process proceeds to step J15.
If it is determined that it is smaller, the process proceeds to step J17. At step J15, the standby signal is broadcasted to all the terminals y1 to y1.
yn and the process ends. On the other hand, step J1
In step 7, a standby release signal is transmitted as a broadcast signal to terminals y1 to yn, and this process ends.

When the terminal yn receives the standby signal of step J15 or the standby release signal of step J17, an event of receiving the standby release signal or standby signal occurs as shown in step J20 of FIG. 7B. Judge that you have done. Next, in step J21, it is determined whether or not the signal received in step J20 is a standby signal. If the signal is not a standby signal, that is, if the signal is a standby release signal, an interlocking operation is enabled in step J22.
This process ends. If it is determined in step J21 that the signal is a standby signal, the process enters a standby state in which interlocking operation cannot be performed in step J23, and this process ends. FIG.
In (a) and (b), the same processing is repeated when the next event occurs.

Next, based on the timing charts of FIGS. 8 and 9, a case will be described in which a plurality of smoke control terminals operate in response to a signal from the interlocking sensor. 8 and 9, (a) to (e) are terminals y1, y2, y3, y4, y
5, the downward arrow indicates when an alarm signal is issued from each of the interlocking source sensors of the terminals y1 to y5. Further, the limit number m value is set to 3, (f) is the count value of the terminal operating by the operation number limiter 20,
(G) shows the count value of “the number of operation terminals + the number of request terminals” by the operation number restriction device 20, and (h) shows which of the standby signal and the standby release signal is transmitted from the operation number restriction device 12. In (g), the number of requests is indicated by “dots”. 8 and 9, in the initial state, the terminals y1 to y1
y5 are all in the OFF state, and the standby number cancel signal is output from the actuation number limiting device 20 as a broadcast signal. Also,
The delay times P1 to P5 of the terminals y1 to y5 are set so as to gradually increase. However, this length of time is only an example.

FIG. 8 shows a case where the interlocking sources of the terminals y1 to y5 each emit an alarm signal at different times. First, at time T20, the terminal y1 transmits an operation request signal in response to the alarm from the interlocking sensor. The operation number limiting device 20 counts the number of requests as “1”. After the delay time P1 of the terminal y1, since the standby release signal is transmitted from the operation number limiting device 20, the terminal y1 is turned on, the operation number is counted by the operation number limiting device 20, and the number of requests becomes "1". Changes from the count “1” to the count “0”. Next, at time T21, the terminal y2 transmits an operation request signal in response to the alarm from the interlocking source sensor, and the operation number limiting device 20 counts the number of requests as “1”. The terminal y2 is turned on after the delay time P2, and the operation number limiting device 20 sets the operation number to “2”.
And the number of requests is counted as “0”. further,
At time T22, the terminal y3 transmits an operation request signal, and the operation number limiting device 20 counts the number of requests as “1”. Terminal y
3 is turned on at a time T23 after the delay time P3, the actuation number limiting device 20 counts the number of actuations as "3" and the number of requests as "0", determines that the number m of limitation has been reached, and prevents Smoke exhaust terminal y1
A standby signal is output for .about.y5.

Next, at time T24, the alarm signal is transmitted from the interlocking source sensor to the terminal y4, but the terminal y4 does not enter the ON state because the standby signal is received. further,
At time T25, the alarm signal is transmitted to the terminal y5 from the interlocking sensor, but the terminal y5 does not enter the ON state because the standby signal is received. At time T26, terminal y1
Is turned off, the operation number limiting device 20 counts the number of operations as "2" and outputs a standby release signal. As a result, the smoke control terminals y4 and y5 in the standby state are set to the time T2.
In step 7, an operation request signal is transmitted. Actuation number limiting device 20
Counts “the number of operations + the number of requests” as “4” and outputs a standby signal. The delay time P4 of the terminal y4 is shorter than the delay time P5 of the terminal y5. At the time T28 at the end of the delay time P4 of the terminal y4, the terminal y4 withdraws the operation request signal because the standby signal has been transmitted. Thereby, the operation number limiting device 20 counts “the number of operations + the number of requests” as “3” and outputs a standby release signal. Next, at the end of the delay time P5 of the terminal y5, since the standby release signal has been transmitted, the terminal y5 is turned on and outputs an ON signal.
The actuation number limiting device 20 counts the actuation terminal as “3” and outputs a standby signal.

At time T29, when the terminal y3 is turned off, the operation number limiting device 20 counts the number of operating terminals as "2" and switches to the standby release signal. Again, terminal y4
Transmits an operation request signal, and the operation number limiting device 20 counts “operation number + request number” as “3”. During the delay time P4, the terminal y2 is turned off, and the number of operations is counted as "1" and "the number of operations + the number of requests" is counted as "2". Delay time P4
At the end, since the standby release signal has been transmitted from the operation number limiting device 20, the terminal y4 is turned on, and the operation number limiting device 20 counts the number of operations to “2”. afterwards,
The terminals y5 and y4 are sequentially turned off, the count of the number of operations (“the number of operations + the number of requests”) is also reduced, and finally “0”
And count.

FIG. 9 shows a case where control signals are transmitted from the interlocking sensor to the terminals y1 to y5 at time T40 almost simultaneously. At time T40, the terminals y1 to y5 simultaneously transmit operation request signals, and the operation number limiting device 20 counts “operation number + request number” as “5” and outputs a standby signal. First, at the end of the delay time P1 of the terminal y1, a standby signal is output from the operation number limiting device 20, and the terminal y1 withdraws the request and returns "operation number +
The “request number” is counted as “4”. Similarly, the terminal y2 withdraws the request, and the operation number limiting device 20 counts “operation number + request number” as “3” and outputs a standby release signal. Terminal y3
Since the standby release signal is transmitted at the end of the delay time P3 (time T41), the terminal y3 is turned on,
An ON signal is transmitted to the operation number limiting device 20. At almost the same time, the terminals y1 and y2 transmit the operation request signal again.
The number-of-operations limiting device 20 counts the number of operations as “1” and “the number of operations + the number of requests” as “5”, and outputs a standby signal.

The delay time P4 of terminal y4 and 2 of terminal y1
The delay time P1 of the second request signal ends almost simultaneously.
At this time, the standby signal is output from the operation number limiting device 20, the terminals y1 and y4 cancel the request, and the operation number limiting device 20 sets the operation number to "1" and "operation number +
The number of requests is counted as "3" and a standby release signal is output. The delay time P5 of the terminal y5 and the delay time P1 of the second request signal of the terminal y2 end almost at the same time (time T42). At this time, since the standby release signal has been transmitted, the terminals y2 and y5 are in the ON state, and transmit an ON signal to the operation number limiting device 20. Again, the actuation number limiting device 20
Counts the number of operations and the number of operations + number of requests as "3",
Outputs a standby signal.

At time T43, the terminals y3 and y5 are turned off almost simultaneously, the number of operations is counted as "1", and the standby release signal is output. Then, terminals y1, y
4 outputs an operation request signal almost simultaneously. “Number of operations + number of requests” is counted as “3”. Delay time P of terminal y1
At the end of 1, since the standby release signal has been transmitted, the terminal y1 is turned ON, and the number of operations is counted to "2". Since the standby release signal has been received also at the end of the delay time P4, the terminal y4 is turned ON. Here, the operation number limiting device 20
Counts the number of operations to “3” and outputs a standby signal.
Thereafter, the terminal y2 is turned off at the time T44, the number of operations is counted to "2", and the terminal y2 is changed to a standby release signal. The terminal y1 is turned off at the time T45, and the terminal y4 is turned off at the time T46. Accordingly, the actuation number limiting device 20 decreases the count of the actuation number (“actuation number + request number”), and finally Counts as "0".

According to the above-described second embodiment, not only the same operation and effect as in the first embodiment can be obtained, but also each smoke prevention terminal outputs a standby release signal from the operation number limiting device 20. Even if it has been transmitted, first, the operation request signal is transmitted to the operation number limiting device 20, and the operation number limiting device 20 outputs a standby signal or a standby release signal after judging including “the number of operations + the number of requests”. The smoke prevention terminal is configured to wait for a sufficient delay time, and to turn on if a standby release signal is issued.
Therefore, even if there is a time required for processing and transmission / reception in the operation number limiting device 20, a sufficient delay time is required,
A standby release signal / standby signal that accurately reflects the current situation of all terminals connected to the actuation number limiting device 20 is output, and the smoke prevention terminal selects ON / OFF accordingly. Terminals that should not be turned on are not turned on, and it can be reliably limited to be within the allowable current consumption. Moreover, since the delay time is set differently for each terminal, even if a control signal is output to a plurality of smoke prevention terminals simultaneously and frequently, the end time of the delay time of each smoke prevention terminal is determined. Will deviate from each other,
As a result, the number of terminals that are turned ON at the same time is reduced, and it becomes easier to limit the number of terminals to a predetermined limit.

The present invention is not limited to the above-described embodiment, but can be modified as appropriate. For example, the receiver 11 may be configured so as to connect to an intelligent distributed control network by providing a separate interface without mounting a node. Also from the receiver 11,
If necessary, as shown by the dotted line in FIG. 2, a control signal for controlling and driving may be output, and the smoke prevention terminal may perform an output operation in response thereto. The interlocking relationship is not limited to the sensor and the smoke elimination terminal, and the interlocking relationship can be set between all terminals (including the receiver) installed in the disaster prevention system. Smoke exhaust equipment,
Two or more terminals can be set in various combinations, such as a sensor and a local sound, a transmitter and a smoke control terminal, or a smoke control terminal. In addition, the number-of-operations limiting device in the above-described embodiment limits the number of operations by a method of counting the number of smoke prevention terminals, but limits the number of operations based on the current consumption of each smoke prevention terminal. May be configured. In addition, in the present invention, the broadcast signal may be used as needed, and the broadcast signal may not be used if the number of transmission destinations is small. In the first and second embodiments,
Nodes were mounted on the smoke control terminal itself, but a smoke control repeater that outputs a drive signal to each smoke control terminal is provided, and a node is provided in each of the smoke control relays so that the smoke control terminal is connected to a network. You may comprise.

[0062]

According to the first aspect of the present invention, a plurality of linked terminals constituting a disaster prevention system are connected to an intelligent distributed control network, and command signals are transmitted and received between the terminals. . Therefore, a conventional 'central processing unit' like a host computer is not required on the network, but if a 'central processing unit' is connected, even if it should fail, the terminals can control each other. Because of this, the impact is essentially small, and the disaster prevention function can be surely exhibited.

According to the second aspect of the present invention, the number of actuations that limits the number of smoke emission terminals simultaneously output to a predetermined number or less among a plurality of smoke emission terminals supplied from the same power supply Since the limiting means is provided, the operation is restricted so that only the smoke-elimination terminals within an allowable number are operated, so that the current consumption does not exceed the capacity of one power supply.

According to the third aspect of the present invention, the number-of-operations limiting means compares the number of smoke prevention terminals during the output operation with the limit value. Since the permission signal is transmitted and the standby signal is transmitted if the limit value is reached, when the operating terminal has reached the limit value, the terminal does not operate again and the current consumption is one power supply. Do not exceed capacity.

According to the fourth aspect, the same effects as those of the third aspect are obtained, and each terminal first transmits an operation request signal before operation, waits for a predetermined delay time, and then limits the number of operations. According to the standby signal / permission signal from the means. Therefore, even if there is a processing time in the actuation number limiting means or a time required for transmission / reception, the terminal waits for the delay time, so that the terminal follows the standby signal / permission signal accurately reflecting the current situation. In addition, the operating terminals can be reliably limited to within the limit value.

According to the fifth aspect of the present invention, the delay time is set to be different for each terminal. Therefore, even when a plurality of smoke control terminals output at substantially the same time, an operation request signal is output. Therefore, the end times of the delay times of the respective terminals are shifted from each other, and as a result, the number of terminals that are simultaneously in the output operation state can be suppressed. From this point, the number of operations is limited within a predetermined limit value. It will be easier.

According to the sixth aspect of the present invention, after the standby signal is transmitted, if the next signal is not received even after the lapse of a predetermined monitoring time, the standby signal is ignored and the interlocking operation is enabled. Therefore, even if a standby signal is output and the next signal does not arrive due to a failure or disconnection of the operation number limiting means, the disaster prevention function of the smoke control terminal is reliably demonstrated, and the system Safety is guaranteed.

According to the seventh aspect of the present invention, the number-of-operations limiting means transmits the standby signal and the permission signal as a broadcast signal, so that only one address for the terminal in the number-of-operations limiting means is sufficient. Regardless of the capacity of the memory in the number limiting means, a standby signal / permission signal can be transmitted even if the number of terminals increases.

According to the eighth aspect of the invention, the interlocking state instructing means instructs either the interlocking or non-interlocking to the smoke prevention terminal, so that the terminal is linked, for example, at the time of maintenance and inspection. When it is not preferable, it is possible to switch between the interlocking state and the non-interlocking state by instructing non-interlocking, and instructing the interlocking state after the completion of inspection or the like, which is highly convenient.

According to the ninth aspect of the present invention, after the non-interlocking instruction signal is transmitted, the interlocking operation can be performed by ignoring the non-interlocking instruction signal unless the next signal is received after a predetermined monitoring time. If the non-interlocking instruction signal is output and the next signal does not arrive due to a failure or disconnection of the series of motion state indicating means, the disaster prevention function of the smoke prevention terminal will not It is fully demonstrated and the security of the system is guaranteed.

According to the tenth aspect of the present invention, in the disaster prevention system, the number of smoke output terminals that output simultaneously from a plurality of smoke output terminals supplied from the same power supply is equal to or less than a predetermined number. Since the number of operating devices is limited to only one, the current consumption is prevented from exceeding the capacity of one power supply because only the smoke emission terminals within the allowable number are limited to operate.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a disaster prevention system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing details of a partial configuration of the disaster prevention system of FIG. 1;

FIG. 3 is a diagram showing a relationship between an operation number limiting device of the disaster prevention system of FIG. 1 and a smoke prevention terminal.

4 is a flowchart showing the operation of each of the number-of-operations limiting device and the smoke prevention terminal of FIG. 3;

FIG. 5 is a timing chart showing the operation of the operation number limiting device and the smoke prevention terminal of FIG. 3;

FIG. 6 is a diagram illustrating a relationship between an operation number limiting device and a smoke prevention terminal in a disaster prevention system according to a second embodiment of the present invention.

FIG. 7 is a flowchart showing the operation of each of the operation number limiting device and the smoke control terminal of FIG. 6;

8 is a timing chart showing the operation of the operation number limiting device and the smoke prevention terminal of FIG.

9 is a timing chart showing the operation of the operation number limiting device and the smoke control terminal of FIG. 6, showing the case where each smoke control terminal outputs an operation request signal simultaneously.

FIG. 10 is a diagram showing a conventional disaster prevention system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Disaster prevention system 11 Receiver 12, 20 Actuation number limiting device 13, 15 Detector 14, 16, x1, x2 ..., xn, y1, y2 ..., yn
Smoke prevention terminal

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Seiichi Tanaka 1-11-6 Hatagaya, Shibuya-ku, Tokyo Inside Nittan Co., Ltd. (72) Inventor Yuji Hisamitsu 1-11-6 Hatagaya, Shibuya-ku, Tokyo Nik F term (reference) in Tan Co., Ltd. 5C087 AA02 AA03 BB65 BB77 DD02 DD04 DD33 EE06 EE08 EE18 GG12 GG21 GG32 GG38 GG61 GG62 GG64 GG69

Claims (10)

[Claims] 1. A disaster prevention system comprising a plurality of terminals having an interlocking relationship, wherein the plurality of terminals are connected to an intelligent distributed control network, and command signals are transmitted and received between the terminals. 2. A terminal device comprising: a plurality of smoke control terminals which perform a predetermined output operation in conjunction with a predetermined operation of an interlocking source terminal, wherein the intelligent distributed control network has a common power supply. Actuation number limiting means for limiting the number of smoke emission terminals that output simultaneously from among the plurality of smoke emission terminals to which power is supplied to a predetermined number or less according to the capacity of the power supply is connected. The disaster prevention system according to claim 1, wherein 3. The smoke emission control device according to claim 1, wherein:
An ON signal is transmitted at the time of the output operation, and an OFF signal is transmitted at the time of stopping the output operation. The operation number limiting means stores a limit value of the number of smoke prevention terminals capable of operating simultaneously, O
If the number of smoke control terminals that have transmitted the N signal is less than the limit value, a permission signal for permitting the output operation is transmitted, and if the number has reached the limit value, a standby signal for waiting for the output operation is transmitted. The disaster prevention system according to claim 2, which performs the disaster prevention. 4. The smoke control terminal according to claim 1, wherein
Before the output operation, send an operation request signal to operate,
An ON signal is transmitted during the output operation, and an OFF signal is transmitted when the output operation is stopped. The number-of-operations limiting means stores a limit value of the number of smoke prevention terminals capable of operating simultaneously, and at least stores The number of smoke control terminals that have transmitted the ON signal is less than the limit value, and the number of smoke control terminals that have transmitted the ON signal and the operation request signal for the smoke control terminal that has transmitted the operation request signal. If the sum of the number of transmitted smoke control terminals does not exceed the limit value, a permission signal for permitting the output operation is transmitted, and the number of smoke control terminals transmitting the ON signal has reached the limit value or is ON. If the sum of the number of smoke control terminals that have sent the signal and the number of smoke control terminals that have transmitted the operation request signal exceeds the limit value, a standby signal that causes the output operation to wait is sent. After the operation request signal is transmitted, Later, disaster prevention system according to claim 2, characterized in that perform output when receiving the permission signal, no output operation when receiving the standby signal. 5. The disaster prevention system according to claim 4, wherein the delay time is different for each of a plurality of smoke control terminals supplied with power from a common power supply. 6. The number-of-operations limiting means transmits at least one of a standby signal and a permission signal intermittently at a predetermined interval, and the smoke control terminal according to the latest reception signal of the standby signal and the permission signal, Set a predetermined monitoring time for monitoring the presence or absence of the standby signal and the permission signal in the smoke prevention terminal, if the next signal is not received within the monitoring time after the reception of the standby signal, ignore the standby signal, The disaster prevention system according to any one of claims 2 to 5, wherein the system can be operated in an interlocked manner. 7. The system according to claim 2, wherein the operation number limiting means transmits the standby signal and the permission signal as a broadcast signal.
6. The disaster prevention system according to any one of items 6 to 6. 8. A terminal device comprising a plurality of smoke-prevention terminals for performing a predetermined output operation in accordance with a predetermined operation of an interlocking-source terminal, and a predetermined operation of the interlocking-source terminal with respect to the smoke-prevention terminal. 2. The disaster prevention system according to claim 1, further comprising: an interlocking state instructing unit that transmits at least one of an interlocking instruction signal instructing to interlock and a non-interlocking instruction signal instructing not to interlock. . 9. The interlocking state instructing means transmits at least one of an interlocking instruction signal and a non-interlocking instruction signal intermittently at a predetermined interval. According to the latest reception signal, a predetermined monitoring time is provided for monitoring the presence or absence of the interlocking state signal and the non-interlocking instruction signal in the smoke control terminal, and the next signal is not received within the monitoring time after the reception of the non-interlocking instruction signal. in case of,
9. The disaster prevention system according to claim 8, wherein the non-interlocking instruction signal is ignored and the interlocking operation is enabled. 10. A system according to claim 1, further comprising a plurality of interlocking source terminals and a plurality of smoke output terminals that perform a predetermined output operation in conjunction with a predetermined operation of the interlocking source terminal. A disaster prevention system configured to be connected to the intelligent distributed control network is connected to the intelligent distributed control network, and the output operation is simultaneously performed among a plurality of smoke control terminals that are supplied with power from a common power supply. The number-of-operations limiting device, wherein the number of smoke prevention terminals to be operated is limited to a predetermined number or less according to the capacity of the power supply.