JP7441039B2 - Wide area abnormality warning system - Google Patents

Description

The present invention relates to a wide area abnormality warning system that monitors and warns abnormalities such as fires in restaurants and houses that occur in urban areas where buildings are densely packed.

According to the Fire Service White Paper, a fire with a burnt-out area of ^33,000m2 (10,000 tsubo) or more is considered a ``large fire'', but a large fire that spreads in an urban area during normal times is the first in 1976. It has not occurred since the Sakata Great Fire.

However, in urban areas where wooden buildings are densely packed, roads are narrow and some buildings are old, making it difficult for fire engines and firefighters to enter in the event of a fire. If this happens, there is a risk of widespread urban fires.

On the other hand, in recent years, alarm devices that detect and warn of fires in houses have become widespread. Among these, residential fire alarms are called residential alarms.

These types of residential alarms are equipped with a sensor section and an alarm section, and issue a fire alarm when a fire is detected due to smoke or heat. Because it can monitor and alarm, it is easy to install and inexpensive, and it has become widely popular as it becomes mandatory to install it in general homes.

In addition, by mutually communicating between multiple residential alarms, when a fire alarm is output from any residential alarm, other residential alarms will also output fire alarm sounds in conjunction with each other. Wireless interlocking residential alarm systems have also been put into practical use and are becoming widespread.

However, in such conventional wireless-linked fire alarm systems, when one residential alarm receives radio signals from other residential alarms, multiple radio signals using the same communication frequency are transmitted. The signals may arrive at the same time and cause a collision, and the frequency of signal collision increases as the number of residential alarms installed in a warning area increases, which limits the number of residential alarms that can be installed in one warning area. be done.

In order to solve this problem, groups of multiple residential alarms are formed, each group uses a different communication frequency, and when forming groups, residential alarms are A fire alarm system is known that performs group interlocking in which a maximum number of fire alarms is set and repeaters are arranged between a plurality of groups formed in this way to interlock them (Patent Document 2).

In this way, in a fire alarm system that uses different communication frequencies for each group to perform group interlocking, the total number of interlocking alarms can be increased by interlocking multiple groups within a warning area. Since the communication frequencies of different alarm devices are different, even if a signal from an alarm device in a certain group and a signal from an alarm device in another group arrive at the same time to an alarm device in a certain group, signal collision will not occur. Signals can be transmitted and received reliably.

Group-linked fire alarm systems can be installed in facilities with a floor area of less than 3,000 square meters that are not required to install fire alarm equipment, such as group homes that provide housework support for the elderly and mentally disabled. While avoiding the problem of signal collision, the number of interlocking alarms in the entire group home is increased to a necessary and sufficient number, making it possible to provide a fire monitoring function substantially equivalent to installing fire alarm equipment at a low cost.

For this reason, it is conceivable to apply the conventional group-linked fire alarm system to a wide-area fire alarm system that monitors fires in urban areas with dense wooden structures. This allows residential units in urban areas to be monitored to be divided into groups of 15 residential units corresponding to the maximum number of residential alarms that can be configured into groups, for example 15 units, to prevent the frequency of signal collisions from increasing. A residential alarm group with a communication frequency is formed, and a repeater that converts the frequency of a fire interlock signal is installed between the groups in order to interlock the groups.

Japanese Patent Application Publication No. 2010-33236 Japanese Patent Application Publication No. 2011-034373

However, when such a conventional group-linked fire alarm system is applied to a wide-area fire alarm system targeting an urban area, when a fire alarm in one unit detects a fire and issues an alarm, other units in the same group Fire alarms can be output from the alarms in one dwelling unit and the alarms placed in all other groups, but in a wide-area fire alarm system, in the event of a fire in one dwelling unit, the alarms in all the dwelling units in all groups, In other words, by simultaneously outputting a fire alarm from the alarms of all the residential units in the monitored area, a fire alarm can be output even in residential units in a group where the fire emergency level is low and located quite far from the residential unit where the fire occurred. There is a problem that the output of a fire alarm may cause unnecessary confusion, and in the case of a non-fire alarm or a false alarm, the nuisance increases.

In addition, the grouping of residential units in the monitoring area is based on the agreement of the residents to mutually monitor fires, and it is necessary to fully consider the neighborhood relationships of local residents such as neighborhood associations, and it is necessary to divide the units into groups based on map information, etc. There is also the problem that it takes a lot of effort and time to group the dwelling units because it is not possible to group the dwelling units.

The present invention outputs abnormality alarms from neighboring residences within a limited range centered on the residence where an abnormality such as a fire has occurred, without requiring grouping of residences to avoid signal collision by using different frequencies. The purpose is to provide a wide-area abnormality warning system that enables.

(Wide area abnormality warning system)
The present invention provides a wide area abnormality warning system that includes:
Alarms are placed in each of the multiple residential units in the monitored area,
Alarms placed in each of multiple dwelling units relay abnormality interlocking signals so that the alarm action of the alarm of the dwelling unit that detected the abnormality spreads over time to the alarm action of the alarm of the other dwelling unit. It is characterized by sending.

(Setting relay delay time)
Each of the alarms transmits an abnormality interlocking signal so that multiple alarms installed in other neighboring dwelling units around the home unit enter the communication area,
Dwelling units existing in the monitoring target area are divided into a predetermined number of dwelling unit groups, and the relay delay time from receiving mutually different abnormality interlocking signals to the alarms of each dwelling unit in the dwelling unit group until relay transmission is determined. Set.

(Relay delay time thinning setting)
When the dwelling unit group is less than the predetermined number of dwelling units, the mutually different relay delay times set for the predetermined number of dwelling units are partially thinned out and set in the alarms of each dwelling unit less than the predetermined number .

(Relay control)
Each of the alarms is
Sends an abnormality interlock signal so that multiple alarms installed in other neighboring units around the home unit enter the communication area,
When an abnormality is detected in the home unit , an abnormality interlock signal is sent to a predetermined number, including a unique residential address for each dwelling unit, a sequence number indicating the number of transmissions, and a number of relays that increases by 1 from an initial value of 0 according to the number of transmissions. Send multiple times at time intervals,
When an abnormality interlocking signal containing a residential unit address different from the own address of the own residence is received from another residential alarm, and the number of relays included in the received abnormality interlocking signal is 1 or more, the number of relays is An abnormality interlocking signal including the number of relays decreased by 1 is relayed, and when the number of relays included in the received abnormality interlocking signal is zero, the abnormality interlocking signal is not relayed.

(basic effect)
The present invention provides a wide-area abnormality warning system in which an alarm is placed in each of a plurality of dwelling units existing in a monitoring target area, and the alarm placed in each of the plurality of dwelling units is connected to the alarm of the dwelling unit in which an abnormality has been detected. Since the abnormality interlocking signal is relayed so that the alarm operation by the alarms of other residences spreads as time passes, groups with different operating frequencies are formed for each alarm of a predetermined number of residences. Without the need for group interlocking, in which groups are interlocked using a repeater, the alarms of the dwelling unit where an abnormality such as a fire occurred is the center, and the alarms of neighboring dwelling units surrounding it, and the next outside. As time passes, alarms are activated by the alarms of the dwelling units in the order of the highest level of risk due to the abnormality , so that the alarms of the neighboring dwelling units surrounding the abnormality spread over time. It can be expanded accordingly.

For example , if a fire occurs as an abnormality, one of the units in the unit where the fire occurred will first output a fire alarm, and the alarms in the eight units surrounding the unit with the highest fire risk will be activated by sending a fire interlock signal. When the alarm that outputs the alarm and detects the fire sends a second fire interlocking signal, the alarms in the 16 dwellings with the next highest fire risk surrounding the outside of the 8 dwellings where the alarm was first activated are activated. A wide-area alarm is issued in which the fire alarm spreads over time by repeatedly transmitting a fire-linked signal from the alarm device that detected the fire.

(Effects due to communication area and relay delay time)
In addition, the alarm transmits an abnormality interlock signal so that multiple alarms installed in other neighboring units around the home unit enter the communication area, and the alarms in the home unit and the surrounding area Multiple alarms installed in other neighboring units are set to have different relay delay times from receiving the abnormality interlocking signal to relaying the signal, so that the alarms in your own unit are set to have different relay delay times. The transmitted abnormality interlocking signal is received by at least the alarm device of an adjacent dwelling unit and an alarm operation is performed, but the relay transmission of the abnormality interlocking signal is performed after a different relay delay time when the next abnormality interlocking signal is received. Therefore, communication errors caused by signal collisions between the relayed abnormality interlocking signals are sufficiently suppressed, and the alarms of the dwelling units are activated in a wide area so that the alarm spreads around the dwelling unit where the abnormality has occurred.

(Effects of setting relay delay time)
In addition, the residential units existing in the monitored area are divided into a predetermined number of residential unit groups , for example, nine residential units in a 3 x 3 matrix, and different relay delay times are set for the alarms of each residential unit in the residential unit group. Therefore, the grouping of dwelling units for setting the relay delay time can be performed uniquely based on the map information of the area to be monitored, and the setting of the relay delay time by grouping the dwelling units can be done simply and easily.

(Effects of relay delay time thinning settings)
In addition, when the number of dwelling unit groups is less than a predetermined number , for example, 9 dwelling units, the mutually different relay delay times that are set for the predetermined number (9 dwelling units) are partially thinned out, Therefore, from the actual map information, even if you try to form a group of 9 units of 3 x 3 units, some units may not exist depending on the location. In this case, the relay delay time corresponding to the existing dwelling unit is set, and the relay delay time corresponding to the non-existing dwelling unit is thinned out so that it is not used.

(Effect of relay control)
In addition, when each alarm detects an abnormality in its own dwelling unit , each alarm device receives a unique dwelling unit address for each dwelling unit, a sequence number indicating the number of transmissions, and a relay number that increases by 1 from the initial value 0 according to the number of transmissions. If the abnormality interlocking signal containing the included abnormality interlocking signal is transmitted multiple times at a predetermined time interval, and an abnormality interlocking signal containing a residential unit address different from the home unit address is received from another residential alarm, the abnormality interlocking signal that has been received When the number of relays included is 1 or more, an abnormality interlocking signal including the number of relays reduced by 1 is relayed, and when the number of relays included in the received abnormality interlocking signal is zero, an abnormality interlocking signal is relayed and transmitted. For example, when a fire occurs as an abnormality, the alarm of the dwelling unit where the fire occurred first transmits a fire interlock signal containing a sequence number = 1 and a relay count = 0, and the alarm in the surrounding area that receives this signal Since the number of relays is 0, the alarms in 8 dwelling units do not relay transmission, and as a result, fire alarms are output from the alarms in up to 8 dwelling units surrounding the dwelling unit where the fire occurred due to the fire interlock signal with sequence number = 1. Ru.

Subsequently, after a predetermined period of time, the alarm in the fire-occurring dwelling unit transmits a second fire interlock signal containing sequence number = 2 and relay count = 1, and the alarms in the surrounding eight neighboring dwelling units that received this signal transmit. , since the number of relays = 1, a fire interlock signal including the number of relays = 1 - 1 = 0 is relayed, and as a result, the fire interlock signal with sequence number = 2 is sent to the outside of up to 8 residential units surrounding the residential unit where the fire occurred. A fire alarm will be output from the alarms of up to 16 residential units surrounding the area. This makes it possible to relay and transmit a fire-linked signal that causes the alarm of a dwelling unit to perform an alarm operation so that the ripples spread around the dwelling unit where the fire occurred, while suppressing signal collisions due to relay transmission as much as possible.

(Effect of no relay transmission when receiving the same sequence number)
When the alarm receives a fire interlock signal from another residential alarm, if the received sequence number is the same as the sequence number already received, the alarm will not relay the fire interlock signal, so the alarm will not be able to relay the fire interlock signal. = Even if a fire interlock signal of 1 or more is received, if the received sequence number is the same as the sequence number already received, relay transmission will not be performed. Therefore, even if the same fire interlock signal is received multiple times, relay transmission will not be performed. This is only at the time of first reception, and it is possible to suppress signal collisions caused by multiplex relay transmission of fire interlocking signals as much as possible.

(Effects of alarm interlocking and relay control within the dwelling unit)
In addition, if multiple alarms are installed in a dwelling unit and fire alarms are activated by sending and receiving fire interlock signals to and from each other, relay control will be applied if a fire interlock signal different from the own address is received from another alarm. As a result, relay control is not performed when a fire interlocking signal that matches the self-address is received from another alarm, so depending on the dwelling unit, multiple alarms may be installed and fire alarms may be linked within the dwelling. In this case, if a fire-linked signal different from one's own dwelling unit address is received, relay transmission control will be performed since the fire-linked signal is from another dwelling unit, but In the same case, it is a fire interlock signal from other alarms in the same dwelling unit, so in this case, relay transmission control is not performed and multiple alarms installed in the dwelling unit relay transmission at the same time. avoid signal collision due to

(Effects of sending alarm stop interlocking signal and fire recovery interlocking signal)
In addition, if the alarm of the dwelling unit that detected the fire is stopped or the fire is restored, the alarms of other dwelling units will be affected as time passes, centering on the alarm of the dwelling unit where the alarm was stopped or the fire restoration action was performed. Since the alarm stop interlock signal or fire recovery interlock signal is relayed so that the alarm stop or fire recovery will spread in ripples, the alarm stop or fire recovery will be performed on the alarm of the dwelling unit where the fire occurred, and the alarm will be stopped. Then, as time passes, the alarm of the dwelling unit where the fire occurred is centered, the alarm of the neighboring dwelling unit surrounding it, the alarm of the neighboring dwelling unit surrounding the outside, and so on. The action to stop alarms or to stop alarms due to fire recovery is performed over a wide area so that the ripples spread around the residential unit.

Explanatory diagram showing the wide area fire alarm system showing the arrangement of residential units and residential alarms An explanatory diagram showing a residential unit group consisting of nine residential units (3x3 x 3), which is the basic unit of a wide area fire alarm system, and the arrangement of residential alarms. Time chart showing the relay delay time set for the residential alarm of the residential unit group in Figure 2 A time chart showing relay transmission by eight surrounding residential alarms when the central residential alarm shown in Figure 2 detects a fire and transmits a fire interlock signal twice. Block diagram showing the functional configuration of an embodiment of a wireless interlocking residential alarm used in a wide area fire alarm system Explanatory diagram showing a relay delay map for setting relay delay times for monitored areas An explanatory diagram using a relay delay map to show the warning range that spreads out in ripples around the basic residential unit group and the residential unit where the fire occurred. Explanatory diagram showing the setting of relay delay time based on the relay delay map in Figure 6 for residential units in the monitored area Explanatory diagram showing residential units where fires occurred in the monitored area An explanatory diagram showing the alarm operation of the first loop for eight surrounding dwelling units when the first fire interlocking signal is transmitted from the residential alarm of the dwelling unit where the fire occurred in Figure 9. An explanatory diagram showing the alarms of eight surrounding dwelling units that receive a fire interlock signal when the alarm of one dwelling unit in the first loop in Fig. 10 relays a fire interlock signal. An explanatory diagram showing the alarm operation of the second loop, which is the 16 dwelling units outside the alarmed first loop, when a second fire interlocking signal is transmitted from the residential alarm of the dwelling unit where the fire occurred following Fig. 10. Explanatory diagram showing the fire alarm operation of the first loop and the second loop when a fire occurs in another dwelling unit in the monitored area Flowchart showing the control operation of the residential alarm shown in Figure 3 Flowchart showing details of fire alarm control in step S2 of FIG. 14 Flowchart showing details of interlocking reception control in step S4 of FIG. 14

[Wide area fire alarm system]
(System overview)
FIG. 1 is an explanatory diagram showing a wide area fire alarm system showing the arrangement of residential units and residential alarms. As shown in FIG. 1, the wide-area fire alarm system of this embodiment is a wireless-linked fire alarm system that functions as an alarm installed in each of a plurality of residential units 12 in a monitoring target area such as an urban area with a high density of residences and stores. It is composed of the residential police equipment 10. In FIG. 1, the residential alarm 10 is indicated by a circle inside the dwelling unit, and the reference numerals for the residential alarm 10 and the dwelling unit 12 are shown for only two dwelling units, and the others are omitted.

The residential alarm 10 installed in multiple dwelling units outputs a fire alarm when a fire is detected, and also sends a fire interlock signal to the residential alarms of other residential units a predetermined number of times every time a predetermined period of time elapses. It has a function to relay and transmit a fire-linked signal so that the alarm operation of the alarm of the dwelling unit that detected a fire spreads out in a ripple pattern as time passes. .

(Basic unit of housing unit group)
FIG. 2 is an explanatory diagram showing the arrangement of residential alarms and a residential unit group consisting of nine residential units of 3 x 3 dimensions, which are the basic units of the wide-area fire alarm system.

As shown in FIG. 2, in the wide-area fire alarm system of this embodiment, a plurality of residential units existing in a monitoring target area are divided into residential unit groups of nine residential units in a 3 x 3 matrix, and each residential unit in the residential unit group is Each of the residential alarms 10-1 to 10-9 installed at 12-1 to 12-9 is set with a unique residential unit address and mutually different relay delay times Td1 to Td9 in a predetermined order. ing.

In addition, the residential alarms 10-1 to 10-9 installed in the residential alarms 12-1 to 12-9 of the residential unit group are different from the multiple alarms installed in other neighboring residential units around the home unit. Send interlocking signals such as fire, alarm stop, fire recovery, etc. to enter the communication area. Therefore, the transmission power of the residential alarms 10-1 to 10-9 is set so that the communication area is a residential unit adjacent to the home unit. The transmission power setting is divided into three levels: high, medium, and low, and the settings are switched to obtain the required communication area. In addition, in the following explanation, the fire interlocking signal will be mainly explained.

In addition, the residential alarms 10-1 to 10-9 installed in dwelling units 12-1 to 12-9 are configured so that the timing of relay transmission after receiving fire interlock signals from other residential alarms does not overlap. Therefore, different relay delay times Td1 to Td9 are set.

Here, one residential alarm 10-1 to 10-8 is installed in the dwelling units 12-1 to 12-8, but in the central dwelling unit 12-9, for example, three units are installed, divided by room. Residential alarm 10-9 has been installed to issue interlocking alarms within the residence.

In this way, when multiple residential alarms 10-9 are installed in the same dwelling unit 12-9, the residential alarm 10-9 that detects a fire sends a fire interlock signal that includes the unique residential address of the dwelling unit. However, the other residential alarms 10-9 in the dwelling unit output a fire interlocking alarm indicating a fire in the dwelling unit, since the dwelling unit address of the fire interlock signal matches the own dwelling unit address, but the other residential alarms 10-9 output Relay transmission to the residential alarms 10-1 to 10-8 of the dwelling unit is not performed.

In addition, when the three residential alarms 10-9 installed in dwelling unit 12-9 receive a fire interlocking signal that requires relaying from another dwelling unit, each of them relays and transmits the fire interlocking signal. By setting mutually different relay delay times, the relay transmission timings are prevented from overlapping.

Note that the following explanation will mainly be based on the case where one residential alarm 10 is installed in each dwelling unit.

(Avoiding signal collision due to relay transmission)
In this embodiment, when a fire alarm of a certain dwelling unit detects a fire, the alarm operation of the alarm of the dwelling unit where the fire was detected is centered on the alarm operation of the alarm of the dwelling unit of other dwelling units as time passes. Alarm control is performed by relaying and transmitting fire-linked signals so that the operation spreads in ripples, but in order to achieve this, multiple residential alarms must receive and relay fire-linked signals from other dwelling units. In some cases, it is important to avoid signal collisions.

In order to avoid signal collisions due to relay transmission of such fire-linked signals, the residential alarms 10-1 to 10-9 of the dwelling unit group shown in Figure 2 are configured to receive fire-linked signals from other residential alarms. The relay delay times Td1 to Td9 from the time of transmission to the time of relay transmission are set to be different from each other.

In addition, when a fire is detected in the own dwelling unit, the residential alarms 10-1 to 10-9 of the dwelling unit group have an initial value of 0 according to the unique dwelling unit address, the sequence number SN indicating the number of transmissions, and the number of transmissions. A fire interlocking signal including the number of relays RN that increases by one is transmitted multiple times at predetermined time intervals.

In addition, when the residential alarms 10-1 to 10-9 of a residential unit group receive a fire interlocking signal with a different dwelling unit address from their own dwelling unit address, they determine that the fire interlocking signal has been received from another residential alarm and relay it. Performs transmission control. In this relay transmission control, when the number of relays RN is 1 or more, a fire interlocking signal including the number of relays (RN-1) that is one time less than the received number of relays RN is relayed, and when the number of relays RN is RN = 0. In this case, the fire interlock signal will not be relayed.

In addition, in the following explanation, the fire interlocking signal received from another dwelling unit means that the fire interlocking signal of the dwelling unit address different from one's own dwelling unit address was received.

Furthermore, when the residential alarms 10-1 to 10-9 of a dwelling unit group receive a fire interlocking signal from another dwelling unit, if the received sequence number SN is the same as the sequence number that has already been received, they will not send the fire interlocking signal. No relay transmission.

In this way, the residential alarms 10-1 to 10-9 carry out control to avoid signal collisions of relayed fire interlocking signals as much as possible through relay control based on the relay delay time setting, the number of relays RN, and the sequence number SN. conduct.

(Relay transmission delay time)
FIG. 3 is a time chart showing relay delay times set in the residential alarms of the residential unit group in FIG. 2. As shown in FIG. 3, when the residential alarms 10-1 to 10-9 finish receiving the fire interlocking signal 70 from other residential alarms at time t0, the preset relay delay times Td1 to Td9 are different from each other. The fire interlocking signals 72-1 to 72-9 are relayed and transmitted at timings from time t1 to t9 after the elapse of time. By shifting the relay transmission timing in accordance with the relay delay times Td1 to Td9 in this manner, signal collision can be avoided.

FIG. 4 is a time chart showing relay transmission by eight surrounding residential alarms when the central residential alarm shown in FIG. 2 detects a fire and transmits a fire interlock signal twice. -9 indicates transmitting T, and the residential equipment 10-1 to 10-8 indicate receiving R and transmitting T.

As shown in FIG. 4, the central residential alarm 10-9 transmits the first fire interlock signal 70 at time t1. The sequence number SN of the first fire-linked signal is SN=1, and the number of relays RN is RN=0.

The first fire interlocking signal 70 sent by the residential alarm 10-9 is received by the surrounding eight residential alarms 10-1 to 10-8, but since the number of relays RN = 0, the relay transmission is Not done.

Subsequently, the residential alarm 10-9 transmits the second fire interlock signal 70 with the sequence number SN=2 and the number of relays RN=1 at time t2, and this is sent to the surrounding eight residential alarms 10-1 to 10. -8 is received. Since the number of relays of the second fire interlock signal RN = 1, the residential alarms 10-1 to 10-8 start relay control, and different relay delay times Td1 to Td8 have elapsed since the second reception end time t3. At different timings, the fire interlocking signal is relayed and transmitted with the number of relays RN=1-1=0.

Further, at time t4, the residential alarm 10-9 transmits the third fire interlock signal 70 with sequence number SN=3 and number of relays RN=2.

[Structure of residential alarm]
FIG. 5 is a block diagram showing the functional configuration of an embodiment of a wireless interlocking residential alarm used in a wide area fire alarm system.

As shown in FIG. 5, the residential alarm 10 includes a processor 14 known as a one-chip CPU, and for the processor 14, a smoke detector 16 functions as a fire sensor, and an alarm stop switch 18 functions as an operation unit. , an LED 20 including a drive circuit functioning as a display section, a speaker 22 including a drive circuit functioning as an acoustic notification section, and a communication section 24 to which an antenna 25 is connected.

The processor 14 is provided with a CPU 26, and a control logic 28, ROM 30, RAM 32, AD conversion port 34, input port 36, output port 38, audio output port 40, and communication port 44 are connected to a bus 42 from the CPU 26. There is. Note that the control logic 28 implements various hardware functions such as bus control accompanying control processing by the CPU 26.

The smoke detector 16 is connected to the AD conversion port 34, the alarm stop switch 18 is connected to the input port 36, the LED 20 is connected to the output port 38, the speaker 22 is connected to the audio output port 40, and communication The communication section 24 is connected to the port 44 .

The smoke detection section 16 has a known scattered light type smoke detection structure, and intermittently drives a light emitting section using an infrared LED to emit light at a predetermined period, and detects a light reception signal of the scattered light received by a light receiving section such as a photodiode. and outputs a smoke concentration detection signal. Note that a temperature detection section may be provided in place of the smoke detection section 16, and the temperature detection section uses, for example, a thermistor as a temperature detection element. Outputs a detection signal.

The communication unit 24 transmits and receives interlocking signals such as fire signals to and from other residential alarms according to a predetermined communication protocol. In Japan, this communication protocol is based on STD-30 (wireless equipment standard for low power security system wireless stations), which is known as the standard for specified low power wireless stations in the 400 MHz band, and is based on carrier sense. Communication without is allowed.

Furthermore, the communication unit 24 is provided with a transmitting unit and a receiving unit, and the transmitting unit can be set to have a maximum transmission power of 10 mW, for example, high, medium, etc. by operating a built-in changeover switch. It is possible to switch between three levels of transmission power (low and low), and the transmission power can be adjusted so that other residential units adjacent to the home unit can communicate with each other.

The CPU 26 is provided with the functions of a fire control section 46 and a relay control section 48 as functions realized by executing programs.

(Fire control function)
Fire alarm control by the fire control unit 46 is as follows. The fire control unit 46 reads the smoke concentration detection signal output from the smoke detection unit 16 from the AD conversion port 34, and detects a fire if the smoke concentration is equal to or higher than a predetermined threshold corresponding to the fire detection sensitivity set at that time. is detected and controls to output a fire alarm indicating a fire in the private residence.

As a fire alarm in this case, the fire control unit 46 causes the speaker 22 to repeatedly output an alarm sound indicating a fire in the residential unit, such as "Woooooo, the fire alarm has been activated. Please check", and also lights up the LED 20, for example. to display an alarm indicating a fire in your own residence.

When outputting a fire alarm, the fire control unit 46 outputs a fire-linked signal in a format that follows a predetermined communication protocol with its own residential unit address, sequence number SN = 1, number of relays RN = 0, and the command set to fire. The communication unit 24 is controlled to transmit a fire interlock signal to the alarms in other dwelling units, and the alarms in the other dwelling units which have received the fire interlock signal output a fire alarm.

In addition, if fire detection based on the smoke concentration detection signal from the smoke detection unit 16 continues, the fire control unit 46 detects the fire a predetermined number of times every time a predetermined time T elapses from the transmission of the first fire interlocking signal. Control is performed to repeatedly transmit the fire-linked signal while increasing the sequence number SN and the number of relays RN by one until reaching .

In this way, the time interval for transmitting the second and subsequent fire-linked signals determines the speed at which the alarm action spreads in ripples around the dwelling unit where the fire occurred, so it may be a fixed time interval or the number of transmissions. The time interval may be lengthened in accordance with the increase in .

In addition, when the fire control unit 46 receives a fire interlocking signal of the same dwelling unit address transmitted by another fire alarm in the same dwelling unit, if the alarm is not in progress, the fire control unit 46 outputs, for example, “Woooo, another fire alarm is coming” from the speaker 22. The system repeatedly outputs an alarm sound indicating a fire in another dwelling unit, such as "It has been activated, please check," and controls the LED 20 to blink, for example, to output an alarm indicating that another alarm in the dwelling unit has detected a fire.

In addition, when the fire control unit 46 receives a fire interlocking signal transmitted from a fire alarm of another dwelling unit having a different dwelling unit address, if the alarm is not in progress, the fire control unit 46 outputs, for example, “Woooooooooo” from the fire alarm of another dwelling unit. The system repeatedly outputs an alarm sound indicating a fire in another dwelling unit, such as "It has been activated, please confirm," and controls the LED 20 to blink, for example, to display an alarm indicating a fire in another dwelling unit.

In this case, by pre-registering the name of the residence corresponding to the address of the other residence, an alarm sound indicating a fire in another residence, such as "Woooooo, the fire alarm in Mr. A's house has been activated. Please check." You can also output it repeatedly.

Further, the fire control unit 46 also transmits an alarm stop interlock signal and a fire recovery interlock signal for alarm stop control and fire recovery control, as in the case of fire interlock control.

(Relay control function)
The relay control of the fire interlocking signal by the relay control unit 48 is as follows. If the number of relays RN included in the fire-linked signal received from another dwelling unit is RN=0, the relay control unit 48 controls not to relay and transmit the received fire-linked signal.

Furthermore, if the number of relays RN included in the fire interlocking signal received from another dwelling unit is RN=1 or more, the relay control unit 48 sets the number of relays by decreasing the received number of relays RN by one (RN-1). Control is performed to generate a fire interlock signal and to relay it after a predetermined relay delay time Td has elapsed.

In addition, the relay control unit 48 stores the sequence number SN included in the fire-linked signal received last time, and if the sequence number SN of the newly received fire-linked signal is the same as the previous one, relays the received fire-linked signal. Control not to transmit.

Moreover, when the relay control unit 48 receives a fire interlock signal having the same dwelling unit address from another residential alarm in the own residence, it performs control not to relay and transmit the received fire interlock signal.

Further, the relay control unit 48 also performs relay transmission control on the fire alarm stop and fire recovery interlock signals in the same manner as the fire interlock signal.

[Setting the transmission delay time for residential units in the monitored area]
Figure 6 is an explanatory diagram showing a relay delay map that sets the relay delay time for the monitored area, and Figure 7 is an explanatory diagram showing a relay delay map that uses the relay delay map to spread out alarm actions in ripples centered on the basic residential unit group and the residential unit where the fire occurred. FIG.

(Relay delay map)
As shown in FIG. 6, the relay delay map 50 is a virtual two-dimensional matrix representation of residential units in the monitoring target area. Delay numbers 1 to 9 indicating the relay delay time Td are shown. Here, delay numbers 1 to 9 indicate, for example, relay transmission delay times Td1 to Td9 shown in FIG. 3, respectively.

Note that the vertical and horizontal sizes of the relay delay map 50 are arbitrary, and the size of the rectangles forming the matrix is preferably set to a size that roughly matches the size of the dwelling units on the map of the area to be monitored.

As shown in the upper left corner of FIG. 7, the relay delay map 50 uses, for example, the upper left corner of the 8 surrounding 8 dwelling units surrounding the central dwelling unit, with the 9 dwelling unit groups of 3 x 3 shown in FIG. 2 as the basic unit. Set delay numbers 1 to 8 clockwise starting from , and set delay number 9 in the center.

Next, the relay delay map 50 shown in FIG. 6 can be created by arranging the residential unit groups of 3×3 in length and width as basic units in the horizontal and vertical directions.

A feature of this relay delay map 50 is that no matter where the central dwelling unit is selected, the delay numbers of the eight housing units surrounding the central dwelling unit are always arranged in different numbers, and there is no plurality of the same number.

For example, if we look at the central delay number 5, the delay numbers of the eight surrounding units are in the order (9-4-8-7-1-3-2-6). Furthermore, looking at the central delay number 7, the delay numbers of the eight surrounding units are in the order (4-8-9-6-2-1-3-5).

Using the properties of the relay delay map 50, as shown in FIG. 7, when the residential alarm transmits the first fire interlock signal (relay number RN = 0) due to the detection of a fire in the dwelling unit with delay number 9, The alarm systems in eight surrounding units receive the fire interlock signal and output a fire alarm. The alarm by the residential alarms of the surrounding eight dwelling units due to the first transmission of the fire interlock signal is called a first loop alarm or alarm operation.

Subsequently, when the residential alarm of the dwelling unit with the same delay number 9 transmits the second fire interlocking signal (relay count RN = 1), the residential alarms of the surrounding eight dwelling units receive the fire interlocking signal. , fire interlocking signals (number of relays RN = 1-1 = 0) are relayed in the order of delay numbers (1-2-3-4-5-6-7-8), and alarms are sent to the 16 surrounding units. device outputs a fire alarm. The fire alarm by the residential alarms of the surrounding 16 dwelling units is called a second loop alarm or alarm operation.

Similarly, in the third transmission of the fire-linked signal, a third loop alarm is issued by the alarms of the 24 residential units surrounding the second loop alarm.

In other words, in response to repeated transmissions of fire-linked signals from the alarm system of the dwelling unit where a fire has been detected, the fire alarm is set to a first loop alarm, a second loop alarm, and a third loop alarm centered on the dwelling unit where the fire occurred. In this way , an alarm is activated that spreads outward in a ripple pattern, and the ripple-like spread of the alarm can be set arbitrarily by determining the number of transmissions from the residential alarm that is detecting a fire. It becomes possible.

Additionally, if a fire breaks out in another unit due to sparks flying from the unit where the first fire broke out, the fire will spread outward in ripples, centered around the alarm in the unit where the fire started. Alarm operations will be performed multiple times.

[Setting the actual relay delay time for the monitored dwelling unit]
FIG. 8 is an explanatory diagram showing the setting of the relay delay time based on the relay delay map of FIG. 6 for residential units in the monitoring target area, and is set in the following procedure.

(1) Select any enclosed dwelling unit and set delay number 9.

(2) Set delay numbers (1-2-3-4-5-6-7-8) clockwise starting from the upper left corner for the eight housing units surrounding delay number 9. Here, if the corresponding dwelling unit does not exist, the number is skipped and an empty number is used.

(3) Next, for the nine dwelling units for which delay numbers 1 to 9 have been set, set delay numbers 1 to 9 to either the top, bottom, left or right on the diagram in the same way as in (1) and (2) above, and then Repeat this until the delay number is set.

Setting delay numbers based on the relay delay map 50 for residential units in the monitoring target area may be done manually, or by grouping 9 residential units in a 3 x 3 matrix and assigning different delay numbers 1 to 9. This may be done by program control that allocates.

[Wide area fire alarm operation]
Figure 9 is an explanatory diagram showing a dwelling unit where a fire occurred in the monitored area, and Figure 10 is an explanatory diagram showing the dwelling unit where a fire occurred in the monitoring target area. An explanatory diagram showing the alarm operation of one loop. Fig. 11 is an explanatory diagram showing the alarms of eight neighboring dwelling units that receive a fire interlock signal when the alarm of one dwelling unit in the first loop of Fig. 10 relays the fire interlock signal. Figures 12 and 12 show the alarm status when the second fire interlock signal is sent from the alarm of the dwelling unit where the fire occurred following Figure 10.

As shown in Figure 9, if a fire breaks out in a residential unit 60 (hereinafter referred to as the "fire-occurring residential unit") located in the monitoring area, the residential alarm indicated by delay number 9 installed in the fire-occurring residential unit 60 is activated. A fire is detected, and the first fire interlocking signal including the sequence number SN=1 and the number of relays RN=0 is transmitted.

As shown in FIG. 10, the fire interlock signal transmitted from the fire unit 60 is received by eight hatched units 62 adjacent to the fire unit 60, and the fire alarm signal of the first loop is received. are output all at once.

Subsequently, after a predetermined period of time has elapsed, the residential alarm of the dwelling unit 60 where the fire occurred transmits a second fire interlocking signal containing the sequence number SN = 2 and the number of relays RN = 1, and sends a second fire interlocking signal including the sequence number SN = 2 and the number of relays RN = 1 to the surroundings of the dwelling unit 60 where the fire occurred. It is received by the eight dwelling units 62 shown by hatching. Since the received relay count RN is RN=1, the residential alarm in dwelling unit 62 relays and transmits a fire interlock signal with the relay count RN reduced by one, RN=1-1=0.

In this case, the residential alarms of the eight residential units 62 relay the fire interlock signals at different timings after the relay delay times Td1 to Td8 corresponding to delay numbers 1 to 8 have elapsed.

Here, as shown in FIG. 11, if we focus on the relay transmission of the residential alarm with delay number 3 in dwelling unit 62, the fire interlock signal from the residential alarm with delay number 3 will be sent to the sandy area surrounding it. Fire alarms were received in seven residential units 64 with delayed numbers (6-5-1-8-4-9-2), and fire alarms were received in four buildings with delayed numbers (6-5-1-8) where fire alarms were not issued. A new fire alarm is output in dwelling unit 64.

If the relay transmission of such a fire-linked signal is performed in order according to different relay delay times in the eight residential units 62 surrounding the fire-occurring residential unit 60 shown in FIG. 10, as shown in FIG. The fire alarm of the second loop is sequentially issued from the 12 residential units 64 indicated by the sandy area surrounding the outside of the residential units 62.

Furthermore, when the fire alarm of the dwelling unit 60 where the fire occurred transmits the third fire interlock signal containing the sequence number SN = 3 and the number of relays RN = 2, the fire interlock signal is transmitted to the alarms of the outer dwelling units surrounding the dwelling unit 64. This will be relayed and a third loop fire alarm will be issued.

FIG. 13 shows a case where a fire occurs in another residential unit 60 in the monitored area, and when the first fire interlocking signal is transmitted from the residential unit 60 where the fire occurred, the fire occurs in the seven residential units 62 surrounding the fire. The alarm outputs the first loop fire alarm, and when the second fire interlocking signal is transmitted from the dwelling unit 60 where the fire occurred, the alarms installed in the 12 residential units 64 surrounding the outside of the 7 residential units 62 are activated. will now output the second loop fire alarm.

Furthermore, since the radio wave conditions vary, the fire interlock signal sent by the fire alarm is not necessarily received only by the fire alarms of adjacent dwelling units, and even more so by the alarm signals of neighboring dwelling units. However, in some cases, the alarm operation is performed by the alarm of the residence alarm of the dwelling unit where the fire occurred, and as time passes, the alarm operations of the alarm alarms of other dwelling units spread out in a ripple pattern. is always maintained.

[Control operation of wide area fire alarm system]
(Overall control operation)
FIG. 14 is a flowchart showing the control operation of the residential alarm device shown in FIG.

As shown in FIG. 14, when the fire control section 46 of the residential alarm 10 detects a fire alarm from the smoke concentration detection signal of the smoke detection section 16 in step S1, the process proceeds to step S2 and performs fire alarm control. Further, when the fire control unit 46 determines in step S3 that a fire interlocking signal is received from a residential alarm of another dwelling unit, the process proceeds to step S4, and performs interlocking reception control.

Further, when the fire control unit 46 detects an alarm stop operation by the alarm stop switch 18 in step S5 during a fire alarm, the process proceeds to step S6 to stop the alarm, and then transmits an alarm stop interlocking signal in step S7.

In addition, when the fire control unit 46 determines in step S8 during the fire alarm that the smoke concentration detection signal from the smoke detection unit 16 has decreased to a predetermined threshold value or less, that is, a fire recovery, the process proceeds to step S9 and stops the alarm. Later, in step S10, a fire recovery interlocking signal is transmitted.

(Fire alarm control)
FIG. 15 is a flowchart showing details of the fire alarm control in step S2 of FIG. When the fire control unit 46 detects a fire alarm in step S1 of FIG. 14, it proceeds to the fire alarm control of FIG. Proceeding to step S12, the sequence number SN is set to SN=1 indicating the first transmission, and the number of transmissions RN is set to the initial value of RN=0, and in step S13, SN=1, RN=0, own dwelling unit address, Send the first fire interlock signal with the command as fire.

Subsequently, when the fire control unit 46 determines in step S14 that the predetermined time has elapsed, the process proceeds to step S15, and if the sequence number SN is less than the predetermined final value (maximum number of transmissions), the process proceeds to step S16, in which the sequence number SN and the relay The number of times RN is increased by one, and in step S13, a second fire interlock signal is sent with SN=2, RN=1, own dwelling unit address, and command as fire, and in step S15, the sequence number SN is changed to the final value. When it is determined that the point has arrived, the control returns to FIG. 14.

(Interlocking signal reception control)
FIG. 16 is a flowchart showing details of the interlock reception control in step S4 of FIG. When the fire control unit 46 determines reception of an interlocking signal from another residential alarm in step S3 of FIG. 14, it proceeds to interlocking signal reception control of FIG. 16, and determines the sequence number SN and relay from the fire interlocking signal received in step S21 In addition to the number of times RN, the residence address and command are obtained.

Next, the fire control unit 46 proceeds to step S22, and if it determines that the command is fire-linked, proceeds to step S23, and if it determines that the linked alarm is not in effect, it determines that the received dwelling unit address is the own dwelling unit address in step S24. If it is determined that there is a match, the process proceeds to step S25, and a fire-linked alarm indicating a fire in the home unit is output. If a mismatch is determined, the process proceeds to step S26, and a fire-linked alarm indicating a fire in another residential unit is output. .

If the fire control unit 46 determines in step S22 that the command is not fire-linked, the process proceeds to step S27, and if it determines that the command is to stop fire alarm-linked or fire recovery, the process proceeds to step S28 and stops the fire-linked alarm. This fire-linked alarm may be stopped by stopping the output of the voice message and leaving the alarm display for a predetermined period of time in order to confirm the operation of the residential alarm later.

Subsequently, the relay control unit 48 operates, and when it is determined in step S29 that the received residential unit address is the residential unit address of another residential unit, the process proceeds to step S30, in which it is determined whether or not the sequence number SN has already been received. If it is determined that the number of relays has not been completed, the process proceeds to step S31, and it is determined whether or not the number of relays RN=0. If it is determined that the number of relays RN is not 0, the number of relays RN is decreased by one in step S32, and the number of relays RN is decreased by one in step S33. After the relay delay time Td, the fire interlocking signal is relayed and transmitted.

On the other hand, if it is determined in step S29 that the received residential unit address matches the own address, and if it is determined in step S30 that the sequence number SN has already been received, it is determined in step S31 that the number of relays RN=0. In this case, steps S32 and S33 are skipped, and the relay transmission of the fire-linked signal is not performed.

[Modification of the present invention]
(parent-child method)
In the above embodiment, when multiple alarm devices are installed in a dwelling unit, each alarm device communicates with each other without distinguishing between a master device and a slave device. Alternatively, the base unit may be provided with a repeater function, and communication for interlocking alarms may be performed between the base units of different dwelling units.

(Alarm)
The above embodiment takes as an example a residential alarm that detects and warns of fire, but other than residential alarms, such as fire alarms, gas leak alarms, CO alarms, and various crime prevention alarms The same applies to alarm systems equipped with alarm devices and systems that include multiple alarm devices.

Furthermore, although the above embodiment takes as an example the case where the sensor section and the alarm output processing section are integrated into the alarm device, other embodiments include an alarm device where the sensor section and the alarm output processing section are provided separately. It's okay.

(others)
Further, the present invention is not limited to the above-described embodiments, but includes appropriate modifications without impairing the objects and advantages thereof, and is not limited by the numerical values shown in the above-described embodiments.

10, 10-1 to 10-9: Resident alarm 12, 12-1 to 12-9, 62, 64: Residential unit 14: Processor 16: Smoke detection section 18: Alarm stop switch 20: LED
22: Speaker 24: Communication section 26: CPU
28: Control logic 30: ROM
32:RAM
34: AD conversion port 36: Input port 38: Output port 40: Audio output port 44: Communication port 46: Fire control unit 48: Relay control unit 60: Dwelling unit where fire occurred

Claims (3)

Alarms are placed in each of the multiple residential units in the monitored area,
The alarms arranged in each of the plurality of dwelling units send an abnormality interlocking signal so that the alarm operation of the alarm of the dwelling unit in which the abnormality has been detected spreads as time passes. A wide area abnormality warning system that relays transmission ,
Each of the alarm devices transmits the abnormality interlock signal so that a plurality of alarm devices installed in other neighboring residential units around the home unit enter a communication area,
The residential units existing in the monitoring target area are divided into residential unit groups of a predetermined number of residential units, and the alarms of each residential unit in the residential unit group receive the mutually different abnormality interlocking signals and relay the signals until relay transmission. A wide area abnormality warning system characterized by a set delay time.
In the wide area abnormality warning system according to claim 1 ,
When the dwelling unit group is less than the predetermined number of dwelling units, the mutually different relay delay times set in the case of the predetermined number of dwelling units are partially thinned out and set in the alarms of each dwelling unit less than the predetermined number. Wide-area abnormality warning system.
Alarms are placed in each of the multiple residential units in the monitored area,
The alarms arranged in each of the plurality of dwelling units send an abnormality interlocking signal so that the alarm operation of the alarm of the dwelling unit in which the abnormality has been detected spreads as time passes. A wide area abnormality warning system that relays transmission ,
Each of the alarms includes:
transmitting the abnormality interlocking signal so that a plurality of alarms installed in other neighboring dwelling units around the home unit enter a communication area;
When an abnormality is detected in the home unit , a predetermined abnormality interlock signal is generated that includes a unique residential unit address for each dwelling unit, a sequence number indicating the number of times of transmission, and a number of relays that increases by 1 from an initial value of 0 according to the number of times of transmission. sent multiple times with a time interval of
When receiving an abnormality interlocking signal that includes a dwelling unit address different from the home unit address from another residential alarm, if the number of relays included in the received abnormality interlocking signal is 1 or more, the number of relays is A wide-area abnormality warning system characterized in that an abnormality interlocking signal including a relay count decreased by 1 is relay-transmitted, and when the relay count included in the received abnormality interlocking signal is zero, the abnormality interlocking signal is not relay-transmitted.

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