JP3038410B2 - Fire discrimination method and fire receiver, repeater, and self-fire alarm system for implementing the method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a fire discrimination method and a fire receiver, a repeater, and a self-fire alarm system for implementing the method.

[Prior art] Recently, many high-rise buildings have been built, so that early detection of fires and prompt evacuation guidance can be performed.
Installation of disaster prevention equipment is mandatory for each building.

FIG. 9 shows an example of the configuration of a self-fire alarm system, which is such a disaster prevention equipment. A plurality of repeaters 200 are connected to a signal line l derived from a fire receiver 100 provided at a management center or the like. Are connected, and a plurality of sensors (smoke sensors, heat sensors, etc.) S are connected to the sensor lines IS derived from the respective repeaters 200. Then, the detection signal of each of the sensors S ... is sampled by the relay device 200 by the polling method to determine the presence or absence of the alarm,
When it is determined that the alarm has occurred, an alarm signal with the detector address and the relay address is transmitted from the repeater 200 to the fire receiver 100 via the signal line l to identify the fire occurrence location and issue an alarm notification. It is made to be performed.

By the way, in such a self-fire alarm system, of course, it is necessary to promptly notify the occurrence of a fire,
False alarms must be avoided as much as possible, and conflicting conditions make design very difficult. Therefore, in order to satisfy such conflicting conditions as much as possible, when it is determined that any one of the sensors has issued an alert, the alert is temporarily suspended for a predetermined accumulation time, and after the standby, the alert is determined again. In such a case, a method was used in which an alert was immediately issued.

However, in such a method, since the accumulation time is fixed, for example, even when the detected temperature of the heat sensor slightly exceeds the alarm level or greatly exceeds the alarm level, it waits for a predetermined accumulation time. Only the same operation to be issued later can be performed, and fine control in which the detection signal level of the sensor is reflected in the accumulation time cannot be performed.

[Problems to be Solved by the Invention] The present invention proposed in view of the above situation changes the accumulation time until the alarm is issued according to the level of the detection signal transmitted from the sensor, thereby reducing false alarms. It is another object of the present invention to provide a fire discriminating method capable of promptly performing detailed fire discrimination according to a situation.

Another object of the present invention, which is proposed at the same time, is to provide a fire receiver, a repeater, and a self-fire alarm system for implementing the fire determination method.

[Means for Solving the Problems] According to a first aspect of the present invention, there is provided a method for determining a fire according to the first aspect of the present invention, which samples a detection signal transmitted from each sensor by a polling method. For each sensor, weight data according to the detection signal level is allocated and stored sequentially, and for each of the sensors, the integrated value of weight data after the integration start point where the first weight data is stored is calculated as the integration start point. If a predetermined value is exceeded during a period from when the predetermined time elapses, it is determined that a fire has occurred at that time.If the integrated value does not reach the predetermined value after the predetermined time has elapsed, a fire has occurred. The operation of clearing the stored weight data by determining that there is no data is repeatedly performed.

The fire discriminating method according to the second aspect of the present invention is the first aspect.
In the fire discrimination method described in (1), the point at which zero weight data is stored is skipped, and the point at which weight data exceeding zero is stored is set as the integration start point.

The fire discriminating method of the present invention according to claim 3 is configured such that every time a detection signal transmitted from each sensor is sampled by a polling method, weight data according to the detection signal level is assigned and stored. For each of the sensors, the integrated value of the weight data after the integration start point where the first weight data was stored exceeded the predetermined value in a period from the integration start point until a predetermined time has elapsed. Sometimes, while determining that a fire has occurred at that time, the basic operation of determining that no fire has occurred when the integrated value does not reach the predetermined value after the predetermined time has elapsed is sequentially determined by the integration start point storing weighting data. It is designed to be carried out repeatedly.

According to a fourth aspect of the present invention, there is provided a fire determination method according to the third aspect.
In the fire discrimination method described in (1), the point at which zero weight data is stored is skipped, and the point at which weight data exceeding zero is stored is set as the integration start point.

In the repeater according to the fifth aspect of the present invention, a multiplex transmission control unit is provided for each sensor line and transmits and receives data to and from each sensor by a multiplex signal. A system memory storing at least a weight data table for weighting the sampled detection signal of each sensor, and referring to the weight data table stored in the system memory, sampled by the multiplex transmission control unit. A signal processing unit is provided for obtaining weight data according to the detection signal level of each sensor, and determining whether or not each sensor has issued a warning according to the integrated value of the weight data.

In the fire receiver according to the present invention, a multiplex transmission control unit is provided for each sensor line and transmits and receives data to and from each sensor by a multiplex signal, and the multiplex transmission control unit. A system memory storing at least a weight data table for weighting the detection signal of each sensor sampled by each sensor, and referring to the weight data table stored in the system memory, each sampled by the sampling means. And a signal processing unit for determining weight data according to the detection signal level of the sensor, and determining whether or not each sensor has a warning in accordance with the integrated value of the weight data.

The self-fire alarm system according to the present invention described in claim 7 has a configuration in which the repeater described in claim 5 is combined with a conventional detector and a fire receiver.

The self-fire alarm system according to the present invention described in claim 8 has a configuration in which the fire receiver described in claim 6 is combined with a conventional sensor and, if necessary, a conventional repeater.

[Operation] In the method according to the first aspect of the present invention, every time a detection signal transmitted from each sensor is sampled by the polling method, weight data corresponding to the detection signal level is assigned and stored sequentially. Then, for each sensor, the integrated value of the weight data after the integration start point where the first weight data is stored exceeds the predetermined value in a period from the integration start point until a predetermined time elapses. When it is determined that a fire has occurred at that time. However, if the integrated value does not reach the predetermined value when the predetermined time has elapsed, it is determined that no fire has occurred, and the operation of clearing the stored weight data is repeated to make a fire determination.

According to the method of the present invention described in claim 2, in the method of the present invention described in claim 1, when zero weight data is detected, the weight data exceeding the first zero is detected instead of the integration start point. The fire discrimination operation is performed with the time point as the integration start point.

In the method according to the third aspect of the present invention, each time a detection signal transmitted from each sensor is sampled by the polling method, weight data corresponding to the detection signal level is assigned and stored. Then, for each sensor, the integrated value of the weight data after the integration start point where the first weight data is stored exceeds the predetermined value in a period from the integration start point until a predetermined time elapses. In such a case, the operation until the fire is determined at that time is the same as the method described in the first aspect. However, if the integrated value does not reach the predetermined value when the predetermined time has elapsed, it is determined that no fire has occurred, and the integration start point storing the weight data is sequentially moved up and repeated to perform the determination operation.

In the method of the present invention described in claim 4, in the method of the present invention described in claim 3, when zero weight data is detected, the integration start point is not set, and weight data exceeding the first zero is detected. The fire discrimination operation is performed with the time point as the integration start point.

In the repeater according to the present invention, a detection signal transmitted from a sensor connected to each sensor line is received by a multiplex transmission control unit and transmitted to a signal processing unit. The detection signal is weighted with reference to the weight data table stored in the memory to obtain weight data.
The presence / absence of a warning from each sensor is determined according to the integrated value of the weight data, and when the warning is determined, a warning signal is transmitted to the fire receiver side.

In the fire receiver according to the sixth aspect of the present invention, the detection signal transmitted from the sensor connected to each sensor line is received by the multiplex transmission control unit directly or via a repeater, and is transmitted to the signal processing unit. After transmission, the signal processing unit refers to the weight data table stored in the system memory and weights the detection signal to obtain weight data. The presence / absence of a warning of each sensor is determined according to the integrated value of the weight data, and when the warning is determined, a necessary warning is issued.

In the system according to the present invention, the detection signal transmitted from the sensor connected to each sensor line is transmitted to the repeater, and the repeater detects the detection signal via the multiplex transmission control unit in the signal processing unit. The signal is received, and the detection signal is weighted with reference to the weight data table stored in the system memory. Then, the presence or absence of an alert from each sensor is determined according to the integrated value of the weight data. When the alert is determined, an alert signal is transmitted to the fire receiver side, and the transmitted alert is transmitted to the fire receiver side. Upon receiving the signal, necessary alarm notification is performed.

In the system according to the present invention, the detection signal transmitted from the detector connected to each detector line is transmitted to the fire receiver directly or via a repeater. The signal is received by the signal processing unit via the multiplex transmission control unit, and the detection signal is weighted with reference to the weight data table stored in the system memory. The presence / absence of a warning from each sensor is determined according to the integrated value of the weight data, and when the warning is determined, a necessary warning is issued.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a flow chart for explaining the fire discrimination method according to the first aspect of the present invention, and the operation will be described with reference to the figure.

A timer for measuring the predetermined time T is started and integration is started, and sampling of the detection signal is started until the timer expires.

After sampling the detection signal, weight data is assigned to the obtained detection signal and stored, and an integrated value of the weight data from the integration start point is obtained.

When the integrated value of the weight data is equal to or more than a predetermined value, it is determined that the alarm is issued. When the integrated value of the weight data does not reach the predetermined value, the detection signal is repeatedly sampled until the timer times out. Then, the integrated value of the weight data is compared and determined with a predetermined value.

If the total of the weight data does not reach the predetermined value even when the timer expires, the fire determination is performed by clearing all the weight data stored during the predetermined time and repeating the above operations again. (See steps 1000 to 1007 in FIG. 1 above.)

Next, the present invention described above will be described more specifically using actual numerical values.

In this example, the detection signal of the detector (smoke detector) is sampled every three seconds, and the weight is 0 when the smoke density is less than 5%, the weight is 1 when the smoke density is 5% or more and less than 10%, and the smoke density is 10% or more and 15%. % Is assigned as weight 3 and smoke density 15% or more is assigned as weight 5. When the integrated value of the weight data exceeds 20, the alarm level is set.
The predetermined time T is set to 60 seconds.

The operation in this case will be described with reference to FIGS. 1A (a) and 1 (b). In FIG. 1A (a), the time when the first weight data 0 is stored is set as the integration start point, and 0,1,3,5,5,5,5 are sequentially stored, and the last weight data 5
Is stored, the integrated value exceeds 20, and since the predetermined time T has not elapsed, it is determined that the alarm has been issued.

However, in FIG. 1A (b), the weight data 0 is stored twice consecutively from the integration start point, and subsequently the weight data 1 is stored.
Since the data is stored 19 times in succession, even if the time T has elapsed, since the integrated value of the weight data does not exceed 20, it is determined to be non-warning and the weight data is cleared once. When the weight data 3, 3, 5, 5, 5, 5 are sequentially stored with the time point at which the weight data 1 is subsequently stored as the integration start point, the integrated value is calculated at the time point at which the last weight data 5 is stored. The alert discrimination is made beyond 20.

As described above, when the weight data corresponding to the smoke density is 1, the alarm is not determined unless the alarm data is continued for at least 60 seconds, and when the smoke density is high, the alarm is determined in a short time. False alarms can be suppressed and detailed fire discrimination according to smoke density can be performed.

FIG. 2 is a flow chart for explaining the fire discrimination method according to the present invention described in claim 2, and is a flow chart shown in FIG. 1 (steps 1000 to 1007).
Steps 2000 to 2003 are added to the operation contents, and the same portions are denoted by the same reference numerals and description thereof will be omitted.

In this method, first, a detection signal is sampled and weight data is assigned. When the obtained weight data is 0, the next detection signal is sampled without setting the integration start point. The same operation as in the case shown in FIG. 1 is performed with the time when the weight data exceeding is sampled as the integration start point. (See steps 1000 to 1007, 2000 to 2003 in FIG. 2).

In this method, as shown in FIG. 2A, the point of time when the weight data 0 is first stored twice skips the integration start point, and the point when the weight data 1 is stored the third time is the first time. It becomes the integration start point, and then the weight data 3,5,5,5,
When 5 is successively stored, the accumulated value exceeds 20 at the time when the last weight data 5 is stored, and the alarm determination is performed. Therefore, the alert is determined at the same time as in the case of FIG. 1 described above, but since the time when the zero weight data is stored is not set as the integration start point, the signal processing can be reduced.

On the other hand, as shown in FIG. 2A (b), the weight data 0 is first stored twice consecutively, and subsequently, the weight data 1 is stored continuously 19 times, and then the weight data 1 is further stored. In such a case, the integration start point is the time when the weight data 1 is first stored, and when the last weight data 1 is stored, the integrated value becomes 20 within a predetermined time T, and the alarm is determined. You. Therefore, by skipping the time point at which the weight data of zero is stored, it is possible to perform the alarm determination earlier than in the case shown in FIG. 1A (b).

FIG. 3 is a flow chart for explaining the fire discrimination method of the present invention according to claim 3, wherein steps 3000 to 3005 are added to the flow chart (steps 1000 to 106) shown in FIG. It is the operation content that
The same portions are denoted by the same reference numerals and description thereof will be omitted.

If the sum of the weight data does not reach the predetermined value even when the timer expires, the weight data stored at the integration start point is cleared, and the integration start point is moved up to the next weight data storage time.

A new detection signal is sampled, weighted data is allocated and stored, and when the integrated value of the weighted data exceeds a predetermined value, it is determined that an alarm is issued. However, when the integrated value of the weight data does not exceed the predetermined value,
Is repeated. (The above is Step 1000 in Figure 3.
~ 1006,3000 ~ 3005).

In this fire discriminating method, when the weight data is stored in the order shown in FIG. 3A, the same alert discriminating operation as in the case of FIG. Also, as shown in FIG. 3A (b), the first two
When the weight data 0 is stored only once and the weight data 1 and 3 are stored after the 19 consecutive weight data 1 are stored, the time when the first 0 weight data is stored is regarded as the integration start point. Since the integrated value of the weight data does not exceed the predetermined value 20 within the predetermined time T, the alarm is determined to be non-alert, and the time when the next weight data 0 is stored is set as the integration start point. Since the integrated value of the weight data does not exceed the predetermined value 20 within the range, it is determined that no alarm is issued. However, since the integrated value of the weight data exceeds 20 within a predetermined time T from the time when the third weight data 1 is stored as the integration start point, it is determined that the alarm is issued.

As described above, in the method of the present invention, even if it is once determined to be non-alert, since the past data is reflected in the subsequent fire determination, a more accurate fire determination suitable for the environment is performed early. It becomes possible.

FIG. 4 is a flow chart for explaining the fire discrimination method according to the present invention as set forth in claim 4. The flow chart of FIG. 2 (steps 1000 to 106, 2000 to 200)
The operation contents are the operation contents obtained by adding steps 4000 to 4006 to 3), and the same portions are denoted by the same reference numerals and description thereof will be omitted.

According to this method, when the integrated value of the weight data does not exceed the predetermined value even after the predetermined time has elapsed (the timer has expired), the weight data at the integration start point is cleared, and then a new detection signal is sampled. The weight data is allocated and stored. If the weight data at the integration start point at this time is 0, this operation is repeated until the weight data at the integration start point is no longer 0, and the weight data exceeding zero is used as the integration start point. The integrated value is calculated, and if the integrated value exceeds a predetermined value within a predetermined time, it is determined that the alarm is issued. If the integrated value does not exceed the predetermined value, a series of these operations is repeated. (Refer to steps 1000 to 106, 2000 to 2003, 4000 to 4006 in FIG. 4).

In this discriminating method, when the weight data shown in FIG. 4A (a) is stored, the same discriminating operation as in FIG. 2A (a) is performed, but the discriminating operation shown in FIG. 4A (b) is performed. When the weight data is stored, the time point at which the first weight data 1 is stored is the integration start point, and the weight data becomes 1 continuously for 19 times.
When the weight data 3 is stored after is stored, the integrated value of the weight data exceeds 20, and since it is within the predetermined time T, it is determined to be an alert.

As described above, according to the method of the present invention, when the weight data 0 is stored, the integration start point is skipped, so that the determination processing operation can be reduced, and the history of the weight data can be used for the subsequent determination processing. Since it is reflected, more accurate fire determination can be performed at high speed.

In the above description, the case where a smoke detector is connected is described as an example. However, in the case where a heat detector is connected, for example, a weight of 0 below 50 ° C., a weight of 50 ° C. or more and 60 ° C. Less than 1 weight, less than 70 ° C less than 70 ° C, 3 weight, 70 ° C or more 5
Assuming that the integrated value of the weight data is 20, the alarm level is set as the alarm level, and the predetermined time is set to 20 seconds to make an accurate alarm discrimination according to the surrounding situation as in the case of the smoke detector. It can be done quickly.

In the above description, the alarm level is described as being fixed at a predetermined value.However, for example, the alarm level may be changed between day and night, or the alarm level may be linked to the alarm of another sensor. It is also possible to set the forecast level and the interlocking level for activating other smoke prevention equipment separately from the alarm level to perform fine control. Is also possible.

FIG. 5 is a block diagram showing an example of the configuration of the repeater 1 according to the present invention described in claim 5;
A multiplex transmission control unit 16 is provided for each sensor line IS and transmits and receives data to and from each sensor (not shown) by a multiplex signal. A system memory storing at least a weight data table for weighting the detection signals of the detectors, 10 refers to the weight data table stored in the system memory 14, and refers to each of the sensors sampled by the multiplex transmission control unit 16. A signal processing unit that obtains weight data according to the detection signal level, and determines whether or not each sensor has issued a warning according to the integrated value of the weight data. Further, 12 is an address setting unit for setting a repeater address unique to the repeater, 13 is a temporary memory for temporarily storing data during the processing of the signal processing unit 10, and 11 is a signal processing unit via the signal line l. It is a multiplex transmission unit that transmits and receives data by multiplexed signals between 10 and a fire receiver (not shown).

The multiplex transmission control unit 16 has a configuration including a sensor line signal processing unit 16a, a transmission memory 16b, and a sensor line multiplex transmission unit 16c. Reference numeral 15 denotes a switching connection circuit provided between the multiplex transmission control units 16 and the signal processing unit 10 for transmitting and receiving data.

 Next, the operation of the repeater 1 having such a configuration will be described.

The monitoring start signal is sequentially transmitted from the signal processing unit 10 to the sensor line signal processing unit 16a of the multiplex transmission control unit 16 via the switching connection circuit 15.

The sensor line signal processing unit 16a receives the monitoring start signal, sequentially sends out monitoring signals by a polling method to the sensor line IS via the sensor line multiplexing transmission unit 16c by a multiplex signal, and outputs the monitoring signals to the sensor (not shown) ) Are sequentially stored in the transmission memory 16b, and the stored detection signals are sequentially transmitted to the signal processing unit 10 via the switching connection circuit 15.

The signal processing unit 10 temporarily stores the transmitted detection signal in the temporary memory 13 and sequentially converts the detection signal into corresponding weight data by referring to the weight data table stored in the system memory 14 to temporarily store the detected detection signal. To memorize.

Thereafter, the signal processing unit 10 performs a discrimination process according to the above-described fire discrimination method (a method according to any one of claims 1 to 4) according to a program stored in the system memory 14, and a fire is discriminated. Sometimes, the multiplex transmission unit 11
The alarm signal is transmitted to the fire receiver (not shown) through the signal line 1 through

FIG. 6 shows a fire receiver 2 according to the present invention.
Is a block diagram showing an example of the configuration of the repeater 1. In the configuration of the repeater 1, the multiplex transmission unit 11 and the address setting unit 12
Except for, the alarm notification means 21 is provided instead, and the same portions are denoted by the same reference numerals and description thereof will be omitted. Note that the signal processing unit 20 is given a different symbol because it is necessary to perform signal processing unique to the fire receiver.

In the fire receiver 2 having such a configuration, the multiplex transmission control unit 16 receives the detection signal transmitted directly from the detector (not shown) via the sensor line IS or through the repeater, and the signal processing unit The operation up to obtaining the weight data at 20 and performing the fire determination is the same as in the case of the above-described repeater 1, but if the signal processing unit 20 has determined the fire, an alarm signal is sent to the alarm notification means 21. The information is transmitted and necessary alarm notification is performed.

FIG. 7 shows a configuration example of a self-fire alarm system (corresponding to claim 7) in which the above-described repeater 1 is incorporated, and the same parts are denoted by the same reference numerals. In the system having such a configuration, as described above, the detection signal of each sensor S connected to the sensor line IS is weighted by the repeater 1 to determine the presence / absence of the alarm, and when the alarm is determined, An alarm signal is transmitted to the fire receiver 100 via the signal line l. Then, in the fire receiver 100, the signal processing unit 101 receives the alarm signal via the multiplex transmission unit 102, and the memory unit 103
In addition to performing necessary alarm processing in accordance with the program stored in the alarm notification unit 104, a signal is transmitted to the alarm notification unit 104 to perform alarm notification.

FIG. 8 shows a configuration example of a self-fire alarm system (corresponding to claim 8) in which the above-described fire receiver 2 is incorporated, and the same portions are denoted by the same reference numerals. In this system, the detection signal of each sensor connected to the sensor line lS is directly transmitted to the fire receiver 2 side, and the detection signal of the sensor connected to each sensor line lS is once relayed. 20
In some cases, the signal is relayed to the fire receiver 2 and transmitted to the fire receiver 2 as a multiplexed signal with a repeater address. In any case, the detection signal transmitted to the receiver 2 is generated by the above-described method. Is determined, and when the alarm is determined, the alarm notifying unit 21 performs alarm notification and performs necessary alarm processing.

[Effects of the Invention] As can be understood from the above description, according to the fire discriminating method described in any one of claims 1 to 4, the alarm is issued by an integrated value of weight data according to smoke density and heat. Since the discrimination is performed, the accumulation time is changed according to the fire occurrence situation, and it is possible to prevent false alarms and quickly perform detailed alarm discrimination according to the situation.

According to the present invention described in claim 5, claims 1 to 4 are provided.
And a repeater with improved reliability for implementing the fire discrimination method described in any one of the above items.

According to the present invention described in claim 6, according to claims 1 to 4,
A fire receiver with improved reliability for implementing the fire discrimination method described in any one of the above items can be provided.

According to the present invention described in claim 7, it is possible to provide a self-fire alarm system with improved reliability by incorporating the repeater described in claim 5.

According to the present invention described in claim 8, it is possible to provide a self-fire alarm system having improved reliability by incorporating the fire receiver described in claim 6.

[Brief description of the drawings]

FIG. 1 is a flowchart for explaining the method of the present invention of claim 1, FIGS. 1A and 1B are diagrams for explaining the principle of the operation, FIG. 2 is a flowchart for explaining the method of the present invention of claim 2, 2A (a) and 2 (b) are diagrams for explaining the principle of the operation, FIG. 3 is a flowchart for explaining the method of the present invention according to claim 3, and FIGS. 3 (a) and 3 (b) are for explaining the principle of the operation. FIGS. 4A and 4B are flow charts for explaining the method of the present invention, FIGS. 4A and 4B are diagrams for explaining the principle of the operation, and FIG. 5 is a block diagram of the repeater according to the fifth embodiment. FIG. 6 is a block diagram of a fire receiver according to claim 6, FIG. 7 is a block diagram of a self-fire alarm system according to claim 7, and FIG. 8 is claim 8. FIG. 9 is a structural example of a conventional self-fire alarm system, and FIG. 9 is a structural example of a conventional self-fire alarm system. [Description of Signs] 1 ... Repeater 10,20 ... Signal processing unit 14 ... System memory 16 ... Multiple transmission control unit 2 ... Fire receiver lS ... Sensor line S ... Sensor

Claims (8)

(57) [Claims] 1. Every time a detection signal transmitted from each sensor is sampled by a polling method, weight data corresponding to the detection signal level is allocated and stored sequentially. If the integrated value of the weight data after the integration start point storing the weight data exceeds a predetermined value in the period from the integration start point to the lapse of a predetermined time, it is determined that a fire has occurred at that time. On the other hand, if the integrated value does not reach the predetermined value after the predetermined time has elapsed, it is determined that no fire has occurred and the operation of clearing the stored weight data is repeatedly performed. 2. Every time a detection signal transmitted from each sensor is sampled by a polling method, weight data corresponding to the detection signal level is allocated and stored sequentially. If the integrated value of the weight data after the integration start point that stores the weight data exceeding zero exceeds the predetermined value in the period from the integration start point until the predetermined time elapses, a fire occurs at that time On the other hand, if the integrated value does not reach the predetermined value after the predetermined time has elapsed, it is determined that no fire has occurred, and the operation of clearing the stored weight data is repeatedly performed. 3. Each time a detection signal transmitted from each sensor is sampled by a polling method, weight data corresponding to the detection signal level is assigned and stored sequentially. If the integrated value of the weight data after the integration start point storing the weight data exceeds a predetermined value in the period from the integration start point to the lapse of a predetermined time, it is determined that a fire has occurred at that time. On the other hand, when the integrated value does not reach the predetermined value when the predetermined time has elapsed, the basic operation of determining that no fire has occurred is repeated by sequentially moving up the integration start point storing the weight data and repeating the operation. Judgment method. 4. Whenever a detection signal transmitted from each sensor is sampled by a polling method, weight data corresponding to the detection signal level is allocated and stored sequentially. If the integrated value of the weight data after the integration start point that stores the weight data exceeding zero exceeds the predetermined value in the period from the integration start point until the predetermined time elapses, a fire occurs at that time On the other hand, when the integrated value does not reach the predetermined value when the predetermined time has elapsed, the basic operation of determining that no fire has occurred is repeated by sequentially raising the integration start point storing weight data exceeding zero. A fire discrimination method that is performed by using 5. A fire alarm is discriminated by receiving detection signals multiplexed by a polling method from a plurality of sensors connected to each sensor line, and when the alarm is judged, the fire alarm is sent to the fire receiver side. A multiplex transmission control unit, which is provided for each sensor line and transmits and receives data by a multiplex signal to and from each of the sensors, A multiplex transmission control unit that stores at least a weight data table for weighting the detection signal of each sensor sampled by the multiplex transmission control unit; The controller obtains weight data according to the detection signal level of each sensor sampled by the control unit, and determines whether each sensor has an alert based on the integrated value of the weight data. Relay characterized in that a that the signal processing unit. 6. A detection judgment is made by directly or indirectly receiving detection signals multiplexed and transmitted by a polling method from a plurality of sensors connected to each sensor line, via a repeater,
A multiplex transmission control unit, which is provided for each sensor line and transmits and receives data by a multiplex signal to and from each of the detectors, in a fire receiver configured to perform an alarm notification when the alarm is determined, A system memory storing at least a weight data table for weighting the detection signals of the respective sensors sampled by the multiplex transmission control unit; and referring to the weight data table stored in the system memory, the sampling means And a signal processing unit for determining the presence / absence of an alert of each sensor in accordance with the weighted data corresponding to the detection signal level of each sensor sampled in the above, and according to the integrated value of the weight data. Fire receiver. 7. A repeater receives the detection signal of each sensor connected to the sensor line to determine whether or not there is an alarm, and when the alarm is determined, sends an alarm signal to the fire receiver side. In the self-fire alarm system in which the alarm is issued, the repeater is provided for each sensor line, and multiplex transmission control for transmitting and receiving data to and from each sensor by a multiplex signal is provided. Unit, a system memory storing at least a heavy data table for weighting the detection signal of each sensor sampled by the multiplex transmission control unit, and referring to the weight data table stored in the system memory, A signal for determining weight data according to the detection signal level of each sensor sampled by the multiplex transmission control unit, and determining whether or not each sensor has an alarm according to the integrated value of the weight data. A self-fire alarm system comprising a processing unit. 8. A fire receiver side receives a detection signal of each sensor connected to the sensor line directly or via a repeater to determine whether or not there is an alarm, and when the alarm is determined, an alarm is issued. In the self-fire alarm system configured to perform the notification, the fire receiver is provided for each sensor line, and a multiplex transmission control unit that transmits and receives data to and from each sensor by a multiplex signal. A system memory storing at least a weight data table for weighting the detection signals of the respective sensors sampled by the multiplex transmission control unit; and referring to the weight data table stored in the system memory, A signal processing unit that obtains weight data according to the detection signal level of each sensor obtained by the transmission control unit, and determines whether or not each sensor is alerted according to the integrated value of the weight data; A self-fire alarm system comprising: