JP3034972B2 - Judgment sensitivity setting method for self-fire alarm system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic fire alarm system which performs a forecast for early detection of a fire and operates an interlocking smoke control device in addition to detecting a fire. It relates to the setting method.

[0002]

2. Description of the Related Art As a self-fire alarm system, an analog sensor for detecting an analog amount of temperature and smoke is provided, and a monitoring device for monitoring a sensor output of the sensor determines a fire and issues a fire alarm. It judges that the output of the sensor has reached the forecast judgment level below the fire judgment level and makes a forecast, and when the output of the sensor reaches the interlocking judgment level above the fire judgment level, activates the smoke prevention equipment. Some have functions.

[0003]

However, in this type of self-ignition alarm system, since the forecast judgment level and the interlocking judgment level are uniquely determined according to the type of the sensor, the location where the sensor is installed is determined. There is a problem that it is not possible to perform a forecast or an interlocking operation according to the various conditions. In particular, for forecasting, it is highly necessary to adjust the determination sensitivity according to various conditions at the place where the sensor is installed.

[0004] The present invention has been made in view of the above-mentioned points, and an object thereof is to set a prediction judgment level and an interlocking judgment level according to various conditions of a place where a sensor is installed. It is an object of the present invention to provide a method for setting a determination sensitivity of a fire alarm system.

[0005]

According to the first aspect of the present invention, a fire which can be variably set within a certain allowable range so that a forecast judgment level can be set according to various conditions of a place where a sensor is installed. and determination level, Shi pair to the fire determination level
Sets of forecast judgment levels that take values with a certain relationship
Are stored in advance in the alarm device,
Set the fire judgment level and select the pattern.
Thus, the forecast judgment level is set .

[0006]

Furthermore, in the invention of claim 2, comprising an analog sensor that senses the analog quantity of temperature or smoke, along with to determine the fire performs fire alarm monitoring device for monitoring the sensing outputs of these sensors, In the self-fire alarm system, which operates the smoke prevention equipment when the output of the sensor reaches the interlocking judgment level equal to or higher than the fire judgment level, the interlocking judgment is made according to the conditions of the place where the sensor is installed In order to enable the level to be easily set, a plurality of sets of a fire determination level variably set within a certain allowable range and an interlocking determination level taking a value having a certain relationship with the fire determination level are set. Are stored in advance in the alarm device, and the interlocking determination level is set by setting the fire determination level and selecting the pattern.

Further, according to the invention of claim 3 , there is provided an analog sensor for sensing the analog amount of temperature or smoke, and a monitoring device for monitoring the sensing output of these sensors determines a fire and issues a fire alarm. When the output of the sensor reaches the forecast judgment level below the fire judgment level, a forecast is made, and when the output of the sensor reaches the interlocking judgment level above the fire judgment level, the smoke prevention equipment is activated. In a self-fire alarm system that performs an interlocking operation, a fire that can be variably set within a certain allowable range so that the forecast level and the interlocking judgment level can be easily set according to the conditions of the place where the sensor is installed A plurality of patterns in which a judgment level and a prediction judgment level and an interlocking judgment level taking a value having a certain relationship with the fire judgment level are stored in advance in the alarm device, The selection of the disaster determination level setting and pattern is to be set forecast determination level and the interlocking determination level.

According to the first to third aspects of the present invention, the fire determination level is determined.
Forecast judgment level that takes a value that has a certain relationship to
Or multiple patterns with one set of interlocking judgment levels
Information on the fire judgment level setting and pattern
Set forecast judgment level and interlocking judgment level by selection
The forecast judgment level and the interlocking judgment level
Forecast judgment by allowing setting without setting
The level and the interlocking determination level are made easy .

[0010]

[0011]

1 to 5 show an embodiment of the present invention. FIG. 2 shows a system configuration of a self-fire alarm system to which the present invention is applied.
And FIG. In deer warning systems of Figure 2, a receiver A and a plurality of repeaters B connected by transmission lines L _0, performs the mutual exchange of data by the loop transmission between the receiver A and the repeater B .

[0012] repeater B analog sensor S such as an analog smoke detector S ₁ and analog heat sensor S ₂ in the analog transmission line L ₁ is connected to, and set a unique address for each sensor S, the relay The device B sequentially accesses each of the sensors S in a cyclical manner, receives a sensing output from the sensor S, monitors the occurrence of a fire, and the relay device B makes a fire determination based on the output from each of the sensors S. Distributed processing is being performed. And
When a fire occurs, the repeater B sends data according to the fire situation to the receiver A.

Here, the receiver A stores a table in which a determination sensitivity for judging a fire is set, and transfers this table to the repeater B as indicated by an arrow in the main part configuration diagram of FIG. This causes the relay B to make a fire determination. Incidentally, it is wired to the telephone line L ₂ to allow a call between the receiver A and the repeater B. Meanwhile, with the address set to the address in general sensor S ₄ and the common detector to substantially short-circuit state between an output terminal with a low impedance when sensed fire to the analog transmission line L ₁ on this deer warning systems also the sensor S ₃ is adapted to be connected. However, in the case of the general detector S ₄ is required to be connected to an analog transmission line L ₁ through the repeater B '. Thus, since are a like general sensor S ₁ can be connected, it is provided with a function of performing storage processing in order to prevent a malfunction of these sensors S in the repeater B.

[0014] transmitter P for emergency communication other in the analog transmission line L ₁ is connected, so as to perform a call to route the telephone line L ₄ is a between the transmitter P and the repeater B It is. The end of the analog transmission line L ₁ is connected to terminator E, it is also available detect the disconnection of the analog transmission line L _1. The repeater B is connected to a smoke-eliminating device C and a district sound device D. When it is determined that the repeater B is a fire, the repeater B drives the district sound device D and the output of the sensor S is linked. When the determination level has been reached, the smoke control device C is driven. In addition, the table for the above-mentioned fire judgment also incorporates data for judgment about the forecast and interlocking,
The repeater B performs an interlocking operation based on this table.

Further, the self-fire alarm system is provided with a gas leak alarm and an alarm function at the time of another abnormal condition. Therefore, a general alarm input F and a gas leak alarm input G are inputted, and these inputs are not provided. In case of
(However, a separate audio device may be provided) to issue an alarm. The self-fire alarm system shown in FIG. 4 includes a repeater B for each of an analog type sensor S, a general sensor S, a district sound D, a smoke prevention device C, various alarm devices, and a gas leak sensor. In the case of this self-fire alarm system, the repeater B does not judge a fire, a gas leak, and the like, and the receiver A makes these judgments. Therefore, the receiver A has the functions of the receiver A and the repeater B of the self-fire alarm system described above.

In a conventional self-fire alarm system of this type, the sensitivity for judging a fire or the like is set as follows. That is, the forecast judgment level and the interlocking judgment level are set in one set pattern together with the fire judgment level. Table 1 shows examples of setting patterns. Note that the numerical values in Table 1 are such that the repeater B and the receiver A can identify the analog data output from the different types of analog sensors S in the same manner. The digitally output data is output in a substantially normalized number of stages (see Tables 3 and 4). Note that the fire determination level (the number of output stages for determining a fire, so-called fire determination sensitivity) in Table 1 is 25 for one type and 38 for two types.
There are 51 stages for three types.

[0017]

[Table 1]

As described above, in the conventional self-fire alarm system, since the forecast judgment sensitivity and the interlocking judgment sensitivity are uniquely determined according to the type of the sensor S, various conditions at the place where the sensor S is installed are considered. The matching judgment sensitivity could not be set. Therefore, in this embodiment, the receiver A changes the table, that is, the fire determination level, the prediction determination level, and the prediction determination level or the interlocking determination level according to various conditions of the place where the sensor S is installed. The level or the link determination level can be changed by the receiver A.

However, the following problem arises when the prediction determination sensitivity and the interlocking determination sensitivity can be variably set. That is, in the case of the pattern of Table 1 described above, the combinations in which the forecast determination level and the interlocking determination level are changed are as shown in Table 2.

[0020]

[Table 2]

The combination in this case is 11 × 1 × 26
= 286 (streets), which is a considerable number. In addition, the number of steps of the fire determination sensitivity is one, two, and three in accordance with the Fire Service Law.
To 51) can be set, and the number of combinations becomes enormous. FIG. 6 shows the settable ranges of the fire judgment level, the forecast judgment level, and the interlocking judgment level.
Shown in Here, the thick solid line in the figure indicates the setting range of the fire judgment level, the thin solid line indicates the setting range of the forecast judgment level, and the dashed line indicates the setting range of the interlocking judgment level. FIG. Fire judgment level of 3.0 to 18.0% /
M, a constant temperature sensor, which can be set in the range of 50 to 80 ° C. Tables 3 and 4 show the relationship between the analog amount output from the sensor and the smoke density / sensing temperature in FIG. In Tables 3 and 4, a minus sign indicates that setting is not possible, and a circle indicates that setting is possible. Further, the smoke density in Table 3 is measured by a dimming smoke densitometer.

[0022]

[Table 3]

[0023]

[Table 4]

That is, when the prediction judgment sensitivity and the interlocking judgment sensitivity can be variably set as described above, the setting range is enormous and the setting is complicated, and the prediction judgment level and the interlocking judgment level are variable. Even if a function for setting is provided, the function cannot be used effectively. Therefore, in the present embodiment, a plurality of patterns are set as a set of a fire determination level that can be set variably within a certain allowable range, and a forecast determination level and an interlocking determination level that take a value having a certain relationship with the fire determination level. Is stored in the receiver A,
The prediction judgment level and the interlocking judgment level can be automatically set by setting the fire judgment level and selecting a pattern.

FIG. 1 shows an example of a pattern stored in the receiver A. FIG. 1A shows a general setting state of the judgment level, and FIG. 1B shows a setting state of the judgment level when the prediction sensitivity is improved so that a fire can be detected early. Here, for each of the patterns, the forecast judgment level and the interlocking judgment level take values having a certain relation with the fire judgment level variably set within a certain allowable range. That is,
In the case of FIG. 1, the ratio of the forecast judgment level and the interlocking judgment level to the fire judgment level changes constantly. However, if not only the ratio of the forecast judgment level and the interlocking judgment level to the fire judgment level is made constant, but also the forecast judgment level and the interlocking judgment level take a value having a fixed relation to the fire judgment level. , Included in this embodiment. Then, a plurality of patterns different from the general determination level setting state as shown in FIG. 1B are stored in the receiver A in advance. For example, there is a pattern in which the forecast determination level is increased so as to prevent false reports.

In this manner, the setting of the fire judgment level and the selection of the pattern automatically sets the forecast judgment level and the interlocking judgment level without directly setting the respective levels. The determination level can be easily set. In addition, the above pattern may be selected in consideration of the situation of the site where the sensor S is installed, the time zone, and the like, and can be easily set without knowing various conditions of the location where the sensor S is installed. . For example, when the pattern shown in FIG. 1B is selected, it can be used for alerting an important area such as a computer room or alerting a time zone such as nighttime when no person is present.

In the present embodiment, the case has been described in which both the forecast judgment level and the interlocking judgment level are automatically set, but it is needless to say that each level may be individually set together with the fire judgment level.

[0028]

According to the present invention as described above, and capable of variably setting the fire determination level at a fixed tolerance range, and forecasts determination level takes a value having a constant relationship with pairs in this fire determination level
Are stored in advance in the alarm device.
And set the fire judgment level and select the pattern
By setting the forecast judgment level by performing
Levels can be set without having to set them directly.
The report determination level can be easily set.

[0029]

Furthermore, an analog sensor for detecting an analog amount of temperature or smoke is provided, and a monitoring device for monitoring the detection output of these sensors determines a fire and issues a fire alarm.
In the self-fire alarm system that performs an interlocking operation that activates the smoke prevention equipment when the output of the sensor reaches the interlocking judgment level equal to or higher than the fire judgment level, the fire judgment level that can be variably set within a certain allowable range and this fire A plurality of patterns each including a set of an interlocking determination level having a value having a certain relationship with the determination level are stored in the alarm device in advance, and the interlocking determination level is set by setting the fire determination level and selecting a pattern. Then, the interlocking determination level can be set according to various conditions at the place where the sensor is installed, and the interlocking determination level can be easily set.

Furthermore, an analog sensor for detecting the analog amount of temperature and smoke is provided, and a monitoring device for monitoring the output of these sensors is used to judge a fire and give a fire alarm. A self-fire that performs an interlocking operation that activates the smoke prevention equipment when the output of the sensor reaches an interlocking determination level that is equal to or higher than the fire determination level. In the information system, a plurality of patterns are set in advance as a set of a fire determination level that can be variably set within a certain allowable range, and a forecast determination level and an interlocking determination level that take a value having a certain relationship with the fire determination level. If the alarm is stored in the alarm device and the forecast judgment level and the interlocking judgment level are set by setting the fire judgment level and selecting the pattern, the conditions at the place where the sensor is installed can be adjusted. Flip can set the forecast decision levels and the interlocking determination levels, and easily can be set forecast determination level and the interlocking determination level.

[Brief description of the drawings]

FIGS. 1A and 1B are explanatory diagrams each showing an example of a pattern of determination sensitivity stored in a receiver according to an embodiment of the present invention.

FIG. 2 is a system configuration diagram of a self-fire alarm system to which the above can be applied.

FIG. 3 is a configuration diagram showing only a main configuration of the above.

FIG. 4 is a system configuration diagram of another self-fire alarm system to which the above can be applied.

FIGS. 5A and 5B are explanatory diagrams showing setting ranges of determination sensitivity of a smoke detector and a heat detector.

[Explanation of symbols]

 A Receiver B Repeater S Detector

Claims (3)

(57) [Claims] 1. A fire alarm is provided by providing an analog sensor for sensing an analog amount of temperature or smoke, and a monitoring device monitoring the output of the sensor is used to judge a fire, and an output of the sensor is used to judge a fire. in deer warning systems for performing forecast determines that reached the following forecast decision level level, constant tolerance and capable of variably setting the fire determination level in the range, a value having a constant relationship with pairs in this fire determination level Forecast to take
A plurality of patterns, each of which is a set of the judgment level,
Alarm device, set the fire judgment level, and
A determination sensitivity setting method for a self-fire alarm system, comprising: setting a forecast determination level by selecting a turn . 2. An analog sensor for sensing temperature and analog amount of smoke.
Monitoring sensors that monitor the sensing outputs of these sensors.
A fire is determined by a visual observation device and a fire alarm is issued.
Output has reached the interlocking judgment level higher than the fire judgment level
Self-fire alarm system that performs interlocking operation to activate smoke suppression equipment
System that can be set variably within a certain allowable range
There is a certain relationship between the level and this fire determination level.
And the interlocking determination level that takes the
Stored in the alarm device in advance, and
Set the interlocking judgment level by setting and selecting the pattern.
A determination sensitivity setting method for a self-fire alarm system, comprising : 3. A fire alarm by judging a fire by a monitoring device which is provided with an analog sensor for detecting an analog amount of temperature and smoke, and monitors a detection output of the sensor.
Has reached the forecast judgment level below the fire judgment level
A self-fire alarm system that performs an interlocking operation that activates smoke prevention equipment when the output of the sensor reaches the interlocking judgment level equal to or higher than the fire judgment level and makes a variable setting within a certain allowable range Forecast judgment that takes a possible fire judgment level and a value that has a certain relation to this fire judgment level
A plurality of patterns each having a set of a fixed level and an interlocking determination level are stored in the alarm device in advance, and a forecast determination level and an interlocking determination level are set by setting a fire determination level and selecting a pattern. The method for setting the judgment sensitivity of the self-fire alarm system .