JP3102538B2 - Fire alarm - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire alarm system for detecting a smoke density, a temperature, and the like, and issuing a fire alarm.

[0002]

2. Description of the Related Art There has been known a fire alarm system as disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 12-12398. FIG.
2 is a block diagram of this fire alarm device. Referring to FIG. 12, in this fire alarm device, analog sensors E-1 to En that detect smoke, temperature, and the like due to a fire are provided in a receiver 50.
The receiver 50 is connected to the transmission line 51 drawn out of the communication device, and determines a fire based on analog data from the analog sensors E-1 to En.
At this time, the receiver 50 has a graphic display 52
When the receiver 50 performs arithmetic processing on the analog data of the analog sensor and predicts that the alarm level will be reached after a predetermined time, the receiver 50 outputs a pre-alarm and, based on the arithmetic processing, displays a smoke on the vertical axis. , Temperature, etc., and a fire prediction curve 59 with time taken on the horizontal axis is displayed on the graphic display unit 52. Specifically, one of the analog sensors E-1 to E-n
When the analog data from one of the analog sensors, for example, E-1 exceeds a predetermined level, the receiver 50 reads the analog data from the analog sensor E-1 a plurality of times, starts a prediction operation, and obtains the prediction operation. The remaining time until the analog data of the smoke density reaches the alert level of, for example, 20% is calculated from the calculated result, and when the remaining time is less than a predetermined time, a pre-alarm is output. By the output of the pre-alarm, a pre-alarm display, a message display, and a trend switch display are performed on the graphic display unit, and the fire prediction curve 59 can be displayed by the operator pressing the trend switch display portion with a finger.

When a fire prediction curve 59 based on a pre-alarm for the analog sensor E-1 is displayed, in addition to this, the time change of the analog data actually detected by the analog sensor E-1 is displayed. It can also be plotted.

As described above, in the fire alarm device of FIG.
When a pre-alarm is output based on the analog data prediction calculation, a trend switch is displayed on the graphic display unit 52, and by operating this trend switch display part, a fire prediction curve 59 can be displayed. it can. By clearly grasping the pre-alarm point and the point at which the alarm level is reached on the fire prediction curve 59, the operator intends to appropriately determine the situation after the pre-alarm and take a countermeasure.

[0005] In particular, by plotting and displaying the time change of actual analog data in addition to the fire prediction curve 59, it is possible to accurately judge whether the change is abrupt change above the fire prediction curve or non-fire data below the fire prediction curve. It is intended that the situation judgment and the countermeasures after the pre-alarm be taken more appropriately.

[0006]

However, in the above-described conventional fire alarm device, only the graph after the pre-alarm is output is displayed on the graphic display unit 52. ,
There was a problem that it was not possible to take quicker and more accurate situation judgments and measures at an early stage.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and to provide a fire alarm device capable of promptly and more appropriately allowing an operator to make a situation judgment and a countermeasure at an early stage. I have.

[0008]

In order to achieve the above object, the inventor of the present application opposed the idea in the above document which emphasized the situation after the pre-alarm was output and the countermeasures. In particular, we focused on the situation before the pre-alarm was output and the need to pay particular attention to countermeasures.

[0009] Based on this viewpoint, the invention according to claims 1 to 4 has display means capable of displaying a trend graph of a sensor terminal, and the display means comprises a trend graph of a certain sensor terminal. Is displayed, the trend graph until the analog level of the sensor terminal reaches a predetermined level is enlarged. As a result, the operator can quickly and appropriately perform a situation determination, a countermeasure, or a maintenance / inspection operation at an earlier stage than before.

[0010] In particular, in the invention according to the second and third aspects, in the fire alarm device according to the first aspect, the graduation interval related to the analog level becomes larger as the analog level becomes lower.
The analog graph is set smaller as the analog level becomes higher, and the trend graph until the analog level reaches the predetermined level is displayed in detail. Is displayed. Thereby, the tendency of fire after the analog level reaches a predetermined level can also be grasped.

According to the present invention, there is provided a display means for displaying a trend graph of the sensor terminal, and a display switching means for switching a display format of the display means. By this means, it is possible to display a trend graph in an easy-to-view format.

Further, the invention according to claim 8 and claim 9 is as follows:
5. A display unit capable of displaying a trend graph of a sensor terminal, wherein the display unit displays the trend graph of the sensor terminal when displaying the trend graph of a certain sensor terminal. The information is displayed in the format described in the paragraph 1, and a trend graph of a nearby sensor terminal having a close relationship with the sensor terminal can be superimposed and displayed on a trend graph of the sensor terminal. This allows
It is easy to compare outputs at the same time, and since the trend graph until the analog level reaches a predetermined level is displayed in a large scale, it is possible to more accurately and easily make a fire judgment and the like. The surrounding situation can be grasped more accurately.

According to the tenth and eleventh aspects of the present invention, when a trend graph of a sensor terminal having a normal sensitivity is displayed, a trend graph of a high sensitivity type sensor terminal is superimposed as a proximity sensor terminal. It can be displayed. As a result, the display becomes easier to see, and a fire judgment or the like can be performed more accurately and easily.
The surrounding situation can be grasped more accurately.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration example of a fire alarm device according to the present invention. In the fire alarm device of FIG. 1, sensor terminals D-1 to Dn for detecting analog data such as smoke and temperature are connected to the transmission line 7, and the sensor terminals D-1 to D-n are connected to the transmission line 7.
Based on the analog data sent from -n via the transmission path 7, the central device 1 determines a fire.

The central processing unit 1 includes a central processing unit 2 for performing overall control, a memory (for example, ROM) 3 in which a control program for the central processing unit 2 is stored, and data and tables required for processing. (For example, a RAM) 4 in which information and the like are stored, a display unit 5, and an alarm output unit 6.

According to a control program stored in the memory 3, the central processing unit 2 cyclically calls each of the sensor terminals D-1 to D-n sequentially by, for example, address polling. When analog data such as smoke and temperature is returned from the calling sensor terminal,
The analog data is arithmetically processed to make a fire determination or the like. Specifically, for example, when the level of the analog data reaches the first reference level (fire level), it is determined that a fire has occurred, an alarm signal is output, and a fire alarm is issued from the alarm output unit 6. It is controlled to be performed. When the level of the analog data is lower than the first reference level (fire level), but reaches a second reference level at which a fire may occur, an alarm signal is output.

The display unit 5 has a screen configuration as shown in FIG. 2, for example. In this example, the display unit 5
Consists of a touch panel display, etc.
It has an output display unit for displaying and outputting data and the like, and an input display unit for performing key input and the like when an operator touches with a finger. In other words, the display unit 5 serves as an output display unit,
Alternatively, a data display area 11 for displaying that the analog level has reached the second reference level or reaching the first reference level by an alarm signal, or for displaying a trend graph described later, A message display area 12 for displaying a message or the like is provided.
As an input display section, a trend display key 13, a return key 14, a proximity key 15, and the like are provided.

Here, the trend graph means that the vertical axis indicates smoke,
It is a graph in which analog levels such as temperature are taken, and the horizontal axis is time, which may directly display analog data sent from the sensor terminal, or JP-A-2-12398. As shown in the above, a fire prediction curve predicted on the basis of analog data may be used, or further, analog data may be superimposed and displayed on the fire prediction curve. Regardless of the display, the analog data sent from each sensor terminal is stored in, for example, the memory 4 for displaying a trend graph.

The trend display key 13 is used to switch the display contents of the data display area 11 so that a trend graph is displayed in the data display area 11, and the return key 14 is used to switch the data display area 11 Is switched to the state before the display of the trend graph. That is, when the operator wants to see a trend graph relating to a certain sensor terminal, the operator touches the trend display key 13 while the information relating to the sensor terminal is displayed on the display unit 5. The trend graph of the machine can be displayed in the data display area 11. By touching the return key 14 after viewing the trend graph, the display state of the data display area 11 can be switched to the original state.

In the present invention, the trend display key 13 and the return key 14 are always displayed on the display unit 5 and can be operated at any time to display a trend graph at any time. Is possible. More specifically, when the display timing of the trend graph in the present invention is compared with the display timing of the trend graph in the above-described conventional technology, in the conventional technology, the trend switch display corresponding to the trend display key 13 has a pre-alarm output. Therefore, the trend graph is displayed after the pre-alarm is output. However, in the present invention, information on a certain sensor terminal is displayed on the display unit 5. In such a state, the trend graph of the sensor terminal can be displayed at any time. That is, in the present invention, the trend graph can be displayed when the trend display key 13 is operated by the operator, and therefore, at any time desired by the operator (for example, the start of the process of monitoring an abnormality such as a fire). At the same time, or when performing maintenance, etc.), this can be displayed. Therefore, the trend graph can be displayed even before the analog level reaches the second reference level. For example, a trend graph can be displayed simultaneously with the start of monitoring.

By the way, in a conventional fire alarm device having such a trend graph display function, as shown in FIG. 3, for example, the trend graph is set so that the vertical axis (analog level) scale interval is set in the entire analog level range. They are displayed evenly. In this case, in FIG. 3, for example, the analog level (smoke density value) is 0% / m to 5% / m.
The range (range from the second reference level to the first reference level) (the second range to reach the reference level) regarded as normal region A _1, the range of 5% / m~10% / m regarded as a warning area _{a 2, 10% / m~15%} / m danger area range (first reference level (fire level) or more regions) when viewed as a a _3, each of the regions a _1, a _2, a ₃ are equally divided, the weights (details) of information that the operator can obtain from the trend graphs displayed in the respective areas A ₁ , A ₂ , A ₃ are the same (equal). Become.

However, in the trend graph shown in FIG. 3, the probability that a fire has actually occurred is high in the order of the normal region A ₁ , the warning region A ₂ , and the dangerous region A ₃ , and the graph shows the level of the warning region A ₂ . , The fire may already be progressing considerably. In this case, the measures to be taken are limited to evacuation guidance, for example. Therefore, detailed graph displays in these areas A ₂ and A ₃ are as follows. It is not as useful as an operator when performing early judgment such as a fire or maintenance inspection. In contrast, detailed graphical representation of a normal area A ₁ to the analog level reaches a predetermined level, on the operator fires whether circumstances determination, performed rapidly and accurately measures and, This is particularly useful for easily and properly performing maintenance and inspection.

Under such an idea, in the embodiment of the present invention, the scale interval for the analog level in the trend graph until the analog level reaches the predetermined level (for example, the trend graph before the analog level reaches the warning area) is increased. hand,
The trend graph is displayed large.

More specifically, as shown in FIG. 4, the scale interval on the vertical axis of the trend graph is set larger as the analog level is lower, and is set smaller as the analog level is higher. As such, they are uneven. That is, in the example shown in FIG. 4, the normal region (i.e. normal state), the A _1, a trend graph, and displays increased in a large scale intervals, warning area A _2, toward the hazard area A _3, scale intervals of the vertical axis Is gradually reduced to be displayed smaller.

In the fire alarm device having such a configuration, a trend graph showing a tendency of a change in an analog level up to a predetermined stage (for example, an analog level in a normal state before reaching a warning area) is displayed at a large scale interval. The operator can grasp in detail the change (trend) of the analog level before reaching the predetermined stage, and quickly and appropriately determine the situation of fire occurrence and take countermeasures at an early stage. Can be performed.

That is, the change in the analog level up to the predetermined stage largely depends on the contamination of the sensor, the situation of the surrounding environment, and the like. Because it is difficult to determine whether the situation is due to a change in the surrounding environment, etc., there has been a high rate of misjudgment as a result of contamination of the sensor or changes in the surrounding environment, etc. ,
As in this embodiment, the trend graph indicating the analog level up to the predetermined stage is displayed in large scale at large scale intervals, so that the change in the analog level is caused by the occurrence of fire, the sensor is dirty, and the surrounding environment is not changed. It is possible to easily and accurately determine whether the change is due to a change in the situation or the like.

[0027] For example, in FIG. 4, the change in the analog levels up to a predetermined stage, as indicated at C _1,
When it increases almost monotonically with the passage of time, it is possible to know that a fire has occurred before reaching a predetermined stage (for example, the second reference level). On the other hand, the change in the analog level before reaching the predetermined phase, as shown at C _2, also increases the analog level until time t _1, the time t ₁ ~t
When reduced at the time of _2, an increase of the analog level up to time t ₁ is due to changes in the status of sensors of dirt and ambient environment, the time that it is not a fire t
It is possible to easily and accurately grasp at the time of ₁ ~t _2.

Further, since the graph indicating the analog level before reaching the predetermined stage is displayed in a large size, maintenance and inspection can be greatly facilitated. The situation and the like can be grasped in more detail.

On the other hand, in the example shown in FIG. 4, the graph of the analog level after reaching the predetermined stage (for example, the second reference level) has a smaller graduation interval than the graph of the analog level before reaching the predetermined stage. Is displayed. Thus, after reaching the predetermined stage, the trend graph is displayed small at small scale intervals, but even in this case, the trend graph is displayed, so that the operator can easily understand the general tendency of the fire (fire is rapidly increasing). General tendency, such as progress or slow progress) can be immediately known. That is, since the change in the analog level after reaching the predetermined stage usually increases only monotonically, it does not need to be displayed in detail, and a rough display (display with a reduced scale interval) is sufficient. With this display, the operator can immediately know the general tendency of the fire.

In the example shown in FIG. 4, the graduation intervals on the vertical axis indicating the analog level are also unequal in the respective regions (ranges) of A ₁ , A ₂ and A ₃ (for example, in the normal region). A ₁
Also in the inner, more analog level is low, increasing the scale interval, and gradually reduced the scale interval according to the analog level is high) is, instead of this, as shown in FIG. 5, the regions A ₁ , A ₂ , and A ₃ , the graduation intervals on the vertical axis are made uniform, and different areas A ₁ , A ₂ , and A ₃ are used.
The scale intervals may be different. That is, the normal region A ₁
In this case, the graduation interval may be set to be uniformly large, and the graduation interval may be set to be smaller toward the warning area A ₂ and the danger area A ₃ .

Furthermore, with regard to the display of the trend graph, only (trend graph in the example normal region A ₁₎ trend graph until the analog level, as shown in FIG. 6 reaches a predetermined stage, the scale intervals of the vertical axis It can be enlarged and displayed larger. In the example of FIG. 6, the graduation intervals are made equal, but the graduation intervals may be made unequal, such that the lower the analog level, the larger the graduation intervals. As described above, by displaying only the trend graph until the analog level reaches a predetermined stage, it is possible to more easily and accurately make a fire judgment or the like in a normal state. Since the trend graph after the stage has been reached (for example, the trend graph in the warning area and the danger area) is not displayed, the operator is urged to start the fire trend (fire progressing rapidly or slowly) after this stage. There is a problem that the trend graph cannot be grasped only from this trend graph. In order to solve such a problem, for example, a scale display switch 18 is added in FIG. 1, and the scale display switch 18 is initially set so that the trend graph is displayed in a display format as shown in FIG. In advance, until the analog level reaches a predetermined level, the trend graph is displayed in large scale intervals, and when the analog level reaches the predetermined level, the trend graph is displayed over the entire range of the analog level. By switching the scale display switch 18, a trend graph can be displayed over the entire analog level range. Specifically, the mode shown in FIG. 6 can be switched to the mode shown in FIG. 3, FIG. 4, or FIG. As a result, the graph after the analog level reaches the predetermined stage can be seen, and the operator can grasp the tendency of fire.

The scale display switch 18 can be switched between the mode in which the entire area is uniformly displayed as shown in FIG. 3 and the mode in which the entire area is unevenly displayed as shown in FIG. 4 or FIG. Can be switched and displayed by the operation of.

For example, initially, the scale display switch 18 is set so that the trend graph is displayed in a display format as shown in FIGS. 4 and 5, and until the analog level reaches a predetermined stage, the trend display is switched. When the analog level reaches a predetermined level, the scale display switch 18 is switched so that the trend graph is displayed, for example, in a format as shown in FIG. The trend graph can be displayed evenly.

As described above, when the scale display switch 18 is configured to be switched by the operation of the operator, the operator can display a desired type of trend graph at any time. On the other hand, it is also possible to configure the fire alarm device such that automatic switching control is performed instead of such manual operation. That is, when the analog level displayed in the predetermined mode reaches a predetermined stage, the display can be automatically switched to another mode. For example, initially, when a trend graph is displayed in a display format as shown in FIG. 6, when the analog level reaches a predetermined stage,
It is also possible to configure the fire alarm device so that the trend graph is automatically displayed, for example, in the format shown in FIG. 3, FIG. 4, or FIG. According to this, when the analog level partially displayed as shown in FIG. 6 reaches a predetermined stage, the display is automatically switched to the full area display format instead of the manual operation. The fire tendency can be easily grasped without operating the switch 18.

In the present invention, the central device 1 of FIG.
When a trend graph relating to one sensor terminal is displayed, a trend graph (hereinafter, referred to as a “proximity sensor terminal”) based on analog data from another sensor terminal having a close relationship with the sensor terminal (hereinafter, referred to as a proximity sensor terminal). (Referred to as a nearby trend graph) can also be displayed in the data display area 11 by being superimposed on the trend graph.

As the nearby terminal having a close relationship with the sensor terminal, for example, a sensor terminal having a close position with respect to the sensor terminal can be used. Alternatively, sensor terminals closely related to each other may be used. More specifically, for example, as disclosed in Japanese Patent Publication No. 2-30555, the sensor terminals D-1 to D-n are grouped into a plurality of groups, and the sensor terminals in one group It can be treated as a proximity sensor terminal. FIG. 7 shows a case where nine sensor terminals arranged in the same room are grouped as one example. This grouping can be easily realized by providing, for example, a comparison table between the addresses of the sensor terminals and the group numbers on the central device 1 side. The comparison table is, for example, the memory 4
Should be registered in advance. Thereby, in the example of FIG. 7, a certain sensor terminal, for example, the proximity sensor terminal of D2 is defined as D-1, D-3 to D-9, and the sensor terminal, for example, the proximity sensor of D4. Terminal is D
-1 to D-3 and D-5 to D-9.

Instead of uniquely defining the proximity sensor terminal as in the example shown in FIG. 7, the user can arbitrarily define the proximity sensor terminal independently. For example, when a high sensitivity type sensor terminal is used together with a normal sensitivity sensor terminal in a computer room, etc.
(For example, in FIG. 1, when D-1 is a sensor terminal of normal sensitivity and D-2 is a sensor terminal of high sensitivity type), the sensor terminal D-2 of high sensitivity type is replaced with a sensor terminal of normal sensitivity. It can also be defined as a proximity sensor terminal for terminal D-1.

As described above, in either case where the proximity sensor terminal is uniquely defined or arbitrarily defined, when the proximity sensor terminal is defined for a certain sensor terminal, It is preferable to register this relationship in the memory 4 or the like by using a comparison table or the like.

The proximity key 15 is displayed when information on a certain sensor terminal is displayed on the display unit 5 when a proximity sensor terminal is registered for this sensor terminal. And the trend display key 1
When the proximity key 15 is operated in a state where the trend graph of the sensor terminal is displayed in the data display area 11 by 3, the proximity trend graph of the proximity sensor terminal is superimposed on the trend graph and displayed. It has become. When the proximity key 15 is operated,
When the neighborhood key 15 is further operated in this state, the neighborhood key 15 is turned off, the reverse trend display or the blink display disappears, and the neighborhood trend graph disappears, and only one trend graph is displayed. Return.

The neighborhood trend graph may be the same as the trend graph, or may be a simplified version of the trend graph. For example, when the trend graph is a time change of analog data from the sensor terminal or a fire prediction curve, the neighborhood trend graph may be a time change of analog data from the proximity sensor terminal or a fire prediction curve. , May be thinned out at regular time intervals. Further, a difference value or the like between analog data from the sensor terminal and analog data from the nearby sensor terminal may be used as a nearby trend graph. In any case, in order to display the trend graph and the neighborhood trend graph, it is necessary to store analog data from all sensor terminals in the memory 4 for each sensor terminal. In addition,
For example, even when displaying only a fire prediction curve or the like as disclosed in Japanese Patent Application Laid-Open No. Hei 12-12398, it is necessary to store analog data of all sensor terminals.
Even in the case where the neighboring trend graph is displayed so as to be superimposed on the trend graph as in the present invention, almost the same memory capacity as when only the trend graph is displayed is required.

For example, the central processing unit 2 of the central unit 1
All the sensor terminals D-1 to D-n perform one polling at a cycle of 3 seconds, collect analog data from all the sensor terminals, and once every two polls (that is, 6 seconds). The analog data from all the sensor terminals can be stored in the memory 4 as analog data for the trend graph for each sensor terminal. However, in order to save memory capacity, it is appropriate that the retention period of the analog data for the trend graph from each sensor terminal is several minutes (for example, about 5 minutes) retrospectively from the present time.

Alternatively, separately from this, the maximum and minimum values of the analog data from each sensor terminal for one hour may be set in the past 2
The data can be stored in the memory 4 for four hours and used as analog data for the trend graph, or the maximum and minimum values of analog data from each sensor terminal per day can be stored in the memory 4 for the past 30 days. However, this can also be used as analog data for the trend graph.

Only one of the three types of analog data for trend graphs having different time widths of the past 5 minutes, the past 24 hours, and the past 30 days as described above may be stored in the memory 4. Alternatively, all three types may be stored, and any one of them may be selected and displayed.

Next, the operation of the fire alarm device capable of displaying such a neighborhood trend graph will be described. In the following, for the sake of simplicity, it is assumed that only two sensor terminals D-1 and D-2 are connected to the transmission path 7 in the configuration of FIG. Central processing unit 2 of central unit 1
For example, according to a control program stored in the memory 3, each of the sensor terminals D-1 to D-2 is sequentially and cyclically called by address polling or the like, and analog signals such as smoke and temperature are sent from the called sensor terminals. When the data is returned, monitoring is performed based on the analog data.
At this time, for example, if the trend display key 13 is operated at an arbitrary time before the analog data reaches the second reference level, from that time on, the analog graph for a trend graph of one sensor terminal, for example, D-1. As shown in FIG. 8, data is read from the memory 4 and a data display area 11 of the display unit 5 displays, for example, a trend graph TG1 showing a time change of analog data of the sensor terminal D-1 over the past 5 minutes, for example. Is displayed. In this example, the sensor terminal D-1 is an analog sensor for detecting smoke density, and therefore, the vertical axis of the trend graph TG1 is an analog level of smoke density (% / m). FIG.
In the example of, the scale interval on the vertical axis of the trend graph TG1 is
The type shown in FIG. 4 or FIG. 5, that is, uneven.

The central processing unit 2 checks whether a nearby sensor terminal is registered with respect to this sensor terminal D-1 by using a comparison table or the like.
When “−2” is registered in advance, the proximity key 15 is displayed on the display unit 5. When the operator operates the proximity key 15 in a state where the trend graph TG1 of the sensor terminal D-1 is displayed, the central processing unit 2 further accesses the memory 4 and the proximity sensor of the sensor terminal D-1. The analog data for the trend graph of the sensor terminal D-2 registered as the terminal is read out from the memory 4 and given to the display unit 5. As a result, the data display area 11 of the display unit 5 has the sensor terminal D-1 as shown in FIG.
With the trend graph TG1 of this, this sensor terminal D
The trend graph of the sensor terminal D-2 having a relationship close to −1, that is, the proximity trend graph TG2 can also be superimposed and displayed.

At this time, when the types (smoke, temperature, sensitivity, etc.) of the sensor terminal D-1 and the proximity sensor terminal D-2 are exactly the same, the trend graph TG as shown in FIG.
1 and the vertical axis of the neighborhood trend graph TG2 are common to each other,
When only one kind of scale is required and the trend graph TG1 of the sensor terminal D-1 is displayed as shown in FIG. 4, FIG. 5, or FIG. 6, the trend graph TG of the sensor terminal D-2 is displayed.
2 can also be displayed at the same scale interval.

On the other hand, if the type of the proximity sensor terminal D-2 is
When the type is different from the type of the sensor terminal D-1, if only the scale of the trend graph TG1 is displayed, it becomes difficult to quantitatively grasp the analog data based on the neighboring trend graph (for example, TG2). In addition, it is preferable to display a scale suitable for the proximity sensor terminal. When the trend graph TG1 of the sensor terminal D-1 is displayed with unequal scale intervals on the vertical axis as shown in FIG. 4, FIG. 5 or FIG. The trend graph TG2 of the proximity sensor terminal D-2 can be displayed at a scale interval according to this display mode.

More specifically, FIG. 10 shows a case where the sensor terminal D-1 is of the type of smoke detection and the proximity sensor terminal D-2, which is closely related to this, is of the type of temperature detection. As shown, the trend graph TG of the sensor terminal D-1 is shown.
If the scale M ₁ of the vertical axis of 1 is such as shown in FIG. 4, for example, the scale M ₂ of the vertical axis in the vicinity of the trend graph TG2
Can also be displayed superimposed on the trend graph TG1 by making the scale intervals unequal. In the example of FIG.
The unit of the scale M1 for the trend graph TG1 is smoke density (% / m), and the unit of the scale M2 for the neighborhood trend graph TG2 is temperature (° C.). Thereby, even if the type of the proximity sensor terminal D-2 is different from the type of the sensor terminal D-1, it is easy to quantitatively grasp the analog data based on both the trend graph TG1 and the proximity trend graph TG2. Become.

Further, in this case, the type of the proximity sensor terminal can also be displayed in the data display area 11. In FIG. 10, when the type of the proximity sensor terminal D-2 is a constant temperature sensor, a display B to that effect is displayed in the data display area 11.
Is displayed further. As a result, it is possible for the operator to easily determine the type of the proximity sensor terminal, and it is possible to prevent a comprehensive determination error. Even when the type of the proximity sensor terminal is the same as the type of the sensor terminal, the type of the proximity sensor terminal can be made clear by displaying the same.

As described above, since the near trend graph is superimposed on the trend graph, the analog data output from the sensor terminals having a close relationship to each other at the same time can be easily compared. Thus, the fire judgment can be made more accurately, and the surrounding situation can be more accurately grasped. For example, the trend graph TG of the sensor terminal D-1
1 and the proximity trend graph TG of the proximity sensor terminal D-2
In both cases 2, when the analog level tends to increase with time, it can be reliably determined that an abnormality has occurred. In contrast, the sensor terminal D-1
In the trend graph TG1, the analog level increases with time. However, in the proximity trend graph TG2 of the proximity sensor terminal D-2, the analog level does not increase, or the analog level increases very little. Can be determined to have a high possibility of malfunction of the sensor terminal D-1, for example, malfunction due to aging or the like. Further, for example, when it is desired to perform a maintenance check, the trend display key 13 can be operated to perform a maintenance check of each sensor terminal. At this time, that is, during maintenance and inspection,
By superimposing and displaying the trend graph of the neighboring sensor terminals together with the trend graph of one sensor terminal, the states of the sensor terminals can be compared at the same time, making it easier to compare the sensor terminals with each other. Thus, maintenance and inspection can be performed more easily and more accurately.

In particular, when the sensor terminal D-1 is a sensor having a normal sensitivity and the nearby terminal D-2 is a high-sensitivity type sensor, these trend graphs are displayed in a superimposed manner as a fire judgment. And so on. FIG. 11 shows an example in which a trend graph TG2 based on analog data from a high-sensitivity type sensor terminal is superimposed on a trend graph TG1 based on analog data from a normal-sensitivity sensor terminal. . In the example of FIG. 11, both of the sensor terminals are:
It is of the same kind, and scale (scale) M ₂ of the longitudinal axis of the scale M ₁ and trend graph TG2 of the vertical axis of the trend graph TG1, both, in the form as shown in FIG. 4, the scale (scale ) The intervals are displayed unevenly. As described above, the trend graph TG2 from the high-sensitivity type sensor terminal is also displayed, so that it is possible to more easily and accurately make a fire determination or the like in a normal state.

The trend graphs TG1 and TG2 from both sensor terminals can be displayed not only in the format shown in FIG. 4 but also in the format shown in FIG. 5 or FIG. The trend graphs TG1 and TG2 from both sensor terminals D-1 and D-2 can be displayed in a conventional format as shown in FIG. 3, and even in this case, a high-sensitivity type sensor terminal is used. Is superimposed and displayed, so that the display is easier to see than before, and it is possible to more easily and accurately make a fire judgment or the like. However, the display shown in FIG. 4, FIG. 5 or FIG. In comparison, it is not possible to easily and accurately make a fire determination or the like until the analog level reaches a predetermined stage.

In the above example, for convenience of explanation, only two sensor terminals D-1 and D-2 are connected to the transmission line 7, but two or more sensor terminals are connected. The present invention can be similarly applied to the case where
When the advance report key 16 is pressed in a state where the trend graph of a certain sensor terminal and the proximity trend graph of the proximity sensor terminal are displayed, for example, one more than the sensor terminal that has output the alarm signal. The trend graph of the sensor terminal that previously output the alarm signal can be displayed in the data display area 11, and the next report key 1
By pressing 7, the trend graph of the sensor terminal that has output the alarm signal one time after the sensor terminal that has output the alarm signal can be displayed in the data display area. By sequentially operating 17, it is possible to display a trend graph of all sensor terminals that have output an alarm signal so far.

In the above embodiment, the display unit 5 is a touch panel display.
It may be configured by a T display or the like, and instead of touching the trend display key 13 with a finger, it is also possible to point and operate with a pointing device such as a mouse. Alternatively, the trend display key 13 and the like can be separately provided not on the display unit 5 but on an input device such as a keyboard. Also, color on the display unit 5 - using a display, trend graph after the analog level has reached a predetermined level (e.g., the trend graph in the region A _2, A ₃₎
May be displayed in a specific color, for example, red. Further, the trend graph and the neighborhood trend graph may be displayed in different colors. When a color display is not used for the display unit 5, the trend graph may be displayed by a solid line, and the neighboring trend graph may be displayed by a broken line, for example, so as to distinguish each other.

[0055]

As described above, according to the first to fourth aspects of the present invention, there is provided a display means capable of displaying a trend graph of a sensor terminal, and the display means comprises a sensor terminal. When the trend graph of the device is displayed, the trend graph until the analog level of the sensor terminal reaches a predetermined level is displayed in a large scale, so that it is possible to determine the situation, take a countermeasure, or perform maintenance and inspection. The work can be performed promptly and appropriately at an earlier stage than before.

In particular, according to the second and third aspects of the present invention, in the fire alarm device according to the first aspect, the graduation interval relating to the analog level becomes larger as the analog level becomes lower.
The analog graph is set smaller as the analog level becomes higher, and the trend graph until the analog level reaches the predetermined level is displayed in detail. Is displayed, it is possible to grasp the tendency of fire after the analog level reaches a predetermined stage.

According to the fifth to seventh aspects of the present invention, there are provided display means for displaying the trend graph of the sensor terminal and display switching means for switching the display format of the display means. The display switching means can display a trend graph in an easy-to-view format.

According to the eighth and ninth aspects of the present invention, there is provided a display means capable of displaying a trend graph of a sensor terminal, wherein the display means displays a trend graph of a certain sensor terminal. The trend graph of the sensor terminal is displayed in a format according to any one of claims 1 to 4, and the trend graph of a nearby sensor terminal having a close relationship with the sensor terminal is displayed by the sensor. Since it is possible to superimpose and display the trend graph of the terminal, it is easy to compare the output at the same time, and since the trend graph until the analog level reaches a predetermined level, it is displayed large, Fire judgment and the like can be performed more accurately and easily, and the surrounding situation can be grasped more accurately.

According to the tenth and eleventh aspects of the present invention, when a trend graph of a sensor terminal having a normal sensitivity is displayed, a trend graph of a high sensitivity type sensor terminal is displayed as a proximity sensor terminal. Since the superimposed display is possible, the display can be more easily viewed, the fire determination or the like can be performed more accurately and easily, and the surrounding situation can be grasped more accurately.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration example of a fire alarm device according to the present invention.

FIG. 2 is a diagram illustrating an example of a screen configuration of a display unit.

FIG. 3 is a diagram for explaining a conventional trend graph display format.

FIG. 4 is a diagram for explaining an example of a trend graph display format according to the present invention.

FIG. 5 is a diagram for explaining an example of a trend graph display format according to the present invention.

FIG. 6 is a diagram illustrating an example of a trend graph display format according to the present invention.

FIG. 7 is a diagram illustrating an example of defining a proximity sensor terminal.

FIG. 8 is a diagram showing a state in which only a trend graph of one sensor terminal is displayed.

FIG. 9 is a diagram showing a state in which a trend graph of a neighboring sensor terminal is superimposed and displayed on a trend graph of one sensor terminal.

FIG. 10 is a diagram showing a state in which a trend graph of a neighboring sensor terminal is superimposed and displayed on a trend graph of one sensor terminal.

FIG. 11 is a diagram showing a state where a trend graph of a neighboring sensor terminal is superimposed and displayed on a trend graph of one sensor terminal.

FIG. 12 is a configuration diagram of a conventional fire alarm device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Central unit 2 Central processing unit 3, 4 Memory 5 Display unit 6 Alarm output unit 7 Transmission line 11 Data display area 12 Message display unit 13 Trend display key 14 Return key 15 Nearby keys D-1 to D-n Sensor terminal TG1 , TG2 trend graph A ₁ normal region A ₂ warning area A ₃ the hazardous area

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-298577 (JP, A) JP-A-5-242261 (JP, A) JP-A-4-165910 (JP, A) JP-A-60-1985 135000 (JP, A) JP-A-2-12398 (JP, A) JP-A-3-273113 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G08B 17/00-17 / 12 G09G 5/00 G09G 5/36

Claims (11)

(57) [Claims] 1. A display means for displaying a trend graph of a sensor terminal, wherein the display means, when a trend graph of a certain sensor terminal is displayed, an analog level of the sensor terminal reaches a predetermined level. A fire alarm device characterized in that the above trend graphs are displayed in large scale. 2. The fire alarm device according to claim 1,
In the fire alarm device, the trend graph is set such that a scale interval related to an analog level is set to be larger as the analog level is lower, and is set smaller as the analog level is higher, and is displayed unevenly. 3. The fire alarm device according to claim 1,
In the trend graph, when the analog level is divided into a plurality of level ranges, the scale intervals related to the analog level are set equally in each level range, and are set differently between different level ranges. A fire alarm device characterized in that a lower level range is set larger and a higher analog level range is set smaller and displayed. 4. The fire alarm device according to claim 1,
The fire alarm device according to claim 1, wherein only a trend graph until the analog level reaches a predetermined level is displayed on the display means. 5. Display means for displaying a trend graph of a sensor terminal, and display switching means for switching a display format of the display means, wherein the display means displays the trend graph uniformly over the entire analog level range. 4. A first mode for displaying at a scale interval, and a second mode for displaying a trend graph as described in any one of claims 1 to 3, wherein the display switching means includes a first mode for displaying the trend graph. The fire alarm device is adapted to switch between the first mode and the second mode. 6. A display means for displaying a trend graph of the sensor terminal, and display switching means for switching a display format of the display means, wherein the display means displays the trend graph over the entire analog level range. A first mode and a second mode for displaying a trend graph as described in claim 4, wherein the display switching means includes the first mode.
The fire alarm device is adapted to switch between the first mode and the second mode. 7. The fire alarm device according to claim 5, wherein the display switching means automatically switches to another mode when the analog level displayed in the predetermined mode reaches a predetermined stage. A fire alarm device characterized by switching to a display in a mode. 8. A display in which a trend graph of a sensor terminal can be displayed in a fire alarm device in which a plurality of sensor terminals are connected to a transmission path and process data from the plurality of sensor terminals to determine a fire or the like. Means for displaying a trend graph of a certain sensor terminal when displaying a trend graph of the certain sensor terminal.
Display in the format described in any one of the above, at this time, the trend graph of the proximity sensor terminal having a close relationship with the sensor terminal can be superimposed and displayed with the trend graph of the sensor terminal A fire alarm device characterized by the following. 9. The fire alarm device according to claim 8,
The trend graph of the proximity sensor terminal is also displayed in the format according to any one of claims 1 to 4, when the trend graph of the proximity sensor terminal is superimposed and displayed on the trend graph of the sensor terminal. A fire alarm device characterized in that it is adapted to perform a fire alarm. 10. A fire alarm device in which a sensor terminal having a normal sensitivity and a sensor terminal having a high sensitivity type are connected to a transmission line, comprising a display means capable of displaying a trend graph of the sensor terminal. The display means is capable of superimposing and displaying a trend graph of a high sensitivity type sensor terminal as a nearby sensor terminal when displaying a trend graph of a normal sensitivity sensor terminal. apparatus. 11. The fire alarm device according to claim 10, wherein the trend graph of the normal sensitivity sensor terminal and the trend graph of the high sensitivity type sensor terminal are provided. A fire alarm device, which can be superimposed and displayed in the format described in (1).