JP7658797B2 - Evacuation route display device - Google Patents

Description

The present invention relates to an evacuation route display device, and in particular to an evacuation route display device that displays evacuation routes and assists evacuation in the event of a fire in a facility such as a building or an underground mall.

When a disaster such as a fire occurs in a building or underground mall and people inside begin to evacuate, they often begin the evacuation without knowing detailed information such as the location of the fire. As a result, when there are multiple evacuation routes within a facility, people may not be able to make the appropriate decision as to which evacuation route to choose.

Conventionally, an invention has been proposed in which a pre-defined space is divided into a number of areas, with sensors and transmitters installed in each area, the area where a disaster has occurred is identified using the sensors, and evacuation guidance information is created to avoid that area and guide people to evacuation exits, and the evacuation guidance information is output from transmitters installed in the areas and received by a mobile phone or the like, which then displays a guidance map showing evacuation routes (see, for example, Patent Document 1).
Regarding indoor evacuation guidance, an invention has been proposed for a disaster prevention support system that uses a mobile terminal to communicate one's own location information, fire location information, and evacuation routes to disaster prevention personnel (see, for example, Patent Document 2).

JP 2011-8591 A JP 2015-153177 A

In the invention of the evacuation guidance system described in Patent Document 1, multiple evacuation routes are presented, but it is up to the evacuees to decide which route will lead them to the safest evacuation exit. As a result, evacuees are forced to evacuate with anxiety because they have to choose an evacuation route without a clear basis for doing so, and there is also the problem that, due to the emergency situation, they may not be able to make a calm decision and may mistakenly choose a relatively risky evacuation route.

The disaster prevention support system invention described in Patent Document 2 can display a map showing the current location of a mobile device and evacuation routes on the display unit of the mobile device, but the orientation of the map may not match the orientation of the mobile device, and even when looking at the map displayed on the display unit, it may not be possible to intuitively recognize in which direction to evacuate. Also, with this system, there is an issue that, because it is an emergency situation, evacuees may not be able to make calm decisions and may mistakenly select a relatively risky evacuation route.

The present invention has been made with attention to the above-mentioned problems in mind, and its purpose is to provide an evacuation route display device that can assist in selecting the safest evacuation route from among multiple evacuation routes, thereby allowing evacuees to evacuate with peace of mind.
Another object of the present invention is to provide an evacuation route display device that allows a person to intuitively recognize in which direction they should evacuate by looking at the evacuation route information displayed on the display unit.

In order to solve the above problems, the present invention provides:
An evacuation route display device having a display unit having a display screen, a receiving unit capable of receiving detector information from a plurality of fire detectors and/or fire receivers, the detector information including alarm information indicating the occurrence of a fire and address information, a storage unit capable of storing the received information, and a control unit for performing calculations, the device being disposed midway along a passageway,
the storage unit prestores information on an internal structure including a passageway and an emergency exit of a building floor on which the evacuation route display device is installed, installation position information of the plurality of fire detectors on the building floor, and an evacuation route from the evacuation route display device to the emergency exit of the building floor,
The control unit is configured to have the function of, when the receiving unit receives the alarm information from the fire detector, selecting a plurality of evacuation routes based on the relationship between the installation location of the fire detector that sent the alarm information and the stored evacuation routes, and displaying the selected plurality of evacuation routes on the display screen of the display unit.

According to the evacuation route display device having the above-described configuration, multiple evacuation routes are selected based on the relationship between the installation location of the fire detector that sent out the alarm information and the pre-stored evacuation routes, and the selected multiple evacuation routes are displayed on the display screen of the display unit, thereby assisting evacuees in selecting the safest evacuation route from among multiple evacuation routes.
Furthermore, because the evacuation route display device is installed in the building's corridors, the orientation of the map matches the direction of the actual evacuation exits on each floor, so evacuees can intuitively recognize which direction to evacuate to by looking at the evacuation route information displayed on the display. This eliminates the risk of selecting the wrong evacuation route even in an emergency, and helps evacuees select a safer evacuation route.

Here, preferably, the storage unit stores in advance a predetermined calculation formula for calculating a value for evaluating the safety of each evacuation route,
The control unit is configured to calculate an evaluation value for each evacuation route using the specified calculation formula based on the relationship between the installation location of the fire detector that sent the alarm information and the evacuation route, and to display the multiple evacuation routes on the display screen of the display unit so that they can be distinguished according to the evaluation value by superimposing it on information about the internal structure.
According to this configuration, an evaluation value is calculated based on a predetermined formula for calculating a value evaluating the safety of an evacuation route, and multiple evacuation routes are displayed in a distinguishable manner according to the calculated evaluation value, so that even if multiple evacuation routes are displayed, it is possible to recognize which evacuation route is relatively safe, and a user can evacuate with peace of mind by selecting the route with a clear reason. Also, the reliability of the displayed evacuation routes can be increased.

It is also preferable that the specified calculation formula is an equation that uses the distance between the installation location of the fire detector that sent out the alert information and the nearest point on the evacuation route as a parameter, and that derives a larger evaluation value as the distance becomes larger.
According to this configuration, evacuation routes that pass through areas close to the source of the fire are displayed in a manner that allows them to be distinguished from those that do not, so that evacuees who look at the display and select an evacuation route can evacuate safely.

Furthermore, preferably, the control unit is configured to cause an evacuation route having a higher evaluation value to be displayed on the display screen of the display unit in a manner that is more visually appealing.
According to this configuration, even if a plurality of evacuation routes are displayed, it is possible to easily determine which evacuation route to select, and to evacuate safely.

Furthermore, it is desirable that the control unit is configured to not display on the display screen of the display unit any evacuation route for which the distance between the installation location of the fire detector that sent the alert information and the nearest point of the evacuation route is less than a predetermined value, regardless of the evaluation value.
According to this configuration, evacuation routes where the distance between the fire detector that sent out the alarm information and the nearest point on the evacuation route is less than a specified distance are not displayed, thereby preventing evacuees from mistakenly selecting a dangerous route that passes through a point close to the source of the fire.

Also, preferably, the evacuation route display device further includes an audio output unit capable of outputting audio,
The control unit is configured to cause the voice output unit to output voice guidance corresponding to the evaluation value.
According to this configuration, the audio output unit outputs audio guidance according to the evaluation value, so that even evacuees who are located far away from the evacuation route display device can determine the evacuation direction.

The evacuation route display device of the present invention can assist evacuees in selecting the safest evacuation route from among multiple evacuation routes, allowing them to evacuate with peace of mind. Another advantage is that evacuees can intuitively recognize in which direction they should evacuate by looking at the evacuation route information displayed on the display unit.

1 is a system configuration diagram showing the configuration of an embodiment of an evacuation support system using a sub-receiver as an evacuation route display device of the present invention. 1 is a block diagram showing an example of a configuration of an evacuation route display device according to an embodiment; FIG. 2A is a diagram showing an example of a map displayed on a display unit of an evacuation route display device, and FIG. 2B is a diagram showing an example of an evacuation route. FIG. 1A is a diagram showing an example of the location of a fire on a map, and FIG. 1B is a diagram showing the distance to the nearest point on an evacuation route. 13A to 13C are diagrams showing examples of evacuation routes according to recommendation levels displayed on a display unit of an evacuation route display device. FIG. 1 is a diagram showing examples of distances and dimensions of various parts inside a building.

Hereinafter, an embodiment of an evacuation route display device according to the present invention will be described with reference to the drawings. Fig. 1 is a block diagram showing a schematic configuration of a fire alarm system including a sub-receiver as an evacuation route display device.
As shown in Figure 1, the fire alarm system of this embodiment comprises a plurality of fire sensors 11 arranged at designated locations within a designated area of a facility such as a building, a fire receiver 13 that receives fire detection signals from the fire sensors 11 via a sensor line 12, and a sub-receiver 15 as an evacuation route display device that displays the same information as the fire receiver 13 based on information signals transmitted from the fire receiver 13 via a transmission line 14.

When the fire detector 11 detects the occurrence of an abnormal phenomenon associated with a fire, such as heat, smoke, or flame, it transmits a fire detection signal (alert information) to the fire receiver 13 via the detector line 12. The fire detection signal from the fire detector 11 may be configured to be transmitted to the fire receiver 13 via a repeater. The repeater is also connected to lines to which a district bell and smoke control and exhaust equipment are connected.
In addition, it is preferable that the fire detector 11 is a type of detector that adds its own communication address to the fire detection signal. The fire receiver 13 refers to information stored in its own storage device (such as a list showing the correspondence between the detector addresses and their installation locations) and identifies the location of the fire based on the communication address of the fire detector included in the fire detection signal.

The fire receiver 13 is installed in the disaster prevention center or control room of the building to be monitored, and centrally monitors the operation of the fire detectors 11 installed in various locations. When activated, it has the following functions: to output a fire alarm by sounding the fire receiver itself and sound devices such as bells in each district, to perform linked control of the district bell ringing and smoke exhaust, and to display the location of the fire on the display.
The sub-receiver 15, like the fire receiver 13, has the function of displaying the location of a fire on the display unit and the function of outputting a fire alarm sound, and is installed so that the fire monitoring status can be checked in places other than the disaster prevention center or control room where the fire receiver 13 is installed.

Furthermore, the fire alarm system of this embodiment is configured so that a fire detection signal (alert information) from the fire detector 11 in the area in which the sub-receiver 15 is installed is transmitted to the sub-receiver 15 via the signal line 16. Therefore, the sub-receiver 15 can grasp where a fire has occurred within the area (floor) in which the sub-receiver 15 is installed.
In Fig. 1, the arrows indicate the direction of information transmission. Also, in Fig. 1, a sub-receiver 15 is provided in each area (floor), but there are also areas (floors) where no sub-receiver 15 is provided.

FIG. 2 shows an example of the configuration of the sub-receiver 15.
2, the sub-receiver 15 includes a first receiving section 21 for receiving an information signal from the fire receiver (main receiver) 13, a second receiving section 22 for receiving a detection signal or a fire information signal from the fire detector 11, a control section 23 with a calculation function including a CPU (central processing unit) and the like, a memory section 24 for storing a program executed by the CPU (23), map information such as a floor plan, information on the installation position of the fire detector, a calculation formula for calculating the safety level (recommendation level) of an evacuation route, and the like, a touch panel display 25 with an input section 25A and a display section 25B, a speaker 26 capable of outputting sound, a power supply section 27 for supplying a power supply voltage, etc. The installation position information of the fire detector is stored in the memory section 24 in association with address information for communication with the fire receiver that is assigned to the fire detector.

The control unit 23 also includes a fire information processing unit 31 that displays fire-related information similar to the information displayed on the display unit of the fire receiver on the display unit 25B based on information from the fire receiver (main receiver) 13, a fire location determination unit 32 that determines the location of a fire based on an information signal from the fire detector 11, a route recommendation calculation unit 33 that calculates the safety level, i.e., recommendation level, of each evacuation route based on the location information determined by the fire location determination unit 32 and map information of the area (floor), a map display processing unit 34 that displays the evacuation routes on the display unit 25B in a manner according to the calculated recommendation level, an evacuation route setting unit 35 that recognizes the evacuation route input from the input unit 25A and stores it in the memory unit 24, and an audio output processing unit 36 that drives the speaker 26 to output audio.

Fig. 3 shows an example of the layout of one area (floor) in which the sub-receiver 15 is installed. In Fig. 3, the areas designated by the symbols A1, A2, A3, and A4 are corridors (passages), and the areas designated by the symbols E1, E2, E3, and E4 are emergency exits. As shown in Fig. 3(A), the sensors 11 are distributed and installed in the area (floor), and the sub-receiver 15 is installed on one wall of the corridor (passage) A3.
Map information indicating the layout of the area (floor) as described above, the installation positions of the sub-receiver itself, and the installation positions of the fire detectors is stored in advance in the memory unit 24 of the sub-receiver 15. The sub-receiver 15 of this embodiment has a function for displaying a map and an evacuation route on the display unit 25B, but when the evacuation route is displayed, the detectors do not have to be displayed.

Next, the function of the sub-receiver 15 of this embodiment relating to displaying evacuation routes will be described with reference to Figures 3 to 6. First, a method for determining a recommended evacuation route will be described. When multiple sub-receivers are provided in a fire alarm system, the maps stored in each sub-receiver are different. Therefore, the evacuation route will also be different for each sub-receiver.
Therefore, the sub-receiver of this embodiment is configured to have a route setting mode (function) in which a map is displayed on the display section 25B of the touch panel display 25, and the route to be set as an evacuation route is recognized by tracing the route on the displayed map with a finger, and the route is stored in the storage section 24. With this function, for example, in the map of Fig. 3, four routes R1, R2, R3, and R4 are set as shown in Fig. 3(B). If the design drawings for the floors are available in advance, the evacuation routes may be set on the map at the time of shipment from the factory and stored in the storage section 24.

The determination of evacuation routes in this embodiment is characterized in that, first, the longer the distance from the source of the fire to the shortest position (closest point) of multiple pre-set evacuation routes, the safer the route is, and, second, the shorter the length of the evacuation route, the safer the route is.
In addition, if there are special circumstances, such as when some of the multiple evacuation routes have poor visibility, when there are fire doors along the way, or when a particular evacuation exit is crowded with many evacuees, these conditions will be added to the decision.

For example, in Figure 4(A), if detector D1 in the upper right corner detects a fire, the distances l1, l2, l3, and l4 from detector D1 to the closest points on the four routes R1, R2, R3, and R4 (hereafter referred to as the nearest point distances) are l1>l2>l3>l4, as can be seen from Figure 4(B). Also, since the lengths of the routes are R4>R3>R1>R2, if there are no other constraints (good or bad visibility, fire doors), routes R1 and R2 will be judged to be relatively safe, and route R4 will be judged to be dangerous.

In addition, if there are fire doors along the way, routes that pass through areas where the fire doors can prevent the spread of a fire are rated as safer. A possible method for evaluating safety based on the congestion level of an emergency exit is for a disaster prevention center staff member to check footage from a surveillance camera installed near the emergency exit, input the congestion level information from the fire receiver (main receiver) 13 and transmit it to the secondary receiver 15, and then calculate the safety level by taking into account the congestion level information received by the secondary receiver 15. The secondary receiver 15 may also be provided with a function that allows information regarding the congestion level of an emergency exit to be directly input.

Next, a method of displaying evacuation routes on display unit 25B based on the safety level determined as described above will be described. In this embodiment, evacuation routes are displayed with arrows indicating the evacuation direction, and multiple evacuation routes are displayed superimposed on one map so that the higher the safety level, the clearer the route is. The arrow indicating the evacuation direction may be displayed as a moving image extending from the starting point to the end point of the evacuation exit. In addition to displaying the evacuation route on display unit 25B, audio guidance such as "Of the north and east side evacuation exits, please head towards the north exit as much as possible" may be played from speaker 26.

Specific examples of displays that become clearer as the level of safety increases include a method in which the arrow indicating the evacuation direction is displayed thicker as the level of safety increases, as shown in Figure 5 (A); a method in which the arrow indicating the evacuation direction flashes and the flashing cycle of the arrow is shortened as the level of safety increases, as shown in (B); a method in which the arrow indicating the evacuation direction is displayed as a dotted line and the number of line segments per unit length increases as the level of safety decreases, as shown in (C) (a single line segment is a solid line, which is the highest level of safety), or a combination of the above methods; and when displayed as a video, the rate of change is increased as the level of safety increases.

As another display mode of the arrows indicating the evacuation direction, each arrow may be displayed in a different color. In this case, for example, corresponding to the lighting colors of traffic signals, it is possible to display the arrows in blue if the route is highly safe, in red if evacuation is possible but potentially dangerous, and in yellow if it is somewhere in between. Alternatively, in an imminent situation, the arrows may be displayed in red, which makes a strong visual impression and indicates a high degree of safety, so that evacuees can determine the evacuation direction with just a glance at the display screen. This is because if the arrow is clear, it can be intuitively recognized that the system is recommending that the user select that route. Furthermore, the above display modes using colors may be combined with the display modes of Figures 5 (A) to (C) to display the arrows.

上記式において、Ｗ’ijは条件係数、Ｗijは重み係数、ｉはパラメータＸの番号であり、例えばｎ＝５の場合、Ｘ１は火元から各避難経路の近接点までの距離、Ｘ２は各避難経路の長さの逆数、Ｘ３は見通しの良し悪し、Ｘ４は防火扉の有無、Ｘ５は避難口の混雑度合いとする。 Next, an example of a formula for calculating the safety level, i.e., the recommendation level, of each evacuation route (Equation 1) will be described. In the following description, the identification symbol of each evacuation route will be denoted as j, and the recommendation level of evacuation route j will be denoted as Index(j). The larger the value of Index(j) obtained by the following calculation formula, the higher the safety level, i.e., the recommendation level.

In the above formula, W'ij is a condition coefficient, Wij is a weighting coefficient, and i is the number of the parameter X. For example, when n = 5, X1 is the distance from the source of the fire to the nearest point of each evacuation route, X2 is the reciprocal of the length of each evacuation route, X3 is the quality of visibility, X4 is the presence or absence of fire doors, and X5 is the degree of congestion at the evacuation exit.

The reason why X2 is the inverse of the length of the evacuation route is because the longer the evacuation route, the greater the danger, so taking the inverse is effective in underestimating the safety level. Similarly, for X5, the more crowded the evacuation exit, the greater the danger, so it is better to use the inverse of the number of people per unit area as a parameter.
The weighting coefficient Wij is multiplied so that the more important the parameter, the greater the influence it has on the calculated value, thereby enabling a more accurate calculation of the safety level. Which parameter has a higher importance depends on conditions such as the structure of the target building and the installation position of the sub-receiver 15, so it is advisable to adjust and set this for each sub-receiver 15.

The condition coefficient W'ij may be, for example, the same floor as the floor where the fire originated, or a floor above, or a floor below. Since toxic gas may be generated during a fire and flows from upper floors to lower floors, if the floor is the same as or above the floor where the fire originated, it is set to "1", and if it is a floor below, it is set to "0". However, this is based on the assumption that the floor is above ground. In the case of a basement floor, it is possible to define 0 and 1 in the opposite way to the above, taking into consideration that if the floor is the same as or above the floor where the fire originated, it is preferable to reach the exit immediately, and if the floor is below the floor where the fire originated, it is necessary to reach the exit by passing through the floor where the fire originated.
The parameter X is not limited to the above five types. Furthermore, instead of using the distance value as it is for X1 and X2, the ratio to the maximum one of a plurality of routes may be used.

Furthermore, the above formula may include coefficients or parameters other than W'ij and Wij, such as the time elapsed since the first fire was detected or the number of detectors that detected the fire.
Specifically, a coefficient a(j,t) that changes over time may be set, with a(j,t) = 1 at the beginning of a fire outbreak, and when a signal is received from the (main) receiver that a heat or smoke detector on the route that is closest to the escape exit has responded, the route is deemed undesirable and the value may be changed to a value closer to 0. Also, if there are many detectors on the route, the value may be changed to a value closer to 0 once the number of responding detectors reaches a certain level. Furthermore, depending on the proportion of responding detectors, a(j,t) may be gradually changed from 1 to 0 as the proportion increases.

Next, a specific example of calculating the recommendation level Index(j) using the above formula will be described.
As an example, a case will be described in which the distances and dimensions of each part in the map in Fig. 3(A) are as shown in Fig. 6, a fire is detected by detector D1 on the floor where the sub-receiver 15 is installed, and parameters X1, X2, and X3 are used. The identification symbol j of the evacuation route is the same number as the subscript of the evacuation routes R1 to R4 in Fig. 4(B).
The value of X1, which corresponds to the distance from the source of the fire to the nearest point of each of the evacuation routes R1 to R4, is 100m-15m＝85m for evacuation route R1, and √(45^2+65^2)＝79m for the distance from the source of the fire to the end point of the route (emergency exit E4), so the shorter value of 79m is used for evacuation route R1. In addition, the value for evacuation route R2 is √(45^2+65^2)＝79m, for evacuation route R3 it is 10m+30m+5m＝45m, and for evacuation route R4 it is 10m.

Next, with regard to the value of X2, which is the reciprocal of the distance (length) of each evacuation route R1 to R4, the distance of evacuation route R1 is 30m + 30m = 60m, so the reciprocal is 1/60, the distance of evacuation route R2 is 30m, so the reciprocal is 1/30, the distance of evacuation route R3 is 70m, so the reciprocal is 1/70, and the distance of evacuation route R4 is 70m + 30m = 100m, so the reciprocal is 1/100.
With regard to X3, which indicates the quality of visibility, if there is a point on the route from which the source of the fire can be seen, it is set to "0", and if there is no point from which the source of the fire can be seen, it is set to "1", so that evacuation route R1 is "1", evacuation route R2 is "1", evacuation route R3 is "0", and evacuation route R4 is "0". In addition, since the floor on which the sub-receiver is installed is the same as the floor on which the source of the fire is located, the condition coefficient W'ij is "1".

Here, the maximum value of X1 is 79(m), while the maximum value of X2 is 1/30 = 0.033(1/m), and as it is, there is an extreme difference in the degree of influence on the value of Index(j). To reduce this difference, a weighting coefficient Wij is applied, but it is difficult to set the weighting coefficient Wij. Therefore, X1 and X2 are rewritten as the ratio to the maximum value of each route.
Then, the value of X1 is 79/79 = 1 for evacuation routes R1 and R2, 45/79 = 0.57 for evacuation route R3, and 10/79 = 0.13 for evacuation route R4. The value of X2 is the largest, the reciprocal of evacuation route R2, 1/30, so if this is set to "1", the value will be 30/60 = 0.5 for evacuation route R1, 30/70 = 0.43 for evacuation route R3, and 30/100 = 0.3 for evacuation route R4. Since the maximum value for all is "1", the degree of influence on the value of Index(j) will be almost the same. If you want to slightly increase the degree of influence of either X1 or X2, you can increase the weighting coefficient Wij of the one you want to increase.

When the weighting coefficients Wij are all set to "1," the values of X1, X2, and X3 are substituted into the formula in [Mathematical Expression 1] to calculate the value of the recommendation level Index(j), and the recommendation level of evacuation route R1 (j=1) is Index(1) = 1.0 + 0.5 + 1 = 2.5, the recommendation level of evacuation route R2 (j=2) is Index(2) = 1.0 + 1.0 + 1 = 3.0, the recommendation level of evacuation route R3 (j=3) is Index(3) = 0.57 + 0.43 + 0 = 1.0, and the recommendation level of evacuation route R4 (j=4) is Index(4) = 0.13 + 0.3 + 0 = 0.43.
From the above calculations, the recommendation level of evacuation route R2 is the highest, followed by the recommendation levels of evacuation route R1, R3, and R4. If we were to not display evacuation route R4, which has the shortest distance from the source of the fire to the nearest point of each of the evacuation routes R1 to R4, that is, the most dangerous, the display would be as shown in Figures 5(A) to 5(C).

As described above, according to the above embodiment, an evacuee who sees the evacuation route displayed on the display unit 15B of the secondary receiver 15 can voluntarily select the safest evacuation route from among multiple evacuation routes and evacuate in peace. In addition, because the secondary receiver 15 is installed next to an aisle, the evacuee can intuitively determine the positional relationship between the evacuation exit displayed on the map and the actual evacuation exit inside the building, so that the evacuation direction can be determined accurately and quickly.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the above embodiments and can be modified as appropriate without departing from the gist of the invention. For example, in the above embodiment, a display unit that displays evacuation routes is provided on the sub-receiver 15, but a display unit may be provided on disaster prevention equipment such as a fire hydrant door installed on a wall of a passageway or a composite device in which a transmitter, alarm lamp, and speaker are housed together in a single housing, or a separate dedicated display device may be installed on the wall of the passageway to display evacuation routes.

In addition, in the above embodiment, the detection signal from the detector 11 is directly input to the auxiliary receiver 15, but the auxiliary receiver 15 may be configured to display the above-mentioned evacuation route based on the alarm information received from the fire receiver (main receiver) 13 and the location information of the detector that triggered the alarm. Furthermore, the calculation of the recommendation level using the above-mentioned formula [Equation 1] may be performed by the fire receiver 13, and the result may be transmitted to the auxiliary receiver 15 for display on the display unit.

In addition, in the above embodiment, evacuation assistance is provided by displaying the evacuation route only on the display device, but it is also possible to install multiple sets of red and green lamps in the corridor on the side where the secondary receiver 15 is not installed, and send a signal from the secondary receiver 15 to turn on the green lamp in a safe direction and the red lamp in a dangerous direction.
Furthermore, the brightness of the emergency exit guide lights installed at the emergency exits may be adjusted so that safe emergency exit guide lights are brightly lit and dangerous emergency exit guide lights are dimly lit or turned off by sending a signal from the sub-receiver 15 via wired or wireless communication. In this way, it is possible to inform safe directions even to evacuees in passages where the sub-receiver 15 is not installed.

11 Fire detector (sensor)
12 Sensor line 13 Fire receiver 14 Transmission line 15 Sub-receiver 16 Signal line 21 First receiving unit 22 Second receiving unit 23 Control unit 24 Memory unit 25 Touch panel display 26 Speaker (audio output unit)
27 Power supply unit

Claims (6)

An evacuation route display device having a display unit having a display screen, a receiving unit capable of receiving detector information from a plurality of fire detectors and/or fire receivers, the detector information including alarm information indicating the occurrence of a fire and address information, a storage unit capable of storing the received information, and a control unit for performing calculations, the device being disposed midway along a passageway,
the storage unit prestores information on an internal structure including a passageway and an emergency exit of a building floor on which the evacuation route display device is installed, installation position information of the plurality of fire detectors on the building floor, and an evacuation route from the evacuation route display device to the emergency exit of the building floor,
The control unit has a function, when it receives the alarm information from the fire detector by the receiving unit, to select a plurality of evacuation routes based on the relationship between the installation location of the fire detector that sent the alarm information and the stored evacuation routes, and to display the selected plurality of evacuation routes on the display screen of the display unit. The storage unit stores in advance a predetermined calculation formula for calculating a value for evaluating the safety of each evacuation route,
The evacuation route display device according to claim 1, characterized in that the control unit calculates an evaluation value for each evacuation route using the predetermined calculation formula based on the relationship between the installation location of the fire detector that sent the alert information and the evacuation route, and displays the multiple evacuation routes on the display screen of the display unit so that they can be distinguished according to the evaluation value by superimposing it on the information on the internal structure. The evacuation route display device according to claim 2, characterized in that the predetermined calculation formula is a formula that uses the distance between the installation position of the fire detector that sent the alert information and the nearest point on the evacuation route as a parameter, and derives a larger evaluation value as the distance increases. The evacuation route display device according to claim 2 or 3, characterized in that the control unit displays the evacuation route on the display screen of the display unit in a manner that is more visually appealing for the evacuation route with the higher evaluation value. The control unit is
5. An evacuation route display device as claimed in any one of claims 2 to 4, characterized in that for evacuation routes where the distance between the installation location of the fire detector that sent the alert information and the nearest point of the evacuation route is less than a predetermined value, the evacuation route is not displayed on the display screen of the display unit regardless of the evaluation value. The evacuation route display device further includes an audio output unit capable of outputting audio,
The evacuation route display device according to claim 2 , wherein the control unit causes the audio output unit to output audio guidance corresponding to the evaluation value.

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