Personalized escape assistance order and personalized escape assistance procedure

Abstract

The escape aid system and procedure guide a user (B.1, B.2) to a safe destination position when an alarm situation occurs in a spatial area and an alarm message is therefore sent. The user carries an escape aid device (100.1, 100.2) with a vital signs sensor (50.1, 50.2), a geoposition sensor (40.1, 40.2), and an output unit (30.1, 30.2). A navigation unit (20.z) calculates an escape route for the user (B.1, B.2), which leads from the user's current geoposition (B.1, B.2) to the safe destination position. The navigation unit (20.z) generates an escape route description (Des.1, Des.2) for this escape route. For this purpose, it classifies the user's current state based on a vital parameter (B.1, B.2) and generates the escape route description (Des.1, Des.2) based on the classified current state. The output unit (30.1, 30.2) outputs the escape route description (Des.1, Des.2).

Description

[0001] The invention relates to an escape aid system that, in the event of an alarm, is capable of calculating and displaying an escape route for a user of an escape aid device of the escape aid system. Furthermore, the invention relates to an escape aid method that is carried out using such an escape aid system.

[0002] An alarm situation occurs in a given area, for example, when a gas detector detects an impermissible concentration of a target gas within that area. The target gas could be, for instance, a gas harmful to humans, oxygen, or an anesthetic. An alarm situation also occurs when fire or smoke is detected, or when an operator activates an alarm device. In this case, everyone in the area must immediately leave and reach a safe location. One problem is that at least some people may be unfamiliar with the area and therefore unsure how to reach a safe location. This problem is particularly relevant if the area is open to the public.Furthermore, the problem can arise that a person in the spatial area has panicked.

[0003] The invention is based on the objective of providing an escape aid arrangement and an escape aid procedure which enable a person to leave a spatial area in which an alarm situation has occurred more reliably than known escape aid arrangements and escape aid procedures.

[0004] The problem is solved by an escape aid arrangement with the features of claim 1 and by an escape aid method with the features of claim [Error! Reference source not found]. Advantageous embodiments are specified in the dependent claims. Advantageous embodiments of the escape aid arrangement according to the invention are, where appropriate, also advantageous embodiments of the escape aid method according to the invention, and vice versa.

[0005] The terms "spatial area," "alarm situation," and "safe destination position" are used below. A spatial area can be any area where people are or could be, in particular publicly accessible places and facilities, buildings, vehicles, and industrial plants. An alarm situation exists within the spatial area when an event has occurred that is dangerous to people, such as a fire or smoke, the release of a gas harmful to humans, or a lack of oxygen. An alarm situation also exists if an explosion is imminent or if an operator has activated an alarm control unit, thereby issuing the order to evacuate the spatial area. A safe destination position is a location where people can remain even after an alarm situation has occurred.The safe destination position can be located within or outside the spatial area. In particular, the safe destination position can be an assembly point outside the spatial area, a protective chamber, or another type of shelter.

[0006] The escape aid arrangement according to the invention comprises an escape aid device. The escape aid device can be worn by a person. In particular, the escape aid device can be attached to the user's clothing and preferably also removed again. The escape aid device is designed so that the person can carry the escape aid device with them while in the same area. This person is hereinafter referred to as the "user" of the escape aid device. Of course, it is possible for different users to use the same escape aid device successively. Preferably, the escape aid arrangement according to the invention comprises several escape aid devices, each of which can be used by a single user. Several escape aid devices can be used overlapping in time.

[0007] A vital sign sensor in the escape aid device is capable of measuring a vital sign of the user. Preferably, the vital sign sensor measures the vital sign multiple times, for example, at a fixed sampling rate. Examples of such vital signs include respiratory rate, heart rate, blood pressure, and blood oxygen saturation. The vital sign sensor is capable of generating a signal, the signal containing information about the vital sign, more precisely: about the measured value of the vital sign or the sequence of measured values. Optionally, the escape aid device includes multiple vital sign sensors, each capable of measuring one vital sign.

[0008] A geoposition sensor in the escape aid device is capable of measuring its own current geoposition (geographic position). Because the user carries the escape aid device and thus the geoposition sensor with them, the geoposition of the geoposition sensor corresponds with sufficient accuracy to the user's geoposition. Preferably, the geoposition sensor measures its own geoposition multiple times, for example, at a fixed sampling frequency. The geoposition sensor is capable of generating and outputting a signal, the signal containing information about its measured geoposition.

[0009] Note: The wording used is that a sensor is capable of measuring a physical quantity, in particular a vital parameter or a geoposition. This wording means that the sensor is capable of directly measuring the physical quantity or at least one other quantity that correlates with the quantity to be measured. The measured quantity, or any one of the measured quantities, is therefore a measure of the physical quantity to be measured. The measurement provides at least one value for the desired physical quantity.

[0010] An output unit of the escape aid device is capable of outputting information in a form perceptible to a human, in particular visually, audibly, and / or haptically (via vibrations). Optionally, the escape aid device includes multiple output units to output the same information in different ways perceptible to a human. Optionally, the escape aid device also includes an input unit and is capable of capturing and evaluating user input on this input unit.

[0011] If the escape aid arrangement includes several escape aid devices, each escape aid device preferably has at least one vital parameter sensor, one geoposition sensor, at least one output unit and optionally one input unit.

[0012] The escape aid system further comprises a signal-processing navigation unit. The navigation unit can be located spatially separate from the escape aid device(s) and, in particular, can be a component of a stationary computer or a computer on board a vehicle. If the navigation unit is located at a distance, a bidirectional data connection is established at least temporarily between the navigation unit and the escape aid device; in the case of multiple escape aid devices, a bidirectional data connection is established with each escape aid device. The navigation unit can also be a component of the escape aid device. It is also possible that a first component of the navigation unit belongs to the escape aid device and a second component is located at a distance.

[0013] In the case of multiple escape aid devices, each escape aid device can include its own navigation unit. It is also possible that the navigation unit is a component of the first escape aid device in the escape aid system, and that each subsequent escape aid device is in a bidirectional data connection with the navigation unit of the first escape aid device.

[0014] The navigation unit is capable of receiving and processing an alarm message. The received alarm message contains information indicating that an alarm situation exists within its spatial area. Naturally, the navigation unit can receive multiple alarm messages sequentially. The alarm message may have been generated and transmitted in response to a sensor detecting the alarm situation. The sensor may be located remotely from the navigation unit or be an integral part of the navigation unit. It is also possible that an operator in a monitoring unit triggered the transmission of the alarm message.

[0015] The navigation unit has at least temporary read access to a predefined area data memory. The area data memory can be an integral part of the navigation unit or located separately from it. The area data memory contains, firstly, a computer-readable description of the spatial area. This description includes, in particular, a floor plan or a map. Optionally, the description also includes an indication of bottlenecks within the spatial area. Secondly, the area data memory contains a computer-readable identifier for a safe destination position. Optionally, the identifiers for multiple safe destination positions are also stored.

[0016] The escape aid method according to the invention is carried out using an escape aid arrangement according to the invention. The escape aid method is carried out while the user is in the spatial area and carries the escape aid device. In one situation, the escape aid method is carried out while several users are simultaneously in the spatial area and each user carries an escape aid device.

[0017] The escape aid arrangement according to the invention is designed to perform the following steps in response to the receipt of the alarm message, and according to the escape aid method according to the invention, the following steps are performed in response to the navigation unit having received the alarm message: The navigation unit calculates an escape route for the user. This escape route begins at the current geoposition measured by the geoposition sensor. The escape route leads to the safe destination position, or, if there are multiple safe destination positions, to one of them. To calculate the escape route, the navigation unit processes the signal from the geoposition sensor, the stored description of the spatial area, and the stored identifier of the safe destination position. In one embodiment, the navigation unit uses the most recently measured geoposition to calculate the escape route. In another embodiment, the step of the navigation unit receiving the alarm message triggers the step of the geoposition sensor measuring its own current geoposition. Optionally, multiple safe destination locations can be stored. Optionally, the navigation unit also evaluates the alarm message to calculate the escape route. Depending on the alarm message, the navigation unit decides which safe destination the calculated escape route should lead to. For example, depending on the alarm message, the navigation unit selects a safe destination within the spatial area or a safe destination outside the spatial area. It is possible that at the time the alarm message is received, several users are present in the area, each carrying an escape aid device. In this situation, the navigation unit calculates an escape route for each user. - The navigation unit generates an escape route description. This description presents the calculated escape route in a way that is easily understood by a human. If there are multiple users, the navigation unit generates a separate escape route description for each user. The navigation unit controls the output unit. The controlled output unit then displays the generated escape route description. If multiple escape route devices are present, each output unit displays its respective escape route description.

[0018] The process by which the navigation unit controls the output unit can include the following steps: The navigation unit transmits the escape route description to the escape aid device and controls the escape aid device. The escape aid device then controls the output unit.

[0019] An escape route is a path from a first geographical location, in this case the user's measured current geoposition, to a second geographical location, in this case the safe destination. An escape route description is a description of the escape route, whereby the escape route description describes the escape route to the user in such a way that the user knows how to reach the safe destination without further aids – provided the user is currently able to understand and follow the escape route description.

[0020] According to the invention, the step of the navigation unit receiving the alarm message triggers the steps just described. It is also possible that a user input additionally triggers the steps just described. In particular, this user input specifies that the user requests the following: The escape aid device should generate and output a description of an escape route from the spatial area.

[0021] According to the invention, the navigation unit is able to generate at least two different possible escape route descriptions for the same calculated escape route. Preferably, it actually calculates only one escape route description. The controlled output unit actually outputs one of these possible escape route descriptions, namely the one that was actually calculated, in order to describe the calculated escape route. The possible escape route descriptions differ from each other in the way a calculated escape route is represented. For example, a first possible escape route description includes a map of the spatial area as well as a path that is plotted on the map and that describes the escape route.A second possible escape route description comprises a sequence of images, each depicting a location within the spatial area. The sequence specifies the order in which a user must pass these locations to reach the safe destination along the escape route. A third possible escape route description comprises a sequence of textual descriptions, presented visually and / or audibly. A fourth possible escape route description comprises a sequence of directional indicators, optionally supplemented by information about the distance to be traveled in that direction.

[0022] The escape aid arrangement according to the invention is designed to automatically perform the following steps, and the escape aid method according to the invention comprises the following automatically performed steps: The navigation unit classifies the user's current condition. To classify this condition, the navigation unit processes the signal from the vital signs sensor, or optionally the signals from multiple vital signs sensors, of the escape device. Each vital signs sensor belongs to the escape device carried by the user. In one embodiment, the navigation unit uses the most recently measured value of the vital parameter to classify the user's current condition. In another embodiment, the step of the navigation unit receiving the alarm message triggers the step of the vital parameter sensor measuring the vital parameter. - The navigation unit generates one of at least two possible escape route descriptions as the actually displayed escape route description. The navigation unit uses the classified current state of the user to generate one of the possible escape route descriptions as the actually displayed escape route description.

[0023] In one implementation, the navigation unit first classifies the user's current state and then generates the escape route description based on the classified state, causing the escape route description to be displayed. In another implementation, the navigation unit generates at least two possible escape route descriptions and then selects one of the generated possible escape route descriptions based on the current user state, causing this escape route description to be displayed.

[0024] In a preferred embodiment, several display modes are predefined to generate an escape route description for a previously calculated escape route. For a given escape route, each display mode leads to a different escape route description. Depending on the user's classified state, the navigation unit selects a display mode and uses it to generate the escape route description. In one implementation, a default display mode and at least one other display mode are predefined. The navigation unit uses the default display mode unless the user's classified current state lies outside a standard range—more precisely, the measured value of a vital parameter lies outside a predefined range.

[0025] According to the invention, the user carries the escape aid device with them while in the relevant area. This device displays the escape route description in a form perceptible to a human. Thanks to this design, it is not necessary for a remote device, such as a stationary display unit or a display unit on a stationary or moving vehicle or aircraft, to provide instructions or information to the user. Particularly in darkness, smoke, or confined spaces, it is often difficult for a user to perceive information from a remote display unit. Sometimes, in an alarm situation, the power supply is cut off. Furthermore, the invention eliminates the need for a vehicle or aircraft to move along the escape route and thereby provide or indicate the escape route to the user.The user would then have to constantly keep the vehicle or aircraft in sight in order to follow it. Instead, the provided escape route description informs the user about the escape route.

[0026] According to the invention, a vital parameter of the user is measured by a vital parameter sensor, wherein the vital parameter sensor is part of the escape aid device that the user carries with them. Thanks to this feature, the vital parameter can be measured more reliably in many cases than by the following conceivable embodiment: A spatially distant sensor, in particular a camera, measures the vital parameter remotely. Some vital parameters can only be measured by a sensor that the user carries with them, but not remotely.

[0027] According to the invention, the user's current geoposition is measured by the geoposition sensor measuring its own geoposition. Because the user carries the escape aid device with the geoposition sensor, the user's geoposition corresponds with sufficient accuracy to the geoposition measured by the geoposition sensor. Thanks to this design, the geoposition is measured more reliably in many cases than if a spatially distant sensor were to measure the user's geoposition.

[0028] According to the invention, the navigation unit calculates an escape route that begins at the user's current geoposition. The output unit provides a description of the escape route. Thanks to these features, the risk of the user not reaching the safe destination is reduced compared to a design in which only general instructions are provided to the user and these general instructions do not depend on either the current geoposition or the user's current state.

[0029] According to the invention, the event that the navigation unit has received the alarm message triggers the steps whereby the navigation unit calculates the escape route, generates the escape route description, and the output unit displays the escape route description. These features eliminate the need for a user to provide input to trigger these steps. However, it is possible for the escape aid device to include an input unit, and for a corresponding user input to trigger these steps.

[0030] According to the invention, a distinction is made between an escape route and an escape route description for that escape route. An escape route is a set of data calculated by the navigation unit, for example, a sequence of geopositions or a sequence of points in a predefined two-dimensional or three-dimensional coordinate system. The escape route description can be represented in a way that is perceptible to a human, and the user can perceive and use the escape route description when it is output by the output unit. For the same escape route, there are at least two different possible escape route descriptions.

[0031] According to the invention, the navigation unit generates the escape route description based on the user's current, classified state. The escape route description is thus adapted to the user's current state. This feature reduces the risk that a user, due to their current state, will not understand the generated escape route description and therefore will not be able to follow it. This risk is particularly high if the user is panicking and therefore currently unable to understand and use an escape route description that includes a map and a path on that map.

[0032] In many cases, the escape aid device according to the invention can automatically determine whether a user is panicking or not. In a first implementation, the navigation unit evaluates the signal from the vital signs sensor as follows: A user in a panic typically exhibits a significantly higher heart rate and / or respiratory rate than a user who is not panicking. The navigation unit generates the escape route description depending on whether the measured vital signs indicate that the user is panicking or not. An alternative or additional second implementation can be used if a user has already traveled part of a previously calculated escape route and may now be panicking.One indication that the user has now panicked is the following detection: The user is moving in a zigzag pattern, even though the escape route is not, or at least not in the same zigzag pattern as the user's movement. The navigation unit is able to detect a zigzag movement pattern of the user, particularly based on the signal from the geoposition sensor.

[0033] The invention reduces the risk of the following undesirable event occurring: The escape aid device issues an escape route description. The user is unable to follow the issued escape route description, and therefore the escape route itself, because they have panicked. On the other hand, a user who has kept a clear head will, in many cases, receive a sufficiently detailed escape route description.

[0034] The invention can be used in combination with an escape route assistance device that includes a selection unit. Using this unit, a user can enter their current state or specify which escape route description should be generated and displayed for the calculated escape route. The invention eliminates the need for a user to use such a selection unit to obtain a suitable escape route description or one that deviates from a standard description. A user in a panic, in particular, will often be unable to use such a selection unit correctly or to choose an escape route description that is understandable to them.

[0035] According to the invention, the displayed escape route description depends on the determined current state of the user. This feature can be combined with an embodiment in which the user is registered in a user data memory and the escape route description is generated based on stored information about the user. For example, a physical impairment of the user is stored. The navigation unit detects which user is currently using the escape aid device and uses the stored information about this user. For example, the navigation unit generates the escape route description in such a way that it is adapted to a stored physical disability of the user. However, the invention eliminates the need to generate the escape route description based on stored information about the user.A panic attack is usually a temporary condition, whereas a physical impairment is often permanent.

[0036] According to the invention, the navigation unit calculates the escape route for the user, wherein the escape route leads from the user's current geoposition to the safe destination position. For this purpose, the navigation unit uses the description of the spatial area, the stored identifier of the safe destination position, and the measured current geoposition. Optionally, the navigation unit also evaluates the alarm message to calculate the escape route, for example, to select one of several predefined safe destination positions. In one embodiment, the navigation unit additionally uses the user information just described, wherein the user is registered in a user data memory and the information is stored in this user data memory.

[0037] In one configuration, the navigation unit calculates at least two escape route candidates from the current geoposition to the safe destination. Optionally, multiple safe destination locations are predefined, and the navigation unit calculates at least one escape route candidate to a first safe destination and at least one escape route candidate to a second safe destination. The navigation unit evaluates each escape route candidate. Factors considered in the evaluation include, for example, the length of the escape route and / or information on the number of bottlenecks and obstacles along that escape route candidate, and / or the alarm message. Optionally, stored user information is also included in the evaluation.Depending on the ratings, the navigation unit selects an escape route candidate and uses the selected escape route candidate as the calculated escape route, for which an escape route description is then generated.

[0038] According to the invention, the navigation unit generates the escape route description based on the measured, classified state of the user. The embodiment described below results in an escape route description that the user can understand and follow even if they are panicking and / or are unfamiliar with the area and therefore cannot understand a map.

[0039] According to this configuration, a set of images is stored in the area data storage, the set of images comprising several images. Each image shows a portion of the spatial area. Each image is stored together with a geolocation identifier. The stored identifier indicates the geolocation where an image recording device, in particular a camera, was located when the image was generated. Preferably, the images show distinctive, i.e., easily recognizable, objects and / or other distinctive areas of the spatial area. The images are preferably generated in advance and stored together with the geolocation identifiers in the area data storage. Preferably, the images together cover the entire spatial area or at least a portion of the spatial area, wherein this portion is accessible to humans, while the rest of the spatial area is not.

[0040] The navigation unit generates the escape route description according to this configuration as follows: The escape route is already calculated. The generated escape route description comprises a sequence of images, that is, an image from the set of images, or a sequence, i.e., a series, of multiple images from the set of images. Each image in this sequence shows a portion of the spatial area, with the calculated escape route passing by or through this spatial portion. In other words, when a user moves along this escape route, they see the spatial portion of the area shown by the image. The order of the images in the sequence corresponds to the order in which the shown spatial portions of the area become visible one after the other when the user moves along the calculated escape route.In other words, the order of the images corresponds to the order of the spatial parts when moving along the escape route.

[0041] The following design takes into account the possibility that the user's current state may change after the output unit has issued the escape route description and while the user is using the issued escape route description to reach the safe destination. For example, the user may panic on the way to the safe destination. Or they may have panicked upon receiving the alarm message but have since calmed down.

[0042] According to this configuration, the navigation unit determines the user's current state at least once again, preferably repeatedly, particularly at a fixed sampling frequency. For this purpose, it uses the signal from the vital signs sensor. At least when this re-determination reveals a significantly different user state than when the alarm message was received, the following step is performed: The navigation unit generates an updated escape route description. To generate the updated escape route description, the navigation unit processes the user state it classified during the re-determination.

[0043] In one implementation, the updated escape route description refers to the originally calculated escape route. A different implementation, described below, takes into account the possibility that the user may deviate significantly from the calculated escape route on their way to the safe destination. For example, the user may not have correctly understood the original escape route description or may have gotten lost. Or the original escape route may no longer be usable, as it is blocked.

[0044] The often undesirable and sometimes unavoidable result that the user has strayed from the escape route often means that the originally generated escape route description is no longer suitable for guiding the user to the safe destination. Furthermore, in some cases, this undesirable event causes the user to panic.

[0045] According to the alternative implementation, the navigation unit determines the current geoposition of the geoposition sensor, and thus that of the user, at least once again, preferably repeatedly, particularly at a fixed sampling frequency. Preferably, the navigation unit compares the newly determined current geoposition with the initially calculated escape route.

[0046] The steps described below are triggered at least when the generally undesirable result is detected that the recalculated current geoposition is more than one predefined position threshold away from the calculated escape route. It is also possible that these steps will be triggered at least once while the user is en route to the safe destination, for example, after a predefined time period or in response to a corresponding user input. The triggered steps are as follows: The navigation unit calculates an updated escape route. This updated escape route begins at the newly determined current geoposition and also leads to the same or a safe destination. The updated escape route may differ from the originally calculated escape route if the newly measured geoposition is not on the originally calculated escape route. - The navigation unit generates the updated escape route description as follows: The updated escape route description describes the updated escape route depending on the user state.

[0047] To generate the updated escape route description, the navigation unit uses, on the one hand, the newly determined current state and, on the other hand, the newly determined current geoposition of the user.

[0048] The result that the recalculated current geoposition is significantly different from the initially calculated escape route triggers the following additional step in one implementation: The navigation unit issues a message. This message contains the information that the user has deviated from the original escape route. In one implementation, this message is displayed on a screen at a remote receiver, for example, in an operations center. In another implementation, this message is displayed on the output unit of the escape aid device. In one implementation, the navigation unit only issues the message on the output unit of the escape aid device if it has previously determined that the user is not panicking. This is because a user who is already panicking might be further panicked by this message.

[0049] According to the invention, the navigation unit calculates an escape route and generates an escape route description for this escape route. The embodiment described below reduces the risk that the calculated escape route may be dangerous for a person due to an alarm situation and therefore impassable.

[0050] According to this configuration, the navigation unit is capable of receiving and processing an alarm signal. This alarm signal contains information about an alarm situation in a specific spatial area. Furthermore, it includes information about the geolocation where this alarm situation occurs. For example, the alarm situation was detected by a sensor, and the geolocation in the alarm signal is the geolocation of that sensor or the geolocation of a detection range of that sensor. The alarm situation could be, for example, an impermissible target gas concentration, the occurrence of flames, smoke, heat, or a rising water level. The alarm signal can originate directly from the sensor that detected the alarm situation or from a central alarm unit that receives and processes sensor signals.

[0051] According to the invention, the navigation unit processes the current geoposition of the geoposition sensor, the description of the spatial area, and the identification of the safe target position in order to calculate the escape route. In the embodiment just described, the navigation unit additionally processes the received alarm signal. In one implementation, the navigation unit ensures that the escape route is a sufficiently large distance from the geoposition of the received alarm signal.

[0052] In one implementation, the description of the spatial area includes the geoposition of an object. Thanks to this object, the event that triggered the alarm does not affect the escape route. Such an object could be, for example, a fluid-tight door or closure that prevents the passage of hazardous gases, or a fire-resistant or heat-resistant door or wall. If such an object shields the escape route from the source of the alarm, the escape route may still bypass the source, provided the object is located between the source and the escape route.

[0053] The configuration described above, which uses an alarm signal, can be combined with the configuration described earlier, whereby the navigation unit calculates an updated escape route and generates an updated escape route description. For example, receiving an alarm signal triggers the navigation unit to calculate an updated escape route. In one implementation of this combination, the navigation unit calculates the updated escape route and generates the updated escape route description based on a trigger criterion. This trigger criterion depends on the geolocation of the alarm source and the user's current geolocation, and optionally also on a description of the spatial area.

[0054] The invention is described below using an exemplary embodiment. Here, it is shown that... Fig. 1. Several sensors and output units in a spatial area to be monitored; Fig. 2. For example, a monitored spatial area and an escape route from the spatial area to a safe destination position; Fig. 3 an escape aid device with a local navigation unit and external sensors; Fig. 4 an embodiment with a central navigation unit, two escape aid devices and two different escape route descriptions for the same escape route; Fig. 5. A further elaboration of an escape route description. Devices in the monitored area

[0055] Fig. Figure 1 shows several devices as examples within a monitored spatial area Ar. People are present in this spatial area Ar or may be present there at least temporarily. Examples of such a monitored spatial area Ar include public places and facilities, vehicles, buildings, or industrial plants. Figure 1 also shows... Fig. 1. A safe destination position, for example an assembly point Sp or a shelter, outside the spatial area Ar, as well as a central rescue station Z outside the spatial area Ar, where at least one operator works. In one embodiment, several safe destination positions outside the spatial area Ar are specified, for example, several assembly points and / or at least one assembly point and a shelter. A safe destination position can also be located within the spatial area Ar.

[0056] Within this spatial area Ar, at least one gas may be present which, at a sufficiently high concentration, is flammable and / or toxic and / or otherwise harmful to humans. The harmful gas could, for example, be smoke from a fire and cause smoke inhalation. The harmful gas could also be flammable or toxic and, for example, escape from a leak or an open container. It is also possible that an insufficient concentration of oxygen occurs within the spatial area Ar, which, as is well known, is also dangerous for humans. The term "target gas" is used hereafter in general terms, whereby "target gas" can refer to both a gas that is harmful to humans and one that is essential for human life.

[0057] Two stationary gas detectors 1.1, 1.2 are installed at two locations separated from each other. For example, in Fig. 1. The geoposition Pos.1.1 of the gas detector 1.1 is entered. The designation "stationary device" specifies that the device is designed to be set up and used at one location. It is possible that a stationary device is initially used at one location, then moved to a second location, and then used at the second location.

[0058] Each stationary device includes a communication unit and is capable of transmitting a signal to a spatially distant receiver via this communication unit. The communication unit is capable of transmitting the signal, in particular, via wired or wireless radio waves. The signal contains information about a measurement result of the device. The stationary device does not necessarily include its own output unit that outputs the measurement result in at least one form perceptible to a human.

[0059] Each gas detector 1.1, 1.2 has a detection range Det.1, Det.2. Each gas detector 1.1, 1.2 is capable of measuring the concentration of at least one target gas within its respective detection range Det.1, Det.2. The detection ranges Det.1, Det.2, as well as the detection ranges of other sensors, some of which are described below and some of which are not shown, together cover at least that part of the spatial area Ar in which people may be present.

[0060] Each gas detector 1.1, 1.2 is capable of generating a signal. This signal includes information about the measured target gas concentration. In one embodiment, the signal includes information on whether the measured target gas concentration is within or outside a predefined range. For a harmful gas, the signal typically includes information on whether the target gas concentration is above or below a predefined upper limit. Similarly, for a vital gas, the signal includes information on whether the target gas concentration is below or above a predefined lower limit. Each upper limit is set such that no danger to humans can occur if the target gas concentration is less than or equal to the upper limit.Accordingly, each lower limit is set such that no hazard can occur if the target gas concentration exceeds the lower limit. In another embodiment, the signal includes an indication of the measured target gas concentration. These embodiments can be combined.

[0061] In one embodiment, an upper concentration limit is specified for each harmful target gas, for example, in ppm (parts per million). In another embodiment, a higher and a lower upper limit are specified for at least one harmful target gas. If this harmful target gas occurs in conjunction with at least one other specific harmful target gas, the lower lower limit applies; otherwise, the higher upper limit applies. For example, a lower upper limit is specified for carbon monoxide (CO) and hydrogen cyanide (HCN) if these two harmful target gases occur together; otherwise, a higher upper limit applies.

[0062] It is possible that gas detectors 1.1 and 1.2 are all capable of detecting the same target gas. It is also possible that gas detectors 1.1 and 1.2 are capable of detecting at least two different target gases.

[0063] A stationary smoke detector 1.3 is capable of detecting an indication of smoke. Smoke is, as is well known, often an indication of fire. The smoke detector 1.3 also has a detection range Det.3. A stationary flame detector 1.4 is capable of detecting the presence of flames and heat within its detection range Det.4. Optionally, a heat detector (not shown) can detect the presence of extreme heat. It is also possible that a water level sensor (also not shown) can detect the presence of a rising water level, which is therefore dangerous for people, for example, flooding in a body of water or building.

[0064] In the illustrated embodiment, two gas detectors 1.1, 1.2, one smoke detector 1.3 and one flame detector 1.4 are used. Of course, other numbers of gas detectors, smoke detectors and flame detectors, as well as other devices, are also possible.

[0065] Preferably, each gas detector 1.1, 1.2 and the smoke detector 1.3 each comprise a measuring chamber, and the measuring chamber is capable of receiving a gas sample from the detection range Det.1, Det.2, Det.3. Different detection or measurement principles are possible, such as how a gas detector 1.1, 1.2 is able to detect a target gas in a gas sample and / or measure the concentration of a target gas in the gas sample. The two gas detectors 1.1, 1.2 can use the same measurement principle or different measurement principles. For example, a radiation source emits electromagnetic radiation or sound into the measuring chamber, a target gas in the measuring chamber attenuates the radiation or sound in a specific wavelength range, and a detector measures the intensity of incident radiation or sound in this wavelength range. The measured intensity correlates with the target gas concentration. The smoke detector 1.3 can apply a corresponding measurement principle.

[0066] A signal processing alarm unit 10 in the central rescue station Z receives a signal from each of the two gas detectors 1.1 and 1.2, the smoke detector 1.3, and the flame detector 1.4. In the exemplary embodiment, this signal includes information about the respective geoposition of this sensor and optionally a timestamp for a measurement.

[0067] In one embodiment, the received signal from a gas detector 1.1, 1.2 contains information about a measured target gas concentration. The alarm device 10 determines whether this target gas concentration is above the predefined upper limit (harmful gas) or below the lower limit (essential gas). In another embodiment, the gas detector 1.1, 1.2 itself determines whether the target gas concentration is above the upper or below the lower limit, and the signal includes information about this result. The signal from the smoke detector 1.3 and the signal from the flame detector 1.4 each contain at least the information of whether smoke or fire has occurred.

[0068] The term "alarm situation" is used below. An alarm situation occurs when at least one target gas concentration is above the specified upper limit or below the lower limit, and / or when smoke and / or flames have been detected. The alarm device 10 therefore detects the event that at least one alarm situation has occurred.

[0069] In one embodiment, at least one image capture device (not shown) repeatedly generates images of a portion of the spatial area. These images are transmitted to the central rescue station Z and displayed there on a screen 5. An operator monitors the displayed images and decides whether an alarm situation has occurred.

[0070] The alarm device 10 controls an output unit 2. Depending on the control signal, this output unit 2 can issue messages that can be perceived by a person, particularly audibly. An issued message describes, in particular, the measures that must now be taken. One such measure is that the monitored area Ar must be evacuated.

[0071] A stationary display unit 3 indicates, in a way perceptible to a person, where one should go to leave the now dangerous area Ar, with the display unit 3 specifically indicating the direction visually. In the example shown, the display unit 3 visually indicates a direction to a safe destination, for example, to the assembly point Sp. In one embodiment, the alarm device 10 controls the display unit 3. The controlled output unit 3 changes its state and lights up or flashes to reduce the risk of a person not perceiving the indicated direction.

[0072] These controlled devices 2, 3 are only examples.

[0073] When the alarm device 10 detects an alarm situation, it generates an alarm message AN, which preferably includes automatically generated information about the alarm situation. This alarm message AN is broadcast via radio waves and / or wired transmission, preferably via broadcasting. Any suitable receiver within a radius of the alarm device 10 receives the alarm message AN.

[0074] In one implementation, the alarm device 10 generates not only the alarm message AN in an alarm situation, but also an alarm situation signal AS. This alarm situation signal AS includes a description of the alarm situation, for example an impermissible target gas concentration, smoke, or flames, as well as a description of the geoposition of the sensor that detected the alarm situation.

[0075] Optionally, the alarm message AN and / or the alarm situation signal AS also include information on whether a pre-alarm or a main alarm is being issued. In the event of a main alarm, the area Ar must be evacuated immediately. A pre-alarm indicates that a main alarm may be triggered soon.

[0076] For example, in Fig. 1. An alarm situation signal AS is shown. The alarm situation signal AS contains an indication of an alarm situation, in this example an impermissible concentration of a target gas, as well as the geoposition Pos.1.1 of the gas detector 1.1 that measured this impermissible target gas concentration.

[0077] An operator can also activate an alarm activation unit 8, for example, if a bomb threatens, a severe thunderstorm is imminent, or an evacuation drill is to be conducted. An earlier configuration using an image capture device was described. This configuration allows the following sequence: The operator has decided that an alarm situation exists. This decision is made by the operator after visually evaluating images from the image capture device, which are displayed on screen 5. For example, an operator detects a rising water level in an image and decides that this constitutes an alarm situation.

[0078] Activating the alarm activation unit 8 causes the alarm device 10 to be activated. The alarm device 10 then triggers the step described above whereby the output unit 2 and the optical display unit 3 issue messages and the alarm message is generated and broadcast and / or transmitted in another way.

[0079] Fig. Figure 2 shows an example of a monitored spatial area Ar, here a floor of a building, where the spatial area Ar is represented by a floor plan. The safe destination position, here the assembly point Sp, is located outside this building. An escape route Fw is shown, which begins at a starting geoposition Pos.s and leads out of the building Ar and through a door T to the assembly point Sp. This escape route Fw first passes the display unit 3 and then under the smoke detector 1.3. Two intermediate geopositions Pos.a and Pos.b on the escape route Fw are shown. In addition, another escape route Fw.x is shown, which begins at a starting geoposition Pos.x and leads past another display unit 3.1 and under the smoke detector 1.3. The escape aid order

[0080] Fig. 3 and Fig. Figure 4 shows two different embodiments of the escape aid arrangement of the exemplary embodiment. Identical reference numerals have the same meaning. Unless expressly stated otherwise, the following description refers to both embodiments.

[0081] The escape assistance order includes - at least one portable escape aid device 100, 100.1, 100.2, - at least one signal processing navigation unit 20.l, 20.z and - multiple sensors.

[0082] A user B, B.1, B.2 carries the escape aid device 100, 100.1, 100.2, for example, attached to protective equipment or other clothing. In one configuration, the escape aid device 100, 100.1, 100.2 includes a smartphone. It is also possible to install a software program, in particular an app, on a standard smartphone or smartwatch, thereby transforming the smartphone / smartwatch into an escape aid device 100, 100.1, 100.2.

[0083] In the embodiment described in Fig. As shown in Figure 3, the navigation unit 20.l belongs to the portable escape aid device 100 and is therefore referred to below as the local navigation unit 20.l. For example, the navigation unit 20.l uses a processor and other components of the smartphone. It is also possible that some components of the escape aid device 100 are located outside the smartphone. For clarification, Figure 3 shows... Fig. 3. Some components are shown side by side. It is possible that the smartphone provides all the components of the escape aid device 100.

[0084] In the embodiment according to Fig. 4. The navigation unit 20.z is arranged outside of each escape aid device 100.1, 100.2, preferably as a central stationary device, and is hereinafter referred to as the central navigation unit 20.z. It is possible that the same signal processing device performs both the functions of the alarm device 10 and the functions of the central navigation unit 20.z. In an alternative implementation, the central navigation unit 20.z is a component of one of the escape aid devices 100.1, 100.2, while the other escape aid devices do not include their own navigation unit.

[0085] Examples are given in Fig. Figure 4 shows two escape aid devices 100.1 and 100.2, carried by a user B.1 and another user, here a female user B.2. Each escape aid device 100.1 or 100.2 is at least temporarily in a bidirectional data connection with the central navigation unit 20.z. The data connection is established, for example, when the following two conditions are met: User B.1 or B.2 has switched on their escape aid device 100.1 or 100.2. They are located in spatial area Ar.

[0086] The following components belong to the escape aid device 100, 100.1, 100.2, which is carried by user B, B.1, B.2: - one vital parameter sensor each for 50, 50.1, 50.2, - one geoposition sensor each 40, 40.1, 40.2, - each a user interface 30, 30.1, 30.2 with an input unit and an output unit and - optionally one camera each.

[0087] The escape aid device 100, 100.1, 100.2 also includes a communication unit 25, 25.1, 25.2, respectively. This communication unit 25, 25.1, 25.2 receives messages via radio waves from spatially distant transmitters. The central navigation unit 20.z comprises a communication unit 6. In the configuration according to Fig. 4 Data is exchanged between the escape aid device 100.1, 100.2 and the central navigation unit 20.z using the communication units 25.1, 25.2 and 6.

[0088] A message which the communication unit 25 of the escape aid device 100 according to Fig. 3 and the communication unit 6 of the central navigation unit 20.z according to Fig. 4 receives an alarm message AN from the alarm device 10. It is possible, but not necessary thanks to the central navigation unit 20.z, that the escape aid device 100.1, 100.2 also directly receives and processes the alarm message AN.

[0089] User B, B.1, B.2 wears the vital parameter sensor 50, 50.1, 50.2 on their body. The vital parameter sensor 50, 50.1, 50.2 measures at least one vital parameter of user B, B.1, B.2, in particular their heart rate, respiratory rate, blood pressure, and / or blood oxygen saturation. The vital parameter sensor 50, 50.1, 50.2 is, for example, a component of a device that user B, B.1, B.2 wears on their wrist or arm. The vital parameter sensor 50, 50.1, 50.2 generates a signal that includes information about each measured vital parameter. This signal is transmitted to the navigation unit 20.1, 20.z via a wired data connection within the escape aid device 100 (design according to [reference to be added]). Fig. 3) or via a wireless data connection using radio waves (design according to Fig. 4).

[0090] The geoposition sensor 40, 40.1, 40.2 measures its own geoposition and thus with sufficient accuracy the geoposition of the user B, B.1, B.2, who carries the escape aid device 100, 100.1, 100.2 to which the geoposition sensor 40, 40.1, 40.2 belongs.

[0091] The user interface 30, 30.1, 30.2 preferably comprises a touch-sensitive screen, for example, the screen of the respective smartphone. The escape aid device 100, 100.1, 100.2 can visually output images and other representations on this screen. Hereinafter, the term output unit and the reference numerals 30, 30.1, 30.2 are used for this unit; it is provided by the touch-sensitive screen. In one embodiment, the output unit 30, 30.1, 30.2 of the escape aid device 100, 100.1, 100.2 additionally comprises at least one of the following devices: - optical signaling elements, - a loudspeaker, - optional additional acoustic signaling elements, - a head-up display, - glasses for virtual reality (VR), - a haptic alarm unit, in particular an alarm unit that emits an alarm by means of vibrations.

[0092] The local navigation unit 20.l processes messages received by the escape aid device 100 via the communication unit 25, including the alarm message AN. The central navigation unit 20.z processes messages received by the central navigation unit 20.z via the communication unit 6.

[0093] The navigation unit 20.l, 20.z also processes various signals. These include, on the one hand, signals generated by a sensor of the escape aid device 100, 100.1, 100.2 itself, and on the other hand, signals generated by at least one spatially distant sensor. The communication unit 6, 25 receives various messages, each containing a signal, from at least one spatially distant sensor. In the exemplary embodiment, each signal generated by a spatially distant sensor includes an identifier for the current geoposition of that sensor. If the sensor is used as a stationary device, this current geoposition can be measured in advance when the sensor is positioned. It is also possible for the sensor to be carried by a person who remains connected to a geoposition sensor.

[0094] The navigation unit 20.l, 20.z processes, on the one hand, a signal from the vital parameter sensor 50, 50.1, 50.2 and the geoposition sensor 40, 40.1, 40.2.

[0095] On the other hand, the navigation unit 20.l, 20.z receives and processes an alarm situation signal from each of the two stationary gas detectors 1.1 and 1.2, as well as from the smoke detector 1.3 and the flame detector 1.4, which are exemplified in Fig. 1 will be shown. It is possible that the navigation unit 20.l, 20.z receives the signal directly from the respective sensor 1.1, 1.2, 1.3, 1.4.

[0096] In the exemplary embodiment, the navigation unit 20.l, 20.z receives and processes the alarm situation signals from the alarm device 10. As already explained above, an alarm situation signal AS comprises, on the one hand, information about a detected alarm situation, for example, an impermissible target gas concentration, smoke, or flames, and on the other hand, an indication of the geoposition of the sensor 1.1, 1.2, 1.3, 1.4 that detected this alarm situation. For example, in Fig. Figure 1 shows the alarm situation signal AS. The design whereby the navigation unit 20.l, 20.z receives the alarm situation signal from the alarm device 10 and not directly from the sensor 1.1, 1.2, 1.3, 1.4, eliminates the need to define a common transmission protocol for each sensor 1.1, 1.2, 1.3, 1.4 and for the navigation unit 20.l, 20.z. Furthermore, it is not necessary for the navigation unit 20.l, 20.z to evaluate a measured value from a sensor 1.1, 1.2, 1.3, 1.4 to decide for itself whether this measured value indicates an alarm situation or not.

[0097] Note: In the exemplary embodiment, the alarm device 10 is a stationary device that transmits an alarm message AN and an alarm situation signal AS via broadcasting to a multitude of receivers, including the navigation unit 20.l, 20.z. It is also possible for the same device to perform both the functions of the alarm device 10 and the functions of a navigation unit 20.l, 20.z. This device can be a stationary device or a component of an escape aid device.

[0098] Furthermore, in the exemplary embodiment, the navigation unit 20.l, 20.z receives and processes a signal from a humidity sensor 51, a signal from a temperature sensor 52, and a signal from a wind sensor 53. The humidity sensor 51 measures the ambient humidity, the temperature sensor 52 measures the temperature, and the wind sensor 53 measures wind direction and speed, all within their respective environments. In one embodiment, the sensors 51, 52, and 53 are arranged spatially remotely from the escape aid device 100, 100.1, 100.2, preferably as stationary devices; in another embodiment, they are integrated into the escape aid device 100, 100.1, 100.2. It is possible that the navigation unit 20.l, 20.z receives and processes signals from additional sensors not shown here.

[0099] The navigation unit 20.l, 20.z has at least temporary read access to an area data memory 23. A map of the monitored spatial area Ar is stored in the area data memory 23 in a computer-readable format. Preferably, this map includes, in addition to a site plan of area Ar, information about bottlenecks in spatial area Ar, such as doors, passageways, or stairs, as well as information about differences in elevation. Optionally, the stored map includes a floor plan for each floor of a multi-story building. The map also shows the position of the or each safe target position Sp relative to spatial area Ar.

[0100] Furthermore, in the exemplary embodiment, the local navigation unit 20.l has at least temporary read access to a user data memory 22. Various pieces of information about user B are stored in this user data memory 22. To prevent unauthorized access to the information in the user data memory 22, the navigation unit 20.l only has access to the information in the user data memory 22 if user B has previously authorized themselves successfully. The information stored in the user data memory 22 in the exemplary embodiment includes the following: - What visual impairments does user B have? - What hearing impairments does user B have? - What impairments does user B experience when walking and / or running? - What breathing difficulties does user B experience? - Which natural languages ​​can user B read and understand? - With which spatial areas is user B very familiar? - What safety training has user B completed?

[0101] In one configuration, the escape aid device 100 retrieves this information in advance after user B has successfully authorized themselves by accessing a central database. Of course, it is possible that no information regarding a restriction is stored for user B.

[0102] Accordingly, the central navigation unit 20.z has at least temporary read access to each of the user data stores 22.1 and 22.2, where information about user B.1 and user B.2, respectively, is stored. This information may be physically stored in a single central data store to which the central navigation unit 20.z has read access. Alternatively, information about a user's impairments may be stored on an escape aid device 100, 100.1, 100.2, or on another device carried by user B.1 or B.2, such as a smartphone or smartwatch.

[0103] Users B, B.1, and B.2 can enter information using the input unit of user interface 30, 30.1, and 30.2. This allows users B, B.1, and B.2 to enter additional, currently valid information about themselves. This includes the following information, which users B, B.1, and B.2 can enter even before an alarm message is received: - What personal protective equipment is user B, B.1, B.2 currently wearing? Examples include a safety helmet, protective clothing, a self-contained breathing apparatus, or an escape hood. - Is user B, B.1, B.2 currently injured? If so: how?

[0104] Furthermore, the user B, B.1, B.2 can make entries regarding the escape route, in particular an entry that an escape route is currently not accessible. Triggering events

[0105] The navigation unit 20.l, 20.z evaluates incoming messages and signals and decides whether an alarm situation has occurred for at least one user B, B.1, B.2 in the monitored spatial area Ar. Specifically, the navigation unit 20.l, 20.z checks whether an alarm message AN has been received. This alarm message AN indicates that an alarm situation has occurred for each user B, B.1, B.2 in the spatial area Ar.

[0106] One configuration takes into account the possibility that, although no general alarm situation has occurred and therefore no alarm message AN has been generated, an alarm situation nevertheless exists for a specific user B, B.1, B.2. For example, the information stored in the respective user data memory 22, 22.1, 22.2 indicates that user B, B.1, B.2 is experiencing respiratory distress. Therefore, even with relatively low smoke exposure, they must leave the spatial area Ar. Or, user B, B.1, B.2 is currently in a condition that constitutes an alarm situation for that user B, B.1, B.2. This current user condition is determined by the navigation unit 20.1, 20.z based on a signal from that user's vital parameter sensor 50, 50.1, 50.2.

[0107] In one configuration, the navigation unit 20.l, 20.z automatically decides that user B, B.1, B.2 must immediately leave area Ar due to their current physical condition and / or the current situation within spatial area Ar. For this decision, the navigation unit 20.l, 20.z evaluates a signal from the vital parameter sensor 50, 50.1, 50.2 that user B, B.1, B.2 carries as part of the escape aid device 100, 100.1, 100.2. The navigation unit 20.l, 20.z also evaluates information about user B, B.1, B.2 that is stored in the user data memory 22, 22.1, 22.2.

[0108] According to this configuration, the navigation unit 20.l, 20.z additionally receives and processes an alarm situation signal AS from the alarm device 10 or from each gas detector 1.1, 1.2, from each smoke detector 1.3, and from each flame detector 1.4. It also receives and processes the signal, or at least one signal, from the vital parameter sensor 50, 50.1, 50.2. The navigation unit 20.l, 20.z evaluates these signals and decides whether an alarm situation has currently occurred for user B, B.1, B.2.

[0109] In one implementation, the navigation unit 20.l, 20.z has derived a value range for each target gas that can occur in the spatial area Ar and whose presence is detected by a gas detector 1.1, 1.2. This value range depends on a predefined upper or lower limit and, in one embodiment, on information about a restriction for user B, B.1, B.2, with this information being stored in the user data memory 22, 22.1, 22.2. According to this implementation, the received alarm situation signal AS includes an indication of the measured target gas concentration. The navigation unit 20.l, 20.z decides whether the measured target gas concentration lies within the value range that is permissible for this user B, B.1, B.2 or not. Calculating an escape route

[0110] As just explained, the navigation unit 20.l, 20.z detects that an alarm situation exists for every person in spatial area Ar or at least for a specific user B, B.1, B.2. If the navigation unit 20.l, 20.z receives an alarm message AN, an alarm situation exists for every person in spatial area Ar. The navigation unit 20.l, 20.z itself detects a specific alarm situation for a user B, B.1, B.2, for which it preferably evaluates a signal from the vital parameter sensor 50, 50.1, 50.2 and optionally other signals and / or stored information.

[0111] In response to the detection of an alarm situation for each or at least one user within spatial area Ar, the navigation unit 20.l, 20.z calculates an escape route Fw for each user B, B.1, B.2, who must immediately leave spatial area Ar. This escape route Fw begins at the current geoposition Pos.s of user B, B.1, B.2 (more precisely: at the current geoposition Pos.s of the respective geoposition sensor 40) and leads to a safe destination outside spatial area Ar, in this case, the assembly point Sp. In one embodiment, several safe destination positions are predefined, and the escape route Fw leads to one of these safe destination positions. It is possible that the same escape route Fw is calculated for different users.

[0112] In a preferred embodiment, the navigation unit 20.l, 20.z calculates at least one escape route candidate. Each escape route candidate begins at the current geoposition Pos.s of the geoposition sensor 40, 40.1, 40.2 and leads to the safe destination position Sp. It is possible for different escape route candidates to begin at the same current geoposition Pos.s and lead to the same safe destination position Sp, but via different routes.

[0113] To locate a potential escape route, the navigation unit 20.l, 20.z uses the map stored in area data memory 23, which describes the spatial area Ar and the safe destination position Sp. The navigation unit 20.l, 20.z calculates a rating for each potential escape route. The following describes the parameters included in the rating of an escape route candidate. The navigation unit 20.l, 20.z applies a computer-evaluable rating rule to calculate the rating for a potential escape route, where the rating rule includes at least one of the parameters described below as a variable.

[0114] By evaluating the computer-evaluable map in the area data storage 23, the navigation unit 20.l, 20.z determines how long a user B, B.1, B.2 needs on average to reach a safe destination position Sp from their current geoposition Pos.s via this escape route candidate. The expected travel time incorporates the length of the escape route candidate as well as information about bottlenecks and elevation changes. The expected travel time is one parameter used to evaluate an escape route candidate.

[0115] As previously explained, the navigation unit 20.l, 20.z receives signals from each gas detector 1.1, 1.2, each smoke detector 1.3, each flame detector 1.4, and each other device monitoring spatial area Ar. The navigation unit 20.l, 20.z checks whether a potential escape route leads through a sub-area of ​​spatial area Ar where a target gas is present at an impermissible concentration, or where smoke, flames, or other detected hazards are present. An impermissible target gas concentration, smoke, or flames may also be present in an area outside spatial area Ar that includes a safe destination position Sp.

[0116] Preferably, the navigation unit 20.l, 20.z not only determines a current hazard arising from an impermissible target gas concentration, smoke, or flames for a user B, B.1, B.2 on a potential escape route, but also makes a prediction for the future development of the target gas concentration, smoke, or flames. For this purpose, the navigation unit 20.l, 20.z extrapolates the respective measurement series in the respective signals of each gas detector 1.1, 1.2, each smoke detector 1.3, each flame detector 1.4, and each other sensor. In one embodiment, the navigation unit 20.l, 20.z additionally uses a signal from the wind sensor 53. By evaluating this signal and the stored map, the navigation unit 20.l, 20.z predicts, at least approximately, where a cloud containing a harmful target gas or smoke will move. The navigation unit distinguishes between 20.l, 20.The suitability of a potential escape route depends on whether it leads through a building or across open terrain. If a potential escape route is currently or will be affected by an impermissible concentration of target gases, smoke, or flames, it will receive a lower rating.

[0117] Note: A potentially congested escape route is not automatically ruled out as an escape route. On the one hand, it is possible that there is currently no less congested or even uncongested escape route from spatial area Ar. On the other hand, it is possible that users B, B.1, and B.2 can use this escape route despite the congestion thanks to protective equipment.

[0118] The navigation unit 20.l, 20.z continues to evaluate signals from each humidity sensor 51, each temperature sensor 52, each wind sensor 53, and each additional environmental condition sensor. Adverse environmental conditions can also result in a candidate escape route receiving a lower rating. For example, a candidate escape route will receive a lower rating if a segment of the candidate escape route passes through an area that is flooded due to precipitation or high water, or that is exposed to strong winds, has a high temperature, or is not illuminated by sunlight or artificial light.

[0119] Furthermore, the navigation unit 20.l, 20.z uses information about user B, B.1, B.2 to calculate a rating for an escape route candidate. This information can be specific to these users B, B.1, B.2 and is stored in the user data store 22, 22.1, 22.2. Some examples of how information about a user B, B.1, B.2 is used to rate an escape route candidate are: If a user B, B.1, or B.2 has a mobility impairment according to the stored information, an escape route candidate will receive a low rating if the escape route Fw is poorly suited for a person with mobility impairments, for example, if it leads over stairs or ramps or through a flooded area. Such a candidate is not automatically excluded, particularly since there can be no other candidate.

[0120] An escape route candidate may be poorly suited if a segment of the escape route candidate is very narrow and the user (B, B.1, B.2) carries relatively bulky protective equipment. This leads to a lower rating.

[0121] Conversely, if a user B, B.1, B.2 is wearing appropriate protective equipment, such as an escape hood, then an escape route candidate may be suitable even if the escape route candidate includes a segment with an impermissible target gas concentration or high temperatures. In one embodiment, the escape aid device 100, 100.1, 100.2 prompts the user B, B.1, B.2 to put on an escape hood and records a corresponding confirmation from the user B, B.1, B.2 that the escape hood has now actually been put on.

[0122] In one configuration, when an alarm situation occurs, a description of the monitored area Ar is displayed on screen 5 in the control center Z, for example, a floor plan. This description includes the respective measured geoposition of each user B, B.1, B.2 of an escape aid device 100, 100.1, 100.2, as well as the calculated escape routes, as shown in the example in Fig. 2 is shown. Optionally, a label indicating the measured current state of user B, B.1, B.2 is also displayed on screen 5. The output on screen 5 makes it easier for an operator to initiate a rescue measure if necessary. Generating an escape route description

[0123] As just explained, the navigation unit 20.l, 20.z calculates an escape route Fw for each user B, B.1, B.2 who must immediately leave the spatial area Ar. This escape route begins at the current geoposition of user B, B.1, B.2 and leads to a safe destination position Sp. Fig. 2 is an example of an escape route Fw, which begins in the geoposition Pos.s and leads to the assembly point Sp outside the spatial area Ar.

[0124] The navigation unit 20.l, 20.z generates an escape route description that describes the calculated escape route Fw in at least one way perceptible to a human and controls the escape aid device 100, 100.1, 100.2. The controlled escape aid device 100, 100.1, 100.2 outputs the generated escape route description on its output unit 30, 30.1, 30.2.

[0125] The escape route description depends on the current state of user B, B.1, B.2. Navigation unit 20.l, 20.z determines the current state of user B, B.1, B.2 using a signal from vital parameter sensor 50, 50.1, 50.2. Therefore, navigation unit 20.l, 20.z may generate several different escape route descriptions for the same escape route Fw. This will be explained below with reference to... Fig. 4 described.

[0126] In the situation exemplified in Fig. As shown in Figure 4, two users B.1 and B.2 are in the same spatial area Ar when an alarm message AN is generated. The two geopositions where these two users B.1 and B.2 are located at this time correspond sufficiently closely to the initial geoposition Pos.s, which is shown in Figure 4. Fig. 2 is shown.

[0127] The central navigation unit 20.z receives the alarm message AN and, in this example, calculates the same escape route Fw for both users B.1 and B.2. Navigation unit 20.z generates an escape route description Des.1 for user B.1 and a different escape route description Des.2 for user B.2. The two escape route descriptions Des.1 and Des.2 include different display elements.

[0128] In the example shown, the central navigation unit 20.z evaluates a signal from the vital parameter sensor 50.1 of user B.1 and a signal from the vital parameter sensor 50.2 of user B.2. The navigation unit 20.z detects a significantly increased respiratory rate and heart rate in user B.1, while user B.2 exhibits a normal respiratory rate and heart rate. From this, the navigation unit 20.z automatically concludes that user B.1 is currently panicking, while user B.2 is not. Escape route description Des.1 is therefore generated in a way that is understandable even for a panicking user, while escape route description Des.2 includes more detailed information.

[0129] In this example, the escape route description Des.1 for panicked user B.1 comprises only two images: an image of the optical display unit 3 and an image of the smoke detector 1.3, as well as an arrow indicating that user B.1 must first pass the display unit 3 and then the smoke detector 1.3 to leave the spatial area Ar and reach the assembly point Sp. Even a panicked user B.1 is usually able to understand such a description and act accordingly. In contrast, the escape route description Des.2 for user B.2 includes a floor plan of the spatial area Ar, a representation of the assembly point Sp, and a representation of the escape route Fw within the floor plan.

[0130] As previously explained, in the example shown, the navigation unit 20.z determined that user B.1 had panicked, while user B.2 had not. In one implementation, the escape route description Des.2 for user B.2 additionally includes a description of user B.1's current geolocation and a note indicating that user B.1 had panicked. This enables user B.2 to locate the panicked user B.1 and escort them along their own escape route Fw to the assembly point Sp. Naturally, it is user B.2's decision whether or not to do so.

[0131] In one embodiment, the navigation unit 20.l, 20.z continuously determines the current geoposition of user B, B.1, B.2. For this purpose, the navigation unit 20.l, 20.z uses a signal from the respective geoposition sensor 40, 40.1, 40.2. The navigation unit 20.l, 20.z inserts a marker indicating the determined current geoposition of user B, B.1, B.2 into the escape route description Des.2 along with the floor plan. An example is shown in Fig. 4 shows that the escape route description Des.2 contains a marking of the current position Pos.a of user B.2.

[0132] Fig. Figure 5 shows a possible implementation of the escape route description Des.1, which the navigation unit 20.l, 20.z generates for the panicked user B.1 and which is output on the output unit 30.1 of the escape aid device 100.1. This escape route description Des.1 comprises a sequence of three images: Des.1.a, Des.1.b, and Des.1.c. A set of images is stored in the area data memory 23, including the three images Des.1.a, Des.1.b, and Des.1.c. For each image Des.1.a, Des.1.b, and Des.1.c, a geolocation is stored, specifically the geolocation from which that image Des.1.a, Des.1.b, and Des.1.c was generated.

[0133] The navigation unit 20.l, 20.z generates the image sequence, using the calculated escape route Fw and the geopositions of the images Des.1.a, Des.1.b, Des.1.c from the image set. A user B.1 moving along the calculated escape route Fw sees the images Des.1.a, Des.1.b, Des.1.c of the image sequence in this order.

[0134] When user B.1 is at the starting geoposition Pos.s, display unit 30.1 shows image Des.1.a. This image Des.1.a shows optical display unit 3 and is the first intermediate destination on the escape route Fw. Image Des.1.a is displayed until user B.1 reaches intermediate geoposition Pos.a – more precisely, until user B.1's current geoposition deviates from intermediate geoposition Pos.a by less than a predefined upper limit. At this point, output unit 30.1 changes its display and now shows image Des.1.b, namely an image of smoke detector 1.3. As soon as user B.1 reaches intermediate geoposition Pos.b, output unit 30.1 changes its display again and now shows the assembly point Sp. In many cases, this escape route description Des.1 can also be understood by a panicked user B.1.1. Capture and implement with sufficient reliability, even under relatively poor lighting conditions.

[0135] As just with reference to Fig. 4 and Fig. As explained in section 5, the navigation unit 20.l, 20.z generates two different escape route descriptions, Des.1 and Des.2, for the same escape route Fw. The reason for these different escape route descriptions, Des.1 and Des.2, is as follows: The navigation unit 20.l, 20.z detected that user B.1 panicked, while user B.2 did not, when the alarm message AN arrived. Another or additional reason is as follows: According to information about user B.2 stored in data memory 22.2, user B.2 is familiar with the spatial area Ar and can therefore use a floor plan to find escape route Fw. No such information is stored for user B.1.

[0136] The above discussion referred to Fig. Section 5 describes how output unit 30.1 outputs the escape route description Des.1. Output unit 30.1 outputs one image each Des.1.a, Des.1.b, and Des.1.c, and it outputs a new image when user B.1 reaches a specific geoposition Pos.a or Pos.b. For this purpose, navigation units 20.l and 20.z continuously determine the user's current geoposition and control output unit 30.1 as described above.

[0137] In a different configuration, output unit 30.1 displays an image until user B.1 confirms, through a corresponding user input, that they have reached the depicted object 3, 1.3. The user interface provided by output unit 30.1 captures this user input, and navigation unit 20.1, 20.z causes output unit 30.1 to display the next image. These two implementations can be combined: Output unit 30.1 displays the next image when user B.1 has entered that they have reached object 3, 1.3, which is shown in the currently displayed image, or when user B.1 has reached the geolocation of the image.

[0138] According to the invention, the escape route description Des.1, Des.2 generated by the navigation unit 20.l, 20.z and output by the output unit 30, 30.1, 30.2 depends on the current state of user B, B.1, B.2 and / or on stored information about user B, B.1, B.2. In one embodiment, user B, B.1, B.2 can use a selection unit of the escape aid device 100, 100.1, 100.2 to select which escape route description Des.1, Des.2 should be generated and output. This user input overrides a decision made automatically by the navigation unit 20.l, 20.z. Note: As a rule, user B, B.1, B.2 can only make this selection if they are not panicking. It is also possible that the navigation unit blocks the selection unit if navigation unit 20.l, 20.z has detected that user B, B.1, B.2 is panicking. This prevents navigation unit 20.l, 20.z, that the panicked user B, B.1, B.2 unintentionally selects a different escape route description that is not currently suitable for him.

[0139] In one embodiment, the output unit 30, 30.1, 30.2 can additionally output acoustic voice messages to the user 100, 100.1, 100.2. It is possible that an escape route description Des.1, Des.2 additionally includes voice messages, and that the output of the escape route description Des.1, Des.2 includes the output of the voice messages. For example, any image that, according to the embodiment of Fig. 4 or Fig. 5 is output, additionally linked to a language file that describes the displayed object. Preferably, several language files in different languages ​​are stored, and the navigation unit 20.l, 20.z selects a language file in a language that the user understands according to the stored user information. Review and update

[0140] As previously explained, the navigation unit 20.l, 20.z determines the current geoposition Pos.s of user B, B.1, B.2 at the time it receives an alarm message AN and then calculates an escape route Fw starting from the current geoposition Pos.s. For this determination, the navigation unit 20.l, 20.z uses a signal from the geoposition sensor 40, 40.1, 40.2.

[0141] Preferably, the navigation unit 20.l, 20.z continuously determines the current geoposition of user B, B.1, B.2, at least until user B, B.1, B.2 has reached the target position Sp or a safe target position Sp. For this purpose, the navigation unit 20.l, 20.z uses a signal from the geoposition sensor 40, 40.1, 40.2. In one implementation, the navigation unit 20.l, 20.z determines the current geoposition at a fixed sampling frequency. In another embodiment, the navigation unit 20.l, 20.z determines the current geoposition at a lower sampling frequency as long as it has not received an alarm message AN and a specific user does not need to leave the spatial area Ar. This saves electrical energy. As soon as an alarm message AN has been received or a user needs to leave the spatial area Ar, the navigation unit 20.l, 20.z automatically switches to operation with a higher sampling frequency.The higher energy consumption no longer played a role in an alarm situation.

[0142] Navigation unit 20.l, 20.z compares the measured current geoposition of user B, B.1, B.2 with the escape route Fw that navigation unit 20.l, 20.z has calculated for this user B, B.1, B.2. If navigation unit 20.l, 20.z detects that user B, B.1, B.2 has deviated significantly from the calculated escape route Fw, navigation unit 20.l, 20.z preferably reacts to this detection as follows: Navigation unit 20.l, 20.z calculates an updated escape route, where the updated escape route begins at the current geoposition of user B, B.1, B.2 and leads to a safe area. Navigation unit 20.l, 20.z generates a description of the updated escape route. This escape route description is in turn generated depending on the determined current state of user B, B.1, B.2 and optionally on stored information about user B, B.1, B.2.

[0143] It is possible that the navigation unit 20.l, 20.z determines the current state of user B, B.1, B.2 only once, namely after receiving the alarm message AN. Preferably, however, the navigation unit 20.l, 20.z determines the current state of user B, B.1, B.2 again, for which it receives and evaluates the signal from the vital parameter sensor 50, 50.1, 50.2 once more. This is because it is possible that user B, B.1, B.2 has now panicked or, conversely, is no longer panicking.

[0144] In one implementation, the navigation unit 20.l, 20.z checks whether there is further evidence that user B.1, B.2 has panicked. One such further evidence is that user B.1, B.2 is moving forward in a zigzag pattern, even though the escape route itself does not have a zigzag shape.

[0145] If the user B.1, B.2 nevertheless moves forward "on average" along the calculated escape route, i.e., has not deviated too far from the escape route, then the navigation unit 20.l, 20.z in one embodiment calculates a new escape route description for the previously calculated escape route, whereby the new escape route description is adapted to the detected state of the user B.1, B.2.

[0146] The possible situation where a user B.1, B.2 has left the calculated escape route is illustrated by the example of Fig. 2 explained: The panicked user B.1 is supposed to leave the spatial area Ar along escape route Fw. However, he leaves this escape route Fw and arrives at geoposition Pos.x. The navigation unit 20.l, 20.z calculates an updated escape route, which is in Fig. Route 2, designated Fw.x, begins at geoposition Pos.x and also leads to assembly point Sp. Navigation unit 20.l, 20.z determines that user B.1 is still panicking. The generated escape route description for user B.1 describes the updated escape route Fw.x, just like the escape route description Des.1 from Fig. 4 is set up and includes an image of the further display unit 3.1 and an image of the smoke detector 1.3. The escape route description Des.1 can also be displayed as with reference to Fig. 5 described in detail.

[0147] Another feature takes into account the possibility that a segment of a calculated escape route Fw is currently inaccessible. For example, the escape route Fw leads through a passageway, and a door blocks this passageway and cannot be opened. Or a segment is flooded, heavily smoke-filled, or inaccessible due to flames. This situation was not "known" to the navigation unit 20.l, 20.z when calculating the escape route Fw, for example, because no sensor is capable of detecting this situation.

[0148] According to this configuration, the user interface 30, 30.1, 30.2 of the escape aid device 100, 100.1, 100.2 is able to capture a user input with the content "Escape route blocked". This user input is transmitted to the navigation unit 20.l, 20.z.

[0149] In one embodiment, the escape aid device 100, 100.1, 100.2 is designed in such a way that the following sequence is enabled: - The user B, B.1, B.2 uses the camera of the escape aid device 100, 100.1, 100.2 to create at least one image showing the blocked segment of the escape route Fw, for example a blocked door. - The blocked segment has since been made passable again or has become passable again on its own, for example because floodwater has receded. - The step of the user entering "Escape route blocked" has the following effect: The image of the blocked segment of the escape route Fw is transmitted to the navigation unit 20.l, 20.z.

[0150] One implementation takes into account the possibility that the navigation unit 20.l, 20.z receives a user input indicating that escape route Fw is blocked, but in reality, this escape route Fw is not blocked. Possible reasons for this are: - User B, B.1, B.2 mistakenly believes the escape route Fw to be blocked, for example because he thinks a door is locked, when in fact it is merely stiff. - User B, B.1, B.2 accidentally entered "Escape route blocked", for example because user B, B.1, B.2 is panicking. - User B, B.1, B.2 intentionally entered the false information "Escape route blocked".

[0151] In one implementation, an escape aid device 100, 100.1, 100.2 displays a query to its user B, B.1, B.2 asking whether the segment is actually blocked or not. This query is preferably only sent to user B, B.1, B.2 if that user is not currently panicking.

[0152] In one implementation form, the navigation unit 20.l, 20.z only considers an escape route Fw to be blocked if there are n user inputs indicating that this escape route is blocked, where n >= 2 is a predefined number.

[0153] In one embodiment, the navigation unit 20.l, 20.z causes the information about a blocked segment to be transmitted to all escape aid devices 100, 100.1, 100.2 in the monitored area Ar or at least to all escape aid devices in the vicinity of the blocked segment. Preferably, the navigation unit 20.l, 20.z also causes this message to be transmitted to the central rescue station Z. In one embodiment, this message to the escape aid devices 100, 100.1, 100.2 and to the central rescue station Z includes an image of the blocked segment, wherein the user B, B.1, B.2 has taken this image with the camera of their escape aid device 100, 100.1, 100.2 as just described.

[0154] The following situation is also possible: The navigation unit 20.l, 20.z automatically detects, without user input, that the calculated escape route Fw is currently impassable. Specifically, the navigation unit 20.l, 20.z detects that an alarm situation has occurred at a measuring point on the escape route Fw. It is possible that this alarm situation had not yet occurred when the navigation unit 20.l, 20.z received the alarm message AN and subsequently calculated the escape route Fw. For example, the navigation unit 20.l, 20.z receives and processes a signal from a gas detector 1.1, 1.2, a smoke detector 1.3, or a flame detector 1.4. In the exemplary embodiment, the navigation unit 20.l, 20.z receives and processes an alarm situation signal from the alarm device 10, for example, the alarm situation signal AS from Fig. 1. This alarm situation signal AS includes an indication of the geoposition of this stationary device 1.1, 1.2, 1.3, 1.4. The navigation unit 20.l, 20.z detects that the user B, B.1, B.2 has not yet passed this measurement position. In one embodiment, the detection that an alarm situation exists at a position located on the escape route Fw, which the user B, B.1, B.2 has not yet passed, also triggers the navigation unit 20.l, 20.z to calculate a new escape route.

[0155] A configuration was described above in which screen 5 displays a description of the monitored area Ar, its respective geolocation, and optionally the current status of each user B, B.1, B.2 within this area Ar. In one configuration, the description of area Ar also indicates which segments are currently blocked and therefore cannot be part of an accessible escape route.

[0156] It has just been explained that the navigation unit 20.l, 20.z detects, based on user input or a received and processed signal from a sensor, that the calculated escape route Fw is impassable. In response to this detection, the navigation unit 20.l, 20.z calculates a new escape route that begins at the current geoposition Pos.x of user B, B.1, B.2. For the calculation, the navigation unit 20.l, 20.z marks a segment of the old escape route Fw as impassable—more precisely, a segment of a computer-evaluable description of the old escape route Fw. This segment begins at the current geoposition of user B, B.1, B.2, or more generally, at the point on the escape route Fw that is closest to the current geoposition, and has, for example, a predefined length. This prevents the calculated new escape route from also including the segment marked as impassable.

[0157] The preceding sections of this document described the situations in which navigation unit 20.l, 20.z calculates an updated escape route. It is also possible that navigation unit 20.l, 20.z generates a modified escape route description for an unchanged escape route Fw, causing output unit 30, 30.1, 30.2 to display the updated escape route description. One reason for generating an updated escape route description is that user B, B.1, B.2 selects a different type of escape route description on their escape aid device 100 using the selection unit described above. An additional or alternative configuration is described below.

[0158] According to this configuration, the navigation unit 20.l, 20.z continuously evaluates the signal from the vital parameter sensor 50, 50.1, 50.2 of a user B, B.1, B.2 and determines the current state of user B, B.1, B.2. For example, the navigation unit 20.l, 20.z detects that user B, B.1, B.2 was initially not panicking, which is why the navigation unit 20.l, 20.z has generated an escape route description that can only be understood by a calm user, for example, the escape route description Des.2 of Fig. 4. Later, the navigation unit 20.l, 20.z detects that user B, B.1, B.2 has now panicked. Based on this detection, the navigation unit 20.l, 20.z generates an easier-to-understand escape route description, for example, the escape route description Des.1 of Fig. 4 or those of Fig. 5. Escape routes for multiple users

[0159] The following design takes into account the situation where the monitored area Ar must be completely cleared, meaning that all users B, B.1, and B.2 must leave the area Ar. There is a possibility that this could result in a bottleneck of several users. This design reduces the risk of this undesirable event.

[0160] This configuration is described for the case where all users B, B.1, and B.2 are to be guided to the same safe destination, here the assembly point Sp. The configuration is first described using a central navigation unit 20.z.

[0161] As explained above, the central navigation unit 20.z calculates an escape route Fw for each user B, B.1, B.2 who needs to leave the spatial area Ar. According to one implementation, the navigation unit 20.z calculates an estimate for each escape route Fw of how long it will take users B, B.1, B.2 to reach a safe destination Sp from their current geoposition Pos.s via this escape route Fw. This estimated time depends on - of the length of the escape route Fw, - optionally from a permanent or currently occurring bottleneck, - of an impairment of user B, B.1, B.2 when walking or running as well as - from the current state of user B, B.1, B.2, i.e., in particular, whether user B, B.1, B.2 is currently panicking or not.

[0162] The navigation unit 20.z determines which bottlenecks the escape route Fw has by reading the area data memory 23. The navigation unit 20.z determines any potential impairment of users B, B.1, B.2 by reading the user data memory 22, 22.1, 22.2. The navigation unit 20.z determines the current status of users B, B.1, B.2 by evaluating the signal from the vital parameter sensor 50, 50.1, 50.2. The navigation unit 20.z controls the escape aid devices 100, 100.1, 100.2 and thus the display units 30, 30.1, 30.2 in such a way that they do not display the respective escape route descriptions Des.1, Des.2 simultaneously, but with a time delay. The order in which the escape route descriptions Des.1 and Des.2 are displayed depends on the estimated expected time that user B, B.1, or B.2 will need to travel along escape route Fw. The escape route description Des.1 and Des.2 are displayed in the following order:The escape route Fw, which has the shortest time, is displayed first. Optionally, the escape route for a panicked user B.1 is displayed earlier than the escape route for another user B.2.

[0163] In a preferred embodiment, the area data storage contains 23 bottleneck identifiers within the spatial area Ar. Preferably, a identifier indicating the bottleneck's geoposition is stored for each bottleneck. In one embodiment, the navigation unit 20.z counts, for each bottleneck, how many calculated escape routes pass through it. If this number exceeds a predefined upper limit, the navigation unit 20.z selects a calculated escape route and calculates an alternative escape route for that user that does not pass through the bottleneck. The escape route selected by the navigation unit 20.z preferably depends on the current geoposition of users B, B.1, and B.2.

[0164] The possibility was described above that a user B, B.1, B.2 might enter a user input indicating that an escape route Fw is impassable. One reason for this user input could be that many users are waiting at a bottleneck. This user input can also prompt the navigation unit 20.z to calculate a different escape route for this user.

[0165] The previous description refers to a central navigation unit 20.z, which was mentioned above in relation to Fig. 4 was described. With reference to Fig.Section 3 describes a local navigation unit 20.l of an escape aid device 100. If escape aid devices 100 are used with local navigation units 20.l, these escape aid devices 100 exchange messages about calculated escape routes with each other. If necessary, a local navigation unit 20.l calculates an updated escape route Fw.x and applies the principles just described. Reference symbol list 1.1, 1.2 stationary gas warning device, measures the concentration of at least one target gas in its detection range Det.1, Det.2 1.3 Smoke detector, detects the occurrence of smoke in its detection range Det.3 1.4 Flame detector, detects the occurrence of flames and fire and optionally heat within its detection range Det.4 2. Acoustic output unit in the form of a loudspeaker, controlled by the alarm device 10, outputs voice messages 3 optical display units, controlled by alarm device 10, indicate a direction in which one can leave the spatial area Ar. 3.1 Additional optical display unit 5 screens in the central rescue station Z 6 Communication unit of the central navigation unit 20.z 8 Alarm activation unit in the central rescue station Z, can be activated by a person, causes an alarm message to be generated in response to activation. 10. Signal processing alarm device in the central rescue station Z, receives a signal from each stationary gas detector 1.1, 1.2, from the smoke detector 1.3 and from the flame detector 1.4, controls the loudspeakers 2 and the display unit 3, generates a signal for the escape aid device 100, 100.1, 100.2 20.l Local navigation unit, calculates an escape route Fw for user B of the escape aid device 100, belongs to the escape aid device 100 20.z central navigation unit, calculates an escape route Fw for users B.1, B.2 and generates an escape route Fw for each. 22 User data storage, in which information about user B is stored 22.1, 22.2 User data storage, in which information about the user B.1, B.2 is stored. 23 Area data storage, in which a computer-evaluable map of the spatial area Ar and a description of safe target positions are stored. 25, 25.1, 25.2 Communication unit of the escape aid device 100, 100.1, 100.2 30, 30.1, 30.2 touch-sensitive screen of the escape aid device 100, 100.1, 100.2, provides the output unit 40, 40.1, 40.2 Geoposition sensor of the escape aid device 100, 100.1, 100.2, measures the current geoposition of user B, B.1, B.2 50, 50.1, 50.2 Vital parameter sensor of the escape aid device 100, 100.1, 100.2, measures vital parameters of user B, B.1, B.2 51 Humidity sensor, measures the humidity at a measuring position in the spatial area Ar 52 Temperature sensor, measures the temperature at a measuring position in the spatial area Ar 53 Wind sensor, measures the strength and direction of wind at a measuring position in the spatial area Ar 100 portable escape aid device, carried by user B, includes the local navigation unit 20.l, the output unit 30, the geoposition sensor 40, the vital parameter sensor 50 and the communication unit 25, and is designed in a smartphone configuration. 100.1, 100.2 portable escape aid device, carried by user B, comprises the output unit 30.1, 30.2, the geoposition sensor 40.1, 40.2, the vital parameter sensor 50.1, 50.2 and the communication unit 25.1, 25.2, is designed in a smartphone configuration, receives a signal from the central navigation unit 20.z The alarm message, generated by the alarm device 10 due to a sensor signal or activation of the alarm activation unit 8, contains information that an alarm situation has occurred and is transmitted to the navigation unit 20.l, 20.z. Ar monitored spatial area AS Alarm situation signal, generated by the alarm device 10 based on a sensor signal, includes information about an alarm situation and information about the geoposition of the sensor that detected the alarm situation, and is transmitted to the navigation unit 20.l, 20.z. B Users of the escape aid device 100 B.1, B.2 Users of the escape aid device 100.1, 100.2 Des. 1 Description of the escape route Fw for user B.1, is printed on output unit 30.1 Des.1.a, Des.1.b, Des.1.c Images of the escape route description Des.1 Des.2 Description of the escape route Fw for user B.2, is printed on output unit 30.2. Det.1, Det.2 Detection range of the gas detector 1.1, 1.2 Det.3 Detection range of the smoke detector 1.3 Det.4 Detection range of the flame detector 1.4 The fire escape route, calculated by navigation unit 20.l, 20.z, begins at the starting geoposition Pos.s Fw.x further escape route, begins at the starting geoposition Pos.x Item 1.1 Geoposition of the gas warning device 1.1 Pos. a, Pos. b Intermediate geopositions on the escape route Fw Pos.s Starting geoposition of the escape route Fw Pos.x Starting geoposition of the further escape route Fw.x Sp Collection point outside the area Ar T Door in the spatial area Ar Z central rescue station outside the Ar area

Claims

[1] Escape assistance order comprehensive an escape aid device (100, 100.1, 100.2) and a signal processing navigation unit (20.l, 20.z), where the escape aid device (100, 100.1, 100.2) - is designed to be carried by a user (B, B.1, B.2), and - comprising a vital parameter sensor (50, 50.1, 50.2), a geoposition sensor (40, 40.1, 40.2) and an output unit (30, 30.1, 30.2), wherein the vital parameter sensor (50, 50.1, 50.2) is configured to - to measure a vital parameter of the user (B, B.1, B.2) and - to generate a signal comprising information about the measured vital parameter, wherein the geoposition sensor (40, 40.1, 40.2) is designed to - to measure his own current geoposition (Pos.s) and - to generate a signal comprising information about the measured own geoposition (Pos.s), wherein the navigation unit (20.l, 20.z) has read access to a predefined area data storage (23), wherein a computer-evaluable description of the spatial area (Ar) and a computer-evaluable identifier of a predetermined safe target position (Sp) are stored in the area data storage (23), wherein the navigation unit (20.l, 20.z) is designed to receive an alarm message (AN), wherein the alarm message (AN) includes information about the existence of an alarm situation in a spatial area (Ar), the navigation unit (20.l, 20.z) is designed to in response to receiving an alarm message (AN) - to calculate an escape route (Fw) for the user (B, B.1, B.2), wherein the escape route (Fw) starts at the measured current geoposition of the geoposition sensor (40, 40.1, 40.2) and leads to the safe target position (Sp), and - to generate an escape route description (Des.1, Des.2) wherein the escape route description (Des.1, Des.2) describes the calculated escape route (Fw) in a form perceptible to a human, and - to control the output unit (30, 30.1, 30.2), wherein the output unit (30, 30.1, 30.2) is designed to output the generated escape route description (Des.1, Des.2) in response to the control, the navigation unit (20.1, 20.z) is designed to calculate the escape route (Fw) - the signal from the geoposition sensor (40, 40.1, 40.2), - the stored description of the spatial area (Ar) and - to use the stored identifier of the safe target position (Sp), wherein the navigation unit (20.l, 20.z) is designed to generate two different possible escape route descriptions (Des.1, Des.2) for the calculated escape route (Fw), and the navigation unit (20.l, 20.z) is designed to - to classify the current state of the user (B, B.1, B.2) depending on the signal of the vital parameter sensor (50, 50.1, 50.2) and - depending on the classified state of the user (B, B.1, B.2), generate one of the possible escape route descriptions (Des.1, Des.2) as the output escape route description. [2] Escape assistance order according to claim 1, characterized by , that the vital parameter sensor (50, 50.1, 50.2) is designed to measure the user's heart rate and / or respiratory rate as vital parameters (B, B.1, B.2), and the navigation unit (20.l, 20.z) is designed to - to automatically decide, based on the measured heart rate and / or respiratory rate, whether the user (B, B.1, B.2) is currently panicking or not, and - to generate the escape route description (Des.1, Des.2) depending on whether the user (B, B.1, B.2) is currently panicking or not. [3] Escape assistance order according to one of the preceding claims, characterized by , that in the area data storage (23) an image set with a set with several images (Des.1.a, Des.1.b, Des.1.c) and for each image of the image set a geoposition identifier is stored, wherein each stored image (Des.1.a, Des.1.b, Des.1.c) shows a part of the spatial area (Ar) and the stored identifier indicates a geoposition when this image is generated, wherein the navigation unit (20.l, 20.z) is designed to generate an escape route description (Des.1) for a calculated escape route (Fw) using the geoposition identifiers of the image set in such a way, that the escape route description (Des.1) includes a sequence of images with at least one image (Des.1.a, Des.1.b, Des.1.c) of the image set, wherein each image (Des.1.a, Des.1.b, Des.1.c) included in the escape route description (Des.1) shows a part past which the calculated escape route (Fw) passes and wherein the order of the images in the image sequence corresponds to the order in which a user (B.1) moving along the escape route (Fw) reaches the parts of the spatial area (Ar) depicted in the images (Des.1.a, Des.1.b, Des.1.c). [4] Escape assistance order according to one of the preceding claims, characterized by , that the navigation unit (20.1, 20.z) is designed to after the step in which the controlled output unit (30, 30.1, 30.2) outputs the escape route description (Des.1, Des.2), - depending on the signal from the vital parameter sensor (50, 50.1, 50.2), to reclassify the current state of the user (B, B.1, B.2), - depending on the result of the reclassification, to generate an updated escape route description (Des.2) and - to cause the output unit (30, 30.1, 30.2) to output the updated escape route description (Des.2) by means of appropriate control. [5] Escape assistance order according to claim 4, characterized by , that the navigation unit (20.1, 20.z) is designed to after the step in which the controlled output unit (30, 30.1, 30.2) outputs the escape route description (Des.1, Des.2), - using the signal from the geoposition sensor (40, 40.1, 40.2) to determine the current geoposition (Pos.x) of the escape aid device (100, 100.1, 100.2) again and - to compare the newly determined current geoposition (Pos.x) with the calculated escape route (Fw), the navigation unit (20.l, 20.z) is further designed to - to calculate an updated escape route (Fw.x), where the updated escape route (Fw.x) starts at the determined current geoposition (Pos.x), and - to generate the updated escape route description (Des.2) in such a way that the updated escape route description (Des.2) describes the updated escape route (Fw.x). [6] Escape assistance order according to one of the preceding claims, characterized by , that the navigation unit (20.1, 20.z) is designed to after the step in which the controlled output unit (30, 30.1, 30.2) outputs the escape route description (Des.1, Des.2), - to re-determine the current geoposition (Pos.x) of the escape aid device (100, 100.1, 100.2) using the signal from the geoposition sensor (40, 40.1, 40.2) and - to compare the newly determined current geoposition (Pos.x) with the calculated escape route (Fw), the navigation unit (20.l, 20.z) is further designed to then, if the newly determined current geoposition (Pos.x) deviates from the calculated escape route (Fw) by more than a predetermined barrier, - to calculate an updated escape route (Fw.x), where the updated escape route (Fw.x) starts at the determined current geoposition (Pos.x), - to generate an updated escape route description (Des.2) for the updated escape route (Fw.x) and - to cause the output unit (30, 30.1, 30.2) to output the updated escape route description (Des.2) by means of appropriate control. [7] Escape assistance procedures, which is carried out using an escape assistance order, wherein the escape aid arrangement comprises an escape aid device (100, 100.1, 100.2) and a signal processing navigation unit (20.l, 20.z), where the escape aid device (100, 100.1, 100.2) - a vital signs sensor (50, 50.1, 50.2), - a geoposition sensor (40, 40.1, 40.2) and - one output unit (30, 30.1, 30.2) includes wherein the navigation unit (20.l, 20.z) has read access to a predefined area data storage (23), wherein a computer-evaluable description of the spatial area (Ar) and a computer-evaluable identifier of a predetermined safe target position (Sp) are stored in the area data storage (23), wherein the escape aid procedure is carried out while a user (B, B.1, B.2) carries the escape aid device (100, 100.1, 100.2), wherein the escape assistance procedure is triggered by the navigation unit (20.1, 20.z) receiving an alarm message (AN), wherein the received alarm message (AN) includes information about the existence of an alarm situation in a spatial area (Ar), and the escape assistance procedure includes the steps that - the vital parameter sensor (50, 50.1, 50.2) measures a vital parameter of the user (B, B.1, B.2) and generates a signal comprising information about the measured vital parameter, - the geoposition sensor (40, 40.1, 40.2) measures its own current geoposition (Pos.s) and generates a signal containing information about its measured geoposition (Pos.s), - the navigation unit (20.l, 20.z) calculates an escape route (Fw) for the user (B, B.1, B.2), where the escape route (Fw) begins at the current geoposition of the geoposition sensor (40, 40.1, 40.2) and leads to the safe target position (Sp), - the navigation unit (20.l, 20.z) generates an escape route description (Des.1, Des.2), where the escape route description (Des.1, Des.2) describes the calculated escape route (Fw) in a form perceptible to a human, - the navigation unit (20.1, 20.z) controls the output unit (30, 30.1, 30.2) and - the controlled output unit (30, 30.1, 30.2) the generated Outputs escape route description (Des.1, Des.2), where the navigation unit (20.l, 20.z) is used for the step of calculating the escape route (Fw), - the signal from the geoposition sensor (40, 40.1, 40.2), - the stored description of the spatial area (Ar) and - the stored identifier of the safe target position (Sp) is used, wherein the navigation unit (20.l, 20.z) is designed to generate two different possible escape route descriptions (Des.1, Des.2) for the calculated escape route (Fw), and where the navigation unit (20.l, 20.z) - depending on the signal from the vital parameter sensor (50, 50.1, 50.2) classifies the current state of the user (B, B.1, B.2) and - depending on the classified state of the user (B, B.1, B.2) one of the possible escape route descriptions (Des.1, Des.2) is generated as the escape route description. [8] Escape assistance procedure according to claim 7, characterized by , that after the step in which the controlled output unit (30, 30.1, 30.2) outputs the escape route description (Des.1, Des.2), Additionally, the following steps must be taken to ensure that the navigation unit (20.1, 20.z) - depending on the signal from the vital parameter sensor (50, 50.1, 50.2), the current state of the user (B, B.1, B.2) is reclassified, - depending on the result of the reclassification, an updated escape route description (Des.2) is generated and - through appropriate control, the output unit (30, 30.1, 30.2) outputs the updated escape route description (Des.2). [9] Escape assistance procedure according to claim 8, characterized by , that the step that the navigation unit generates the updated escape route description (Des.2), the steps include the navigation unit (20.l, 20.z) - the current geoposition (Pos.x) of the escape aid device (100, 100.1, 100.2) was determined again, for which the navigation unit (20.l, 20.z) uses the signal from the geoposition sensor (40, 40.1, 40.2), and - calculated an updated escape route (Fw.x), wherein the updated escape route (Fw.x) begins at the determined current geoposition (Pos.x), and wherein the navigation unit (20.l, 20.z) generates the updated escape route description (Des.2) such that the updated escape route description (Des.2) describes the updated escape route (Fw.x).

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