BE1022452B1 - SYSTEM FOR MONITORING INDEPENDENT RESPIRATORY PROTECTION - Google Patents

Abstract

The invention relates to a system suitable for monitoring independent respiratory protection of a user of a pressure container, comprising: (1) an independent respiratory protection; (2) at least two communication units between which, on the one hand, information about at least the instantaneous gas pressure in the pressure container and, on the other hand, information about the course of intervention is exchanged; (3) a computer for executing a computer-implemented monitoring program (4), which is not worn by the wearer of the independent respiratory protection device; and (4) a computer-implemented monitoring program.

Description

SYSTEM FOR MONITORING INDEPENDENT AEMA PROTECTION

preface

This invention relates to a system for monitoring independent respiratory protection, to a computer-implemented monitoring program used in combination with said system and to a method for monitoring independent respiratory protection, in particular for use by firefighters.

BACKGROUND OF THE INVENTION

Increasingly, firefighters are faced with situations that require wearing independent respiratory protection. We are thinking, among other things, of: (a) an increasing number of fires that require so-called indoor fire fighting. Ever better insulated homes play a major role in this: when a fire starts in such a home, it develops much slower than in the past because increasing attention to fire prevention and adapted building methods greatly reduces the expansion possibilities and the chance of development of such an indoor fire. Where in the past a house was lit even before the arrival of the fire brigade, nowadays firefighters have to penetrate the building more and more to be able to fight the fire and / or carry out rescues. (b) an increasing number of incidents with hazardous substances, in which harmful gases or vapors can enter the body through breathing. Not only the exponentially increasing use of hazardous substances in industry, but also an increasingly frequent occurrence of hazardous transport on public roads, contribute to this. (c) the growing awareness, within the fire brigade, of the extremely harmful effect of flue gases on health, whether acute or chronic.

In short, firefighters must increasingly protect themselves against the risks to which they are exposed. The wearing of independent respiratory protection, in particular the wearing of a compressed air bottle (i.e. a pressure container) on the back in combination with, for example, a full face mask, is an absolute priority.

The independent respiratory protection generally comprises (a) a harness comprising carrying straps for carrying a pressure container; (b) a pressure container which is preferably suitable for compressed air and which, for example for use by firefighters, is filled to usually around 300 bar (ie brought to an initial pressure 300 times greater than the atmospheric ambient pressure), or which , for use by divers, is filled to usually about 200 bar (ie is brought to an initial pressure 200 times greater than the ambient atmospheric pressure), (c) a means for taking air, for example a full face mask, a mouthpiece and / or a pressure pack, coupled to the pressure container by means of one or more air hoses and a pressure regulator, whereby the means for taking air can be supplied with air at the moment that the compressed air carrier thereof needs this air, in particular when inhale by the compressed air carrier; eri (d) a pressure sensor, in particular a pressure gauge, in particular a readable pressure gauge, on which the compressed air carrier can read and monitor the gas pressure in the pressure container.

When firefighters proceed to deploy independent respiratory protection, this is done in the following way, which is taught in the context of the mandatory firefighter training, which in Belgium meets federal standards. The deployment is always done by a team of three firefighters, with two firefighters from the said team (the compressed air carriers), provided with independent respiratory protection, entering the place (ie building, factory hall, apartment, house, shed, container, etc.) where a fire must be fought, a rescue must be made or another action must be carried out under independent respiratory protection, and whereby the third firefighter of said team (the guard) is radiophonic, ie via a wireless oral radio connection, from outside the action area, for example a building, accident area, industrial site, etc. that has been entered by the two compressed air carriers, is in contact with said two compressed air carriers and whereby verbal information: between said two compressed air carriers and the third firefighter can be exchanged, for example concerning the (remaining, immediate) pressure in the pressure container, the total residence time of the two compressed air carriers at the place of deployment, the remaining residence time at the place of deployment, etc. The guard can determine how long both compressed air carriers can remain at the place of deployment, without risking a lack of air. [Said information can be calculated by the guard on the basis of the known initial air pressure in the pressure container and the instantaneous air pressure in the pressure container for. each of the two compressed air carriers which is periodically transmitted by each of the two compressed air carriers to the third firefighter during deployment. To the extent that this calculation already occurs, this calculation is currently done by hand by the third firefighter and is a fairly rough estimate.

A telemetric system is known in the trade from Dräger (Dräger Sa-fety Belgium SA, Wemmei, Belgium), called DrägerMan PSS® Merlin, to be used in combination with an electronic manometer (for example Bodyguard from Dräger) where information about, for example, instantaneous gas pressure in the pressure holder of a fireman, equipped with an independent respirator, his air consumption, temperature at his radio and a predicted time until reserve pressure is calculated by the electronic manometer and periodically (for example every 20 seconds) hair transmitted wirelessly and displayed on an information board that is visibly placed outside the place of deployment. Such an information board can monitor the deployment of 12 firemen at the same time. Furthermore, said prior art system can also display an auditory and / or visual alarm signal given by the firefighter if it should be in trouble, and with the aid of the system a signal can be given to the firefighter to withdraw from the place of deployment.

The state-of-the-art system is provided to furthermore be able to read the data displayed on the information board via a separately obtainable software on a separate information carrier (such as, for example, a laptop, desktop computer, ...). However, this read-out does not in any way contain information that was passed on to the guard by the carriers of the pressure container itself (for example via the verbally conducted radio communication).

The prior art system has the disadvantage that it does not indicate an actual "time to return", but only a time until the moment when the pressure container carried by the firefighter becomes empty. However, at that time a return to common practice situations may already be too late. The state-of-the-art system therefore in no way takes into account where the fireman is at that moment, how he has been hit there, how long he has taken it, and therefore cannot actively guarantee the safety of the entire guarantee action in its entirety.

Such a system further has the disadvantage that the information processed and given by such a system is limited. Moreover, the purchase cost of. the system is so high that in practice it is only available for larger (and wealthy) fire brigades. Finally, the system is quite extensive and its storage in a fire truck requires a lot of space, which is often not there. Also, wearing a radio inherent in the system means an additional load for the deployed firefighter, which adversely affects his mobility, and therefore his safety. Finally, such a system can only be used with an electronic manometer, and not with the much cheaper manometer with dial, because the calculation for, among other things, time-to-return is not done by the information board, i.e. outside the place of deployment.

Detailed description of the invention

It is the object of the invention to provide a simple, multi-deployable, versatile and inexpensive system for monitoring independent respiratory protection, in particular to firefighters, thereby facilitating their deployment and at least ensuring and preferably increasing their safety, compared to current practice.

The system for monitoring independent respiratory protection according to the invention dynamically calculates the time-to-return, enabling safer deployment of firefighters, and this for each specific situation in the most relevant way.

With the aid of the system for monitoring independent respiratory protection according to the invention, all aspects are monitored semi-automatically which guarantee the well-being of firefighters during an intervention process, or which may just endanger them. The system for monitoring independent respiratory protection according to the invention calculates each output fully automatically. In one embodiment, the system requires the manual input of information obtained from a radiophonic oral communication between the first and second firefighter. In another embodiment, the system requires the wireless input of information obtained from the wireless communication between the pressure sensor carried by the compressed air carrier and the computer, coupled to or equipped with a receiver for receiving the wireless information from the pressure sensor.

To this end, the system for monitoring independent respiratory protection of a user of a pressure container according to the invention comprises the following components: (1) an independent respiratory protection comprising at least one support set, a pressure container, a pressure regulator, one or more pressure lances, a means for taking air, and a pressure sensor. (2) at least two communication units between which on the one hand information about at least the instantaneous gas pressure in the pressure container and on the other hand information about the course of intervention, such as the path followed, and deployment events are exchanged; (3) a computer for executing a computer-implemented monitoring program (4) that is not carried by the wearer of the independent respiratory protection; and (4) a computer-implemented monitoring program that is provided with information about at least the filling pressure and the physical volume of the pressure container, the instantaneous gas pressure in the pressure container and the passage of time and that at least the time-to-return on a dynamic calculated.

The operation of the system will now be described in detail with reference to the use of compressed air as gas in the pressure container, and by firefighters. However, it should be noted that the use of independent respiratory protection is not limited to firefighters, but can also be used in situations other than a fire caused by, for example, underwater divers and gas suit carriers, for example in industrial environments such as spray booths, during maintenance and cleaning from chemical storage vessels, or in spaces with limited airflow, excess dust, harmful chemicals, and the like. The scope of this invention is thus not limited to the use by firefighters, but relates to anyone who uses said independent respiratory protection for a particular application.

The independent respiratory protection comprises at least a support set, a pressure container, a pressure regulator, one or more pressure hoses, a means for taking air, and a pressure sensor.

Wearing a compressed air device is also referred to as wearing independent respiratory protection because the breathing of the compressed air carrier remains completely separate from the ambient air that surrounds it. After all, the pre-filled pressure container contains a limited amount of compressed air (compressed air), which the wearer uses up systematically and autonomously as he breathes.

A compressed air device, such as that used by the fire brigade, is at least composed of the following components: • a support set comprising a support frame with support belts; • a pressure container with valve, filled with breathing air; • a pressure regulator with pressure relief valve (reduces the high pressure to medium pressure); • a flexible medium pressure hose with a lung machine; t • an additional flexible medium pressure hose with a quick coupling; A high-pressure hose with a pressure sensor comprising an alarm device; A means for extracting air, i.e. a face piece.

The support set, the pressure regulator, the hoses with pressure sensor and the lung automaton can be considered as an integrated whole that can be used with a smooth face piece. The manufacturer has designed such an assembly as a whole according to NBN-EN 137. The assembly is therefore tested as a whole for the type test.

In connection with the special circumstances under which the fire brigade must operate, a number of requirements are imposed on the compressed air device in EN 137, including: • there must be an alarm device on the device that indicates with a warning signal that the reserve pressure has been reached. The alarm device may be in the form of an acoustic signal (whistle) or a breath-resistance signal. At the fire department, the devices are usually equipped with a whistle; • the device must be equipped with a pressure sensor, for example a manometer, which is clearly legible for the wearer; the pressure sensor can be analog, (with a face) or digitally designed. • the carrying weight of a usable device, with face piece and full pressure holder, may not exceed 18 kg; • when using a full-face mask, an overpressure must be present with an inhalation of 300 l / min; • with exhalation, the overpressure may not exceed 10 mbar. The static overpressure must be at least 3 mbar. In practice, an overpressure of 3.5 mbar is optimal; • the valve of the pressure container must be positioned in such a way that the wearer of the device can operate it independently.

The operating principle of the compressed air device is as follows: the pressure vessel of the device consists of composite material and is usually filled by the fire brigade to a pressure of approximately 300 bar (for example, a pressure vessel with a volume of 6.8 liters, which is filled to a pressure of 300 bar, about 2040 liters of air). This is done prior to use and with the help of a compressor. The pressure container has a valve and is attached to the support frame with the aid of a screw coupling. The screw coupling connects pressure holder and support plate via a so-called pressure regulator. This is intended to reduce the filling pressure of 300 bar (high pressure) for further distribution to a so-called intermediate pressure of 6 to 9 bar. For safety's sake, an overpressure valve ensures that the air is blown off if an error occurs during the reduction and the air is under threat of being passed on to more than 9 bar to the medium pressure hose (and therefore the user). Just before the pressure reduction, a high-pressure hose diverts part of the compressed air to a pressure sensor, for example a manometer. On the latter one can always read how much pressure is still present in the pressure container, or in other words, how much air the pressure container still contains.

Once reduced to a pressure of 6 to 9 bar, a medium pressure hose distributes the compressed air to the lung machine. The lung dispenser in turn reduces the medium pressure to a pressure of 1.005 to 1.010 bar. When, on the lung machine, the air extraction means, for example a face piece, is then coupled, the compressed air carrier is assured of an overpressure of 5 to 10 mbar inside the face piece. This assures him that, in the event that the face piece should leak, air can only escape from the inside of the face piece to the outside, and excludes that (possibly harmful) ambient air could penetrate the face piece.

The lung machine is equipped with a calibrated spring inside, which with a back pressure of 5 to 10 mbar ensures that air is only released when the compressed air carrier inhales. After all, the spring is then taken out of its zero position due to the underpressure created by inhalation. With a compressed air device, air from the pressure container is therefore only used when the compressed air carrier inhales. The exhaled air is expelled from the mask during each exhalation via a so-called exhalation valve (one-way valve), and is therefore not recovered.

Examples of a suitable independent respiratory protection according to the invention are Dräger PA 94 and Drager PSS 7000 (Drager Safety Belgium S.A., Wemmel, Belgium).

It should be noted that the system is not limited to the use of air (compressed air), but that other gas mixtures can also be used. When reference is made in this application to a compressed air carrier, reference is generally also made to a carrier of a pressure container, insofar as this pressure container contains a compressed gas.

The independent respiratory protection comprises at least two communication units with which on the one hand information about at least the instantaneous gas pressure in the pressure container and on the other hand information about the course of intervention, such as the path followed, and deployment events are communicated.

Emergency and security services must be able to communicate with each other at any time, in a reliable and safe manner. To this end, the ASTRID digital radio network is made available in Belgium, specifically tailored to the needs of everyone active in public safety.

Digital radio communication via the ASTRID network is fast, reliable and has optimum sound quality. Moreover, ASTRID offers radio coverage throughout Belgium. ASTRID stands for Ail-round Semi-cellular Trunking Radio System with Integrated Dispatching.

Ail-round means that the radio communication provided is multifunctional and nationwide.

Semi-Celluiar means that each base station provides radio coverage for a specific geographical area (cell).

For its data transmission, radio communication uses the Trunking technique: radio users are allocated capacity when they need it. Frequencies are therefore never reserved for one specific user. ASTRID uses the 380 MHz - 400 MHz frequency band that is specially reserved in Europe for the emergency and security services.

Finally, the Integrated Dispatching stands for the support event of the control room. However, this matter falls outside the scope of the actual radio communication in itself.

The radio network is based on the TETRA standard. This is a European open standard for mobile digital telecommunications for emergency and security services. It is elaborated and maintained by the European Télécommunications Standard Institute (ETSI) and is implemented in technologies as provided by radio manufacturers such as Motorola, Siemens, EADS, ... ASTRID radio communication runs within pre-programmed discussion groups. In this way an organization has its own network within the common, national network. When forwarding speech and data, the user can count on maximum confidentiality, thanks to digital, encrypted communication. At the same time, however, there is the possibility of mixed

Form with other services. Each user can therefore, depending on his responsibilities, be part of different discussion groups within his own organization or with other services.

When switching on an ASTRID radio, the user must therefore be aware of the conversation group to which the radio is currently set. In the usual working mode, one can only communicate with other radios if they are set to the same call group.

A conversation group is therefore a collection of radios that can communicate with each other by pressing and sending the send button in turn.

The frequency over which the data is transmitted is, as mentioned above, variable and is managed by the network.

Changing the selected conversation group is done by entering the menu of the radio, and requires no more than a few pushes on the button.

From a technical chronological point of view, radio communication between different ASTRÎD radios (on the same call group) proceeds as follows: 1- Person A chooses a call group (he can only choose from those call groups for which the network administrator has granted him membership). 2- Person A presses the send key (also called PTT or 'Push to Talk'). 3- The radio of person A sends a request to the nearest base station (over the so-called control channel, which is automatically determined by the network administrator without his intervention or knowledge). 4- The base station receives the request signal and passes it on to a provincial data switch (by wire). 5- The provincial switch checks which other radios are set on the same call group, and under which base stations they are located. 6- The provincial switch controls which frequency channels are available for voice transmission. v 7- The provincial switch controls the base station to assign this free frequency channel to the person A. radio. 8- A few milliseconds after person A pressed the send button, the radio control light turns green. Person A can now send his message. 9- The base station distributes the message both locally (to the radios that are within its coverage area on the same call group) and to the provincial switch (which distributes the message to the other base stations, and thus also to all other radios on those group). 10- All persons whose radio is set to the same conversation group (as that of person A) receive the message.

The communication with an ASTRID radio is therefore simplex. During the time that the sender transmits, the receiver can only receive. Only after the sender has finished sending can the receiver answer by pressing the send button.

The two communication units between which information is exchanged are preferably included in the ASTRID network.

However, the invention is not limited to communication units between which information is exchanged that are included in the ASTRID network. The information can also be exchanged via walki-talkis, GSMs, satellite telephones, and the like. (3) A computer for executing a computer-implemented monitoring program according to the invention is preferably a portable computer, laptop, notebook, ultrabook, PDA, smartphone, Blackberry or any computer suitable for that purpose. The computer is not carried by the wearer of the independent respiratory protection, but remains outside the area of action and is, for example, operated by the aforementioned third band-fighter. In particular, the computer is a computer suitable for firefighting applications for field use, for example a computer available under the name Emerec (Rosenbauer International AG, Austria). A fire brigade team that is deployed often already has the appropriate computer equipment in their fire brigade equipment, for example for consulting a database with hazardous substances. It is an advantage of the present invention that no further electronic equipment, in particular computer equipment, is required for the system for monitoring independent respiratory protection than the computer equipment already present in a standard firefighting equipment.

According to one embodiment, the computer-implemented monitoring program is present on said computer, for example a hard disk, a memory stick, a removable medium such as a DVD or CD-ROM, and the like.

According to another embodiment, the computer-implemented monitoring program is not present on said computer, but said computer is connected to a second computer provided with said computer-implemented monitoring program, for example wirelessly or via a cable, for example over the Internet . Preferably said second computer is a server included in the Internet. (4) The computer-implemented monitoring program that is provided with information about at least the instantaneous pressure in the pressure container and the time lapse (ie the time elapsed during the deployment, or while wearing the pressure container), and that at least dynamically calculates the time-to-return, monitors the safety of each carrier of a pressure container, in particular each compressed air carrier, in the following respects:

The management of the deployed time, to instantly and dynamically calculate the average air consumption of the compressed air carrier.

Determine a remaining (safe) deployment time based on average air consumption.

On the basis of the above data, indicate a remaining 'time to return' or 'time to empty pressure container'.

Based on the average air consumption, provide an assessment of whether or not the physical exertion of the compressed air carrier compromises its safety.

The time-recorded invoice entry (by the "guard"), together with each output generated by the program, bundle into an after-action report. In this connection, "third party" is referred to as "guard".

Generate both in run-time and in the after-action report, a graphical representation of the compressed air consumption, and the associated consumption over time.

Keep track of the outward journey on the basis of reference points, in order to immediately generate the expiration of the return route to be taken from this at the time of return.

With each calculation, the system checks the difference between the filling pressure (pressure in the pressure container at the start of the deployment) of the pressure container and the instantaneous (remaining) pressure in the pressure container to calculate the amount of air already used based on this of the general gas law (the product of the pressure in a pressure container and the physical volume of the pressure container is after all a measure of the amount of compressed gas, in this case air, which is located in the pressure container). The system divides this used amount of air by the elapsed deployment time (within which this amount of air was used), and in this way immediately calculates the average consumption of the compressed air carriers up to that point.

Based on this, the system simulates how long the compressed air carrier can continue its deployment under independent respiratory protection.

The way in which the system displays its output in this case always depends on the specific situation of the moment (is the compressed air carrier still on its way out, or is it already on its way back, or is it performing a stationary action for some time, etc. .). In this way, all intervention factors are taken into account when monitoring the safety of the deployed personnel.

Any influence due to heating and cooling of the compressed air, during filling (compression) and consumption (expansion) of the pressure container, is also taken into account here by including a correction factor, also known as the "filling coefficient" and is known to those skilled in the art from tables. Note that the filling coefficient in reality always depends on the instantaneous pressure. Since the filling coefficient has a range of 0.970 to 1.100, one must always have realized an error margin between -3% and + 10% with respect to the actual one. content value if this fill coefficient were not taken into account, which should always be the case with a "rough" calculation by the third fireman, but which does not always happen in practice.

Based on the filling pressure in the pressure container at the start of the deployment, the physical volume of this pressure container, the instantaneous (still remaining)

1 I pressure in the pressure container and the elapsed deployment time, the system calculates the average consumption of the compressed air carrier, and the computer-implemented monitoring program, based on this, immediately and dynamically generates how long the compressed air carrier can continue its deployment. By dynamic is thus meant that the output is adjusted frequently or continuously on the basis of each new data available during the deployment.

To link the calculation of this remaining deployment time as adequately as possible to the nature of its activity, the computer-implemented program distinguishes three possible situations: 1- The firefighter is on the way to extinguish a fire or to find a victim. 2- The fireman is on his way to a location where he will take a certain action for some time. 3- The fireman is on his way back, after carrying out and / or stopping his assignment.

In yet another embodiment according to the invention, it is possible to record the verbally conducted communication between the two communication units, for example by typing it into a program, or recording it as a voice-logging, on tape, or on any other way, crafted to the craftsman.

The invention will now be explained, by way of illustration, with an example.

Reference is herein made to a computer-implemented monitoring program called Flow Control 300®, which was designed by the inventor of this application and in which the invention was implemented. It is understood that the invention is not limited to this specific computer-implemented monitoring program, but that any variant of the computer-implemented monitoring program that meets the characteristics of the invention falls within the scope of the invention.

EXAMPLE

The following example describes a complete deployment chronologically, using the computer-implemented monitoring program. ^

Friday, August 24, 2012 - 6:23 p.m.

A car pump from the fire brigade pulls out for what would be a house fire, in which there would still be one victim. The car pump is staffed with 6 men, who know what their task will be when the procedure is ordered once the car pump is on site.

Given the nature of the call, a second car pump, with equivalent crew, will leave the barracks a little later.

The car pump arrives on site around 6:29 pm. The commanding officer observes a fierce smoke development with flame phenomena on the second floor. The rescue team (Bwm 1 and Bwm 2) is getting ready to enter the building in search of the victim. From the information obtained, the victim is said to be at the rear on the first floor. In the meantime, fireman Y is already behind the portable computer in the car pump. He starts the Flow Control 300 computer program and reports that he is available for monitoring (to the commander). In the 'registration' screen of Flow Control 300, he fills out that a team of 2 people is leaving, namely Bwm 1 and Bwm 2, with the task of rescuing a missing victim.

The rescue team (team 1) enters the building. Just before this they pass on radiophonic the filling pressure of both their compressed air bottles to the guard (fire fighter Y). The monitor enters the lowest of both fill pressures (in this case 303 bar) in the Flow Control 300 program. He also enters the physical volume of the compressed air bottle, which according to current manufacturing standards is always 6.8 liters. He confirms these two data with a few mouse clicks, and the clock starts to run. The deployment has started. It is 6:30 pm. (Figure 1)

Due to the heavy smoke development the rescue team sees; no hand in mind. In terms of procedure, the team remains unseparated, and the first man leads the way! Keeping in touch with the wall at all times. Every few meters he radiophonically passes through his full-face mask to the guard which recognizable objects he bumps into. It

! 'It's his teammate's job to memorize these items in order. After all, when they turn around afterwards, they can reconstruct their way back in a correct way! (where the chance of getting lost; getting limited to a minimum). For example, the first firefighter always indicates when they are in contact with the wall, that they take a corner (90 ° left, 180 °, 90 ° right, ...) (Figure 2) i. 1

In the following example of Flow Control 300, the intervention for the rescue team proceeds as follows: 00:01:29 - Ploeol (18: 31h)

Radiophonic communication from rescue team to guard: "To guard, rescue team, we pass 90 ° to the left."

I

The guard clicks '90 ° left' and radiophonic confirms that he has understood the message: "Roger for 90 ° left." 00:03:00 - Team 1 (18: 33h)

Radiophonic communication from rescue team to guard: "To guard, rescue team here, we are going through a door."

I

The guard enters 'door' manually and confirms radiophonically that he has understood the message correctly: "Roger for rescue team, you are going through a door." 00:03:31 - Team. 1 (18: 33h)

Radiophonic communication from rescue team to guard: "To guard, rescue team here, we have 293 bar left and are now going up a staircase."

The guard enters 293 bar, clicks 'up the stairs' and responds radiophonically: "Roger for rescue team, you have just under 58 minutes left

I go back before the start of the retreat. "(Figure 2) 00:04:36 - Team 1 (18: 34h)

Radiophonic communication from rescue team to guard: "To guard, rescue team here, we are on the first floor and hear the victim cry for help."

I

The guard enters this information as a note and responds radiophonically: "That is well understood for the rescue team, you hear the victim calling for help." (Fig. 3)

The second car pump arrives on site. An additional team is thus available. The commander decides the two firefighters

I I immediately to fight against the fire (domestic

I fire fighting); The guard initializes the monitoring of a second team, the attack team, in Flow Control 300. In the '' registration '' screen of team 2, he enters that Bwm 3 and Bwm 4 leave, with the task of tracing and controlling the firebox (an attack) (Figure 4).

Moments later the attack team reports that they are entering the building, with a starting pressure of 305 bar (the lowest of both filling pressures). It is 6:35 pm (Figure 5). '00:05:57 - Team 1 (6:35 PM)

Radiophonic communication from rescue team to guard: "To guard, here rescue team, we pass 90 ° to the right."

The guard clicks '90 ° on the right' and radiophonic confirms that he has understood the message correctly: "Roger for rescue team, you are going 90 ° on the right." 00:01:16 - Team 2 (18: 36h)

Radiophonic communication from attack team to guard: "To guard, here attack team, we pass 90 ° left."

The guard clicks '90 ° left' for team 2 and confirms radiophonically that he has understood the message: "Roger for 90 ° left." 00:06:35 - Team 1 (18: 36h)

Radiophonic communication from rescue team to guard: "To guard, here rescue team, we still have a residual pressure of 270 bar, and are now moving through a sliding door."

The guard enters a pressure of 270 bar, enters 'sliding door' and answers radiophonically: "Roger for rescue team, sliding door. For your information: you still have 30 minutes and 44 seconds to go before the start of the retreat." 00:02:44 - Team 2 (18: 37h)

Radiophonic communication from attack team to guard: "To guard, here attack team, we pass through a door."

The guard enters 'door' manually and confirms radiophonically that he has understood the message: "Roger for attack team, you go through a door." 00: 03: 14- Team 2 (18: 38h)

Radiophonic communication from attack team to guard: "To guard, here attack team, we still have 288 bar and are now going up a staircase."

The guard enters 288 bar, clicks 'up stairs' and responds radiophonically: "Roger for attack team, you still have a good 35 minutes to go before the start of the retreat." (Figure 6) 00:09:34 - Team 1 (18: 39h)

Radiophonic communication from rescue team to guard: "To guard, here rescue team, we still have a residual pressure of 255 bar left."

The guard enters a pressure of 255 bar, and responds radiophonically: "Roger for rescue team, you still have 29 minutes and 28 seconds to go before the start of the retreat." (Figure 7) 00:04:53 - Team 2 (18: 39h)

Radiophonic communication from attack team to guard: "To guard, here attack team, we pass 90 ° to the right, and then back 90 ° to the right."

The guard clicks '90 ° right' twice for team 2 and confirms radiophonically that he has understood the message: "Roger for 90 ° right twice." 00: 05: 18- Team 2 (18: 40h)

Radiophonic communication from attack team to guard: "To guard, here attack team, we go up another staircase."

The guard clicks 'up stairs' and responds radiophonically: "Roger for attack team, once again up stairs." 00:10:21 - Team 1 (6:40 PM)

Radiophonic communication from rescue team to guard: "To guard, rescue team here, we found the victim, about it."

The guard clicks on 'slapffer' and answers radiophonically: f: "Roger for rescue team, you have found the victim." 00, 10, 40 - Team 1 (6:40 PM)

Radiophonic communication from rescue team to guard: "To guard, here rescue team, we link the victim to a breathing mask and proceed to evacuate at 250 bar residual pressure, over."

The guard enters 250 bar as retreat pressure, clicks on 'secondary compressed air collection', and responds radiophonically: "Roger for rescue team, you breathe the victim and you return it at 250 bar. For your information: you have a little less than 25 minutes before the return trip, which should be more than sufficient. " (Figures 8 and 9)

In Flow Control 300: you can now see, at a single glance, that the retreat was started well in time (green triangle in graph + green check mark on the countdown clock). Also, a 'PL2' symbol on the consumption curve, and a compressed air deduplication icon in the surveillance field, indicate that the victim was linked to the fireman's compressed air. Based on the manufacturing data of the breathing mask, Flow Control 300 now initially assumes a continuous flow of 40 l / miri

J consumption. A. the next calculation will be able to show the total consumption (compressed air carrier + continuous flow to the victim) more precisely. 00:06; 11 - Team 2 (18: 41h)

Radiophonic communication from attack team to guard: "To guard, here attack team, we go through a door and have 247 bar residual pressure left."

The security guard enters 'door' manually, enters a residual pressure of 247 bar and responds radiophonically: "Roger for attack team, you go through a door at 247 bar residual pressure. For your information: you have less than 15 minutes to go before the start of the return trip " (Figure 10) 00:07:43 - Team 2 (18: 42h)

Radiophonic communication from attack team to guard: "To guard, here attack team, we have found the seat of the fire. This is located in the insulation. We will have to remove the wall for some time to control the seat of the fire. Residual pressure 243 bar, left over. " The guard clicks on 'Firebox found' and enters a residual pressure of 243 bar. He does this by setting an action point. After all, the attack team will no longer progress, but will remain stationary. (Figure 11)

The guard finally answers radiophonically: "Roger for attack team, found 243 bar and firebox. For your information: you still have 31 minutes and 38 seconds to go before the start of the retreat." (Figure 12)

For the sake of completeness, the security guard also informs the nature of the firebox as a note (Figure 14) 00:12:53 - Team 1 (18: 42h)

Around the 13th minute one suddenly hears a loud bang inside the building. The guard immediately checks whether the rescue team is doing well. "To rescue team, here guard, we just heard a loud bang. Are you okay about it?"

The guard receives no response. He tries again. In the meantime he enters the bang as a bill ... (Figure 14) "To rescue team, here guard, come in, over." "Guard with priority to rescue team, are you telling me, well, about it?"

The guard still receives no response and sounds the alarm. He clicks on "No response ...". All essential data in Flow Control 300 colors gray. No other manipulations can be made and an alarm tone sounds. (Figure 15) 00.13: 48 - Team 1 (18: 43h)

The guard hears radiophonically: "To the guard, here rescue team, we are doing well. I repeat, we are doing well. The bang was about a propane container that exploded under the heat, albeit without consequences."

The guard confirms that he has understood the message correctly, and cancels the alarm by clicking on 'Reaction'. (Figure 16) 00:17:13 - Team 1 (18: 47h)

Radiophonic communication from rescue team to guard: "To guard, here rescue team, we are currently under the stairs, on the ground floor. We are uncertain about the way to follow, can you guide us, about it?"

The guard watches the simulated way back, and answers radiophonically: "To the rescue team, here guard, you find a door at the bottom of the stairs. You go through this, after which you have to take 90 ° to the right to reach the exit of the building. Is well understood, about? "

Radio communication from rescue team to guard: "Roger, that's well understood. Thank you." 00: 18; 56 - Team 1 (18: 48h)

Rescue team and victim reach the exit of the building. The victim is transferred to the medical emergency services.

The guard clicks on 'End of bet'. Flow Control 300 closes team 1 monitoring and displays a generated After Action Report (Figure 20A and B). 00; 27; 15 - Team 2 (19: 02h)

Assuming that Team 2 will need just that time for the return trip as elapsed during the journey, it has apparently already exceeded the absolute time of return (countdown clock turns red and an imminent signal tone is heard). However, with the establishment of an action point, the guard can make a well-considered decision to allow the attack team to work a little longer. Given the attack team after about 7 minutes and 49 seconds. remained stationary, the guard may assume that they will only need a little less than 8 minutes for their return trip. The attack team can thus remain stationary for a good 12 minutes. Only then their compressed air bottle is 7 minutes and 49 seconds. removed from being empty (Figure 17). / 00:36:44 - Team 2 (19: 11h)

When the time ticks down to less than five minutes before the absolute moment of return, Flow Control 300 will display it flashing yellow. A corresponding signal tone starts. In this way the guard knows that it is best to call the attacking team back for safety (Figure 18).

Radiophonic communication from guard to attack team:

To attack team, here guard, you must return. I repeat, return, over. "

Radiophonic communication from attack team to guard: "Roger for guard, we return. For information: firebox just under control, over."

The guard introduces as a note that the seat of the fire has been brought under control, and responds radiophonically: "Well understood for the attack team, the seat of fire under control." (Figure 19)

A few minutes later, the attack team also reaches the exit of the building safely.

The guard clicks on 'End of bet'. Flow Control 300 closes the monitoring of team 2, and displays a generated After Action Report. \

Claims (11)

Conclusions A system suitable for monitoring independent breathing (protection of a user of a pressure container, comprising: (1) an independent respiratory protection comprising at least a support set, a pressure container, a pressure controller, one or more pressure hoses, a means (2) at least two communication units between which on the one hand information about at least the instantaneous gas pressure in the pressure container and on the other hand information about the course of intervention, such as the route followed and deployment events, are exchanged. (3) a computer for carrying out a computer-implemented monitoring program (4), which is not carried by the wearer of the independent respiratory protection, and (4) a computer-implemented monitoring program that is provided with information about at least least the filling pressure and the physical volume of the pressure container, the instantaneous gas pressure in the pressure container and the time course and that at least least time-to-return in a dynamic way. 2. System as claimed in claim 1, wherein the pressure container is suitable for (compressed) air. A system according to claim 1 or 2, wherein the means for taking air is a full face mask, a breath piece or a pressure suit. The system of claims 1 to 3, wherein the two communication units between which information is exchanged are included in the ASTRID network. The system of claims 1 to 4, wherein the computer for executing a computer-implemented monitoring program is a portable computer. The system of claim 1 to 5, wherein said computer-implemented monitoring program is present on said computer. A system according to claims 1 to 5, wherein said computer-implemented monitoring program is present on a server included in the Internet, which is connected to said computer. Use of the system according to any of claims 1 to 7 by a firefighter. 9. Computer-implemented monitoring program suitable for monitoring independent respiratory protection, including a step of calculating a time-to-return based on at least the instantaneous gas pressure in the pressure container and the time course. 10. A computer-implemented method comprising the one-time input of the filling pressure and the physical volume of a pressure container, the continuous receipt of information about the instantaneous gas pressure in the pressure container and the passage of time, and the continuous calculation of the time-to-return of a user of a pressure container in the context of monitoring independent respiratory protection. A computer comprising a memory and a processor, the processor performing the computer-implemented method according to claim 10.