EP1077742A1 - Systeme de surveillance de porteurs de masques a gaz - Google Patents

Systeme de surveillance de porteurs de masques a gaz

Info

Publication number
EP1077742A1
EP1077742A1 EP99920686A EP99920686A EP1077742A1 EP 1077742 A1 EP1077742 A1 EP 1077742A1 EP 99920686 A EP99920686 A EP 99920686A EP 99920686 A EP99920686 A EP 99920686A EP 1077742 A1 EP1077742 A1 EP 1077742A1
Authority
EP
European Patent Office
Prior art keywords
status data
monitoring system
base station
handset
breathing apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99920686A
Other languages
German (de)
English (en)
Other versions
EP1077742B1 (fr
EP1077742B2 (fr
Inventor
Sven Feld
Christian Giudici
Thorsten Kiesewalter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scott Technologies Inc
Original Assignee
Deutsche Telekom AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Deutsche Telekom AG filed Critical Deutsche Telekom AG
Publication of EP1077742A1 publication Critical patent/EP1077742A1/fr
Publication of EP1077742B1 publication Critical patent/EP1077742B1/fr
Application granted granted Critical
Publication of EP1077742B2 publication Critical patent/EP1077742B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/006—Indicators or warning devices, e.g. of low pressure, contamination

Definitions

  • the invention relates to a monitoring system for
  • the fire brigade uses self-contained breathing apparatus, so-called compressed air breathing apparatus. Using these devices, the firefighters can still work in completely smoke-free rooms. The necessary breathing air is carried on the back in one or two steel or composite bottles.
  • the operating pressure of these bottles is 200 or 300 bar depending on the design with a bottle content of 4 or 6 liters of compressed air.
  • a PA94 + SCBA from Dräger with two 4 1, 200 bar steel bottles is used.
  • the air supply here is 1600 1, which is sufficient for a period of around 20 minutes for medium-duty work.
  • the deployment time of the emergency personnel operating exclusively as a squad is monitored by a fireman who notes the time when the deployment begins. If there is no response from a squad after a certain time, you can intervene and initiate rescue measures.
  • this manual procedure involves some risks, since the supervising firefighter has to determine the remaining operating time for all operational personnel, which can fluctuate due to different starting times. Beyond that it is
  • REPLACEMENT SHEET (REG ⁇ L 26) It is difficult to find a fireman in need if he can no longer trigger an alarm.
  • the monitoring device has one
  • Timepiece that can be triggered by the person to be monitored.
  • An alarm device implemented in the monitoring device is activated when a preset time period has elapsed after the time measuring device has been triggered.
  • a similar microprocessor-controlled monitoring system for time-limited activities is known from DE 296 20 650, which additionally has a display by means of which all parameters are visualized.
  • the security of people to be monitored can be increased by using such monitoring devices compared to a purely manual monitoring person.
  • the people to be monitored are not themselves connected to the monitoring device and cannot be informed in good time about the current time.
  • the invention is therefore based on the object of providing a monitoring system, a mobile part and a base station, with which it is possible to monitor and protect people wearing respiratory protective devices better than before during use and in particular in an emergency.
  • a key concept of the invention is to create an essentially automatically operating monitoring system that is suitable for every respirator wearer
  • the monitoring system has at least one mobile part that can be connected to a compressed air breathing apparatus that can be attached, for example, to the back of a wearer.
  • the handset is assigned at least one sensor for detecting predetermined status data, in particular status data of the compressed air breathing apparatus.
  • a base station is also provided which can communicate with the handset of each respirator wearer via a wireless connection.
  • the base station is advantageously designed as a mobile device which the surveillance person can take with him to any location.
  • the mobile part has a radio transmission device.
  • the base station contains a radio receiving device for receiving the status data transmitted by the mobile part.
  • the handset and the base station each contain a warning and / or alarm device, which generate optical and / or acoustic signals as a function of the detected status data.
  • the warning and / or alarm device can be, for example, loudspeakers and light-emitting diodes, which can be controlled accordingly.
  • a pressure sensor for detecting the pressure of the compressed air cylinders of the compressed air breathing apparatus can be connected to the handset.
  • Such an emergency call function can be triggered, for example, by pulling off a handle attached to the shoulder strap of the compressed air breathing apparatus.
  • the warning and / or alarm device is activated as soon as the respective sensors have detected a falling below or exceeding a predetermined threshold value.
  • an adjustable time measuring device is provided for measuring the time that has elapsed since the time measuring device was triggered.
  • the time remaining for the respirator wearer in question can also be determined by means of the time measuring device and a central control unit and communicated to the wearer of the respirator.
  • the central control unit is connected to each sensor, the time measuring device and the warning and / or alarm device and takes over the control and monitoring of the handset.
  • SCBA remaining air volume by measuring the pressure in the compressed air bottle using a manometer, which must be read on the manometer at regular intervals from the wearer of the breathing apparatus.
  • Speech output device which, in response to the detected status data, can transmit predetermined messages, in particular the pressure, the temperature, and warning and alarm messages, in speech form to the wearer of the respiratory protective device at predetermined time intervals.
  • the handset expediently has one for this purpose Interface for wired and wireless connection of an earphone or a headphone implemented in the helmet of the respirator wearer to the speech output device.
  • the central control unit of the handset is designed to transmit a message for registering or deregistering the respective handset at the base station so that the respirator wearers currently in use can be monitored.
  • a display device is implemented in the base station, which can display the status data of all registered handsets.
  • a memory for temporarily storing the recorded status data and an interface for connecting an external computer to which the stored status data can be output are provided in the mobile part. To ensure that the recorded status data is interference-free
  • analogue / digital converters are initially assigned to each sensor, which convert the analogue measured variables into digital data.
  • the digitized status data are then fed to a coder which transmits the digital data to be transmitted
  • State data for example, converted into a frequency-doubled bi-phase M format.
  • a correspondingly designed decoder is provided in the base station for decoding the received coded status data.
  • the power supply to the handset and the base station takes place, for example, each via NiCd batteries, which are attached to the back of the respective device using Velcro can be attached.
  • control unit In order to avoid that the voice output device is activated unnecessarily often and thus the energy consumption of the handset is increased, the control unit is designed such that it compares the current pressure with the last measured pressure of the compressed air cylinder of the compressed air breathing apparatus and only activates the voice output device when the pressure difference has exceeded a predetermined value.
  • the object of the invention is also achieved by the features of claim 16.
  • a mobile monitoring device for attachment to a breathing apparatus of a monitoring system.
  • the mobile monitoring device has a central control device which is equipped with at least one
  • Sensor for detecting predetermined status data, in particular status data of a compressed air breathing apparatus can be connected. Furthermore, a radio transmission device for wireless transmission of the detected status data to a base station and a warning and / or alarm device are provided which generate optical and / or acoustic signals as a function of the detected status data.
  • the mobile monitoring device comprises a control device to which a pressure sensor, a temperature sensor, a motion sensor, a sensor for detecting an emergency call function triggered by the respirator wearer and / or an adjustable time measuring device can be connected.
  • the mobile transmission device there is an interface for wired or wireless connection of headphones to the voice output device and an interface for connection of an external computer intended.
  • the base station has a radio receiving device for receiving the status data transmitted by a handset attached to a compressed air breathing apparatus, a warning and / or alarm device which generates optical and / or acoustic signals as a function of the received status data, and one
  • Display device for displaying the status data of each handset registered at the base station.
  • vital data can be transmitted from several respirator wearers and system status data via a radio link to a base station and, depending on this, alarm messages can be triggered both by the surveillance person and by the respirator wearer. It is advantageous here that rescue measures can be initiated much earlier and that human errors have largely been eliminated since the data is continuously exchanged.
  • Fig. 1 shows schematically a monitoring system with a
  • Fig. 2 shows the principle of bi-phase M modulation
  • Fig. 3 shows the block diagram of a mobile part
  • Fig. 4 shows the block diagram of a base station.
  • the monitoring system according to FIG. 1 essentially comprises one assigned to a monitoring person Base station 20 and, for example, four mobile parts 21, which can communicate with base station 20 via a wireless connection, in particular via a radio channel.
  • Each handset 21 is arranged on a breathing apparatus 22, which can be strapped onto the back of a respirator wearer.
  • the handset 21 and base station 20 of the surveillance system are described in detail below.
  • FIG. 3 shows the schematic structure of one of the four mobile parts 21 as a block diagram.
  • the handset 21 includes, among other things, the following components: a central control unit 30, here a so-called microcontroller with a built-in real-time clock, a memory 100, an interface 75 for switching on headphones 80 and an interface 77 for switching on an external personal computer, for example.
  • a pressure sensor 42, a temperature sensor 48, a movement sensor 44 and a sensor 46 for detecting the triggering of an emergency call device by the wearer of the breathing apparatus as monitoring sensors are connected to the central control unit 30.
  • a digital voice output device 70 predetermined announcement texts can be output to the wearer of the breathing apparatus as normal voice via the switched on headphones 80.
  • the system states detected by sensors 42, 44, 46 and 48 and supplied to microcontroller 30 can be transmitted via a UHF transmitter 60 and via a transmission antenna 62
  • a voltage source 105 supplies the handset 21 with the required voltage.
  • the Voltage source 105 designed as an accumulator can be attached to the outside of the housing of mobile part 21. Since the pressure sensor 42 requires a different voltage than the other components, it is supplied with the required DC voltage via a DC voltage converter 107.
  • the mobile part 21 is attached to a compressed air breathing apparatus 22 and is electrically connected to the external sensors 42, 44, 46 and 48 by means of connecting cables.
  • a connecting line is, for example, laid over the left shoulder strap to the wearer's chest level and connected there to an emergency call device, while a further line leads to the headphones 80. Since haste is usually required when using SCBA 22, special emphasis was placed on making operation as easy as possible. The sequence of the whole process is automated to such an extent that no operating steps by the wearer are necessary.
  • the power supply is designed so that the batteries 105 are always kept in the full state in the idle state. For this purpose, the accumulators 105 with one
  • the handset 21 itself is not active.
  • the voltage source 105 is automatically disconnected from the charger and the handset 21 is activated. However, it now remains in the idle state until the SCBA 22 is turned on.
  • the central control unit 30 of the handset 21 now recognizes that the pressure at the sensor 42 for a 200 bar compressed air bottle has risen to over 180 bar or to over 270 bar for a 300 bar compressed air bottle (minimum pressure that is present at the start of use) must), it reports acoustically, for example via the voice output device 70 and the headphones 70 to the wearer of the breathing apparatus, the operational readiness of the unit: "Your device is ready for use.” Immediately afterwards, the central control unit 30 sends a data telegram to the base station 20 via the radio transmitter 60 and the antenna 62, with which the mobile part 21 is registered as active. The announcement of the current pressure of the compressed air breathing apparatus 22 and the transmission of the current pressure values to the base station 20 follow, for example, via the voice output device 70.
  • a time measuring device 90 now also starts. From now on, the pressure of the compressed air breathing apparatus 22 assigned to the mobile part 21 is measured every 15 seconds. However, in order not to play back the announcement of the current pressure unnecessarily often, the central control unit 30 first compares the current pressure with the last measured
  • a memory 100 Only when the comparison shows that the pressure has dropped by 10 bar or more is the new pressure value transmitted to the respirator wearer via the voice output device 70 and the headphones 80 and transmitted to the base station 20. Otherwise, the value is only stored in the memory 100, which can be an EEPROM, in the handset 21 and / or in the base station 20, in order to be evaluated later, for example, in a personal computer connected to the handset 21 via the interface 77.
  • the memory 100 has a size of 256 bytes, for example, which is sufficient for recording the pressure values up to an operating time of approximately one hour. If the operating time exceeds this value, which is not to be expected, the oldest pressure values are deleted so that the values of the last hour are always available (roll memory).
  • the pressure is not announced to the exact measured value in bar, although the measurement of the pressure sensor 42 allows this, but it is rounded down to values of 5 or 10. Of course, the exact measured values are always transmitted to the base station 20.
  • the measuring cycle is repeated, for example, every 15 seconds until the pressure of the compressed air breathing apparatus 22 has dropped below 60 bar or the emergency call device is triggered by the respirator wearer. If the first case occurs, then in addition to the remaining time / pressure announcement there is also the
  • Voice warning "Immediately withdraw”. If the wearer triggers the emergency call device before the pressure of the compressed air breathing apparatus 22 has dropped below the threshold value, an acoustic confirmation is first given via the voice output device 70 "Your emergency call is being made”. This process can then no longer be carried out
  • the control unit 30 of the handset 21 then sends a double data telegram with the emergency call to the base station 20 and activates an acoustic and / or optical signal generator 10 which activates the
  • the measuring cycle is then continued, i.e. at intervals of 15 seconds, the pressure is checked and, if necessary, announced and transmitted to the base station 20. Pressing the emergency call device again does not result in any further transmission.
  • Another safety device 44 is a motion sensor 44, also known as a "dead man's switch", which reacts to the motionlessness of the respirator wearer.
  • This motion sensor 44 can be installed additionally or alone. If the wearer of the breathing apparatus does not move for a defined time, he is informed of this by an announcement via the voice output device 70 indicated that an alarm will be triggered shortly. He can acknowledge the announcement with a movement. In this case, the time count starts again. If this confirmation is not given, the main alarm for locating the wearer is triggered via the signal generator 10 and an emergency data telegram is transmitted to the base station 20. This alarm corresponds to the alarm that is triggered when the emergency call device is actuated.
  • the measuring cycle is repeated until the voltage source 105 is exhausted.
  • the high-pressure part of the breathing apparatus is vented at the end of use, so that the pressure drops noticeably below 10 bar. It is typically 1 bar.
  • the control unit 30 recognizes that the operation has ended and sends an unsubscribe message to the base station 20.
  • the handset 21 now returns to the idle state and monitors the pressure present until it again exceeds the values specified above. Then the measuring cycle starts again. If the handset 21 is placed in the holder again, the handset 21 is automatically switched off and the batteries 105 are charged.
  • the most difficult task of the handset 21 is to transmit the accumulated data to the base station 20 without interference.
  • it in order to transmit data over a radio link, it must first be modulated, because it is not possible to transmit a DC-bound NRZ (Non Retum to Zero) signal, such as a binary data stream, without further coding.
  • the receiver must regenerate the clock and second, it must be able to clearly differentiate the signal levels (high and low).
  • modulation methods that can be used with an FM (Frequency modulation) transmission can use.
  • a frequency-doubled bi-phase M format was selected.
  • an in-phase change of state takes place at the beginning of each bit cell, so that the reception clock can be clearly recovered from the signal.
  • the principle is shown schematically in FIG. 2. This coding can be carried out by a coder 50, which can already be implemented in the microcontroller 30. In this case, no further discrete circuits in the handset 21 are required.
  • the mobile part 21 essentially serves to record and transmit the status data acquired by the sensors 42, 44, 46 and 48 to the base station 20 and to output the pressure, the temperature, the remaining operating time and the withdrawal warning.
  • the functional blocks described below are the central control unit 30, the voltage supply 105, the pressure sensor 42, the temperature sensor 48, the
  • Speech unit 70 and the UHF transmitter 60 as can be seen in FIG. 3.
  • the handsets 21 are controlled, for example, by an 80C535 microcontroller 30 in a compact design.
  • the microcontroller provides three 8-bit I / 0 ports and eight 12-bit A / D converters (not shown).
  • a built-in real-time clock ensures correct time information, while a 256-byte EEPROM memory stores 100 measurement data in a non-volatile manner.
  • To the outside is an RS-232 Interface 77 is available, via which stored data can be transferred to a PC or laptop for graphic display and evaluation.
  • the control unit 30 automatically recognizes whether an interface cable has been connected and then switches to the
  • the stored data stock can now be called up from the memory 100 by a PC or the corresponding software and the memory can be deleted for reuse. All subsequent circuit parts are controlled by this central control unit 30.
  • the handset 21 has a voltage supply device 105, for example an accumulator made of six NiCd cells with a total voltage of 7.2V. This voltage is converted to 5V by a voltage converter in order to then serve the central control unit 30 as a supply voltage. At the same time, it feeds a DC-to-DC converter 107 of the LT1301 type, which generates a voltage of 12V when required to operate the air pressure sensor 42.
  • This DC-DC converter 107 works on the principle of a charge pump, in that it gradually charges a capacitor by means of a coil to the desired voltage. It achieves an efficiency of around 87% with a required output current of 30mA. The fully charged battery is sufficient for an operating time of at least 10 hours. It is kept fully charged during standby.
  • the pressure sensor 42 which detects the current pressure of the compressed air breathing apparatus 22, has to withstand pressures up to at least 300 bar, since both compressed air cylinders with 200 and 300 bar are used. A screwable sensor was used here for pressures up to 400 bar, the bursting pressure being over 2400 bar.
  • the connection to the breathing apparatus is made via a quick filling device of the PA94 + compressed air breathing apparatus, which leads directly to the bottles (high pressure part).
  • the pressure sensor 42 operates with an operating voltage of 10-30 V; therefore is one
  • DC voltage conversion necessary which takes place in the above-mentioned DC voltage converter 107. It supplies a direct voltage in the range of 1-6 volts which is proportional to the applied pressure. This is fed directly to an A / D converter of the microcontroller 30 and further processed there.
  • the ambient temperature is detected by the KTY10 temperature sensor 48, which changes its resistance linearly with the prevailing temperature.
  • This sensor 48 is also directly connected to an A / D converter of the microcontroller 30 via a voltage divider.
  • the current pressure, the temperature and the expected remaining time of use can be announced to the wearer of the breathing apparatus by means of the voice output device 70.
  • a warning is also given acoustically about a low battery 105 and the placing of an emergency call is verbally confirmed.
  • All these Functions are carried out, for example, by an IC of the type ISD 2560, which can store speech at an 8 kHz sampling frequency (this corresponds to ISDN telephone quality) in an analogue manner for up to 60 seconds.
  • this IC uses a relatively new analog storage method. The instantaneous values are stored directly as a charge in a memory cell without going through a converter.
  • the voice quality is noticeably better with a significantly lower memory requirement and no voltage is required for data retention.
  • the content of the voice memory can be addressed directly at 100 ms intervals; it is therefore easily possible to generate voice messages from compound syllables.
  • a typical announcement reads, for example, "time remaining 25 minutes; bottle pressure 180 bar.” If the battery voltage is too low, "Warning! Battery level low! reported. The handset 21 reports that it is ready for use with "Your device is ready for use.” And the placing of an emergency call is acknowledged with "Your emergency call is being made.”
  • a small earphone or a headphone 80 built into the helmet serves as the loudspeaker.
  • a wireless transmission method such as a radio transmission useful; because all other options (e.g. infrared connection) are ruled out due to the lack of a view connection and the insufficient range.
  • the so-called LPD range in the 70 cm band was selected for the frequency selection, in which the frequency of 433.925 MHz used in the exemplary embodiment also lies.
  • the transmission power is limited to 10 mW, which is sufficient for the purposes provided in the exemplary embodiment.
  • the frequency band might have to be changed and the transmission power increased significantly so that transmission from larger buildings is ensured.
  • the UHF transmitter 60 is manufactured in a miniature version and is located on the outside of the shielded handset 21 in order to avoid HF influences on the circuit.
  • the modulation input of the UHF transmitter 60 is connected directly to an output of the microcontroller 30, which
  • a lambda / 4 wire antenna is used as antenna 62, which has a length of approximately 17 cm at this frequency.
  • the UHF transmitter 60 is activated only when required.
  • FIG 4 an embodiment for the base station 20 is shown as a block diagram.
  • a central control unit 30 controls the entire base station 20.
  • the operator can use a keyboard 110 to issue control commands enter.
  • Messages from the monitoring system are output on a liquid crystal display 170.
  • the central control unit 30 'receives data from each handset 21 via a UHF receiver 120 and a decoder 140.
  • seven light-emitting diodes of which only three light-emitting diodes are shown with the reference numerals 152, 154 and 156, are used to visually display the operating state.
  • there are four red light indicators each of which is assigned to one of the handsets 21. They indicate a triggered emergency call.
  • Another red light-emitting diode signals a low battery voltage in the base station 20.
  • the two remaining, green LEDs serve to indicate the strength of the received UHF radio signal and the valid reception data.
  • a buzzer 160 is used for the acoustic output of warning and alarm messages.
  • the base station 20 collects the incoming data from the mobile parts 21 and displays it on the liquid crystal display 170. In order to ensure the readability of the information even in the dark or inadequate lighting, the display 170 is provided with a
  • the 3 x 4-key keypad 110 is used, which can consist of a self-adhesive membrane keyboard. This keyboard 110 can also be splash-proof.
  • the base station 20 is used, for example, in a charging holder, for example in a vehicle; in which the batteries of the base station 20 are constantly kept at full charge. If the base station 20 from the Removed charging bracket, it is automatically activated and starts a self-test in which the display 170, the LEDs 152, 154, 156 and the warning buzzer 160 are checked. Furthermore, the battery voltage is checked under load. If this test, which only lasts a few seconds, is completed, the base station 20 is in the standby state and waits for the data telegram from a handset 21. Incoming data are checked for correctness in the base station 20 and are then immediately displayed on the liquid crystal display 170. Each of the four handsets 21 has the
  • Liquid crystal display 170 via its own display line, in which, for example, the handset number, the last transmitted bottle pressure, the last transmitted temperature, the elapsed operating time and the remaining time which is likely to be displayed are displayed side by side.
  • Possible displays in a status column are "OK” for the normal state, "LOW” for reaching the withdrawal pressure ( ⁇ 60 bar), "SOS” for a triggered emergency call and "BAT” for a low battery voltage.
  • the ad has
  • SOS has the highest priority and replaces an existing "BAT” or "LOW” display.
  • An incoming emergency call from a handset 21 is signaled acoustically and optically.
  • the corresponding red warning LED flashes while the buzzer 160 emits an alternating alarm tone. This message must be from
  • the base station 20 is accommodated in a T-shaped housing and can be carried comfortably in one hand.
  • the keyboard 110 is housed in the lower part, while the upper part houses the liquid crystal display 170.
  • the radio receiver 120 can be installed in a separate housing on the rear.
  • the batteries are on the outside on the back of the device and can be changed quickly without tools.
  • the essential functional blocks of the base station 20 are explained in more detail below.
  • Miniature version manufactured The performance data of the 80C535 microcontroller 30 'used with 32kB RAM and 32kB ROM are the same. Only a real-time clock and an EEPROM are not necessarily installed here.
  • the central control unit 30 'of the base station 20 has to take on significantly more control tasks; because in addition to receiving and decoding the status data of the respective handsets 21, the display 170 must also be activated and the keyboard 110 must be queried.
  • the first point of contact for the data telegrams is the UHF receiver 120, which can be located in an attachment housing on the back of the base station 20.
  • the UHF receiver 120 works as a double superhet on a reception frequency of 433.925 MHz and offers a sensitivity of 0.3 ⁇ V (at 12 dB SINAD). If the reception level is sufficient, the UHF receiver 120 provides a switching voltage that signals the presence of data to the subsequent function groups.
  • the received LF signal passes from the output of the receiver 120 to an amplifier stage 130. From there, the amplified signal passes through a decoder 140, such as pulse recovery circuit 140, which generates a data stream with the NRZ code from the incoming coded data signal.
  • the signal conditioning ends at the microcontroller 30 '.
  • the base station 20 is supplied with power via eight NiCd mignon batteries which are attached to the rear of the device by means of Velcro.
  • the voltage of approximately 9.6 V feeds the buzzer 160 and the UHF receiver 120 directly and is regulated down to 5 volts for the operation of the microcontroller 30 ′ and the display 170.
  • the base station 20 is connected to the charger by means of a socket in the device, so that it is not necessary to remove the batteries. At the same time, the base station 20 is always ready for operation.
  • a fully charged battery lasts for an operating time of around 5-8 hours, depending on whether the lighting is active or not.
  • the loading time is about half an hour when the battery is completely discharged.
  • control unit microcontroller

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Alarm Systems (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

L'invention concerne un système de surveillance permettant de surveiller des porteurs de masques à gaz, une partie mobile et une station de base s'utilisant dans un système de ce type. Afin de réduire les risques potentiels pour les porteurs de masques à gaz, des données du système sont transmises en continu à une station de base (20) à l'aide d'une partie mobile (21) comportant un émetteur radio (60) et montée sur un respirateur à air comprimé (22). Des signaux d'alarme et de détresse sont transmis sous forme visuelle et/ou acoustique aussi bien au porteur du masque à gaz qu'à une personne chargée de la surveillance.
EP99920686A 1998-05-19 1999-04-16 Systeme de surveillance de porteurs de masques a gaz Expired - Lifetime EP1077742B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19822412A DE19822412B4 (de) 1998-05-19 1998-05-19 System zur Überwachung von Atemschutzgeräteträgern
DE19822412 1998-05-19
PCT/EP1999/002573 WO1999059676A1 (fr) 1998-05-19 1999-04-16 Systeme de surveillance de porteurs de masques a gaz

Publications (3)

Publication Number Publication Date
EP1077742A1 true EP1077742A1 (fr) 2001-02-28
EP1077742B1 EP1077742B1 (fr) 2007-06-06
EP1077742B2 EP1077742B2 (fr) 2011-05-25

Family

ID=7868271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99920686A Expired - Lifetime EP1077742B2 (fr) 1998-05-19 1999-04-16 Systeme de surveillance de porteurs de masques a gaz

Country Status (6)

Country Link
US (1) US6472988B1 (fr)
EP (1) EP1077742B2 (fr)
AT (1) ATE363928T1 (fr)
CA (1) CA2337631A1 (fr)
DE (2) DE19822412B4 (fr)
WO (1) WO1999059676A1 (fr)

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WO2004091725A1 (fr) 2003-04-15 2004-10-28 Peter Aust Procede pour surveiller au moins deux personnes assistees par une source externe d'air respiratoire

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EP1077742B1 (fr) 2007-06-06
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ATE363928T1 (de) 2007-06-15
CA2337631A1 (fr) 1999-11-25
DE19822412B4 (de) 2008-06-05
WO1999059676A1 (fr) 1999-11-25
DE59914367D1 (de) 2007-07-19
EP1077742B2 (fr) 2011-05-25

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