EP1077742B2 - Systeme de surveillance de porteurs de masques a gaz - Google Patents

Systeme de surveillance de porteurs de masques a gaz Download PDF

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Publication number
EP1077742B2
EP1077742B2 EP99920686A EP99920686A EP1077742B2 EP 1077742 B2 EP1077742 B2 EP 1077742B2 EP 99920686 A EP99920686 A EP 99920686A EP 99920686 A EP99920686 A EP 99920686A EP 1077742 B2 EP1077742 B2 EP 1077742B2
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EP
European Patent Office
Prior art keywords
status data
base station
mobile part
monitoring system
sensor
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EP99920686A
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German (de)
English (en)
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EP1077742B1 (fr
EP1077742A1 (fr
Inventor
Sven Feld
Christian Giudici
Thorsten Kiesewalter
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Scott Technologies Inc
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Scott Technologies Inc
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    • 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 monitoring respirator wearers, a handset and a base station for use in such a system.
  • the fire service uses self-contained breathing apparatus in use, so-called compressed air breathing apparatus.
  • compressed air breathing apparatus By means of these devices, the firefighters / -women can still perform work in completely smoke-filled 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 with a cylinder capacity of 4 or 6 liters of compressed air.
  • the air supply is 1600 l, which lasts for a duration of use of about 20 minutes for medium-heavy work.
  • the monitoring device has a time measuring device, which can be triggered by the person to be monitored itself.
  • An alarm implemented in the monitor is activated when a preset period of time has elapsed after the timer has been triggered.
  • a similar microprocessor-based monitoring system for time-limited activities is from the DE 296 20 650 known, which additionally has a display through which all parameters are visualized.
  • a monitoring device which can be used in conjunction with respiratory protective devices, which are worn for example by firefighters.
  • This device contains a pressure sensor as well as a motion sensor.
  • An alarm device generates a warning signal when the pressure reaches a critical value or when no more movement of the user is detected.
  • the monitoring device has means for transmitting data of the pressure sensor and the motion sensor as well as alarm signals via an infrared connection to an external radio device, which in turn forwards the data over a radio link to a user monitoring manager.
  • the U.S. 5,392,771 discloses a monitoring system for portable respiratory protective equipment.
  • the monitoring system has a transmitter and a separate receiver. Both transmitter and receiver are worn by the user of the respirator.
  • the transmitter is associated, for example, a pressure sensor and transmits the detected data, for example via radio to the receiver.
  • the present invention relates to a radio transmission between a user-carried mobile device and a remote from the user base station.
  • the invention is therefore based on the object to provide a monitoring system, a handset and a base station, with which it is possible to better monitor and protect people wearing respirators during use and in particular in an emergency.
  • a central idea of the invention is to provide a substantially automatically operating monitoring system that inform each respirator wearer of a task force and responsible for this group supervisor at any time of use the state of his respiratory protective device or respiratory protective equipment and in an emergency both in the Respiratory protective device carrier in distress as well as in the monitoring person can trigger an alarm.
  • the monitoring system has at least one handset, which can be connected to a compressed-air breathing apparatus, which can be fastened, for example, on the back of a wearer.
  • the handset is associated with at least one sensor for detecting predetermined state data, in particular state data of the compressed air respirator.
  • a base station is 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 that can be taken by the supervisor to any location.
  • the mobile part has a radio transmitter.
  • the base station contains a radio reception device for receiving the status data transmitted by the mobile part.
  • the handset as well as the base station each contain a warning and / or alarm device which generates optical and / or acoustic signals as a function of the detected status data.
  • the warning and / or alarm device may be, for example, loudspeakers and light-emitting diodes, which can be controlled accordingly.
  • a central control unit is provided in the mobile unit in order to transmit a message for registering or deregistering the respective mobile unit at the base station.
  • a pressure sensor for detecting the pressure of the compressed air cylinders of the SCBA, a temperature sensor for detecting the ambient temperature of the respirator wearer, a motion sensor for detecting movements of the respirator wearer and / or a sensor for detecting an emergency call function triggered by the respiratory protective device carrier may be connected to the mobile part.
  • Notruffunktion can be triggered, for example, by removing a handle attached to the strap of the Preßluftatmers handle.
  • the warning and / or alarm device is activated as soon as the respective sensors have detected an undershooting or exceeding a predetermined threshold value.
  • an adjustable time measuring device is provided for measuring the time elapsed from the triggering of the time measuring device.
  • the pressure of the compressed air cylinder can be determined by the time measuring device and a central control unit, the remaining operating time of the respective respirator wearer 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.
  • a voice output device which can transmit predetermined messages, in particular the pressure, the temperature and warning and alarm messages, in linguistic form at predetermined time intervals to the wearer of the respirator in response to the detected status data ,
  • the handset expediently has an interface for the wired and wireless connection of an earphone or a headset implemented in the helmet of the respirator wearer to the voice output device.
  • a display device which can display the status data of all registered mobile parts is implemented in the base station.
  • a memory for temporary storage of the detected status data and an interface for connecting an external computer to which the stored status data can be output are provided in the mobile unit.
  • the base station In order to be able to transmit the detected status data in an interference-free manner to the base station via a radio channel, first of all analog / digital converters are assigned to each sensor, which convert the analog measured variables into digital data. Subsequently, the digitized state data are supplied to a coder, which converts the digital state data to be transmitted, for example, 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 of the handset and the base station for example, in each case via NiCd batteries that can be attached to the back of each device by means of Velcro.
  • 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 respirator and the voice output device is activated only when the pressure difference has exceeded a predetermined value.
  • a mobile monitoring device for attachment to a compressed air breathing apparatus of a monitoring system.
  • the mobile, monitoring device has a central control device, which is connectable to at least one sensor for detecting predetermined state data, in particular state data of a compressed air respirator.
  • a radio transmitter for wireless transmission of the detected state data to a base station and a warning and / or alarm device is provided which generates optical and / or acoustic signals in response to the detected state data.
  • the central control unit is designed to transmit a message for logging in or out of the mobile unit at the base station.
  • the mobile monitoring device comprises a control device to which a pressure sensor, a temperature sensor, a motion sensor, a sensor for detecting a triggered by the respirator carrier emergency call function and / or an adjustable time measuring device can be turned on.
  • an interface for wired or wireless connection of a headphone to the voice output device and an interface for turning on an external computer is provided.
  • a base station for use in a surveillance system.
  • the base station has for this purpose a radio receiving device for receiving the status data sent by a handset attached to a compressed air breathing apparatus, a warning and / or alarm device which generates optical and / or acoustic signals in response to the received status data, a display device for displaying the status data of each the base station registered handset and means for logging in and out of a handset via the radio receiver.
  • vital data from multiple respirator wearers as well as system health data may be transmitted over a radio link to a base station and, depending on this, alarm messages may be raised to both the supervisor and respirator wearers. It is advantageous here that rescue measures can be initiated much earlier and that largely human errors are eliminated, since the data are constantly exchanged.
  • the monitoring system after FIG. 1 essentially comprises a base station 20 assigned to a monitoring person and, for example, four mobile parts 21, which can communicate with the base station 20 via a wireless connection, in particular via a radio channel.
  • Each handset 21 is disposed on a compressed air breathing apparatus 22, which may be strapped on the back of a respirator wearer.
  • the handset 21 and the base station 20 of the monitoring system will be described in detail below.
  • the mobile part 21 comprises, among other things, the following components: A central control unit 30, here a so-called microcontroller with built-in real-time clock, a memory 100, an interface 75 for switching on a headphone 80 and an interface 77 for switching on, for example, an external personal computer.
  • a central control unit 30 a so-called microcontroller with built-in real-time clock
  • a memory 100 for storing data
  • an interface 75 for switching on a headphone 80 and an interface 77 for switching on, for example, an external personal computer.
  • a pressure sensor 42, a temperature sensor 48, a motion sensor 44 and a sensor 46 for detecting the triggering of an emergency call device by the wearer of the respirator are connected as monitoring sensors.
  • a digital speech output device 70 predetermined announcement texts can be output as normal speech via the switched-on headphones 80 to the wearer of the respiratory protective device.
  • the system states detected by the sensors 42, 44, 46 and 48 and supplied to the microcontroller 30 can be transmitted to the base station 20 via a UHF transmitter 60 and via a transmission antenna 62.
  • a voltage source 105 provides the handset 21 with the required voltage.
  • the voltage source 105 embodied as an accumulator can be fastened to the outside of the housing of the mobile part 21. Since the pressure sensor 42 requires a different voltage than the other components, it is supplied via a DC-DC converter 107 with the required Gleichspannug.
  • the handset 21 is, as already mentioned, attached to a compressed air breathing apparatus 22 and electrically connected by means of connecting cables to the external sensors 42, 44, 46 and 48.
  • a connection line is laid, for example, on the left strap to chest level of the wearer and there connected to an emergency call device, while another line leads to the headphone 80. Since in use with SCBA 22 is usually urgent, special emphasis was placed on making the operation as simple as possible. The process of the whole process is automated so far that no operations are required by the carrier.
  • the power supply is designed so that the accumulators 105 are always kept in the idle state in the full state. For this purpose, the accumulators 105 are connected to a charger. However, the handset 21 itself is not active.
  • the voltage source 105 is automatically disconnected from the charger and the handset 21 is activated. It remains but now as long as at rest until the SCBA 22 is turned on. Detects the central control unit 30 of the handset 21 now that the pressure on the sensor 42 has risen in a 200-bar compressed air cylinder to about 180 bar and to over 270 bar in a 300-bar compressed air cylinder (minimum pressure, which will be present at the beginning of use must), it reports acoustically, for example via the voice output device 70 and the headphones 70 the wearer of the respirator the operational readiness of the unit: "Your device is ready for use.” Immediately thereafter, the central control unit 30 sends via the radio transmitter 60 and the antenna 62, a data telegram to the base station 20, with which the Miobilteil 21 is registered as active.
  • the voice output device 70 is followed, for example, by 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.
  • a time measuring device 90 now also starts. From now on, a measurement of the pressure of the compressed air breathing device 22 assigned to the mobile part 21 takes place every 15 seconds. However, in order not to play the announcement of the instantaneous pressure unnecessarily often, the central control unit 30 first performs a comparison of the current pressure with the last measured value, which is stored in a memory 100. Only when the comparison shows that the pressure has dropped by 10 bar or more, the new pressure value is transmitted via the voice output device 70 and the headphones 80 to the respirator wearer and transmitted to the base station 20.
  • the value is stored only in the memory 100, which may be an EEPROM, in the handset 21 and / or in the base station 20 to be evaluated later, for example, in a switched on the interface 77 to the handset 21 personal computer.
  • the memory 100 has, for example, a size of 256 bytes, which is sufficient for recording the pressure values up to a usage time of about one hour. Should the operating time exceed this value, which is not to be expected, then the oldest pressure values are deleted so that the values of the last hour are always available (roll memory).
  • an announcement of the pressure is not made to the exact reading in bar, although the measuring detection of the pressure sensor 42 allows this, but it is rounded down to 5's or 10's.
  • 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 22 has fallen 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 service time / pressure announcement, the voice warning: "Immediate withdrawal" occurs.
  • an acoustic confirmation is first issued via the voice output device 70 "your emergency call is issued". This process can then no longer be paused or undone.
  • the control unit 30 of the mobile unit 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 facilitates finding the carrier. Thereafter, the measurement cycle is continued, i. At intervals of 15 seconds, the pressure is checked and, if necessary, announced and transmitted to the base station 20. A repeated actuation of the emergency call device now leads to no further transmission.
  • Another safety device 44 is a motion sensor 44, also known as "dead man's circuit", which responds to immobility of the respirator wearer.
  • This motion sensor 44 may be installed in addition or alone. Should the wearer of the respirator not move for a defined period of time, he will be notified by an announcement on the Pubausgabeeinrichcung 70 that shortly an alarm is triggered. He can acknowledge the announcement by a movement. In this case, the time counting starts again. If this confirmation does not occur, then the main alarm for locating the carrier is triggered by 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 exhaustion of the voltage source 105.
  • the control unit 30 recognizes that the mission has ended and sends a logoff message to the base station 20.
  • the mobile unit 21 now returns to idle status and monitors the applied pressure until it again exceeds the values indicated above. Then the measuring cycle starts again. If the handset 21 is placed back in the holder, there is an automatic shutdown of the handset 21 and a charge of the accumulators 105th
  • the most difficult task of the handset 21 is to transmit the accumulated data to the base station 20 without interference.
  • they in order to transmit data over a radio link, they must first be modulated because it is not possible to transmit a DC-to-NRZ (non-retum to zero) signal, such as a binary data stream, without further coding.
  • the receiver must regenerate the clock and second, the signal levels (high and low) can clearly distinguish.
  • modulation techniques that can be used in FM (Frequency Modulation) transmission.
  • a frequency-doubled bi-phase M format was selected. Here, at the beginning of each bit cell, an in-phase state change takes place, so that the receive clock can be unambiguously recovered from the signal.
  • the principle is schematic in FIG.
  • the handset 21 is used essentially for receiving and transmitting the state data acquired by the sensors 42, 44, 46 and 48 to the base station 20 as well as the voice output of the pressure, the temperature, the remaining service time and the withdrawal warning.
  • the function blocks described below are the central control unit 30, the power supply 105, the pressure sensor 42, the temperature sensor 48, the voice output unit 70, and the UHF transmitter 60, as in FIG Fig. 3 you can see.
  • the control of the mobile parts 21 takes place, for example, by a compact 80C535 microcontroller 30.
  • the microcontroller provides three 8-bit 1/0 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 100 stores measurement data power fail-safe.
  • an RS-232 interface 77 is available, can be transmitted via the stored data in a PC or laptop for graphical display and evaluation.
  • the control unit 30 automatically detects whether an interface cable has been connected and then switches to the diagnostic mode. From a PC or the corresponding software, the stored data can now be retrieved from the memory 100 and the memory for reuse can be deleted. All subsequent circuit parts are controlled by this central control unit 30.
  • the mobile part 21 has a power supply device 105, for example an accumulator of six NiCd cells with a total voltage of 7.2V. This voltage is converted by a voltage converter to 5V to then serve as a supply voltage to the central control unit 30. Simultaneously, it feeds a DC-DC converter 107 of the type LT1301, which generates a voltage of 12V when needed to operate the air-pressure sensor 42.
  • This DC-DC converter 107 operates on the principle of a charge pump by gradually charging a capacitor by means of a coil to the desired voltage. It achieves an efficiency of approximately 87% with a required output current of 30mA. The fully charged accumulator is sufficient for a minimum operating time of 10 hours. He is kept on full charge during standby.
  • the pressure sensor 42 which detects the current pressure of the Preßluftatmers 22, must withstand pressures of at least 300 bar, since both Preßluftflaschen be used with 200 as well as 300 bar. A screw-type sensor was used for pressures up to 400 bar, whereby the bursting pressure is above 2400 bar.
  • the connection with the respiratory protection device takes place via a quick filling device of the PA94 + compressed air respirator, which leads directly to the bottles (high pressure part).
  • the pressure sensor 42 operates with an operating voltage of 10 - 30 V; Therefore, a DC voltage conversion is necessary, which takes place in the above-mentioned DC-DC converter 107. It supplies a direct voltage proportional to the applied pressure in the range of 1-6 volts. This is fed directly to an A / D converter of the microcontroller 30 and further processed there.
  • the ambient temperature is detected by the temperature sensor 48 of the type KTY10, which changes its resistance linearly to the prevailing temperature. Via a voltage divider, this sensor 48 is also directly connected to an A / D converter of the microcontroller 30.
  • the current pressure, the temperature and the expected remaining service time can be regularly announced to the wearer of the respirator by means of the voice output device 70.
  • a warning is given to an accumulator 105 which is about to run out and verbally confirms the discontinuation of an emergency call. All of these functions are performed, for example, by an IC of the type ISD 2560, which can store speech at an 8 kHz sampling frequency (equivalent to ISDN telephone quality) for up to 60 seconds.
  • this IC uses a relatively new analog storage method.
  • the instantaneous values are stored directly analogously as a charge in a memory cell without going through a converter via the detour.
  • Speech quality is noticeably better with considerably less memory required, and no voltage is required to retain data.
  • the contents of the speech memory can be addressed directly in 100ms intervals; It is therefore easily possible to generate voice messages from composite syllables. This makes it possible to record individual numbers and text modules on the IC, which are then retrieved by the microcontroller 30 in the required order. This is a typical announcement about "remaining time 25 minutes, bottle pressure 180 bar.” Too low battery voltage is indicated by "Attention! Battery low! reported.
  • the ready-to-use state reports the mobile unit 21 with "your device is ready for use.” and the Sending an emergency call is acknowledged with "your emergency call is being canceled".
  • the speaker is a small earphone or built-in helmet headphone 80th
  • a wireless transmission method such as e.g. a radio transmission appropriate; because all other possibilities (for example infrared connection) are ruled out because of the missing line of sight and the lack of range.
  • the so-called LPD range was selected in the 70cm band in the frequency selection, in which also the frequency of 433.925 MHz used in the embodiment is.
  • the transmission power is limited to 10 mW, which is sufficient for the purposes provided in the embodiment, however.
  • the UHF transmitter 60 is miniaturized and located on the outside of the shielded handset 21 to avoid RF interference to the circuitry.
  • the modulation input of the UHF transmitter 60 is connected directly to an output of the microcontroller 30, which generates the data telegram.
  • antenna 62 for example, a lambda / 4 wire antenna is used, which has a length of about 17 cm at this frequency.
  • the UHF transmitter 60 is activated only when needed.
  • FIG. 4 an embodiment of the base station 20 is shown as a block diagram.
  • a central control unit 30 controls the entire base station 20. Control commands can be input by the operator via a keyboard 110. Messages of the monitoring system are output on a liquid crystal display 170. Via a UHF receiver 120 and a decoder 140, the central control unit 30 'receives data from each handset 21. For example, seven light emitting diodes, of which only three are indicated by the reference numerals 152, 154 and 156 are used for visual display of the operating state. On the one hand, these are four red indicator lights, each of which is associated with 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 are used to display 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 of the handsets 21 and displays them on the liquid crystal display 170.
  • the display 170 is provided with a backlight. It works automatically and is switched on or off depending on the ambient brightness. In addition, it is possible to generally switch off the lighting by pressing a button.
  • the 3 x 4-field keypad 110 is used, which may consist of a self-adhesive membrane keyboard. This keyboard 110 may also be splash-proof.
  • the base station 20 is, for example, in a charging holder, e.g. used in a vehicle; in which the accumulators of the base station 20 are kept constantly at full charge. If the base station 20 is removed from the charging holder, 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, there is a check of the battery voltage under load. If this test, which lasts only a few seconds, is completed, the base station 20 is in the ready state and waits for the data telegram of a handset 21. Incoming data is checked for correctness in the base station 20 and then immediately displayed on the liquid crystal display 170.
  • Each of the four mobile parts 21 has its own display line on the liquid crystal display 170, in which side by side, for example, the handset number, the last transmitted bottle pressure, the last transmitted temperature, the previously used mission time and the expected remaining time remaining is displayed. Possible indications 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 "SOS” display has the highest priority and replaces an existing "BAT” or "LOW” display.
  • An incoming emergency call of a handset 21 is signaled acoustically and optically.
  • the corresponding red warning LED flashes while the buzzer 160 is emitting an alternating alarm tone. This message must be acknowledged by the user by simultaneously pressing the two "alarm-off” keys on the keyboard 110.
  • the buzzer 160 stops, but the warning LED stays on until the handset 21 is disconnected.
  • the base station 20 is how Fig. 4 shows, housed in a T-shaped housing and can be comfortably carried in one hand.
  • the upper part of the liquid crystal display 170 houses.
  • the radio receiver 120 can be installed in a separate housing on the back.
  • the batteries are located on the back of the device and can be changed quickly without tools.
  • the essential functional blocks of the base station 20 will be explained in more detail below.
  • the performance data of the used 80C535 microcontroller 30 'with 32kB RAM and 32kB ROM are the same. Only a real-time clock and an EEPROM is not necessarily installed here.
  • the central control unit 30 'of the base station 20 must take on significantly more control tasks; because in addition to receiving and decoding the status data of the respective mobile parts 21, the display 170 must also be controlled and the keyboard 110 queried.
  • the first point of contact for the data telegrams is the UHF receiver 120, which can be located in a mounting housing on the back of the base station 20.
  • the UHF receiver 120 operates as a double superheter on a receive frequency of 433.925 MHz and provides a sensitivity of 0.3 ⁇ V (at 12 dB SINAD).
  • the UHF receiver 120 provides a switching voltage that signals the pending functional groups to queue data.
  • 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, e.g. Pulse recovery circuit 140, which generates from the incoming coded data signal, again a data stream with NRZ code.
  • the signal conditioning ends at the microcontroller 30 '.
  • the power supply of the base station 20 via eight NiCd Mignon batteries that are attached to the back of the device by means of Velcro.
  • the voltage of about 9.6 volts directly feeds the buzzer 160 and the UHF receiver 120 and is controlled down to 5 volts for operation of the microcontroller 30 'and the display 170.
  • the connection of the base station 20 to the charger is made by a socket present in the device, so that a removal of the batteries is not necessary.
  • the base station 20 is always ready for operation.
  • a fully charged battery lasts for about 5-8 hours, depending on whether the light is on or off.
  • the charging time is approximately half an hour when the battery is completely discharged.

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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)

Claims (19)

  1. Système de surveillance destiné à surveiller au moins un porteur d'appareil respiratoire, comprenant
    - au moins une partie mobile (21) apte à être reliée à un appareil respiratoire à air comprimé (22),
    - au moins un capteur (42, 44, 46, 48) associé à la partie mobile (21) et destiné à détecter des données d'état prédéterminées, notamment des données d'état de l'appareil respiratoire à air comprimé,
    - une station de base (20) apte à communiquer avec la partie mobile (21) par l'intermédiaire d'une liaison sans fil,
    - la partie mobile (21) comportant un dispositif d'avertissement et/ou d'alarme (5, 10) générant des signaux optiques et/ou acoustiques en fonction des données d'état détectées, et
    la station de base (20) comportant un dispositif de réception radio (120, 122) destiné à recevoir les données d'état émises par la partie mobile (21),
    caractérisé en ce que
    la partie mobile (21) comporte un dispositif d'émission radio (60, 62) destiné à transmettre les données d'état détectées à la station de base (20) et
    une unité de commande centrale (30) destinée à transmettre par radio un message de connexion ou de déconnexion de la partie mobile (21) à la station de base (20) et la station de base (20) comporte un dispositif d'avertissement et/ou d'alarme (152, 154, 156, 160) générant des signaux optiques et/ou acoustiques en fonction des données d'état reçues.
  2. Système de surveillance selon la revendication 1,
    caractérisé par
    un capteur de pression (42) destiné à détecter la pression de l'appareil respiratoire à air comprimé (22).
  3. Système de surveillance selon la revendication 1 ou 2,
    caractérisé par
    un capteur de température (48) destiné à détecter la température ambiante du porteur d'appareil respiratoire.
  4. Système de surveillance selon l'une des revendications 1 à 3,
    caractérisé par
    un capteur de mouvements (44) destiné à détecter des mouvements du porteur d'appareil respiratoire et/ou un capteur (46) destiné à détecter une fonction d'appel d'urgence déclenchée par le porteur d'appareil respiratoire.
  5. Système de surveillance selon l'une des revendications 1 à 4,
    caractérisé par
    un dispositif de mesure du temps (90) réglable destiné à mesurer le temps écoulé à compter du déclenchement du dispositif de mesure du temps.
  6. Système de surveillance selon l'une des revendications 1 à 5,
    caractérisé en ce que
    chaque partie mobile (21) comporte une unité de commande centrale (30) reliée à chacun des capteurs (42, 44, 46, 48), au dispositif de mesure du temps (90) et au dispositif d'avertissement et d'alarme (5, 10).
  7. Système de surveillance selon l'une des revendications 1 à 6,
    caractérisé en ce que
    la partie mobile (21) comporte un dispositif de sortie vocale (70) apte à transmettre au porteur d'appareil respiratoire des messages prédéterminés, notamment des messages d'avertissement et d'alarme sous forme vocale, à des intervalles de temps prédéterminés en réponse aux données d'état détectées.
  8. Système de surveillance selon l'une des revendications 1 à 7,
    caractérisé en ce que
    la partie mobile (21) comporte une mémoire (100) destinée à enregistrer temporairement les données d'état détectées.
  9. Système de surveillance selon l'une des revendications 1 à 8,
    caractérisé en ce que
    la partie mobile comporte une interface (75) destinée au raccordement par fil ou sans fil d'un écouteur (80) au dispositif de sortie vocale (70) et
    une interface (77) destinée au raccordement d'un calculateur externe.
  10. Système de surveillance selon l'une des revendications 1 à 9, caractérisé en ce que chaque partie mobile (21) comporte un codeur (50) destiné à coder les données d'état à transmettre et en ce que la station de base (20) comporte un décodeur (140) correspondant destiné à décoder les données d'état reçues.
  11. Système de surveillance selon l'une des revendications 1 à 10,
    caractérisé en ce que
    un convertisseur analogique/numérique est affecté à chaque capteur (42, 44, 46, 48) dans la partie mobile (21).
  12. Système de surveillance selon l'une des revendications 1 à 11,
    caractérisé en ce que
    chaque partie mobile (21) dispose d'un dispositif d'alimentation en énergie (105, 107) destiné à alimenter les capteurs (42, 44, 46, 48), l'unité de commande centrale (30), le dispositif d'avertissement et/ou d'alarme (5, 10) et le dispositif de sortie vocale (70).
  13. Système de surveillance selon l'une des revendications 1 à 12,
    caractérisé en ce que
    l'unité de commande (30) de chaque partie mobile (21) est conçue pour comparer la pression actuelle avec la dernière pression mesurée de l'appareil respiratoire à air comprimé et pour activer le dispositif d'avertissement et/ou d'alarme (5, 10) et/ou le dispositif de sortie vocale (70), lorsque la différence de pression est supérieure à une valeur prédéterminée.
  14. Système de surveillance selon l'une des revendications 1 à 13,
    caractérisé en ce que
    la station de base (20) comporte un dispositif d'affichage (170) destiné à représenter les données des d'état de chaque partie mobile (21) connectée.
  15. Dispositif de surveillance mobile destiné à être utilisé dans un système de surveillance selon l'une des revendications 1 à 14 apte à être fixé à un appareil respiratoire à air comprimé (22), comportant
    - une unité de commande centrale (30) apte à être reliée à au moins un capteur (42, 44, 46, 48) destiné à détecter des données d'état prédéterminées, notamment des données d'état d'un appareil respiratoire à air comprimé, et
    - un dispositif d'avertissement et/ou d'alarme (5, 10) générant des signaux optiques et/ou acoustiques en fonction des données d'état détectées,
    caractérisé par
    - un dispositif d'émission radio (60, 62) destiné à transmettre par radio sans fil à une station de base (20) les données d'état détectées,
    l'unité de commande centrale (30) étant configurée pour transmettre un message de connexion ou de déconnexion de la partie mobile (21) à la station de base (20).
  16. Dispositif de surveillance mobile selon la revendication 15,
    caractérisé en ce que
    l'unité de commande (30) est apte à être raccordée
    à un capteur de pression (42) destiné à détecter la pression de l'appareil respiratoire à air comprimé (22),
    à un capteur de température (48) destiné à détecter la température ambiante du porteur d'appareil respiratoire,
    à un capteur de mouvements (44) destiné à détecter des mouvements d'un porteur d'appareil respiratoire et/ou
    à un dispositif de mesure du temps (90) réglable destiné à mesurer le temps écoulé à compter du déclenchement du dispositif de mesure du temps.
  17. Dispositif de surveillance mobile selon la revendication 15 ou 16,
    caractérisé par
    un dispositif de sortie vocale (70) apte à transmettre au porteur de l'appareil respiratoire des messages prédéterminés, notamment des messages d'avertissement et d'alarme, sous forme vocale, à des intervalles de temps prédéterminés en réponse aux données d'état détectées.
  18. Dispositif de surveillance mobile selon l'une des revendications 15 à 17,
    caractérisé par
    une interface (75) destinée au raccordement par fil ou sans fil d'un écouteur (80) au dispositif de sortie vocale (70) et
    une interface (77) destinée au raccordement d'un calculateur externe.
  19. Station de base destinée à être utilisée dans un système de surveillance selon l'une des revendications 1 à 14, comportant
    un dispositif de réception radio (120) destiné à recevoir les données d'état envoyées par une partie mobile (21) fixée à un appareil respiratoire à air comprimé (22),
    caractérisé par
    un dispositif d'avertissement et/ou d'alarme (15, 154, 156, 160) générant des signaux optiques et/ou acoustiques en fonction des données d'état reçues,
    un dispositif d'affichage (170) destiné à représenter les données d'état de l'ensemble des parties mobiles (21) connectées à la station de base (20), et
    un dispositif de connexion et de déconnexion d'une partie mobile (21) par l'intermédiaire du dispositif de réception radio (120).
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
DE19822412 1998-05-19
DE19822412A DE19822412B4 (de) 1998-05-19 1998-05-19 System zur Überwachung von Atemschutzgeräteträgern
PCT/EP1999/002573 WO1999059676A1 (fr) 1998-05-19 1999-04-16 Systeme de surveillance de porteurs de masques a gaz

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

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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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Publication number Publication date
WO1999059676A1 (fr) 1999-11-25
EP1077742B1 (fr) 2007-06-06
US6472988B1 (en) 2002-10-29
ATE363928T1 (de) 2007-06-15
EP1077742A1 (fr) 2001-02-28
DE19822412A1 (de) 1999-11-25
CA2337631A1 (fr) 1999-11-25
DE19822412B4 (de) 2008-06-05
DE59914367D1 (de) 2007-07-19

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