WO2005082707A1 - Ordinateur de plongee - Google Patents

Ordinateur de plongee Download PDF

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Publication number
WO2005082707A1
WO2005082707A1 PCT/EP2005/001633 EP2005001633W WO2005082707A1 WO 2005082707 A1 WO2005082707 A1 WO 2005082707A1 EP 2005001633 W EP2005001633 W EP 2005001633W WO 2005082707 A1 WO2005082707 A1 WO 2005082707A1
Authority
WO
WIPO (PCT)
Prior art keywords
dive
depth
time
diver
diving
Prior art date
Application number
PCT/EP2005/001633
Other languages
German (de)
English (en)
Inventor
David Rhea
Sergio Angelini
Original Assignee
Uwatec 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
Application filed by Uwatec Ag filed Critical Uwatec Ag
Publication of WO2005082707A1 publication Critical patent/WO2005082707A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C11/32—Decompression arrangements; Exercise equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment
    • B63C2011/021—Diving computers, i.e. portable computers specially adapted for divers, e.g. wrist worn, watertight electronic devices for detecting or calculating scuba diving parameters

Definitions

  • the present invention relates to a dive computer.
  • Devices of this type are used during a dive to record parameters, in particular the current ambient pressure and the time or the time that has elapsed since the beginning of the dive, and to use them to display parameters of the dive that are relevant for the diver by means of a computing device arranged in the dive computer are of interest.
  • the term “dive computer” in the context of the present invention is to be understood to mean all devices which record physical, physiological and similar parameters during the dive and calculate parameters from them. Such diving computers can be designed in the form of a so-called diving watch, or it can be a device that is not designed as a watch in the classic sense, but has a housing that is worn by the diver on the wrist or is attached to the diving bottle via a hose and is built into a console, for example.
  • the term “dive computer” in the context of the present invention is also to be understood to mean devices which are constructed in two or more parts and in which a data transmission takes place between the individual parts of the device.
  • the first part can detect one or more sensors that measure, for example, the pressure of a replacement bottle, and the second part can be a receiving device that processes and displays the measured values received.
  • the first part can also be a Be a device that measures and processes the values and the second part of the device can be a display which is worn separately by the diver or which is arranged in particular in his mask as a head-up display, for measured values and derived quantities with numbers and / or represent symbols.
  • the data connection can take place via a cable that connects the parts to one another. It is also possible to connect two or more parts to one another via a wireless connection, between which the data are transmitted using radio waves, ultrasound, infrared or another suitable type of transmission.
  • the data itself can be transmitted analog or digital. Mixed forms are also possible.
  • a particular problem with diving arises from the fact that the solvency of the body fluids and the tissues for inert gases increases with increasing pressure. If the diver inhales air with normal composition under water, this leads in particular to nitrogen dissolving in the blood and tissue. When the diver ascends again, the pressure on the body is reduced, releasing the nitrogen. If the release of nitrogen takes place too quickly, this can lead to health impairments that are temporary in the lighter case, permanent in severe cases and can also lead to death. These health disorders are commonly referred to as decompression sickness.
  • the diver To avoid the occurrence of decompression sickness, the diver must slow down the desaturation. This is done by the diver ascending in certain Breaks deep into the water in order to slowly desaturate at the lower pressure.
  • diving tables were developed several decades ago, in which, based on experience gained, for example, in pressure chamber tests, the diver's decompression levels and decompression times be specified.
  • the diver plans how long he wants to stay at which depth level before carrying out the dive and then reads the required decompression stops from the table.
  • the conventional diving tables have the disadvantage that they only reproduce realistic values if the diver has been at a certain depth for the entire time. If the diver has stayed at different diving depths, he must calculate the decompression stops based on these tables as if he had spent the entire time at the lowest of the diving depth levels reached. Whenever the diver is at different depths, the use of the dive tables leads to unnecessarily long decompression stops.
  • the nitrogen uptake and nitrogen release in the tissue is determined using a mathematical model developed by Prof. Bühlmann at the University of Zurich simulated. Since the saturation and desaturation of the tissues takes place at different speeds depending on the type of tissue - for example, the blood is saturated and desaturated much faster than the thigh muscles - eight different types of tissue are simulated in the known device. The decompression stops are then determined based on the type of tissue that is most critical to the diver's current decompression status.
  • the device constantly shows the diver on the display how long it takes for the ascent and calculates from the remaining air volume in the diving bottle how long • the diver is allowed to stay at the respective diving depth level in order to have enough air supply for the ascent (Remaining Bottom Time).
  • the computing models of the dive computers are based on empirical values that were determined on the basis of comparative data from a large number of different people. In the interest of the health of the divers, this data is carefully assessed so that safety values are included in the displayed values. Furthermore, the dive computers can only take into account the constitution of the diver to a limited extent. A well-trained diver must therefore decompress considerably longer when using a dive computer than it would actually correspond to his physical condition. Finally, the dive computers can only partially, for example with trimix mixtures, the influence of the "tea divers" Take the selected breathing gas composition into account for decompression.
  • the depth-time characteristic value is preferably the integral of the diving depth related to the diving time, or - in other words - the average diving depth related to the time in which the diver stayed under water. For example, if the diver was 10 minutes at a depth of 10 m and 10 minutes at a depth of 20 m, the average diving depth displayed would be 15 m, based on the total diving time of 20 minutes. With a more precise invoice the descent time can also be taken into account, so that an exact average value results overall.
  • the diver is then no longer bound to a predefined diving depth, but can also determine his decompression status on the basis of this characteristic value if he has been at different diving depths for different times.
  • d c means the depth characteristic
  • ⁇ t the diving time that the diver has spent in a certain depth level
  • d the depth
  • the coefficients a and b can also be made dependent on the time and / or the diving depth, that is to say that the coefficient b is 1 at a diving depth of 10 m, for example, but 1.5 at a diving depth of 20 m that the depth is taken into account more for the average characteristic value.
  • the diver can determine how he wants to choose the coefficients a and b before the start of the dive.
  • a decompression model can also be used, e.g. was developed by Prof. Bühlmann and how it is used in the well-known dive computers of the brand "UWATEC".
  • additional coefficients are used, which the experienced diver can program himself. The diver can then adapt the model to his experience.
  • Such an adaptable model which simulates the saturation and desaturation of different types of tissue, can be carried out for a single type of tissue, which the diver can preferably determine himself, but it is also possible to use a model which takes into account up to 12 or more types of tissue.
  • the system can be designed in such a way that the saturation state of all types of tissue can be adapted to the experience of the diver via a coefficient, but it can also be designed in such a way that only certain types of tissue or tissues selectable by the diver can be adjusted Coefficients are changeable.
  • the concept of the coefficient is to be understood broadly, it includes not only fixed constants, but also adaptation curves and functions that are suitable for the Diver to effect desired individual adaptation of the model.
  • This computing device 2 is preferably a commercially available microprocessor which is connected to a memory 3.
  • the computing device is also connected to a display device 4, which displays numbers and symbols.
  • This device can be a device that works on the LED principle, but a device that works on the LCD or on the TFT principle is preferred. In the case of a design based on the LCD as well as on the TFT principle, the device can also be illuminated in order to improve the readability under water.
  • the device has a timer module 10, which outputs clock pulses that are used by the computing device 2 to determine the time.
  • This timer module can also be integrated directly into the computing device 2, that is to say in particular into the microprocessor.
  • the dive computer also has a pressure measuring device 11.
  • This pressure measuring device can be a piezo quartz, for example.
  • the values of this pressure measuring device are also passed on to the computing device and processed there.
  • the dive computer has a power supply in the form of a battery (not shown), which is preferably designed as a long-term battery. To improve the pressure stability, it is further preferred that the Computer is filled with a liquid, preferably silicone oil.
  • the computer can also be encapsulated with a hardening material or form a cavity sealed to the outside.
  • the dive computer is preferably in a standby mode, which is checked at predetermined time intervals to determine whether the pressure has increased. If there is a significant increase in pressure, the program stored in memory 3 assumes that the dive has started and measures the prevailing pressure at regular time intervals ⁇ t and uses this to determine the depth of the dive.
  • the displayed diving depth value corresponds to this diving depth level. However, if the diver has stayed at several depths, the diver is shown a mean depth value, which provides him with the characteristic value or an additional characteristic value for the decompression status.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Electric Clocks (AREA)

Abstract

L'invention concerne un ordinateur de plongée, pouvant être utilisé par un plongeur lors d'une plongée, comprenant un dispositif de mesure temporelle (10), grâce auquel le temps écoulé pendant la plongée peut être mesuré, un dispositif de mesure de la profondeur (11), grâce auquel le palier de plongée du plongeur à un moment précis peut être déterminé, un dispositif mémoire permettant de stocker des données et des programmes, un dispositif de calcul (2), qui détermine les valeurs du dispositif de mesure temporelle, les valeurs du dispositif de mesure de la profondeur et éventuellement, les valeurs des autres dispositifs de mesure par au moins un programme donné. L'ordinateur comprend également un dispositif d'affichage (4) permettant d'afficher les valeurs mesurées, déterminées par les dispositifs de mesure susmentionnés et les paramètres calculés par le dispositif de calcul de manière compréhensible pour le plongeur. Un paramètre profondeur-temps est déterminé au moyen des valeurs provenant des dispositifs de mesure temporelle et des dispositifs de mesure de la profondeur, puis il est affiché sur ledit dispositif d'affichage.
PCT/EP2005/001633 2004-02-18 2005-02-17 Ordinateur de plongee WO2005082707A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004007986.2 2004-02-18
DE200410007986 DE102004007986A1 (de) 2004-02-18 2004-02-18 Tauchcomputer

Publications (1)

Publication Number Publication Date
WO2005082707A1 true WO2005082707A1 (fr) 2005-09-09

Family

ID=34832786

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/001633 WO2005082707A1 (fr) 2004-02-18 2005-02-17 Ordinateur de plongee

Country Status (2)

Country Link
DE (1) DE102004007986A1 (fr)
WO (1) WO2005082707A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT510385B1 (de) 2010-09-13 2017-04-15 Ing Dr Arne Sieber Dipl Berührungssensitives display und methode zur bedienung eines tauchcomputers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569158A1 (fr) * 1984-08-16 1986-02-21 Jullian Michel Decompressimetre numerique a perfusions variables
US5031160A (en) * 1988-07-20 1991-07-09 Seiko Epson Corporation Small-sized electronic device with depth gauge
EP0439255A1 (fr) * 1990-01-10 1991-07-31 Seiko Epson Corporation Appareil électronique avec mesurage de profondeur
EP0550649A1 (fr) 1990-10-19 1993-07-14 Uwatec Ag Dispositif de surveillance d'appareils portatifs de respiration.
EP1142783A1 (fr) * 2000-04-07 2001-10-10 HTM SPORT S.p.A. Ordinateur de plongèe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569158A1 (fr) * 1984-08-16 1986-02-21 Jullian Michel Decompressimetre numerique a perfusions variables
US5031160A (en) * 1988-07-20 1991-07-09 Seiko Epson Corporation Small-sized electronic device with depth gauge
EP0439255A1 (fr) * 1990-01-10 1991-07-31 Seiko Epson Corporation Appareil électronique avec mesurage de profondeur
EP0550649A1 (fr) 1990-10-19 1993-07-14 Uwatec Ag Dispositif de surveillance d'appareils portatifs de respiration.
EP1142783A1 (fr) * 2000-04-07 2001-10-10 HTM SPORT S.p.A. Ordinateur de plongèe

Also Published As

Publication number Publication date
DE102004007986A1 (de) 2005-09-08

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