Device for and method of dive monitoring
First Claim
1. A device for monitoring the dive of a diver, comprising:
- a first pressure transducer which detects pressure in a diving flask of a breathing apparatus supplying the diver with breathing air;
a second pressure transducer which detects ambient pressure which is a measure of the water depth reached by the diver;
a timer serving to determine the time the diver has spent underwater;
a decompression computing means serving to compute, on the basis of time and ambient pressure values of said timer and said second pressure transducer, respectfully, which decompression stops the diver has to perform in surfacing and a total surfacing time;
a display means including a first display on which dive parameters may be indicated and which further comprises;
a memory means for storing pressure values as detected by said first pressure transducer in chronogical succession; and
a second computing means for (1) deriving a performance index from the stored pressure values detected by said first pressure transducer, which index is a measure of physical work performed by the diver, and (2) supplying this performance index to said decompression computing means so that this performance index is utilized by the decompression computing means in computing the decompression stops and the total surfacing time.
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Accused Products
Abstract
Device for and method of dive monitoring, wherein the pressure in a diving flask of a breathing equipment and the ambient pressure which the diver is exposed to at the respective water depth are detected. A decompression computing means is used to determine the respective decompression stops which the diver has to observe in surfacing, and how much time surfacing will require altogether. A performance index is derived from the variation of the pressure versus time in the diving flask, which index is a measure of the physical work performed by the diver. This performance index is supplied to the decompression computing means and is considered in the calculation of the total surfacing period.
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Citations
21 Claims
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1. A device for monitoring the dive of a diver, comprising:
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a first pressure transducer which detects pressure in a diving flask of a breathing apparatus supplying the diver with breathing air; a second pressure transducer which detects ambient pressure which is a measure of the water depth reached by the diver; a timer serving to determine the time the diver has spent underwater; a decompression computing means serving to compute, on the basis of time and ambient pressure values of said timer and said second pressure transducer, respectfully, which decompression stops the diver has to perform in surfacing and a total surfacing time; a display means including a first display on which dive parameters may be indicated and which further comprises; a memory means for storing pressure values as detected by said first pressure transducer in chronogical succession; and a second computing means for (1) deriving a performance index from the stored pressure values detected by said first pressure transducer, which index is a measure of physical work performed by the diver, and (2) supplying this performance index to said decompression computing means so that this performance index is utilized by the decompression computing means in computing the decompression stops and the total surfacing time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of monitoring a dive performed by a diver with mobile breathing equipment, including the following steps:
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detecting the pressure values in an air supply tank of said mobile breathing equipment; storing successively detected pressure values; detecting an index of air consumption by the diver in a predetermined period of time; with simultaneous execution of the following steps; detecting ambient pressure around the diver and determining a diving depth at which the diver is staying; computing the period for which the diver stays at said diving depth; whereupon the following steps are performed; determining a performance index from the detected index of air consumption, which is a measure of physical work performed by the diver during a specific period; computing decompression stops and total surfacing time period in consideration of time for which the diver has stayed at the respective diving depth levels, and from the measure of physical work performed by the diver during his stay; and displaying on a display at least one index which is decisive for the decompression conditions. - View Dependent Claims (21)
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Specification