Title:
DECOMPRESSION INFORMATION INDICATING DEVICE
Document Type and Number:
Japanese Patent JP3293245
Kind Code:
B2
Abstract:
PURPOSE: To provide the correct decompression information by calculating the partial pressure of gaseous nitrogen in each tissue by using the exhalation speed coefficient taking into consideration the respiration speed of gaseous nitrogen for each tissue of a human body in the diving operation, and calculating the time where the diving is possible in the non-decompressed condition and the decompression depth, the decompression time or the like.
CONSTITUTION: When a diver inhales the compressed air and starts the diving, the signal from a timer and counter circuit 4 is received by CPU 1, and the signal from a pressure sensor 10 is also received. CPU 1 converts the detected pressure into the water depth data, and stores them in RAM 8. Then, a judgement is made that the diver is in the diving mode when the information below the specified depth is not detected for the specified period of time, the data on the water depth of RAM 8 are read to calculate the partial pressure of gaseous nitrogen in the inhaled air. Then, the partial pressure of gaseous nitrogen in a plurality of tissues in a human body is calculated for each tissue based on the detected pressure and the partial pressure of gaseous nitrogen. The decompression data are calculated based on the partial pressure of gaseous nitrogen of each tissue, and display them on a display part 15.
Inventors:
Hiroshi Sato
Application Number:
JP16071893A
Publication Date:
June 17, 2002
Filing Date:
June 30, 1993
Export Citation:
Assignee:
CASIO COMPUTER CO.,LTD.
International Classes:
B63C11/02; B63C11/32; G01P3/62; (IPC1-7): B63C11/02
Domestic Patent References:
| JP415191A | ||||
| JP2179584A | ||||
| JP60129687A | ||||
| JP2179594A |
Attorney, Agent or Firm:
Yoshiyuki Ohsuga