JP4175150B2 - Information processing apparatus for divers, control method for information processing apparatus for divers, program, and recording medium - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information processing apparatus for divers, a control method, a control program, and a recording medium.
[Prior art]
Conventionally, as a function of an information processing apparatus for divers (hereinafter referred to as a dive computer), various calculation methods for performing safe diving according to the conditions of the time have been proposed.
For example, Patent Document 1 proposes a method of performing calculation by multiplying a safety factor according to the state of an inert gas in the body. Patent Document 2 proposes a method in which an individual's age, weight, and the like are input, and a calculation is performed by multiplying the value by a safety factor. Further, Patent Document 3 has a function of planning a dive during diving, and a method for dealing with a case where the diving is different from the diving assumed on land is proposed.
[0002]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-23745
[Patent Document 2]
JP 10-338193 A
[Patent Document 3]
JP 2002-240783 A
[0003]
[Problems to be solved by the invention]
These methods are used to ensure safety based on the diving computer's past diving situation, absolute values such as age, weight, etc. It was not possible to realize the function of performing calculations for safe diving by accurately reflecting the individual's empirical and sensory judgments such as the plan to do.
Also, in the above method, it is conceivable that the user intentionally changes the age etc. and inputs it and changes the safety factor to the safe side to ensure safety, but the calculation of the safety factor is complicated, It was not possible to grasp how much the safety factor was changed and how much safety could be secured if the input value was changed.
Moreover, in actual diving, there are not a few cases in which environmental changes suddenly occur after diving is started. Specifically, although the water temperature is high near the sea surface, the water temperature may suddenly become low as you dive. It is also possible that the flow is stronger than expected and the physical strength is consumed.
[0004]
In such a case, it is obvious that it is not always preferable to apply the diving plan simulated on land as it is.
In addition, the invention described in Patent Document 3 merely performs calculations based on the inactive gas concentration in the body based on the history of changes in water depth, and sensory such as water temperature that does not appear in water depth changes, strength of water flow, and fatigue. There was a problem that there was no response at all.
In other words, it is not possible to easily change the sensory safety factor setting considering the physical condition and future behavior of each individual who is a diver. There was a need to do.
[0005]
In addition, when diving is actually started, diving that is not assumed in the prior dining plan may be required. For example, a diver wants to change a predetermined plan in order to see them, such as when there are very rare marine creatures with a small number of individuals or when there is an unexpected shipwreck. Is assumed. However, divers have no way of knowing how the plan changes during diving affect their own safety, which is not preferable from the viewpoint of ensuring safety.
Accordingly, an object of the present invention is to provide information processing for divers that can perform computation while reflecting the sensory judgment of the diver who is the user while ensuring the safety of the diver while diving. An apparatus, a control method for an information processing apparatus for divers, a program, and a recording medium are provided.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problem, the divers information processing apparatus includes a level setting unit for a user to selectively set one of a plurality of safety levels, and a non-decompression diving possible time based on a diving history or a diving schedule. When calculating a safer safety level, there is provided a non-decompressible diving time calculation unit that performs correction to further shorten the no-decompression diving time.
According to the above configuration, the level setting unit selectively sets any one of the plurality of safety levels by the user.
Thus, the no-decompression diving time calculation unit calculates the no-decompression diving time when a safer safety level is selected when calculating the no-decompression diving time based on the diving history or diving schedule. Make corrections to shorten.
[0007]
In this case, the safety level may be set in association with the altitude.
In addition, the safety level may include those associated with an altitude of 0 meter and an altitude of 1000 meters as the altitude.
Furthermore, a dive discrimination unit for discriminating whether or not the dive is in progress, a setting change limiting unit for limiting the setting change to the safety level on the non-safe side with respect to the currently selected safety level during the dive, You may make it provide.
In addition, the control method of the information processing apparatus for divers calculates the non-decompression dive time based on the level setting process for the user to selectively set one of a plurality of safety levels and the diving history or diving schedule. In this case, the present invention is characterized in that it includes a non-decompressible diving time calculation process in which correction is performed to further shorten the no-decompression diving possible time when a safer safety level is selected.
In this case, the safety level may be set in association with the altitude.
Further, a diving determination process for determining whether or not a dive is in progress, and a setting change limiting process for limiting a setting change to the safety level on the non-safe side with respect to the currently selected safety level during the diving, You may make it provide.
[0008]
In addition, a control program for controlling the information processing apparatus for divers by a computer allows the user to selectively set one of a plurality of safety levels, and calculates a no-decompression diving possible time based on a diving history or a diving schedule. In this case, when a safer safety level is selected, correction is performed so as to further shorten the no-decompression diving possible time.
In this case, it may be determined whether or not diving is in progress, and during the diving, setting changes to the safety level on the non-safe side with respect to the currently selected safety level may be restricted.
In addition, the computer-readable recording medium allows the user to selectively set one of a plurality of safety levels, and when calculating the no-decompression dive time based on the diving history or diving schedule, When the level is selected, a control program for controlling the information processing apparatus for divers by a computer is recorded so as to perform correction so as to further shorten the non-decompression diving possible time.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, preferred embodiments of the present invention will be described with reference to the drawings.
[1] Principle
First, the principle of this embodiment will be described prior to detailed description.
FIG. 1 is a diagram illustrating the principle of the embodiment.
The no-decompression diving time is defined as the minimum time to reach the allowable supersaturated nitrogen amount in each body tissue, and the allowable supersaturated nitrogen amount is described as M value in the decompression theory in the US Navy. .
When nitrogen in the body has accumulated beyond this M value, if the pressure around the diver's body suddenly drops due to the diver's rise, etc., the nitrogen will vaporize in the body and cause decompression sickness.
Conversely, if the amount of nitrogen in the body is less than the M value, the possibility of causing decompression sickness is reduced.
[0010]
By the way, in so-called altitude diving, since the altitude is high, the surrounding atmospheric pressure decreases. Specifically, in the vicinity of an altitude of 5500 m, the atmospheric pressure becomes 0.5 atmospheric pressure, which is about half of that in the vicinity of an altitude of 0 m.
For this reason, in high altitude diving, as shown in FIG. 1, the pressure (atmospheric pressure) applied to the body is reduced, and as a result, the M value is set small.
The fact that the M value is actually small means that it is easy to suffer from decompression sickness, but in the calculation of the dive computer, estimating the M value small is synonymous with setting more safely. .
Therefore, in the present embodiment, it is assumed that the calculated no-decompression dive time is diving at a high altitude at a predetermined altitude based on the user's instruction, and apparently the no-decompression diving time is corrected to be reduced more safely. And to ensure the safety of divers.
In other words, the diver's senses (self physical condition, mood, etc.) are reflected through an index that is more easily understood by the diver, such as altitude, to further enhance the safety of the diver.
[0011]
[2] Specific embodiment
[2.1] Appearance structure of dive computer
FIG. 2 is a schematic diagram showing an external configuration when the dive computer 1 according to the present embodiment is viewed from the front.
The dive computer 1 calculates and displays the diver's depth and diving time during diving, and measures the amount of inert gas (mainly nitrogen) accumulated in the body during diving as a partial pressure. In consideration of the contents of the planned diving plan, it is configured to display whether or not the diving is safe.
As shown in FIG. 2, the dive computer 1 has a disk-shaped device body 2 and arm bands 3 and 4 connected in the vertical direction of the drawing, respectively. Used to be used. In the apparatus main body 2, the upper case and the lower case are fixed in a completely watertight state by a screwing method or the like, and various electronic components (not shown) are incorporated.
A display unit 10 having a liquid crystal display panel 11 is provided on the front side of the apparatus body 2 in the drawing, and an operation unit 5 for selecting / switching various operation modes in the dive computer 1 is formed on the lower side of the drawing. Yes. The operation unit 5 includes two switches A and B in a push button format.
[0012]
A diving operation monitoring switch 30 using a continuity sensor used to determine whether or not diving has been started is provided on the left side of the apparatus main body 2 in the drawing. The diving operation monitoring switch 30 includes electrodes 31 and 32 provided on the front side of the apparatus main body 2 in the drawing, and the resistance between the electrodes 31 and 32 is established between the electrodes 31 and 32 by seawater or the like. It is determined that the water has entered when the value becomes smaller. However, the diving operation monitoring switch 30 is only used for detecting that water has entered and for shifting the operation mode of the dive computer 1 to the diving mode, and detects that diving has actually started. Is not used for That is, there are cases where the arm of the diver wearing the dive computer 1 has just been immersed in seawater, and it is not preferable to determine that diving has started in such a state. For this reason, in this dive computer 1, the water pressure (water depth) is not less than a certain value by the pressure sensor built in the apparatus main body 2, more specifically, the water pressure is not less than 1.5 [m] equivalent to the water depth. In this case, it is considered that the dive has started, and when the water pressure is less than 1.5 [m] at the water depth, it is considered that the dive has been completed.
[0013]
Next, the configuration of the display unit 10 described above will be described in detail. As shown in FIG. 2, the display area of the liquid crystal display panel 11 includes a display area 11A located in the center. The display area 11 </ b> A is composed of a first display area 111 to a seventh display area 117. In the present embodiment, an example in which the display area 11A is circular has been described. However, the display area is not limited to a circular shape, and may be another shape such as an elliptical shape, a track shape, or a polygonal shape.
Of the display areas 11A, the first display area 111 located on the upper left side of the drawing is configured to be the largest among the display areas 111 to 117. In this display area 111, the current water depth, current date, water depth rank, diving date (or log number), and planned water depth are displayed in the diving mode, surface mode, planning mode, log mode, and in-dive planning mode, respectively. It has come to be.
Next, the second display area 112 is located on the right side of the first display area 111 in the drawing. The second display area 112 includes a dive time, a current mode, a no-decompression dive time, a dive start time (or a dive time), respectively, in the dive mode, surface mode, planning mode, log mode, and planning mode during diving. The dive time is displayed.
[0014]
Next, the third display area 113 is located below the first display area 111 in the drawing. In the third display area 113, the maximum water depth, body nitrogen discharge time, safety level, and maximum water depth (or average water depth) are displayed in the diving mode, surface mode, planning mode, and log mode, respectively. ing.
Next, the fourth display area 114 is located on the right side of the third display area 113 in the drawing. In the fourth display area 114, in the diving mode, the surface mode, the planning mode, the log mode, and the planning mode during the diving, the no-decompression dive time, the water surface pause time, the temperature, the diving end time (or the maximum water temperature at the depth of the water) ), No-decompression diving time is displayed.
Next, the fifth display area 115 is located below the third display area 113 in the drawing. The fifth display area 115 includes a power capacity out warning display area 104 for displaying power capacity out, and an altitude rank display area 103 for displaying the altitude at the location where the diver is located by rank.
The sixth display area 116 is located on the lower left side of the drawing in the display area 11A. In the sixth display area 116, the amount of nitrogen remaining in the diver's body (hereinafter referred to as body nitrogen amount) is displayed in a graph.
[0015]
The seventh display area 117 is located on the right side of the sixth display area 116 in the drawing. The seventh display area 117 is an area indicating whether nitrogen tends to be absorbed or discharged when a diving mode is entered in the diving mode (up and down arrows are shown in the figure). And an area for displaying “SLOW” for instructing deceleration as one of the ascent warnings when the ascent speed is too high, and “DECO” for warning that decompression diving must be performed during diving. And an area for displaying.
[0016]
[2.2] Dive computer electrical configuration
FIG. 3 is a block diagram of the electrical configuration of the dive computer.
Next, the electrical configuration of the dive computer 1 will be described with reference to FIG. As shown in FIG. 3, the dive computer 1 is roughly divided into an operation unit 5 for performing various operations, a display unit 10 for displaying various types of information, a diving operation monitoring switch 30, an alarm sound from a buzzer, etc. A sound generating device 37 for performing a vibration, a vibration generating device 38 for informing a diver by vibration, a control unit 50 for controlling the entire dive computer 1, a pressure measuring unit 61 for measuring atmospheric pressure or water pressure, and various timing processes. A timer unit 68 is provided.
The display unit 10 includes a liquid crystal display panel 11 for displaying various information and a liquid crystal driver 12 for driving the liquid crystal display panel 11.
[0017]
The control unit 50 is connected to the operation unit 5, the diving operation monitoring switch 30, the sound reporting device 37, and the vibration generating device 38. The control unit 50 controls the liquid crystal display panel 11 in order to cause the liquid crystal display panel 11 to perform display corresponding to each operation mode under the control of the CPU 51 and the time counter 33 described later. A control circuit 52 that performs processing in each operation mode, a ROM 53 that stores a control program and control data, and a RAM 54 that temporarily stores various data are provided. The CPU 51 reads out a control program and control data from the ROM 53 and executes processing in each operation mode.
[0018]
In the dive computer 1, it is necessary to measure and display the water depth itself and notify the diver, and it is necessary to measure the amount of nitrogen gas accumulated in the diver's body from the water depth (water pressure) and the diving time. For this reason, the pressure measuring unit 61 measures the atmospheric pressure and the water pressure. The pressure measuring unit 61 performs a pressure sensor 34 constituted by a semiconductor pressure sensor, an amplification circuit 35 for amplifying the output signal of the pressure sensor 34, and analog / digital conversion of the output signal of the amplification circuit 35, And an A / D conversion circuit 36 that outputs to the control unit 50.
In the dive computer 1, the time measuring unit 68 outputs a clock signal having a predetermined frequency and divides the clock signal from the oscillation circuit 31 in order to measure the normal time and monitor the dive time. And a time counter 33 that performs time-counting processing in units of one second based on the output signal of the frequency dividing circuit 32.
[0019]
[2.3] Functional configuration of dive computer
FIG. 4 is a functional block diagram of the dive computer.
Next, the functional configuration for calculating the amount of nitrogen accumulated in the diver in the dive computer 1 will be described with reference to FIG.
As shown in FIG. 4, in addition to the pressure measuring unit 61, the time measuring unit 68, and the display unit 10 described above, the dive computer 1 calculates a body nitrogen amount calculating unit 70, a body nitrogen draining time calculating unit 77, and a non-decompressible diving time calculation. A portion 78 is provided. The body nitrogen amount calculating unit 70, the body nitrogen discharge time calculating unit 77, and the non-decompressible dive time calculating unit 78 can be realized by software executed by the CPU 51, the ROM 53, and the RAM 54 shown in FIG. However, the present invention is not limited to this, and it is also possible to realize only a logic circuit that is hardware, or a combination of a logic circuit, a processing circuit including a CPU, and software.
[0020]
The in-body nitrogen amount calculation unit 70 is configured to calculate the partial pressure of nitrogen accumulated in the diver's body (hereinafter referred to as in-body nitrogen partial pressure) based on the execution diving already executed by the diver. This body nitrogen amount calculation unit 70 includes a respiratory air nitrogen partial pressure calculation unit 71, a respiratory air nitrogen partial pressure storage unit 72, a body nitrogen partial pressure calculation unit 73, a half-saturation time selection unit 74, a comparison unit 75, and a body nitrogen partial pressure. The calculation unit 76 is included. The no-decompression dive time calculation unit 78 calculates a time during which no diving can be performed by the diver (hereinafter referred to as “no-decompression dive time”) based on the in-vivo nitrogen partial pressure obtained by the in-vivo nitrogen calculation unit 70. To do. In addition, the body nitrogen discharge time calculation unit 77 is based on the body nitrogen partial pressure obtained by the body nitrogen calculation unit 70, and the time until the nitrogen remaining in the diver body is discharged after the surface floats (hereinafter referred to as the body nitrogen discharge). (Referred to as nitrogen discharge time).
[0021]
[2.4] Calculation method of nitrogen partial pressure in the body
Here, a method for calculating the nitrogen partial pressure in the body will be described with reference to FIG. Regarding the calculation method for the partial pressure of nitrogen in the dive computer 1 according to the present embodiment, for example, “DIVE COMPUTERS A CONSUMER'S GUIDE TO HISTORY, THEORY & PERFORMANCE” by KEN LOYST et al., Watersport Publishing Inc. (1991), "Decompression-Decompression Sickness" by AABuhlmann (especially page 14), Springer, Berlin (1984). In addition, the calculation method of the nitrogen partial pressure shown here is only an example, and various other methods can be used.
In this configuration example, first, the pressure measurement unit 61 outputs the water pressure P (t) corresponding to the time t. Here, P (t) means absolute pressure including atmospheric pressure. Based on the water pressure P (t) output from the pressure measurement unit 61, the respiratory air nitrogen partial pressure calculator 71 calculates the partial pressure of nitrogen in the air that the diver is breathing (hereinafter referred to as respiratory air nitrogen partial pressure PIN2 (t ) Is calculated and output. Here, the respiratory nitrogen partial pressure PIN2 (t) is calculated by the following formula using the water pressure P (t).
PIN2 (t) = 0.79 × P (t) [bar]...
[0022]
Note that “0.79” in the equation is a numerical value indicating the ratio of nitrogen in the air. The respiratory air nitrogen partial pressure storage unit 72 stores the value of the respiratory air nitrogen partial pressure PIN2 (t) calculated by the respiratory air nitrogen partial pressure calculation unit 71 according to the equation.
The body nitrogen partial pressure calculation unit 73 calculates the body nitrogen partial pressure for each body tissue having different nitrogen absorption / extraction rates. For example, taking one tissue as an example, the in-vivo nitrogen partial pressure PGT (tE) absorbed / extracted by the dive time t = t0 to tE is the in-body nitrogen partial pressure PGT (t0 at the start of calculation (= t0 time)). ) As follows:
PGT (tE) = PGT (t0) + {PIN2 (t0) -PGT (t0)} * {1-exp (-K (tE-t0) / HT)}
[0023]
Here, K is a constant obtained experimentally, and HT is the time required for nitrogen to dissolve in each tissue and reach half of the saturated state (hereinafter referred to as half-saturation time). is there.
This half-saturation time HT becomes variable according to the magnitude of PGT (t0) and PIN2 (t0), as will be described later. Note that the measurement of time such as time t0 and time tE is managed by the time measuring unit 68 shown in FIG. The in-vivo nitrogen amount calculation unit 70 repeatedly performs the calculation of the in-vivo nitrogen partial pressure PGT (t) as described above at a predetermined sampling period tE. At this time, the in-vivo nitrogen partial pressure PGT (tE) calculated for each sampling cycle by the equation is supplied to the in-body nitrogen discharge time calculating unit 77 and the no-decompression diving possible time calculating unit 78, and the comparing unit 75 and in-body nitrogen It is supplied to the partial pressure calculation unit 73 as PGT (t0). This means that PGT (tE) at the previous sampling is used as PGT (t0) in the equation.
[0024]
Prior to the above calculation, the comparison unit 75 calculates the respiratory nitrogen partial pressure PIN2 (t0) stored in the respiratory nitrogen partial pressure storage unit 72 and the PGT (t0) supplied from the body nitrogen partial pressure storage unit 74. ) And the comparison result is output to the half-saturation time selector 74. The half-saturation time selection unit 74 stores two types of half-saturation times HT (half-saturation times HT1 and HT2 described later) that the in-vivo nitrogen partial pressure calculation unit 73 should use for partial pressure calculation. The half-saturation time HT1 or HT2 is selected according to the above and is output to the nitrogen partial pressure calculation unit 73 in the body.
The body nitrogen partial pressure calculation unit 73 uses the half saturation time HT1 or HT2 selected by the half saturation time selection unit 74 to calculate the body nitrogen partial pressure PGT (tE) at time t = tE by the following equation. .
(1) When PGT (t0)> PIN2 (t0)
PGT (tE) = PGT (t0) + {PIN2 (t0) -PGT (t0)} × {1-exp (-K (tE-t0) / HT1)}
(2) When PGT (t0) <PIN2 (t0)
PGT (tE) = PGT (t0) + {PIN2 (t0) −PGT (t0)} × {1-exp (−K (tE−t0) / HT2)}... HT2 <HT1.
[0025]
Here, the reason why the half-saturation time HT is different between PGT (t0)> PIN2 (t0) and PGT (t0) <PIN2 (t0) will be described.
First, when PGT (t0)> PIN2 (t0), nitrogen is discharged from the body. Conversely, when PGT (t0) <PIN2 (t0), nitrogen is absorbed into the body. is there. That is, in order to calculate nitrogen discharge as time consuming compared to nitrogen absorption, the half-saturation time HT1 when nitrogen is discharged is set longer than the half-saturation time HT2 when nitrogen is absorbed. . Thus, by using different half-saturation times HT at the time of excretion and absorption, it is possible to more safely simulate the amount of nitrogen in the body. The body nitrogen amount calculation unit 70 can obtain the latest body nitrogen partial pressure for the diver who is diving by calculating the body nitrogen partial pressure PGT (t) as described above.
[0026]
[2.5] Calculation method when no decompression diving is possible
Based on the in-vivo nitrogen partial pressure PGT (tE) obtained as described above and the respiratory air nitrogen partial pressure PIN2 (tE) at t = tE calculated by the respiratory air nitrogen partial pressure calculation unit 71 The decompression dive possible time is calculated as follows. The no-decompression dive possible time is calculated by obtaining (tE-t0) when the PGT (tE) calculated in the equation becomes an M value indicating the allowable supersaturated nitrogen amount of each tissue.
Therefore, in the present embodiment, the M value (= corresponding to the safety level) used for the calculation is set to a safer side according to the instruction input of the user operation unit 5 (level setting unit), that is, the M value is smaller. Is set.
Specifically, a value M0 corresponding to the atmospheric pressure in the vicinity of the altitude of 0 m and a value M1 corresponding to the atmospheric pressure in the vicinity of the altitude of 1000 m are stored in advance as the M value (M1 <M0).
And when the diver who is a user wants to improve safety for sensory reasons such as physical condition and mood, instead of using the value M0 in the vicinity of the altitude of 0 m, the value M1 in the vicinity of the altitude of 1000 m should be used. Input an instruction to instruct.
[0027]
This instruction input is also permitted to change the M value from the value M1 to the value M0 during non-diving, that is, on land, based on the output of the diving operation monitoring switch 30 (which constitutes the diving determination unit). However, from the viewpoint of safety, during diving, that is, underwater, the change from the M value M1 to the value M0 (non-safe side) is restricted so as not to be permitted (functions as a setting change restriction unit). Of course, it is possible to change the setting to the safe side underwater when the diver feels that the water temperature has dropped or the physical strength has been exhausted after starting diving. That is, the M value can be changed from the value M0 to the value M1 (safe side).
In the actual calculation of the no-decompression diving time, since the present time is considered to be t0, the in-vivo nitrogen partial pressure PGT (tE) obtained by the in-body nitrogen amount calculation unit 60 is used as PGT (t0) in the equation, and PIN2 As (t0), the respiratory nitrogen partial pressure PIN2 (tE) calculated by the respiratory nitrogen partial pressure calculator 62 is used. That is,
tE−t0 = −HT × (ln (1-f)) / K
[0028]
However,
f = (M value of tissue−PGT (t0)) / (PIN2 (t0) −PGT (t0))
It is. Here, as the M value of the tissue, one of the value M0 around the elevation of 0 m of the organization and the value M1 around the elevation of 1000 m is selected, and the same M value around the elevation is used in all the organizations. ing.
By the above formula, all the decompression-free diving time in each tissue is calculated, and the smallest value among them is the no-decompression diving time to be obtained. The no-decompression dive possible time calculated in this way is displayed in the diving mode and the planning mode during diving.
As described above, according to the dive computer of the present embodiment, the decompression-free dive time calculated by intuitively reflecting the sense (physical condition, mood), etc. of the diver who is the user can be on the safe side. Therefore, the safety of the diver can be easily improved.
In addition, it is possible to provide information immediately in response to environmental changes during diving that cannot be known without actually diving such as the water temperature and the strength of the water flow.
[0029]
[3] Modification of embodiment
[3.1] First modification
In the above description, as a selectable M value, either the value M0 corresponding to the atmospheric pressure in the vicinity of the altitude of 0 m or the value M1 corresponding to the atmospheric pressure in the vicinity of the altitude of 1000 m is selected. It is also possible to select one or a plurality of intermediate values of the value M1, that is, M values of intermediate elevations. Furthermore, for example, it is also possible to configure so that an M value on the safe side can be selected from an M value near an altitude of 2000 m. Furthermore, not only the altitude of 1000 m, but also a value corresponding to the atmospheric pressure at an arbitrary altitude defined as altitude diving can be used.
[3.2] Second modification
In the above description, nitrogen is assumed as the inert gas. However, the present invention is not limited to this, and other gases such as helium may be used.
[0030]
[3.3] Third Modification
In the above description, it is assumed that the programs for performing the various operations described above are stored in the ROM 53 in advance. However, the dive computer 1 is communicably connected to an external computer (not shown) via a network or cable. The control program may be downloaded from the external computer to the dive computer 1. In this case, the program is stored in a rewritable nonvolatile memory (not shown) in the dive computer 1. And CPU51 should just read a program from this non-volatile memory, and may perform this.
[0031]
【The invention's effect】
According to the present invention, it is possible to perform calculations while ensuring the safety of a diver and reflecting the sense of a diver who is a user.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating the principle of an embodiment.
FIG. 2 is a schematic diagram illustrating an external configuration when the dive computer according to the embodiment is viewed from the front.
FIG. 3 is an electrical configuration block diagram of a dive computer.
FIG. 4 is a functional configuration block diagram of a dive computer.
[Explanation of symbols]
1 ... Dive computer (divers information processing device)
5. Operation unit (level setting unit)
10 ... Display section
30 ... Diving operation monitoring switch (diving discrimination part)
37 ... Reporting device
38 ... Vibration generator
50 ... Control unit (no decompression dive possible time calculation unit
Diving discrimination part, setting change restriction part)
61 ... Pressure measuring section
68 ... Timekeeping section
70: Nitrogen amount calculation part in the body (no decompression dive possible time calculation part)
M0 ... M value (safety level)
M1 ... M value (safety level)

Claims (7)

A safety level setting unit for the user to selectively set any one of the safety levels among a plurality of safety levels associated with atmospheric pressure values corresponding to the altitude, and the safety level setting unit when not diving. If the safety level selected by the user is safer than the safety level corresponding to the atmospheric pressure value corresponding to the lowest altitude among the plurality of safety levels, the no-decompression diving is based on the diving history or diving schedule. When calculating the possible time, the safety level selected by the user is used to calculate the time required for the no-decompression diving to be shortened. On the other hand, if the user does not set the safety level, the diving history or the diving schedule is set. the no-decompression dive friendly with upon, the safety level corresponding to the pressure value corresponding to the lowest elevation calculating the pre-Symbol non-decompression dive time based Diver's information processing device, characterized in that it and a non-decompression dive time calculation unit for calculating a time. 2. The divers information processing apparatus according to claim 1, wherein when the diving discriminating unit discriminates whether the dive is in a dive or not diving, and the diving discriminating unit is in a dive, it is currently selected. An information processing apparatus for divers, comprising: a setting change restriction unit that restricts a setting change to a non-safe side level with respect to the safety level. Among a plurality of safety levels associated with the pressure value corresponding to the altitude, respectively, and level setting process for a user to selectively set one of the safety level, during the non-dive, the user by the level setting process If the safety level selected by is on the safe side from the safety level corresponding to the atmospheric pressure value corresponding to the lowest altitude among the plurality of safety levels, the no-decompression diving possible time based on the diving history or diving schedule Is calculated to further reduce the non-decompression diving possible time using the safety level selected by the user, while if the user does not set the safety level, based on the diving history or the diving schedule. wherein upon calculating a non-decompression dive time, the safety level the non-decompression dive time by using the corresponding to pressure values corresponding to the lowest elevation The method of non-decompression dive time calculation process, diver's information processing apparatus characterized by having a calculated. 4. The control method of the information processing apparatus for divers according to claim 3, wherein a diving discrimination process for discriminating whether the diving is in progress or a non-dive, and a current selection when it is determined that the diving discrimination process is in a dive. A control method for a divers information processing apparatus, comprising: a setting change restriction process for restricting a setting change to a non-safe side level with respect to the safety level. In a control program for controlling the information processing apparatus for divers by a computer, the user selectively sets any one of the safety levels out of a plurality of safety levels associated with atmospheric pressure values corresponding to altitudes, When the safety level selected by the user at the time of setting the safety level is non-diving and is safer than the safety level corresponding to the atmospheric pressure value corresponding to the lowest altitude among the plurality of safety levels, When calculating the no-decompression diving possible time based on the diving schedule, while calculating to further reduce the no-decompression diving possible time using the safety level selected by the user, when the user does not set the safety level When calculating the no-decompression dive time based on the diving history or diving schedule, Calculating the non-decompression dive time using the safety level corresponding to the pressure value, the control program, characterized in that. 6. The control program according to claim 5, wherein when it is determined that the vehicle is diving or not diving and it is determined that diving is being performed, the setting change to the non-safe side with respect to the currently selected safety level. A control program characterized by restricting. Of the plurality of safety levels associated with the atmospheric pressure values corresponding to the altitude, the user selectively sets one of the safety levels, and the safety level selected by the user at the time of setting the safety level is non-diving. Sometimes, when the safety level is higher than the safety level corresponding to the atmospheric pressure value corresponding to the lowest altitude among the plurality of safety levels, the user can calculate the no-decompression dive time based on the diving history or the diving schedule. If the user does not set the safety level, the no-decompression diving time is calculated based on the diving history or diving schedule. When calculating, the diver is required to calculate the time for diving with no decompression using the safety level corresponding to the atmospheric pressure value corresponding to the lowest altitude. Computer-readable recording medium characterized by recording a control program for controlling the's information processing apparatus by a computer.

Images