JP3520397B2 - Divers information processing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing device for divers, which is also called a dive computer. More specifically, in such an information processing apparatus, it relates to a technique for deriving safety information for a diver to safely dive, based on the amount of accumulated inactive gas in the body that is excessively dissolved in the body. .

[0002]

2. Description of the Related Art A method of calculating decompression conditions after diving performed in an information processing device for divers called a dive computer is described in "DIVE COMPUTERS A CONSUMER'S GUIDE TO HISTORY," written by KEN LOYST et al.
THEORY & PERFORMANCE '''Watersport Publishing Inc.
(1991). Also, as a literature on the theory, see “Decompression-Deco
mpression Sickness ", Springer, Berlin (1984). In all of these documents, it is suggested that inert gas such as nitrogen in the inhaled air, which is dissolved in the body by diving, may become bubbles in the body and cause decompression sickness. Here, from the perspective of more reliably preventing decompression sickness, AA Buhlmann's “Decompression-Decompression
Sickness ”, Springer, Berlin (1984), pp.14.

[0003]

[Equation 1]

In this equation, PIig is the inert gas partial pressure of respiratory air, and k is a constant determined by the half-saturation time.

According to this equation, Pigt (t ₀ ) <PI
When ig, the internal inert gas partial pressure Pigt (t _E ) increases, that is, the inert gas is absorbed, and Pigt (t ₀ )>
When PIig, partial pressure of inert gas in the body Pigt (t _E ).
Will be reduced, that is, the inert gas will be discharged.

That is, the absorption / exhaust of the inert gas into the body is determined by the magnitude relationship between the partial pressure of the inert gas in the body and the inert gas in the respiratory air, regardless of the ascent and descent.

Therefore, in the information processing apparatus for divers,
The amount of accumulated inert gas in the body is grasped from this magnitude relationship, and the time required for the amount of inert gas in the body to return to the normal state after the end of diving (body inert gas discharge time) or the current inert gas in the body The diver is protected from decompression sickness by informing the diver of the time when no decompression diving can be performed (jumpless diving possible time) from the accumulated amount. Here, in the conventional information processing device for divers, regardless of the diving history up to that point, the amount of accumulated inert gas in the body is calculated from the water pressure and the dive time using a certain algorithm, and the calculated result is used as it is. The active gas discharge time and the non-decompression dive time are derived.

[0008]

However, since the inert gas may be accumulated and discharged in the body under the influence of not only the water pressure and the dive time but also the fatigue degree of the diver, it is considered that the inert gas in the body does not exist. The active gas discharge time and the non-decompression dive time should also be notified as information corresponding to the dive history. However, in the conventional information processing device for divers, regardless of the dive history, for example, when the dive is started this time, regardless of whether or not the inert gas excessively dissolved in the body at the previous dive still remains. By simulating the amount of accumulated inactive gas in the body by a certain algorithm and deriving the inactive gas discharge time in the body and the no-decompression diving time, when the diver does not notice fatigue and dives again, Has a problem in that it cannot reliably protect the diver from decompression sickness and other dangers.

In view of the above problems, the object of the present invention is to
It is to provide an information processing device for divers capable of more reliably protecting the diver from decompression sickness and other dangers, by making the safety information notified by the diver to safely dive, the contents adapted to the past diving history. .

[0010]

In order to solve the above-mentioned problems, in an information processing apparatus for divers according to the present invention, a water pressure measuring means for measuring water pressure and a time measuring means for measuring the elapsed time during diving and water surface rest. And the amount of accumulated inactive gas in the body, which is excessively accumulated in the body due to diving, is calculated based on the measurement result of the time measuring means and the measurement result of the water pressure measuring means, and the diver is safe to dive based on the calculation result. Safety information deriving means for deriving safety information for performing
The safety information deriving means includes an information correcting means for correcting the safety information derived from the safety information deriving means, and an informing means for informing a diver of the safety information corrected by the information correcting means. The information correction means
Is based on the dive history information up to the previous time when this dive starts.
The level of accumulated amount of inert gas in the body is judged and the judgment is made.
The safety information deriving means guides a predetermined correction corresponding to the result.
It is configured to apply to the safety information issued.
It is characterized by

[0011]

According to the present invention, at the start of this dive,
Level of inert gas accumulation in the body based on diving history information
Of the safety information.
It is applied to the safety information derived by the derivation means. Then, not only the water pressure and the dive time but also the diver's dive history is taken into consideration to notify the safety information. For example, whether the dive to be performed this time is the first dive (diving from a state where excess inert gas does not remain in the body) or repeated diving (diving from a state where excess inert gas remains in the body). I mean,
Furthermore, even for the same repetitive dive, the safety information notified by the diver in order to carry out a safe dive is changed depending on the amount of the inert gas remaining in the body excessively. Therefore, even if the diver does not notice fatigue and tries to dive again, the diver can be surely protected from decompression sickness and other dangers.

[0013] In this case, the information correction means, said plant
Before calculation by the safety information derivation means in order to make a certain correction
In some cases, it may be configured to correct the amount of inactive gas accumulated in the storage unit .

In the present invention, the safety information deriving means is configured to consider that excess inert gas is not discharged from the body for a predetermined time after the diver starts resting on the water surface. It is preferable. That is,
It is assumed that exhaustion of the inert gas from the body is slow during the short period after rest and the exhaust rate of the inert gas from the body is slow, and no inert gas is discharged outside the body during the rest period, and the amount of the inert gas in the body is constant. Consider it. Therefore, even if the diver makes a short break of about 10 minutes and then continues to dive, the amount of inert gas in the body will be increased by the amount that should have been discharged during the break period, so Can be more reliably protected from the danger of. In addition, the present invention, the water pressure
Water pressure measuring means to measure and when diving and when the water surface is at rest
Time measuring means for measuring the elapsed time and the measurement results of the time measuring means.
And diving based on the measurement result of the water pressure measuring means.
The amount of inert gas accumulated in the body
The diver calculates a safe dive based on the calculation result.
Safety information deriving means for deriving safety information for performing,
For the safety information derived by the safety information derivation means
Information correction means to make corrections corresponding to the dive history up to
Divers the safety information corrected by the information correction means
And a safety information deriving means.
At the specified time after the diver started to rest on the surface of the water
For the time being, it is assumed that excess inert gas will not be discharged from the body.
It is configured to change.

In the present invention, the notifying means may be, for example, the amount of the inert gas in the body, the amount of the inert gas that has been excessively dissolved in the body during rest on the water surface, and the inert gas in the body until the equilibrium state is reached. At least one of the active gas discharge time and the non-decompressible dive possible time corresponding to the amount of the inert gas dissolved in the body excessively is notified as the safety information.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The best mode of the present invention will be described below with reference to the drawings.

[Overall Configuration] FIGS. 1A and 1B are a plan view showing a device body and a part of an arm band of the information processing device for divers of the present embodiment, and the device body from 6 o'clock, respectively. It is a side view when seeing. FIG. 2 is a block diagram thereof.

In FIG. 1, the information processing apparatus 1 for divers of this embodiment is also called a so-called dive computer, and measures the amount of nitrogen accumulated in the body during diving (nitrogen partial pressure in the body), and measures this. Based on the results, the rest time to be taken on land after diving is displayed. In this diver's information processing device 1, arm bands 3 and 4 are connected to a rectangular device body 2 at a 6 o'clock side and a 12 o'clock side of a wristwatch, respectively.
4 allows it to be worn on a wrist and used like a wristwatch. In the device body 2, an upper case 21 and a lower case 22 are fixed in a completely watertight state by a method such as screwing, and a board (not shown) on which various electronic components are mounted is housed inside. ing.

A display unit 10 using a liquid crystal display panel 11 is formed on the upper surface side of the apparatus main body 2, and switches A and B composed of two push buttons are formed on the wristwatch at 6 o'clock. There is. Therefore, the switch operation is easy even during diving. Here, the switches A and B are
As will be described later, it is an operation unit 5 for selecting and switching each mode performed in the divers information processing apparatus 1. On the side of the upper surface of the apparatus main body 2 at 9 o'clock in the wristwatch, a water entry monitoring switch 30 using a moisture detection sensor for monitoring whether or not diving is started is configured. This water entering monitoring switch 30 is provided with two electrodes 31, 32 exposed on the upper surface of the main body of the apparatus, and these electrodes 31, 32 are conducted by seawater or the like, and the resistance value between the electrodes 31, 32 is reduced. Sometimes it is judged that the dive has started. However, the water entry monitoring switch 30 is used only for detecting that water has entered and for shifting to a diving mode, which will be described later, and does not detect that one tying has started. That is, the arm on which the information processing apparatus 1 for divers is worn may be simply immersed in seawater, and in such a case, it should not be treated as having started diving. Therefore, in the diver's information processing device 1 of the present embodiment, the water depth (water pressure) is not less than a certain level, for example,
In this embodiment, it is considered that the dive has started when the water depth is deeper than 1.5 m, and it is considered that the dive has ended when the water depth becomes shallower than this water depth value.

As shown in FIG. 2, the diver's information processing apparatus 1 of the present embodiment comprises a liquid crystal display panel 11 for displaying various kinds of information to notify the user, and a liquid crystal driver 12 for driving the same. Display unit 10 (informing means)
And a control unit 50 that performs processing in each mode and causes the liquid crystal display panel 11 to perform display according to each mode. For the control unit 50, the switch A,
B, and water ingress monitoring switch 3 using a moisture detection sensor
The output from 0 is input.

In the divers information processing apparatus 1, since the normal time is displayed and the diving time is measured, the control unit 50
In contrast, the clock output from the oscillation circuit 31 is input through the frequency dividing circuit 32, and the time counter 33 is configured as a time measuring unit 68 that measures time in units of 1 second.

The diver's information processing apparatus 1 measures and displays the water depth and measures the amount of nitrogen gas (inert gas) accumulated in the body from the water depth (water pressure) and the diving time. From the pressure sensor 34 (semiconductor pressure sensor), an amplifier circuit 35 for the output signal of the pressure sensor 34, and an A / D that converts the analog signal output from the amplifier circuit 35 into a digital signal and outputs the digital signal to the control unit 50. A water depth measuring means 61 (water pressure measuring means) including the conversion circuit 36 is configured. Further, the information processing device 1 for divers is provided with a sounding device 37 and a vibration generating device 38, which can inform the diver of a warning or the like as an alarm sound or vibration.

In the present embodiment, the control unit 50 includes a CPU 51 which controls the entire apparatus and a control circuit 52 which controls the liquid crystal driver 12 and the time counter 33 under the control of the CPU 51, and is stored in the ROM 53. Each mode described below is realized by each process performed by the CPU 51 based on the executed program.

[Structure for monitoring the ascending speed] The diver's information processing apparatus 1 has a
Ascending speed monitoring means for observing the ascending speed of the diver and deriving whether or not it is appropriate as safety information for the diver is constituted, and this means is the CPU 51, ROM 53, RAM.
It is realized as the following configuration using functions such as 54.

That is, as shown in FIG. 3, in the information processing apparatus 1 for divers, the levitation speed measurement for measuring the levitation speed during levitation based on the measurement result of the time measuring means 68 and the measurement result of the water depth measuring means 61. The means 75 and the measurement result of the levitation speed measuring means 75 are compared with a preset levitation speed allowable value 76. If the current levitation speed is faster than the levitation speed allowable value 76, it is determined that the levitation speed is violated. The ascending speed violation determining means 77 is configured. The floating speed measuring means 75 is the CPU 51 and the ROM 5 shown in FIG.
3 is realized as a calculation function of the RAM 54, the flying speed violation determining means 77 is also implemented by the CPU 51, R shown in FIG.
The sound generator 37 and the vibration generator 3 are realized by the OM 53, the RAM 54, and the like, and serve as means for notifying the determination result.
8. Functions such as display on the liquid crystal display panel 11 are used.

In this embodiment, the ascending speed violation determining means 7
Reference numeral 7 compares the floating speed allowable value for each depth range stored in the ROM 53 as the floating speed allowable value 76 with the current floating speed, and the current floating speed corresponds to the current water depth. If it is faster, the liquid crystal display panel 11
Is displayed, an alarm sound is generated from the sound output device 37, and vibration is transmitted from the vibration generator 38 to the diver to warn the ascending speed, and the ascending speed becomes slower than the allowable ascending speed value. Stop the ascending speed warning when returning.

The diver's information processing device 1 includes:
One dive operation from when the water depth value measured by the water depth measuring means 61 becomes deeper than 1.5 m (water depth value for judging dive start) to when it becomes shallower than 1.5 m (water depth value for dive end judgment). Dive results during this time (diving date,
Various data such as dive time and maximum water depth)
The dive result recording means 78 for storing and holding the dive result recording means 78 is configured, and this dive result recording means 78 is also the CPU shown in FIG.
It is realized as a function of 51, ROM 53, and RAM 54. Here, the diving result recording means 78 has a flying speed violation when the ascending speed violation determining means 77 issues a plurality of warnings in succession in one dive, for example, two or more warnings in succession. Is recorded as a diving result, and when a past diving result is reproduced and displayed in a log mode which will be described later, the fact that the ascent speed is violated during diving is reproduced and displayed.

[Description of Display Unit] Referring again to FIG. 1A, the display surface of the liquid crystal display panel 11 has eight display regions. As will be described later in detail, of these eight display areas, the first display area 111 located on the 12 o'clock side of the wristwatch is the largest of the respective display areas, and there is a diving mode described later. , Surface mode (time mode), planning mode, log mode, current depth, current month, date, depth rank,
The dive date (log number) is displayed. The second display area 112 located at the 3 o'clock side of the first display area 111
Displays the dive time, the current time, the no-decompression dive time, and the dive start time (diving time) in the diving mode, the surface mode (time mode), the planning mode, and the log mode, respectively. First display area 111
In the third display area 113 located on the side of 6 o'clock, the maximum water depth, the nitrogen discharge time in the body, the safety level, and the maximum water depth (diving mode, surface mode (time mode), planning mode, and log mode ( Average water depth) is displayed. The fourth display area 114, which is located at 3 o'clock from the third display area 113, has a non-decompressible dive time and a water surface pause in the diving mode, the surface mode (time mode), the planning mode, and the log mode, respectively. The time, temperature, and end time of diving (water temperature at maximum water depth) are displayed. 6 from the third display area 113
In the fifth display area 115 located on the hour side, the power capacity exhaustion warning 104 and the high altitude rank 103 are displayed. In the sixth display area 116 located on the most 6 o'clock side of the liquid crystal display panel 11, the amount of nitrogen in the body is displayed as a graph. Also,
The seventh display area 117, which is located at the 3 o'clock side of the sixth display area 116, shows whether nitrogen (inert gas) tends to be absorbed or not when the decompression diving state is set in the diving mode. Display an area that indicates whether there is a floating speed, an area that displays "SLOW" as one of the ascending speed violation warnings that the ascending speed is too high, and a "DECO" that is a warning that the decompression dive has been reached during the dive. The area is configured.

As described above, since the area for displaying the current water depth (first display area 111) is secured the largest on the display surface of the liquid crystal display panel 11 in the diving mode, the diver is the important data. It is easy to see the current depth display. Moreover, since the display surface of the liquid crystal display panel 11 is recessed from the upper surface of the upper case 21, even if there is a step around the display surface of the liquid crystal display panel 11 due to the upper case 21, the current water depth in the diving mode is Since the display area (first display area 111) is arranged on the 12:00 side, the display of the current water depth is not hidden by the step. Therefore, also from this point, in the information processing apparatus 1 for divers of the present embodiment, it is easy to visually recognize the display of the current water depth which is important data.

[Structure of Safety Information Derivation Means] FIG. 4 shows the calculation of the amount of accumulated nitrogen in the body (the amount of accumulated inert gas in the body) in the information processing apparatus 1 for divers of the present embodiment, and the discharge of nitrogen in the body based on the result. It is a functional block diagram for explaining safety information derivation means for deriving safety information such as time and decompression diving available time.

As shown in FIG. 4, the diver's information processing apparatus 1 simulates how the nitrogen contained in the intake air is absorbed and discharged into the body, and the amount of nitrogen in the body ((nitrogen content in the body Safety information derivation means 60 for calculating pressure)
The safety information derivation means 60 determines how many hours of non-decompression diving can be performed at a certain water depth based on the amount of nitrogen in the body ((no decompression diving possible time), and excessively dissolved into the body by the previous diving. It is configured to derive how much time nitrogen is discharged on the water surface (internal nitrogen exhaust time / inert gas exhaust time) as safety information for the diver to safely dive. The calculation of the amount of nitrogen in the body described below is merely an example, and various methods can be used. Therefore, an example thereof will be briefly described here.

In the safety information deriving means 60, first, in order to calculate the nitrogen accumulation amount in the body as a partial pressure, a water depth measuring means using the pressure sensor 34, the amplification circuit 35 and the A / D conversion circuit 36 shown in FIG. 61, the CPU 51 shown in FIG.
Respiratory gas nitrogen partial pressure calculating means 62 realized as a function of the ROM 53 and the RAM 54, a respiratory gas nitrogen partial pressure storing means 63 using the RAM 54 shown in FIG. 2, and a CPU shown in FIG.
51, ROM 53, internal nitrogen partial pressure calculating means 64 realized as the functions of RAM 54, internal nitrogen partial pressure storing means 65 using RAM 54 shown in FIG. 2, and clocking means using time counter 33 shown in FIG. 68, a comparison means 6 which is realized as a function of the CPU 51, the ROM 53, and the RAM 54 shown in FIG. 2 and compares the data stored in the respiratory air nitrogen partial pressure storage means 63 and the internal nitrogen partial pressure storage means 65.
6, CPU51, ROM53, RAM54 which is shown in Figure 2
The half-saturation time selecting means 67 is realized as the function of.

Of these components, respiratory air nitrogen partial pressure calculation means 62, internal nitrogen partial pressure calculation means 64, comparison means 6
6. The half-saturation time selecting means 67 is the CPU 51, R of FIG.
It can be realized as software by the OM 53 and the RAM 54, but can also be realized by only a logic circuit which is hardware, or a combination of a logic circuit and a processing circuit including a CPU and software.

In this configuration example, the water depth measuring means 61 measures and outputs the water pressure P (t) corresponding to the time t.

The respiratory air nitrogen partial pressure calculating means 62 calculates and outputs the respiratory air nitrogen partial pressure PIN ₂ (t) based on the water pressure P (t) output from the water depth measuring means 61. The respiratory air nitrogen partial pressure PIN ₂ (t) can be calculated by the following equation PIN ₂ (t) = 0.79 × P [bar] from the water pressure P (t) in the dive.

The respiratory air nitrogen partial pressure storage means 63 stores the P calculated by the respiratory air nitrogen partial pressure calculation means 62 according to the above equation.
The value of IN ₂ (t) is stored.

The in-vivo nitrogen partial pressure calculating means 64 calculates the in-vivo nitrogen partial pressure PGT (t) for each compartment having different absorption / exhaust rates of nitrogen. Taking one compartment example, tissue nitrogen partial pressure PGT absorbing / discharged from dive time t = t ₀ to t _E ((t _E) is, t ₀ o'clock tissue nitrogen partial pressure PGT and (t ₀₎ It is calculated from the dive time t _E and the half saturation time T _H.

As shown in FIG. 5, the half-saturation time T _H here means that when the internal nitrogen partial pressure PGT (t _E ) is t ₀ , the internal nitrogen partial pressure PGT (t ₀ ) is measured under this water pressure. In the process of reaching the respiratory air nitrogen partial pressure PIIG, the internal nitrogen partial pressure PGT (t
It corresponds to the time (half time) until the intermediate pressure between ₀ ) and the respiratory gas nitrogen partial pressure PIIG is reached.

The result is as shown in FIG.
It is stored in the internal nitrogen partial pressure storage means 65 as PGT (t _E ). The calculation formula for this is as follows.

[0040]

[Equation 2]

Here, k is a constant obtained experimentally.

Next, the comparison means 66 compares PIN ₂ (t), which is the result of the respiratory air nitrogen partial pressure storage means 63, with PGT (t), which is the result of the internal nitrogen partial pressure means 5, and as a result, by the half-saturation time selecting means 67, and variable half saturation time T _H as used tissue nitrogen partial pressure calculation unit 64.

For example, the respiratory air nitrogen partial pressure P at t = t ₀
If IN ₂ (t ₀ ) and the internal nitrogen partial pressure PGT (t ₀ ) are stored in the respiratory gas nitrogen partial pressure storage means 63 and the internal nitrogen partial pressure storage means 65, respectively, the comparison means 66 will use this PIN ₂ (T ₀ ) is compared with PGT ((t ₀ ).

The internal nitrogen partial pressure calculating means 64 is controlled by the half-saturation time selecting means 67 as follows, and t
The nitrogen partial pressure PGT (t _E ) in the body when = t _E is calculated.

[0045]

[Equation 3]

[0046]

[Equation 4]

Here, in the above two equations, k is a constant and T _H2 <
Calculated as T _H1 .

Note that PGT (t ₀ ) = PIN ₂ (t ₀ ).
In this case, the half-saturation time is preferably calculated as T _H = (T _H2 + T _H1 ) / 2. Also, these times (t ₀ and t
The measurement for _E ) is managed by the time measuring means 68 in FIG.

Here, PGT (t ₀ )> PIN
_{When 2} (t ₀ ), nitrogen is discharged from the body, and when PGT (t ₀ ) <PIN ₂ (t ₀ ), nitrogen is absorbed into the body. Changing the half-saturation time at these times means that the half-saturation time is long when nitrogen is discharged, and it takes time to discharge the nitrogen. Conversely, the half-saturation time is changed when nitrogen is absorbed. It is short and the time taken for absorption is short compared to the time taken for discharge.

By doing so, the simulation of the amount of nitrogen in the body can be performed more strictly. Therefore, if you set an allowable value for the partial pressure of nitrogen in the body,
The time required to reach this permissible value (time without diving / safety information) and the time until the nitrogen partial pressure in the body reaches an equilibrium state on the water surface (nitrogen excretion time / safety information) are calculated accurately. be able to. In this way, the information processing apparatus 1 for divers of the present embodiment is configured with the diving possible time deriving means 92 and the body nitrogen discharging time deriving means 91 for deriving the no-decompression diving possible time and the nitrogen discharging time in the body as safety information of the diver. Has been done.

In this embodiment, the internal nitrogen partial pressure calculating means 64
When determining the amount of accumulated nitrogen in the body (internal nitrogen partial pressure PGT (t)), it is determined that the diver has started to rest on the water surface based on the measurement result of the water depth measuring means 61,
The result of timing by the timing means 68 is 10 from the start of rest.
It is configured to consider that excess inert gas is not discharged from the body until the time elapses. That is, even if the diver rests on the surface of the water, for example, when diving for about 10 minutes and diving as it is,
It is assumed that exhaustion of the inert gas from the body is slow during the short period after the rest and the inert gas is discharged slowly from the body. Consider. Therefore, even if the diver pauses for about 10 minutes and then continues to dive, the amount of nitrogen accumulated in the body will be increased by the amount that should have been discharged during the rest period, so the diver will suffer decompression sickness and other risks. Can be more reliably protected from

[Structure of Correcting Means for Safety Information] In the information processing apparatus 1 for divers configured as described above,
If the diver is informed of the in-vivo nitrogen excretion time calculated by the in-vivo nitrogen excretion time deriving means 91, as long as the diver pauses until the in-vivo nitrogen excretion time elapses and then starts diving,
It can be said that diving can be started without excess nitrogen in the body (first dive). In addition, if the diver is informed of the no-decompression diving possible time calculated by the diving possible time deriving means 92,
As long as the diver dives while adhering to the no-decompression diving time, it can theoretically be said that the diver does not enter the decompression diving state. However, the amount of nitrogen accumulated in the body, water pressure, and non-decompressible dive time obtained by the above algorithm do not take into account the dive history up to that point, so the safety factor is the diver's fatigue level. I can't say that.

Therefore, in the divers information processing apparatus 1 according to the present embodiment, based on the dive history, after the current dive,
An information correction unit 99A is configured to correct the internal nitrogen discharge time and the non-decompression dive time calculated by the internal nitrogen discharge time deriving unit 91 and the dive time deriving unit 92.

In this embodiment, as the information correcting means 99A, the level of the internal nitrogen partial pressure (internal nitrogen accumulation amount) is judged at the start of the current diving, and the safety information deriving means 60 makes a predetermined correction corresponding to the judgment result. Is configured to be applied to the safety information derived by. That is, the information correction means 9
When 9A starts diving, first, the present internal nitrogen partial pressure PGT (t) calculated by the internal nitrogen partial pressure calculating means 64 is calculated.
It is judged whether the excess nitrogen amount is 0 or not (dive history information whether it is the first dive or the repeated dive), and if it is 0, it is regarded as the first dive and the internal nitrogen partial pressure is calculated. Current internal nitrogen partial pressure PGT calculated by the means 64
Safety information of (t) and the internal nitrogen discharge time and the non-decompressible dive time calculated by the internal nitrogen discharge time deriving means 91 and the dive time deriving means 92 using the internal nitrogen partial pressure PGT (t) as they are. Is output and displayed on the liquid crystal display panel 11. On the other hand, the present internal nitrogen partial pressure PGT calculated by the internal nitrogen partial pressure calculating means 64 is calculated.
When the excess nitrogen amount is not 0 in (t), it is determined that the diving is repeated, and it is determined which level (ratio of the amount of accumulated nitrogen in the body to the allowable value) shown in Table 1 is, for example. The coefficient corresponding to the determination result is multiplied by the body nitrogen discharge time and the no-decompression dive time calculated by the body nitrogen discharge time deriving means 91 and the dive time deriving means 92.

[0055]

[Table 1]

As a result, whether the current dive is the first dive or the repeated dive, the amount of accumulated nitrogen in the body is simulated, and the corresponding nitrogen discharge time in the body and the non-decompressible dive time are calculated. In that case, assuming that the diver is fatigued, a longer body nitrogen discharge time is derived as safety information, and a shorter non-decompression dive time is derived. Therefore, even when the diver is tired from repeated diving, the diver can be more reliably protected from diving disease and other dangers.

[Another Configuration of Correcting Means for Safety Information]
The information correction means 99A described with reference to FIG.
The present internal nitrogen partial pressure PGT (t) calculated by the internal nitrogen partial pressure calculating means 64 is kept as it is, and the internal nitrogen discharging time and non-decompressible dive calculated by the internal nitrogen discharging time deriving means 91 and the diving possible time deriving means 92 are calculated. Although the correction is directly applied to the time, as shown in FIG.
Information correction unit 99B that corrects the current internal nitrogen partial pressure PGT (t) calculated by the internal nitrogen partial pressure calculation unit 64.
May be configured.

The information correcting means 99B determines the current level of the internal nitrogen partial pressure PGT (t) calculated by the internal nitrogen partial pressure means 64 when starting diving, and determines the internal nitrogen partial pressure P.
If the amount of excess nitrogen in GT (t) is 0, the present internal nitrogen partial pressure PGT calculated by the internal nitrogen partial pressure means 64 is calculated.
Using (t) as it is, means 9 for deriving the nitrogen excretion time in the body
1 and the diving time derivation means 92 are caused to calculate the body nitrogen discharge time and the non-decompression diving time as safety information.

On the other hand, when the current nitrogen partial pressure PGT ((t) calculated by the nitrogen partial pressure means 64 in the body is not 0, the value is, for example, as shown in Table 2.
Which level (ratio of the amount of nitrogen accumulated in the body to the allowable value) is determined, and each of the half-saturation times _TH ( _TH2 , _TH1 ) is multiplied by a coefficient corresponding to the determination result, Based on the corrected half-saturation time T _H (T _H2 , T _H1 ), the internal nitrogen partial pressure PGT is calculated by the internal nitrogen partial pressure calculating means 64.
Let (t) be calculated.

[0060]

[Table 2]

As a result, the amount of nitrogen accumulated in the body is generally used for the first dive of this time as the half-saturation time T
It is simulated based on _H , and the corresponding nitrogen excretion time in the body and non-decompressible dive time are calculated accordingly. On the other hand, in the case of repetitive diving, it is considered that the diver is tired, and the amount of nitrogen accumulation in the body corrected to the one in which nitrogen dissolves quickly and nitrogen is discharged is calculated. As a result, as the amount of accumulated nitrogen in the body increases, a longer value of the nitrogen excretion time in the body is derived as safety information, and a shorter value of the non-decompression dive time is derived. Therefore, even if the diver is tired from repeated diving, the diver can be reliably protected from diving disease and other dangers.

[Explanation of Each Mode] The information processing apparatus 1 for divers having the above-described configuration has each mode (time mode ST1, surface mode ST2, planning mode ST3, setting mode ST) described below with reference to FIG.
4, diving mode ST5, log mode ST6) can be used. Among these modes, in the surface mode ST2, the nitrogen discharge time in the body considering the diving history is displayed as described above, and the planning mode S
In T3 and diving mode ST5, the non-decompressible dive time considered in the dive history is displayed. Further, by adopting the information correcting means 99B shown in FIG. 6, it is possible to display the amount of nitrogen accumulated in the body as a value in consideration of the history of diving.

(Time mode ST1) Time mode ST1
Is a function when the switch is not operated and when the nitrogen in the body is in an equilibrium state and is carried on land. The liquid crystal display panel 11 has a current date 100, a current time 101, and an altitude rank 102 (see FIG. 1). If the altitude rank is rank 0, the mark is not displayed.) Is displayed. The altitude rank 102 automatically measures the altitude of the current location and displays it in three ranks. At the current time 101, the display of the current time 1
Notify that it is 01. For example, in the state shown in FIG. 7, it is displayed that it is now 10:06 on December 5th.

Also, since the atmospheric pressure changes when the user goes up and down at altitudes above and below sea level, the dissolution of nitrogen into the body and the discharge of nitrogen occur regardless of the presence or absence of past dives. Therefore, in the divers information processing device 1 of the present embodiment, even in the time mode ST1, when such an altitude change occurs, the decompression calculation is automatically started and the display is changed. That is, although not shown, the time after the altitude changes, the time until the internal nitrogen reaches an equilibrium state, and the amount of nitrogen that is discharged or dissolved from the present to the equilibrium state are displayed.

In this time mode ST1, when switch A is pressed, the mode directly shifts to planning mode ST3, and when switch B is pressed, the mode directly shifts to log mode ST6. After pressing the switch A, if the switch B is pressed for 5 seconds while the switch A is being pressed, the mode shifts to the setting mode ST4.

During this time mode ST1, FIG.
When it is detected that the water has entered through the water entering monitoring switch 30 shown in (4), the function is automatically checked, and if it is confirmed that the sensor and the like are normal, the mode automatically shifts to the diving mode ST5. At this time, when there is an abnormality in the sensor or the like, the alarm device 3 shown in FIG.
The alarm will sound from 7.

(Surface Mode ST2) The diver's information processing apparatus 1 automatically shifts to the surface mode ST2 when the water entry monitoring switch 30 that has been conducting is brought into an insulated state after the end of the diving. The surface mode ST2 is a function to be carried on land until 48 hours have passed since the last diving. In the surface mode ST2, in addition to the data (current month 100, current time 101, altitude rank) displayed in the time mode ST1, a guideline for changes in the amount of nitrogen in the body after the end of diving is displayed. That is, the excess nitrogen dissolved in the body is discharged and the time until the equilibrium state is reached is displayed as the body nitrogen discharging time 201. This body nitrogen discharge time 201
Counts down the time until the equilibrium state is reached.
Nothing is displayed after the internal nitrogen discharge time 201 reaches 0 hour 00 minutes. In addition, the elapsed time after diving is displayed as the water surface down time 202, and the water surface down time 202
Indicates that when the water depth becomes shallower than 1.5 m in the diving mode ST5, the diving is ended and the time measurement is started, and after the measurement is performed for 48 hours, no display is made. Therefore, in the information processing apparatus 1 for divers, the surface mode ST2 is set on land until 48 hours have elapsed after the end of the dive, and thereafter the time mode S is set.
It is T1. In the state shown in FIG. 7, it is displayed that the current time is 11:58 on December 5, and 1 hour and 13 minutes have passed since the end of the dive. In addition, it is displayed that the amount of nitrogen dissolved in the body by diving performed so far corresponds to four in the body nitrogen graph 203,
The time from this state until the excess nitrogen in the body is discharged to reach the equilibrium state (internal nitrogen discharge time 201) is displayed as, for example, 10 hours and 55 minutes.

In the surface mode ST2, when the switch A is pressed, the planning mode ST3 is directly moved, and when the switch B is pressed, the log mode ST6 is directly moved. After pressing switch A, if switch B is pressed for 5 seconds with switch A pressed, the setting mode S
Move to T4.

During the surface mode ST2, when it is detected that the water has entered through the water entering monitor switch 30, the function is automatically checked, and if it is confirmed that the sensor is normal, the dive mode is automatically changed to ST5. Move to. At this time, when there is an abnormality in the sensor or the like, the alarm device 37 gives an alarm to that effect.

(Setting mode ST4) Setting mode ST4
Is a function for performing ON / OFF setting of a warning alarm and setting of a safety level in addition to the setting of month / day 100 and current time 101. In this setting mode ST4,
Current month 100, year 106, current time 101, safety level (not shown), alarm ON / OFF (not shown), and altitude rank are displayed. Among these items, the safety level is usually It is possible to set two levels, that is, a level for performing decompression calculation of 1 and a level for performing decompression calculation premised on moving to a place of an altitude rank one rank higher after diving. The alarm ON / OFF is a setting for setting whether or not various warning alarms are sounded from the alarm device 37. If the alarm is set OFF, the alarms do not sound. Therefore, in a device such as the diver's information processing device 1 in which the dead battery is particularly fatal, the power consumed for the alarm can be reduced, which is convenient.

In this setting mode ST4, each time the switch A is pressed, the setting item switches in the order of hour, second, minute, year, month, day, safety level, alarm ON / OFF, and the display of the corresponding portion blinks. To do. At this time, if switch B is pressed, the numerical value or character of the setting item changes, and if the switch is kept pressed, the numerical value or character changes rapidly. Alarm ON / O
When switch A is pressed while FF is blinking, the surface mode ST2 or time mode ST1 is returned to. If neither switch A or B is pressed for 1 to 2 minutes, surface mode ST2 or time mode ST
Automatically returns to 1.

During this setting mode ST4, even when it is detected that water has entered through the water entering monitor switch 30, a function check is automatically carried out, and if it is confirmed that the sensors are normal, the diving mode ST5 is entered. Migrate automatically. At this time, when there is an abnormality in the sensor or the like, the alarm device 37 gives an alarm to that effect.

(Planning Mode ST3) The planning mode ST3 is a mode for inputting the maximum water depth of the next dive and the standard of the dive time. In this mode, depth of water 301, no decompression diving time 30
2, safety level, altitude rank, water surface down time 20
2. The internal nitrogen graph 203 is displayed. Water depth rank 3
The display of the rank of 01 changes from the low rank to the high rank in order, and the non-decompression diving possible time 302 at each water depth rank 301 is displayed. For example, water depth rank 301 is 9m, 12m, 15m, 18m, 21
m, 24m, 27m, 30m, 33m, 36m, 39
It changes every 5 seconds in the order of m, 42m, 45m, 48m. At this time, if the time mode ST1 shifts to the planning mode ST3, it is the first diving plan in which there is no excessive nitrogen accumulation in the body due to past diving.
When the body nitrogen graph 203 is 0 and the water depth is 15 m, the non-decompression dive time 302 is displayed as 66 minutes. Therefore, it can be seen that no-decompression diving is possible for less than 66 minutes at a water depth of 12 m or more and 15 m or less. On the other hand, if the transition from the surface mode ST2 to the planning mode ST3 is made, it is a plan of repeated diving in which excess nitrogen is accumulated in the body due to past diving. Maximum water depth is 15m
In this case, the non-decompression dive time 302 is displayed as 49 minutes. Therefore, it can be seen that no-decompression diving is possible for less than 49 minutes at a water depth of 12 m or more and 15 m or less.

In the planning mode ST3, if the switch A is continuously pressed for 2 seconds or more before the water depth rank 301 is displayed as 48 m, the surface mode ST2 is directly entered. Further, after the water depth rank 301 is displayed as 48 m, the time mode ST1 or the surface mode ST2 is automatically entered. Further, when there is no switch operation for a predetermined period, the surface mode ST2 or the time mode ST1 is automatically entered, which is convenient because it is not necessary to perform the switch operation each time. On the other hand, when the switch B is pressed, the log mode ST6 is directly entered.

During the planning mode ST3,
When it is detected that water has entered through the water input monitor switch 30, a function check is automatically performed, and if it is confirmed that the sensor is normal, the diving mode ST5
Automatically transitions to. At this time, when there is an abnormality in the sensor or the like, the alarm device 37 gives an alarm to that effect.

(Diving Mode ST5) The diving mode ST5 is a mode for diving. In the no-decompression diving mode ST51, the current water depth 501, diving time 502,
This is a function for displaying information necessary for diving, such as maximum water depth 503, non-decompression dive time 302, in-vivo nitrogen graph 203, and altitude rank. For example, in the state shown in FIG. 7, 12 minutes have passed since the dive was started, the water depth is 16.8 m, and it is displayed at this water depth that no decompression diving can be continued for another 42 minutes. .
In addition, it is displayed that the maximum water depth to date is 20.0 m, and the current amount of internal nitrogen is the internal nitrogen graph 203.
A message indicating that the four marks are lit is displayed.

Here, for the purpose of informing the diver of the shift to the diving mode ST5, the display of the current water depth 501 may be blinked. With this configuration,
Since the fact that the processing in the diving mode ST5 is being performed can be visually recognized on the display on the liquid crystal display panel 11, the diver does not have to worry about whether or not the diving mode ST5 is functioning normally, which is convenient. .

In this diving mode ST5, as described above as a function of monitoring the ascent rate, rapid ascent causes decompression sickness. Therefore, the current ascent rate is obtained every 6 seconds, and the ascent rate and the current water depth are calculated. When the ascent velocity obtained this time is faster than the ascent velocity allowable value, the alarm device 37 issues an alarm sound (ascent velocity violation warning) at a frequency of 4 kHz for 3 seconds. , Liquid crystal display panel 1 so as to slow down the floating speed
In 1, the display of "SLOW" and the display of the current water depth are alternately blinked at a cycle of 1 Hz to give a floating speed violation warning. Further, the vibration generator 38 vibrates to warn the diver that the flying speed is violated. Then, when the ascending speed drops to a normal level, the ascending speed violation warning is stopped.

In the diving mode ST5, when the switch A is pressed, the current time 101 and the current water temperature 504 are displayed as the current time display mode ST52 only while the switch A is continuously pressed. In the state shown in FIG. 7, it is currently displayed that the time is 10:18 and the water temperature is 23 ° C. In this way, diving mode ST5
When there is a switch operation to that effect, the current time 101 and the current water temperature are displayed only for a predetermined period.
Even if it is configured to always display only the data necessary for diving on a small display surface (no-decompression diving mode ST51), the current time 101 and the like can be displayed as needed (current time display mode ST52), It is convenient. Moreover, since the switch operation is used to switch the display even in the diving mode ST5 as described above, the information that the diver wants to know can be displayed at an appropriate timing.

During the diving mode ST5, when the water depth is shallower than 1.5 m, it is treated as if the diving is finished, and when the water entering monitoring switch 30 which has been conducted is in the insulated state. The mode automatically shifts to the surface mode ST2. In the meantime, the dive result recording means 78 shown in FIG. 3 sets the dive result (diving date, dive date, dive date, during this period) as one dive operation from when the water depth becomes deeper than 1.5 m to when shallower than 1.5 m.
Various data such as dive time and maximum water depth)
Remember and keep it. At the same time, if the above-mentioned ascending speed violation warning is continuously issued twice or more during the current diving, that fact is also recorded as a diving result.

The information processing apparatus 1 for divers of this embodiment is
Although it is constructed on the premise of no-decompression diving, if a decompression diving situation occurs, the diver is notified with an alarm sound to that effect and the mode is switched to the following decompression diving display mode ST53. That is, in the decompression diving display mode ST53, the current water depth 501, the diving time 502, the internal nitrogen graph 203, the altitude rank, the decompression stop depth 505, the decompression stop time 506, and the total ascent time 50.
7 is displayed. In the state shown in FIG. 7, 2 from the start of diving
After 4 minutes, it is displayed that the water depth is 29.5 m. Also, since the amount of nitrogen in the body exceeds the maximum allowable value and is dangerous, the water depth is 3 m while maintaining a safe ascent speed.
You will be ascended to where, and an instruction will be displayed to stop the decompression for 1 minute. In addition, an instruction to take a minimum of 5 minutes to reach the surface of the water as a safe ascent rate is displayed. Furthermore, an upward arrow 508 indicates that the amount of nitrogen in the body is currently increasing.

Therefore, the diver floats after stopping the decompression based on the above display contents, but the downward arrow 509 indicates that the amount of nitrogen in the body tends to decrease during the decompression. .

(Log Mode ST6) When the switch B is pressed in the time mode ST1 or the surface mode ST2, the mode directly shifts to the log mode ST6. Log mode S
T6 is a function of storing and displaying various data when the dive depth is deeper than 1.5 m in the diving mode ST5 for 3 minutes or more. Such diving data is sequentially stored as log data for each dive, and a maximum of 10 log data is stored and retained. When diving more than that, old data is deleted in order, and the latest 10 data are always recorded. The dive of is memorized.

In the log mode ST6, the log data is displayed on two screens that switch every 4 seconds. First
Screen ST61, diving date 601, average water depth 50
9, the dive start time 603, the dive end time 604, the altitude rank, and the body nitrogen graph 203 when the dive is finished are displayed. On the second screen ST62, the log number 605, which is the diving number on that day, the maximum water depth 608, the diving time 606, the water temperature 607 at the maximum water depth, the altitude rank,
The in-vivo nitrogen graph 203 at the end of the dive is displayed. For example, in the state shown in FIG. 7, when the altitude rank is 0, the second dive on December 5 has a dive of 1
It started at 0:07 and ended at 10:45,
It is displayed that the dive was for 38 minutes. In the diving at this time, the average water depth was 14.6 m, the maximum water depth was 26.8 m, and the water temperature at the maximum water depth was 23 ° C. After the diving was completed, the nitrogen graph 203 in the body dissolved four nitrogens in the body. The message is displayed. As described above, in the log mode ST6, various information is displayed while automatically switching between the two screens, so that a large amount of information can be displayed even if the display surface is small.

Further, in the log mode ST6, when the above-mentioned speed violation warning is issued twice or more during the diving currently displayed, the fact is indicated, for example, by the liquid crystal display panel 11
“SLOW” is displayed in the seventh display area 117 of.

In the log mode ST6, each time the switch B is pressed, the new data is switched to the old data, and after the oldest data is displayed, the time mode ST1 or the surface mode ST2 is entered. Even if the switch B is kept pressed for 2 seconds or more during the process, the mode is shifted to the time mode ST1 or the surface mode ST2. Further, even when neither of the switches A and B is pressed for 1 to 2 minutes, the surface mode ST2 or the time mode ST1 is automatically returned, which is convenient because it is not necessary to perform the switch operation each time. On the other hand, when the switch A is pressed, the mode directly shifts to the planning mode ST3. As described above, in the present embodiment, it is possible to directly switch between any of the planning mode ST3, the surface mode ST2, and the log mode ST6 by one switch operation. Therefore, since there is a high degree of freedom in the route of transition to each mode, it is possible to directly transition between the planning mode ST3 and the log mode ST6 with a single operation. It is convenient and easy to set up.

In addition, during the log mode ST6, when it is detected that water has entered through the water entering monitoring switch 30, a function check is automatically performed, and if it is confirmed that the sensor is normal, the dive mode is automatically changed to ST5. Shift to the target. At this time, when there is an abnormality in the sensor or the like, the alarm device 37 gives an alarm to that effect. In this way, planning mode ST3, surface mode ST2 (time mode ST1), log mode ST
6. Since it is possible to automatically shift to the diving mode ST5 from any of the setting modes ST4,
For example, it is convenient that the dive can be started immediately after checking the past dive records in the log mode ST6 or after setting the dive plan in the planning mode ST3. In addition, since it is possible to shift to the diving mode ST5 from any mode, there is no failure to know that it was not ready to shift to the diving mode ST5 and failed to shift to the diving mode ST5 only after starting diving, Easy to use. Moreover, when shifting to the diving mode ST5, a function check is performed in advance. When an abnormality is detected in the function checking, the shift to the diving mode ST5 is automatically stopped and an alarm is issued to that effect. This is convenient because there is no failure to shift to the diving mode ST5 while there is it, and the abnormalities are immediately noticed. Moreover, it is safe from the viewpoint of preventing decompression sickness because it does not fail to monitor the amount of inert gas accumulated in the body during diving.

(Other Embodiments) In the above embodiment, when the safety information notified by the diver to safely dive is corrected to the content considering the past diving history, the first diving is not performed. However, from the viewpoint of preventing the diver from danger by considering the history of diving, for example, when starting diving, what should be done 48 hours before that? It may be configured such that whether or not the diving is performed once is confirmed by the log data and the safety information is automatically corrected according to the number of times. In this case, it is possible to consider not only repeated diving but also how many times the diver repeated the first dive within 48 hours.

[0089]

As described above, the information processing apparatus for divers according to the present invention is characterized in that the safety information is notified in consideration of not only the water pressure and the diving time but also the diving history of the diver. For example, whether the dive to be performed this time is the first dive or a repetitive dive, and even if it is the same repetitive dive, depending on the amount of excess inert gas remaining in the body, the diver can make a safe dive. Change the safety information to be notified to do so. Therefore, even if the diver does not notice fatigue and tries to dive again, the diver can be more reliably protected from decompression sickness and other dangers.

[Brief description of drawings]

FIG. 1A is a plan view showing a device body and part of an arm band of a diver's information processing device to which the present invention is applied, and FIG. 1B is a view of the device body viewed from a wristwatch at 6 o'clock. It is a side view at the time.

FIG. 2 is a block diagram of the entire information processing apparatus for divers to which the present invention is applied.

FIG. 3 is a functional block diagram for giving a flying speed violation warning in the diver's information processing device to which the present invention is applied.

FIG. 4 is a functional block diagram of safety information derivation means and information correction means that are included in a diver's information processing apparatus to which the present invention is applied.

FIG. 5 is an explanatory diagram showing the meaning of half-saturation time used when measuring the amount of nitrogen in the body in the information processing apparatus for divers to which the present invention is applied.

FIG. 6 is a functional block diagram of another safety information derivation means and information correction means which are included in the diver's information processing apparatus to which the present invention is applied.

FIG. 7 is a flowchart showing each function of the information processing apparatus for divers to which the present invention is applied.

[Explanation of symbols]

1 ・ ・ ・ Information processing device for divers 5 ... Operation part 10 ... Display unit (informing means) 11 ... Liquid crystal display panel 30 ... Water monitoring switch 34 ... Pressure sensor 37: Sounding device (informing means) 38 ... Vibration generator (informing means) 50 ... Control unit 51 ... CPU 53 ... ROM 54 ... RAM 60: Safety information derivation means 61 ... Water depth measuring means (water pressure measuring means) 62 ... Respiratory air nitrogen partial pressure calculation means 63 ... Respiratory nitrogen partial pressure storage means 64 ... Internal nitrogen partial pressure calculation means 65 ... Internal nitrogen partial pressure storage means 67 ... Half-saturation time selection means 68 ... Clocking means (monitoring means) 75 ... Ascent rate measuring means 76 ... Elevation speed allowable value (Elevation speed allowable value) 77: Ascending speed violation determining means (safety information deriving means) 78: Diving result recording means 91 ... Means for deriving nitrogen discharge time from the body 92 ... Means for deriving available diving time 99A, 99B ... Information correction means A, B ... switch ST1 ・ ・ ・ Time mode ST2 ・ ・ ・ Surface mode ST3 ... Planning mode ST4: Setting mode ST5: Diving mode ST6 ... Log mode

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Satoshi Chiba 3-3-5 Yamato, Suwa-shi, Nagano Seiko Epson Corporation (72) Inventor Kazuko Furuta 3-3-5 Yamato, Suwa-shi, Nagano Within Co-Epson Corporation (56) Reference JP-A-2-54196 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G04G 1/00 B63C 11/02

Claims (5)

(57) [Claims] 1. A water pressure measuring means for measuring a water pressure, a time measuring means for measuring the time elapsed during diving and during surface rest, and a body for diving based on the measurement result of the time measuring means and the measurement result of the water pressure measuring means. And a safety information deriving means for deriving safety information for divers to perform safe diving based on the calculation result wherein possess the information correction means for performing correction corresponding to the dive history so far, and informing means for informing the security information corrected by the information correcting means diver relative safety information, before
The information correction means is the dive until the last time when this dive starts
Based on the historical information
Judgment, and make a predetermined correction corresponding to the judgment result
Apply to the safety information derived by the report derivation means
An information processing device for divers, which is configured . 2. The information correction means according to claim 1.
Means that the safety information deriving means should perform the predetermined correction.
It is designed to correct the calculated amount of inert gas accumulated in the body.
An information processing device for divers characterized by being formed . 3. The safety information according to claim 1 or 2.
Derivation means are available only after the diver has started a pause on the surface of the water.
Excessive inert gas is not discharged from the body for a fixed time
An information processing apparatus for a divers , characterized in that it is configured to be regarded as . 4. Water pressure measuring means for measuring water pressure and diving
And a time measuring means for measuring the elapsed time during the suspension of the water surface,
Measurement result of the timing means and measurement result of the water pressure measurement means
The body is excessively accumulated in the body by diving based on
Calculate the amount of accumulated inert gas, and
It is a safety guide for Eber to derive safety information for safe diving.
All information deriving means and the safety information deriving means
Correction for safety information corresponding to the history of diving
Information correction means to be applied, and the information correction means
And a notification means for notifying the diver of safety information
As for the safety information derivation method, the diver starts a pause on the surface of the water.
Excessive inert gas is discharged from the body for a predetermined time after
An information processing apparatus for a divers characterized by being configured so as to be regarded as not being processed. 5. The method according to any one of claims 1 to 4,
The notification means is configured to measure the amount of the inert gas in the body, the amount of the inert gas discharged from the body during rest on the water surface to the equilibrium state, and the excess amount of the inert gas in the body. An information processing apparatus for divers, characterized in that at least one piece of information of the non-decompression diving possible time corresponding to the amount of the inert gas dissolved in is reported as the safety information.