JPH1123747A - Divers information processing device - Google Patents

Abstract

(57) [Summary] [Problem] Even if it is not possible to take enough rest time so that the inert gas excessively accumulated in the body is completely discharged on land, information for safe next dive is provided in advance. To provide a divers information processing device that can notify a diver. A diver's information processing device 1 sets a scheduled water surface stop time 941 from the current time to the next dive and a final expected water depth value 946 at the next dive.
Based on these setting conditions, the body nitrogen deriving means 60
Calculates the amount of nitrogen 601 in the body, and based on the calculation result, the dive time deriving means 92 determines the non-decompression dive time 302
Is calculated. The calculation result of the no-decompression diving time 302 is
It is displayed on the liquid crystal display panel 11 in advance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus for divers, also called a dive computer. More specifically, the present invention relates to a technique for notifying a diver of information about the safety of a dive to be performed again during use on land in such an information processing apparatus.

[0002]

2. Description of the Related Art For a method of calculating decompression conditions after diving performed in a diver's information processing apparatus called a dive computer, see "DIVE COMPUTERS A CONSUMER'S GUIDE TO HISTORY," written by KEN LOYST et al.
THEORY & PERFORMANCE ') Watersport Publishing Inc.
(1991). For literature on the theory, see AA Buhlmann's "Decompression-Deco
mpression Sickness ", Springer, Berlin (1984). Both of these documents suggest that an inert gas such as nitrogen in the respiratory gas dissolved into the body by diving may become a bubble in the body and cause decompression sickness. From the standpoint of more reliably preventing decompression sickness, AABu
hlmann's "Decompression-Decompression Sicknes
s ", Springer, Berlin (1984), pp.14.

Therefore, in a diver's information processing apparatus,
Based on the above theory, the amount of inert gas in the body is grasped, and after the dive ends, when it goes up on land, the time required for the amount of inert gas in the body to return to the equilibrium value on land (inert gas discharge time in the body) is displayed. . Therefore, the diver who saw this display,
When diving again, take sufficient rest on land (water surface stop), make sure that the amount of inert gas in the body has completely returned to the equilibrium value, and then dive again, so protect the diver from decompression sickness be able to.

[0004]

However, the conventional diver's information processing apparatus is based on the premise that the next dive is performed after the inert gas excessively accumulated in the body is completely discharged on land. Therefore, divers cannot obtain sufficient safety information in advance when performing the next dive (hereinafter referred to as repetitive diving) with excess body inert gas remaining in the body. There is. In other words, since it takes a long time from several hours to several tens of hours to completely exhaust the inert gas excessively accumulated in the body due to diving, it is necessary to take such a long rest time to take one hour. Since only one dive can be enjoyed a day, divers often perform their next dive with excess inert gas remaining in the body. In such a case,
It is not possible to check in advance how much rest on land how long it is safe to dive next time.

In view of the above problems, in the present invention, the next dive can be safely performed even if the resting time is not sufficient to completely discharge the inert gas excessively accumulated in the body on land. Another object of the present invention is to provide a diver's information processing device that can notify a diver in advance of information to be performed.

[0006]

In order to solve the above-mentioned problems, in the information processing apparatus for divers according to the present invention, a water depth measuring means for measuring the water depth and a time measuring means for measuring the elapsed time during diving and when the water surface is stopped. Based on the measurement result of the time measuring means, the measurement result of the water depth measuring means, and the mixing ratio of the inert gas in the respiratory gas, the body accumulated excessively in the body of the diver while diving and at rest on the water surface. Based on the amount of inert gas in the body capable of deriving the amount of inert gas, and the amount of inert gas in the body derived by the amount of inert gas in the body, based on the amount of inert gas in the body, when the diver stays at a predetermined depth position Dive time deriving means for deriving the time from when the water reaches the water depth position until the inert gas in the body reaches the permissible value as a non-decompression diving time, and a dive time derived by the dive time deriving means. And a display unit capable of displaying the dive time, the water cut-off scheduled time until the next of diving from the present time,
And a condition setting means capable of setting a scheduled water depth value at the time of the next dive, wherein the in-vivo inert gas amount deriving means includes: Based on the mixing ratio of the active gas, and the planned water depth value, when the next dive is started after passing through the water surface suspension for the scheduled water surface suspension time and the dive is to continue at the water depth position corresponding to the planned water depth value. While calculating the amount of inert gas in the body, the dive available time deriving means calculates the no-decompression dive time during the next dive based on the calculation result of the in-vivo inert gas amount, and calculates the no-decompression diable time. The result is displayed on the display unit.

According to the present invention, the condition setting means sets the scheduled water surface stop time from the current time to the next dive and the scheduled water depth value at the next dive, and derives the amount of inert gas in the body based on these set conditions. The means calculates the amount of inert gas in the body after resting without actually taking a rest, and the amount of inert gas in the body when the next dive is performed, and based on the calculation result, derives the dive available time. The means calculates a non-decompression diving possible time in the next dive. Therefore, the diver can set a dive schedule for performing the next dive without suffering from diving by looking at the calculation result of the no-decompression diving time displayed on the display unit.

[0008] In the present invention, the display unit may also display the calculation result of the amount of inert gas in the body at the point in time when the scheduled water surface suspension time has elapsed.

In the present invention, the condition setting means may include a final expected water depth value at the time of the next dive after the water surface suspension of the predetermined water surface suspension time, and temporarily staying on the way to the final expected water depth value. The temporarily retained scheduled water depth value to be set, and the temporarily retained scheduled time at the temporarily retained scheduled water depth value are configured to be settable, and the in-vivo inert gas amount deriving means includes: Time, the mixing ratio of the inert gas in the respiratory gas, the temporary residence scheduled water depth value, the temporary residence scheduled time, and the final arrival scheduled water depth value, based on the water surface suspension scheduled time after the next surface stop. Calculates the amount of inert gas in the body when the dive is started and stays at the water depth position corresponding to the final expected water depth, and based on the calculation result of the amount of inert gas in the body, Time deriving means calculates the non-decompression dive time for the next dive, it is preferable that the calculation result of the wireless decompression dive time has been configured to be displayed on the display unit.

[0010] In this case, the diver can calculate the non-decompression diving time in consideration of not only the final water depth value at the next dive but also the temporary stagnation condition in the middle of the dive. The next dive schedule can be set more specifically.

In the present invention, the display unit may display a calculation result of the amount of inert gas in the body when the vehicle reaches a water depth position corresponding to the final expected water depth value.

In the present invention, the condition setting means is configured so that the inert gas mixture ratio in the respiratory gas to be used in the next dive after the surface stoppage of the scheduled surface stoppage time can be changed to a predetermined value. It is preferred that In other words, if the setting is changed to a respiratory gas with a different inert gas mixture ratio, the newly set respiratory gas is used to calculate the non-decompression diving time when using the next dive, and the calculation result is displayed. A dive schedule that takes advantage of the advantage of being able to dive for a long period of time if a breathing gas having a small active gas mixture ratio is used can be set, and the usability is good.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. In the information processing apparatus for divers to which the present invention is applied, the amount of inert gas in the body after resting without actually taking rest on land, and the amount of inert gas in the body during diving scheduled to be performed after rest are calculated. Based on the calculation result, there is a great feature that the non-decompression diving possible time at the time of performing the next dive is calculated and displayed. Also,
Since the information processing device for divers to which the present invention is applied has various other functions, in the following description, after describing the basic configuration and operation of the information processing device for divers, the above-described features will be described. explain.

[Basic Configuration] FIGS. 1A and 1B are plan views showing a device main body and a part of an arm band of a diver's information processing device of the present embodiment, respectively. It is a side view at the time of seeing. FIG. 2 is a block diagram thereof.

In FIG. 1, a diver's information processing apparatus 1 of the present embodiment is also called a dive computer, and the amount of nitrogen (inert gas) accumulated in the body during diving (nitrogen partial pressure in the body). Is measured, and a rest time to be taken on land after diving is displayed based on the measurement result. In the information processing apparatus 1 for divers, the wristbands 3 and 4 are respectively connected to the 6 o'clock side and the 12 o'clock side of the wristwatch with respect to the rectangular main body 2. Similarly, it can be worn on an arm. The apparatus main body 2 includes an upper case 21
The lower case 22 is fixed in a completely watertight state by screws or the like, and a board (not shown) on which various electronic components and the like are mounted is housed inside.

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. I have. The switches A and B are operation units 5 for selecting and switching each mode performed by the diver's information processing apparatus 1 and setting various conditions, as described later. Further, switches C, D, E, and F composed of push buttons are also provided on the 3 o'clock side and the 9 o'clock side of the apparatus main body 2. These switches C, D, E, and F are operation units 5 for inputting and setting conditions for setting a dive schedule in a planning mode described later.

On the 9 o'clock side of the wristwatch on the upper surface side of the apparatus main body 2, a water entry monitoring switch 30 using a moisture detection sensor for monitoring whether or not diving has started is configured. The water entry monitoring switch 30 includes two electrodes 31 and 32 exposed on the upper surface of the device main body 2.
These electrodes 31 and 32 conduct with seawater or the like,
It is determined that water has entered when the resistance value between 1 and 32 has decreased. However, the water entry monitoring switch 30 is used only to detect that water has entered and to shift to a diving mode described later, but does not detect that one tying has started. That is, the arm on which the information processing apparatus 1 for divers is mounted may be merely immersed in seawater, and in such a case, it should not be treated as having started diving. Therefore, in the information processing apparatus 1 for divers of the present embodiment, the depth (water pressure) is determined by a pressure sensor (not shown) built in the apparatus main body 2.
Is considered to have started a dive when the water depth exceeds 1.5 m, for example, in this embodiment,
And it is considered that the diving has been completed when it becomes shallower than this water depth value.

As shown in FIG. 2, the information processing apparatus 1 for divers according to the present embodiment includes 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 (display 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, a switch A,
Signals from B, C, D, E, F and the water entry monitoring switch 30 are input.

The diver's information processing apparatus 1 displays the normal time and measures the dive time.
, A clock output from the oscillation circuit 31 is input via the frequency dividing circuit 32, and the time counter 33 constitutes a time measuring means 68 in which time is measured in units of one second.

The diver's information processing apparatus 1 measures and displays the water depth, and measures the amount of nitrogen gas accumulated in the body from the water depth (water pressure) and the dive time. (Semiconductor pressure sensor), an amplification circuit 35 for an output signal of the pressure sensor 34, and an A / D conversion circuit 36 for converting an analog signal output from the amplification circuit 35 into a digital signal and outputting the digital signal to the control unit 50. The water depth measuring means 61 (water pressure measuring means) is constituted. Further, the information processing device 1 for divers is provided with a sound notification device 37 and a vibration generating device 38, which can notify a diver of a warning or the like as an alarm sound or vibration.

In this embodiment, the control unit 50 includes a CPU 51 for controlling the entire apparatus, and a control circuit 52 for controlling the liquid crystal driver 12 and the time counter 33 under the control of the CPU 51. Each mode, which will be described later, is realized by each process performed by the CPU 51 based on the executed program. RAM5
4 is a memory for recording diving results as log data,
It is used as a working memory when performing various calculations.

[Configuration of Display Unit] Referring again to FIG. 1A, a plurality of display areas are formed on the display surface of the liquid crystal display panel 11, and the display performed in these display areas is basically as follows. It is. First, the first display area 111 located on the 12 o'clock side of the wristwatch is the largest of the display areas, and includes a diving mode, a surface mode (time mode), a planning mode, and a log, which will be described later. In the mode, the current water depth, the current month and day, the planned water depth, and the dive month and day (log number) are displayed. The second located at 3 o'clock from the first display area 111
In the display area 112, the diving time, the current time, the no-decompression diving possible time, and the diving start time (dive time) are displayed in the diving mode, the surface mode (time mode), the planning mode, and the log mode, respectively. First
The third display area 113 located on the 6 o'clock side of the display area 111 has a maximum water depth, a body nitrogen discharge time, a respiratory gas in the diving mode, the surface mode (time mode), the planning mode, and the log mode, respectively. And the maximum water depth (average water depth) are displayed. A fourth display area 114 located on the 3 o'clock side of the third display area 113 has a no-decompression diving time and a water surface stop in the diving mode, the surface mode (time mode), the planning mode, and the log mode, respectively. The time, estimated dive time, and dive end time (maximum water temperature at depth) are displayed.
In the fifth display area 115 located on the 6 o'clock side of the third display area 113, the power supply exhaustion warning 104 and the high rank 103 are displayed. In a sixth display area 116 located at the 6 o'clock side of the liquid crystal display panel 11, the amount of nitrogen in the body is graphically displayed. A seventh display area 117 located on the 3 o'clock side of the sixth display area 116 is an area indicating whether nitrogen tends to be absorbed or exhausted when the decompression diving mode is entered in the diving mode. "SLOW" as one of the ascent speed violation warnings that the ascent speed is too fast
And an area for displaying “DECO” as a warning that decompression diving has been reached during diving.

[Basic Configuration of Body Nitrogen Deriving Means and the Like] FIG. 3 shows a diver's information processing apparatus 1 of the present embodiment.
Calculate the amount of nitrogen in the body (the amount of inert gas in the body) that is accumulated excessively in the body during diving, and based on the result,
The time it takes for excess nitrogen to be released from the body and reach an equilibrium state when going ashore and resting (nitrogen excretion time in the body)
Or dive time in a no-decompression dive state when staying at a predetermined depth during diving (no-decompression dive time)
FIG. 4 is a functional block diagram for deriving the formula.

As shown in FIG. 3, in the diver's information processing apparatus 1, nitrogen contained in respiratory air is absorbed into the body,
In addition, the body nitrogen deriving means 6 for simulating the state of being discharged and calculating the body nitrogen amount (body nitrogen partial pressure) 6
0 is configured. 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 body nitrogen deriving means 60, first, 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.
OM 53, respiratory nitrogen partial pressure calculating means 62 realized as functions of RAM 54, respiratory nitrogen partial pressure storing means 63 using RAM 54 shown in FIG. 2, CPU 5 shown in FIG.
1. Internal nitrogen partial pressure calculating means 64 realized as a function of ROM 53, RAM 54, internal nitrogen partial pressure storing means 65 using RAM 54 shown in FIG. 2, and time measuring means using time counter 33 shown in FIG. 68, C shown in FIG.
Comparison means 6 implemented as functions of PU 51, ROM 53, and RAM 54 and comparing data stored in respiratory nitrogen partial pressure storage means 63 and internal nitrogen partial pressure storage means 65
6, CPU 51, ROM 53, RAM 54 shown in FIG.
The half-saturation time selecting means 67 realized as the function of (1) is constituted.

Among these components, the respiratory nitrogen partial pressure calculating means 62, the internal nitrogen partial pressure calculating means 64, and the comparing means 6
6. The half-saturation time selecting means 67 is the CPU 51, R
Although it can be realized as software by the OM 53 and the RAM 54, it 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 a water depth P (t) corresponding to time t.

The respiratory nitrogen partial pressure calculating means 62 calculates and outputs the respiratory nitrogen partial pressure PIN ₂ (t) based on the water depth P (t) output from the water depth measuring means 61. If the respiratory gas is air (oxygen mixture ratio 21% and nitrogen mixture ratio 79%), the respiratory nitrogen partial pressure PIN ₂ (t) is calculated from the water depth P (t) in the dive by the following equation: PIN ₂ (t) = 0.79 × P [bar].

Here, a diver may use respiratory gas having a large mixture ratio of oxygen and a small mixture ratio of nitrogen so as to extend the dive time. In this case, the respiratory nitrogen partial pressure calculating means 62 calculates the respiratory nitrogen partial pressure PIN ₂ (t) using the following formula when the oxygen mixture ratio is 32% and the nitrogen mixture ratio is 68%. PIN ₂ (t) = 0.68 × P [bar] When the oxygen mixture ratio is 36% and the nitrogen mixture ratio is 64%, PIN ₂ (t) = 0.64 × P [bar] is used. Among the settings of the mixing ratio of the respiratory gas, the setting for calculating the respiratory nitrogen partial pressure PIN ₂ (t) when actually diving is performed in a setting mode described later.

The respiratory nitrogen partial pressure storage means 63 stores the P calculated by the respiratory nitrogen partial pressure calculating means 62 as
The value of IN ₂ (t) is stored.

The internal nitrogen partial pressure calculating means 64 calculates the internal nitrogen partial pressure PGT (t) for each compartment having different nitrogen absorption / extraction rates. 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.

Here, the half-saturation time T_HIs shown in FIG.
As shown, the internal nitrogen partial pressure PGT (t _E) Is t₀Body of time
Nitrogen partial pressure PGT (t₀) From the breathing gas nitrogen under this water depth
In the process of reaching the partial pressure PIIG, the internal nitrogen partial pressure PGT (t
₀) And the partial pressure of the respiratory nitrogen partial pressure PIIG
Time (half time).

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

[0034]

(Equation 1)

Here, k is a constant obtained experimentally.

Next, the comparison means 66 compares PIN ₂ (t), which is the result of the respiratory 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 gas nitrogen partial pressure P at t = t ₀
Assuming that IN ₂ (t ₀ ) and the internal nitrogen partial pressure PGT (t ₀ ) are stored in the respiratory nitrogen partial pressure storage means 63 and the internal nitrogen partial pressure storage means 65, respectively, the comparison means 66 determines the PIN ₂ (T ₀ ) and PGT ((t ₀ ) are compared.

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

[0039]

(Equation 2)

[0040]

(Equation 3)

Here, in the above two equations, k is a constant and T _H2 <
Calculated as _TH1 .

Note that PGT (t ₀ ) = PIN ₂ (t ₀ )
In this case, it is preferable to calculate as half-saturation time _TH = ( _TH2 + _TH1 ) / 2. In addition, these times (t ₀ and t
The measurement of _E ) is managed by the timing means 68 of FIG.

Here, PGT (t ₀ )> PIN
_{When 2} (t ₀ ), nitrogen is excreted 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 when nitrogen is discharged, the half-saturation time is long and it takes time to discharge, and conversely, when nitrogen is absorbed, the half-saturation time is It is short and the time required for absorption is short compared to the time required for discharge.

In this way, the simulation of the amount of nitrogen in the body can be performed more strictly. Therefore, if the allowable value of the partial pressure of nitrogen in the body is set, a certain water depth (water pressure)
It is necessary to accurately determine the time required to reach this allowable value (non-decompression diving time 302) and the time required for the internal nitrogen partial pressure to drop to an equilibrium value on the water surface (internal nitrogen discharge time 201). it can. In this way, the information processing apparatus 1 for divers according to the present embodiment has the non-decompression diving time 3
A diving time deriving means 92 for deriving 02 and the body nitrogen discharge time 201 as diver safety information, and a body nitrogen discharge time deriving means 91 are configured. Diving time deriving means 92 and body nitrogen excretion time deriving means 9
1 is a CPU 51 and a ROM 5 shown in FIG.
3. It is realized as a function of the RAM 54.

[Basic description of each mode] The information processing apparatus 1 for divers configured as described above has the following modes (time mode ST1, surface mode ST2, planning mode ST3, Setting mode ST4, diving mode ST5, log mode ST
Use in 6) is possible.

(Time Mode ST1) Time Mode ST1
Is a function for carrying on land when no switch operation is performed and nitrogen in the body is in an equilibrium state. The liquid crystal display panel 11 has a current date 100, a current time 101, and an altitude rank 102 (see FIG. 1). ./No mark is displayed when the altitude rank is rank 0.). The altitude rank 102 automatically measures the altitude of the current location and displays the altitude at three ranks. The display of the current time 101 is indicated by the blinking of the colon and the current time 1
01 is notified. For example, in the state shown in FIG. 5, it is displayed that it is 10:06 on December 5 at present.

In the time mode ST1, when the switch A is pressed, the mode shifts directly to the planning mode ST3, and when the switch B is pressed, the mode shifts directly to the log mode ST6. When the switch B is pressed for 5 seconds while the switch A is pressed after the switch A is pressed, the mode shifts to the setting mode ST4.

The time mode ST1, the surface mode ST2 described below, and the planning mode ST
3. In any of the setting mode ST4 and the log mode ST6, when it is detected that water has entered through the water entry monitoring switch 30 shown in FIGS. If it can be confirmed that the above condition is satisfied, the process automatically shifts to the diving mode ST5. At this time, if there is an abnormality in the sensor or the like, the fact is notified by an alarm sound or the like from the sound notification device 37 shown in FIG.

(Surface Mode ST2) The diving information processing apparatus 1 automatically shifts to the surface mode ST2 when the conducting water entry monitoring switch 30 becomes insulated after the end of the diving. The surface mode ST2 is a function for carrying on the land until 48 hours have passed since the last dive. In the surface mode ST2, in addition to the data (current month and day 100, current time 101, altitude rank) displayed in the time mode ST1, an indication of a change in the amount of nitrogen in the body after the end of the dive is displayed. That is, the time until the excess nitrogen dissolved in the body is exhausted and the state of equilibrium is reached is displayed as the body nitrogen exhausting time 201. This body nitrogen excretion time 201
Counts down the time to equilibrium.
After the internal nitrogen excretion time 201 becomes 0 hour and 00 minutes, there is no display. Further, the elapsed time after diving is displayed as the water surface pause time 202, and the water surface pause time 202
In the diving mode ST5, when the water depth becomes shallower than 1.5 m in the diving mode ST5, the timing is started as the end of the diving, and after no more than 48 hours, no display is made. Accordingly, in the diver's information processing apparatus 1, the surface mode ST2 is maintained on land until the elapse of 48 hours after the end of the diving, and thereafter, the time mode S
T1. In addition, in the state shown in FIG. 5, it is displayed that it is 11:58 on December 5 and that 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 the diving performed so far corresponds to four in the body nitrogen graph 203,
The time from this state until the body is exhausted with excess nitrogen to reach an equilibrium state (body nitrogen removal time 201) is displayed as, for example, 10 hours and 55 minutes.

In the surface mode ST2, pressing the switch A shifts directly to the planning mode ST3, and pressing the switch B shifts directly to the log mode ST6. When the switch B is pressed for 5 seconds while the switch A is pressed after the switch A is pressed, the setting mode S
Move to T4.

(Setting mode ST4) Setting mode ST4
Is a function for setting ON / OFF of a warning alarm and setting of a safety level in addition to the setting of the date 100 and the current time 101. In this setting mode ST4,
The current month and day 100, year 106, current time 101, safety level (not shown), alarm ON / OFF (not shown), and altitude rank are displayed. Of these items, the safety level is usually And a level for performing a decompression calculation on the premise of moving to a place at an altitude rank one rank higher after diving. The ON / OFF of the alarm is a setting for setting whether or not to sound various warning alarms from the alarm device 37. If the alarm is set to OFF, the alarm does not sound.

In this setting mode ST4, every time the switch A is pressed, the setting items are switched in the order of hour, second, minute, year, month, day, safety level, alarm ON / OFF, and the display of the corresponding portion blinks. I do. At this time, when the switch B is pressed, the numerical value or character of the setting item changes, and when the switch B is continuously pressed, the numerical value or character changes quickly. Alarm ON / O
When the switch A is pressed while the FF is blinking, the mode returns to the surface mode ST2 or the time mode ST1. If neither of the switches A and B is pressed for one to two minutes, the surface mode ST2 or the time mode ST
Return to 1 automatically.

Further, the diver may be, for example, a respiratory gas composed of air having a mixture ratio of oxygen and nitrogen of 21:79, a respiratory gas having a mixture ratio of oxygen and nitrogen of 32:68, and a mixture of oxygen and nitrogen having a mixture ratio of 36. : Perform scuba diving while carrying the optimal cylinder from among cylinders filled with 64 breaths. Here, the result of deriving the amount of nitrogen in the body and the non-decompression diving time is different depending on which respiratory gas is used. For this reason, in the setting mode ST4, it is initially set to use breathing air composed of air having a mixing ratio of oxygen and nitrogen of 21:79, but the setting is made such that the mixing ratio of oxygen and nitrogen is 32:68. It is possible to switch to the respiratory air or the respiratory air in which the mixture ratio of oxygen and nitrogen is 36:64. That is, in the setting mode ST4, the setting item is set to breathing air, and in this state, when the switch B is pressed, the numerical value representing the oxygen mixture ratio goes up each time, so that a predetermined numerical value is displayed. Confirm it.
As a result, the setting of the mixing ratio of the respiratory gas is switched from the initially set condition of the respiratory gas in which the mixing ratio of oxygen and nitrogen is 36:64 to the mixing ratio newly recorded in the RAM 35. Thereafter, various information is derived based on the new mixture ratio recorded in the RAM 35. Further, when it is set to use the respiratory gas having a mixture ratio of oxygen and nitrogen of 21:79, the liquid crystal display panel 11 displays 21% (oxygen mixture ratio of respiratory gas 309).

(Diving Mode ST5) The diving mode ST5 is a mode during diving. In the non-decompression diving mode ST51, the current water depth 501, diving time 502,
This function displays information necessary for diving, such as the maximum water depth 503, the no-decompression diving time 302, the in-vivo nitrogen graph 203, and the altitude rank.

For example, in the state shown in FIG. 5, 12 minutes have elapsed since the start of the dive, the water depth is 16.8 m, and the fourth display on the liquid crystal display panel 11 shown in FIG. In the area 114, it is displayed that the non-decompression diving can be continued for another 42 minutes at this water depth.
Further, it is displayed that the maximum water depth to date is 20.0 m, and furthermore, the liquid crystal display panel 11 shown in FIG.
In the sixth display area 116, it is displayed that the current amount of nitrogen in the body is at a level at which four marks of the body nitrogen graph 203 are lit.

In the diving mode ST5, since the rapid ascent causes decompression sickness, the current ascent speed is obtained every 6 seconds, and the ascent speed is compared with the ascent value corresponding to the current water depth. If the ascent speed obtained this time is faster than the ascent value of the ascent speed, an alarm sound is issued from the sounding device 37 at a frequency of 4 kHz (ascent speed violation warning).
Is displayed in the seventh display area 117 of the liquid crystal display panel 11 shown in FIG. 1A so that the display of “SLOW” and the display of the current water depth are made at a frequency of 1 Hz so that the floating speed is reduced. Flashes alternately to warn of ascent speed violation. Further, the vibration generator 38 warns the diver by vibration that the flying speed is violated. When the ascent speed is reduced to a normal level, the ascent speed 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 in the current time display mode ST52 only while the switch A is kept pressed. In the state shown in FIG. 5, it is displayed that the current time is 10:18 and the water temperature is 23 ° C. Thus, the 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 only the data necessary for diving is always displayed on the small display surface (non-decompression diving mode ST51), the current time 101 can be displayed as needed (current time display mode ST52). It is convenient. Moreover, even in the diving mode ST5, the switch operation is used for switching the display, so that information desired by the diver can be displayed at an appropriate timing.

During the dive mode ST5, when the water ascends to a position shallower than 1.5 m, the diving is considered to be completed, and when the conducting water monitoring switch 30 is insulated. The mode automatically shifts to the surface mode ST2. During this time, the dive results (diving date, dive time, various data such as maximum depth) are taken as one dive operation from when the water depth becomes 1.5 m or less to when it becomes shallower than 1.5 m. It is stored and held in the RAM 54. In addition, during the current dive, the ascent speed warning
If there is more than one dive, this is also recorded as a diving result.

The information processing apparatus 1 for divers of the present embodiment
Although the configuration is based on non-decompression diving, if a decompression diving condition 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 dive time 502, the body 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.
It is displayed that four minutes have passed and the water depth is 29.5 m. In addition, since the amount of nitrogen in the body exceeds the maximum allowable value and is dangerous, the water depth is 3m while keeping the safe ascent speed.
Is displayed, and an instruction to stop decompression for 1 minute is displayed. Further, an instruction is displayed that a safe ascent speed should take at least 5 minutes to reach the water surface. Further, the fact that the amount of nitrogen in the body is currently increasing is displayed by an upward arrow 508. Then, the diver floats after stopping the decompression based on the above display contents. During the decompression, the downward arrow 509 indicates that the amount of nitrogen in the body is on the decrease.

(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 diving deeper than 1.5m in the diving mode ST5 for 3 minutes or more. Such diving data is sequentially stored as log data for each dive, and up to 10 log data are stored and retained, and when diving more, older data is deleted in order from the oldest, and the latest 10 dive data are always stored. Diving is stored.

In the log mode ST6, the log data is displayed on two screens switched every four seconds. First
In the screen ST61, the dive date 601 and the average water depth 50
9. The dive start time 603, the dive end time 604, the altitude rank, and the in-vivo nitrogen graph 203 when the dive ends are displayed. On the second screen ST62, a log number 605, which is a dive number on that day, a maximum water depth 608, a dive time 606, a water temperature 607 at the maximum water depth, an altitude rank,
A graph 203 of the in-vivo nitrogen when the diving is completed is displayed. For example, in the state shown in FIG. 5, when the altitude rank is 0, the second dive on December 5 is dive 1
After starting at 0:07, it ends 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 26.0 m, and the water temperature at the maximum water depth was 23 ° C. After the dive was completed, the nitrogen in the in-vivo nitrogen graph 203 dissolved into the body for four times. 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.

In the log mode ST6, when the speed violation warning is given twice or more during the currently displayed dive, the fact is notified, for example, by the liquid crystal display panel 11.
In the seventh display area 117, “SLOW” is displayed.

In the log mode ST6, every time the switch B is pressed, the data is switched from new data to old data. After the oldest data is displayed, the mode shifts to the time mode ST1 or the surface mode ST2. If the switch B is kept pressed for 2 seconds or more during the operation, the mode shifts to the time mode ST1 or the surface mode ST2. Furthermore, even when neither of the switches A and B is pressed for 1 to 2 minutes, the mode automatically returns to the surface mode ST2 or the time mode ST1, so that it is convenient because there is no need to perform the switch operation each time. On the other hand, when the switch A is pressed, the process directly shifts to the planning mode ST3. As described above, in the present embodiment, direct transition can be made between any one of the planning mode ST3, the surface mode ST2, and the log mode ST6 by a single switch operation.

(Planning Mode ST3) In order to realize the planning mode ST3, the information processing apparatus 1 for divers of the present embodiment is configured as follows.

As shown in FIG. 3, the diver's information processing apparatus 1 has a scheduled water surface stop time 941 from the current time to the next dive, and a time when the next dive is to be performed after the elapse of the scheduled water surface stop time 941. A condition setting means 94 for externally setting a diving profile 940 such as a predetermined water depth value and a nitrogen mixing ratio 942 of a respiratory gas to be used for the diving is configured. The deriving means 60 can also calculate the amount of nitrogen 601 in the body when resting on land for the scheduled water surface break time 941 and resuming diving after this rest.

That is, in the diving mode ST5, the body nitrogen deriving means 60 operates as described above.
8 based on the measurement result obtained by the measurement unit 8, the measurement result obtained by the water depth measurement unit 61, and the nitrogen mixture ratio in the respiratory gas, the current amount of nitrogen 601 in the body which is excessively accumulated in the body of the diver while diving and at rest on the water surface is derived. At the same time, the derivation procedure is theoretically the same, and in the planning mode ST3,
Current nitrogen content in the body 601 and scheduled water surface break time 94
1. Based on the diving profile 940 such as the nitrogen mixing ratio 942 in the respiratory air and the planned water depth,
In addition, the system is configured to calculate the amount of nitrogen 601 in the body when the next dive is performed after the suspension of the water surface. However, since the water surface rest is a land-based rest, in calculating the amount of nitrogen 601 in the body during that time, since the respiratory air is air and the water depth value is 0 m, excess nitrogen is always discharged from the body. It is in. The condition setting means 94
Are the CPU 51, ROM 53, RAM 54 shown in FIG.
And the switches C, D, E, and F shown in FIG.

In this embodiment, the dive time deriving means 92 is provided by the body nitrogen deriving means 60.
Based on the calculation result of 1, the time from when the water depth reaches the scheduled water depth value to when the body nitrogen amount 601 reaches the allowable value can be calculated as the no-decompression diving time 302.

Here, the condition setting means 94 sets only the final expected water depth value 946 as the diving profile 940, assuming that the vehicle will dive at a stretch to the target water depth position after the elapse of the scheduled water surface stop time 941. And
Assuming that the water temporarily stays on the way to the final expected water depth 946, the final expected water depth 946, the temporarily expected water depth 947, and the water depth position corresponding to the temporarily expected water depth 947 will be described. Estimated time to stay at the airport 94
8 may be set. In the case of the former setting, the calculation result of the amount of nitrogen in the body 601 at the time when the scheduled water surface break time 941 has elapsed is displayed on the liquid crystal display panel 11 as the in-body nitrogen graph 203 (see FIG. 7A). ,
In the case of the latter setting, the final expected water depth 9
The calculation result of the amount of nitrogen in the body 601 at the time when the water reaches the water depth position corresponding to 46 is displayed on the liquid crystal display panel 11 as the in-vivo nitrogen graph 203 (see FIG. 7B).

In the diver's information processing apparatus 1 configured as described above, immediately after shifting to the planning mode ST3, as shown in FIG.
m is displayed, and in the fourth display area 114, 0 min displayed there is in a blinking state. Each time the switch E is pressed from this state, 21 in the third display area 112
The display is switched to a state in which the display of% blinks, and the display of 0m in the first display area 111 blinks.

Here, the blinking of the display means that the corresponding condition is set. That is, immediately after shifting to the planning mode ST3, the display of 0m is blinking in the fourth display area 114, so that the scheduled on-shore rest time (scheduled water surface stop time 941) is input in the fourth display area 114. It is in a state to do. Each time the switch C is pressed while the display of 0 min in the fourth display area 114 is blinking, the numerical value increases by 1 min from 0 min. If the switch C is kept depressed, it is moved up quickly. Each time the switch D is pressed, the numerical value goes down from 0 min by 1 min.
If the switch D is kept depressed, the decrement is performed quickly. However, when the switch D is kept depressed, the display switches to 999 min, and then decrements to 998 min, 997 min... To go. The setting of the numerical values using the switches C and D is the same when setting the items described below, and the description thereof is omitted.

In the fourth display area 114, for example, 13 mi
If the switch E is pressed when "n" is displayed, the setting of the scheduled water surface stop time 941 is determined to be 13 minutes, and the display of 21% of the third display area 112 is switched to a blinking state.

In this state, the oxygen mixture ratio 309 is input in order to set the nitrogen mixture ratio 942 of the respiratory gas used during diving. Therefore, when it is desired to set the nitrogen mixture ratio 942 of the respiratory gas to 68% in the planning mode ST3, the third display region 113 displays the oxygen mixture ratio 309 of 32%.
Is displayed, and the switch E is pressed. As a result, after the oxygen mixing ratio 309 of the respiratory gas is determined to be 32%, the display of 0 m in the first display area 111 switches to a state of blinking.

This state corresponds to the above-mentioned scheduled water surface stoppage time 94.
This is a state in which the planned depth of the dive to be resumed after 1 has elapsed is set. Therefore, it is assumed that 15 m is displayed in the first display area 111.

However, the planned water depth value is the scheduled water surface suspension time 9
It is assumed that only the final expected water depth 946 is set assuming that the vehicle will dive to the target water depth at a stretch after 41 elapses, and that the vehicle will temporarily stay on the way to the final expected water depth 946. And the final expected water depth 9
46, there is a case where the scheduled staying water depth value 947 and the scheduled staying time 948 at the water depth position corresponding to the scheduled staying water depth value 947 are set, but the first display area 111 is displayed as 15 m. When the switch F is pressed in this state, all the condition settings are completed, and the 15 m displayed in the first display area 111 is determined as the final expected depth of water 946.

As a result, the scheduled water surface break time 941 becomes 13
min, all the conditions are determined as the diving conditions after the water surface is stopped, such that the oxygen mixture ratio 309 of the respiratory gas and the final expected water depth value 946 are 32% and 15 m, respectively. Therefore, the body nitrogen amount deriving means 60 calculates the body nitrogen amount 601 at the present time and the scheduled water surface pause time 9 set here.
41, the amount of nitrogen in the body 601 is calculated based on the expected final water depth 946 and the oxygen mixing ratio 309 of the respiratory gas. No decompression diving time 302
Is calculated as 88 min. Therefore, as shown in FIG. 7 (A), the liquid crystal display panel 11 has a water depth value 946 expected to reach the final reach in each of the first to fourth display areas 111, 112, 113 and 114, and is capable of non-decompression diving. Time 302,
Respiratory oxygen mixing ratio 309 and scheduled water surface break time 9
41 is 15m, 88min, 32%, 13mi respectively
It is displayed as n. In the sixth display area 116, three in-vivo nitrogen graphs 203 are displayed as the calculation results of the in-vivo nitrogen amount 601 at the time when the water surface suspension at the scheduled water surface suspension time 941 is completed.

As described above, in the information processing apparatus 1 for divers of the present embodiment, in the planning mode ST3, the scheduled water surface stop time 941 from the current time to the next dive, the final expected water depth 946 at the next dive, and the breathing air When the oxygen mixture ratio 309 is set, based on these setting conditions,
The body nitrogen amount deriving means 60 calculates the body nitrogen amount 601,
Based on the calculation result, the dive possible time deriving means 92 calculates the non-decompression dive possible time 302. Therefore, the diver can set a dive schedule that allows the next dive without diving by looking at the calculation result of the no-decompression dive time 302 displayed in advance. If the setting is changed to a different breathing air with a different nitrogen mixing ratio 942, the non-decompression diving possible time 302 when the newly set breathing air is used in the next dive is calculated and displayed. A diving schedule that takes advantage of the advantage of being able to dive for a long period of time if small breathing air is used can be set, which is convenient.

On the other hand, in the state shown in FIG. 6, when “0 min” is initially blinking, “12 m” is displayed in the first display area 111 by a switch operation, and the switch E is pressed. 12m displayed in the display area 111 of
Is determined as the temporarily retained water depth value 947, and the display of 13 min flashes in the fourth display area 114. This state is a state in which the temporary stay scheduled time 948 is set. Therefore, 30 minutes are displayed in the fourth display area 114.
Is displayed, and then the switch E is pressed twice to return to the state where the display of 12 m in the first display area 111 blinks. Here, when 15 m is displayed in the first display area 111 and the switch F is pressed, all the condition settings are completed, and the 15 m displayed in the first display area 111 at this time is: The final arrival water depth 946 is determined.

As a result, the scheduled water surface break time 941 becomes 13
min, in the diving after the water surface is stopped, the oxygen mixing ratio 309 of the respiratory gas, the scheduled staying water depth 947, the scheduled staying time 948, and the expected final arrival depth 946 are 32%, 12m, 30min, and 15m, respectively. Conditions are determined. Therefore, the body nitrogen amount deriving means 60 calculates the body nitrogen amount 601 at the present time, the scheduled water surface stop time 941, the oxygen mixing ratio 309 of the respiratory gas set here, the temporarily stored scheduled water depth value 947, the temporarily stored scheduled time 948, And the amount of nitrogen 601 in the body is calculated based on the expected depth of water 946, and based on the calculation result, the dive available time deriving means 9 is calculated.
2 is calculated that the no-decompression diving time 302 at the final expected water depth value 946 is 30 min. Therefore, as shown in FIG. 7B, in the liquid crystal display panel 11, the first to fourth display areas 111, 112, 113, and 114 each have a final expected depth of water 946, and a non-decompression diving is possible. The time 302, the oxygen mixing ratio 309 of the respiratory gas, and the scheduled water surface stop time 941 are 15 m, 30 min, 32%, 13
min is displayed. Further, in the sixth display area 116, four in-vivo nitrogen graphs 203 are displayed as the amount of in-vivo nitrogen 601 at the time of reaching the expected final water depth value 946.

As described above, non-decompression diving is possible in addition to the scheduled water surface stoppage time 941 from the current time to the next dive, and the final expected depth of water 946 at the time of the next dive, and the conditions for temporary stagnation during the dive. By calculating the time 302, the diver can make a more specific dive schedule for the next dive.

When the dive conditions are set as shown in FIG. 6 and the scheduled water surface stop time 941 is set to 0 min, the dive is immediately resumed as shown in FIG. No-decompression diving time 3 corresponding to the planned water depth
02 and the like are displayed.

Here, when the transition to the planning mode ST3 is performed from the time mode ST1, since the initial diving plan is such that there is no excessive nitrogen accumulation in the body due to past diving, the in-vivo nitrogen graph 203 is set to 0. Assuming that diving is started immediately from this state, when the final expected water depth value 946 is 15 m, the non-decompression diving time 302
Is displayed as 66 minutes. Therefore, it can be seen that non-decompression diving is possible up to less than 66 minutes at a depth of less than 15 m. On the other hand, if the transition to the planning mode ST3 has been made from the surface mode ST2,
Since the body nitrogen graph 203 is lit for four,
Dive will be performed from the state where there is excessive nitrogen accumulation in the body due to past diving, and if you start diving immediately from this state, if the maximum water depth is 15 m, the non-decompression diving time 302 will be Displayed as 49 minutes.

In this embodiment, in this planning mode ST3, if the switch A is kept pressed for 2 seconds or more, the mode directly shifts to the surface mode ST2. When there is no switch operation for a predetermined period, the surface mode S
Automatically shift to T2 or time mode ST1,
This is convenient because there is no need to perform a switch operation each time. When the switch B is pressed, the mode shifts directly to the log mode ST6.

[0083]

As described above, in the information processing apparatus for divers according to the present invention, when the scheduled water surface stop time from the current time to the next dive and the scheduled water depth value at the next dive are set, these setting conditions are satisfied. Based on this, the in-vivo inert gas amount deriving means calculates the in-vivo inert gas amount after rest and the in-vivo inert gas amount at the time of the next dive without actually taking a rest, and this calculation result Based on the above, the dive time deriving means calculates the non-decompression dive possible time in the next dive. Therefore, the diver can set a dive schedule that allows the diver to perform the next dive without suffering from diving by looking at the calculation result of the no-decompression diving time displayed on the display unit.

[Brief description of the drawings]

FIG. 1A is a plan view showing a device main body and a 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 main body viewed from 6:00 on a wristwatch. 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 diagram showing a nitrogen content deriving means and a dive available time deriving means included in a diver's information processing apparatus to which the present invention is applied;
FIG. 3 is a functional block diagram showing a configuration of a condition setting unit and the like.

FIG. 4 is an explanatory diagram showing the meaning of a half-saturation time used in deriving a body nitrogen amount and a body nitrogen excretion time in the information processing apparatus for divers to which the present invention is applied.

FIG. 5 is a flowchart showing functions of a diver's information processing apparatus to which the present invention is applied.

FIG. 6 is an explanatory diagram showing a display mode immediately after shifting to a planning mode in the information processing apparatus for divers to which the present invention is applied.

FIGS. 7A and 7B are explanatory diagrams each showing a display mode of a planning mode in a diver's information processing apparatus to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Divers information processing device 5 ... Operation part 10 ... Display part (display means) 11 ... Liquid crystal display panel 34 ... Pressure sensor 37 ... Sound emitting device 38 ... Vibration Generator 50 Control part 51 CPU 53 ROM 54 RAM 60 Nitrogen content deriving means 61 Water depth measuring means (water pressure measuring means) 62 Breathing air Nitrogen partial pressure calculation means 63 ・ ・ ・ Respiratory gas nitrogen partial pressure storage means 64 ・ ・ ・ Intracorporeal nitrogen partial pressure calculation means 65 ・ ・ ・ Internal nitrogen partial pressure storage means 67 ・ ・ ・ Saturation time selection means 68 ・ ・ ・ Timekeeping Means 91 ··· Nitrogen discharge time deriving means 92 · Diving possible time deriving means 94 · Condition setting means A, B, C, D, E, F · Switch ST1 · Time mode ST2 ·・ ・ Surface mode ST3 ・ ・ ・ Plan Bridging mode ST4 ··· setting mode ST5 ··· diving mode ST6 ··· log mode

Continued on the front page (72) Inventor Satoshi Chiba 3-3-5 Yamato, Suwa-shi, Nagano Prefecture Seiko Epson Corporation

Claims (5)

[Claims] 1. A water depth measuring means for measuring the water depth, a time measuring means for measuring the elapse of time during diving and when the water surface is at rest, a measurement result of the time measuring means, a measurement result of the water depth measuring means, and a breathing air. An in-vivo inert gas amount deriving unit capable of deriving an in-vivo inert gas amount excessively accumulated in the body of a diver during a dive or at rest on the basis of a mixing ratio of the inactive gas; Based on the amount of in-vivo inert gas derived by the amount deriving means, the time from when the diver reaches the water depth position to when the in-vivo inert gas reaches the allowable value when the diver continues to stay at the predetermined water depth position is determined. Diving possible time deriving means derived as non-decompression diving possible time,
A display unit capable of displaying the no-decompression diving possible time derived by the dive possible time deriving means, a scheduled water surface suspension time from the current time to the next dive, and a condition setting means capable of setting a planned water depth value at the next dive; The in-vivo inert gas amount deriving means, based on the in-vivo inert gas amount at the present time, the scheduled surface time of the water surface, the mixing ratio of the inert gas in the respiratory gas, and the scheduled water depth value, While calculating the inert gas amount in the body when the next dive is started after the water surface stoppage of the scheduled water surface stop time and the dive is to be continued at the water depth position corresponding to the predetermined water depth value, the inert gas amount in the body is calculated. The dive available time deriving means calculates the no-decompression dive available time at the next dive based on the calculation result, and the calculation result of the no-decompression dive available time is displayed on the display unit. Characterized by Divers information processing device. 2. The divers according to claim 1, wherein the display unit is configured to display a calculation result of the amount of inert gas in the body at the time when the scheduled water surface stop time has elapsed. Information processing device. 3. The condition setting means according to claim 1, wherein the condition setting means determines a final expected depth of water at the time of the next dive after passing through the surface of the scheduled time of surface stop, and temporarily reaches the final expected depth of water during the dive. Is set to be able to set the temporary retention scheduled water depth value that temporarily stays, and the temporary retention scheduled time at the temporary retention scheduled water depth value, the body inert gas amount deriving means includes: Based on the scheduled water surface stop time, the mixing ratio of the inert gas in the respiratory gas, the temporary residence scheduled water depth value, the temporary residence scheduled time, and the final arrival expected water depth value, the water surface suspension of the scheduled water surface suspension time was performed. Starting the next dive later and calculating the amount of inert gas in the body when it is assumed to stay at the water depth position corresponding to the final expected water depth value, based on the calculation result of the amount of inert gas in the body, diving Divers information processing, wherein the active time deriving means calculates a non-decompression diving possible time at the next dive, and the calculation result of the non-decompression diving possible time is displayed on the display unit. apparatus. 4. The display unit according to claim 3, wherein the display unit is configured to display a calculation result of the amount of inert gas in the body at a time when the water reaches a water depth position corresponding to the water depth value to be finally reached. An information processing device for divers. 5. The condition setting means according to claim 1, wherein the condition setting means also sets a predetermined ratio of the inert gas mixture ratio in the respiratory gas to be used in the next dive after the surface stoppage of the scheduled surface stoppage time. An information processing apparatus for divers, wherein the information processing apparatus is configured to be changeable.