JP3520398B2 - 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, the present invention relates to a technique for deriving safety information for a diver to perform a safe dive based on the amount of inactive gas in the body that is dissolved in the body in such an information processing apparatus.

[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 inert gas in the body is grasped from this magnitude relationship, and when it goes up to land after the end of the dive, the time required for the amount of inert gas in the body to return to the equilibrium value on land (internal gas discharge time) is displayed. It is like this. Therefore, the diver who sees this display restarts the dive after taking a rest on the land for an appropriate time when diving again, so do not dive multiple times a day without suffering from decompression sickness. You can

[0008]

However, in the conventional information processing apparatus for divers, since the inert gas discharge time in the body is only displayed after landing, it is necessary for the diver to perform safer diving. Even if a safe stop is made at a relatively shallow water depth during diving, it is not possible to determine how long and at what time it should be stopped at the safe stop position. In addition, the diver cannot know how much time has elapsed since the start of the safety stop. For this reason,
Divers rely on experience and memory to make a safe stop, which is insufficient as a function to protect the safety of divers.

In view of the above problems, the object of the present invention is to
Information for divers that enables divers to objectively and reliably determine how long and when to stop there safely during a dive so that they can be more reliably protected from decompression sickness It is to provide a processing device.

[0010]

In order to solve the above problems, in a diver's information processing apparatus according to the present invention, a water depth measuring means for measuring the water depth, a time measuring means for measuring elapsed time, and a measurement of the time measuring means. An inert gas amount deriving means for deriving the amount of the inert gas accumulated in the body in the dive based on the result and the measurement result of the water depth measuring means, and the in-body inertness derived by the inert gas amount deriving means Based on the gas amount and the current water depth value, when the diver continues to stop at the water depth position corresponding to the current water depth value, the time until the inert gas is discharged from the body and reaches the target in-body inert gas amount It has an in-body inert gas discharge time deriving means for deriving as an active gas discharge time, and a display means for displaying the inert gas discharge time derived by the in-body inert gas discharge time deriving means in a dive. The inert gas discharge time is defined as the amount of the inert gas in the target body when the amount of the inert gas in the body is discharged from the body by a predetermined amount when the diver continues to stop at the water depth position. It is characterized in that it is the time until the inert gas in the body reaches the amount of the inert gas.

In the present invention, the inert gas discharge time when the diver continues to stop at the water depth position corresponding to the current water depth value is derived based on the current amount of inert gas in the body and the current water depth value, and This inert gas discharge time is also displayed during diving. Therefore, when a diver makes a safe stop at a relatively shallow depth of water, he or she should look at the displayed inert gas discharge time and rely on experience and memory to know how long and at what depth to stop at this depth. You can make an objective and reliable decision without

Further, in the present invention, the water depth measuring means for measuring the water depth, the time measuring means for measuring the passage of time, the measurement result of the time measuring means, and the accumulation result in the body in the dive based on the measurement result of the water depth measuring means. Inert gas amount derivation means for deriving the amount of inert gas, and the water depth set value based on the body inert gas amount derived by the inert gas amount derivation means and the preset water depth set value Inert gas discharge time, which is derived as the inert gas discharge time, which is the time it takes for the inert gas to be discharged from the body to reach the target amount of inert gas in the body when the diver continues to stop at the water depth position corresponding to It has a derivation means and a display means capable of displaying the inert gas discharge time derived by the body inert gas discharge time derivation means in the dive, wherein the inert gas discharge time is the die at the water depth position. When the inactive gas in the body is exhausted from the body by a predetermined amount when the operation is stopped, the inactive gas in the body reaches the target inactive gas amount as the target inactive gas amount. It is characterized in that it is time to. In the present invention, instead of the current water depth position, when the diver continues to stop at the water depth position corresponding to the preset water depth setting value, the inert gas is discharged from the body to reach the target in-body inert gas amount. Since the time until is derived as the inert gas discharge time, and the inert gas discharge time is also displayed during diving, how long the diver will safely stop at the position corresponding to the above water depth setting value, Objectively without relying on experience or memory to decide whether to stop
And you can make a reliable decision.

Here, by configuring the water depth setting means for externally setting the water depth setting value to an arbitrary value, the water depth setting value can be changed in consideration of the physical condition of the diver. preferable.

In such a configuration, when the current water depth becomes shallower than the water depth set value based on the measurement result of the water depth measuring means, the diver may be informed of that fact. preferable. This is to prevent the stop position from becoming too shallow when the diver actually stops safely.

Further, according to the present invention, when the amount of the inert gas in the body reaches the target amount of the inert gas in the body based on the measurement result of the means for deriving the amount of the inert gas, the informing means is informed to the diver. It is preferable to be configured. With this configuration, the diver can know that the sufficient safety stop has been completed.

As such notification means, the display means itself can be used, or a sounding device for making a sound notification,
It is possible to use a vibration generator or the like that gives a notification by vibration.

In the present invention, the inert gas discharge time is, for example, the amount of the inert gas in the body when the diver continues to stop at the current water depth position or the water depth position corresponding to the water depth setting value. The target amount of inert gas in the body is derived as the time required to reach the equilibrium value at the water depth position.

On the other hand, when the diver continues to stop at the current water depth position or the water depth position corresponding to the water depth setting value, the amount of inert gas preset as the target amount of inert gas in the body is set. The time until the amount of the inert gas in the body reaches the value may be derived as the inert gas discharge time. With this configuration,
An inert gas amount setting means for externally setting the inert gas amount set value to an arbitrary value is configured. Further, when the diver continues to stop at the current water depth position or a water depth position corresponding to the water depth setting value, the gas amount when the body inert gas is discharged from the body by a predetermined amount The inert gas amount may be used, and the time until the in-body inert gas reaches the target in-body inert gas amount may be derived as the inert gas discharge time. With this configuration, the inert gas discharge time is derived and displayed as a relatively short time, which is suitable for use as a guideline for safe shutdown.

Here, it is preferable that the display means displays a countdown of the inactive gas discharge time in the body.

In the present invention, the water depth measuring means for measuring the water depth, the time measuring means for measuring the passage of time, the measurement result of the time measuring means and the result of the water depth measuring means are accumulated in the body in the dive. An inert gas amount deriving means for deriving the amount of the inert gas, and a water depth position corresponding to the current water depth value based on the body inert gas amount and the current water depth value derived by the inert gas amount deriving means. In the body inert gas discharge time derivation means for deriving as the inert gas discharge time the time until the inert gas is discharged from the body and reaches the target body inert gas amount when the diver continues to stop at, And a display unit capable of displaying the inert gas discharge time derived by the in-body inert gas discharge time deriving unit in the dive, wherein the display unit displays the current amount of the inert gas in the body in a plurality of graphs. We intend to indicate whether corresponding to any tank, the inert gas discharge time derivation means,
The amount of inactive gas in the body corresponding to a predetermined rank position in the graph display is set as the target inactive gas amount, and the time until the inactive gas in the body reaches the target inactive gas amount It is characterized in that it is configured to be derived as time. Furthermore, in the present invention, the water depth measuring means for measuring the water depth, the time measuring means for measuring the passage of time, the measurement result of the time measuring means, and the information accumulated in the body in the dive based on the measurement result of the water depth measuring means. An inert gas amount deriving means for deriving the amount of active gas, and a diver at a water depth position corresponding to the current water depth value based on the body inert gas amount and the current water depth value derived by the inert gas amount deriving means. In-body inert gas discharge time deriving means for deriving, as the inert gas discharge time, the time taken for the inert gas to be discharged from the body and reach the target amount of inert gas in the body when stopped continuously; A display means capable of displaying the inert gas discharge time derived by the gas discharge time deriving means in the dive, wherein the display means indicates the present amount of the inert gas in the body in a plurality of ranks by a graph. The inert gas discharge time deriving means displays the gas amount when the inert gas in the body is discharged by an amount corresponding to a predetermined rank number in the graph display. The amount of the inert gas in the body is set, and the time until the inert gas in the body reaches the target amount of the inert gas in the body is derived as the inert gas discharge time. When using the graph display in this way, it is better for the diver to grasp the change by displaying which of the multiple ranks the current inert gas amount corresponds to, rather than making detailed changes to the graph. It's easy to do.

In the present invention, there is further provided dive time derivation means for deriving a time during which no decompression diving can be continued at the present water depth position based on the amount of the inert gas in the body derived by the inert gas amount derivation means. It is preferable that the display means is configured to also display the non-decompression diving possible time derived by the diving possible time deriving means in the dive.

In the present invention, the allowable water depth value for deriving is further derived based on the amount of inert gas in the body derived by the inert gas amount deriving means while maintaining the no-decompression diving state. It is preferable that the display means has a derivation means, and the display means is also configured to display the allowable water depth value derived by the allowable water depth value derivation means during diving.

In the present invention, the inert gas is, for example,
Any of nitrogen gas, rare gas, or a mixed gas of nitrogen gas and helium can be applied.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. It should be noted that before describing each form, a configuration common to each form will be described, and thereafter, features of each form in the diving mode will be described.

[Basic Configuration] (Overall Configuration) FIGS. 1 (A) and 1 (B) are a plan view showing a device body and a part of an arm band of the diver's information processing apparatus of the present embodiment, respectively, and one at 6 o'clock. It is a side view of the apparatus main body as viewed from above. 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 the amount of nitrogen accumulated in the body during diving (the amount of inert gas in the body / nitrogen partial pressure in the body). Is measured and the resting time to be taken on land after diving is displayed from this measurement result. 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, and the wristbands 3 and 4 are connected to the wristwatch. Similarly, it can be attached to the arm for use. The device body 2 is an upper case 2
1 and the lower case 22 are fixed in a completely watertight state by a method such as screwing, and a substrate (not shown) on which various electronic components and the like are mounted is housed inside.

A display section 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, the operation unit 5 is used to select and switch each mode performed by the divers information processing apparatus 1 and set various conditions.

At the 9 o'clock side of the wristwatch on the upper surface side of the apparatus main body 2, there is formed a water entry monitoring switch 30 using a moisture detection sensor for monitoring whether or not diving has started. The water entry monitoring switch 30 includes two electrodes 31 and 32 exposed on the upper surface of the apparatus body 2,
These electrodes 31 and 32 are conducted by seawater or the like, and the electrodes 3
It is judged that the dive is started when the resistance value between 1 and 32 becomes small. However, this water monitoring switch 30
Is only used for detecting that water has entered and for shifting to a diving mode described later, and does not detect that one tie is 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 information processing apparatus 1 for divers of the present embodiment, the water depth (water pressure) is not less than a certain value by the pressure sensor (not shown) built in the apparatus body 2, for example, in the present embodiment, the water depth is 1.
It is considered that the dive started when it became deeper than 5 m, and it was considered that the dive ended when it became shallower than this water depth value.

As shown in FIG. 2, the diver's information processing apparatus 1 of this 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 liquid crystal display panel 11. A display unit 10 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 are configured. The outputs from the switches A and B and the water entry monitoring switch 30 are input to the control unit 50.

In the information processing apparatus 1 for divers, 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 device 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. The water depth measuring means 61 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 uses a CPU 51 that controls the entire apparatus and a control circuit 52 that controls the liquid crystal driver 12 and the time counter 33 under the control of the CPU 51, and stores it in the ROM 53. Each mode described below 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.

(Structure for Ascent Rate Monitoring) The diver's information processing device 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 at the time of 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, the floating speed violation determining means 77 is realized by the arithmetic function of the RAM 54, and 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 and the liquid crystal display panel 11 are used.

(Explanation of Display Section) 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. is there. First, the first display area 111, which is located on the 12 o'clock side of the wristwatch, is the largest of the respective display areas, and includes a diving mode, a surface mode (time mode), a planning mode, a log, which will be described later. In the mode, the current water depth, current date, water depth rank, and dive date (log number) are displayed. The second located on the 3 o'clock side of the first display area 111
In the display area 112, the dive time, the current time, the no-decompression dive time, and the dive start time (diving 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, which is located at the 6 o'clock side of the display area 111, displays the maximum water depth, the nitrogen discharge time in the body, and the safety level in the diving mode, the surface mode (time mode), the planning mode, and the log mode, respectively. , Maximum water depth (average water depth) is displayed. The fourth display area 1 located on the 3 o'clock side of the third display area 113
At 14, the diving mode, the surface mode ((time mode), the planning mode, the log mode, the non-decompressible dive time, the water rest time, the temperature, and the dive end time (maximum water temperature) are displayed. Further, in the fifth display area 115 located at the 6 o'clock side of the third display area 113, the power capacity exhaustion warning 104 and the high 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. Here, the amount of nitrogen in the body is displayed in 10 ranks, including when all 9 marks are turned off.

Further, in the seventh display area 117, which is located at the 3 o'clock side of the sixth display area 116, there is a tendency for nitrogen to be absorbed when the decompression dive state is set in the diving mode, or there is a tendency for discharge. Shows an area that shows whether there is one, an area that displays "SLOW" as one of the ascent rates violation warnings that the ascent rate is too high, and a "DECO" that warns that you have reached a decompression dive during the dive. The area is configured. As described above, on the display surface of the liquid crystal display panel 11, the area (first area) for displaying the current water depth in the diving mode is displayed.
Display area 111) is secured the largest,
Divers can easily see the current depth display, which is important data. 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.

Further, in the present embodiment, the third display area 11
An eighth display area 118 and a ninth display area 119 are formed in areas adjacent to the third and fourth display areas 114 at the 6 o'clock side, and in these display areas, as will be described later, In addition to the above information, additional information is also displayed during the dive.

(Structure of Safety Information Derivation Means) FIG. 4 shows the calculation of the amount of nitrogen in the body (the amount of inert gas in the body) in the information processing apparatus 1 for divers of the present embodiment, and based on the result, the time for discharging nitrogen in the body and It is a functional block diagram for deriving safety information, such as decompression diving possible 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 ((body nitrogen content Nitrogen amount deriving means 6 for calculating pressure)
0 (internal inert gas amount deriving means) 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 amount deriving means 60, first, in order to calculate the body nitrogen amount 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, CPU 51, R shown in FIG.
Respiratory gas nitrogen partial pressure calculating means 62 realized as a function of the OM 53 and the RAM 54, a respiratory gas nitrogen partial pressure storing means 63 using the RAM 54 shown in FIG. 2, and the CPU 5 shown in FIG.
1. Internal nitrogen partial pressure calculation means 64 realized as the functions of ROM 53 and RAM 54, internal nitrogen partial pressure storage means 65 using the RAM 54 shown in FIG. 2, and clocking means using the time counter 33 shown in FIG. 68, C shown in FIG.
A comparison unit 6 which is realized as a function of the PU 51, the ROM 53, and the RAM 54, and which compares the data stored in the respiratory air nitrogen partial pressure storage unit 63 and the internal nitrogen partial pressure storage unit 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 depth 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 depth 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 depth 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 internal nitrogen partial pressure calculating means 64 calculates the internal nitrogen partial pressure PGT for each tissue having different absorption / exhaust rates of nitrogen.
Calculate (t). Taking one tissue as an example, the nitrogen partial pressure P in the body is absorbed / extracted from the dive time t = t ₀ to t _E.
GT (t _E) is, t ₀ o'clock tissue nitrogen partial pressure PGT (t ₀₎
And 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 the internal nitrogen partial pressure PGT (t _E ) at t _{0 is} the internal nitrogen partial pressure PGT (t ₀ ) at this water depth. 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.

[0049]

[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 gas 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 ).

Then, 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.

[0054]

[Equation 3]

[0055]

[Equation 4]

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

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 internal nitrogen partial pressure, the time until the internal nitrogen partial pressure reaches this allowable value when the diver stays at a certain water depth ((water pressure)) , And the time until the nitrogen partial pressure in the body falls to the equilibrium value on the water surface (nitrogen excretion time in the body / safety information) can be accurately obtained. Is a diving possible time deriving means 92 and a body nitrogen discharging time deriving means 91 for deriving the non-decompressible dive time and the body nitrogen discharge time as diver safety information.
Is configured. In addition, means 9 for deriving the internal nitrogen discharge time
1 is not only the time until the nitrogen partial pressure in the body falls to the equilibrium value on the surface of the water, but also when the diver continues to stop at the predetermined depth position until the body nitrogen amount decreases by the predetermined amount. The time and the time until the amount of nitrogen in the body is reduced to a predetermined amount can also be derived.

(Explanation of each mode) The information processing apparatus 1 for divers configured in this way 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. Since the characteristic operation and display in the diving mode ST5 in this embodiment will be described later for each embodiment, the basic operation and display will be described here. Therefore, the liquid crystal display panel 1 is shown in FIG.
Of the first display area, the eighth display area 118 and the ninth display area 119 are omitted.

(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. 6, it is displayed that it is now 10:06 on December 5th.

Further, since the atmospheric pressure changes when the user goes up and down at a high altitude and a low altitude, the dissolution of nitrogen into the body and the discharge of nitrogen occur regardless of the presence or absence of past diving. 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 body nitrogen reaches an equilibrium state, and the amount of nitrogen discharged or dissolved in the body from the present to the equilibrium state are displayed.

In the time mode ST1, when the switch A is pressed, the mode directly shifts to the planning mode ST3, and when the switch B is pressed, the mode directly shifts to the 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 after the end of the dive and when the water entrance monitoring switch 30 which has been in conduction is in an insulated state. 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. The nitrogen elimination time 201 in the body is 0.
When the time reaches 00 minutes, the body nitrogen amount deriving means 60
Assuming that the measured amount of non-nitrogen in the body has reached the equilibrium value on land, the fact that the display of the nitrogen discharge time 201 in the body blinks, the alarm sound from the sounding device 37, and the vibration generator 38 indicate.
The diver is informed by the vibration from. Therefore, the diver can know that he has taken sufficient rest.

The elapsed time after diving is the surface dwell time 2
02 is displayed, and the water surface down time 202 is timed starting with the time when the water depth becomes shallower than 1.5 m in the diving mode ST5 as the end of the diving,
After measuring up to 48 hours, no display is shown. Therefore, in the information processing device 1 for divers,
The surface mode ST2 is set on land until 48 hours have elapsed, and the time mode ST1 is set thereafter. In addition, in the state shown in FIG.
It is 1:58, and it is displayed 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 diving performed so far corresponds to four nitrogen in the body nitrogen graph 203, and 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 10 hours 55 minutes, for example.

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 water has entered through the water entering monitor switch 30, a function check is automatically performed, and if it is confirmed that the sensor is normal, the diving 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, when it is detected that water has entered through the water entering monitoring 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 a guide for 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 kept 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 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. 6, 12 minutes have passed since the dive was started, the water depth is 16.8 m, and the fourth display of 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 depth.
Further, it is displayed that the maximum water depth to date is 20.0 m, and further, the liquid crystal display panel 11 shown in FIG.
In the sixth display area 116 of No. 3, it is displayed that the current amount of nitrogen in the body is at a level where four marks in the body nitrogen graph 203 are lit.

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. , The display of “SLOW” and the current water depth are displayed at 1 Hz in the seventh display area 117 of the liquid crystal display panel 11 shown in FIG.
Flashes alternately every cycle to warn the ascending speed. 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. 6, it is displayed that the time is now 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. During this period, the diving result (various data such as diving date, dive time, and maximum water depth) during this period is defined as one dive operation from when the water depth becomes deeper than 1.5 m to when it becomes shallower than 1.5 m. It is stored and held in the RAM 54. At the same time, during the diving this time, the above-mentioned ascending speed violation warning continued for 2 times.
If there are more than one, record that fact 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. 6, 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 while the decompression is being performed, the downward arrow 509 indicates that the amount of nitrogen in the body tends to 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 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 this 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. 6, 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 26.0 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 into 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.

In the log mode ST6, when the speed violation warning is issued twice or more during the diving currently displayed, the fact is notified, for example, 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.

Further, during the log mode ST6, 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 sensor and the like are normal, the diving mode is automatically switched 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.

[Embodiment 1] In the information processing apparatus 1 for divers configured as described above, in the present embodiment, not only in the surface mode ST2 described above but also in the diving mode ST5 (diving), as shown in FIG. In the eighth display area 118 of the liquid crystal display panel, the nitrogen discharge time 901 derived by the internal nitrogen discharge time deriving means 91 described with reference to FIG. 4 is displayed. However, the body nitrogen discharge time 901 displayed here is the surface mode ST.
When the diver continues to stop at the current water depth position during diving, instead of the body nitrogen discharge time 201 (see Fig. 6) in the state where the diving is stopped on the water surface as in 2, the body nitrogen is removed from the body. This is the time required for the discharged nitrogen amount in the body to reach an equilibrium value (target nitrogen amount in target / inert gas amount in target) at this depth position. That is, in FIG. 4, the in-vivo nitrogen discharge time deriving means 91 derives the in-vivo nitrogen discharge time 201 to be displayed in the surface mode ST2 based on the in-vivo nitrogen balance value standard 914 and the water depth 0 m standard 911, and the diving mode ST5 (diving mode). The body nitrogen discharge time 901 which should be displayed in (middle) is the water depth measuring means 61.
Current water depth standard 912 based on the current water depth measurement results at
And the equilibrium value standard 914 of body nitrogen.

According to this structure, when the current depth position of the diver is too deep, nitrogen is absorbed in the body and the partial pressure of nitrogen in the body tends to rise.
01 is not derived. Therefore, the body nitrogen discharging time 901 is not displayed at such a depth position.

On the other hand, when the current water depth of the diver is relatively shallow, nitrogen is discharged from the body and the partial pressure of nitrogen in the body tends to decrease, so that the body nitrogen discharge time 901 can be derived. Therefore, in the present embodiment, the time until the amount of nitrogen in the body reaches the equilibrium value at this current water depth position is displayed. For example, in the state shown in FIG. 7, the water depth has risen to 6.0 m when 18 minutes have passed since the start of diving, and if it continues to stop at this position, the body nitrogen amount 902 will be reached after 15 minutes. Indicates that the predetermined equilibrium value corresponds to a water depth of 6.0 m.

Therefore, the diver can judge whether the nitrogen is in the absorbed state or the discharged state in the direction of the arrow of the seventh display area 117 when the safety stop is performed during the diving, and If the nitrogen discharge time 901 is displayed, it is possible to objectively judge that the stop at the water depth position is appropriate as a safe stop because nitrogen is in the discharge state. Further, the diver displays the internal nitrogen discharge time 901 at the current water depth position, and if the time is too long, the diver determines that a safe stop should be made at a slightly shallower position. Therefore, even if the diver does not go up to the ground, he / she will float to the proper water depth position and start the safety stop, and then the body nitrogen discharge time 901
Can be objectively and surely confirmed by observing the countdown with the passage of time and safely stopping the body nitrogen completely or to a certain extent for a certain time.

In the diving mode ST5,
When the internal nitrogen discharge time 901 displayed in the eighth display area 118 of the internal liquid crystal display panel reaches 0 hour 00 minutes while the diver continues to stop at the current depth position, the internal nitrogen amount derivation means 60 is set. Assuming that the measured amount of non-nitrogen in the body has dropped to the equilibrium value (target amount of nitrogen in the body) corresponding to the current water depth value, the fact that the nitrogen discharge time 901 in the body blinks, an alarm sound from the sounding device 37, and The diver is notified of the vibration from the vibration generator 38. Therefore, the diver can know that he has made a sufficient safety stop at the current depth position.

Further, in the present embodiment, during the diving mode,
In view of the current amount of nitrogen in the body, the permissible water depth value 902 capable of descending while maintaining the no-decompression diving state is displayed in the ninth display area 119 of the liquid crystal display panel 11. That is, as shown in FIG. 4, the diver's information device 1 of the present embodiment has an allowable water depth value 902 capable of descending while maintaining a no-decompression diving state based on the current body nitrogen amount (body nitrogen partial pressure). The allowable water depth value deriving means 93 for deriving is configured. The permissible water depth deriving means 93 is realized as a function of the CPU 51, the ROM 53, and the RAM 54 shown in FIG. 2, and derives the permissible water depth value 903 corresponding to the current amount of nitrogen in the body from a look-up table configured in the ROM 53, for example. To do. The allowable water depth value 903 is also displayed in the ninth display area 119 of the liquid crystal display panel 11 on the display unit 10 in the diving mode ST5.
For example, in the state shown in FIG.
It is displayed that even if you dive to the depth of m, you can still dive without decompression. Therefore, the diver can reliably prevent decompression diving by diving while checking the water depth allowable value 902 displayed during diving.

In the diving mode ST5, the time until the permissible value of the nitrogen partial pressure in the body is reached (no decompression dive time 302) is the fourth display area 114 of the liquid crystal display panel.
Is displayed as described above with reference to FIG. Further, in the diving mode ST5, the amount of in-vivo nitrogen is displayed in the sixth display area 116 as the in-vivo nitrogen graph 203 in rank, as described with reference to FIG.

[Embodiment 2] Also in this embodiment, not only the surface mode ST2 described above but also the diving mode ST
Even in 5 (diving), as shown in FIG. 8, in the eighth display area 118 of the liquid crystal display panel 11, the internal nitrogen discharge time derived by the internal nitrogen discharge time deriving means 91 described with reference to FIG. 904 is displayed. However, the body nitrogen discharge time 904 displayed here is displayed.
Is the nitrogen discharge time 201 in the body in the state where the diving is stopped on the water surface as in the surface mode ST2 (see FIG. 6).
reference. ) Instead of a preset water depth setting value, for example, when the diver continues to stop at a water depth of 5 m, the body nitrogen amount becomes the equilibrium value (target body nitrogen amount) at the water depth value corresponding to this water depth setting value. This water depth setting value 905 is also displayed as 5 m in the eighth display area 118 of the liquid crystal display panel 11. Therefore, the body nitrogen excretion time deriving means 91 shown in FIG.
The body nitrogen excretion time 201 to be displayed at T2 is derived based on the body nitrogen equilibrium value reference 914 and the water depth 0 m reference 911, and the body nitrogen excretion time 901 to be displayed in the diving mode ST5 (diving) is the body nitrogen equilibrium value. Criterion 9
14 and the water depth set value reference 913. Therefore, the body nitrogen discharge time 904 displayed here is not directly related to the current depth position of the diver. In addition, in the state shown in FIG. 8, when 18 minutes have passed since the dive was started, the water surface has risen to a depth of 6.0 m, and the nitrogen discharge time in the body is 90 minutes.
Since 4 is 15 minutes, it is displayed that if a safe stop is performed at a water depth of 5 m, the amount of nitrogen in the body will reach an equilibrium value due to the safe stop for 15 minutes.

In the information processing apparatus 1 for divers configured as described above, the body nitrogen discharge time at the set water depth value 905 is 9
Because 04 is displayed, after seeing how the nitrogen discharge time 904 in the body counts down with the passage of time after ascending to a depth of 5 m and starting a safe stop even if you do not go up to the land, you can see that the nitrogen in your body is completely removed. In addition, it is possible to objectively and surely confirm that the safety stop has been performed for a sufficient amount of time to discharge it to some extent.

In the diving mode ST5,
While the diver continues to stop at the water depth position corresponding to the set water depth value 905, when the body nitrogen discharge time 904 displayed in the eighth display area 118 of the body liquid crystal display panel becomes 0 hour 00 minutes, Assuming that the amount of non-nitrogen in the body measured by the nitrogen amount deriving means 60 has dropped to the equilibrium value (target amount of nitrogen in the body) corresponding to the set water depth value 905, that effect blinks the display of the body nitrogen discharge time 904, and a sounding device. 37
The diver is informed by the alarm sound from the and the vibration from the vibration generator 38. Therefore, the diver can know that he has made a sufficient safety stop at the current depth position.

When the diver tries to stop safely during diving, there is a risk that the lungs will be heavily burdened even if he does not suffer from decompression sickness at an excessively shallow place. Therefore, in the present embodiment, even when the diver has floated to a position shallower than the water depth setting value 905 of 5 m, the water depth setting displayed in the eighth display area 118 of the liquid crystal display panel 11 is set. The display of the value 905 is blinked to notify the diver. At the same time, the diver causes the water depth set value of 9 to be exceeded by the alarm sound or vibration emitted from the alarm device 37 and the vibration generator 38 shown in FIG.
Notify the diver that he has ascended to a position shallower than 05.

The other structure is the same as that of the first embodiment described with reference to FIG. 7, and the description thereof will be omitted.

In this embodiment, the water depth setting value 90
Although the case where 5 is set to 5 m has been described as an example, this value may be set to an arbitrary value from the outside. Such setting may be performed in the setting mode ST4 described with reference to FIG. That is, even when the water depth set value 905 is initially set to 5 m, if it is desired to set the position of the water depth of 6 m as the safe stop position in consideration of safety, the setting item is set to the water depth set value 905 in the setting mode ST4, All you have to do is press switch B and change the value. As a result, instead of the water depth setting value 905 that was initially set to 5 m in R0M53, a new RAM 54
Based on the water depth setting value 905 written as 5 m, the body nitrogen discharge time 904 in the diving mode ST5 is derived. In this way, the water depth set value input means for changing the water depth set value 905 can be realized.

[Third Embodiment] Further, the first and second embodiments.
In any of the above, the time until the amount of nitrogen in the body reaches an equilibrium value was used as the body nitrogen discharge time displayed during the dive, as in the surface mode ST2. Since it is a guideline for confirming the suitability of stopping, the time until the nitrogen content in the body reaches the equilibrium value may be too long.

Therefore, in this embodiment, as shown in FIG. 9, a structure based on the one referred to in the second embodiment is
Nitrogen excretion time 9 displayed in diving mode ST5
Regarding 06, it is derived as a time until the amount of nitrogen in the body is reduced to a preset nitrogen amount set value (target amount of nitrogen in the body at the time of a safe stop performed in the diving mode), and this is displayed. Therefore, the body nitrogen excretion time deriving means 91 shown in FIG. 4 is replaced with the body nitrogen equilibrium value reference 914.
The body nitrogen excretion time 906 is derived based on the nitrogen amount setting value reference 915, and the body nitrogen excretion time 906 is displayed in the eighth display area 118 of the liquid crystal display panel 11 and the ninth display area as shown in FIG. At 119, the above-mentioned nitrogen amount set value 907, for example, 5 bar is displayed.

Here, regarding the nitrogen amount set value 907 used as the nitrogen amount set value reference 915, the sixth display area 1
It is preferable to interlock with the in-vivo nitrogen graph 203 displayed in 16. For example, since the in-vivo nitrogen graph 203 is composed of nine marks, it can be displayed in 10 ranks including all lights off. So, the internal nitrogen graph 2
03 is switched from three lightings to two lightings, that is, in the body nitrogen graph 203, an amount corresponding to the third rank (5b in the present embodiment) counted from complete extinction.
ar / target nitrogen content in the body) is constructed so as to derive the time required to decrease to (ar). With such a configuration, the diver can manage the time by the internal nitrogen discharge time 906 and can check the internal nitrogen amount from the internal nitrogen graph 203 when the vehicle is safely stopped during diving.

In this embodiment, the nitrogen amount set value reference 91
The nitrogen amount setting value 907 used as 5 has been described as an example in which it is set to 5 bar, but this value may be arbitrarily set from the outside. Such a setting also applies to the setting mode ST described with reference to FIG.
You can go in step 4. That is, the nitrogen amount setting value 907 is 5b.
Even if the initial setting is ar, if you want to change the nitrogen amount setting value 907 to 4 bar in consideration of safety,
In the setting mode ST4, the setting item is the nitrogen amount setting value 90.
When it becomes 7, all you have to do is press switch B and change the value. As a result, in place of the nitrogen amount setting value 907 which was initially set to 5 bar in R0M53, a new RAM is newly added.
Based on the nitrogen amount setting value 907 written as 4 bar in 54, the body nitrogen discharging time 906 in the diving mode ST5 is derived. In this way, the nitrogen amount setting value 9
A nitrogen amount set value input means for changing 07 can be realized.

The in-vivo nitrogen discharging time 906 displayed in the diving mode ST5 may be derived and displayed as the time until the current in-vivo nitrogen amount decreases by a predetermined amount (judgment value). The determination value in this case is also preferably linked with the in-vivo nitrogen graph 203 (see FIG. 1A) displayed in the sixth display area 116. For example, since the in-vivo nitrogen graph 203 has nine marks, the target in-vivo nitrogen amount is the amount of in-vivo nitrogen reduced by an amount corresponding to one of the marks that are currently lit. The time required for the body nitrogen amount to reach the target body nitrogen amount is derived as the body nitrogen discharge time 906 and displayed. Even in such a configuration, the diver can check the amount of nitrogen in the body by managing the time of discharging nitrogen in the body 906 during diving and by reducing the lighting of one in the body nitrogen graph 203. In addition to the notification by such a display, an alarm sound from the sounding device 37 and a vibration generating device indicating that the amount of in-vivo nitrogen has reached the target in-vivo nitrogen amount when the lighting of the in-vivo nitrogen graph 203 decreases by one. 38
The diver may be notified by the vibration from.

[Other Embodiments] In each of the above embodiments, the configuration in which nitrogen is monitored as the inert gas has been described. However, a gas containing a rare gas such as helium gas, or a rare gas such as helium gas and nitrogen. When a gas containing a mixed gas of is used as the intake air, the amount of accumulated rare gas or the amount of rare gas and nitrogen in the body and the discharge time thereof may be monitored. Further, it is needless to say that the respective configurations described in the respective modes may be variously combined without being limited to the above respective modes.

[0106]

As described above, in the information processing apparatus for divers according to the present invention, the inert gas discharge time when the diver continues to stop at a certain water depth is derived, and
This inert gas discharge time is characterized in that it is displayed even during diving. Therefore, even if the diver does not go ashore, objectively, without relying on experience or memory, how long and at what time to stop safely at a relatively shallow water depth,
And you can make a reliable decision.

[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 an in-vivo nitrogen amount deriving unit and the like which are included in the information processing apparatus for divers to which the present invention is applied.

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

FIG. 6 is a flowchart showing each function of the information processing apparatus for divers to which the present invention is applied.

FIG. 7 is an explanatory diagram showing display contents performed in a dive mode of the information processing apparatus for divers according to the first embodiment of the present invention.

FIG. 8 is an explanatory diagram showing display contents performed in a diving mode of the information processing apparatus for divers according to the second embodiment of the present invention.

FIG. 9 is an explanatory diagram showing display contents performed in a dive mode of the information processing apparatus for divers according to the third embodiment of the present invention.

[Explanation of symbols]

1 ・ ・ ・ Information processing device for divers 5 ... Operation part 10 ... Display unit (display means) 11 ... Liquid crystal display panel 30 ... Water monitoring switch 34 ... Pressure sensor 37: Sounding device 38 ... Vibration generator 50 ... Control unit 51 ... CPU 53 ... ROM 54 ... RAM 60 ... Measures for deriving the amount of nitrogen in the body 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 ... Timekeeping means 75 ... Ascent rate measuring means 76 ... Allowable ascent speed 77 ... Ascending speed violation judging means 91 ... Means for deriving nitrogen discharge time from the body 92 ... Means for deriving available diving time 93 ... Allowable water depth deriving means A, B ... switch ST1 ・ ・ ・ Time mode ST2 ・ ・ ・ Surface mode ST3 ... Planning mode ST4: Setting mode ST5: Diving mode ST6 ... Log mode

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomoaki Hirakawa 3-3-5 Yamato, Suwa City, Nagano Seiko Epson Corporation (72) Inventor Toshiko Koyama 3-35 Yamato, Suwa City, Nagano Prefecture Seiko Epson Corporation (56) Reference JP-A-7-311039 (JP, A) JP-A-4-15191 (JP, A) JP-A-5-280981 (JP, A) JP-A-2-179594 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G04G 1/00 B63C 11/02

Claims (15)

(57) [Claims] 1. A water depth measuring means for measuring the water depth, timing means for measuring time elapsed, the clock means of the measurement result and the depth measuring unit of the measuring result is accumulated in the body during diving based on inert and inert gas amount deriving means to continue to derive the amount of gas, the diver stops at a depth position corresponding to said current depth value based on the inert gas amount deriving means vivo inert gas amount derived is and the current water depth a body inert gas discharge time derivation means inert gas is derived as the inert gas discharge time time to reach the target body inert gas amount is discharged from the body when continued, the internal inert gas And a display means capable of displaying the inert gas discharge time derived by the discharge time deriving means in the dive, wherein the inert gas discharge time is set by the diver at the water depth position.
A certain amount of inert gas in the body when stopped
The amount of gas emitted from the target inert gas
As the amount, the amount of inert gas in the body
An information processing device for divers, characterized in that it takes time to reach it . 2. A water depth measuring means for measuring the water depth, timing means for measuring time elapsed, the clock means of the measurement result and the depth measuring unit of the measuring result is accumulated in the body during diving based on inert and inert gas amount deriving means to continue to derive the amount of gas, wherein the water <br/> depth set based on the depth settings inert gas amount deriving means is set in-vivo inert gas amount and derived in advance Inert gas discharge, which is the time taken for the inert gas to be discharged from the body to reach the target amount of inert gas when the diver continues to stop at the water depth position corresponding to the value, as the inert gas discharge time and time derivation means, wherein a display unit capable of displaying an inert gas discharge time within the inert gas discharge time deriving unit derived during diving, the inert gas discharge time is diver by the water depth position
A certain amount of inert gas in the body when stopped
The amount of gas emitted from the target inert gas
As the amount, the amount of inert gas in the body
An information processing device for divers, characterized in that it takes time to reach it . 3. The information processing apparatus for divers according to claim 2, further comprising water depth setting means for externally setting the water depth setting value to an arbitrary value. 4. The informing device according to claim 2, further comprising an informing device for informing the diver of the current water depth when the current water depth becomes shallower than the water depth set value based on the measurement result of the water depth measuring device. Information processing device for divers. 5. The method according to any one of claims 1 to 3,
Information for divers, characterized in that it has a notifying means for notifying the diver when the amount of inert gas in the body reaches the target amount of inert gas in the body based on the measurement result of the amount of inert gas deriving means. Processing equipment. 6. The information processing apparatus for divers according to claim 4, wherein the display means is configured to function also as the notification means. 7. The method according to any one of claims 1 to 3,
The inert gas discharge time is the time until the body inert gas amount reaches the equilibrium value at the water depth position as the target body inert gas amount when the diver continues to stop at the water depth position. An information processing device for divers. 8. The method according to any one of claims 1 to 3,
The inert gas discharge time, the amount of inactive gas in the body when the diver continues to stop at the water depth position, until the amount of inactive gas preset value as the target inactive gas amount reaches the set value An information processing device for divers, characterized by being time. 9. The information processing apparatus for divers according to claim 8, further comprising an inert gas amount setting means for externally setting the inert gas amount set value. 10. The information processing apparatus for divers according to claim 1, wherein the display means is configured to display a countdown of the in-body inert gas discharge time. 11. A water depth measuring means for measuring water depth, a time measuring means for measuring elapsed time, a measurement result of the time measuring means and a measurement of the water depth measuring means.
Amount of inert gas accumulated in the body during diving based on the results
And the amount of inert gas in the body derived by the inert gas amount deriving means.
And corresponding to the current water depth value based on the current water depth value.
When the diver continues to stop at the depth,
Until the target amount of inert gas in the body is exhausted from the body
Inactivity in the body that derives the time at
Gas discharge time deriving means and the inert gas discharged by the inert gas discharge time deriving means in the body
And a display means capable of displaying the gas discharge time in the dive, the display means displaying the present amount of inert gas in the body in a graph.
If you display which of multiple ranks it corresponds to
In both cases, the inert gas discharge time deriving means is
Inactive in the body corresponding to the predetermined rank position on the display
The amount of gas is the amount of inert gas in the target body,
The time it takes for the inert gas in the body to reach the amount of inert gas
Configured to derive as the inert gas discharge time
And diver's information processing device, characterized in that are. 12. A water depth measuring means for measuring water depth, a time measuring means for measuring elapsed time, a measurement result of the time measuring means and a measurement of the water depth measuring means.
Amount of inert gas accumulated in the body during diving based on the results
And the amount of inert gas in the body derived by the inert gas amount deriving means.
And corresponding to the current water depth value based on the current water depth value.
When the diver continues to stop at the depth,
Until the target amount of inert gas in the body is exhausted from the body
Inactivity in the body that derives the time at
Gas discharge time deriving means and the inert gas discharged by the inert gas discharge time deriving means in the body
And a display means capable of displaying the gas discharge time in the dive, the display means displaying the present amount of inert gas in the body in a graph.
If you display which of multiple ranks it corresponds to
In both cases, the means for deriving the inert gas discharge time is
Gas is equivalent to the number of ranks in the graph display
The amount of gas when exhausted by the amount
The amount of inert gas is the amount of inert gas in the body
The time until the gas arrives is the inert gas discharge time
An information processing device for divers, characterized in that it is configured to be derived . 13. The method according to any one of claims 1 to 3, further comprising: deriving a time period during which no decompression diving can be continued at the current water depth position based on the amount of the inert gas in the body derived by the inert gas amount deriving means. Divers information, characterized in that it has a diving possible time deriving means, the display means is configured to also display the no-decompression diving possible time derived by the diving possible time deriving means in the dive Processing equipment. 14. The allowable water depth value according to claim 1, further capable of descending while maintaining a no-decompression diving state based on the amount of the inert gas in the body derived by the inert gas amount deriving means. For divers, characterized in that it has an allowable water depth value deriving means for deriving, and the display means is also configured to display the allowable water depth value derived by the allowable water depth value deriving means during diving. Information processing equipment. 15. The inert gas according to claim 1, wherein the inert gas is a noble gas such as nitrogen or helium,
An information processing device for divers, which is a mixed gas of nitrogen and a rare gas such as helium.