JP2001278191A - Information processor for diver and method for controlling information processor for diver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To positively ensure a diver's safety by grasping an accurate gas mixing ratio. SOLUTION: The mixing ratio of mixed gas can be automatically set, and diving control information of a water depth value (an allowable water depth value) allowed to dive in the respiration air of the set mixing ratio is generated or displayed. The diver is therefore prevented positively from having decompression sickness or oxygen sickness to ensure the driver's safety.

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 and a control method thereof, and more particularly to a diving management technique based on an oxygen concentration in a mixed gas diving in which diving is performed using a mixed gas.

[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 the conventional divers information processing apparatus, the amount of inert gas in the body is grasped from the above theory, and after the dive is completed, when the body reaches the land, the amount of the inert gas in the body returns to the equilibrium value on land. Is displayed (inert gas discharge time in the body). Therefore, divers who saw this display should take a rest on land only for an appropriate amount of time before resuming diving, so they should dive multiple times a day without suffering from decompression sickness. Can be. As described above, in the conventional diver's information processing device, the amount of inert gas in the body is monitored from the viewpoint of protecting the diver from decompression sickness, but the poor health caused to the diver due to respiratory breath is not limited to decompression sickness. . That is, when the respiratory oxygen partial pressure in the respiratory gas is too high, the diver suffers from so-called oxygen sickness. In particular, when a respiratory gas having a mixture ratio of oxygen larger than that of air is used for diving for a long period of time, oxygen sickness tends to occur more easily than decompression sickness.

[0004] In recent years, diving using a mixed gas having a different oxygen mixing ratio as a respiratory gas (hereinafter referred to as nitrox diving) called nitrox has been performed.
For the theoretical literature on nitrox diving, see Dick Rutkowski's Nitrox
MANUAL ”, which describes the effects of oxygen on the human body, oxygen sickness, etc.,
The allowable dive time for the oxygen partial pressure of the respiratory gas is also specified. In this nitrox diving, in order to ensure the safety of the diver as described above, it is not enough to manage the residual pressure in the air tank, but it is necessary to manage the oxygen concentration. Oxygen concentration information is needed for management.

[0005] When diving with a mixed gas in which the mixing ratio of oxygen and nitrogen is changed, such as nitrox, the mixing ratio of the gas notified by the facility that mixed the gas is set in the diver's information processing apparatus. Later you need to dive. For this reason, the gas mixture ratio is to be notified to the diver. As a method for the facility that has mixed the gas to notify the diver of the mixing ratio of the gas to the diver, it is conceivable that the facility mixes orally, handing out a notification document, or attaching a seal to an air tank.

[0006]

However, if the notified gas mixture ratio is different from the actual gas mixture ratio, there is a risk of causing decompression sickness or oxygen poisoning. In order to avoid this, it is conceivable that measurement is performed by a mixing ratio measuring device before using the mixed gas, but it is necessary to set the mixing ratio of the gas in the information processing device for divers after the measurement, which takes time and effort. However, there is a problem that an incorrect calculation is performed if the user forgets to set.

Further, a new scuba called a closed type, which reuses gas discharged by a diver, is used. In this system, the oxygen concentration of the respirator changes during the dive, and the diver's value is set at a value set at the start of the dive. An error occurs in the calculation in the information processing apparatus for use.
Therefore, an object of the present invention is to use a mixed gas such as nitrox gas, or even to use a closed scuba, to grasp an accurate gas mixture ratio and to ensure the safety of a diver. It is an object of the present invention to provide a diver's information processing apparatus and a control method capable of performing the divers.

[0008]

According to a first aspect of the present invention, there is provided a mixture ratio information for detecting mixture ratio information on a mixture ratio of oxygen and an inert gas in a mixed gas used for diving a mixed gas. Detecting means and diving management means for automatically capturing the mixing ratio information and generating diving management information for managing the diver's diving state based on the captured mixing ratio information, I have.

According to a second aspect of the present invention, in the information processing apparatus for divers according to the first aspect, a mixture ratio information transmitting unit for transmitting the detected mixture ratio information, and a mixture ratio information receiving unit for receiving the mixture ratio information. Means.

According to a third aspect of the present invention, in the information processing apparatus for divers according to the second aspect, the mixing ratio information transmitting means and the mixing ratio information receiving means perform communication using ultrasonic waves. I have.

According to a fourth aspect of the present invention, in the information processing apparatus for divers according to the first aspect, the mixture ratio information is:
It is characterized by including oxygen concentration information.

According to a fifth aspect of the invention, in the information processing apparatus for divers according to the first aspect, the mixture ratio information detecting means is attached to a valve portion of an air tank containing the mixed gas. I have.

According to a sixth aspect of the present invention, in the information processing apparatus for divers according to the first aspect, there is provided a gas deriving means attached to a valve portion of an air tank containing the mixed gas and guiding the mixed gas. The mixing ratio information detecting means is attached to the gas deriving means.

According to a seventh aspect of the present invention, in the information processing apparatus for divers according to the first aspect of the present invention, the automatic diving control means for prohibiting the diving management means from automatically inputting the mixing ratio information, and the mixing ratio information. And a mixture ratio information setting means for setting by the user.

According to a eighth aspect of the present invention, in the information processing apparatus for divers according to the first aspect of the present invention, there is provided a divers information processing apparatus, further comprising a fetch timing setting means for setting a fetch timing of the mixture ratio information in the diving management means. I have.

According to a ninth aspect of the present invention, in the information processing apparatus for divers according to the eighth aspect, the capture timing setting means sets the capture timing at the start of diving.

According to a tenth aspect of the present invention, in the divers information processing apparatus according to the eighth aspect, the fetch timing setting means sets the fetch timing every predetermined time.

According to an eleventh aspect of the present invention, in the information processing apparatus for divers according to the first aspect, the mixing ratio information detecting means includes a pressure detecting means for detecting a pressure of the mixed gas. .

According to a twelfth aspect of the present invention, in the diving information processing apparatus according to the first aspect, when the mixing ratio is not taken in at a predetermined timing, the diving information means is provided. An information processing apparatus for diving, characterized in that:

A diving information processing apparatus according to a thirteenth aspect of the present invention is the diving information processing apparatus according to the twelfth aspect, wherein the predetermined timing is a point in time when the start of diving is detected.

[0021] According to a fourteenth aspect of the present invention, there is provided a mixing ratio information detecting step for detecting mixing ratio information on a mixing ratio of oxygen and an inert gas in a mixed gas used for diving a mixed gas,
A dive management information generating step of automatically taking in the mixture ratio information and generating dive management information for managing a diving state of the diver based on the taken in mixture ratio information.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described with reference to the drawings. [1] Overall Configuration FIG. 1 is a plan view showing a device main body and a part of an arm band of a diver's information processing apparatus according to the present embodiment. FIG. 2 is a schematic block diagram of a divers information processing apparatus. In FIG. 1, the diver's information processing apparatus 1 of the present embodiment is also called a dive computer, and measures the amount of nitrogen (internal nitrogen partial pressure) accumulated in the body during diving. It displays the rest time to be taken on land after diving. In the information processing apparatus 1 for divers, wrist bands 3 and 4 are respectively connected to a disk-shaped apparatus main body 2 in the vertical direction in the drawing, and the wrist bands 3 and 4 are attached to a user's arm similarly to a wristwatch. Is used. The apparatus main body 2 has an upper case and a lower case fixed in a completely watertight state by means of screws or the like, and incorporates various electronic components (not shown).

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 side of the wristwatch at 6 o'clock. I have. 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 information processing apparatus 1 for divers, and to set various conditions. On the left side of the apparatus main body 2 in the drawing, 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 apparatus main body 2, and these electrodes 31 and 32 conduct with seawater or the like, and the resistance between the electrodes 31 and 32 decreases. It is determined that water has entered when the water has entered.
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 diver's information processing apparatus 1 of the present embodiment, the water depth (water pressure) is equal to or more than a predetermined value by a pressure sensor (not shown) built in the apparatus main body 2.
For example, in the present embodiment, it is considered that the diving has started when the water depth has become deeper than 1.5 m, and that the diving has ended when the water depth has become shallower than this water depth value.

As shown in FIG. 2, the information processing apparatus 1 for divers of the present embodiment has a liquid crystal display panel 11 and a liquid crystal display panel 1 for displaying various kinds of information to notify the user.
Unit 10 having a liquid crystal driver 12 for driving the display unit 1
And a control unit 50 that performs processing in each operation mode and causes the liquid crystal display panel 11 to perform display according to each operation mode. Outputs from the switches A and B and the water input monitoring switch 30 are input to the control unit 50. Since the diver's information processing device 1 displays the normal time and measures the dive time, the clock output from the oscillation circuit 31 is input to the control unit 50 via the frequency dividing circuit 32, A clock section 6 in which the counter 33 measures time in units of one second.
8 are configured. Further, since the information processing apparatus 1 for divers 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, the pressure sensor 34 (semiconductor pressure) Sensor), an amplifier circuit 35 for amplifying the output signal of the pressure sensor 34, and an A / D converter for converting an analog signal output from the amplifier circuit 35 and a filter circuit 73 described later into a digital signal and outputting the digital signal to the control unit 50. A water depth measuring unit 61 (water pressure measuring means) including the circuit 36 is configured. 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 operation mode, which will be described later, is realized by each process performed by the CPU 51 based on the stored program. Also,
The RAM 54 is used as a memory for recording diving results as log data, a working memory for performing various calculations, and the like. Furthermore, the information processing apparatus 1 for divers
A receiving unit 71 that receives various data including oxygen concentration data as mixing ratio information by ultrasonic waves, an amplifier circuit 72 that amplifies an output signal of the receiving unit 71, and a noise component or the like that is removed from the output signal of the amplifier circuit 72. And a filter circuit 73 that outputs the signal to the AD conversion circuit 36.
Here, the configuration of the display unit will be described. Figure 1 again
In (A), a plurality of display areas are provided on the display surface of the liquid crystal display panel 11, and the display performed in these display areas is basically as follows. First, the first display area 111 located on the upper side of the drawing 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 mode, which will be described later. Sometimes the current water depth,
The current date, depth rank, diving date (log number), etc. are displayed.

A second display area 112 located on the right side of the drawing from the first display area 111 includes a diving mode, a surface mode (time mode), a planning mode,
In the log mode, the dive time, current time, dive time, and dive start time (dive time) are displayed. The third display area 113 located below the first display area 111 in the drawing has a maximum water depth, a body nitrogen discharge time, and a safety in the diving mode, the surface mode (time mode), the planning mode, and the log mode, respectively. The level and the maximum water depth (average water depth) are displayed. Fourth display area 1 located on the right side of the drawing from third display area 113
In the diving mode, the surface mode (time mode), the planning mode, and the log mode, the dive time, the water surface stop time, and the dive end time (the maximum water temperature at the depth of the water) are displayed in 14. In a fifth display area 115 located below the third display area 113 in the drawing, a power capacity exhaustion warning 104 and an altitude 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 right side of the drawing from the sixth display area 116 is provided with an area for displaying the concentration of oxygen gas. A display area 117 as an area for displaying the oxygen gas concentration is an area indicating whether nitrogen (inert gas) tends to be absorbed or exhausted when the decompression diving state is entered in the diving mode, It is also used as an area for displaying "SLOW" as one of the ascent speed violation warnings indicating that the speed is too fast, and as an area for displaying "DECO" as a warning that decompression diving has been reached during diving. Further, in the present embodiment, an eighth display area 118 and a ninth display area 119 are formed in an area adjacent to the third display area 113 and the fourth display area 114 on the lower side in the drawing. These display areas 1
At 18, 119, information for protecting the diver from oxygen sickness (oxygen poisoning) is displayed based on which value the oxygen mixing ratio is set to, as described later.

[2] Configuration of Mixing Ratio Information Detection and Transmission Unit FIG. 3 shows a schematic configuration block diagram of the mixing ratio information detection and transmission unit. The mixing ratio information detecting and transmitting unit 80 includes a CPU 81 that controls the entire mixing ratio information detecting and transmitting unit 80.
A ROM 82 storing programs and data for the CPU 81 to perform various processes, a RAM 83 for temporarily storing various data, and an operation monitoring switch 84 for monitoring whether or not diving has been started. An oxygen sensor 85 attached to a valve portion of the air tank, for detecting oxygen concentration, an amplifier circuit 86 for amplifying and outputting an output signal of the oxygen sensor 85, and converting an analog signal output from the amplifier circuit 86 into a digital signal. An A / D conversion circuit 87 for outputting to the CPU 81, a frequency generation circuit 88 for generating a carrier signal having a predetermined frequency, and a data signal corresponding to oxygen concentration data corresponding to the oxygen concentration detected by the oxygen sensor 85. A signal generation circuit 89, a mixing circuit 700 for modulating a carrier signal with a data signal, and an output signal of the mixing circuit 700 Amplifier amplifies and outputs the 701
And a transmission unit 702 that converts an output signal of the amplification circuit 701 into an ultrasonic wave and transmits the ultrasonic wave to the reception unit 71 (see FIG. 2). In this case, the operation monitoring switch 84 has the same configuration as the water input monitoring switch 30 (see FIG. 1), and includes two exposed electrodes.
It is determined that water has entered when these electrodes conduct with seawater or the like and the resistance between the electrodes decreases.

[3] Functional Configuration In FIG. 4, the amount of nitrogen in the body (the amount of inert gas in the body) is calculated in the information processing apparatus 1 for divers of the present embodiment, and based on the calculation result, the time of nitrogen discharge in the body and no-decompression diving FIG. 3 shows a functional block diagram for calculating safety information such as possible time.
As shown in FIG. 4, the information processing apparatus 1 for divers includes:
The in-vivo nitrogen amount calculation unit 60 that simulates the manner in which nitrogen contained in the respiratory gas is absorbed into and exhaled from the body and calculates the in-vivo nitrogen amount (in-vivo nitrogen partial pressure) is configured. Note that the calculation of the amount of nitrogen in the body described below is merely an example, and it goes without saying that various methods can be used as a method of calculating the amount of nitrogen in the body. In the body nitrogen amount calculation unit 60, first, in order to calculate the body nitrogen amount as a partial pressure, a water depth measurement unit 61 using the pressure sensor 34, the amplification circuit 35, and the A / D conversion circuit 36 shown in FIG. CPU 51, ROM 53, RAM 5 shown in FIG.
Respiratory nitrogen partial pressure calculator 62 implemented as the function of 4,
A respiratory nitrogen partial pressure storage unit 63 using the RAM 54 shown in FIG. 2, a CPU 51, a ROM 53, and a RAM shown in FIG.
A nitrogen partial pressure calculation unit 64 realized as a function of 54;
The internal nitrogen partial pressure storage unit 65 using the RAM 54 shown in FIG. 2, the clock unit 68 using the time counter 33 shown in FIG. 2, the CPU 51, the ROM 53, and the RAM shown in FIG.
54 is realized as a function of
A comparison unit 66 for comparing data stored in the internal nitrogen partial pressure storage unit 65 with the CPU 51 and the ROM 5 shown in FIG.
3. A half-saturation time selection unit 67 realized as a function of the RAM 54 is configured.

Of these components, the respiratory nitrogen partial pressure calculating section 62, the internal nitrogen partial pressure calculating section 64, the comparing section 66 and the half-saturation time selecting section 67 are composed of the CPU 51 and the ROM of FIG.
53 and the RAM 54 can be realized as software, but can also be realized by using only a logic circuit which is hardware, or by combining a logic circuit and a processing circuit including a CPU and software. In this configuration example, the water depth measuring unit 61 determines the water depth P corresponding to the time t.
(T) is measured and output. Respiratory nitrogen partial pressure calculator 62
Calculates and outputs the respiratory nitrogen partial pressure PIN2 (t) based on the water depth P (t) output from the water depth measurement unit 61. If the respiratory air is air and the oxygen mixture ratio is 21% and the nitrogen mixture ratio is 79%, the respiratory gas nitrogen partial pressure PIN2
(T) is calculated from the depth P (t) of the dive using the following equation: PIN2
(T) = 0.79 × P [bar] can be obtained by calculation. Here, P [bar] is an absolute pressure including the atmospheric pressure. The respiratory nitrogen partial pressure storage unit 63 stores the PI calculated by the respiratory nitrogen partial pressure calculator 62 as
The value of N2 (t) is stored. Nitrogen partial pressure calculator 64
Calculates the internal nitrogen partial pressure PGT (t) for each compartment with different rates of nitrogen absorption / extraction. Taking one compartment as an example, dive time t = t0 to tE
PGT ((tE))
Is the nitrogen partial pressure PGT (t0) in the body at t0 and the dive time t
It is calculated from E and the half-saturation time TH.

As shown in FIG. 11, the half-saturation time TH is calculated from the internal nitrogen partial pressure PGT (t0) at the time t0 as shown in FIG. In the process of reaching pressure PIIG
This corresponds to a time (half time) required to reach an intermediate pressure between (t0) and the respiratory nitrogen partial pressure PIIG. Taking one tissue as an example, the dive time t = t0 to tE
The exhausted body nitrogen partial pressure PGT (tE) is stored in the body nitrogen partial pressure storage unit 65 as the body nitrogen partial pressure PGT (tE) at the end of diving (t = tE0). The calculation formula for that is as follows. PGT (tE) = PGT (t0) + @ PIN2 (t0)-
PGT (t0)｝ × {1-exp (-K (tE-t0) /
TH)｝ Here, K is a constant obtained experimentally.

Next, the comparing unit 66 stores the internal nitrogen partial pressure PIN2 (t) stored in the respiratory nitrogen partial pressure storage unit 63.
And PGT which is a calculation result of the body nitrogen partial pressure calculation unit 64
(T) is compared, and as a result, the half-saturation time TH used in the internal nitrogen partial pressure calculation unit 64 is made variable by the half-saturation time selection unit 67. For example, the respiratory nitrogen partial pressure PIN2 (t0) at t = t0 is stored in the respiratory nitrogen partial pressure storage unit 63, and the internal nitrogen partial pressure PGT (t0) is stored in the internal nitrogen partial pressure storage unit 65. Suppose you have The comparison unit 66
The respiratory nitrogen partial pressure PIN2 (t0) and the internal nitrogen partial pressure P
GT (t0) is compared. And the internal nitrogen partial pressure calculator 6
4, the time t = t
The body partial pressure PGT (tE) at the time of E is calculated. (1) When PGT (t0)> PIN2 (t0) PGT (tE) = PGT (t0) + ｛PIN2 (t0) −
PGT (t0)｝ × {1-exp (-K (tE-t0) /
TH1)｝ (2) When PGT (t0) <PIN2 (t0) PGT (tE) = PGT (t0) + ｛PIN2 (t0) −
PGT (t0)｝ × {1-exp (-K (tE-t0) /
TH2)｝

In the above two equations, TH2 <TH1. When PGT (t0) = PIN2 (t0), the half-saturation time TH is preferably determined as in the following equation. TH = (TH1 + TH2) / 2 The measurement of time such as time t0 or time tE is managed by the timer 68 shown in FIG. Here, the reason why the half-saturation time TH differs between PGT (t0)> PIN2 (t0) and PGT (t0) <PIN2 (t0) will be described.

First, when PGT (t0)> PIN2 (t0), nitrogen is excreted from the body. Conversely, when PGT (t0) <PIN2 (t0), nitrogen is absorbed into the body. Is the case. That is, since the discharge of nitrogen takes a longer time than the absorption of nitrogen, the half-saturation time TH1 when nitrogen is discharged is set to be longer than the half-saturation time TH2 when nitrogen is absorbed. Since the simulation of the amount of nitrogen in the body can be performed more strictly by changing the half-saturation time between the time of discharge and the time of absorption, if the upper limit of the amount of nitrogen in the body is set, Thus, it is possible to obtain the time during which no decompression diving is possible or the time from when the body reaches the surface of the water until the amount of nitrogen in the body returns to a normal state. Therefore, if such information is notified to the diver, the safety during diving can be further improved. Therefore, if a permissible value of the nitrogen partial pressure in the body is set, the time required to reach this permissible value at a certain water depth (water pressure) (a dive time 302: here indicates a non-decompression dive time, but In the description of the above, it is assumed that the dive time indicates the non-decompression diving time or the dive time.), And the time until the internal nitrogen partial pressure drops to the equilibrium value on the water surface (in vivo nitrogen excretion time 201). You can ask.

In the information processing apparatus 1 for divers of the present embodiment, a dive possible time calculating section 92 and a body nitrogen discharging time calculating section 91 for calculating the dive possible time 302 and the body nitrogen discharge time 201 as diver safety information. Is configured. Here, each of the dive possible time calculation unit 92 and the body nitrogen discharge time calculation unit 91 is realized as the functions of the CPU 51, the ROM 53, and the RAM 54 shown in FIG. When calculating the respiratory nitrogen partial pressure PIN2 (t) based on the water depth P (t) output from the water depth measurement unit 61, the respiratory nitrogen partial pressure calculating unit 62 uses oxygen and oxygen as described later. When using a respiratory gas in which the mixture ratio of nitrogen is different from air, the pressure of the mixed gas is set to P, and the calculation is performed by the following equation. PIN2 (t) = (1−oxygen concentration) × P Here, in the case of nitrox gas, 1−oxygen concentration = nitrogen concentration (nitrogen mixture ratio). That is, when the oxygen mixture ratio is 32% and the nitrogen mixture ratio is 68%, PIN2 (t) = 0.68 × P [b
ar] When the oxygen mixture ratio is 36% and the nitrogen mixture ratio is 64%, the respiratory nitrogen partial pressure PIN2 (t) is determined from PIN2 (t) = 0.64 × P [bar].

[4] Description of Operation Mode In the information processing apparatus 1 for divers having the above configuration, as described below with reference to FIG. 5, the time mode ST1, the surface mode ST2, the planning mode ST3, the setting mode ST4, Each operation mode of the diving mode ST5 and the log mode ST6 exists. Note that the characteristic operation and display of the diving mode ST5 in the present embodiment will be described later, and FIG. 5 shows an eighth display area 118 and a ninth display area 119 among the display areas of the liquid crystal display panel 11. The display is omitted.

[4.1.1] Time Mode The time mode ST1 is an operation mode in which the switch is not operated, the internal nitrogen partial pressure is in an equilibrium state, and the portable device is carried on land. Contains the current month and day 1
00, current time 101, and altitude rank 103 are displayed. When the altitude rank = 0, the altitude rank is not displayed. The current time 101 indicates to the user that the current display is the current time 101 by blinking a colon (:). Also, the seventh display area 1
17 displays the oxygen concentration based on the oxygen concentration data transmitted by the mixing ratio information detection transmission unit 80.
For example, in the state shown in FIG. 5 and FIG.
Current month 100 = December 5 and current time 101 =
It is 10:06, indicating that the current oxygen concentration is 36.5%.

By the way, the air pressure changes not only when diving but also when moving between high and low altitudes above sea level. Will happen. Therefore, in the information processing apparatus for diving of the present embodiment, when the operation mode is the time mode ST1, the decompression calculation is automatically started even when there is such a pressure change due to the altitude change. The display shifts to the decompression calculation result display.
That is, the time since the altitude (atmospheric pressure) is changed, the time until the nitrogen in the body reaches the equilibrium state, and the amount of nitrogen discharged or dissolved from the present time to the equilibrium state are displayed.

[4.1.2] Operation to shift to another mode In this time mode ST1, when the switch A is pressed, the mode shifts to the planning mode ST3. Also, switch B
Pressing moves to the log mode ST6. Further, the switch B is kept pressed for a predetermined time (for example, 5 seconds).
If the button is kept pressed, the mode shifts to the setting mode ST4.

[4.2] Surface Mode The surface mode ST2 is a mode in which 48
This mode is for carrying on land until the time has elapsed.
The diving information processing apparatus 1 automatically switches to the surface mode S when the water entry monitoring switch 30 that has been in the conductive state during the diving is insulated after the previous diving is completed.
The process shifts to T2. In the surface mode ST2, the current month and day 100, the current time 101 and the altitude rank 10 displayed in the time mode ST1 are displayed.
In addition to 3, an indication of a change in the amount of nitrogen gas in the body after the end of the dive is displayed. In the seventh display area 117, the oxygen concentration based on the oxygen concentration data transmitted by the mixture ratio information detection transmission unit 80 is displayed. In other words, the time required for the excess nitrogen gas dissolved in the body to be exhausted to the outside of the body and to reach an equilibrium state is equal to the body nitrogen excretion time 20.
It is displayed as 1. This body nitrogen excretion time 201
The time until the nitrogen gas in the body reaches the equilibrium state is displayed as a countdown. And the body nitrogen excretion time 201 is
When the time to be displayed reaches 0 hour and 00 minutes, the display is not displayed thereafter. In addition, the elapsed time after the end of the diving is displayed as the water surface rest time 202. In the diving mode to be described later, the water surface stop time 202 starts counting the time when the next point at which the water depth becomes shallower than 1.5 meters is completed, and turns off the display when 48 hours have elapsed since the end of the diving. Become. Therefore, in the information processing apparatus 1 for diving, the surface mode ST2 is set on land until 48 hours after the end of the diving, and thereafter, the mode shifts to the time mode ST1.

The specific display screen in the surface mode ST2 is, as shown in FIGS. 5 and 6B, the current date 100 = December 5 and the current time 101 = 11.
It is 58 minutes, the water surface rest time 202 is 1 hour and 13 minutes, 1 hour and 13 minutes have passed since the end of the dive, and it indicates that the current oxygen concentration is 36.5%. In addition, it is displayed that the amount of nitrogen gas absorbed into the body by the diving performed so far corresponds to four marks in the in-vivo nitrogen graph 203, and from this state, excess nitrogen in the body is exhausted and an equilibrium state is established. It indicates that the time until the internal nitrogen excretion time 201 is 10 hours and 55 minutes.

[4.2.1] Operation to shift to another mode In this surface mode ST2, pressing switch A shifts to the planning mode ST3. When the switch B is pressed, the mode shifts to the log mode ST6. Further, while pressing the switch A, the switch B is operated for a predetermined time (for example,
If the button is kept pressed for 5 seconds, the mode shifts to the setting mode ST4.

[4.3] Planning Mode The planning mode ST3 is an operation mode in which the maximum depth of the dive to be performed next and the standard of the dive time can be input. In the planning mode ST3, as shown in FIGS.
1, a dive time 302, a safety level, an altitude rank, a water surface rest time 202, and a body nitrogen graph 203 are displayed. In the seventh display area 117, the oxygen concentration based on the oxygen concentration data transmitted by the mixture ratio information detection transmission unit 80 is displayed. The display of the rank of the water depth rank 301 is sequentially changed every predetermined time. Each depth rank 301 is, for example, 9 m, 1 m,
2m, 15m, 18m, 21m, 24m, 27m, 30
m, 33m, 36m, 39m, 42m, 45m, 48m
And the display is switched every 5 seconds. In this case, if the mode has shifted from the time mode ST1 to the planning mode ST3, since there is no excessive nitrogen accumulation in the body due to past diving, that is, the initial diving planning, the display mark of the in-vivo nitrogen graph 203 is 0, depth of 15m
In this case, the display shows that no-decompression diving time is 66 minutes. This indicates that in the case of the above example, non-decompression diving is possible at a water depth of 12 m or more and 15 m or less and less than 66 minutes.

On the other hand, if the mode has shifted from the surface mode ST2 to the planning mode ST3, as shown in FIG. 7B, the repetitive diving in which excess nitrogen is accumulated in the body due to past diving. For,
Four marks are displayed on the body nitrogen graph 203,
When the water depth is 15 m, the display shows that no-decompression diving time = 45 minutes. This indicates that in the case of the above example, non-decompression diving is possible at a water depth of 12 m or more and 15 m or less and less than 45 minutes. Here, dive time 3
02 has a different value if the nitrogen partial pressure of the respiratory gas changes.
However, in the present embodiment, the nitrogen mixture ratio (oxygen mixture ratio) of respiration may be externally changed for nitrox diving as described later, so that the nitrogen mixture ratio of the respiratory gas that is set at all times is diving. It is configured to be reflected in the calculation of the possible time 302.

[4.3.1] Operation to shift to another mode In this planning mode ST3, the water depth rank 3
Switch A is set to 2
If pressed for more than a second, the mode shifts to the surface mode ST2. After the depth rank 301 is displayed as 48 m, the mode automatically shifts to the time mode ST1 or the surface mode ST2. If the switch is not operated for a predetermined period, the surface mode ST2 or the time mode S
Since the process automatically shifts to T1, there is no need to perform a switch operation each time, which is convenient for the diver. Further, when the switch B is pressed, the mode shifts to the log mode ST6.

[4.4] Setting Mode In the setting mode ST4, as shown in FIG.
This is an operation mode for setting ON / OFF of a warning alarm, setting of a safety level, and manual setting of an oxygen concentration in addition to the setting of 0 and the current time 101. In this setting mode ST4, as shown in FIG. 8A, the current date 100, the current year 106, the current time 101, the safety level (not shown), the alarm on / off (not shown), the altitude rank And oxygen concentration are displayed. Of these items, the safety level is a level for performing normal decompression calculation, and a level for performing decompression calculation on the assumption that the user will move to a higher rank place after dive. It is possible to select a level. In addition,
If there is excessive nitrogen accumulation in the body due to diving in the past, a nitrogen graph 203 in the body is also displayed as shown in FIG. The ON / OFF of the alarm is a function for setting whether or not to sound various warning alarms from the sound notification device 37. If the alarm is set to OFF, the alarm does not sound. This is because a device such as the diver's information processing device 1 which needs to keep the battery dead as much as possible can be prevented from being inadvertently running out of battery due to power consumption due to an alarm. .

In the 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 oxygen concentration manual setting (see FIG. 5). , The display of the setting target portion blinks. 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 of the setting item changes quickly. Here, the manual setting of the oxygen concentration will be described in detail. The manual setting of the oxygen concentration is performed by the transmitting unit 702 or the receiving unit 71.
In a contingency such as a failure, a diver who is a user uses the automatic setting instead of the automatic setting. In the actual operation, when the B button is operated while the density display is blinking, the operation shifts to the manual setting. In the initial state, the display of the seventh display section is "-..-%", and if the A button is pressed in this state, the control shifts to the detection timing setting at the time of the automatic setting without changing the automatic setting. Becomes
By operating the B button while the display of the seventh display section is "-.-%", the oxygen concentration can be set. Then, when the setting of the oxygen concentration is completed, the set value is determined by pressing the A button. When the set value of the oxygen concentration is determined, the process proceeds to the detection timing setting at the time of the automatic setting. By operating the B button, one of “one time” and “continuous” is selected, and the A button is determined. Become. The mode of “one time” in the detection timing setting is the transmission unit 70
2 and the body of the diver's information processing apparatus 1 do not always enter the water at the same time. Therefore, for example, for 5 minutes after the entry of water, oxygen concentration data is transmitted and received every second, and then transmission is stopped. The main body of the information processing device 1 for divers performs processing based on the received oxygen concentration data.

"One time" in this detection timing setting
The mode of is used in normal diving, since there is only one air tank and the calculation may be performed with the oxygen concentration value set at the start, so there is no problem even if the reception is stopped, This is because it is preferable from the viewpoint of power consumption. The “continuous” mode in the detection timing setting corresponds to the transmission unit 702 and the divers information processing apparatus 1.
In any of the main units, the oxygen concentration data is transmitted and received every minute, for example, every minute from when water is detected until water is no longer detected. As a result, the oxygen concentration can be continuously monitored during diving, and calculations can always be performed based on the actual concentration in the current air tank.Therefore, even when the oxygen concentration changes like a closed scuba, etc. You can do safe diving. Similarly, when diving by switching or replacing a plurality of tanks, there is no need to set the respective mixing ratios in the diver's information processing device 1 in advance, and the danger of forgetting to set can be avoided. When the switch A is pressed while the oxygen concentration display is blinking in the seventh display area 117, the display returns to the surface mode ST2 or the time mode ST1. If neither of the switches A and B is operated for a predetermined period (for example, 1 to 2 minutes), the mode automatically returns to the surface mode ST2 or the time mode ST1.

[4.5] Diving Mode The diving mode ST5 is an operation mode during diving. As shown in FIG. 9, in the non-decompression diving mode ST51, the current water depth 501, the dive time 502, and the maximum water depth 50 are used.
3. This is an operation mode in which information necessary for diving, such as dive time 302, in-vivo nitrogen graph 203, and altitude rank, is displayed. For example, in the state shown in FIG. 9, it is displayed that 12 minutes have elapsed since the start of the diving, the water depth is 16.8 m, and at this water depth, non-decompression diving can be continued for another 42 minutes. I have. Further, it is displayed that the maximum water depth up to the present is 20.0 m, and that the current amount of nitrogen gas in the body is at a level where four marks in the body nitrogen graph 203 are lit. . In the diving mode ST5, since the rapid ascent causes decompression sickness, the ascent speed monitoring function operates. In other words, the current ascent rate is calculated every predetermined time (for example, every 6 seconds), and the calculated ascent rate is compared with the ascent rate corresponding to the current water depth. If it is faster, the alarm device 37 emits an alarm sound (floating speed violation warning alarm) at a frequency of 4 [kHz] for 3 seconds, and the liquid crystal display panel 11 sets the T, "SLO" on the liquid crystal display panel 11 so as to reduce the rising speed.
W "and the current depth are displayed at predetermined intervals (for example,
(1 second cycle) alternately to display a warning of ascent rate violation.

Further, the vibration generator 38 warns the diver by vibration that the flying speed is violated. When the ascent speed drops to a normal level, the ascent speed warning is stopped. In addition, diving mode S
At T5, when the switch A is pressed, the mode shifts to the current time display mode ST52 only while the switch A is kept pressed, and the current time 101 and the current water temperature 504 are displayed.
In the current time display mode ST52, the current time is 10:18 in the state shown in FIG.
It is indicated that 4 = 23 [° C.]. in this way,
Since the current time 101 and the current water temperature are displayed for a predetermined period when the switch operation is performed in the diving mode ST5, it is assumed that only data necessary for diving is normally displayed in a small display screen. (No-decompression diving mode ST1), the current time 101 and the like can be displayed as needed (current time display mode ST52), which is convenient. Moreover, in the diving mode ST5 as well, since the switch operation is used for switching the display, it is possible to display information desired by the diver at an appropriate timing. In the state of the diving mode ST5, when the water surface rises to a place where the water depth is shallower than 1.5 m, it is considered that the diving has been completed, and the dive operation monitoring switch 30 becomes insulated by the dive operation monitoring switch 30 being insulated. Automatically shifts to the surface mode ST2.

In the meantime, the CPU 51 shown in FIG. 2 performs one dive operation from when the water depth becomes 1.5 m or more to when the water depth becomes less than 1.5 m again as a dive result (dive result during this period). Various data such as a dive date, dive time, and maximum water depth) are stored and held in the RAM 54.
At the same time, if the above-mentioned ascent speed violation warning is given two or more times continuously during this dive, that fact is also recorded in the diving result. The diver's information processing device 1 of the present embodiment is configured on the premise of non-decompression diving. However, when it becomes necessary to perform decompression diving, the diver is notified with an alarm to that effect. Further, the operation mode is shifted to the decompression diving display mode ST53. In the decompression diving display mode ST53, the current water depth 501, diving 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 507
Is displayed. In the state shown in FIG. 9, it is displayed that 24 minutes have elapsed since the start of diving and the water depth is 29.5 m. In addition, since the amount of nitrogen gas in the body exceeds the maximum allowable value and is dangerous, an instruction is displayed to ascend to a depth of 3 m while maintaining a safe ascent speed, and stop decompression for 1 minute there. As a result, the diver floats after stopping the decompression based on the display content.

[4.6] Log Mode The log mode ST6 is a function for storing and displaying various data when diving for more than 3 minutes deeper than 1.5m in the diving mode ST5. Such diving data is sequentially stored for each dive as log data, and a predetermined number (for example, 10 times) of diving log data is stored and held. When diving is performed for more than the maximum number of stored data, the oldest data is deleted in order, and the latest log data is always stored. Note that, even when diving is performed for a number of times equal to or greater than the maximum number of storages, a part of the log data can be retained without being deleted by setting in advance. It is possible to shift to the log mode ST6 by pressing the switch B in the time mode ST1 or the surface mode ST2.

In the log mode ST6, the log data has two screens that are switched every predetermined time (for example, 4 seconds). As shown in FIG. 10, the first screen ST6
In 1, the dive date 601, the average depth 609, the dive start time 603, the dive end time 604, the altitude rank, and the graph 203 of the in-vivo nitrogen at the end of the dive are displayed. On the second screen ST62, a log number 605 indicating the number of diving on the day of diving, a maximum water depth 608, a dive time 606, and a water temperature 60 at the maximum water depth are displayed.
7. The altitude rank and the in-vivo nitrogen graph 203 when diving is completed are displayed. For example, in the state shown in FIG.
With the altitude rank = 0, diving starts at 10:07 on the second dive on December 5,
It ends at 45:45 and displays that the dive was for 38 minutes. In this diving, the average water depth is 1
4.6m, maximum water depth 26.0m, water temperature at maximum water depth 6
07 is 23 [° C.], and after the dive is completed, the marks on the in-vivo nitrogen graph 203 indicate that nitrogen gas equivalent to four lightings has been absorbed into the body.

As described above, the log mode ST6 of this embodiment is used.
In, since various information is displayed while automatically switching between two screens, even if the display screen is small, the amount of information that can be displayed can be substantially increased, and the visibility does not decrease. Further, in the log mode ST6, every time the switch B is pressed, the display is sequentially switched from new data to old data, and after the oldest log data is displayed, the mode shifts to the time mode ST1 or the surface mode ST2. Even when a part of the log data of all the log data has been displayed, the switch B is kept pressed for more than 2 seconds to switch the time mode ST1 or the surface mode S1.
The process can shift to T2. Further, even when neither of the switches A and B is operated for a predetermined time (1-2 minutes), the operation mode automatically returns to the surface mode ST2 or the time mode ST1. Therefore, the diver does not need to perform the switch operation, and the usability is improved. When switch A is pressed, planning mode ST
Move to 3.

[5] Configuration for Protecting Divers from Oxygen Sickness In the information processing apparatus for divers 1 of the present embodiment configured as described above, in order to protect divers during diving from oxygen sickness (oxygen poisoning), It is configured as follows. When the diver attaches the mixing ratio information detection transmission unit 80 to the valve portion of the air tank and starts diving, the operation monitoring switch 84 is turned on, and the CPU 81 detects that diving has started. Accordingly, the oxygen sensor 8
5 detects the oxygen concentration and outputs a detection signal to the amplifier circuit 86. The amplification circuit 86 amplifies the output signal of the oxygen sensor 85 and outputs it to the A / D conversion circuit 87. The A / D conversion circuit 87 converts the analog signal output from the amplification circuit 86 into a digital signal and outputs the digital signal to the CPU 81. Accordingly, the CPU 81 controls the frequency generation circuit 88 and the signal generation circuit 89 to generate a carrier signal having a predetermined frequency in the frequency generation circuit 88, and the signal generation circuit 89 corresponds to the oxygen concentration detected by the oxygen sensor 85. A data signal corresponding to the oxygen concentration data is generated. Mixing circuit 700
Modulates the carrier signal with the data signal,
Output to 01. Amplifying circuit 701 amplifies the output signal of mixing circuit 700 and outputs the amplified signal to transmitting section 702.

As a result, the transmitting section 702 is
1 is converted into an ultrasonic wave, and the oxygen concentration data is transmitted to the receiving unit 71. The degree of the oxygen concentration can be determined by, for example, as shown in FIG. 5, the seventh display area 1 of the liquid crystal display panel 11 in the display unit 10.
17 is shown. In the state shown in FIG. 5, the oxygen concentration = 3
It is displayed as 6.5%. In the case where the air and oxygen concentrations are the same, if there is a margin in the number of display digits, "AIR" or the like may be displayed so that the diver can easily recognize that the air is air. Referring again to FIG. 4, in the diver's information processing apparatus 1 according to the present embodiment, based on the current water depth value (water pressure value) measured by the water depth measurement unit 61 and the oxygen concentration detected by the mixture ratio information detection transmission unit 80, An oxygen partial pressure calculating unit 95 that calculates the respiratory oxygen partial pressure 906 at the current water depth position is configured.

As shown in FIG. 6, the respiratory oxygen partial pressure 906 at the current water depth position calculated by the oxygen partial pressure calculating unit 95 is a right area of the eighth display area 118 of the liquid crystal display panel 11 on the display unit 10. Will be displayed. That is, in the present embodiment, the oxygen partial pressure calculating unit 95 determines whether or not the oxygen partial pressure is greater than the allowable oxygen partial pressure value when the respiratory oxygen partial pressure 906 exceeds the allowable oxygen partial pressure value. Based on the detection result and the measurement result (water pressure value) of the water depth measurement unit 61, the following formula is used. Respiratory oxygen partial pressure = (current water pressure + atmospheric pressure) × respiratory oxygen partial pressure from the mixing ratio of oxygen in the respiratory air. 90
6 is obtained, and its value is displayed on the liquid crystal display panel 11.
For example, if the oxygen concentration is 36% and the current water depth is 16 m, the corresponding water pressure value is 1.6 bar and the atmospheric pressure is assumed to be 1.0 bar. The partial pressure 906 becomes 0.9 bar. here,
The allowable value of the respiratory oxygen partial pressure 906 is generally set to 1.6 bar from the viewpoint of preventing oxygen sickness. Therefore,
The diver has a respiratory oxygen partial pressure 906 of an allowable value (1.6b).
ar) If it is below, it is a proper diving,
You can protect yourself from oxygen sickness. It should be noted that the oxygen partial pressure calculating unit 95 is configured by the CPU 51 and the ROM 5 shown in FIG.
3. It is realized as a function of the RAM 54.

In the information processing apparatus 1 for divers according to the present embodiment, the current respiratory oxygen partial pressure 906 becomes the allowable oxygen partial pressure value (1.6 bar) based on the calculation result of the oxygen partial pressure calculating section 95. An oxygen partial pressure determining unit 96 for determining whether or not the pressure exceeds the predetermined value is configured.
When 06 exceeds the allowable oxygen partial pressure value, the effect is notified to the diver as an alarm sound or vibration from the sound notification device 37 or the vibration generation device 38, and the liquid crystal display panel 11
Above, the display of the respiratory oxygen partial pressure 906 flashes. In this manner, a notification unit that notifies a diver that the respiratory oxygen partial pressure 906 exceeds the allowable oxygen partial pressure is realized. The oxygen partial pressure determination unit 96 is also configured by the CPU shown in FIG.
51, ROM 53, and RAM 54.

In the information apparatus for divers 1 of the present embodiment, an allowable water depth value 907 for diving with the breathing air of the detected mixing ratio is calculated based on the detection result of the mixing ratio information detecting and transmitting unit 80. The calculation unit 93 is also configured. This allowable water depth value calculation unit 93 can also be realized as the functions of the CPU 51, the ROM 53, and the RAM 54 shown in FIG. In the present embodiment, when calculating the allowable water depth value 907 from the oxygen mixture ratio of the respiratory gas, it is considered that oxygen sickness occurs when the respiratory oxygen partial pressure 906 exceeds the allowable oxygen partial pressure value. Water depth calculation unit 93
Is determined from the oxygen mixture ratio of the respiratory gas obtained based on the oxygen concentration obtained via the mixture ratio information detection and transmission unit 80 to which depth position the respiratory gas oxygen partial pressure exceeds the allowable oxygen partial pressure value. Is calculated. For example, the permissible water depth value calculation unit 93 calculates the permissible water depth value = (permissible oxygen partial pressure value / mixing ratio of oxygen in respiratory gas) −atmospheric pressure water depth conversion value; It is also possible to determine the allowable water depth value 907 from = 1.6 bar and display the value on the liquid crystal display panel 11 on the display unit 10.

In this case, for example, when the oxygen concentration is 36
%, The allowable value of the respiratory oxygen partial pressure is 1.6 bar. Therefore, it may be configured to display that it does not cause oxygen sickness even if diving to a depth of 34 m (permissible water depth value 907). Furthermore, in the diver's information device 1 of the present embodiment, as described above, the diving possible time calculating unit 92 determines, from the current nitrogen content in the body, how long the dive is possible at a certain water depth value thereafter (dive The possible time 302) is calculated, and based on the measurement result of the timer 68 and the temporal change of the respiratory oxygen partial pressure up to the present time derived from the respiratory oxygen partial pressure 906 calculated by the oxygen partial pressure calculator 95. The time during which diving can be continued (diving possible time 302)
Is calculated. Here, the two dive possible times 302 obtained from different viewpoints may be displayed on the liquid crystal display panel 11, but in the present embodiment, the shorter of the two dive possible times 302 is used for the purpose of further enhancing safety. Is displayed. In this embodiment, the dive time 30 based on the respiratory oxygen partial pressure 906
2 is calculated using the above-mentioned Dick Rutkows.
The values shown in Table 1 are used with reference to "Nitrox MANUAL" written by Ki.

[0061]

[Table 1]

The index TP of the dive time shown in Table 1
Means the maximum time during which you can dive without oxygen sickness. For example, if the respiratory oxygen partial pressure 906 is 1.6 bar from the beginning to the end, you can dive for 45 minutes, and the respiratory oxygen partial pressure 906 is from the beginning to the end. Up to 1.5 bar indicates that the user can dive for 120 minutes, and if the respiratory oxygen partial pressure 906 is 0.5 bar from beginning to end, the dive is infinite. Therefore, in this diving, the diving times tp at the respiratory oxygen partial pressures of 1.6 bar, 1.5 bar,... Have been t1.6 minutes, t1.5 minutes,.
· Then, (t1.6 / T1.6 + t1.5 / T1.5 +
·) = Σ (tp / Tp) is regarded as the degree of progression to oxygen sickness, and when the value becomes 1, it is treated as oxygen sickness. Therefore, the oxygen partial pressure calculating unit 95 determines how many minutes can be dive at the current respiratory gas and water depth position, that is, the current respiratory oxygen partial pressure Pox (oxygen mixture ratio × absolute pressure value). Using the index TPox of the dive time of dive of the following formula, dive time = TPoX x [1- (t1.6
/T1.6+t1.5/T1.5+..)]=TPox×[1
− {(Tp / Tp)] is calculated, and the value is displayed in the fourth display area 114 of the liquid crystal display panel 11 of the display unit 10. This value counts down over time in the fourth display area 114 of the liquid crystal display panel 11. The dive time 302 may be displayed as a graph.

For example, as shown in FIG.
36.5% at a water depth of 16.8m, ie
If the respiratory oxygen partial pressure 906 is kept at 0.9 bar, it is displayed that the user will not suffer from oxygen sickness even after diving for another 42 minutes (a possible diving time 302). Therefore, it can be said that the diver will not suffer from oxygen sickness if he observes the oxygen mixing ratio 905 of the selected respiratory air and the dive time 302 calculated based on the diving history in the current dive.
Thus, the information processing apparatus 1 for divers of the present embodiment
Since the oxygen concentration can be detected in real time by the mixing ratio information detection transmission unit, during the dive mode ST5, it is determined whether or not diving can be performed without causing oxygen sickness with the selected breath, or after the breath is changed. Since the diver is notified of the depth of the water to which the diver can dive, the diver can be protected from oxygen sickness. Further, since the divers information processing apparatus 1 of the present embodiment detects the oxygen concentration in real time by the mixing ratio information detection and transmission unit 80, it can be applied to a closed scuba in which the oxygen concentration changes in real time. is there.

[6] Modification of Embodiment [6.1] First Modification In the above-described embodiment, when the oxygen partial pressure of the respiratory gas at the current water depth position exceeds the allowable oxygen partial pressure, this fact is notified. However, for the purpose of further enhancing safety, the current respiratory oxygen partial pressure is a warning value obtained by multiplying the allowable oxygen partial pressure value by the safety factor, for example, 0 with respect to the allowable oxygen partial pressure value. .9
The oxygen partial pressure determining unit 96 is configured to determine whether or not the value exceeds the value obtained by multiplying the respiratory gas oxygen partial pressure at the current water depth position exceeds the warning value in the determination result of the oxygen partial pressure determining unit 96. If so, the sound emitting device 37 or the vibration generating device 38 may be configured to issue a warning to that effect.

[6.2] Second Modification In the above embodiment, the configuration is such that the oxygen concentration data is automatically taken in. However, it is also possible for the user to take in at any timing. . Further, it is also possible to configure so that the user can set the timing of capturing oxygen concentration data.

[6.3] Third Modification In the above embodiment, the oxygen concentration is detected in real time by the mixing ratio information detection / transmission unit 80.
Especially in the case of an open scuba, if the oxygen concentration is measured first, the oxygen concentration will not change, so sampling is performed immediately after the start of diving, and after that, if it is in the standby state, power consumption will be further reduced can do.

[0067]

As described above, in the information processing apparatus for divers according to the present invention, the mixing ratio of the mixed gas can be automatically set, and the water depth at which diving with the set mixing ratio is possible. Diving management information such as a value (permissible water depth value) can be generated or displayed, so that the diver can be reliably prevented from suffering from decompression sickness and oxygen sickness, and the diver's safety can be ensured. .

[Brief description of the drawings]

FIG. 1A is a plan view showing a part of an apparatus main body and an arm band of a divers information processing apparatus to which the present invention is applied, and FIG. 1B is a side view thereof.

FIG. 2 is a schematic configuration block diagram of the entire divers information processing apparatus.

FIG. 3 is a schematic configuration block diagram of a mixing ratio information detection transmission unit.

FIG. 4 is a functional configuration block diagram of the information processing apparatus for divers according to the embodiment;

FIG. 5 is an explanatory diagram of an operation mode transition state of the divers information processing apparatus.

FIG. 6 is an explanatory diagram of a display screen in a time mode and a surface mode.

FIG. 7 is an explanatory diagram of a display screen in a planning mode.

FIG. 8 is an explanatory diagram of a display screen in a setting mode.

FIG. 9 is an explanatory diagram of a display screen in a diving mode.

FIG. 10 is an explanatory diagram of a display screen in a log mode.

FIG. 11 is an explanatory diagram of a half-saturation time.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Divers information processing apparatus 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 amount calculating unit 61: Water depth measuring unit (water pressure measuring unit) 62: Respiratory nitrogen partial pressure calculating unit 63: Respiratory nitrogen partial pressure storage Unit 64: Nitrogen partial pressure calculation unit 65: Nitrogen partial pressure storage unit 67: Half-saturation time selection unit 68: Clock unit 71: Receiving unit 72: Amplifier circuit 73: Filter circuit 80: Mixing ratio information detection transmission unit 81 CPU 82 ROM 83 RAM 84 Operation monitoring switch 85 Oxygen sensor 86 Amplification circuit 87 A / D conversion circuit 88 Frequency generation circuit 89 …signal Raw circuit 91: Nitrogen excretion time calculating section in the body 92: Diving possible time calculating section 93: Allowable water depth value calculating section 95: Oxygen partial pressure calculating section 96: Oxygen partial pressure determining section 700: Mixing circuit 701 ... Amplifier circuit 702 ... Transmission unit A, B ... Switch ST1 ... Time mode ST2 ... Surface mode ST3 ... Planning mode ST4 ... Setting mode ST5 ... Diving mode ST6 ... Log mode

Claims (14)

[Claims] 1. A mixture ratio information detecting means for detecting mixture ratio information relating to a mixture ratio of oxygen and an inert gas in a mixture gas used for a mixture gas dive, and the mixture ratio information automatically taken in and taken in A diving information processing apparatus, comprising: diving management means for generating diving management information for managing a diver's diving state based on the information. 2. The information processing apparatus for divers according to claim 1, further comprising: a mixture ratio information transmitting unit that transmits the detected mixture ratio information; and a mixture ratio information receiving unit that receives the mixture ratio information. An information processing device for divers. 3. The information processing apparatus for divers according to claim 2, wherein said mixing ratio information transmitting means and said mixing ratio information receiving means perform communication using ultrasonic waves. . 4. The information processing apparatus for divers according to claim 1, wherein the mixture ratio information includes oxygen concentration information. 5. An information processing apparatus for divers according to claim 1, wherein said mixture ratio information detecting means is attached to a valve section of an air tank containing said mixed gas. . 6. The information processing apparatus for divers according to claim 1, further comprising a gas deriving unit attached to a valve portion of an air tank storing the mixed gas, for guiding the mixed gas, and detecting the mixing ratio information. The information processing apparatus for divers, wherein the means is attached to the gas deriving means. 7. The information processing apparatus for divers according to claim 1, wherein an automatic capture prohibiting unit that prohibits the diving management unit from automatically capturing the mixture ratio information, and a mixing unit that sets the mixture ratio information by a user. An information processing apparatus for divers, comprising: ratio information setting means. 8. The information processing apparatus for divers according to claim 1, further comprising a capture timing setting means for setting a capture timing of said mixing ratio information in said diving management means. . 9. The information processing apparatus for divers according to claim 8, wherein said capture timing setting means sets the capture timing at the start of diving. 10. The information processing apparatus for divers according to claim 8, wherein said capture timing setting means sets the capture timing at predetermined time intervals. 11. The information processing apparatus for divers according to claim 1, wherein the mixing ratio information detecting means includes a pressure detecting means for detecting a pressure of the mixed gas. 12. The diving information processing apparatus according to claim 1, further comprising a notifying means for notifying that the mixing ratio has not been taken in at a predetermined timing. Information processing device. 13. The diving information processing apparatus according to claim 12, wherein the predetermined timing is a time point at which the start of diving is detected. 14. A mixture ratio information detecting step of detecting mixture ratio information relating to a mixture ratio of oxygen and an inert gas in a mixture gas used for the mixture gas dive, and the mixture ratio information automatically taken in and taken in. A diving management information generating step of generating diving management information for managing a diver's diving state based on the information; and a diving information processing apparatus control method.