JPH10250683A - Information processing device for divers - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make judgement whether the surfacing speed is proper in the conditions which suit the current situation and issue properly an alarm to notify that the speed is in violation against the regulations. SOLUTION: An information processing device for divers includes an alarming means 77 for violation against the specified surfacing speed, and when monitoring is made to know whether the speed is proper, the current surfacing speed measured by a surfacing speed measuring means 75 is compared with the upper limitation 76 set at certain water depth intervals. The upper limitation 76 is set so as to admit a comparative large surfacing speed at a deep place and admit only a small surfacing speed at a shallow place. If two alarms are issuzed successively during the diving, the fact should be recorded in a diving result recording means 78.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus for divers, also called a dive computer. More specifically, the present invention relates to a technique for warning a flying speed violation in such an information processing apparatus.

[0002]

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

[0003]

(Equation 1)

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

According to this equation, Pigt (t ₀ ) <PI
In the case of ig, the internal gas partial pressure Pigt (t _E ) increases, that is, absorbs the inert gas, and Pigt (t ₀ )>
In the case of PIig, the internal gas partial pressure Pigt (t _E )
Decreases, ie, discharges inert gas.

[0006] That is, the absorption / discharge of the inert gas into the body is determined by the relationship between the partial pressure of the inert gas in the body and the inert gas of the respiratory gas, irrespective of ascent or descent. Therefore, if the amount of inert gas in the body is grasped from this magnitude relationship,
Since the time required for the amount of inert gas in the body to return to the normal state after diving is known, the diver can be protected from decompression sickness and the number of dives, which was considered twice a day until then, is reduced Depending on the history, it can be increased.

Further, from the viewpoint of preventing decompression sickness, if the ascent rate is too high, inert gas such as nitrogen dissolved in the body becomes bubbles and causes decompression sickness.
It is also important to keep the ascent rate to the surface. Therefore, the conventional diver's information processing device monitors the ascent rate,
When the ascent speed is faster than one preset ascent value, a warning is issued that the ascent speed is violated,
It is configured to inform the diver.

[0008]

Here, the inventor of the present application has made various studies, as well as the fact that the amount of inert gas accumulated in the body is affected by the residence time at the water depth.
We found that the upper limit of the ascent rate also depends on the water depth. However, in the conventional information processing device for divers,
Since the upper limit value for determining whether the ascent speed is appropriate is constant regardless of the water depth, the upper limit value of the ascent speed is set to be relatively small from the viewpoint of emphasizing safety. . As a result, in a place where the water depth is relatively deep, a warning that the flying speed is violated is issued frequently even though the flying speed has a margin, and information that is considerably deviated from the current state is provided. Conversely, if the rising speed upper limit is set to a relatively large value to prevent a warning from being issued erroneously, decompression sickness cannot be reliably prevented.

In view of the above problems, according to the present invention, it is determined whether or not the flying speed is appropriate under conditions suitable for the current situation.
An object of the present invention is to provide a diver's information processing device that can appropriately issue a warning that the flying speed is violated.

[0010]

In order to solve the above problems, an information processing apparatus for divers according to the present invention comprises: a depth measuring means for measuring the depth of a dive; and a time measuring means for measuring the elapsed time during a dive. A rising speed measuring means for measuring a rising speed at the time of ascent based on the measurement result of the timing means and the measurement result of the water depth measuring means; and a measurement result of the rising speed measuring means and a preset rising speed upper limit value. If the current ascent rate is higher than the ascent rate, the ascent rate warning means for giving a warning of the ascent rate violation is provided. As a value, a predetermined rising speed upper limit value is provided for each water depth range,
The warning is performed based on a comparison result between the ascent speed upper limit value corresponding to the current water depth and the current ascent speed.

In the present invention, when monitoring whether or not the ascent speed is appropriate, a predetermined ascent value of the ascent speed is set for each water depth range, and the upper limit of the ascent speed corresponding to the current water depth and the current ascent speed are determined. Make a comparison. For example, the rising speed upper limit is set to a large value when the water depth is deep, and is set to a small value when the water depth is shallow. In other words, the ascent rate is an important issue, rather than the absolute value change of the water pressure value during ascent, the magnitude of the water pressure ratio before and after ascent per unit time, and where the water depth is deep, even if ascending by the same water depth , Should be smaller than where the water pressure ratio is shallow. Therefore, in the present invention, a relatively high flying speed is allowed at a deep position, and only a relatively low flying speed is allowed at a shallow position. As described above, the determination as to whether or not the ascent speed is appropriate is made in terms of preventing decompression sickness, so that a warning suitable for preventing decompression sickness can be issued.

[0012] In the present invention, it is preferable that the ascent speed violation warning means is configured not to issue a warning of the ascent speed violation when the current water depth is shallower than the diving end determination water depth value. In other words, when the time from when the water depth measured by the water depth measuring means becomes deeper than the diving start determination depth to when it becomes shallower than the diving end determination depth is treated as one dive operation, the dive end determination When the water depth is shallower than the water depth value, the water depth is regarded as 0 m. However, when the ascent speed violation warning means issues a rising speed violation warning in such a shallow place as in a deep place, the water depth value is determined from the water depth value for judging the dive end. When the arm moves several centimeters slightly deeper and the water depth is considered to be 0m, which is slightly shallower than the diving end determination water depth value, the ascent speed violation warning is issued even though the ascent speed is being protected. Will be emitted. As a result, divers question the reliability of ascent speed warnings. However, according to the present invention, when the current water depth is shallower than the predetermined value, no warning of the ascent speed violation is issued. Therefore, since the above-mentioned unnatural warning is not issued, the confidence in the warning can be increased.

[0013] In the present invention, there may be further provided a diving result recording means for recording a diving result. In this case, the diving result recording means is such that the ascent speed violation warning means continuously performs the dive once. Then, it is preferable to record as a result of the dive the fact that the ascent of the ascent rate has been violated when a plurality of warnings are issued. Even if the ascent rate is maintained as a whole, a warning of ascent rate violation may be accidentally issued, and if such an alert is also saved as a dive record, the diver tends to neglect it.
However, according to the present invention, only when a plurality of warnings are given continuously during one dive, the fact is recorded, and when there is only one dive speed violation warning by accident, it is not recorded as a dive record. . Therefore, when the ascent of the ascent rate is recorded, the diver will use it as an important reflection in future diving.

The information processing apparatus for divers according to the present invention, for example, measures the amount of inert gas excessively accumulated in the body during diving and monitors the above-mentioned ascent rate, and a diving mode to be performed from now on. A planning mode for setting a plan for diving and a time period until the amount of inert gas accumulated in the body returns to a normal state when the inert gas is excessively accumulated in the body due to diving performed so far. It is configured to be used by switching between the surface mode.

[0015]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

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

In FIG. 1, a diver's information processing apparatus 1 of the present embodiment is also called a dive computer, and measures the amount of nitrogen accumulated in the body during diving (nitrogen partial pressure in the body). Based on the results, the display indicates the rest time to be taken on land after diving. In this information processing apparatus 1, arm bands 3 and 4 are connected to a 6 o'clock side and a 12 o'clock side of a wristwatch, respectively, with respect to a rectangular apparatus main body 2, and these wristbands 3 and 4 provide the same It can be worn on your arm. The apparatus main body 2 has an upper case 21 and a lower case 22 which are fixed in a completely watertight state by screws or the like, and a substrate (not shown) on which various electronic components and the like are mounted is housed inside. ing.

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. I have. Therefore, the switch operation is easy even during diving. Here, the switches A and B are
As will be described later, an operation unit 5 for selecting and switching each mode performed in the information processing apparatus 1. Device body 2
At the 9 o'clock side of the wristwatch, a diving operation monitoring switch 30 using a moisture detection sensor for monitoring whether or not diving has started is configured. The diving operation monitoring switch 30 includes two electrodes 31 and 32 exposed on the upper surface of the apparatus main body.
It is determined that diving has started when the electrodes 1 and 32 conduct with seawater or the like and the resistance between the electrodes 31 and 32 decreases. However, the diving operation 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 been started. That is, the arm on which the information processing apparatus 1 is mounted may only be immersed in seawater, and in such a case, it should not be treated as having started diving. Therefore, in the information processing apparatus 1 of the present embodiment, the water depth (water pressure) is equal to or higher than a predetermined value by a pressure sensor built in the apparatus main body.
It is considered that the diving has started when the depth becomes deeper than 5 m, and that the diving has been completed when the depth becomes lower than this water depth value.

As shown in FIG. 2, the information processing apparatus 1 of the present embodiment has a liquid crystal display panel 1 for displaying various information.
1, a display unit 10 including a liquid crystal driver 12 for driving the same, 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. The outputs from the diving operation monitoring switch 30 using the switches A and B and the moisture detection sensor are input to the control unit 50.

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

The information processing apparatus 1 measures and displays the water depth, and also measures the amount of nitrogen gas (inert gas) accumulated in the body from the water depth (water pressure) and the dive time. Pressure sensor 34 (semiconductor pressure sensor), amplifier circuit 35 for the output signal of pressure sensor 34, and A / D converter circuit for converting an analog signal output from amplifier circuit 35 into a digital signal and outputting the digital signal to control unit 50 The water depth measuring means 61 provided with 36 is constituted. Further, the information processing apparatus 1 includes a sound notification device 37 and a vibration generation device 38, and can transmit a warning or the like to a diver as an alarm sound or vibration.

In the present embodiment, the control unit 50 includes a CPU 51 for controlling the entire apparatus, and a control circuit 52 for controlling the liquid crystal driver 12 and the time counter 33 under the control of the CPU 51. Each mode, which will be described later, is realized by each process performed by the CPU 51 based on the executed program.

[Floating Speed Monitoring Function] The diver's information processing apparatus 1 is configured to monitor the diver's floating speed during a diving mode described later.
U51, ROM 53, RAM 54 and the like are used to realize the following configuration. In other words, as shown in FIG. 3, in the divers information processing apparatus 1, the measurement result of the clock unit 68 and the water depth measurement unit 61 Ascent rate measuring means 7 for measuring the ascent rate during ascent based on the measurement result
5 is compared with the measurement result of the ascent rate measuring means 75 and a preset ascent rate upper limit value 76, and if the current ascent rate is higher than the ascent rate upper limit value 76, a warning that the ascent rate is violated is issued. A rising speed violation warning unit 77 is configured. The rising speed measuring means 75 is provided by the CPU 5 shown in FIG.
1, while the flying speed violation warning means 77 is implemented as an arithmetic function of the ROM 53 and the RAM 54.
It is realized as functions such as a PU 51, a ROM 53, a RAM 54, a sound emitting device 37, a vibration generating device 8, and a display on the liquid crystal display panel 11.

In this embodiment, the ascent speed warning means 7
7 compares the current ascent rate with the current ascent rate for each of the water depth ranges stored in the ROM 53 as the ascent rate value 76, and determines whether the current ascent rate corresponds to the current ascent rate. When the speed is faster than 76, the display on the liquid crystal display panel 11 and the generation of an alarm sound from the alarm device 37 are performed.
Further, a warning of the rising speed violation is issued by a method such as transmission of vibration from the vibration generator 38 to the diver, and the warning of the rising speed violation is stopped when the rising speed returns to the state lower than the rising speed upper limit value 76. In the present embodiment, the following values are used as the above-mentioned ascending speed upper limit value 76 for each water depth range. Current measured water depth value Ascending speed upper limit value less than 1.8 m No warning 1.8 m to 5.9 m 8 m / min (approx. 8 m / 6 sec) 6.0 m to 17.9 m 12 m / min (about 1.2 m / 6 sec) 18.0 m or more 16 m / min (about 1.6 m / 6 sec) is set. That is, where the water depth is deep,
This is because even if the ascent is performed at the same ascent speed, the water pressure ratio before and after ascent per unit time is small, so that even if a relatively high ascent speed is allowed, decompression sickness can be sufficiently prevented. On the other hand, in a place where the water depth is shallow, the water pressure ratio before and after the ascent per unit time is large even when ascending at the same ascent speed, so that only a relatively small ascent speed is allowed.

In this embodiment, the depth of water per 6 seconds is stored in the ROM 53 as the upper limit of the ascent speed.
As shown in the figure, the water depth is measured every second, but in order to prevent the movement of the arm wearing the diver's information processing device 1 from affecting the ascent speed, the ascent speed measurement is performed every six seconds. Therefore, the difference between the current water depth measurement value and the previous water depth measurement value six seconds before is calculated, and the difference is regarded as the floating speed, and is compared with the above floating speed upper limit value (m / 6 seconds). Because you do.

Further, as shown in FIG.
Has a water depth value of 1.5 m measured by the water depth measuring means 61.
(From the water depth for diving start determination)
The dive results (diving date, dive time, various data such as the maximum water depth) are taken as one dive operation until the dive becomes shallower than 5 m (water depth value for diving end determination).
Diving result recording means 78 is stored and stored in the AM 54. The diving result recording means 78 is also realized as a function of the CPU 51, the ROM 53, and the RAM 54 shown in FIG. Here, the dive result recording means 78 indicates that the ascent rate violation warning means 77 gives a plurality of warnings continuously for one dive,
For example, it is configured to record as a dive result that a rising speed violation has occurred when two or more warnings are issued in succession. The fact that the ascent of the ascent was violated is also reproduced and displayed.

The diving result recording means 78 starts from the time when the water depth measured by the water depth measuring means 61 becomes deeper than 1.5 m (water depth for judging the start of diving). Until shallow, the dive time is measured based on the measurement result of the timing means 68. If the dive time is less than 3 minutes, the dive during this time is not treated as one dive. Do not record. The diving result recording means 78 stores and retains a maximum of 10 diving results as log data, and when diving more, the oldest data is deleted in order, so it is important to record short dives such as dives. This is because the result of the diving is deleted.

As described above, in the diver's information processing apparatus 1 according to the present embodiment, when the state where the water depth is deeper than 1.5 m continues for 3 minutes or more, it is treated as the first dive, so that the water depth is smaller than 1.5 m. When ascending to a shallow position, the water depth is considered to be 0 m, and the indication is 0 m. Therefore, if the rising speed violation warning means 77 issues a rising speed violation warning even in such a shallow place as in a deep place, the arm moves several centimeters where the water depth is slightly deeper than 1.5 m, and the water depth becomes lower. If it is regarded as 0 m, which is slightly shallower than 1.5 m, a flying speed violation warning will be issued even though the flying speed is maintained.
As a result, divers question the reliability of ascent speed warnings. However, in the present embodiment, when the current water depth is shallower than the predetermined value (1.5 m), no warning of the rising speed violation is issued regardless of the rising speed. Therefore, since the above-mentioned unnatural warning is not issued, the confidence in the warning can be increased. That is, as shown in FIG. 4, for example, the previously measured water depth during the ascent is 1.8.
m, ascends from this position as shown by the solid line L11,
If the current water depth measured after the elapse of 6 seconds is less than 1.5 m (water depth value for diving end determination), no warning that the flying speed is violated is issued.

[Explanation of Display Unit] Referring again to FIG. 1A, the display surface of the liquid crystal display panel 11 has eight display areas. As will be described in detail later, of these eight display areas, the first display area 111 located on the 12 o'clock side of the wristwatch is the largest of the respective display areas, and includes a diving mode described later. , Surface mode (time mode), planning mode, log mode, current water depth, current month and day, water depth rank,
The dive date (log number) is displayed. Second display area 112 located on the 3 o'clock side of first display area 111
Indicates a dive time, a current time, a no-decompression dive available time, and a dive start time (dive time) in the diving mode, the surface mode (time mode), the planning mode, and the log mode, respectively. First display area 111
The third display area 113 located on the 6 o'clock side includes a maximum water depth, a body nitrogen discharge time, a safety level, and a maximum water depth in the diving mode, the surface mode (time mode), the planning mode, and the log mode, respectively. Average water depth) is displayed. A fourth display area 114 located on the 3 o'clock side of the third display area 113 has a no-decompression diving time and a water surface stop in the diving mode, the surface mode (time mode), the planning mode, and the log mode, respectively. The time, temperature and diving end time (maximum water temperature at depth) are displayed. 6 from the third display area 113
In a fifth display area 115 located on the hour side, a power supply exhaustion warning 104 and a high rank 103 are displayed. In a sixth display area 116 located at the 6 o'clock side of the liquid crystal display panel 11, the amount of nitrogen in the body is graphically displayed. Also,
A seventh display area 117 located on the 3 o'clock side of the sixth display area 116 displays whether nitrogen (inert gas) tends to be absorbed or discharged when the decompression diving mode is entered in the diving mode. An area indicating whether there is any of them, an area displaying "SLOW" as one of the ascent speed violation warnings indicating that the ascent speed is too high, and "DECO" as a warning that decompression diving has been reached during diving are displayed. An area is configured.

As described above, on the display surface of the liquid crystal display panel 11, the area for displaying the current water depth (the first display area 111) is the largest in the diving mode, so that the diver has important data. It is easy to see the display of the current water depth. 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 due to the upper case 21 around the display surface of the liquid crystal display panel 11, the current water depth in the diving mode is not affected. Since the display area (first display area 111) is arranged on the 12 o'clock 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 of the present embodiment, it is easy to visually recognize the display of the current water depth, which is important data.

[Explanation of Method for Calculating Nitrogen Content in Body] FIG. 5 is a functional block diagram for explaining an example of a configuration for calculating a partial pressure of nitrogen in the body (amount of nitrogen in the body) in the information processing apparatus 1 for divers of the present embodiment. It is. The calculation of the amount of nitrogen in the body shown here is merely an example, and various methods can be used. Therefore, a configuration for that will be briefly described here.

As shown in FIG. 5, in the diver's information processing apparatus 1 of the present embodiment, the pressure sensor 34 and the amplifying circuit 3 shown in FIG.
5. Water depth measuring means 61 using the A / D conversion circuit 36,
2, a respiratory nitrogen partial pressure calculating means 62 realized as a function of the CPU 51, the ROM 53, and the RAM 54 shown in FIG.
2, the respiratory nitrogen partial pressure storage means 63 using the RAM 54 shown in FIG. 2, the CPU 51 shown in FIG.
The internal nitrogen partial pressure calculating means 64 realized as the function of No. 4,
The internal nitrogen partial pressure storage means 65 using the RAM 54 shown in FIG. 2, the time counting means 68 using the time counter 33 shown in FIG. 2, the CPU 51, the ROM 53, and the R shown in FIG.
A comparison unit 66 implemented as a function of the AM 54 and comparing data stored in the respiratory nitrogen partial pressure storage unit 63 and the internal nitrogen partial pressure storage unit 65, the CPU 5 shown in FIG.
1, a half-saturation time selection means 67 realized as a function of the ROM 53 and the RAM 54. Among these components, the respiratory nitrogen partial pressure calculating means 62, the internal nitrogen partial pressure calculating means 64, the comparing means 66, the half-saturation time selecting means 6
7 is the CPU 51, ROM 53, and RAM 5 of FIG.
4 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 with a processing circuit including a CPU and software.

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

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

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

The internal nitrogen partial pressure calculating means 64 calculates the internal nitrogen partial pressure PGT for each tissue having different nitrogen absorption / extraction rates.
Calculate (t). Taking one tissue as an example, the internal nitrogen partial pressure P absorbed / exhausted from dive time t = t ₀ to t _E
GT (t _E ) is the internal nitrogen partial pressure at time t ₀ PGT (t ₀ )
, Dive time t _E , and half-saturation time T _H. Then, the result is stored as PGT (t _E ) in the internal nitrogen partial pressure storage means 65. The calculation formula for that is as follows.

[0037]

(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 nitrogen partial pressure storage means 63, and PGT (t), which is the result of the internal nitrogen partial pressure means 5, and as a result, The half-saturation time selecting means 67 makes the half-saturation time T _H used in the internal nitrogen partial pressure calculating means 64 variable.

For example, the respiratory nitrogen partial pressure P at t = t ₀
Assuming that IN ₂ (t ₀ ) and the internal nitrogen partial pressure PGT (t ₀ ) are stored in the respiratory nitrogen partial pressure storage means 63 and the internal nitrogen partial pressure storage means 65, respectively, the comparison means 66 determines the PIN ₂ (T ₀ ) and PGT (t ₀ ) are compared.

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

[0042]

(Equation 3)

[0043]

(Equation 4)

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

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

Here, PGT (t ₀ )> PIN
_{When 2} (t ₀ ), nitrogen is excreted from the body, and when PGT (t ₀ ) <PIN ₂ (t ₀ ), nitrogen is absorbed into the body. Changing the half-saturation time at these times means that when nitrogen is discharged, the half-saturation time is long and it takes time to discharge, and conversely, when nitrogen is absorbed, the half-saturation time is It is short and the time required for absorption is short compared to the time required for discharge. By doing so, the simulation of the amount of nitrogen in the body can be performed more strictly, so setting the upper limit of the amount of nitrogen in the body has raised the time and water level where no decompression diving is possible from the current amount of nitrogen in the body Thereafter, the time until the amount of nitrogen in the body returns to the normal state can be determined. Therefore, if such information is notified to the diver, the safety of diving can be improved.

[Explanation of each mode] The information processing apparatus 1 configured as described above performs each mode (time mode ST1, surface mode ST2, planning mode ST3, setting mode ST4, diving mode) described below with reference to FIG. Mode ST5 and log mode ST6) can be used.

(Time Mode ST1) Time Mode ST1
Is a function for carrying on land when no switch operation is performed and nitrogen in the body is in an equilibrium state. The liquid crystal display panel 11 has a current date 100, a current time 101, and an altitude rank 102 (see FIG. 1). ./No mark is displayed when the altitude rank is rank 0.). The altitude rank 102 automatically measures the altitude of the current location and displays the altitude at three ranks. The display of the current time 101 is indicated by the blinking of the colon and the current time 1
01 is notified. For example, in the state shown in FIG. 6, it is displayed that it is 10:06 on December 5 at present.

The air pressure also changes when going up and down high places and low places above sea level, and dissolution of nitrogen into the body and discharge of nitrogen occur regardless of the presence or absence of diving in the past. Therefore, in the information processing apparatus 1 of the present embodiment, the time mode ST1
Even if the altitude changes, the decompression calculation starts automatically and the display changes. 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 from the present time to the equilibrium state are displayed.

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

1 and 2 during the time mode ST1.
When it is detected through the diving operation monitoring switch 30 that water has entered, a function check is automatically performed, and if it is confirmed that the sensors and the like are normal, the operation automatically shifts to the diving mode ST5. At this time, if there is an abnormality in the sensor or the like, the fact is notified by an alarm sound from the sound notification device 37 shown in FIG.

(Surface Mode ST2) After the dive is completed, the information processing apparatus 1 automatically shifts to the surface mode ST2 when the diving operation monitoring switch 30 that has been conducting becomes insulated. This surface mode ST2
Is a function to be carried on land until 48 hours have passed since the last dive. This surface mode S
At T2, in addition to the data (current month and day 100, current time 101, altitude rank) displayed in the time mode ST1, an indication of a change in the amount of nitrogen in the body after the end of the dive is displayed. That is, the time required for the excess nitrogen dissolved in the body to be exhausted 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
Count down the time to equilibrium. After the internal nitrogen excretion time 201 becomes 0 hour and 00 minutes, there is no display. In addition, the elapsed time after diving is
02 is displayed as the surface stop time 202, and the time measurement is started 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, there is no display. Therefore, in the information processing apparatus 1, the surface mode ST2 is kept on land until 48 hours have elapsed after the end of the diving.
After that, the time mode ST1 is set. In the state shown in FIG. 6, it is displayed that the current time is 11:58 on December 5 and that 1 hour and 13 minutes have passed since the end of the dive. In addition, the amount of nitrogen dissolved in the body by the diving performed so far
It is displayed that it corresponds to an individual, and the time from this state until the body is exhausted with excess nitrogen to reach an equilibrium state (in-body nitrogen discharge time 201) is displayed as, for example, 10 hours and 55 minutes. .

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

During the surface mode ST2, when it is detected that water has entered through the diving operation monitoring switch 30, a function check is automatically performed. If it can be confirmed that the sensors and the like are normal, the diving mode ST5
Automatically transition to. At this time, when there is an abnormality in the sensor or the like, the fact is notified by an alarm sound from the sound notification device 37 or the like.

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

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

During the setting mode ST4, a function check is automatically performed also when it is detected that water has entered through the diving operation monitoring switch 30, and if it is confirmed that the sensors and the like are normal, the diving mode ST5 Automatically transition to. At this time, when there is an abnormality in the sensor or the like, the fact is notified by an alarm sound from the sound notification device 37 or the like.

(Planning Mode ST3) The planning mode ST3 is a mode for inputting the maximum depth of the dive to be performed next and the standard of the dive time. In this mode, the water depth rank 301, the non-decompression diving time 30
2. Safety level, altitude rank, water downtime 20
2. The body nitrogen graph 203 is displayed. Water depth rank 3
The display of the rank 01 is sequentially changed from a low rank to a high rank, and the non-decompression diving time 302 at each water depth rank 301 is displayed. For example, the water depth rank 301 is 9m, 12m, 15m, 18m, 21
m, 24m, 27m, 30m, 33m, 36m, 39
m, 42 m, 45 m, and 48 m in this order every 5 seconds. At this time, if the mode has shifted from the time mode ST1 to the planning mode ST3, the plan is an initial diving without excessive nitrogen accumulation in the body due to past diving.
When the in-vivo nitrogen graph 203 is 0 and the water depth is 15 m, the no-decompression diving time 302 is displayed as 66 minutes. Therefore, it can be seen that non-decompression diving is possible at a 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, since the plan is a repetitive diving having excessive nitrogen accumulation in the body due to past diving, the in-vivo nitrogen graph 203 is equivalent to four, and Maximum water depth is 15m
In this case, the non-decompression diving time 302 is displayed as 49 minutes. Therefore, it can be understood that non-decompression diving is possible at a depth of 12 m or more and 15 m or less and less than 49 minutes.

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 mode directly 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. Further, when there is no switch operation for a predetermined period, the mode automatically shifts to the surface mode ST2 or the time mode ST1, so that it is convenient because there is no need to perform the switch operation each time. On the other hand, when the switch B is pressed, the mode directly shifts to the log mode ST6.

During the planning mode ST3,
When it is detected that water has entered through the diving operation monitoring switch 30, a function check is automatically performed, and if it can be confirmed that the sensors and the like are normal, the diving mode S
The process automatically shifts to T5. At this time, when there is an abnormality in the sensor or the like, the fact is notified by an alarm sound from the sound notification device 37 or the like.

(Diving mode ST5) The diving mode ST5 is a mode during diving. In the non-decompression diving mode ST51, the current depth 501, diving time 502,
This function displays information necessary for diving, such as the maximum water depth 503, the no-decompression diving time 302, the in-vivo nitrogen graph 203, and the altitude rank. For example, in the state shown in FIG. 6, it is displayed that 12 minutes have elapsed since the start of the dive, the water depth is 16.8 m, and at this water depth, non-decompression diving can be continued for another 42 minutes. .
In addition, it is displayed that the maximum water depth up to the present is 20.0 m.
Indicates that the level is a level in which four marks are lit.

Here, for the purpose of notifying the diver that the operation has shifted 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 need to worry about whether or not the diving mode ST5 is functioning normally, which is convenient. .

In the diving mode ST5, as described above, the rapid ascent as a function of monitoring the ascent rate causes a decompression sickness. Therefore, the current ascent rate is obtained every 6 seconds. The ascent rate is compared with the corresponding ascent rate, and if the ascent rate obtained this time is higher than the ascent rate, an alarm sound (ascent rate violation warning) is issued from the sounding device 37 at a frequency of 4 kHz for 3 seconds. LCD panel 1 so as to reduce the floating speed
At 1, the display of "SLOW" and the display of the current water depth are alternately blinked at a cycle of 1 Hz, and a rising speed violation warning is issued. Further, the vibration generator 38 warns the diver by vibration that the flying speed is violated. When the ascent speed is reduced to a normal level, the ascent speed warning is stopped.

In the diving mode ST5, when the switch A is pressed, the current time 101 and the current water temperature 504 are displayed in the current time display mode ST52 only while the switch A is kept pressed. In the state shown in FIG. 6, it is displayed that the current time is 10:18 and the water temperature is 23 ° C. Thus, the diving mode ST5
When there is a switch operation to that effect, the current time 101 and the current water temperature are displayed only for a predetermined period,
Even if only the data necessary for diving is always displayed on the small display surface (non-decompression diving mode ST51), the current time 101 can be displayed as needed (current time display mode ST52). It is convenient. Moreover, even in the diving mode ST5, the switch operation is used for switching the display, so that information desired by the diver can be displayed at an appropriate timing.

During the dive mode ST5, when the water surface rises to a position shallower than 1.5 m, the diving is regarded as being completed, and the dive operation monitoring switch 30 which has been conducting becomes insulated. Automatically shifts to the surface mode ST2. During this time, the diving result recording means 78 shown in FIG. 3 indicates that the time from when the water depth becomes 1.5 m or less to 1.5 m or less becomes one.
The result of diving during this time (various data such as dive date, dive time, maximum depth) is stored as RAM
54. In addition, if the ascent speed violation warning is given two or more times continuously during the current dive, that fact is also recorded as a diving result.

The information processing apparatus 1 according to the present embodiment is constructed on the premise of non-decompression diving.
When the decompression diving state is reached, 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, dive time 502,
Body nitrogen graph 203, altitude rank, decompression stop depth 50
5, the decompression stop time 506, and the total ascent time 507 are displayed. In the state shown in FIG. 6, 24 minutes have elapsed since the start of diving,
It is displayed that the water depth is 29.5m.
In addition, because the amount of nitrogen 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. . Further, an instruction is displayed that a safe ascent speed should take at least 5 minutes to reach the water surface.
Further, the fact that the amount of nitrogen in the body is currently increasing is displayed by an upward arrow 508. Then, the diver floats after stopping the decompression based on the above display contents. During the decompression, the downward arrow 509 indicates that the amount of nitrogen in the body is on the decrease.

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

In the log mode ST6, the log data is displayed on two screens switched every four seconds. First
In the screen ST61, the dive date 601 and the average water depth 50
9. The dive start time 603, the dive end time 604, the altitude rank, and the in-vivo nitrogen graph 203 when the dive ends are displayed. On the second screen ST62, a log number 605, which is a dive number on that day, a maximum water depth 608, a dive time 606, a water temperature 607 at the maximum water depth, an altitude rank,
A graph 203 of the in-vivo nitrogen when the diving is completed is displayed. For example, in the state shown in FIG. 6, when the altitude rank is 0, the second dive on December 5 is dive 1
After starting at 0:07, it ends at 10:45,
It is displayed that the dive was for 38 minutes. In the diving at this time, the average water depth was 14.6 m, the maximum water depth was 26.0 m, and the water temperature at the maximum water depth was 23 ° C. After the dive was completed, the nitrogen in the in-vivo nitrogen graph 203 dissolved into the body for four times. Is displayed. As described above, in the log mode ST6, various information is displayed while automatically switching between the two screens, so that a large amount of information can be displayed even if the display surface is small.

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

In the log mode ST6, every time the switch B is pressed, the data is switched from new data to old data, and after the oldest data is displayed, the mode shifts to the time mode ST1 or the surface mode ST2. If the switch B is kept pressed for 2 seconds or more during the operation, the mode shifts to the time mode ST1 or the surface mode ST2. Furthermore, even when neither of the switches A and B is pressed for 1 to 2 minutes, the mode automatically returns to the surface mode ST2 or the time mode ST1, so that it is convenient because there is no need to perform the switch operation each time. On the other hand, when the switch A is pressed, the process directly shifts to the planning mode ST3.

Also in the log mode ST6, when it is detected that water has entered through the diving operation monitoring switch 30, a function check is automatically performed, and if it is confirmed that the sensors and the like are normal, the operation automatically shifts to the diving mode ST5. I do. At this time, when there is an abnormality in the sensor or the like, the fact is notified by an alarm sound from the sound notification device 37 or the like.

[Main effects of the present embodiment] As described above, in the information processing apparatus 1 of the present embodiment, when monitoring whether the floating speed is appropriate, the predetermined floating speed upper limit value 76 is set for each water depth range. Then, a comparison is made between the ascent speed upper limit value 76 corresponding to the current water depth and the current ascent speed. In other words, the ascent rate is not a change in absolute value of the water pressure value during ascent, but the magnitude of the water pressure ratio before and after ascent within a unit time is an important issue. This is because the water pressure ratio before and after the change is small. Therefore,
In the present embodiment, a relatively high flying speed is allowed at a deep position, and only a relatively low flying speed is allowed at a shallow position. As described above, in the present embodiment, the determination as to whether or not the ascent rate is appropriate is made in terms of preventing decompression sickness. Do not warn.

In this embodiment, the diving result is recorded as one dive operation until the water depth becomes shallower than 1.5 m, and the diving result during this time is regarded as 0 m. When a rising speed violation warning is issued even in such a shallow place as in a deep place, a rising speed violation warning is issued even though the water depth is displayed as 0 m, which is unnatural. However, in this embodiment, no warning of the ascent rate violation is issued in such a shallow place. Therefore,
Since the above-mentioned unnatural warning is not issued, confidence in the warning is high.

Further, since the ascent rate is monitored only at intervals of 6 seconds, even if the ascent rate is maintained as a whole, the movement of the arm is added to the actual ascent rate, and an ascent rate violation warning is accidentally issued. If such a warning is also displayed in the log mode ST6, the diver tends to neglect the warning. However, in the present embodiment, only when there is a warning twice or more consecutively during one dive, that fact is recorded, and when there is only one dive speed violation warning by accident, it is not recorded as a dive record. . Therefore, when it is displayed in the log mode ST6 that the ascent of the ascent rate has been violated, the diver uses this as important data for future diving.

Further, in this embodiment, three modes included in the plurality of modes, namely, a planning mode ST3 for performing a plan setting of a dive to be performed from now on, and nitrogen gas accumulated in the body by the diving performed so far. Of the surface mode ST2 in which the state until the in-vivo amount of the nitrogen gas returns to the normal state is counted down as the body nitrogen discharge time 201, and the log mode ST6 for reproducing the diving results performed so far. In either mode, a direct switch can be made by one switch operation. Therefore, since there is a high degree of freedom in the transition route to each mode, it is possible to directly transit between the planning mode ST3 and the log mode ST6 with a single operation, so that a dive plan can be made while referring to past diving records. It is convenient and does not take much time to stand.

When the diving operation monitoring switch 30 detects that diving has started, when the diving operation is started, the planning mode ST3, the surface mode ST2 (the time mode ST2).
1), it is configured to automatically shift to the diving mode ST5 from any of the log mode ST6 and the setting mode ST4. Therefore, it is convenient that diving can be started immediately after confirming a previous diving record in the log mode ST6 or after setting a diving 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 for the first time after starting diving that the user has not been prepared to shift to the diving mode ST5 and has failed to shift to the diving mode ST5. Easy to use.

Further, when shifting to the diving mode ST5, a function check is performed in advance, and when an abnormality is detected in the function check, the shifting to the diving mode ST5 is automatically stopped and an alarm to that effect is given. Therefore, dive mode ST5 with abnormalities
This is convenient because there is no failure to move to and furthermore, an abnormality is immediately noticed. Moreover, since there is no failure to monitor the amount of inert gas accumulated in the body during diving,
It is safe from the viewpoint of preventing decompression sickness.

[0078]

As described above, in the information processing apparatus for divers according to the present invention, when monitoring whether or not the floating speed is appropriate, a relatively high floating speed is allowed at a deep place, and a comparison is made at a shallow place. It is characterized by monitoring the suitability of the ascent rate using the reference at the current water depth, such as allowing only a very small ascent rate. This is because the water pressure ratio before and after floating in a unit time is small even if the surface floats at the same water depth at a deep water depth. Therefore, according to the present invention, an actual determination is made in terms of preventing decompression sickness, so that an appropriate flying speed violation warning can be issued.

[Brief description of the drawings]

FIG. 1A is a plan view showing a device main body and a part of an arm band of a diver's information processing device to which the present invention is applied, and FIG. 1B is a view of the device main body viewed from 6:00 on a wristwatch. It is a side view at the time.

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

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

FIG. 4 is an explanatory diagram for explaining the purpose of not issuing a flying speed violation warning at a shallow place in an information processing apparatus for divers to which the present invention is applied.

FIG. 5 is a block diagram for measuring the amount of nitrogen in the body in the information processing apparatus for divers to which the present invention is applied.

FIG. 6 is a flowchart showing functions of a diver's information processing apparatus to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Divers information processing device 5 ... Operation part 10 ... Display part 11 ... Liquid crystal display panel 30 ... Diving operation monitoring switch (diving operation monitoring means) 34 ... Pressure sensor 37 ..Sound reporting device 38 ・ ・ ・ Vibration generating device 50 ・ ・ ・ Control unit 51 ・ ・ ・ CPU 53 ・ ・ ・ ROM 54 ・ ・ ・ RAM 61 ・ ・ ・ Hydraulic pressure measuring means 62 ・ ・ ・ Calculation of partial pressure of respiratory gas nitrogen 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 · · · Ascent rate upper limit value 77 · · · Ascent rate violation warning means 78 · Diving result recording means A, B · · · Switch ST1 · Time mode ST2 · Surface mode ST3 ... Planni Setting mode ST4 Diving mode ST6 Log mode

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuko Furuta 3-3-5 Yamato, Suwa City, Nagano Prefecture Inside Seiko Epson Corporation (72) Inventor Toshiko Koyama 3-3-5 Yamato Suwa City, Nagano Prefecture Seiko Epson Inside the corporation

Claims (5)

[Claims] 1. A water depth measuring means for measuring a water depth, a time measuring means for measuring a lapse of time during a dive, and a rising speed during ascent is measured based on a measurement result of the time measuring means and a measurement result of the water depth measuring means. Ascending speed measuring means, and comparing the measurement result of the ascent rate measuring means and a preset ascent rate upper limit value, if the current ascent rate is faster than the ascent rate upper limit value, a violation of the ascent rate. A rising speed violation warning means for giving a warning, the rising speed violation warning means includes a predetermined rising speed upper limit value for each water depth range as the rising speed upper limit value, and a rising speed upper limit value corresponding to the current water depth. An information processing apparatus for divers, wherein the warning is issued based on a result of comparison with a current ascent speed. 2. The information processing apparatus for divers according to claim 1, wherein the upper limit value of the ascent speed is set to be larger when the water depth is deeper than when the water depth is shallower. 3. The divers as claimed in claim 1, wherein the ascent rate warning means is configured not to issue a warning of the ascent rate violation when the current water depth is shallower than a predetermined value. Information processing device. 4. The method according to claim 1, wherein
Further, the dive result recording means for recording the diving result is provided.
An information processing apparatus for divers, characterized in that when a warning is issued a plurality of times consecutively during a dive, the fact that a rising speed violation has occurred is recorded as the diving result. 5. The method according to claim 1, wherein
At least, while measuring the amount of inert gas excessively accumulated in the body during diving, a diving mode for monitoring the ascent speed, a planning mode for performing a dive plan setting, and When an inert gas is excessively accumulated in the body due to the diving performed, it is configured to be switched to a surface mode for displaying a time until the amount of the inert gas accumulated in the body returns to a normal state. An information processing device for divers.