JP5807133B1 - Diving management system - Google Patents

Abstract

Provided is a diving management system capable of easily and quickly confirming the safety validity of ascent time and ascent depth even when a diver performs diving operations at a plurality of different depths. . A water depth sensor 10 that is attached to a diver 2 and measures a diving log including a diving depth and a diving time of the diver 2, and a shallowest specified depth within a range that does not fall below the diving depth based on the diving log. A submarine ship terminal 20 for deriving a virtual diving log approximated by, calculating a levitation stop time and a levitation stop depth based on the virtual diving log, and a display for displaying the diving log and the virtual diving log in time series And a diving management system 1. [Selection] Figure 6

Description

  The present invention relates to a diving management system for managing a levitation stop time and a levitation stop depth when a diver ascends, and more particularly, to determine a levitation stop time and a levitation stop depth when a diver performs diving work at a plurality of different diving depths. It relates to a diving management system to be managed.

  For underwater civil engineering work and surveys, divers perform diving work. When a diver ascends, due to a decrease in water pressure, a physiological inert gas such as nitrogen becomes supersaturated in the body, which may cause diving or decompression sickness due to bubbles. Therefore, in order to reduce the risk of occurrence of such diving and decompression sickness, according to the high pressure work safety and hygiene rules, according to the diving depth and diving time, the ascending stop time and the ascending stop depth that temporarily stop when ascending It has been established.

  In Patent Document 1, a water depth sensor that is attached to a diver and acquires diving information from the dive start to dive of the diver, and a diving time according to the diving depth based on the diving information, ascent method and ascent time, A diving management system is disclosed that includes an information processing apparatus that executes a calculation process of the ascent time during the second and subsequent dives in accordance with laws and regulations, and a display unit that displays a calculation process result. In this diving management system, the ascent time and the ascending depth are determined in advance in the diving plan stored in advance in the information processing device, and the diving depth and diving time are changed from the planned values in accordance with the tide during the diving operation. In the case where an error occurs between the diving information (diving log) and the diving plan, the diving plan is corrected.

JP 2009-149301 A

Diving work manual (issued by the Japan Diving Association)

  By the way, in Non-Patent Document 1 that complies with the high pressure work safety and health regulations revised on April 1, 2015, when a diver performs diving operations at a plurality of different depths, diving logs from the start of dive to the start of ascent are recorded. In view of this, it has become possible to relax the ascent time and the ascent depth.

  However, in conventional diving management systems, the ascending stop time and ascending stop depth are calculated based on the deepest dive depth and the total dive time regardless of the change in depth in the diving log. The check of the stop time and levitation stop depth could be carried out easily. However, when considering the above-mentioned mitigation, the degree of mitigation must be checked against the change in the depth of the diving log, and the burden required for checking the ascent time and the ascent depth has been corrected. There was a problem of being heavy.

  Therefore, even when a diver performs diving operations at a plurality of different depths, technical issues to be solved in order to easily and quickly confirm the safety validity of the ascent time and ascent depth The present invention aims to solve this problem.

The present invention has been proposed to achieve the above object, and the invention according to claim 1 manages the ascent time and the ascending depth when divers diving at different diving depths ascend. A diving management system, a water depth sensor that is attached to the diver and measures a diving log including a diving depth and a diving time of the diver, and within a range that does not fall below the diving depth based on the diving log and A control means for deriving a virtual diving log approximated at the shallowest prescribed depth and calculating the ascent stop time and ascent stop depth based on the virtual diving log, and combining the diving log and the virtual diving log display means for displaying in sequence, and the virtual dive log provides a deepest first least including diving management system defined depth and a shallow than the first prescribed depth second prescribed depth That.

According to this configuration, since it is possible to confirm at a glance whether the diving log displayed on the display means is safer than the virtual diving log, the ascending stop time and the ascending stop depth with complicated calculations are safe. The above validity can be easily confirmed. In other words, instead of calculating the levitation stop time and levitation stop depth based on diving logs with complex shapes according to the ascent and descent of divers, the shallowest prescribed depth within the range that does not fall below the diving depth of the diving log The ascending stop time and the ascending stop depth are calculated using a virtual diving log having a simple shape including at least the first specified depth and the second specified depth approximated in. By displaying the virtual diving log and the diving log obtained in this manner in a time series, the virtual diving log, which is the basis for the calculation of the ascent time and the ascent depth, is displayed with a safer value. Since it is possible to easily confirm whether or not they are approximated, it is possible to easily confirm the safety validity of the ascent time and the ascent depth.

  According to a second aspect of the present invention, in addition to the configuration of the diving management system according to the first aspect, a diver's ship terminal provided with the control means and an office terminal provided with the display means are connected via a network. Provide a diving management system.

  According to this configuration, the submarine ship terminal having a high processing capability necessary for the calculation of the ascent stop time and the ascent stop depth is physically separated from the office terminal with a reduced function that displays the diving log and the virtual diving log. Since it can be connected, the role can be divided between the submarine ship terminal that performs calculation and displays only the calculation result on a small screen and the office terminal that displays the diving log and virtual diving log on a large screen, The submarine ship terminal can be installed on the diver's ship in a space-saving manner while quickly checking the safety validity of the calculation result of the control means.

  According to a third aspect of the present invention, in addition to the configuration of the diving management system according to the second aspect, the levitation stop time displayed on the diver's ship terminal is input according to the start of the ascent of the diver. Provide a diving management system in which the signal starts to decrease in value.

  According to this configuration, it is easy for sailors and air crews to check the remaining ascent time displayed on the diver's ship terminal. Can do.

Since the present invention can confirm at a glance whether the diving log displayed on the display means is safer than the virtual diving log including at least the first specified depth and the second specified depth , As a result, the safety validity of the ascent time and the ascent depth can be easily confirmed.

The schematic diagram which shows the diving management system which concerns on one Example of this invention. The block diagram which shows the structure of the diving management system of FIG. The screen of a submarine ship terminal from the time a diver descends to the ascent. The screen of a submarine ship terminal while a diver is surfaced. The figure which shows the diving log from the descent start at the time of diving at several different depths to the start of ascent. FIG. 6 is a diagram showing a virtual diving log obtained by approximating the diving log of FIG. 5 and a levitation stop time and a levitation stop depth after relaxation derived based on the virtual diving log. Standard air decompression table for diving depth of 21 m. Standard air decompression table for a dive depth of 15 m. A repetitive diving table showing coefficients to be taken into consideration at the second and subsequent dives. The figure which shows the conventional levitation stop time and levitation stop depth which were derived | led-out based on the diving log of FIG.

The diving management system according to the present invention simply and promptly confirms the safety validity of the ascent time and the ascent depth even when the diver performs diving operations at a plurality of different depths. In order to achieve the object, a diving management system for managing a levitation stop time and a levitation stop depth when a diver diving at a plurality of different diving depths ascends, the diver being attached to the diver, A depth sensor for measuring a dive log including a dive depth and a dive time, and a virtual diving log that is approximated at a shallowest prescribed depth within a range that does not fall below the dive depth based on the diving log, and a control means for computing the floating stop time and floating stop depth based on the log, and display means for displaying in time series the dive log and said together a virtual dive log, the virtual latent Log is realized by including at least a deepest shallower than the first prescribed depth and the first defined depth second prescribed depth.

  Hereinafter, diving management system 1 concerning one example of the present invention is explained based on a drawing. FIG. 1 is a schematic diagram showing a diving management system 1. FIG. 2 is a block diagram showing the configuration of the diving management system.

  The diver 2 dives from the diver ship 3 into the sea 4. Air is supplied to the diver 2 from the compressor 5 of the diver's ship 3 through the hooker hose 6. The diver 2 performs a predetermined operation on the seabed 7.

  The diving management system 1 includes a water depth sensor 10 mounted on the diver 2, a diving ship terminal 20 mounted on the sea diving ship 3, an information processing device 30 installed on land, a server 40, It has.

  The diver's ship terminal 20, the information processing device end 30, and the server 40 are communicably connected via a mobile phone communication network 51 that constructs a network 50 and the Internet 52.

  The water depth sensor 10 is a known water pressure sensor or the like that measures water pressure according to the diving depth of the diver 2 continuously or intermittently to measure the diving depth and diving time of the diver 2. The diving log acquired by the water depth sensor 10 is connected to the diver's ship terminal 20 through a signal line 8 provided integrally with the hooker hose 6. The water depth sensor 10 and the diver's ship terminal 20 may be connected by wireless communication.

  The diver's ship terminal 20 is a personal digital assistant (PDA) or the like possessed by a sailor, an air supply person, or the like of the diver's ship 3. The diver's ship terminal 20 is a submerged in response to a touch input to the touch panel 23, a storage unit 21 storing a program for controlling the diver's ship terminal 20, a display 22 as a display unit, a touch panel 23 as an input unit. The control part 24 which controls the warship terminal 20 and the communication part 25 which can communicate with the information processing apparatus 30 and the server 40 via the network 50 are provided. The storage unit 21 includes a ROM, a RAM, a hard disk, and the like. The storage unit 21 stores data related to the standard air decompression table and the repetitive diving table used when calculating the ascent time and the ascent depth from the diving log of the diver 2. Specific contents of the standard air decompression table and the repetitive diving table will be described later. The control unit 24 includes a CPU. The input unit may be a physical input device such as a keyboard in addition to the touch panel 23.

  The office terminal 30 is a personal computer installed in an on-site office or the like. The office terminal 30 includes a storage unit 31 in which programs used for controlling the office terminal 30 and various arithmetic processes are stored, a display 32 as a display unit, an input unit 33 including a mouse and a keyboard, and an input unit 33. The control unit 34 controls the office terminal 30 in response to the input, and the communication unit 35 that can communicate with the submarine ship terminal 20 and the server 40 via the network 50. The storage unit 31 includes a ROM, a RAM, a hard disk, and the like. The control unit 34 includes a CPU. The input unit 33 may be a touch panel. The office terminal 30 may be a portable terminal such as a tablet PC having a communication function.

  The server 40 includes a storage unit 41 in which programs used for the control of the server 40 and various arithmetic processes are stored, and a control unit 42 that controls the server 40 in response to processing requests of the submarine ship terminal 20 and the office terminal 30. And a communication unit 43 capable of communicating with the diver's ship terminal 20 and the server 40 via the network 50.

  As described above, the diving ship terminal 20 having high processing capacity necessary for the calculation of the ascent stop time and the ascent stop depth is installed in the diving ship 3, and the saving function of displaying the diving log and the virtual diving log on the display 32 is provided. When the office terminal 30 is installed on the land, the ascent stop time and the ascent stop depth can be quickly calculated, and the diver's ship terminal 20 can be installed on the diver's ship 3 in a space-saving manner. When the office terminal 30 is a portable terminal, the director or the like can compare the diving log with the virtual diving log even outside the field office.

  Next, a procedure for obtaining the ascent time and the ascent depth of the diver 2 using the diving management system 1 will be described with reference to the drawings. FIG. 3A is a screen displayed on the display 22 before diving, and FIG. 3B is a screen displayed on the display 22 during diving work. FIG. 4A is a screen displayed on the display 22 during the ascent, and FIG. 4B is a screen displayed on the display 22 while the ascent is stopped.

  First, when the diver 2 starts diving from the diver's ship 3, the sailor or the air supply person of the diver's ship 3 is displayed on the display 22 of the diver's ship terminal 20 and the diving start button B1 shown in FIG. Press. When the dive start button B1 is pressed, the water depth sensor 10 measures the diving log and sends the diving log to the diver's ship terminal 20.

  The diving log sent to the diver's ship terminal 20 is sent to the server 40. The transmission of the diving log may be either real-time processing or batch processing.

  When the diver 2 finishes the diving operation, a sailor or an air supply person of the diver's ship 3 presses the levitation start button B2 shown in FIG. When the ascent start button B2 is pressed, the control unit 24 of the submarine ship terminal 20 derives a virtual diving log based on the diving log, performs an ascent stop time and ascent stop depth calculation process, and outputs them to the server 40. Send to. In addition, the decompression time in FIGS. 3 (a) and 3 (b), that is, the levitation stop time is a planned value set before diving. A specific procedure for deriving the virtual diving log and a specific calculation process of the ascent stop time and the ascent stop depth will be described later.

  The server 40 stores the diving log, the virtual diving log, the ascent time, and the ascending depth transmitted from the diver's terminal 20 in the storage unit 41.

  In addition, as shown in FIG. 4A, the display 22 displays the suspension time for each suspension depth based on the calculation result of the control unit 24. At this time, the planned value of the decompression time is replaced with the levitation stop time and the levitation stop depth calculated by the control unit 24 based on the actual diving log.

  Next, when the diver 2 starts ascending and reaches the ascending stop depth, a crew member or an air supply person of the diver ship 3 presses the arrival button B3 shown in FIG. When the arrival button B3 is pressed, a countdown start signal is input to the submarine ship terminal 20, and the control unit 24 starts to decrease the numerical value of the ascending stop time on the display 22.

  When the levitation stop time on the display 22 becomes zero, the sailor or the air-feeder of the submarine ship 3 informs the diver 2 and the diver starts to rise again. As described above, since the sailor and the air supply crew of the diving ship 3 can easily check the remaining ascent time displayed on the diver's ship terminal 20, the diving person is encouraged to ascend during the ascending stop time without any excess or deficiency. Can do.

  Next, specific calculation processing of the ascent stop time and the ascent stop depth when the diver 2 dives at a plurality of different diving depths will be described with reference to the drawings. FIG. 5 is a diagram showing a diving log from the start of dive to the start of ascent when diving at a plurality of different depths. 6A shows a virtual diving log obtained by approximating the diving log of FIG. 5, and FIG. 6B shows the levitation derived based on the virtual diving log of FIG. 6A. It is a figure which shows stop time and levitation stop depth. FIG. 7 is a standard air decompression table for a diving depth of 21 m. FIG. 8 is a standard air decompression table for a dive depth of 15 m. FIG. 9 is a repetitive diving table showing coefficients to be considered at the second and subsequent dives. FIG. 10 is a diagram illustrating the levitation stop time and the levitation stop depth derived based on the diving log of FIG. 5 by a conventional method that does not consider diving at different depths.

  Specific calculation procedures for the ascending stop time and the ascending stop depth in diving work are defined in related laws and regulations such as the high-pressure work safety and hygiene rules and Non-Patent Document 1 based on the laws. The office terminal 30 visualizes the levitation stop time and the levitation stop depth derivation process guided in accordance with these laws and manuals so that a diving supervisor or the like can easily see at a glance. Specifically, the office terminal 30 calls the diving log, the virtual diving log, the ascent time and the ascent depth stored in the server 40, and displays the time series on the display 32 together with the diving log and the virtual diving log. At the same time, the levitation stop time and the levitation stop depth are displayed on the display 32. In the following embodiment, a case where the diver 2 performs diving work at two different depths will be described as an example, but the same applies even when the diving work is performed at three or more different depths. .

  First, the control unit 24 derives a virtual diving log as shown in FIG. 5 based on the diving log measured by the water depth sensor 10. The virtual log is obtained by approximating the diving log. The approximation of the diving log is performed by regarding the diving depth as the shallowest of the prescribed depths set within a range that is not lower than the diving depth of the diving log and at predetermined intervals (every 3 m in this embodiment). For example, when the diving depth is 20 m on the diving log, it is regarded as 21 m on the virtual log. In this manner, as shown in FIG. 6A, the diving log has a complicated shape that undulates as the diver 2 moves up and down, but the virtual diving log has a simple polygonal shape. .

  In the virtual diving log, the difference between the deep diving depth and the shallow diving depth must be equal to or greater than a predetermined minimum value. When the deep diving depth is less than 30 m, the minimum allowable diving depth difference is set. Is 6 m, and when the deep diving depth is 30 m or more, the minimum allowable diving depth difference is 9 m.

  Next, the control unit 24 obtains the deepest diving depth in the virtual diving log and the diving time at the diving depth, and obtains the second deepest diving depth in the virtual diving log and the diving time at the diving depth. In this embodiment, as shown in FIG. 6A, the deepest diving depth is 21 m, and the diving time at the diving depth is 60 minutes. The second deepest dive depth is 15 m, and the dive time at the dive depth is 30 minutes.

  Next, the control unit 24 converts the diving time at the deepest diving depth into the diving time at the second deepest diving depth. Specifically, first, the control unit 24 reads a repetitive diving group symbol H corresponding to a diving depth of 21 m and a diving time of 60 minutes based on the standard air decompression table of FIG. 7 corresponding to the diving depth of 21 m. The “standard air decompression table” is a table for reading the ascending stop time and the ascending stop depth from the diving depth and the diving time. The “repetitive diving group symbol” is an index indicating the influence of the nitrogen gas existing in the diving body that has reached the diving depth on the human body. Next, the control unit 24 derives a dive time corresponding to a dive depth of 21 m and a dive time of 60 minutes at a dive depth of 15 m from the repeated dive group symbol in the standard air decompression table of the dive depth of 15 m in FIG. In the present embodiment, since the repeated diving group symbol H does not exist in the standard air decompression table having a diving depth of 15 m, the more severe repeated diving group symbol I is used. Thus, the dive time of 60 minutes at the dive depth of 21 m is required to correspond to the dive time of 100 minutes at the dive depth of 15 m.

  Next, the control unit 24 adds the dive time of 100 minutes at a dive depth of 15 m corresponding to a dive time of 60 minutes at a dive depth of 21 m and the dive time of 30 minutes at a dive depth of 15 m, that is, 130 minutes to a dive depth of 15 m. It is regarded as a dive time at. In addition, when the diver 2 performs diving several times a day, the coefficient corresponding to the repetitive diving group symbol and the standby time in the previous diving is set to 130 minutes from the repetitive diving table of FIG. Multiply to get corrected dive time. The “repetitive diving table” indicates a coefficient by which the diving time according to the waiting time is multiplied when the same diver 2 dives a plurality of times.

  In this embodiment, when diving at a plurality of different depths, the ascent time is reduced in consideration of the diving time at each diving depth, but conventionally, the deepest dive depth and the total diving time are reduced. Ascent time and ascent depth were calculated. That is, in the case of the diving log as shown in FIG. 5, the diving time is 90 minutes at a diving depth of 21 m. From the standard air decompression table in FIG. I had to. FIG. 10 shows a diving log reflecting the calculation results of the conventional ascent time and ascent depth.

  Next, the control unit 34 of the office terminal 30 calls the diving log and virtual diving log stored in the storage unit 41 of the server 40, and displays the diving log and virtual diving log as shown in FIG. 6 (b). It is displayed on the display 32 in a time series. As a result, supervisors of diving work etc. visually check whether the virtual diving log is correctly approximated without comparing the diving depth and the approximated value one by one and confirming correctness. be able to. That is, when the diver 2 dives at different depths, it is possible to greatly simplify the confirmation process of the derivation process of the virtual diving log in the calculation of the ascending stop time and the ascending stop depth with complicated calculations.

  In this way, the invention according to the present embodiment described above involves complicated calculations because it is possible to confirm at a glance whether the diving log displayed on the display means is safer than the virtual diving log. The safety validity of the ascent time and ascent depth can be easily confirmed.

  In addition, a diver's ship terminal and an information processing device are connected via a network, and a diver's ship terminal, a diving log, and a virtual diving log that have high processing capabilities necessary for calculating the ascent time and ascent depth are displayed. As a result, it is possible to connect the submarine ship terminal while promptly executing the safety validity of the levitation stop time and the levitation stop depth by the information processing device. Can be installed on a diving vessel in a space-saving manner.

  In addition, the levitation stop time displayed on the diver's ship terminal starts to decrease due to the countdown start signal input in response to the start of the diver's ascent. Since it is easy to check the remaining ascent time displayed on the terminal, it is possible to prompt the diver to ascend at the ascending time without excess or deficiency.

  The present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

DESCRIPTION OF SYMBOLS 1 ... Diving management system 2 ... Diver 3 ... Diver ship 5 ... Compressor 6 ... Hooker hose 8 ... Signal line 10 ... Depth sensor 20 ... Diver ship Terminal 21 ... Storage unit (of diving ship terminal) 22 ... Display (of diving ship terminal) 23 ... Touch panel 24 ... Control unit (of diving ship terminal) 25 ... (Diving Communication unit 30 (of the ship terminal) ... Office terminal 31 ... Storage unit (of the office terminal) 32 ... Display (of the office terminal) 33 ... Input unit 34 ... (office) Control unit 35 (of terminal) Communication unit (of office terminal) 40 ... Server 41 ... Storage unit 42 ... Control unit 43 ... Communication unit 50 ... Network

Claims (3)

A diving management system for managing a levitation stop time and a levitation stop depth when divers diving at a plurality of different diving depths ascend,
A water depth sensor that is attached to the diver and measures a diving log including a diving depth and a diving time of the diver,
Control means for deriving a virtual diving log approximated at the shallowest prescribed depth within a range not less than the diving depth based on the diving log, and calculating the ascent stop time and ascent stop depth based on the virtual diving log When,
Display means for displaying the diving log and the virtual diving log in time series;
Equipped with a,
The diving management system , wherein the virtual diving log includes at least a deepest first specified depth and a second specified depth shallower than the first specified depth .   The diving management system according to claim 1, wherein the diver's ship terminal including the control unit and the office terminal including the display unit are connected via a network.   3. The diving management system according to claim 2, wherein a numerical value of the ascending stop time displayed on the diver's ship terminal starts to decrease in response to a countdown start signal input in response to the ascending start of the diver.