JP5186797B2 - Information processing equipment for divers - Google Patents

Description

The present invention relates to an information processing apparatus for divers, a control method and a control program for an information processing apparatus for divers, and particularly to a technique for grasping the positional relationship between divers.

When diving, diving with a diving partner (hereinafter referred to as a buddy) is required for safety reasons. For example, when the tank runs out of air, you can divide each other, and when you find a dangerous animal such as a shark, the buddies follow the other and avoid the danger. During diving, it is important to be able to communicate with the buddy at a distance that can be immediately communicated, and it is necessary to know the position of the dive from each other.

JP 2000-56005 A Japanese Patent Laid-Open No. 10-197623 JP-A-11-105787

However, in actual diving, unlike land, it is difficult to move around quickly underwater, so it is difficult to keep the positional relationship between buddies constant.
In addition, since the equipment such as a mask and a tank is attached, the field of view is narrow, and there is a problem that the body must be moved in order to bring the area other than the front into view.
Furthermore, underwater, it is possible to move not only in the horizontal direction but also in all the surrounding directions including the vertical direction. Especially in the case of underwater with low transparency, there was a situation where a few meters could not be seen, and there was a risk that it would be separated from the buddy.
On the other hand, when distance calculation or communication is performed underwater, a method using ultrasonic waves is well known.

For example, Patent Document 1 discloses a technique for receiving a signal from a transmitter and calculating a distance to the transmitter. However, the technique described in Patent Document 1 is premised on a fixed device on the transmission side, and is not suitable for applications where buddies have devices and know the distance from each other. Further, in order to search for the direction of transmission, it must be considered in three dimensions, which causes a problem that it is not easy to use.
Similarly, in the technique described in Patent Document 2, only the distance from the transmitter fixed to the ship is known,
There was a problem that the positional relationship between buddies could not be grasped.

Further, according to the technique described in Patent Document 3, information can be transmitted to the buddy in the water, but since it is impossible to grasp where the buddy is, there is a problem that the possibility that the buddy will come off is unavoidable. there were.
Therefore, an information processing device for divers, a control method for the information processing device for divers, and a control program can easily notify the diver of the position (distance and direction) of the buddy, and the diver can easily grasp the positional relationship between buddies. Is to provide.

In order to solve the above-described problem, the divers information processing apparatus includes a water depth detection unit that detects the water depth of the own device, a water depth reception unit that receives water depth data corresponding to the water depth of the external device from the external device, and the water depth detection and depth of the apparatus detected by the part, based on the water depth of the external device corresponding to the water depth data received, and depth difference calculating section that calculates a depth difference and depth difference direction between the the own device external device It is characterized in that and a notification part said depth difference calculated from the depth difference computing unit and to notify the water depth difference direction.

According to the said structure, a water depth detection part detects the water depth of an own apparatus .
On the other hand, the water depth receiving unit receives the water depth data corresponding to the water depth of the external device from the external device, and the depth difference calculating unit is the water depth of the external device corresponding to the own water depth detected by the water depth detecting unit and the received water depth data. Based on the above, the depth difference and the water depth difference direction between itself and the external device are calculated.
Thereby, a notification part notifies the depth difference and water depth difference direction which were calculated by the depth difference calculation part.
Therefore, it is possible to easily grasp the depth difference and the water depth difference direction from the external device. In particular, if the external device is an information processing device for divers equipped with buddies, the depth difference from the buddy and the direction of the water depth can be easily grasped in the water, and it is necessary to prematurely leave the buddy. Can be avoided.

Further, a transmission timing at which the external device sends the water depth data on the basis of the deviation between the reception timing when the device itself receives the depth data, the distance calculation to calculate a device distance between the own apparatus and the external device The notification unit may notify the distance between the devices .
According to the above configuration, the distance calculation unit, the apparatus distance between the external device is the self apparatus and the external device based on a reception timing shift the transmission timing and the own apparatus receives the water depth data for transmitting the water depth data Calculate and notify the distance between devices, so in addition to the depth difference between the external device and the water depth difference direction, the distance between the device and the external device, and thus the distance to the buddy, can be easily grasped. can do.
In addition, the distance calculating unit transmits data to the external device at a predetermined timing, and when receiving data corresponding to the transmitted data, calculates the distance between the devices based on the time required for transmission / reception. It may be.
According to the said structure, a relative distance can be grasped | ascertained easily based on the sound speed in water.
Further, the distance calculation unit may be configured so that a time half of the time required for the transmission / reception is a time required for the ultrasonic wave to travel the distance.
Therefore, an accurate relative distance can be calculated with a simple calculation.

The notification unit may notify the strength of the received signal of the water depth data.
According to the above configuration, the diver can intuitively grasp the distance and direction to the external device.

Further, a gain setting unit that sets a gain of an input signal according to the calculated distance to the external device may be provided .
According to the above configuration, the direction of the external device can be grasped without being affected by the signal strength.
Further, the gain setting unit may automatically set the signal level to be output according to the calculated distance to the external device.
According to the above configuration, the user of the information processing apparatus for divers can easily grasp the direction of the external device (particularly, another information processing apparatus for divers) .

Moreover, you may make it provide the warning part which performs a warning, when the calculated distance to the said external device becomes more than warning reference distance.
According to the above configuration, it is possible to maintain a state within the warning reference distance range from the external device, and particularly when the external device is another divers information processing device worn by a buddy This can be prevented.
In addition, a transparency detection unit that detects transparency in water may be provided, and the warning unit may automatically set the warning reference distance based on the transparency in water.
According to the above configuration, when the transparency is low, the warning reference distance is shortened to prevent the distance from the external device, and in particular, the other information processing device for divers that the external device is attached to the buddy In such a case, it is possible to prevent loosening.

The control method of the diver's information processing device includes detecting a water depth of its own device, and receiving the water depth data corresponding external device to the depth of the external device, a water depth of the detected own device, wherein based on the depth of the external apparatus corresponding to said received water depth data, the own device and announcement and calculating the depth difference and depth difference direction, the calculated depth difference and the depth difference direction between the external device It is characterized in that it comprises it and, a to.
According to the said structure, the depth difference with an external apparatus and a water depth difference direction can be grasped | ascertained easily. In particular, if the external device is an information processing device for divers equipped with buddies, the depth difference from the buddy and the direction of the water depth can be easily grasped in the water, and it is necessary to prematurely leave the buddy. Can be avoided.
Further, on the basis of the actual deviation of reception timing and the transmission timing of the external device includes a distance calculation step of calculating an inter-device distance between the host device and the external device, the notification process, notification of the inter-device distance You may make it do.
According to the above configuration, the distance between the device and the external device is calculated based on the difference between the transmission timing of the external device and the actual reception timing, and the calculated distance between the devices is notified. In addition to the depth difference and water depth difference directions, it is possible to easily grasp the distance to the external device and thus the distance to the buddy.

According to the present invention, the position of the buddy (at least the depth difference) can be easily notified to the diver, and the diver can more easily grasp the positional relationship between the buddies.

Next, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration block diagram of an information processing apparatus for divers according to an embodiment.
As shown in FIG. 1, the dive computer 100 that is the information processing apparatus for divers of the present embodiment is roughly divided into a processing unit 1, a water entry detection unit 2, an operation unit 3, a water depth calculation unit 4, and a display. Unit 5, input element unit 6, signal input unit 7, distance detection unit 8, gain setting unit 9, timing generation unit 10, signal output unit 11, output element unit 12, and notification unit 13 It is equipped with.

The processing unit 1 is configured as a microcomputer, and although not shown, a control program for performing communication between a CPU that controls the entire processing unit 1 and another information processing apparatus for divers with a buddy attached thereto. A ROM that stores various control programs including a ROM and a RAM that temporarily stores various data are provided.
The incoming water detection unit 2 includes two electrodes exposed on the upper surface of the apparatus main body, and determines that the water has entered when these electrodes are conducted with seawater or the like and the resistance value between the two electrodes is reduced. In addition, this water inflow detection part 2 is used to detect that water has just entered and shifts the operation mode of the dive computer 100 to the operation mode (diving mode) at the time of diving. It is not something to detect. That is, the dive computer 10
This is because the arm wearing 0 may have just been immersed in seawater, and in such a case it should not be treated as having started diving. Therefore, in the dive computer 100 of the present embodiment, the water depth (water pressure) calculated by the water depth calculation unit 4 is equal to or greater than a predetermined water depth, for example, in this embodiment, the water depth is deeper than 1.5 m (water depth value for diving start determination). It is assumed that diving started when it became.

The operation unit 3 includes a plurality of switches on which divers perform various operations.
The water depth calculator 4 has a pressure sensor (not shown), and obtains the water depth based on the pressure detected by the pressure sensor. In addition, this water depth calculating part 4 starts operation | movement when it detects that the diver entered underwater by the water-inflow detection part 2 mentioned above.
The display unit 5 displays time and the like in the non-dive operation mode, and displays information on the current water depth and the buddy position in the operation mode during diving, as will be described in detail later.
The input element unit 6 receives a communication ultrasonic signal from the outside, converts the communication ultrasonic signal into an electric signal, and outputs the electric signal.
The signal input unit 7 performs an interface operation between the input element unit 6 and the processing unit 1 or the distance detection unit 8.
The distance detector 8 detects a distance to another dive computer in accordance with the timing of the input communication ultrasonic signal.

Based on the distance detected by the distance detection unit 8, the gain setting unit 9 calculates a setting gain so as to obtain an optimum reception level in the signal input unit 7, and sets the gain of the signal input unit 7.
The timing generation unit 10 controls the transmission / reception timing of the ultrasonic wave and outputs a timing control signal for measuring the distance to the signal input unit 7, the distance detection unit 8, and the signal output unit 11.
Output to.
When the signal output unit 11 transmits the ultrasonic signal for communication via the output element unit 12 based on the timing control signal input from the timing generation unit 10 under the control of the processing unit 1, the output element unit 12. Interfacing with the.
The output element unit 12 converts the input electrical signal into a communication ultrasonic signal and outputs it to the outside.
When notifying the diver, such as various alarms, the notification unit 13 notifies the diver to that effect by sound or vibration.

FIG. 2 is an external view of the information processing apparatus for divers according to the embodiment.
In the vertical direction of the main body 101 of the dive computer 100, the dive computer is set to 100.
Are provided with belts 102A and 102B.
In addition, a display unit 5 is arranged on the front surface of the main body 101 to display various information.
Further, a plurality of switches 3 </ b> A to 3 </ b> D constituting the operation unit 3 are arranged on the side of the main body 101.
Furthermore, on the front left side of the main body 101, a plurality of electrodes constituting the incoming water detection unit 2 are arranged.
In addition, on the upper side of the main body 101, signal transmission / reception sensors constituting the input element unit 6 and the output element unit 12 for transmitting and receiving ultrasonic signals in a protruding state are arranged.

Here, the display on the display unit 5 will be described.
FIG. 3 is an explanatory diagram of a display screen of the display unit.
The display screen of the display unit 5 is a distance between the current water depth display unit 40 that displays the current water depth, the elapsed time display unit 41 that displays the elapsed time since the start of diving, and the buddy (corresponding dive computer). Warning display unit 42 that displays a warning mark (in this embodiment, a bidirectional arrow) when the distance is more than a predetermined distance, a relative distance display unit 43 that indicates the distance to the buddy (corresponding dive computer), When the water depth difference display section 44 displays the difference between the water depth of the dive computer and the water depth of the buddy (corresponding dive computer), and the dive computer is located at a higher depth than the buddy (corresponding dive computer) That is, the high depth displayed when the water depth of the dive computer is deeper than that of the buddy (corresponding dive computer) When the display unit 45 and the dive computer are at a lower depth than the buddy (corresponding dive computer), that is, when the water depth of the dive computer is shallower than the buddy (corresponding dive computer) The low-depth display unit 46 to be displayed and the ultrasonic signal level for communication are displayed in a plurality of stages (in the embodiment, 10 levels).
And a signal level display unit 47 for displaying in a stage).

Next, the operation of the dive computer 100 of the embodiment will be described.
In the present embodiment, in order to grasp the relative positional relationship between two dive computers, it is assumed that the communication clock timing is synchronized.
First, the synchronization process performed at the start of diving will be described.

FIG. 4 is a flowchart showing a synchronization process at the start of diving.
In the following description, the dive computer 10 to which a diver who is a user is attached.
0 is expressed as a dive computer 100A, and the dive computer 100 on which the buddy of the diver is attached is expressed as a dive computer 100B.
First, each dive computer 100A, 100B sets a distance for how far away from other dive computers to give a warning (step ST11). Specifically, for example,
Set to 10m.
Next, it is set which of the dive computer 100A and the dive computer 100B becomes the master M and starts processing (step ST12). In this case, if one is set as the master M, the other not set performs the slave operation.

Thereafter, the processing unit 1 of each dive computer 100A, 100B determines whether or not the diver has started diving (step ST13).
If the diver has not yet started diving in step ST13 (step ST13; No), the processing unit 1 enters a standby state.
In step ST13, when the diver starts diving (step ST
13; Yes), synchronization processing described later is performed (step ST14).
When the synchronization process is completed, the processing unit 1 controls the display unit 5 to display the distance between the dive computer 100A and the dive computer 100B (step ST15).

Next, the processing unit 1 determines whether or not the synchronization switch is turned on in the operation unit 3 (step ST16).
If it is determined in step S16 that the synchronization switch is turned on (step ST16; Yes), the process returns to step ST14, and the same process is performed thereafter.
If it is determined in step S16 that the synchronization switch is not turned on (step ST16; No), the synchronization process is terminated.
Here, the synchronization processing will be specifically described.

FIG. 5 is a timing chart of the synchronization process.
FIG. 6 is a process flowchart of the synchronization process.
In the following description, it is assumed that the dive computer 100A operates as the master M, and the dive computer 100B operates as the slave S. In FIG. 5, the communication basic clock of the dive computer 100A functioning as the master M is represented as a communication basic clock A1 (1 Hz).
First, when the processing unit 1 of the dive computer 100A functions as the master M, the water depth calculation unit 4 performs water depth measurement (step ST21), and the water depth data S1 corresponding to the measured water depth is based on the communication basic clock A1. At T1, the data is transmitted to the dive computer 100B functioning as the slave S (step ST22).

Thus, when the processing unit 1 of the dive computer 100B receives the water depth data S1 (step ST23), the processing unit 1 generates the communication temporary clock A2 in synchronization with the reception timing of the water depth data S1 (= corresponding to the time T11) and counts it. Is started (step ST24).
Subsequently, the processing unit 1 of the dive computer 100B determines whether or not it is the first count (step ST25).
In the determination at step ST25, when it is the first count (step ST25).
; Yes), the processing unit 1 of the dive computer 100B performs water depth measurement by the water depth calculation unit 4 (step ST26), and acquires water depth data S3 corresponding to the measured water depth.

Subsequently, the processing unit 1 of the dive computer 100B determines whether or not 1 second has elapsed from the start of counting (step ST27).
If it is determined in step ST27 that one second has not yet elapsed (step ST
No), the process again moves to step ST25, and the same process is performed thereafter.
If one second has elapsed in the determination of step ST27 (step ST27; Ye
s) The processing unit 1 of the dive computer 100B functioning as the slave S transmits the water depth data S3 to the dive computer 100A functioning as the master M at time T12 based on the temporary communication clock A2 (step ST28).

Thereby, the processing unit 1 of the dive computer 100A converts the water depth data S3 to the time T2 +.
When received at t6 (step ST29), the count is started (step ST30).
Subsequently, the processing unit 1 of the dive computer 100A determines whether or not it is the first count (step ST31).
In the determination of step ST31, when it is the first count (step ST31
; Yes), the processing unit 1 of the dive computer 100A performs water depth measurement by the water depth calculation unit 4 (step ST32), and acquires water depth data S5 corresponding to the measured water depth.

Subsequently, the processing unit 1 of the dive computer 100A determines whether or not the current time t = T3−t6 / 2 is reached (step ST33).
If it is determined in step ST33 that the current time t = T3-t6 / 2 has not yet been reached (step ST33; No), the process proceeds to step ST31, and the same process is repeated thereafter.
If it is determined in step ST33 that the current time t = T3-t6 / 2 has been reached (step ST33; Yes), the processing unit 1 of the dive computer 100A functions as the master M and uses the water depth data S5 as the slave S. It transmits to the functioning dive computer 100B (step ST34).
Thereby, the processing unit 1 of the dive computer 100B receives the water depth data S5 (
In step ST35), the timing of receiving the water depth data S5 is recognized as the timing corresponding to the current time t = T3 (step ST36).

Therefore, after that, the processing unit 1 of the dive computer 100B functioning as the slave S is
At time T4 + 2 × n seconds, the water depth data is transmitted to the dive computer 100A functioning as the master M, and the dive computer 100A functioning as the master M
Time T5 + 2 x n seconds (where n is a natural number)
At this timing, the water depth data is transmitted to the dive computer 100B functioning as the slave S (step ST37).
Specifically, the processing unit 1 of the dive computer 100B functioning as the slave S transmits the water depth data to the dive computer 100A functioning as the master M at the times T4, T6, T8,. The processing unit 1 of the dive computer 100A transmits the water depth data to the dive computer 100B functioning as the slave S at the times T5, T7, T9,.

FIG. 7 is a processing flowchart of the display operation after synchronization.
FIG. 8 is a timing chart of communication processing during display operation.
In the following, the dive computer 100 is displayed on the display unit 5 of the dive computer 100B.
A case where the position A is displayed will be described as an example.
An ultrasonic signal is input from the input element unit 6 of the dive computer 100B to the signal input unit 7 from the dive computer 100A to which the buddy is attached (step ST41).
Specifically, as shown in FIG. 8, the dive computer 100A that functions as the master M in synchronization with the communication basic clock A1 uses the water depth value calculated by the water depth calculation unit 4 immediately before at time T21. It is transmitted as value data S21.
Thereby, the dive computer 100B functioning as the slave S has the water depth value data S21 at a timing shifted by time t21 (sec) from the time T21 of the communication basic clock A1.
Receive.

Next, the processing unit 1 of the dive computer 100B functioning as the slave S calculates the distance L between the dive computers 100A and 100B from the reception timing (= time shifted from time T21 by time t21 (sec)) (step ST42). ).
Specifically, the distance L is calculated as follows.
If the ultrasonic wave speed in water is about 1530 m / sec, the dive computer 100
The distance L between A and 100B is
L = 1530 (m / sec) × t21 (sec)
Is calculated as

For example, if the time t21 = 7.3 msec, the distance L is 11.17 m, and the display unit 5 rounds off to the second decimal place and displays 11.2 m.
Similarly, when the distance L increases, the reception timing is further delayed from the time T23, which is the synchronization timing, as at time t23.
Similarly, the dive computer 100B functioning as the slave S in synchronization with the communication basic clock A1 transmits the water depth value calculated by the water depth calculation unit 4 immediately before as the water depth value data S22 at time T22, and the master M The dive computer 100A that functions as the receiver receives the water depth value data S22 at a timing shifted by time t22 (sec) from the time T22 of the communication basic clock A1, and the dive computer 100A also calculates the distance from the delay of the received signal. be able to.

Next, the processing unit 1 of the dive computer 100B functioning as the slave S determines whether or not the calculated distance L is greater than or equal to a predetermined distance set to determine whether or not to warn by the operation unit 3. (Step ST43).
If it is determined in step ST43 that the calculated distance L is less than the predetermined value (step ST43; No), the process proceeds to step ST45.
If it is determined in step ST43 that the calculated distance L is equal to or greater than a predetermined value (step ST43; Yes), the processing unit 1 controls the notification unit 13 to issue a warning (step ST44).

Next, the processing unit 1 of the dive computer 100B uses the water depth calculation unit 4 to determine its own water depth value DI.
Is acquired (step ST45).
Subsequently, the processing unit 1 of the dive computer 100B determines the water depth value DO transmitted by the dive computer 100A functioning as the master M as the water depth value data S21 and the own water depth value D.
I is compared (step ST46).
And based on the comparison result, the vertical direction alerting | reporting process which displays a water depth difference (= DO-DI) and a water depth difference direction (low depth direction or high depth direction) on the display part 5 is performed (step ST).
47).

In particular,
0 <DO-DI
In this case, the low depth side display unit 46 is turned on, the high depth side display unit 45 is turned off, and the water depth difference (
= DO-DI; for example, +3 m) is displayed on the water depth difference display unit 44.
Also,
0 = DO-DI
In this case, the high depth side display unit 45 and the low depth side display unit 46 are turned off, and the water depth difference (= D
O-DI) is displayed on the water depth difference display unit 44.

Also,
0> DO-DI
In this case, the high depth side display unit 45 is turned on, the low depth side display unit 46 is turned off, and the water depth difference (
= DO-DI; for example, −5 m) is displayed on the water depth difference display unit 44.
After displaying on the display unit 5, the processing unit 1 of the dive computer 100B sets a gain to be fed back to the signal input unit 7 based on the distance calculated in step ST42 (step ST48).

Here, the gain setting will be described.
The ultrasonic signal used for communication in the present embodiment attenuates the signal level when transmitted through water and has directivity for reception.
Therefore, in this embodiment, in order to search the direction in which the dive computer 100A to which the buddy is attached exists, the dive computer is changed so that the diver who is the user changes the direction of the input element unit 6 of the dive computer 100B. While moving 100B, the direction in which the ultrasonic signal level for communication displayed on the signal level display unit 47 of the display unit 5 is maximized is searched.

More specifically, assuming that the signal strength when the output element portion 12 of the dive computer 100A and the input element portion 6 of the dive computer 100B are opposed to each other at a close distance is 100%,
A diver who is a user moves the dive computer 100B, and the dive computer 1
When the output element unit 12 of 00A and the input element unit 6 of the dive computer 100B face in opposite directions, the signal strength at the same close distance becomes 1 / 10th.

Similarly, assuming that the signal strength when the output element portion 12 of the dive computer 100A and the input element portion 6 of the dive computer 100B face each other when the distance is a certain distance is 50%, the opposite direction is obtained at the same distance. Is similarly 1/10, and the signal strength is 5.
Therefore, if 100% signal strength at the time of proximity is turned on in the signal level display unit 47 of the display unit 5, that is, 10 lights are turned on, the number of lightings when the light is directed in the opposite direction at the time of proximity is 1. Thus, the direction in which the dive computer 100A exists can be clearly distinguished by 10 to 1.

By the way, if it is applied to the condition when the distance is a certain distance as described above, the number of lighting in the signal level display unit 47 when facing the dive computer 100A is 5, and the number of lighting is 1 in the opposite direction. In the signal level display unit 47, although the maximum number of possible lightings is 10, only 5 lights up, so that the reliability when determining the direction is lowered.
When the distance further increases, for example, the output element unit 1 of the dive computer 100A
2 and the input element section 6 of the dive computer 100B face each other when the signal strength is 10% and the signal strength when facing the opposite is 1%. The number becomes one, and it becomes impossible to determine which direction the dive computer 100A to which the buddy is attached is.

For this reason, in this embodiment, the gain is set as a coefficient corresponding to the distance L based on the distance L calculated in step ST42.
Specifically, when the display signal strength when displaying on the signal level display unit 47 is LV, the actual input signal strength is Sg, and the gain corresponding to the distance L is α,
LV = α × Sg
And so on.
Then, the processing unit 1 of the dive computer 100B performs display on the signal level display unit 47 of the display unit 5 based on the obtained display signal strength LV (step ST49).

Specifically, in the case shown in FIG. 3, the diver who is the user of the dive computer 100 </ b> B determines that the dive computer 100 </ b> A wearing the buddy has a radius of 11.2 m from the display of the relative distance display unit 43. From the position and the display of the water depth difference display unit 44 and the lighting display of the low depth side display unit 46, it can be seen that it exists at the high depth side 5m. Further, it can be seen that the warning is given when the distance from the warning display unit 42 to the dive computer 100A corresponding to the buddy is a predetermined distance (for example, 10 m) or more.
Furthermore, ten signal level display sections 47 are lit, and it can be seen that the dive computer 100A exists in the direction of the current input element section 6.

FIG. 9 is an explanatory diagram of another display example of the location of the dive computer on which the buddy is attached.
In the same situation as the display shown in FIG. 3, for example, a display unit 5 that can display a dot matrix is used, and the position of the diver equipped with the dive computer 100B is denoted by reference numeral 5.
This is a case of 0, and a figure when the diver is seen from the side is displayed at the upper part of the screen. According to this, it can be seen that the dive computer 100A to which the buddy is attached is in a spherical range with a radius of 11.2 m.
Furthermore, the figure when the diver is viewed from above is displayed at the bottom of the screen.
In this case, since the dive computer 100A is on the high depth side with a water depth difference of 5 m, it can be understood that the dive computer 100A is on the circumference of the circle 51 having the angle Φ with respect to the horizontal plane.

According to this embodiment, the following effects can be obtained.
In diving, the field of view is narrowed by wearing a mask, etc., and it is difficult to always put the buddy in view due to lack of freedom, etc., but it is always the distance to the buddy, i.e. the dive computer that the buddy is wearing (L) can be grasped, and the safety level of the diver can be improved. In particular, when the transparency in water is low, it becomes impossible to recognize a human figure just a few meters away, making it difficult to communicate and increasing anxiety.
In addition, when a distance from the buddy is exceeded, a warning is issued and actions can be taken to confirm each other's position, which greatly increases safety.

In addition to displaying the distance to the buddy, by displaying the water depth difference and the vertical position relationship (low depth side or high depth side) with respect to the self position, the buddy can be detected more quickly than exploring from a spherical area. You can explore the direction you are. By knowing the location of the buddy, you can not only know when a dangerous event has occurred, but also when one of you finds a fish, you can notify the location early, improving the safety and enjoyment of diving as a whole. It becomes possible to make it.

In the above description, the configuration of displaying the water depth difference, direction, and distance to other dive computers has been adopted, but even if only the water depth difference or only the water depth difference and direction are displayed, the position of the buddy is displayed. Can be easily notified to divers, and the positional relationship between buddies can be easily grasped.
In the above description, the display signal strength is calculated by multiplying the signal strength by the gain α corresponding to the distance L. However, the output signal from the signal output unit 11 is amplified in advance according to the distance L. It is also possible to transmit at the signal strength.
In the above description, in step ST44, the warning distance is configured to be set by the operation unit 3 or the like. However, a photo sensor or the like is mounted and automatically determined from underwater transparency. Also good.

In the above description, the case of another dive computer as an external device has been described. However, a fixed external device is provided on a rocky place, etc., or an external device is provided on a diving ship, and the relative positional relationship between these is set in the dive computer. It can also be configured to notify.
Furthermore, identification data that can identify each device may be included in the water depth data so that a plurality of external devices can be identified.

In the above description, it is assumed that the control program is stored in the ROM in advance. However, the present invention is not limited thereto, and the dive computer is connected to a personal computer or a server computer (not shown) via a communication cable or a network. The control program may be downloaded from this personal computer or server computer. In this case, the control program may be stored in a rewritable nonvolatile memory in the dive computer. And the process part 1 should just read a control program from this non-volatile memory, and may perform this.

It is a general | schematic block diagram of the information processing apparatus for divers of embodiment. It is an external view of the information processing apparatus for divers of an embodiment. It is explanatory drawing of the display screen of a display part. It is a flowchart which shows the synchronous process at the time of a diving start. It is a timing chart of a synchronous process. It is a processing flowchart of a synchronous process. It is a processing flowchart of the display operation after synchronization. It is a timing chart of the communication processing at the time of a display operation. It is explanatory drawing of the other example of a display of the dive computer with which the buddy is mounted | worn.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Dive computer, 100A ... Dive computer, 100B ... Dive computer, 101 ... Main body, 102A, 102B ... Belt, 1 ... Processing part, 2 ... Water entry detection part,
DESCRIPTION OF SYMBOLS 3 ... Operation part, 3A ... Switch, 4 ... Water depth calculation part, 5 ... Display part, 6 ... Input element part, 7 ... Signal input part, 8 ... Distance detection part, 9 ... Gain setting part, 10 ... Timing generation part, DESCRIPTION OF SYMBOLS 11 ... Signal output part, 12 ... Output element part, 13 ... Notification part, 40 ... Current water depth display part, 41 ... Elapsed time display part,
42 ... warning display unit, 43 ... relative distance display unit, 44 ... water depth difference display unit, 45 ... high depth side display unit, 46 ... low depth side display unit, 47 ... signal level display unit, A1 ... basic clock for communication, A2 ...
Temporary clock for communication, DI ... water depth value, DO ... water depth value, L ... distance, M ... master, S ... slave.

Claims (4)

A water depth detector for detecting the water depth of the device itself;
A signal receiver for receiving water depth data corresponding to the water depth in which the external device exists ;
Wherein based on the depth of water depth and the external device of the apparatus, the water depth difference calculating unit that calculates a water depth difference between the own apparatus and the external device,
An inter-apparatus distance calculation unit that calculates an inter-apparatus distance between the own apparatus and the external apparatus based on a deviation between a reception timing of the signal receiving unit and a timing at which the external apparatus transmits water depth data;
A gain setting unit that sets a gain of the signal receiving unit according to the distance between the devices, and sets a display signal strength based on the gain;
A notifying unit for notifying at least one of the water level difference, the inter-device distance, and the signal level corresponding to the display signal strength;
An information processing apparatus for divers, comprising: The information processing apparatus for divers according to claim 1,
  Having a warning unit for giving a warning when the distance between the devices is equal to or greater than a predetermined distance;
  An information processing apparatus for divers characterized by the above. In the information processing apparatus for divers according to claim 1 or 2,
  A transparency detector for detecting the transparency in the water;
  A warning unit for setting a predetermined distance as a reference for warning according to the transparency in the water, and for warning when the distance between the devices is equal to or greater than the predetermined distance;
  An information processing apparatus for divers, comprising: In the information processing apparatus for divers of Claims 1-3,
A notification unit for notifying a water depth difference direction representing a relative positional relationship between the own device and the external device based on the water depth difference;
An information processing apparatus for divers characterized by the above .

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