JPH05124580A - Diving recorder for scuba user - Google Patents

Abstract

PURPOSE:To provide a diving recorder that is of benefit to improve diving technique through recording of the submarine activities, environment, and the momentum of a diver using a scuba, for further learning and review, and to know the cause of accident. CONSTITUTION:The air pressure of a cylinder 1, the depth of diving, water temperature, and the respiration of a diver, are detected by sensors 12, 13, 14, 15, respectively, and are processed and recorded by a microcomputer 11 of pressure proof watertight structure, that can be brought into the water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for recording underwater actions and conditions of a diver wearing a scuba.

[0002]

2. Description of the Related Art A self-contained air-operated device that allows free movement in water by decompressing and breathing high-pressure air in a cylinder is widely known by the name of scuba, and a cylinder filled with high-pressure air is generally used. It has a structure in which a primary decompressor is attached and a secondary decompressor is connected to the tip of an intermediate-pressure hose extending from the primary decompressor, and a diver breathes by biting a mouthpiece integrated with the secondary decompressor.

That is, since a cylinder is carried and the air therein is consumed to survive in water, it is one of the most basic things for safety to know the remaining amount of air accurately. It is also important for safety to know the position and situation in the water properly, and for that reason, it is necessary to carry a pressure gauge (residual pressure gauge), a water depth gauge, a compass, a water temperature gauge, and a clock on the scuba. I am trying to do it. That is, it is possible to know the remaining dive time, the current position and environment, the direction of travel, the behavior from the start of diving to the present, especially the amount of exercise, and to plan future actions with these instruments.

On the other hand, looking at a diving person using such a scuba, he or she can learn to use the knowledge and techniques necessary for diving, and can be freely used after diving after reaching a certain level. However, due to overconfidence in their proficiency level, experience and basic swimming ability, they may dive beyond their ability, which may endanger their lives or cause personal injury. There is.

Therefore, if the behavior, environment, and exercise amount from the start to the end of diving can be investigated, it can be used for learning and reflection materials to improve diving techniques. I didn't have any means of keeping track of this just knowing. Recently, a device for measuring the depth and time and displaying the dangerous time for diving disease has been provided, but this only displays the data at the present time and It does not record the situation over time. In addition, some scuba equipped with the function of recording dive data is provided, but this only records the maximum value such as the maximum dive depth in one dive, and it can be used from the start to the end of the dive. It does not record changes in diving depth.

Next, as a matter to be noted during diving, it is necessary not only to grasp the situation by constantly watching the instruments but also to continue slow deep breathing with a constant rhythm. This is because the partial pressure of carbon dioxide in the alveoli is kept at a normal value to prevent the occurrence of poisoning symptoms due to an increase in the concentration of carbon dioxide in blood.

However, in practice, the person other than the skilled person has a respiratory rhythm due to the fact that the primary decompressor and the secondary decompressor have respiratory resistance, that they are excited due to a special environment, and that they exercise violently. It is easy to disturb the air flow, and the required air amount may exceed the supply capacity of the scuba, causing suffocation. That is, the breathing rate changes depending on the breathing resistance of the scuba itself and the mental and physical condition of the diver himself.
Therefore, if it is possible to study the change of respiratory condition during diving, it can be used as one of the materials for learning, reflection, and further investigation of the cause of the accident, but the scuba does not have a means for measuring and recording the respiratory rate.

[0008]

The problem to be solved by the present invention is that in the conventional scuba, the air consumption amount from the start to the end of diving, even if the situation at the present time can be known,
There is no means to record the state and changes of the environment and the state of behavior, and therefore it is not possible to carry out appropriate learning and reflection based on the diving record of the person to promote technological improvement, or an accident occurred. Sometimes it is difficult to determine the exact cause.

[0009]

In order to solve the above problems, the present invention provides a sensor which detects an air pressure of a cylinder, a diving depth, a water temperature, and a breathing of a diver, and which outputs an electric signal. It is configured to include a microcomputer having a pressure-resistant and watertight structure that can be carried in water and that processes the electric signals to be stored and stores them separately. By using such a means, it is possible to record how the environment and behavior of the diver changed from the start to the end of the dive by carrying it underwater, and use the person's own materials to promote technological improvement. The object of providing a diving recording device for a scuba user that can be useful or useful for investigating the cause of an accident is achieved.

[0010]

The air pressure of the cylinder from the start to the end of the dive, the changes in the dive depth and the water temperature, and the respiratory rate mainly based on the exercise amount of the diving person are detected by the respective sensors, processed by the microcomputer, and stored over time. By reading the data stored after landing, the depth and water temperature, that is, environmental conditions and changes, and behaviors can be reproduced numerically, so whether you dive to a dangerous depth or stayed in cold water for a long time. , Check whether you exercised excessively or levitated with sufficient margin, and learn and reflect.

[0011]

Embodiments of the present invention will now be described with reference to the drawings.
In FIG. 1 schematically showing an example of the scuba, the pressure air filled in the cylinder 1 is reduced to a pressure of 8 to 10 kg / cm 2 by the primary pressure reducer 2 attached to the cylinder 1, and the medium pressure is applied. After passing through the hose 3, the secondary decompressor 4 decompresses the water pressure to the same level as the water pressure, and the mouthpiece 5 integrated with the secondary decompressor 4 supplies it to the diver.
A console 9 incorporating a pressure gauge (residual pressure gauge) 6, a water depth gauge 7, and a water temperature gauge 8 of the cylinder 1 is connected to the primary decompressor 2 by a high-pressure hose 10 in a suspended state, and the microcomputer 11 further decompresses the primary pressure. It is removably attached to the container 2.

The first pressure sensor 12 for detecting the air pressure of the cylinder 1 is built in the high pressure chamber of the primary decompressor 2, and the second pressure sensor 13 for detecting the water depth and the temperature sensor 14 for detecting the water temperature are microcomputers. A third pressure sensor 15, which is attached to the outside of 11 and detects the breathing of the diver, is built in the middle pressure chamber of the primary decompressor 2.

Each pressure sensor 12, 13, 15 is a positive displacement type,
A known one such as a semiconductor piezoresistive type can be used, but the third pressure sensor 15 preferably has a higher response speed than accuracy. Further, as the temperature sensor 14, a known one such as a winding resistance type, a semiconductor diode or a metal core type can be used. However, the first pressure sensor 1
2. The configuration in which the second pressure sensor 13 and the temperature sensor 14 are also used as the detection portions of the pressure gauge 6, the water depth gauge 7, and the water temperature gauge 8 of the console 10, or the positions of these pointers are detected by an electrical resistance value or the like. May be replaced with

As shown in FIG. 3, the primary pressure reducer 2 has a high pressure chamber 21 on the cylinder 1 side, a medium pressure chamber 22 on the medium pressure hose 3 side, a piston type valve element 23, a valve seat 24 and a spring 25. Therefore, when intake is started and the pressure in the intermediate pressure chamber 22 drops, the valve element 23 moves toward the intermediate pressure chamber 23 by the force of the spring 25, and the high pressure chamber 2
The air is allowed to flow by opening the valve passage 26 away from the valve seat 24 of No. 1 and the high pressure air is collected in the intermediate pressure chamber 22 and the intermediate pressure hose 3 when the intake is finished and the valve body 23 is moved to the valve seat 24.
And the valve passage 26 is closed. That is, the pressure in the intermediate pressure chamber 22 is reduced during inspiration and is high except for that, and the pressure changes in synchronization with breathing.

When the pressure in the intermediate pressure chamber 22 changes as shown in FIG. 4 with the breathing of the diving person, the third pressure sensor 15 has a high value at the time of inspiration and a low value at the time of exhalation in accordance with this pressure change. A continuous electric signal with a pulse waveform is generated.
When this pressure change is sampled and stored at fixed time intervals shorter than the maximum breathing rate that is usually considered, or when the sample value of each time is compared with the previous sample value and the difference is larger than a certain value The respiratory rate per unit time is determined and stored as it is judged that the exhaled air has been inhaled or the inhaled air has been exhaled.

By similarly sampling and storing the air pressure, diving depth, and water temperature of the cylinder 1 at fixed time intervals, the diving person's environment and behavior from the start to the end of diving can be recorded numerically. it can.

FIG. 2 is a block diagram showing an example of processing the electric signals from the sensors 12, 13, 14, and 15. The electric signal input to the microcomputer 11 is amplified by an amplifier 31 and A / D converted. The digital signal is converted into a digital signal by the device 32, and the digital signal and the signal from the clock 33 are taken into the central processing unit 34 and processed based on the program stored in the read-only memory 35 and recorded in the reading / writing memory 36. To be done.

At the end of the dive, the photocoupler 43 provided at the terminal of the interface unit 42 connected to the personal computer 41 faces the photocoupler 37 provided at the input / output end of the microcomputer 11 so that In response to the read command, the data recorded in the reading / writing memory 36 is read and recorded in the personal computer 41 and displayed on the display, or recorded and stored in an external recording device such as the floppy disk 44. A signal between the two computers 11 and 41 is light between the photocouplers 37 and 43, and a read command and data can be transmitted without impairing the watertightness of the microcomputer 11.

According to the present embodiment, the scuba owner individually possesses the microcomputer 11 and the dive history of each individual is recorded and stored in the floppy disk 44 in time series, or one piece of data of a plurality of persons who dive at the same time is recorded. It is possible to record and save the data on the floppy disk 44, and to learn and reflect, and to know the degree of improvement of diving technique. In addition, the microcomputer 1 carried by the diver
Since various data are stored in 1, it is useful for investigating the cause of an accident should it occur.

[0020]

According to the present invention, the behavior, environment, and exercise amount from the start to the end of diving, and thus the load condition of the diving person, can be detected by sensors such as the air pressure of the cylinder, the diving depth, the water temperature, and the breathing of the diving person. Since it is memorized by processing with a watertight microcomputer, it is possible to numerically display all the details in the water. Therefore, appropriate learning and reflection can be carried out to promote technological improvement or accidents. It can be useful for investigating the cause.

[Brief description of drawings]

FIG. 1 is a schematic layout diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram of an example of processing an electrical signal.

FIG. 3 is a cross-sectional view of a primary scuba decompressor.

FIG. 4 is a diagram showing changes in pressure due to breathing.

[Explanation of symbols]

 1 cylinder 2 primary decompressor 3 medium pressure hose 5 mouthpiece 11 microcomputer 12 pressure sensor 13 pressure sensor 14 temperature sensor 15 pressure sensor

Claims (2)

[Claims] 1. A sensor for detecting an air pressure of a cylinder, a diving depth, a water temperature, and a breathing of a diver, and outputting an electric signal, and a sensor for processing the electric signal sent from each sensor and storing it separately in water. A scuba user's dive recording device comprising a microcomputer having a pressure-resistant and water-tight structure capable. 2. The scuba user's dive recording device according to claim 1, wherein the means for connecting the microcomputer to an external device for reading the stored data to the outside is an optical communication connection device.