JPH06115485A - Caisson monitor device - Google Patents

Abstract

PURPOSE:To enable a shift to be safely carried out by monitoring the attitude of a caisson under shifting at all times, and thereby constituting the device to quickly provide warning visually and audibly when the attitude of the caisson is found to have been abnormal beyond a condition which is inputted into a monitor section in advance. CONSTITUTION:An ultra sonic wave water gauge 4 is installed onto the rear end of a horizontal stem 3C in such a way that it acts downward, and a data transmitting section 5 is also installed onto the upper end of a pillar 3B in such a way that it acts forward. Before a shift is started, the dimensions of a caisson a warning condition, a reference water level and the like are inputted as initial set values into a processing unit 10. While the shift is carried out, the A/D conversion of measured data from the ultra sonic wave water gauge 4 and an inclination detecting section 6 is made, and the resultant is transmitted by wireless to a data receiving section 9 by a data transmitting section 5. Measured data thus transmitted is compared with data on the dimensions of the caisson, the warning condition, the reference water level and the like which are inputted as the initial set values by the processing means 10, so as to be operated, so that attitude information such as freeboard, the inclination and the like is thereby displayed over a screen 10A attached to the processing means 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caisson monitoring device when a caisson for harbor construction is in transit.

[0002]

2. Description of the Related Art Heretofore, in this type, the following has been done. There is a risk that the caisson will be submerged when the caisson rounds, and there will be a danger to the tugboat due to submersion of the caisson. In order to prevent this, we continue to monitor all the time,
If it seems to be dangerous, safety measures such as adjusting the towing speed or cutting the tow rope must be taken.

[0003] Conventionally, attitude monitoring during caisson cruise is performed only by visual observation, relying on the experience and intuition of the tug crew. For this reason, the mental fatigue of the crew members is great, and there are problems such as misidentification. In addition, it is a very dangerous work because visual monitoring is almost difficult during heavy fog, waves and at night.

[0004]

The problems described in the prior art have the following problems. Since we rely only on visual observation of the caisson posture, it is difficult to accurately grasp the caisson posture when there is a thick fog or waves.
Especially in the case of round trips at night, posture monitoring is almost difficult, and mental fatigue of crew members is severe, which is a very dangerous task. The present application has been made in view of such problems of the conventional technology, and an object of the present application is to provide a device capable of solving the above problems.

[0005]

In order to achieve the above-mentioned object, the present invention is as follows. By receiving and displaying the signal transmitted wirelessly from the sensor installed on the caisson on the monitor installed on the tug, the caisson attitude (inclination, freeboard, etc.) during cruise can be constantly monitored and at the same time When an abnormal state exceeds a condition input in advance to the processing device of the monitor unit, a visual and audible alarm is promptly issued to prompt the crew of the tugboat to take safety measures.

That is, it consists of a sensor section installed on the caisson and a monitor section installed inside the tugboat. Data such as caisson dimensions, alarm conditions, reference water level, etc., which are input in advance before the cruise, and the caisson attitude during the cruise. The signal from the sensor unit is calculated and displayed on the monitor screen at all times, and an alarm is issued when the caisson posture exceeds a pre-input alarm condition. This allows
It is possible to accurately grasp the caisson posture even in dense fog, waves, and at night, and at the same time, if there is an abnormality in the caisson posture, an alarm etc. is issued, so safety measures can be taken in advance and safe cruising is possible.

[0007]

EXAMPLES Examples will be described with reference to the drawings. 1
Is the caisson monitoring device of the present invention. Therefore, the configuration is composed of an ultrasonic water level gauge 4, which is installed on a well-known caisson 2 via a support column 3, a data transmission unit 5, and an inclination angle detection unit 6 and a power supply unit 7 which are installed on the upper surface of the caisson. A sensor unit (a), a monitor unit (b) including a data receiving unit (9) installed on the tugboat (8), a processing unit (10) and an alarm output unit (11) are mounted. In the figure, 6A is a tilt angle detector, 6B and 6C are CD-CD converters, and 6D is a measurement signal converter.

In this case, the mounting column 3 has a mounting metal member 3A fixed to a corner portion of the upper surface of the caisson 2, a pillar 3B standing on the mounting metal member, and a horizontal rod continuous from the upper end of the pillar toward the rear. 3C and. 3D is a reinforcement reinforcement. An ultrasonic water level gauge 4 is attached to the rear end of the horizontal rod 3C so as to act downward, and a data transmitter 5 is attached to the upper end of the column 3B so as to act forward. Then, before the round trip, the processing device 10 inputs the caisson size, the alarm condition, the reference water surface, etc. as initial setting values.

During traveling, the ultrasonic water level gauge 4 and the tilt angle detector 6
A / D conversion is performed on the measured data from and the data is wirelessly transmitted to the data receiving unit 9 by the data transmitting unit 5. The transmitted measurement data is compared and calculated with data such as caisson dimensions, alarm conditions, reference water surface, etc., which have been input in advance as initial setting values by the processing device 10, and attitude information such as caisson freeboard and inclination angle is processed by the processing device. It is displayed on the screen 10A attached to 10. In this case, the display is a switching method and is a trend screen of caisson posture change and a pseudo three-dimensional graphic screen.

When the caisson posture remains within a preset alarm condition range for a certain time or more, the measurement data for 5 minutes before and after that is automatically saved, and the alarm output device 1
1 gives a visual and audible alarm. It is also possible to save the measurement data by key operation.

The operation will be described together with the effects.

[0012]

Since the present invention is configured as described above, it has the following effects. 1. Because it is possible to accurately monitor the caisson posture while cruising in real time, even in dense fog, waves, and at night,
The mental fatigue of the tug crew can be reduced. 2. If the caisson posture becomes abnormal, a warning is issued and quick safety measures can be taken, improving the safety during rounding. 3. Since measurement data can be saved, it is possible to store data for analyzing caisson behavior during rounding. This improves the reliability of the alarm condition value that is initially set and input before the round trip.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a caisson monitoring device.

FIG. 2 is an enlarged perspective view of a main part in FIG.

FIG. 3 is an enlarged perspective view of a main part in FIG.

FIG. 4 is a conceptual diagram illustrating an operation.

FIG. 5 is an enlarged front view showing a display state in the processing device.

FIG. 6 is a front view of a tilt angle detection unit.

FIG. 7 is a front view of a power supply unit.

FIG. 8 is a front view of a data transmitter and a data receiver.

FIG. 9 is a front view centering on a mounting column.

FIG. 10 is a plan view of the above.

FIG. 11 is a left side view of the above.

FIG. 12 is a system configuration diagram.

[Explanation of symbols]

 1 Caisson monitoring device 2 Caisson sensor unit 3 Mounting column 4 Ultrasonic water level gauge 5 Data transmitter 6 Tilt angle detector 7 Power supply unit Lo monitor unit 8 Towing boat 9 Data receiving unit 10 Processing device 11 Alarm output device

Claims (1)

[Claims] 1. The caisson attitude is constantly monitored while the caisson attitude during cruise is constantly monitored by receiving and displaying a signal wirelessly transmitted from a sensor section mounted on the caisson on a monitor section mounted on a tugboat. A caisson monitoring device, which is configured to promptly issue a visible and audible alarm when an abnormal state exceeding a condition input to a processing unit of a monitor unit is reached.