JPS6229231A - Water-surface data transmission processing method and water-surface data collection equipment - Google Patents

Abstract

PURPOSE:To attain man-hour saving by converting a data collected by a water- surface data collecting means into an optical signal, sending it, converting the optical signal received by an on-land photodetection means into a digital data for processing so as to collect, transmit and process automatically the data such as a tide level. CONSTITUTION:A tide level detected based on the vertical movement of a float 14 of a tide level detector 1 is converted into an optical signal via an A/D converter 15 and an interface circuit 16, sent externally via anm optical fiber 17 and a telescope 18 and fed to an indoor data processing unit 24 via a telescope 22 and an optical fiber 23. An interface circuit 25 converts inversely the applied optical signal into an original tide level data D1 and gives it to a CPU 26. The CPU 26 stores the data D1 in the internal memory and gives it to a CRT display device 27 for display. Every time a prescribed time elapses, an astronomical tide level data stored in advance in a floppy disc device 29 and the tide level data D1 in the memory give a correction data, the calculated correction data is displayed on the CRT display device 27 and stored in the floppy disc 29.

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention is used to transmit various data collected on the water, such as tide level data, water temperature data, water turbidity data, etc. to land for processing. The present invention relates to a waterborne data transmission processing method suitable for waterborne data transmission and processing, and a waterborne data collection device directly used for carrying out the method.

``Prior Art'' In on-water construction, for example, sea reclamation work, a plurality of work boats are placed at predetermined positions on the sea, and each work boat performs sand drain work, temporary pouring work, etc. By the way, all of these works to be carried out on each work boat are based on the seawater surface position, so each work boat always has to check the seawater surface position,
In other words, it is necessary to accurately grasp the tide level.

Regarding seawater tide levels, it is common to use tide level information announced at tide gauge stations. However, this tidal level information does not accurately indicate the actual tidal level at each site, and therefore, in reclamation work, etc., it is necessary to separately measure the tidal level at the site.

``This is the problem that the invention aims to solve.'' Conventionally, lifeguards were stationed at all times to measure the tide level. However, because there are waves and swells at sea, human monitoring is inaccurate. become, again,
It is extremely undesirable from the viewpoint of labor saving to always have a guard present.

This invention was made in view of the above-mentioned circumstances, and its purpose is to be able to automatically collect data such as tide levels on the water without manual intervention, and to process the collected data on land. It is an object of the present invention to provide a waterborne data transmission processing method that can be automatically transmitted to a device, and a waterborne data collection device that can be used directly to implement the method.

"Means for Solving the Problem" The method according to the present invention converts data collected by a data collection means provided on the water into an optical signal and transmits it, and the optical signal is transmitted by an optical reception means provided on land. It is characterized by receiving the optical signal, converting the received optical signal into digital data, and processing it. Further, the device according to the present invention includes a gantry vertically installed on the bottom of the water, a data collecting means installed on the gantry, and a data transmitting means for converting the data collected by the data collecting means into an optical signal and transmitting the optical signal. and a solar cell that supplies power to the data transmitting means.

"Operation" The method described above makes it possible to collect data at sea without requiring human intervention, and to transmit the collected data to a data processing device on land.

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a tide level measurement system that is an embodiment of the present invention. hand belt type computer 3 (4th
, see figure). In the tide gauging device 1, the reference numeral 5 is a gantry made of, for example, H-shaped steel;
It is installed vertically on the seabed at a predetermined position on the sea, and its upper part is located above the water surface 6. A circular pipe 7 is attached to the side of this gantry 5 perpendicularly to the water surface 6. This circular tube 7
A slit is cut around the periphery, and the lower end thereof is located below the water surface 6.

Additionally, on the top surface of the gantry 5, a tide gauge 8. Telescope9. A solar cell lO is provided. The tide gauge 8 is a known device, and includes a main body II, a disk 12 attached to the tip of a rotating shaft protruding from the main body II, a wire 13 wound around the disk 12, and a wire 13 wound around the disk 12. It consists of a float 14 attached to the end. and,
A float 14 is placed above the water surface 6 in the circular pipe 7, and the tide level (water level on the water surface 6) is detected based on the vertical movement of the float 14.

FIG. 2 is a block diagram showing the electrical configuration of the tide gauging device 1 described above, and the tide level detected based on the vertical movement of the float 14 is detected by the A/D (analog/digital) converter 15
is converted into digital tide level data DI and supplied to the interface circuit 16. The interface circuit 16 has an infrared laser device inside, converts the tide level data Di into an optical signal, and transmits the signal to the optical fiber 17 approximately every 0.3 seconds.
Output to. The output optical signal is supplied to the telescope 18 via the optical fiber 17, and is transmitted from the telescope 18 to the outside. The solar cell io supplies DC power to the above-mentioned interface circuit 16 and A/D converter 15, and the battery 19 supplies power to the interface circuit 16 etc. when the output voltage of the solar cell 10 is not sufficient. This is an auxiliary power source.

Next, the data processing device 2 shown in FIG. 1 will be explained. In the figure, 21 is an elevated platform built on the ground, and a telescope 22 is installed on top of this elevated platform. In this case, the telescope 22 is installed so that its front axis substantially coincides with the optical axis of the telescope 9. The optical signal transmitted from the telescope 9 is received by the telescope 22 and supplied to the indoor processing device 24 via the optical fiber 23. As shown in FIG. 3, the processing device 24 includes an interface circuit 25, a CPU (central processing unit) 26,
It is composed of a CRT display device 27, a printer 28, a floppy disk device 29, and a recorder 30.

The interface circuit 25 converts the optical signal supplied via the optical fiber 23 into tide level data D1 and outputs it to the CPU 26. The CPU 26 uses tide level data D
I is stored in the internal memory, and the CRT display device 2
Go to 7 and display it. In addition, every time a certain period of time elapses, the tide level information announced by the tide gauge station (hereinafter referred to as astronomical tide level data) stored in the floppy disk device 29 in advance is read out, and this read data and the tide level data in the memory are read out. Correction data is calculated from the DI, and the calculated correction data is displayed on the CRT display device 27 and stored in the floppy disk device 29. here,
The correction data is data for converting astronomical tide level data into tide level data DI indicating the actual tide level. Zarani CP
U26 periodically analyzes past data and successively improves the accuracy of the correction data. Note that the printer 28 is used to print out various data, and the recorder 30 is a type that records actual data sequentially.

Next, the computer 3 shown in FIG. 1 is composed of a CPU 33, a numeric display 34, a cassette tape device 35, a keyboard 36, and a buzzer 37. In this case, the astronomical tide level data described above is stored in advance on the cassette tape in the cassette tape device 35. Then, each morning before starting work, the staff member asks the staff at the data processing device 2 about the above-mentioned correction data. This can be heard, for example, during the morning assembly or by radio telephone. Then,
The correction data is input from the keyboard 36.

Thereafter, the CPU 33 generates tide level data Dl indicating the actual tide level from the astronomical tide level data stored in the cassette tape device 35 and the above-mentioned correction data every time a certain period of time elapses.
The calculation result is displayed on the numeric display 3 along with the current time.
Display it on 4. At the same time, the time of the next high tide and the tide level at that time, and the time of the next low tide and the tide level at that time are calculated and displayed on the numerical display 34.

FIG. 5 shows the display state of the numeric display 34.

By the way, if the correction data is input in the morning, it can be the same data throughout the day. But the weather.

In cases such as when the atmospheric pressure suddenly changes, the correction data may change significantly. In such a case, the person in charge of the data processing device 2 notifies the person in charge of the computer 3 of the change in the correction data via wireless telephone. The person in charge of the computer 3 re-enters the corrected data into the computer 3.

The buzzer 37 sounds when the difference between the actual tide level and the 5EALEVEI tide level is greater than a certain value.

The above is the basic operation of the computer 3 shown in FIG. In addition, in order to improve response in the field, amplitude correction,
Phase correction and meteorological correction may be performed together.

In this case, correction is performed using the following equation.

11t=α IItor(εL−β)+γHt: Estimated tide level α at the site; [I[. Amplitude correction f(εL-β): Phase correction γ for 111o Weather correction Here, α and β can be determined by performing calibration on site for about one month. γ is a value to be corrected according to atmospheric pressure fluctuations, and for example, the atmospheric pressure is keyed in once a day.

Note that a barometer may be built into the device to automatically correct the pressure.

Next, let me explain the points of the tide level measurement nostem according to the 17th embodiment described above.

(1) The interface circuit 16 shown in FIG. 2 has the power to transmit an optical signal over a distance of about 3 km in clear weather. On the other hand, the distance between the tide gauge device 1 and the data processing device d2 is approximately 400 m at most. Therefore, the bipedal system allows sufficient data transmission even in stormy weather or dense fog.

(2) The tide level is automatically detected by the tide gauging device I,
Since this detection result is automatically transmitted to the data processing device 2, no human effort is required for tide level detection, resulting in an extremely large labor-saving effect. Further, the real and @ positions can be accurately and quickly transmitted to the data processing device 2.

(3) If data transmission between the tide gauge device 1 and the data processing device 2 is carried out using radio waves, interference with radio waves emitted by other fishing boats, etc. is likely to occur, and due to restrictions under the Radio Law. It cannot transmit strong radio waves and is not desirable. On the other hand, when laying submarine cables, there is a risk that the cables may be pulled by tidal currents or caught in fishing boat nets, and the cost of laying them is also high. On the other hand, according to the above system,
Since data transmission is performed using light, each of the above-mentioned problems can be solved.

(4) Since the tide gauging device 1 is operated by solar cells IO, it does not require a generator, and therefore,
No maintenance personnel are required for the generator.

(5) During sand compaction work, sand drain work, or mixed treatment work in deep ground improvement, each work boat can detect the tide level with high precision, so each work boat can ” almost never occurs, and there is “unevenness” in the length of the shaft and the height of the top.
No “waste” occurs.

(6) In each work boat, I-1 type steel and steel sheet piles are placed based on the water surface, but according to the above system,
It is possible to accurately know the water surface level on each workboat at all times.

(7) In areas such as bays where the water depth is shallow, ships can be prevented from running aground by installing a computer 3 on a patrol boat to constantly monitor the water depth and check for stuttering of ships entering and exiting.

(8) It is also possible to perform weather correction in the computer 3 of each work vessel.

Although the above embodiment deals with collecting and processing data on the sea, the present invention can of course be applied to river construction, dam construction, etc.

"Effects of the Invention" As explained above, according to the method of the present invention, it is possible to automatically collect data such as tide levels on the water without manual intervention, and to transfer the collected data on land. It can be automatically transmitted to the data processing device, which has an extremely significant labor-saving effect. Further, according to the device according to the present invention, it is possible to obtain data collection on the water without requiring human labor.

[Brief explanation of the drawing]

1 to 5 are diagrams showing the configuration of a tide level measurement system that is an embodiment of the present invention, and FIG. 1 shows a tide gauge device I installed on the sea and a data processing device 2 installed on land. 2 is a block diagram showing the electrical configuration of the tide gauging device 1, and FIG. 3 is a block diagram showing the electrical configuration of the tide gauging device 2.
FIG. 4 is a block diagram showing the configuration of the hand belt type computer 3 installed in each work boat. FIG. 5 is a diagram showing the display state of the numerical display 34 in FIG. 4. . l...Tide gauge device, 2...Data processing device, 8...Tide gauge, 9...Telescope, 10
... Solar cell, 16 ... Interface circuit, 22 ... Telescope, 25 ... Interface circuit, 26 ... JCPU.

Claims (2)

[Claims] (1) Convert the data collected by a data collection means installed on the water into an optical signal and transmit it, receive the optical signal by an optical reception means installed on land, and convert the received optical signal into digital data. A data transmission processing method on water, characterized in that the data is processed by: (2) A gantry installed vertically on the bottom of the water, a data collection means installed on the gantry, a data transmission means that converts the data collected by the data collection means into an optical signal and transmits it, and this data transmission A floating data collection device comprising: a solar cell for supplying power to the means;