JPH01233314A - Portable apparatus for measuring water depth - Google Patents

Abstract

PURPOSE:To measure accurately the depth of water just below, by suspending an ultrasonic wave transmission-reception unit and by fitting inclinometers thereto to conduct measurement only when angles of inclination are within a prescribed range. CONSTITUTION:A wave transmission-reception unit 11 emits an ultrasonic wave downward, receives the ultrasonic wave reflected from the surface of the bottom of the water and measures the depth to said surface. The wave transmission- reception unit 11 is provided with a draft meter 12, whereby the depth of the unit 11 from the surface of the water is measured. In addition, an X-direction inclinometer 13 measuring an inclination in the direction X and a Y-direction inclinometer 14 measuring an inclination in the direction Y intersecting the direction X perpendicularly are fitted to the unit. When angles of the inclinations measured by these inclinometers 13 and 14 are within a prescribed range, a data processing device 16 adds up a value of the water depth sent from the ultrasonic wave transmission-reception unit 11 and a value of the water depth sent from the draft meter to calculate a value of the depth of the water therefrom.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a portable water depth measuring device for measuring the height (depth) of the water bottom surface for measuring the unevenness of the water bottom and the shape of rubble mounds created on the water bottom. Regarding measuring instruments.

(Prior art) Conventionally, as shown in Fig. 3, two work boats were used to measure the shape and height of structures such as rubble mounds built on the bottom of the water.
．． 1 to the part to be measured, move another work boat 3 along the indicated line 2, and from the work boat, a worker 4 points to the lower end as shown in Figure 4. Minute I
The scaled row 16 to which the FI 5 is fixed is suspended using the rod 7, and the water depth is measured by reading the scale at the draft position.
There is a method using a weight type red that records this manually each time, performs the same work at regular intervals along the indicated line 2, and measures the uneven shape of the water bottom.

In addition, as a method to measure the unevenness of the seabed at great depths,
There is a method of scanning the underwater surface using an ultrasonic sounder.

(Problems to be Solved by the Invention) Among the conventional methods described above, measurement using a red weight has the following problems.

■When the water gets deeper, it becomes difficult and time-consuming to raise and lower the weight using the conventional weight type red.

■Red is washed away by the current, making it difficult to measure accurately.

■The ship is moving up and down due to waves, making it difficult to read the scale.

■When measuring rubble, etc., the weight may fall between the rubble and become impossible to remove.

■It is not possible to record sounding values on a printer or magnetic tape.

On the other hand, measurement using conventional ultrasonic sounders is effective when scanning a wide range of deep water areas, but it is not suitable for measuring relatively small water depths and narrow ranges, as previously done with weight-type reds. There was a problem in that the device was too large and was rather uneconomical. The present invention addresses these conventional problems and uses a simple device that uses an ultrasonic depth sounder to measure depth and width, which was conventionally done using a weight-type red, that is accurate, convenient, and economical. The purpose is to provide a portable water depth measuring device that can measure water depth.

(Means for Solving the Problems) The portable water depth measuring device of the present invention solves the conventional problems as described above and achieves the intended purpose. a transducer unit for water depth measurement equipped with a transducer and an ultrasonic receiver; an inclinometer installed in the transducer unit to detect the inclination of the unit; A draft gauge to measure,
A hanging device for suspending the transducer below the water surface, a depth value to the water bottom by the transducer unit when the transducer unit is at an inclination angle within a predetermined range, and a depth value measured by a draft gauge. , a data processing device that calculates the water bottom height based on the tidal position, and a recording device that automatically records the water bottom height calculated by the data processing device.

(Function) When using this portable water depth measuring device, the transducer unit for water depth measurement is suspended from the work boat via a hanging device under the water surface, and the work boat is moved along the indicator line as in the conventional example described above. The ultrasonic transmitter and ultrasonic receiver are activated at regular intervals while moving along the This transducer operates when the angle of the transducer unit is within a certain range, as measured by an inclinometer, that is, when the ultrasonic wave for measurement is oriented to be emitted vertically or at an angle close to it. It is controlled so that only ultrasonic depth soundings are performed.

Another data processing bag! Now, add the water depth value measured by the draft meter to the depth value measured by the ultrasonic transceiver, correct it according to the tide level to obtain the water bottom height value, record this in the recording device, and display it on the display if necessary. let

(Example) Next, an example of implementation of the present invention will be described with reference to FIG.

In the figure, 3 is a work boat that moves along the instruction boat 2, and 7 is a rod that is operated by a worker 4 from the work boat 3.

A sounding transducer unit 11 is suspended from the tip of the rod 7 via a hanging wire 10 so as to hang below the water surface, and the rod 7 and the hanging wire 10 constitute a hanging tool. Note that this hanging device may be constructed by having the wire 10 hanging directly from the work boat 3 without using the pole 7, or by having a support protrude downward from the work boat 3 without using the wire 10. It's good.

Although not shown, the transducer unit 11 includes an ultrasonic wave transmitter that emits ultrasonic waves downward, and an ultrasonic receiver that receives the ultrasonic waves emitted by the ultrasonic wave and reflected from the bottom surface of the water. The depth from the wave transmitting/receiving unit 11 to the bottom surface of the water is measured based on the time from the emission of the ultrasonic wave to the reception of the ultrasonic wave.

Further, a draft gauge 12 is installed in the wave transmitting/receiving unit 11, and the depth of the unit 11 from the water surface is measured.

Furthermore, the wave transmitting/receiving unit 11 has an X
A directional inclinometer 13 and a Y-direction inclinometer 14 for measuring the inclination in the Y direction perpendicular to this direction are housed.

Measurement signals from each of these instruments are sent to the ship via a cord 15.

A portable data processing device 16 and a recording device 17 are installed on the ship. The data processing device 16 is
The water depth value from the ultrasonic wave transmitting/receiving unit 11 and the water depth value from the draft gauge 12 are added, and this is corrected by the shoulder position input in advance to calculate the actual water bottom height value.

Because the water surface constantly rises and falls due to waves, measurements are taken several times within a certain period of time and the results are averaged to calculate the water depth. The data processing device 16 also includes an ultrasonic reflection level indicator 18, a depth indicator 19, and a tide level setting 20.
, a sound speed correction setting 21 is provided, and it is possible to switch between single-shot measurement and continuous measurement.For single-shot measurement, the measurement start switch 2 installed at the hand position of the rod 7 is used.
2 allows for control.

The recording device 17 is provided with an IC card recorder 23 and a linter 24, and is capable of recording on an IC card and printing out on recording paper as necessary.

In this embodiment, a type of draft meter that sends out the length to the water surface by an electric signal is shown, but in addition, as shown in FIG. Alternatively, the unit 11 may be hung to maintain a constant draft, and the length from the wave transmitting/receiving unit 11 to the floater 25 may be input into the data processing device 16 in advance as a draft value.

(Effect of the invention) The portable water depth measuring device of the present invention is configured as described above,
By suspending the ultrasonic transceiver unit for water depth measurement below the water surface and attaching an inclinometer to it, measurements are taken only when within a certain angle of inclination, allowing accurate measurement of the depth directly below. It enables measurement and also has a tide level correction function, so if you set the tide level in advance, you can instantly get the corrected depth at the time of measurement. Further, by providing an averaging function for correcting the top and bottom of the waves, even more accurate depth can be obtained.

Furthermore, the obtained values can be automatically recorded on a recording device, making it possible to easily and economically measure water depth with a simple device.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram showing an example of the implementation of the present invention, Fig. 2 is a partial side view of another embodiment, Fig. 3 is a plan view of the conventional method, and Fig. 4 is a side view of the same essential parts. be. 3...Work boat, 7...Pole, 10...
... Hanging wire, 11 ... Transmitter/receiver unit, 12 ... Draft gauge, 13 ... X direction inclinometer, 14 ... Y direction inclination Total, 15...
...Code, 16... Data processing device, 17.
... Recording device, 25 ... Floater.

Claims (1)

[Claims] A water depth measuring transducer unit equipped with an ultrasonic transmitter and an ultrasonic receiver for water depth measurement toward the bottom, and an inclinometer installed in the transducer unit to detect the inclination of the unit. , a draft gauge for measuring the depth of the transducer unit from the water surface; a hanging device for suspending the transducer below the water surface; and when the transducer unit is at an inclination angle within a predetermined range. a data processing device that calculates the water bottom height based on the depth value to the water bottom obtained by the transducer unit, the depth value obtained by the draft gauge, and the tidal position; and the water bottom height calculated by the data processing device. A portable water depth measuring device equipped with a recording device that automatically records water depth.