JP2001004649A - Measuring system for motion of fluid body by gps - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an accurate and inexpensive measuring device for data for flood control plan and river channel plan. SOLUTION: A receiver 7 receiving data from a GPS satellite 4, and a transmitter 8 ratio-transmitting data based on the received data are stored. A floating body 2 integrally moving with changes in water or debris flow is disposed on a water surface or sediment top surface, and the position coordinates or displacement is detected by a measuring system 3 based on the received data from the floating body 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for measuring the movement of a fluid by GPS for measuring the movement of a fluid such as a debris flow, a water surface of a dam, a river or an ocean current.

[0002]

2. Description of the Related Art It is generally known that data on water levels and water flows (velocities) of rivers are important in flood control plans and river channel plans related to predetermined rivers. For this reason, the water level and the water flow of the river are measured. At present, a float called “floating” or “float” is flown in a range of about 100 m in the river, and the flow speed of the float is calculated. Calculate the flow rate in the range of the degree, estimate the flow rate from the flow rate using the so-called HQ curve (function table of water level and flow rate), and perform the above measurement at several places of the river, Water flow (flow rate) data was obtained. Alternatively, the measurement was performed using a sound wave observation device or a wire sensor scattered in a debris-flowing river.

[0003]

However, in the measurement of the water level and the water flow (velocity) of the river by the above-mentioned "floats", since the measurement is intermittent for the entire river, the data of the entire river is guessed, and Is relatively large, and a plurality of observers are required in addition to the floater. In addition, there is a problem that measurement is dangerous during a so-called flood, and in particular, it is not possible to collectively obtain measured values up to water level data.

Further, there are disadvantages that it is difficult to accumulate data on an electronic recording medium or the like, that the recovery of the float is almost impossible, and that the measurement cost is increased due to the time and labor required for the measurement. Was. On the other hand, when using wire sensors and sound wave measuring instruments, it is necessary to install multiple fixed equipment (wire sensors and sound wave measuring instruments), and these drawbacks make it more accurate for flood control and river channel planning. An inexpensive data measuring device has been desired.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, a system for measuring fluid movement by GPS according to the present invention comprises:
A receiver 7 for receiving data from the GPS satellites 4 and a transmitter 8 for wirelessly transmitting data based on the received data are provided. A floating body 2 arranged so as to move integrally with the fluctuation, and a measuring system 3 which receives transmission data from the floating body 2 and detects a position coordinate or a displacement amount of the floating body 2 based on the received data, The first feature is that the movement of the floating body 2 is detected at a remote position of the floating body 2.

The floating body 2 comprises a hollow frame 6 floating on earth and sand or water. A receiver 7 and a transmitter 8 are contained in the frame 6, and the floating frame 6 receives the floating frame 6. The second feature is that the weight portion 12 for holding the posture is attached to the frame body 6.

A third feature is that the weight portion 12 is provided below the frame body 6 at a predetermined distance from the frame body 6.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic block diagram of a measurement system 1 of a fluid movement by a GPS according to the present invention for measuring a water flow and a water amount of a river. Floating body 2 and water flow and water volume of a river are measured (calculated) based on data from floating body 2.
And a measurement system 3 for performing the measurement.

Then, the floating body 2 is floated on the river, and the floating body 2
Is moved integrally with the water of the river (sink), and the position coordinates of the floating body 2 are detected (measured) to measure the flow and amount of water in the river. The detection of the position coordinates of the floating body 2 is a system in which the floating body 2 receives a radio wave (data) from the GPS satellite 4 and the measuring system 3 measures the position coordinates of the floating body 2 based on the received data. .

As shown in FIG. 2, the floating body 2 is composed of a ball 6 which is a hollow, substantially spherical frame that can float on earth and sand or on the water surface. And a transmitter 8 for wirelessly transmitting data based on the received data on the measurement system 3 side, and a weight 9 is attached below the ball body 6. It is a structure that was given.

At this time, the receiver 7 and the transmitter 8 are accommodated in one hemisphere of the ball 6, and the weight 9 is accommodated in the hemisphere opposite to the hemisphere. Is composed of a hemispherical system unit 11 containing the receiver 7 and the transmitter 8 and a hemispherical weight unit 12 containing the weight 9. A communication antenna 13 protrudes from above the system unit 11.

When the floating body 2 is put into a river, the floating body 2 (ball body 6) floats on the water surface as shown in FIG. 2A, but the weight 9 causes the weight portion 12 side to be at the bottom of the river R. , The posture of the floating body 2 with respect to the water surface is maintained so that the system unit 11 side floats on the water surface,
That is, the receiver 7 and the transmitter 8 accommodated in the ball 6
Is maintained with respect to the water surface. Note that the system unit 11
The upper antenna 13 protrudes from the water surface.

On the other hand, the measuring system 3 can be constituted by a personal computer or the like, and as shown in FIG. 1, a receiving unit 14 for receiving a transmission signal from the floating body 2.
And a calculating unit 16 for calculating the position coordinates, coordinate displacement, etc. of the floating body 2 from the received data, and constantly (at very short time intervals) measure the flow (displacement of the position coordinates) of the floating body 2. By following, the structure can calculate the flow and water level of the river.

That is, radio waves (data) from the GPS satellites 4
Is received by the floating body 2, the coordinates in the plane direction and the height direction of the floating body 2 can be obtained. Therefore, when the floating body 2 is floating on the water surface, the water level is measured from the coordinates in the height direction of the floating body 2, By moving the floating body 2 integrally with the flowing water (the floating body 2 is made to flow), the flow velocity can be measured from the coordinate data in the plane direction of the floating body 2 and time.

The measurement system 3 is provided with data such as the topography of the surroundings of the river measured by the floating body 2,
By displaying the terrain on the display on the four side and displaying the position of the floating body 2 in the displayed terrain, it is possible to easily graphically display the flow of the river and the amount of water (water level).

As shown in FIG. 3, the river R on the upstream side is measured by the system for measuring the position of a fluid by GPS having the above structure.
And the floating body 2 is moved (flowed) integrally with the flowing water from the upstream to the downstream of the river R.
While the water level of the water surface where the floating body 2 is floating is measured,
The water flow (flow velocity) can be measured in real time based on the plane coordinates and the movement time of the floating body 2, and the water level and flow velocity of the entire river can be measured.

At this time, since the measuring system 3 is arranged at a position remote from the floating body 2, the measurer can perform the above-mentioned measurement without particularly approaching the river R, and collectively collect the above data of the river R at the time of flooding or the like. Can be easily obtained.
Further, when the measurement system 3 is configured by a personal computer or the like, it is not necessary for the measurer to be at the place where the measurement system 3 is arranged by remotely operating the personal computer. That is, it is easy to construct an unmanned system, and it is also possible to display information at a remote location on a display.

As described above, since the attitude of the ball 6 with respect to the water surface is maintained by the weight section 12, that is, the attitude of the receiver 7 with respect to the water surface is maintained, and the GPS satellite 4 is held.
And the data of the river can be measured more accurately. In addition, as shown in FIG.
May be provided at a predetermined distance from the ball body 6 via a connecting member 17 such as a chain.

In this case, when the floating body 2 is put into a river,
As shown in FIG. 2B, for example, the floating body 2 is inclined such that the weight portion 12 is delayed with respect to the ball body 6, and follows the flow of the weight portion 12, that is, the river at a position diving a predetermined distance from the water surface. Move (float) according to the flow of In the normal river R, the flow at a position diving below the surface of the water represents the flow of water, and the flow velocity of the river is based on the flow velocity at a position diving a predetermined position (1 m) from the water surface. A more accurate flow velocity (reference flow velocity) can be measured by providing a distance between 6 and 1 m inside and outside (approximately 1 m).

Since the position of the floating body 2 is measured based on the data from the GPS satellites 4, the position of the floating body 2 after the measurement can be specified by the measuring system 3, whereby the floating body 2 can be easily collected, and the measurement cost is increased. Is not higher than necessary.

During the measurement, it is desirable that the floating body 2 flows along the outer shape of the river R at a substantially central position in the width direction of the river R. For this reason, a motor and a rudder for controlling the direction are attached to the floating body 2. The outer shape of the river R is previously extracted from topographical data such as map data, and the traveling direction of the floating body 2 is actively controlled by a motor or a rudder based on the outer shape of the river R, so that the floating body 2 is positioned substantially at the center of the river R in the width direction. It can also be configured to move (flow) integrally with running water.

In the above embodiment, the case where the floating body 2 is put into the river R and the flow (water level and flow velocity) of the river R is measured has been described. However, the floating body 2 is put into a reservoir or a lake such as a dam. The water levels of dams, reservoirs, and lakes can be easily measured, and the floating body 2 is placed at a site where debris flow may occur, and the movement of the floating body 2 (displacement of position coordinates) is measured to generate debris flow. Forecasting and measurement of debris flow can be easily performed.

For this reason, for example, the automatic measurement of the water storage amount of a dam or the like at present is generally performed by constructing a guide from a bank, and according to this technique, the communication of water to the guide case is obstructed and the observation is performed. Although there was a drawback that a relatively large error might occur in the water level, the above-described technique of the present invention prevented the drawback, and the water storage amount of a dam or the like can be more accurately calculated from the position coordinates of the floating body 2 in the height direction. Can be measured.

In any of the above cases, it is necessary to dispose the floating body 2 at a river, a dam, a site where debris flow can occur, or the like. However, since the floating body 2 is formed of a relatively small ball, it is thrown toward the site of the arrangement. By doing so, the arrangement of the floating body 2 is easy. In some cases, the floating body 2 may be arranged on the site by dropping from the air by a helicopter or the like.
Further, the floating body 2 may be formed in a rocket shape or the like in accordance with the progress (flow) of water.

As described above, it is possible to further save labor and secure the observation of the debris flow, flowing water, and the water level of the stored water, and it is also possible to easily and continuously observe the debris flow and the flow of the river. Based on this data, more accurate flood control plans and river channel plans can be made, and information for predicting and warning of debris flows, floods, and the like can be provided to nearby residents and facility managers. In addition, real-time transmission of information using a computer network such as the Internet as digital data can be performed more easily.

[0026]

According to the structure of the present invention configured as described above, the three-dimensional position of the floating body which is arranged so as to move integrally with the sediment or running water floating or flowing on the water surface is moved away from the floating body. Because it can be measured in a place where it was placed, for example, floating bodies can be floated on water storage surfaces such as dams or rivers that are displaced objects,
By embedding in a slope where debris flow that may become a displacement object may occur, the water level and water movement of rivers and dams, and the movement of debris flow, etc. can be easily real-time away from rivers, dams, sites where debris flows can occur Can be measured.

[0027] Therefore, in addition to being able to observe the speed and moving state of the debris flow, it is also possible to easily observe the water level of the river and the movement of the water during a flood or the like, and to use the data relating to the debris flow, flood control plans and river channel plans. Necessary river data can be obtained more accurately. And the above observation can be performed at a place away from rivers, dams and debris flow sites, and there is an effect that the observation is performed more safely.

As a result, labor saving and safety of debris flow and flowing water observation, and continuous and instantaneous flow rate observation and ground displacement measurement are also possible, and therefore, early warning information is provided to residents or public facilities managers. This makes it easy to provide information such as floods through the Internet or the like. Since the position data of the floating body can be received at a position away from the floating body, the used floating body can be easily collected.

On the other hand, when the floating body is constituted by a hollow frame such as a receiver, a transmitter, and a ball body with a weight contained therein, the floating body is reduced in size, and the predetermined position of the frame in which the position of the receiver floats is determined. Since it is arranged at a position, it is possible to more accurately measure the position of the floating body, but in particular, by providing the weight portion below the frame body and separated by a predetermined distance from the frame body,
When the floating body is suspended in running water, a reference flow of water at a position diving a predetermined distance from the surface can be observed instead of the flow on the surface of the flowing water, and more detailed flowing water data can be obtained.

[Brief description of the drawings]

FIG. 1 is a system schematic diagram of a fluid position measurement system.

FIGS. 2A and 2B are side sectional views of a floating body floating on a river.

FIG. 3 is a schematic diagram illustrating a river measurement state by a fluid position measurement system.

[Explanation of symbols]

 Reference Signs List 4 GPS satellite 7 Receiver 8 Transmitter 2 Floating body 3 Measurement system 6 Ball (frame) 12 Weight part

Claims (3)

[Claims] A receiver (7) for receiving data from a GPS satellite (4) and a transmitter (8) for wirelessly transmitting data based on the received data, wherein the receiver floats or flows on the water surface. A floating body (2) arranged on the upper surface of the sediment to move together with the fluctuation of the water or debris flow, receiving transmission data from the floating body (2), and based on the received data, the floating body (2). A) a measurement system (3) for detecting the position coordinates or the displacement amount of the floating body (2), wherein the movement of the floating body (2) is detected at a remote position of the floating body (2). 2. A floating body (2) comprising a hollow frame (6) floating on earth and sand or water, wherein a receiver (7) and a transmitter (8) are housed in the frame (6). And a weight portion (12) for holding the receiving posture of the floating frame (6).
The system for measuring the movement of a fluid by GPS according to claim 1, wherein the frame is attached to a frame (6). 3. The system for measuring the movement of a fluid by GPS according to claim 2, wherein the weight section (12) is provided below the frame body (6) at a predetermined distance from the frame body (6).