JPH11148927A - Water quality measuring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water quality measuring system capable of repeatedly allowing a ship to accurately reach a certain measuring water area of a previous time and capable of collecting data only in the certain measuring water area. SOLUTION: A ship 2 is equipped with a water quality measuring device 3, a GPS receiver 6 for obtaining position data, a point setting means 7 for presetting a water quality measuring point and an automatic steering navigation means for navigating the ship 2 to the certain measuring water area around the preset measuring point and, on the basis of detection data such that the ship 2 enters the certain measuring water area, the measurement of water quality by the water quality measuring device 3 is started.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water quality measuring system, and more particularly to a global positioning system (hereinafter, referred to as GPS) using artificial satellites.
The present invention relates to a water quality measurement system that uses a computer.

[0002]

2. Description of the Related Art For example, when measuring water quality at a certain point in a wide area of water such as a lake or a sea,
A water quality measurement device and a GPS receiver for obtaining position information are mounted on a ship, and the first measurement point is confirmed based on the position information obtained from the GPS.
The water area within a certain range around the previous measurement point is set as the measurement water area, and the ship is placed in the above-mentioned certain measurement water area based on the positional information obtained from the GPS and the confirmation information of the previous measurement point. When the ship is navigating and the ship is in a certain measuring area, the water quality is measured by the water quality measuring device.

[0003]

However, since the flow of water and seawater in lakes and marshes and the sea changes every season depending on the season, the above-mentioned water quality measurement is performed at multiple points every day or every week, for example, throughout the year. It is common practice to repeatedly perform the measurement at each measurement point, but in each case, navigating the ship into a certain measurement water area in the previous time was very troublesome even with a considerable steering technique.

In addition, a person in charge of steering and a person in charge of measuring water quality cooperate with each other, and the person in charge of steering steers the ship so that the ship does not deviate from a certain measuring water area during water quality measurement. Upon receiving a signal from the steering operator, the water quality measurement staff stops water quality measurement when the ship leaves a certain measurement water area, and resumes water quality measurement when the ship returns to a certain measurement water area. In the present situation, it required a very troublesome linking operation, and sometimes a linking error caused measurement data to be collected outside a certain measuring area.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is easy to repeatedly and accurately reach a ship to a certain measuring water area at the previous time, and furthermore, data outside a certain measuring water area. The purpose is to provide a water quality measurement system that can eliminate collection.

[0006]

The technical means adopted by the present invention to achieve the above object are as follows. That is, the water quality measurement system according to the present invention includes a water quality measurement device, a GPS receiver for obtaining position information, a point setting means for presetting a water quality measurement point,
The ship is equipped with automatic steering navigation means for navigating the ship within a certain measuring water area around a preset measuring point based on the position information obtained from the PS and the setting information of the water quality measuring point, Is characterized in that the water quality measurement by the water quality measurement device is started based on the detection information that the water quality has entered a certain measurement water area.

[0007] According to the above water quality measurement system, GPS
Based on the position information obtained from, the navigation means of automatic steering that makes the ship navigate in a certain measuring water area is adopted, so that the ship always keeps the ship in a certain measuring water area without any troublesome operation. It is easily possible to navigate accurately within.

Further, once a ship enters a certain measuring water area, the ship is always kept in a certain measuring water area by automatic steering, or the ship is moved to a certain measuring water area due to wind or flow. Even if the ship gets out of the way, the ship is automatically returned to a certain measuring area immediately, so that there is no trouble to steer the ship all the way during the water quality measurement.

Further, since it is not an exaggeration to say that a ship stays in a certain measuring water area, it is troublesome and erroneous to start water quality measurement based on detection information that the ship has entered a certain measuring water area. Therefore, it is possible to collect data only in a certain measurement water area without any need for a winning coordination operation.

Preferably, the point setting means is provided with a function of setting a port of call, while the water quality measurement by the water quality measurement device is performed for a predetermined measurement time based on the detection information that the ship has entered a certain measurement water area. Automatically, so that a series of water quality measurements, including navigating and calling a ship to a measurement area, can be performed by unmanned operation.

Alternatively, if a plurality of water quality measurement points are set in advance and the ship is navigated in the order of predetermined points, water quality measurement in a certain measurement water area at multiple points can be performed by unmanning as necessary. It is possible to do.

Further, if a transmitter for transmitting the water quality measurement data to the base station by radio is provided, for example, the distribution of the water quality measurement data in a certain measurement water area at multiple points can be made in real time while being at a remote place. It can be easily collected and identified.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration diagram of a water quality measuring system according to an embodiment of the present invention. A water quality measuring device 2 and a plurality of artificial satellites 4, 5 G for obtaining coordinate position information
PS receiver 6 and point setting means 7 for previously setting coordinate points for water quality measurement points and port call points
And a transmitter 9 for wirelessly transmitting water quality measurement data from the water quality measurement device 3 to a remote base station 8.

The navigation means 1 for automatic steering approximates the position information obtained from the GPS to the setting information of the measuring point based on the position information obtained from the GPS and the setting information of a plurality of water quality measuring points set in advance. That is, as shown in FIG. 2, the ship 2 is automatically steered so that the ship 2 navigates in a certain measurement water area W around a preset water quality measurement point P, and is set in advance. When there are a plurality of water quality measurement points P, navigation to a certain measurement water area W is performed in the order of the predetermined points P.

The navigation by automatic steering to the port of call H is performed so that the position information obtained from the GPS almost coincides with the setting information of the port of call H, and the ship 2 has a certain measurement water area W and a port of call. When approaching H, control is performed to slow down the boat speed.

In FIGS. 3 and 4 showing the water quality measuring device 3, reference numeral 10 denotes a sensor main body, and a power supply 11 and an arithmetic unit 13 having a memory unit 12, and the calculated measurement data are recorded in time series. The data logger 14 is built in a watertight case 15 having a pressure-resistant structure.

Reference numeral 16A denotes a water depth measuring chip for measuring the water depth based on the detection of the water pressure, for example, by a pressure gauge, which is embedded in the sensor body 10. Reference numeral 16B denotes a conductivity measuring chip for calculating the salt concentration and the density based on the conductivity, and is provided with a thermometer 17 integrally.

16C is a turbidity measuring chip, 16D is a dissolved oxygen measuring chip, and these measuring chips 16C, 16C
D and the conductivity measurement chip 16B are detachably connected to the sensor body 10 via the connector 18A.

Reference numeral 16E denotes a pH measurement chip in which a comparative electrode and a glass electrode are combined, 16F denotes a redox potential measurement chip, and 16G denotes a measurement chip other than pH, for example, chloride ions.

In addition to the chloride ion measurement chip 16G described above, a fluoride ion measurement chip 16H and a nitrate ion measurement chip 1
6I, a calcium ion measurement chip 16J, a cyan ion measurement chip 16K, a sulfide ion measurement chip 16L, an iodine ion measurement chip 16M, a bromine ion measurement chip 16N, and a copper ion measurement chip 16P And a cadmium ion measurement chip 16Q, a lead ion measurement chip 16R, a thiocyan ion measurement chip 16S, and a silver ion measurement chip 16T.

These measuring chips 16G to 16T and p
H measurement chip 16E and oxidation-reduction potential measurement chip 16
F is detachably connected to the sensor main body 10 via the connector 18B and with compatibility.

Reference numeral 19 denotes a display device, in addition to a display 20 for displaying water quality measurement data, etc., a power key 21, a function key 22, a measurement start / end key 23, a calibration key 24, a select key 25, an up / down key. 26,
27 and the like, and the display device 19 and the sensor main body 10 are connected by a waterproof type communication cable 28 which also serves to suspend and hold the sensor main body 10.

Numeral 29 is a winding means for the communication cable 28, which comprises a reel 30 and a motor 31. The motor 31 is provided with information from the automatic steering navigation means 1, that is, the ship 2
Is controlled to submerge the sensor body 10 based on the information that the sensor body 10 has reached a certain measurement water area W.

In addition, the navigation means 1 of the automatic steering uses the information that the ship 2 has reached a certain measuring water area W to give priority to the power
And a function of turning off the power supply 11 and controlling the motor 31 on the sensor body lifting side when a preset water quality measurement time has elapsed.

According to the water quality measuring system having the above-mentioned configuration, a plurality of arbitrary water quality measuring points P and the port call points H are set in advance at coordinate positions, and the ship 2 departs by the navigation means 1 for automatic steering. Then, the ship 2 is automatically navigated to a certain measurement water area W around the point P in the order of a plurality of measurement points P set in advance.

Each time the ship 2 reaches a certain measurement water area W, the sensor body 10 is automatically submerged and the power supply 11
Is turned on, the water quality measurement by the water quality measurement device 3 is automatically started, and when a preset measurement time has elapsed, the power supply 11 is turned off and the sensor body 10 is raised above the water surface.

During this time, the water quality measurement data is stored in the memory means 12 and the necessary measurement data is stored in the data logger 14 by arbitrarily operating the data capture switch S of the data logger 14 with the function key 12.
And is displayed on the display 20 on the ship, and is also input to, for example, the personal computer 32 of the base station 8 through the transmitter 9.
Can be collected and identified in real time while at the remote base station 8.

At this time, the ship 2 is controlled by the navigation means 1 of the automatic steering so as to remain in the certain measuring water area W, so that the troublesome, erroneous and winning linking work is not required at all. In other words, data can be collected only in a certain measurement water area.

When the water quality measurement in the point order is completed, the ship 2 automatically calls at the port of call H by the navigation means 1 of the automatic steering. Including navigating and calling,
A series of water quality measurements can be performed automatically, that is, unmanned.

In the case of such an unmanned mode, it is not necessary to equip the display device 19, and for example, the power supply 11 and the If the data capture switch S of the data logger 14 is turned on, this can be used as a hanging holder such as a wire or a chain instead of the expensive waterproof cable 18. The measurement may be performed artificially.

[0031]

As described above, according to the present invention,
It is easy to make a ship repeatedly reach a certain measuring area at the previous time, and data collection is performed only in a certain measuring area without any troublesome, error-prone and cooperative work. A water quality measurement system is provided.

In addition, a series of water quality measurements in a certain measurement water area at multiple points, including making a ship navigate and call at a certain measurement water area, is performed by unmanned operation. A water quality measurement system is also provided that allows the distribution to be collected and identified in real time while at a remote location.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a water quality measurement system.

FIG. 2 is an explanatory view of navigation in the order of measurement points of a ship.

FIG. 3 is a perspective view of a water quality measuring device.

FIG. 4 is a block diagram of a water quality measuring device.

[Explanation of symbols]

1. Navigation means for automatic steering, 2. Ship, 3. Water quality measuring device,
6: GPS receiver, 7: Point setting means, 8: Base station, 9: Transmitter, H: Calling point, P: Water quality measurement point, W: Certain measurement water area.

Claims (4)

[Claims] 1. A water quality measuring device, a GPS receiver for obtaining position information, a point setting means for presetting a water quality measurement point, position information and a water quality measurement point setting information obtained from GPS. The ship is equipped with an automatic steering navigation means for navigating the ship within a certain measuring water area around a predetermined measuring point based on the detection information that the ship has entered a certain measuring water area. A water quality measurement system, wherein water quality measurement by the water quality measurement device is started. 2. The point setting means is provided with a function of setting a port of call, while the water quality measurement by the water quality measurement device is automatically performed for a predetermined measurement time based on detection information that the ship has entered a certain measurement water area. The water quality measurement system according to claim 1, wherein the water quality measurement system is started. 3. The water quality measurement system according to claim 1, wherein a plurality of water quality measurement points are set in advance, and the ship is navigated in the order of predetermined points. 4. The water quality measurement system according to claim 1, further comprising a transmitter that wirelessly transmits the water quality measurement data to a base station.