KR100873980B1 - 3D temperature monitoring device - Google Patents

Abstract

The present invention relates to a three-dimensional temperature monitoring device, an object of the present invention is to enable the continuous measurement of the temperature distribution for each depth under the surface of the appeal, sea water, and other water at the desired time interval along the desired cross section, As a result, to provide a three-dimensional temperature monitoring device that can provide three-dimensional temperature image data.

The three-dimensional temperature monitoring apparatus according to the present invention, the temperature measuring means for measuring the temperature of the multiple points at the same time, the automatic water level observer is provided at the bottom of the temperature measuring means for measuring the depth of the temperature measuring means, the temperature measuring means and the temperature measuring unit comprises a weight which is provided at a lower end of the temperature measurement means to obtain a state of the automatic water level observer can be maintained; A position measuring unit measuring a geographical position on a map of the temperature measuring unit ; It is connected to the opposite side of the temperature measuring unit and is connected to the position measuring unit, and sends a signal to the temperature measuring unit to receive the temperature measured at that time according to a predetermined time interval and period, The depth measured by the temperature measuring unit is calculated using the depth measured by the temperature measuring unit, and the three-dimensional temperature distribution data is calculated by matching the temperature measured by the temperature measuring unit, the calculated depth and the position measured by the position measuring unit. And control analysis unit for storing; Characterized in that comprises a.

Description

3D Temperature Monitoring System {3 Dimensional Temperature Monitoring System}

1 is a schematic diagram of a thermistor chain according to the prior art;

2 is a schematic diagram of a single temperature sensor system according to the prior art;

3 is a conceptual diagram of a temperature monitoring apparatus according to the present invention.

4 is a schematic view of a three-dimensional temperature monitoring apparatus according to the present invention.

5 is a conventional hydraulic pressure sensor shape.

Figure 6 (A), (B) is a DGPS installation and reception of the temperature monitoring apparatus according to the present invention.

Figure 6 (C) is a temperature measuring unit and a control analysis of the temperature monitoring apparatus according to the present invention.

Figure 6 (D) is the installation and measurement of the temperature monitoring device according to the present invention.

7 is a temperature measurement position map of Daecheong dam surface.

7A, 7B, 7C, 7D and 7E are cross-sectional temperature profiles for DC-1, DC-2, DC-3, DC-4 and DC-5 respectively shown in FIG.

8 is a temperature measurement position map of the Imha dam lake surface.

FIG. 8A is a transverse temperature profile for DC-6 shown in FIG. 8. FIG.

** Description of the symbols for the main parts of the drawings **

100: thermistor chain 110: temperature measuring unit

111: thermistor 112: rope

120: float 130: display unit

140: weight

200: single temperature sensor system 210: temperature measuring unit

211: temperature sensor 212: cable

220: control analysis unit

300: single temperature sensor system 310: temperature measuring unit

311: temperature sensor 312: cable

313: water pressure sensor 320: control analysis unit

400: three-dimensional temperature monitoring device 410: temperature measuring unit

411: temperature sensor 412: cable

413: automatic water level gauge 414: weight

420: control analysis unit 430: DGPS

The present invention relates to a temperature monitoring device. Temperature measurements in areas of appeal, seawater, or water surface are closely related to areas such as environmental science, environmental engineering, geothermal, geotechnical engineering, and ecology. The reason is that temperature is the most basic and representative physical quantity that identifies various properties and causes.

For example, different water temperatures in the vertical direction in the reservoir cause a density difference in the reservoir, which is an important cause of stratification in the reservoir. Therefore, by monitoring the water temperature, the stratification patterns in the reservoir can be identified. In addition, it is possible to know where the water temperature medicine layer is formed in the reservoir by grasping the aspect of the water temperature. Since the water temperature medicine layer is a path for turbid water inflow, grasping the location of the water temperature medicine layer can create the effect of selective selection of turbid water. In addition, it is possible to predict and prepare for the occurrence of green algae in the reservoir by understanding the water temperature. In detail, if a large amount of P is introduced and the proper water temperature is maintained, chlorophyll A will increase when the eutrophication in the reservoir continues, and as a result, it is predicted that green algae will occur in the reservoir surface. In addition, research on measuring and interpreting reservoir water temperature, such as the use of basic data for estimating the behavior of large quantities of SS and the determination of the discharge water temperature that causes fog near dams, is necessary for reservoir management. It is obvious that this is the most essential element. However, although the concept of temperature in general is very familiar, there are a number of academic branches that are actually represented by the physical quantity of temperature, and their range of application is very wide, so that the conventional single temperature sensor is a natural continuous It was not possible to detect change profiles in three dimensions.

One of the most common monitoring techniques in use today is thermistor chains. Thermistor is a device having a function of measuring temperature and storing data for a certain period of time, and is typically in the form as shown in FIG. Data is collected by inserting a plurality of thermistors connected in the vertical direction into the reservoir as shown in FIG. Components of the thermistor chain 100 may be roughly divided into four parts, the temperature measuring unit 110, the float 120, the display unit 130, and the weight 140, as shown in FIG. 1B. . Temperature measuring unit 110 is formed by connecting a plurality of thermistors 111 with a rope 112 to measure the water temperature distribution in the vertical direction in the water, the weight 140 at the lower end of the temperature measuring unit 110 A, the upper end portion is provided with a float 120 serves to give a pulling force in the opposite direction, respectively, so that the temperature measuring unit 110 can form a straight line in the vertical direction. In the float 120, a material such as styrofoam, which is not only easy to fix the rope but also low in price, may have an economic effect. The display unit 130 has a function to easily determine where the thermistor chain 100 is installed, and therefore should always be on the surface of the water so that the rope of a suitable length does not interfere with the operation of the ship. To be connected to the float 120 to be installed.

Since the thermistor chain 100 is installed at a fixed position, it is difficult for the measurer to grasp desired desired cross-sectional temperature characteristics other than the fixed position. In addition, there is a tendency that it is not easy to acquire data according to the change of depth, and there is a disadvantage that maintenance is very inconvenient. In addition, the thermistor chain 100 changes the verticality according to the flow rate difference of the upper and lower layers of water, the data obtained in this way has a fatal problem that is meaningless.

Another way of measuring water temperature is to measure temperature using a single temperature sensor system 200 as shown in FIG. The single temperature sensor system 200 is very simple in configuration, the temperature measuring unit 210 consisting of a temperature sensor 211 and a cable 212, the control to record and interpret the temperature data measured from the temperature sensor 211 The analysis unit 220 may be divided. The control analysis unit 220 calculates the depth in which the current temperature sensor 211 is located using the length of the cable 212 submerged in water, and calculates the temperature data measured from the temperature sensor 211 using the calculated depth data. Record in conjunction with To measure data at different depths, Time1, Time2, Time3,... While pulling up the cable 212 as in the above, the depth and temperature at that time were measured to acquire data.

Such a method has an advantage in that water temperature at a desired depth can be measured when compared with the method using the thermistor chain 100. However, in order to measure the water temperature at various depths using such a single temperature sensor system 200, the time difference is increased for each depth due to the time taken to raise the cable to an appropriate depth and measure the water temperature as described above. Will be created. In addition, in order to measure water temperature at different depths at the same time, it is very inconvenient to use a method in which several sensors are attached to different lengths of cables 212 and used. As well as when using the thermistor chain 100, it is very difficult to measure the water temperature at the correct depth because the premise that the cable 212 is obtained in the vertical direction is not practical in practice. Therefore, there is a problem that the obtained data becomes unreliable.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to provide a temperature distribution for each depth under the appeal or sea water, and other water surface desired time interval along the user's desired cross section The present invention provides a three-dimensional temperature monitoring device capable of continuous measurement, and consequently, providing three-dimensional temperature constellation data.

The three-dimensional temperature monitoring apparatus of the present invention for achieving the above object, the temperature measuring means for measuring the temperature of multiple points at the same time, is provided at the bottom of the temperature measuring means for measuring the depth of the temperature measuring means A temperature measuring unit including an weight provided at a lower end of the temperature measuring means such that the automatic water level observer , the temperature measuring means, and the water level measuring unit can be maintained; A position measuring unit measuring a geographical position on a map of the temperature measuring unit ; It is connected to the opposite side of the temperature measuring unit and is connected to the position measuring unit, and sends a signal to the temperature measuring unit to receive the temperature measured at that time according to a predetermined time interval and period, The depth measured by the temperature measuring unit is calculated using the depth measured by the temperature measuring unit, and the three-dimensional temperature distribution data is calculated by matching the temperature measured by the temperature measuring unit, the calculated depth and the position measured by the position measuring unit. And control analysis unit for storing; Characterized in that comprises a. At this time, the automatic water level gauge is a water pressure sensor, it is characterized in that the inside of the lower end of the temperature measuring means or attached to the outside of the temperature measuring means. Wherein the temperature measuring means is characterized in that it comprises a temperature sensor having a function (addressable) to notify the position (self) when receiving a modulation signal (modulation signal) from the outside, the temperature measuring means is a plurality of cables in a single line A temperature sensor is a multiple temperature sensor (Thermal Line Sensor) is arranged at predetermined intervals, the temperature sensor is introduced into the cable or attached to the outside of the cable, the temperature measuring means is a multiple temperature sensor consisting of an optical fiber temperature sensor (Thermal Line Sensor). The temperature measuring unit may include at least one of the multiple temperature sensors, and the location measuring unit measures the location in real time and matches the location of a previously input numerical map to adjust the geographical position and movement trajectory of the current temperature measuring unit. It is preferable that it is a GPS (Global Positioning System) or DGPS (Differential GPS) which calculates, and it is preferable that the said control analysis part and a position measuring part are mounted in a moving means, and are movable.

Hereinafter, a three-dimensional temperature monitoring apparatus according to the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

As described above, since the single temperature sensor system 200 used in the conventional temperature monitoring is a technology based on a single sensor, there are limitations in terms of spatial and temperature measurement, such as technical and economic. That is, in the related art, as shown in FIG. 2 and related thereto, as a method of measuring one temperature sensor corresponding to one cable end in correspondence, when the temperature is measured for multiple points, the cable is pulled by an attractive force. Because it had to be pulled up to measure the depth to the desired point, there was a time difference between the measured temperature data. In addition, in order to simultaneously measure the temperature at multiple points in order to avoid the occurrence of such a time difference, there is a problem in that a cable with a single temperature sensor must be obtained simultaneously in several different lengths. In addition, the most fundamental problem was that it was impossible to measure the correct level when the cable with the temperature sensor could not maintain the verticality.

In the present invention, in order to solve such a problem, a temperature monitoring apparatus 300 having a water pressure sensor 313 attached to the temperature sensor 311 as shown in FIG. 3 is used. The water pressure sensor 313 makes it possible to accurately measure the depth by measuring the water pressure by using a property in which a proportional relationship is established between the depth in the water and the water pressure. As shown in Figure 3, by connecting a plurality of temperature measuring unit 310 attached to the temperature sensor 311 and the water pressure sensor 313 at the end of the cable 312 to the control analysis unit 320, Accurate depth and temperature can be measured simultaneously.

As described above, it is a basic idea in the present invention to monitor the temperature by using the temperature sensor and the pressure sensor simultaneously, but in order to solve various problems as described above and realize the realization of the temperature measurement at the same time, it is possible to multiply in a single cable. The method of arranging the temperature sensors was used. Such a method will be referred to as a multiple temperature sensor method. The multi-temperature sensor used in the present invention may use an optical fiber type or may use an embedded type of individual sensor address information. In order to improve the shortcomings of the single temperature sensor method as described above, in the present invention, a plurality of temperature sensors can be freely introduced into a single cable, and the arrangement of the temperature sensor may also be determined according to the user's requirements. Can be arranged freely or densely or in any position. As such, by connecting a plurality of temperature sensors to a single cable and then recording a device on one side, temperature monitoring for multiple points can be easily and conveniently performed by depth or interval in real time according to a user setting. .

4 is a schematic diagram of a temperature monitoring apparatus according to the present invention. 4 illustrates an apparatus using a plurality of address information-embedded individual temperature sensors instead of an optical fiber temperature sensor, but as described above, since the operation method is the same as the present embodiment, an optical fiber instead of a plurality of address information-embedded individual temperature sensors is provided. You can also use a temperature sensor. First, a plurality of temperature sensors 411 are attached to a single cable 412. As described above, the temperature sensors 411 are arranged at intervals desired by a user. In this case, the temperature sensors 411 may be inserted and attached to the inside of the cable 412 or may be attached to the outside of the cable 412. As described above, the plurality of temperature sensors 411 are arranged in the cable 412 at predetermined intervals by the user or as the temperature sensors of the optical fiber type as described above, and thus are formed in a single line shape, and thus, A device capable of measuring temperature is referred to as a thermal line sensor.

One side of the cable 412 is attached to the automatic water level gauge 413, and further down to the lower end of the cable 412, the weight 414 is attached. As described above, in the three-dimensional temperature monitoring apparatus 400 according to the present invention, the temperature measuring unit 410 includes a cable 412 on which a plurality of temperature sensors 411 are disposed, an automatic water level gauge 413 attached to one side thereof, and Weight 414. The weight 414 has a function similar to the weights used in the conventional temperature measurement system, that is, the weight 414 is the temperature sensor 411, cable 412, automatic water level gauge 413 and weight 414. The whole of the temperature measuring unit 410, including itself, is made of a material having a suitable weight so as to be submerged in water and maintain a certain degree of verticality. At this time, since the tension due to the weight of the weight 414 is strong, the cable 412 may be damaged, so that a separate line is connected to the end of the cable 412 and the weight 414 is attached to the line. It is preferable.

As described above, the plurality of temperature sensors 411 are disposed in the cable 412, some of which are sparsely or densely spaced, some of which attach sensitive sensors or insensitive but inexpensive sensors, etc. Any number can be arranged according to the requirements of the user. Therefore, depending on the user setting, it is possible to easily and economically measure the temperature for multiple points by depth and interval. In addition, each temperature sensor 411 has an addressable thermal sensor capable of receiving a modulation signal and indicating its position. Here, 'magnetic location' of the temperature sensor 411 means 'magnetic address', which is a location concept of the addressable sensor. The control analysis unit 420 connected to one side of the cable 412 opposite the attaching part of the weight 414 transmits a modulation signal to the temperature sensor 411 to check the position of each temperature sensor 411. At the same time, the measured temperature data is sent together and stored to match the time and depth. The control analysis unit 420 repeatedly performs such a measuring operation for each long time interval set by the user, so that temperature data can be accumulated in real time.

An automatic water level gauge 413 is attached to the lower end of the cable 412 on the weight 414 side of the measuring unit 410. The automatic water level gauge 413 preferably uses a water pressure sensor, and is generally shaped as shown in FIG. 5. The principle of measuring the depth with the water pressure sensor may have a variety of forms, but typically the method of measuring the water pressure using the built-in pressure sensor, and accordingly the method of measuring the length of the water column on the upper part of the depth where the instrument is located Used. When the meter is located below the groundwater level, the pressure by the atmospheric pressure as well as the pressure by the water column is measured together, and the measured value is automatically measured and stored in the internal memory. If there is no change in atmospheric pressure or the change is small and within the range where the effect is negligible, the change value (in general, cm units) displayed on the measuring instrument becomes the ground water level change as it is.

Since the automatic water level gauge 413 should be installed under the surface of the water as a pressure sensor as described above, in order to ensure that the automatic water level gauge 413 is always locked under the surface of the water level, the water pressure sensor should be positioned as deep as possible. To do so, connect and fasten the cable 412 in which the temperature sensor 411 is disposed at a predetermined depth within a range not exceeding the maximum depth that can be measured, and then record the initial depth of the sensor or at a specific time. By deliberately approaching the water surface and zeroing it to the recorded value of this section, it is possible to always measure the correct pressure (ie depth). Of course, the water pressure sensor used in the automatic water level detector 413 is preferably a water pressure sensor that calculates the same head value regardless of the vertical, horizontal, gradient.

By including the automatic water level detector 413 in the temperature measuring unit 410 as described above, in the conventional temperature measuring method, it is necessary to limit the temperature measuring unit to be formed in the vertical direction to precisely depth the point where the temperature sensor is located. There will be no. That is, in the absence of the automatic water level gauge 413, the depth of field using the position of each temperature sensor 411 on the cable 412 on the assumption that the temperature measuring section 410 is connected in a manner similar to conventional devices. However, as described in the problem of the prior art, such a method has been a problem to obtain an inaccurate result when the verticality of the temperature measuring unit 410 is not maintained. However, in the three-dimensional temperature monitoring device 400 according to the present invention, since the automatic water level measuring instrument 413 measures the depth of each temperature sensor and the depth of the upper part of the corresponding time frame in real time, the result is analyzed. By simply matching the time, an accurate three-dimensional cross section of the temperature distribution can be obtained. Therefore, when the three-dimensional temperature monitoring device 400 according to the present invention does not matter even if the verticality of the temperature measuring unit 410 may not be maintained, the three-dimensional temperature monitoring device 400 on a non-powered line movable on the ship or the water surface. It can be used while loading and moving so that it is easier and more convenient to monitor the three-dimensional temperature distribution.

As described above, the control analysis unit 420 transmits a modulation signal to the temperature measuring unit 410 at predetermined time intervals so that the temperature measuring unit 410 measures temperature for each depth and collects and stores the temperature data. . At this time, the control analysis unit 420 is preferably provided with a GPS (Global Positioning System) or DGPS (Differential GPS, 430) as a position measuring unit, especially DGPS (430) which is used a lot as a means for measuring the position in the ship Is preferably used. As described above, the three-dimensional temperature monitoring apparatus 400 according to the present invention measures temperature while loading and moving on a ship, and thus accurate three-dimensional temperature distribution data only when the ship, that is, the movement path of the device 400 itself, can be accurately understood. Can be obtained. Although accurate positioning can be difficult in the classical way, especially on the sea, the DGPS 430 allows the system 400 to input the exact path and the position trajectory of the cross section into a numerical map prepared in advance. You will get

6 is an actual installation and measurement of the three-dimensional temperature monitoring apparatus according to the present invention. 6 (A) and 5 (B) show the installation and reception of the DGPS. As shown in FIG. 6 (B), the trajectory of the ship is accurately displayed on the numerical map displayed on the computer screen. Figure 6 (C) is a state of the temperature measuring unit and the control analysis of the temperature monitoring device according to the present invention, Figure 6 (D) is a state of installing and measuring the device.

7 and 8 show the results of performing the temperature monitoring using the three-dimensional temperature monitoring apparatus according to the present invention. The target test area was the Daecheong Dam appeals in Cheongwon-gun, Chungcheongbuk-do, and the Imha Dam appeals in Andong, Gyeongsangbuk-do (Fig. 8). The three-dimensional temperature monitoring device according to the present invention was measured while moving on a ship. In addition, in order to determine the exact position in the appeal, the coordinates were set using DGPS, and the position coordinates continuously moving on the computer screen could be recorded in real time. The temperature measuring part, which is formed in the form of a line, was installed to be submerged in water about 25m, and the depth of each point was accurately calculated by using a pressure sensor capable of accurate depth measurement in consideration of the change in the vertical degree due to the wind speed.

FIG. 7 is a temperature measurement position map of the Daecheong dam surface, and FIGS. 7A, 7B, 7C, 7D, and 7E are respectively shown in DC-1, DC-2, DC-3, DC-4, and DC-5 shown in FIG. Transverse temperature profile. FIG. 8 is a temperature measurement position map of the descent surface, and FIG. 8A is a cross-sectional temperature profile for DC-6 shown in FIG. 8. 7A to 7E and 8A, the three-dimensional temperature monitoring apparatus according to the present invention enables a continuous three-dimensional temperature monitoring in time that cannot be solved by a single sensor, so that the three-dimensional and continuous time-space-specific temperature data It can be seen that

The present invention is not limited to the above-described embodiments, and the scope of application of the present invention is not limited to those of ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made.

As described above, according to the present invention, the inconvenience caused because the prior art had to adjust the depth by raising or lowering the cable by pulling or lowering in order to measure the temperature for the depth of multiple points, thus pulling up the cable in this way In order to solve the inaccuracy of the temperature distribution data caused by the time difference of each temperature measurement time that occurs in the process of lowering or lowering, and the inaccuracy of the temperature distribution data due to the time difference as described above, a plurality of cables with a single temperature sensor must be introduced. It solves problems such as rising economic cost at once and makes it easy and convenient to obtain continuous temporal depth temperature data for the desired cross section where appeal, sea water and other water surface exist. There is. In addition, the temperature monitoring device according to the present invention can measure the temperature data for the correct depth regardless of the verticality of the temperature measuring unit, unlike the devices according to the prior art, which can obtain accurate data only if the verticality of the temperature measuring unit is maintained. It works. In addition, as described above, as well as the depth and temperature, as well as the movement trajectory is accurately measured using the DGPS, there is a great effect to obtain the accurate three-dimensional temperature distribution by matching the depth, temperature and the trajectory.

Claims (9)

Temperature measuring means for measuring the temperature of multiple points at the same time, the automatic water level gauge provided at the bottom of the temperature measuring means for measuring the depth of the temperature measuring means, the acquisition state of the temperature measuring means and the automatic water level gauge can be maintained A temperature measuring unit comprising a weight provided at a lower end of the temperature measuring unit so as to be provided ; A position measuring unit measuring a geographical position on a map of the temperature measuring unit ; It is connected to the opposite side of the temperature measuring unit and is connected to the position measuring unit, and sends a signal to the temperature measuring unit to receive the temperature measured at that time according to a predetermined time interval and period, The depth measured by the temperature measuring unit is calculated using the depth measured by the temperature measuring unit, and the three-dimensional temperature distribution data is calculated by matching the temperature measured by the temperature measuring unit, the calculated depth and the position measured by the position measuring unit. And control analysis unit for storing; Three-dimensional temperature monitoring apparatus comprising a. The method of claim 1, The automatic water level gauge is a water pressure sensor, the three-dimensional temperature monitoring device, characterized in that the inside of the lower temperature measuring means is attached or attached to the outside of the lower temperature measuring means. The method of claim 2, The temperature measuring means comprises a temperature sensor having a function (addressable) to notify the position of the magnetic signal corresponding to receiving a modulation signal (modulation signal) from the control analysis unit. The method of claim 3, wherein The temperature measuring means is a three-dimensional temperature monitoring device, characterized in that a plurality of temperature sensors (Thermal Line Sensor) is a plurality of temperature sensors are arranged at a predetermined interval on a single line of cable. The method of claim 4, wherein The temperature sensor is a three-dimensional temperature monitoring device, characterized in that the inside of the cable is attached or attached to the outside of the cable. The method of claim 3, wherein The temperature measuring means is a three-dimensional temperature monitoring device, characterized in that the multiple temperature sensor (Thermal Line Sensor) consisting of an optical fiber temperature sensor. The method according to any one of claims 4 to 6, The temperature measuring unit includes a three-dimensional temperature sensor, characterized in that at least one or more. The method of claim 7, wherein The position measuring unit is a GPS (Global Positioning System) or DGPS (Differential GPS) for calculating the geographical position and the movement trajectory of the current temperature measuring unit by measuring the position in real time and matching the position of the previously input numerical map 3 Dimensional temperature monitoring device. The method of claim 8, The control analysis unit and the position measuring unit is mounted on the water moving means three-dimensional temperature monitoring device, characterized in that the movement.

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