KR100510015B1 - Device and method for compensating specific gravity measurement of flow fluid using strain gauge - Google Patents

Abstract

The present invention relates to an apparatus and method for compensating for specific gravity measurement of a flow fluid using a strain gauge, and in particular, a main tank for supplying a target solution for specific gravity measurement; A fluid microfluidic flow tank receiving the target solution and maintaining a constant flow; A specific gravity detector having a buoyancy hole and a strain gauge to measure weight data of a target solution; A temperature sensor for sensing a temperature of the target solution and outputting temperature data corresponding thereto; A control box that receives the weight and temperature data, calculates measurement data which is a specific gravity value of the target solution, compares the measured data with previously stored statistical data, and outputs various control signals corresponding thereto; A specific gravity compensation unit receiving the specific gravity compensation control signal and supplying water or a solution for specific gravity compensation of the target solution to the main tank; And an alarm unit that receives an alarm generation control signal and at the same time a warning lamp and an alarm sound corresponding thereto, the present invention can not only automatically perform specific gravity measurement and compensation of flowing fluid, but also measure There is an excellent effect that the specific gravity of the target solution can be efficiently and consistently maintained.

Description

DEVICE AND METHOD FOR COMPENSATING SPECIFIC GRAVITY MEASUREMENT OF FLOW FLUID USING STRAIN GAUGE}

The present invention relates to an apparatus and method for compensating for specific gravity measurement of a fluid fluid using a strain gauge, and more particularly, to detect weight and temperature data of a target solution in a flowing fluid, and to execute a calculation program in a CPU in real time. Time) and the specific gravity measurement method of the fluid fluid using a strain gauge to calculate the specific gravity of the target solution and to automatically compensate for the specific gravity of the target solution if there is a difference with the pre-stored statistical data It is about.

As is well known, up to now, there is no device for automatically measuring specific gravity in the middle of flowing solution, and only visual inspection using glass hydrometer is in progress in the flowing fluid. For this reason, inaccurate control was inevitable along with the inconvenience of having to manually input water after the human eye judged the specific gravity. In addition, when the change in specific gravity with temperature is considered, the manual operation becomes more impossible.

In addition, since the control of the most important specific gravity in the reaction of the chemical solution is made by a manual operator as described above, it is difficult to precisely control the chemicals in the process.For precise measurement, the solution is collected and weighed in a laboratory for quantitative measurement. After that, they had to carry out cumbersome work of converting the weight.

As shown in FIG. 1, a specific gravity measuring apparatus using a glass hydrometer is generally used, and the specific gravity measurement using the glass hydrometer is performed by reading the side of the hydrometer as a detection method by the naked eye. However, it is very difficult to determine the exact position of specific gravity by the surface tension between the hydrometer and the solution.In order to measure the exact specific gravity, the solution is placed in a container and the weight is measured and the density is calculated. There was a cumbersome problem to calculate the specific gravity through.

As described above, in the conventional specific gravity measuring apparatus, the detection method through the naked eye measuring method using a glass hydrometer is used as the representative method and is generally widely used in all industries.

On the other hand, as another conventional specific gravity measuring device, the position-derived conversion detection device by light transmission is also used as a method of transmitting the light at the position by using a glass hydrometer to obtain the specific gravity of the narrow band, but this is detected There are disadvantages and disadvantages in that the location of the solution cannot be accurately determined while the solution is flowing.

Another specific gravity measuring device is a fluid weighing detection device for a fixed part using a load cell, which is a method of taking a sample in a fixed container and weighing and processing it, together with its density calculation, to obtain an off-line (off- There was a problem that the complicated order and real-time measurement were impossible due to the line detection method.

Another specific gravity measuring device is a method of measuring a fluid by attaching a buoyancy sphere to the load cell, but this device also measures the weight and the amount of density and buoyancy manually by the operator again, like the conventional gravity measuring device described above. The manual operation by detecting the weight of specific gravity was essential.

Accordingly, the present invention has been made to solve the conventional problems as described above, the object of the present invention is to avoid the inaccurate manual specific gravity measurement through the naked eye of the operator and to automatically measure the specific gravity of the flowing fluid after flowing fluid phase The present invention provides a device and method for compensating for the specific gravity of a fluid, using a strain gauge to compensate for the specific gravity of the fluid in real time.

It is still another object of the present invention to provide an apparatus and method for compensating the specific gravity measurement of a fluidized fluid using a strain gauge, which makes it possible to use a statistical data as a database by using the database of the detected data through the automatic measurement of the specific gravity of a solution of a flowing fluid phase. There is.

In order to achieve the above object, a specific gravity measurement compensation device for a fluid fluid using the strain gauge of the present invention includes: a main tank supplying a target solution for specific gravity measurement;

A fluid microfluidic flow tank which constantly receives and maintains the target solution from the main tank and simultaneously discharges the target solution to the main tank;

Specific gravity having a buoyancy hole for detecting the weight of the target solution that flows uniformly in the fluid microfluidic flow tank and a strain gauge connected to one end of the buoyancy hole to measure weight data using buoyancy of the target solution by the buoyancy hole. Sensing unit;

A temperature sensor configured to detect a temperature of a target solution that is constantly flowing in the fluid microfluidic flow tank and output temperature data corresponding thereto;

Receives weight data and temperature data from the specific gravity sensing unit and the temperature sensing unit, calculates and stores the measured data which is the specific gravity value of the target solution, and compares the previously stored statistical data with the measured data which is the specific gravity value of the measured target solution. A control box for outputting various control signals corresponding thereto;

A specific gravity compensation unit configured to receive a specific gravity compensation control signal from the control box and simultaneously supply water or a solution for specific gravity compensation of a target solution to the main tank; And

Receiving an alarm generation control signal from the control box at the same time characterized in that consisting of a warning light and an alarm ring corresponding to the alarm.

In addition, the specific gravity measurement compensation method of the flow fluid using the strain gauge according to the present invention, the CPU in the control box receives the weight data and temperature data from the specific gravity detection unit and the temperature detection unit at the same time using the weight and temperature data Calculating a measurement data which is a specific gravity value of the target solution;

A 200th step in which the CPU in the control box compares the statistical data stored in advance in the memory unit with the measurement data which is a specific gravity value of the target solution;

Step 300, wherein the CPU in the control box determines whether the statistical data and the measurement data match;

When the statistical data and the measurement data do not match in step 300, the CPU in the control box detects that an abnormality occurs in the specific gravity of the measured solution and outputs a specific gravity compensation control signal corresponding to the specific gravity compensation process. Performing a 400 step;

A step 500 of determining, by the CPU in the control box, whether the measured data and the statistical data detected after the specific gravity compensation process match; And

If the statistical data and the measurement data coincide in step 500, the process proceeds to the 100th step, while if the statistical data and the measurement data do not coincide, the CPU in the control box cannot perform the specific gravity compensation of the target solution normally. And detecting and outputting an alarm generation control signal corresponding thereto at the same time.

Hereinafter, an apparatus and method for compensating for specific gravity measurement of a fluid fluid using a strain gauge according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a functional block diagram showing the configuration of the specific gravity measurement compensation device of the fluid flow using the strain gauge according to an embodiment of the present invention, the specific gravity measurement compensation device of the fluid flow using the strain gauge according to an embodiment of the present invention Is a specific gravity provided with the main tank 100, the fluid microfluidic flow tank 200, the buoyancy hole 301 and the strain gauge 302

Branch 300, temperature detection unit 400, control box 500, specific gravity compensation unit 600, and warning unit

It consists of 700.

The main tank 100 is a tank for supplying a target solution for specific gravity measurement, and serves to supply the target solution to be measured to the fluid microfluidic flow tank 200.

In addition, the fluid microfluidic flow tank 200 serves to constantly receive and maintain the target solution from the main tank 100 and to simultaneously discharge the target solution to the main tank 200.

Here, as shown in FIG. 4, the fluid microfluidic flow tank 200 has a supply pipe 201 formed on one side thereof to receive a target solution for measuring specific gravity from the main tank 100 in a quadrangular shape. A discharge pipe 202 is formed for discharging the target solution introduced into another opposite side on which the supply pipe 201 is formed to the main tank 100, and the supply pipe 201 and the discharge pipe 202 are formed. In order to prevent the rapid flow of the target solution introduced and discharged through the ()) is formed a first partition 203 connected to the upper surface and maintains a constant distance from the lower surface near one side of the supply pipe 201, A second partition 204 is formed at one side of the discharge pipe 202 to be connected to the lower surface and to maintain a predetermined distance from the upper surface.

The outer housing of the fluid microfluidic flow tank 200 is based on a rectangular shape, and may be variously applied, such as a cylindrical shape.

In addition, the specific gravity detection unit 300, as shown in FIG. 2 or 4, the buoyancy hole 301 and the buoyancy to detect the weight of the target solution flowing uniformly in the fluid movement flow tank 200 It is connected to one end of the ball 301 is configured to include a strain gauge 302 to measure the weight data using the buoyancy of the target solution by the buoyancy ball 301 and output to the control box 500.

In addition, the temperature sensing unit 400 detects a temperature of a target solution that is constantly flowing in the fluid microfluidic flow tank 200, and then outputs corresponding temperature data to the control box 500. do.

In addition, the control box 500 receives weight data and temperature data from the specific gravity detection unit 300 and the temperature detection unit 400, calculates the measurement data which is the specific gravity value of the target solution, and stores the measured data in the memory unit 504. On the other hand, it compares the statistical data stored in the memory unit 504 and the measurement data which is the specific gravity value of the measured target solution and serves to output various control signals corresponding thereto.

Here, as shown in FIG. 3, the control box 500 includes a first analog-digital converter 501, a second analog-digital converter 502, a key panel unit 503, a memory unit 504, and a CPU ( 505, a warning driver 506, and a display 507, wherein the first analog-to-digital converter 501 in the control box 500 inputs weight data from the specific gravity sensor 300. At the same time, the weight data is converted into digital data and output to the CPU 505.

In addition, the second analog-to-digital converter 502 in the control box 500 receives temperature data from the temperature sensor 400 and simultaneously converts the temperature data into digital data and outputs the digital data to the CPU 505. Play a role.

In addition, the key panel unit 503 in the control box 500 serves to output a key operation signal related to the specific gravity measurement of the target solution, such as timer setting and display selection by the operator, to the CPU 505.

In addition, the memory unit 504 in the control box 500 stores statistical data which is a specific gravity value of the target solution to be measured in advance, while the actual specific gravity value of the target solution flowing inside the fluid microfluidic flow tank 200. It receives and stores the measured data.

The CPU 505 in the control box 500 receives weight data and temperature data converted into digital data from the first and second analog-to-digital converters 501 and 502 and calculates measurement data which is a specific gravity value of the target solution. While outputting to the memory unit 504, it compares the statistical data stored in the memory unit 504 and the measured measurement data and then outputs various control signals corresponding thereto.

The warning driver 506 in the control box 500 receives a warning control signal from the CPU 505 and outputs a corresponding warning generation control signal to the warning unit 700.

In addition, the display unit 507 in the control box 500 receives a display control signal from the CPU 505 and simultaneously displays various measured records and statistical data corresponding thereto for the operator to check. do.

In addition, the CPU 505 in the control box 500 further includes an RS-232 communication interface 508 that can be connected to another external computer for real-time transmission of measurement data, which is a specific gravity value of a target solution to be measured. It is installed.

In addition, the specific gravity compensation unit 600 receives a specific gravity compensation control signal from the control box 500 and simultaneously supplies water or a solution for specific gravity compensation of the target solution to the main tank 100.

As shown in FIG. 2 or 4, the specific gravity compensation unit 600 receives a specific gravity compensation control signal from the control box 500 and simultaneously performs a valve on / off operation corresponding to the solenoid valve ( 601 and water or a solution for specific gravity compensation when the solenoid valve 601 is driven on are supplied to the main tank 100 through the solenoid valve 601 while being formed therein when water or a solution is supplied. It is configured to include a flow meter 602 for outputting a signal generated by the rotation of the vane to the control box 500.

In addition, the warning unit 700 receives an alarm generation control signal from the warning driving unit 506 in the control box 500 and at the same time plays a corresponding warning light and alarm to inform a worker that an abnormality has occurred.

Then, the specific gravity measurement compensation method of the fluid flow using the strain gauge using the strain gauge compensation device using the strain gauge having the configuration as described above will be described in detail with reference to the accompanying drawings.

5 is an operation flowchart showing a specific gravity measurement compensation method of the fluid flow using the strain gauge according to an embodiment of the present invention.

First, the CPU 505 in the control box 500 receives weight data and temperature data from the specific gravity sensing unit 300 and the temperature sensing unit 400, and at the same time, the specific gravity of the target solution using the weight and temperature data. The measurement data which is a value is calculated (S100).

In this case, the detailed operation process of the 100th step S100 will be described in more detail with reference to FIG. 6 as follows.

The CPU 505 in the control box 500 receives a timer setting signal set by an operator from the key panel unit 503 (S101).

Then, the CPU 505 in the control box 500 receives the weight data from the specific gravity detection unit 300 at a time interval corresponding to the timer setting signal (S102).

At the same time, the CPU 505 in the control box 500 receives temperature data at a time interval corresponding to the timer setting signal from the temperature sensor 400 (S103).

Thereafter, the CPU 505 in the control box 500 automatically drives a calculation program programmed therein to automatically calculate measurement data which is a specific gravity value of the target solution (S104).

Subsequently, the CPU 505 in the control box 500 compares the statistical data stored in the memory unit 504 with the measurement data which is the specific gravity value of the target solution (S200).

Thereafter, the CPU 505 in the control box 500 determines whether the statistical data and the measurement data match.

In this case, when the statistical data and the measurement data do not match in the 300 step (S300), the CPU 505 in the control box 500 detects that an abnormality occurs in the specific gravity of the measured target solution and correspondingly A specific gravity compensation control signal is output to the specific gravity compensation unit 600 to perform a specific gravity compensation process (S400).

Here, the detailed operation of the 400th step S400 will be described in more detail with reference to FIG. 7 as follows.

First, the CPU 505 in the control box 500 detects that an abnormality has occurred in the specific gravity value of the measured target solution (S401).

Then, the CPU 505 in the control box 500 outputs a specific gravity compensation control signal to the solenoid valve 601 in the specific gravity compensation unit 600 to compensate for the specific gravity of the measured target solution (S402).

Subsequently, the CPU 505 in the control box 500 may have a vane formed therein during normal supply of water or a solution for specific gravity compensation of the target solution from the flow meter 602 in the specific gravity compensation unit 600. In operation S403, the signal generated by the rotation of the control unit is received and the specific gravity compensation process is performed.

After such a process, the CPU 505 in the control box 500 determines whether the measured data and the statistical data detected after the specific gravity compensation process are consistent with each other (S500).

In this case, when the statistical data and the measurement data coincide in the 500th step (S500), the process proceeds to the 100th step (S100), and when the statistical data and the measurement data do not coincide, the CPU in the control box 500 ( 505 detects that the specific gravity compensation of the target solution was not normally performed and simultaneously outputs a corresponding alarm generation control signal to the warning driver 506 (S600).

The presence or absence of such an abnormality is due to the signal transmission by the rotation of the vane of the flow meter (602) in the specific gravity compensation unit 600 and the on / off operation of the solenoid valve 601 and the specific gravity detection unit 300 In connection with the problem of reading the data of the buoyancy hole 301 is made.

On the other hand, when the statistical data and the measurement data match in step 300 (S300), the CPU 505 in the control box 500 is the memory unit 504 to measure the measurement data which is the specific gravity value of the measured solution After storing in step S100, the process proceeds to step 100 (S700).

As described above, according to the apparatus and method for compensating the specific gravity of a flow fluid using a strain gauge according to the present invention, after detecting the weight and temperature data of a target solution in a flowing fluid, the real-time (real) Time) calculates the specific gravity of the target solution and automatically compensates for the specific gravity of the corresponding target solution if there is a difference with the pre-stored statistical data. In addition to this, it has an excellent effect of efficiently maintaining a constant specific gravity of the solution to be measured.

In addition, in the case of a solution in which the solution is managed by measuring the specific gravity and the specific gravity, a deviation of the specific gravity can be compensated for by the solution required in the work process, instead of just water compensation. The measured data, which is a value, can be stored in memory and used as statistical data.

In addition, by implementing a micro-processing device containing experimental data according to the characteristics of each solution to automatically compensate for the variation of specific gravity in the work process to improve the quality problems on the product to easily produce a product of uniform quality It can be effective.

1 is a schematic view for explaining the configuration of a conventional specific gravity measuring apparatus,

Figure 2 is a functional block diagram showing the configuration of the specific gravity measurement compensation device of the fluid flow using a strain gauge according to an embodiment of the present invention,

3 is a functional block diagram showing the detailed configuration of the control box of the specific gravity measurement compensation device of the flow fluid using a strain gauge according to an embodiment of the present invention;

4 is a schematic configuration diagram of a specific gravity measurement compensation device of a fluid flow using a strain gauge according to an embodiment of the present invention,

5 is an operation flowchart showing a specific gravity measurement compensation method of the fluid flow using the strain gauge according to an embodiment of the present invention,

6 is an operation flowchart showing a detailed operation of the 100th step (S100) of the method for compensating the specific gravity measurement of the fluid flow using the strain gauge according to FIG.

FIG. 7 is an operation flowchart illustrating a detailed operation of the 400th step S400 in the specific gravity measurement compensation method of the flow fluid using the strain gauge according to FIG. 5.

<Explanation of symbols for the main parts of the drawings>

100: main tank 200: fluid microfluidic flow tank

201: supply pipe 202: discharge pipe

203: First partition 204: Second partition

300: specific gravity detection unit 301: buoyancy ball

302: strain gauge 400: temperature sensing unit

500: control box 501: first analog to digital converter

502: second analog-to-digital converter 503: key panel portion

504: Memory unit 505: CPU

506: warning drive unit 507: display unit

508: RS-232 communication interface 600: specific gravity compensation

601: solenoid valve 602: flow meter

700: warning unit

Claims (9)

A main tank for supplying a target solution for measuring specific gravity; A fluid microfluidic flow tank which constantly receives and maintains the target solution from the main tank and simultaneously discharges the target solution to the main tank; Specific gravity having a buoyancy hole for detecting the weight of the target solution that flows uniformly in the fluid microfluidic flow tank and a strain gauge connected to one end of the buoyancy hole to measure weight data using buoyancy of the target solution by the buoyancy hole. Sensing unit; A temperature sensor configured to detect a temperature of a target solution that is constantly flowing in the fluid microfluidic flow tank and output temperature data corresponding thereto; Receives weight data and temperature data from the specific gravity sensing unit and the temperature sensing unit, calculates and stores the measured data which is the specific gravity value of the target solution, and compares the previously stored statistical data with the measured data which is the specific gravity value of the measured target solution. A control box for outputting various control signals corresponding thereto; A specific gravity compensation unit configured to receive a specific gravity compensation control signal from the control box and simultaneously supply water or a solution for specific gravity compensation of a target solution to the main tank; And Receiving a warning control signal from the control box and at the same time a warning light corresponding to the warning light and the alarm unit comprises a warning device for measuring the specific gravity of the fluid fluid using a strain gauge. The method of claim 1, The fluid microfluidic flow tank may have a supply pipe receiving a target solution for specific gravity measurement from the main tank in a quadrangular shape on one side thereof, and receiving the target solution introduced into another opposite side on which the supply pipe is formed. A discharge pipe for discharging to the main tank is formed, and connected to the upper surface near one side of the supply pipe and spaced apart from the lower surface in order to prevent a rapid flow of the target solution introduced and discharged through the supply pipe and the discharge pipe. The first partition is formed to maintain the, and the specific gravity measurement compensation device of the fluid flow using a strain gauge, characterized in that the second partition is connected to the lower surface near one side of the discharge pipe and maintains a predetermined distance from the upper surface . The method of claim 1, The control box may include a first analog-to-digital converter that receives weight data from the specific gravity sensor and converts the weight data into digital data and outputs the weight data; A second analog-digital converter that receives temperature data from the temperature sensor and converts the temperature data into digital data and outputs the converted digital data; A key panel unit configured to output key operation signals related to specific gravity measurement of the target solution, such as timer setting and display selection by an operator; A memory unit configured to store statistical data which is a specific gravity value of the target solution to be measured, and receive and store measurement data which is an actual specific gravity value of the target solution flowing in the fluid microfluidic flow tank; After receiving the weight data and the temperature data converted into digital data from the first and second analog-to-digital converters, the measured data, which are specific gravity values of the target solution, are calculated and output to the memory unit, while statistical data previously stored in the memory unit A CPU for comparing the measured measurement data and outputting various control signals corresponding thereto; A warning driver for receiving a warning control signal from the CPU and outputting a corresponding warning generation control signal to the warning unit; And Specific gravity measurement compensation device of the fluid fluid using a strain gauge, characterized in that it comprises a display unit for receiving a display control signal from the CPU and at the same time a variety of measured records and statistical data corresponding to the operator to check . The method of claim 1, The specific gravity compensator may include: a solenoid valve configured to receive a specific gravity compensation control signal from the control box and perform a valve on / off operation corresponding thereto; And While the solenoid valve is on, the control box supplies water or a solution for specific gravity compensation to the main tank through the solenoid valve while supplying water or a solution to the control box. Compensation apparatus for specific gravity measurement of flow fluid using a strain gauge, characterized in that the flow meter is configured to include a flow meter. The method of claim 3, wherein The CPU in the control box may further include an RS-232 communication interface that is connected to another external computer for real-time transmission of measurement data, which is a specific gravity value of the target solution to be measured. Specific gravity measurement compensation device. The CPU in the control box receives weight data and temperature data from the specific gravity sensing unit and the temperature sensing unit and calculates measurement data which is a specific gravity value of the target solution using the weight and temperature data; A 200th step in which the CPU in the control box compares the statistical data stored in advance in the memory unit with the measurement data which is a specific gravity value of the target solution; Step 300, wherein the CPU in the control box determines whether the statistical data and the measurement data match; When the statistical data and the measurement data do not match in step 300, the CPU in the control box detects that an abnormality occurs in the specific gravity of the measured solution and outputs a specific gravity compensation control signal corresponding to the specific gravity compensation process. Performing a 400 step; A step 500 of determining, by the CPU in the control box, whether the measured data and the statistical data detected after the specific gravity compensation process match; And If the statistical data and the measurement data coincide in step 500, the process proceeds to the 100th step, while if the statistical data and the measurement data do not coincide, the CPU in the control box cannot perform the specific gravity compensation of the target solution normally. Compensating the specific gravity measurement of the fluid flow using a strain gauge, characterized in that the 600 step of detecting and outputting a corresponding warning generation control signal. The method of claim 6, In step 100, the control box CPU 101 receives a timer setting signal set by an operator from a key panel unit; Step 102, wherein the CPU in the control box receives weight data from a specific gravity sensor at a time interval corresponding to a timer setting signal; Step 103, wherein the CPU in the control box receives temperature data from a temperature sensor at intervals corresponding to a timer setting signal; And Comprising a step of the CPU in the control box to drive a calculation program programmed therein step of automatically calculating the measurement data which is the specific gravity value of the target solution comprises a step 104 of the specific gravity measurement compensation method of the fluidized fluid using a strain gauge . The method of claim 6, When the statistical data and the measurement data coincide in step 300, the control step CPU 700 stores the measurement data, which is the specific gravity value of the measured solution, in the memory unit, and then proceeds to step 100 where step 100 is added. Compensation method for specific gravity measurement of a fluid fluid using a strain gauge characterized in that it comprises a furnace. The method of claim 6, In step 400, the CPU in the control box detects that an abnormality has occurred in the specific gravity value of the target solution measured; Step 402, wherein the CPU in the control box outputs a specific gravity compensation control signal to the solenoid valve in the specific gravity compensation unit to compensate for the specific gravity of the measured solution; And The CPU in the control box performs a specific gravity compensation process by receiving a signal generated by the rotation of a vane formed therein during normal supply of water or a solution for the specific gravity compensation of the target solution from the flow meter in the specific gravity compensation unit. Compensation method for specific gravity measurement of a fluid flow using a strain gauge, characterized in that the step comprises.