Apparatus and Method for Measuring the Residual Volume of Viscous Liquid Inside a Syringe of a Dispenser

Abstract

The present invention relates to an apparatus and method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser, and more specifically, to an apparatus and method for measuring the volume of a viscous solution remaining inside a syringe that stores and supplies a viscous solution to be used in a pump for dispensing a viscous solution. The apparatus and method for measuring the remaining volume of a viscous solution inside a syringe of the present invention has the advantage of being able to accurately measure the volume of a viscous solution inside a syringe with a relatively simple and simple configuration. In addition, the device and method for measuring the remaining volume of a viscous solution inside a syringe of the present invention have the advantage of being able to manufacture a device and implement a method capable of measuring the viscous solution inside a syringe using relatively low-cost parts.

Description

Technology Field

[0001] The present invention relates to an apparatus and method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser, and more specifically, to an apparatus and method for measuring the volume of a viscous solution remaining inside a syringe that stores and supplies a viscous solution to be used in a pump for dispensing a viscous solution. Background Technology

[0002] Dispensers that dispense viscous solutions using pumps are used in various industrial fields, and are widely used in semiconductor processes such as underfill.

[0003] Such a dispenser requires the ability to apply a viscous solution at high speed to an accurate location in an accurate volume. In addition, it is important to determine relatively accurately the volume of the viscous solution remaining in a syringe-shaped container connected to the pump so that the viscous solution can be stored and continuously supplied to the pump.

[0004] When the viscous solution inside the syringe is completely used up, the syringe is replaced. However, if the pump continues to operate without realizing that the viscous solution stored in the syringe has been completely used up and is no longer present, it can lead to process defects. Conversely, if the syringe is replaced even though there is sufficient viscous solution remaining, there is a problem of wasting the solution. Viscous solution that is unused and discarded in this manner increases process costs and can also cause environmental pollution. Furthermore, stopping the dispenser's operation due to unnecessary syringe replacements can lead to a decrease in productivity.

[0005] Conventionally, ultrasonic sensors, laser sensors, or lidar were used to measure the volume of viscous solution remaining in a syringe. However, such devices have the problem of being very expensive. Furthermore, installing a measuring device utilizing such sensors into the syringe is very cumbersome. Additionally, installing such a device into the syringe causes interference with surrounding machinery, making installation and use difficult.

[0006] In addition, when using an ultrasonic sensor, a method of measuring a single point on the surface of the solution is used. However, in the case of high-viscosity solutions, the surface is often not flat, so there is a problem in that it is difficult to accurately measure the remaining amount. Furthermore, there is a problem in that it is difficult to accurately measure the remaining amount of the viscous solution when the viscous solution adheres to the inner wall of the syringe or travels up the inner wall of the syringe.

[0007] Therefore, there is a need for a device and method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser, which can accurately measure the volume of the viscous solution remaining in the syringe at a relatively low cost and is convenient to install and use because the structure of the device is relatively simple. The problem to be solved

[0008] The present invention was devised to solve the aforementioned needs and aims to provide a device and method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser, which can accurately measure the volume of a viscous solution inside a syringe with a relatively simple configuration and at a low cost. means of solving the problem

[0009] To solve the above-mentioned purpose, the method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser according to the present invention is characterized by comprising: (a-1) a step of supplying gas to the syringe using a pressurizing module; (a-2) a step of measuring the pressure of the syringe using a pressure sensor; (a-3) a step of a control unit measuring a pressurization time, which is the time when the pressure of the syringe reaches a reference pressure; and (a-4) a step of a control unit predicting and calculating the volume of the viscous solution remaining in the syringe using the pressurization time.

[0010] In addition, the method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser according to the present invention is characterized in that it comprises: (b-1) a step of supplying gas to the syringe using a pressurizing module; (b-2) a step of measuring the flow rate of the gas supplied to the syringe using a flow meter; (b-3) a step of measuring a charging time, which is the time required for the flow rate of the gas supplied to the syringe to decrease to a reference flow rate, by a control unit; and (b-4) a step of the control unit predicting and calculating the volume of the viscous solution remaining in the syringe using the charging time.

[0011] In addition, the method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser according to the present invention is characterized by comprising: (c-1) a step of supplying gas to the syringe using a pressurizing module; (c-2) a step of measuring the flow rate of the gas supplied to the syringe using a flow meter; (c-3) a step in which a control unit calculates the volume of the supplied gas as a filling volume while the flow rate of the gas supplied to the syringe decreases to a reference flow rate; and (c-4) a step in which a control unit predicts and calculates the volume of the viscous solution remaining in the syringe using the filling volume.

[0012] In addition, the device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser according to the present invention is a device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser for predicting the volume of a viscous solution remaining in a syringe of a pump that dispenses a viscous solution, comprising: a pressurizing module connected to the syringe and supplying gas to the syringe; a pressure sensor for measuring the pressure of the syringe; and a control unit for receiving the measurement value of the pressure sensor and controlling the operation of the pressurizing module; wherein the control unit measures the pressurization time, which is the time when the pressure of the syringe reaches a reference pressure, and predicts and calculates the volume of the viscous solution remaining in the syringe from the pressurization time.

[0013] In addition, the device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser according to the present invention is a device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser for predicting the volume of a viscous solution remaining in a syringe of a pump that dispenses a viscous solution, comprising: a pressurizing module connected to the syringe and supplying gas to the syringe; a flow meter that measures the flow rate of the gas supplied to the syringe by the pressurizing module; and a control unit that receives the measurement value of the flow meter and controls the operation of the pressurizing module; wherein the control unit measures a charging time, which is the time required for the flow rate of the gas supplied to the syringe to decrease to a reference flow rate, and predicts and calculates the volume of the viscous solution remaining in the syringe using the charging time. Effects of the invention

[0014] The apparatus and method for measuring the remaining volume of a viscous solution inside a syringe of the present invention has the advantage of being able to accurately measure the volume of a viscous solution inside a syringe with a relatively simple and simple configuration.

[0015] In addition, the device and method for measuring the remaining volume of a viscous solution inside a syringe of the present invention have the advantage of being able to manufacture a device and implement a method capable of measuring the viscous solution inside a syringe using relatively low-cost parts. Brief explanation of the drawing

[0016] FIG. 1 is a schematic diagram of a device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser according to an embodiment of the present invention. Specific details for implementing the invention

[0017] Hereinafter, with reference to the attached drawings, a device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser according to the present invention will be described in detail.

[0018] FIG. 1 is a schematic diagram of a device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser according to an embodiment of the present invention.

[0019] Referring to FIG. 1, the device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser according to the present embodiment comprises a pressurizing module (200), a pressure sensor (410), a control unit (300), and a flow meter (430).

[0020] The pressurizing module (200) is connected to the syringe (100) to supply gas to the syringe (100). The syringe (100) is connected to and used with a pump (500) that dispenses a viscous solution. A viscous solution is stored in the syringe (100). Such a syringe (100) serves to supply a viscous solution for dispensing to the pump (500) regardless of the type of pump (500). Accordingly, various types of pumps (500) can be used, such as a piezoelectric pump (500), a screw pump (500), or a linear pump (500). A device for measuring the remaining volume of the viscous solution inside the syringe of the dispenser according to the present invention can be applied to and used with such various types of pumps (500).

[0021] The pressurizing module (200) is connected to the syringe (100) through the piping (450). The control unit (300) controls the operation of the pressurizing module (200). The control unit (300) operates the pressurizing module (200) to supply compressed gas to the syringe (100) at a preset pressure.

[0022] The pressure sensor (410) measures the pressure of the syringe (100). The pressure sensor (410) may be installed inside the syringe (100) or in the pipe (450) connecting the pressurizing module (200) and the syringe (100). In some cases, the pressure sensor (410) may be embedded in the pressurizing module (200). Since the gas pressure of the syringe (100) connected by the pipe (450), the pipe (450), and the pressurizing module (200) is substantially the same, it is possible to measure the internal pressure of the syringe (100) or a corresponding pressure regardless of where the pressure sensor (410) is installed in the gas flow path connected in this manner.

[0023] The measurement value of the pressure sensor (410) is transmitted to the control unit (300), and the control unit (300) controls the operation of the pressurization module (200) using the measurement value of the pressure sensor (410).

[0024] The flow meter (430) measures the flow rate of gas supplied to the syringe (100) by the pressurizing module (200). The flow meter (430) is installed in the pipe (450) connecting the pressurizing module (200) and the syringe (100) to measure the flow rate of gas flowing through the pipe (450). The measurement value of the flow meter (430) is transmitted to the control unit (300). The control unit (300) controls the operation of the pressurizing module (200) using the measurement value of the flow meter (430).

[0025] The control unit (300) calculates and predicts the volume of the viscous solution remaining in the syringe (100) using either the measurement value of the pressure sensor (410) or the measurement value of the flow meter (430).

[0026] First, the case in which the control unit (300) predicts the remaining amount of viscous solution of the syringe (100) using the measurement value of the pressure sensor (410) is described.

[0027] The control unit (300) operates the pressurizing module (200) to supply gas to the syringe (100) until the internal pressure of the syringe (100) reaches a preset reference pressure. At this time, the control unit (300) operates the pressurizing module (200) to maintain a constant flow rate of the gas supplied to the syringe (100) by the pressurizing module (200). Simultaneously, the control unit (300) receives real-time feedback on the measurement value of the pressure sensor (410). The control unit (300) measures the time taken for the internal pressure of the syringe (100) to reach the reference pressure from the moment the pressure of the syringe (100) begins to be increased by the pressurizing module (200). The time taken to reach the reference pressure in this manner is referred to as the pressurization time below. As the larger the empty space inside the syringe (100), the longer the pressurization time becomes, the control unit (300) can predict the volume of the empty space inside the syringe (100) that is not filled with viscous solution from the pressurization time. The control unit (300) can calculate the remaining amount of viscous solution from the calculated volume of the empty space inside the syringe (100). That is, the volume of the internal space of the syringe (100) can be known in advance through measurement or calculation, and the volume of the remaining viscous solution can be calculated by subtracting the volume of the empty space from the volume of the internal space.

[0028] The correlation between the remaining amount of such viscous solution and the pressurization time can be determined in the form of a table or graph through testing. The control unit (300) can predict the remaining amount of the viscous solution by applying the pressurization time to the table or graph. In some cases, the volume of the empty space inside the syringe (100) can be calculated using the reference pressure, pressurization time, set flow rate, and the physical properties of the gas. Generally, since the gas has compressibility as the pressure increases, it is possible to calculate the volume of the gas filling the empty space of the syringe (100) by considering the variable where the volume decreases as the gas is compressed as the pressure increases. From this volume of gas, the control unit (300) can calculate the volume of the viscous solution remaining in the syringe (100).

[0029] Next, a case is described in which the control unit (300) predicts the remaining amount of the viscous solution of the syringe (100) using the measurement value of the flow meter (430).

[0030] The control unit (300) supplies gas to the syringe (100) by means of the pressurizing module (200) and measures the flow rate of the supplied gas using a flow meter (430). The control unit (300) measures the time required for the gas flow rate to decrease to a preset reference flow rate. The time required to decrease to the reference flow rate in this way is referred to as the filling time below. When gas is supplied to the syringe (100) by means of the pressurizing module (200), the pressure of the syringe (100) gradually increases, and the flow rate of the gas supplied into the syringe (100) gradually decreases. The control unit (300) measures the filling time required for the gas flow rate to decrease to a preset reference flow rate in this way, and can predict the volume of the empty space inside the syringe (100) from the filling time.

[0031] The correlation between the filling time and the volume of the empty space inside the syringe (100) can be determined through experiment or through calculation. The control unit (300) can calculate the remaining amount of the viscous solution using the correlation between the filling time and the volume of the empty space.

[0032] It is also possible for the control unit (300) to directly calculate the volume of gas supplied to the syringe (100) from the measurement value of the flow meter, rather than indirectly determining the empty space inside the syringe (100) based on the filling time. The control unit (300) may also calculate the volume of gas supplied while the flow rate of the gas supplied to the syringe (100) decreases to a reference flow rate as the filling volume. By integrating the change in flow rate over time, the volume of gas supplied to the syringe (100) through the piping (450) can be calculated. In some cases, it is also possible to calculate the filling volume by reflecting the measurement value of the pressure sensor (410) together with the amount of gas compression. By calculating the filling volume of the gas filled in the syringe (100) in this way, the volume of the viscous solution remaining in the syringe (100) can also be calculated.

[0033] Hereinafter, the process of carrying out the method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser according to the present invention using a device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser configured as described above will be explained.

[0034] Before the method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser according to the present invention is performed, the syringe (100) is filled with a viscous solution, and the pump (500) performs the operation of dispensing the viscous solution. At this time, in order to continuously and stably supply the viscous solution of the syringe (100) to the pump (500), gas pressure is transmitted to the syringe (100) at a preset pressure. The control unit (300) maintains the pressure of the syringe (100) by the pressurizing module (200) at a constant level in this way, thereby ensuring that the viscous solution is smoothly transmitted to the pump (500).

[0035] In this way, after dispensing by the pump (500) for an appropriate period, the syringe (100) is replaced. At this time, it is preferable to use most of the viscous solution stored in the syringe (100) without leaving any behind. To this end, the amount of viscous solution remaining inside the syringe (100) can be predicted by using the method for measuring the remaining amount of viscous solution inside the syringe of the dispenser according to the present invention, and an appropriate time to replace the syringe (100) can be determined.

[0036] First, a method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser that predicts the remaining amount of a viscous solution using a pressure sensor (410) is described.

[0037] In order to predict the volume of the viscous solution remaining in the syringe (100), the control unit (300) operates the pressurizing module (200) to supply gas to the syringe (100) (step (a-1)). At this time, the control unit (300) causes the pressurizing module (200) to supply gas to the syringe (100) at a constant flow rate.

[0038] At the same time, the control unit (300) measures the pressure of the syringe (100) by the pressure sensor (410) (step (a-2)). As gas is continuously supplied to the syringe (100) in this way, the pressure of the syringe (100) increases.

[0039] The control unit (300) measures the pressurization time during which the pressure of the syringe (100) reaches a reference pressure (step (a-3)). As described above, the pressure of the syringe (100) gradually increases until it reaches a preset reference pressure.

[0040] The control unit (300) calculates the volume of viscous solution remaining in the syringe (100) by using the pressurization time (step (a-4)). As described above, the control unit (300) may directly calculate the volume of gas supplied to the syringe (100), or it may determine the volume of gas supplied to the syringe (100) using a pre-prepared graph or table. As described above, the correlation between the volume of gas that can be filled in the empty space of the syringe (100), the reference pressure, and the pressurization time can be established in advance through experiments or calculations, and the control unit (300) can calculate the remaining amount of viscous solution through the correlation established in this way.

[0041] First, a method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser, which predicts the remaining amount of a viscous solution using a flow meter (430), will be explained.

[0042] In order to predict the volume of the viscous solution remaining in the syringe (100), the control unit (300) operates the pressurizing module (200) to supply gas to the syringe (100) (step (b-1)).

[0043] At the same time, the control unit (300) measures the flow rate of the gas supplied to the syringe (100) by the flow meter (430) (step (b-2)). As gas is continuously supplied to the syringe (100) in this way, the pressure of the syringe (100) increases and the flow rate gradually decreases.

[0044] The control unit (300) measures the filling time until the pressure of the syringe (100) reaches a reference flow rate (step (b-3)). As described above, the pressure of the syringe (100) gradually increases and the flow rate of the gas supplied to the syringe (100) gradually decreases until it reaches a preset reference flow rate.

[0045] The control unit (300) calculates the volume of the viscous solution remaining in the syringe (100) by using the filling time (step (b-4)). As described above, the control unit (300) may directly calculate the volume of gas supplied to the syringe (100), or it may determine the volume of gas supplied to the syringe (100) using a pre-prepared graph or table. As described above, the correlation between the volume of gas that can be filled into the empty space of the syringe (100), the reference flow rate, and the filling time can be established in advance through experiments or calculations, and the control unit (300) can calculate the remaining amount of the viscous solution through the correlation established in this way.

[0046] The method for measuring the remaining volume of the viscous solution inside the syringe of the dispenser of the present invention may also be implemented by directly calculating the filling volume using the measurement value of the flow meter (430) over time.

[0047] As described above, gas is supplied to the syringe (100) using a pressurizing module (200) (step (c-1)), and the flow rate of the gas supplied to the syringe (100) is measured using a flow meter (430) (step (c-2).

[0048] The control unit (300) calculates the volume of the gas supplied to the syringe (100) as the filling volume while the flow rate of the gas supplied to the syringe (100) decreases to a reference flow rate (step (c-3)). Since the measurement value of the flow meter (430) is the volume of the gas supplied per unit time, it is possible for the control unit (300) to calculate the filling volume by integrating the measurement value of the flow meter (430) over time. In some cases, the control unit (300) may also calculate the filling volume by reflecting the measurement value of the pressure sensor (410) together, taking into account the amount of volume reduction due to the compressibility of the gas.

[0049] The control unit (300) can calculate the volume of viscous solution remaining in the syringe (100) using the filling volume calculated in this way ((step c-4).

[0050] After calculating the remaining amount of the viscous solution in this manner, if it is determined that there is still viscous solution remaining, the process of applying the viscous solution using the pump (500) is performed after releasing the gas so that the pressure inside the syringe (100) decreases to a state suitable for operation. If the remaining amount of the viscous solution is below the standard, the syringe (100) is replaced and installed, and the pump (500) is used.

[0051] By using the device and method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser according to the present invention as described above, the remaining volume of the viscous solution inside the syringe (100) can be accurately calculated in a relatively simple manner. Through such a device and method, the syringe (100) can be replaced and used after most of the viscous solution filled in the syringe (100) has been used. Consequently, according to the present invention, the amount of viscous solution that is wasted or discarded can be reduced. This can achieve the effect of improving the productivity of the viscous solution dispensing process and reducing process costs. In addition, there is an advantage of improving process productivity by minimizing the time the dispenser operation is stopped to replace the syringe (100). Although discarding a viscous solution without using it can cause environmental pollution, according to the present invention, the amount of viscous solution discarded can be minimized, thus providing the advantage of minimizing environmental pollution.

[0052] In addition, according to the present invention, there is an advantage in that the volume of the viscous solution that is adhered to or forms a film on the inner wall surface of the syringe (100) due to the viscosity or surface tension of the viscous solution can also be accurately calculated.

[0053] Although preferred examples of the present invention have been described above, the scope of the present invention is not limited to the forms described and illustrated above.

[0054] For example, although the device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser with a structure equipped with both a pressure sensor (410) and a flow meter (430) was described above as an example, it is also possible to implement a device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser with a structure equipped with only one of the pressure sensor (410) and the flow meter (430). In this case, by using the device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser, a method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser using only one of the pressure sensor (410) and the flow meter (430) is implemented.

[0055] In addition, when implementing the method for measuring the remaining volume of the viscous solution inside the syringe of the dispenser using the method of measuring the pressurization time as described above, it was explained that gas is supplied to the syringe (100) while maintaining a constant flow rate of gas; however, it is also possible to implement the method for measuring the remaining volume of the viscous solution inside the syringe of the dispenser using a method that does not maintain a constant flow rate of gas. Even when operating the pressurization module (200) in a conventional manner and measuring the pressurization time to reach a reference pressure, it is possible to estimate the remaining amount of the viscous solution according to the pressurization time. Explanation of the symbols

[0056] 100: Syringe 410: Pressure sensor 430: Flow meter 450: Piping 200: Pressurization module 300: Control unit 500: Pump

Claims

Claim 1 A method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser for predicting the volume of a viscous solution remaining in a syringe of a pump dispensing a viscous solution, comprising: (a-1) a step of supplying gas to the syringe using a pressurization module; (a-2) a step of measuring the pressure of the syringe using a pressure sensor; (a-3) a step of a control unit measuring a pressurization time, which is the time when the pressure of the syringe reaches a reference pressure; and (a-4) a step of a control unit predicting and calculating the volume of the viscous solution remaining in the syringe using the pressurization time. Claim 2 In claim 1, the above step (a-1) is a method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser in which the pressurizing module supplies gas to the syringe while maintaining a constant gas flow rate. Claim 3 A method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser, wherein, in claim 1 or 2, step (a-4) is a control unit that calculates the volume of a viscous solution remaining in the syringe using the correlation between the pressurization time and the volume of the viscous solution remaining in the syringe. Claim 4 A method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser for predicting the volume of a viscous solution remaining in a syringe of a pump dispensing a viscous solution, comprising: (b-1) a step of supplying gas to the syringe using a pressurizing module; (b-2) a step of measuring the flow rate of the gas supplied to the syringe using a flow meter; (b-3) a step of a control unit measuring a charging time, which is the time required for the flow rate of the gas supplied to the syringe to decrease to a reference flow rate; and (b-4) a step of a control unit predicting and calculating the volume of the viscous solution remaining in the syringe using the charging time. Claim 5 In claim 4, the above step (b-4) is a method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser, wherein the control unit calculates the volume of the viscous solution remaining in the syringe using the correlation between the charging time and the volume of the viscous solution remaining in the syringe. Claim 6 A method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser for predicting the volume of a viscous solution remaining in a syringe of a pump dispensing a viscous solution, comprising: (c-1) a step of supplying gas to the syringe using a pressurizing module; (c-2) a step of measuring the flow rate of the gas supplied to the syringe using a flow meter; (c-3) a step in which a control unit calculates the volume of the supplied gas as a filling volume while the flow rate of the gas supplied to the syringe decreases to a reference flow rate; and (c-4) a step in which a control unit predicts and calculates the volume of the viscous solution remaining in the syringe using the filling volume. Claim 7 In claim 6, the above step (c-4) is a method for measuring the remaining volume of a viscous solution inside a syringe of a dispenser, wherein the control unit calculates the volume of the viscous solution remaining in the syringe using the correlation between the filling volume and the volume of the viscous solution remaining in the syringe. Claim 8 A device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser for predicting the volume of a viscous solution remaining in a syringe of a pump dispensing a viscous solution, comprising: a pressurizing module connected to the syringe and supplying gas to the syringe; a pressure sensor for measuring the pressure of the syringe; and a control unit for receiving the measurement value of the pressure sensor and controlling the operation of the pressurizing module; wherein the control unit measures a pressurization time, which is the time when the pressure of the syringe reaches a reference pressure, and predicts and calculates the volume of the viscous solution remaining in the syringe from the pressurization time. Claim 9 In claim 8, the control unit is a device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser that maintains a constant flow rate of gas supplied to the syringe by the pressurizing module. Claim 10 A device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser, wherein the control unit in claim 8 or 9 calculates the volume of the viscous solution remaining in the syringe using the correlation between the pressurization time and the volume of the viscous solution remaining in the syringe. Claim 11 A device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser for predicting the volume of a viscous solution remaining in a syringe of a pump dispensing a viscous solution, comprising: a pressurizing module connected to the syringe and supplying gas to the syringe; a flow meter for measuring the flow rate of the gas supplied to the syringe by the pressurizing module; and a control unit for receiving the measurement value of the flow meter and controlling the operation of the pressurizing module; wherein the control unit measures a charging time, which is the time required for the flow rate of the gas supplied to the syringe to decrease to a reference flow rate, and predicts and calculates the volume of the viscous solution remaining in the syringe using the charging time. Claim 12 In claim 11, the control unit is a device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser, which calculates the volume of a viscous solution remaining in the syringe using the correlation between the charging time and the volume of the viscous solution remaining in the syringe. Claim 13 A device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser for predicting the volume of a viscous solution remaining in a syringe of a pump dispensing a viscous solution, comprising: a pressurizing module connected to the syringe and supplying gas to the syringe; a flow meter for measuring the flow rate of the gas supplied to the syringe by the pressurizing module; and a control unit for receiving the measurement value of the flow meter and controlling the operation of the pressurizing module; wherein the control unit calculates the volume of the gas supplied while the flow rate of the gas supplied to the syringe decreases to a reference flow rate as a filling volume, and predicts and calculates the volume of the viscous solution remaining in the syringe using the filling volume. Claim 14 In claim 13, the control unit is a device for measuring the remaining volume of a viscous solution inside a syringe of a dispenser, which calculates the volume of a viscous solution remaining in the syringe using the correlation between the filling volume and the volume of the viscous solution remaining in the syringe.

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