KR100606433B1 - System for control the removal of static electricity and method therof - Google Patents

Abstract

The present invention is a high voltage generator 1, a discharge needle (2) for generating positive and negative ions by receiving a high voltage from the high voltage generator (1), the electrostatic sensing to detect the presence and level of static electricity installed near the charged object The presence or absence of the static electricity and the level is determined by the signal from the sensor 10, the voltage adjusting unit 20 for adjusting the power applied to the high voltage generating unit 1, and the static electricity detection sensor 10 and the level of the static electricity And a control unit 30 including a microprocessor for controlling the voltage adjusting unit 20. The voltage adjusting unit is installed near the charging object at the time of outputting the OV so that the static electricity of the charging object is prevented by an electrostatic sensor. Detecting the level and storing the value in the microprocessor, the static electricity level detection step (S1) at 0V output, the static voltage level detection 1 second after the 0V output control the voltage adjusting unit to control the maximum voltage (1 2V) outputting the static electricity removing step (S2) to remove the static electricity, the static electricity detection step 1 second after the static electricity removal step of detecting the static electricity level of the charged object by the electrostatic sensor to store the current value in the microprocessor (S3), determining whether the present value of the static electricity level is equal to or greater than | ± 1000V | (S4), and if the present value is greater than or equal to | ± 1000V | Comparing step (S5), the step of maintaining the output value from the voltage adjuster as it is when the present value of the static electricity level is less than the past value (S6), when the present value of the static electricity level is equal to or greater than the past value Making the output value from the voltage adjusting section the maximum output (S7), determining whether the current value of the static electricity level of the charged object is less than | ± 1000V | and less than or equal to | ± 500V | (S8), If the present value of the electric level is less than | ± 1000 V | and is equal to or greater than | ± 500 V |, it is determined whether the present value is smaller than the past value (S9). Controlling the output value of the adjusting unit to a voltage of a lower step (S10), and if the present value is not smaller than the past value in the step, determining whether the present value and the past value are the same (S11), and in the step, the static electricity level If the present value is equal to the past value, the present output is maintained as it is (S12). In step S11, the present value is compared with the past value, and if the present value is greater than the past value, the output value from the voltage adjusting unit. Is controlled to a higher level voltage (S13), and if the current value is less than | ± 500V | in step S8, maintaining the output value of the voltage adjusting part as it is (S14). It controls the eliminator.

The present invention provides a static elimination control system and a control method thereof in order to remove the static electricity generated in the charged object and to detect the residual static electricity of the charged object in the static electricity sensing sensor to generate positive or negative ions of strength corresponding to the level of the remaining static electricity. By repeatedly performing ion-combination with the static electricity of N, the residual static electricity is gradually reduced to minimize the residual static electricity.

Static electricity, static electricity detection sensor, microprocessor, voltage regulator, high voltage generator

Description

Static elimination control system and control method {SYSTEM FOR CONTROL THE REMOVAL OF STATIC ELECTRICITY AND METHOD THEROF}

1 is a partial cutaway side view of a general static ion removing blower,

FIG. 2 is an installation state of a discharge needle that is a component of the ion blower of FIG. 1;

3 is a schematic block diagram of an operation circuit of a conventional static blower ion blower,

4 is a block diagram of the static elimination control system of the present invention;

5A and 5B are flowcharts illustrating the static elimination control method of the present invention.

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

1: high voltage generator 2: discharge needle

3: blower 3a: bang

4: needle installation unit

10: static electricity detection sensor 20: voltage adjusting unit

30: control unit 40: display

The present invention relates to a control system for removing static electricity generated in electronic products and the like, and more particularly, to minimize static electricity remaining after static electricity removal in removing static electricity generated in high-precision electronic products such as semiconductors and LCDs. An electrostatic elimination control system and a control method thereof.

Generally, in the production process of various electronic components such as semiconductors and LCDs, static electricity is generated in electronic products. If it is caused by static electricity, it may cause electronic parts failure or performance instability and affect human body. Therefore, static electricity should be removed as completely as possible. .

In order to remove the static electricity of the electronic products as described above, in the prior art, the discharge needle is placed near the charged object and the high pressure is applied to the discharge needle to blow the ions that simultaneously generate the positive and negative ions at the rear to charge the positive and negative ions. Ion blowers are used to remove static electricity by contacting objects.

1 is a partially cutaway side view of a general static elimination ion blower, FIG. 2 is a state diagram of a discharge needle that is a component of the ion blower of FIG. 1, and FIG. 3 is a schematic block diagram of an operation circuit of a conventional static elimination ion blower. It is also.

The conventional ion blower operation circuit applies a high voltage from the high voltage generator 1 and a high voltage generator 1 for boosting the low DC voltage 12V and outputting the respective high DC voltages 6KV and 6KV. It consists of a discharge needle 2 which generates a corona discharge and generates positive and negative ions. The discharge needle 2 applied with the DC voltage 6KV generates positive ions, and the discharge needle 2 applied with the DC voltage -6KV generates negative ions.

The discharge needle (2) is installed in the annular needle installation portion (4) at regular intervals, the positive and negative ions generated in the discharge needle (2) to the operation of the fan (3a) of the blower (3) installed behind the By moving to the front of the charging object by reacting with the static electricity generated in the charging object to remove the static electricity. According to the characteristics of the static electricity in the charged object, the anion reacts when the positive electric charge is charged, and the cation reacts when the negative electric charge is charged.

However, positive and negative ions are applied simultaneously to the static electricity generated in the charged object to perform ionic bonds. During the bonding, the static electricity and ions are not completely bonded and remain around the charged object and are newly charged by the charged object. Therefore, the operation circuit of the conventional ion blower has a problem that it is not possible to completely remove the residual static electricity formed by newly charged to the charging object.

The present invention has been made to solve the above-mentioned problems of the prior art, and by detecting the residual static electricity in removing the static electricity generated in the charging object to generate a positive or negative ion of the intensity corresponding to the level of the residual static electricity of the charged object It is an object of the present invention to provide an electrostatic elimination control system that minimizes residual static electricity by repeatedly performing ion coupling with and.

Another object of the present invention is to remove residual static electricity by sensing the remaining static electricity in the removal of static electricity generated in the charging object to generate positive or negative ions of strength corresponding to the level of the residual static electricity to ionically bond with the static electricity of the charging object. The present invention provides a control method of eliminating static electricity to minimize electricity.

Electrostatic elimination control system of the present invention for achieving the above object is a high voltage generator for boosting a low DC voltage to output a high DC voltage, and a high voltage is applied from the high voltage generator to generate a corona discharge to generate positive and negative ions In the static eliminating device comprising a discharge needle for generating a, an electrostatic sensing sensor installed near the charging object to detect the presence and level of static electricity, a voltage adjusting unit for adjusting the power applied to the high voltage generator, and the static electricity detection It includes a control unit including a microprocessor for determining the presence and absence of the static electricity by the signal from the sensor and for controlling the voltage adjusting unit in accordance with the level of the static electricity.

Electrostatic elimination control method of the present invention for achieving the above another object is installed in the vicinity of the charging object when the OV output from the voltage adjusting unit detects the static electricity level of the charging object by the electrostatic detection sensor for detecting the level of static electricity, the value Electrostatic level detection step (S1) when the 0V output stored in the microprocessor (S1), the static electricity removal step (S2) to remove the static electricity by outputting the maximum voltage (12V) by controlling the voltage adjusting unit 1 second after the static electricity level detection at 0V output, After 1 second of static electricity removal in the static electricity removing step, the static electricity sensor detects the static electricity level of the charged object and stores the current value in the microprocessor (S3). The current value of the static electricity level is equal to | ± 1000V | Step S4 of determining whether or not the present value is | ± 1000V | Step S5, maintaining the output value from the voltage adjuster when the present value of the static electricity level is smaller than the past value in the step (S6), and voltage if the present value of the static electricity level is equal to or greater than the past value. Making the output value from the adjusting unit the maximum output (S7), determining whether the current value of the static electricity level of the charged object is less than | ± 1000V | and greater than or equal to | ± 500V | (S8), and the current of the static electricity level If the value is less than | ± 1000V | and is equal to or greater than | ± 500V |, it is determined whether the present value is smaller than the past value (S9). Controlling the voltage to a lower step (S10), if the present value is not less than the past value in the step, determining whether the present value and the past value are the same (S11), and in the step, present If the same as the past value, the present output is maintained as it is (S12). In the step S11, the present value is compared with the past value. Controlling to a voltage of (S13), and maintaining the output value of the voltage adjusting unit as it is (S14) when the present value is less than | ± 500V | in the step (S8).

Hereinafter, the configuration and operation of embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a block of the static elimination control system of the present invention, Figures 5a and 5b is a flow chart showing a static elimination control method of the present invention.

As shown in FIG. 4, the electrostatic elimination control system of the present invention boosts a low DC voltage and outputs a high DC voltage to each of the high voltage generators 1 and the corona receiving high voltages from the high voltage generators 1. The discharge needle 2 which generate | occur | produces a discharge and generate | occur | produces a cation and an anion is included. Electrostatic elimination control system of the present invention is installed in the vicinity of the charging object, the static electricity sensor 10 for detecting the presence and level of static electricity, the voltage adjusting unit 20 for adjusting the power applied to the high voltage generator 1, and The controller 30 includes a microprocessor for determining the presence or absence of the static electricity by the signal from the static electricity detection sensor 10 and controlling the voltage adjusting unit 20 according to the level of the static electricity. And the display 40 which displays the level of the static electricity of the charged object by control of the said control part 30 is comprised.

The static electricity detection sensor 10 not only detects the presence of static electricity but also functions to determine the level of static electricity intensity. The voltage adjusting unit 20 functions to adjust the power supplied to the high voltage generator 1 from 0V to 12V under the control of the controller 30. The control unit 30 includes a microprocessor and controls the voltage adjusting unit 20 according to a signal from the static electricity detection sensor 10 to control the voltage applied to the high voltage generating unit 1 and to control the display 40. This function displays the static electricity level of the charged object.

An electrostatic elimination control method for a charged object using the electrostatic elimination control system as described above will be described in detail with reference to FIGS. 5A and 5B.

First, in the OV output state in which no voltage is output from the voltage adjusting unit 20, the static electricity level of the charged object is sensed by the electrostatic sensing sensor 10 installed near the charged object, and the value thereof is determined by the microcontroller 30. Stored in the processor (S1). 1 second after detecting the static electricity level at the 0V output of the step (S1) by controlling the voltage adjusting unit 20 to output a maximum voltage (12V) to generate positive and negative ions in the discharge needle (2) to remove the static electricity (S2 ). After 1 second after outputting the maximum voltage (12V) to remove the static electricity, the static electricity sensor 10 detects the static electricity level of the charged object and stores the current value in the microprocessor of the controller 30 (S3). ).

Then, it is determined whether the current value of the static electricity level sensed in the step S3 is equal to or greater than | ± 1000V | (S4). Here, | ± 1000V | is an indication of the absolute value of ± 1000V, where + 1000V is the value of static electricity when controlling positive static electricity, and -1000V is the value of static electricity when controlling negative static electricity. In the case of controlling positive static electricity, it is determined whether the present value is more than + 1000V. In case of controlling positive static electricity, it is determined whether the present value is -1000V or less.

When the present value of the static electricity level of the charged object in the step (S4) is + 1000V or more in the case of controlling (+) static electricity or -1000V or less in the case of controlling the (-) static electricity, the present value and the past value of the static electricity level are compared. (S5), if the present value of the static electricity level is smaller than the past value in the step, it is controlled to maintain the output value from the voltage adjusting unit 20 (S6). This is because the output value of the voltage adjusting unit 20 reduces the static electricity level of the charged object, so that the state is maintained as it is.

When the present value of the static electricity level is equal to or greater than the past value in step S5, the output value from the voltage adjusting unit 20 is controlled to the maximum output (± 12V) (S7). Outputs + 12V when controlling positive static electricity and -12V when controlling positive static electricity. This is to reduce the static electricity level by outputting the maximum voltage because the static electricity level of the charging object is rising.

Next, in the step S4, when the current value of the static electricity level is less than or equal to | 1000 V, it is determined whether the current value of the static electricity level of the charged object is less than or equal to or less than or equal to or less than or equal to ± 500 V or not (S8). . If the present value of the static electricity level is less than | ± 1000V | and equal to or greater than | ± 500V |, in step S8, it is determined whether the present value is smaller than the past value (S9). When the present value is smaller than the past value in the step S9, the output value from the voltage adjusting unit is controlled to the voltage of the lower step (S10). In the case of controlling positive static electricity, the output voltage of the voltage adjusting unit 20 is reduced by + 1V. For example, if the voltage adjusting unit 20 is outputting + 10V, the output is reduced to + 9V. In case of controlling the negative static electricity, it increases by + 1V. For example, if the voltage adjusting unit 20 outputs -10V, the voltage adjusting unit 20 rises to -9V and outputs it. This is to reduce the output voltage gradually because the static electricity level of the current charging object is decreasing.

When the present value is not smaller than the past value in step S9, it is determined whether the present value and the past value are the same (S11). If the present value of the static electricity level is the same as the past value in the step S11, the current output is maintained as it is (S12). In this state, since the static electricity level of the charged object is not changed, the output value is maintained as it is, thereby reducing the static electricity level.

When the present value is greater than the past value by comparing the present value with the past value in the step S11, the output value from the voltage adjusting unit is controlled to the voltage of the upper level (S13). In this step, when controlling the positive static electricity, the output voltage of the voltage adjusting unit 20 is increased by + 1V. For example, if + 10V is output from the voltage adjusting unit 20, the voltage is increased to + 11V and output. In the case of controlling the negative static electricity, the output voltage of the voltage adjusting unit 20 is reduced by -1V. For example, if the voltage adjusting unit 20 outputs -10V, the voltage adjusting unit 20 decreases the output voltage to -11V and outputs it. This is to reduce the static electricity level by outputting a large voltage because the static electricity level of the charging object is rising.

Finally, in the step S8, when the current value is less than | ± 500V |, the output value of the voltage adjusting unit 20 is kept as it is (S14). In case of controlling (+) static elimination, the present value is less than + 500V. In case of controlling (+) electrostatic elimination, the present value is greater than -500V. In this case, since the level of the residual static electricity is reduced to less than the expected value, the output value of the voltage adjusting unit 20 is maintained as it is.

From step S3 to step 14, the process of step 14 is repeatedly performed to gradually minimize residual static electricity.

As described above, the method for controlling static electricity elimination of the present invention detects the static electricity level of the current charged object and generates anion or cation of strength corresponding to the static electricity level to ionize the static electricity of the charged object to minimize residual static electricity to 500 V or less. have.

In the above description, the reference values of 1000 V and 500 V are merely examples, and the reference values may vary depending on the charging object.

The present invention is particularly suitable for removing static electricity of high precision electronic products such as semiconductors and LCDs.

 As described above, the present invention provides a static elimination control system and a control method thereof according to the present invention. By generating negative ions and repeatedly performing ion coupling with the static electricity of the charged object, the residual static electricity is gradually reduced to minimize the residual static electricity.

Although the invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that modifications and variations can be made within the spirit and scope of the invention, and such modifications and variations will fall within the scope of the appended claims.

Claims (2)

delete In the method of removing the static electricity of the charged object, Electrostatic level detection step (S1) at 0V output, which detects the static electricity level of the charged object and stores the value in the microprocessor by an electrostatic sensor that is installed near the charging object to detect the level of static electricity when the voltage adjuster outputs OV. , The static electricity removing step (S2) to remove the static electricity by outputting the maximum voltage (12V) by controlling the voltage adjusting unit after 1 second of the static electricity level detection at 0V output, Detecting the static electricity level of the charged object by the static electricity sensor after 1 second of static electricity removal in the static electricity removing step and storing the current value in the microprocessor (S3), Determining whether the current value of the static electricity level is equal to or greater than | ± 1000V | (S4), Comparing the present value and the past value of the electrostatic level when the present value is | ± 1000V | Maintaining the output value from the voltage adjusting unit when the present value of the static electricity level is smaller than the past value in the step (S6), If the present value of the static electricity level is equal to or greater than the past value, setting the output value from the voltage adjusting unit as the maximum output (S7), Judging whether the current value of the static electricity level of the charged object is less than | ± 1000V | and equal to or greater than | ± 500V | (S8), If the present value of the static electricity level is less than | ± 1000V | and equal to or greater than | ± 500V |, determining whether the present value is smaller than the past value (S9), If the present value is smaller than the past value in the step, controlling the output value from the voltage adjusting unit to the voltage of the lower step (S10), In the step S11, if the present value is not less than the past value, determining whether the present value and the past value are the same (S11), If the present value of the static electricity level in the step is the same as the past value step of maintaining the current output as it is (S12), Comparing the present value with the past value in step S11, and controlling the output value of the voltage adjusting unit to a higher level voltage when the present value is greater than the past value, and And maintaining (S14) the output value of the voltage adjusting unit when the present value is less than &quot; ± 500 V | in the step (S8).

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